Upper punching die capable of freely selecting punching needles

Abstract

The utility model relates to an upper punching die capable of freely selecting punching needles, which comprises an upper punching die body, the upper punching die body is divided into a mounting cavity and at least one punching needle, the mounting cavity is divided into a main body part and an auxiliary body part from left to right, and the inner bottom of the main body part is slidably connected with a cylindrical pushing piece through a first spring. A main punching needle is installed at the bottom of the cylinder pushing piece through a punching assembly, a first cavity and a second cavity are formed in the auxiliary body part, and punches are placed and installed in the first cavity and the second cavity. According to the utility model, the first cavity and the second cavity are arranged in the upper punching die body, and the punches which can be easily and quickly controlled to stretch out and retract are arranged in the first cavity and the second cavity, so that the redundant punches can be arranged at a plurality of positions and are matched with the main punching needle to form at least seven die groups; different punching requirements of different positions, different thicknesses and the like are effectively met, then the die does not need to be taken out and replaced, the time cost is controlled, and the multi-hole-site punching requirement of the inner-layer circuit board is efficiently met.

Description

Technical Field

[0001] The utility model belongs to the technical field of punching machines, and in particular relates to an upper punching die used in a punching machine. Background Art

[0002] Punching machines are mainly used to punch holes in the inner layer of PCBs after etching. The machine can punch out the relevant tool holes required for the subsequent process at one time, including positioning holes, rivet holes or pin holes, etc. In the punching machine, the punching mechanism is mainly the upper punch die. The common upper punch dies on the market can generally only match one punching position. This means that when the upper punch die encounters different punching positions or punching requirements of different thicknesses, the mold needs to be taken out and replaced, which is time-consuming and troublesome. Utility Model Content

[0003] The purpose of the utility model is to provide an upper punch die with a freely selectable punch pin to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an upper punch die with a freely selectable punch needle, comprising an upper punch die body, the upper punch die body is divided into an installation cavity and at least one punch needle, the installation cavity is divided into a main body and a sub-body from left to right, the bottom of the main body is slidably connected with a cylindrical push piece through a first spring, the bottom of the cylindrical push piece is installed with a main punch needle through a stamping assembly, the sub-body is provided with a first cavity and a second cavity, punches are placed and installed in the first cavity and the second cavity, an adjustment groove is provided in the middle of the punch, and a clamping ring is provided on the upper part of the punch.

[0005] Preferably, the first cavity and the second cavity are connected at the bottom with a T-shaped sliding cavity, and the T-shaped sliding cavity is divided into a vertical cavity and a horizontal cavity.

[0006] Preferably, the vertical cavity is connected to the bottom of the first cavity and the second cavity, and has a smaller diameter than the first cavity and the second cavity.

[0007] Preferably, the transverse cavity extends to the right to communicate with the auxiliary body, a hinge seat is installed on the right side of the auxiliary body, a twist rod is rotatably provided on the hinge seat, the twist rod passes through the transverse cavity, and cooperates with the adjustment groove through a connecting rod.

[0008] Preferably, a first limiting ring is fixedly provided at the bottom of the first cavity and the second cavity, and a second limiting ring is slidably provided at the top of the first limiting ring via a second spring.

[0009] Preferably, a mounting groove is provided on the top of the auxiliary body, a sealing plate is locked on the top of the mounting groove, and a PIN sliding key is slidably provided on the bottom of the sealing plate.

[0010] Preferably, the PIN sliding key is located above the first cavity and the second cavity respectively.

[0011] Preferably, a replacement cavity is symmetrically provided at the bottom of the auxiliary body, and the replacement cavity has an ejection hole.

[0012] Preferably, the stamping assembly is divided into a push rod and an L-shaped limiting groove, the push rod is arranged on the left side of the lower part of the cylindrical push piece, and the L-shaped limiting groove is opened on the left side of the main body.

[0013] Preferably, the bottom of the main body is connected to a base through a side groove, and the main punch is slidably connected to the side groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a first cavity and a second cavity in the upper punch body, and installs punches in the first cavity and the second cavity that can be easily and quickly controlled to extend and retract, so that redundant punches can be installed in multiple positions, and cooperate with the main punch needle to combine at least 7 types of mold groups, which can effectively adapt to different punching requirements of different positions and different thicknesses, and then there is no need to take out and replace the mold, which controls the time cost and efficiently completes the multi-hole punching requirements of the inner circuit board; and the two punches are installed separately, each with a corresponding removal component, so that the punches and punch needles in different positions can be freely selected, or even used in combination, thereby increasing the convenience and diversity of the use of the upper punch body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the auxiliary body part in the utility model;

[0018] Figure 4 It is an enlarged view of point a in the utility model;

[0019] Figure 5 It is a cross-sectional view of the auxiliary body of the utility model;

[0020] Figure 6 It is a cross-sectional view of the main body of the utility model.

