Feeding structure for choking coil forming machine

Abstract

The utility model discloses a feeding structure for a choking coil forming machine, which comprises a guide sleeve, a paint scraping assembly and a locking assembly which are sequentially arranged along the advancing direction of an enameled wire, the locking assembly is provided with two wire clamping blocks used for clamping the enameled wire, the locking assembly is provided with a clamping cylinder, and the clamping cylinder is in driving connection with the wire clamping blocks. The wire clamping block comprises a steel block, an elastic sheet and a copper sheet used for making contact with the enameled wire, and the elastic sheet is arranged between the copper sheet and the steel block. The feeding structure disclosed by the utility model is favorable for stabilizing the product quality of the choking coil.

Description

Technical Field

[0001] This utility model relates to the field of choke ring manufacturing equipment, specifically to a feeding structure for a choke ring forming machine. Background Technology

[0002] Currently, choke coils are manufactured using a choke coil forming machine. Specifically, the enameled wire used to make the choke coil is output through a wire feeding device. The enameled wire is wound onto a spool, and the wire feeding device is equipped with a damper to ensure that the spool rotates with damping, thus preventing the enameled wire from being transported loosely. An example of a choke coil forming machine can be found in Chinese Utility Model Patent Publication No. CN214298009U, entitled "A Discharge Device for a Choke Coil Forming Machine." The servo conveyor of the choke coil forming machine can transport copper wire (enameled wire) to a fixed length. In practical applications, a feeding structure is also provided between the spool and the servo conveyor of the choke coil forming machine. The feeding structure mainly includes a coating scraping assembly, which includes a coating scraper. The coating scraping working principle of the coating scraper is prior art. An example of a coating scraping assembly can be found in Chinese Utility Model Patent Publication No. CN201985419U, entitled "Enameled Wire Coating Scraping Machine," which features intermittent coating scraping processing. The workflow is as follows: When the servo conveyor of the choke coil forming machine pulls and conveys the enameled wire to a fixed length so that the choke coil forming machine has finished winding one choke coil, the servo conveyor will pause briefly to allow the choke coil to complete the material discharge action. During the pause of the servo conveyor, the paint scraping component performs a partial paint scraping operation on the enameled wire. Since the enameled wire is in a stationary state at this time, the paint scraping component is equipped with a paint scraping feed cylinder. The paint scraping feed cylinder drives the paint scraper to move a certain distance along the extension direction of the enameled wire, scraping off a section of paint. Afterwards, the servo conveyor conveys the enameled wire to a fixed length again, and the choke coil forming machine winds the enameled wire into a choke coil and cuts it, thus completing the choke coil. Both ends are bare wires (with the enamel removed by the scraping component); however, during the scraping feed cylinder's feeding of the scraper, the scraper blade applies axial thrust to the enameled wire. Although the servo conveyor clamps the enameled wire, it is not easy to clamp it securely due to the smoothness and high hardness of the outer wall. This can easily cause the scraping feed cylinder to pull and shift the enameled wire significantly. As a result, the position of the bare wire becomes inaccurate during the subsequent winding process of the choke coil forming machine, and the length of the end of the choke coil also shows significant errors, affecting the product quality of the choke coil and even causing it to become a scrap. Therefore, the above-mentioned feeding structure in the existing technology needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a feeding structure for a choke ring forming machine, which helps to stabilize the product quality of the choke ring.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The present invention discloses a feeding structure for a choke coil forming machine, comprising a guide sleeve, a paint scraping assembly, and a locking assembly arranged sequentially along the enameled wire advancing direction. The locking assembly is provided with two wire clamping blocks for clamping the enameled wire, and the locking assembly is provided with a clamping cylinder, which drives and connects to the wire clamping blocks.

[0006] Preferably, the wire clamping block includes a steel block, an elastic sheet, and a copper foil for contacting the enameled wire, wherein the elastic sheet is disposed between the copper foil and the steel block.

[0007] Preferably, the edge of the copper sheet is formed with a folded edge, which is fixedly connected to the steel block by fixing screws.

[0008] Preferably, the locking assembly has a frame base, the two clamping blocks are disposed in the frame base, the clamping cylinder has a clamping cylinder body, and the clamping cylinder body is mounted on the frame base.

[0009] Preferably, the clamping cylinder is a finger cylinder, the clamping cylinder has two fingers, and the wire clamping blocks are respectively installed on the corresponding fingers.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting a guide sleeve, a paint scraping component and a locking component arranged sequentially along the enameled wire's forward direction, the locking component is provided with two wire clamping blocks for clamping the enameled wire, and the locking component is provided with a clamping cylinder. The clamping cylinder drives the wire clamping blocks, which can avoid the paint scraping component from having a significant negative impact on the choke ring forming machine, thereby helping to stabilize the product quality of the choke ring. Attached Figure Description

[0011] Figure 1 This is a front view schematic diagram of the feeding structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the left side of the locking assembly of this utility model.

