JP4151339B2 - Slide mechanism and transport device using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide mechanism having a telescopic function and a transport device using the same.
[0002]
[Prior art]
Conventionally, a conveying apparatus that conveys a workpiece moves a conveying table using a slide mechanism shown in FIGS. 10A, 10B, and 10C, or FIGS. 11A, 11B, and 12C. (C) and the like, which are performed by extending and contracting the arm using a transfer arm having a link mechanism.
10 is provided with a linear motion guide bearing comprising a slide rail 203 and a slide block 204 attached to a first block 202 on a base 201, and on a slide block 204 that moves linearly on the slide rail 203. Is attached with a transfer table 205 on which the work 213 is transferred, and gives a reciprocating motion to the transfer table 205 within a range in which the slide block 204 can move on the slide rail 203.
[0003]
In the present conveying device, the conveying amount is determined within the range of the distance between the axes of the first pulley 207 and the second pulley 208. Therefore, when trying to obtain a large transport amount, naturally, a transport device having a length corresponding to the distance must be prepared, so that not only the installation space and the storage space become large, but also in terms of cost. Is also not preferred.
[0004]
In addition, the conventional transfer device shown in FIGS. 11 and 12 uses a transfer arm having a link mechanism. The first arm 309 is formed by a pair of link mechanisms including a first arm 309 and a second arm 312. The transfer amount corresponding to the pivot angle given to the transfer arm 316 connected to the second arm 312 and the work 319 loaded on the transfer arm 316 are given. Since this apparatus is a link system using pin engagement, the height of the work 319 is basically fluctuated up and down due to conveyance by the angle of the first arm 309 or the first arm 309 to avoid this. There arises a problem such that the transport distance is limited to an extremely narrow range in which the position of the shaft 315 of the second arm 312 at the angle 0 (vertical position) is kept horizontal.
In order to expand this conveyance range, the length and strength of the first arm 309 and the second arm 312 must be increased, and a great increase in space and cost is inevitable.
[0005]
[Problems to be solved by the invention]
As described above, in the transfer device using the conventional slide mechanism (FIG. 10) and the transfer arm (FIGS. 11 and 12) having the link mechanism, the required transfer distance (stroke value) of the workpiece is the same as that of the slide rail or the transfer arm. This is a factor that determines the length, and this is also a factor that determines the external size of the transfer device (including the area that does not interfere with the rest of the transfer arm in the case of the transfer arm). The increase / decrease affects the outer size of the transfer device.
[0006]
For this reason, for example, when designing using a transfer device having the above-described mechanism for transferring the workpiece inside the manufacturing apparatus, the outer size of the transfer device determined by the stroke value required for transferring the workpiece is the outer shape of the manufacturing apparatus. This is also a factor that affects the size. When the stroke value increases, the proportion of the area occupied by the transfer device in the manufacturing apparatus increases and the outer size of the manufacturing apparatus tends to increase.
For this reason, if the stroke value is restricted, for example, when the device is downsized or the outer size of the manufacturing device is already determined, it is difficult to secure the required stroke value. Further, in recent years, the increase in the size of a workpiece to be conveyed is one of the factors that increase the outer size of the conveying device.
[0007]
As described above, in the conventional conveyance device using the slide mechanism, the stroke value of the drive mechanism for moving the conveyance table of the slide mechanism needs to ensure a stroke value equivalent to that of the slide mechanism. Is a factor that determines the size of the drive mechanism. For this reason, an increase in the stroke value of the slide mechanism causes an increase in the stroke value of the drive mechanism, resulting in an increase in the outer size of the transport device.
[0008]
Further, in the conventional transfer arm having a link mechanism, each sprocket used for the first arm and the second arm is not a reduction ratio of the design value in which the transfer arm moves horizontally, but a tooth having an approximate design value. In practice, it is almost impossible to move the transfer arm while keeping the horizontal and height constant.
