A finishing device for a liquid filling valve assembly

Abstract

The present invention relates to the technical field of the processing of liquid filling valves, and particularly relates to a fine processing device for a liquid filling valve assembly, including a machine frame and a receiving box installed at the front end thereof, as well as a fixing mechanism, a guiding groove, a locking mechanism and a honing mechanism. The locking mechanism is arranged on a substrate and is used for locking the substrate after the valve sleeve is limited and fixed and for interlocking the substrate and a positioning block bidirectionally. The present invention adopts an integrated linkage clamping mechanism. Through the cooperative action of a pushing plate, a substrate, a gear set and a guiding groove, the radial and axial pressing and circumferential limiting of the valve sleeve can be realized by using a single pushing operation, while simplifying the fixing steps of the valve sleeve and improving the fixing efficiency and stability of the valve sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of filling valve processing, and particularly relates to a fine processing device for a filling valve assembly. Background Art

[0002] A filling valve is a hydraulic check valve, which mainly consists of a valve sleeve (as Figure 9 shown), a valve core, a valve seat, a valve body, etc. The processing of the valve sleeve involves an inner hole grinding process. By grinding and finishing the inner ring wall of the valve sleeve, the surface roughness is reduced, and the sealing performance after the assembly of the valve core and the valve sleeve is improved. Usually, a honing machine is used for inner hole grinding, and a floating fixture is used to fix the workpiece. On the premise of ensuring the processing stability, the floating fixture allows the workpiece to make a small self-adjustment in a specific direction to compensate for the initial installation error of the workpiece, slight deformation, or dimensional changes caused by thermal expansion during the processing; the floating fixture is mainly used for fixing thin-walled parts.

[0003] The existing fixing method of the honing machine and the floating fixture for the valve sleeve is as follows: First, the ring grip fixture is fixed to the valve sleeve, then the valve sleeve is sleeved on the honing head, and the ring grip fixture abuts against the upper end of the stop rod on the honing machine, so as to prevent the valve sleeve from rotating with the honing head during the grinding process. Then, the gantry is rotated downward so that the gantry is located directly in front of the valve sleeve, and the valve sleeve is limited front and back by the baffle on the gantry and the base plate. Then, the inner ring wall of the valve sleeve is ground and finished.

[0004] However, the existing fixing method has the following problems: 1. Only the rotation of the valve sleeve is restricted by the ring grip fixture, and the limiting effect is not good. The valve sleeve is prone to jitter, which affects the grinding quality. 2. To ensure the smooth downward rotation of the gantry, there is actually a gap between the gantry and the valve sleeve, and the valve sleeve is not completely rigidly fixed. During the movement and grinding process of the honing head, the valve sleeve is prone to move forward and backward, resulting in uneven contact pressure between the honing head and the inner wall, local over-grinding or under-grinding, and inconsistent hole diameter sizes. 3. It is necessary to complete multiple independent operations such as installing the ring grip fixture, sleeving the valve sleeve on the honing head, adjusting the ring grip fixture to abut against the stop rod, and rotating the gantry for limiting to finally fix the valve sleeve. Each step lacks linkage and interaction, and the operation process is cumbersome, and the disassembly and installation efficiency is low.

[0005] Therefore, the problems of cumbersome valve sleeve fixing and poor fixing stability affecting the fine processing quality are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0006] In view of the above problems, an embodiment of the present invention provides a fine processing device for a filling valve assembly to solve the above-mentioned technical problems.

[0007] To achieve the above object, the embodiments of the present invention provide the following technical solutions: A fine machining device for a liquid filling valve assembly, comprising a frame and a receiving box installed at the front end thereof, as well as a fixing mechanism, a guiding groove, a locking mechanism, and a honing mechanism.

[0008] The fixing mechanism is arranged at the front end of the frame and inside the receiving box. The fixing mechanism includes two reciprocating shafts slidably installed back and forth at the front end of the frame. A substrate with a U-shaped groove is fixedly installed on the two reciprocating shafts. A U-shaped clamping plate coaxial with the U-shaped groove and clamped with the valve sleeve is fixedly installed at the front end of the substrate. Two positioning blocks symmetric about the U-shaped groove are arranged at the front end of the substrate. Limiting columns are arranged on the positioning blocks. A pushing plate is slidably installed on the two reciprocating shafts. A gear set is jointly arranged between the pushing plate and the two positioning blocks.

