Quick switching mechanism for punching needle of punching die

Abstract

A rapid switching mechanism for punching needles of a punching die comprises an upper die base, an upper base plate and a punching needle fixing plate which are fixedly arranged in sequence, the punching needle fixing plate is provided with a first punching needle and a second punching needle which are used for punching of different machine types respectively, and the lower end of the first punching needle and the lower end of the second punching needle penetrate through the punching needle fixing plate and are movably connected with the punching needle fixing plate; side edge opening sliding grooves are formed in the positions, corresponding to the first punching needle and the second punching needle, of the upper base plate, limiting sliding blocks are slidably connected into the side edge opening sliding grooves, and receding grooves are formed in the sides, corresponding to the punching needle fixing plate, of the limiting sliding blocks; a switching fixing base is arranged on the outer side of an opening of the side edge opening sliding groove, the upper end of the switching fixing base is fixedly connected with the upper die base, and a bolt assembly is arranged on the switching fixing base and used for moving the position of the limiting sliding block to conduct limiting switching on the upper portion of the first punching needle and the upper portion of the second punching needle. According to the utility model, the clearance groove is arranged on the limiting slide block, and the punch pin is quickly switched by utilizing the clearance groove, so that the die does not need to be opened, the switching time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a punching die and punching needle quick switching mechanism. Background Art

[0002] The punch pin is an indispensable part of the stamping die. It is mainly used to directly contact and process the material on the press to separate or plastically deform the material to obtain the required parts.

[0003] At present, with the increasing personalization of electronic and electrical products, the same product often produces multiple models through local differential design. The most common situation is that one model of the product needs to be punched at a certain position, while another model of the product needs to be punched at another different position. In order to reduce the cost of the die, the processing machine is generally switched by replacing the punch needle on the die. However, this method requires the operator to open the mold, then disassemble the mold, take out the punch needles that do not need to be punched, and reinstall the punch needles that need to be punched. The labor cost is high, and the operation is cumbersome and inefficient.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to design a punch die and punch needle quick switching mechanism to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solution of the utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the utility model. Utility Model Content

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the utility model aims to disclose a punching die and punching needle quick switching mechanism for solving the problem of difficulty in switching the local punching needle of the die.

[0007] The utility model discloses a quick switching mechanism for a die and a needle, comprising an upper die seat, an upper pad and a needle fixing plate which are fixedly arranged in sequence, the needle fixing plate is provided with a first needle and a second needle which are used for punching of different types of machines respectively, the lower ends of the first needle and the second needle both pass through the needle fixing plate and are movably connected thereto; the upper pad plate is provided with a side opening slide groove at the corresponding positions of the first needle and the second needle, a limiting slider is slidably connected in the side opening slide groove, and a clearance groove is provided on the corresponding side of the limiting slider and the needle fixing plate; a switching fixing seat is provided on the outer side of the opening of the side opening slide groove, the upper end of the switching fixing seat is fixedly connected to the upper die seat, a bolt assembly is provided on the switching fixing seat, the bolt assembly is used for moving the position of the limiting slider to perform limit switching on the upper sides of the first needle and the second needle; when the clearance groove moves to the needle position, during the stamping process, since the needle and the needle fixing plate are movably connected, the contact force between the needle after the clearance and the product is extremely low, and it will be directly lifted up by the product, thereby completing the switching of the needle.

[0008] Preferred technical solution: When the limit slider slides to the bottom of the side opening slot, the air-avoiding groove is located above the first punch pin to release its up and down movement restriction; when the limit slider slides to the switching fixed seat, the second punch pin is completely separated from the limit slider to release the up and down movement restriction. The position of the air-avoiding groove is positioned at both ends of the limit slider's moving stroke, which reduces the difficulty of switching the air-avoiding groove and the punch pin.

