Template for blanking sealing ring

Abstract

The utility model provides a die plate for blanking a sealing ring, and belongs to the technical field of dies. The problem of how to reduce the rejection rate of sealing ring production is solved. According to the die plate for blanking the sealing ring, a plurality of blanking holes are formed in the die plate, a plurality of first clearance grooves are formed in the die plate, every four first clearance grooves form a group, a containing area is formed in the position, located in each group of first clearance grooves, of the die plate, and the blanking holes are formed in the containing areas. The template for blanking the sealing ring can reduce the rejection rate of sealing ring production.

Description

Technical Field

[0001] The utility model belongs to the technical field of moulds and relates to a template for blanking sealing rings. Background Art

[0002] Sealing rings are very common in modern life and are indispensable sealing parts in the existing industry.

[0003] At present, there are various production methods for sealing rings, but unified blanking after injection molding is still the mainstream production method at present. The reason is that by using the injection molding method, several sealing rings can be produced and formed together, and through unified blanking, the purpose of high-efficiency production can be achieved.

[0004] However, in the actual production process, especially during the injection molding process, the amount of filler added by workers into the mold is actually excessive (the excessive addition of raw materials is necessary because it is impossible to perfectly control the amount of raw material added and it is impossible to achieve the situation where the amount of raw material added is equal to the actual demand. And if the amount of raw material added is too little, the formed sealing rings will not meet the production standards). As a result, several sealing rings are connected by waste materials, and these waste materials are not completely flat.

[0005] Therefore, during the cutting work, after several formed sealing rings are embedded into several cutting holes opened on the cutting template, due to the uneven waste materials and the abutment of these waste materials against the template, some of the sealing rings are not completely embedded in the cutting holes, resulting in the cutting of some of the sealing rings together during cutting. Therefore, the rejection rate of the cutting work remains high. Summary of the Invention

[0006] The purpose of the utility model is to provide a template for blanking sealing rings in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is: how to reduce the rejection rate of sealing ring production.

[0007] The purpose of the utility model can be achieved by the following technical solutions: A template for blanking sealing rings, wherein a plurality of blanking holes are opened on the template. It is characterized in that a plurality of first relief grooves are opened on the template, and every four of the first relief grooves form a group. A placement area is formed in each group of the first relief grooves on the template, and the blanking holes are opened in the placement area.

[0008] The working principle of this application is as follows: After the sealing rings are injection-molded, workers can lay a number of sealing rings connected together by waste materials on the template. A number of punching holes are provided on the template, so that each sealing ring is correspondingly embedded in each punching hole. Then, the punching knife is controlled to move downward, and the sealing rings and the waste materials are punched by the shearing action formed by the cooperation of the punching knife and the punching holes. The obtained sealing rings fall out through the punching holes, while the waste materials remain on the template and can be taken out when the mold is opened later. On this premise, this application sets a number of clearance grooves 1 on the template, and every four clearance grooves 1 form a group. Through the setting of several groups of clearance grooves 1, a placement area is formed on the template within each group of clearance grooves 1, and each clearance groove 1 is provided in each placement area, so that each group of clearance grooves 1 surrounds each punching hole. Therefore, when the sealing rings are placed in the punching holes, the waste materials on the circumferences of the sealing rings can be carried by the four clearance grooves 1, so as to ensure that the thick parts of the waste materials can be embedded in the clearance grooves 1, prevent the unevenness of the waste materials from causing the incomplete embedding of the sealing rings into the punching holes, effectively avoid the cutting of the sealing rings during the punching process, and effectively reduce the rejection rate.

[0009] In the above-mentioned template for punching sealing rings, the cross-sectional profile of each clearance groove 1 along the radial section of the punching hole is circular. Thus, the plate surface space of the template is reasonably utilized to ensure that the number of punching holes and clearance grooves 1 opened is as large as possible, ensure that the number of sealing rings that can be punched and processed at one time is more, and guarantee the production efficiency.

[0010] In the above-mentioned template for punching sealing rings, a number of strip-shaped clearance grooves 2 are also provided on the template. Every two adjacent clearance grooves 1 in the same group are connected through the clearance grooves 2. Through this setting, the four clearance grooves in the same group can be connected. During the punching process, when the waste materials are squeezed, in addition to deforming into the clearance grooves 1, they can also deform into the clearance grooves 2, so as to avoid the excessive compression and breakage of the waste materials into multiple pieces, ensure more convenient subsequent picking. Secondly, since the four clearance grooves 1 in the same group are correspondingly connected through the four clearance grooves 2, when any one of the clearance grooves 1 is filled with waste materials, it can deform into the adjacent clearance groove 1 through the clearance groove 2.

[0011] In the above-mentioned template for punching sealing rings, the inner wall profile of each clearance groove 2 is arc-shaped. Ensure that the inner wall of the clearance groove 2 is more rounded to prevent the waste materials from being squeezed and broken when deforming into the clearance grooves 2.

