Structure for improving mold alignment precision and mold

Abstract

The utility model provides a structure and a mould for improving mould alignment accuracy, and relates to the technical field of stamping moulds, the mould structure is located in the middle of an upper clamping plate, a guide hole is formed in the middle of the upper clamping plate, and the guide hole is composed of an upper outer hole and a lower inner hole which are located on the same axis. An inner hole is formed in the upper clamping plate, an optical axis is arranged in the inner hole through an equidistant shaft sleeve, the lower portion of the optical axis extends into the upper die base, and the equidistant shaft sleeve is in clearance fit with the upper clamping plate, so that the equidistant shaft sleeve can generate certain displacement in the guide hole. According to the die structure, on the premise that the requirement for the precision of a punching machine is not high, the die assembly precision of the die with the small punching gap is improved, after the structure is applied, the service life of the die can be prolonged, the machining efficiency of the die can be improved, the mass production of the die on a production line is guaranteed, and the machining efficiency and the finished product percent of pass are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a structure and a die for improving the alignment accuracy of the die. Background Art

[0002] Stamping is one of the commonly used processing procedures in the field of metal processing. Deviations during the installation or use of the punch press may cause the precision of the stamping to fail to meet the process requirements and damage the mold. Such high-precision molds installed on the punch press will affect the processing accuracy of the mold, resulting in defective or waste products, affecting the processing efficiency of the production line. In addition, the poor precision of the upper and lower molds will also reduce the life of the mold. Therefore, how to ensure the accuracy of the mold to produce qualified products when the punch press accuracy is not high, while reducing mold loss has become an urgent problem to be solved. Utility Model Content

[0003] The utility model aims to provide a structure and a mold for improving the mold alignment accuracy, so as to solve the problems mentioned in the background technology.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted is: a structure for improving the mold alignment accuracy, which is located in the middle of the upper clamping plate, and a guide hole is opened in the middle of the upper clamping plate. The guide hole consists of an upper outer hole and a lower inner hole whose central axes are on a straight line. The central axes of the two are on the same axis. An optical axis is installed through an equidistant sleeve. The lower part of the optical axis extends into the upper mold seat. There is a clearance fit between the equidistant sleeve and the upper clamping plate. When the upper and lower molds are closed, the equidistant sleeve can be displaced in the guide hole, that is, the horizontal position of the upper mold is adjusted according to the actual position of the guide column on the lower mold when the upper and lower molds are closed.

[0005] Specifically, the guide hole is a circular hole that passes through the entire upper mounting plate.

[0006] Specifically, the maximum displacement produced by the equidistant sleeve is 0.3 mm.

[0007] A mold with a structure for improving mold alignment accuracy is used for stamping processing of thin plate workpieces, including an upper mold and a lower mold, the upper mold including an upper clamping plate, an upper mold base fixed below the upper clamping plate, an upper fixed plate and an upper pad installed below the upper mold base, a blanking punch and a discharge plate installed below it, an automatic guide structure composed of an optical axis and equidistant shaft sleeves installed in the middle of the upper clamping plate, and a guide column and guide sleeve fixed on the upper mold base, the lower mold including a lower mold base and a concave mold plate installed thereon, and a guide column arranged on one side of the concave mold plate, the guide column and guide column and guide sleeve are matched with each other; the entire mold is fixed between a slide block on a punch press and a lower table of the punch press.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The utility model improves the mold closing accuracy of high-precision molds with small punching gaps under the premise of low requirements on the punching machine accuracy, thereby increasing the service life and processing efficiency of the molds and better ensuring the mass production of the molds on the production line and the qualified rate of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a front view of the mold involved in the example of the utility model;

[0011] Figure 2 for Figure 1 Enlarged view of the guide hole position at A in the middle.

