JP2002143955A - Workpiece carrier for press die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work carrier which can carry a workpiece by various kinds of stroke length. SOLUTION: When the carrying pitch is a regular one 2P, the carrier is selected by a selection device so as to be operated by a cam plate 43A. When a drive shaft 41 is rotated by driving a motor via a first conversion mechanism 40, an interlocking shaft 42 is rotated and an eccentric cam plate 43A is pressed against a roller to largely oscillate the selection device and an oscillation piece 60 with a supporting shaft as a fulcrum. Since a third connection bar 67 is oscillated by a predetermined angle together with a fixed supporting shaft via first and second connection bars 62 and 64, a movable hitch is moved by the regular pitch 2P as the third connection bar 67 is oscillated via a link body. As the movable hitch is moved, a locking claw of a fixed hitch is lowered against a spring, and a workpiece 34 is moved by the regular pitch 2P by the feeding action of the locking claw of the movable hitch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press die apparatus for processing a workpiece, comprising a vertically movable slider provided with an upper die, and a bolster provided with a lower die. The present invention relates to a device for transporting a workpiece.

[0002]

2. Description of the Related Art A conventional press die apparatus of this kind is described below.
This will be described with reference to FIGS. 1 is a bolster,
A lower die set 3 including a lower die 2 of a first stage to a fourth stage, for example, is provided above the lower die set 3.
Reference numeral 4 denotes a workpiece, which is transported from left to right in FIG. 14 at a predetermined pitch by a transport device described below along a guide (not shown).

[0005] Reference numeral 5 denotes a slider, and an upper die set 7 having an upper die 6 of, for example, a first stage to a fourth stage is provided below the slider. Therefore, when the slider 5 is lowered by the motor, the workpiece 4 is subjected to predetermined processing from the first stage to the fourth stage by the upper die 6 and the lower die 2.

A hitting arm 8 has a left end fixed and a pressing portion 9 provided on the lower surface of the right end. A guide 10 guides the workpiece 4 and presses the pressing portion 9.
Accordingly, the cutter 11 pressed when it is at the first position is also guided so as to be vertically movable. Therefore, when the slider 5 is lowered by the motor when the cutter 11 is at the first position, the pressing portion 9 lowers the cutter 11 to cut the workpiece 4.

[0005] The transfer device is shown in Figs.
As shown in FIG. 8, generally, at most two types of strokes can be conveyed. That is, the cam plate 20 is rotated by a motor (not shown), and one end of the transmission member 21 is rotatably supported at a position eccentric to the cam plate 20 and the other end is fixed to the swinging piece 22. Cylinder 23
The swinging piece 22 is swung within a certain range with the supporting shaft 24 as a fulcrum together with the support shaft 24 because the swinging piece 22 is rotatably supported. The workpiece 4 is transported at a predetermined pitch by a feed claw (not shown) that engages with the workpiece 4. When it is desired to change the feed amount of the workpiece 4, it can be achieved by operating the cylinder 23 as shown in FIG.

[0006]

However, in this case, there is a problem that only two types of strokes can be transported: a normal stroke when the cylinder 23 is not operated, and a half stroke of the normal stroke when the cylinder 23 is operated. there were.

[0007] In view of the above, an object of the present invention is to enable a workpiece to be conveyed that can have various stroke lengths without being limited to such a fixed stroke length.

[0008]

Means for Solving the Problems For this reason, the first invention provides
A press die apparatus for processing a workpiece is provided with a vertically movable slider provided with an upper mold, and a bolster provided with a lower mold, and is rotated by a motor. A plurality of eccentric cams having different diameters, a selecting device for selecting an arbitrary eccentric cam to obtain a predetermined conveying stroke among the plurality of eccentric cams, and a swinging motion of the eccentric cam selected by the selecting device. A swinging body, a moving body that reciprocates with the swinging movement of the swinging body, and a claw provided on the moving body for locking the workpiece and transporting the workpiece by a predetermined transport stroke. Characterized by comprising:

According to a second aspect of the present invention, the movable body reciprocating with the swing of the swing body is connected to the swing body by a rotatable connection, and is connected to the connection body via a link body. And a moving hitch that moves horizontally.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, in FIG. 1, reference numeral 31 denotes a bolster of a press die apparatus 30, and a lower die set 33 having, for example, a lower die 32 of a first stage to a seventh stage is provided on an upper portion thereof. Reference numeral 34 denotes a substantially flat workpiece made of, for example, aluminum, which is conveyed along a guide by a predetermined pitch from left to right in FIG. 1 along a guide.

