JPH0144501B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing boxes using sheet-like members such as cardboard and plastic sheets.

When making a box using a sheet-like member, usually a pair of male and female cutting dies are created according to the shape and dimensions of the box, and the sheet-like member is cut using this die, and the folding line is is formed. Although the above method is suitable for mass production of boxes, it has a drawback in that it is not suitable for producing prototypes or small lot boxes because the molds are expensive to produce. Conventionally, when creating a prototype or small-lot box, an X-Y numerically controlled automatic cutting machine was used to cut the sheet material according to the shape of the box, and then the cutter was replaced with a pressing member. Then, the pressing member is controlled to move in the X-Y coordinate axis direction while being pressed against the sheet-like member, and as a result, the pressing member is pressed against one side of the sheet-like member 2 on the table 4 as shown in FIG. 7a. 6
A concave fold line 8 is formed by the pressing force. However, the thickness of this portion becomes thinner due to the recess at the portion where the folding line 8 is formed, so when the sheet-like member 2 is made into a box shape as shown in FIG.
The strength of this part was extremely weak, and stress was concentrated in that part, which easily cracked, making it impossible to produce a strong box.

An object of the present invention is to provide an apparatus for manufacturing boxes that eliminates the above-mentioned defects.

The structure of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 10 denotes the body of a head XY numerically controlled machine, which is equipped with a vacuum table 12. A large number of ventilation holes 14 are provided through the vacuum table 12, and a vacuum chamber 16 (see FIG. 2) is formed under the table 12. It is connected to the intake device via the air intake device. Both ends of a Y-coordinate rod 26 are movably mounted on X-coordinate rods 22 and 24 formed on the fuselage 10 via rollers, and
Both ends of the Y coordinate rod 26 are connected to both sides 2 of the fuselage 10.
It is fixed to an endless belt (not shown) rotatably disposed at 8 and 30. The endless belt rotates along both sides 28 and 30 of the body 10 by rotation of a pulse motor or servo motor MX (not shown), and the rotation of the belt causes the Y coordinate rod 26 to move along the X It moves along the coordinate rods 22 and 24. 32 is a Y cursor movably attached to the Y coordinate rod 26, and a pulse motor or servo motor MY (not shown) is installed in the casing of this Y cursor.
is built in, and a pinion gear fixed to the output shaft of the motor MY meshes with a rack gear fixedly installed along the Y coordinate rod 26. said motor MX,
MY is controlled by a controller connected to a computer, and by the rotation of the motors MX and MY, the Y cursor 32 is controlled to move in a predetermined direction on the vacuum table 12 within a plane parallel to it. . The X-Y numerical control mechanism for moving the Y cursor 32 along the X-Y coordinate plane is a well-known mechanism used in automatic drafting machines or automatic cutting machines, so detailed explanation thereof will be omitted. 34 is the Y cursor 32
The head is removably fixed to the head, and the structure inside the casing is shown in FIGS. 2 to 4.

