Butterfly valve continuous assembly equipment with automatic feeding function

By combining a dual-slider synchronous linear module with multiple assembly mechanisms, the automated and efficient assembly of butterfly valves is achieved, solving the problem of low assembly efficiency in existing equipment and improving the assembly efficiency and precision of butterfly valves.

CN120791404APending Publication Date: 2025-10-17CHANGSHU KETAI ELECTRICAL & MECHANICAL CO LTD
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Patent Information

Application Number
CN202510962845.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-14
Publication Date
2025-10-17

AI Technical Summary

Technical Problem

The existing butterfly valve assembly equipment has low assembly efficiency and is difficult to meet the needs of batch and continuous assembly.

Method used

The double-slider synchronous linear module is used, combined with the valve seat installation mechanism, valve plate material removal mechanism, valve plate installation mechanism and valve stem installation mechanism to realize the automatic assembly of the butterfly valve. The valve seat is installed by deformation and the valve plate is installed in an upright posture, which reduces friction and improves assembly efficiency and precision.

Benefits of technology

It improves the assembly efficiency and precision of butterfly valves, reduces the friction between the valve plate and the valve seat, simplifies the assembly difficulty, and realizes automated and efficient assembly of butterfly valves.

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Abstract

The invention discloses butterfly valve continuous assembling equipment capable of achieving automatic feeding, belongs to the technical field of valve assembling, and achieves the double-station synchronous material taking and placing effect by arranging a double-sliding-block synchronous linear module. After a valve body is placed on the tool block, a valve seat is taken through the valve seat installation mechanism, the valve seat installation mechanism installs the valve seat into the valve body in a mode of enabling the valve seat to deform, then a valve plate is taken through the valve plate taking mechanism, and the valve plate is kept in a vertical posture and moved to the position above the valve body. The valve plate is mounted in the valve seat in a vertical posture through the valve plate mounting mechanism, so that the friction force between the valve plate and the valve seat is reduced, and the assembly difficulty of the valve plate is effectively reduced; after the valve plate mounting mechanism finishes mounting operation on the valve plate, the valve plate mounting mechanism keeps a limiting state on the valve plate, and then a valve rod is mounted in a valve body through the valve rod mounting mechanism, so that automatic assembly operation on the valve body, the valve seat, the valve plate and the valve rod of the butterfly valve is realized, and the assembly efficiency and the assembly precision are effectively improved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve assembly, in particular to a butterfly valve continuous assembly equipment with automatic feeding. BACKGROUND

[0002] The butterfly valve is a kind of industrial valve with relatively simple structure and wide application, mainly used for cutting off, connecting or adjusting the flow of fluid in the pipeline system, such as Figure 1 As shown in the figure, the butterfly valve is mainly composed of valve body, valve seat, valve plate and valve stem and other parts.

[0003] A butterfly valve assembly auxiliary device is disclosed in Chinese patent, which comprises a support frame and a hanging frame, one side of the support frame is fixedly connected with a connecting frame, and the inside of the connecting frame is fixedly connected with a hydraulic cylinder. The application is provided with a placing block, a limiting component and a stabilizing component. According to the gravity influence of the butterfly valve body, the placing block will be lowered in the support frame, thus the pressure sensor will be extruded. At this time, after the pressure sensor is extruded, the stabilizing component will be automatically started to clamp and stabilize the outer wall of the butterfly valve body, so as to improve the stability of the butterfly valve body on the top of the placing block and reduce the position deviation of the butterfly valve body. In addition, while the placing block is lowered, the limiting component will be extruded and gradually lifted from the inside of the support frame to limit and block the tail of the butterfly valve body. However, the efficiency of assembling the butterfly valve by using the device is low, which is difficult to meet the continuous assembly demand of batch butterfly valves.

