Movable stop pin die structure

Abstract

The utility model discloses a movable stop pin die structure, and relates to the field of appearance blanking dies. Comprising a male die fixing plate, a male die below the male die fixing plate, a female die below the male die, a jacking bolt connected with the male die fixing plate through a jacking bolt fixing plate, a movable stop pin under the jacking bolt, a discharging plate installed on the female die, a spring fixing plate on the outer side of the discharging plate and a spring. A strip-shaped groove with the narrow outer portion and the wide inner portion is formed in the middle of the upper surface of the discharging plate, the movable material blocking pin is installed in the strip-shaped groove through a material blocking pin fixing bolt, and the inner diameter of a bolt hole of the movable material blocking pin is slightly larger than the outer diameter of the material blocking pin fixing bolt, so that the movable material blocking pin can horizontally move in the strip-shaped groove. One end of the spring is connected to the spring fixing plate, and the other end of the spring is connected to the driving end of the movable stop pin. According to the utility model, the material belt can reach a proper blanking position only by pushing materials towards one direction, so that the working efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the field of shape blanking dies, in particular to a movable material blocking pin die structure. Background Art

[0002] Stamping operation refers to a pressure processing method that uses stamping dies and other stamping equipment to apply pressure to the raw materials of the workpiece under normal temperature conditions to complete the blanking separation or plastic deformation of the raw materials of the workpiece, thereby obtaining a finished workpiece. It can be divided into the following processes according to actual processing needs: blanking, punching, bending, cutting, trimming, drawing, flanging, etc. In the blanking process, the material belt needs to be continuously fed and blocked rhythmically.

[0003] The movable stop pin is one of the common structures of the blanking die. However, since the blanking die material is fixed, the existing stop pin structure will affect the forward feeding of the strip material. The extended stop pin will block the overlap of the strip material during feeding. For example, the T-shaped composite die provided by the patent with publication number CN106311893A has a lower end of the movable stop pin 16 set on the rubber block 12, and a stop pin hole is provided on the discharge plate 19, and the movable stop pin 16 is set in the stop pin hole (see Figure 7 ). When the die is continuously punching multiple T-shaped parts, the operator needs to lift the strip material and feed it forward, and also needs to visually check whether the strip material is placed in the appropriate position under the punch. The operation is complicated and affects work efficiency. Utility Model Content

[0004] The utility model aims to provide a movable material stopper pin die structure, which can realize the coordinated synchronization of the feeding operation and the material stopper operation before punching and shorten the adjustment time of the feeding.

[0005] In order to achieve the above purpose, the technical solution adopted is:

[0006] A movable stopper pin mold structure is composed of an upper mold and a lower mold, and the stopper pin structure is arranged in the middle of the lower mold. The mold structure includes a punch fixing plate and a punch below it, a die below the punch corresponding to the position of the punch, a jack bolt connected to the punch fixing plate through a jack bolt fixing plate, a movable stopper pin directly below the jack bolt, a stripper plate fixedly mounted on the die, a spring fixing plate fixed by bolts on the outside of the stripper plate, and a spring. A strip groove with a narrow outer side and a wide inner side is provided in the middle of the upper surface of the stripper plate. The movable stopper pin is installed in the strip groove through the stopper pin fixing bolt. The inner diameter of the bolt hole of the movable stopper pin is slightly larger than the outer diameter of the stopper pin fixing bolt, so that the movable stopper pin can move horizontally in the strip groove. One end of the spring is connected to the spring fixing plate, and the other end is connected to the driving end of the movable stopper pin. The spring is in a tightened state in a natural state.

[0007] Specifically improved, the spring fixing plate is L-shaped.

[0008] The height of the jack bolt can be adjusted by using a thread.

[0009] Compared with the prior art, the utility model has the beneficial effect that the operator only needs to push the material in one direction to make the material belt reach the appropriate blanking position, which not only improves the work efficiency, but also reduces the labor intensity and avoids the risk of injury caused by the punch. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the overall front view of the mold of the embodiment of the utility model;

[0011] Figure 2 A top view of the material blocking structure of an embodiment of the utility model;

[0012] Figure 3-Figure 6 The following are the different states of the stopper end of the movable stopper pin during the working process. Figure 5 is the initial state diagram before blocking. Figure 6 This is the state diagram when blocking the material. Figure 3 This is the state diagram when the upper die runs to the bottom dead center of the stroke; Figure 4 This is the state diagram after the upper die is raised;

[0013] Markings in the figure: 1-upper die base, 2-lower die base, 3-guide column, 4-punch fixing plate, 5-lift bolt fixing plate, 6-lift bolt, 7-punch, 8-spring fixing plate, 9-spring, 10-movable material stop pin, 11-unloading plate, 12-die, 13-strip material, 14-spring fixing plate bolt, 15-material stop pin fixing bolt, 16-workpiece after stamping.