[0021] Numbers in the figure: 1-upper punch body, 2-installation cavity, 3-main body, 4-auxiliary body, 5-first spring, 6-cylindrical push piece, 7-stamping assembly, 8-main punch needle, 9-first cavity, 10-second cavity, 11-punch, 121-adjustment groove, 122-clamp ring, 13-T-shaped sliding cavity, 131-vertical cavity, 132-transverse cavity, 14-hinge seat, 15-twist rod, 16-resist rod, 17-first limiting ring, 18-second spring, 19-second limiting ring, 20-installation groove, 21-sealing plate, 22-PIN sliding key, 23-replacement cavity, 24-ejection hole, 25-push rod, 26-L-shaped limiting groove, 27-side groove, 28-base. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] like Figures 1 to 6The upper punch die with a freely selectable punch needle shown in the figure comprises an upper punch die body 1, which is divided into an installation cavity 2 and at least one punch needle. The installation cavity 2 is divided into a main body 3 and a sub-body 4 from left to right. A cylindrical push piece 6 is slidably connected to the bottom of the main body 3 through a first spring 5. A main punch needle 8 is installed at the bottom of the cylindrical push piece 6 through a stamping assembly 7. A first cavity 9 and a second cavity 10 are opened in the sub-body 4. A punch 11 is placed and installed in the first cavity 9 and the second cavity 10. An adjustment groove 121 is provided in the middle of the punch 11, and a clamping ring 122 is provided on the upper part of the punch 11; a T-shaped sliding cavity 13 is connected to the bottom of the first cavity 9 and the second cavity 10, and the T-shaped sliding cavity 13 is divided into a vertical cavity 131 and a transverse cavity 132; the vertical cavity 131 is connected to the bottom of the first cavity 9 and the second cavity 10, and its diameter is smaller than that of the first cavity 9 and the second cavity 10; the transverse cavity 132 extends to the right and is connected to the sub-body 4, and a hinged Seat 14, a screw rod 15 is rotatably provided on the hinged seat 14, the screw rod 15 passes through the transverse cavity 132, and cooperates with the adjustment groove 121 through the connecting rod 16; a first limit ring 17 is fixedly provided at the bottom of the first cavity 9 and the second cavity 10, and a second limit ring 19 is slidably provided on the top of the first limit ring 17 through a second spring 18; a mounting groove 20 is provided at the top of the auxiliary body 4, a sealing plate 21 is locked at the top of the mounting groove 20, and a PIN sliding key 22 is slidably provided at the bottom of the sealing plate 21; the PIN sliding key 22 is respectively located above the first cavity 9 and the second cavity 10; a replacement cavity 23 is symmetrically provided at the bottom of the auxiliary body 4, and the replacement cavity 23 is provided with an ejection hole 24; the stamping assembly 7 is divided into a push rod 25 and an L-shaped limit groove 26, the push rod 25 is arranged on the lower left side of the cylindrical push piece 6, and the L-shaped limit groove 26 is opened on the left side of the main body 3; the bottom of the main body 3 is connected with a base 28 through a side groove 27, and the main punch pin 8 is slidably connected with the side groove 27.

[0025] The utility model arranges and installs a first cavity 9 and a second cavity 10 in the upper punch die body 1, and installs a punch 11 in the first cavity 9 and the second cavity 10, which can be easily and quickly controlled to extend and retract, so that redundant punches 11 can be installed in multiple positions, and cooperate with the main punch needle 8 to combine at least 7 types of die sets, which can effectively adapt to different punching requirements of different positions and different thicknesses, and then there is no need to take out and replace the mold, which controls the time cost and efficiently completes the multi-hole punching requirements of the inner layer circuit board; and the two punches 11 are installed separately, each with a corresponding removal component, so that the punches 11 and punch needles in different positions can be freely selected, or even used in combination, thereby increasing the convenience and diversity of the use of the upper punch die body 1.