[0004] Therefore, the present application designs a butterfly valve continuous assembly equipment with automatic feeding to solve the above problems. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the present application provides a butterfly valve continuous assembly equipment with automatic feeding.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: A butterfly valve continuous assembly equipment with automatic feeding comprises a base, a support, a double-sliding-block synchronous linear module and a tool block fixedly installed on the base, and a profiling groove matched with the valve body is formed on the tool block; The double-sliding-block synchronous linear module is located at the rear side of the tool block, and a first linear sliding table and a second linear sliding table are fixedly installed at the moving ends of the left and right sides of the double-sliding-block synchronous linear module, respectively. A valve seat installation mechanism for installing the valve seat into the valve body is installed at the moving end of the first linear sliding table, and a valve plate taking mechanism for taking the valve plate in an upright posture is installed at the moving end of the second linear sliding table. The support is erected on the upper side of the tool block, and a valve plate installation mechanism for installing the valve plate in an upright posture into the valve seat is installed between the base and the support. A valve stem installation mechanism is also installed on the base, and the valve stem installation mechanism is located at the front side of the tool block.

[0007] Further, the valve seat mounting mechanism comprises a support assembly and a deformation built-in assembly, the support assembly is mounted on the upper end of the base and located at the left side of the tooling block, and the deformation built-in assembly is mounted on the moving end of the first linear slide.

[0008] Further, the deformation built-in assembly comprises a mounting frame, an inner supporting assembly and an outer pressing assembly, the mounting frame is fixedly connected with the moving end of the first linear slide, the inner supporting assembly and the outer pressing assembly are mounted on the mounting frame, the inner supporting assembly is used for supporting the valve seat from the inner side of the valve seat, and the outer pressing assembly is used for deforming the valve seat inward from the outer side of the valve seat.

[0009] Further, the inner supporting assembly comprises a first synchronous double-head air cylinder, an inner supporting arc-shaped plate and a positioning block, the first synchronous double-head air cylinder is fixedly connected with the mounting frame, the two moving ends of the first synchronous double-head air cylinder are both fixedly installed with the inner supporting arc-shaped plate, and the outer edges of the inner supporting arc-shaped plate are on the same circumference; the positioning block for positioning the hole of the valve seat for penetrating the valve rod is fixedly installed on the inner supporting arc-shaped plate.

[0010] Further, the outer pressing assembly comprises a second synchronous double-head air cylinder, an outer pressing cylinder and a material placing table, the second synchronous double-head air cylinder is fixedly connected with the mounting frame, the two moving ends of the second synchronous double-head air cylinder are both fixedly connected with the outer pressing cylinder through the mounting frame; the inner supporting arc-shaped plate and the outer pressing cylinder are arranged at intervals.

[0011] Further, the valve plate material taking mechanism comprises a material taking frame and a ball head clamping block, the material taking frame is fixedly connected with the moving end of the second linear slide, the material taking frame is matched in size with the valve plate, and the front and rear ends of the inner side of the material taking frame are both fixedly installed with the ball head clamping block for clamping the hole of the valve plate for penetrating the valve rod.

[0012] Further, the valve plate mounting mechanism comprises a pressing assembly and a jacking assembly, the pressing assembly and the jacking assembly are respectively mounted on the base and the support, and are respectively located at the upper and lower sides of the tooling block.

[0013] Further, the valve rod mounting mechanism comprises a pressing assembly, a jacking cylinder and an auxiliary positioning assembly mounted on the base, the pressing assembly and the jacking cylinder are respectively located at the front and rear sides of the tooling block, and the jacking cylinder is fixedly connected with the base; the auxiliary positioning assembly is located between the tooling block and the pressing assembly.

