Pin pressing machine for valve machining

Abstract

The invention is suitable for the related technical field of press-fitting machines, and provides a pin press-fitting machine for valve machining, which comprises a workbench, and a support frame and a lifting platform which are positioned on the workbench, and the workbench is also provided with a lifting module for driving the lifting platform to move; a control panel is further arranged on the workbench. The multi-station loading mechanism comprises a carrying disc and an intermittent driving module used for driving the carrying disc to intermittently rotate by a quarter circle, the carrying disc is rotationally installed on the supporting frame, a plurality of grooves used for containing valves are formed in the carrying disc, and a fixing module is arranged in each groove; and the press-fitting module comprises a press-fitting assembly and an auxiliary assembly used for carrying out pretreatment and cleaning treatment on the valve before machining and the valve after machining, and through cooperative arrangement of the multi-station loading mechanism and the press-fitting module, the machining quality of the valve can be improved.

Description

Technical Field

[0001] The invention relates to the technical field related to press-fitting machines, in particular to a pin-type press-fitting machine for valve processing. Background Art

[0002] A press machine is a device used to press-fit various parts and components, and is widely used in various fields of the manufacturing industry. Valve processing refers to the process of manufacturing raw materials or semi-finished products into valve products with specific functions through a series of mechanical and process flows. Press machines are usually used in the valve processing process.

[0003] Traditional pin installation mostly adopts manual operation, and the pin is installed into the workpiece hole by hammering. Although this method is simple, it is greatly affected by human factors, such as uneven force and inaccurate direction, which can easily cause deformation of the workpiece and affect the processing quality. Therefore, in view of the above situation, it is urgent to provide a pin press machine for valve processing to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a pin press for valve processing, aiming to solve the problems in the above-mentioned background technology.

[0005] The present invention is implemented as follows: a pin press for valve processing, comprising: A workbench and a support frame and a lifting platform located on the workbench, wherein the workbench is also provided with a lifting module for driving the lifting platform to move; wherein the workbench is also provided with a control panel; A multi-station loading mechanism, the multi-station loading mechanism comprises a carrier plate and an intermittent driving module for driving the carrier plate to intermittently rotate a quarter of a turn, the carrier plate is rotatably mounted on a support frame, a plurality of grooves for accommodating valves are provided on the carrier plate, and a fixing module is arranged in each groove; And a press-fitting module, which includes a press-fitting component and an auxiliary component for pre-processing and cleaning the valve before and after processing.

[0006] As a further solution of the present invention: the lifting module includes a lifting screw, and multiple groups of the lifting screws are rotatably installed on the workbench, and the ends of the multiple groups of lifting screws away from the workbench are rotatably connected to the same horizontal plate. The workbench is also provided with a motor a for driving the lifting screw to rotate, and the lifting platform is provided with an internal threaded hole threadedly connected to the lifting screw.

[0007] As a further solution of the present invention: the intermittent drive module includes: Rotating shafts b and c are rotatably mounted on a workbench, wherein a motor b is provided in the workbench for driving the rotating shaft b to rotate, and a driving gear and a driven gear meshing with each other are fixedly mounted on the rotating shaft b and the rotating shaft c, respectively; A rotating frame rotatably mounted on the rotating shaft b, the rotating frame being fixedly connected to the carrier, and the rotating frame being further provided with a driving groove and an arc groove, wherein four groups of the driving groove and the arc groove are evenly arranged on the rotating frame, and the driving groove and the arc groove are staggered in the circumferential direction of the rotating frame; And a driving handle fixedly mounted on the rotating shaft c, one end of the driving handle is rotatably mounted with a driving column for matching with the driving groove, and the other end of the driving handle is provided with an arc-shaped protrusion slidably matched with the arc-shaped groove.

[0008] As a further solution of the present invention: the pitch circle diameter of the driving gear is smaller than the pitch circle diameter of the driven gear.

[0009] As a further solution of the present invention: the fixing module comprises clamping plates, two groups of the clamping plates are symmetrically arranged in each group of grooves, and an electric telescopic rod b for driving the clamping plates to move is also arranged in the carrier plate.

