Precise metal punching machine with adjustable punching force

Abstract

The invention discloses a precision metal punching machine with adjustable punching force, and relates to the technical field of punching machines, the precision metal punching machine comprises a frame, the side of the upper surface of the bottom of the frame is fixedly connected with limiting rods, a push plate is connected among the four limiting rods in a nested manner, and an air cylinder is fixedly connected between the center of the upper surface of the push plate and the frame; the sliding rail is fixedly connected to the upper surface of the bottom of the frame, a receiving groove is formed in the center of the upper surface of the bottom of the frame, an adjusting block is connected into the sliding rail in a nested mode, and a stamping die body is arranged on the inner side of the adjusting block. According to the precise metal punching machine with the adjustable punching force, the abutting blocks are connected and fixed to the lower surface of the push plate through the fixing plates and bolts, a user can adjust the moving distance of the adjusting block by replacing the abutting blocks with different inclination angles, and therefore the punching force of the punching die body to metal is further adjusted; therefore, stamping requirements of different workpieces are met, and adaptability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of punching machines, in particular to a precision metal punching machine with adjustable punching force. Background Art

[0002] A stamping machine, also known as a punch or press, is a mechanical device widely used in industrial production. Stamping machines are widely used in industrial production, especially in the field of metal processing. It can complete a variety of processes such as blanking, punching, forming, drawing, trimming, fine blanking, shaping, riveting and extrusion. Therefore, stamping machines are widely used in the production of electronics, communications, computers, home appliances, furniture, transportation vehicles (such as cars, motorcycles, bicycles) and hardware accessories. When the stamping machine is working, it is necessary to ensure the stability of the device operation to reduce the possibility of damage to the stamping workpiece during processing.

[0003] In order to overcome the above defects, prior art 1 (publication number: CN106738053B, Chinese patent published on September 4, 2018) is a stamping mechanism of a stamping machine, which belongs to the field of mechanical equipment technology. It solves the problem of low stamping quality of existing stamping machines. The stamping machine includes a frame, a stamping platform is fixedly connected to the frame, and the stamping mechanism includes a lifting platform, a plurality of stamping heads are fixedly connected to the lifting platform, and a sliding sleeve of the stamping head is provided with a positioning cylinder and a cutter head. The positioning cylinder is provided with a stamping spring that can make the positioning cylinder and the cutter head have a downward movement tendency. A transmission member is provided between the cutter head and the stamping head, which can make the cutter head rotate circumferentially when the cutter head moves downward and abuts against the felt, and a retaining frame is provided on the stamping platform. The punching mechanism of this punching machine has higher punching quality for felt, because the felt is pre-positioned by the positioning cylinder, the felt is prevented from shifting under the impact force, and the cutter head can rotate during the punching process, so that the cutter head can cut first and then punch, so the punching is smoother and the precision is higher. When the cutter head punches the felt downward, the retaining frame can compress the retaining spring and drop to provide space for the cutter head. However, during the punching process of the felt, the retaining frame is always against the felt to provide support for the felt, so as to avoid deformation of the felt during punching and reduce the punching precision.

[0004] There is also prior art 2 (publication number: CN108099243B, Chinese patent published on 2019-08-23) a stamping machine, which belongs to the field of stamping equipment. A cooling mechanism is installed on the lower die seat. When the integral hydraulic stamping machine is in mold closing, the mobile platform moves into the accommodating chamber, the accommodating chamber is filled with refrigerant, and the low-temperature and low-pressure refrigerant gas is compressed into a high-temperature and high-pressure refrigerant gas in the accommodating chamber. When the refrigerant gas reaches a certain pressure, the high-pressure valve automatically opens, and the high-temperature and high-pressure refrigerant gas releases heat in the condenser to become a medium-temperature and high-pressure liquid, and then becomes a low-temperature and low-pressure liquid after being reduced in pressure by the throttling device. The low-temperature and low-pressure liquid refrigerant fully absorbs heat and evaporates in the cooling pipe to become a low-temperature and low-pressure gas; when the integral hydraulic stamping machine is parted, the mobile platform is ejected out of the accommodating chamber under the action of the ejection device, the low-pressure valve automatically opens, and the low-temperature and low-pressure refrigerant gas is sucked back into the accommodating chamber to wait for the next compression, and this reciprocating cycle. The cooling mechanism of the present invention can greatly improve the cooling strength of the stamping die and meet the stamping requirements of workpieces with increasingly larger tonnage.

