Mechanical force amplification cylinder and a stamping device

Abstract

This utility model relates to a mechanical force-multiplying cylinder and a stamping device, including a housing, a cylinder body, a wedge flange, a piston assembly, and a force-multiplying mechanism; the cylinder body is connected to one end of the housing; the wedge flange is disposed in the housing; the piston assembly includes an active piston and a driven piston movably connected in the cylinder body, and a tapered rod is connected to the active piston; the force-multiplying mechanism includes a fixed frame, which is coaxially connected to the driven piston, and the fixed frame has a central through hole and mounting slots arranged circumferentially around it, each mounting slot is rotatably connected to a hinge frame, and each hinge frame is rotatably connected to two needle roller bearings; this mechanical force-multiplying cylinder, by setting a mechanical force-multiplying mechanism in the cylinder body, achieves an increase in the output force of the cylinder without enlarging the cylinder body, which not only saves space, but also reduces production costs compared to using a large-diameter cylinder.

Description

Technical Field

[0001] This utility model relates to the field of cylinder technology, and in particular to a mechanical power-boosting cylinder and a stamping device. Background Technology

[0002] Cylinders are commonly used power components in mechanical equipment. They can convert the pressure energy of compressed air into mechanical energy to drive mechanisms to achieve reciprocating linear motion, oscillation, or rotation.

[0003] In the field of machining, cylinders are often used to provide driving force for some stamping processes. However, traditional cylinders have relatively small impact force. To meet process requirements, cylinders with large diameters need to be selected, which takes up a lot of space and increases processing costs. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the traditional cylinder in the prior art has a small impact force, and in order to meet the process requirements, it is necessary to select a cylinder with a large cylinder diameter, which occupies a large space and increases the processing cost.

[0005] To solve the above-mentioned technical problems, this utility model provides a mechanical booster cylinder, comprising,

[0006] The housing includes a front housing and a rear housing connected coaxially. The front housing and the rear housing are respectively provided with a first through hole and a second through hole, and the ends of the front housing and the rear housing connected are respectively provided with a first stepped groove and a second stepped groove.

[0007] The cylinder body is a cylindrical structure with one end open, and the open end of the cylinder body is coaxially connected to the end of the rear housing that is away from the front housing.

[0008] A wedge-shaped flange is coaxially disposed on the second stepped groove, and the side of the wedge-shaped flange facing the first stepped groove is a wedge-shaped surface;

[0009] A piston assembly includes an active piston and a driven piston that are movably connected to a cylinder. The driven piston is located on the side near the rear housing. A tapered rod is coaxially connected to the active piston on the side facing the driven piston. A through hole is coaxially opened on the driven piston for the tapered rod to pass through.

[0010] A force-enhancing mechanism includes a fixed frame, a hinge frame, and needle roller bearings. The fixed frame is coaxially connected to the side of the driven piston away from the driving piston. A central through hole is coaxially opened on the fixed frame, and multiple mounting slots arranged circumferentially and connected to the central through hole are opened on the side of the fixed frame. A hinge frame is rotatably connected in each mounting slot, and two needle roller bearings are rotatably connected on each hinge frame.

[0011] The piston rod is slidably connected in the first through hole and connected to the fixing frame.

[0012] In one embodiment of the present invention, a pin is vertically arranged between the two inner walls of each mounting groove. The hinge frame is L-shaped and includes a first section and a second section that are perpendicular to each other. The first section is rotatably connected to the pin. A through groove extending along its length is opened on the second section. Two needle roller bearings arranged at intervals along their length are rotatably connected in the through groove.

[0013] In one embodiment of this utility model, a mounting hole is vertically formed on the second section, and a bearing is provided in the mounting hole, the bearing being rotatably connected to the pin.

[0014] In one embodiment of the present invention, a buffer assembly is included, the buffer assembly including a guide rod and a buffer pad, one end of the guide rod coaxially passes through the active piston and the tapered rod and extends into the central through hole and is connected to the fixing frame, and the other end is connected to the buffer pad.

[0015] In one embodiment of this utility model, a clearance groove coaxial with the guide rod is provided at the bottom of the cylinder body.

[0016] In one embodiment of this utility model, the cushioning pad is made of a soft material.

