A rotary clamp for spraying an in-ear earphone

Abstract

The utility model discloses an earphone spraying rotary clamp belongs to the technical field of spraying processing equipment. The clamp includes motor, the rotation rod coaxial connection in the motor, the fixed ring fixed in the rotation rod, the connecting rod connected fixed ring, the outer plate connected in the connecting rod and the dismounting mechanism fixed in the outer plate, and the dismounting mechanism is used for clamping earphone shell. The dismounting mechanism includes fixed frame, two clamping plates slidingly fitted in the fixed frame, and the spring and the damping rod connected between the two clamping plates, the spring is used for providing the clamping force of mutual approaching, and the damping rod is provided in parallel with the spring, is used for providing the buffer when clamping plate movement. The utility model discloses the parallel combination of setting spring and damping rod, solved the problem that the existing clamp clamping releases the big impact, easy to damage workpiece, reached the technical effect that clamping action is stable, and the buffering effect is good, can effectively protect workpiece.

Description

Technical Field

[0001] This utility model relates to the field of spray coating equipment technology, and in particular to a rotary clamp for spray coating in-ear headphones. Background Technology

[0002] In-ear headphones, as common consumer electronics, typically have irregularly curved shells. To obtain a uniform and aesthetically pleasing coating during the spraying process, the headphone shell needs to be fixed on a specialized spraying fixture. During the spraying process, the fixture usually needs to rotate the headphone shell to coordinate with the fixed spraying equipment and ensure that the workpiece surface is covered at all angles.

[0003] Existing rotary clamps have shortcomings in workpiece clamping and unloading. Many clamps use manual locking or simple spring clip structures. Manual locking is inefficient and unsuitable for automated mass production. While clamps with simple spring clip structures improve loading and unloading speed, the restoring force generated by the spring clips at the moment of clamping or releasing the workpiece is rigid and uncontrolled, which can easily cause impact and vibration to the headphone shell surface.

[0004] Such rigid impacts can not only damage or scratch the already painted surface, but also cause slight displacement of the workpiece during clamping, leading to inaccurate positioning and affecting the uniformity of rotary spraying. The root cause is that existing clamping mechanisms generally lack a stable buffering mechanism, resulting in insufficient reliability and stability of the clamping action, making it difficult to simultaneously meet the production requirements of rapid loading and unloading and high-precision positioning.

[0005] Therefore, this utility model proposes a rotating clamp for spraying in-ear headphones to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of rotary clamps for spraying in-ear headphones, such as the lack of a stable buffer mechanism in the clamping mechanism and the large rigid impact, which leads to insufficient reliability and stability of workpiece loading and unloading, this utility model aims to provide a rotary clamp for spraying in-ear headphones with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a rotating clamp for spraying in-ear headphones, including a motor, a rotating rod, a fixing ring, a connecting rod, an outer plate, and a disassembly mechanism.

[0008] The rotating rod is coaxially and fixedly connected to the motor output end. A retaining ring is fixedly sleeved on the outer circumference of the rotating rod. A connecting rod is radially fixedly connected to the outer circumference of the retaining ring. An outer plate is fixedly connected to the end of the connecting rod away from the retaining ring. A disassembly mechanism is fixedly installed on the side wall of the outer plate away from the connecting rod. The disassembly mechanism is used to detachably clamp the earphone shell.

[0009] The disassembly mechanism includes a fixed frame, two clamping plates, a spring, and a damping rod. The fixed frame is fixedly connected to the surface of the outer plate, forming a rectangular frame structure with accommodating space. The two clamping plates are arranged opposite to each other and are connected to the inner wall of the fixed frame by a sliding fit, allowing them to reciprocate linearly towards or away from each other along the length of the fixed frame. A spring and a damping rod are connected between the inner walls of the two clamping plates on opposite sides.

[0010] Preferably, the spring is in a naturally contracted or pre-tensioned state, applying a pulling force to the two clamping plates to bring them closer together, and the pulling force provides the clamping force. A damping rod is disposed beside the spring and parallel to it to provide motion cushioning when the clamping plates move, ensuring a smooth clamping and release process.

