Height adjusting device for electroplating clamp

Abstract

The invention relates to an electroplating clamp height adjusting device. The device comprises a mounting plate used for loading an upper clamp; the locking mechanism is movably arranged on the mounting plate and has a locking state and an unlocking state; the gear is connected with the locking mechanism, the locking mechanism in the locking state can limit rotation of the gear, and the locking mechanism in the unlocking state can release the gear so that the gear can obtain the rotation freedom degree; the rack is arranged on the mounting plate in a lifting and moving manner, is meshed with the gear and is used for loading the lower clamp; the lifting driving mechanism is in transmission connection with the rack so as to drive the rack to ascend and descend. According to the scheme, the locking mechanism can quickly lock or release the gear, the height positions of the upper clamp and the lower clamp can be flexibly adjusted, and the clamping requirements of different circuit boards are met; meanwhile, the meshing reliability of the gear and the rack is high, the tooth skipping phenomenon is avoided, it is guaranteed that the upper clamp and the lower clamp stably clamp the circuit board, the rack is prevented from deforming, and the service life of the clamp mechanism is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electroplating production equipment, and particularly relates to an electroplating clamp height adjusting device. BACKGROUND

[0002] The electroplating equipment is a device for metal surface treatment, and is used for depositing metal or non-metal materials on the metal surface through an electrochemical method to achieve the effects of corrosion resistance, wear resistance, and aesthetics. For example, in the production of circuit boards, electroplating equipment is needed to electroplate the circuit boards. During the processing, the circuit boards are generally clamped and positioned by a clamp mechanism, and then the circuit boards are lowered into the electroplating solution of the electroplating tank for electroplating treatment. After the processing, the lifting mechanism lifts the circuit boards to leave the electroplating tank.

[0003] However, the sizes of different specifications and models of circuit boards are generally different, and the height and width will change, which requires the size of the clamp mechanism to be flexibly adjusted. However, the existing adjusting mechanism for the height change of the upper clamp and the lower clamp generally adopts the structure of a prismatic block and a rack or a jaw and a rack. After being adjusted to a specified position, there is a risk of tooth skipping, which affects the height adjustment accuracy of the upper clamp and the lower clamp, cannot effectively and stably clamp the circuit board, and easily causes the deformation of the rack, thereby reducing the service life of the clamp mechanism. SUMMARY

[0004] The present application aims to provide an electroplating clamp height adjusting device to solve the problem of tooth skipping risk in the prior art, which affects the service life of the clamp.

[0005] According to an aspect of the present application, an electroplating clamp height adjusting device is provided, which comprises: a mounting plate for loading an upper clamp; a locking mechanism movably arranged on the mounting plate, the locking mechanism having a locked state and an unlocked state; a gear connected with the locking mechanism, the locking mechanism in the locked state being capable of restricting the rotation of the gear, and the locking mechanism in the unlocked state being capable of releasing the gear so that the gear has a degree of freedom of rotation; a rack movably arranged on the mounting plate and engaged with the gear, the rack being used for loading a lower clamp; and a lifting driving mechanism in transmission connection with the rack to drive the rack to move up and down.

[0006] In one of the embodiments, the locking mechanism comprises a power unit, an elastic pressing unit and a pressing pad, the elastic pressing unit is movably arranged on the mounting plate, the gear is rotatably arranged on the elastic pressing unit, the pressing pad is connected with the elastic pressing unit and can press or release the gear, and the power unit is in driving connection with the elastic pressing unit to switch the locking mechanism between the locked state and the unlocked state.

[0007] In one of the embodiments, the elastic pressing unit comprises a support shaft, an elastic member and an end fixing member, the mounting plate is provided with a mounting through hole, the support shaft is slidably arranged in the mounting through hole, the gear is rotatably sleeved on the support shaft, the pressing pad is fixed on the support shaft and located on the side of the gear away from the mounting plate, the end fixing member is connected to the end of the support shaft away from the gear, and the elastic member is sleeved on the support shaft and abuts between the mounting plate and the end fixing member.

[0008] In one of the embodiments, the support shaft comprises a bolt, the elastic member comprises a spring, the end fixing member comprises a nut, and the pressing pad is arranged between the bolt head of the bolt and the gear, and the nut is screwed on one end of the bolt.