[0017] In one embodiment of this utility model, the outer diameter of the tapered rod gradually increases from one end near the front housing to the other end.

[0018] In one embodiment of the present invention, the cylinder body includes a cylinder shell and an end cap. The end cap is coaxially connected to the rear housing away from the front housing by multiple long bolts. The cylinder shell is a tubular structure. The two ends of the cylinder shell are connected between the end cap and the rear housing. A sealing ring is provided between the cylinder shell and the end cap and the rear housing.

[0019] In one embodiment of the present invention, a guide bushing is installed in the first through hole, and the piston rod is slidably connected to the guide bushing.

[0020] A stamping device comprising a mechanical booster cylinder as described in any of the preceding claims.

[0021] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0022] This utility model discloses a mechanical force-multiplying cylinder and stamping equipment, comprising a housing, a cylinder body, a wedge flange, a piston assembly, and a force-multiplying mechanism. The cylinder body is connected to one end of the housing; the wedge flange is disposed within the housing; the piston assembly includes an active piston and a driven piston movably connected to the cylinder body, with a tapered rod connected to the active piston; the force-multiplying mechanism includes a fixed frame, coaxially connected to the driven piston, and the fixed frame has a central through hole and mounting slots arranged circumferentially around it, with a hinge frame rotatably connected to each mounting slot, and two needle roller bearings rotatably connected to each hinge frame; this mechanical force-multiplying cylinder, by setting a mechanical force-multiplying mechanism in the cylinder body, achieves an increase in cylinder output force without enlarging the cylinder body, which not only saves space but also reduces production costs compared to using a large-diameter cylinder. Attached Figure Description

[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of the mechanical booster cylinder according to a preferred embodiment of the present invention;

[0025] Figure 2 This is an exploded view of the mechanical booster cylinder according to a preferred embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the force-multiplying mechanism of the mechanical force-multiplying cylinder of the preferred embodiment of the present invention acting on the wedge-shaped flange.

[0027] Explanation of reference numerals in the accompanying drawings: 1. Housing; 11. Front housing; 111. First step groove; 12. Rear housing; 121. Second step groove; 2. Cylinder body; 21. Cylinder shell; 22. End cap; 3. Wedge flange; 31. Wedge surface; 4. Piston assembly; 41. Driving piston; 42. Driven piston; 43. Tapered rod; 5. Force amplification mechanism; 51. Fixing frame; 511. Mounting groove; 52. Hinge frame; 53. Needle roller bearing; 54. Pin; 6. Piston rod; 7. Buffer assembly; 71. Guide rod; 72. Buffer pad. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0029] Example 1: Refer to Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a mechanical booster cylinder, comprising:

[0030] The housing 1 includes a front housing 11 and a rear housing 12 coaxially connected. The front housing 11 and the rear housing 12 are respectively provided with a first through hole and a second through hole, and the ends of the front housing 11 and the rear housing 12 connected are respectively provided with a first stepped groove 111 and a second stepped groove 121 coaxially.

[0031] The cylinder body 2 is a cylindrical structure with one end open. The open end of the cylinder body 2 is coaxially connected to the end of the rear housing 12 that is away from the front housing 11.

[0032] The wedge flange 3 is coaxially disposed on the second stepped groove 121, and the side of the wedge flange 3 facing the first stepped groove 111 is the wedge-shaped surface 31;

[0033] Piston assembly 4 includes an active piston 41 and a driven piston 42 that are movably connected to the cylinder 2. The driven piston 42 is located on the side close to the rear housing 12. A tapered rod 43 is coaxially connected to the active piston 41 facing the driven piston 42. A through hole is coaxially opened on the driven piston 42 for the tapered rod 43 to pass through.

[0034] The force-enhancing mechanism 5 includes a fixed frame 51, a hinge frame 52, and a needle roller bearing 53. The fixed frame 51 is coaxially connected to the side of the driven piston 42 away from the driving piston 41. A central through hole is coaxially opened on the fixed frame 51, and multiple mounting slots 511 are opened on the side of the fixed frame 51, which are arranged circumferentially and connected to the central through hole. A hinge frame 52 is rotatably connected in each mounting slot 511, and two needle roller bearings 53 are rotatably connected on each hinge frame 52.