[0012] In the figure, 1-slider on punch press, 2-equidistant sleeve, 3-punching punch, 4-guide post, 5-guide post and guide sleeve, 6-upper clamping plate, 7-upper die seat, 8-upper pad, 9-upper fixed plate, 10-unloading plate, 11-lower table of punch press, 12-concave template, 13-lower die seat, 15-optical axis, 16-guide hole. DETAILED DESCRIPTION

[0013] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and examples. It should be noted that all other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0014] Example: See Figure 2 A structure for improving the alignment accuracy of the mold is located in the middle of the upper clamping plate 6. A guide hole 16 is opened in the middle of the upper clamping plate 6. The guide hole 16 consists of an upper outer hole and a lower inner hole whose central axes are on a straight line. The central axes of the two are on the same straight line. The optical axis 15 is installed through an equidistant sleeve 2. The nail body of the countersunk screw 15 extends into the upper mold seat 7. There is a clearance fit between the equidistant sleeve 2 and the upper clamping plate 6. Before the upper and lower molds are closed, the upper mold is in a relatively free state. The equidistant sleeve 2 can produce displacement in the guide hole 16, that is, the position of the guide column and guide sleeve 5 is adjusted according to the actual position of the guide column 4 on the lower mold when the upper and lower molds are closed, and then the actual alignment position of the upper mold is fine-tuned, thereby improving the mold closing accuracy.

[0015] See also Figure 1A mold using a structure for improving mold alignment accuracy, including an upper mold and a lower mold, the upper mold including an upper clamping plate 6, an upper mold base 7 fixed below the upper clamping plate 6, an upper fixed plate 8 and an upper pad 9 installed below the upper mold base, and also including a blanking punch 3 and a discharge plate 10 provided at the lower part thereof, an automatic guide structure composed of an optical axis 15 and an equidistant shaft sleeve 2 installed in the middle of the upper clamping plate 6, and a guide column and guide sleeve 5 installed on the upper mold base 7, the lower mold including a lower mold base 13 and a concave mold plate 12 installed thereon, and a guide column 4 fixed on one side of the concave mold plate, and the guide column 4 and the guide column and guide sleeve 5 are matched and arranged; the entire mold is installed between a slider 1 on a punch press and a lower table 11 of the punch press.

[0016] When the die is used to punch a thin plate, when the upper die is pressed down, the equidistant sleeve 2 can move in the guide hole 16 to fine-tune the position of the guide pin and guide sleeve 5, thereby improving the mold closing accuracy, thereby reducing the wear of the guide pin 4 during mold closing, thereby extending the service life of the die and improving the qualified rate of the finished thin plate.

[0017] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", "one side", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] 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 structure for improving mold alignment accuracy, characterized in that: The structure is located in the middle of the upper clamping plate (6), and a guide hole (16) is opened in the middle of the upper clamping plate (6). The guide hole (16) consists of an upper outer hole and a lower inner hole whose central axes are on a straight line. An optical axis (15) is installed in the inner hole through an equidistant shaft sleeve (2). The lower part of the optical axis (15) extends into the upper mold seat (7). There is a clearance fit between the equidistant shaft sleeve (2) and the upper clamping plate (6). When the upper and lower molds are closed, the equidistant shaft sleeve (2) can generate a displacement in the guide hole (16), that is, the horizontal position of the guide column and guide sleeve (5) is adjusted according to the actual position of the guide column (4) on the lower mold, thereby completing the fine adjustment of the horizontal position of the upper mold.

2. The structure according to claim 1, characterized in that: The guide hole (16) is a circular hole that passes through the entire upper mounting clamping plate (6).

3. The structure according to claim 1, characterized in that: The maximum displacement is 0.3 mm.

4. A die with a structure for improving die alignment accuracy as claimed in claim 1 is used for stamping of thin plate workpieces, comprising an upper die and a lower die, characterized in that: The upper die comprises an upper clamping plate (6), an upper die seat (7) fixed below the upper clamping plate (6), an upper fixing plate (8) and an upper pad (9) fixed below the upper die seat, a shearing punch (3) and a discharge plate (10) installed below the punch, an automatic guide structure composed of an optical axis (15) located in the middle of the upper clamping plate (6) and an equidistant shaft sleeve (2), and a guide column and guide sleeve (5) fixed on the upper die seat; the lower die comprises a lower die seat (13) and a concave die plate (12) installed thereon, and a guide column (4) arranged on one side of the die, wherein the guide column (4) and the guide column and guide sleeve (5) are arranged in a matching manner; the entire die is installed between a slider (1) on a punch press and a lower table (11) of the punch press.

Images