[0009] In one of the embodiments, the locking mechanism further comprises a plurality of rolling bodies, the inner ring wall of the gear is provided with a first annular raceway, and the plurality of rolling bodies are rotatably arranged between the first annular raceway and the outer peripheral wall of the support shaft. Alternatively, the locking mechanism further comprises a plurality of rolling bodies, the outer peripheral wall of the support shaft is provided with a second annular raceway, and the plurality of rolling bodies are rotatably arranged between the second annular raceway and the inner ring wall of the gear. The locking mechanism further comprises a plurality of rolling bodies, the inner ring wall of the gear is provided with a first annular raceway, the outer peripheral wall of the support shaft is provided with a second annular raceway, and the plurality of rolling bodies are rotatably arranged between the first annular raceway and the second annular raceway.

[0010] In one of the embodiments, the side surface of the gear towards the pressing pad is provided with a knurled structure, and the knurled structure is separably abutted with the pressing pad.

[0011] In one of the embodiments, the electroplating clamp height adjusting device further comprises a mounting seat, the mounting seat is arranged on the mounting plate, and the support shaft is rotatably arranged in the mounting seat.

[0012] In one of the embodiments, the electroplating clamp height adjusting device further comprises a guide seat, which is arranged on the mounting plate, and the guide seat is provided with a guide groove, and the rack is slidably arranged in the guide groove.

[0013] In one of the embodiments, the locking mechanism, the gear and the rack are arranged in two and one-to-one correspondence, and the two racks are used to connect the lower clamps.

[0014] In one of the embodiments, the electroplating clamp height adjusting device further comprises a connecting plate, one end of the connecting plate is connected with one of the racks, and the other end of the connecting plate is connected with the other rack.

[0015] The embodiment of the present application has the following beneficial effects: When the electroplating clamp height adjusting device is applied to clamp and mount a circuit board of a certain size for electroplating processing of the circuit board, the locking mechanism is in the locked state, so that the locking mechanism locks the gear, the gear cannot freely rotate and restricts the lifting movement of the rack through the meshing relationship, thereby ensuring that the lower clamp mounted on the rack and the upper clamp mounted on the mounting plate remain stable in structure and position, and ensuring that the circuit board is clamped stably and reliably. When another size of circuit board needs to be clamped and the height position of the upper clamp and the lower clamp needs to be adjusted, the locking mechanism is switched from the locked state to the unlocked state, at this time the locking mechanism releases the gear, the gear obtains the rotation freedom, then the lifting drive mechanism drives the rack to lift, the gear freely rotates under the driving of the rack, at the same time the lower clamp and the upper clamp are close to or away from each other to realize the height adjustment of the clamp mechanism, after the height position of the upper clamp and the lower clamp is adjusted, the locking mechanism is reset to the locked state to lock the gear again, the gear meshes with the rack again and restricts the movement freedom of the rack, ensuring that the upper clamp and the lower clamp stably clamp the circuit board. Compared with the prior art, on the one hand, by operating the locking mechanism to flexibly switch between the locked state and the unlocked state, the gear can be quickly locked or released, and the height position relationship of the upper clamp and the lower clamp can be quickly and effectively adjusted when facing circuit boards of different sizes, meeting different clamping needs and having good versatility. On the other hand, the locking mechanism well limits the accidental rotation of the gear in the locked state, ensuring that the gear and the rack stably and reliably mesh, the meshing reliability is high, the gear tooth skipping phenomenon is avoided, the upper clamp and the lower clamp can stably and effectively clamp the circuit board, and the service life of the clamp mechanism is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0017] Figure 1 A front view of the height adjusting device of the electroplating clamp according to an embodiment; Figure 2 A side view of the height adjusting device of the electroplating clamp according to an embodiment; Figure 1 Figure 3 A partial enlarged view of A in the height adjusting device of the electroplating clamp according to an embodiment; Figure 2 A side view of the gear according to an embodiment; Figure 4 A sectional view of B-B in the height adjusting device of the electroplating clamp according to an embodiment. Figure 5 Figure 4 Wherein:

[0018] 100, the height adjusting device of the electroplating clamp; 10, the mounting plate; 20, the locking mechanism; 21, the compression gasket; 22, the support shaft; 23, the elastic member; 24, the end fixing member; 30, the gear; 30a, the rolling body; 40, the rack; 50, the mounting seat; 60, the guide seat; 70, the connecting plate. DETAILED DESCRIPTION In order to make the present application more comprehensively understood, the following will make a more comprehensive description of the present application with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more comprehensive and thorough.

