JPH04129514U - Stripper mechanism of press molding equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention relates to a stripper mechanism installed in a press molding device. [Structure] The present invention includes a punch held by a punch holder via a punch retainer, a long groove-shaped locking recess provided at least one strip in the lower part of the punch in the longitudinal direction thereof, and the locking recess a steel ball as a locking member inserted into the punch, a stripper plate loosely fitted into the lower part of the punch, and a stripper plate provided toward the locking recess from the radial direction of the stripper plate, and the locking member A stripper mechanism of a press-forming device, which comprises a tightening member such as a tightening bolt that urges the stripper plate toward the locking recess, and at least one spring provided between the punch retainer and the stripper plate that controls the return of the stripper plate. The present invention is characterized in that the installation space for the stripper plate is extremely reduced.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a stripper mechanism installed in press molding equipment. .

0002

[Conventional technology]

Conventionally, the general structure of this type of stripper mechanism was as follows. ing.

0003 First, as shown in Fig. 2, a die set consisting of a die holder 1 and a punch holder 2 is prepared. , the die 3 is held and fixed on the die holder 1 by the die retainer 4, and A punch 6 is held and fixed to the lower surface of the punch holder 2 by a punch retainer 5.

0004 In the stripper mechanism of this die set, the stripper -Plate 9 is connected to the punch holder 2 via a stripper bolt 8 that is vertically installed. It is loosely fitted into the lower part of the punch 6 and moves upward (upward in the drawing) when the punch 6 descends. When the stripper bolt 8 is moved upward, the spring 7 wound around the stripper bolt 8 is compressed. It is configured to do this.

[0005] Then, the stripper plate 9 that has moved upward is attached to the compressed spring 7. It is configured to return to its original position due to repulsive force.

[0006] Note that for the stripper plate 9, the stripper insert 10 is Not retained through bolts.

[0007] Also, as in the illustrated example, the space for the stripper plate 9 can be secured, but the No, for example, installation of the stripper plate 9, such as with a cam type die set method. space (in the illustrated example, the stripper bolt 8 and this stripper bolt This refers to the space in which the support plate 11 for mounting is provided. (same below) is extremely small In this case, the stripper mechanism cannot be adopted.

[0008] Therefore, as mentioned above, the mounting space for the stripper plate 9 is extremely limited. Urethane direct stripper that usually uses urethane rubber - Mechanisms, etc. are adopted.

[0009] On the other hand, as a technical document similar to the present invention, the clamp of Utility Model Publication No. 2-21148 There is a registered utility model for equipment, burring mold, etc., No. 2-25535.

0010

[Problem that the idea aims to solve]

The conventional stripper mechanism using the stripper bolt and spring is For example, compound cam type die set where there is no space to install the tripper plate. This method cannot be adopted, and there is room for improvement.

[0011] Similarly, regarding the stripper mechanism disclosed in the registered utility model, almost all It can be interpreted in the same way.

0012 In addition, with the urethane direct stripper mechanism, etc., as mentioned above, the stripper The problem of mounting space for the plate is solved.

[0013] However, urethane etc. tend to deteriorate, and transfer press or This is because progressive press processing, compound cam type die set method, etc. cause a lot of problems with lids. There is a naturalness.

[0014]

[Means to solve the problem]

Therefore, the present invention requires extremely little installation space for the stripper plate. Even in die sets, installation is possible, the mechanism is simplified, and maintenance management is easy. and can be manufactured into equipment or products at low cost. Also, there will be no problems even if it is commercialized. Not true. Considering the above, the following configuration will be adopted.

[0015] That is, the present invention provides a punch that is held by a punch holder via a punch retainer. and, At least one strip is provided at the bottom of this punch and toward its longitudinal direction. a long groove-shaped locking recess; A steel ball as a locking member inserted into the locking recess, a stripper plate loosely fitted to the lower part of the punch; Provided toward the locking recess from the radial direction of the stripper plate. , and a tightening member such as a tightening bolt that urges the locking member toward the locking recess; Punch retainer and stripper plate that control the return of the stripper plate at least one spring provided between the This is a stripper mechanism of a press molding machine consisting of:

[0016]

[Effect]

Next, the assembly method and operation of the present invention will be explained.

[0017] First, the assembly method is to suspend the punch from the punch retainer provided on the punch holder. hold

[0018] Then, remove the stripper plate loosely fitted between the punch retainer and the bottom of the punch. (A tripper can also be used) or install several springs between the spring receiver and the spring receiver.

[0019] Next, loosely fit the stripper plate to the bottom of the punch, and then Each locking member (in this example , is a steel sphere, and will be explained below using a steel sphere. ) and insert each steel ball into each of the punches. The locking recess (in this example, it is a cut long groove, and will be explained below as a long groove) and the strip (Of course, each through hole, each steel sphere, etc. Since it can be used alone, the explanation will be omitted. Also, it is the same whether it is single or multiple. Therefore, each term will be explained singly below. ).

[0020] After that, screw a tightening bolt into the threaded part of the through hole, and this tightening bolt The steel ball is pressed through the small hole part or the piece body (not shown), and the pressure is applied to the bottom of the long groove. come into contact with

[0021] Through the pressing of this steel ball and the tightening of the tightening bolt, the stripper plate is It is slidably attached to the bottom of the punch.

[0022] In the above configuration, when the punch holder descends, it touches the tip of the die. A workpiece (not shown) is clamped between the clamping surface of the stripper plate. .

[0023] After that, when the punch holder descends further, the punch is inserted into the long groove. The pan is guided by a steel ball and smoothly descends through the rolling of the steel ball. Follows the descent of the holder.

