Electroplating clamp for rapidly clamping piston rod

Abstract

The electroplating clamp is characterized in that the electroplating clamp comprises a supporting sleeve, arc-shaped pressing blocks, a clamping sleeve and a pushing mechanism, the two arc-shaped pressing blocks are symmetrically arranged at the front end of the supporting sleeve in the radial direction of the supporting sleeve, and the two arc-shaped pressing blocks can only move up and down in the radial direction of the supporting sleeve; the clamping sleeve is arranged on the supporting sleeve in a sleeving mode, in the forward moving process of the clamping sleeve, the front end of the clamping sleeve can synchronously push the two arc-shaped pressing blocks to be close to each other, an arc-shaped protruding block is arranged on the inner side of the front end of the inner side wall of each arc-shaped pressing block, and the arc-shaped protruding blocks can be clamped in a threaded tool withdrawal groove in the threaded end of a piston rod. The pushing mechanism is used for applying forward pushing force to the clamping sleeve all the time. The electroplating clamp is convenient to clamp and operate, and the phenomena of sparking and falling off can be effectively prevented in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to piston rod electroplating technical field, concretely is a kind of electroplating fixture of piston rod quick clamping. BACKGROUND

[0002] In the processing of hydraulic piston rod, to improve the wear resistance, corrosion resistance and service life of piston rod, electroplating process is generally used to form a hard metal plating layer on the surface of piston rod.

[0003] At present, when electroplating piston rod, the connecting tool for connecting the threaded end of piston rod is generally connected with the threaded end of piston rod by threaded connection. After long-term repeated use, the threads are worn, which leads to loose connection between the connecting tool and the threaded end of piston rod, and thus the phenomenon of sparking and burning the piston rod occurs during electroplating, affecting the quality of the piston rod. Moreover, when the threads of the connecting tool are severely worn, the piston rod may fall off during electroplating, reducing the safety of electroplating of the piston rod. Furthermore, for some large-sized piston rods, the connecting tool used is also large in size, which requires the cooperation of two workers to connect the connecting tool and the piston rod, resulting in high labor cost. SUMMARY

[0004] The utility model aims at providing a kind of electroplating fixture of piston rod quick clamping, the electroplating fixture clamping operation is convenient, and the effective stable adhesion of the thread of the threaded end of piston rod can be effectively realized under the extrusion of arc-shaped pressure block in clamping sleeve, so that the problem of sparking can be effectively prevented, and simultaneously, the clamping of piston rod can be effectively realized by arc-shaped protruding block, which can effectively prevent the occurrence of piston rod falling off phenomenon during electroplating.

[0005] The utility model solves the technical scheme adopted for its technical problem: a kind of electroplating fixture of piston rod quick clamping, including support sleeve, arc-shaped pressure block, clamping sleeve, push mechanism, two the arc-shaped pressure block is symmetrically set in the front end of the support sleeve along the radial direction of the support sleeve, and two arc-shaped pressure blocks can only move up and down along the radial direction of support sleeve, the clamping sleeve is placed on the support sleeve, during the forward movement of the clamping sleeve, the front end of the clamping sleeve can realize synchronous push two the arc-shaped pressure block and mutually close, an arc-shaped protruding block is arranged in the inner side wall front end of the arc-shaped pressure block, the arc-shaped protruding block can be clamped in the thread relief groove of the threaded end of piston rod, the push mechanism is used to always apply a forward thrust to the clamping sleeve.

[0006] Preferably, a circular baffle is fixed at the rear part of the support sleeve, and an electroplating hanging plate is fixedly arranged at the rear part of the circular baffle.

[0007] Further, a hanging through hole is arranged in the middle of the electroplating hanging plate.

[0008] Further, the pushing mechanism is a spring, the spring is sleeved on the supporting sleeve, and the spring is clamped between the clamping sleeve and the circular baffle.

[0009] Further, the inner end face of the arc-shaped pressing block can be matched with the external thread on the threaded end of the piston rod, the longitudinal section of the arc-shaped pressing block is in the shape of a right-angled trapezoid, and two guide clamping mouths for clamping the corresponding arc-shaped pressing blocks are symmetrically arranged at the front end of the supporting sleeve.

[0010] Further, an axial shoulder is arranged at the front end of the supporting sleeve and located at the rear side of the guide clamping mouth, the rear end of the arc-shaped pressing block is matched with the end face of the axial shoulder, and an arc-shaped limiting plate is arranged at the upper part of each of the left and right sides of the arc-shaped pressing block.

