JP6118780B2 - Manufacturing method of joining member and manufacturing apparatus of joining member - Google Patents

Description

  The present invention relates to a manufacturing method and a manufacturing apparatus for manufacturing a bonded member by bonding a curved surface of a bonded member having at least one curved surface and the other bonded member with an adhesive.

  For example, two optical disk substrates as members to be bonded are bonded together, or a liquid crystal panel and a glass protective plate are bonded as two bonded members to be bonded to each other through an adhesive. There is a joining member. Both members to be joined used for manufacturing such a joining member have flat surfaces, and these flat surfaces are joined together with an adhesive (see Patent Document 1). In this way, when joining flat plate-like members having both surfaces flat, before joining the flat plate-like members to be bonded with an adhesive, two members to be photographed with a CCD camera are used. Alignment is performed so that the positions of the two joint surfaces coincide with each other based on the images.

  When joining the members to be joined whose both joining surfaces are flat surfaces, the holding base for sucking and holding each member to be joined may be flat, and the holding member is perpendicular to the plane from the XY plane. In other words, the joint surface does not deviate in the Z-axis direction, that is, the joint surface does not deviate perpendicularly to the XY plane. Therefore, since the members to be joined can be aligned on the XY plane, it is possible to relatively easily align the positions of the two joining surfaces.

  Further, when the liquid adhesive is discharged from the discharge needle onto the bonding surface of the bonded member so that the adhesive located between the bonded member and the bonded member does not mix voids (bubbles), and the bonding When the agent is spread, an electric field is formed by applying a voltage between the member to be bonded and the member to be bonded (see Patent Document 2). This Patent Document 2 describes that even a plate-like object having a curved surface, such as a lens, can be bonded while applying a voltage. There is no specific mention of coating and spreading.

Japanese Patent Laid-Open No. 2014-145057 JP 2002-251804 A

  Therefore, in the conventional technology, when joining a member to be joined having at least one curved surface, it is difficult to align the two members to be joined and to apply and spread an adhesive, and to manufacture a high-quality joining member. It is difficult to do. In addition, the ratio of bubbles mixed in the adhesive is increased, which is another cause of difficulty in producing a high-quality joining member.

  In view of the above-mentioned problems, the present invention can accurately align both of the members to be bonded even if one or both of the members to be bonded have a curved bonding surface, and obtain a high-quality bonding member. The manufacturing method of the joining member which can be manufactured, and the manufacturing apparatus of a joining member are provided.

  In order to solve the above-described problem, the invention according to claim 1 is such that at least one joining surface of two joining members to be joined is a curved surface, and the joining surface between the curved surface and the other joined member. In the method of joining a member to be joined, a reference placement member arbitrarily selected from the members to be joined having a curved joining surface is placed on a holding base in advance before joining. Data for indicating the position of the member to be joined, and the step of placing reference member data indicating the position of the reference member to be joined, and placing the member to be joined having a curved surface on the holding table; Measuring and storing as measurement position data, calculating the reference position data and the measurement position data, and moving the holding table in a curvature direction so that the measurement position data is within an allowable range of the reference position data. Biased to the above A step of correcting a deviation in a curvature direction of the joining member, a step of supplying an adhesive to at least one of the two members to be joined, and a step of joining the two members to be joined by the adhesive. .

  The invention according to claim 2 is the invention according to claim 1, wherein the reference position data is a distance between a measurement reference position at a certain distance from the reference welded member and a measurement point of the reference welded member. The measurement position data is a distance between the plurality of measurement reference positions and the measurement points of the member to be joined corresponding to the measurement reference positions.

  The invention according to claim 3 is the reference position of the member to be joined having the curved joining surface when joining the joining surfaces of the two members to be joined in the invention according to claim 1 or claim 2. By calculating the difference between the data and the measurement position data, the holding table holding one of the members to be bonded is biased so that the difference is within an allowable range, and the curvature of the member to be bonded is determined. Correct the direction bias.

  The invention according to claim 4 is the invention according to claim 1 or 2, wherein the joining surfaces of the two members to be joined are curved surfaces, and one or both of the curved surfaces are joined. The holding table holding one or both of the members to be joined so that the difference between the reference position data of the members to be joined and the measured position data is calculated and the difference is within an allowable range. And the deviation in the curvature direction of one or both of the members to be joined is corrected.

  The invention according to a fifth aspect is the invention according to any one of the first to fourth aspects, wherein the reference member to be joined held at an appropriate placement position obtained in advance in the holding table before joining. Discharge the adhesive on the surface, obtain the distance from the adhesive discharge port from which the bonding result within the allowable range is obtained to the bonding surface of the reference bonded member, and register the measurement distance as the reference discharge distance, A distance from the adhesive discharge port to the bonding surface of the member to be bonded is obtained, the position of the adhesive discharge port is controlled so that the distance falls within an allowable range of the reference discharge distance, and the adhesive discharge The adhesive is discharged from the outlet onto the joint surface of the member to be joined.

  The invention according to claim 6 is the invention according to claim 5, wherein the reference member to be joined is placed at an appropriate position determined in advance on a holding table, and is located away from the joining surface of the reference member to be joined. The adhesive is discharged from the adhesive discharge port onto the joining surface of the reference member to be bonded, and an appropriate discharge distance from the adhesive discharge start position to the adhesive discharge end position is obtained, and the discharge distance is used as the reference discharge. Registered as a distance, the distance from the adhesive discharge port to the member to be joined placed on the holding table is obtained, and the position of the adhesive discharge port so that the distance is within the allowable range of the reference discharge distance And the adhesive is discharged from the adhesive outlet to the joining surface of the member to be joined.

