JP5004578B2 - Holding jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To press a fixed member to a base side by a pawl part by advancing a movable piece only by the operation of a lever part and rocking the movable piece as it is, and to facilitate fastening work. <P>SOLUTION: The pressing jig is provided with the movable piece 7 having the pawl part 17 pressing a molding die W to the base 5 side on an advancing direction end part, a screw part 9 for rocking the movable piece 7, the lever part 11 having an end connected to the screw part 9 and having an intermediate part to which a bearing 35 is disposed, a first guide part 13 arranged between the screw part 9 and the bearing 35 in the advancing and retreating direction of the movable piece 7 and retreating the movable piece 7 through the screw part 9 by abutting and guiding the bearing 35 by rotating and operating the lever part 11 from the screw neutral position to the screw retreating position of the screw part 9 in the counter-screwing direction, and a second guide part 15 arranged to confront the first guide part 13 in the advancing and retreating direction of the movable piece 7 while having the bearing 35 between them and advancing the movable piece 7 through the screw part 9 by abutting and guiding the bearing 35 by rotating and operating the lever part 11 from the screw retreating position to the screw neutral position of the screw part 9 in the screwing direction. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

The present invention relates to a pressing jig for clamping a molding die, a press die or the like for injection molding a resin product.

  Conventionally, there exists a thing as described in patent document 1 as a holding jig.

  This holding jig is a mold clamping device that clamps the upper punch, which is a mold, to the mounting plate. The clamp lever is rotatably mounted with a pin, and the clamp that holds the upper punch is tightened with this clamp lever. The upper punch can be fastened to the plate.

  However, when tightening, first check whether the center of the upper punch is aligned with the mounting plate, then engage the fixing bracket with the upper punch and tighten the fixing bracket with the clamp lever. become.

  For this reason, when attaching the upper punch, it is necessary to confirm the positioning of the upper punch with respect to the attachment plate. In addition, the clamp lever and the fixing bracket are divided into two parts, and two steps of engagement of the fixing bracket with the upper punch and tightening with the clamp lever are required for the fastening operation.

  Therefore, when the upper punch is attached, there is a problem that the three-stage work is required in combination with the positioning confirmation work and the subsequent fastening work, which makes the fastening work extremely complicated.

JP 2000-140961 A

  The problem to be solved is that the fastening operation is extremely complicated.

In the present invention, a claw that is supported so as to be swingable and reciprocable on the base side and that pushes the fixed member against the base side by advancing movement and swinging with respect to the fixed member side in order to facilitate the fastening operation. And a movable piece provided at the front end portion in the forward / backward direction, and the movable piece provided at the rear end portion in the forward / backward direction and screwed so as to intersect the forward / backward direction. A screw part that strikes the base side and receives a reaction force to swing the movable piece; a lever part having one end coupled to the screw part and provided with a guided part in the middle part; and a forward and backward direction of the movable piece The lever portion is disposed between the threaded portion and the guided portion and is rotated in the anti-screwing direction from the screwing neutral position of the threaded portion to the screwing retracted position to contact and guide the guided portion. Through the threaded portion A first guide portion for retracting and moving the piece and a first guide portion sandwiching the guided portion in the advancing and retreating direction of the movable piece, and the lever portion is screwed from the screw retraction position of the screw portion. A holding jig provided with a second guide part that abuts and guides the guided part by rotating it in the screwing direction to a neutral position and moves the movable piece through the screw part , The main feature is that the guided portion is a bearing attached to the lever portion .

According to the present invention, a claw portion which is supported on the base side so as to be swingable and can be moved back and forth is provided at the front end portion in the advancing / retreating direction with a claw portion which presses the fixed member against the base side by advancing movement and swinging on the fixed member side A piece is provided at a rear end portion of the movable piece in the advancing / retreating direction and is screwed so as to intersect the advancing / retreating direction. A screw part for swinging the movable piece, a lever part having one end coupled to the screw part and having a guided part at an intermediate part, and between the screw part and the guided part in the advancing and retreating direction of the movable piece. The lever portion is rotated in the anti-screwing direction from the screwing neutral position of the screw portion to the screwing retracted position so as to contact and guide the guided portion and retract the movable piece via the screw portion. The first guy to move The lever portion is rotated in the screwing direction from the screw retraction position of the screw portion to the screw-neutral position with the guide portion being sandwiched in the advancing and retreating direction of the movable portion and the first guide portion. A holding jig provided with a second guide portion that abuts and guides the guided portion to move the movable piece forward through the screw portion, and the guided portion includes the lever portion. since a bearing attached to, to forward and backward movement of the movable piece by only rotating operation of the lever unit can be swung along with the advancing movement.