[0014] Compared with the prior art, the beneficial effects of the present application are that the two moving ends of the double-sliding-block synchronous linear module move synchronously in the horizontal direction, when any one of the valve seat mounting mechanism or the valve plate material taking mechanism is taking material, the other is discharging material, the double-station synchronous material taking and discharging effect is realized, and the assembly efficiency of the butterfly valve is effectively improved. When the valve body is placed on the fixture block, the valve seat is taken out through the valve seat installation mechanism, the valve seat installation mechanism installs the valve seat into the valve body by deforming the valve seat, then the valve plate is taken out through the valve plate taking mechanism, the valve plate is moved to above the valve body in an upright posture, then the valve plate is installed into the valve seat in the upright posture through the valve plate installation mechanism, the force applying action on the valve plate is facilitated, the contact area between the valve plate and the valve seat is reduced, the friction between the valve plate and the valve seat is reduced, and the assembly difficulty of the valve plate is effectively reduced; after the valve plate installation mechanism completes the installation work on the valve plate, the valve plate installation mechanism keeps the limiting state of the valve plate, and then the valve rod is installed into the valve body through the valve rod installation mechanism, so that the automatic assembly work of the valve body, the valve seat, the valve plate and the valve rod of the butterfly valve is realized, and the assembly efficiency and the assembly precision are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 It is a structural schematic view of a butterfly valve; Figure 2 It is a perspective view of an automatic feeding butterfly valve continuous assembly equipment of the present application Figure 1 ; Figure 3 It is a front view of an automatic feeding butterfly valve continuous assembly equipment of the present application; Figure 4 It is a right view of an automatic feeding butterfly valve continuous assembly equipment of the present application; Figure 5 It is a perspective view of an automatic feeding butterfly valve continuous assembly equipment of the present application Figure 2 ; Figure 6 It is a perspective view of a valve seat installation mechanism of the present application; Figure 7 It is a perspective view of an automatic feeding butterfly valve continuous assembly equipment of the present application Figure 3 .

[0017] The numbers in the figures respectively represent: 10, base; 11, support; 12, double slider synchronous linear module; 13, first linear slide; 14, second linear slide; 2, valve seat installation mechanism; 21, mounting frame; 22, first synchronous double head cylinder; 23, inner support arc plate; 24, positioning block; 25, second synchronous double head cylinder; 26, outer pressure cylinder; 27, material placing table; 28, positioning plate; 29, U-shaped material placing groove; 210, movable groove; 3, valve plate material taking mechanism; 31, material taking frame; 32, ball head clamping block; 4, valve plate installation mechanism; 41, pressing cylinder; 42, pressing slide rod; 43, pressing block; 44, jacking cylinder; 45, jacking slide rod; 46, jacking block; 5, valve rod installation mechanism; 51, pressing and installing cylinder; 52, pressing and installing block; 53, linear guide rail; 54, positioning groove; 55, supporting cylinder; 56, supporting block; 57, top cylinder; 6, tool block. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0019] In the following description, "left", "right", "front", "back", "up", and "down" are oriented in the perspective of the front view.

[0020] Embodiment one: In some embodiments, referring to FIG. 1 of the accompanying drawings, an automatic feeding butterfly valve continuous assembly device includes a base, a support, a double slider synchronous linear module, and a tool block fixedly installed on the base, and a profiling groove matched with a valve body is formed on the tool block; The double slider synchronous linear module is located at the back side of the tool block, and a first linear slide and a second linear slide are fixedly installed at the moving ends of the left and right sides of the double slider synchronous linear module, and the first linear slide and the second linear slide are both pneumatic linear slides; the moving end of the first linear slide is installed with a valve seat installation mechanism for installing the valve seat into the valve body, and the moving end of the second linear slide is installed with a valve plate material taking mechanism for taking the valve plate in an upright posture; the support is erected at the upper side of the tool block, and the valve plate installation mechanism for installing the valve plate in an upright posture into the valve seat is installed between the base and the support; the valve rod installation mechanism is also installed on the base and located at the front side of the tool block.

[0021] In the present application, the two moving ends of the double-sliding-block synchronous linear module move synchronously in the horizontal direction, when either of the valve seat installation mechanism or the valve plate material taking mechanism is performing material taking operation, the other is performing material placing operation, realizing the double-station synchronous material taking and placing effect, so as to effectively improve the assembly efficiency of the butterfly valve. When the valve body is placed on the tooling block, the valve seat is taken by the valve seat installation mechanism, the valve seat installation mechanism deforms the valve seat to install the valve seat into the valve body, then the valve plate is taken by the valve plate material taking mechanism, the valve plate is moved to above the valve body in an upright posture, then the valve plate is installed into the valve seat in an upright posture by the valve plate installation mechanism, facilitating the force applying action on the valve plate, reducing the contact area between the valve plate and the valve seat, and further reducing the friction therebetween, effectively reducing the assembly difficulty of the valve plate; after the valve plate installation mechanism completes the installation operation of the valve plate, the valve plate installation mechanism keeps the limiting state of the valve plate, then the valve stem is installed into the valve body by the valve stem installation mechanism, so as to realize the automatic assembly operation of the valve body, the valve seat, the valve plate and the valve stem of the butterfly valve, and the assembly efficiency and the assembly precision are effectively improved.

