Pin shaft positioning and punching device

Abstract

The utility model discloses a pin shaft positioning and punching device, which belongs to the technical field of pin shaft production and processing, aims at solving the problems of poor safety and instability of pin shaft punching in the prior art, and comprises a U-shaped base, an arc-shaped placing groove is formed in the middle of the top surface of the U-shaped base, and two mounting seats which are symmetrically distributed are fixed on the top surface of the U-shaped base. Movable rods are connected into the two mounting seats in a sliding manner; through the arrangement of the abutting mechanism, the cam is driven to rotate and the movable rod is extruded to move in the mounting seat, so that when the protruding end on the cam is in contact with the end part of the movable rod, the movable rod drives the arc-shaped abutting plate to clamp and limit the pin shaft, and the stability of punching the pin shaft is improved; and a second spring enables one of the moving blocks to abut against the fixing base, so that the stability of the rack after movement is kept, and the stability of the pin shaft during punching operation is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pin production and processing, and specifically relates to a pin positioning and punching device. Background Art

[0002] Pins are a type of standardized fastener that can be used for static fixed connections or for relative movement with the connected parts. They are mainly used at the hinge of two parts to form a hinge connection. Pins are usually locked with a cotter pin, which is reliable and easy to disassemble.

[0003] In the prior art, when positioning and drilling a pin, the pin is usually placed on a horizontal platform, and a worker limits the pin by hand, and then performs the drilling work on the pin under a punching machine. However, such operation is unsafe and may also cause the pin to be unstable, thereby causing deviations in the pin drilling and affecting the drilling quality of the pin.

[0004] Therefore, a pin shaft positioning and punching device is needed to solve the problem of poor safety and instability of pin shaft punching in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a pin shaft positioning and punching device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pin positioning and punching device, comprising a U-shaped base, an arc-shaped placement groove is opened in the middle of the top surface of the U-shaped base, two symmetrically distributed mounting seats are fixed on the top surface of the U-shaped base, movable rods are slidably connected inside the two mounting seats, and an arc-shaped abutment plate is fixed on the close ends of the two movable rods, and reset parts cooperating with the movable rods are arranged inside the two mounting seats, rotating shafts are rotatably connected to both sides of the top surface of the U-shaped base, cams cooperating with the movable rods are fixed on the outer surface of the rotating shaft, and pressing mechanisms are arranged on the corresponding rotating shafts on both sides of the top surface of the U-shaped base.

[0007] It should be noted in the scheme that the pressing mechanism includes a fixed seat fixed to the top surface of the U-shaped base, a moving rod is fixedly passed through the surface of the fixed seat, the outer surface movable sleeve of the moving rod is provided with three moving blocks, one side of the three moving blocks is fixed with a rack, the outer surface fixed sleeve of the rotating shaft is provided with a gear, the rack is meshed with the gear for transmission, the outer surface movable sleeve of the moving rod is provided with a second spring, one end of the second spring is fixed to the surface of the fixed seat, and the other end of the second spring is fixed to one of the moving blocks.

[0008] It is further worth explaining that the reset member includes a stopper fixedly mounted on the outer surface of the movable rod, a movable groove matching the stopper is opened inside the mounting seat, a first spring is movably mounted on the outer surface of the movable rod corresponding to the movable groove, one end of the first spring is fixed to the stopper, and the other end of the first spring is fixed to the inner wall of the movable groove.

[0009] It should be further explained that a connecting rod is fixed to the ends of the two racks, a pull rod is fixed between the ends of the two connecting rods, and a limiting mechanism is provided on the top surface of the pull rod.

[0010] As a preferred embodiment, the limiting mechanism includes a fixed plate fixed to the top surface of the pull rod, a rectangular through hole is opened on one side of the fixing plate, a limiting rod is fixed on the inner wall of the rectangular through hole, a movable plate is movably sleeved on the outer surface of the limiting rod, an arc-shaped socket is fixed on one side of the movable plate, and a slot is opened on the bottom surface of the arc-shaped socket.

