CN222403744U - A valve core length trimming device - Google Patents
A valve core length trimming device Download PDFInfo
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- CN222403744U CN222403744U CN202420155695.XU CN202420155695U CN222403744U CN 222403744 U CN222403744 U CN 222403744U CN 202420155695 U CN202420155695 U CN 202420155695U CN 222403744 U CN222403744 U CN 222403744U
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- 238000009966 trimming Methods 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 80
- 239000000428 dust Substances 0.000 claims abstract description 58
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 11
- 238000003825 pressing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the field of valve core length trimming equipment, in particular to valve core length trimming equipment, which aims at the existing technology that although metal parts can be cut, metal dust can be generated in the cutting process, dust is not collected in the cutting process, the dust drifts to the periphery through air circulation, the pollution problem is caused to the surrounding environment, and the utility model provides a scheme which comprises a machine body, wherein supporting legs are fixedly arranged at two sides of the bottom of the machine body, a reinforcing plate is fixedly arranged at one side of the machine body, the top of gusset plate is fixed and is provided with first cover body, the fixed first motor that is provided with in top inner wall of first cover body, the fixed first lead screw that is provided with of output of first motor, the bottom of first lead screw and the bottom of first cover body can collect the dust through dust extraction, reduces peripheral pollution, can carry out the centre gripping fixed to the case through fixed establishment, can remove the blade through moving mechanism, is convenient for cut.
Description
Technical Field
The utility model relates to the technical field of valve core length trimming equipment, in particular to valve core length trimming equipment.
Background
The valve core is a valve part of which the valve body can realize the basic functions of direction control, pressure control or flow control by virtue of the movement of the valve body, and the length of the valve core needs to be trimmed in the process of producing the valve core.
Through retrieving, the patent of bulletin number CN219130920U discloses a metalwork cutting device, including cutting board, stand, cutting piece, pressure hold piece and clearance piece, one side fixedly connected with stand of cutting board, sliding connection has the cutting piece on the stand, the cooperation is provided with the pressure and holds the piece on the cutting piece, the cooperation is provided with the clearance piece on the cutting board. According to the metal piece cutting device, the pressing pieces are arranged on the two sides of the cutting piece, when the cutting piece cuts the metal piece, the pressing pieces can be firstly contacted with the metal piece, the pressing of the pressing pieces can prevent the metal piece from shaking during cutting, the end face of the cut metal piece can be kept flat, and through the design of the cleaning piece, the cutting table can be cleaned after the metal piece is cut, so that the cutting table can be kept clean, and the cutting of the metal piece is ensured to be flat.
The following problems exist in the technical scheme:
Although the metal piece can be cut, metal dust can be generated in the cutting process, dust is not collected in the cutting process, and the dust drifts to the periphery through air circulation, so that the pollution to the surrounding environment is caused.
Disclosure of utility model
The utility model aims to solve the problems that in the prior art, although metal pieces can be cut, metal dust can be generated in the cutting process, dust is not collected in the cutting process, the dust drifts to the periphery through air circulation, and pollution is caused to the surrounding environment, and the valve core length trimming equipment is provided.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a case length trimming equipment, includes the organism, the bottom both sides of organism are all fixed to be provided with the landing leg, one side of organism is fixed to be provided with the gusset plate, the top of gusset plate is fixed to be provided with first cover body, the top inner wall of first cover body is fixed to be provided with first motor, the output of first motor is fixed to be provided with first lead screw, the bottom of first lead screw is connected with the bottom inner wall rotation of first cover body, one side inner wall sliding connection of first cover body has the connecting plate, one side of connecting plate is embedded to have first lead screw nut, first lead screw nut and first lead screw threaded connection, one side of connecting plate is fixed to be provided with the second cover body, the bottom of second cover body is equipped with the cutting cover, one side inner wall of cutting cover is equipped with the mounting panel, one side that the output of second motor runs through the cutting cover and is fixed with one side of mounting panel, one side of mounting panel passes through the blade that the bolt fastening is used for cutting, the bottom of organism has seted up the cutting through-hole, the cutting through-hole is unanimous with the horizontal sliding connection of blade top of organism;
The dust collection mechanism is arranged on the second cover body and used for collecting metal dust generated during cutting;
The fixing mechanism is arranged on one side of the long plate and used for fixing the valve core;
And the moving mechanism is arranged in the second cover body and used for moving the blade.
