A punching device for cylinder fitting production

Abstract

The application relates to the technical field of stamping equipment, and provides a stamping equipment for cylinder accessory production, which comprises a stamping rack, an upper die mechanism, a transmission mechanism, a side hole sliding block, a side recess sliding block, an annular groove side pushing sliding block, a lower convex die and a material ejection ring. The upper die mechanism comprises a downward stretching module and a stamping module, the stamping module is elastically connected to the stamping rack, the stamping module is used for fixing a thin plate piston on the surface of the lower convex die, the transmission mechanism comprises a cam, a rotating disc and a transmission connecting rod, the transmission connecting rod is hinged between the cam and the downward stretching module, the rotating disc is rotationally arranged on the surface of the lower convex die, the cam is in transmission connection with the rotating disc, and a plurality of groups of arc-shaped guide rails are arranged on the surface of the rotating disc. In the process of stretching and forming the main body by using the upper die mechanism, the annular groove side pushing sliding block, the side hole sliding block and the side recess sliding block can be synchronously formed with the annular groove, the side hole and the side recess features by the transmission connecting rod, the cam and the rotating disc, and the stamping equipment has the characteristics of small occupied space, low investment cost and high work efficiency.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, and more specifically to a stamping equipment for the production of cylinder parts. Background Technology

[0002] Reference Appendix Figure 2 As a component of small and medium-sized cylinders, thin-plate pistons need to fit precisely with the inner wall of the cylinder. They often have sealing ring grooves, guide ring mounting grooves, or weight reduction holes. They are made of aluminum alloy thin plates or low-carbon steel plates and are generally formed by stamping.

[0003] A search revealed that publication number CN117206425B discloses a stamping device for cylinder gaskets, including a processing table. An operating table is fixedly mounted on the surface of the processing table. Base columns are fixedly connected to the four corners of the bottom of the processing table, and a fixing rod is fixedly connected between the base columns. A guide rail is mounted on the surface of the processing table, and a shelf is slidably connected to the guide rail. Storage slots are arrayed on the shelf, and a pair of support columns are fixedly connected to the processing table. The operation of a second motor facilitates the rotation of a gear plate, causing the shelf to move and place the gasket raw material into the storage slots. The movement of the shelf then transfers the raw material from the storage slots to the bottom of the stamping ring for stamping.

[0004] Although the above cylinder gasket stamping device can achieve automated stamping, it still has the following defects: (1) During the stamping and stretching process of the thin plate piston body, it is impossible to simultaneously complete the forming of the annular groove, side hole and side concave features. Only the traditional multi-station stamping method can be used. This method will increase the space occupied by the equipment on the one hand, and increase the investment cost of hydraulic or electric components on the other hand; (2) After the thin plate piston body is formed, the upper mold needs to be separated from the lower mold in order to continue to form the annular groove, side hole and side concave features. During the process of the upper mold being separated from the lower mold, the thin plate piston body is easily carried out of the lower mold by the upper mold. In order to avoid this problem, a robot arm is needed to assist in positioning the thin plate piston body, which further increases the space occupied by the equipment and the investment cost. Summary of the Invention

[0005] The purpose of this invention is to provide a stamping device for the production of cylinder parts, which aims to solve the problems existing in the existing stamping devices.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a stamping equipment for the production of cylinder parts, comprising a stamping frame, a lower punch, and an ejector ring, wherein the lower punch is fixedly disposed within the stamping frame, and the ejector ring is elastically disposed on the stamping frame, and further comprising:

[0007] The upper die mechanism includes a lower pressing and stretching module and a stamping module. The stamping module is elastically connected to the upper part of the stamping frame. The stamping module is used to fix the thin plate piston to the surface of the lower punch. The lower pressing and stretching module can control the stamping module to perform upward movement.

[0008] The transmission mechanism includes a cam, a turntable, and a transmission link. The transmission link is hinged between the cam and the lower pressing and stretching module. The turntable is rotatably mounted on the surface of the lower punch. The cam is connected to the turntable in a transmission manner. The surface of the turntable is provided with several sets of arc-shaped guide rails.

[0009] The four sets of annular groove side push sliders are slidably disposed within the arc-shaped guide rail;

[0010] A side-hole slider that is fixedly connected to one of the sets of annular groove side-push sliders;

[0011] A side-concave slider is slidably set within one of the sets of arc-shaped guide rails.