[0011] As a preferred embodiment, anti-slip grooves are evenly provided on the adjacent sides of the two arc-shaped abutment plates, connecting plates are fixed on both sides of the U-shaped base, and two connecting holes are provided on the top surface of the connecting plates.

[0012] Compared with the prior art, the pin positioning and punching device provided by the utility model has at least the following beneficial effects:

[0013] (1) By setting the pressing mechanism, the cam is driven to rotate and squeeze the movable rod to move in the mounting seat, so that when the raised end on the cam contacts the end of the movable rod, the movable rod drives the arc-shaped pressing plate to clamp and limit the pin shaft, thereby improving the stability of the pin shaft when punching holes and improving the safety of the workers during the punching operation. The second spring makes one of the moving blocks press against the fixed seat, thereby maintaining the stability of the rack after movement, and further improving the stability of the pin shaft during the punching operation.

[0014] (2) After the pin is clamped and limited by two arc-shaped abutment plates, the movable plate is pulled down so that the groove on the bottom surface of the arc-shaped clamping seat is clamped on the end of the pin, thereby auxiliary limiting the pin and improving the stability of the pin when drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 It is a partial structural schematic diagram of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the limiting mechanism of the utility model.

[0019] In the figure: 1. U-shaped base; 2. mounting seat; 3. arc-shaped abutment plate; 4. cam; 5. rotating shaft; 6. gear; 7. rack; 8. connecting rod; 9. pull rod; 10. movable rod; 11. fixed plate; 12. limit rod; 13. movable plate; 14. arc-shaped clamping seat; 15. fixed seat; 16. moving block; 17. moving rod; 18. stopper; 19. first spring; 20. anti-slip groove; 21. clamping groove; 22. connecting plate; 23. second spring. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4 The utility model provides a pin shaft positioning and punching device, comprising a U-shaped base 1, an arc-shaped placement groove is opened in the middle of the top surface of the U-shaped base 1, wherein the arc-shaped placement groove is for placing the pin shaft; two symmetrically distributed mounting seats 2 are fixed on the top surface of the U-shaped base 1, and movable rods 10 are slidably connected inside the two mounting seats 2, and arc-shaped abutment plates 3 are fixed on the ends of the two movable rods 10 that are close to each other, and reset parts that match the movable rods 10 are arranged inside the two mounting seats 2, and rotating shafts 5 are rotatably connected on both sides of the top surface of the U-shaped base 1, and cams 4 that match the movable rods 10 are fixed on the outer surface of the rotating shaft 5, wherein the cams 4 abut against the ends of the movable rods 10; and pressing mechanisms are arranged on both sides of the top surface of the U-shaped base 1 corresponding to the rotating shafts 5.

[0022] Further as Figure 1 and Figure 2 As shown, it is worth specifically explaining that the pressing mechanism includes a fixed seat 15 fixed to the top surface of the U-shaped base 1, a moving rod 17 is fixedly passed through the surface of the fixed seat 15, and the outer surface of the moving rod 17 is movably sleeved with three moving blocks 16, and a rack 7 is fixed on one side of the three moving blocks 16, and the outer surface of the rotating shaft 5 is fixedly sleeved with a gear 6, and the rack 7 is meshed with the gear 6 for transmission, and the outer surface of the moving rod 17 is movably sleeved with a second spring 23, one end of the second spring 23 is fixed to the surface of the fixed seat 15, and the other end of the second spring 23 is fixed to one of the moving blocks 16.

[0023] Further as Figure 3As shown, it is worth specifically explaining that the reset member includes a stopper 18 fixedly sleeved on the outer surface of the movable rod 10, and a movable groove matching with the stopper 18 is opened inside the mounting seat 2. The outer surface of the movable rod 10 is movably sleeved with a first spring 19 corresponding to the movable groove. One end of the first spring 19 is fixed to the stopper 18, and the other end of the first spring 19 is fixed to the inner wall of the movable groove. When the pin shaft is not placed, the first spring 19 pushes the stopper 18 to move, so that the movable rod 10 drives the arc-shaped abutment plate 3 away from the arc-shaped placement groove, which is easy to place the pin shaft and brings convenience to the staff's operation.