[0035] The piston rod 6 is slidably connected in the first through hole and connected to the fixing bracket 51.

[0036] Initially, the force-amplifying mechanism 5 is located in the cylinder 2. At this time, each hinge frame 52 and the needle roller bearings 53 mounted on it are located between the inner wall of the cylinder 2 and the fixed frame 51. The second section of each hinge frame 52 is tilted (the height of the outer needle roller bearing 53 is higher than the height of the inner needle roller bearing 53, and the outer needle roller bearing 53 rolls in contact with the side wall of the cylinder 2). When air is supplied to the cylinder 2, the compressed gas pushes the active piston 41 to rise (relative to the end cover 22). The active piston 41 compresses the space between itself and the driven piston 42, causing the driven piston 42 to also drive the force-amplifying mechanism 5 mounted on it to move upwards. During the upward movement of the two pistons, especially in the final stroke, the tapered rod 43 on the active piston 41 passes through the through hole on the driven piston 42. As the tapered rod 43 gradually extends into the central through hole of the fixed frame 51, its side surface contacts the inner needle roller bearings 53. When the driven piston 42 drives the force-increasing mechanism 5 to a position close to the wedge flange 3, the inner needle roller bearings 53 move upward under the push of the tapered surface of the needle roller bearings 53, causing the entire hinge frame 52 to rotate. This causes the free end of the second section of the hinge frame 52 to turn outward into the first step groove 111, and the outer needle roller bearings 53 contact the wedge-shaped surface (sloping surface) of the wedge flange 3. The further rising tapered rod 43 continues to push the inner needle roller bearings 53 to rise, thus acting as a lever to apply assistance to the fixed frame 51 and the piston rod 6 connected to it, achieving the effect of mechanical force amplification.

[0037] Specifically, after the front housing 11 and the rear housing 12 are connected, a space with an inner diameter larger than the first through hole / second through hole is formed between the first step groove 111 and the second step groove 121. This space is used to provide installation space for the wedge flange 3, and also provides lateral movement space for the hinge frame 52 and needle roller bearing 53 of the force-enhancing mechanism 5. At the same time, it can also limit the position of the fixed frame 51.

[0038] This utility model discloses a mechanical force-increasing cylinder. By setting a mechanical force-increasing mechanism in the cylinder body, it achieves an increase in the output force of the cylinder without expanding the cylinder body. This not only saves space, but also reduces production costs compared to using a large-diameter cylinder.

[0039] Furthermore, a pin 54 is vertically arranged between the two inner walls of each mounting slot 511. The hinge frame 52 is L-shaped, including a first section and a second section that are perpendicular to each other. The first section is rotatably connected to the pin 54, and the second section has a through groove extending along its length. Two needle roller bearings 53 arranged at intervals along their length are rotatably connected in the through groove. In this embodiment, three mounting slots 511 are provided, and the hinge frame 52 is rotatably connected to each mounting slot 511 through the pin 54. The hinge frame 52 can rotate around the pin 54, so that the section with the needle roller bearings 53 can be flipped out of the mounting slot 511 or retracted into the mounting slot 511.

[0040] Furthermore, a mounting hole is vertically opened on the second section, and a bearing is installed in the mounting hole. The bearing is rotatably connected to the pin 54.

[0041] Furthermore, a buffer assembly 7 is included, comprising a guide rod 71 and a buffer pad 72. One end of the guide rod 71 coaxially passes through the active piston 41 and the tapered rod 43, extending into the central through hole and connecting to the fixed frame 51. The other end is connected to the buffer pad 72. Specifically, when the cylinder completes its action and resets, the air source connected to the cylinder body 2 supplies air in the reverse direction. The active piston 41 falls back first and pulls the driven piston 42 through the guide rod 71, causing the entire force-multiplying mechanism 5 to fall back to its initial position, thus completing one action cycle.

[0042] Furthermore, a clearance groove coaxial with the guide rod 71 is provided at the bottom of the cylinder body 2. It can be imagined that after the guide rod 71 is connected to the buffer pad 72, the end of the guide rod 71 will extend beyond the buffer pad 72 by a certain length. Therefore, the clearance groove on the end cover 22 can prevent the guide rod 71 from colliding with the end cover 22 during the cylinder reset process, thus playing a protective role.