[0012] The beneficial effects of the present invention are: (1) In the process of stretching and forming the main body using the upper mold mechanism, the cam and the rotating disk can be controlled to rotate by the transmission link, and then the annular groove side push slider, side hole slider and side concave slider are pushed radially by the arc guide rail to simultaneously form the annular groove, side hole and side concave features. Compared with the traditional multi-station distribution processing method, it has the characteristics of small space occupation, low investment cost and high work efficiency.

[0013] (2) In this application, the pressure of the pressure spring and the weight of the upper punch can not only eliminate the need for an independent cylinder to complete the forming of the groove and top hole features, but also automatically limit the workpiece before forming the annular groove, side hole and side concave features, thus having the characteristics of high structural utilization. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention.

[0015] Figure 2 This is a perspective view of a thin-plate piston in the prior art.

[0016] Figure 3 This is an exploded view of the upper mold mechanism in an embodiment of the present invention.

[0017] Figure 4 This is a perspective view of the stamping frame and lower punch according to an embodiment of the present invention.

[0018] Figure 5 This is a longitudinal sectional view of the stamping frame and lower punch according to an embodiment of the present invention.

[0019] Figure 6 This is an assembly diagram of the upper mold mechanism and the transmission mechanism in an embodiment of the present invention.

[0020] Figure 7 This is an assembly diagram of the annular groove side push slider, side hole slider, side concave slider and turntable in an embodiment of the present invention.

[0021] Figure 8 This is a cross-sectional view of the thin-plate piston body stretch forming process according to the present invention.

[0022] Figure 9 This is a top view of the invention from the limiting interlayer.

[0023] Figure 10 This is a cross-sectional view of the annular groove, side hole, and side concave structure formed by the present invention using an annular groove side push slider, side hole slider, and side concave slider.

[0024] Figure 11 This is a front view of the material being fed using the top material ring in this invention.

[0025] Figure 12 This is a motion trajectory diagram of transmission gear one relative to transmission gear two in an embodiment of the present invention.

[0026] Reference numerals: 1-Upper mold mechanism, 11-Lower pressing and stretching module, 111-Punching cylinder, 112-Upper die, 12-Punching module, 121-Upper punch, 122-Punching cutter head, 123-Balance bar, 124-Top plate, 125-Pressure spring;

[0027] 2-Pressing frame, 21-Pressing table, 22-Limiting interlayer;

[0028] 3-Lower punch, 31-Ejection hole one, 32-Ejection hole two, 33-Sealing cavity, 34-Ventilation hole;

[0029] 4-Top ring, 41-Top rod, 42-Top spring, 43-Piston ring;

[0030] 5-Transmission mechanism, 51-Transmission link, 52-Cam, 53-Transmission gear one, 54-Turntable, 55-Arc guide rail, 56-Transmission gear two;

[0031] 6- Annular groove side pusher slider, 61- Movable pin 1, 62- Return spring;

[0032] 7-Side hole slider;

[0033] 8-Side concave slider, 81-Modible pin two;

[0034] 9-Thin plate piston;

[0035] 10-Plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0038] Please see Figures 1 to 12 In one embodiment of the present invention, a stamping device for producing cylinder parts includes a stamping frame 2, a lower punch 3, and an ejector ring 4. The lower punch 3 is fixedly disposed within the stamping frame 2, and the ejector ring 4 is elastically disposed on the stamping frame 2. The device also includes:

[0039] Upper die mechanism 1 includes a lower pressing and stretching module 11 and a stamping module 12. The lower pressing and stretching module 11 includes a stamping cylinder 111 and an upper die 112. The fixed end of the stamping cylinder 111 is fixedly connected to the stamping frame 2, and the upper die 112 is fixedly connected to the movable end of the stamping cylinder 111. The transmission connecting rod 51 is hinged to one side of the upper die 112. The stamping module 12 includes an upper punch 121, a punching cutter head 122, a balance bar 123, a top plate 124, and a pressure spring 125. The punching cutter head 122 is fixedly mounted on the surface of the upper punch 121. The balance bar 123 is fixedly disposed between the top plate 124 and the upper punch 121. The pressure spring 125 is connected between the stamping frame 2 and the top plate 124. The balance bar 123 passes through the upper die 112. The stamping module 12 is used to fix the thin plate piston 9 to the surface of the lower punch 3. The lower pressing and stretching module 11 can control the stamping module 12 to perform upward movement. The stamping module 12 can form the countersunk groove and top hole features above the workpiece on the one hand, and ensure that the workpiece remains stationary at the lower punch 3 before forming the lateral annular groove, side hole and side concave features on the other hand.

