A porous positioning type upper die mechanism for a punching machine

Abstract

The present invention discloses a multi-hole positioning type upper die mechanism for a punching machine, which comprises an upper die base. A transverse sliding groove is formed at the bottom of the upper die base. A punch needle base is arranged in the transverse sliding groove. A positioning plate is fixed in the transverse sliding groove. A plurality of positioning holes are formed in the positioning plate and extend along the length direction of the transverse sliding groove. A vertically arranged positioning column is inserted through the punch needle base and the two are in sliding fit. A positioning pin capable of being inserted and matched with the positioning hole is formed at the top of the positioning column. A spring is arranged at the bottom of the positioning column. A vertically movable pull rod is inserted through the side of the punch needle base. One end of the pull rod is inserted into the side of the positioning column, and the other end of the pull rod extends outward from the punch needle base. When the pull rod is toggled downward, the positioning column is driven to move downward so that the positioning pin is separated from the positioning hole. The present invention helps to achieve rapid and accurate positioning of the punch needle position, can meet the requirements of high-precision machining and prevent workpiece scrapping.

Description

Technical Field

[0001] The present invention relates to a punching machine, and more particularly to a multi-hole positioning upper die mechanism for a punching machine. Background Art

[0002] In the prior art, the PCB board punching processing equipment generally consists of a lower die mechanism and an upper die mechanism. The lower die mechanism is used to carry and position the PCB board, and the upper die mechanism is used to carry the punching needles. Since the punching positions on different PCB boards are different, before punching processing, generally, the translation and positioning adjustment of the punching needles are involved. The existing adjustment method is to slide the punching needle seat to the specified position and then position the punching needle seat at this position. This adjustment method lacks the precise positioning function, resulting in insufficient positioning accuracy of the punching needles, unable to meet the requirements of high-precision punching processing, and it is easy to cause situations such as workpiece scrapping. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a multi-hole positioning upper die mechanism for a punching machine that helps to quickly and precisely position the punching needle, can meet the requirements of high-precision processing, and prevent workpiece scrapping in view of the deficiencies of the prior art.

[0004] To solve the above technical problem, the present invention adopts the following technical solutions.

[0005] A multi-hole positioning upper die mechanism for a punching machine includes an upper die base. A transverse chute is formed at the bottom of the upper die base. A punching needle seat is arranged in the transverse chute and the two are in sliding fit. A positioning plate is fixed in the transverse chute. A plurality of positioning holes are formed in the positioning plate and extend along the length direction of the transverse chute. A vertically arranged positioning column is penetrated through the punching needle seat and the two are in sliding fit. A positioning pin capable of being inserted into and mating with the positioning hole is formed at the top of the positioning column. A spring is arranged at the bottom of the positioning column. The elastic force applied by the spring drives the positioning column to rise so that the positioning pin is inserted into the positioning hole at the corresponding position. A vertically movable pull rod is penetrated through the side of the punching needle seat. One end of the pull rod is inserted into the side of the positioning column, and the other end of the pull rod extends to the outside of the punching needle seat. When the pull rod is pulled downwards, the positioning column is driven to move downwards so that the positioning pin is separated from the positioning hole.

[0006] Preferably, two upper die pressing plates are fixed at the bottom of the upper die base. Lateral chutes are respectively formed on both sides of the punching needle seat. The edges of the two upper die pressing plates are respectively clamped in the two lateral chutes, and the upper die pressing plates are in sliding fit with the lateral chutes.

[0007] Preferably, a fixing seat is arranged at the bottom of the punching needle seat. The fixing seat is located below the positioning column, and the spring is clamped between the positioning column and the fixing seat.

[0008] Preferably, an induction switch base is installed at the bottom of the fixed base. An induction switch is arranged inside the induction switch base. The triggering end of the induction switch is arranged opposite to the bottom of the positioning post. When the pull rod drives the positioning post to move downward, the positioning post triggers the induction switch to generate an electrical signal.

