Tensioning device and grinding equipment
By designing tensioning devices and grinding equipment, the frequent replacement of fixtures caused by different tolerances during the grinding process of headphone shells is solved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202422036305.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In the prior art, the injection molded earphone shell needs to be frequently replaced due to different dimensional tolerances in the grinding process, which affects work efficiency and increases production costs.
A tensioning device is designed, including a base and a tensioning mechanism, adjusting the spacing between the first clamping arm and the second clamping arm through the adjustment member, adapting to the tolerances of different batches of products, and combining grinding equipment to achieve product positioning and grinding.
The adaptation of products in different batches is achieved, the frequency of fixture replacement is reduced, the working efficiency is improved and the production cost is reduced.
Smart Images
Figure CN223160732U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a jig device, in particular to a tensioning device and a grinding device. Background Art
[0002] A grinding device processes the surface of a product by grinding it to obtain a smooth surface. For example, during the production of the shell of a Bluetooth headset, the headset shell is first injection-molded, and then ground, painted, and coated with a protective film. Among them, during the grinding process, the headset shell needs to be first positioned and fixed in a jig, and then the grinding head of the grinding device rotates uniformly to grind the surface of the headset shell to make it smooth to meet the requirements of the next process.
[0003] However, the sizes of the injection-molded headset shells in different cavities are different, that is, the so-called tolerance problem. As a result, a lot of jigs need to be configured for the positioning of the injection-molded headset shells with different tolerances during the grinding process, and frequent matching is required during use to find a suitable jig, which is very inconvenient to use. This not only affects work efficiency, but also requires a large amount of production costs to manufacture positioning jigs of different sizes. Therefore, it greatly troubles enterprise managers. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a tensioning device, which not only has a simple structure and convenient operation, but also can adapt to the problem of different tolerances of products in different batches, greatly saving production costs.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A tensioning device includes a base and a tensioning mechanism installed on the base. The product is assisted in positioning through the tensioning mechanism. The tensioning mechanism includes a base installed on the base, and a first clamping arm and a second clamping arm that are connected to the base and arranged at intervals. The tensioning device further includes a first adjusting member for increasing the distance between the first clamping arm and the second clamping arm, and a second adjusting member for reducing the distance between the first clamping arm and the second clamping arm.
[0007] Further, the first adjusting member has a first adjusting portion, a first abutting portion, and a first screwing portion. At least a part of the first screwing portion is provided with a first external thread. The first clamping arm is provided with a first through hole corresponding to the first adjusting member, and the second clamping arm is provided with a first screwing hole corresponding to the first adjusting member. The first screwing hole is provided with a first internal thread that matches the first external thread of the first screwing portion. The first adjusting portion of the first adjusting member is disposed within the first through hole, the first screwing portion is screwed into the first screwing hole, the first abutting portion is located between the first clamping arm and the second clamping arm, and the diameter of the first abutting portion is greater than the diameter of the first adjusting portion.
[0008] Further, in the length direction of the first adjusting member, the thickness of the first abutting portion is less than the distance between the first clamping arm and the second clamping arm.
[0009] Further, the second adjusting member has a second adjusting portion and a second screwing portion. At least a part of the second screwing portion is provided with a second external thread. The first clamping arm is provided with a second through hole corresponding to the second adjusting member, and the second clamping arm is provided with a second screwing hole corresponding to the second adjusting member. The second screwing hole is provided with a second internal thread that matches the second external thread of the second screwing portion. The second screwing portion of the second adjusting member passes through the second through hole, the second screwing portion is screwed into the second screwing hole, the diameter of the second adjusting portion is greater than the diameter of the second screwing portion, and the diameter of the second adjusting portion is greater than the diameter of the second through hole.
[0010] Further, the distance between the first clamping arm and the second clamping arm at the open end is 0.2 mm.
[0011] Further, the first clamping arm and the second clamping arm are arranged parallel to each other.
[0012] Further, positioning protrusions for cooperating with the internal buckling structure of the product are convexly provided at the ends of the first clamping arm and the second clamping arm.
[0013] Further, the base is concavely provided with a positioning groove for fixing the tensioning mechanism.
[0014] Further, a first installation groove is provided through the positioning groove in the base, and a second installation groove communicating with the first installation groove is concavely provided at the bottom of the tensioning mechanism.