[0011] Further, a conical surface matched with the outer side arc-shaped inclined surface of the arc-shaped pressing block is arranged at the inner side of the front end of the clamping sleeve.

[0012] Further, a T-shaped groove is arranged on the rear end face of the arc-shaped pressing block and sleeved on the T-shaped guide rail arranged on the front end face of the axial shoulder.

[0013] The piston rod is clamped by using a pulling, inserting and loosening operation mode, so that the clamping operation efficiency can be greatly improved, and the operation mode can be easily and smoothly completed by one worker, and the labor cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] 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 are only some preferred embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0016] Figure 2 It is a schematic diagram of the structure of the arc-shaped pressing block distributed on the support sleeve.

[0017] Figure 3 It is a schematic diagram of the structure of the clamping sleeve.

[0018] Figure 4 It is a longitudinal sectional view of the present application.

[0019] Figure 5 It is Figure 1 It is an enlarged view of A in the middle.

[0020] Figure 6 It is Figure 2 It is an enlarged view of B in the middle.

[0021] In the figure: 1 support sleeve, 11 shaft shoulder, 12 T-shaped guide rail, 2 arc-shaped pressing block, 21 arc-shaped protruding block, 22 arc-shaped limiting plate, 23 arc-shaped inner end face, 24 arc-shaped inclined surface, 25 T-shaped groove, 3 clamping sleeve, 31 conical surface, 4 spring, 5 circular baffle, 6 hanging plate, 61 electroplated hanging plate. DETAILED DESCRIPTION

[0022] The following will be combined with specific embodiments and drawings to further describe the present application. Figures 1-6 The technical solutions in the embodiments of the present application are described clearly and completely, obviously, the described embodiments are only some preferred embodiments of the present application, not all embodiments. Those skilled in the art can make similar modifications without departing from the connotation of the present application, therefore, the present application is not limited by the specific embodiments disclosed below.

[0023] The present application provides a kind of electroplating clamp (such as Figure 1As shown, the device comprises a support sleeve 1, an arc-shaped pressing block 2, a clamping sleeve 3, a pushing mechanism. In practical application, the support sleeve 1 is used to be sleeved outside the threaded end of the piston rod, and the inner diameter of the support sleeve 1 can be designed according to the outer diameter of the threaded end of the corresponding piston rod, so as to ensure that the threaded end can be smoothly sleeved into the support sleeve 1, and at the same time, the gap between the support sleeve 1 and the threaded end should not be too large; two arc-shaped pressing blocks 2 are symmetrically arranged at the front end of the support sleeve 1 along the radial direction of the support sleeve 1, and the two arc-shaped pressing blocks 2 can only move up and down along the radial direction of the support sleeve 1. By using the up-and-down movement of the two arc-shaped pressing blocks 2, it can effectively avoid that the arc-shaped pressing block 2 blocks the threaded end of the piston rod from being inserted into the support sleeve 1 when the piston rod is sleeved, and at the same time, after the threaded end of the piston rod is inserted into the support sleeve 1, the inner end surface 23 of the arc-shaped pressing block 2 can be effectively matched with the thread of the threaded end by moving the arc-shaped pressing block 2. The effective matching of the arc-shaped pressing block 2 and the thread can effectively prevent the occurrence of the sparking phenomenon in the electroplating process. The clamping sleeve 3 is sleeved on the support sleeve 1, and during the forward movement of the clamping sleeve 3, the front end of the clamping sleeve 3 can realize synchronous pushing of the two arc-shaped pressing blocks 2 to move close to each other. The two arc-shaped pressing blocks 2 move close to each other under the pushing and extrusion of the clamping sleeve 3, so as to realize the stable and effective clamping of the two arc-shaped pressing blocks 2 to the threaded end of the piston rod. An arc-shaped protrusion 21 is arranged on the inner side wall of the arc-shaped pressing block 2. When the clamping sleeve 3 continuously extrudes the two arc-shaped pressing blocks 2, the two arc-shaped protrusions 21 are continuously clamped in the thread relief groove. When the piston rod is vertically lifted by using the clamp, the clamping of the arc-shaped protrusion 21 to the thread of the upper part of the thread relief groove, the radial limiting of the clamping sleeve to the arc-shaped pressing block 2, and the effect that the arc-shaped pressing block 2 cannot move axially relative to the support sleeve 1 can prevent the threaded end of the piston rod from falling off from the support sleeve 1, thereby improving the electroplating safety of the piston rod. The pushing mechanism is used to always apply a forward pushing force to the clamping sleeve 1. By using the pushing force of the pushing mechanism to the clamping sleeve 3, the clamping sleeve 3 always keeps extruding the two arc-shaped pressing blocks 2 in the radial direction, so as to continuously and effectively clamp the threaded end of the piston rod by the two arc-shaped pressing blocks 2.

