A roller plating device for galvanizing automobile parts with adjustable inner diameter and its use method
By designing a roller plating device with adjustable inner diameter, the problem of touching automobile parts during the roller plating process is solved, and the galvanizing effect is improved and the consistency of the coating is achieved.
Patent Information
- Application Number
- CN202211136266.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-19
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2042-09-19
AI Technical Summary
Auto parts are prone to large-area touches during the rolling process, which affects the galvanizing effect, resulting in inconsistent plating and metal precipitation.
A roller plating device with adjustable inner diameter is designed to adjust the ruler diameter of the drum lining cylinder through the adjustment component to ensure that the spacing of the automobile parts in the drum is suitable for longitudinal passage, and avoid mutual bonding and conduction.
It improves the galvanizing effect of automotive parts, ensures consistency of the coating, reduces metal precipitation, is convenient to operate and does not require disassembly of the roller.
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Figure CN115467006B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of roller plating, in particular to a roller plating device for galvanizing automobile parts with adjustable inner diameter and a use method thereof. Background Art
[0002] Before assembly, automotive parts need to be barrel-plated on their surfaces to improve the corrosion resistance of the product.
[0003] Roll plating is a process of placing a certain number of small parts in a drum, and depositing one or more layers of metal or alloy coating on the surface of the parts through conduction between the small parts and between the small parts and the cathode electrode head. Therefore, the conductivity between the electrode head and the parts has an important influence on the electroplating efficiency and the consistency of the product coating.
[0004] Generally, automobile parts and cathode electrode heads are pressed together by gravity to achieve conduction. Due to the varied shapes of automobile parts, a large number of automobile parts are very likely to have large-area contact during roller plating, which in turn affects the galvanizing effect of automobile parts, resulting in different surface galvanizing effects of automobile parts. Plated metal is continuously precipitated on the exposed surfaces of automobile parts, resulting in more and more metal precipitation on the outside of the exposed automobile parts, affecting the electroplating effect. Therefore, a roller plating device for galvanizing automobile parts with adjustable inner diameter and a method for using the same are proposed. Summary of the invention
[0005] The object of the present invention is to provide a roller plating device for galvanizing automobile parts with adjustable inner diameter and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.
[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a barrel plating device for galvanizing automobile parts with adjustable inner diameter, comprising a support plate for supporting, a barrel for loading automobile parts and then barrel plating them is arranged on the inner side of the support plate, an inner lining cylinder is arranged inside the barrel, an adjusting component for adjusting the diameter of the inner lining cylinder is arranged on one side of the inner lining cylinder, and a positioning component is connected to one side of the adjusting component;
[0007] Among them, the adjustment component is used to adjust the diameter of the inner liner tube, and then the adjusted diameter of the inner liner tube is fixed by the positioning component.
[0008] Preferably, the adjustment assembly includes a rotating member and a fixing member, the fixing member is used to adjust the outer diameter of the inner liner, and the rotating member adjusts the outer periphery of the inner liner to smoothness;
[0009] The rotating member includes a rotating shaft arranged inside the drum, the rotating shaft is arranged at the center of the inner liner, one side of the rotating shaft is connected to a rotating plate, one side of the rotating plate is arranged with a rotating wheel, one side of the rotating wheel is arranged with a threaded barrel, a positioning rod is inserted inside the threaded barrel, one side of the positioning rod is provided with a threaded portion, and the threaded portion and the threaded barrel cooperate with each other;
[0010] The fixing member comprises an adjusting screw barrel arranged on one side of the outer circumference of the drum, a threaded rod is arranged inside the adjusting screw barrel, a rotating barrel is connected to the side of the threaded rod away from the adjusting screw barrel, and the rotating barrel is arranged on the outer side of the inner liner barrel;
[0011] An inner thread ring is screwed on the outer circumference of the threaded rod, and the elongation of the threaded rod can be adjusted by rotating the inner thread ring on the outside of the threaded rod.
[0012] Preferably, a plurality of groups of positioning holes are opened on one side of the rotating wheel, and the plurality of groups of positioning holes are arranged around the center of the rotating wheel.