[0026] Example 2

[0027] like Figures 1 to 6A kind of upper punching die with a freely selectable punching pin is shown, including an upper punching die body 1. The punching die is one of the key components in a punching machine and is generally divided into an upper die (upper punching die body 1) and a lower die. The two are fixed together by guide columns. During use, the shape and size of the punching die can be installed according to the punching requirements, so as to meet the requirements for holes of different sizes and shapes. Among them, the upper punching die body 1 is divided into an installation cavity 2 and at least one punching pin, that is, at least 1 punching pin is installed in the installation cavity 2 for punching the inner layer circuit board; it can also be installed with 2 or 3 punching pins, forming at least 7 die combinations for the selection operation of different punching positions.

[0028] Among them, the installation cavity 2 is divided into a main body part 3 and a secondary body part 4 from left to right. The main body part 3 is used to install the punching pin at the main position. The main body part 3 is provided with a circular groove extending downward from the top, and a cylindrical pusher 6 is connected to the bottom of the circular groove through a first spring 5, that is, the cylindrical pusher 6 is slidably arranged in the circular groove, and the cylindrical pusher 6 will protrude from the circular groove; a main punching pin 8 is installed at the eccentric position of the bottom of the cylindrical pusher 6. At the position below the main punching pin 8, the bottom of the main body part 3 is communicated with a base 28 through a side groove 27, that is, the base 28 and the bottom of the main body part 3 are both provided with side grooves 27 at the same position and the same size, so that the main punching pin 8 can pass through the main body part 3 and the base 28 and move movably in the side groove 27.

[0029] In the initial position, the lowest part of the main punching pin 8 will be located in the base 28 and will not protrude from the plane. When it is necessary to move the main punching pin 8 out of the upper punching die body 1 to cooperate with the corresponding lower die for punching, the cylindrical pusher 6 can be pushed downward to drive the main punching pin 8 to move downward and protrude from the base 28. At this time, the first spring 5 is compressed; then, the main punching pin 8 after moving downward can be fixed and limited by a stamping component 7. The stamping component 7 is divided into a push rod 25 and an L-shaped limit groove 26. The L-shaped limit groove 26 is opened at the lower left position of the main body part 3. The push rod 25 is arranged at the lower left part of the cylindrical pusher 6 and is slidably connected with the L-shaped limit groove 26. In the initial position, the push rod 25 will be located at the top of the L-shaped limit groove 26. Therefore, when the cylindrical pusher 6 moves downward to drive the main punching pin 8 to move downward, the push rod 25 will also be driven to move downward into the "one" of the L-shaped limit groove 26. Then, the user pushes the push rod 25 backward so that the push rod 25 is stuck in the L-shaped limit groove 26, indirectly completing the limit and fixation of the main punching pin 8 through the cylindrical pusher 6, avoiding the ineffective stamping action of the main punching pin 8 during punching. Among them, the function of the first spring 5 is: when the main punching pin 8 is not needed, the push rod 25 is pushed forward into the "|" of the L-shaped limit groove 26. At this time, neither the main punching pin 8 nor the cylindrical pusher 6 is fixed. The reset of the first spring 5 will drive the cylindrical pusher 6 to move upward and reset, and then drive all its upper components to reset, cooperating with the next operation.

[0030] Embodiment 3

[0031] like Figures 1 to 6 An upper punch die with a freely selectable punch needle is shown, and the right side of the main body 3 is the auxiliary body 4, and two chambers are opened in the auxiliary body 4, which are divided into a first cavity 9 and a second cavity 10, which can be used to install and select punch needles of different lengths to adapt to punching actions with different thickness requirements; at the same time, after the punch 11 is installed in the first cavity 9 and the second cavity 10, it can cooperate with the main punch needle 8 to realize a multifunctional punching operation according to different positions and by selecting punch needles in different positions.

[0032] A first limiting ring 17 is fixedly provided at the bottom of the first cavity 9 and the second cavity 10, and a second limiting ring 19 is connected to the top of the first limiting ring 17 through a second spring 18, that is, the second limiting ring 19 can slide up and down in the first cavity 9 and the second cavity 10, and the punch 11 passes through the second spring 18, so that the punch needle part passes through the first cavity 9 and the second cavity 10, and cooperates with the later removal action. Among them, a clamping ring 122 is provided on the upper part of the punch 11, and the diameter of the clamping ring 122 is between the first cavity 9 and the second limiting ring 19, and then the punch 11 placed in the first cavity 9 and the second cavity 10 along the second spring 18, after moving a certain distance, can be clamped on the second limiting ring 19 by the clamping ring 122; the height of the punch 11 itself is limited, and the specific setting height of the clamping ring 122 on the punch 11 can be changed accordingly with reference to the length of different punches 11 and the length required to protrude from the plane.