In FIG. 2, reference numeral 36 is an elevating body, and a member fixed to the casing 38 moves the table 12 up and down.
Guide groove 4 formed in a direction perpendicular to the surface
0 and 42 so as to be slidable. The protrusion of the elevating body 36 is loosely fitted into a long hole 44 formed in a member 46 fixed to the casing 38. A tube body 48 is fixed to the upper part of the member 46, and a shaft body 50 is slidably fitted thereinto, and a threaded portion formed on the shaft body 50 connects the table 12 to the protrusion of the elevating body 36. It is screwed into a screw hole 52 formed in a direction perpendicular to the plane. The shaft body 50
The vertical surface of the large diameter portion of the tube body 48 comes into contact with the lower end surface of the thrust bearing 54 fitted in the large diameter portion of the tube body 48, and the lower end surface of the handle shaft 56 fixed to the shaft body 50 contacts the upper end surface of the tube body 48. It is rotatably in contact with the 58
is a frame fixed to the elevating body 36, and a bottom plate 60 is fixed to the lower end of this frame. Members 62 and 64 are fixed to the upper end surface of the frame 58, and a groove 66 having an L-shaped cross section is formed in the member 62 in a direction perpendicular to the plane of the paper. In the vertical wall surface forming the groove 66, a screw hole is opened through the member 62. Reference numeral 68 denotes a plate member fixed to the upper surface of the member 62 with screws, and a piece member 70 is provided between the lower surface of the member 68 and the bottom wall surface forming the groove 66.
are slidably fitted together, and a V-groove is formed in the direction perpendicular to the plane of the paper by the inclined surface formed on the piece member 70 and the bottom wall surface forming the groove 66. The member 64
A V-groove having the same shape as the above-mentioned V-groove is formed on the side surface. Reference numeral 72 designates a solenoid, and holding members 74 and 76 are fixed to the lower surface of the casing of the solenoid, and protrusions formed at the lower portions of the holding members 74 and 76 fit into the V-grooves. Reference numeral 78 is a handle shaft, and a threaded portion is formed at the tip of the handle shaft. Connect the threaded portion of the handle shaft 78 to the member 62.
screw into the screw hole of the frame member 70 at the tip of the threaded part.
to the right in the drawing to remove the holding members 74, 76.
The protrusion is fixed to the wall surface of the V-groove. 80
is the output shaft of the solenoid 72, and a cylindrical body is fixed to the upper end of the output shaft. 182 is the casing 38
The case is supported so that it can freely slide in the direction perpendicular to the plane of the paper. 84 is an external cylindrical body fixed to the upper part of the case 182, and the inner cylindrical body 8 is provided on the inner peripheral surface of the upper part of this.
The outer peripheral surfaces of 6 are slidably fitted together. Due to the elasticity of the coil spring disposed on the lower horizontal surface of the outer cylinder 84, the horizontal surface formed on the outer periphery of the inner cylinder 86 is resilient against the lower surface of the cap 88 that is screwed into the outer cylinder 84. are in contact with each other. A shaft member 90 is fixed to the upper part of the internal cylindrical body 86, and a disk-shaped lower end of the shaft member 90 faces the upper end of the output shaft 80 with an appropriate distance therebetween. A cylindrical body 82 is fixed to the lower end of the output shaft 80 with a screw. Reference numeral 92 denotes a cylindrical body that fits into a hole transparently provided in the bottom plate 60, and the cylindrical body 92 is fixed to the bottom plate 60. 94 is a cylindrical body that is slidably fitted to the inner peripheral surface of the cylindrical body 92, and on the upper surface of the cylindrical body 94,
Due to the elastic force of the coil spring 96, the cap 100 is brought into elastic contact with the lower surface of the cap 100, which is screwed into the cylindrical body 92. Reference numeral 102 designates a tubular body, and a lifting shaft 104 is rotatably attached to the inner peripheral surface of the tubular body via a pair of thrust bearings. Due to the tightening force of the nut 106 screwed into the threaded portion of the lifting shaft 104, the fitted washer of the lifting shaft 104 is pressed against the upper surface of the upper thrust bearing, and the annular horizontal surface on the outer circumference of the lifting shaft 104 is pressed. is crimped to the bottom surface of the lower thrust bearing. The lower end surface of the tubular body 102 contacts the upper surface of the tubular body 94, and the tubular body 108 is fixed to the upper part of the tubular body 102 with a screw. The cylindrical body 8 is disposed on the upper horizontal surface of the cylindrical body 108.
The lower end surfaces of 2 are in contact with each other. The upper small diameter portion of the lifting shaft 104 is loosely fitted into the cylinders 82 and 108, and a knob 110 is fixed to the upper small diameter portion. Reference numeral 112 denotes a hollow mounting body consisting of a pair of horizontal substrates 114 and 116 disposed at the bottom of the casing 38 and a pair of side walls.
One side wall portion of 12 is fixed to the member 46 with a screw. An outer tube 118 is loosely fitted into the holes formed in the substrates 114 and 116, and a gear 120 is fixed to the outer peripheral surface of the outer tube 118. Reference numeral 122 designates a tubular body fixed to the base plate 116 with screws, the outer ring of a radial ball bearing 124 fits into the inner circumferential surface of this tube, and the outer circumferential surface of the outer tube 118 fits into the inner circumferential surface of the bearing 124. are mated. The inner ring of the bearing 124 is connected to the outer pipe 1.
The inner ring of the bearing 124 is fixed to the outer tube 118 by being compressed by a nut 126 screwed into the lower part of the bearing 18 and a collar 128 slidably fitted onto the outer peripheral surface of the outer tube 118. 130 is the substrate 11
The outer ring of the radial ball bearing 132 fits into the inner circumferential surface of this tube, and the outer circumferential surface of the outer tube 118 fits into the inner circumferential surface of the bearing 132. ing. The inner ring of the bearing 132 is clamped between the nut and the annular horizontal surface of the outer circumference of the outer tube 118 by the tightening force of the nut screwed onto the outer tube 118, so that the inner ring of the bearing 132 It is fixed to the outer tube 118. Reference numeral 134 denotes an annular metal member that is slidably fitted to the inner circumferential surface of the outer tube 118, and the upper end surface of the annular metal member 134 is screwed into a thread formed on the inner circumferential surface of the lower end of the outer tube 118. The tightening force of the outer tube 118
It is in pressure contact with an annular horizontal surface formed on the inner peripheral surface. Reference numeral 138 denotes a tube body fixed to the upper part of the outer tube 118 with a screw, and the large diameter portion of the lift shaft 104 is loosely fitted into the inner peripheral surface of this tube body. Said tube body 1
A vertical groove 140 is bored in 38, and the vertical groove 140 is inserted into the vertical groove 140.
A protruding pin 142 of 04 is slidably fitted. The outer peripheral surface of the large diameter portion of the lifting shaft 104 is slidably fitted into the inner peripheral surface of the metal 134. A tool mounting plane is formed at the lower part of the lifting shaft 104, and a screw hole for mounting is opened in the plane. 104' is a lifting shaft, which is similar to the lifting shaft 1.
It is supported by the casing 38 with the same configuration as that described in 04. Reference numeral 144 denotes a holder plate, which is detachably fixed to the mounting plane of the elevating shaft 104 with screws. The holder plate 1
A disc-shaped pressing member 146 is rotatably supported at the lower part of the shaft 44 . Reference numeral 148 denotes a knife, which is connected to the lifting shaft 104' by a screw together with the mounting plate 150.
is removably fixed to the mounting plane of the 152
154 is a detector fixed to the substrate 114, and 154 is a tongue piece fixed to the outer tube 118'.
When the through hole formed in the detector 152 reaches a predetermined position, the detector 152 outputs a through hole detection signal, and the detector 152 and the tongue piece 154 detect the origin of the outer tube 118'. constitutes a means. The detector 152 is connected to a controller.