[0022] Please refer to the drawings, the valve seat installation mechanism comprises a supporting assembly and a deformation internal installation assembly, the supporting assembly is installed on the upper end of the base and located at the left side of the tooling block, and the deformation internal installation assembly is installed on the moving end of the first linear sliding table; The deformation internal installation assembly comprises a mounting frame, an internal supporting assembly and an external pressing assembly, the mounting frame is fixedly connected with the moving end of the first linear sliding table, the internal supporting assembly and the external pressing assembly are installed on the mounting frame, the internal supporting assembly is used for supporting the valve seat from the inside of the valve seat, and the external pressing assembly is used for deforming the valve seat inwardly from the outside of the valve seat.

[0023] The internal supporting assembly comprises a first synchronous double-head air cylinder, an internal supporting arc-shaped plate and a positioning block, the first synchronous double-head air cylinder is fixedly connected with the mounting frame, the two moving ends of the first synchronous double-head air cylinder are fixedly installed with the internal supporting arc-shaped plates, and the outer edges of the internal supporting arc-shaped plates are on the same circumference; the positioning block for positioning the hole of the valve seat for penetrating the valve stem is fixedly installed on the internal supporting arc-shaped plate. The external pressing assembly comprises a second synchronous double-head air cylinder, an external pressing air cylinder and a material placing table, the second synchronous double-head air cylinder is fixedly connected with the mounting frame, and the two moving ends of the second synchronous double-head air cylinder are fixedly connected with the external pressing air cylinder through the mounting frame; The internal supporting arc-shaped plate and the external pressing air cylinder are arranged at intervals.

[0024] The supporting assembly comprises a material placing table and a positioning plate, the material placing table is fixedly installed on the base, the positioning plate is fixedly installed on the upper end of the material placing table, the U-shaped material placing groove for positioning the valve seat is formed in the positioning plate, and the movable grooves for avoiding the output ends of the external pressing air cylinders are symmetrically formed in the left and right ends of the positioning plate.

[0025] In the present application, when the valve seat is placed on the material placing table and positioned in the U-shaped material placing groove of the positioning plate, the output end of the second synchronous double-head cylinder is extended, the piston rod of the outer pressing cylinder is located outside the valve seat, the output end of the first synchronous double-head cylinder is retracted, the outer diameter of the inner supporting arc plate is smaller than the inner diameter of the valve seat; the first linear sliding table drives the mounting frame to move downward, the piston rod of the outer pressing cylinder extends into the movable groove, the output end of the second synchronous double-head cylinder is retracted, the piston rod of the outer pressing cylinder presses the valve seat between the inner supporting arc plates, and then the inner wall of the valve seat is deformed by tightly abutting the outer wall of the inner supporting arc plate, and the positioning block is inserted into the hole position of the valve seat to position the valve seat. The double-slider synchronous linear module drives the valve seat to move to the upper side of the valve body, the first linear sliding table can smoothly extend the deformed valve seat into the valve body, then the second synchronous double-head cylinder drives the outer pressing cylinder to reset, so that the piston rod of the outer pressing cylinder is opened to release the valve seat, and the first synchronous double-head cylinder also drives the inner supporting arc plate to reset and open, so that the inner supporting arc plate abuts the valve seat on the inner wall of the valve body, and then the piston rod of the outer pressing cylinder is retracted upward to leave the valve body, and finally the first synchronous double-head cylinder controls the inner supporting arc plate to retract and separate from the valve body, thereby realizing automatic and high-precision assembly of the valve seat.