[0040] The transmission mechanism 5 includes a first transmission gear 53, a second transmission gear 56, a cam 52, a turntable 54, and a transmission connecting rod 51. The transmission connecting rod 51 is hinged between the cam 52 and the lower pressing and stretching module 11. The turntable 54 is rotatably mounted on the surface of the lower punch 3. The cam 52 is connected to the turntable 54 in a transmission manner. The surface of the turntable 54 is provided with several sets of arc-shaped guide rails 55. The cam 52 and the first transmission gear 53 are coaxially connected. The second transmission gear 56 is fixedly mounted on the surface of the turntable 54. The first transmission gear 53 and the second transmission gear 56 are connected in a transmission manner. The first transmission gear 53 is a sector gear with a central angle of 50 degrees or 60 degrees.

[0041] The four sets of annular groove side push sliders 6 are slidably disposed within the arc-shaped guide rail 55.

[0042] The side hole slider 7 is fixedly connected to one of the annular groove side push sliders 6;

[0043] A side concave slider 8 is slidably disposed within one set of arc-shaped guide rails 55. The annular groove side push slider 6 and the side concave slider 8 are respectively fixedly provided with movable pin 1 61 and movable pin 2 81. The movable pin 1 61 and movable pin 2 81 are slidably disposed within the arc-shaped guide rails 55. The side hole slider 7 is fixedly disposed on the surface of movable pin 1 61.

[0044] The stamping frame 2 is fixedly equipped with a stamping table 21 and a limiting interlayer 22. The annular groove side push slider 6, the side hole slider 7, and the side concave slider 8 are all in sliding contact with the limiting interlayer 22. The limiting interlayer 22 is used to guide the annular groove side push slider 6, the side hole slider 7, and the side concave slider 8 to make radial or linear movements. A return spring 62 is connected between the annular groove side push slider 6 and the limiting interlayer 22. The four sets of annular array of annular groove side push sliders 6 are used to form annular groove structures on the surface of the thin plate piston (workpiece). When the sector gear disengages from the transmission gear 56, the return spring 62 is used to control the annular groove side push slider 6, the turntable 54, the side hole slider 7, and the side concave slider 8 to return to their original positions.

[0045] In this embodiment of the invention, the lifting motion trajectory in the stamping process of the upper mold mechanism 1 is converted into the counterclockwise rotational motion of the transmission gear 53, the transmission gear 56 and the turntable 54 through the transmission link 51 and the cam 52. The rotating turntable 54 drives the annular groove side push slider 6, the side hole slider 7 and the side concave slider 8 to make radial movements through the sliding connection between the arc-shaped guide rail 55 and the movable pin 61 and the movable pin 81. Compared with the traditional multi-station distributed processing method, the work efficiency is improved. The arc-shaped guide rail 55, which is slidably connected to the movable pin 61 and the movable pin 81, has the same size to ensure the consistency of the radial movement distance of the annular groove side push slider 6, the side hole slider 7 and the side concave slider 8. The annular groove, side hole and side concave structure of the required size can be formed by precisely controlling the size of the annular groove side push slider 6, the side hole slider 7 and the side concave slider 8.

[0046] Please see Figure 5 and Figure 11 In another embodiment of the present invention, the top and sidewall of the lower punch 3 are respectively provided with a discharge hole 31 and a discharge hole 32, and a sealing cavity 33 is provided inside the lower punch 3. The sealing cavity 33 is provided with an exhaust hole 34 that penetrates the lower punch 3. The downwardly inclined exhaust hole 34 is distributed below the discharge hole 32.

[0047] Furthermore, a push rod 41 is fixedly installed below the push ring 4, the push rod 41 penetrates the sealing cavity 33, a piston ring 43 is slidably installed on the inner wall of the sealing cavity 33, the push rod 41 is fixedly connected to the piston ring 43, and a push spring 42 is connected between the push ring 4 and the lower punch 3.

[0048] In this embodiment of the invention, when the stamping drives the top ring 4 to move downward and the spring force release of the top ring 42 drives the top ring 4 to move upward, the piston ring 43 can be driven by the top rod 41 to compress the air in the sealing cavity 33. The high-speed airflow that intermittently passes through the upper and lower sets of exhaust holes 34 generates a negative pressure zone through the inclined hole, which can prevent the waste material from getting stuck.