In FIG. 3, 156 is a direction control servo motor fixed to the board 116, and a gear 158 is fixed to the output shaft of this servo motor, and the gear 158 is rotatably supported between the boards 114 and 116. Gears 160 are in mesh. 161 is the gear 160
is an intermediate gear fixed to the shaft of the intermediate gear 1.
61 meshes with the gear 120 and the gear 120'.

An input shaft of a tachometer generator (not shown) is connected to the output shaft of the motor 156.
is configured to feed back a speed signal to the controller. 162 is an encoder that converts the rotation of the output shaft of the motor 156 into a pulse signal, and a gear fixed to this input shaft meshes with the gear 158 via an intermediate gear. The encoder 162 is for feeding back the amount of rotation of the motor 156 to the controller.

Next, the operation of this embodiment will be explained.

In advance, pattern information of a developed view of a box to be manufactured and a tool control signal are input into an input medium for a computer, such as a paper tape, by means of punching or the like, thereby preparing an input medium for box manufacturing. In addition, pattern information of folding lines and tool control signals in the developed view of the box to be manufactured are inputted into an input medium for a computer, and an input medium for creating a female mold is prepared.

Next, an air-permeable female mold sheet 168, which is a material for the female mold, is placed on the vacuum table 12,
The intake device is driven to fix the female mold sheet 168 to the table 12 surface by intake air. Next, an input medium for making a female mold is set in the input section of the computer, the computer drives a controller, and the controller drives and controls the X-Y head numerical control device. By command of the controller, the head 34
moves in a plane parallel to the surface of the table 12 along the pattern of the fold lines in the box development view. On the other hand, the blade 148 moves up and down with respect to the table 12, and the direction of rotation of the blade 148 is controlled so that the side surface of the blade always faces the direction of travel. As a result, the sheet 168 has parallel cutting lines 170, 1 with a predetermined width at the portion corresponding to the folding line in the developed view of the box to be manufactured, as shown in FIG.
72 is formed. Next, cut line 1 of sheet 168
Place your hand on table 12 in the area surrounded by 70 and 172.
Remove from above. As a result, a thick line-shaped notch strip 174 is formed on the sheet 168 at a portion corresponding to the fold line of the developed view of the box to be manufactured.

Next, a sheet-like member 176 of cardboard, plastic, etc., which will be the material of the box to be manufactured, is placed on the female mold sheet 16.
8, and the sheet-like member 176 is fixed to the surface of the table 12 by suction force.