  For this reason, when the fixed member is fastened to the base side, the movable piece is moved forward only by operating the lever portion, and the movable piece is swung as it is, and the fixed member is moved relative to the base side by the claw portion. It can be pressed down and the fastening operation can be performed very easily.

  The purpose of facilitating the fastening work was realized by linking the lever part and the movable piece.

[Pressing jig]
1 to 4 show the structure of a holding jig according to an embodiment of the present invention. FIG. 1 is a plan view showing a state in which a mold is fastened by a pair of holding jigs. FIG. 3 is a plan view showing the neutral state of the jig, FIG. 3 is a cross-sectional view showing the neutral state of one pressing jig, and FIG. 4 is a cross-sectional view showing the relationship between the positioning convex part and the positioning concave part.

  As shown in FIG. 1, a molding die (lower mold) W of a resin product that is a member to be fixed can be fastened to the base 5 side by a pair of pressing jigs 1 and 3. The fixed member may be an upper mold of a resin product molding die or other member.

  The holding jigs 1 and 3 have a symmetrical structure and fasten the molding die W on both the left and right sides. The holding jig 1 will be described, and the holding jig 3 is given the same reference numerals as the corresponding components.

  As shown in FIGS. 1 to 3, the holding jig 1 includes a movable piece 7, a screw portion 9, a lever portion 11, and first and second guide portions 13 and 15.

  The movable piece 7 is supported on the base 5 side so as to be swingable and movable back and forth. The movable piece 7 has a rectangular shape in plan view and has a stepped cross section. The movable piece 7 is provided with a claw portion 17 and a positioning convex portion 19 at the front end in the advancing direction with respect to the molding die W.

  The claw portion 17 presses the molding die W against the base 5 side. Referring to FIG. 4, the positioning convex portion 19 is inserted into the positioning concave portion 21 of the molding die W to position the molding die W toward the base 5.

  That is, the positioning projection 19 is fitted into the positioning recess 21 of the molding die W by the movement of the movable piece 7 toward the molding die W, and the molding die W is pressed before the molding die W is pressed by the claw portion 17. In addition, relative positioning between the movable pieces 7 is performed, and the molding die W is pressed and fastened to the base 5 side by the movement of the movable pieces 7 in the swinging direction.

  The positioning by the positioning convex portion 19 and the positioning concave portion 21 can be performed when the molding die W is pressed by the claw portion 17. It is also possible to provide the positioning projection 19 on the molding die W and provide the positioning recess 21 on the movable piece 7.

  The movable piece 7 is supported by a pin 23 and a long hole 25 into which the pin is fitted on the base 5 side. The pins 23 project from both sides of the movable piece 7 in the width direction, and the long holes 25 are provided in the guide rails 27 and 29.

  The long hole 25 is formed long in the advancing and retreating direction of the movable piece 7 along the inner side surfaces of the guide rails 27 and 29.

  The pin 23 is supported by the long hole 25, and the movable piece 7 can swing around the pin 23. The movable piece 7 moves relative to the molding die W by moving the pin 23 relative to the long hole 25. Advancing and retracting is possible.

  The guide rails 27 and 29 are arranged on both sides of the movable piece 7 and are fastened and fixed to the guide block 31 by bolts 33. The guide block 31 is attached to the base 5 side.

  The screw portion 9 is provided at the rear end portion in the advance / retreat direction of the movable piece 7 and is screwed so as to intersect the advance / retreat direction. The screw part 9 is screwed and moved by screwing from the screwing neutral position, and hits the molding die 1 on the base side to receive a reaction force. When the screw portion 9 abuts against the guide block 31, the rear end portion of the movable piece 7 in the forward / backward direction moves toward the lever portion 11 along the screw portion 9 and swings the movable piece 7.

  The lever portion 11 has a rectangular long plate shape and extends in the advancing / retreating direction of the movable piece 7. One end of the lever portion 11 is coupled to the screw portion 9, and a bearing 35, which is a guided portion, is attached to the intermediate portion by a bearing attachment bolt 37.