[0011] Preferably, in order to achieve precise sliding guidance, the inner top wall and inner bottom wall of the fixed frame are provided with guide grooves along their length direction. The top and bottom surfaces of the two clamping plates are respectively provided with guide sliders that are adapted to the guide grooves. The guide sliders are slidably engaged in the corresponding guide grooves, thereby ensuring the linear motion trajectory of the clamping plates. Furthermore, the sliding stroke of the guide sliders limits the maximum separation distance between the two clamping plates.

[0012] Preferably, to achieve effective buffering and shock absorption, the damping rod is a telescopic structure, which includes a damping sleeve and a piston rod. The tail end of the damping sleeve is fixedly connected to the side wall of one of the clamping plates. The internal cavity of the damping sleeve is filled with damping oil or high-pressure gas. One end of the piston rod is slidably inserted into the inside of the damping sleeve and sealed with the inner wall of the damping sleeve. The other end of the piston rod extends out of the damping sleeve and is fixedly connected to the side wall of the other clamping plate.

[0013] Preferably, to improve the overall spraying efficiency, there are several connecting rods, which are evenly distributed in a ring array along the outer circumference of the fixing ring. Each connecting rod is connected to an outer plate and a disassembly mechanism at its end. The surfaces of all the outer plates are in the same vertical plane or are parallel to the axis of the rotating rod.

[0014] Preferably, in order to improve the stability of clamping and protect the surface of the earphone shell, the side walls of the two clamping plates that are close to each other are provided with contoured clamping grooves that are adapted to the outer contour of the earphone shell. The inner wall surface of the contoured clamping groove is covered with a rubber anti-slip pad or a silicone buffer layer by an adhesive. The surface of the rubber anti-slip pad is provided with several anti-slip textures.

[0015] Preferably, to ensure stable installation of the equipment, a mounting base is fixedly connected to the bottom of the motor body. The mounting base is a rectangular plate structure with several through bolt mounting holes at its four corners. The motor is fixedly installed on the spraying workbench by anchor bolts passing through the bolt mounting holes. Power is transmitted between the motor output shaft and the rotating rod through a coupling.

[0016] Preferably, to improve the connection strength of the structure, the outer plate and the connecting rod are fixedly connected by full welding or preferably manufactured as a single piece; the back of the fixing frame is fastened to the surface of the outer plate by countersunk screws, and the fixing frame has countersunk holes for the countersunk screws to be inserted at the fixed position.

[0017] Preferably, to improve the stability of the rotating system, a rotating shaft head is coaxially fixedly connected to the end of the rotating rod away from the motor. An auxiliary support bearing is rotatably connected to the outer circumferential surface of the rotating shaft head. The outer ring of the auxiliary support bearing is fixedly installed on the auxiliary support frame. The auxiliary support frame is used to limit and support the top of the rotating rod to prevent radial runout of the rotating rod when it rotates at high speed.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problem of existing fixtures being prone to shaking and having poor stability during rotation by setting a motor-driven rotating rod, which drives the fixed ring and outer plate to rotate synchronously, and setting an auxiliary support frame at the end of the rotating rod away from the motor for limiting support. This achieves the technical effect of smooth rotation, reliable support, and ensuring uniform spraying.

[0020] 2. This utility model solves the problems of cumbersome manual clamping, large impact force during release, and easy damage to workpieces in existing fixtures by setting a disassembly mechanism on the outer plate. The disassembly mechanism uses the spring restoring force in the fixed frame to drive the two clamping plates to automatically close and clamp together, and uses a damping rod set in parallel with the spring to provide buffer. It achieves the technical effect of automatic and fast clamping, smooth and impact-free operation, and effective protection of workpieces.

[0021] 3. This utility model solves the problem of easy deflection and inaccurate guidance of the clamping plate during reciprocating motion by opening a guide groove on the inner wall of the fixed frame and setting a guide slider on the clamping plate to slide and cooperate in the guide groove. It achieves the technical effect of stable structure, accurate guidance and ensuring smooth linear motion of the clamping plate.

