A punch assembly with precise positioning function

Abstract

The utility model belongs to the technical field of die punches, and specifically relates to a punch assembly with a precise positioning function, comprising a graphite boat, comprising an upper punch and a lower punch which are parallelly and oppositely distributed in the upper and lower directions, and is characterized in that a guide column is interspersed between the upper punch and the lower punch, and a through hole which is coaxial with the guide column is provided inside the upper punch, wherein the guide column is arranged in a cylindrical shape, and its purpose is that, through the arrangement of the guide column, the upper punch will make axial movement in a fixed direction along the guide column when being lifted or pressed down, so as to avoid the shaking and deviation of the upper punch during the lifting and lowering process, and by arranging scale rings with equal spacing on the guide column, the staff can more intuitively grasp the pressing height of the upper punch, so that the upper punch can be accurately punched onto workpieces of different heights according to requirements, and it is not easy to cause damage to the upper punch due to over-punching.

Description

Technical Field

[0001] The utility model belongs to the technical field of die punches, and in particular relates to a punch assembly with a precise positioning function. Background Art

[0002] The punch, also called the male die or the male die, is a metal part installed on the stamping die. It is used for direct contact with the material to deform and cut the material. It is installed on the stamping die to perform continuous blanking and cutting operations to separate or plastically deform the processed material, thereby obtaining the required finished product or semi-finished product.

[0003] In the prior art, the punch of the mold is usually divided into an upper punch and a lower punch. The lower punch is fixed on the processing table at the bottom of the mold, and the upper punch is fixed on the press at the top of the mold. Therefore, the existing mold punches are mostly split structures, lacking a protective structure for the punches. When in use, the punches will be exposed to the outside, resulting in the position of the punches being offset during the stamping process, causing damage to the punches and changes in the stamping angle, thereby shortening the service life of the punches and reducing the stamping quality of the finished product. Utility Model Content

[0004] In view of this, the utility model provides a punch assembly with a precise positioning function, the purpose of which is to enable the upper punch to make axial movement in a fixed direction along the guide column when being lifted or pressed down, through the setting of the guide column, so as to avoid the shaking and deviation of the upper punch during the lifting and lowering process. By setting scale rings with equal spacing on the guide column, the staff can more intuitively grasp the pressing height of the upper punch, so that the upper punch can be accurately punched onto workpieces of different heights according to requirements, and it is not easy for the upper punch to be damaged due to over-punching.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A punch assembly with a precise positioning function comprises an upper punch and a lower punch which are arranged in parallel and opposite relation to each other, a guide column is inserted between the upper punch and the lower punch, and a through hole which is coaxial with the guide column is provided inside the upper punch, wherein the guide column is arranged in a cylindrical shape, and an axial end face of the guide column is fixed inside the lower punch, and the other axial end face of the guide column is movably inserted in the through hole of the upper punch, and a plurality of scale rings are provided on the surface of the guide column body located inside the through hole, and the spacing between the scale rings is equal.

[0007] As a preferred technical solution, the two openings of the through hole extend to the bottom and the top of the upper punch respectively, and the inside of the openings are provided with a jacket, which is cylindrical.

[0008] Furthermore, the jacket comprises a connecting plate, a clamping ring and a wear-resistant layer, wherein the wear-resistant layer is laid on the inner wall of the clamping ring, and the connecting plate is arranged at an opening of the jacket close to the bottom or top of the upper punch.

[0009] Furthermore, a buffer component is provided on the surface of the lower punch facing the upper punch, and the guide column is fixed to the lower punch by inserting the buffer component.

[0010] Furthermore, the buffer assembly includes a buffer plate, a spring and a fixed plate which are sequentially distributed from top to bottom, wherein the fixed plate is fixedly connected to the lower punch, and the spring is connected between the buffer plate and the fixed plate.

[0011] Furthermore, the buffer plate and the fixing plate are both provided with perforations.

[0012] Furthermore, the wear-resistant layer is made of polyethylene material.

