Part clamping device for chromium plating

Abstract

The utility model discloses a part clamping device for chromium plating, which comprises a conductive support component, a mounting component and an adjusting component, and one end of the conductive support component is connected with a conductive rod; the mounting assembly comprises a material placing part and material pressing parts, the material placing part is connected with the conductive supporting assembly and is provided with a plurality of material placing areas used for placing the bottom ends of the parts, the material pressing parts are arranged above the material placing part in parallel, and material pressing parts are arranged at the positions, corresponding to the material placing areas, of the material pressing parts; the two ends of the adjusting assembly are connected with the discharging piece and the pressing piece correspondingly, and the adjusting assembly is used for driving the pressing piece to move relative to the discharging piece so that the pressing part can press the top end of the part. The device can vertically clamp and fix a round cap head at one end of a pin part and a flat end face at the other end of the pin part, effectively solves the problems of chromatic aberration of the appearance of a chromium layer, low production efficiency and the like during chromium plating of the pin part, can increase the surface wear resistance of the pin part, and prolongs the service life of the pin part.

Description

Technical Field

[0001] This utility model relates to the field of chrome plating technology for pin-type parts, and specifically to a part clamping device for chrome plating. Background Technology

[0002] A pin, also known as a fastener, is a common fastener. Through its specific shape and size, it achieves precise positioning and a secure connection between objects. It is widely used in modern machinery industries for applications requiring precise connections, ensuring the stability and positional accuracy of components. Pins often undergo chrome plating to increase surface wear resistance and extend their service life. Chrome plating is a metal surface treatment and protection method. The chromium layer is very stable in the atmosphere, maintaining its luster for a long time, and possesses high hardness, good wear resistance, and heat resistance. Because the chrome plating process has low current efficiency and high current density, to obtain a qualified plating layer, good contact must be maintained between the product and the fixture, and the fixture must ensure sufficient conductive cross-section to guarantee good conductivity.

[0003] Because pin-type parts are cylindrical and have no threaded structure on their surface, there is no position on the surface for clamping and conducting electricity. Initially, copper wire is used to bind the cylindrical surface of the pin for clamping and conduction. After chrome plating for a period of time, the binding area of ​​the copper wire is moved after removal from the groove, and chrome plating is repeated to ensure the binding area has a chrome layer. For example, CN112725868A discloses a method for clamping and chrome plating small, thin-skinned parts, which includes the following steps: 1) machining a chrome plating clamping device; 2) suspending the chrome plating clamping device on the workbench railing and stacking several parts to be processed on the workbench; 3) fixing several parts to the chrome plating clamping device using clamping or support methods; 4) immersing the parts fixed to the chrome plating clamping device in an electroplating solution for chrome plating; 5) after electroplating, removing the parts and restoring the steel pipe to its natural state. The chrome plating clamping device is a steel pipe, specifically a hollow steel pipe made of spring steel, which has a certain degree of elasticity, facilitating the clamping and support of the parts.

[0004] Current technology has some shortcomings. For example, when using a chrome plating clamping device for fixation, the clamping position of the workpiece may not be in contact with the plating solution, which will affect the quality of the plating layer. If the clamping position is moved during the process for secondary chrome plating, the chrome layer color at the binding area will inevitably be inconsistent with other areas, resulting in color difference and affecting the appearance quality. In addition, each part needs to be clamped and fixed individually with a steel pipe, leading to low production efficiency. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a chrome-plated parts clamping device to solve the technical problems of color difference in the appearance of chrome layer, poor plating quality, and low production efficiency when chrome-plating pin-type parts.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a clamping device for chrome-plated parts, including: a conductive support assembly, a mounting assembly, and an adjusting assembly. One end of the conductive support assembly is connected to a conductive rod. The mounting assembly includes a feeding component and a pressing component. The feeding component is connected to the conductive support assembly and has several feeding areas for placing the bottom of the parts. The pressing components are arranged side by side above the feeding components, and each feeding area has a pressing part. The two ends of the adjusting assembly are connected to the feeding component and the pressing component, respectively, and are used to drive the pressing component to move relative to the feeding component so that the pressing part presses against the top of the part.