In addition, the mechanism maintains the horizontal and height of the transfer arm by adjusting the tension of the respective roller chains stretched between the first arm and the second arm. Since deviation is likely to occur, there is a need for a dimensional allowance for positioning at a workpiece to be transferred or a transfer point of the workpiece, which is not suitable for equipment that requires accurate workpiece transfer.
[0009]
Also, in terms of maintenance man-hours, the roller chain lacks accurate reproducibility of positioning, and it takes experience and time to adjust the tension to accurately synchronize the left and right arm movements. Because the tension changes significantly due to wear and wear, it is necessary to adjust the roller chain tension constantly in order to move the transfer arm horizontally and at a constant height. It takes.
[0010]
In view of the above circumstances, an object of the present invention is to provide a slide mechanism having a large conveyance distance and having a compact extension / contraction function and a conveyance device using the slide mechanism.
[0011]
[Means for Solving the Problems]
  The slide mechanism of the present invention is configured as follows.
1) Driven by a motor disposed in the middle position of the movement range of the conveyance table, and the conveyance table is coupled with the upper and lower slide rails back to back in a linear direction by self-running or other running with respect to the fixed base. Arranged on the second moving means on the first moving means that moves through the double slide rail that is configured, moves in conjunction with the movement of the first moving means, and the amount of movement is superimposed. Has beenIn the slide mechanism,
  The first moving means is a rotating arm that pivots about a hinge fixed on a fixed base, a conversion device that converts a circular motion by a cam follower and a cam follower guide into a linear motion, and the second moving means is the other And a portion of the wall conduction member in the other wall conduction device is directly or indirectly fixed to the fixed base,
  And a slide block that is directly or indirectly fixed to the fixed base and guides the first moving means, another slide block that is fixed to the transport table side, the slide block and the other slide block, and an upper portion and a lower portion thereof. A double slide rail configured by connecting back and forth upper and lower slide rails which are common guides of the slide block and the other slide blocks fitted together, and a transport table coupled to the hooking conductive member of the second moving means The second moving means moves in conjunction with the first moving means, and the movement amount of the transfer table is determined by the movement amount of the first moving means and the movement amount in the second moving means. Is a superposition of,
Also, the amount of movement superimposed is not more than twice the amount of movement by the first moving means..
[0012]
3) In the above 1), the first moving means is a rotating arm that pivots around a hinge fixed on a fixed base, a cam follower, and a conversion device that converts an arc motion by a cam follower guide into a linear motion. (2) The moving means is the other wall conduction device, and one portion of the wall conduction member in the other wall conduction device is directly or indirectly fixed to the fixed base.
[0015]
2)  the above1)It is a conveying apparatus using the described slide mechanism.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
1A, 1B, 1C, and 1D are explanatory diagrams for explaining the present embodiment, FIG. 1A is a front view of the present embodiment, and FIG. Is a plan view, FIG. 1C is a side view, and FIG. 1D is a cross-sectional view taken along line AA of FIG.
2A and 2B are explanatory diagrams for explaining a state at the end of the operation in this embodiment, FIG. 2A is a plan view, and FIG. 2B is a side view.
In the figure, 1 is a base, 2 is a first slide block, 3 is a first slide rail, 4 is a second slide rail, 5 is a second slide block, 6 is a transfer table, 7 is a first block, and 8 is a second block. Block, 9 is a first pulley, 10 is a second pulley, 11 is a timing belt, 12 is a third block, 13 is a fourth block, 14 is a ball screw, 15 is a first support block, 16 is a second support block, 17 Is a nut, 18 is a motor, 19 is a motor plate, 20 is a coupling, and 21 is a workpiece.
[0017]
In the present embodiment, the first moving means is basically a system that moves linearly with respect to the base 1 and the movement amount is linearly moved in conjunction with the movement of the first moving means. The second moving means is a system, and the linear movement of the first moving means includes a screw conduction device, in particular, a conduction device using a ball screw.
