Handheld punching machine

Abstract

The handheld punching machine comprises a first air cylinder body, a die head sleeve and a punching base, the rear surface of the first air cylinder body is in threaded connection with a rear shell cover through screws, a second air pressure cylinder body is integrally formed at one end of the first air cylinder body, and an inner air supply cavity is formed in the punching base; an adjusting part is arranged in the inner air supply cavity, a pressure cylinder is installed at one end of the second air pressure cylinder body, a pressure supply part is arranged in the first air cylinder body, a linkage power part is arranged in the second air pressure cylinder body, and a punch is installed at one end of the linkage power part. The outer frame of the die head sleeve is a square frame, the side width is 55 mm, the inner frame is arc-shaped, the stress point is a whole arc, the distance from the outer frame to the inner frame is 19 mm, the stress point of a traditional square base is the right upper opposite angle of the frame and is prone to deformation, upwarp and even breakage due to impact, and after the inner frame is changed into the arc shape, the stress point is the whole arc, and the die head sleeve is more stable under larger impact force.

Description

Technical Field

[0001] The utility model relates to the technical field of punching machines, in particular to a handheld punching machine. Background Art

[0002] Chinese utility model patent: CN217726812U, discloses a handheld pneumatic hydraulic punching machine, including a handheld main body, a main body end cover is arranged in front of the handheld main body, and a piston assembly is connected to the main body end cover; a cylinder and a cylinder front sleeve are arranged in front of the main body end cover, and a cylinder piston assembly is arranged in the cylinder, and the cylinder piston assembly is slidably connected to the oil push rod, and one end of the oil push rod is connected and fixed to the piston assembly; a main body front sleeve is connected in front of the cylinder front sleeve, and a connecting seat is arranged in the main body front sleeve, and the cylinder piston assembly is connected to the connecting seat, and a punch needle is connected to the connecting seat; a die head is connected in front of the main body front sleeve, and a material position is provided in the die head, and a punch needle channel is arranged transversely through the die head. The benefits of the utility model are that it has a compact structure, can be handheld and mobile to punch materials, is easy to use, and has high flexibility;

[0003] The above patent places a steel plate at the punched hole. Since the space at the punched hole is small, the steel plate is easily stuck in the placement position when placed. In addition, the force point of the traditional square base is the upper right corner of the frame, which is easily deformed, warped or even broken by impact.

[0004] Therefore, we make improvements to this and propose a handheld punching machine. Utility Model Content

[0005] The purpose of the utility model is to: because the space at the punching place is small, the steel plate is easy to get stuck in the placement position when placed, and the traditional square base, the force point is the upper right corner of the frame, which is easy to be deformed, warped or even broken by impact.

[0006] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0007] A handheld punch is used to improve the above problems.

[0008] The specific application is as follows:

[0009] It includes a first cylinder body, a die head sleeve, and a stamping base. The rear surface of the first cylinder body is connected to a rear shell cover by a screw thread. A second pneumatic cylinder body is integrally formed at one end of the first cylinder body. An internal air supply cavity is opened inside the stamping base, and an adjusting part is arranged inside the internal air supply cavity. A booster cylinder is installed at one end of the second pneumatic cylinder body, and a hydraulic cylinder is installed at one end of the booster cylinder. A spring seat is provided on one side of the hydraulic cylinder, and a positioning sleeve is installed at one end of the spring seat. A pressure supply part is arranged inside the first cylinder body, and a coupling power part is arranged inside the second pneumatic cylinder body, and a punch is installed at one end of the coupling power part.

[0010] The outer frame of the die head sleeve is a square frame with a side width of 55mm, and the inner frame is arc-shaped. The force point is the entire arc, and the distance from the outer frame to the inner frame is 19mm. The traditional square base has a force point at the upper right corner of the frame, which is easily deformed, warped, or even broken by impact. After the inner frame is changed to an arc shape, the force point is the entire arc, which is more stable under greater impact force.

[0011] As a preferred embodiment of the handheld punching machine provided by the utility model, the cylinder diameter of the first cylinder body is 85mm, the cylinder diameter of the second pneumatic cylinder body is 75mm, the inner diameter of the booster cylinder is 12mm, and the inner diameter of the hydraulic cylinder is 27mm.