[0009] Preferred technical solution: The bolt assembly includes a first bolt and a second bolt. The limit slider is provided with a threaded hole corresponding to the first bolt. The first bolt cooperates with the threaded hole to fix the air-avoiding groove above the first punch pin; the second bolt can push the limit slider against the bottom of the side opening slot. The limit slider can be adjusted by the bolt, which is easy to operate.

[0010] Preferred technical solution: The side wall of the air avoidance groove is a slope structure to avoid the problem of the air avoidance groove and the punching needle getting stuck during the switching process.

[0011] Optimal technical solution: The heads of the first punch needle and the second punch needle are both provided with hanging platforms, and the punch needle fixing plate is provided with hanging platform countersunk holes corresponding thereto, thereby improving the service life and reliability of the punch needles.

[0012] Due to the application of the above technical solution, the punching die and punching needle quick switching mechanism of the utility model has the following beneficial effects:

[0013] (1) An air-avoiding groove is set on the limit slider, and the air-avoiding groove is used to realize the rapid switching of the punching needle without opening the mold, thereby reducing the switching time and improving production efficiency;

[0014] (2) The slider is adjusted using bolts, which is easy to operate and less prone to errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a punching die and punching needle quick switching mechanism of the utility model;

[0016] Figure 2 This is an exploded view of a punch die and punch needle quick switching mechanism of the utility model;

[0017] Figure 3 This is a relative position diagram when the utility model switches to the first punching needle;

[0018] Figure 4 This is a relative position diagram when the utility model switches to the second punching needle.

[0019] In the above drawings, 1, upper die seat; 2, upper pad; 21, side opening slide groove; 3, punch pin fixing plate; 31, first punch pin; 32, second punch pin; 4, limit slider; 41, air avoidance groove; 42, threaded hole; 5, switching fixed seat; 51, bolt assembly; 51a, first bolt; 51b, second bolt. DETAILED DESCRIPTION

[0020] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0021] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 utility model. In addition, terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example:

[0024] like Figure 1 and Figure 2 As shown, a punching die and punching needle quick switching mechanism disclosed in the utility model includes an upper die base 1, an upper pad 2 and a punching needle fixing plate 3 which are fixedly arranged in sequence. The main components of the utility model mentioned above will be described in detail below:

[0025] like Figure 1 and Figure 2 As shown, the punch pin fixing plate 3 is provided with a first punch pin 31 and a second punch pin 32 respectively used for punching of different types of machines, the lower ends of the first punch pin 31 and the second punch pin 32 both pass through the punch pin fixing plate 3 and are movably connected thereto, the heads of the first punch pin 31 and the second punch pin 32 are both provided with hanging platforms, and the punch pin fixing plate 3 is provided with hanging platform countersunk holes corresponding thereto.

[0026] like Figure 1 and Figure 2 As shown, the upper pad 2 is provided with a side opening slide groove 21 at the corresponding positions of the first punching pin 31 and the second punching pin 32, and a limit slider 4 is slidably connected in the side opening slide groove 21.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a clearance groove 41 is provided on the side corresponding to the pin fixing plate 3 of the limit slider 4, and the side wall of the clearance groove 41 is a slope structure; a switching fixing seat 5 is provided on the outside of the opening of the side opening slide groove 21. When the limit slider 4 slides to the bottom of the side opening slide groove 21, the clearance groove 41 is located above the first pin 31 to release the restriction on its up and down movement; when the limit slider 4 slides to the switching fixing seat 5, the second pin 32 is completely separated from the limit slider 4 to release the restriction on its up and down movement.