  The first and second guide portions 13 and 15 are a pair of parallel walls and are formed in the guide block 31. Note that the first and second guide portions 13 and 15 are not limited to being completely parallel, but may be any one that can guide the bearing 35 to advance and retract the movable piece 7.

  The distance between the first and second guide portions 13 and 15 corresponds to the diameter of the bearing 35 and is such that the bearing 35 can move between the first and second guide portions 13 and 15 without rattling.

  The first guide portion 13 is disposed between the screw portion 9 and the bearing 35 in the advancing and retreating direction of the movable piece 7. The first guide portion 13 extends from approximately the center in the width direction of the guide block 31 to one side, and is provided with an inclined surface 39 at an end portion on the center side.

  The second guide portion 15 is disposed to face the first guide portion 13 with the bearing 35 interposed therebetween in the advancing and retreating direction of the movable piece 7. The second guide portion 15 is formed across the width direction of the guide block 31. However, the second guide portion 15 can also be set to the same length as the first guide portion 13.

[Positioning, fastening, and disengaging operations]
FIG. 5 is an operation plan view of the screw portion at the screwing retracted position, FIG. 6 is an operation plan view of the screw portion at the screwing neutral position, and FIG. 7 is an operation plan view of the screw portion at the screwing protruding position.

5 is a state in which the screw portion 9 is screwed and retracted in the axial direction with respect to the movable piece 7 and does not receive a reaction force from the guide block 31.
The screw neutral position in FIG. 6 is a state in which the threaded portion 9 is screwed and moved partway in the axial direction with respect to the movable piece 7 from the position in FIG. is there.
7, the threaded portion 9 is further screwed and moved in the axial direction with respect to the movable piece 7, the movable piece 7 is swung, and the threaded portion 9 is pressed against the guide block 31. In this state, the claw portion 17 presses the molding die W while receiving the force.

(Positioning operation)
The lever part 11 is rotated in the screwing direction from the screwing retracted position (FIG. 5) of the screw part 9 to the screwing neutral position (FIG. 6).
With this rotation operation, the bearing 35 is abutted and guided by the second guide portion 15, and the lever portion 11 rotates around the screw portion 9. By this rotation, the lever portion 11 is linearly along the advancing / retreating direction of the movable piece 7 with respect to the molding die W as shown in FIG. In response to this, the movable piece 7 moves forward to the molding die W side through the coupling of the screw portion 9. As the movable piece 7 moves forward, the positioning convex portion 19 is fitted into the positioning concave portion 21 of the molding die W, and positioning of the molding die W with respect to the base 5 is performed.
(Fastening operation)
The lever portion 11 is further rotated from the screw neutral position of the screw portion 9 in FIG. 6 to the screw protrusion position side in FIG. At this time, the first guide portion 13 is cut off at the center in the width direction of the guide block 31, and the lever portion 11 is allowed to rotate to the state shown in FIG. The inclined surface 39 of the first guide portion 13 smoothly moves the lever portion 11 from the state of FIG. 6 to the state of FIG. 7 and from the state of FIG. 7 to the state of FIG.

By this rotation operation of the lever portion 11, the screw portion 9 is screwed and moved from the screwing neutral position to the screwing protruding position, and abuts against the guide block 31 to receive a reaction force. When the screw portion 9 receives a reaction force from the guide block 31, the rear end portion of the movable piece 7 in the forward / backward direction moves away from the guide block 31 in the axial direction of the screw portion 9 as the screw portion 9 rotates. By this separation movement, the movable piece 7 swings around the pin 23, and the claw portion 17 presses the molding die W against the base 5 side, so that the molding die W can be fastened to the base 5 side.
(Leaving operation)
The lever portion 11 is rotated in the anti-screwing direction from the screwing protrusion position (FIG. 7) of the screw portion 9 to the screwing retracted position (FIG. 5).

  By the rotation operation from FIG. 7 to FIG. 5, the bearing 35 is abutted and guided by the first guide portion 13. When the lever portion 11 is rotated around the screw 9 by this guide, the movable piece 7 is pulled away from the molding die W through the coupling at the screw portion 9 and retreats. In this state, the claw portion 17 is separated from the molding die W.

