Coil clamping jaw and clamping method thereof

Abstract

The invention relates to the technical field of wire harness processing, in particular to a coil clamping jaw and a clamping method thereof.The coil clamping jaw comprises an inner supporting assembly and an outer supporting assembly, the inner supporting assembly comprises two parallel and opposite inner supporting arms, and the two inner supporting arms are used for being supported on the inner walls of the two opposite sides of a coil; the downward pressing assembly comprises a downward pressing arm, and the downward pressing arm is perpendicular to the two inner supporting arms and used for pressing the upper surface of the coil; the clamping arm assembly comprises clamping arms arranged on the outer sides of the two inner supporting arms respectively, the clamping arms are in an L shape, and the clamping arms comprise a first clamping arm and a second clamping arm perpendicularly connected with the first clamping arm at the end. Wherein the clamping arms are movably connected and are moved to be parallel to the inner supporting arm when clamping the coil, the two second clamping arms face each other, and the downward pressing arm, the first clamping arm, the second clamping arms and the inner supporting arm form a closed clamping space for single-side clamping of the coil. By means of the structural arrangement, the number of turns and the number of layers of the coils can be kept during winding, and the consistency of follow-up binding and packaging of the coils is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness processing, and particularly to a coil jaw and a clamping method thereof. Background Art

[0002] In modern wire harness production, the winding process is a very crucial link, especially when dealing with long and flexible wire harnesses. The winding process is usually carried out after production to facilitate packaging, transportation, and subsequent assembly.

[0003] In the prior art, for example, a Chinese invention patent with the publication number CN116353892A discloses a nylon wire automatic winding machine on June 30, 2023. It realizes the winding operation of the wire harness through a winding component, and then moves the wound coil to a wire tying component through a moving component for wire tying and bundling. Through the above settings, the automatic winding operation of the wire harness is achieved.

[0004] However, most of the jaws on the above-mentioned moving component are two symmetrically arranged arc-shaped jaws. During the process of clamping the wound coil, the stability of the coil is poor, and the wire harnesses are prone to move, resulting in the coil becoming loose during the transfer process, and ultimately leading to poor consistency in coil binding. Summary of the Invention

[0005] In view of at least one of the above technical problems, the present invention provides a coil jaw and a clamping method thereof, which improve the stability of coil clamping by improving the jaw structure.

[0006] According to a first aspect of the present invention, there is provided a coil jaw, comprising: An inner support component, the inner support component includes two parallel and oppositely arranged inner support arms, and the two inner support arms are used to support on the inner walls of the opposite sides of the coil; A downward pressing component, the downward pressing component includes a downward pressing arm, the downward pressing arm is perpendicularly arranged with the two inner support arms, and is relatively movably arranged in the length direction of the inner support arms, for pressing the upper surface of the coil; A jaw arm component, including clamping arms respectively arranged on the outer sides of the two inner support arms, the clamping arms are L-shaped, and the clamping arms include a first clamping arm and a second clamping arm perpendicularly connected to the end of the first clamping arm; Wherein, the clamping arms are movably connected and are moved to a state parallel to the inner support arms when clamping the coil, and the two second clamping arms face each other. The two ends of the downward pressing arm extend to the outside of the first clamping arm, and the downward pressing arm, the first clamping arm, the second clamping arm, and the inner support arm form a closed clamping space for single-side clamping of the coil.

[0007] Furthermore, the distance between the two inner support arms is adjustable.

[0008] Further, the inner support assembly includes a fixed bracket, a slide rail disposed on the fixed bracket, a sliding bracket slidably disposed on the slide rail, and a first driving member fixed on the fixed bracket and connected to the sliding bracket; The inner support arms are fixed to the sliding bracket, and the first driving member is used to adjust the distance between the two inner support arms.

[0009] Further, a first hollow window extending in a direction away from the sliding bracket is provided in the middle of the inner support arm, and the pressing arm extends into the first hollow window.

[0010] Further, the first hollow window penetrates the inner support arm in a direction away from the sliding bracket, so that one end of the inner support arm in the direction away from the sliding bracket forms two inner support feet; The second clamping arm extends between the two inner support feet when clamping the wire harness.

[0011] Further, the inner support feet on the two inner support arms are bent inward by a set angle to form a first guiding surface, and the first guiding surface is used for guiding the inner wall of the coil; Inclined second guiding surfaces are formed on the surfaces of the two inner support feet on the inner support arm facing each other, and the second guiding surfaces are used for guiding the second clamping arm.