[0018]
The present embodiment will be described in detail below with reference to the drawings.
In FIG. 1, a first slide rail 3 as a first linear motion guide bearing and a second slide rail 4 as a second linear motion guide bearing are coupled back to back on a base 1 (hereinafter referred to as a double rail). The slide rail 22). Two first slide blocks 2 connected to the first slide rail 3 side of the double slide rail 22 are fixed to the base 1 in order to provide rigidity.
[0019]
That is, the first moving means is provided with a conduction device using the ball screw and a double slide rail 22 guided by the first slide block 2. Further, the second moving means includes a second sliding block 5 that uses the double sled rail 22 as a guide and a timing belt 11 that is a hooking conductive member fixed to a transport table 6 on the second slide block 5. A transmission device (timing belt transmission device) is provided.
[0020]
The transfer table 6 is attached to the upper surface of the second slide block 5 of the second moving means that fits on the second slide rail 4 side of the double slide rail 22. A first block 7 and a second block 8 that hold the rotating first pulley 9 and the second pulley 10 are provided at both ends of the double slide rail 22.
The timing belt 11 stretched between the two pulleys starts from the center of the two connected first slide blocks 2, and the center of the second slide block 5 comes to a position half the length of the timing belt 11. In this manner, the third block 12 and the fourth block 13 are sandwiched and fixed to the base 1 and the transport table 6 respectively.
Further, the belt lengths from both sides of the first slide block 2 to both sides of the second slide block 5 through the first pulley 9 and the second pulley 10 are uniform.
[0021]
On the base 1, a first support block 15 and a second support block 16 for holding the ball screw 14 and a motor plate 19 for fixing the motor 18 are provided. The shaft end of the ball screw 14 and the output shaft of the motor 18 are connected by a coupling 20, and a first moving means is provided by a nut 17 of the ball screw 14 that linearly moves between the first and second support blocks by the rotation of the ball screw 14 by the motor 18. Is given a linear movement.
[0022]
FIGS. 2A and 2B show a state in which the movement amount is superimposed on the conveyance table on the second moving unit in conjunction with the linear movement of the first moving unit.
That is, when the ball screw 14 rotates clockwise as viewed from the motor 18 side, the nut 17 moves in the direction of the arrow n1. Similarly, the first block 7 holding and fixing the nut 17 is also moved in the same direction, so that the first block 7 is pushed by the first block 7 and the double slide rail 22 is fixed to the base 1. Move in the direction of. At this time, the distance between the first slide block 2 held between both sides of the slide mechanism and the first slide block 2 located between the second pulleys 10 is the arrow A1 with the first slide block 2 as the starting point on the second pulley 10 side. In the first direction, the first pulley 9 is reduced.
[0023]
At this time, the timing belt 11 stretched between the first pulley 9 and the second pulley 10 generates a pulling force in the direction of the arrow A1 on the second pulley 10 side, whereby the first slide block 2 starts from the center. It moves horizontally through the pulley 9 and the second pulley 10 in the clockwise direction of the arrow b1. As the timing belt 11 moves, the transport table 6 fixed to the timing belt 11 also moves on the second slide rail 4 together with the second slide block 5 in the direction of the arrow A1 so that the transport table 6 extends.
When the ball screw is rotated counterclockwise, the operation is the reverse of the above.
[0024]
As described above, according to the present embodiment, the movement amount of the transfer table on the second moving means is the moving distance of the nut 17 with respect to the moving amount of the nut 17 due to the rotation of the ball screw 14 of the first moving means. As a result, the same distance is superimposed.
That is, the movement distance (N) of the nut 17 × 2 = the movement distance (S1) of the double slide rail 22 + the movement distance (S2) of the second slide block 5 = the movement distance (M) of the transfer table 6.