[0019] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0020] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0021] ​​In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one feature. In the description of the present application, if there are terms "a plurality of", the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0022] In the present application, unless otherwise expressly specified and limited, if there are terms "installation", "connection", "connection", "fixing" and the like, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In the present application, unless otherwise expressly specified and limited, if there are similar descriptions of the first feature "on" or "under" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0024] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of illustration, and do not represent the only implementation.

[0025] Please refer to Figures 1-2 The electroplating clamp height adjustment device 100 described in one embodiment includes a mounting plate 10, a locking mechanism 20, a gear 30, a rack 40, and a lifting drive mechanism.

[0026] The mounting plate 10 is used to mount the upper clamp. In addition, the mounting plate 10 is also used to mount the integrated locking mechanism 20, the gear 30, the rack 40 and the lifting driving mechanism. For example, the mounting plate 10 is a rectangular metal plate, which is mounted to the electroplating equipment body by screw connection.

[0027] The locking mechanism 20 is movably arranged on the mounting plate 10, and the locking mechanism 20 has a locked state and an unlocked state. The gear 30 is connected with the locking mechanism 20. When the locking mechanism 20 is in the locked state, the locking mechanism 20 can restrict the rotation of the gear 30. When the locking mechanism 20 is in the unlocked state, the locking mechanism 20 can release the gear 30, so that the gear 30 has the rotation freedom.

[0028] The rack 40 is movably arranged on the mounting plate 10, and the rack 40 is engaged with the gear 30. The rack 40 is used to mount the lower clamp. The lifting driving mechanism is drivingly connected with the rack 40, so as to drive the rack 40 to move up and down.

[0029] When the electroplating clamp height adjusting device 100 is applied to the clamping and mounting of a circuit board of a certain specification size, so as to carry out electroplating processing on the circuit board, the locking mechanism 20 is in the locked state, so that the locking mechanism 20 locks the gear 30, the gear 30 cannot freely rotate and restricts the lifting movement of the rack 40 through the engagement relationship, thereby ensuring that the lower clamp mounted on the rack 40 and the upper clamp mounted on the mounting plate 10 keep stable structure and position, and ensuring that the circuit board is clamped stably and reliably. When another specification size of circuit board needs to be clamped, and the height positions of the upper clamp and the lower clamp need to be adjusted, the locking mechanism 20 is switched from the locked state to the unlocked state. At this time, the locking mechanism 20 releases the gear 30, the gear 30 has the rotation freedom, and then the lifting driving mechanism drives the rack 40 to move up and down. The gear 30 is freely rotated under the driving of the rack 40, and the lower clamp and the upper clamp are close to or away from each other, so as to realize the height adjustment of the clamp mechanism. After the height positions of the upper clamp and the lower clamp are adjusted, the locking mechanism 20 is reset to the locked state, so as to lock the gear 30 again. The gear 30 is engaged with the rack 40 again and restricts the movement freedom of the rack 40, so as to ensure that the upper clamp and the lower clamp stably clamp the circuit board.

[0030] Compared with the prior art, on the one hand, the locking mechanism 20 can be switched between the locked state and the unlocked state, so that the gear 30 can be quickly locked or released, the height position relationship between the upper clamp and the lower clamp can be quickly and effectively adjusted when facing different specifications and sizes of circuit boards, different clamping needs can be met, and the universality is good; on the other hand, the locking mechanism 20 well limits the accidental rotation of the gear 30 in the locked state, ensures the stable and reliable meshing of the gear 30 and the rack 40, has high engagement reliability, avoids the occurrence of the tooth skipping phenomenon, can ensure that the upper clamp and the lower clamp stably and effectively clamp the circuit board, and avoids the deformation of the rack 40, thereby ensuring the service life of the clamp mechanism.