Next, set the input medium for box production into the input section of the computer. Next, the controller drives the X-Y head numerical control device to move the head 34 to table 1.
In a plane parallel to the two surfaces, the female mold sheet 16
The fold line 178 protruding downward is formed on the sheet-like member 176 by controlling the movement along the notch line 174 of No. 8 and by controlling the pressing member 146 to move up and down. When the pressing member 146 descends directly above the notched strip 174 of the female mold sheet 168 and with the side surface of the pressing member 146 parallel to the longitudinal direction of the notched strip 174, the pressing member 146 presses the sheet-like member 176 to a predetermined depth. The surface of the sheet-like member 176 is recessed by the amount of the recess, and the back surface thereof protrudes into the cutout strip 174 of the female sheet 168, as shown in FIG. 6a. In this state, the pressing member 146 moves along the notched line 174 of the female sheet 168. At this time, the pressing member 146 is rotationally controlled so that its side surface is always parallel to the traveling direction. As the pressing member 146 moves along the notch line 174, a fold line 178 is formed on the sheet-like member 176, with the back surface protruding by the amount that the front surface is recessed, and whose thickness width is almost the same as the other portions. Ru.
Next, with the pressing member 146 held in the raised position, the head 34 moves along the outline 180 of the box's developed view, while the cutter 148 is controlled up and down, and the sheet-like member 176 moves A portion corresponding to the outline line 180 in the figure is cut. It is cut along the outline 180 of the exploded view of the box, and
After the sheet-like member 176 with a fold line 178 formed in a portion corresponding to the fold of the box is removed from the vacuum table 12, it is manually bent and joined into a box shape.

Next, the direction control operation of the pressing member 146 will be explained.

The XY motor drive signals supplied from the output section of the controller to the motors MX and MY are vector-combined by a device (not shown), converted into a signal suitable for driving a servo motor, and this signal is supplied to the servo motor 156. be done. When the output shaft of the servo motor 156 rotates, this rotation is caused by the gears 158,1
60, 120 and is transmitted to the outer tube 118. The rotation of the outer tube 118 is controlled by the lifting shaft 10 via the pin 142.
4, the elevating shaft 104 rotates, and the rotation of the elevating shaft 104 causes the pressing member 146 to have its side surface always parallel to the traveling direction of the head 34. Similarly, the side surface of the blade 148 is
The rotation is controlled so that it is always parallel to the traveling direction of the head 34.

Next, the up-down control operation of the pressing member 146 will be explained.

When the solenoid 72 is excited by a signal from the controller, its output shaft 80 is lowered by a predetermined amount.

When the output shaft 80 descends, the cylindrical body 108, the tubular body 102, and the cylindrical body 94 descend against the elasticity of the coil spring 96 in conjunction with this. As the tubular body 102 descends, the elevating shaft 104 descends along the vertical groove 140.
The lower end of the pressing member 146 is pressed against the sheet-like member 176. The height level of the lower end of the pressing member 146 relative to the vacuum table 12 when the pressing member 146 is lowered is adjusted by rotating the handle shaft 56. As the handle shaft 56 rotates, the elevating body 36 moves up and down along the guide grooves 40 and 42, and the base plate 60 and the solenoid 7 interlocked therewith move up and down.
2 moves up and down.

When the shaft 90 is pushed down by hand to project the output shaft 80 of the solenoid 72 to the lower limit position, and in this state, for example, the board 60 and the solenoid 72 are lowered, the elevating shaft 104 is moved in conjunction with the lowering of the cylindrical body 92. is lowered along the vertical groove 140, and the pressing member 146 is lowered toward the vacuum table 12. When the handle shaft 56 is reversely rotated and the elevating body 36 is raised, the board 60 and the solenoid 72 are raised, and the elevating shaft 104
is raised relative to the outer tube 118, and the pressing member 146 is raised relative to the vacuum table 12. As described above, by rotating the handle shaft 56, the lower end level of the pressing member 144 at the lowest point can be set to a desired height, and this level is set by lowering the shaft 90 and outputting the solenoid 72. This can be confirmed by protruding the shaft 80 to the lower limit position. Adjustment of the lower end level of the cutter 148 at the lowest point and confirmation of the level can be performed in the same manner as above by raising and lowering a separately provided elevating body (not shown) and lowering the shaft (not shown). Can be done.

As is clear from the above description, the solenoid 72, the cylindrical body 108, the cylindrical body 94, the coil spring 96, and the lifting shaft 104 are connected to the pressing member 146.
constituting a first driving means for driving the vacuum table 12 into two states of raising and lowering,
In FIG. 2, on the right side of the above structure, there is a structure (partially not shown) that is the same as the above structure, and is a second structure that drives the cutter 148 in two states, upward and downward, with respect to the surface of the vacuum table 12. It constitutes a driving means.