[0013] Furthermore, the through hole and the clamp ring are located in the same axial direction, and the inner diameters of the through hole and the clamp ring are equal in length.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] By setting the guide column, the upper punch will make axial movement in a fixed direction along the guide column when being lifted or pressed down, so as to avoid the shaking and deviation of the upper punch during the lifting and lowering process.

[0016] By setting scale rings with equal spacing on the guide column, the staff can more intuitively grasp the pressing height of the upper punch, so that the upper punch can be accurately punched onto workpieces of different heights as required, and it is not easy to cause damage to the upper punch due to over-punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of a punch assembly with a precise positioning function provided by the utility model;

[0019] Figure 2 It is a structural schematic diagram of the buffer assembly provided by the utility model;

[0020] Figure 3 It is a structural schematic diagram of the guide column provided by the utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of the upper punch provided by the utility model;

[0022] Figure 5 It is a structural schematic diagram of the jacket provided by the utility model.

[0023] Upper punch-1; lower punch-2; guide column-3; buffer assembly-4; buffer plate-5; perforation-6; fixing plate-7; spring-8; scale ring-9; through hole-10; jacket-11; connecting plate-12; clamping ring-13; wear-resistant layer-14. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1: In the prior art, the punch of the mold is usually divided into an upper punch and a lower punch. The lower punch is fixed on the processing table at the bottom of the mold, while the upper punch is fixed on the press at the top of the mold. Therefore, the existing mold punches mostly adopt a split structure and lack protection measures for the punches. During use, the punch is exposed to the outside, resulting in the position of the punch being offset during the stamping process, which in turn damages the punch and changes the stamping angle, thereby shortening the service life of the punch and reducing the stamping quality of the finished product.

[0026] Therefore, in order to solve the problem that the existing punch lacks a protective structure, the punch will be exposed during use, resulting in the position of the punch being offset during the stamping process, causing damage to the punch and changing the stamping angle, and to achieve the function of adding a stamping guide to the punch so that the punch can be accurately positioned during stamping, the utility model discloses a punch assembly with a precise positioning function, refer to Figure 1 , Figure 3 and Figure 4 , comprising an upper punch 1 and a lower punch 2 which are arranged in parallel and opposite relation to each other, a guide post 3 is inserted between the upper punch 1 and the lower punch 2, and a through hole 10 which is coaxial with the guide post 3 is provided inside the upper punch 1, wherein the guide post 3 is arranged in a cylindrical shape, and one axial end face of the guide post 3 is fixed inside the lower punch 2, and the other axial end face of the guide post 3 is movably inserted in the through hole 10 of the upper punch 1, and a plurality of scale rings 9 are provided on the surface of the body of the guide post 3 located inside the through hole 10, and the intervals between the scale rings 9 are equal;

[0027] Working principle: by setting the guide column 3, the upper punch 3 will make axial movement in the vertical direction along the guide column 3 during stamping. At this time, the guide column 3 can play a guiding role, so that the upper punch 1 will not deviate or shake during lifting and lowering. Secondly, by setting equal-spaced scale rings 9 on the guide column 3, the staff can more intuitively grasp the pressing height of the upper punch 1, so that the upper punch 1 can be accurately stamped onto workpieces of different heights as required, and it is not easy for the upper punch 1 to be damaged due to over-stamping.

[0028] When in use: In the initial state, the guide column 3 is vertically fixed on the lower punch 2, and the upper punch 1 and the lower punch 2 are separated. When the upper punch 1 and the lower punch 2 need to be assembled, the operator can use an external crane to lift the upper punch 1 and move it above the lower punch 2 and the guide column 3, and then slowly lower the through hole 10 in the upper punch 1 along the guide column 3 by the crane, so that the upper punch 1 and the lower punch 2 can fit together, and then connect the top of the upper punch 1 to the press. When the material to be punched needs to be placed, The press lifts the upper punch 1 along the guide column 3, and then the operator can place the material on the lower punch 2 and control the press to drive the upper punch 1 to press down. In the above process, due to the setting of the guide column 3, the upper punch 1 will make axial movement in a fixed direction along the guide column 3 when being lifted or pressed down, which plays a role in avoiding the shaking and deviation of the upper punch 1 during the lifting process. At the same time, the operator can start and stop the press by observing the scale ring 9, so that the upper punch 1 can be pressed down to the specified height.