[0026] Please refer to the drawings and the drawings, the valve plate taking mechanism includes a taking frame and a ball head clamping block, the taking frame is fixedly connected with the second linear sliding table moving end, the size of the taking frame is matched with the valve plate, and the front and rear ends of the inner side of the taking frame are both fixedly installed with the ball head clamping block for clamping the hole of the valve rod.

[0027] The valve plate mounting mechanism includes a pressing assembly and a lifting assembly, and the pressing assembly and the lifting assembly are respectively installed on the base and the support and are located on the upper and lower sides of the tool block.

[0028] The pressing assembly includes a pressing cylinder, a pressing slide rod and a pressing block, the pressing cylinder is fixedly installed on the upper end of the support, and the output end of the pressing cylinder is fixedly installed with the pressing block; the lower end of the pressing slide rod is fixedly connected with the pressing block, and the upper end of the pressing slide rod is limitingly and slidably connected with the support; The lifting assembly includes a lifting cylinder, a lifting slide rod and a lifting block, the lifting cylinder is fixedly installed on the lower end of the base, and the output end of the lifting cylinder is fixedly installed with the lifting block; the upper end of the lifting slide rod is fixedly connected with the lifting block, and the lower end of the lifting slide rod is limitingly and slidably connected with the base; The pressing block and the lifting block are both provided with a profiling groove matched with the valve plate in an upright posture.

[0029] In the present application, the valve plate is inserted into the material taking frame in an upright posture, and the holes on both sides of the valve plate are clamped and fixed with the ball head clamping block, the double slide blocks drive the valve plate to move to the upper side of the valve body, the jacking cylinder controls the jacking block to move up, the second linear slide table controls the material taking frame to move down, so that the valve plate is supported by the jacking block, then the pressing cylinder drives the pressing block to move down and pass through the material taking frame, and the valve plate is pressed into the valve seat, at the same time, the jacking cylinder drives the jacking block to move down synchronously, so that the valve plate is assembled into the valve seat through the cooperation of the pressing block and the jacking block, and the two limit the valve plate from the upper and lower sides, thereby effectively ensuring the assembly precision of the valve plate.

[0030] Please refer to the drawings, the valve rod mounting mechanism comprises a pressing assembly, a jacking cylinder and an auxiliary positioning assembly mounted on the base, the pressing assembly and the jacking cylinder are located on the front and rear sides of the tool block respectively, and the jacking cylinder is fixedly connected with the base; the auxiliary positioning assembly is located between the tool block and the pressing assembly.

[0031] The pressing assembly comprises a pressing cylinder, a pressing block and linear guides, the pressing cylinder is fixedly connected with the base, the output end of the pressing cylinder is fixedly installed with the pressing block, and the pressing block is provided with a positioning groove for loading the valve rod; the two linear guides are fixedly installed on the base and symmetrically distributed on the left and right sides of the pressing block, and the pressing block is limitingly and slidingly connected with the linear guides through the sliding blocks; The auxiliary positioning assembly comprises a supporting cylinder and a supporting block, the supporting cylinder is fixedly connected with the base, the output end of the supporting cylinder is fixedly connected with the supporting block, and the supporting block is used for supporting the valve rod.