[0008] In some embodiments, the conductive support assembly is provided in two sets, which are respectively installed on both sides of the mounting assembly.

[0009] In some embodiments, each group of conductive support components includes a conductive hook and a connecting rod. The conductive hook is used to hang on the conductive rod, and one end of the connecting rod is connected to the conductive hook, while the other end is connected to the mounting component.

[0010] In some embodiments, the feeding component includes a base plate, which is fixedly connected to the conductive support assembly. A plurality of placement grooves are sequentially formed on the top surface of the base plate along its length. The cross-sectional area of ​​the placement grooves is larger than the cross-sectional area of ​​the bottom end of the part, and is used to place one end of the part.

[0011] In some embodiments, the two ends of the placement groove penetrate the top and bottom surfaces of the base plate, respectively, and a limiting piece is provided on its inner wall. When one end of the part is placed in the placement groove, the limiting piece can abut against the bottom of the part.

[0012] In some embodiments, a plurality of limiting pieces are uniformly arranged along the inner circumference of the inner sidewall of the placement groove, and the gap between the plurality of limiting pieces is smaller than the cross-sectional area of ​​the bottom end of the part.

[0013] In some embodiments, three limiting pieces are provided, and the limiting pieces are arranged at intervals.

[0014] In some embodiments, the pressing component includes a pressure plate, which is arranged side by side above the base plate and is slidably connected to the conductive support assembly, and can slide up and down along the conductive support assembly.

[0015] In some embodiments, the pressing part of the pressing component includes an adjusting screw. The pressing plate is provided with threaded grooves at positions corresponding to each of the feeding areas. Each of the threaded grooves is threaded with the adjusting screw, which is used to press the top of the part.

[0016] In some embodiments, the adjusting assembly includes a fixing bolt, one end of which is rotatably connected to the feeding member and the other end of which is threadedly connected to the pressing member, so as to drive the pressing member to move relative to the feeding member by rotation.

[0017] Compared with the prior art, the chrome plating parts clamping device provided by this utility model, by setting a conductive support component, a mounting component and an adjustment component, connects the conductive rods through the conductive support component to achieve the conductive function. By setting a feeding area on the feeding component, it can ensure that the bottom end of the part is accurately placed on the feeding component. At the same time, a pressure component is configured above the feeding component. Under the drive of the drive component, the pressure component can move relative to the feeding component, so that the pressure part of the pressure component can accurately press the top end of the part, thereby realizing the vertical clamping and fixing of a batch of parts.

[0018] This solution addresses situations where the chromium plating quality of the round cap and the flat end face of pin-type parts is not critical. It designs a chromium plating clamping device to hold and fix the round cap at one end and the flat end face at the other, ensuring sufficient conductive cross-section for adequate conductivity. Furthermore, the clamping area of ​​this chromium plating device is not located on the cylindrical chromium plating surface, thus guaranteeing the appearance quality of the chromium plating layer. This solution effectively solves problems such as color difference and low production efficiency in chromium plating of pin-type parts, increases surface wear resistance, and extends service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall main view cross-sectional structure of the chrome-plating parts clamping device provided in this embodiment of the utility model;

[0020] Figure 2 This is a side view of the chrome plating part clamping device provided in this embodiment of the utility model;

[0021] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0022] Figure 4 This is a top view of the base plate of the chrome-plating parts clamping device provided in this embodiment of the utility model;

[0023] Figure 5This is a partial cross-sectional view of the base plate of the chrome-plated parts clamping device provided in this embodiment of the utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Conductive support assembly; 11. Connecting rod; 12. Conductive hook;

[0026] 2. Installation components; 21. Base plate; 211. Placement slot; 212. Limiting plate; 22. Pressure plate; 23. Adjusting screw;

[0027] 3. Adjustment components; 31. Fixing bolts;

