A special fixture for surface treatment of inverter copper parts

Abstract

The application relates to a special clamp for surface treatment of an inverter copper piece, which comprises a base, a clamping unit, a flexible contact layer, a positioning pin assembly and a support adjusting mechanism. The clamping unit increases the contact area through adjustable clamping arms and the flexible contact layer, the positioning pin assembly reduces the impact force by using a spring buffer device, and the support adjusting mechanism provides uniform support through telescopic support rods. The application can effectively solve the problems of insufficient clamping area, uneven clamping force and insufficient support capacity of the existing clamp, avoid deformation or surface damage of the copper piece, ensure the uniformity of the surface treatment layer, simultaneously adopt a chemical corrosion resistant material, adapt to copper pieces of various shapes and sizes, and improve the applicability and treatment quality.

Description

Technical Field

[0001] This utility model belongs to the field of surface treatment and fixture technology, specifically a special fixture for surface treatment of copper parts of inverters. Background Technology

[0002] In this field, surface treatment processes for inverter copper components have gradually become a crucial aspect in improving product performance and lifespan. Currently, copper component surface treatment commonly employs methods such as chemical plating, electroplating, or anodizing. In practical applications, these methods require the use of fixtures to fix the copper components in place to ensure the stability and uniformity of the treatment process. However, existing fixture designs are mostly general-purpose and cannot fully adapt to the specific shape and size requirements of inverter copper components.

[0003] In existing fixtures, the structural design of the clamping parts often suffers from insufficient contact area, which can lead to loosening or displacement of the copper parts during processing. This not only affects the uniformity of surface treatment but may also result in poor local processing effects or even damage to the copper parts' surface. Furthermore, the material selection of some fixtures is inappropriate, potentially causing reactions with chemical reagents during processing, thereby affecting the surface quality of the copper parts.

[0004] For example, some clamps use simple bolt fixing to hold copper components. The bolt contact points are small and unevenly distributed, which can easily apply excessive local pressure to the copper components during clamping, leading to deformation or surface damage. Furthermore, this clamping method is cumbersome to operate, increasing the time cost of manual adjustments, and may result in inconsistent clamping force due to human error. These problems are particularly prominent for complex-shaped inverter copper components.

[0005] Some traditional fixtures also have a second type of defect. For example, when processing large, thin copper parts, the fixture's support structure design is not perfect enough, and it cannot effectively prevent the copper parts from bending or vibrating in the processing liquid due to buoyancy or liquid flow. This may result in uneven thickness of the surface treatment layer on the copper parts, or even untreated areas, thus affecting the performance and reliability of the final product. Utility Model Content

[0006] This utility model relates to a special fixture for surface treatment of inverter copper parts, and more particularly to a fixture for fixing inverter copper parts with complex shapes and various sizes. In existing fixture designs, the structural design of the clamping parts suffers from insufficient contact area, leading to loosening or displacement of the copper parts during surface treatment. Furthermore, the fixture material may react with chemical reagents, affecting the surface quality of the copper parts. For example, some fixtures use bolt fixing for clamping, resulting in small and unevenly distributed contact points, which can easily apply excessive local pressure to the copper parts, causing deformation or surface damage. Simultaneously, the support structure design of traditional fixtures is inadequate, failing to effectively prevent bending and vibration caused by buoyancy or liquid flow when processing large-area, thin copper parts, thus affecting the uniformity of the surface treatment layer.

[0007] The purpose of this utility model is to provide a special fixture for surface treatment of copper parts of inverters. By improving the structural design of the clamping part, optimizing the selection of clamping materials, and enhancing the stability of the support structure, the defects of existing fixtures such as insufficient clamping area, uneven clamping force, and insufficient support capacity are solved.

[0008] This utility model provides a special fixture for surface treatment of copper components in inverters, comprising: a base, a clamping unit, a flexible contact layer, a positioning pin assembly, and a support adjustment mechanism. The base serves as the main support of the entire device, and has multiple mounting slots for fixing the clamping unit and the support adjustment mechanism. The clamping unit includes at least two adjustable clamping arms, one end of which is hinged to a mounting slot on the base, and the other end has a flexible contact layer. The flexible contact layer is made of a chemically resistant elastic material, used to directly contact the surface of the copper component and increase the contact area. The positioning pin assembly is located in the central area of ​​the base, and its top end has a spring buffer device for initial positioning of the copper component and reducing impact during clamping. The support adjustment mechanism includes multiple telescopic support rods, one end of which is threaded to a mounting hole in the lower part of the base, and the other end has an arc-shaped support head for providing uniform support for large-area, thin copper components.