[0015] A grinding device includes the above-mentioned tensioning device and further includes at least one grinding head that rotates at a constant speed to grind the outer surface of the product installed on the tensioning device.
[0016] The tensioning device provided by the present utility model not only has a simple structure and convenient operation, but also adapts to the problems of different tolerances in different batches of products by adjusting the distance between the first clamping arm and the second clamping arm, greatly saving the production cost. Description of the Drawings
[0017] Figure 1 Fig. is a perspective view of the tensioning device of an assembled product of the present utility model.
[0018] Figure 2 For Figure 1 Fig. shows a perspective exploded view of the tensioning device of the assembled product.
[0019] Figure 3 For Figure 1 Fig. shows a side view of the tensioning device of the assembled product.
[0020] Figure 4 For Figure 1 Fig. shows a sectional view of the tensioning device of the assembled product.
[0021] Figure 5 For Figure 4 Fig. shows a partial enlarged view of part A of the tensioning device.
[0022] Figure 6 Fig. is a perspective view of a tensioning device of the present utility model.
[0023] Figure 7 For Figure 6 Fig. shows a side view of the tensioning device.
[0024] Figure 8 For Figure 6 Fig. shows a perspective view of the tensioning unit of the tensioning device.
[0025] Figure 9 For Figure 8 Fig. shows a perspective view of the tensioning unit from another angle.
[0026] Figure 10 Fig. is a perspective view of the first adjusting member of the present utility model.
[0027] Figure 11 Fig. is a perspective view of the second adjusting member of the present utility model.
[0028] Figure 12 Fig. is a perspective view of the product of the present utility model. Detailed Embodiments
[0029] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0030] The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc. in the description and claims of the present utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the sake of clarity of the technical solution and convenience of description, and thus should not be construed as a limitation to the present application.
[0031] Please refer to Figures 1-12 , the present utility model discloses a tensioning device, which includes a base 10 and a tensioning mechanism 20 installed on the base 10, and the product 100 is assisted in positioning through the tensioning mechanism 20.
[0032] Please refer to Figures 1-9 , the tensioning mechanism 20 includes a base 24 installed on the base 10, and a first clamping arm 21 and a second clamping arm 22 which are connected to the base 24 and arranged at intervals. The tensioning device further includes a first adjusting member 30 for increasing the distance 23 between the first clamping arm 21 and the second clamping arm 22, and a second adjusting member 40 for reducing the distance 23 between the first clamping arm 21 and the second clamping arm 22.
[0033] Please refer to Figure 4 and Figure 10 , the first adjusting member 30 has a first adjusting portion 31, a first abutting portion 32 and a first screwing portion 33. At least part of the first screwing portion 33 is provided with a first external thread 331. The first clamping arm 21 is provided with a first through hole 211 corresponding to the first adjusting portion 31 of the first adjusting member 30, and the second clamping arm 22 is provided with a first screwing hole 221 corresponding to the first screwing portion 33 of the first adjusting member 30. The first screwing hole 221 is provided with a first internal thread that matches the first external thread 331 of the first screwing portion 33. The first adjusting portion 31 of the first adjusting member 30 is arranged in the first through hole 211, the first screwing portion 33 is screwed in the first screwing hole 221, and the first abutting portion 32 is located between the first clamping arm 21 and the second clamping arm 22. More specifically, the diameter of the first abutting portion 32 is larger than the diameter of the first adjusting portion 31. The first adjusting portion 31 is recessed with a first internal hexagonal interface 311.
[0034] In this embodiment, when it is necessary to increase the distance 23 between the first clamping arm 21 and the second clamping arm 22, an inner hexagon wrench is inserted into the first inner hexagon interface 311 of the first adjusting part 31 and rotated counterclockwise to move the first adjusting member 30 away from the second clamping arm 22. At the same time, the first abutting part 32 pushes the first clamping arm 21 away from the second clamping arm 22, so as to increase the distance 23 between the first clamping arm 21 and the second clamping arm 22. Similarly, rotating the first adjusting member 30 clockwise makes it move closer to the second clamping arm 22, and finally the distance 23 between the first clamping arm 21 and the second clamping arm 22 returns to the initial state.