Reference numeral 35 denotes a slider. Below the slider, an upper die set 37 having an upper die 36 of, for example, a first stage to a seventh stage is provided. Therefore, when the slider 35 is lowered by a motor (not shown),
The workpiece 34 is subjected to predetermined processing by the upper die 36 and the lower die 32 of the first to seventh stages. That is, various processes are sequentially performed by the upper mold 36 and the lower mold 32 from the first stage to the seventh stage.

A first conversion mechanism 40 is fixed on the front surface of the press mold device 30. When a motor (not shown) for moving the slider 35 up and down is driven, the drive shaft is driven via the first conversion mechanism 40. 41 rotates, and the interlocking shaft 42 rotates via a second conversion mechanism (not shown). For example, the drive shaft 41 and the interlocking shaft 42 are provided with meshing bevel gears, respectively. When the drive shaft 41 rotates around the vertical direction, the interlocking shaft 42 rotates around the horizontal direction via both bevel gears. I do. For this reason, the cam plates 43A and 43B having different diameters rotate with the rotation of the interlocking shaft 42 at the eccentric position.

Reference numeral 44 denotes a selection device, which is a cam plate 43A,
3B is selected and operated, and as a result, the transport stroke length is selected, which will be described in detail below. At the upper end of the box 45, a U-shaped fixed body 47 that rotatably supports a roller 46B that can be pressed against the cam plate 43B is fixed at an intermediate portion, and can be moved up and down at a position behind the fixed body 47. A moving body 4 rotatably supporting a roller 46A capable of being pressed against the cam plate 43A at an intermediate upper end.
8 is provided.

That is, the movable body 48 is provided in the box 45 having a partially open upper surface so as to be movable upward and downward while being urged upward by a spring 49, and is fixed to an outer surface of the box 45. 50 is actuated and the rod 51 is moved
8, when the interlocking shaft 42 rotates, the cam plate 43A comes into pressure contact with the roller 46A to greatly swing the selector 44 (see FIGS. 6 and 7). When the interlocking shaft 42 rotates in a state where the rod 51 does not enter the locking groove 52 of the moving body 48 without the cylinder 50 being operated, the cam plate 43A is pressed against the roller 46A provided at the upper end of the moving body 48. Then, the moving body 48 is lowered against the spring 49, and the cam plate 43B is pressed against the roller 46B to swing the selecting device 44 slightly (see FIGS. 8 and 9). Therefore, depending on whether the cylinder 50 is operated or not, one of the cam plates 43A and 43B is selected and operated, and as a result, the transport stroke length is selected.

In FIG. 10, reference numeral 60 denotes the selecting device 44.
Is a generally U-shaped rocking piece to which the cam plate 4 is fixed.
The pivotal movement is made about the support shaft 61 as a fulcrum by the rotation of one of 3A and 43B. One end 62 is supported on the swinging piece 60 by a support shaft 63.
A first connecting rod rotatably connected via
The connecting rod 64 is rotatably connected to the connecting rod 64 via a support shaft 65. The second connection rod 64 is rotatable together with the fixed support shaft 66, and the fixed support shaft 6 is rotated by the swing of the second connection rod 64.
A third connecting rod 67 is fixed to 6.

In FIG. 11, reference numeral 70 denotes the third connecting rod 6;
7, a collar rotatably attached to the upper end, and is connected to a link body 73 together with a collar 72 rotatably attached to one end of a moving hitch 71 described later. That is, the screws 74 are fixed with the upper and lower links 73A, 73B sandwiching the collars 70, 72 with play. Therefore, when the third connecting rod 67 swings, the movable hitch 7 moves along a guide shaft 76 fixed to a guide block 75 attached to the bolster 31 via a link body 73.
1 will move horizontally.

In FIG. 13, reference numeral 80 denotes the bolster 31.
And a locking claw 81 is provided in the same manner as the moving hitch 71. That is, since both have the same structure, the locking claw 81 of the moving hitch 71 will be described for convenience. A spring 82 is stored in a storage space formed in the moving hitch 71, and the locking claw 81 is urged upward by the spring 82. When the workpiece 34 is fed, the locking claw 81 is locked in the hole 34A of the workpiece 34. When the workpiece 34 is returned, the locking claw 81 has an inclined surface. The work 34 slides on the lower surface.

A plurality of locking claws 81 and the like provided on the fixed hitch 80 and the movable hitch 71 are provided respectively, but are provided at the same intervals as the holes 34A formed in the workpiece 34. Things.