[0005] Although the existing technologies 1 and 2 can perform stamping operations stably, the stamping force of the device cannot be adjusted during stamping, and different workpieces require different forces during stamping. The stamping operation with fixed force has limitations to a certain extent.

[0006] Therefore, we propose a precision metal punching machine with adjustable punching force to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a precision metal stamping machine with adjustable stamping force, so as to solve the problem raised in the above background technology that the stamping force of the devices currently on the market cannot be adjusted during stamping, different workpieces require different forces during stamping, and the stamping operation with fixed force has limitations to a certain extent.

[0008] To achieve the above object, the present invention provides the following technical solution: a precision metal stamping machine with adjustable stamping force, comprising a frame, a limit rod is fixedly connected to the side of the bottom upper surface of the frame, and a push plate is nested and connected between four groups of limit rods, and a cylinder is fixedly connected between the center of the upper surface of the push plate and the frame; A slide rail, the slide rail is fixedly connected to the bottom upper surface of the frame, and a material receiving groove is opened at the center of the bottom upper surface of the frame, and an adjustment block is nested and connected inside the slide rail, and a stamping die body is arranged on the inner side of the adjustment block, and an adjustment mechanism for adjusting the stamping force of the stamping die body is arranged between the adjustment block and the lower surface of the push plate, an auxiliary plate is fixedly connected to the frame, and a soot blowing mechanism for cleaning impurities attached to the stamping die body is arranged between the upper surface side of the auxiliary plate and the lower surface side of the push plate; Preferably, the adjustment mechanism includes a fixing plate, which is fixedly connected to the side of the push plate by bolts, and a resistance block is fixedly connected to the lower surface of the fixing plate, a fixing rod is nested and connected between the two groups of sides of the adjustment blocks, and a buffer spring is wound around the outer side of the fixing rod, and the edge end of the buffer spring is fixedly connected to the inner side of the edge end of the adjustment block.

[0009] Preferably, the inner side of the abutment block is designed with an inclined structure, and the positions of the abutment block and the adjustment block correspond one to one.

[0010] Preferably, the adjusting block has a "concave"-shaped structure design when viewed from above, and the adjusting block forms a sliding structure with the slide rail through the abutment block, and an elastic structure is formed between the adjusting blocks through the buffer spring.

[0011] Preferably, the sootblowing mechanism includes a rotating rod, which is hinged on the upper surface side of the auxiliary plate, and the upper end of the rotating rod is hingedly provided with an extrusion plate, a sliding groove is opened on the lower surface side of the push plate, and a sliding block is nested and connected inside the sliding groove, and the sliding block is fixedly connected to the upper surface of the push plate, a guide frame is nested and connected to the lower surface of the push plate, and an exhaust pipe is penetrated through the lower surface of the guide frame, and an air supply hose is penetrated through the side of the guide frame, an air bag is fixedly connected to the inner side of the push plate, and the air bag is penetrated and connected to the other end of the air supply hose.

[0012] Preferably, the squeezing plates are symmetrically distributed about the center point of the push plate, two groups of airbags are provided on a single side of the push plate, and the airbags are connected to the guide frame through an air supply hose.

[0013] Preferably, the rotating rod forms a rotating structure through the extrusion plate and the auxiliary plate, and the extrusion plate drives the sliding block and the sliding groove through the rotating rod to form a sliding structure.