In a possible design, dust absorption mechanism is including suction hood, fan and filter screen, the top fixed connection of the bottom of suction hood and the second cover body, the through-hole has been seted up to one side of suction hood, the suction inlet of fan and one side fixed connection of suction hood, the suction inlet of fan covers the through-hole, the slot has all been seted up to the top inner wall and the bottom inner wall of suction hood, the inner wall sliding connection of top and bottom and two slots respectively of filter screen, one side of suction hood has the dismantlement door through the bolt fastening, one side of suction hood is fixed and is provided with flexible hose and is linked together, one end of flexible hose and one side fixed connection and the link together of cutting hood.
In one possible design, the fixing mechanism comprises a fixing plate, a first clamping plate, a second clamping plate and a threaded rod, one side of the fixing plate is fixedly connected with one side of the long plate, one side of the first clamping plate is in sliding connection with one side of the long plate, one side of the second clamping plate is fixedly connected with one side of the long plate, the threaded rod is in threaded connection with the fixing plate, one end of the threaded rod is rotationally connected with one side of the first clamping plate, and a torsion bar which is convenient for the threaded rod to rotate is welded at the other end of the threaded rod.
In one possible design, the moving mechanism comprises a third motor, a second screw rod and a moving block, wherein the top of the third motor is fixedly connected with the inner wall of the top of the second cover body, one end of the second screw rod is fixedly connected with the output end of the third motor, the other end of the second screw rod is rotationally connected with one side inner wall of the second cover body, the top of the moving block is slidably connected with the inner wall of the top of the second cover body, a second screw rod nut is embedded in one side of the moving block, the second screw rod nut is in threaded connection with the second screw rod, and the bottom of the moving block is welded with the top of the cutting cover.
In one possible design, an electric push rod for pushing the long plate to move is fixedly arranged on the inner wall of one side of the machine body, a square plate is fixedly arranged on the telescopic part of the electric push rod, and one side of the square plate is fixedly connected with one side of the long plate.
In one possible design, a sliding groove is formed in one side of the long plate, a sliding block is fixedly arranged on one side of the first clamping plate, and one side of the sliding block is in sliding connection with the inner wall of the sliding groove.
In one possible design, the bottom inner wall of the machine body is fixedly provided with a frame, the bottom inner wall of the frame is slidably connected with a collecting box, one side of the collecting box is fixedly provided with a handle, and the collecting box is located right below the cutting through hole.
In the application, when in use, the valve core with the length required to be trimmed is taken out, the valve core is taken to one side between the first clamping plate and the second clamping plate and is attached to one side of the second clamping plate, then the torsion bar is rotated, the rotation of the torsion bar drives the rotation of the threaded rod, the rotation of the threaded rod drives the movement of the first clamping plate, one side of the first clamping plate is attached to one side of the valve core, so that the valve core can be clamped and fixed, then the electric push rod is started, the expansion and contraction of the expansion and contraction part of the electric push rod drives the movement of the long plate, the movement of the valve core after the fixation is driven by the movement of the long plate, the movement of the valve core can be carried out according to the length required to be cut, then the third motor is started, the rotation of the output end of the third motor drives the second screw rod, the movement of the moving block is driven by the movement of the moving plate, the moving block is driven by the moving block, the moving of the moving cover is driven by the moving block, the moving blade is driven by the moving cover is driven by the moving plate, the moving blade is positioned right above the valve core, the cutting cover is driven by the moving plate, the cutting cover is driven by the moving the blade is positioned on the cutting cover, so that the cutting cover is positioned right above the cutting blade is convenient to cut, the cutting is convenient to cut, then starting the cutting cover is driven by the moving the cutting plate is driven by the moving blade to move plate, the cutting plate is fixed. When the dust is conveyed into the dust hood through the cutting cover and the telescopic hose, the dust can be filtered and intercepted through the filter screen when passing through the filter screen, and filtered air flow is discharged through the output port of the fan, so that the dust can be collected, and the pollution to the periphery is reduced.