[0012] As a preferred embodiment of the handheld punching machine provided by the utility model, the outer frame of the die head sleeve is a square frame with a side width of 55 mm, the inner frame is an arc shape, and the distance from the outer frame to the inner frame is 19 mm.

[0013] As a preferred embodiment of the handheld punching machine provided by the utility model, a placement groove is provided inside the die cover, and a punching channel is provided through the inside of the die cover and the horizontal position of the punch.

[0014] As a preferred embodiment of the handheld punching machine provided by the utility model, the adjusting part includes a rotating disk and a rotating knob, a limiting ring is arranged inside the punching base, the internal rotation of the limiting ring is connected with a gear, and the limiting ring is located between the outside of the gear and the inside of the rotating disk, a notch is opened inside the gear, a cross-shaped groove is opened on the side of the notch close to the rotating knob, and a cross-shaped plate matching the cross-shaped groove is installed on one end of the rotating knob extending to the inside of the notch.

[0015] As a preferred embodiment of the handheld punching machine provided by the utility model, the rotating disk is fixedly connected to the rotating knob, a sliding groove is opened on the top side of the rotating disk, and limiting teeth are installed on the bottom side of the rotating disk. The stamping base is slidably arranged with the rotating disk through the sliding groove on the top side of the rotating disk.

[0016] As a preferred embodiment of the handheld punching machine provided by the utility model, the pressure supply part includes a cylinder sleeve fixed to one end of the inner wall of the first cylinder body, the inner and outer surfaces of the cylinder sleeve are slidably connected with the first cylinder piston, a rotating knob is arranged between the first cylinder piston and the inner wall of the first cylinder body, and a first O-ring is arranged on the outside of one end of the cylinder sleeve located inside the first cylinder body.

[0017] As a preferred embodiment of the handheld punching machine provided by the utility model, the linkage power component includes a second cylinder piston, the second cylinder piston is fixedly connected to the first cylinder piston, and a second O-ring is provided on the outside of one end of the second cylinder piston inside the second pneumatic cylinder body.

[0018] As a preferred embodiment of the handheld punching machine provided by the utility model, an oil supply channel is provided inside the boosting cylinder, the hydraulic cylinder is connected to the boosting cylinder, a hydraulic piston is provided inside the hydraulic cylinder, a spring is provided inside the spring seat, the middle end of the spring is connected to the outer surface of the hydraulic piston, and a punch sleeve is provided on the outer side of the punch and the inner side of the positioning sleeve.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The outer frame of the die head sleeve is a square frame with a side width of 55mm, and the inner frame is arc-shaped. The force point is the entire arc, and the distance from the outer frame to the inner frame is 19mm. The traditional square base has a force point at the upper right corner of the frame, which is easily deformed, warped, or even broken by impact. After the inner frame is changed to an arc shape, the force point is the entire arc, which is more stable under greater impact.

[0021] 2. The width of the placement slot is 8mm, which is wider than the traditional 3-4mm and is not easy to get stuck. The existing patent is that the cylinder drives the hydraulic cylinder to punch holes through the hydraulic cylinder. This application sets two cylinders and a booster cylinder and a power hydraulic cylinder for boosting. Through secondary boosting and drilling, the punching force and depth are greater. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A front structural schematic diagram of the handheld punch provided in this application;

[0023] Figure 2 A schematic diagram of the front cross-sectional structure of the handheld punch provided in this application;

[0024] Figure 3 A schematic diagram of the structure of the rear side of the handheld punch provided in this application;

[0025] Figure 4 A schematic diagram of the connection structure of the rotating knob of the handheld punch provided in the present application;

[0026] Figure 5 A schematic diagram of the structure of the limiting teeth of the handheld punch provided in this application;

[0027] Figure 6 A schematic side cross-sectional view of the rotating disk of the handheld punch provided in the present application.