  In the invention according to claim 7, at least one joining surface of two joining members to be joined is a curved surface, and joining of the joined members joining the curved surface and the joining surface of the other joining member is performed. In the method, before joining, a reference member to be joined arbitrarily selected from the joined members having the curved joining surface is placed at an appropriate position obtained in advance on a holding table, and the reference workpiece is placed. The adhesive is discharged from the adhesive discharge port located away from the bonding surface of the bonding member to the bonding surface of the reference member to be bonded, from the adhesive discharge port to the adhesive discharge start position and the adhesive discharge end position. An appropriate discharge distance is obtained, the discharge distance is registered as a reference discharge distance, a distance from the adhesive discharge port to a member to be joined placed on the holding table is obtained, and the distance is the reference discharge distance. The adhesive discharge so that it is within the allowable range of It controls the position of the mouth, and the ejection of the adhesive from the adhesive discharge opening in the junction surface of the members to be joined.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein one of the members to be joined is formed when an electric field is formed between the two members to be joined. When the joint surface is a concave curved surface, the strength of the electric field formed at the concave bottom portion of the concave joint surface is higher than the electric field around the concave bottom portion.

  In the invention according to claim 9, at least one joining surface of two joining members to be joined is a curved surface, and joining of the joined member joining the curved surface and the joining surface of the other joined member. In the apparatus, before joining, an inclination adjusting means for holding a reference joined member arbitrarily selected from the joined members having a curved joining surface at an appropriate placement position obtained in advance in a holding table, Position state measuring means for obtaining position data where the mounting state of the reference member to be joined is within an allowable range, and a CPU for registering the position data as reference position data indicating an appropriate position state of the reference member to be joined. The member to be joined having the curved joining surface is placed on the holding table, and the position state measuring means measures the position data of the member to be joined and inputs the position data to the CPU as measured position data. , The CPU The reference position data and the measured position data are calculated and a control signal is output. Upon receipt of the control signal, the tilt adjusting means causes the measured position data to be within an allowable range of the corresponding reference position data. Next, the holding table is displaced in the curvature direction to correct the deviation in the curvature direction of the member to be joined.

  The invention according to claim 10 is the distance measuring means according to claim 9, wherein the position state measuring means measures a distance between the measurement position and a measurement point of the joining surface of the reference joined member. The reference position data corresponds to a reference distance that is a distance between a measurement position and a measurement point of a joining surface of the reference member to be joined, and the measurement position data has the measurement reference position and a curved surface. This corresponds to the measurement distance indicating the distance to the member to be joined.

  The invention according to an eleventh aspect is the invention according to the tenth aspect, wherein the distance measuring means includes a plurality of laser displacement meters, the laser displacement meters are arranged at the measurement reference positions, and the laser displacement meters are respectively The distance between the measurement reference position and the measurement point of the reference bonded member is measured, and these distances are input and registered in the CPU as the reference distance of each measurement point, or a plurality of the lasers The displacement meter measures the distance between each measurement reference position and the measurement point of the member to be joined, and inputs these distances to the CPU as the measurement distance of each measurement point.

  The invention according to a twelfth aspect is the invention according to any one of the ninth to eleventh aspects, wherein the reference bonded member is placed at an appropriate position obtained in advance in a holding table, and the reference bonded member is bonded. An appropriate discharge distance from the measurement reference position to the adhesive discharge start position and the adhesive discharge end position by discharging the adhesive from the adhesive discharge port located away from the surface to the bonding surface of the reference member to be bonded The discharge distance is registered as a reference discharge distance, the distance between the member to be joined placed on the holding table and the measurement reference position is determined, and the measured distance is the reference discharge distance. The position of the adhesive discharge port is controlled so as to be within an allowable range, and the adhesive is discharged from the adhesive discharge port to the bonding surface of the member to be bonded.

  A thirteenth aspect of the present invention is the method according to any one of the ninth to twelfth aspects, wherein an electric field is formed by applying a voltage between the two members to be bonded by an electrode connected to a power source. , When one joining surface of the members to be joined is a concave curved surface and the other joining surface is a concave curved surface or a flat surface, the joining surface is formed at the bottom of the concave curved surface. Is stronger than the electric field around the bottom.

  According to a fourteenth aspect of the present invention, in any of the ninth to thirteenth aspects of the present invention, an electric field is applied by applying a voltage between the two members to be bonded via a dielectric substance by an electrode connected to a power source. When one of the joined surfaces of the members to be joined is a concave curved surface, the dielectric constant of the dielectric material in the vicinity of the concave bottom of the curved surface is another portion. Lower than.

  According to the fifteenth aspect of the present invention, at least one of the two bonded members to be bonded is a curved surface, and the bonded member is bonded to the curved surface and the bonded surface of the other bonded member. In the apparatus, before the joining, the inclination adjusting means for adjusting the reference joined member arbitrarily selected from the joined members having the curved surfaces to be held at an appropriate placement position determined in advance on the holding base. An adhesive discharge mechanism for discharging an adhesive from the adhesive discharge port of the discharge needle located away from the bonding surface of the reference bonded member to the bonding surface of the reference bonded member, and an adhesive discharge start position The to-be-joined mounted on the holding table from the adhesive discharge port, comprising a distance measuring means for obtaining an appropriate discharge distance to the adhesive discharge end position, and a CPU for registering the discharge distance as a reference discharge distance Distance to member Is determined by the distance measuring means, and the position of the adhesive discharge port of the discharge needle is controlled so that the measured distance is within an allowable range of the reference discharge distance, and the bonded discharge port is connected to the bonded discharge port. The adhesive is discharged onto the joint surface of the member.

  According to the present invention, even when at least one shape of the members to be joined to each other is a curved surface and other than a circle, accurate alignment can be performed, and preferable joining can be performed. A quality joining member can be provided.