[0009] The guiding groove is opened at the position of the substrate corresponding to the positioning blocks. When the pushing plate moves backward to push the valve sleeve so that the valve sleeve is closely attached to and limited by the substrate, the two positioning blocks are driven to move through the gear set. Under the guidance of the guiding groove, the two positioning blocks first move horizontally and synchronously towards each other to squeeze and fix the valve sleeve, and then rotate synchronously in the opposite direction to drive the corresponding limiting columns to abut against the inner top wall of the side hole of the valve sleeve to limit the rotation of the valve sleeve.

[0010] The locking mechanism is arranged on the substrate and is used to lock the substrate and interlock the substrate and the positioning blocks bidirectionally after the valve sleeve is limited and fixed. The honing mechanism is arranged on the frame and is used to polish the inner wall of the valve sleeve.

[0011] As a preferred solution, two symmetrically arranged and concave-shaped moving seats are slidably installed left and right at the front end of the substrate. Waist-shaped grooves are opened in the two vertical sections of the moving seat. A positioning block is arranged between the two vertical sections of the moving seat. Roller shafts penetrating the corresponding waist-shaped grooves are fixedly installed at both the front and rear ends of the positioning block.

[0012] As a preferred solution, the rear end of the rear roller shaft penetrates the corresponding waist-shaped groove and extends rearward and is fixedly installed with a connecting block. Two guide posts symmetric about the corresponding roller shaft are fixedly installed at the rear end of the connecting block. Guide grooves corresponding to the guide posts one by one are opened on the substrate. The guide groove consists of a horizontal section and an arc section communicated with one end of the horizontal section close to the U-shaped groove, and the end of the arc section is higher than the horizontal section. The arc section is concentric with the U-shaped groove, and the guide posts slidably penetrate the corresponding guide grooves.

[0013] As a preferred solution, the locking mechanism includes locking columns. T-shaped locking columns are arranged at positions corresponding to the reciprocating shafts on the pushing plate. A compression spring sleeved outside the vertical section of the locking column is connected between the horizontal section of the locking column and the substrate. Locking holes cooperating with the locking columns are opened on the reciprocating shafts. The vertical section of the locking column slidably penetrates the substrate into the corresponding locking holes. A limiting member is arranged between the locking column and the moving seat.

[0014] As a preferred solution, the gear set includes a support seat, a support seat is fixedly installed at the front end of the base plate and located between the two movable seats, the support seat is a concave structure, a spur gear is rotatably installed between the two horizontal longitudinal sections of the support seat through an axle column, and the front and rear sides of the spur gear are meshed with racks slidably installed on the support seat, the two racks are respectively fixedly connected to the corresponding movable seats, and a driving member for driving the axle column to rotate is provided on the base plate.

[0015] As a preferred embodiment, the limiting member includes a connecting plate, the upper ends of the two locking columns are fixedly mounted with the connecting plate, the lower ends of the connecting plate and the positions of the moving seats are fixedly mounted with insertion rods, and the lower ends of the insertion rods are inserted into the vertical sections of the corresponding moving seats.

[0016] As a preferred solution, the driving member includes rack 2, and the right side of the spur gear is meshed with rack 2 located above rack 1. Rack 2 is slidably installed on the support seat, rack 2 is meshed with the spur gear, and the front end of rack 2 is fixedly connected to the front end of the pushing plate through a fixed plate.

[0017] As a preferred solution, a positioning column corresponding to the moving seat is fixedly installed at the front end of the frame, the front end of the positioning column slides through the base plate, and the moving seat is penetrated by a positioning hole corresponding to the positioning column.

[0018] As a preferred solution, the end surface of the positioning block close to the axis of the U-shaped groove is an arc-shaped surface, and a plurality of pressure rollers are rollingly mounted on the arc-shaped end surface of the positioning block along its circumference.

[0019] As a preferred solution, the inner wall of the U-shaped clamping plate is provided with a limiting convex edge along its inner contour that cooperates with the annular groove of the valve sleeve.

[0020] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. The present invention adopts an integrated linkage clamping mechanism, which can realize radial and axial compression and circumferential limitation of the valve sleeve through the coordinated action of the pushing plate, the base plate, the gear set and the guide groove by a single pushing operation, thereby simplifying the valve sleeve fixing steps and improving the efficiency and stability of the valve sleeve fixing.