Incidentally, by gently rotating the handle shaft 78, the holding member 74,
76 along the V-groove, and move the lower part of the vertical axis 104
By moving the solenoid 72 along with the case 182 in the direction perpendicular to the plane of the drawing, the lifting shaft 104 can be pulled out using the knob 110, and the pressing member 14 can be pulled out by holding the knob 110.
6 can be easily replaced. Lifting axis 10
The same applies to the case of 4'.

In addition, the elevating body 36, the shaft body 50, and the handle shaft 5
6, frame body 58, bottom plate 60, shaft member 90, solenoid 72, cylinder body 82, cylinder body 108, tube body 102, tube body 94, coil spring 96, outer tube 118, vertical groove 140, pin 142, and lifting shaft 104 is the lowermost position of the pressing member 146 on the vacuum table 12.
A mechanism for finely adjusting the height of the pressing member in the direction of raising and lowering the blade, and a mechanism provided on the blade 148 side with the same structure as above, adjusts the lowermost position of the blade 148. It constitutes a blade height adjustment mechanism for finely adjusting the height of the blade in the direction of raising and lowering relative to the user table 12. Note that the first and second driving means, the pressing member, and the blade height adjustment mechanism can have various structures other than the structure shown in the drawings, and are not particularly limited to the structure shown in the drawings.

The lower end level of the cutter 148 when lowered to the lowest level is set to be the same as or slightly lower than the upper surface of the female die sheet 168. The lower end level of the pressing member 146 at the lowest point is set at an intermediate position between the upper surface of the sheet-like member 176 and the upper surface of the female sheet 168, as shown in FIG. 6a.

As described above, in the present invention, the head of the head X-Y numerical control device is provided with a cutter and a pressing member, and the cutter and the pressing member can be individually controlled up and down. is fixed, and a cutter is used to cut the sheet at a portion corresponding to the folded part of the developed view of the box to be manufactured to form a cutout strip of a predetermined width on the sheet, and the sheet is used as a female mold for box manufacturing. A sheet-like member that will be the material for the box is placed and fixed on top of this female mold, and a pressing member presses the sheet-like member along the notch line of the female mold.
It is possible to perform the work of forming folding lines protruding in the downward direction on the sheet-like member, and the work of cutting the sheet-like member with a knife along the outline of the developed view of the box, using a cutting die. It is possible to create a box with strong folding line parts without any problems, and the height of the cutter and the pressing member at the lowest point can be adjusted separately, so if the usage conditions of this device are a certain thickness. The present invention has the advantage that it is not limited to female-type sheets and box-type sheets, and can be applied to sheets of various thicknesses.

[Brief explanation of drawings]

Fig. 1 is an overall external view, Fig. 2 is a sectional view, Fig. 3 is a plan view, Fig. 4 is a plan sectional view, Fig. 5 is a plan view of the female sheet, and Fig. 6 is an explanatory sectional view. , FIG. 7 is an explanatory diagram of the prior art. 12...Vacuum table, 34...Head, 36...Elevating body, 46...Member, 48...Pipe body, 50...Shaft body, 56...Handle shaft, 72...
... Solenoid, 82 ... Cylinder, 84 ... External cylinder, 86 ... Internal cylinder, 96 ... Coil spring, 104 ... Lifting shaft, 146 ... Pressing member, 1
48...Knife, 168...Female sheet, 174...
... Notch strip, 178 ... Fold line, 176 ... Sheet-like member.

Claims (1)

[Claims] 1. A vacuum table 12 that fixes a sheet-like member by intake air, and a vacuum table 12 in a predetermined direction relative to the vacuum table 12 within a plane parallel to the surface of the vacuum table 12. A head 34 is supported in a numerically controllable manner, and a head 34 is provided on the head 34 so as to be movable up and down with respect to the surface of the vacuum table 12, for cutting the female mold sheet and the sheet-like member that will be the material for the box. cutlery 14
8, and a vacuum table 12 on the head 34.
Pressing member 146 provided to be able to move up and down with respect to the surface
, a first driving means provided on the head 34 for driving the pressing member 146 into two states of raising and lowering with respect to the surface of the vacuum table 12; and a first driving means provided on the head 34 and driving the pressing member 146 in two states of raising and lowering with respect to the surface of the vacuum table 12; 14
a second driving means for driving the vacuum table 8 into two states of raising and lowering with respect to the surface of the vacuum table 12;
A cutter height adjustment mechanism provided on the head 34 for finely adjusting the lowest position of the cutter 148 in the direction of raising and lowering with respect to the vacuum table 12; and a presser provided on the head 34. A box manufacturing apparatus comprising a pressing member height adjustment mechanism for finely adjusting the lowest position of the member 146 in the direction of raising and lowering the member 146 with respect to the vacuum table 12.