[0033] Furthermore, when it is necessary to selectively remove the punch 11 in the first cavity 9 or the second cavity 10 or both the first cavity 9 and the second cavity 10, the head of the corresponding punch 11 can be pushed downward; the two, together with the main punch needle 8, can be combined into at least 7 types of mold groups to adapt to different punching requirements of different positions, different thicknesses, etc.

[0034] Example 4

[0035] In Example 3, it is shown that "the punch 11 will be clamped on the second limiting ring 19 by the clamping ring 122, and then limited to the specified height in the first cavity 9 and the second cavity 10". When the punch 11 is needed, it is pressed downward until it protrudes from the plane. However, considering that the upper die body 1 has a certain thickness, it is not convenient to press down and move out the slightly shorter punch 11. Therefore, the following components are arranged on the right side of the auxiliary body 4, which are used to control the punch 11 after cooperation, so that the punch 11 can be easily pressed down and moved out.

[0036] A T-shaped sliding cavity 13 is connected at the bottom of the first cavity 9 and the second cavity 10, and the T-shaped sliding cavity 13 is divided into a vertical cavity 131 and a transverse cavity 132; the top of the vertical cavity 131 is connected to the first cavity 9 and the second cavity 10, and the diameter is smaller than the first cavity 9 and the second cavity 10, that is, the first limit ring 17 can be fixedly set on the bottom of the first cavity 9 and the second cavity 10 by being clamped on the vertical cavity 131; the vertical cavity 131 will directly pass through the bottom of the auxiliary body 4 so that the punch needle part of the punch 11 can be moved out of the auxiliary body 4. The transverse cavity 132 passes through the vertical cavity 131 and the right side of the auxiliary body 4, so a hinge seat 14 is provided at a corresponding position on the right side of the auxiliary body 4, and a twist rod 15 is rotatably provided on the hinge seat 14. The left part of the twist rod 15 is located in the transverse cavity 132, and a push rod 16 is provided at an eccentric position on the left side, that is, the user can rotate the twist rod 15 on the outside of the auxiliary body 4 to drive the internal push rod 16 to rotate, which is used to indirectly push the internal punch 11 out, which is easy and convenient. Correspondingly, an adjustment groove 121 is provided on one side of the middle part of the punch 11 close to the push rod 16. After installation, the push rod 16 will be located in the adjustment groove 121. At this time, the punch 11 is located in the sub-body 4. When the corresponding punch 11 needs to be moved out, the twisting rod 15 can drive the push rod 16 to rotate, and then the punch 11 is pressed against the adjustment groove 121 and moved downward to cooperate with the lower die to punch holes. It should be noted that when the punch 11 moves downward, the clamping ring 122 will drive the second limit ring 19 to move downward, and the second spring 18 will be compressed. After the user no longer needs the punch 11 in this position, the second spring 18 can drive the second limit ring 19 to move upward when the twisting rod 15 drives the push rod 16 to no longer press against the adjustment groove 121, thereby driving the second limit ring 19 to move upward, thereby driving the clamping ring 122 and the punch 11 to move upward and retract into the sub-body 4, which is easy and convenient.

[0037] Example 5

[0038] According to Example 4, "the user can rotate the screw rod 15 to drive the support rod 16 to rotate, and then adjust the groove 121 to support the punch 11 and move it downward, and cooperate with the lower die to punch holes." It can be seen that the screw rod 15 is not fixed and limited by the fixing part, and the second spring 18 at this time also has a reset force, that is, the punch 11 moving downward cannot be effectively limited, and thus cannot cooperate with the lower die to complete the punching work. Therefore, a mounting groove 20 is provided at the top of the auxiliary body 4, and a sealing plate 21 is locked on the top of the mounting groove 20. The sealing plate 21 can block and limit the top of the installed punch 11. The punch 11 in the initial state will protrude from the mounting groove 20 and be located below the sealing plate 21; a PIN sliding key 22 is also slidingly provided at the bottom of the sealing plate 21, and the PIN sliding key 22 is respectively located above the first cavity 9 and the second cavity 10, that is, the PIN sliding key 22 can move left and right in the sealing plate 21, and when it moves to the left, the top of the punch 11 can be limited for a second time, which is specifically manifested as: the rotation of the screw rod 15 drives the support rod 16 to rotate, and then the punch 11 is pressed against the downward movement of the punch 11 by adjusting the groove 121, and a certain gap is generated between the punch 11 and the sealing plate 21. At this time, the PIN sliding key 22 can be pushed to move left into the bottom of the sealing plate 21 to press against the downwardly moved punch 11, thereby completing the limitation of the punch 11 and cooperating with the punching action of the downwardly moved punch 11.