[0043] Furthermore, the buffer pad 72 is made of a soft material. The buffer pad 72 can act as a cushion, preventing the falling piston from colliding hard with the end cap 22, which helps to improve the service life of the device.

[0044] Furthermore, the outer diameter of the tapered rod 43 gradually increases from one end near the front housing 11 to the other end.

[0045] Furthermore, the cylinder body 2 includes a cylinder shell 21 and an end cover 22. The end cover 22 is coaxially connected to the rear housing 12 away from the front housing 11 by multiple long bolts. The cylinder shell 21 is a tubular structure. The two ends of the cylinder shell 21 are connected between the end cover 22 and the rear housing 12, and sealing rings are provided between the cylinder shell 21 and the end cover 22 and the rear housing 12.

[0046] Furthermore, a guide bushing is installed in the first through hole, and the piston rod 6 is slidably connected in the guide bushing.

[0047] Example 2: This utility model also discloses a stamping device, including a mechanical booster cylinder as in Example 1.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A force boosting cylinder, characterized by: include, The housing includes a front housing and a rear housing connected coaxially. The front housing and the rear housing are respectively provided with a first through hole and a second through hole, and the ends of the front housing and the rear housing connected are respectively provided with a first stepped groove and a second stepped groove. The cylinder body is a cylindrical structure with one end open, and the open end of the cylinder body is coaxially connected to the end of the rear housing that is away from the front housing. A wedge-shaped flange is coaxially disposed on the second stepped groove, and the side of the wedge-shaped flange facing the first stepped groove is a wedge-shaped surface; A piston assembly includes an active piston and a driven piston that are movably connected to a cylinder. The driven piston is located on the side near the rear housing. A tapered rod is coaxially connected to the active piston on the side facing the driven piston. A through hole is coaxially opened on the driven piston for the tapered rod to pass through. A force-enhancing mechanism includes a fixed frame, a hinge frame, and needle roller bearings. The fixed frame is coaxially connected to the side of the driven piston away from the driving piston. A central through hole is coaxially opened on the fixed frame, and multiple mounting slots arranged circumferentially and connected to the central through hole are opened on the side of the fixed frame. A hinge frame is rotatably connected in each mounting slot, and two needle roller bearings are rotatably connected on each hinge frame. The piston rod is slidably connected in the first through hole and connected to the fixing frame.

2. The force boosting mechanical cylinder according to claim 1, characterized in that: A pin is vertically arranged between the two inner walls of each mounting slot. The hinge frame is L-shaped and includes a first section and a second section that are perpendicular to each other. The first section is rotatably connected to the pin. A through slot extending along its length is opened on the second section. Two needle roller bearings arranged at intervals along their length are rotatably connected in the through slot.

3. The force boosting cylinder according to claim 2, characterized in that: A mounting hole is vertically opened on the second section, and a bearing is installed in the mounting hole. The bearing is rotatably connected to the pin.

4. The force boosting cylinder according to claim 1, characterized by: The device includes a buffer assembly, which includes a guide rod and a buffer pad. One end of the guide rod coaxially passes through the active piston and the tapered rod, extends into the central through hole, and is connected to the fixing frame. The other end is connected to the buffer pad.

5. The force boosting cylinder according to claim 4, characterized in that: The bottom of the cylinder is provided with a clearance groove that is coaxial with the guide rod.

6. The force boosting cylinder according to claim 4, characterized in that: The cushioning pad is made of soft material.

7. The force boosting cylinder according to claim 1, characterized by: The outer diameter of the tapered rod gradually increases from one end near the front housing to the other.

8. The force boosting cylinder according to claim 1, characterized by: The cylinder body includes a cylinder shell and an end cap. The end cap is coaxially connected to the rear housing at the end away from the front housing by multiple long bolts. The cylinder shell is a tubular structure. Both ends of the cylinder shell are connected between the end cap and the rear housing. A sealing ring is provided between the cylinder shell and the end cap and the rear housing.

9. The force boosting cylinder according to claim 1, characterized by: A guide bushing is installed in the first through hole, and the piston rod is slidably connected in the guide bushing.

10. A stamping apparatus characterized by: Including the mechanical booster cylinder as described in any one of claims 1-9.

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