[0014] Figure 7 This is the illustration of the specification of patent CN 106311893 A;

[0015] Markings in the figure: 12-rubber block, 16-movable blocking pin, 19-unloading plate. DETAILED DESCRIPTION

[0016] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and embodiments.

[0017] Example: Figure 1 and Figure 2As shown, a movable material stop pin mold structure includes an upper mold base 1, a guide column 3 slidingly connected to the upper mold base 1, a punch 7 fixed by a punch fixing plate 4 below the upper mold base 1, a die 12 corresponding to the position of the punch below the punch 7, a push bolt 6 connected to the punch fixing plate 4 by a push bolt fixing plate 5, a movable material stop pin 10 directly below the push bolt 6, a stripper plate 11 fixedly mounted on the die 12, a spring fixing plate 8 fixed on the outside of the stripper plate 11 by bolts 14, a spring 9, and a lower mold base 2. A strip groove with a narrow outside and a wide inside is milled in the middle of the upper surface of the unloading plate 11, that is, it is wide on the side close to the strip material 13 and narrow on the side close to the spring 9; the movable material stop pin 10 is installed in the strip groove through the material stop pin fixing bolt 15, and the inner diameter of the bolt hole of the movable material stop pin 10 is slightly larger than the outer diameter of the material stop pin fixing bolt 15, so that the movable material stop pin 10 can move horizontally in the strip groove; the spring fixing plate 8 is L-shaped, one end of the spring 9 is connected to the spring fixing plate 8, and the other end is connected to the left end of the movable material stop pin 10, and the spring 9 is in a tightened state in the natural state; the die 12 is fixed to the lower die base 2 by bolts.

[0018] The working principle of the utility model is to use the oblique tension of the spring and the vertical pressure of the jacking bolt to change the specific position of the stopper end of the movable stopper pin in the strip groove, so as to realize the alternating action of lifting and falling of the stopper pin. Figure 3-Figure 6 When the spring is not deformed, the spring 9 pulls the movable stop pin obliquely, so that the stop end of the movable stop pin stays on the upper surface of the die 12. The position of the movable stop pin 10 is as shown in FIG. Figure 5 As shown in FIG. 13, the strip material 13 is fed forward, pushing the movable stop pin 10 close to the strip groove A surface of the discharge plate 11, as shown in FIG. Figure 6 As shown. Then the upper die moves downward to the bottom dead center of the punching stroke, and the top bolt 6 moves downward to press the left end of the movable stop pin 10, so that the stop end of the movable stop pin 10 rises upward. At this time, the spring 9 is stretched obliquely, and the stop end of the movable stop pin 10 rests on the strip groove B surface of the discharge plate 11, as shown. Figure 3 Then, when the stroke rises, the strip material is fed in, and the movable stop pin 10 falls on the overlap of the strip material, as shown in FIG. Figure 4 As shown, when the overlap of the strip material passes over the movable stop pin 10, the spring 9 makes the stop end of the movable stop pin 10 fall on the upper surface of the die 12, and the movable stop pin 10 resumes the stop function, as shown in FIG. Figure 5 shown.

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary, but not restrictive, and the scope of the present invention is defined by the appended claims rather than the above explanations and descriptions, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. At the same time, any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A movable stopper pin mold structure, consisting of an upper mold and a lower mold, and the stopper pin structure is arranged in the middle of the lower mold; The mold structure comprises a punch fixing plate (4) and a punch (7) below the punch, a die (12) below the punch (7) corresponding to the position of the punch, a push bolt (6) connected to the punch fixing plate (4) via a push bolt fixing plate (5), a movable material stopper pin (10) directly below the push bolt (6), a stripper plate (11) fixedly mounted on the die (12), a spring fixing plate (8) fixed on the outside of the stripper plate (11) by bolts, and a spring (9), and is characterized in that: A strip groove which is narrow outside and wide inside is provided in the middle of the upper surface of the discharge plate (11); the movable material stop pin (10) is installed in the strip groove through a material stop pin fixing bolt (15); the inner diameter of the bolt hole of the movable material stop pin (10) is larger than the outer diameter of the material stop pin fixing bolt (15), so that the movable material stop pin (10) can move horizontally in the strip groove; one end of the spring (9) is connected to the spring fixing plate (8), and the other end is connected to the driving end of the movable material stop pin (10); the spring (9) is in a tightened state in a natural state.

2. The movable stopper pin mold structure according to claim 1 is characterized in that: The spring fixing plate (8) is L-shaped.

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