[0012] In the above-mentioned template for punching sealing rings, the port of the punching hole facing the end of the template with the clearance groove 1 and the clearance groove 2 is flared. Ensure that it can play a good guiding role when workers place the sealing rings.

[0013] Compared with the prior art, the template for punching seals has the following advantages:

[0014] By opening a number of clearance grooves I on the template, every four clearance grooves I form a group and a placement area on the template is formed therein. A punching hole is opened in the placement area. Before the punching operation, the worker can place the seal to be cut in the punching hole, and the waste around the seal is carried by the four clearance grooves I in the same group, avoiding incomplete placement of the seal in the punching hole due to uneven thickness of the waste, ensuring the subsequent punching quality and effectively reducing the rejection rate. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the template for punching seals applied to a punching die.

[0016] Figure 2 is a schematic structural diagram of the template for punching seals.

[0017] Figure 3 is Figure 2 a partial enlarged view of part A in

[0018] In the figure, 1. template; 11. punching hole; 12. clearance groove I; 13. placement area; 14. clearance groove II; 2. stamping plate; 3. punching knife; 4. moving plate. Detailed Embodiment

[0019] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0020] As Figure 2 shown, on one side plate surface of the template for punching seals, a number of clearance grooves I 12 are opened. The number of clearance grooves I 12 are arranged in a matrix on the plate surface of 1. Every four adjacent clearance grooves I 12 form a group, so that a placement area 13 is formed in 1 within each group of clearance grooves I 12, and a punching hole 11 penetrating through both side plate surfaces of 1 is opened in each placement area 13. In combination with Figure 3 , a number of strip-shaped clearance grooves II 14 are also opened on 1. Among the clearance grooves I 12 in the same group, every two adjacent clearance grooves I 12 are connected through a clearance groove II 14.

[0021] As Figure 2 shown, the cross-sectional contour of each clearance groove I 12 along the radial section of the punching hole 11 is circular, the inner wall of each clearance groove II 14 is arc-shaped, and in addition, the port of each punching hole 11 facing the end of 1 with the clearance groove I 12 and the clearance groove II 14 is flared.

[0022] The template for punching seals is specifically applied to a punching die, such asFigure 1 As shown, 1 is horizontally arranged, with a stamping plate 2 above it and a moving plate 4 above the stamping plate 2. Both are horizontally arranged in the same way as 1. A number of through holes are provided in the stamping plate 2, and a number of columnar blanking knives 3 are fixed on the bottom surface of the moving plate 4. The moving plate 4 and the stamping plate 2 are movably connected by a pin shaft, and an elastic member acting elastically between the moving plate 4 and the stamping plate 2 is sleeved outside the pin shaft. Each blanking knife 3 passes through each through hole and is in one-to-one correspondence with the position of the blanking hole 11.

[0023] When working, the user places a number of sealing rings connected by waste materials on 1, so that each sealing ring is embedded through the upper end port of each blanking hole 11, and at the same time, the waste materials around the sealing rings are embedded into the first relief groove 12 to avoid the situation that the sealing rings are not completely embedded in the blanking holes 11 due to the unevenness of the waste materials. Then, the moving plate 4 is controlled to drive the blanking knives 3 and the stamping plate 2 to move downward. On the premise that the stamping plate 2 presses each sealing ring and the waste materials, the moving plate 4 overcomes the elastic force of the elastic member, so that the blanking knives 3 move downward further to blank the sealing rings. And in this state, the continuously squeezed waste materials can deform into the first relief groove 12 and the second relief groove 14 due to their own material characteristics to avoid breakage due to excessive stress, ensuring that the subsequent picking of waste materials is more convenient.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0025] Although terms such as template 1, blanking hole 11, first relief groove 12, placement area 13, second relief groove 14, stamping plate 2, blanking knife 3, moving plate 4, etc. are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A template for blanking a sealing ring, wherein a plurality of blanking holes (11) are formed in the template (1), and the characteristics are as follows: A plurality of first clearance grooves (12) are formed in the template (1), and every four of the first clearance grooves (12) form a group. A placement area (13) is formed in the template (1) within each group of the first clearance grooves (12), and the punching hole (11) is formed in the placement area (13).

2. The template for punching the sealing ring according to claim 1, characterized in that, The cross-sectional profile of each of the first clearance grooves (12) cut along the radial direction of the punching hole (11) is circular.

3. The template for punching the sealing ring according to claim 1 or 2, characterized in that A plurality of second clearance grooves (14) in strip shape are further formed in the template (1), and every two adjacent first clearance grooves (12) in the same group are connected through the second clearance grooves (14).

4. The template for blanking of the sealing ring according to claim 3, characterized in that, The inner wall profile of each of the second clearance grooves (14) is arc-shaped.

5. The template for punching the sealing ring according to claim 4, characterized in that, One end port of the punching hole (11) facing the template (1) where the first clearance grooves (12) and the second clearance grooves (14) are located is flared.

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