It is a figure which shows the combination of the to-be-joined member joined by the joining method which concerns on embodiment of this invention. It is a figure for demonstrating four basic joining forms of the joining method which concerns on embodiment of this invention. It is a figure for demonstrating the joining method and joining apparatus of the to-be-joined member which concern on embodiment of this invention. It is a figure which shows the flowchart for demonstrating correction | amendment of the bias | inclination of the to-be-joined member which has a curved joining surface in the joining method which concerns on embodiment of this invention. It is a figure which shows the flowchart for demonstrating the basic discharge control which discharges an adhesive agent to the to-be-joined member in the joining method which concerns on embodiment of this invention. It is a figure which shows an example of the discharge pattern of the adhesive agent in the joining method which concerns on embodiment of this invention. It is a figure for demonstrating inversion of the to-be-joined member in the joining method concerning the embodiment of the present invention. It is a figure for demonstrating the example of the voltage application in the joining method which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or similar members are denoted by the same or similar reference numerals, and redundant description is omitted. Moreover, although embodiment of this invention is described below, the embodiment is shown as an example and is not intending limiting the range of invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and modifications of the members can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  A method for manufacturing a joining member according to an embodiment of the present invention will be described below with reference to FIGS. First, shapes and combinations of members to be joined that are particularly suitable for joining by the manufacturing method of the present invention will be described with reference to FIGS. FIG. 1 shows a cross-sectional view for explaining the curved surface of the first member 1 to be joined, and the holding table is not shown. The first member 1 to be joined in FIG. 1A has a convex curved joining surface 1a, and the second member 2 to be joined has a flat joining surface 2a. The first member 1 to be joined in FIG. 1B has a concave curved joining surface 1a, and the second member 2 to be joined has a flat joining surface 2a. In FIG. 1C, the first member 1 to be joined has a concave curved joint surface 1a, and the second member to be joined 2 has a convex curved joint surface 2a. In FIG. 1D, the first member 1 to be joined has a concave curved joint surface 1a, and the second member to be joined 2 also has a concave curved joint surface 2a. The first member 1 to be joined in FIG. 1E has a convex curved joint surface 1a, and the second member to be joined 2 also has a convex curved joint surface 2a.

  When the first member 1 having a curved joining surface 1a as shown in FIGS. 1A and 1B is aligned with the second member 2 to be joined, which is a flat plate, it is a flat plate. The second member 2 to be joined is not described here because it can be aligned by the prior art. When the left and right direction of the drawing is the X direction, and when the front and back direction of the drawing is the Y direction perpendicular to the X direction, the curved bonding surface 1a of the first bonded member 1 is biased with respect to the XY plane. That is, it is important to obtain a high-quality joining member by joining the first joined member 1 and the second joined member 2 after correcting the deviation to the left or right in the drawing. I understood that.

  Further, as shown in FIGS. 1C, 1D, and 1E, when both of the members to be joined 1 and 2 have a curved joining surface, that is, the first having a curved joining surface 1a. When the first member 1 and the second member 2 having the curved bonding surface 2a are bonded, the curved bonding surface 1a of the first member 1 is biased with respect to the XY plane. The first member to be bonded 1 and the second member to be bonded 2 may be bonded together after correcting and correcting the deviation of the curved bonding surface 2a of the second member to be bonded 2 from the XY plane. It is important to obtain high-quality joining members.

  Moreover, in order to manufacture a higher quality bonding member, the adhesive is discharged in a state where the distance between the discharge position of the adhesive and the curved bonding surface that can obtain a good bonding result is appropriately maintained. It is necessary to supply the members to be joined. By supplying the adhesive to the member to be joined in this manner, the liquid amount, thickness, height, length, etc. of the adhesive continuously supplied to the member to be joined are substantially the same. It can be.

  FIG. 2 shows that the bonded member 1 and the bonded member 2 held by the holding bases 4 and 5 are bonded to each other after the bias correcting step described above is performed on one or both of the bonded member 1 and the bonded member 2. The state joined by the agent layer 3 is shown. 2 (A), FIG. 2 (B), FIG. 2 (C), FIG. 2 (D), and FIG. 2 (E) are FIG. 1 (A), FIG. 1 (B), FIG. 1 (C), FIG. (D) corresponds to FIG. 1 (E). The holding table 4 sucks and holds the member 1 to be joined, and the holding stand 5 sucks and holds the member 2 to be joined. The adhesive that forms the adhesive layer 3 is a liquid having a moderately adjusted viscosity, and may be supplied to one or both of the member 1 and the member 2 to be joined. The example supplied to the to-be-joined member 1 which has this joining surface 1a is demonstrated. Of course, an adhesive may be supplied to the flat joining surface. The above-described correction of bias and supply of adhesive will be described in detail below. In addition, the to-be-joined member in this invention may be a joining member formed by joining the to-be-joined members shown in FIG. In this case, the member 1 or the member 2 to be joined is further joined to the member to be joined which is a joining member.

  An embodiment relating to a method and apparatus for manufacturing a member to be bonded that realizes the above-described conditions will be described. FIG. 3 is a diagram showing the configuration in a simplified manner so that it is easy to explain the correction process for correcting the deviation in the curvature direction of the member 1 to be joined having a curved joining surface 1a in the embodiment according to the present invention. In the present invention, the following operations for measuring and registering data are performed at a stage before joining the members 1 and 2 to be joined. Here, the deviation in the curvature direction indicates a deviation in the Z direction in which the joint surface of the curved surface is perpendicular to the XY plane.

  First, the basis for correction of the deviation in the curvature direction of the members to be joined will be described with reference to FIGS. For the convenience of explanation, the reference bonded member placed in the proper mounting mode on the holding table 4 is indicated by the symbol “1”, and the standard bonded member mounted in the appropriate mounting mode of the holding table 5 is used. The member is indicated by the symbol “2”. Here, “the reference member to be joined“ 1 ”or“ 2 ”is placed on the holding table 4 or 5 in an appropriate mounting manner” means that the holding table 4 or 5 has a predetermined position, and This means that the deviation in the curvature direction is placed on the holding table 4 or 5 with the allowable range.