[0024] This scheme has the following working process: the staff limits the pin shaft by hand, and then performs the punching work of the pin shaft under the punching machine. However, such operation is unsafe and will also cause the pin shaft to be unstable, resulting in deviation in the pin shaft drilling and affecting the drilling quality of the pin shaft. By placing the pin shaft in the arc-shaped placement groove and then pushing the pull rod 9, the two connecting rods 8 are driven to move horizontally, thereby pushing the rack 7 to move horizontally, and then driving the gear 6 to rotate. The gear 6 drives the rotating shaft 5 to rotate on the U-shaped base 1, thereby driving the cam 4 to rotate. While the cam 4 rotates, the movable rod 10 is squeezed to move in the mounting seat 2. When the raised end on the cam 4 contacts the end of the movable rod 10, the movable rod 10 drives the arc-shaped abutment plate 3 to clamp and limit the pin shaft. At the same time, the second spring 23 pushes one of the moving blocks 16, so that the moving block 16 located in the middle abuts against the side of the fixed seat 15, thereby maintaining the stability of the rack 7 after movement.

[0025] According to the above working process, it can be known that: through the setting of the pressing mechanism, the cam 4 is driven to rotate and squeeze the movable rod 10 to move in the mounting seat 2, so that when the raised end on the cam 4 contacts the end of the movable rod 10, the movable rod 10 drives the arc-shaped pressing plate 3 to clamp and limit the pin shaft, thereby improving the stability of the pin shaft during punching and improving the safety of the staff during the punching operation. The second spring 23 makes one of the moving blocks 16 press against the fixed seat 15, thereby maintaining the stability of the rack 7 after movement, and further improving the stability of the pin shaft during the punching operation.

[0026] Further as Figure 1 and Figure 4 As shown, it is worth specifically explaining that a connecting rod 8 is fixed at the ends of the two racks 7, a pull rod 9 is fixed between the ends of the two connecting rods 8, a limiting mechanism is arranged on the top surface of the pull rod 9, and the limiting mechanism comprises a fixing plate 11 fixed to the top surface of the pull rod 9, a rectangular through hole is provided on one side of the fixing plate 11, a limiting rod 12 is fixed on the inner wall of the rectangular through hole, a movable plate 13 is movably sleeved on the outer surface of the limiting rod 12, an arc-shaped clamping seat 14 is fixed on one side of the movable plate 13, a clamping groove 21 is arranged on the bottom surface of the arc-shaped clamping seat 14, wherein the clamping groove 21 is clamped with the end of the pin shaft;

[0027] It is worth mentioning that after the pin is clamped and limited by the two arc-shaped abutment plates 3, the movable plate 13 is pulled down so that the groove 21 on the bottom surface of the arc-shaped clamping seat 14 is clamped on the end of the pin, thereby auxiliary limiting the pin and improving the stability of the pin in the horizontal direction; the movable plate 13 is limited by the limiting rod 12.

[0028] Further as Figure 1 and Figure 3 As shown, it is worth explaining in detail that the anti-skid grooves 20 are evenly provided on the side where the two arc-shaped abutment plates 3 are close to each other, and the anti-skid grooves 20 improve the stability of the arc-shaped abutment plates 3 when clamping the pin shaft; connecting plates 22 are fixed on both sides of the U-shaped base 1, and two connecting holes are provided on the top surface of the connecting plate 22, and the connecting holes on the connecting plate 22 are used to facilitate fixing the entire device on a horizontal workbench.