The operation of the above configuration will be described below. With the slider 35 raised, the workpiece 34 is moved along the guide by the transfer device along the guide shown in FIG.
Are transported from left to right by a predetermined normal pitch. When the slider 35 is lowered by a motor (not shown), a predetermined process is performed on the workpiece 34 by the upper mold 36 and the lower mold 32 from the first stage to the seventh stage. After this processing, the slider 35 is raised, the workpiece 34 is conveyed again by a predetermined normal pitch, and the slider 35 is lowered and processed as described above. And finish the processing.

Here, the operation of transporting the workpiece 34 will be described in detail below. First, when the conveyance pitch is the normal pitch 2P, the selection device 44 is selected to operate by the cam plate 43A. That is, the cylinder 50 fixed to the outer side surface of the box 45 is operated, and the rod 51 is inserted into the locking groove 52 of the moving body 48 to be selected (see FIG. 4).

When the motor for raising and lowering the slider 35 is driven, the drive shaft 41 is rotated via the first conversion mechanism 40, and the interlocking shaft 42 is driven via the meshing bevel gears (not shown). Roller 46 when rotated
The cam plate 43A, which is eccentric to A, presses and largely swings the selecting device 44 and the swinging piece 60 around the support shaft 61 (see FIGS. 6, 7 and 10).

Then, the first connecting rod 62 and the second connecting rod 6
4, the third connecting rod 67 swings by a predetermined angle together with the fixed support shaft 66. For this reason, as shown in FIGS. 11 and 12, the collar 70 at the upper end of the third connecting rod 67 and the collar 72 at the end of the movable hitch 71 are connected by the link body 73, so that the third connecting rod 67 swings. With the movement, the moving hitch 71 moves by the normal pitch 2P.

Therefore, as shown in FIG. 13, before the transfer, the locking claw 81 of the fixed hitch 80 and the locking claw 81 of the moving hitch 71 are fitted in the hole 34A of the workpiece 34. With the movement, the locking claw 8 of the fixed hitch 80
1 moves down against the spring 82, and the workpiece 34 is moved at the normal pitch 2 by the feeding operation of the locking claw 81 of the moving hitch 71.
Move by P.

When the rotation of the drive shaft 41 causes the cam plate 43A to rotate 180 degrees, in other words, when the roller 46A and the press-contact portion pass the longest diameter portion of the cam plate 43A, the third connecting rod 67 swings in the opposite direction, the moving hitch 71 also returns, the locking claw 81 of the fixed hitch 80 locks in the hole 34A, and the locking claw 81 of the moving hitch 71 descends, and The locking claw 81 at 71 moves back by a normal pitch of 2P, fits into the hole 34A and stops.

Thereafter, the slider 35 is lowered by a motor (not shown), and the workpiece 34 is subjected to predetermined processing from the first stage to the seventh stage by the upper die 36 and the lower die 32. After this processing, the first conversion mechanism 40 is driven again, and as described above, the operation of transporting the workpiece 34 by the normal pitch 2P is repeated.

Here, the workpiece 34 is placed at a normal pitch 2P.
The case where the sheet is conveyed by a half pitch P is described below. In this case, first, the selection device 44 is selected so as to operate by the cam plate 43B. That is, the cylinder 5
0 is actuated to pull the rod 51 and escape from the locking groove 52 of the moving body 48, thereby selecting the rod 51 (see FIG. 5).

When the motor is driven, the drive shaft 41 rotates through the first conversion mechanism 40, and the interlocking shaft 42 rotates through the meshing bevel gears (not shown). Moves downward in the box 45 against the spring 49 by the cam plate 43A, but the eccentric cam plate 43B is pressed against the roller 46B provided on the fixed body 47, and the selector device 44 and the swinging piece 60 are small. The support shaft 61 is swung with the support shaft 61 as a fulcrum (refer to FIGS. 8, 9, and 10).

Then, the first connecting rod 62 and the second connecting rod 6
4, the third connecting rod 67 swings by a predetermined angle together with the fixed support shaft 66. 11 and 12, the collar 70 at the upper end of the third connecting rod 67 and the collar 72 at the end of the moving hitch 71 are connected by the link body 73. With the swing, the moving hitch 71 moves by a pitch P which is half the normal pitch 2P.

Therefore, before the transfer, the locking claw 81 of the fixed hitch 80 and the locking claw 81 of the moving hitch 71 are fitted in the hole 34A of the workpiece 34. The locking claw 81 of 80 moves down against the spring 82, and the workpiece 34 moves by a pitch P which is half of the normal pitch 2P by the feeding operation of the locking claw 81 of the moving hitch 71.