[0010] As a further solution of the present invention: the press-fit assembly comprises: A control box is fixedly mounted on the lifting platform, the control box is also provided with a limit column, and a round hole for the limit column to pass through is opened on the lifting platform, the limit column has a through hole for accommodating a pin, and the limit column is provided with a discharge port for placing the pin; A linkage plate, wherein the linkage plate is slidably mounted in the control box, and an electric telescopic rod a for driving the linkage plate to move is also provided in the control box; A pressing rod used to push the pin in the limit column to insert into the valve, wherein the pressing rod is fixedly mounted on the linkage plate; And a blocking component is arranged in the limiting column.

[0011] As a further solution of the present invention: the blocking component includes: A compression box b is fixedly installed in the limiting column, a piston plate b is slidably installed in the compression box b, and a spring b is provided in the compression box b for pushing the piston plate b to move; A baffle plate used to block the pin in the limiting column, wherein the baffle plate is slidably installed in the limiting column and is fixedly connected to the piston plate b; A compression box a is fixedly installed in the control box, the compression box a is slidably installed in the piston plate a, and the compression box a is connected with the compression box b through a conduit; A push rod is fixedly mounted on the piston plate a, wherein one end of the push rod away from the piston plate a is slidably connected to the linkage plate, and a through hole is provided on the linkage plate for the push rod to pass through; And a spring a sleeved on the push rod, one end of the spring a is fixedly connected to the linkage plate, and the other end of the spring a is fixedly connected to the piston plate a.

[0012] As a further solution of the present invention: the auxiliary component comprises: A rotating tube, which is rotatably mounted on the lifting platform, and a coating tube is fixedly mounted on the bottom of the rotating tube; An oil storage tank fixedly mounted on the lifting platform, the oil storage tank is provided with a feed pipe and a discharge port for introducing lubricating oil into the rotating pipe, and the discharge port is rotatably connected to the rotating pipe; Rotate the rotating shaft a installed on the lifting platform, and a cleaning block is detachably installed at the bottom of the rotating shaft a; And a transmission component for driving the rotating tube and the rotating shaft a to rotate.

[0013] As a further solution of the present invention: the transmission assembly includes a linkage, a transmission shaft and a rotating sleeve, the rotating sleeve is rotatably installed on the lifting platform, the transmission shaft is rotatably installed on the workbench, the transmission shaft and the rotating sleeve are slidingly matched, and the rotating sleeve can rotate with the transmission shaft, the linkage is provided with three groups, and the three groups of linkage are respectively used for connecting between the rotating tube and the rotating shaft a, between the rotating tube and the rotating sleeve, and between the transmission shaft and the rotating shaft b; wherein the linkage adopts a combined structure of a pulley and a transmission belt.

[0014] Compared with the prior art, the present invention has the following beneficial effects: when the lifting platform is in a high position, the valve to be processed is placed in the groove of the carrier plate, and the valve can be fixed by using a fixing module so that the installation port of the pin faces the lifting platform, wherein the shape of the groove can be customized according to the shape of the valve, so that the position of the installation port remains fixed after each fixation, and the carrier plate rotates once after each valve is taken and placed, and the valve before and after processing can be pre-processed and cleaned by using an auxiliary component, and the pin can be installed in the valve by using a press-fitting component, which is convenient and fast, can work continuously, and can improve production efficiency and production quality; through the coordinated setting of the multi-station loading mechanism and the press-fitting module, the traditional manual operation of pin installation is avoided, and the pin is installed in the workpiece hole by hammering with a hand hammer. Although this method is simple, it is greatly affected by human factors, such as uneven force, inaccurate direction, etc., which can easily cause deformation of the workpiece and affect the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above.

[0017] Figure 3It is a schematic structural diagram of the press-fit assembly in the present invention.

[0018] Figure 4 for Figure 3 Schematic diagram of the main cross-sectional structure.

[0019] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 6 It is a schematic diagram of the structure of the carrier plate in the present invention.

[0021] Figure 7 for Figure 6 Schematic diagram of the structure viewed from above.

[0022] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0023] Fig. 9 It is a schematic structural diagram of the driving handle in the present invention.