[0012] Further, the first clamping arm is rotatably connected to the sliding bracket, and a slider is further provided on the sliding bracket and movably connected to one end of the first clamping arm away from the second clamping arm. The clamping arm assembly further includes a second driving member fixed on the sliding bracket and connected to the slider, and the second driving member is used to drive the clamping arm to open in a direction away from the inner support arm or to close in the reverse direction.

[0013] Further, a second hollow window is further provided on the first clamping arm, and both ends of the pressing arm penetrate out of the second hollow window when the clamping arm is closed.

[0014] Further, the pressing assembly further includes a fixed seat disposed on the fixed bracket, and a smooth rod slidably passing through the fixed seat and vertically connected to the pressing arm. A compression spring is further sleeved on the smooth rod, one end of the compression spring abuts against the fixed seat, and the other end abuts against the pressing arm.

[0015] According to the second aspect of the present invention, a clamping method for the above coil jaw is further provided, including the following steps: Open the two clamping arms so that the two clamping arms are in a state away from the inner support arm; Adjust the maximum distance between the two inner support arms according to the inner diameter of the coil, so that the distance between the outer walls of the two inner support arms is less than the inner diameter of the coil; Move the coil gripper so that the two inner support arms respectively support on the two inner walls of the coil, and press the lower pressing arm against the upper surface of the coil; Close the two clamping arms so that the first clamping arm is parallel to the inner support arm, and the second clamping arms of the two clamping arms are respectively at the bottom of the coil, forming two closed coil clamping structures.

[0016] The beneficial effects of the present invention are as follows: Through the two inner support arms, the lower pressing arm and the two clamping arms, by moving the clamping arms, the inner support arms, the lower pressing arm, and the first and second clamping arms of the clamping arms form two closed clamping spaces that are in contact with the upper, lower, left, and right sides of the coil. Compared with the prior art, the closed clamping space restricts the displacement of the wire harness inside the coil, thereby improving the consistency of the coil during movement and binding. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the coil gripper in the embodiment of the present invention; Figure 2 It is a front view of the coil gripper during clamping in the embodiment of the present invention; Figure 3 In the embodiment of the present invention Figure 2 Partial enlarged view of part A; Figure 4 In the embodiment of the present invention Figure 1 Partial enlarged view of part B; Figure 5 It is a schematic structural diagram of the coil gripper when it is opened in the embodiment of the present invention; Figure 6 It is a schematic structural diagram of the coil gripper before clamping the coil in the embodiment of the present invention; Figure 7 It is a schematic structural diagram of the coil gripper when it is inserted into the inner wall of the coil in the embodiment of the present invention; Figure 8 It is a schematic structural diagram of the coil gripper when it is clamping the coil in the embodiment of the present invention; Figure 9 It is a step flow chart of the clamping method of the coil gripper in the embodiment of the present invention.

[0019] Description of the reference numerals in the drawings: 1. Inner support assembly; 11. Inner support arm; 11a. First hollow window; 11b. Inner support leg; 11b1. First guiding surface; 11b2. Second guiding surface; 12. Fixed bracket; 13. Slide rail; 14. Sliding bracket; 15. First driving member; 2. Pressing-down assembly; 21. Pressing-down arm; 22. Fixed seat; 23. Optical rod; 24. Compression spring; 3. Clamping arm assembly; 31. Clamping arm; 31a. First clamping arm; 31a1. Second hollow window; 31b. Second clamping arm; 32. Slide block; 33. Second driving member. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] As Figures 1 to 5 shown, the coil gripper includes an inner support assembly 1, a pressing-down assembly 2 and a clamping arm assembly 3. Specifically, as Figure 1 shown in the figure, the inner support assembly 1 includes two parallel and oppositely arranged inner support arms 11, and the two inner support arms 11 are used to support on the inner walls of the opposite sides of the coil. In some embodiments, the two inner support arms 11 are vertically arranged. When clamping the wound coil, first insert the two inner support arms 11 into the coil so that the two inner support arms 11 respectively abut against the two inner side walls of the coil. It should be noted here that those skilled in the art can set the distance between the inner support arms 11 as needed. There are various specific setting methods. For example, the position of the inner support arms 11 can be adjusted in a detachable manner, or the inner support arms 11 can be driven by a driving member to be adjusted. This will be described in detail in the following part of this embodiment.