[0028] like Figure 1 and Figure 2 As shown, the upper end of the switching fixed seat 5 is fixedly connected to the upper die seat 1, and the lower end is fixed to one side of the punch pin fixing plate 3; the switching fixed seat 5 is provided with a bolt assembly 51, and the bolt assembly 51 includes a first bolt 51a and a second bolt 51b, and the limiting slider 4 is provided with a threaded hole 42 corresponding to the first bolt 51a, and the first bolt 51a cooperates with the threaded hole 42 to fix the limiting slider 4 at the switching fixed seat 5; the second bolt 51b can press the limiting slider 4 against the bottom of the side opening slide 21. It should be noted that the above structure is only exemplary and not restrictive. In this embodiment, the two ends of the switching fixed seat 5 are respectively fixedly connected to the upper die seat 1 and the punch pin fixing plate 3; but in other embodiments, the switching fixed seat 5 can be connected only to the upper die seat 1 or the punch pin fixing plate 3.

[0029] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the principle and use method of a quick switching mechanism for a die and a punch needle of the utility model are described as follows: when the first punch needle 31 is needed, the second bolt 51b is unscrewed to avoid it, and the first bolt 51a and the threaded hole 42 are tightened to fix the limit slider 4 on the switching fixed seat 5, and the limit slider 4 is completely separated from the top of the second punch needle 32, so that the second punch needle 32 can move freely up and down and cannot punch the product. At the same time, the hanging platform of the first punch needle 31 is pressed into the hanging platform countersunk hole by the limiting slider 4, and the first punch needle 31 is used to punch the product; when the second punch needle 32 is needed, the first bolt 51a is unscrewed to avoid it, and the second bolt 51b is tightened to press the limit slider 4 against the bottom of the side opening slide groove 21, so that the air avoidance groove 41 is located above the first punch needle 31. The first punching needle 31 can move freely up and down, but cannot punch or cut the product. At the same time, the hanging platform of the second punching needle 32 is pressed into the hanging platform countersunk hole by the limiting slider 4, and the second punching needle 32 is used to punch or cut.

[0030] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A punching die and punching needle quick switching mechanism, comprising an upper die base (1), an upper pad (2) and a punching needle fixing plate (3) which are fixedly arranged in sequence, characterized in that: The punch pin fixing plate (3) is provided with a first punch pin (31) and a second punch pin (32), and the lower ends of the first punch pin (31) and the second punch pin (32) both pass through the punch pin fixing plate (3) and are movably connected thereto; the upper pad plate (2) is provided with a side opening slide groove (21) at the corresponding positions of the first punch pin (31) and the second punch pin (32), and a limit slider (4) is slidably connected in the side opening slide groove (21), and a clearance groove (41) is provided on the side corresponding to the limit slider (4) and the punch pin fixing plate (3); a switching fixed seat (5) is provided at the opening of the side opening slide groove (21), and the upper end of the switching fixed seat (5) is fixedly connected to the upper die seat (1), and a bolt assembly (51) is provided on the switching fixed seat (5), and the bolt assembly (51) is used to move the position of the limit slider (4) to switch the upper limit of the first punch pin (31) and the second punch pin (32).

2. A die punching needle quick switching mechanism according to claim 1, characterized in that: When the limit slider (4) slides to the bottom of the side opening slide groove (21), the clearance groove (41) is located above the first punch needle (31) to release the restriction on its up and down movement; when the limit slider (4) slides to the switching fixed seat (5), the second punch needle (32) is completely separated from the limit slider (4) to release the restriction on its up and down movement.

3. A die punching needle quick switching mechanism according to claim 2, characterized in that: The bolt assembly (51) comprises a first bolt (51a) and a second bolt (51b); a threaded hole (42) corresponding to the first bolt (51a) is provided on the limit slider (4); the first bolt (51a) cooperates with the threaded hole (42) to fix the air avoidance groove (41) above the first punch needle (31); the second bolt (51b) can press the limit slider (4) against the bottom of the side opening slide groove (21).

4. A die punching needle quick switching mechanism according to claim 3, characterized in that: The side wall of the air avoidance groove (41) is a slope structure.

5. A die punching needle quick switching mechanism according to claim 4, characterized in that: The heads of the first punch needle (31) and the second punch needle (32) are both provided with hanging platforms, and the punch needle fixing plate (3) is provided with hanging platform countersunk holes corresponding thereto.

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