[0022] 4. This utility model solves the problems of unstable clamping, easy slippage, and easy damage to the workpiece surface caused by using a flat clamping plate by opening a contoured clamping groove that matches the shape of the earphone shell on the clamping plate and attaching a rubber anti-slip pad in the groove. It achieves the technical effects of increasing the contact area, preventing slippage and slippage, and protecting the appearance of the workpiece from damage.

[0023] 5. This utility model solves the problem of low efficiency in a single operation by evenly arranging several connecting rods and corresponding disassembly mechanisms on the outer periphery of the fixed ring, and achieves the technical effect of multi-station simultaneous spraying operation and significantly improving the efficiency of mass production. Attached Figure Description

[0024] Fig. 1 This is a three-dimensional schematic diagram of a rotating clamp for spraying in-ear headphones according to the present invention.

[0025] Fig. 2 This is a schematic diagram of the fixing ring of a rotating clamp for spraying in-ear headphones according to the present invention.

[0026] Fig. 3 This is a schematic diagram of the clamping plate of a rotary clamp for spraying in-ear headphones, as proposed in this utility model.

[0027] Legend:

[0028] 1. Rotating rod; 2. Motor; 3. Fixing ring; 4. Outer plate; 5. Disassembly mechanism; 51. Fixing frame; 52. Damping rod; 53. Spring; 54. Clamping plate; 6. Connecting rod; 7. Earphone shell. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Example:

[0031] Reference Figs. 1 to 3 This utility model provides a rotary fixture for spraying in-ear headphones, which aims to solve the problems of insufficient rotational stability of existing headphone spraying fixtures leading to uneven spraying, as well as the complex workpiece clamping and disassembly structure, poor buffering performance, and impact on production efficiency.

[0032] The rotary fixture for spraying in-ear headphones includes a motor 2 and a rotating rod 1 coaxially fixedly connected to the output end of the motor 2. A fixing ring 3 is fixedly sleeved on the outer circumferential surface of the rotating rod 1. A connecting rod 6 is fixedly connected radially to the outer circumferential surface of the fixing ring 3. An outer plate 4 is fixedly connected to the end of the connecting rod 6 away from the fixing ring 3. The motor 2 serves as a power source to drive the rotating rod 1 to rotate, thereby driving the fixing ring 3, the connecting rod 6, and the outer plate 4 to rotate synchronously. The fixture also includes a disassembly mechanism 5 fixedly installed on the side wall of the outer plate 4. The disassembly mechanism 5 is used to detachably clamp the headphone shell 7.

[0033] The disassembly mechanism 5 includes a fixed frame 51 fixedly connected to the surface of the outer plate 4. The fixed frame 51 is constructed as a rectangular frame structure with an accommodating space. Two clamping plates 54 are arranged opposite each other within the accommodating space of the fixed frame 51. The two clamping plates 54 are connected to the inner wall of the fixed frame 51 by a sliding fit, and the two clamping plates 54 can reciprocate linearly towards or away from each other along the length of the fixed frame 51. A spring 53 and a damping rod 52 are connected between the inner walls of the two clamping plates 54 on opposite sides. The two ends of the spring 53 are respectively fixedly connected to the two clamping plates 54. On the opposite sidewalls of the clamping plates 54, and with the spring 53 in a naturally contracted or pre-tightened state, a pulling force is applied to the two clamping plates 54 to bring them closer together. The pulling force is used to automatically clamp the earphone shell 7 placed between the two clamping plates 54. The damping rod 52 is disposed on the side of the spring 53 and is parallel to the spring 53. The two ends of the damping rod 52 are also fixedly connected to the opposite sidewalls of the two clamping plates 54. The damping rod 52 is used to provide motion buffer when the spring 53 drives the clamping plates 54 to reset, or when the clamping plates 54 are separated by external force, to prevent the clamping plates 54 from moving too fast or vibrating.