[0025]
In comparison with the conventional case where the same moving distance is realized by only one slide rail, the slide mechanism has a shorter overall length and is more compact. Further, since the first moving means may be moved by 1/2 of the stroke value required by the slide mechanism, the stroke value of the drive portion of the first moving means is also 1/2. Furthermore, by combining and integrating slide rails that were used in two conventional stacks, such as two-tiered, back-to-back, it is not necessary to use a conventional base plate for fixing the rail between the rails. The height can be suppressed. That is, by using the slide mechanism of the present embodiment, a double stroke value can be obtained without increasing the outer size of the transport device, which contributes to the compactness of the transport device.
[0026]
[Embodiment 2]
3 (A) and 3 (B) are explanatory views for explaining Embodiment 2 of the present invention, FIG. 3 (A) is a plan view, and FIG. 3 (B) is a side view.
In the figure, 34 is a motor plate, 35 is a fifth block, 36 is a motor, 37 is a third pulley, 38 is a fourth pulley, 39 is a second timing belt, 40 is a sixth block, and 41 is a workpiece. In addition, the same code | symbol is attached | subjected to the component same as Embodiment 1, and description is abbreviate | omitted.
[0027]
In the present embodiment, basically, in the first moving means, the ball screw conduction device in the first embodiment is replaced with a hanging conduction device using the second timing belt 39 as a hanging conduction member. As in the first embodiment, the second moving means is a hanging conduction device that uses the timing belt 11 as a hanging conduction member. Further, the first block 7 fixes the second timing belt 39 with the sixth block 40.
[0028]
The present embodiment will be described below with reference to the drawings.
The motor 36 attached to the motor plate 34 fixed on the base 1 has a third pulley 37 fixed to the motor output shaft, and the fourth pulley 38 is held by a fifth block 35 fixed on the base 1. A second timing belt 39 is stretched between the third pulley 37 and the fourth pulley 38. A part of the second timing belt 39 is fixed to the first block 7 of the first moving means by the sixth block 40, and the second belt between the third pulley 37 and the fourth pulley 38 due to the rotation of the motor output shaft. The movement of the timing belt 39 is transmitted to the first moving means side.
[0029]
When the motor output shaft rotates counterclockwise, the second timing belt 39 moves horizontally between the third pulley 37 and the fourth pulley 38 in the direction of the arrow t1. Similarly, the first block 7 to which the second timing belt 39 is fixed by the belt presser is also moved in the same direction. Due to this movement, the transfer table 6 fixed to the second slide block 5 together with the double slide rail 22 as well as the first embodiment also moves the arrow on the second slide rail 4 along with the horizontal movement of the timing belt 11 in the arrow b1 direction. It moves in the direction of A1 and the second moving means is extended. Further, when the motor output shaft is rotated counterclockwise, the operation is the reverse of the above.
[0030]
As described above, in the present embodiment, similarly to the first embodiment, the moving distance of the timing belt 39 input by the first moving means is the double slide rail 22 and the second slide that move individually in conjunction with each other. The same movement distance as the movement amount of the first movement means input by the block 5 is superimposed and moved. That is, the moving distance (T) of the timing belt 39 × 2 = the moving distance (S1) of the double slide rail 22 + the moving distance (S2) of the second slide block 5 = the moving distance (M) of the transport table 6.
[0031]
According to the present embodiment, the entire length of the slide mechanism is shortened compared to the conventional case in which the same movement distance is realized by only one slide rail, and it is compact. Further, since the first moving means may be moved by 1/2 of the stroke value required by the slide mechanism, the stroke value of the drive portion of the first moving means is also 1/2. Further, the height can be suppressed by using an integrated double slide rail, and by using the slide mechanism of the second embodiment, a double stroke value can be obtained without increasing the outer size of the transport device. In addition, the cost of the conveying device can be reduced by downsizing the conveying device and changing from the ball screw driving method to the timing belt driving method.