  As shown in the flowchart of FIG. 4, in step 1 (S <b> 1), the appropriate placement mode on the holding table 4 is obtained in advance for the arbitrarily selected member 1 to be joined. In step 2 (S2), the reference workpiece obtained by measuring the reference workpiece “1” held on the holding table 4 in the appropriate mounting mode from a preset measurement position (referred to as measurement reference position). Position data indicating the position of the joining member “1” is registered as reference position data. In step 3 (S3), the position of the bonded member 1 placed on the holding table 4 is measured, and the obtained position data is stored as the measured position data of each bonded member 1. In step 4 (S4), the reference position data and the measurement position data are calculated, and the deviation in the curvature direction of the member to be joined 1 is corrected so that the measurement position data falls within an allowable range.

  Referring to FIG. 3 in more detail, first, as described above, arbitrarily selected members 1 and 2 are defined as reference members 1 and 2 and the reference member 1 is held. The base 4 and the reference joined member “2” are placed at predetermined positions on the holding stand 5, and the inclination of the reference joined member is adjusted appropriately so that there is no deviation (bias) in the curvature direction from the experiment. A proper mounting mode is obtained. At this time, the holding table 4 and the holding table 5 are in the initial setting positions and are not biased with respect to the XY plane. Therefore, the reference bonded members “1” and “2” placed in the appropriate placement manner of the holding table 4 and the holding table 5 are on the XY plane on the holding table 4 and the holding table 5. It is not biased and is held at a predetermined position.

  In FIG. 3, as the position measurement means for measuring the position data of the reference members to be joined “1” and “2”, the distance measurement means 6 is used as a specific example at a preset measurement reference position. Specifically, three laser displacement meters 6a, 6b, 6c are provided at the respective measurement reference positions. The distance measuring means 6 measures the distance between the reference bonded member “1” held on the holding table 4 in the appropriate mounting mode and the measurement reference position. Similarly, three laser displacement meters 7 a, 7 b, 7 c are provided as distance measuring means 7 at the measurement reference position set in advance in the respective measurement reference positions, and are held in the appropriate mounting manner of the holding base 5. The distance between the measured reference bonded member “2” and the measurement reference position is measured. The distance measuring means 6 and 7 are not limited to the three laser displacement meters 6a to 6c and 7a to 7c. The position measuring unit may be a CCD imaging processing unit that can measure the position data of the reference bonded members “1” and “2”.

  The distance measurement means 6 and 7 are not affected by the distance measurement means 6 and 7 without hindering the operation of other members and mechanisms such as the holding base 4, the holding base 5, and an adhesive discharge mechanism described later. Is a position at which the distance between the measurement reference position and the measurement points of the reference bonded members “1” and “2” can be accurately measured. In this embodiment, the distance measuring means 6 and 7 measure the distances between the three measurement reference positions and the corresponding measurement points of the reference bonded members “1” and “2”, and the measurement. The measured distance is registered in the CPU 8 as a measurement reference distance at each measurement reference position. The measurement reference positions of the three laser displacement meters 6a to 6c may or may not be the same distance from the XY plane. The same applies to the three laser displacement meters 7a to 7c.

  Next, an example of an outline of adhesive discharge position control will be described with reference to FIG. In step 5 (S5), the adhesive is discharged to the reference bonded member “1” held in the above-described appropriate mounting manner on the holding table 4, and the bonding is performed when a bonding result within an allowable range is obtained. The measurement distance from the agent discharge port to the reference bonded member is registered as the reference discharge distance. In step 6 (S6), the distance to the bonded member 1 is measured while discharging the adhesive to the bonded member 1 held on the holding table 4 in an appropriate placement mode, and the distance is measured. Remember. In step 7 (S7), the adhesive discharge position is controlled so that the difference between the measured distance and the reference discharge distance is within an allowable range.

  Referring to FIG. 3, the dispenser 9a of the adhesive discharge mechanism 9 starts discharging the liquid adhesive from the discharge needle 9b at the start position at an appropriate distance above the reference bonded member “1”. The adhesive is discharged while moving above the member to be joined “1”, and the discharge of the adhesive is ended at the end position. At this time, as the dispenser 9a moves, the distance from the start of discharge of the adhesive to the reference bonded member “1” from the end of discharge is measured, and the measurement distance at which the bonding result within the allowable range is obtained is used as a reference. The discharge distance is registered in the CPU 8. In the description, for convenience, a set of the reference discharge distances at each measurement point registered in the CPU 8 or a line connecting the reference discharge distances at adjacent measurement points in the shortest is referred to as a reference discharge distance line.

  More specifically, as shown in FIG. 3, in addition to the dispenser 9a and its discharge needle 9b, the adhesive discharge mechanism 9 includes a rail member 9c extending in the X direction, a position adjusting member 9d moving along the rail member 9c, and the like. Consists of. The position adjusting member 9d not only can move along the rail member 9c to move the dispenser 9a and the discharge needle 9b in the X direction, but also moves up and down in the Z direction (not shown) and also in the Y direction. A movable arm member is provided, and the dispenser 9a fixed to the arm member can be moved in both the Z direction and the Y direction. A distance measuring device 10 such as a displacement sensor is fixed at a predetermined position of the dispenser 9a.

  The distance measuring device 10 indicates how far the tip of the discharge needle 9b of the dispenser 9a, that is, the adhesive discharge port, is away from the reference bonded member “1” held on the holding table 4 in the appropriate placement mode. It is for detection. The dispenser 9a moves above the reference bonded member “1” held in the appropriate mounting manner on the holding table 4 while discharging the liquid adhesive from the discharge needle 9b, and the distance measuring device 10 is the holding table. 4, the distance to the reference bonded member “1” held in the above-described appropriate placement mode is measured and set as the measurement distance. By repeating such an operation, the measurement distance from the discharge start position to the discharge end position when the application result within the allowable range is obtained is registered in the CPU 8 as the reference discharge distance.