[0034] In this embodiment, to ensure that the two clamping plates 54 move smoothly in reciprocating linear motion within the fixed frame 51, guide grooves are provided on the inner top and bottom walls of the fixed frame 51 along their length. The top and bottom surfaces of the two clamping plates 54 are respectively provided with guide sliders that are adapted to the guide grooves. The guide sliders are slidably engaged in the corresponding guide grooves. The sliding engagement of the guide sliders in the guide grooves limits the maximum separation distance of the two clamping plates 54, preventing them from coming out of the fixed frame 51 when subjected to force.

[0035] The damping rod 52 is preferably a telescopic hydraulic or pneumatic structure, specifically including a damping sleeve and a piston connecting rod. The tail end of the damping sleeve is fixedly connected to the side wall of one of the clamping plates 54. The internal cavity of the damping sleeve is filled with damping oil or high-pressure gas. One end of the piston connecting rod is slidably inserted into the inside of the damping sleeve and forms a sealing fit with the inner wall of the damping sleeve. The other end of the piston connecting rod extends out of the damping sleeve and is fixedly connected to the side wall of the other clamping plate 54. When the clamping plate 54 is separated by external force or reset under the action of the spring 53, the piston connecting rod moves relative to the damping sleeve, generating a controlled damping force through the internal medium to ensure smooth and shock-free clamping and releasing actions.

[0036] Both clamping plates 54 have contoured clamping grooves on their adjacent side walls that match the outer contour of the earphone shell 7. The contoured clamping grooves maximize the contact area between the clamping plates 54 and the earphone shell 7. The inner wall surface of the contoured clamping grooves is covered with a rubber anti-slip pad or a silicone buffer layer by an adhesive. The surface of the rubber anti-slip pad has several anti-slip textures. The anti-slip textures are used to increase the static friction when in contact with the earphone shell 7 during rotation. The elastomeric material of the rubber anti-slip pad or silicone buffer layer can prevent excessive clamping force from damaging the surface of the earphone shell 7 to be coated.

[0037] In a preferred embodiment, the inner top and bottom walls of the fixing frame 51 are provided with guide grooves along their length. The top and bottom surfaces of the two clamping plates 54 are respectively provided with guide sliders adapted to the guide grooves. The guide sliders are slidably engaged within the corresponding guide grooves. The sliding stroke of the guide sliders within the guide grooves limits the maximum separation distance between the two clamping plates 54. The damping rod 52 is a telescopic structure, comprising a damping sleeve and a piston rod. The tail end of the damping sleeve is fixedly connected to the side wall of one of the clamping plates 54. The interior of the damping sleeve is filled with damping oil or... High-pressure gas, one end of the piston rod is slidably inserted into the inside of the damping sleeve and sealed with the inner wall of the damping sleeve, the other end of the piston rod extends out of the damping sleeve and is fixedly connected to the side wall of another clamping plate 54, there are several connecting rods 6, the several connecting rods 6 are evenly distributed in a ring array along the outer circumference of the fixing ring 3, the end of each connecting rod 6 is connected to the outer plate 4 and the disassembly mechanism 5, the plate surfaces of all the outer plates 4 are in the same vertical plane or are parallel to the axis of the rotating rod 1, to ensure that all the clamped earphone shells 7 are in the same radius of rotation when rotating;

[0038] Both clamping plates 54 have contoured clamping grooves on their adjacent side walls that conform to the outer contour of the earphone shell 7. The inner surface of the contoured clamping grooves is covered with a rubber anti-slip pad or a silicone cushioning layer by adhesive. The surface of the rubber anti-slip pad has several anti-slip patterns. A mounting base is fixedly connected to the bottom of the motor 2. The mounting base has a rectangular plate structure and several through bolt mounting holes at its four corners. The motor 2 is fixedly mounted on the spray painting workbench by anchor bolts passing through the bolt mounting holes. The output shaft of the motor 2 is connected to the rotating rod 1 by a coupling. Power transmission is achieved by fully welding the outer plate 4 and the connecting rod 6 together or by integral molding. The back of the fixing frame 51 is fastened to the surface of the outer plate 4 by countersunk screws. The fixing frame 51 has countersunk holes at the fixed position for the countersunk screws to be inserted. The end of the rotating rod 1 away from the motor 2 is coaxially fixedly connected to a rotating shaft head. An auxiliary support bearing is rotatably connected to the outer circumference of the rotating shaft head. The outer ring of the auxiliary support bearing is fixedly installed on the auxiliary support frame. The auxiliary support frame is used to limit the top of the rotating rod 1 and prevent the rotating rod 1 from radially jumping when rotating at high speed.