[0028] Indicated in the figure:

[0029] 1. First cylinder body; 11. Back shell cover; 12. Second pneumatic cylinder body; 13. First cylinder piston; 14. Cylinder sleeve; 15. Second cylinder piston; 16. First O-ring; 17. Second O-ring; 18. Inner air supply chamber; 19. Stamping base; 2. Booster cylinder; 3. Hydraulic cylinder; 4. Positioning sleeve; 5. Turning knob; 501. Turning plate; 502. Notch; 503. Cross groove; 504. Limiting teeth; 505. Gear; 506. Regulating valve; 507. Limiting ring; 6. Die sleeve; 601. Placement groove; 602. Stamping channel; 7. Spring seat; 701. Spring; 8. Hydraulic piston; 801. Hexagonal thin nut; 802. Punch; 803. Punch sleeve. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0031] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. 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.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] As described in the background art, the steel plate is easily stuck in the placement position due to the small space at the punching hole. In addition, the stress point of the traditional square base is the upper right corner of the frame, which is easily deformed, warped or even broken by impact.

[0036] In order to solve this technical problem, the utility model provides a handheld punching machine.

[0037] Specifically, please refer to Figure 1-6 The handheld punching machine specifically includes: a first cylinder body 1, a die head sleeve 6, and a punching base 19. The rear surface of the first cylinder body 1 is connected to a rear shell cover 11 by a screw thread. A second pneumatic cylinder body 12 is integrally formed at one end of the first cylinder body 1. An internal air supply cavity 18 is provided inside the punching base 19, and an adjusting part is provided inside the internal air supply cavity 18. A booster cylinder 2 is installed at one end of the second pneumatic cylinder body 12, and a hydraulic cylinder 3 is installed at one end of the booster cylinder 2. A spring seat 7 is provided on one side of the hydraulic cylinder 3, and a positioning sleeve 4 is installed at one end of the spring seat 7. A pressure supply part is provided inside the first cylinder body 1, and a coupling power part is provided inside the second pneumatic cylinder body 12, and a punch 802 is installed at one end of the coupling power part.

[0038] The outer frame of the die head sleeve 6 is a square frame with a side width of 55mm, and the inner frame is an arc shape. The stress point is the entire arc, and the distance from the outer frame to the inner frame is 19mm. The traditional square base has a stress point at the upper right corner of the frame, which is easily deformed, warped, or even broken by impact. After the inner frame is changed to an arc shape, the stress point is the entire arc, which is more stable under greater impact force. The width of the placement groove 601 is 8mm, which is wider than the traditional 3-4mm and is not easy to get stuck. The existing patent is that the cylinder drives the hydraulic cylinder to punch holes through the hydraulic cylinder. The present application sets two cylinders, a booster cylinder, and a power hydraulic cylinder for boosting. The punching force and depth are greater through secondary boosting.

[0039] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] Example 1

[0043] Please refer to Figure 1-6 A handheld punching machine includes a first cylinder body 1, a die head sleeve 6, and a punching base 19. The rear surface of the first cylinder body 1 is connected to a rear shell cover 11 by screw threads. A second pneumatic cylinder body 12 is integrally formed at one end of the first cylinder body 1. An internal air supply cavity 18 is provided inside the punching base 19. An adjusting member is provided inside the internal air supply cavity 18. A booster cylinder 2 is installed at one end of the second pneumatic cylinder body 12. A hydraulic cylinder 3 is installed at one end of the booster cylinder 2. A spring seat 7 is provided on one side of the hydraulic cylinder 3. A positioning sleeve 4 is installed at one end of the spring seat 7. A pressure supply member is provided inside the first cylinder body 1. A linkage power member is provided inside the second pneumatic cylinder body 12. A punch 802 is installed at one end of the linkage power member. The linkage power member includes a second cylinder piston 15. The second cylinder piston 15 is fixedly connected to the first cylinder piston 13. A second O-ring 17 is provided on the outside of one end of the second cylinder piston 15 inside the second pneumatic cylinder body 12. The pressure supply part includes a cylinder sleeve 14 fixed to one end of the inner wall of the first cylinder body 1, the inner and outer surfaces of the cylinder sleeve 14 are slidably connected with the first cylinder piston 13, a rotating knob 5 is provided between the first cylinder piston 13 and the inner wall of the first cylinder body 1, and a first O-ring 16 is provided on the outer side of one end of the cylinder sleeve 14 located inside the first cylinder body 1. The linkage power part includes a second cylinder piston 15, the second cylinder piston 15 is fixedly connected to the first cylinder piston 13, and a second O-ring 17 is provided on the outer side of one end of the second cylinder piston 15 inside the second pneumatic cylinder body 12.