[0024] In the attached figure: 1- workbench, 2- support frame, 3- carrier plate, 4- clamping plate, 5- lifting platform, 6- oil storage tank, 7- limit column, 8- control box, 9- lifting screw, 10- smear tube, 11- rotating tube, 12- cleaning block, 13- rotating shaft a, 14- linkage part, 15- transmission shaft, 16- discharge port, 17- electric telescopic rod a, 18- spring a, 19- push rod, 20- linkage plate, 21 -pressing rod, 22-compression box a, 23-piston plate a, 24-conduit, 25-baffle, 26-compression box b, 27-piston plate b, 28-spring b, 29-rotating frame, 30-rotating shaft b, 31-rotating shaft c, 32-driving gear, 33-driven gear, 34-driving handle, 35-driving column, 36-arc-shaped protrusion, 37-rotating sleeve, 38-arc-shaped groove, 39-driving groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The specific implementation of the present invention is described in detail below in combination with specific embodiments.

[0026] See also Figure 1-Figure 9 , an embodiment of the present invention provides a pin-type press-fitting machine for valve processing, the pin-type press-fitting machine for valve processing comprising: A workbench 1 and a support frame 2 and a lifting platform 5 located on the workbench 1, wherein the workbench 1 is also provided with a lifting module for driving the lifting platform 5 to move; wherein the workbench 1 is also provided with a control panel; A multi-station loading mechanism, the multi-station loading mechanism comprises a carrier plate 3 and an intermittent driving module for driving the carrier plate 3 to intermittently rotate a quarter of a turn, the carrier plate 3 is rotatably mounted on the support frame 2, a plurality of grooves for accommodating valves are provided on the carrier plate 3, and a fixing module is provided in each groove; And a press-fitting module, which includes a press-fitting component and an auxiliary component for pre-processing and cleaning the valve before and after processing.

[0027] In an embodiment of the present invention, when the lifting platform 5 is in a high position, the valve to be processed is placed in the groove of the carrier 3, and the valve can be fixed by using a fixing module so that the installation port of the pin faces the lifting platform 5, wherein the shape of the groove can be customized according to the shape of the valve, so that the position of the installation port remains fixed after each fixation, and the carrier 3 rotates once after each valve is taken and placed, and the valve before and after processing can be pre-treated and cleaned by using an auxiliary component, and the pin can be installed in the valve by using a press-fitting component, which is convenient and fast, can work continuously, and can improve production efficiency and production quality; compared with the prior art, the present invention avoids the traditional manual operation of pin installation by the coordinated setting of a multi-station loading mechanism and a press-fitting module, and the pin is installed in the workpiece hole by hammering. Although this method is simple, it is greatly affected by human factors, such as uneven force, inaccurate direction, etc., which can easily cause deformation of the workpiece and affect the processing quality.

[0028] In one embodiment of the present invention, see Figure 1-Figure 9 The lifting module includes a lifting screw 9, and multiple groups of the lifting screws 9 are rotatably installed on the workbench 1, and the ends of the multiple groups of lifting screws 9 away from the workbench 1 are rotatably connected to the same horizontal plate. A motor a (not shown in the figure) is also provided in the workbench 1 to drive the lifting screws 9 to rotate, and an internal threaded hole threadedly connected to the lifting screws 9 is opened on the lifting platform 5.

[0029] In this embodiment, the motor a can drive the lifting platform 5 to move in the length direction of the lifting screw 9 by driving the lifting screw 9 to rotate, thereby adjusting the working height of the lifting platform 5.