[0013] Preferably, the plurality of groups of positioning holes and the threaded barrels cooperate with each other so that the positioning rods can be inserted into the positioning holes through the threaded barrels.
[0014] Preferably, a driving shaft is arranged on the upper part of the bracket plate, a driving gear is connected to one side of the driving shaft, a transmission gear is meshedly connected to one side of the driving gear, the transmission gear cooperates with a driven gear, and the driven gear is arranged on one side of the drum;
[0015] The driving shaft drives the driving gear to rotate, and the drum on the driven gear side is rotated through the transmission gear, so that the automobile parts loaded inside the drum are rolled.
[0016] Preferably, an end plate is provided at the rear end of the inner liner, and the shape of the end plate is arc-shaped.
[0017] Preferably, an adjustment groove is provided on one side of the outer circumference of the inner liner, and the end plate rotates in an arc shape inside the adjustment groove through an inner block.
[0018] Preferably, a bearing sleeve is provided in the middle of the rotating plate for connecting the rotating wheel to the rotating shaft for rotation.
[0019] Preferably, a cover plate is provided on one side of the drum, and bolt rods for pulling the cover plate are provided on both sides of the cover plate.
[0020] A method for using a barrel plating device for galvanizing automobile parts with adjustable inner diameter, comprising the following steps:
[0021] Step (A): First, hold the bolt rod with both hands and remove the cover plate from the outer circumference of the drum, so that a gap is opened in the drum, and then the automobile parts to be galvanized are guided into the drum through the gap where the cover plate is removed, and then the cover plate is restored to the outer circumference of the drum and the drum is closed;
[0022] Step (B), positively twisting the inner thread ring located outside the drum, so that the inner thread ring rotates on the outer circumference of the threaded rod through the internal thread, thereby controlling the extension and retraction of the threaded rod, and connecting the inner liner to expand outward or roll inward until the gap between the outer wall of the inner liner and the inner wall of the drum is large enough for two automobile parts to pass through at the same time;
[0023] Step (C), rotating the positioning rod forward, driving the threaded portion of the positioning rod to rotate out of the positioning hole through the threaded tube, and rotating the positioning rod to drive the rotating wheel to rotate;
[0024] Step (D), the rotating wheel drives the rotating shaft to rotate inside the drum through the bearing sleeve, driving the inner liner tube on the outer periphery of the rotating shaft to rotate, and adjusting the diameter of the inner liner tube;
[0025] Step (D1), when the wheel rotates forward: the rotating shaft connected to the inner liner rotates forward, and the adjustment groove of the inner liner rotates to the right at the bottom of the end plate through the inner block, so that the end plate gradually fits to the outer periphery of the inner liner, and the outer diameter of the inner liner becomes smaller;
[0026] Step (D2), when the wheel rotates in the reverse direction: the rotating shaft connected to the inner liner rotates in the reverse direction, and the adjusting groove of the inner liner rotates to the left at the lower part of the end plate through the inner block, so that the end plate gradually moves away from the outer periphery of the inner liner, and the outer diameter of the inner liner becomes larger;
[0027] Step (D3), when fine-tuning the diameter of the inner liner: rotate the inner thread ring forward or reverse to drive the threaded rod to extend or retract, control the position of the outer periphery of the inner liner, and allow the end plate to slide inside the adjustment groove through the inner block to fine-tune the diameter of the inner liner.
[0028] Step (E), reversely twist the positioning rod, rotate it inside the threaded tube through the threaded portion, drive the positioning rod to be inserted into the positioning hole through the rotating wheel, complete the positioning of the rotating wheel, and fix the diameter of the inner liner tube.
[0029] Compared with the prior art, the present invention has the following beneficial effects:
[0030] The present invention uses an adjustment component to adjust the inner diameter of the roller by external rotation, and controls the distance between the roller and the inner liner so that the distance between the two can only meet the longitudinal passage of two automobile parts, ensuring that the cathode electrode head does not fit each other when electroplating the automobile parts, and avoids that multiple automobile parts fit each other and are connected to the cathode electrode head at the same time, thereby improving the electroplating effect of the automobile parts.