[0032]
[Embodiment 3]
4 (A), 4 (B) and 5 are explanatory diagrams for explaining Embodiment 3 of the present invention. FIG. 4A is a front view of the present embodiment, FIG. 4B is a side view of the present embodiment, and FIG. 5 is a diagram illustrating a work by the second moving means interlocked with the first moving means in the present embodiment. It is a figure which shows the state which moved to the longest.
[0033]
4A and 4B, 101 is a base, 102 is a side plate, 103 is a first plate, 104 is a third slide block, 105 is a third slide rail, 106 is a fourth slide rail, and 107 is a first plate. 4 slide block, 108 second plate, 109 transfer arm, 110 seventh block, 111 eighth block, 112 fifth pulley, 113 sixth pulley, 114 third timing belt, 115 cam follower Guide, 116 is a reduction gear, 117 is a motor, 118 is a motor plate, 119 is a coupling, 120 is an output shaft, 121 is a rotating arm, 122 is a cam follower, and 123 is a workpiece.
[0034]
In the present embodiment, the first moving means in the first embodiment is basically changed to a transfer arm means having a cam link mechanism. The hanging conduction device as the second moving means is the same as that in the first embodiment.
Hereinafter, the present embodiment will be described with reference to the drawings. Note that the description of the second moving means is omitted because it is the same as in the first embodiment.
[0035]
Referring to FIGS. 4 and 5, there is a pair of symmetrical side plates 102 which are fixed to the base 101 and are inverted and face each other with a third slide block 104 fixed to the upper part. An intermediate portion of the side plate 102 is provided with an output shaft 120 passed between the side plates 102, and a rotary arm 121 pivotally engaged with the output shaft 120 and having a cam follower 122 at the end.
As the first moving means, the rotary arm 121 is pivoted by an input shaft 120 via a motor 117, a coupling 119, and a speed reducer 116 attached to a motor plate 118 on the base 101.
[0036]
The pivoted rotary arm 121 forms a conversion device that changes the circular arc motion into a linear motion by the grooves provided in the cam follower 122 and the cam follower guide 115 at the ends thereof.
That is, the rotation arm 121 also rotates in the same direction by the right rotation of the arrow k1 of the output shaft 120 of the speed reducer 116. At this time, the cam follower 122 at the end of the rotary arm 121 follows the groove of the cam follower guide 115 to change the circular motion of the rotary arm 121 to linear motion, and the seventh block 110 to which the cam follower guide 115 is attached moves in the direction of the arrow k2. Pressed.
[0037]
As a result, the double slide rail 124 (integrated with the third slide rail 105 and the fourth slide rail 106 back to back) moves on the third slide block 104 in the right direction of the arrow A1. Similarly, the transfer arm 109 fixed to the fourth slide block 107 together with the double slide rail 124 as the second moving means also moves on the fourth slide rail 106 with the horizontal movement of the timing belt 114 in the arrow b1 direction. It moves in the direction of A1, and the slide mechanism is extended. Further, when the output shaft of the speed reducer is turned counterclockwise, the operation is the reverse of the above.
[0038]
As described above, the movement distance obtained by converting the input arc motion into the linear motion as in the first embodiment is doubled. That is, the moving distance (K) of the cam follower guide 115 × 2 = the moving distance (S1) of the double slide rail 124 + the moving distance (S2) of the fourth slide block 107 = the moving distance (M) of the transfer arm 109. As a result, the slide mechanism has a shorter overall length and is more compact than a conventional case in which the same movement distance is realized by one.
[0039]
Similarly to the first embodiment, the stroke value at the driving portion of the first moving means may be ½ of the required moving distance of the second moving means, and the integrated double slide rail 124 is used. Therefore, the height can be suppressed and the conveying device can be made compact. Furthermore, in the present embodiment, the first moving means is replaced with a transfer arm having a cam link mechanism, thereby securing a non-interference area occupied by the transfer arm moving, eliminating the need for maintenance of the roller chain. The repeatability of the loading arm stop position is ensured, the maintenance man-hours for maintaining the performance of the transfer arm can be greatly reduced, and the cost can be reduced.