[0028] 4. Pin; 5. Conductive rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] To address the technical problems of color difference, poor plating quality, and low production efficiency in chrome plating of pin-type parts, this utility model provides a chrome plating part clamping device. Specifically designed for situations where the chrome plating quality of the round cap and the flat end face of the pin-type part is not critical, this clamping device secures the round cap at one end and the flat end face at the other end of the pin-type part from both above and below. This ensures the device has a sufficient conductive cross-section to guarantee adequate conductivity. Furthermore, the clamping area of ​​this chrome plating device is not located on the cylindrical chrome plating surface, thus ensuring the appearance quality of the chrome plating layer. This solution effectively solves the problems of color difference and low production efficiency in chrome plating of pin-type parts, increases surface wear resistance, and extends service life.

[0031] It should be noted that the chrome-plated parts clamping device described in this utility model is used for, but not limited to, pin-type parts. For ease of explanation, this utility model only uses the application of the chrome-plated parts clamping device to pin-type parts as an example for explanation. The principle of the chrome-plated parts clamping device applied to other types of parts is essentially the same as that applied to pin-type parts, and will not be described in detail here.

[0032] Please see Figure 1 and Figure 2The chrome-plating part clamping device includes: a conductive support assembly 1, a mounting assembly 2, and an adjusting assembly 3. One end of the conductive support assembly 1 is connected to a conductive rod 5. The mounting assembly 2 includes a feeding component and a pressing component. The feeding component is connected to the conductive support assembly 1 and has several feeding areas for placing the bottom of the part. The pressing components are arranged side by side above the feeding components, and each feeding area has a pressing part. The two ends of the adjusting assembly 3 are connected to the feeding component and the pressing component, respectively. The adjusting assembly 3 is used to drive the pressing component to move relative to the feeding component so that the pressing part presses against the top of the part.

[0033] In this device, conductive rods 5 are connected by conductive support assembly 1 to achieve conductive function. By setting a feeding area on the feeding component, it can be ensured that the bottom end of the part is accurately placed on the feeding component. At the same time, a pressing component is arranged above the feeding component. Under the drive of the drive assembly, the pressing component can move relative to the feeding component, so that the pressing part of the pressing component can accurately press the top end of the part, thereby achieving the upper and lower clamping and fixing of the part, ensuring that the device has a sufficient conductive cross section. Meanwhile, its clamping part is not on the cylindrical chrome-plated surface, thereby ensuring the appearance quality of the chrome layer.

[0034] Please see Figure 1 and Figure 2 In order to ensure the stability of the mounting component 2 when clamping the pin 4, in this embodiment, two sets of conductive support components 1 are used, and the two sets of conductive support components 1 are respectively installed on both sides of the mounting component 2.

[0035] Specifically, each set of conductive support components 1 includes a conductive hook 12 and a connecting rod 11. The conductive hook 12 is designed to hang on the conductive rod 5, while the two connecting rods 11 are located on both sides of the mounting component 2. The top end of the connecting rod 11 is connected to the conductive hook 12, and the bottom end is connected to the mounting component 2. The conductive hook 12 and the connecting rod 11 are firmly connected by welding.

[0036] Please see Figure 1 , Figures 3 to 5In this embodiment, the feeding component includes a base plate 21, and the pressing component includes a pressing plate 22. Specifically, the top surface of the base plate 21 has a plurality of placement grooves 211 arranged sequentially along its length. The cross-sectional area of ​​these placement grooves 211 is larger than the cross-sectional area of ​​the bottom end of the part, and is designed specifically for placing one end of the part. The pressing plate 22 is located side by side above the base plate 21, and its two ends are slidably connected to two connecting rods 11. The two connecting rods 11 pass through the holes at both ends of the pressing plate 22 and the holes at both ends of the base plate 21, respectively, and are fixed to the base plate 21 by welding, ensuring the stability of the structure. The pressing plate 22 can slide freely up and down on the conductive support assembly 1. By adjusting the up and down movement, the distance between the base plate 21 and the pressing plate 22 can be adjusted to accommodate pin parts of different lengths. During execution, by adjusting the assembly to drive the pressing plate 22 to slide upward, multiple pins 4 can be released in batches, thereby facilitating the removal of the processed pins 4.