[0039] The implementation principle of this application embodiment is as follows: The rotating clamp is composed of a rotating rod 1, a fixed ring 3, and an outer plate 4. Under the action of the motor 2, the rotating rod 1 is rotated, thereby causing the outer plate 4 to rotate. Under the action of the disassembly mechanism 5, the earphone shell 7 is disassembled and clamped.

[0040] First, the operator starts motor 2, causing it to drive rotating rod 1 to rotate. Then, rotating rod 1 causes fixed ring 3 to rotate, causing the outer plate 4, which is fixed to the outside of fixed ring 3, to rotate as well, thus stabilizing the system and allowing the sprayer to spray the earphone shell 7 onto the fixture.

[0041] After the spraying is completed, the operator moves the two clamping plates 54 in the disassembly mechanism 5 at the top of the connecting rod 6 to each other, so that the spring 53 and damping rod 52 in the fixed frame 51 are stressed and stretched. At this time, the clamping plates 54 are released from the clamping of the earphone shell 7, allowing the earphone shell 7 to be disassembled.

[0042] Then, after disassembly, the operator releases the force applied to the clamping plate 54, thereby allowing the damping rod 52 and spring 53 to apply force, causing the two clamping plates 54 to move closer together, thus awaiting the next clamping. The implementation principle of this embodiment is as follows: the rotating clamp consists of a rotating rod 1, a fixed ring 3, and an outer plate 4. Under the action of the motor 2, the rotating rod 1 rotates, thereby causing the outer plate 4 to rotate. Under the action of the disassembly mechanism 5, the earphone shell 7 is disassembled and clamped.

[0043] First, the operator starts motor 2, causing it to drive rotating rod 1 to rotate. Then, rotating rod 1 causes fixed ring 3 to rotate, causing the outer plate 4, which is fixed to the outside of fixed ring 3, to rotate as well, thus stabilizing the system and allowing the sprayer to spray the earphone shell 7 onto the fixture.

[0044] After the spraying is completed, the operator moves the two clamping plates 54 in the disassembly mechanism 5 relative to each other, so that the spring 53 and damping rod 52 in the fixed frame 51 are subjected to force, thereby stretching them. At this time, the clamping plates 54 are released from the clamping of the earphone shell 7, allowing the earphone shell 7 to be disassembled.

[0045] Then, after disassembly, the operator releases the force applied to the clamping plate 54, thereby allowing the damping rod 52 and spring 53 to apply force, causing the two clamping plates 54 to move closer to each other, thus waiting for the next clamping.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary clamp for spraying in-ear headphones, comprising a motor (2) and a rotating rod (1) coaxially fixedly connected to the output end of the motor (2), wherein a fixing ring (3) is fixedly sleeved on the outer circumferential surface of the rotating rod (1), a connecting rod (6) is fixedly connected radially to the outer circumferential surface of the fixing ring (3), and an outer plate (4) is fixedly connected to one end of the connecting rod (6) away from the fixing ring (3); Its features are, A disassembly mechanism (5) for clamping the earphone shell (7) is fixedly installed on the side wall of the outer plate (4) away from the connecting rod (6); The disassembly mechanism (5) includes a fixed frame (51) fixedly connected to the surface of the outer plate (4). The fixed frame (51) is constructed as a rectangular frame structure with a accommodating space. The accommodating space inside the fixed frame (51) is provided with two clamping plates (54) arranged opposite to each other. The two clamping plates (54) are connected to the inner wall of the fixed frame (51) by sliding fit. The two clamping plates (54) can reciprocate linearly moving towards or away from each other along the length direction of the fixed frame (51). A spring (53) and a damping rod (52) are connected together between the inner walls of the opposite sides of the two clamping plates (54). The two ends of the spring (53) are fixedly connected to the opposite side walls of the two clamping plates (54).