[0009] Preferably, two vertically arranged punch pins are fixed on the punch pin base.

[0010] Preferably, lateral cutting surfaces are respectively formed on both sides of the positioning pin.

[0011] Preferably, a round head handle is formed at the end of the pull rod.

[0012] In the multi-hole positioning type upper die mechanism for a punching machine disclosed by the present invention, a positioning plate with a plurality of positioning holes is arranged inside the transverse sliding groove. At the same time, a positioning post that can move up and down is arranged on the punch pin base. When a user needs to adjust the transverse position of the punch pin base, only need to press down the pull rod, so that the pull rod drives the positioning post to move downward, and the positioning pin is separated from the positioning hole. At this time, the punch pin base can slide freely along the transverse sliding groove. When the transverse sliding groove slides to a corresponding position, the elastic force applied by the spring is used to drive the positioning post to rise, so that the positioning pin is inserted into the positioning hole at the corresponding position, thereby positioning the punch pin base in the transverse sliding groove. Based on the above principle, it can be seen that the present invention realizes the rapid adjustment and precise positioning of the position of the punch pin base, preferably meets the requirements of high-precision processing, and can effectively prevent the occurrence of situations such as workpiece scrapping. Description of the Drawings

[0013] Figure 1 is a perspective view of the upper die mechanism of the punching machine;

[0014] Figure 2 is the decomposition of the upper die mechanism of the punching machine Figure 1 ;

[0015] Figure 3 is the decomposition of the upper die mechanism of the punching machine Figure 2 ;

[0016] Figure 4 is Figure 3 the enlarged view of part A in

[0017] Figure 5 is the structure of the punch pin and the punch pin base Figure 1 ;

[0018] Figure 6 is the structure of the punch pin and the punch pin base Figure 2 . Detailed Embodiments

[0019] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0020] Embodiment 1

[0021] This embodiment proposes a porous positioning upper die mechanism for a punching machine. As shown in combination with Figures 1 to 6 the figure, it includes an upper die base 1. A horizontal sliding groove 10 is formed at the bottom of the upper die base 1. A punch needle base 2 is arranged in the horizontal sliding groove 10 and the two are in sliding fit. A positioning plate 11 is fixed in the horizontal sliding groove 10. A plurality of positioning holes 12 are formed on the positioning plate 11. The plurality of positioning holes 12 extend along the length direction of the horizontal sliding groove 10. A vertically arranged positioning column 3 is penetrated through the punch needle base 2 and the two are in sliding fit. A positioning pin 30 capable of being inserted and matched with the positioning hole 12 is formed at the top of the positioning column 3. A spring is arranged at the bottom of the positioning column 3. The elastic force applied by the spring drives the positioning column 3 to rise so that the positioning pin 30 is inserted into the positioning hole 12 at the corresponding position. A vertically movable pull rod 4 is penetrated through the side of the punch needle base 2. One end of the pull rod 4 is inserted into the side of the positioning column 3. The other end of the pull rod 4 extends to the outside of the punch needle base 2. When the pull rod 4 is toggled downward, the positioning column 3 is driven to move downward so that the positioning pin 30 is separated from the positioning hole 12.

[0022] In the above structure, a positioning plate 11 with a plurality of positioning holes 12 is arranged inside the horizontal sliding groove 10. At the same time, a vertically movable positioning column 3 is arranged on the punch needle base 2. When the user needs to adjust the horizontal position of the punch needle base 2, only need to press down the pull rod 4 so that the pull rod 4 drives the positioning column 3 to move downward and the positioning pin 30 is separated from the positioning hole 12. At this time, the punch needle base 2 can slide freely along the horizontal sliding groove 10. When the horizontal sliding groove 10 slides to the corresponding position, the elastic force applied by the spring drives the positioning column 3 to rise so that the positioning pin 30 is inserted into the positioning hole 12 at the corresponding position, thereby positioning the punch needle base 2 in the horizontal sliding groove 10. Based on the above principle, it can be seen that the present invention realizes the rapid adjustment and precise positioning of the position of the punch needle base, better meets the requirements of high-precision processing, and can effectively prevent the occurrence of situations such as workpiece scrapping.