[0014] Preferably, an air supply pipe is also connected through the side of the airbag, and an electric valve is provided on the air supply pipe, and a sleeve rod is nested and connected to the outer side of the air supply pipe, a return spring is fixedly connected between the sleeve rod and the outer side of the air supply pipe, and a connecting rod is fixedly connected to the outer end of the sleeve rod, and the other end of the connecting rod is hinged to the side of the guide frame.

[0015] Preferably, the guide frame forms a rotating structure through a connecting rod and a push plate, the electric valves are opened indirectly by staggering, and the sleeve rod forms an elastic structure through a reset spring and an air supply pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The user can start the cylinder, and the push plate can drive the resistance block to move down stably along the limit rod under the pushing action of the cylinder. At this time, the inclined edge of the resistance block will gradually contact the adjustment block, and the adjustment block will move toward each other under the resistance action of the resistance block, so that the metal is stamped by the stamping die body, which is an existing technology (the shape of the stamping die body is not limited and can be designed according to needs). At the same time, the stamped metal can fall into the receiving trough, so that the user can take the workpiece easily; The resistance block is fixed to the lower surface of the push plate by bolts of the fixing plate. The user can adjust the moving distance of the adjustment block by replacing the resistance blocks with different inclination angles, thereby further adjusting the stamping force of the stamping die body on the metal, thereby meeting the stamping requirements of different workpieces and improving the adaptability of the device; After the two sets of adjusting blocks are stamped, the adjusting blocks are not affected by the resistance of the adjusting blocks. At this time, the adjusting blocks are reset to both sides under the driving force of the elastic force of the buffer spring, so as to carry out the next stamping operation; When the stamping operation is completed and the push plate moves up and resets, the rotating rod will be pulled synchronously, causing the two ends of the rotating rod to rotate. At this time, the upper end of the rotating rod will pull the extrusion plate synchronously, causing the extrusion plate to drive the slider to move along the slide groove limit. When the extrusion plate is moving, it will squeeze the airbag synchronously. The gas inside the airbag is input into the guide frame through the air supply hose and discharged to the outside through the exhaust pipe. At this time, the gas discharged from the exhaust pipe can supply air to the stamping die, thereby processing the dust generated during stamping and reducing the impact of the dust on subsequent stamping operations. When the air bag is squeezed, the internal gas will be synchronously transported to the air supply pipe. At this time, the electric valve will be indirectly opened by offset. When the electric valve is opened, the air supply pipe will transport the gas to the inside of the sleeve rod and push the sleeve rod to move outward. At this time, the sleeve rod can push the side of the guide frame through the connecting rod, causing the guide frame to indirectly deflect, thereby realizing multi-angle blowing operation and further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the push plate of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the material receiving trough of the present invention; Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of the adjustment block of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the knot adjustment block of the present invention; Figure 6 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating rod of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the slider of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the airbag of the present invention.

[0018] In the figure: 1. frame; 2. cylinder; 3. limit rod; 4. push plate; 5. resistance block; 6. slide rail; 7. adjustment block; 8. material receiving trough; 9. extrusion plate; 10. guide frame; 11. rotating rod; 12. fixing rod; 13. buffer spring; 14. air bag; 15. exhaust pipe; 16. air supply hose; 17. air supply pipe; 18. electric valve; 19. sleeve rod; 20. connecting rod; 21. reset spring; 22. slide groove; 23. slider; 24. stamping die; 25. fixing plate; 26. auxiliary plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0020] Embodiment 1: Figure 1 and Figure 3 The technical solution shown in the figure, the present invention provides the following technical solution: a precision metal punching machine with adjustable punching force, disclosing a material receiving trough 8, through which the user can easily take the processed workpiece: A frame 1, a limit rod 3 is fixedly connected to the side of the bottom upper surface of the frame 1, and a push plate 4 is nested and connected between four groups of limit rods 3, and a cylinder 2 is fixedly connected between the center of the upper surface of the push plate 4 and the frame 1; The user can start the cylinder 2. At this time, the push plate 4 can drive the resistance block 5 to move downward stably along the limit rod 3 under the pushing action of the cylinder 2. At this time, the inclined edge of the resistance block 5 will gradually contact the adjustment block 7. The adjustment block 7 moves toward each other under the resistance of the resistance block 5, so that the metal is stamped through the stamping die 24 (the stamping die 24 is a prior art, and its shape is not restricted and can be designed as needed). At the same time, the stamped metal can fall into the receiving trough 8, which is convenient for the user to take the workpiece.