[0049] The stamping process is as follows:

[0050] S100, Reference Appendix Figure 12 In the initial state, the transmission gear 1 53 deviates counterclockwise from the position of the transmission gear 2 56. The material plate 10 is transported to the lower punch 3 or the top ring 4 by the conveying mechanism. During the process of the upper die 112 being lowered by the stamping cylinder 111 to contact the material plate 10, the downward pressure of the pressure spring 125 and the gravity of the upper punch 121 drive the punching head 122 to contact the material plate 10. During the process of the upper die 112 being stretched and formed on the surface of the lower punch 3 by the stamping cylinder 111, the downward pressure of the upper die 112 can control the upper punch 121 and the punching head 122 to stamp the groove and top hole features from the top on the thin plate piston 9. At this time, the top ring 4 is pressed down to the bottom by the upper die 112. The entire downward stretching and forming stroke drives the transmission gear 1 53 to rotate 180 degrees counterclockwise through the transmission link 51 and the cam 52. The top spring 42 is in a compressed state, and the top ring 4 is compressed to the lowest point.

[0051] S200: Using the stamping cylinder 111, the upper die 112 is raised to a certain distance above the thin plate piston 9. Because the combined force of the downward force of the pressure spring 125, the weight of the upper punch 121, and the weight of the thin plate piston 9 (hereinafter referred to as the workpiece) is greater than the upward force of the ejector spring 42, the thin plate piston 9 can remain stationary at the lower punch 3. (Refer to Appendix) Figure 12 During the stroke in which the upper die 112 is completely detached from the workpiece and contacts the top plate 124, the transmission gear 53 can be driven to rotate counterclockwise by 60 degrees via the transmission link 51 and cam 52. (See attached diagram) Figure 10 and 11When the upper die 112 moves to the position of the workpiece annular groove, the first transmission gear 53 begins to mesh with the second transmission gear 56. The counterclockwise rotating first transmission gear 53 drives the turntable 54 to rotate through the transmission connection with the second transmission gear 56. The rotating turntable 54 drives the annular groove side push slider 6, the side hole slider 7 and the side concave slider 8 to move radially through the sliding connection between the arc guide rail 55 and the movable pin 61 and the movable pin 81. The annular groove side push slider 6, the side hole slider 7 and the side concave slider 8 are respectively formed with annular groove, side hole and side concave structure on the surface of the thin plate piston 9. The waste generated during the forming of the top hole and the side hole enters the lower punch 3 through the unloading hole 31 and the unloading hole 32 respectively. At this time, the return spring 62 is in the stretched state.

[0052] S300, Reference Appendix Figure 12 When the stamping cylinder 111 simultaneously controls the upper die 112 and the top plate 124 to rise and reset, it can drive the transmission gear 1 53 to rotate counterclockwise to the initial position through the transmission link 51 and the cam 52. Since the transmission gear 1 53 is disengaged from the transmission gear 2 56, the reverse elastic force of the reset spring 62 drives the annular groove side push slider 6 and the side hole slider 7 to move in the opposite direction. The reverse-moving annular groove side push slider 6 drives the turntable 54 to rotate in the opposite direction through the sliding connection of the movable pin 1 61 and the arc guide rail 55. The reverse-rotating turntable 54 drives the side concave slider 8 to move in the opposite direction through the movable pin 2 81.

[0053] S400, Reference Appendix Figure 11 The upward force of the top spring 42 drives the workpiece to rise into the plane of the stamping table 21 through the top ring 4. When the conveying mechanism controls the material plate 10 to move forward, it can push the workpiece horizontally downward. (See attached figure) Figure 5 During the stamping process, the reciprocating ejector ring 4 drives the piston ring 43 to compress air in the sealed cavity 33 through the ejector rod 41. The compressed high-pressure gas is discharged obliquely downward into the lower punch 3 through the upper and lower sets of exhaust holes 34 in sequence. The negative pressure effect in Bernoulli's principle is used to prevent the scrap from getting stuck in the lower punch 3 (ejector hole 1 31 or ejector hole 2 32).

[0054] In summary, during the stretching and forming of the main body using the upper mold mechanism 1, this application can also control the rotation of the cam 52 and the rotating disk through the transmission linkage 51, and then drive the annular groove side push slider 6, the side hole slider 7 and the side concave slider 8 radially through the arc guide rail 55 to simultaneously form the annular groove, side hole and side concave features. Compared with the traditional multi-station distributed processing method, it has the characteristics of small space occupation, low investment cost and high work efficiency.

[0055] In this application, the pressure of the pressure spring 125 and the weight of the upper punch 121 not only eliminate the need for a separate cylinder to complete the forming of the groove and top hole features, but also automatically limit the workpiece before forming the annular groove, side hole and side concave features, thus having the characteristics of high structural utilization.