[0029] In this embodiment, optionally, the upper punch 1 is provided with a lifting ring around its periphery for easy connection with a crane.

[0030] Embodiment 2: Based on the embodiment 1, the guide pillar 3 will rub against the inner wall of the through hole 10 as the upper punch 1 continues to punch, which may easily cause wear between the guide pillar 3 and the inner wall of the through hole 10 and cause shaking. Therefore, in order to reduce the loss of the guide pillar 3, improve the clamping effect of the through hole 10 on the guide pillar 3, and further improve the stability of the upper punch 1 during continuous punching, refer to Figure 4-Figure 5 The utility model also discloses a punch assembly with a precise positioning function, including a clamping ring 13 for clamping a guide column 3 and a wear-resistant layer 14 for reducing the friction of the guide column 3. Specifically, the two openings of the through hole 10 extend to the bottom and the top of the upper punch 1 respectively, and the insides of the openings are provided with a jacket 11, the jacket 11 is cylindrical, and the jacket 11 includes a connecting plate 12, a clamping ring 13 and a wear-resistant layer 14, wherein the wear-resistant layer 14 is laid on the inner wall of the clamping ring 13, and the connecting plate 12 is arranged at the opening of the jacket 11 close to the bottom or the top of the upper punch 1.

[0031] Working principle: By setting the sleeve 11, the guide column 3 can be clamped in the clamp ring 13 and will not directly contact the through hole 10. Then, the wear-resistant layer 14 inside the clamp ring 13 can reduce the friction between the guide column 3 and the clamp ring 13, which helps to avoid wear of the guide column 3 or the through hole 10. At the same time, the clamp ring 13 can improve the clamping effect of the guide column 3, further improving the stability of the upper punch 1 during continuous stamping.

[0032] During use: Before assembling the upper punch 1 and the lower punch 2, the operator can first insert the jacket 11 into the two openings of the through hole 10, and fix the jacket 11 in the through hole 10 through the connecting plate 12, and then lift the upper punch 1 and move it above the lower punch 2 and the guide column 3 through the process described in Example 1, and align the clamp ring 13 with the guide column 3 at the same time, so that the guide column 3 can pass through the jacket 11 in the two openings of the through hole 10.

[0033] In this embodiment, the wear-resistant layer 14 is made of polyethylene material, so as to reduce the friction and further improve the clamping effect on the guide pillar 3.

[0034] In this embodiment, preferably, screw holes are provided on the plate body of the connecting plate 12, and the operator can fix the connecting plate 12 to the upper and lower sides of the upper punch 1 by screws, so that when installing the jacket 11, the operator can first insert the side of the jacket 11 without the connecting plate 12 into the through hole 10, and continue to push the jacket 11 until the connecting plate 12 fits with the upper punch 1, and then fix the connecting plate 12 on the upper punch 1 by screws, so as to fix the jacket 11 in the through hole 10. When the jacket 11 needs to be removed, it is only necessary to reverse the above process.

[0035] In the above embodiment, when the jacket 11 is inserted into the through hole 10 , the outer wall of the jacket 11 fits with the inner wall of the through hole 10 .

[0036] In this embodiment, the inner diameter of the clamp ring 13 and the end diameter of the guide pillar 3 are both smaller than the inner diameter of the through hole 10 .

[0037] Embodiment 3: On the basis of Embodiment 1 and Embodiment 2, when the upper punch 1 is pressed against the lower punch 1 by the press, in order to reduce the impact force generated when the upper punch 1 contacts the lower punch 2 and realize the function of protecting the upper punch 1 and the lower punch 2, refer to Figure 1-Figure 2 The utility model also discloses a punch assembly with a precise positioning function, including a buffer assembly 4 for reducing the impact force of the upper punch 1. Specifically, the surface of the lower punch 2 facing the upper punch 1 is provided with a buffer assembly 4, and the guide column 3 is fixed to the lower punch 2 by inserting the buffer assembly 4.