[0044] During the implementation process, when the stamping base 19 is inflated, the first cylinder piston 13 inside the first cylinder body 1 is driven to move inside the outer part of the cylinder sleeve 14, thereby driving the second cylinder piston 15 inside the second pneumatic cylinder body 12 to move into the booster cylinder 2, and the hydraulic piston 8 and the punch 802 are driven by the booster cylinder 2 to enter the stamping channel 602 opened on the die head sleeve 6, and the steel plate placed in the placement groove 601 is punched. After the air is released, the hydraulic piston 8 rebounds to its original position under the action of the spring 701 installed on the spring seat 7 inside the hydraulic cylinder 3, and the punch sleeve 803 moves with the punch 802, and the rotating knob 5, the first O-ring 16, and the second O-ring 17 are used for sealing.

[0045] Example 2

[0046] The first cylinder body 1 has a cylinder diameter of 85 mm, the second pneumatic cylinder body 12 has a cylinder diameter of 75 mm, the booster cylinder 2 has an inner diameter of 12 mm, and the hydraulic cylinder 3 has an inner diameter of 27 mm. A placement groove 601 is provided inside the die head sleeve 6, and a punching channel 602 is provided inside the die head sleeve 6 and horizontally between the punch 802 and the punch.

[0047] Implementation effect: the outer frame of the die head sleeve 6 is a square frame with a side width of 55mm, the inner frame is an arc shape, the stress point is the entire arc, and the distance from the outer frame to the inner frame is 19mm. The traditional square base has a stress point at the upper right corner of the frame, which is easily deformed, warped or even broken by impact. After the inner frame is changed to an arc shape, the stress point is the entire arc, which is more stable under greater impact force. The width of the placement groove 601 is 8mm, which is wider than the traditional 3-4mm and is not easy to get stuck. The existing patent is that the cylinder drives the hydraulic cylinder to punch holes through the hydraulic cylinder. The present application sets two cylinders and a booster cylinder and a power hydraulic cylinder for boosting. The punching force and depth are greater through secondary boosting.

[0048] Example 3

[0049] The adjusting member includes a rotating disk 501 and a rotating knob 5. A limiting ring 507 is arranged inside the stamping base 19. A gear 505 is rotatably connected inside the limiting ring 507, and the limiting ring 507 is located between the outer side of the gear 505 and the inside of the rotating disk 501. A notch 502 is provided inside the gear 505. A cross-shaped groove 503 is provided on the side of the notch 502 close to the rotating knob 5. A cross-shaped plate matching the cross-shaped groove 503 is installed at one end of the rotating knob 5 extending to the inside of the notch 502. The rotating disk 501 is fixedly connected to the rotating knob 5. A sliding groove is provided on the top side of the rotating disk 501. A limiting tooth 504 is installed on the bottom side of the rotating disk 501. The stamping base 19 is slidably arranged with the rotating disk 501 through the sliding groove on the top side of the rotating disk 501.

[0050] During the implementation process, the rotating knob 5 is pushed outward into the cross-shaped groove 503 provided on the notch 502. Since the rotating knob 5 is fixedly connected to the rotating disk 501, the limiting teeth 504 on the rotating disk 501 are driven to disengage from the teeth on the gear 505. The rotating gear 505 drives the regulating valve 506 to rotate to open the size of the channel inside the stamping base 19 and the inflation part, and moves the rotating knob 5 inward to make the rotating knob 5 enter the innermost part of the notch 502. At this time, the rotating knob 5 drives the limiting teeth 504 on the rotating disk 501 to be set on both sides of the teeth of the gear 505 for restriction. Since a sliding groove is provided on the top side of the rotating disk 501, the rotating disk 501 will not move, and the limiting gear 505 will not move.