[0021] 2. When the pushing plate in the present invention moves close to the valve sleeve, it drives the positioning block to move through the gear set. The positioning block first moves horizontally under the guidance of the guide groove to squeeze and limit the outer wall of the valve sleeve. As the positioning block continues to move, the guide groove guides the two positioning blocks to rotate synchronously in opposite directions. The positioning block contacts the inner top wall of the side hole of the valve sleeve through the limiting column to limit the rotation of the positioning block. At this time, the pushing plate pushes the valve sleeve and the base plate to be tightly limited, thereby ensuring the stability of the valve sleeve. At the same time, it is also convenient for disassembly and assembly of the valve sleeve, thereby improving the efficiency of valve sleeve processing.

[0022] III. After the pushing plate in the present invention moves to fix the valve sleeve, the locking post is inserted into the locking hole to limit the movement of the pushing plate. At the same time, the inserting rod is inserted into the moving seat, so that the pushing plate and the moving seat form a two-way interlocking structure, avoiding the influence of the vibration generated during grinding on the stability of the valve sleeve. And during the grinding process, the positioning post is inserted into the positioning hole to further limit the movement of the moving seat, thereby ensuring the stability of the valve sleeve during processing and improving the processing accuracy of the valve sleeve.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0025] Figure 1 Schematic diagram of the three-dimensional structure of the present invention after fixing the valve sleeve.

[0026] Figure 2 For Figure 1 Schematic diagram of the structure in the top view.

[0027] Figure 3 Schematic diagram of the movement change of the positioning block in the present invention during the process of fixing the valve sleeve by the fixing mechanism.

[0028] Figure 4 Schematic diagram of the position change of the limiting post in the present invention during the process of the positioning block rotating from the horizontal state to the inclined state.

[0029] Figure 5 Schematic diagram of the structure of the guide post and the guiding groove in the present invention.

[0030] Figure 6 Schematic diagram of the structure of the locking mechanism in the present invention.

[0031] Figure 7 For Figure 6 Enlarged view of the structure at A in

[0032] Figure 8 Schematic diagram of the structure of the gear set in the present invention.

[0033] Figure 9 Schematic diagram of the three-dimensional structure of the valve sleeve.

[0034] Reference numerals: 10, frame; 11, accommodation box; 12, honing mechanism; 13, positioning post; 14, positioning hole; 120, main shaft; 121, honing head; 2, fixing mechanism; 20, reciprocating shaft; 21, substrate; 22, U-shaped clamping plate; 23, positioning block; 230, pressing roller; 231, guiding groove; 232, moving seat; 233, roller shaft; 234, connecting block; 235, guide post; 24, limiting post; 25, pushing plate; 3, locking mechanism; 30, locking post; 300, ball; 31, compression spring; 32, limiting member; 320, connecting plate; 321, inserting rod; 40, support seat; 41, spur gear; 42, first rack; 43, driving member; 430, second rack; 431, fixing plate. Detailed implementation manners

[0035] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0036] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 shown, a fine machining device for a liquid filling valve assembly includes a frame 10, an accommodation box 11 installed at the front end of the frame 10, and a fixing mechanism 2 disposed at the front end of the frame 10 and located inside the accommodation box 11. The fixing mechanism 2 includes two reciprocating shafts 20 slidably installed back and forth at the front end of the frame 10. A substrate 21 with a U-shaped groove is fixedly installed on the two reciprocating shafts 20. A U-shaped clamping plate 22 coaxial with the U-shaped groove and clamped with the valve sleeve is fixedly installed at the front end of the substrate 21. A limiting convex edge matching with the annular groove of the valve sleeve is arranged along the inner contour of the inner wall of the U-shaped clamping plate 22. The limiting convex edge is in clearance fit with the annular groove of the valve sleeve to improve the smoothness of taking and placing the valve sleeve, thereby improving the processing efficiency of the valve sleeve. Two positioning blocks 23 symmetric about the U-shaped groove are arranged at the front end of the substrate 21. Limiting posts 24 are arranged on the positioning blocks 23. A pushing plate 25 is slidably installed on the two reciprocating shafts 20. A gear set is jointly arranged between the pushing plate 25 and the two positioning blocks 23. The fine machining device further includes a guiding groove 231 opened on the substrate 21, a locking mechanism 3 arranged on the substrate 21, and a honing mechanism 12 arranged on the frame 10. When the pushing plate 25 moves backward, it pushes the valve sleeve to be closely attached to the substrate 21 for limiting, and at the same time drives the two positioning blocks 23 to move through the gear set. Under the guidance of the guiding groove 231, the two positioning blocks 23 move horizontally towards each other to squeeze and fix the valve sleeve (as Figure 3as shown in the uppermost view and the middle view), and at the same time, the positioning block 23 also rotates coaxially in the reverse direction to drive the corresponding limiting post 24 to abut against the inner top wall of the side hole of the valve sleeve to limit the rotation of the valve sleeve (as Figure 3 shown in the lowermost view). The locking mechanism 3 is used to fix the substrate 21 after pushing the valve sleeve and to interlock the substrate 21 and the positioning block 23 bidirectionally.