According to the valve core length trimming equipment, the fan is started in the cutting process through the dust collection mechanism, suction is generated by starting the fan, dust generated in cutting is conveyed into the dust collection cover through the cutting cover and the telescopic hose, when the dust passes through the filter screen, the dust is filtered and intercepted through the filter screen, and filtered air flow is discharged through the output port of the fan, so that the dust can be collected, and the pollution to the periphery is reduced;
According to the valve core length trimming device, the valve core is taken between the first clamping plate and the second clamping plate through the fixing mechanism and is attached to one side of the second clamping plate, then the torsion bar is rotated, the rotation of the torsion bar drives the rotation of the threaded rod, the rotation of the threaded rod drives the movement of the first clamping plate, one side of the first clamping plate is attached to one side of the valve core, and therefore the valve core can be clamped and fixed;
According to the valve core length trimming device, the third motor is started through the moving mechanism, the rotation of the output end of the third motor drives the second screw rod to rotate, the rotation of the second screw rod drives the moving block to move, the moving block drives the cutting cover to move, the cutting cover moves to drive the second motor, the mounting plate and the blade to move, and the blade is located right above the valve core, so that the blade can be moved, and cutting is facilitated;
The utility model has reasonable structure, dust can be collected through the dust collection mechanism, the pollution to the periphery is reduced, the valve core can be clamped and fixed through the fixing mechanism, the blade can be moved through the moving mechanism, and the cutting is convenient.
Drawings
Fig. 1 is a schematic diagram of a front view structure of a valve element length trimming device according to the present utility model;
fig. 2 is a schematic side view of a valve core length trimming device according to the present utility model;
fig. 3 is a schematic structural view of a moving mechanism of the valve element length trimming device according to the present utility model;
Fig. 4 is a schematic structural view of a fixing mechanism of the valve core length trimming device according to the present utility model;
FIG. 5 is a schematic view showing a structure of a valve core length trimming device in a state of separating a disassembly door from a dust hood;
fig. 6 is a schematic diagram of a part of a valve core length trimming device according to the present utility model.
The device comprises a machine body 1, a first cover body 2, a first screw rod 3, a first motor 4, a connecting plate 5, a second cover body 6, a fan 7, a dust hood 8, a dust hood 9, a dismantling door 10, a moving block 11, a cutting cover 12, a second motor 13, a blade 14, an electric push rod 15, a long plate 16, a frame 17, a collecting box 18, a telescopic hose 19, a cutting through hole 20, a first clamping plate 21, a second clamping plate 22, a sliding chute 23, a threaded rod 24, a fixed plate 25, a filter screen 26, a mounting plate 27, a third motor 28 and a second screw rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Example 1
Referring to FIGS. 1-6, a valve core length trimming device is applied to the field of valve core length trimming devices, and comprises a machine body 1, supporting legs are fixedly arranged on two sides of the bottom of the machine body 1, a reinforcing plate is fixedly arranged on one side of the machine body 1, a first cover body 2 is fixedly arranged at the top of the reinforcing plate, a first motor 4 is fixedly arranged on the inner wall of the top of the first cover body 2, a first screw rod 3 is fixedly arranged at the output end of the first motor 4, the bottom end of the first screw rod 3 is rotationally connected with the inner wall of the bottom of the first cover body 2, a connecting plate 5 is slidably connected with one side inner wall of the first cover body 2, a first screw rod nut is embedded in one side of the connecting plate 5, the first screw rod nut is in threaded connection with the first screw rod 3, a second cover body 6 is fixedly arranged on one side of the connecting plate 5, a cutting cover 11 is arranged at the bottom of the second cover body 6, a second motor 12 is fixedly arranged on one side of the cutting cover 11, a mounting plate 26 is arranged on one side inner wall of the cutting cover 11, an output end of the second motor 12 penetrates through one side of the cutting cover 11 and is fixedly connected with one side of the mounting plate 26, one side of the mounting plate 26 is fixedly connected with a through a cutting blade 13 which is fixedly used for cutting the bottom blade 1, a horizontal through hole 19 is provided with a horizontal through hole 15 of the machine body 1, and a horizontal through hole 15 is connected with the machine body is formed;
the dust collection mechanism is arranged on the second cover body 6 and used for collecting metal dust generated during cutting;
The fixing mechanism is arranged on one side of the long plate 15 and used for fixing the valve core;
And a moving mechanism provided in the second cover 6 for moving the blade 13.