[0031] At the same time, when multiple auto parts are guided into the drum, the auto parts can be automatically arranged in the gap between the drum and the inner liner, so that the auto parts fit the inner wall of the drum. During the rotation of the drum, they roll down from the high position to the low position of the drum in sequence, thus completing the position exchange between the auto parts and ensuring the galvanizing efficiency.
[0032] The external adjustment method is adopted, and there is no need to disassemble the drum. The operation is convenient and avoids unnecessary waste of manpower caused by disassembling the drum.
[0033] The diameter of the inner lining tube inside the drum can be flexibly adjusted to meet the needs of barrel plating of different types and models of automotive parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 It is a front view structural schematic diagram of an embodiment of the present invention;
[0035] Figure 2 A schematic diagram of the back structure of an embodiment of the present invention;
[0036] Figure 3 A schematic diagram of the drum structure of an embodiment of the present invention;
[0037] Figure 4 This is a schematic diagram of the internal structure of a drum according to an embodiment of the present invention;
[0038] Figure 5 A schematic diagram of the structure of a rotating wheel according to an embodiment of the present invention;
[0039] Figure 6 Schematic diagram of the rotating plate structure according to an embodiment of the present invention.
[0040] In the figure: 1. bracket plate; 2. driving shaft; 201. driving gear; 202. transmission gear; 3. driven gear; 4. roller; 401. cover plate; 402. bolt rod; 5. rotating plate; 501. rotating wheel; 502. positioning rod; 503. threaded cylinder; 504. threaded part; 505. positioning hole; 506. bearing sleeve; 6. adjusting screw cylinder; 601. internal thread ring; 602. threaded rod; 603. rotating cylinder; 7. rotating shaft; 8. inner lining cylinder; 801. adjusting groove; 802. end plate. DETAILED DESCRIPTION
[0041] In order to solve the problem that a large number of existing automobile parts are very likely to have large-area contact during roller plating, which in turn affects the galvanizing effect of automobile parts, the present invention provides a roller plating device for galvanizing automobile parts with adjustable inner diameter and a method of using the same. The technical scheme of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. Obviously, the invention described is only a part of the invention of the present invention, not the whole invention. Based on the invention in the present invention, all other inventions obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0042] See also Figure 1-6 The present invention provides a roller plating device for galvanizing automobile parts with adjustable inner diameter, comprising a support plate 1 for supporting, a roller 4 for loading automobile parts and then roller plating them is arranged on the inner side of the support plate 1, an inner lining tube 8 is arranged inside the roller 4, an adjusting component for adjusting the diameter of the inner lining tube 8 is arranged on one side of the inner lining tube 8, and a positioning component is connected to one side of the adjusting component;
[0043] The adjustment component is used to adjust the diameter of the inner liner tube 8, and then the adjusted diameter of the inner liner tube 8 is fixed by the positioning component.
[0044] Further, the adjustment assembly includes a rotating member and a fixing member, the fixing member is used to adjust the outer diameter of the inner liner 8, and the rotating member adjusts the outer periphery of the inner liner 8 to smoothness;
[0045] The rotating member includes a rotating shaft 7 arranged inside the drum 4, the rotating shaft 7 is arranged at the center of the inner liner 8, one side of the rotating shaft 7 is connected to a rotating plate 5, one side of the rotating plate 5 is provided with a rotating wheel 501, one side of the rotating wheel 501 is provided with a threaded barrel 503, a positioning rod 502 is inserted inside the threaded barrel 503, one side of the positioning rod 502 is provided with a threaded portion 504, and the threaded portion 504 and the threaded barrel 503 cooperate with each other;
[0046] The fixing member includes an adjusting screw barrel 6 disposed on one side of the outer circumference of the drum 4, a threaded rod 602 is disposed inside the adjusting screw barrel 6, a rotating barrel 603 is connected to the side of the threaded rod 602 away from the adjusting screw barrel 6, and the rotating barrel 603 is disposed on the outer side of the inner liner 8;
[0047] The outer circumference of the threaded rod 602 is screwed with an internal thread ring 601 , and the elongation of the threaded rod 602 is adjusted by rotating the internal thread ring 601 on the outside of the threaded rod 602 .
[0048] Furthermore, a plurality of positioning holes 505 are formed on one side of the rotating wheel 501 , and the plurality of positioning holes 505 are arranged around the center of the rotating wheel 501 .