[0040]
[Embodiment 4]
6 (A), (B), (C), and FIGS. 7 (A), (B) are explanatory diagrams for explaining Embodiment 4 of the present invention.
6A is a plan view, FIG. 6B is a side view, FIG. 6C is a cross-sectional view taken along line AA, and FIG. 7 is a second moving unit superposed in conjunction with the first moving unit in the present embodiment. FIG. 7A is a plan view, and FIG. 7B is a side view.
In the figure, 64 is a motor plate, 65 is a motor, 66 is a pinion gear, 67 is a rack gear, and 68 is a workpiece. In addition, the same code | symbol is attached | subjected to the component same as Embodiment 1, and description is abbreviate | omitted.
[0041]
In the fourth embodiment, basically, the ball screw transmission device in the first moving means of the first embodiment is fixed to the driving motor 65, the pinion gear 66, and the base 1 mounted on the first moving means to be moved. This is a combination with the rack gear 67, and has two double slide rails 22 which are linear motion guide bearings.
The present embodiment will be described below with reference to the drawings.
[0042]
Two double slide rails 22 in which the first slide rail 3 as the first linear motion guide bearing and the second slide rail 4 as the second linear motion guide bearing are coupled back to back are arranged in parallel, and at both ends thereof The first block 7 and the second block 8 for connection, which also serve to hold the first pulley 9 and the second pulley 10, are connected.
The first slide block 2 below the double slide rail 22 is fixed on the base 1, and the transport table 6 is attached to the upper second slide block 5.
[0043]
The timing belt 11 stretched between the first pulley 9 and the second pulley 10 starts from the center of the first slide block 2 so that the center of the second slide block 5 is positioned at a half of the length of the timing belt 11. Are fixed to the base 1 and the conveying table 6 by being sandwiched between the third block 12 and the fourth block 13 of the belt presser respectively.
A motor 65 having a pinion gear 66 fixed to the output shaft is attached to the motor plate 64 fixed to the first block 7, and a rack gear 67 that meshes with the pinion gear 66 is attached to the base 1.
[0044]
In FIG. 7, when the output shaft of the motor 65 fixed to the first block 7 rotates to the right as indicated by the arrow k1, the pinion gear 66 engages with the rack gear 67 fixed on the base 1 and moves to the right as indicated by the arrow r1. I will do it. At the same time, the two double slide rails 22 arranged in parallel with the second moving means are also pushed by the first block 7 and moved on the first slide block 2 in the right direction of the arrow A1.
As a result, the transfer table 6 fixed to the second slide block 5 together with the double slide rail 22 also moves on the second slide rail 4 in the direction of arrow A1 along with the horizontal movement of the timing belt 11 in the direction of arrow b1, The slide mechanism is extended. When the motor output shaft is rotated counterclockwise, the operation is the reverse of the above.
[0045]
As described above, according to the present embodiment, the amount of movement on the second moving means that is superimposed and interlocked with the amount of movement of the first moving means is doubled as in the first embodiment.
That is, the moving distance of the pinion gear 66 × 2 = the moving distance (S1) of the double slide rail 22 + the moving distance (S2) of the second slide block 5 = the moving distance (M) of the transfer table 6 on the second moving means side. The total length of the slide mechanism is shorter and more compact than the conventional case where the same movement distance is realized by a single slide rail. Further, since the first moving means has only to be moved by 1/2 of the stroke value required by the slide mechanism, the stroke value of the drive portion of the first moving means is also halved. Further, by mounting the motor 65 using the rack gear 67 and the pinion gear 66, a place for mounting the motor 65 on the base 1 becomes unnecessary, and simplification and compactness can be achieved. Furthermore, the height can be suppressed by the integrated double slide rail 22. According to the fourth embodiment, a double stroke value can be obtained without enlarging the outer size of the transfer device, which can contribute to the downsizing and cost reduction of the transfer device.