[0013] Labeling: Guide sleeve 1; Paint scraper assembly 2; Base 21; Paint scraper 22; Paint scraper housing 221; Paint scraper feed cylinder 23; Locking assembly 3; Wire clamping block 31; Steel block 311; Copper sheet 312; Folded edge 3121; Elastic sheet 313; Fixing screw 314; Frame seat 32; Clamping cylinder 33; Clamping cylinder body 331; Clamping finger 332; Enamelled wire 99; Choke coil forming machine 98. Detailed Implementation

[0014] The present invention will now be further described with reference to the accompanying drawings.

[0015] The feeding structure of this utility model for a choke coil forming machine, such as Figure 1As shown, the assembly includes a guide sleeve 1, a paint scraping component 2, and a locking component 3 arranged sequentially along the forward direction of the enameled wire 99. The enameled wire 99 is conveyed from left to right, so the paint scraping component 2 is located to the right of the guide sleeve 1, the locking component 3 is located to the right of the paint scraping component 2, and the choke coil forming machine 98 is located to the right of the locking component 3. Figure 2 As shown, the locking assembly 3 has two clamping blocks 31 for clamping the enameled wire 99. The locking assembly 3 also has a clamping cylinder 33, which drives the clamping blocks 31. That is, the clamping cylinder 33 is used to move the two clamping blocks 31 closer together to clamp the enameled wire 99, and the clamping cylinder 33 can also move the two clamping blocks 31 further apart to release the enameled wire 99. The paint scraping assembly 2 includes a base 21, a paint scraper 22, and a paint scraping feed cylinder 23. The working principle of the paint scraper 22 is prior art. The paint scraper 22 has a paint scraper housing 221, which is slidably connected to the base 21 via a linear guide or linear bearing. The piston rod of the paint scraping feed cylinder 23 is connected to the paint scraper housing 221, so the paint scraping feed cylinder 23 can drive the paint scraper 22 to move to the left and to return to the right.

[0016] The working principle of this utility model is briefly explained below: Figure 1 As shown, the enameled wire 99 passes through the guide sleeve 1, and there is a gap between the enameled wire 99 and the guide sleeve 1 to avoid strong friction between the enameled wire 99 and the inner wall of the guide sleeve 1. However, the inner wall of the guide sleeve 1 can limit the radial displacement of the enameled wire 99, which is beneficial to the stability of the enameled wire 99 when it enters the paint scraping assembly 2. Figure 2 As shown, the enameled wire 99 passes between two clamping blocks 31. When the servo conveyor of the choke coil forming machine 98 pauses, the clamping cylinder 33 immediately drives the two clamping blocks 31 to move closer together to clamp and fix the enameled wire 99. The paint scraping assembly 2 works to scrape off a section of paint from the enameled wire 99. Specifically, the scraper blade of the paint scraper 22 rotates around the enameled wire 99, and the paint scraping feed cylinder 23 simultaneously drives the paint scraper 22 to move to the left to scrape off a section of paint. The scraper blade of the paint scraper 22 then resets and opens to leave the enameled wire 99. Then, the paint scraping feed cylinder 23 drives the paint scraper 22 to move to the right to reset, and the clamping cylinder 33 then drives the two clamping blocks 31 to move further apart to release the paint. After the enameled wire 99 is fed, the servo conveyor of the choke coil forming machine 98 delivers the enameled wire 99 at a fixed length, and this cycle repeats. Since the enameled wire 99 first passes through the locking component 3 before reaching the servo conveyor of the choke coil forming machine 98, when the locking component 3 clamps the enameled wire 99, the enameled wire 99 on the right side of the locking component 3 is isolated from the enameled wire 99 on the left side of the locking component 3. This prevents the enameled wire 99 from being significantly pulled when the paint scraper feed cylinder 23 drives the paint scraper 22 to move to the left. This avoids causing significant negative impact on the choke coil forming machine 98 in making the choke coil, keeping the manufacturing error of the choke coil within the allowable range, and thus helping to stabilize the product quality of the choke coil.