[0039] Example 6

[0040] like Figures 1 to 6 The upper punch die with a freely selectable punch needle shown in the figure is also symmetrically provided with a replacement cavity 23 at the bottom of the auxiliary body 4. The replacement cavity 23 is located below the punch 11, and can be used as a lower die cooperating with the punch 11. An ejection hole 24 is opened at the bottom of the replacement cavity 23. The size of the ejection hole 24 is consistent with the punch needle part of the punch 11, that is, the punch 11 can accurately complete the punching of the inner layer circuit board through the ejection hole 24, without replacing the relevant mold, reducing time cost, and easily and conveniently performing the punching action.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. An upper punch die with a freely selectable punch needle, comprising an upper punch die body (1), wherein the upper punch die body (1) is divided into a mounting cavity (2) and at least one punch needle, characterized in that: The installation cavity (2) is divided into a main body (3) and a secondary body (4) from left to right. The bottom of the main body (3) is slidably connected to a cylindrical push piece (6) via a first spring (5). The bottom of the cylindrical push piece (6) is installed with a main punch needle (8) via a punch assembly (7). The secondary body (4) is provided with a first cavity (9) and a second cavity (10). A punch (11) is placed and installed in the first cavity (9) and the second cavity (10). An adjustment groove (121) is provided in the middle of the punch (11), and a clamping ring (122) is provided on the upper part of the punch (11).

2. An upper punch die with freely selectable punch pins according to claim 1, characterized in that: The bottoms of the first cavity (9) and the second cavity (10) are connected to a T-shaped sliding cavity (13), and the T-shaped sliding cavity (13) is divided into a vertical cavity (131) and a horizontal cavity (132).

3. An upper punch die with freely selectable punch pins according to claim 2, characterized in that: The vertical cavity (131) is connected to the bottom of the first cavity (9) and the second cavity (10), and has a smaller diameter than the first cavity (9) and the second cavity (10).

4. An upper punch die with freely selectable punch pins according to claim 2, characterized in that: The transverse cavity (132) extends rightwards and communicates with the auxiliary body (4). A hinge seat (14) is installed on the right side of the auxiliary body (4). A twist rod (15) is rotatably provided on the hinge seat (14). The twist rod (15) passes through the transverse cavity (132) and cooperates with the adjustment groove (121) through a connecting rod (16).

5. The upper punch die with freely selectable punch pins according to claim 3, characterized in that: A first limiting ring (17) is fixedly provided at the bottom of the first cavity (9) and the second cavity (10), and a second limiting ring (19) is slidably provided at the top of the first limiting ring (17) via a second spring (18).

6. The upper punch die with freely selectable punch pins according to claim 1, characterized in that: A mounting groove (20) is provided at the top of the auxiliary body (4), a sealing plate (21) is locked at the top of the mounting groove (20), and a PIN sliding key (22) is slidably provided at the bottom of the sealing plate (21).

7. An upper punch die with freely selectable punch pins according to claim 6, characterized in that: The PIN sliding key (22) is located above the first cavity (9) and the second cavity (10) respectively.

8. The upper punch die with freely selectable punch pins according to claim 1, characterized in that: A replacement cavity (23) is symmetrically provided at the bottom of the auxiliary body (4), and an ejection hole (24) is opened in the replacement cavity (23).

9. The upper punch die with freely selectable punch pins according to claim 1, characterized in that: The punching assembly (7) is divided into a push rod (25) and an L-shaped limiting groove (26), wherein the push rod (25) is arranged on the left side of the lower part of the cylindrical push piece (6), and the L-shaped limiting groove (26) is opened on the left side of the main body (3).

10. The upper punch die with freely selectable punch pins according to claim 1, characterized in that: The bottom of the main body (3) is connected to a base (28) through a side groove (27), and the main punch needle (8) is slidably connected to the side groove (27).

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