[0030] In one embodiment of the present invention, see Figure 1-Figure 9 , the intermittent drive module comprises: Rotating shafts b30 and c31 are rotatably mounted on the workbench 1. A motor b (not shown in the figure) is also provided in the workbench 1 for driving the rotating shaft b30 to rotate. A driving gear 32 and a driven gear 33 meshing with each other are fixedly mounted on the rotating shaft b30 and the rotating shaft c31, respectively. A rotating frame 29 rotatably mounted on the rotating shaft b30, the rotating frame 29 is fixedly connected to the carrier plate 3, and a driving groove 39 and an arc groove 38 are also provided on the rotating frame 29, and the driving groove 39 and the arc groove 38 are evenly arranged in four groups on the rotating frame 29, and the driving groove 39 and the arc groove 38 are staggered in the circumferential direction of the rotating frame 29; and a driving handle 34 fixedly mounted on the rotating shaft c31, wherein a driving column 35 for cooperating with the driving groove 39 is rotatably mounted on one end of the driving handle 34, and an arc-shaped protrusion 36 for slidingly cooperating with the arc-shaped groove 38 is disposed on the other end of the driving handle 34; The pitch circle diameter of the driving gear 32 is smaller than the pitch circle diameter of the driven gear 33; The fixing module comprises clamping plates 4 , and two groups of clamping plates 4 are symmetrically arranged in each group of grooves. An electric telescopic rod b for driving the clamping plates 4 to move is also arranged in the carrier plate 3 .

[0031] In this embodiment, the motor b can be used to drive the rotating shaft b30 to rotate, thereby driving the driving gear 32 to rotate. The driving gear 32 can make the rotating shaft c31 rotate by cooperating with the driven gear 33, thereby driving the driving handle 34 to rotate. During the rotation of the driving handle 34, the driving column 35 will be driven to move into one of the driving grooves 39. When the driving column 35 enters the driving groove 39, the driving column 35 will move from the end of the driving groove 39 close to the rotating shaft b30 to the end of the driving groove 39 away from the rotating shaft b30, and finally return to the driving groove 39 close to the rotating shaft b30. One end of the near rotating shaft b30 is separated from the driving groove 39, thereby pulling the rotating frame 29 to rotate 90° on the rotating shaft b30. After the driving column 35 is separated from the driving groove 39, the arc-shaped protrusion 36 will contact the arc-shaped groove 38 to realize the positioning function, preventing the rotating frame 29 from rotating with the rotating shaft b30. The rotating frame 29 can drive the carrier 3 to rotate intermittently, so that the multiple grooves on the carrier 3 can move in sequence, which is convenient for processing and taking and placing workpieces; the electric telescopic rod b can fix the valve to be processed in the groove by driving the clamping plate 4 to move.

[0032] In one embodiment of the present invention, see Figure 1-Figure 9 , the press-fit assembly comprises: A control box 8 is fixedly mounted on the lifting platform 5, and a limit column 7 is also arranged on the control box 8. A round hole for the limit column 7 to pass through is opened on the lifting platform 5, and a through hole for accommodating a pin is provided in the limit column 7, and a discharge port 16 for placing the pin is opened on the limit column 7; A linkage plate 20, wherein the linkage plate 20 is slidably mounted in the control box 8, and an electric telescopic rod a17 for driving the linkage plate 20 to move is also provided in the control box 8; Used to push the pin in the limit column 7 to insert into the pressing rod 21 in the valve, and the pressing rod 21 is fixedly installed on the linkage plate 20; and a blocking component disposed in the limiting column 7; The blocking assembly comprises: A compression box b26 fixedly mounted in the limiting column 7, wherein a piston plate b27 is slidably mounted in the compression box b26, and a spring b28 is provided in the compression box b26 for pushing the piston plate b27 to move; A baffle plate 25 for blocking the pin in the limiting column 7, wherein the baffle plate 25 is slidably installed in the limiting column 7, and the baffle plate 25 is fixedly connected to the piston plate b27; A compression box a22 fixedly mounted in the control box 8, wherein the compression box a22 is slidably mounted on the piston plate a23, and the compression box a22 is connected to the compression box b26 through a conduit 24; A push rod 19 is fixedly mounted on the piston plate a23, and one end of the push rod 19 away from the piston plate a23 is slidably connected to the linkage plate 20, and a through hole for the push rod 19 to pass through is opened on the linkage plate 20; and a spring a18 sleeved on the push rod 19, one end of the spring a18 being fixedly connected to the linkage plate 20, and the other end of the spring a18 being fixedly connected to the piston plate a23; The auxiliary components include: A rotating tube 11, wherein the rotating tube 11 is rotatably mounted on the lifting platform 5, and a coating tube 10 is fixedly mounted on the bottom of the rotating tube 11; An oil storage tank 6 is fixedly mounted on the lifting platform 5, wherein the oil storage tank 6 is provided with a feed pipe and a discharge port for introducing lubricating oil into the rotating tube 11, and the discharge port is rotatably connected to the rotating tube 11; The rotating shaft a13 mounted on the lifting platform 5 is rotated, and a cleaning block 12 is detachably mounted on the bottom of the rotating shaft a13; and a transmission assembly for driving the rotating tube 11 and the rotating shaft a13 to rotate; The transmission assembly includes a linkage 14, a transmission shaft 15 and a rotating sleeve 37. The rotating sleeve 37 is rotatably installed on the lifting platform 5, and the transmission shaft 15 is rotatably installed on the workbench 1. The transmission shaft 15 and the rotating sleeve 37 are slidably matched, and the rotating sleeve 37 can rotate with the transmission shaft 15. The linkage 14 is provided with three groups, and the three groups of linkages 14 are respectively used for connecting between the rotating tube 11 and the rotating shaft a13, between the rotating tube 11 and the rotating sleeve 37, and between the transmission shaft 15 and the rotating shaft b30; wherein the linkage 14 adopts a combined structure of a pulley and a transmission belt.