[0049] Further, the plurality of positioning holes 505 cooperate with the threaded barrel 503 so that the positioning rod 502 is inserted into the positioning hole 505 through the threaded barrel 503 .
[0050] Further, a driving shaft 2 is provided on the upper part of the bracket plate 1, a driving gear 201 is connected to one side of the driving shaft 2, a transmission gear 202 is meshedly connected to one side of the driving gear 201, the transmission gear 202 cooperates with a driven gear 3, and the driven gear 3 is provided on one side of the drum 4;
[0051] The driving shaft 2 drives the driving gear 201 to rotate, and the drum 4 on one side of the driven gear 3 is rotated through the transmission gear 202, so that the automobile parts loaded inside the drum 4 are rolled.
[0052] Furthermore, an end plate 802 is provided at the rear end of the inner liner 8, and the shape of the end plate 802 is arc-shaped.
[0053] Furthermore, an adjustment groove 801 is opened on the outer circumference of the inner liner 8, and the end plate 802 rotates in an arc shape inside the adjustment groove 801 through an inner block.
[0054] Furthermore, a bearing sleeve 506 is provided in the middle of the rotating plate 5 for connecting the rotating wheel 501 to the rotating shaft 7 for rotation.
[0055] Furthermore, a cover plate 401 is disposed on one side of the drum 4 , and bolt rods 402 for pulling the cover plate 401 are disposed on both sides of the cover plate 401 .
[0056] A method for using a barrel plating device for galvanizing automobile parts with adjustable inner diameter, comprising the following steps:
[0057] Step (A), first, hold the bolt rod 402 with both hands, remove the cover plate 401 from the outer circumference of the drum 4, so that the drum 4 opens a gap, and then guide the automobile parts to be galvanized into the drum 4 through the gap where the cover plate 401 is removed, and then restore the cover plate 401 to the outer circumference of the drum 4, and close the drum 4;
[0058] Step (B), positively twisting the inner thread ring 601 located outside the drum 4, the inner thread ring 601 rotates on the outer circumference of the threaded rod 602 through the internal thread, thereby controlling the extension and retraction of the threaded rod 602, connecting the inner liner 8 to expand outward or roll inward, until the gap between the outer wall of the inner liner 8 and the inner wall of the drum 4 is large enough for two automobile parts to pass through at the same time;
[0059] Step (C), rotating the positioning rod 502 in the forward direction, driving the threaded portion 504 of the positioning rod 502 to rotate out of the positioning hole 505 through the threaded tube 503, and rotating the positioning rod 502 to drive the rotating wheel 501 to rotate;
[0060] Step (D), the rotating wheel 501 drives the rotating shaft 7 to rotate inside the drum 4 through the bearing sleeve 506, driving the inner liner 8 on the outer periphery of the rotating shaft 7 to rotate, and adjusting the diameter of the inner liner 8;
[0061] Step (D1), when the rotating wheel 501 rotates forward: the rotating shaft 7 connected to the inner liner 8 rotates forward, and the adjusting groove 801 of the inner liner 8 rotates to the right at the bottom of the end plate 802 through the inner block, so that the end plate 802 gradually fits to the outer periphery of the inner liner 8, and the outer diameter of the inner liner 8 becomes smaller;
[0062] Step (D2), when the rotating wheel 501 rotates in the reverse direction: the rotating shaft 7 is connected to the inner liner 8 and rotates in the reverse direction, and the adjusting groove 801 of the inner liner 8 rotates to the left at the lower part of the end plate 802 through the inner block, so that the end plate 802 gradually moves away from the outer periphery of the inner liner 8, and the outer diameter of the inner liner 8 becomes larger;
[0063] Step (D3), when fine-tuning the diameter of the inner liner 8: rotate the inner thread ring 601 forward or reversely to drive the threaded rod 602 to extend or retract, control the position of the outer periphery of the inner liner 8, and make the end plate 802 slide inside the adjustment groove 801 through the inner block to fine-tune the diameter of the inner liner 8.