[0051] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A handheld punching machine, comprising a first cylinder body (1), a die head cover (6), and a punching base (19), characterized in that: The rear surface of the first cylinder body (1) is connected to a rear shell cover (11) by a screw thread, and a second pneumatic cylinder body (12) is integrally formed at one end of the first cylinder body (1). An internal air supply chamber (18) is provided inside the stamping base (19), and an adjusting part is provided inside the internal air supply chamber (18). A booster cylinder (2) is installed at one end of the second pneumatic cylinder body (12), and a hydraulic cylinder (3) is installed at one end of the booster cylinder (2). A spring seat (7) is provided on one side of the hydraulic cylinder (3), and a positioning sleeve (4) is installed at one end of the spring seat (7). A pressure supply part is provided inside the first cylinder body (1), and a coupling power part is provided inside the second pneumatic cylinder body (12), and a punch (802) is installed at one end of the coupling power part.

2. A handheld punching machine according to claim 1, characterized in that: The cylinder diameter of the first cylinder body (1) is 85 mm, the cylinder diameter of the second pneumatic cylinder body (12) is 75 mm, the inner diameter of the booster cylinder (2) is 12 mm, and the inner diameter of the hydraulic cylinder (3) is 27 mm.

3. A handheld punching machine according to claim 2, characterized in that: The outer frame of the die head cover (6) is a square frame with a side width of 55 mm, the inner frame is an arc shape, and the distance from the outer frame to the inner frame is 19 mm.

4. A handheld punching machine according to claim 3, characterized in that: A placement groove (601) is provided inside the die head sleeve (6), and a punching channel (602) is provided inside the die head sleeve (6) and at a horizontal position extending through the punch (802).

5. A handheld punching machine according to claim 4, characterized in that: The adjusting member comprises a rotating disk (501) and a rotating knob (5); a limiting ring (507) is arranged inside the stamping base (19); a gear (505) is rotatably connected inside the limiting ring (507), and the limiting ring (507) is located between the outer side of the gear (505) and the inside of the rotating disk (501); a notch (502) is provided inside the gear (505); a cross-shaped groove (503) is provided on a side of the notch (502) close to the rotating knob (5); and a cross-shaped plate matching the cross-shaped groove (503) is installed on one end of the rotating knob (5) extending to the inside of the notch (502).

6. A handheld punching machine according to claim 5, characterized in that: The rotating disk (501) is fixedly connected to the rotating knob (5); a sliding groove is provided on the top side of the rotating disk (501); a limiting tooth (504) is installed on the bottom side of the rotating disk (501); and the stamping base (19) is slidably arranged with the rotating disk (501) through the sliding groove on the top side of the rotating disk (501).

7. A handheld punching machine according to claim 6, characterized in that: The pressure supply component comprises a cylinder sleeve (14) fixed to one end of the inner wall of the first cylinder body (1); the inner and outer surfaces of the cylinder sleeve (14) are slidably connected to the first cylinder piston (13); a rotating knob (5) is arranged between the first cylinder piston (13) and the inner wall surface of the first cylinder body (1); and a first O-ring (16) is arranged on the outer side of one end of the cylinder sleeve (14) located inside the first cylinder body (1).

8. A handheld punching machine according to claim 7, characterized in that: The linkage power component comprises a second cylinder piston (15), the second cylinder piston (15) is fixedly connected to the first cylinder piston (13), and a second O-ring (17) is arranged inside the second pneumatic cylinder body (12) and outside one end of the second cylinder piston (15).

9. A handheld punching machine according to claim 8, characterized in that: The booster cylinder (2) is provided with an oil supply passage, the hydraulic cylinder (3) is connected to the booster cylinder (2), a hydraulic piston (8) is provided inside the hydraulic cylinder (3), a spring (701) is provided inside the spring seat (7), the middle end of the spring (701) is connected to the outer surface of the hydraulic piston (8), and a punch sleeve (803) is provided on the outer side of the punch (802) and located on the inner side of the positioning sleeve (4).

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