[0024] On the basis of the above-mentioned embodiment, in order to facilitate the vertical stable suspension of the piston rod by using the clamp, a circular baffle 5 is fixed at the rear of the support sleeve 1, the circular baffle 5 is fixedly connected with the support sleeve 1 by welding, an electroplating hanging plate 6 is fixedly arranged at the rear of the circular baffle 5, the electroplating hanging plate 6 is fixedly connected with the circular baffle 5 by welding, and further, a hanging through hole 61 is arranged in the middle of the electroplating hanging plate 6, the clamp is hung on the copper plate above the electroplating tank by using the hanging through hole 61.

[0025] On the basis of the above-mentioned embodiment, the specific implementation of the pushing mechanism is that the pushing mechanism is a spring 4, the spring 4 is sleeved on the support sleeve 1, and the spring 4 is clamped between the clamping sleeve 3 and the circular baffle 5, when the clamping of the threaded end of the piston rod is needed, the clamping sleeve 3 is pulled backward, so that the two arc-shaped pressing blocks 2 can move outwardly, thereby facilitating the insertion of the threaded end of the piston rod into the support sleeve 1, after the insertion of the threaded end of the piston rod is completed, the clamping sleeve 3 is released, at this time, the clamping sleeve 3 moves forward under the pushing of the spring 4, thereby realizing the radial extrusion of the two arc-shaped pressing blocks 2 again, so that the two arc-shaped pressing blocks 2 can effectively clamp the threaded end of the piston rod.

[0026] On the basis of the above-mentioned embodiment, the specific implementation of the arc-shaped pressing block 2 is that the arc-shaped inner end surface 23 of the arc-shaped pressing block 2 can be in close contact with the external thread on the threaded end of the piston rod, specifically, the diameter of the arc-shaped inner end surface 23 can be equal to the outer diameter of the external thread, so that the full-range effective close contact of the arc-shaped inner end surface 23 with the external thread can be effectively ensured, the longitudinal section of the arc-shaped pressing block 2 is in the shape of a right-angle trapezoid, in actual application, the radial extrusion of the arc-shaped pressing block 2 can be realized by using the pushing action of the inner edge of the front end of the clamping sleeve 3 on the arc-shaped inclined surface of the arc-shaped pressing block 2, then the two arc-shaped pressing blocks 2 can tightly hold the piston rod, at the same time, the radial positioning of the two arc-shaped pressing blocks 2 by the clamping sleeve 3 makes the arc-shaped pressing block 2 unable to move along the radial direction of the piston rod, two guide sockets for clamping the corresponding arc-shaped pressing blocks 2 are symmetrically arranged at the front end of the supporting sleeve 1, under the guidance and positioning of the guide sockets, the arc-shaped pressing block 2 can smoothly move up and down but cannot rotate in a circle, in order to improve the installation stability of the arc-shaped pressing block 2 at the front end of the supporting sleeve 1, here, a shaft shoulder 11 located at the rear side of the guide socket is arranged at the front end of the supporting sleeve 1, the rear end of the arc-shaped pressing block 2 is in close contact with the end surface of the shaft shoulder 11, an arc-shaped limiting plate 22 is arranged on the left and right sides of the upper part of the arc-shaped pressing block 2, the limiting action of the supporting sleeve 1 on the arc-shaped limiting plate 22 effectively prevents the arc-shaped pressing block 2 from falling into the supporting sleeve 1, thereby improving the convenience of the clamp, at the same time, in order to effectively prevent the arc-shaped pressing block 2 from falling off when moving away from the central axis of the supporting sleeve 1, here, when the clamping sleeve 3 is pushed back to the limit position, the front end of the clamping sleeve 3 is still sleeved on the outer side of the two arc-shaped pressing blocks 2, thereby effectively preventing the arc-shaped pressing block 2 from moving outward and falling off.