[0035] Please refer to Figure 4 and Figure 5 , in the length direction of the first adjusting member 30, the thickness of the first abutting part 32 is less than the distance 23 between the first clamping arm 21 and the second clamping arm 22.
[0036] Please refer to Figure 4 and Figure 11 , the second adjusting member 40 has a second adjusting part 41 and a second screwing part 42. At least part of the second screwing part 42 is provided with a second external thread 421. The first clamping arm 21 is provided with a second through hole 212 corresponding to the second screwing part 42 of the second adjusting member 40, and the second clamping arm 22 is provided with a second screwing hole 222 corresponding to the second screwing part 42 of the second adjusting member 40. The second screwing hole 222 is provided with a second internal thread that matches the second external thread 421 of the second screwing part 42. The second screwing part 42 of the second adjusting member 40 passes through the second through hole 212, and the second external thread 421 of the second screwing part 42 is screwed into the second screwing hole 222, and the second adjusting part 41 abuts against the first clamping arm 21. More specifically, the diameter of the second adjusting part 41 is larger than the diameter of the second screwing part 42, and the diameter of the second adjusting part 41 is larger than the diameter of the second through hole 212. The second adjusting part 41 is recessed with a second inner hexagon interface 411. In this embodiment, the screwing part 42 located in the second through hole 212 is not provided with the second external thread 421 and the screwing part 42 located in the second through hole 212 does not interfere with the second through hole 212.
[0037] In this embodiment, when it is necessary to reduce the distance 23 between the first clamping arm 21 and the second clamping arm 22, an Allen wrench is inserted into the second Allen interface 411 of the second adjusting part 41 and rotated clockwise to move the second adjusting member 40 towards the second clamping arm 22. At the same time, the second adjusting part 41 pushes the first clamping arm 21 towards the second clamping arm 22 to reduce the distance 23 between the first clamping arm 21 and the second clamping arm 22. Similarly, rotate the first adjusting member 30 counterclockwise to move it away from the second clamping arm 22, and finally the distance 23 between the first clamping arm 21 and the second clamping arm 22 is restored to the initial state.
[0038] Please continue to refer to Figure 4 and Figure 5 , the distance between the first clamping arm 21 and the second clamping arm 22 at the open end is 0.2 mm. More specifically, in this embodiment, the first clamping arm 21 and the second clamping arm 22 are arranged parallel to each other and in the same horizontal direction, and the distance between the first clamping arm 21 and the second clamping arm 22 is 0.2 mm.
[0039] Please refer to Figure 4 , Figure 8 and Figure 12 , positioning protrusions for cooperating with the internal snap structure 101 of the product 100 are convexly provided at the ends of the first clamping arm 21 and the second clamping arm 22. When the distance 23 between the first clamping arm 21 and the second clamping arm 22 is increased, the positioning protrusions expand outwards and are engaged at the internal snap structure 101 of the product 100 to fix the product 100.
[0040] Please refer to Figure 1 and Figure 2 , a positioning groove 11 for fixing the base 24 of the tensioning mechanism 20 is recessed on the upper surface of the base 10. The base 24 is engaged in the positioning groove 11 to fix the tensioning mechanism 20.
[0041] Furthermore, please refer to Figure 4 and Figure 9 , a first installation groove 12 is formed through the positioning groove 11 in the base 10, and a second installation groove 25 communicating with the first installation groove 12 is recessed at the bottom of the tensioning mechanism 20. The fixing bolt further fixes the tensioning mechanism 20 on the base 10 through the first installation groove 12 and the second installation groove 25.
[0042] When the tensioning device of the present utility model is in use, the tensioning device is in an initial state, that is, neither the first clamping arm 21 nor the second clamping arm 22 is stressed. When the opening size of the product 100 in this batch is too small, by rotating the second adjusting member 40 clockwise, the second adjusting portion 41 abuts against the first clamping arm 21 and drives the first clamping arm 21 to move towards the second clamping arm 22, so that the distance 23 between the first clamping arm 21 and the second clamping arm 22 is reduced to fit the opening of the product 100 in this batch, and then the product 100 is fixed on the tensioning mechanism 20; when the opening size of the product 100 in the next batch is too large, first rotate the second adjusting member 40 counterclockwise until the first clamping arm 21 and the second clamping arm 22 return to the initial state, and then rotate the first adjusting member 30 counterclockwise, so that the first abutting portion 32 abuts against the first clamping arm 21 and drives the first clamping arm 21 to move away from the second clamping arm 22, so that the distance 23 between the first clamping arm 21 and the second clamping arm 22 is increased to fit the opening of the product 100 in this batch, and then the product 100 is fixed on the tensioning mechanism 20. The above operations are adjusted according to the tolerance dimensions of the openings of the products 100 in different batches to fit the products 100 with different tolerances in different batches.