When the rotation of the drive shaft 41 causes the cam plate 43B to rotate by 180 degrees, in other words, when the roller 46B comes into contact with the roller 46B past the longest diameter portion of the cam plate 43B, the third connecting rod 67 swings in the opposite direction, the moving hitch 71 also returns, the locking claw 81 of the fixed hitch 80 locks in the hole 34A, and the locking claw 81 of the moving hitch 71 descends, and The locking claw 81 moves back by a pitch P, which is half the normal pitch 2P, and
4A fits and stops.

Thereafter, the slider 35 is lowered by a motor (not shown), and the workpiece 34 is subjected to predetermined processing from the first stage to the seventh stage by the upper die 36 and the lower die 32 of the seventh stage. After this processing, the first conversion mechanism 40 is driven again, and as described above, the operation of transporting the workpiece 34 by a pitch P which is a half of the normal pitch 2P is repeated.

Although the embodiment in which two types of cam plates 43A and 43B are provided has been described, the present invention is not limited to this, and three or more types of cam plates may be provided, whereby various transport stroke lengths can be selected. It is possible.

Although the embodiments of the present invention have been described above, various alternatives, modifications or variations are possible for those skilled in the art based on the above description, and the present invention is not limited to the above-described various embodiments without departing from the spirit thereof. It is intended to cover alternatives, modifications or variations.

[0034]

As described above, according to the present invention, it is possible to convey a work piece having various stroke lengths.

[Brief description of the drawings]

FIG. 1 is a front view of a press die apparatus.

FIG. 2 is a left side view illustrating a relationship between a cam plate and a selection device.

FIG. 3 is a front view showing a relationship between a cam plate and a selection device.

FIG. 4 is a longitudinal sectional view of a selection device when a cam plate 43A is selected.

FIG. 5 is a longitudinal sectional view of a selection device when a cam plate 43B is selected.

FIG. 6 is a left side view showing the relationship between the cam plate and the selection device when the cam plate 43A is selected.

FIG. 7 is a front view showing the relationship between the cam plate and the selection device when the cam plate 43A is selected.

FIG. 8 is a left side view showing the relationship between the cam plate and the selection device when the cam plate 43B is selected.

FIG. 9 is a front view showing the relationship between the cam plate and the selection device when the cam plate 43B is selected.

FIG. 10 is a front view showing a relationship between a cam plate, a rocking piece, and each connecting rod.

FIG. 11 is a perspective view showing a relationship between a third connecting rod, a moving hitch, and a link body.

FIG. 12 is a plan view of a main part of the transfer device showing a transfer operation for a normal stroke 2P.

FIG. 13 is a vertical cross-sectional view of a main part of the transfer device showing a transfer operation for a normal stroke 2P.

FIG. 14 is a front view of a conventional press die apparatus.

FIG. 15 is a perspective view of a conventional press die apparatus.

FIG. 16 is a front view of a main part of a conventional transport device.

FIG. 17 is a front view of a main part in a state where a conventional transport device is operated.

FIG. 18 is a front view of a main part of a conventional transport device.

[Explanation of symbols]

 Reference Signs List 30 press die apparatus 31 bolster 32 lower die 34 workpiece 35 slider 36 upper die 43A, 43B cam plate 44 selecting device 50 cylinder 60 rocking piece 71 moving hitch 73 link body 80 fixed hitch 81 locking claw 82 spring

Claims (2)

[Claims] 1. A press die apparatus for processing a workpiece, comprising: a vertically movable slider provided with an upper mold; and a bolster provided with a lower mold. , A plurality of eccentric cams having different diameters rotated by a motor, a selecting device for selecting an arbitrary eccentric cam to obtain a predetermined conveying stroke among the plurality of eccentric cams, and an eccentric cam selected by the selecting device A swinging body that swings by rotation of the swinging body, a moving body that reciprocates in accordance with the swinging movement of the swinging body, and a workpiece that is provided on the moving body and that is locked to the workpiece and transports the workpiece by a predetermined transport stroke. A workpiece conveying device for a press die device, comprising: 2. A moving body that reciprocates in accordance with the swinging movement of the rocking body, includes a connecting body rotatably connected to the rocking body, and a horizontally moving movement connected to the connecting body via a link body. 2. The workpiece transfer device for a press die device according to claim 1, wherein the device comprises a hitch.