[0027] In order to realize the effective close contact of the front end of the clamping sleeve 3 with the arc-shaped inclined surface 24 on the outer side of the arc-shaped pressing block 2, here, a conical surface 31 matched with the arc-shaped inclined surface 24 on the outer side of the arc-shaped pressing block 2 is arranged at the inner side of the front end of the clamping sleeve 3, in order to ensure that the conical surface 31 can always effectively extrude the arc-shaped inclined surface 24, here, the diameter of the outer arc-shaped edge at the front end of the arc-shaped inclined surface 24 is greater than the diameter of the circular edge at the front end of the conical surface 31.

[0028] On the basis of the above-mentioned embodiment, the specific implementation that the arc-shaped pressing block 2 cannot move forward and backward relative to the supporting sleeve 1 is that a T-shaped groove 25 is arranged on the rear end surface of the arc-shaped pressing block 2, the T-shaped groove 25 is sleeved on the T-shaped guide rail 12 arranged on the front end surface of the shaft shoulder 11, after the T-shaped guide rail 12 is sleeved in the T-shaped groove 25, the forward and backward movement of the arc-shaped pressing block 2 can be limited, at the same time, the stable connection of the arc-shaped pressing block 2 with the supporting sleeve 1 can be realized, so that the arc-shaped pressing block 2 cannot be separated from the supporting sleeve 1, thereby improving the clamping reliability of the piston rod when the piston rod is vertically lifted by using the clamp.

[0029] In the utility model, "upper", "lower", "front", "rear", "left", "right" are relative positions for the convenience of describing position relation, therefore cannot be understood as absolute position for the limitation of the protection scope.

[0030] In addition to the technical features described in the specification, they are known to the skilled in the art.

[0031] The preferred embodiments and examples of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments and examples, and for ordinary skilled in the art, on the premise of not departing from the utility model concept, a number of improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A plunger rod quick clamping electroplating fixture, characterized in that, Including support sleeve, arc-shaped pressing block, clamping sleeve, push mechanism, two said arc-shaped pressing blocks are symmetrically arranged in the radial direction of the support sleeve at the front end of the support sleeve, and the two arc-shaped pressing blocks can only move up and down along the radial direction of the support sleeve, the clamping sleeve is sleeved on the support sleeve, during the forward movement of the clamping sleeve, the front end of the clamping sleeve can realize synchronous pushing of two said arc-shaped pressing blocks to approach each other, an arc-shaped protrusion is arranged on the inner side wall of the front end of the arc-shaped pressing block, the arc-shaped protrusion can be clamped in the thread retreat groove of the threaded end of the piston rod, and the push mechanism is used to always apply a forward pushing force to the clamping sleeve.

2. A plating fixture for quick clamping of a piston rod according to claim 1, characterized in that A circular baffle is fixed at the rear of the support sleeve, and an electroplating hanging plate is fixed and arranged at the rear of the circular baffle.

3. A plating fixture for quick clamping of a piston rod according to claim 2, characterized in that A hanging through hole is arranged in the middle of the electroplating hanging plate.

4. A plating fixture for quick clamping of a piston rod according to claim 3, characterized in that The push mechanism is a spring, the spring is sleeved on the support sleeve, and the spring is clamped between the clamping sleeve and the circular baffle.

5. A plating fixture for quick clamping of a piston rod according to claim 4, characterized in that The arc-shaped inner end surface of the arc-shaped pressing block can be attached to the outer thread on the threaded end of the piston rod, the longitudinal section of the arc-shaped pressing block is in the shape of a right-angled trapezoid, two guide clamps for clamping corresponding arc-shaped pressing blocks are symmetrically arranged at the front end of the support sleeve.

6. A plating fixture for quick clamping of a piston rod according to claim 5, characterized in that A shaft shoulder is arranged at the front end of the support sleeve on the rear side of the guide clamp, the rear end of the arc-shaped pressing block is attached to the end surface of the shaft shoulder, and an arc-shaped limiting plate is arranged on the upper part of the left and right sides of the arc-shaped pressing block.

7. A plating fixture for quick clamping of a piston rod according to claim 6, characterized in that A conical surface is arranged on the inner side of the front end of the clamping sleeve and matches the outer side arc-shaped inclined surface of the arc-shaped pressing block.

8. A plating fixture for quick clamping of a piston rod according to claim 7, characterized in that A T-shaped groove is arranged on the rear end surface of the arc-shaped pressing block, and the T-shaped groove is sleeved on the T-shaped guide rail arranged on the front end surface of the shaft shoulder.

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