[0056] During the stamping process, this application can not only convert mechanical energy into an anti-jamming air source through the ejector ring 4, but also prevent scrap from getting stuck by the negative pressure area generated by the downwardly inclined exhaust hole 34. After stamping, the ejector ring 4 can be driven by the upward elastic force of the return spring 62 to push the workpiece out from the surface of the lower punch 3. It has the characteristics of structural reuse, energy recovery and anti-jamming.

[0057] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stamping apparatus for producing cylinder parts, comprising a stamping frame (2), a lower punch (3), and an ejector ring (4), wherein the lower punch (3) is fixedly disposed within the stamping frame (2), and the ejector ring (4) is elastically disposed on the stamping frame (2), characterized in that, Also includes: The upper die mechanism (1) includes a lower pressing and stretching module (11) and a stamping module (12). The stamping module (12) is elastically connected to the stamping frame (2) above. The stamping module (12) is used to fix the thin plate piston (9) to the surface of the lower punch (3). The lower pressing and stretching module (11) can control the stamping module (12) to perform upward movement. The lower punch (3) is provided with a discharge hole 1 (31) and a discharge hole 2 (32) on its top and side walls, respectively. A sealing cavity (33) is provided inside the lower punch (3). The sealing cavity (33) is provided with an exhaust hole (34) that penetrates the lower punch (3). The downwardly inclined exhaust hole (34) is distributed below the discharge hole 2 (32). A push rod (41) is fixedly installed below the push ring (4). The push rod (41) passes through the sealing cavity (33). A piston ring (43) is slidably installed on the inner wall of the sealing cavity (33). The push rod (41) is fixedly connected to the piston ring (43). A push spring (42) is connected between the push ring (4) and the lower punch (3). The transmission mechanism (5) includes a cam (52), a turntable (54) and a transmission link (51). The transmission link (51) is hinged between the cam (52) and the lower pressing and stretching module (11). The turntable (54) is rotatably disposed on the surface of the lower punch (3). The cam (52) is connected to the turntable (54) in a transmission manner. The surface of the turntable (54) is provided with several sets of arc-shaped guide rails (55). The four sets of annular groove side push sliders (6) are slidably disposed in the arc-shaped guide rail (55); A side hole slider (7) is fixedly connected to one of the annular groove side push sliders (6); A side-concave slider (8) is slidably disposed within one of the sets of arc-shaped guide rails (55).

2. The stamping equipment for producing cylinder parts according to claim 1, characterized in that, The pressing and stretching module (11) includes a stamping cylinder (111) and an upper die (112). The fixed end of the stamping cylinder (111) is fixedly connected to the stamping frame (2), and the upper die (112) is fixedly connected to the movable end of the stamping cylinder (111). The transmission connecting rod (51) is hinged to one side of the upper die (112).

3. A stamping equipment for producing cylinder parts according to claim 2, characterized in that, The stamping module (12) includes an upper punch (121), a punching head (122), a balance bar (123), a top plate (124), and a pressure spring (125). The punching head (122) is fixedly disposed on the surface of the upper punch (121). The balance bar (123) is fixedly disposed between the top plate (124) and the upper punch (121). The pressure spring (125) is connected between the stamping frame (2) and the top plate (124). The balance bar (123) passes through the upper die (112).

4. A stamping equipment for producing cylinder parts according to claim 1, characterized in that, The stamping frame (2) is fixedly provided with a stamping table (21) and a limiting interlayer (22). The annular groove side push slider (6), the side hole slider (7) and the side concave slider (8) are all in sliding contact with the limiting interlayer (22). A return spring (62) is connected between the annular groove side push slider (6) and the limiting interlayer (22).

5. A stamping equipment for producing cylinder parts according to claim 1, characterized in that, The transmission mechanism (5) further includes a first transmission gear (53) and a second transmission gear (56). The cam (52) and the first transmission gear (53) are coaxially connected. The second transmission gear (56) is fixedly mounted on the surface of the turntable (54). The first transmission gear (53) and the second transmission gear (56) are connected in a transmission manner. The first transmission gear (53) is a sector gear.

6. A stamping equipment for producing cylinder parts according to claim 1, characterized in that, The annular groove side push slider (6) and the side concave slider (8) are respectively fixedly provided with movable pin one (61) and movable pin two (81). The movable pin one (61) and movable pin two (81) are slidably disposed in the arc-shaped guide rail (55). The side hole slider (7) is fixedly disposed on the surface of movable pin one (61).

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