[0031] In one embodiment, the locking mechanism 20 includes a power unit, an elastic compression unit, and a compression pad 21. The elastic compression unit is movably arranged on the mounting plate 10, the gear 30 is rotatably arranged on the elastic compression unit, the compression pad 21 is connected with the elastic compression unit and can compress or release the gear 30, and the power unit is in transmission connection with the elastic compression unit to switch the locking mechanism 20 between the locked state and the unlocked state.

[0032] When the power mechanism works, the power mechanism provides driving force to enable the elastic compression unit to be flexibly switched between the locked state and the unlocked state. When the power mechanism does not work, the elastic compression unit remains in the locked state, so that the elastic force of the compression pad 21 is applied to compress the gear 30 on the mounting plate 10, the rotation freedom of the gear 30 is limited, the gear 30 limits the lifting movement of the rack 40 in a meshing manner, the structure of the upper clamp and the lower clamp is stable, the position is stable, and the circuit board is prevented from loosening or even falling off.

[0033] When the power mechanism applies driving force to the elastic compression unit, the driving force offsets at least part of the elastic force of the elastic compression unit acting on the compression pad 21, so that the compression pad 21 is separated from the gear 30, the gear 30 no longer receives the compression force and obtains the rotation freedom, at this time, the lifting drive mechanism can drive the rack 40 to lift and move, the gear 30 rotates synchronously with the lifting and movement of the rack 40 and does not interfere with the movement of the rack 40, so as to flexibly adjust the height position of the upper clamp and the lower clamp, and be suitable for clamping needs of circuit boards of various specifications and sizes.

[0034] Please refer to Figures 1 to 3In particular, in one of the embodiments, the elastic pressing unit comprises a support shaft 22, an elastic member 23 and an end fixing member 24. The mounting plate 10 is provided with a mounting through hole, the support shaft 22 is slidably arranged in the mounting through hole, the gear 30 is rotatably sleeved on the support shaft 22, the pressing pad 21 is fixedly arranged on the support shaft 22 and located at the side of the gear 30 away from the mounting plate 10, the end fixing member 24 is connected to the end of the support shaft 22 away from the gear 30, and the elastic member 23 is sleeved on the support shaft 22 and abuts between the mounting plate 10 and the end fixing member 24.

[0035] The support shaft 22 is arranged in the mounting through hole, so that the elastic pressing unit can be mounted on the mounting plate 10 as a whole. At this time, the axial ends of the support shaft 22 extend to the opposite sides of the thickness of the mounting plate 10, one of the extending ends provides a mounting carrier for the gear 30 and the pressing pad 21, and the other of the extending ends provides a mounting carrier for the elastic member 23. In the locked state, the power mechanism does not exert an axial driving force on the support shaft 22, and the elastic member 23 is in a natural stretched state, so that the support shaft 22 drives the pressing pad 21 to press against the wheel surface of the gear 30, thereby limiting the gear 30. When the power mechanism drives the support shaft 22 to move axially, so that the elastic pressing unit is switched to the unlocked state, the elastic member 23 is compressed into a compressed state, the support shaft 22 drives the pressing pad 21 to move away from the gear 30, thereby releasing the gear 30, and the gear 30 obtains a rotational freedom degree and does not interfere with the lifting movement of the rack 40.

[0036] More specifically, in one of the embodiments, the support shaft 22 comprises a bolt, the elastic member 23 comprises a spring, the end fixing member 24 comprises a nut, the pressing pad 21 is arranged between the bolt head of the bolt and the gear 30, and the nut is screwed on one end of the bolt. Therefore, the elastic pressing unit has a simple structure, the components are easy to obtain, the installation operation is convenient and labor-saving, and the implementability is strong.

[0037] Please refer to Figures 4 to 5 Further, in one of the embodiments, the locking mechanism 20 further comprises a plurality of rolling bodies 30a, the inner ring wall of the gear 30 is provided with a first annular raceway, and the plurality of rolling bodies 30a are rollingly arranged between the first annular raceway and the outer peripheral wall of the support shaft 22. Alternatively, the locking mechanism 20 further comprises a plurality of rolling bodies 30a, the outer peripheral wall of the support shaft 22 is provided with a second annular raceway, and the plurality of rolling bodies 30a are rollingly arranged between the second annular raceway and the inner ring wall of the gear 30. The locking mechanism 20 further comprises a plurality of rolling bodies 30a, the inner ring wall of the gear 30 is provided with a first annular raceway, the outer peripheral wall of the support shaft 22 is provided with a second annular raceway, and the plurality of rolling bodies 30a are rollingly arranged between the first annular raceway and the second annular raceway.