[0064] Step (E), reversely twist the positioning rod 502, and rotate the threaded portion 504 inside the threaded tube 503, driving the positioning rod 502 to pass through the rotating wheel 501 and insert it into the positioning hole 505, completing the positioning of the rotating wheel 501, and fixing the diameter of the inner liner tube 8
[0065] The invention discloses a roller plating device for galvanizing automobile parts with adjustable inner diameter and a method for using the same, which has the following advantages:
[0066] The present invention adjusts the inner diameter of the drum 4 by means of external rotation by setting an adjustment component, and controls the distance between the drum 4 and the inner liner 8, so that the distance between the two can only meet the longitudinal passage of two automobile parts, ensuring that the cathode electrode head does not fit each other when electroplating the automobile parts, and avoids that multiple automobile parts are mutually bonded and connected to the cathode electrode head at the same time, thereby improving the electroplating effect of the automobile parts;
[0067] At the same time, when multiple automobile parts are guided into the drum 4, the automobile parts can be automatically arranged in the gap between the drum 4 and the inner liner 8, so that the automobile parts are attached to the inner wall of the drum 4, and in the process of the rotation of the drum 4, they roll down from the high position to the low position of the drum 4 in sequence, thereby completing the position exchange between the automobile parts and ensuring the galvanizing efficiency;
[0068] By adopting the external adjustment method, there is no need to disassemble the drum 4, the operation is convenient, and unnecessary manpower waste caused by disassembling the drum 4 is avoided;
[0069] The diameter of the inner lining tube 8 inside the drum 4 can be flexibly adjusted to meet the needs of roller plating of different types and models of automobile parts.
[0070] While the invention has been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made thereto without departing from the principles and spirit of the invention, the scope of the invention being defined by the appended claims and their equivalents.
Claims
1. A barrel plating device for galvanizing automobile parts with adjustable inner diameter, characterized in that: It comprises a support plate (1) for supporting, a roller (4) for loading automobile parts and then roller-plating them is arranged on the inner side of the support plate (1), an inner lining tube (8) is arranged inside the roller (4), an end plate (802) is arranged at the rear end of the inner lining tube (8), and the end plate (802) is in the shape of an arc; An adjustment groove (801) is provided on one side of the outer circumference of the inner liner (8), and the end plate (802) rotates in an arc shape inside the adjustment groove (801) via an inner block; An adjustment component for adjusting the diameter of the inner lining tube (8) is provided on one side of the inner lining tube (8), the adjustment component comprising a rotating part and a fixing part, the outer diameter of the inner lining tube (8) is adjusted by the fixing part, and then the rotating part adjusts the outer circumference of the inner lining tube (8) to smoothness; The rotating member comprises a rotating shaft (7) arranged inside the drum (4), the rotating shaft (7) being arranged at the center of the inner liner (8), and a rotating plate (5) being connected to one side of the rotating shaft (7); The fixing member comprises an adjusting screw barrel (6) arranged on one side of the outer circumference of the drum (4), a threaded rod (602) being arranged inside the adjusting screw barrel (6), a rotating barrel (603) being connected to a side of the threaded rod (602) away from the adjusting screw barrel (6), and the rotating barrel (603) being arranged on the outer side of the inner liner barrel (8); The outer circumference of the threaded rod (602) is screwed with an internal thread ring (601), and the elongation of the threaded rod (602) is adjusted by rotating the internal thread ring (601) on the outside of the threaded rod (602); One side of the adjustment component is connected to a positioning component, the positioning component comprises a rotating wheel (501) arranged on one side of the rotating plate (5), a threaded barrel (503) is arranged on one side of the rotating wheel (501), a positioning rod (502) is inserted into the interior of the threaded barrel (503), a threaded portion (504) is provided on one side of the positioning rod (502), and the threaded portion (504) and the threaded barrel (503) cooperate with each other; The adjustment component is used to adjust the diameter of the inner liner tube (8), and then the adjusted diameter of the inner liner tube (8) is fixed by the positioning component.
2. The inner diameter adjustable roller plating device for galvanizing automobile parts according to claim 1, characterized in that: A plurality of groups of positioning holes (505) are provided on one side of the rotating wheel (501), and the plurality of groups of positioning holes (505) are arranged around the center of the rotating wheel (501).