[0024] Please continue to refer to Figure 1 In an embodiment of the present invention, the pressing-down assembly 2 includes a pressing-down arm 21 which is perpendicularly arranged with respect to the two inner supporting arms 11 and is relatively movably arranged in the length direction of the inner supporting arms 11 for pressing the upper surface of the coil; in an embodiment of the present invention, the pressing-down arm 21 is used for pressing the upper surface of the coil, the length of the pressing-down arm 21 meets the requirement of spanning the coil, and the pressing-down power of the pressing-down arm 21 has various forms. For example, it can be compressed in the form of a spring, or can be pressed down by a separate driving member such as a cylinder, etc.

[0025] In an embodiment of the present invention, the clamping-arm assembly 3 includes clamping arms 31 respectively arranged on the outer sides of the two inner supporting arms 11. The clamping arms 31 are in an L shape and include a first clamping arm 31a and a second clamping arm 31b perpendicularly connected to the end of the first clamping arm 31a; the clamping arms 31 are used for abutting against the outer side wall and the bottom of the coil; in an embodiment of the present invention, the clamping arms 31 are movably connected and are moved to a state parallel to the inner supporting arms 11 when clamping the coil, and the two second clamping arms 31b are arranged facing each other. The two ends of the pressing-down arm 21 extend outside the first clamping arm 31a, and the pressing-down arm 21, the first clamping arm 31a, the second clamping arm 31b and the inner supporting arms 11 form a closed clamping space for clamping the coil on one side.

[0026] Specifically, please refer to Figure 3 which is a schematic diagram of the clamping structure on one side of the coil in an embodiment of the present invention. The pressing-down arm 21 presses on the upper surface of the coil, the outer wall of the inner supporting arm 11 supports the inner wall of the coil, the second clamping arm 31b supports the bottom of the coil, and the second clamping arm 31b abuts against the outer wall of the coil. Through the setting of this structural form, multiple wire harnesses on the coil are mutually tangent and abutted against each other, thereby avoiding the mutual movement of the inner wire harnesses of the coil in the clamping pot, enabling the cross-section of the coil to maintain a good rectangular structure. Compared with the prior art, the displacement between the wire harnesses is avoided during the clamping process of the coil, thereby enabling the structural form of the coil during winding to be maintained, and improving the consistency of coil winding and packaging.

[0027] In the above embodiment, through the two inner supporting arms 11, the pressing-down arm 21 and the two clamping arms 31, by the movement of the clamping arms 31, the inner supporting arms 11, the pressing-down arm 21 and the first clamping arm 31a and the second clamping arm 31b of the clamping arms 31 form two closed clamping spaces that are in contact with the upper, lower, left and right sides of the coil respectively. Compared with the prior art, the closed clamping space restricts the displacement of the wire harnesses inside the coil, thereby improving the consistency of the coil during movement and binding.

[0028] Based on the above embodiment, in some embodiments of the present invention, the distance between the two inner supporting arms 11 is adjustable. Specifically, please refer to Figure 1, in an embodiment of the present invention, the inner support assembly 1 includes a fixed bracket 12, a slide rail 13 disposed on the fixed bracket 12, a sliding bracket 14 slidably disposed on the slide rail 13, and a first driving member 15 fixed to the fixed bracket 12 and connected to the sliding bracket 14; the inner support arms 11 are fixed to the sliding bracket 14, and the first driving member 15 is used to adjust the distance between the two inner support arms 11. It should be noted here that there are various structural forms of the first driving member 15. For example, it can be driven by the structure of a motor and a lead screw, or the rotation of the motor can drive the rotation of gears, sprockets or synchronous wheels to realize the movement of racks, chains or synchronous belts. The racks, chains or synchronous belts are connected to the sliding bracket 14, thereby meeting the requirement of adjusting the sliding bracket 14 to a set distance.

[0029] In an embodiment of the present invention, as Figure 4 shown in, the middle of the inner support arm 11 has a first hollow window 11a extending in a direction away from the sliding bracket 14, and the pressing arm 21 extends into the first hollow window 11a. Through the setting of the first hollow window 11a, on the one hand, it provides a guiding function for the movement of the pressing arm 21, and at the same time, it can also prevent the pressing arm 21 from shaking during the pressing process, thereby improving the pressing effect of the pressing arm 21.

[0030] Please continue to refer to Figure 4 , in an embodiment of the present invention, the first hollow window 11a penetrates the inner support arm 11 in a direction away from the sliding bracket 14, so that one end of the inner support arm 11 in the direction away from the sliding bracket 14 forms two inner support feet 11b; the second clamping arm 31b extends between the two inner support feet 11b when clamping the wire harness. Through the structural setting that the second clamping arm 31b can extend between the two inner support feet 11b, the inner support feet 11b can play a role in restricting the coil during the closing process of the second clamping arm 31b, improving the reliability of clamping while also saving space occupancy.