[0038] By arranging a plurality of rolling bodies 30a between the gear 30 and the support shaft 22, the contact area of the gear 30 and the support shaft 22 can be reduced, and the frictional resistance during relative rotation can be reduced, thereby greatly increasing the flexibility of rotation of the gear 30.

[0039] For example, the rolling bodies 30a can be balls, rollers, or the like, which can be selected as required.

[0040] In one embodiment, the gear 30 is provided with a knurled structure on the side facing the compression gasket 21, and the knurled structure is in separable abutment with the compression gasket 21. When the compression gasket 21 is in tight contact with the gear 30, the knurled structure can effectively increase the friction between the gear 30 and the compression gasket 21, thereby enhancing the compression and restraint capability of the compression gasket 21 on the gear 30, preventing accidental rotation of the gear 30 and tooth skipping, and protecting the rack 40 from impact force to avoid deformation and damage.

[0041] For example, the knurled structure can be an array of protruding structures, a corrugated structure, or the like, which can be selected as required.

[0042] Please refer to Figures 1 to 3 Further, in one embodiment, the electroplating clamp height adjusting device 100 further comprises a mounting seat 50 arranged on the mounting plate 10, and the support shaft 22 is rotatably arranged in the mounting seat 50. The mounting seat 50 is a rectangular block with a certain thickness, and the support shaft 22 is arranged in the mounting plate 10 and the mounting seat 50 at the same time, thereby increasing the contact area of the support shaft 22 with the mounting plate 10 and the mounting seat 50, which helps to improve the uniformity of the stress on the support shaft 22 and the stability of the movement, prevent the support shaft 22 from being skewed due to uneven axial stress, and cause the locking mechanism 20 to be unable to flexibly switch between the locked state and the unlocked state, thereby affecting the reliability of the electroplating clamp height adjusting device 100.

[0043] For example, the mounting seat 50 can be an integral structure with the mounting plate 10 or can be detachably assembled. When a detachable assembly structure is adopted, the connection between the mounting seat 50 and the mounting plate 10 can be one of threaded connection, buckle connection, or the like, which can be selected as required.

[0044] Further, in order to improve the stability of the lifting movement of the rack 40 and avoid the rack 40 from being skewed to cause the meshing teeth of the rack 40 and the gear 30 to be subjected to excessive stress and even be deformed or broken, in one embodiment, the electroplating clamp height adjusting device 100 further comprises a guide seat 60 arranged on the mounting plate 10, and the guide seat 60 is provided with a guide groove, and the rack 40 is slidably arranged in the guide groove.

[0045] In one of the embodiments, the locking mechanism 20, the gear 30 and the rack 40 are provided with two sets of one-to-one assembly, and the two racks 40 are used to connect the lower clamp. The two sets of locking mechanism 20, gear 30 and rack 40 are used to install the lower clamp at the same time, which can improve the structural strength of the lower clamp installation, ensure the stability of the lower clamp structure and the reliability of the work, and strengthen the stability of the lower clamp clamping the circuit board.

[0046] Please refer to Figure 1 In one of the embodiments, the electroplating clamp height adjusting device 100 further comprises a connecting plate 70, one end of the connecting plate 70 is connected with one of the racks 40, and the other end of the connecting plate 70 is connected with the other rack 40. The connecting plate 70 is provided to ensure the synchronization of the lifting movement of the two racks 40, thereby avoiding the action force caused by the asynchronous movement of the two racks 40 to the lower clamp, which can cause the lower clamp to be skewed or deformed, affect the service life of the clamp mechanism and the stability of the clamping of the circuit board.