[0046]
[Embodiment 5]
8 (A), (B), (C), (D) and FIGS. 9 (A), (B) are explanatory diagrams for explaining the fifth embodiment of the present invention.
8A is a front view of the present embodiment, FIG. 8B is a plan view thereof, FIG. 8C is a side view, and FIG. 8D is a cross-sectional view along AA. FIG. 9 is an explanatory diagram showing a state in which the movement amount is superimposed by the second moving means in this embodiment, FIG. 9A is a plan view, and FIG. 9B is a side view.
[0047]
In the figure, 81 is a base block, 82 is a slide block a, 83 is a slide rail a, 84 is a slide rail b, 85 is a slide block b, 86 is a side plate, 87 is a transfer table, 88 is a motor plate, 89 is a block a and 90 are motors, 91 is a pulley a, 92 is a pulley b, 93 is a timing belt, 94 is a block b, 95 is a block c, and 96 is a workpiece.
[0048]
In the present embodiment, the driving motor 90 is basically mounted on the first moving means in the same manner as in the fourth embodiment, but the pulley 90 in the second moving means is directly rotated by the motor 90. Only the place to do is different.
Therefore, the configuration of the present embodiment is the same as that of the fourth embodiment except for the motor 90 coupling method, and the description thereof is omitted.
[0049]
In FIG. 9, when the output shaft of the motor 90 fixed to the motor plate 88 of the slide mechanism rotates clockwise, the timing belt 93 stretched between the pulley a91 and the pulley b92 starts from the center of the slide block a82. And horizontally through the pulley b92 in the direction of the arrow b1. At the same time, the double slide rail 97 (integrated slide rail a83 and slide rail b84 back to back) is also pushed by the motor plate 88 and moves on the slide block a82 in the right direction of the arrow A1.
As with the previous embodiments, the slide block b85 also moves in the same direction along with the movement of the timing belt 93 together with the double slide rail 97, and the present slide mechanism is extended. When the motor output shaft is rotated counterclockwise, the operation is the reverse of the above.
[0050]
As described above, according to the fifth embodiment, the motor 90 directly applies the rotational drive to the timing belt 93, whereby the double slide rail 97 and the slide block b85 are individually moved, and thus the above-described embodiment. Similarly, the moving distance (S1) of the double slide rail 97 + the moving distance (S2) of the slide block b85 = the moving distance (M) of the transfer table 87 is obtained.
Compared to the conventional case where the same moving distance is realized with only one slide rail, the total length of the slide mechanism is shortened, and the two slide rails a83 and b84 are joined together back to back. By adopting the double slide rail 97, the height can be suppressed, and further, the driving mechanism in the first moving means becomes unnecessary as compared with the previous embodiment, which contributes to the downsizing and cost reduction of the transport device. it can.
[0051]
As described above, in the first to fifth embodiments, the motor is used as the drive source. However, a hydraulic cylinder or the like can be used as the drive source. Further, as the hanging transmission device provided at both ends of the double slide rail, a transmission device using a roller chain and a rope can be used in addition to the timing belt. When a roller chain transmission device is used, it is rich in rigidity, and the slide mechanism can be used vertically, and can be used for a heavy load lifter or the like.
[0052]
【The invention's effect】
The slide mechanism of the present invention is on the first moving means that moves the conveyance table in a linear direction by self-running or other running with respect to the fixed base, and moves in conjunction with the movement of the first moving means, and By arranging on the second moving means on which the amount of movement is superimposed, and by making the slide rail an integral double slide rail constructed by joining the two upper and lower rails back to back, the outer shape of the transport device A double stroke value can be obtained without enlarging the size, which can contribute to the compactness and cost reduction of the transport device.