[0032] In the present application, after the valve plate is assembled, the pressing block and the jacking block keep the limiting effect on the valve plate, then the valve rod is placed in the positioning groove of the pressing block and on the supporting block, the pressing cylinder drives the pressing block to advance to the direction of the valve body under the limiting action of the linear guides, at the same time, the piston rod of the jacking cylinder extends to abut against the valve body, so that the valve rod is accurately and stably assembled into the valve body, and in the assembly process, the supporting cylinder drives the supporting block to move down to avoid the pressing block.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic loading butterfly valve continuous assembly device, comprising a base (10), a bracket (11) fixedly mounted on the base (10), a double-slider synchronous linear module (12) and a tooling block (6), wherein the tooling block (6) is provided with a contoured groove that matches the valve body, and is characterized in that: The dual-slider synchronous linear module (12) is located at the rear side of the tooling block (6), and the left and right movable ends of the dual-slider synchronous linear module (12) are respectively fixedly installed with a first linear slide (13) and a second linear slide (14), the movable end of the first linear slide (13) is installed with a valve seat mounting mechanism (2) for mounting the valve seat into the valve body, and the movable end of the second linear slide (14) is installed with a valve plate material taking mechanism (3) for taking the valve plate in an upright posture; the bracket (11) is mounted on the upper side of the tooling block (6), and a valve plate mounting mechanism (4) for mounting the valve plate in an upright posture into the valve seat is installed between the base (10) and the bracket (11); a valve stem mounting mechanism (5) is also installed on the base (10), and the valve stem mounting mechanism (5) is located on the front side of the tooling block (6).

2. The automatic loading butterfly valve continuous assembly equipment according to claim 1 is characterized in that: The valve seat mounting mechanism (2) comprises a support component and a deformable internal component, wherein the support component is mounted on the upper end of the base (10) and located on the left side of the tooling block (6), and the deformable internal component is mounted on the movable end of the first linear slide (13).

3. The automatic loading butterfly valve continuous assembly equipment according to claim 2 is characterized in that: The deformable internal component includes a mounting frame (21), an internal support component and an external pressure component. The mounting frame (21) is fixedly connected to the movable end of the first linear slide (13). The internal support component and the external pressure component are installed on the mounting frame (21). The internal support component is used to support the valve seat from the inside of the valve seat, and the external pressure component is used to press the valve seat inward from the outside of the valve seat to deform it.

4. The automatic loading butterfly valve continuous assembly equipment according to claim 3 is characterized in that: The inner support assembly includes a first synchronous double-headed cylinder (22), an inner support arc plate (23) and a positioning block (24). The first synchronous double-headed cylinder (22) is fixedly connected to the mounting frame (21). The two movable ends of the first synchronous double-headed cylinder (22) are fixedly mounted with the inner support arc plate (23), and the outer edges of the inner support arc plate (23) are on the same circumference; the inner support arc plate (23) is fixedly mounted with a positioning block (24) for positioning the hole on the valve seat for penetrating the valve stem.

5. The automatic loading butterfly valve continuous assembly equipment according to claim 4 is characterized in that: The external pressure assembly includes a second synchronous double-headed cylinder (25), an external pressure cylinder (26) and a material placement table (27). The second synchronous double-headed cylinder (25) is fixedly connected to the mounting frame (21). Both movable ends of the second synchronous double-headed cylinder (25) pass through the mounting frame (21) and are fixedly connected to the external pressure cylinder (26). The inner support arc plate (23) and the external pressure cylinder (26) are spaced apart.

6. The automatic loading butterfly valve continuous assembly equipment according to claim 1 is characterized in that: The valve plate picking mechanism (3) comprises a picking frame (31) and a ball head clamp (32). The picking frame (31) is fixedly connected to the movable end of the second linear slide (14). The picking frame (31) is adapted to the size of the valve plate. The front and rear ends of the inner side of the picking frame (31) are fixedly mounted with ball head clamps (32) for clamping with holes on the valve plate through which the valve stem is passed.

7. The automatic loading butterfly valve continuous assembly equipment according to claim 1 is characterized in that: The valve plate mounting mechanism (4) comprises a pressing assembly and a lifting assembly, wherein the pressing assembly and the lifting assembly are respectively mounted on the base (10) and the bracket (11), and are respectively located on the upper and lower sides of the tooling block (6).

8. The automatic loading butterfly valve continuous assembly equipment according to claim 1 is characterized in that: The valve stem mounting mechanism (5) comprises a press-fitting assembly, a top cylinder (57), and an auxiliary positioning assembly mounted on a base (10); the press-fitting assembly and the top cylinder (57) are respectively located on the front and rear sides of the tooling block (6), and the top cylinder (57) is fixedly connected to the base (10); and the auxiliary positioning assembly is located between the tooling block (6) and the press-fitting assembly.