[Effect of Example]
In the embodiment of the present invention, the claw portion 17 is supported on the base 5 side so as to be swingable and movable back and forth, and presses the molding die W against the base 5 side by advancing movement and swinging with respect to the molding die W side. The movable piece 7 provided at the forward / backward direction front end portion and the movable piece 7 provided at the rear end portion in the forward / backward direction are screwed so as to intersect the forward / backward direction, and the screwing movement from the screwing neutral position to the screwing protruding position is performed. A screw portion 9 that strikes the base 5 and receives a reaction force to swing the movable piece 7; a lever portion 11 having one end coupled to the screw portion 9 and provided with a bearing 35 in the middle portion; and the movable piece The bearing 35 is disposed between the screw portion 9 and the bearing 35 in the advancing and retreating direction 7 by rotating the lever portion 11 in the anti-screwing direction from the screw neutral position to the screw retracting position. Abut guide A first guide portion 13 for retracting and moving the movable piece 7 via the screw portion 9, and a lever disposed opposite to the first guide portion 13 with the bearing 35 interposed in the advancing and retreating direction of the movable piece 7. By rotating the portion 11 in the screwing direction from the screwing retracted position of the screw portion 9 to the screwing neutral position, the bearing 35 is contacted and guided to move the movable piece 7 through the screw portion 9. Since the two guide portions 15 are provided, the movable piece 7 can be moved back and forth only by rotating the lever portion 11 and can be swung together with the advance movement.

  For this reason, when the molding die W is fastened to the base 5 side, the movable piece 7 is moved forward only by operating the lever portion 11, and the movable piece 7 is swung as it is and the molding die is moved by the claw portion 17. W can be pressed against the base 5 side, and the fastening operation can be performed very easily.

(Example 1) which is the top view of the state which fastened the metal mold | die with a pair of pressing jig. (Example 1) which is a top view which shows the neutral state of one pressing jig. (Example 1) which is sectional drawing which shows the neutral state of one holding jig. It is sectional drawing which shows the relationship between a positioning convex part and a positioning recessed part. (Example 1). (Example 1) which is an operation | movement top view in the screwing retraction position of a thread part. (Example 1) which is an operation | movement top view in the screwing neutral position of a thread part. (Example 1) which is an operation | movement top view in the screwing protrusion position of a thread part.

Explanation of symbols

W Molding die 1, 3 Holding jig 5 Base 7 Movable piece 9 Screw part 11 Lever part 13 First guide part 15 Second guide part 17 Claw part 19 Positioning convex part 21 Positioning concave part 23 Pin 25 Long hole

Claims (4)

A movable piece that is supported on the base side so as to be swingable and can be moved back and forth, and has a claw portion at the distal end in the advancing and retreating direction that presses the fixed member against the base side by advancing movement and swinging with respect to the fixed member side;
The movable piece is provided at the rear end in the advancing / retreating direction and is screwed so as to intersect the advancing / retreating direction. A threaded portion to swing,
A lever portion having one end coupled to the screw portion and a guided portion provided in an intermediate portion;
The guided portion is disposed between the screw portion and the guided portion in the advancing and retreating direction of the movable piece, and the lever portion is rotated in the anti-screwing direction from the screw neutral position to the screw retracting position of the screw portion. A first guide part that abuts the part and retracts the movable piece via the screw part; and
By rotating the lever part in the screwing direction from the screwing retracted position of the screw part to the screwing neutral position, the lever part is arranged to face the first guide part with the guided part sandwiched in the advancing and retreating direction of the movable piece. A second guide part that abuts and guides the guided part to move the movable piece forward through the screw part;
A holding jig provided with
The guided portion is a bearing attached to the lever portion.
A holding jig characterized by that. The pressing jig according to claim 1,
The pressing piece is characterized in that the movable piece is supported on the base side so as to be swingable and movable back and forth through a pin and a long hole into which the pin fits. The pressing jig according to claim 1 or 2,
The first and second guide portions are a pair of parallel walls. A pressing jig according to any one of claim 1 to 3
The movable piece is provided with one of a positioning convex part or a positioning concave part,
The movable piece is moved forward and inserted into a positioning concave portion or a positioning convex portion provided in the fixed member, and relative positioning between the fixed member and the movable piece is performed before or when the claw portion is pressed.
A holding jig characterized by that.

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