[0037] As Figure 1 and Figure 2 shown, the honing mechanism 12 includes a main shaft 120, and two reciprocating shafts 20 are symmetrically arranged left and right. The main shaft 120 coaxial with the U-shaped groove is rotatably installed at the left end of the frame 10 and between the two reciprocating shafts 20, and a honing head 121 is installed on the main shaft 120.

[0038] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 shown, during specific operation, the worker fits the annular groove part of the valve sleeve with the limiting convex edge on the snap ring to pre-fix the valve sleeve, and then the worker pushes the push plate 25 backward to move close to the valve sleeve. When the push plate 25 moves backward, it will drive the two positioning blocks 23 to move synchronously towards the valve sleeve through the gear set, and first make the positioning blocks 23 abut against the outer ring wall of the valve sleeve through the guiding groove 231 (as Figure 3 shown in the middle view in Figure 3 ), and then as the push plate 25 continues to move backward, at this time, the corresponding positioning blocks 23 are driven to rotate through the guiding groove 231 (as

[0039] shown in the lowermost view in

[0040] ). The two positioning blocks 23 rotate synchronously in the reverse direction, and the positioning blocks 23 drive the limiting posts 24 to fit with the inner top wall of the side hole of the valve sleeve to limit the rotation of the valve sleeve. At the same time, the push plate 25 abuts against the valve sleeve and pushes the valve sleeve to abut against and limit the substrate 21, so that the valve sleeve is rigidly fixed comprehensively through the above operations to ensure the stability of the valve sleeve during the subsequent grinding process. Figure 2 , Figure 3 and Figure 5As shown in the figure, two symmetrically arranged and concave-shaped moving seats 232 are slidably installed on the left and right at the front end of the substrate 21. Waist-shaped slots are provided in both vertical sections of the moving seat 232. A positioning block 23 is provided between the two vertical sections of the moving seat 232. Roller shafts 233 penetrating the corresponding waist-shaped slots are fixedly installed at both the front and rear ends of the positioning block 23. The end face of the positioning block 23 close to the axis of the U-shaped groove is an arc surface, and a plurality of pressure rollers 230 are installed on the arc end face of the positioning block 23 to roll along its circumference. A connecting block 234 is fixedly installed at the rear end of the rear roller shaft 233. Two guide posts 235 symmetrically arranged with respect to the corresponding roller shaft 233 are fixedly installed at the rear end of the connecting block 234. Guide slots 231 corresponding to the guide posts 235 one by one are provided on the substrate 21. The guide slot 231 consists of a horizontal section and an arc section connected to one end of the horizontal section close to the U-shaped groove, and the end of the arc section is higher than the horizontal section. The arc section is concentric with the U-shaped groove, and the guide post 235 slidably penetrates the corresponding guide slot 231.

[0041] As Figure 2 , Figure 4 , Figure 6 and Figure 7 shown, the locking mechanism 3 includes a locking post 30. T-shaped locking posts 30 are provided at positions corresponding to the reciprocating shafts 20 one by one on the pushing plate 25. A ball 300 is installed at the lower end of the vertical section of the locking post 30 for rolling. A compression spring 31 sleeved on the outer side of the vertical section of the locking post 30 is connected between the horizontal section of the locking post 30 and the substrate 21. A locking hole cooperating with the locking post 30 is provided on the reciprocating shaft 20. The vertical section of the locking post 30 slidably penetrates the substrate 21 into the corresponding locking hole. A limiting member 32 is provided between the locking post 30 and the moving seat 232.