[0009] The clamping unit's clamping arm is hinged to a mounting slot on the base, allowing the clamping arm to rotate around the hinge axis to accommodate copper parts of different sizes. The end of the clamping arm has a sliding groove with embedded ball bearings. The ball bearings are fixed to the back of the flexible contact layer with adhesive, ensuring that the flexible contact layer can adjust the contact angle according to the shape of the copper part's surface. This design not only increases the clamping area but also reduces pressure concentration on the copper part's surface during clamping.

[0010] The flexible contact layer has a thickness of 2mm to 5mm and is made of polytetrafluoroethylene (PTFE) or silicone, which has excellent chemical corrosion resistance and elasticity. The surface of the flexible contact layer is microporous, forming a dense protrusion structure to further increase the contact area and improve friction, thereby preventing the copper parts from sliding in the treatment solution.

[0011] The spring buffer device of the positioning pin assembly includes a compression spring and a guide sleeve. The guide sleeve is fixed in the central area of ​​the base, and the compression spring is sleeved inside the guide sleeve, with one end contacting the bottom of the base and the other end contacting the bottom end of the positioning pin. When the copper part is placed on the fixture, the positioning pin moves downward under the gravity of the copper part, and the compression spring is compressed, thereby applying an upward reaction force to the copper part, which plays a role in buffering and positioning.

[0012] The telescopic support rod of the adjustable support mechanism is made of stainless steel, with graduated markings on its outer surface for precise control of the rod's extension length. The arc-shaped support head of the support rod is made of rubber with anti-slip textures to enhance contact stability with the copper component. The number of support rods is determined by the size and shape of the copper component, typically ranging from 4 to 8, evenly distributed in the lower mounting holes of the base.

[0013] The mounting groove of the base is equipped with a locking device for fixing the rotation angle of the clamping arm. The locking device includes a threaded handle and a locking block that mates with the handle. One end of the locking block is embedded in the mounting groove, and the other end is connected to the handle via threads. When it is necessary to adjust the angle of the clamping arm, rotating the handle loosens the locking block. After adjustment, tightening the handle again will fix the clamping arm in the desired position.

[0014] This utility model also provides an operating method for a special fixture for surface treatment of copper parts in inverters. First, the copper part is placed on the base and initially positioned using a positioning pin assembly. Then, the angle of the clamping arm of the clamping unit is adjusted to align it with the edge of the copper part, and the position of the clamping arm is fixed by a locking device. Next, the extension length of the support rod of the support adjustment mechanism is adjusted according to the size and shape of the copper part, so that the arc-shaped support head is in close contact with the lower surface of the copper part. Finally, it is checked whether the flexible contact layer evenly covers the clamping area of ​​the copper part. After confirming that everything is correct, surface treatment can begin.

[0015] This invention significantly increases the clamping area through the design of a flexible contact layer, avoiding the instability caused by small contact points in traditional clamps. Simultaneously, the spring buffer device in the positioning pin assembly effectively reduces impact forces during clamping, lowering the risk of damage to the copper component surface. The introduction of a support adjustment mechanism solves the bending and vibration problems of large-area, thin copper components in the treatment liquid caused by buoyancy or liquid flow, ensuring the uniformity of the surface treatment layer.

[0016] Furthermore, the clamping material of this invention is rationally selected; both the flexible contact layer and the arc-shaped support head are made of chemically resistant materials, avoiding the possibility of the clamp reacting with chemical reagents, thus ensuring the quality of the copper parts' surface treatment. The flexible design of the adjustable clamping arms and support adjustment mechanism of the clamping unit allows the clamp to adapt to inverter copper parts of different shapes and sizes, exhibiting wide applicability.