2. The rotary clamp for spraying coating of in-ear headphones according to claim 1, characterized in that, The spring (53) is in a naturally contracted or pre-tightened state to apply a pulling force to the two clamping plates (54) to bring them closer together. The damping rod (52) is located on the side of the spring (53) and is parallel to the spring (53). The two ends of the damping rod (52) are also fixedly connected to the opposite side walls of the two clamping plates (54) to provide motion buffer when the spring (53) drives the clamping plates (54) to reset.

3. The rotary clamp for spraying coating of in-ear headphones according to claim 1, characterized in that, The inner top wall and inner bottom wall of the fixed frame (51) are provided with guide grooves along their length direction. The top and bottom surfaces of the two clamping plates (54) are respectively provided with guide sliders that are adapted to the guide grooves. The guide sliders are slidably engaged in the corresponding guide grooves. The sliding stroke of the guide sliders in the guide grooves limits the maximum separation distance between the two clamping plates (54).

4. The rotary fixture for spraying coating of in-ear headphones according to claim 1, characterized in that, The damping rod (52) is a telescopic structure, which includes a damping sleeve and a piston connecting rod. The tail end of the damping sleeve is fixedly connected to the side wall of one of the clamping plates (54). The inside of the damping sleeve is filled with damping oil or high-pressure gas. One end of the piston connecting rod is slidably inserted into the inside of the damping sleeve and sealed with the inner wall of the damping sleeve. The other end of the piston connecting rod extends out of the damping sleeve and is fixedly connected to the side wall of another clamping plate (54).

5. A rotary fixture for spraying coating in-ear headphones according to claim 1, characterized in that, There are several connecting rods (6), and several connecting rods (6) are evenly distributed in a ring array along the outer circumference of the fixed ring (3). The end of each connecting rod (6) is connected to an outer plate (4) and a disassembly mechanism (5). The surfaces of all outer plates (4) are in the same vertical plane or parallel to the axis of the rotating rod (1) to ensure that all the clamped earphone shells (7) are in the same radius of rotation when rotating.

6. A rotary fixture for spraying coating in-ear headphones according to claim 1, characterized in that, The two clamping plates (54) have contoured clamping grooves on their side walls that are close to each other, which are adapted to the outer contour of the earphone shell (7). The inner wall surface of the contoured clamping groove is covered with a rubber anti-slip pad or a silicone buffer layer by an adhesive. The surface of the rubber anti-slip pad is provided with several anti-slip textures to increase the friction when in contact with the earphone shell (7).

7. A rotary fixture for spraying coating in-ear headphones according to claim 1, characterized in that, A mounting base is fixedly connected to the bottom of the motor (2). The mounting base is a rectangular plate structure. Several through bolt mounting holes are opened at the four corners of the mounting base. The motor (2) is fixedly installed on the spraying workbench by anchor bolts passing through the bolt mounting holes. The output shaft of the motor (2) and the rotating rod (1) are connected by a coupling to realize power transmission.

8. A rotary fixture for spraying coating in-ear headphones according to claim 1, characterized in that, The outer plate (4) and the connecting rod (6) are fixedly connected by full welding to ensure structural strength, or the outer plate (4) and the connecting rod (6) are integrally formed and manufactured. The back of the fixing frame (51) is fastened to the surface of the outer plate (4) by countersunk screws, and the fixing frame (51) has countersunk holes for countersunk screws to be inserted at the fixed position.

9. A rotary fixture for spraying coating in-ear headphones according to claim 1, characterized in that, The end of the rotating rod (1) away from the motor (2) is coaxially fixedly connected to a rotating shaft head. An auxiliary support bearing is rotatably connected to the outer circumferential surface of the rotating shaft head. The outer ring of the auxiliary support bearing is fixedly installed on the auxiliary support frame. The auxiliary support frame is used to limit the top of the rotating rod (1) to prevent the rotating rod (1) from radially jumping when it rotates at high speed.

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