[0031] In an embodiment of the present invention, as Figure 4 shown in, the inner support feet 11b on the two inner support arms 11 are bent at a set angle towards the inside to form a first guiding surface 11b1, and the first guiding surface 11b1 is used for guiding the inner wall of the coil; the bending towards the inside here means that the inner support feet 11b on the two inner support arms 11 are bent towards the direction of the other inner support arm 11. Through this form of setting, it plays a guiding role during the process of inserting the inner support arm 11 into the inner wall of the coil, reducing the precision requirement when the inner support arm 11 is inserted into the coil. In addition, in an embodiment of the present invention, please continue to refer to Figure 4 , inclined second guiding surfaces 11b2 are formed on the surfaces of the two inner support feet 11b on the inner support arm 11 facing each other, and the second guiding surfaces 11b2 are used for guiding the second clamping arm 31b. As Figure 4As shown, the inner side walls of the two inner support feet 11b facing each other are in a flare-shaped structure. Through this flared structure setting, the second clamping arm 31b can be guided into the space between the two inner support feet 11b, thereby further improving the reliability of clamping.

[0032] In the embodiment of the present invention, the specific structure of the clamping arm assembly 3 is as Figure 1 and Figure 5 shown. The first clamping arm 31a is rotatably connected to the sliding bracket 14. The sliding bracket 14 also has a slider 32 movably connected to one end of the first clamping arm 31a away from the second clamping arm 31b. The clamping arm assembly 3 further includes a second driving member 33 fixed to the sliding bracket 14 and connected to the slider 32. The second driving member 33 is used to drive the clamping arm 31 to open in a direction away from the inner support arm 11 or to close in the reverse direction. In the embodiment of the present invention, the slider 32 is rotatably connected to the upper end of the first clamping arm 31a. The second driving member 33 can be a cylinder, a hydraulic cylinder, or other conventional linear driving structures. By the movement of the slider 32, the rotation of the first clamping arm 31a is driven, thereby realizing the opening or closing of the first clamping arm 31a.

[0033] Please continue to refer to Figure 4 , in some embodiments of the present invention, the first clamping arm 31a also has a second hollow window 31a1. When the clamping arm 31 is closed, both ends of the lower pressing arm 21 pass through the second hollow window 31a1. In the embodiment of the present invention, the second hollow window 31a1 is correspondingly arranged with the first hollow window 11a. Through the setting of the second hollow window 31a1, it also provides a guiding function for the closing process of the clamping arm 31, thereby ensuring the reliability of clamping.

[0034] Please continue to refer to Figure 5 , in some embodiments of the present invention, the lower pressing assembly 2 further includes a fixed seat 22 arranged on the fixed bracket 12, and a smooth rod 23 slidably passing through the fixed seat 22 and perpendicularly connected to the lower pressing arm 21. A compression spring 24 is also sleeved on the smooth rod 23. One end of the compression spring 24 abuts against the fixed seat 22, and the other end abuts against the lower pressing arm 21. Through such a setting, during the process of inserting the coil gripper into the coil, due to the action of the compression spring 24, the lower pressing arm 21 can maintain contact with the upper surface of the coil, and make the lower pressing arm 21 have a flexible contact with the upper surface of the coil, which can avoid damage to the coil by the lower pressing arm 21.

[0035] In the embodiment of the present invention, a clamping method for the above coil gripper is also provided, as Figures 6 to 9 shown, including the following steps: S10: Open the two clamping arms 31 so that the two clamping arms 31 are in a state away from the inner support arm 11; as Figure 6As shown in [the figure], in some embodiments of the present invention, the first clamping arm 31a is opened to a state parallel to the downward pressing arm 21. Through the setting of this type of structure, the second clamping arm 31b can be on both sides of the outer wall of the coil, thereby ensuring the reliability of clamping the coil.

[0036] S20: Adjust the farthest distance between the two inner support arms 11 according to the inner diameter of the coil, so that the outer wall distance between the two inner support arms 11 is less than the inner diameter of the coil; the adjustment of the above distance can be set during the installation of the inner support arms 11, and can be adjusted by the first driving member 15 when clamping coils with different inner diameters.

[0037] S30: Move the coil gripper so that the two inner support arms 11 respectively support on the two inner walls of the coil, and press the downward pressing arm 21 against the upper surface of the coil; as Figure 7 shown in [the figure], at this time, the inner surface and the upper surface of the coil have been defined by the two inner support arms 11 and the downward pressing arm 21 respectively.