[0017] In summary, this utility model solves the defects of existing clamps, such as insufficient clamping area, uneven clamping force, and insufficient support capacity, by improving the structural design of the clamping part, optimizing the selection of clamping materials, and enhancing the stability of the support structure, thus providing reliable technical support for the surface treatment of inverter copper parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a magnified view of a portion of the clamping unit.

[0020] Figure 3 This is a cross-sectional view of the locating pin assembly.

[0021] Figure 4 Side view supporting the adjustment mechanism.

[0022] Figure 5 Partial sectional view of the base mounting slot locking device.

[0023] The attached figures are labeled as follows:

[0024] 1. Base; 2. Clamping unit; 3. Flexible contact layer; 4. Positioning pin assembly; 5. Support adjustment mechanism; 6. Clamping arm; 7. Hinge; 8. Ball bearing; 9. Spring buffer device; 10. Telescopic support rod; 11. Arc-shaped support head; 12. Locking device; 13. Handle; 14. Locking block. Detailed Implementation

[0025] This utility model relates to a special fixture for surface treatment of copper parts in inverters, the overall structure of which is as follows: Figure 1 As shown, it includes a base 1, a clamping unit 2, a flexible contact layer 3, a positioning pin assembly 4, and a support and adjustment mechanism 5. The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] The base 1, serving as the main load-bearing structure of the entire fixture, is made of rectangular steel plate and has multiple mounting slots for fixing the clamping unit 2 and supporting the adjustment mechanism 5. The mounting slots are evenly distributed along the edge of the base 1, and the number is determined according to actual needs, typically 4 to 8. A locking device 12 is installed within each mounting slot. The locking device 12 includes a handle 13 and a locking block 14. One end of the locking block 14 is embedded in the mounting slot, and the other end is connected to the handle 13 via a thread. When the angle of the clamping unit 2 needs to be adjusted, rotating the handle 13 releases the locking block 14. After adjustment, tightening the handle 13 again fixes the clamping unit 2 in the desired position. This design ensures the adjustability of the clamping unit 2's angle while guaranteeing stability after fixing.

[0027] The clamping unit 2 consists of at least two adjustable clamping arms 6. One end of each clamping arm 6 is connected to a mounting groove on the base 1 via a hinge 7, and the other end is provided with a flexible contact layer 3. The axis of the hinge 7 is perpendicular to the plane of the base 1, allowing the clamping arm 6 to rotate freely around the axis of the hinge 7 to accommodate copper parts of different sizes. The end of the clamping arm 6 is provided with a sliding groove, in which ball bearings 8 are embedded. The ball bearings 8 are fixedly connected to the back of the flexible contact layer 3 with adhesive. The design of the ball bearings 8 allows the flexible contact layer 3 to adjust the contact angle according to the shape of the copper part's surface, thereby achieving a better fit. The flexible contact layer 3 has a thickness of 2mm to 5mm and is made of polytetrafluoroethylene (PTFE) or silicone, which has excellent chemical corrosion resistance and elasticity. The surface of the flexible contact layer 3 is microporous, forming a dense protrusion structure, which further increases the contact area and improves friction, preventing the copper part from sliding in the processing liquid.

[0028] The locating pin assembly 4 is located in the central area of ​​the base 1, and its top is equipped with a spring buffer device 9. For example... Figure 3 As shown, the spring buffer device 9 includes a compression spring and a guide sleeve. The guide sleeve is fixed in the central area of ​​the base 1, and the compression spring is sleeved inside the guide sleeve, with one end contacting the bottom of the base 1 and the other end contacting the bottom end of the positioning pin. When the copper part is placed on the fixture, the positioning pin moves downward under the weight of the copper part, compressing the compression spring and thus applying an upward reaction force to the copper part, providing buffering and initial positioning. This design reduces the impact force on the copper part during placement and lowers the risk of surface damage.

[0029] The support adjustment mechanism 5 includes multiple telescopic support rods 10, one end of which is threaded to the lower mounting hole of the base 1, and the other end is provided with an arc-shaped support head 11. For example... Figure 4As shown, the outer surface of the support rod 10 is marked with graduations for precise control of its extension length. The number of support rods 10 is determined by the size and shape of the copper part, typically set to 4 to 8, evenly distributed in the lower mounting holes of the base 1. The arc-shaped support head 11 is made of rubber material with anti-slip texture on its surface, enhancing contact stability with the copper part. The design of the support rod 10 solves the problem of bending and vibration of large-area thin copper parts in the treatment liquid due to buoyancy or liquid flow, ensuring the uniformity of the surface treatment layer.