[0053]
In addition, the transport device of the present invention can provide an extremely compact transport device that is inexpensive and surely has a stretchability of 2 times or less by using the slide mechanism described above.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory diagram for explaining Embodiment 1 of the present invention, in which (A) is a front view, (B) is a plan view, (C) is a side view, and (D) is an AA line. It is sectional drawing.
FIGS. 2A and 2B are explanatory diagrams illustrating a state at the end of an operation according to the first embodiment of the present invention, where FIG. 2A is a plan view and FIG. 2B is a side view;
FIGS. 3A and 3B are explanatory diagrams for explaining Embodiment 2 of the present invention, in which FIG. 3A is a plan view and FIG. 3B is a side view.
FIGS. 4A and 4B are explanatory diagrams for explaining a third embodiment of the present invention, in which FIG. 4A is a front view and FIG. 4B is a side view.
FIG. 5 is an explanatory diagram for explaining a state at the end of an operation in Embodiment 3 of the present invention.
6A and 6B are explanatory views for explaining Embodiment 4 of the present invention, in which FIG. 6A is a plan view, FIG. 6B is a side view, and FIG.
7A and 7B are diagrams for explaining a state at the end of an operation according to Embodiment 4 of the present invention, where FIG. 7A is a plan view and FIG. 7B is a side view.
8A and 8B are explanatory views for explaining a fifth embodiment of the present invention, in which FIG. 8A is a front view, FIG. 8B is a plan view, FIG. 8C is a side view, and FIG. FIG.
FIGS. 9A and 9B are diagrams for explaining a state at the end of an operation in Embodiment 5 of the present invention, where FIG. 9A is a plan view and FIG. 9B is a side view;
10A and 10B are diagrams showing a conventional example, where FIG. 10A is a front view, FIG. 10B is a plan view, and FIG. 10C is a side view.
11A and 11B are diagrams showing another conventional example, in which FIG. 11A is a front view, and FIG. 11B is a side view.
FIG. 12 is a diagram illustrating another example of the prior art, and FIG. 12C is a diagram illustrating a state at the end of the operation.
[Explanation of symbols]
1 base, 2 first slide block, 3 first slide rail, 4 second slide rail, 5 second slide block, 6 transport table, 7 first block, 8 second block, 9 first pulley, 10 second pulley , 11 Timing belt, 14 Ball screw, 15 First support block, 16 Second support block, 17 Nut, 18 Motor, 39 Second timing belt, 66 pinion gear, 67 Rack gear, 68, 115 Cam follower guide, 121 Rotating arm, 122 Cam follower .

Claims (2)

Driven by a motor disposed at the middle position of the transfer range of the transfer table, and the transfer table is configured by connecting the upper and lower slide rails back to back in a linear direction by self-running or other running with respect to the fixed base. The second moving means is disposed on the first moving means that moves through the double slide rail, moves in conjunction with the movement of the first moving means, and is superimposed on the second moving means on which the moving amount is superimposed. In the slide mechanism
The first moving means is a rotating arm that pivots about a hinge fixed on a fixed base, a conversion device that converts a circular motion by a cam follower and a cam follower guide into a linear motion, and the second moving means is the other And a portion of the wall conduction member in the other wall conduction device is directly or indirectly fixed to the fixed base,
And a slide block that is directly or indirectly fixed to the fixed base and guides the first moving means, another slide block that is fixed to the transport table side, the slide block and the other slide block, and an upper portion and a lower portion thereof. A double slide rail configured by connecting back and forth upper and lower slide rails which are common guides of the slide block and the other slide blocks fitted together, and a transport table coupled to the hooking conductive member of the second moving means The second moving means moves in conjunction with the first moving means, and the movement amount of the transfer table is determined by the movement amount of the first moving means and the movement amount in the second moving means. Are superimposed,
The slide mechanism is characterized in that the amount of movement superimposed is not more than twice the amount of movement by the first moving means .   A transport apparatus using the slide mechanism according to claim 1.

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