[0029] In summary: through the setting of the pressing mechanism, the cam 4 is driven to rotate and squeeze the movable rod 10 to move in the mounting seat 2, so that when the raised end on the cam 4 contacts the end of the movable rod 10, the movable rod 10 drives the arc-shaped pressing plate 3 to clamp and limit the pin shaft, thereby improving the stability of the pin shaft during punching and improving the safety of the staff during punching operations. The second spring 23 makes one of the movable blocks 16 press against the fixed seat 15, thereby maintaining the stability of the rack 7 after movement, and further improving the stability of the pin shaft during punching operations. After the pin shaft is clamped and limited by the two arc-shaped pressing plates 3, the movable plate 13 is pulled down so that the groove 21 on the bottom surface of the arc-shaped clamping seat 14 is clamped on the end of the pin shaft, thereby auxiliary limiting the pin shaft and improving the stability of the pin shaft during punching.

[0030] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A pin positioning and punching device, comprising a U-shaped base (1), characterized in that: An arc-shaped placement groove is provided in the middle of the top surface of the U-shaped base (1); two symmetrically distributed mounting seats (2) are fixed to the top surface of the U-shaped base (1); movable rods (10) are slidably connected inside the two mounting seats (2); arc-shaped abutment plates (3) are fixed to the ends of the two movable rods (10) that are close to each other; reset parts that match the movable rods (10) are provided inside the two mounting seats (2); rotating shafts (5) are rotatably connected to the two sides of the top surface of the U-shaped base (1); cams (4) that match the movable rods (10) are fixed to the outer surface of the rotating shaft (5); and pressing mechanisms are provided on the corresponding rotating shafts (5) on both sides of the top surface of the U-shaped base (1).

2. A pin positioning and punching device according to claim 1, characterized in that: The pressing mechanism comprises a fixed seat (15) fixed to the top surface of the U-shaped base (1), a moving rod (17) fixedly penetrates the surface of the fixed seat (15), three moving blocks (16) are movably sleeved on the outer surface of the moving rod (17), a rack (7) is fixed on one side of the three moving blocks (16), a gear (6) is fixedly sleeved on the outer surface of the rotating shaft (5), the rack (7) and the gear (6) are meshed for transmission, a second spring (23) is movably sleeved on the outer surface of the moving rod (17), one end of the second spring (23) is fixed to the surface of the fixed seat (15), and the other end of the second spring (23) is fixed to one of the moving blocks (16).

3. A pin positioning and punching device according to claim 2, characterized in that: The reset member comprises a stopper (18) fixedly sleeved on the outer surface of the movable rod (10); a movable groove matching with the stopper (18) is provided inside the mounting seat (2); a first spring (19) is movably sleeved on the outer surface of the movable rod (10) corresponding to the movable groove; one end of the first spring (19) is fixed to the stopper (18), and the other end of the first spring (19) is fixed to the inner wall of the movable groove.

4. A pin positioning and punching device according to claim 2, characterized in that: A connecting rod (8) is fixed at the ends of the two racks (7), a pull rod (9) is fixed between the ends of the two connecting rods (8), and a limiting mechanism is provided on the top surface of the pull rod (9).

5. A pin positioning and punching device according to claim 4, characterized in that: The limiting mechanism comprises a fixing plate (11) fixed to the top surface of the pull rod (9), a rectangular through hole is provided on one side of the fixing plate (11), a limiting rod (12) is fixed on the inner wall of the rectangular through hole, a movable plate (13) is movably sleeved on the outer surface of the limiting rod (12), an arc-shaped clamping seat (14) is fixed on one side of the movable plate (13), and a clamping groove (21) is provided on the bottom surface of the arc-shaped clamping seat (14).

6. A pin positioning and punching device according to claim 1, characterized in that: The two arc-shaped abutment plates (3) are evenly provided with anti-slip grooves (20) on the adjacent sides, and connecting plates (22) are fixed on both sides of the U-shaped base (1), and the top surface of the connecting plate (22) is provided with two connecting holes.

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