[0030] During use, the copper part is first placed on the base 1 and initially positioned using the positioning pin assembly 4. Next, the angle of the clamping arm 6 of the clamping unit 2 is adjusted to align with the edge of the copper part, and the position of the clamping arm 6 is fixed using the locking device 12. Then, the extension length of the support rod 10 of the support adjustment mechanism 5 is adjusted according to the size and shape of the copper part, ensuring that the arc-shaped support head 11 is in close contact with the lower surface of the copper part. Finally, it is checked whether the flexible contact layer 3 evenly covers the clamping area of ​​the copper part; once confirmed to be correct, the surface treatment operation can begin.

[0031] The clamping arm 6 of the clamping unit 2 is connected to the mounting groove on the base 1 via a hinge 7. The rotation angle of the clamping arm 6 can be adjusted and fixed by the locking device 12. The flexible contact layer 3 is connected to the sliding groove of the clamping arm 6 via a ball bearing 8, ensuring that it can flexibly adjust the contact angle according to the change of the surface shape of the copper part. The spring buffer device 9 of the positioning pin assembly 4 works in cooperation with the compression spring and the guide sleeve to apply buffering force to the copper part and reduce impact. The support rod 10 of the support adjustment mechanism 5 is connected to the base 1 via a thread. Its extension length can be precisely controlled by the scale markings. The arc-shaped support head 11 enhances the contact stability with the copper part through rubber material and anti-slip texture.

[0032] The above details the connection, positional, and cooperative relationships between the various components of this utility model, ensuring the stability and reliability of the fixture during the surface treatment process of the inverter's copper parts. To better enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the fixture's operating principle and implementation steps is provided in conjunction with a specific application scenario.

[0033] In practical use, the inverter copper component to be processed is first placed on base 1. The operator must ensure that the center of the copper component is aligned with the positioning pin assembly 4, and then slowly lower the copper component. At this time, the spring buffer device 9 in the positioning pin assembly 4 begins to function, compressing the spring and applying an upward reaction force to the copper component. This design, through the limiting effect of the guide sleeve, ensures that the spring compression process is smooth and uniform, thereby effectively reducing the impact force when placing the copper component and avoiding surface damage caused by hard contact. The initial positioning function of the positioning pin assembly 4 allows the copper component to remain basically stable on base 1, providing a basis for subsequent clamping and support adjustment.

[0034] Next, the operator adjusts the angle of the clamping arm 6 of the clamping unit 2. By rotating the handle 13 in the locking device 12, the locking block 14 is released, allowing the clamping arm 6 to rotate freely around the hinge 7. The hinge 7 is designed so that its axis is perpendicular to the plane of the base 1, ensuring that the clamping arm 6 can flexibly adapt to the edges of copper parts of different sizes and shapes. After adjustment, the handle 13 is tightened again to fix the position of the clamping arm 6. During this process, the flexible contact layer 3 adjusts its contact angle in real time through the connection structure between the ball bearing 8 and the sliding groove at the end of the clamping arm 6 to conform to the shape changes of the copper part surface. The microporous surface of the flexible contact layer 3 increases friction, while its material properties (such as polytetrafluoroethylene or silicone) ensure chemical corrosion resistance and elasticity, thereby preventing the copper part from sliding or local pressure concentration in the treatment liquid.

[0035] Subsequently, the operator adjusts the support adjustment mechanism 5 according to the specific size and shape of the copper part. By rotating the telescopic support rod 10, its extension length is precisely controlled to the required value, and the scale markings facilitate quick reading and adjustment by the operator. The arc-shaped support head 11 is made of rubber material, and its anti-slip texture enhances the contact stability with the lower surface of the copper part. The number and distribution of the support rods 10 are determined according to the area and thickness of the copper part, and are usually set to 4 to 8 rods, evenly distributed in the lower mounting holes of the base 1. When the arc-shaped support head 11 is in close contact with the lower surface of the copper part, the support adjustment mechanism 5 can effectively counteract the buoyancy and liquid flow in the treatment fluid on the large-area thin copper part, preventing the copper part from bending or vibrating, thereby ensuring the uniformity of the surface treatment layer.