[0021] Embodiment 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The technical solution shown in the figure, the present invention provides the following technical solution: a precision metal stamping machine with adjustable stamping force, an adjustment mechanism is disclosed, and the stamping force can be adjusted by the adjustment mechanism: The slide rail 6 is fixedly connected to the bottom upper surface of the frame 1, and a receiving groove 8 is provided at the center of the bottom upper surface of the frame 1, and an adjusting block 7 is nested and connected inside the slide rail 6, and a stamping die 24 is provided inside the adjusting block 7, and an adjusting mechanism for adjusting the stamping force of the stamping die 24 is provided between the adjusting block 7 and the lower surface of the push plate 4; The adjusting mechanism includes a fixing plate 25, which is fixedly connected to the side of the push plate 4 by bolts, and a resistance block 5 is fixedly connected to the lower surface of the fixing plate 25, a fixing rod 12 is nested and connected between the sides of the two groups of adjusting blocks 7, and a buffer spring 13 is wound around the outer side of the fixing rod 12, and the side end of the buffer spring 13 is fixedly connected to the inner side of the side end of the adjusting block 7, the inner side of the resistance block 5 is designed with an inclined structure, and the positions of the resistance block 5 and the adjusting block 7 correspond one to one, the adjusting block 7 is designed with a "concave" structure when viewed from above, and the adjusting block 7 forms a sliding structure with the slide rail 6 through the resistance block 5, and an elastic structure is formed between the adjusting blocks 7 through the buffer spring 13.

[0022] The resistance block 5 is fixed to the lower surface of the push plate 4 by bolts connected to the fixing plate 25. The user can adjust the moving distance of the adjustment block 7 by replacing the resistance block 5 with different inclination angles, so as to further adjust the stamping intensity of the metal by the stamping die 24, so as to meet the stamping requirements of different workpieces and improve the adaptability of the device. After the stamping of the two groups of adjustment blocks 7 is completed, the adjustment block 7 is not affected by the resistance of the adjustment block 7. At this time, the adjustment block 7 is reset to both sides driven by the elastic force of the buffer spring 13, so as to carry out the next stamping operation.