[0033] In this embodiment, since the pitch circle diameter of the driving gear 32 is smaller than the pitch circle diameter of the driven gear 33, the rotation speed of the rotating shaft b30 is much greater than the rotation speed of the rotating shaft c31, thereby being able to extend the intermittent time of the rotation of the carrier 3. Through the coordinated arrangement of the linkage 14, the transmission shaft 15 and the rotating sleeve 37, the rotating tube 11 and the rotating shaft a13 can be driven to rotate, so that the coating tube 10 and the cleaning block 12 can rotate. When the lifting platform 5 moves downward, the coating tube 10 can be inserted into the mounting port of the pin, and at the same time, the bottom of the cleaning block 12 and the limiting column 7 can contact the mounting port of the valve. The coating tube 10 is used to evenly apply the lubricating oil to the mounting port. The pin can be placed into the limiting column 7 through the discharge port 16 manually or by a mechanical arm, and the blocking effect of the baffle 25 can be used to avoid To prevent the pin from falling freely, when the limit column 7 contacts the installation port, the electric telescopic rod a17 will drive the linkage plate 20 to move downward, and the piston plate a23 can be pushed downward by the spring a18 (wherein the compression box a22 and the compression box b26 are pre-filled with gas), and the piston plate a23 can be used to press the gas into the compression box b26 through the conduit 24, thereby pushing the piston plate b27 and the baffle plate 25 to move into the compression box b26, so that the pin can fall into the installation port, and the linkage plate 20 continues to move downward, driving the pressing rod 21 to press the pin into the valve to complete the installation. After the installation is completed, the carrier plate 3 will rotate once, so that the installed valve moves to the bottom of the cleaning block 12, and the cleaning block 12 can be used to clean the spilled lubricating oil; wherein a solenoid valve can be provided at the connection between the oil storage tank 6 and the rotating tube 11.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "slide", "rotate", "fix", "have" and the like should be understood in a broad sense, for example, it can be a welding connection, a bolt connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pin press for valve processing, comprising a workbench, a support frame and a lifting platform located on the workbench, wherein the workbench is also provided with a lifting module for driving the lifting platform to move, characterized in that: Also includes: A multi-station loading mechanism, the multi-station loading mechanism comprises a carrier plate and an intermittent driving module for driving the carrier plate to intermittently rotate a quarter of a turn, the carrier plate is rotatably mounted on a support frame, a plurality of grooves for accommodating valves are provided on the carrier plate, and a fixing module is arranged in each groove; And a press-fitting module, which includes a press-fitting component and an auxiliary component for pre-processing and cleaning the valve before and after processing.

2. The pin press machine for valve processing according to claim 1, characterized in that: The lifting module includes a lifting screw, and multiple groups of the lifting screws are rotatably installed on the workbench, and the ends of the multiple lifting screws away from the workbench are rotatably connected to the same horizontal plate. A motor a for driving the lifting screws to rotate is also provided in the workbench, and an internal threaded hole threadedly connected to the lifting screw is opened on the lifting platform.