  As described above, the reference bonded member “1” held in the appropriate mounting manner on the holding bases 4 and 5 by the CPU 8 at the stage before the bonded members 1 and 2 are continuously bonded. "," The measurement reference distance at each measurement reference position is registered, and the reference discharge distance at the measurement position is registered. At the time of the joining step, the measurement target distance and the reference discharge distance can be used to correct the members 1 and 2 placed on the holding bases 4 and 5 into an appropriate placement mode, and the adhesive 3 is preferable. It can discharge to the to-be-joined member 1 or 2 from a position.

  Below, joining of the to-be-joined member 1 and the to-be-joined member 2 which has a curved joining surface as shown in FIG.2 (C) as an example is demonstrated. First, with reference to FIG. 3, before explaining the bias adjusting step of the members 1 and 2 mounted on the holding bases 4 and 5 by a member supply mechanism (not shown), the bias adjusting mechanism and the like will be described. The holding bases 4 and 5 are fixed to inclination adjusting members 11 and 12 such as gonio stages, respectively. The tilt adjusting member 11 is coupled to the reversing mechanism 14 by a shaft member 13. The tilt adjusting member 12 that adjusts the tilt of the holding table 5 is fixed to the lifting mechanism 15 and is lifted or lowered in the direction perpendicular to the XY plane (Z direction) together with the holding table 5 by the lifting mechanism 15. can do.

  The control circuit 16 receives a signal from the CPU 8 and gives a control signal g1 to the tilt adjusting member 11 and a control signal g2 to the tilt adjusting member 12. In addition, the control circuit 16 provides the control signal g3 to the reversing mechanism 14, the control signal g4 to the lifting mechanism 15, and the control signal g5 to the position adjusting member 9d. The position adjusting member 9d operates in response to a control signal g5 from the control circuit 16, and moves the dispenser 9a in the XY plane direction or moves it up or down in the Z-axis direction. 9b position adjustment is performed. The holding bases 4 and 5 include a suction holding mechanism that sucks and holds the members 1 and 2 to be joined.

  When the joined members 1 and 2 are placed on the holding bases 4 and 5, respectively, first, the distance measuring means 6 and 7 measure the distances at a plurality of locations of the joined members 1 and 2. Input to CPU8. The CPU 8 calculates the registered reference distances and the corresponding measurement distances, operates the tilt adjustment members 11 and 12 until the difference between the reference distances and the measurement distances is within an allowable range, and holds the holding table. 4 and 5 are adjusted to correct the deviation of the members 1 and 2 with respect to the XY plane within an allowable range. In this way, the members 1 and 2 are held on the holding bases 4 and 5 in the appropriate manner.

  As soon as the deviation of the bonded members 1 and 2 is corrected, the control circuit 16 gives a signal to the position adjusting member 9d to move the dispenser 9a in the X and Y directions. Start measuring distance. First, the distance measuring device 10 inputs a signal of the measured distance to the bonded member 1 at a preset discharge start position to the CPU 8. The CPU 8 calculates the input measurement distance signal and the already registered reference discharge distance signal, and sends the control signal g5 to the position adjustment member 9d through the control circuit 16 so that the difference between them is within the allowable range. give. When the measured distance at the discharge start position is within an allowable range with respect to the reference discharge distance, the liquid adhesive is discharged from the discharge needle 9b of the dispenser 9a at the discharge start position.

  Then, as the position adjusting member 9d moves in a predetermined direction, the dispenser 9a also moves while discharging the adhesive, but the distance measuring device 10 is joined in front of the direction in which the adhesive is discharged. The distance to the member 1 is measured and a signal of the measured distance is input to the CPU 8. The control circuit 16 controls the position adjusting member 9d so that the measured distance substantially coincides with the reference ejection distance line registered in the CPU 8.

  In other words, the position adjusting member 9d is controlled by the control signal g5 from the control circuit 16 while adjusting the position of the dispenser 9a so that the adhesive discharge position of the discharge needle 9b of the dispenser 9a substantially coincides with the reference discharge distance line. When the discharge needle 9b of the dispenser 9a reaches a predetermined discharge end position, the discharge is ended. Thereafter, the position adjusting member 9d returns the dispenser 9a to the original position. FIG. 6 shows an example of the adhesive pattern 3 a discharged to the member 1 to be joined. The distance between the adhesive discharge port at the tip of the discharge needle 9b of the dispenser 9a and the bonding surface 1a of the bonded member 1 to which the adhesive is discharged is preferably substantially constant regardless of the curved surface. The same applies to the members to be joined whose joining surfaces are flat.

  Moreover, you may perform the joining process of the to-be-joined members 1 and 2 described above as follows. In the example described above, in each joining process of the joined members 1 and 2, the distance measuring device 10 measures the distance to the joined member 1 in front of the direction in which the adhesive is discharged, and the discharge needle 9b of the dispenser 9a. Although the adhesive is discharged, the adhesive may be discharged from the discharge needle 9b of the dispenser 9a while measuring the distance to the member 1 to be bonded only at the time of initial bonding or only at the time of predetermined bonding. At this time, the measured distance data is input to the CPU 8 and registered. The CPU 8 gives a control signal to the position adjusting member 9d through the control circuit 16 based on the registered distance data at the first joining or joining other than the predetermined joining. In response to the control signal from the control circuit 16, the position adjusting member 9d moves the dispenser 9a so that the adhesive discharge position of the discharge needle 9b of the dispenser 9a substantially coincides with the reference discharge distance line, and the discharge needle 9b The discharge of the adhesive is started at the discharge start position, and the discharge is ended when the discharge end position is reached.