[0042] As Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 9 shown, the limiting member 32 includes a connecting plate 320. A connecting plate 320 is fixedly installed at the upper ends of the two locking posts 30 together. Plug rods 321 are fixedly installed at positions corresponding to the moving seats 232 at the lower end of the connecting plate 320. The lower ends of the plug rods 321 are inserted into the vertical sections of the corresponding moving seats 232.

[0043] During specific operation, in the initial state, the locking post 30 abuts against the outer wall of the reciprocating shaft 20 through the ball 300, and the compression spring 31 is in a compressed state. After the valve sleeve is clamped and limited with the U-shaped clamping plate 22, the pushing plate 25 is pushed towards the valve sleeve manually or by an existing driving source. Under the elastic force of the compression spring 31, the locking post 30 moves while maintaining the abutment with the reciprocating shaft 20 through the ball 300, so as to reduce the friction between the locking post 30 and the reciprocating shaft 20 and avoid the need for manual continuous lifting of the locking post 30 away from the reciprocating shaft 20.

[0044] When the pushing plate 25 moves backward, it will drive the two moving seats 232 to approach each other through the gear set. The guide posts 235 slide within the horizontal sections of the corresponding guiding grooves 231, causing the two positioning blocks 23 to move horizontally closer to the valve sleeve. The positioning blocks 23 are then fitted to the valve sleeve through the pressure rollers 230 to align and limit the valve sleeve, making the valve sleeve coaxial with the U-shaped groove. At this time, the guide posts 235 are located at the connection between the horizontal section and the arc section of the guiding groove 231, and the limiting posts 24 are located within the corresponding side holes of the valve sleeve but do not contact the inner top wall of the side holes (as shown in the upper middle side view in Figure 4 the upper middle side view shown above, Figure 4 the upper middle side view is the sectional view of the middle view in Figure 3 ). After that, as the pushing plate 25 continues to move backward and drives the moving seat 232 to continue moving towards the valve sleeve, the guide posts 235 slide within the arc sections of the guiding grooves 231, keeping the positioning blocks 23 in a squeezing state against the valve sleeve and only rotating circumferentially along the outer wall of the valve sleeve. The connecting blocks 234 and roller shafts 233 on the right drive the right positioning block 23 to rotate clockwise, and the connecting blocks 234 and roller shafts 233 on the left drive the left positioning block 23 to rotate counterclockwise. The rotation of the two positioning blocks 23 drives the corresponding limiting posts 24 to contact the inner top wall of the corresponding side holes (as shown in the lower middle side view in Figure 4 the lower middle side view shown above, Figure 4 the lower middle side view is the sectional view of the lowermost view in Figure 3 ), thus restricting the rotation of the valve sleeve and further fixing the valve sleeve.

[0045] At this time, the pushing plate 25 contacts the valve sleeve, and at the same time, the valve sleeve is tightly pressed against the base plate 21 for limiting. The locking post 30 is located above the corresponding locking hole. Under the resilience of the compression spring 31, the locking post 30 moves downward and inserts into the corresponding locking hole to restrict the movement of the pushing plate 25. At the same time, the inserting rod 321 will insert into the corresponding moving seat 232, enabling the two-way interlocking of the pushing plate 25 and the moving seat 232, so that the moving seat 232 and the pushing plate 25 restrict each other, thereby ensuring the stability of the fixing of the valve sleeve by the positioning block 23 and the pushing plate 25, and ensuring the quality of subsequent grinding processing.

[0046] It should be noted that when manually fitting the annular groove part of the valve sleeve with the limiting convex edge on the snap ring, the limiting posts 24 are basically aligned with the corresponding side holes of the valve sleeve, making the limiting posts 24 face the inside of the side holes. Even if there is a small deviation in the distance between the left and right limiting posts 24 and the inner top wall of their respective corresponding side holes at this time, during the subsequent process of the limiting posts 24 restricting the rotation of the valve sleeve, this small deviation can be automatically eliminated. Specifically: taking Figure 4Based on the upper middle side view, assume that at this time, the distance between the right limiting post 24 and the inner top wall of the corresponding side hole is greater than the distance between the left limiting post 24 and the inner top wall of the corresponding side hole. During the synchronous rotation of the left and right positioning blocks 23 driving the corresponding limiting posts 24, the left limiting post 24 will first contact the inner top wall of the corresponding side hole. However, at this moment, the positioning block 23 has not rotated to the final position. As the left limiting post 24 continues to rotate, it will push the valve sleeve to adaptively rotate and adjust its position. Because the rolling pressure roller 230 and the clearance fit between the limiting convex edge and the annular groove of the valve sleeve enable the valve sleeve to have a degree of free rotation. When the positioning block 23 rotates to the final position, both the left and right limiting posts 24 are in contact with the inner top wall of the corresponding side hole.