3. The pin press machine for valve processing according to claim 1, characterized in that: The intermittent drive module comprises: Rotating shafts b and c are rotatably mounted on a workbench, wherein a motor b is provided in the workbench for driving the rotating shaft b to rotate, and a driving gear and a driven gear meshing with each other are fixedly mounted on the rotating shaft b and the rotating shaft c, respectively; A rotating frame rotatably mounted on the rotating shaft b, the rotating frame being fixedly connected to the carrier, and the rotating frame being further provided with a driving groove and an arc groove, wherein four groups of the driving groove and the arc groove are evenly arranged on the rotating frame, and the driving groove and the arc groove are staggered in the circumferential direction of the rotating frame; And a driving handle fixedly mounted on the rotating shaft c, one end of the driving handle is rotatably mounted with a driving column for matching with the driving groove, and the other end of the driving handle is provided with an arc-shaped protrusion slidably matched with the arc-shaped groove.

4. The pin press machine for valve processing according to claim 3, characterized in that: The pitch circle diameter of the driving gear is smaller than the pitch circle diameter of the driven gear.

5. The pin press machine for valve processing according to claim 1, characterized in that: The fixing module comprises clamping plates, two groups of which are symmetrically arranged in each group of grooves, and an electric telescopic rod b for driving the clamping plates to move is also arranged in the carrier plate.

6. The pin press machine for valve processing according to claim 1, characterized in that: The press-fit assembly comprises: A control box is fixedly mounted on the lifting platform, the control box is also provided with a limit column, and a round hole for the limit column to pass through is opened on the lifting platform, the limit column has a through hole for accommodating a pin, and the limit column is provided with a discharge port for placing the pin; A linkage plate, wherein the linkage plate is slidably mounted in the control box, and an electric telescopic rod a for driving the linkage plate to move is also provided in the control box; A pressing rod used to push the pin in the limit column to insert into the valve, wherein the pressing rod is fixedly mounted on the linkage plate; And a blocking component is arranged in the limiting column.

7. The pin press machine for valve processing according to claim 6, characterized in that: The blocking assembly comprises: A compression box b is fixedly installed in the limiting column, a piston plate b is slidably installed in the compression box b, and a spring b is provided in the compression box b for pushing the piston plate b to move; A baffle plate used to block the pin in the limiting column, wherein the baffle plate is slidably installed in the limiting column and is fixedly connected to the piston plate b; A compression box a is fixedly installed in the control box, the compression box a is slidably installed in the piston plate a, and the compression box a is connected with the compression box b through a conduit; A push rod is fixedly mounted on the piston plate a, wherein one end of the push rod away from the piston plate a is slidably connected to the linkage plate, and a through hole is provided on the linkage plate for the push rod to pass through; And a spring a sleeved on the push rod, one end of the spring a is fixedly connected to the linkage plate, and the other end of the spring a is fixedly connected to the piston plate a.

8. The pin press machine for valve processing according to claim 3, characterized in that: The auxiliary components include: A rotating tube, which is rotatably mounted on the lifting platform, and a coating tube is fixedly mounted on the bottom of the rotating tube; An oil storage tank fixedly mounted on the lifting platform, the oil storage tank is provided with a feed pipe and a discharge port for introducing lubricating oil into the rotating pipe, and the discharge port is rotatably connected to the rotating pipe; Rotate the rotating shaft a installed on the lifting platform, and a cleaning block is detachably installed at the bottom of the rotating shaft a; And a transmission component for driving the rotating tube and the rotating shaft a to rotate.

9. The pin press machine for valve processing according to claim 8, characterized in that: The transmission assembly includes a linkage, a transmission shaft and a rotating sleeve. The rotating sleeve is rotatably installed on the lifting platform, and the transmission shaft is rotatably installed on the workbench. The transmission shaft and the rotating sleeve are slidably matched, and the rotating sleeve can rotate with the transmission shaft. The linkage is provided with three groups, and the three groups of linkages are respectively used for connecting between the rotating tube and the rotating shaft a, between the rotating tube and the rotating sleeve, and between the transmission shaft and the rotating shaft b; wherein the linkage adopts a combined structure of a pulley and a transmission belt.

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