  After the discharge needle 9b of the dispenser 9a finishes discharging the adhesive at the discharge end position, the reversing mechanism 14 receives the control signal g3 from the CPU 8, rotates the shaft member 13, and the tilt adjusting member 11 as shown in FIG. Together with the holding base 4, the member 1 to be joined is accurately inverted 180 degrees. In this state, the curved bonding surface 1 a of the member 1 to be bonded is accurately opposed to the curved bonding surface 2 a of the member 2 to be bonded. Next, the raising / lowering mechanism 15 raises the to-be-joined member 2 with the holding stand 5 in the Z-axis direction by the control signal g4 from the control circuit 16, and the curved joining surface 1a of the to-be-joined member 1 is joined to the joining surface of the to-be-joined member 1. The liquid is brought into contact with the adhesive pattern 3a applied to 1a. Further, the elevating mechanism 15 applies a pressure of a predetermined size between the joining surface 1a of the member to be joined 1 and the curved joining surface 2a of the member to be joined 2 for a predetermined time, and FIG. As shown in C), the adhesive layer 3 is formed by spreading the adhesive between the bonding surface 1 a of the member 1 to be bonded and the bonding surface 2 a of the member 2 to be bonded. Thereafter, the adhesive layer 3 is cured by a curing method suitable for the characteristics of the adhesive.

  By sequentially performing the joining steps described above, even if both the joining surface 1a of the member 1 to be joined and the joining surface 2a of the member 2 to be joined are curved surfaces, preferable joining can be performed, and a high-quality joining member Can be manufactured. In addition, the above-described joining process basically includes a curved joint surface and a flat joint surface as shown in FIGS. 1A, 1B, and 1D, and a curved joint surface and a curved surface. It can be used in the same manner when the members to be joined having the joining surfaces are joined together.

  However, when joining a member 1 having a curved joining surface 1a and a member 2 having a planar joining surface 2 as shown in FIGS. Since the member 2 to be joined is not biased with respect to the XY plane on the holding table 5, the distance measurement by the distance measuring means 7 can be omitted. Therefore, the distance measuring means 7 is not necessarily provided. In particular, as shown in FIGS. 1B to 1E, when a member 1 to be joined having a concave curved joining surface 1a and a member 2 to be joined are joined, a voltage as described later is used. When the application method is employed, better bonding can be performed.

  In the joining member, it is preferable that bubbles are not present in the adhesive layer 3 between the joined members 1 and 2 as much as possible. For this purpose, an adhesive that has been degassed in advance is used so that no bubbles are included when the adhesive is discharged from the discharge needle, and bubbles are also generated when the adhesive discharged to the bonded member is spread. Great care is taken not to include it. When joining the members 1 and 2 in the combination shown in FIG. 1A, the ridge portion of the convex curved joining surface 1a of the member 1 to be joined, or the plane of the member 2 to be joined facing the ridge portion. If a liquid adhesive is discharged to the joint surface 2a, the joint surface comes into contact with the liquid in a state close to point contact. In this case, the portion that comes into contact with the liquid is located in the central portion between the members 1 and 2 and extends from the central portion toward the outer periphery, so that bubbles are less likely to be included in the adhesive during spreading. Furthermore, as disclosed in the above-mentioned Patent Document 2 and the like, if an electric field is formed by applying a voltage between the member to be joined and the member to be joined, bubbles are further generated in the adhesive when the adhesive is spread. Can be reduced, and the adhesive layer 3 with few bubbles can be formed.

  As shown in FIGS. 1 (B) to 1 (D), when joining a member to be joined 1 having a concave curved joint surface 1a and a member 2 to be joined, the concave curved joint surface 1a is formed. Even if the adhesive is discharged to the bottom, which is the central part of the member 1 to be joined, the electric field application method disclosed in the above-mentioned Patent Document 2 is adopted, and the central part of the member 1 to be joined is more than the periphery By increasing the electric field strength, bubbles contained in the adhesive layer 3 can be reduced. In this case, although not shown, a power source is connected between the holding bases 4 and 5 serving as electrodes, and an electric field is formed between the members 1 and 2 to be joined. When the adhesive is discharged to the bottom, which is the central part of the member 1 to be joined, having the concave curved joining surface 1a and reversed 180 degrees, the dripping of the adhesive occurs due to surface tension and gravity. Since liquid contact may be performed first around the center of the member 1 to be joined, the center of the adhesive is surrounded by the surrounding adhesive, making it difficult for air to escape. It becomes easy to include air bubbles.

  Therefore, when the holding bases 4 and 5 are also used as electrodes, as shown in FIG. 8, by using the holding bases 4 and 5 having a high dielectric constant at the central portion and a low dielectric constant around the central portion, an adhesive layer is obtained. The bubble content in can be improved. 8A and 8B, the dielectric constant of the central portion 4a of the holding bases 4 and 5 is lower than that of the surrounding portion 4b surrounding the central portion 4a, and the effect of voltage application is improved. Although not shown, when the holding bases 4 and 5 are made of a metal plate to be an electrode and a synthetic resin having elasticity, metal powder is mixed into the central portion 4a of the synthetic resin, and the mixing density of the central portion 4a is determined by the mixing density. By making it higher than the surroundings, the dielectric constant of the central portion 4a is lowered. Further, the central portion 4a is made of a metal material, and the surrounding portion 4b is made of an electrically insulating material, whereby the voltage application distance of the central portion 4a is made smaller than that of the surrounding portion 4b and compared with that of the surrounding portion 4b. Thus, the electric field strength at the central portion 4a can be increased. In addition, it is preferable to form an electric field effectively between two to-be-joined members using a high voltage compared with the case where two to-be-joined members with a flat joining surface are joined.