Above-mentioned technical scheme can collect the dust through dust extraction, reduces the pollution to periphery, can carry out the centre gripping fixed to the case through fixed establishment, can remove blade 13 through moving mechanism, is convenient for cut.
Referring to fig. 1-5, the dust absorption mechanism comprises a dust absorption cover 8, a fan 7 and a filter screen 25, wherein the bottom of the dust absorption cover 8 is fixedly connected with the top of the second cover body 6, a through hole is formed in one side of the dust absorption cover 8, a dust absorption opening of the fan 7 is fixedly connected with one side of the dust absorption cover 8, the dust absorption opening of the fan 7 covers the through hole, slots are formed in the inner walls of the top and the bottom of the dust absorption cover 8, the top and the bottom of the filter screen 25 are respectively in sliding connection with the inner walls of the two slots, a disassembling door 9 is fixedly arranged on one side of the dust absorption cover 8 through bolts, a telescopic hose 18 is fixedly arranged on one side of the dust absorption cover 8 and is communicated with one side of the cutting cover 11, and one end of the telescopic hose 18 is fixedly connected with one side of the cutting cover 11 and is communicated with one side of the cutting cover 11.
Above-mentioned technical scheme starts fan 7 at the in-process of cutting, fan 7's start-up produces suction, produce the dust when cutting and carry to the suction hood 8 through cutting cover 11 and flexible hose 18 in, when the dust is through filter screen 25, can filter the interception through filter screen 25, the air current after the filtration is discharged through fan 7's delivery outlet, thereby can collect the dust, reduce the pollution to the periphery, wherein dismantle one side of door 9 and set up the sealing washer, not shown in the figure, be used for improving the leakproofness of dismantling between door 9 and the suction hood 8, the material of filter screen 25 can select HEPA filter screen, or other materials.
Referring to fig. 4, the fixing mechanism includes a fixing plate 24, a first clamping plate 20, a second clamping plate 21 and a threaded rod 23, one side of the fixing plate 24 is fixedly connected with one side of the long plate 15, one side of the first clamping plate 20 is slidably connected with one side of the long plate 15, one side of the second clamping plate 21 is fixedly connected with one side of the long plate 15, the threaded rod 23 is in threaded connection with the fixing plate 24, one end of the threaded rod 23 is rotatably connected with one side of the first clamping plate 20, and a torsion bar for facilitating rotation of the threaded rod 23 is welded at the other end of the threaded rod 23.
According to the technical scheme, the valve core is taken between the first clamping plate 20 and the second clamping plate 21 and is attached to one side of the second clamping plate 21, then the torsion bar is rotated, the rotation of the torsion bar drives the rotation of the threaded rod 23, the rotation of the threaded rod 23 drives the movement of the first clamping plate 20, one side of the first clamping plate 20 is attached to one side of the valve core, and therefore the valve core can be clamped and fixed.