[0047] As Figure 6 and Figure 8 shown, the gear set includes a support seat 40. A support seat 40 is fixedly installed at the front end of the base plate 21 and between the two moving seats 232. The support seat 40 has a concave structure. A spur gear 41 is rotatably installed between the two horizontal longitudinal sections of the support seat 40 through a shaft column. Rack one 42 slidably installed on the support seat 40 is engaged with both the front and rear sides of the spur gear 41. The two racks one 42 are respectively fixedly connected to the corresponding moving seats 232. A driving member 43 for driving the shaft column to rotate is provided on the base plate 21.

[0048] As Figure 6 and Figure 8 shown, the driving member 43 includes a rack two 430. Rack two 430 located above rack one 42 is engaged with the right side of the spur gear 41. Rack two 430 is slidably installed on the support seat 40. The front end of rack two 430 is fixedly connected to the front end of the pushing plate 25 through a fixing plate 431.

[0049] As Figure 2 、 Figure 5 and Figure 8 shown, positioning posts 13 corresponding to the moving seats 232 are fixedly installed at the front end of the frame 10. The front ends of the positioning posts 13 slidably penetrate through the base plate 21. Positioning holes 14 corresponding to the positioning posts 13 are penetrated and opened on the moving seats 232.

[0050] During specific operation, when the pushing plate 25 moves towards the valve sleeve, the second rack 430 drives the spur gear 41 to rotate. The spur gear 41 then drives the two first racks 42 to move towards each other. The two first racks 42 drive the two moving seats 232 to approach each other. The moving seats 232 drive the positioning blocks 23 to contact the outer wall of the valve sleeve under the cooperation of the guiding grooves 231. When the pushing plate 25 continues to move, it drives the moving seats 232 to continue moving through the cooperation of the second rack 430, the spur gear 41 and the first racks 42. Then, under the cooperation of the guiding grooves 231, the two positioning blocks 23 rotate in opposite directions, driving the limiting post 24 to contact the inner top wall of the side hole of the valve sleeve to limit the rotation of the valve sleeve. At this time, the pushing plate 25 pushes the valve sleeve to closely contact and be limited by the substrate 21.

[0051] Then, the honing head 121 rotates, and the existing reciprocating mechanism inside the frame 10 drives the reciprocating shaft 20 to reciprocate back and forth. The reciprocating shaft 20 drives the substrate 21 and the fixed valve sleeve to approach the honing head 121. Before the valve sleeve is sleeved on the honing head 121, the positioning post 13 first inserts into the positioning hole 14 to guide and limit the movement of the moving seat 232, thereby further ensuring the stability of the valve sleeve. Then, the reciprocating shaft 20 drives the valve sleeve to continue moving backward, sleeving the valve sleeve on the honing head 121. Subsequently, the reciprocating shaft 20 drives the fixed valve sleeve to reciprocate back and forth, and the rotating honing head 121 grinds the inner wall of the valve sleeve.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself. In addition, in the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A finishing device for a liquid filling valve assembly, comprising a frame and a receiving box mounted at the front end thereof; characterized in that: Further included are: A fixing mechanism, which is arranged at the front end of the frame and inside the accommodating box. The fixing mechanism includes two reciprocating shafts slidably mounted back and forth at the front end of the frame. A substrate with a U-shaped groove is fixedly mounted on the two reciprocating shafts together. A U-shaped clamping plate coaxial with the U-shaped groove and clamped with the valve sleeve is fixedly mounted at the front end of the substrate. Two positioning blocks symmetrically arranged left and right with respect to the U-shaped groove are provided at the front end of the substrate. Limiting columns are arranged on the positioning blocks. A pushing plate is slidably mounted on the two reciprocating shafts together. A gear set is jointly arranged between the pushing plate and the two positioning blocks; A guiding groove is opened at the position of the substrate corresponding to the positioning blocks. When the pushing plate moves backward to push the valve sleeve so that the valve sleeve is closely attached to and limited by the substrate, the two positioning blocks are driven to move through the gear set. Under the guidance of the guiding groove, the two positioning blocks first move horizontally and towards each other synchronously to squeeze and fix the valve sleeve, and then rotate in the opposite direction synchronously to drive the corresponding limiting columns to abut against the inner wall of the side hole of the valve sleeve to limit the rotation of the valve sleeve; A locking mechanism, which is arranged on the substrate and is used for locking the substrate and mutually locking the substrate and the positioning blocks bidirectionally after the valve sleeve is limited and fixed; An honing mechanism, which is arranged on the frame and is used for polishing the inner wall of the valve sleeve.