  In the case of FIG. 8 (B), the distance between the joint surfaces 1a and 2a of the concave curved surface becomes the widest, so that when the adhesive is insufficient to spread over the entire joint surface, the joint surfaces 1a and 2a You may inject | pour all or one part of an adhesive agent from the side surface. Further, in order to omit the reversing step and to prevent the discharged adhesive from being deformed or dripping, the bonding surface of the member to be bonded is positioned on the lower side, and the discharge needle 9b is positioned on the lower side of the member to be bonded. It is preferable that the discharge port of the discharge needle 9b be close to the joint surface facing downward and the adhesive is discharged onto the joint surface. As shown in FIGS. 8A and 8B, by increasing the electric field strength of the central portion 4a as compared with the surrounding portion 4b, the adhesive liquid in the central portion protrudes by the action of the electric field, and the tip portion 3b. Form. When the member 1 to be joined comes into contact with the member 2 to be joined, the tip 3b of the adhesive liquid in the central portion first comes into contact with the member 2 by point contact, and the liquid contact spreads from the point 3b to the periphery. go. This reduces the inclusion of bubbles during the spreading of the adhesive.

  In the embodiment described above, the dispenser 9a has been described as one unit. However, when the members 1 and 2 are long and the discharge time of the bonding time is required to be shortened, two or more dispensers are simultaneously used. The adhesive may be discharged simultaneously by moving along different portions of the reference discharge distance line. 8B, an adhesive may be supplied to the concave curved joint surfaces 1a and 2a of the members 1 and 2 to be joined. As shown in FIGS. 2 and 8, the holding surfaces of the holding bases 4 and 5 that hold the members 1 and 2 to be joined are shaped to match the shape of the surface to be joined of the members 1 and 2 or joined at three points. The shape for holding the members 1 and 2 is preferable for firmly holding the members 1 and 2 to be held by the holding bases 4 and 5. Note that the adhesive discharge mechanism described above can also be applied to the joining of joint members having a flat joining surface, and a desired adhesive pattern is automatically applied to one or both of the members 1 and 2 to be joined. Can be formed.

DESCRIPTION OF SYMBOLS 1 ... To-be-joined member 2 with a curved joining surface ... To-be-joined member 3 ... Adhesive layer 3a ... The pattern 4 of the discharged adhesive agent ... The holding stand 5 of the to-be-joined member 1 ... Holding base 6 of the member 2 to be joined ... Distance measuring means 6a, 6b, 6c as position measuring means ... Laser displacement meter (an example)
7. Distance measuring means 7a, 7b, 7c ... Laser displacement meter (example)
8 ... CPU8
DESCRIPTION OF SYMBOLS 9 ... Adhesive discharge mechanism 9a ... Dispenser 9b ... Discharge needle 9c ... Rail member 9d ... Position adjustment member 10 ... Distance measuring device 11 ... Tilt adjustment member 12 ... Inclination adjusting member 13 ... shaft member 14 ... reversing mechanism 15 ... elevating mechanism 16 ... control circuit

Claims (15)