[0038] S30: Close the two clamping arms 31 so that the first clamping arm 31a is parallel to the inner support arm 11, and the second clamping arms 31b of the two clamping arms 31 are respectively at the bottom of the coil, forming two closed coil clamping structures. As Figure 8 shown in [the figure], through the closing of the clamping arm 31, the lower surface and the outer surface of the coil are fixed. Through the clamping of this structure form, the number of turns and layers of the coil winding can be maintained in the state during winding. After binding or tape winding, the state of the coil can be kept consistent.

[0039] Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coil clamp, characterized in that: include: An inner support assembly, the inner support assembly comprising two inner support arms arranged parallel and opposite to each other, the two inner support arms being used to support inner walls on opposite sides of the coil; A pressing assembly, the pressing assembly comprising a pressing arm, the pressing arm being arranged perpendicularly to the two inner support arms and being relatively movable in the length direction of the inner support arms, for pressing the upper surface of the coil; A clamping arm assembly, comprising clamping arms respectively arranged on the outer sides of the two inner support arms, the clamping arms are L-shaped, and the clamping arms include a first clamping arm and a second clamping arm vertically connected to the first clamping arm at an end thereof; Among them, the clamping arm is movably connected and is moved to a state parallel to the inner support arm when clamping the coil, and the two second clamping arms are arranged toward each other, and the two ends of the lower pressure arm extend to the outside of the first clamping arm, and the lower pressure arm, the first clamping arm, the second clamping arm and the inner support arm constitute a closed clamping space for clamping the coil on one side.

2. The coil clamp according to claim 1, characterized in that: The distance between the two inner support arms can be adjusted.

3. The coil clamp according to claim 2, characterized in that: The inner support assembly includes a fixed bracket, a slide rail disposed on the fixed bracket, a sliding bracket slidably disposed on the slide rail, and a first driving member fixed on the fixed bracket and connected to the sliding bracket; The inner support arm is fixed on the sliding bracket, and the first driving member is used to adjust the distance between the two inner support arms.

4. The coil clamp according to claim 3, characterized in that: The middle portion of the inner support arm has a first hollow window extending in a direction away from the sliding bracket, and the lower pressing arm extends into the first hollow window.

5. The coil clamp according to claim 4, characterized in that: The first hollow window is provided with the inner support arm opened in a direction away from the sliding bracket, so that one end of the inner support arm away from the sliding bracket forms two inner support legs; The second clamping arm extends between the two inner supporting legs when clamping the wire harness.

6. The coil clamp according to claim 5, characterized in that: The inner support legs on the two inner support arms are bent inward at a set angle to form a first guide surface, and the first guide surface is used for guiding the inner wall of the coil; Two inner support legs on the inner support arm are formed with inclined second guide surfaces on surfaces facing each other, and the second guide surfaces are used for guiding the second clamping arm.

7. The coil clamp according to claim 3, characterized in that: The first clamping arm is rotatably connected to the sliding bracket, and the sliding bracket also has a sliding block movably connected to an end of the first clamping arm away from the second clamping arm. The clamping arm assembly also includes a second driving member fixed to the sliding bracket and connected to the sliding block, and the second driving member is used to drive the clamping arm to open in a direction away from the inner support arm or to close in the opposite direction.

8. The coil clamp according to claim 7, characterized in that: The first clamping arm also has a second hollow window, and when the clamping arm is closed, the two ends of the pressing arm pass through the second hollow window.

9. The coil clamp according to claim 3, characterized in that: The pressing assembly also includes a fixed seat arranged on the fixed bracket, and a light rod slidably passed through the fixed seat and vertically connected to the pressing arm. A compression spring is also sleeved on the light rod, one end of the compression spring abuts against the fixed seat, and the other end abuts against the pressing arm.

10. A method for clamping a coil clamp as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Opening the two clamping arms so that the two clamping arms are away from the inner support arm; Adjust the maximum distance between the two inner support arms according to the inner diameter of the coil so that the distance between the outer walls of the two inner support arms is smaller than the inner diameter of the coil; Move the coil clamping claw so that the two inner support arms are respectively supported on the two inner walls of the coil, and the lower pressing arm is attached to the upper surface of the coil; The two clamping arms are closed so that the first clamping arm is parallel to the inner support arm, and the second clamping arms of the two clamping arms are respectively located at the bottom of the coil, forming two closed coil clamping structures.

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