[0023] In order to limit the punch needle base 2, in this embodiment, two upper die pressing plates 5 are fixed at the bottom of the upper die base 1. Lateral sliding grooves 20 are respectively formed on both sides of the punch needle base 2. The edges of the two upper die pressing plates 5 are respectively clamped in the two lateral sliding grooves 20, and the upper die pressing plates 5 are in sliding fit with the lateral sliding grooves 20.

[0024] As a preferred structure, a fixing base 21 is provided at the bottom of the punch pin seat 2. The fixing base 21 is located below the positioning post 3, and the spring is clamped between the positioning post 3 and the fixing base 21.

[0025] Further, an induction switch seat 22 is installed at the bottom of the fixing base 21. An induction switch is provided inside the induction switch seat 22. The triggering end of the induction switch is disposed opposite to the bottom of the positioning post 3. When the pull rod 4 drives the positioning post 3 to move downward, the positioning post 3 triggers the induction switch to generate an electrical signal.

[0026] In the above structure, when the user presses the pull rod 4, the induction switch can be triggered. The controller of the punching machine can judge the sliding / positioning state of the punch pin seat 2 according to the electrical signal sent by the induction switch, so as to facilitate the execution of other corresponding controls.

[0027] Further, two vertically arranged punch pins 6 are fixed on the punch pin seat 2.

[0028] In order to facilitate the insertion and cooperation with the positioning hole, in this embodiment, lateral cutting surfaces 31 are respectively formed on both sides of the positioning pin 30.

[0029] In order to facilitate manual operation, in this embodiment, a round head handle 40 is formed at the end of the pull rod 4.

[0030] Embodiment Two

[0031] In practical applications, the upper die seat mechanism of the punching machine generally has a transverse sliding groove opened at the bottom of the upper die seat. Then, the punch pin seat is placed in the transverse sliding groove to ensure their sliding fit. However, since the relative side surfaces of the two are in contact with each other, the contact position will touch during sliding, resulting in relatively large friction, which not only affects the sliding performance of the punch pin seat, but also causes wear of the upper die seat and the punch pin seat, thus affecting the overall performance of the equipment.

[0032] In view of this, this embodiment proposes a pneumatic floating sliding type upper die mechanism of a punching machine that can reduce the friction between the punch pin seat and the upper die seat, thereby improving the service life and overall performance. Combined with Figures 1 to 4 As shown, it includes an upper die seat 1. A transverse sliding groove 10 is opened at the bottom of the upper die seat 1. A punch pin seat 2 is provided in the transverse sliding groove 10 and they are in sliding fit. An air duct 23 for injecting compressed air is opened in the punch pin seat 2. A plurality of air holes 24 are respectively opened on both sides of the punch pin seat 2. The air holes 24 communicate with the air duct 23. The compressed air injected into the air duct 23 is ejected outward through the plurality of air holes 24 and fills the gap between the punch pin seat 2 and the transverse sliding groove 10.

[0033] In the above mechanism, an air passage 23 is provided in the punch needle base 2. When it is necessary to adjust the lateral position of the punch needle base 2, compressed air can be injected into the air passage 23, and the compressed air is ejected through the air holes 24 on both sides of the punch needle base 2. The gap between the punch needle base 2 and the lateral sliding groove 10 is filled with air, so that the punch needle base 2 is in an air-floating state. In this state, when the punch needle base 2 is pushed or pulled, the friction between the punch needle base 2 and the lateral sliding groove 10 can be effectively reduced. Compared with the prior art, the present invention greatly reduces the friction between the punch needle base and the upper die base, and effectively improves the service life and overall performance of the equipment.