Referring to fig. 3, the moving mechanism includes a third motor 27, a second screw rod 28 and a moving block 10, wherein the top of the third motor 27 is fixedly connected with the top inner wall of the second cover 6, one end of the second screw rod 28 is fixedly connected with the output end of the third motor 27, the other end of the second screw rod 28 is rotatably connected with one side inner wall of the second cover 6, the top of the moving block 10 is slidably connected with the top inner wall of the second cover 6, a second screw rod nut is embedded in one side of the moving block 10, the second screw rod nut is in threaded connection with the second screw rod 28, and the bottom of the moving block 10 is welded with the top of the cutting cover 11.
Above-mentioned technical scheme starts the third motor 27, and the rotation of third motor 27 output has driven the rotation of second lead screw 28, and the rotation of second lead screw 28 has driven the removal of movable block 10, and the removal of movable block 10 has driven the removal of cutting cover 11, and the removal of cutting cover 11 has driven the removal of second motor 12, mounting panel 26 and blade 13, makes blade 13 be located the case directly over to can remove blade 13, be convenient for cut.
Example two
Referring to fig. 1-6, the improvement is based on the first embodiment:
Referring to fig. 1, an electric push rod 14 for pushing a long plate 15 to move is fixedly arranged on one side inner wall of a machine body 1, a square plate is fixedly arranged on a telescopic part of the electric push rod 14, and one side of the square plate is fixedly connected with one side of the long plate 15.
Above-mentioned technical scheme starts electric putter 14, and the flexible portion of electric putter 14 stretches out and draws back has driven the removal of longboard 15, and the removal of longboard 15 has driven the removal of fixed back case, can move according to the length of needs cutting.
Referring to fig. 4, a sliding groove 22 is formed in one side of the long plate 15, a sliding block is fixedly arranged on one side of the first clamping plate 20, and one side of the sliding block is slidably connected with the inner wall of the sliding groove 22.
The above technical solution can reduce friction force and move more smoothly when the first clamping plate 20 moves through the sliding groove 22 and the sliding block.
Referring to fig. 1, a frame 16 is fixedly provided on the bottom inner wall of the machine body 1, a collecting box 17 is slidably connected to the bottom inner wall of the frame 16, a handle is fixedly provided on one side of the collecting box 17, and the collecting box 17 is located right below the cutting through hole 19.
The above technical solution can collect the scraps falling from the inside of the cutting through hole 19 by the collection box 17.
However, as well known to those skilled in the art, the working principles and wiring methods of the electric putter 14, the first motor 4, the second motor 12, and the third motor 27 are well known, which are all conventional means or common general knowledge, and will not be described herein in detail, and any optional matching may be performed by those skilled in the art according to their needs or convenience.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The utility model provides a case length trimming equipment, its characterized in that, including organism (1), the bottom both sides of organism (1) are all fixed and are provided with the landing leg, one side of organism (1) is fixed and is provided with the gusset plate, and the top of gusset plate is fixed and is provided with first cover body (2), the top inner wall of first cover body (2) is fixed and is provided with first motor (4), the output of first motor (4) is fixed and is provided with first lead screw (3), the bottom of first lead screw (3) rotates with the bottom inner wall of first cover body (2) to be connected, one side inner wall sliding connection of first cover body (2) has connecting plate (5), one side of connecting plate (5) is embedded to have first lead screw nut, first lead screw nut and first lead screw (3) threaded connection, one side of connecting plate (5) is fixed and is provided with second cover body (6), the bottom of second cover body (6) is equipped with cutting cover (11), one side of cutting cover (11) is fixed and is provided with second motor (12), the bottom of cutting cover (11), one side inner wall (26) is equipped with cutting through the mounting panel (26) and cutting one side (13) is used for fixing one side of cutting through the mounting panel (13), a cutting through hole (19) is formed in the bottom of the machine body (1), the cutting through hole (19) is horizontally consistent with the blade (13), and the top of the machine body (1) is connected with a long plate (15) in a sliding manner;
the dust collection mechanism is arranged on the second cover body (6) and used for collecting metal dust generated during cutting;
The fixing mechanism is arranged on one side of the long plate (15) and used for fixing the valve core;
And the moving mechanism is arranged in the second cover body (6) and used for moving the blade (13).