[0036] Finally, the operator needs to check whether the flexible contact layer 3 evenly covers the clamping area of ​​the copper part and confirm that all components are in place. The thickness of the flexible contact layer 3 ranges from 2mm to 5mm, and its elastic properties can automatically compensate for minor unevenness on the surface of the copper part during clamping, further improving the stability of clamping. At the same time, the chemical corrosion resistance of the flexible contact layer 3 ensures that it will not react with chemical reagents in the processing solution, thereby protecting the quality of the copper part surface.

[0037] Through the above steps, the fixture achieves comprehensive fixation and support for the inverter's copper components. The adjustable clamping arm 6 and flexible contact layer 3 of the clamping unit 2 jointly solve the problem of clamping instability caused by insufficient contact area in traditional fixtures; the spring buffer device 9 of the positioning pin assembly 4 reduces the impact force when placing the copper components, lowering the risk of surface damage; the support adjustment mechanism 5, through the design of the telescopic support rod 10 and the arc-shaped support head 11, effectively addresses the bending and vibration problems that may occur in large-area thin copper components in the treatment liquid. The coordinated cooperation between the components ensures the stability and reliability of the fixture during the surface treatment process of the inverter's copper components.

[0038] In summary, through reasonable structural design and material selection, this utility model achieves efficient clamping and stable support for complex-shaped and multi-sized copper parts in specific application scenarios, significantly improving the uniformity and quality of surface treatment.

Claims

1. A special fixture for surface treatment of copper parts in inverters, comprising: Base (1); The clamping unit (2) includes at least two adjustable clamping arms (6), one end of each clamping arm (6) is connected to the mounting groove on the base (1) via a hinge (7), and the other end is provided with a flexible contact layer (3); The flexible contact layer (3) is made of a chemically resistant elastic material with a thickness of 2 to 5 millimeters and a surface treated with microporous material to form a dense protrusion structure. The positioning pin assembly (4) is located in the central area of ​​the base (1), and a spring buffer device (9) is provided at its top. The spring buffer device (9) includes a compression spring and a guide sleeve. The support adjustment mechanism (5) includes multiple telescopic support rods (10), one end of which is threaded to the lower mounting hole of the base (1), and the other end is provided with an arc-shaped support head (11).

2. The special fixture for surface treatment of inverter copper parts as described in claim 1, characterized in that: The base (1) is provided with multiple mounting slots, and a locking device (12) is provided in the mounting slot. The locking device (12) includes a handle (13) and a locking block (14). One end of the locking block (14) is embedded in the mounting slot, and the other end is connected to the handle (13) by a thread.

3. The special fixture for surface treatment of inverter copper parts as described in claim 1, characterized in that: The end of the clamping arm (6) is provided with a sliding groove, in which a ball (8) is embedded. The ball (8) is fixedly connected to the back of the flexible contact layer (3) by an adhesive.

4. The special fixture for surface treatment of inverter copper parts as described in claim 1, characterized in that: The flexible contact layer (3) is made of polytetrafluoroethylene or silicone.

5. The special fixture for surface treatment of inverter copper parts as described in claim 1, characterized in that: The guide sleeve of the spring buffer device (9) is fixed in the central area of ​​the base (1), and the compression spring is sleeved inside the guide sleeve. One end of the spring contacts the bottom of the base (1), and the other end contacts the bottom end of the positioning pin.

6. The special fixture for surface treatment of inverter copper parts as described in claim 1, characterized in that: The outer surface of the retractable support rod (10) is marked with scale marks, and the arc-shaped support head (11) is made of rubber material with anti-slip texture on its surface.

7. The special fixture for surface treatment of inverter copper parts as described in claim 1, characterized in that: The number of the retractable support rods (10) is 4 to 8, which are evenly distributed in the lower mounting holes of the base (1).

8. The special fixture for surface treatment of inverter copper parts as described in claim 1, characterized in that: The axis of the hinge (7) is perpendicular to the plane of the base (1), so that the clamping arm (6) can rotate around the axis of the hinge (7) to accommodate copper parts of different sizes.

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