[0037] Since the pin-type parts are designed with a round cap head and a flat surface at both ends, in order to ensure the stability of the pin 4 when it is installed on the base plate 21, the round cap head of the pin 4 should be placed on the base plate 21 during use, while the flat surface at its top is firmly fixed by the pressure plate 22.

[0038] Please see Figures 3 to 5 In one embodiment, the two ends of the placement groove 211 penetrate the top and bottom surfaces of the base plate 21, respectively, and a limiting piece 212 is provided on its inner wall. When one end of the pin part is placed into the placement groove 211, the limiting piece 212 can effectively abut against the bottom of the pin part. The limiting piece 212 can be designed as a ring, or multiple pieces can be configured. If multiple limiting pieces 212 are used, their shape is not limited, and they are evenly distributed around the inner sidewall of the placement groove 211. The gap reserved between multiple limiting pieces 212 should be smaller than the cross-sectional area of ​​the bottom end of the part to ensure that the bottom end of the pin 4 can be stably placed on the base plate 21.

[0039] Preferably, in this embodiment, please refer to Figure 4 The limiting piece 212 is provided in three parts, and the limiting pieces 212 are arranged at intervals. The intervals between the limiting pieces 212 facilitate the flow of chromium plating solution.

[0040] It should be noted that, in other possible embodiments, the bottom end of the placement groove 211 is designed not to penetrate the bottom of the base plate 21, and a tiny hole is provided at the bottom of the placement groove 211 to facilitate the flow of chromium plating solution.

[0041] To ensure the stable fastening of the pin 4, in this embodiment, the pressing part of the pressing component includes adjusting screws 23. Threaded grooves are provided on the pressure plate 22 at positions corresponding to each feeding zone. Each threaded groove is fitted with an adjusting screw 23 via a threaded connection. These adjusting screws 23 are used to press the top of the part. Multiple adjusting screws 23 can be rotated and adjusted individually, enabling precise pressing of pin parts of different sizes and shapes, ensuring their stability during use. The use of adjusting screws 23 also allows the user to adjust the clamping force according to actual needs, thus adapting to parts of different materials and thicknesses.

[0042] To adjust the height of the pressure plate 22, in this embodiment, the adjustment assembly 3 includes a fixing bolt 31. One end of the fixing bolt 31 is rotatably connected to the base plate 21, while the other end is threadedly connected to the pressure plate 22. By rotating the bolt, the pressure plate 22 can be moved relative to the base plate 21, thereby adjusting the height of the pressure plate 22.

[0043] The adjustment assembly 3 also includes a locking nut, which engages with the external thread of the fixing bolt 31 to lock the adjusted position of the pressure plate 22. In actual operation, the user first rotates the fixing bolt 31 to adjust the pressure plate 22 to the desired height, and then tightens the locking nut to fix the pressure plate 22 and prevent it from shifting during use. This design not only simplifies the adjustment process but also improves the accuracy of adjustment and the convenience of operation.

[0044] Working principle: During implementation, the conductive hook 12 is attached to the conductive rod 5. The pressure plate 22 is adjusted to a suitable position using the fixing bolt 31 and then fixed. The round cap of the pin 4 to be chrome-plated is then placed into the placement groove 211 on the base plate 21. The adjusting screw 23 is screwed into the threaded hole on the pressure plate 22 until it contacts the flat end face of the pin 4 and is tightened, thereby fixing the pin 4. The conductive rod 5 is a cathode conductive rod 5 installed on the chrome plating tank and connected to the negative terminal of the chrome plating power supply. The device is placed in the chrome plating solution and the conductive hook 12 is attached to the conductive rod 5. Then, the corresponding anode is placed in the solution and the power is turned on to complete the chrome plating process.