2. The valve core length trimming device according to claim 1, wherein the dust collection mechanism comprises a dust collection cover (8), a fan (7) and a filter screen (25), the bottom of the dust collection cover (8) is fixedly connected with the top of the second cover body (6), a through hole is formed in one side of the dust collection cover (8), a dust collection opening of the fan (7) is fixedly connected with one side of the dust collection cover (8), the dust collection opening of the fan (7) covers the through hole, slots are formed in the inner wall of the top and the inner wall of the bottom of the dust collection cover (8), the top and the bottom of the filter screen (25) are respectively connected with the inner walls of the two slots in a sliding mode, a disassembling door (9) is fixedly arranged on one side of the dust collection cover (8) through bolts, a telescopic hose (18) is fixedly arranged on one side of the dust collection cover (8) and is communicated with one side of the cutting cover (11).
3. The valve core length trimming device according to claim 1, wherein the fixing mechanism comprises a fixing plate (24), a first clamping plate (20), a second clamping plate (21) and a threaded rod (23), one side of the fixing plate (24) is fixedly connected with one side of the long plate (15), one side of the first clamping plate (20) is slidably connected with one side of the long plate (15), one side of the second clamping plate (21) is fixedly connected with one side of the long plate (15), the threaded rod (23) is in threaded connection with the fixing plate (24), one end of the threaded rod (23) is rotatably connected with one side of the first clamping plate (20), and a torsion bar which facilitates rotation of the threaded rod (23) is welded at the other end of the threaded rod (23).
4. The valve core length trimming device according to claim 1, wherein the moving mechanism comprises a third motor (27), a second screw rod (28) and a moving block (10), the top of the third motor (27) is fixedly connected with the top inner wall of the second cover body (6), one end of the second screw rod (28) is fixedly connected with the output end of the third motor (27), the other end of the second screw rod (28) is rotatably connected with one side inner wall of the second cover body (6), the top of the moving block (10) is slidably connected with the top inner wall of the second cover body (6), a second screw rod nut is embedded in one side of the moving block (10), the second screw rod nut is in threaded connection with the second screw rod (28), and the bottom of the moving block (10) is welded with the top of the cutting cover (11).
5. The valve core length trimming device according to claim 1, wherein an electric push rod (14) for pushing the long plate (15) to move is fixedly arranged on the inner wall of one side of the machine body (1), a square plate is fixedly arranged on the telescopic part of the electric push rod (14), and one side of the square plate is fixedly connected with one side of the long plate (15).
6. A valve core length trimming device according to claim 3, characterized in that a chute (22) is provided on one side of the long plate (15), a slider is fixedly provided on one side of the first clamping plate (20), and one side of the slider is slidably connected with the inner wall of the chute (22).
7. The valve core length trimming device according to claim 1, characterized in that a frame (16) is fixedly arranged on the inner bottom wall of the machine body (1), a collecting box (17) is slidably connected to the inner bottom wall of the frame (16), a handle is fixedly arranged on one side of the collecting box (17), and the collecting box (17) is located right below the cutting through hole (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420155695.XU CN222403744U (en) | 2024-01-23 | 2024-01-23 | A valve core length trimming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420155695.XU CN222403744U (en) | 2024-01-23 | 2024-01-23 | A valve core length trimming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222403744U true CN222403744U (en) | 2025-01-28 |
Family
ID=94342231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420155695.XU Active CN222403744U (en) | 2024-01-23 | 2024-01-23 | A valve core length trimming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222403744U (en) |
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2024
- 2024-01-23 CN CN202420155695.XU patent/CN222403744U/en active Active
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