2. The finishing device for a liquid-filled valve assembly according to claim 1, wherein: Two symmetrically arranged and concave-structured moving seats are slidably mounted left and right at the front end of the substrate. Waist-shaped grooves are opened in the two vertical sections of the moving seats. A positioning block is arranged between the two vertical sections of the moving seats. Roller shafts penetrating through the corresponding waist-shaped grooves are fixedly mounted at both the front and rear ends of the positioning block.

3. The finishing device for a liquid filling valve assembly according to claim 2, characterized in that: A connecting block is fixedly mounted at the rear end of the rear roller shaft. Two guide posts symmetrically arranged with respect to the corresponding roller shaft are fixedly mounted at the rear end of the connecting block. Guiding grooves corresponding to the guide posts one by one are opened on the substrate. The guiding grooves consist of a horizontal section and an arc section communicated with one end of the horizontal section close to the U-shaped groove, and the end of the arc section is higher than the horizontal section. The arc section is concentric with the U-shaped groove. The guide posts slidably penetrate through the corresponding guiding grooves.

4. The finishing device for a liquid filling valve assembly according to claim 2, wherein: The locking mechanism includes locking posts. T-shaped locking posts are arranged at the positions corresponding to the reciprocating shafts on the pushing plate. A compression spring sleeved outside the vertical section of the locking post is connected between the horizontal section of the locking post and the substrate. Locking holes cooperating with the locking posts are opened on the reciprocating shafts. The vertical section of the locking post slidably penetrates through the substrate to the corresponding locking holes. A limiting member is arranged between the locking post and the moving seat.

5. The finishing device for a liquid filling valve assembly according to claim 2, characterized in that: The gear set includes a support seat. A support seat is fixedly mounted at the front end of the substrate and between the two moving seats. The support seat is of a concave structure. A spur gear is rotatably mounted between the two horizontal longitudinal sections of the support seat through a shaft column. Rack one slidably mounted on the support seat is engaged with both the front and rear sides of the spur gear. The two rack ones are respectively fixedly connected with the corresponding moving seats. A driving member for driving the shaft column to rotate is arranged on the substrate.

6. The finishing device for a liquid filling valve assembly according to claim 4, wherein: The limiting member includes a connecting plate. A connecting plate is fixedly mounted at the upper ends of the two locking posts together. Plug rods are fixedly mounted at the positions corresponding to the moving seats at the lower end of the connecting plate. The lower ends of the plug rods are inserted into the vertical sections of the corresponding moving seats.

7. The finishing device for a liquid filling valve assembly according to claim 5, wherein: The driving member includes rack two. Rack two located above rack one is engaged with the right side of the spur gear. Rack two is slidably mounted on the support seat. Rack two is engaged with the spur gear. The front end of rack two is fixedly connected with the front end of the pushing plate through a fixing plate.

8. The finishing device for a liquid filling valve assembly according to claim 2, characterized in that: At the front end of the frame, positioning columns corresponding to the moving seats are fixedly installed. The front ends of the positioning columns slide through the substrate, and positioning holes corresponding to the positioning columns are formed through the moving seats.

9. The finishing device for a liquid filling valve assembly according to claim 1, characterized in that: The end face of the positioning block close to the axis of the U-shaped groove is an arc surface, and a plurality of pressure rollers are installed to roll along the circumferential direction of the arc end face of the positioning block.

10. The finishing device for a liquid filling valve assembly according to claim 1, characterized in that: Along the inner contour of the inner wall of the U-shaped clamping plate, a limiting convex edge matching the annular groove of the valve sleeve is provided.

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