[0045] This utility model achieves conductivity by setting up a conductive support component 1, an installation component 2, and an adjustment component 3. The conductive support component 1 connects the conductive rods 5 to achieve conductivity. By setting a feeding area on the feeding component, it can be ensured that the bottom end of the part is accurately placed on the feeding component. At the same time, a pressing component is configured above the feeding component. Under the drive of the drive component, the pressing component can move relative to the feeding component, so that the pressing part of the pressing component can accurately press the top end of the part, thereby realizing the vertical clamping and fixing of a batch of parts.

[0046] This solution addresses situations where the chromium plating quality of the round cap and the flat end face of pin-type parts is not critical. It designs a chromium plating clamping device to hold and fix the round cap at one end and the flat end face at the other, ensuring sufficient conductive cross-section for adequate conductivity. Furthermore, the clamping area of ​​this chromium plating device is not located on the cylindrical chromium plating surface, thus guaranteeing the appearance quality of the chromium plating layer. This solution effectively solves problems such as color difference and low production efficiency in chromium plating of pin-type parts, increases surface wear resistance, and extends service life.

[0047] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0048] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A clamping device for chrome plating parts, characterized in that, include: A conductive support assembly, one end of which is connected to a conductive rod; The mounting assembly includes a feeding component and a pressing component. The feeding component is connected to the conductive support assembly and has several feeding areas for placing the bottom ends of parts. The pressing components are arranged side-by-side above the feeding components, and each feeding area has a pressing part corresponding to a pressing part. An adjusting component is provided, with its two ends connected to the feeding component and the pressing component, respectively. The adjusting component is used to drive the pressing component to move relative to the feeding component so that the pressing part presses against the top of the part.

2. The chrome-plating part clamping device according to claim 1, characterized in that, Two sets of conductive support components are provided, which are respectively installed on both sides of the mounting component.

3. The chrome-plating part clamping device according to claim 2, characterized in that, Each set of conductive support components includes a conductive hook and a connecting rod. The conductive hook is used to hang on the conductive rod, and one end of the connecting rod is connected to the conductive hook, while the other end is connected to the mounting component.

4. The chrome-plating part clamping device according to claim 1, characterized in that, The feeding component includes a base plate, which is fixedly connected to the conductive support assembly. Several placement slots are sequentially formed on the top surface of the base plate along its length. The cross-sectional area of ​​the placement slots is larger than the cross-sectional area of ​​the bottom end of the part, and is used to place one end of the part.

5. The chrome-plating part clamping device according to claim 4, characterized in that, The two ends of the placement groove pass through the top and bottom surfaces of the base plate, respectively. A limiting piece is provided on its inner wall. When one end of the part is placed in the placement groove, the limiting piece can abut against the bottom of the part.

6. The chrome-plating part clamping device according to claim 5, characterized in that, The inner sidewall of the placement groove is uniformly provided with a plurality of limiting pieces along its inner circumference, and the gap between the plurality of limiting pieces is smaller than the cross-sectional area of ​​the bottom end of the part.

7. The chrome-plating part clamping device according to claim 6, characterized in that, The limiting piece is provided in three parts, and the limiting pieces are arranged at intervals.

8. The chrome-plating part clamping device according to claim 7, characterized in that, The pressing component includes a pressure plate, which is arranged side by side above the base plate and is slidably connected to the conductive support assembly, and can slide up and down along the conductive support assembly.

9. The chrome-plating part clamping device according to claim 8, characterized in that, The pressing part of the pressing component includes an adjusting screw. The pressing plate is provided with threaded grooves at positions corresponding to each of the feeding areas. Each of the threaded grooves is threaded with the adjusting screw, which is used to press the top of the part.

10. The chrome-plating part clamping device according to claim 1, characterized in that, The adjusting assembly includes a fixing bolt, one end of which is rotatably connected to the feeding component and the other end is threadedly connected to the pressing component, so as to drive the pressing component to move relative to the feeding component by rotation.

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