[0034] In order to further reduce the contact surface between the punch needle base and the upper die base, in this embodiment, two mutually parallel lateral step grooves 13 are provided on the inner side wall of the lateral sliding groove 10.

[0035] Correspondingly, a vertical step groove 25 is provided on the outer side wall of the punch needle base 2.

[0036] As a preferred method, a positioning plate 11 is fixed in the lateral sliding groove 10, a positioning column 3 for plugging and cooperating with the positioning plate 11 is inserted through the punch needle base 2, the positioning column 3 can move up and down relative to the punch needle base 2, a fixing seat 21 is installed at the bottom of the punch needle base 2, an induction switch seat 22 is installed at the bottom of the fixing seat 21, an induction switch is provided in the induction switch seat 22, and the triggering end of the induction switch is arranged opposite to the bottom of the positioning column 3. When the positioning column 3 moves downward, the positioning column 3 triggers the induction switch to generate an electrical signal, and the controller of the punching machine controls the air passage 23 to be connected to the air source of the compressed air according to this electrical signal.

[0037] Based on the electrical signal emitted by the induction switch, when the user drives the positioning column 3 to separate from the positioning plate 11, the controller of the punching machine can automatically control the air passage 23 to be connected to the air source, thereby realizing the automatic control of the on-off state of the compressed air, and preferably meeting the automatic supply requirements of the compressed air.

[0038] In order to facilitate the connection of the air source, in this embodiment, an end cover 26 is fixed to the end of the punch needle base 2 and they are sealed and matched. The end cover 26 covers the opening of the air passage 23, and an air source connector 27 is provided on the end cover 26.

[0039] Embodiment Three

[0040] In practical applications, in order to hold the punch pin and drive it to translate, the punch pin needs to be installed on the punch pin seat. The existing installation method is to vertically penetrate the punch pin through the punch pin seat while ensuring that the punch head is aligned with the position to be processed. The cross-sections of the existing punch heads and punch knife edges are not complete circles, and the side of the punch head will have a cut surface. Therefore, when assembling the punch head, it is necessary to adjust the orientation of the cut surface so that the punch head is vertically aligned with the punching knife edge. However, the existing adjustment methods are generally manual judgments, resulting in insufficient installation accuracy of the punch pin, inability to align well with the punching knife edge, and easy damage during the punching process, seriously affecting the punching quality.

[0041] In view of this, this embodiment proposes a parallel assembly and positioning mechanism for the punch pin of a punching machine that can ensure the accurate alignment of the punch pin, is easy to assemble, and does not require manual adjustment. Combining Figure 5 and Figure 6 as shown, it includes a punch pin seat 2 and two punch pins 6. Two vertically arranged punch pin insertion holes 60 are formed on the punch pin seat 2. The punch pin insertion holes 60 correspond to the punch pins 6 one by one, and the punch pins 6 are inserted into the punch pin insertion holes 60. A punch head 61 is formed at the lower end of the punch pin 6, and a punch pin cap 62 is formed at the upper end of the punch pin 6. The diameter of the punch pin cap 62 is larger than that of the punch pin 6. A first positioning cut surface 620 is formed at the edge of the punch pin cap 62. An upper end opening 63 is formed at the top opening of the punch pin insertion hole 60. A second positioning cut surface 630 is formed on the inner wall of the upper end opening 63. The punch pin cap 62 is clamped in the upper end opening 63, and the first positioning cut surface 620 is in close fit with the second positioning cut surface 630.

[0042] In the above structure, a first positioning cut surface 620 is formed at the edge of the punch pin cap 62, and a second positioning cut surface 630 is provided on the inner wall of the upper end opening 63. When installing the punch pin 6, the punch pin cap 62 is inserted into the upper end opening 63, and the first positioning cut surface 620 and the second positioning cut surface 630 are closely clamped. Through the cooperation of the first positioning cut surface 620 and the second positioning cut surface 630, the punch pin 6 can only be inserted into the punch pin insertion hole 60 in a unique direction, thereby ensuring the accurate alignment of the punch pin. At the same time, in the present invention, there is no need to manually adjust the orientation when installing the punch pin, so it is easier to assemble and better meets the process requirements.