[0047] For example, the electroplating clamp height adjusting device 100 of the present application can be applied to VCP electroplating equipment. Among them, VCP (Vertical Conveyor Plating) electroplating equipment is the abbreviation of vertical continuous electroplating equipment, which is mainly used for PCB (printed circuit board) electroplating process, and realizes efficient and stable copper layer plating through continuous conveying. When working, it can complete the electroplating process continuously by vertically conveying the substrate. Compared with horizontal electroplating equipment (such as HCP), VCP electroplating equipment can significantly reduce bubble residues and improve plating uniformity by gravity-assisted solution flow. For example, in the production of PCB (printed circuit board), VCP can ensure that the copper thickness difference of the inner wall of the through hole is less than 10% (industry standard IPC-6012B).

[0048] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A height adjustment device for an electroplating fixture, characterized in that, include: Mounting plate, the mounting plate being used to mount the upper clamp; A locking mechanism is movably disposed on the mounting plate, and the locking mechanism has a locked state and an unlocked state; A gear is connected to a locking mechanism. When locked, the locking mechanism restricts the rotation of the gear. When unlocked, the locking mechanism releases the gear, allowing it to gain rotational freedom. A rack, which is movably and vertically mounted on the mounting plate and meshes with the gear, is used to load the lower clamp; as well as A lifting drive mechanism is provided, which is connected to the rack and pinion drive to drive the rack to move up and down.

2. The electroplating fixture height adjustment device according to claim 1, characterized in that, The locking mechanism includes a power unit, an elastic pressing unit, and a pressing pad. The elastic pressing unit is movably disposed on the mounting plate. The gear is rotatably disposed on the elastic pressing unit. The pressing pad is connected to the elastic pressing unit and can press or release the gear. The power unit is drivenly connected to the elastic pressing unit to switch the locking mechanism between a locked state and an unlocked state.

3. The electroplating fixture height adjustment device according to claim 2, characterized in that, The elastic clamping unit includes a support shaft, an elastic element, and an end fixing element. The mounting plate has a mounting through hole, the support shaft is slidably inserted into the mounting through hole, the gear is rotatably sleeved on the support shaft, the clamping pad is fixed to the support shaft and located on the side of the gear away from the mounting plate, the end fixing element is connected to the end of the support shaft away from the gear, and the elastic element is sleeved on the support shaft and abuts against the mounting plate and the end fixing element.

4. The electroplating fixture height adjustment device according to claim 3, characterized in that, The support shaft includes a bolt, the elastic element includes a spring, the end fixing element includes a nut, the clamping washer is arranged between the bolt head of the bolt and the gear, and the nut is screwed to one end of the bolt.

5. The electroplating fixture height adjustment device according to claim 3, characterized in that, The locking mechanism further includes a plurality of rolling elements, and the inner ring wall of the gear is provided with a first annular raceway. The plurality of rolling elements are rotatably disposed between the first annular raceway and the outer peripheral wall of the support shaft. Alternatively, the locking mechanism may further include a plurality of rolling elements, wherein the outer peripheral wall of the support shaft is provided with a second annular raceway, and the plurality of rolling elements are rotatably disposed between the second annular raceway and the inner ring wall of the gear; The locking mechanism further includes multiple rolling elements. The inner ring wall of the gear has a first annular raceway, and the outer peripheral wall of the support shaft has a second annular raceway. The multiple rolling elements are rotatably disposed between the first annular raceway and the second annular raceway.

6. The electroplating fixture height adjustment device according to claim 2, characterized in that, The gear has a knurled structure on the side facing the clamping pad, and the knurled structure can be detachably abutted against the clamping pad.

7. The electroplating fixture height adjustment device according to claim 3, characterized in that, The electroplating fixture height adjustment device also includes a mounting base, which is disposed on the mounting plate, and the support shaft is rotatably inserted through the mounting base.

8. The electroplating fixture height adjustment device according to claim 1, characterized in that, The electroplating fixture height adjustment device also includes a guide seat, which is disposed on the mounting plate and has a guide groove, through which the rack can be slidably inserted.

9. The electroplating fixture height adjustment device according to claim 1, characterized in that, The locking mechanism, the gear, and the rack are all provided in pairs and assembled in a one-to-one correspondence. Both racks are used to connect to the lower clamp.

10. The electroplating fixture height adjustment device according to claim 9, characterized in that, The electroplating fixture height adjustment device further includes a connecting plate, one end of which is connected to one of the racks, and the other end of which is connected to the other rack.

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