3. The inner diameter adjustable roller plating device for galvanizing automobile parts according to claim 2, characterized in that: The plurality of groups of positioning holes (505) cooperate with the threaded barrel (503) so that the positioning rod (502) is inserted into the positioning hole (505) through the threaded barrel (503).
4. The inner diameter adjustable roller plating device for galvanizing automobile parts according to claim 3, characterized in that: A driving shaft (2) is arranged on the upper part of the support plate (1); a driving gear (201) is connected to one side of the driving shaft (2); a transmission gear (202) is meshedly connected to one side of the driving gear (201); the transmission gear (202) cooperates with a driven gear (3); and the driven gear (3) is arranged on one side of the drum (4); The driving shaft (2) drives the driving gear (201) to rotate, and the roller (4) on one side of the driven gear (3) is rotated through the transmission gear (202), thereby rolling the automobile parts loaded inside the roller (4).
5. The inner diameter adjustable roller plating device for galvanizing automobile parts according to claim 4, characterized in that: A bearing sleeve (506) is provided in the middle of the rotating plate (5) for connecting the rotating wheel (501) to the rotating shaft (7) for rotation.
6. The inner diameter adjustable roller plating device for galvanizing automobile parts according to claim 5, characterized in that: A cover plate (401) is provided on one side of the drum (4), and bolt rods (402) for pulling the cover plate (401) are provided on both sides of the cover plate (401).
7. A method for using a barrel plating device for galvanizing automotive parts with adjustable inner diameter according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step A: First, hold the bolt rod (402) with both hands and remove the cover plate (401) from the outer peripheral surface of the drum (4), so that a gap is opened in the drum (4), and then the automobile parts to be galvanized are guided into the drum (4) through the gap where the cover plate (401) is removed, and then the cover plate (401) is restored to the outer peripheral surface of the drum (4), and the drum (4) is closed; Step B, positively twisting the inner thread ring (601) located outside the roller (4), so that the inner thread ring (601) rotates on the outer circumference of the threaded rod (602) through the internal thread, thereby controlling the extension and retraction of the threaded rod (602), connecting the inner liner (8) to expand outward or roll inward, until the gap between the outer wall of the inner liner (8) and the inner wall of the roller (4) is large enough for two automobile parts to pass through at the same time; Step C, rotating the positioning rod (502) forwardly, driving the threaded portion (504) of the positioning rod (502) to rotate out of the positioning hole (505) through the threaded tube (503), and rotating the positioning rod (502) to drive the rotating wheel (501) to rotate; Step D: The rotating wheel (501) drives the rotating shaft (7) to rotate inside the drum (4) through the bearing sleeve (506), thereby driving the inner lining tube (8) on the outer periphery of the rotating shaft (7) to rotate and adjusting the diameter of the inner lining tube (8); Step D1, when the rotating wheel (501) rotates forward: the rotating shaft (7) connected to the inner liner (8) rotates forward, and the adjusting groove (801) of the inner liner (8) rotates clockwise at the bottom of the end plate (802) through the inner block, so that the end plate (802) gradually fits to the outer periphery of the inner liner (8), and the outer diameter of the inner liner (8) becomes smaller; Step D2, when the rotating wheel (501) rotates in the reverse direction: the rotating shaft (7) connected to the inner liner (8) rotates in the reverse direction, and the adjusting groove (801) of the inner liner (8) rotates to the left at the bottom of the end plate (802) through the inner block, so that the end plate (802) gradually moves away from the outer periphery of the inner liner (8), thereby increasing the outer diameter of the inner liner (8); Step D3, when fine-tuning the diameter of the inner liner (8): the inner thread ring (601) is rotated forward or reversely to drive the threaded rod (602) to extend or retract, thereby controlling the position of the outer periphery of the inner liner (8), so that the end plate (802) slides inside the adjustment groove (801) through the inner block, thereby fine-tuning the diameter of the inner liner (8); Step E: Reversely twist the positioning rod (502) so that the threaded portion (504) rotates inside the threaded tube (503), driving the positioning rod (502) to be inserted into the positioning hole (505) through the rotating wheel (501), thereby completing the positioning of the rotating wheel (501) and fixing the diameter of the inner liner tube (8).
Citation Information
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