[0043] The present utility model also discloses a grinding device, which includes the above-mentioned tensioning device and at least one grinding head. The grinding head rotates at a constant speed to grind the outer surface of the product 100 installed on the tensioning device.
[0044] The tensioning device of the present utility model not only has a simple structure and is convenient to operate, but also adapts to the problem of different tolerances of products in different batches by adjusting the distance 23 between the first clamping arm 21 and the second clamping arm 22, greatly saving the production cost. The grinding device of the present utility model positions the product 100 by means of the tensioning device and performs all-round grinding on the outer surface of the product 100, fundamentally solving the problem that the original fixture has poor positioning, resulting in loosening of the product 100 during grinding and affecting the work efficiency.
[0045] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims
1. A tensioning device, comprising a base and a tensioning mechanism mounted on the base, and the product is assisted in positioning through the tensioning mechanism, characterized in that, The tensioning mechanism includes a base installed on the base, and a first clamping arm and a second clamping arm that are connected to the base and arranged at intervals. The tensioning device further includes a first adjusting member for increasing the distance between the first clamping arm and the second clamping arm, and a second adjusting member for reducing the distance between the first clamping arm and the second clamping arm.
2. The tensioning device according to claim 1, characterized in that, The first adjusting member has a first adjusting portion, a first abutting portion, and a first screwing portion. At least part of the first screwing portion is provided with a first external thread. The first clamping arm is provided with a first through hole corresponding to the first adjusting member, and the second clamping arm is provided with a first screwing hole corresponding to the first adjusting member. The first screwing hole is provided with a first internal thread that matches the first external thread of the first screwing portion. The first adjusting portion of the first adjusting member is arranged in the first through hole, the first screwing portion is screwed in the first screwing hole, the first abutting portion is located between the first clamping arm and the second clamping arm, and the diameter of the first abutting portion is larger than the diameter of the first adjusting portion.
3. The tensioning device according to claim 2, characterized in that, In the length direction of the first adjusting member, the thickness of the first abutting portion is smaller than the distance between the first clamping arm and the second clamping arm.
4. The tensioning device according to claim 2, wherein, The second adjusting member has a second adjusting portion and a second screwing portion. At least part of the second screwing portion is provided with a second external thread. The first clamping arm is provided with a second through hole corresponding to the second adjusting member, and the second clamping arm is provided with a second screwing hole corresponding to the second adjusting member. The second screwing hole is provided with a second internal thread that matches the second external thread of the second screwing portion. The second screwing portion of the second adjusting member passes through the second through hole, the second screwing portion is screwed in the second screwing hole, the diameter of the second adjusting portion is larger than the diameter of the second screwing portion, and the diameter of the second adjusting portion is larger than the diameter of the second through hole.
5. The tensioning device according to claim 1, characterized in that, The distance between the first clamping arm and the second clamping arm at the open end is 0.2 mm.
6. The tensioning device according to claim 5, characterized in that, The first clamping arm and the second clamping arm are arranged parallel to each other.
7. The tensioning device according to claim 1, characterized in that, The ends of the first clamping arm and the ends of the second clamping arm are convexly provided with positioning protrusions for cooperating with the internal buckling structure of the product.
8. The tensioning device according to claim 1, characterized in that, The base is recessed with a positioning groove for fixing the tensioning mechanism.
9. The tensioning device according to claim 8, characterized in that, The base penetrates through the positioning groove to form a first installation groove, and the bottom of the tensioning mechanism is recessed with a second installation groove communicating with the first installation groove.
10. A grinding device, comprising the tensioning device according to any one of claims 1-9, characterized in that, It further includes at least one grinding head, and the grinding head rotates at a constant speed to grind the outer surface of the product installed on the tensioning device.