[0023] Embodiment 3: Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The technical solution shown in the figure, the present invention provides the following technical solution: a precision metal stamping machine with adjustable stamping force, a soot blowing mechanism is disclosed, and the soot blowing mechanism can reduce the interference of dust on stamping: An auxiliary plate 26 is fixedly connected to the frame 1, and a soot blowing mechanism is provided between the upper surface side of the auxiliary plate 26 and the lower surface side of the push plate 4 to clean the impurities attached to the stamping die 24; The soot blowing mechanism includes a rotating rod 11, which is hinged on the upper surface side of the auxiliary plate 26, and the upper end of the rotating rod 11 is hingedly provided with an extrusion plate 9, a slide groove 22 is provided on the lower surface side of the push plate 4, and a slider 23 is nested and connected inside the slide groove 22, and the slider 23 is fixedly connected to the upper surface of the push plate 4, and a guide frame 10 is nested and connected on the lower surface of the push plate 4, and an exhaust pipe 15 is penetrated on the lower surface of the guide frame 10, and the side of the guide frame 10 is penetrated and connected The air supply hose 16, the air bag 14 is fixedly connected to the inner side of the push plate 4, and the air bag 14 is connected with the other end of the air supply hose 16 through the air bag 14, the extrusion plate 9 is symmetrically distributed about the center point of the push plate 4, two groups of air bags 14 are arranged on one side of the push plate 4, and the air bags 14 are connected to the guide frame 10 through the air supply hose 16, the rotating rod 11 forms a rotating structure with the auxiliary plate 26 through the extrusion plate 9, and the extrusion plate 9 drives the slider 23 and the slide groove 22 through the rotating rod 11 to form a sliding structure; An air supply pipe 17 is also connected to the side of the airbag 14, and an electric valve 18 is arranged on the air supply pipe 17, and a sleeve rod 19 is nested and connected to the outer side of the air supply pipe 17, a return spring 21 is fixedly connected between the sleeve rod 19 and the outer side of the air supply pipe 17, and a connecting rod 20 is fixedly connected to the outer end of the sleeve rod 19, and the other end of the connecting rod 20 is hinged to the side of the guide frame 10, the guide frame 10 forms a rotating structure with the push plate 4 through the connecting rod 20, the electric valve 18 is indirectly opened by staggered movement, and the sleeve rod 19 forms an elastic structure with the air supply pipe 17 through the return spring 21.

[0024] After the stamping operation is completed, the push plate 4 will synchronously pull the rotating rod 11 during the process of moving up and resetting, so that the two ends of the rotating rod 11 will rotate. At this time, the upper end of the rotating rod 11 will synchronously pull the extrusion plate 9, so that the extrusion plate 9 drives the slider 23 to move along the slide groove 22. When the extrusion plate 9 is moving, it will synchronously squeeze the airbag 14. The gas inside the airbag 14 is input into the guide frame 10 through the air supply hose 16 and discharged to the outside through the exhaust pipe 15. At this time, the gas discharged from the exhaust pipe 15 can supply air to the stamping die 24, so as to deal with the dust generated during stamping and reduce the influence of the dust on the subsequent stamping operation. After the stamping operation is completed, the push plate 4 will synchronously pull the rotating rod 11 during the process of moving up and resetting, so that the two ends of the rotating rod 11 will rotate. At this time, the upper end of the rotating rod 11 will synchronously pull the extrusion plate 9, so that the extrusion plate 9 drives the slider 23 to move along the slide groove 22. When the extrusion plate 9 is moving, it will synchronously squeeze the airbag 14. The gas inside the airbag 14 is input into the guide frame 10 through the air supply hose 16 and discharged to the outside through the exhaust pipe 15. At this time, the gas discharged from the exhaust pipe 15 can supply air to the stamping die 24, so as to deal with the dust generated during stamping and reduce the influence of the dust on the subsequent stamping operation. When the airbag 14 is squeezed, the internal gas will be synchronously transported to the air supply pipe 17. At this time, the electric valve 18 is indirectly opened by offset. When the electric valve 18 is opened, the air supply pipe 17 transports the gas to the inside of the sleeve rod 19 and pushes the sleeve rod 19 to move outward. At this time, the sleeve rod 19 can push the side of the guide frame 10 through the connecting rod 20, so that the guide frame 10 is indirectly deflected, thereby realizing multi-angle blowing operation and further improving the cleaning effect.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A precision metal punching machine with adjustable punching force, comprising a frame (1), a limit rod (3) fixedly connected to the side of the bottom upper surface of the frame (1), a push plate (4) nested between four groups of limit rods (3), and a cylinder (2) fixedly connected between the center of the upper surface of the push plate (4) and the frame (1); It is characterized in that The punching machine also includes: A slide rail (6), wherein the slide rail (6) is fixedly connected to the bottom upper surface of the frame (1), and a material receiving groove (8) is opened at the center position of the bottom upper surface of the frame (1), and an adjusting block (7) is nested and connected inside the slide rail (6), and a stamping die (24) is arranged on the inner side of the adjusting block (7), and an adjusting mechanism capable of adjusting the stamping force of the stamping die (24) is arranged between the adjusting block (7) and the lower surface of the push plate (4), and an auxiliary plate (26) is fixedly connected to the frame (1), and a soot blowing mechanism capable of cleaning impurities attached to the stamping die (24) is arranged between the upper surface side of the auxiliary plate (26) and the lower surface side of the push plate (4).