[0024] Then, the tip of the punch holder is inserted into the insertion hole of the die for punching and cutting. Various processing such as machining is performed (of course, the same applies when there are multiple punch holders, dies, etc.) It is. ).

[0025] The stripper plate moves to the punch holder side as the punch descends. , compress the spring.

[0026] After that, when the above-mentioned processing is completed and the punch holder is raised, the stripper plate is The punch is lowered by the repulsive force of the compressed spring, and the steel inserted in the long groove of the punch Guided by the sphere and smoothly lowered through the rolling of the steel sphere, finally Return to initial state.

[0027] Then, the processed product or residual processed material is removed or disposed of, and the above-mentioned processing is completed. Process.

[0028] To remove the stripper plate for various purposes, remove the tightening bolts. This can be easily accomplished by removing the steel ball and the like.

[0029] In addition, in the present invention, the locking member is made of a steel ball, so that the tightening bolt can be tightened. This is very useful for proper tightening and smooth sliding of the punch holder.

[0030]

【Example】

An embodiment of the present invention will be described below with reference to the drawings.

[0031] Note that the same names and numbers are used for components having the same names as those described above.

[0032] A punch 16 (or a key punch) is attached to the punch holder 2 via the punch retainer 5. (possible) is supported on a suspension rack.

[0033] The lower part 16a of this punch 16 has a long groove 116 extending in the longitudinal direction. It is formed.

[0034] 19 in the figure is a stripper plate loosely fitted to the lower part 16a of the punch 16. The radial direction of this stripper plate 19 (orthogonal to the longitudinal direction of the punch 16) A through hole 119 into which the steel ball 30 is inserted is provided in the direction shown in FIG.

[0035] The through hole 119 is provided with a tightening bolt 31 inserted into the through hole 119. A screw hole portion 119a into which the screw portion 31a is screwed, and a narrow diameter portion 31 of this tightening bolt 31. b or a pore 119b into which the piece is inserted.

[0036] Then, the steel ball 30 is securely attached to the tip of the narrow diameter portion 31b of the tightening bolt 31. A spherical portion 311b is formed so that it can be caught.

[0037] In addition, as a tightening member other than the tightening bolt 31, for example, a tightening spring material, the same direction Alternatively, a member inserted from a different direction may be considered.

[0038] As described above, the steel ball 30 is inserted through the through hole 119, and then the tightening bolt is When the bolt 31 is screwed in (tightened), approximately 1/2 of the steel ball 30 will fit into the long groove 1 of the punch 16. 16 and the other approximately 1/2 is in the through hole 119 of the stripper plate 19. located respectively.

[0039] As a result, the stripper plate 19 is loosely fitted into the lower part 16a of the punch 16. and is configured to be slidable in the longitudinal direction of the punch 16 via the steel ball 30. It will be done.

[0040] Note that it is also possible to provide a stripper insert 10 as in the conventional case.

[0041] In the figure, 32 is a spring receiver provided at the upper end of the stripper plate 19. The strip is between the spring receiver 32 and the punch retainer 5 or the punch holder 2. A spring 33 is provided that controls the return of the upper plate 19.

[0042] In the above explanation, the punch 16 has a single structure, but a composite cam type die set method can also be used. be interpreted in the same way.

[0043]

[Effect of the idea]

As detailed above, the present invention includes a steel ball locking member and a clamping member at the bottom of the punch. Since the stripper plate is loosely fitted through the attachment member, the following It has a similar effect.

[0044] (1) The space for the stripper plate can be minimized.

[0045] (2) Adopts composite cam type die set method for various processing through minimum space. can.

[0046] (3) The stripper plate can be attached and removed from the punch with one touch. Wear.

[0047] (4) If the locking member is a steel sphere and the tightening member is provided with a spherical part, the stripper Suspension support of the plate, sliding movement, etc. can be reliably achieved.

[0048] (5) The idea is low cost and can be easily adopted in various conventional processing equipment. .

[0049] (6) Also, the number of parts is small, contributing to simpler structure and easier maintenance management. .

[0050] (7) If a steel ball is used as the locking member, a standardized configuration of this device can be easily created. Ru.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of the present invention.

FIG. 2 is an explanatory diagram illustrating a main part of a conventional press molding apparatus in cross section.

[Explanation of symbols]

1 Die holder 2 Punch holder 3 dies 4 Die retainer 5 Punch retainer 6 punch 7 Spring 8 Stripper bolt 9 Stripper plate 10 Stripper insert 11 Support plate 16 Punch 16a lower part 116 long groove 19 Stripper plate 119 Through hole 119a Screw hole part 119b Pore 30 Steel sphere 31 Tightening bolt 31a Thread part 31b Narrow diameter part 311b Spherical part 32 Spring receiver 33 Spring

Claims (2)

[Scope of utility model registration request] Claim 1: A punch held by a punch holder via a punch retainer, a locking recess in the form of a long groove provided at least one strip in the lower part of the punch in the longitudinal direction thereof, and a locking recess that is inserted into the locking recess. A locking member such as a sphere or piece, a stripper plate loosely fitted into the lower part of the punch, and a locking member provided toward the locking recess from the radial direction of the stripper plate. A press forming device comprising: a tightening member such as a tightening bolt that urges the stripper plate toward the locking recess; and at least one spring provided between the punch retainer and the stripper plate that controls the return of the stripper plate. Stripper mechanism. 2. A stripper mechanism for a press molding apparatus, wherein the axial center of the tightening bolt according to claim 1 and the spherical center of the locking member are located on the same horizontal plane.