[0043] As a preferred method, a punch pin cut surface 610 is formed on the side of the punch head 61, and the punch pin cut surface 610 corresponds to the first positioning cut surface 620 one by one. Based on the above structure, the position of the punch head and the punching knife edge can be accurately aligned.

[0044] As a preferred embodiment, a groove 64 is formed on the top surface of the punch holder 2, and the punch insertion hole 60 is formed at the bottom of the groove 64.

[0045] In order to tightly hold the punch cap 62, in this embodiment, a pressing plate 65 is fixed in the groove 64, and the pressing plate 65 presses against the top of the punch cap 62.

[0046] As a preferred embodiment, the punch 6 is cylindrical, and the diameter of the punch head 61 is smaller than the diameter of the punch 6.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, or improvements made within the technical scope of the present invention shall be included within the scope protected by the present invention.

Claims

1. A porous positioning upper die mechanism for a punching machine, characterized in that, It includes an upper die base. A transverse chute is formed at the bottom of the upper die base. A punch needle base is arranged in the transverse chute and is in sliding fit with it. A positioning plate is fixed in the transverse chute. A plurality of positioning holes are formed in the positioning plate. The plurality of positioning holes extend along the length direction of the transverse chute. A vertically arranged positioning post is inserted through the punch needle base and is in sliding fit with it. A positioning pin capable of being inserted and matched with the positioning hole is formed at the top of the positioning post. A spring is arranged at the bottom of the positioning post. The elastic force applied by the spring drives the positioning post to rise so that the positioning pin is inserted into the positioning hole at the corresponding position. A vertically movable pull rod is inserted through the side of the punch needle base. One end of the pull rod is inserted into the side of the positioning post. The other end of the pull rod extends to the outside of the punch needle base. When the pull rod is toggled downward, the positioning post is driven to move downward so that the positioning pin is separated from the positioning hole. Two upper die pressing plates are fixed at the bottom of the upper die base. Lateral chutes are respectively formed on both sides of the punch needle base. The edges of the two upper die pressing plates are respectively clamped in the two lateral chutes, and the upper die pressing plates are in sliding fit with the lateral chutes. A fixed seat is arranged at the bottom of the punch needle base. The fixed seat is located below the positioning post. The spring is clamped between the positioning post and the fixed seat. An induction switch seat is installed at the bottom of the fixed seat. An induction switch is arranged in the induction switch seat. The triggering end of the induction switch is arranged opposite to the bottom of the positioning post. When the pull rod drives the positioning post to move downward, the positioning post triggers the induction switch so that the induction switch generates an electrical signal. Two vertically arranged punch needle insertion holes are formed in the punch needle base. The punch needle insertion holes correspond to the punch needles one by one. The punch needles are inserted into the punch needle insertion holes. An air duct for injecting compressed air is formed in the punch needle base. A plurality of air holes are respectively formed on both sides of the punch needle base. The air holes communicate with the air duct. The compressed air injected into the air duct is sprayed outwards through the plurality of air holes and fills the gap between the punch needle base and the transverse chute. The controller of the punching machine controls the connection between the air duct and the compressed air air source according to this electrical signal. A punch needle head is formed at the lower end of the punch needle. A punch needle cap is formed at the upper end of the punch needle. The diameter of the punch needle cap is larger than that of the punch needle. A first positioning cut surface is formed at the edge of the punch needle cap. An upper end opening is formed at the top opening of the punch needle insertion hole. A second positioning cut surface is formed on the inner wall of the upper end opening. The punch needle cap is clamped in the upper end opening, and the first positioning cut surface is in close fit with the second positioning cut surface. Lateral cut surfaces are respectively formed on both sides of the positioning pin. A round head handle is formed at the end of the pull rod.

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