2. A precision metal punching machine with adjustable punching force according to claim 1, characterized in that: The adjustment mechanism comprises a fixing plate (25), the fixing plate (25) being fixedly connected to the side of the push plate (4) by means of bolts, and a resistance block (5) being fixedly connected to the lower surface of the fixing plate (25), a fixing rod (12) being nested and connected between the sides of the two groups of adjustment blocks (7), a buffer spring (13) being wound around the outer side of the fixing rod (12), and an end of the buffer spring (13) being fixedly connected to the inner side of an end of the adjustment block (7).

3. A precision metal punching machine with adjustable punching force according to claim 2, characterized in that: The inner side of the abutment block (5) is designed to be an inclined structure, and the positions of the abutment block (5) and the adjustment block (7) correspond one to one.

4. The precision metal punching machine with adjustable punching force according to claim 2, characterized in that: The adjustment block (7) has a "concave"-shaped structural design when viewed from above, and the adjustment block (7) forms a sliding structure with the slide rail (6) through the abutment block (5), and an elastic structure is formed between the adjustment blocks (7) through the buffer spring (13).

5. The precision metal punching machine with adjustable punching force according to claim 1, characterized in that: The soot blowing mechanism comprises a rotating rod (11), the rotating rod (11) is hinged on the upper surface side of the auxiliary plate (26), and the upper end of the rotating rod (11) is hingedly provided with an extrusion plate (9), the lower surface side of the push plate (4) is provided with a slide groove (22), and the inside of the slide groove (22) is nested and connected with a slider (23), and the slider (23) is fixedly connected to the upper surface of the push plate (4), the lower surface of the push plate (4) is nested and connected with a guide frame (10), and the lower surface of the guide frame (10) is penetrated with an exhaust pipe (15), and the side of the guide frame (10) is penetrated and connected with an air supply hose (16), the inner side of the push plate (4) is fixedly connected with an air bag (14), and the air bag (14) is penetrated and connected with the other end of the air supply hose (16).

6. A precision metal punching machine with adjustable punching force according to claim 5, characterized in that: The squeezing plates (9) are symmetrically distributed about the center point of the push plate (4), two groups of air bags (14) are arranged on a single side of the push plate (4), and the air bags (14) are connected to the guide frame (10) via an air supply hose (16).

7. The precision metal punching machine with adjustable punching force according to claim 5, characterized in that: The rotating rod (11) forms a rotating structure through the extrusion plate (9) and the auxiliary plate (26), and the extrusion plate (9) drives the slider (23) and the slide groove (22) through the rotating rod (11) to form a sliding structure.

8. The precision metal punching machine with adjustable punching force according to claim 5, characterized in that: An air supply pipe (17) is also connected through the side of the air bag (14), and an electric valve (18) is provided on the air supply pipe (17). A sleeve rod (19) is nested and connected to the outside of the air supply pipe (17). A return spring (21) is fixedly connected between the sleeve rod (19) and the outside of the air supply pipe (17). A connecting rod (20) is fixedly connected to the outer end of the sleeve rod (19), and the other end of the connecting rod (20) is hinged to the side of the guide frame (10).

9. The precision metal punching machine with adjustable punching force according to claim 8, characterized in that: The guide frame (10) forms a rotating structure with the push plate (4) via a connecting rod (20), the electric valve (18) is opened indirectly by dislocation, and the sleeve rod (19) forms an elastic structure with the air supply pipe (17) via a return spring (21).

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