[0017] Furthermore, such as Figure 2 As shown, the wire clamping block 31 includes a steel block 311, an elastic sheet 313, and a copper sheet 312 for contacting the enameled wire 99. The elastic sheet 313 is located between the copper sheet 312 and the steel block 311. The clamping cylinder 33 can be connected to the steel block 311. The copper sheet 312 can be made of copper sheet, and the thickness of the copper sheet 312 can be approximately 0.15 mm to 0.3 mm. The elastic sheet 313 can be made of materials such as silicone rubber or polyurethane rubber. The steel block 311 can be made of ordinary carbon steel. When the clamping cylinder 33 drives the clamping block 31 to clamp the enameled wire 99, the clamping speed of the clamping block 31 needs to be set relatively quickly in order to speed up the production pace. Since the enamel coating of the enameled wire 99 is thin and the copper core of the enameled wire 99 provides support, the outer wall of the enameled wire 99 has a relatively high hardness. In order to clamp the enameled wire 99 firmly, the clamping force of the clamping cylinder 33 on the enameled wire 99 is also relatively large. Therefore, if plastic or rubber is placed in direct contact with the enameled wire 99, the relative impact of the enameled wire 99 with the clamping block 31 and the reaction force of the enameled wire 99 on the clamping block 31 will cause the clamping block 31 to quickly dent and wear out. Since the diameter of the enameled wire 99 is small, the dent and wear of the clamping block 31 will easily lead to the inability to clamp the enameled wire 99. However, if a harder material such as a steel plate, aluminum plate, or copper plate is placed in direct contact with the enameled wire 99, it will easily cause the enamel coating of the enameled wire 99 to break. In this embodiment, the copper foil 312 contacts the enameled wire 99, which avoids easy wear and tear on the copper foil 312. Because the copper foil 312 is relatively thin, it can deform slightly when pressed by the enameled wire 99. The elastic sheet 313 supports the copper foil 312 from behind, allowing it to elastically clamp the enameled wire 99 (avoiding rigid clamping). Furthermore, when the clamping block 31 impacts the enameled wire 99, the elastic sheet 313 effectively cushions the impact, preventing scratches or tears to the enameled wire 99. The slight indentation and deformation of the copper foil 312 increases the contact area between it and the enameled wire 99, thus ensuring a stable clamping of the wire by the clamping block 31. After prolonged use, when the copper foil 312 wears out, only the copper foil 312 needs to be replaced, resulting in low maintenance costs.

[0018] Furthermore, such as Figure 2As shown, the edge of the copper sheet 312 is formed with a folded edge 3121. The folded edge 3121 is fixedly connected to the steel block 311 by a fixing screw 314. Specifically, the folded edge 3121 is perpendicular to the body of the copper sheet 312 (the part used to contact the enameled wire 99). A screw hole is formed on the side wall of the steel block 311. The fixing screw 314 passes through the folded edge 3121 and is screwed into the screw hole. This facilitates the reliable positioning of the copper sheet 312 and the steel block 311. More specifically, the copper sheet 312 has folded edges 3121 formed around its perimeter, and the perimeter of the elastic sheet 313 is respectively attached to the inner side of the folded edge 3121, thereby effectively positioning the elastic sheet 313.

[0019] Furthermore, the locking assembly 3 is provided with a frame base 32, and two wire clamping blocks 31 are provided inside the frame base 32, so the enameled wire 99 passes through the frame base 32. The clamping cylinder 33 is provided with a clamping cylinder body 331, which is installed on the frame base 32. Since the rigidity of the frame structure of the frame base 32 is greater than the rigidity of the cantilever support, it is beneficial to make the clamping cylinder body 331 installed stably.

[0020] Furthermore, such as Figure 2 As shown, the clamping cylinder 33 is a finger cylinder, so the clamping cylinder 33 has two clamping fingers 332, and the wire clamping blocks 31 are respectively installed on the corresponding clamping fingers 332. Specifically, the steel blocks 311 are connected to the corresponding clamping fingers 332 by corresponding screws. Since the two clamping fingers 332 of the clamping cylinder 33 can move synchronously towards each other or synchronously away from each other when the clamping cylinder 33 is activated, after the clamping cylinder 33 drives the two wire clamping blocks 31 to open, the enameled wire 99 can be prevented from still contacting the wire clamping blocks 31. Then the enameled wire 99 is fed to the right, which prevents the enameled wire 99 from rubbing against the wire clamping blocks 31 and avoids scratching the enamel of the enameled wire 99.

Claims

1. A feeding structure for a choke coil forming machine, characterized in that: The device includes a guide sleeve (1), a paint scraping assembly (2), and a locking assembly (3) arranged sequentially along the forward direction of the enameled wire (99). The locking assembly (3) is provided with two wire clamping blocks (31) for clamping the enameled wire (99). The locking assembly (3) is provided with a clamping cylinder (33), which drives the wire clamping blocks (31).

2. The feeding structure for a choke coil forming machine according to claim 1, characterized in that: The clamping block (31) includes a steel block (311), an elastic sheet (313), and a copper sheet (312) for contacting the enameled wire (99), wherein the elastic sheet (313) is disposed between the copper sheet (312) and the steel block (311).

3. The feeding structure for a choke coil forming machine according to claim 2, characterized in that: The edge of the copper sheet (312) is formed with a folded edge (3121), and the folded edge (3121) is fixedly connected to the steel block (311) by a fixing screw (314).

4. The feeding structure for a choke coil forming machine according to claim 2, characterized in that: The locking assembly (3) is provided with a frame (32), and two clamping blocks (31) are provided in the frame (32). The clamping cylinder (33) is provided with a clamping cylinder body (331), and the clamping cylinder body (331) is installed on the frame (32).

5. The feeding structure for a choke coil forming machine according to claim 4, characterized in that: The clamping cylinder (33) is a finger cylinder, and the clamping cylinder (33) has two finger clamps (332). The wire clamping block (31) is installed on the corresponding finger clamp (332).

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