[0038] Working principle: Through the setting of the buffer component 4, the upper punch 1 will first contact the buffer plate 5 when pressing down toward the lower punch 2, and then the buffer plate 5 can buffer part of the impact force through the spring 8, so that the lower punch 1 will not directly collide with the lower punch 2 when pressing down, thereby protecting the upper and lower punches. Then the press can continue to apply pressure so that the upper punch 1 can slowly fit on the lower punch 2.

[0039] During use: the operator can insert the buffer assembly 4 from the top of the guide column 3 and slide it down onto the lower punch 2, and make the fixing plate 7 fit with the lower punch 2, with the buffer plate 5 facing upward, and then fix the fixing plate 7 to the lower punch 2 with the fixing screws to complete the installation of the buffer assembly 4.

[0040] In this embodiment, preferably, the buffer assembly 4 includes a buffer plate 5, a spring 8 and a fixed plate 7 which are sequentially distributed from top to bottom, wherein the fixed plate 7 is fixedly connected to the lower punch 1, and the spring 8 is connected between the buffer plate 5 and the fixed plate 7.

[0041] In this embodiment, the buffer plate 5 and the fixing plate 7 are both provided with through holes 6 , through which the buffer assembly 4 can pass through the top of the guide pillar 3 .

[0042] In the above embodiment, the inner diameters of the through hole 6 and the clamp ring 13 are equal in length, and the through hole 6 and the clamp ring 13 are located in the same vertical direction.

[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A punch assembly with a precise positioning function, comprising an upper punch (1) and a lower punch (2) arranged in parallel and opposite relation, characterized in that: A guide column (3) is inserted between the upper punch (1) and the lower punch (2), and a through hole (10) coaxially corresponding to the guide column (3) is provided inside the upper punch (1), wherein the guide column (3) is arranged in a cylindrical shape, and one axial end face of the guide column (3) is fixed inside the lower punch (2), and the other axial end face of the guide column (3) is movably inserted into the through hole (10) of the upper punch (1), and a plurality of scale rings (9) are provided on the surface of the column body of the guide column (3) located inside the through hole (10), and the spacing between the scale rings (9) is equal.

2. A punch assembly with precise positioning function according to claim 1, characterized in that: The two openings of the through hole (10) extend to the bottom and top of the upper punch (1) respectively, and a jacket (11) is provided inside the openings, and the jacket (11) is cylindrical.

3. A punch assembly with precise positioning function according to claim 2, characterized in that: The jacket (11) comprises a connecting plate (12), a clamping ring (13) and a wear-resistant layer (14), wherein the wear-resistant layer (14) is laid on the inner wall of the clamping ring (13), and the connecting plate (12) is arranged at an opening of the jacket (11) close to the bottom or top of the upper punch (1).

4. The punch assembly with precise positioning function according to claim 1, characterized in that: A buffer component (4) is provided on the surface of the lower punch (2) facing the upper punch (1), and the guide column (3) is fixed to the lower punch (2) by inserting the buffer component (4).

5. The punch assembly with precise positioning function according to claim 4, characterized in that: The buffer assembly (4) comprises a buffer plate (5), a spring (8) and a fixed plate (7) which are arranged in sequence from top to bottom, wherein the fixed plate (7) is fixedly connected to the lower punch (2), and the spring (8) is connected between the buffer plate (5) and the fixed plate (7).

6. The punch assembly with precise positioning function according to claim 5, characterized in that: The buffer plate (5) and the fixing plate (7) are both provided with perforations (6).

7. The punch assembly with precise positioning function according to claim 3, characterized in that: The wear-resistant layer (14) is made of polyethylene material.

8. The punch assembly with precise positioning function according to claim 6, characterized in that: The through hole (6) and the clamping ring (13) are located in the same axial direction, and the inner diameters of the through hole (6) and the clamping ring (13) are equal in length.

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