In at least one joining surface of two to-be-joined members to be joined is a curved surface, and in the joining method of the to-be-joined member for joining the curved surface and the joining surface of the other to-be-joined member,
Prior to joining, a reference member to be joined arbitrarily selected from the members to be joined having a curved joining surface is held at a proper mounting position obtained in advance on a holding table, and the position of the reference member to be joined is indicated. Register the reference position data,
Placing the joined member having a curved surface on the holding table;
Measuring data indicating the position of the member to be joined and storing it as measurement position data;
The reference position data and the measurement position data are calculated, and the holding base is biased in the curvature direction so that the measurement position data is within an allowable range of the reference position data, and the curvature direction of the joined members is calculated. Correcting the bias; and
Supplying an adhesive to at least one of the two members to be joined;
Joining the two members to be joined by the adhesive;
The manufacturing method of the joining member characterized by comprising. In claim 1,
The reference position data is a distance between a measurement reference position at a certain distance from the reference bonded member and a measurement point of the reference bonded member,
The method of manufacturing a joining member, wherein the measurement position data is a distance between a plurality of the measurement reference positions and measurement points of the joined member corresponding to the plurality of measurement reference positions. In claim 1 or claim 2,
When joining the joining surfaces of the two joined members, the difference between the reference position data and the measurement position data of the joined member having the curved joining surface is calculated and the difference is within an allowable range. A method of manufacturing a joining member, wherein the holding base holding one of the joined members is biased so as to be within, and the deviation in the curvature direction of the joined member is corrected. In claim 1 or claim 2,
The joint surfaces of the two members to be joined are curved surfaces, and when joining the joint surfaces of these curved surfaces, the difference between the reference position data and the measurement position data of one or both of the members to be joined is calculated. In order to obtain the difference within an allowable range, the holding table holding one or both of the members to be joined is biased,
The manufacturing method of the joining member characterized by correcting the bias | inclination of the curvature direction of the said to-be-joined member of one or both. In any one of Claims 1-4,
Before bonding, the adhesive is discharged to the bonding surface of the reference bonded member held in the proper mounting position obtained in advance in the holding table,
Obtain the distance from the adhesive discharge port from which the bonding result within the allowable range is obtained to the bonding surface of the reference bonded member, and register the measurement distance as the reference discharge distance.
Obtain the distance from the adhesive discharge port to the joined surface of the member to be joined,
Controlling the position of the adhesive discharge port so that the distance is within the allowable range of the reference discharge distance;
A method for manufacturing a joining member, wherein the adhesive is discharged from the adhesive discharge port onto a joining surface of the member to be joined. In claim 5,
The reference member to be bonded is placed at an appropriate position determined in advance on a holding table, and the adhesive is discharged from the adhesive discharge port located away from the bonding surface of the reference member to be bonded. Discharge to the bonding surface, find an appropriate discharge distance from the adhesive discharge start position to the adhesive discharge end position, register the discharge distance as a reference discharge distance,
Obtain the distance from the adhesive discharge port to the member to be joined placed on the holding table,
Controlling the position of the adhesive discharge port so that the distance is within the allowable range of the reference discharge distance;
A method for manufacturing a joining member, wherein the adhesive is discharged from the adhesive discharge port onto a joining surface of the member to be joined. In at least one joining surface of two to-be-joined members to be joined is a curved surface, and in the joining method of the to-be-joined member for joining the curved surface and the joining surface of the other to-be-joined member,
Prior to joining, a reference member to be joined arbitrarily selected from among the members to be joined having a curved joining surface is placed at an appropriate position determined in advance on a holding table, and the joining surface of the reference joining member An appropriate discharge distance from the adhesive discharge port to the adhesive discharge start position and the adhesive discharge end position by discharging the adhesive from the adhesive discharge port located away from the adhesive to the bonding surface of the reference bonded member And register the discharge distance as a reference discharge distance,
Obtain the distance from the adhesive discharge port to the member to be joined placed on the holding table,
Controlling the position of the adhesive discharge port so that the distance is within the allowable range of the reference discharge distance;
A method for manufacturing a joining member, wherein the adhesive is discharged from the adhesive discharge port onto a joining surface of the member to be joined. In any one of Claims 1-7,
When an electric field is formed between the two members to be joined, when one of the joining surfaces of the members to be joined is a concave curved surface, the concave bottom portion of the concave joining surface is formed. The method of manufacturing a joining member, wherein the strength of the electric field formed is higher than the electric field around the concave bottom. In at least one joining surface of two to-be-joined members to be joined is a curved surface, and in the joining device for a to-be-joined member for joining the curved surface and the joining surface of the other to-be-joined member,
Before the joining, an inclination adjusting means for holding a reference joined member arbitrarily selected from the joined members having the curved joining surface at an appropriate placement position obtained in advance in the holding table;
Position state measuring means for obtaining position data in which the mounting state of the reference bonded member is within an allowable range;
CPU for registering reference position data indicating an appropriate position state of the reference joined member as the position data;
With
A member to be joined having a curved joining surface is placed on the holding table;
The position state measuring means measures position data of the bonded members and inputs the position data to the CPU as measured position data.
The CPU calculates the reference position data and the measurement position data and outputs a control signal. Upon receiving the control signal, the tilt adjusting means is within an allowable range of the reference position data corresponding to the measurement position data. The holding member is displaced in the curvature direction so that the deviation in the curvature direction of the member to be joined is corrected. In claim 9,
The position state measuring means is a distance measuring means for measuring a distance between the measurement position and a measurement point of the joining surface of the reference joined member,
The reference position data corresponds to a reference distance that is a distance between a measurement position and a measurement point on the joint surface of the reference workpiece.
The apparatus for manufacturing a joining member, wherein the measurement position data corresponds to a measurement distance indicating a distance between a measurement reference position and the joined member having a curved surface. In claim 10,
The distance measuring means is composed of a plurality of laser displacement meters, and these laser displacement meters are arranged at the respective measurement reference positions, and the laser displacement meters are arranged between the respective measurement reference positions and the measurement points of the reference bonded members. Measure the distance between them, and input and register these distances as the reference distance of each measurement point to the CPU,
Alternatively, the plurality of laser displacement meters measure distances between the respective measurement reference positions and measurement points of the bonded members, and input these distances to the CPU as the measurement distances of the respective measurement points. The manufacturing apparatus of the joining member characterized by these. In any one of Claims 9-11,
The reference surface-bonded member is placed at an appropriate position determined in advance on a holding table, and an adhesive is discharged from an adhesive discharge port located away from the reference surface-bonded member bonding surface. To obtain an appropriate discharge distance from the measurement reference position to the adhesive discharge start position and the adhesive discharge end position, and register the discharge distance as a reference discharge distance,
Find the distance between the member to be joined placed on the holding table and the measurement reference position,
The position of the adhesive discharge port is controlled so that the measured distance is within the allowable range of the reference discharge distance, and the adhesive is discharged from the adhesive discharge port to the bonding surface of the bonded member. The manufacturing apparatus of the joining member characterized by the above-mentioned. In any one of Claims 9-12,
When an electric field is formed between two members to be joined by an electrode connected to a power source to form an electric field, one of the joined surfaces is a concave curved surface and the other joined surface Is a concave curved surface or plane, the strength of the electric field formed on the bottom of the concave curved surface is higher than the electric field around the bottom. In any one of Claims 9-13,
When an electric field is formed by applying a voltage between two members to be joined via a dielectric substance by an electrode connected to a power source, one of the joining surfaces of the members to be joined is a concave curved surface. In some cases, the joining member manufacturing apparatus according to claim 1, wherein a dielectric constant of the dielectric material in the vicinity of the concave bottom portion of the concave curved surface is lower than other portions. In at least one joining surface of two to-be-joined members to be joined is a curved surface, and in the joining device for a to-be-joined member for joining the curved surface and the joining surface of the other to-be-joined member,
An inclination adjusting means for adjusting a reference to-be-joined member arbitrarily selected from the to-be-joined members having the curved surface to be held at an appropriate placement position obtained in advance in the holding base before joining,
An adhesive discharge mechanism for discharging an adhesive from the adhesive discharge port of a discharge needle located away from the bonding surface of the reference bonded member to the bonding surface of the reference bonded member;
A distance measuring means for obtaining an appropriate discharge distance from the adhesive discharge start position to the adhesive discharge end position;
A CPU for registering the discharge distance as a reference discharge distance;
With
Obtain the distance from the adhesive discharge port to the member to be joined placed on the holding table with the distance measuring means,
Controlling the position of the adhesive discharge port of the discharge needle so that the measured distance is within the allowable range of the reference discharge distance;
An apparatus for manufacturing a joining member, wherein the adhesive is ejected from the adhesive ejection port onto a joining surface of the joined member.

Images