Clamp

Abstract

The invention provides a clamp which comprises a left clamping arm, a right clamping arm and an elastic element, and the left clamping arm and the right clamping arm form a clamping nozzle; accommodating grooves for accommodating elastic elements are formed in the sides, deviating from the clamping nozzle, of the left clamping arm and the right clamping arm; the containing groove comprises a groove bottom wall, a first groove side wall and a second groove side wall, wherein the first groove side wall and the second groove side wall are located on the two sides of the groove bottom wall. And the first groove side wall and the second groove side wall are configured in a manner that when the first groove side wall and the second groove side wall are placed on the horizontal plane, the projection of the gravity center of the clamp on the horizontal plane is located outside the accommodating groove. Compared with the prior art, due to the fact that the projection of the gravity center of the clamp on the horizontal plane is located outside the containing groove, the clamp cannot be erected on the platform, the clamping column of the clamp taking device can stretch into the operation groove conveniently, and then the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a clamp, and in particular to a clamp used in the metal surface treatment industry, such as electroplating, electrophoresis, oxidation spraying, polishing and other process treatments on aluminum profiles. Background Art

[0002] The oxidation clamp usually includes a left clamp arm, a right clamp arm and a reset elastic element. The left clamp arm and the right clamp arm are provided with an operating groove that matches the clamp remover. The clamp remover is provided with a clamping column that matches the operating groove. When the clamping column is extended into the operating groove, the oxidation clamp can be opened by the clamp remover. However, the side walls of the left clamp arm and the right clamp arm of the existing oxidation clamp that are away from the clamping mouth are usually flat. Such a configuration makes it easy for the oxidation clamp to stand upright on the platform, which is not conducive to the clamping column of the clamp remover extending into the operating groove, thereby reducing work efficiency.

[0003] In view of the above problems, it is necessary to provide a new clamp to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a clamp, which is configured such that when the first groove side wall and the second groove side wall are placed on a horizontal plane, the projection of the center of gravity of the clamp on the horizontal plane is located outside the receiving groove. This arrangement makes it difficult for the clamp to stand upright on a platform, thereby facilitating the extension of the clamping column of the clamp remover into the operating groove, thereby improving work efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides a clamp, comprising a left clamp arm, a right clamp arm and an elastic element, wherein the left clamp arm and the right clamp arm constitute a clamping mouth; a receiving groove for receiving the elastic element is provided on the side of the left clamp arm and the right clamp arm away from the clamping mouth; the receiving groove comprises a groove bottom wall and a first groove side wall and a second groove side wall located on both sides of the groove bottom wall; wherein the first groove side wall and the second groove side wall are constructed as follows: when the first groove side wall and the second groove side wall are placed on a horizontal plane, the projection of the center of gravity of the clamp on the horizontal plane is located outside the receiving groove.

[0006] As a further improvement of the present invention, the first groove side wall has a first outer surface facing away from the accommodating groove, and the second groove side wall has a second outer surface facing away from the accommodating groove, and a reference area is between the first outer surface and the second outer surface; when the first groove side wall and the second groove side wall are placed on a horizontal plane, the projection of the center of gravity of the clamp on the horizontal plane is located outside the reference area.

[0007] As a further improvement of the present invention, the projection of the first groove sidewall on the second groove sidewall is located inside the second groove sidewall or the projection of the second groove sidewall on the first groove sidewall is located inside the first groove sidewall.

[0008] As a further improvement of the present invention, the first groove side wall has a first end surface away from the groove bottom wall; the cross-sectional curve of the first end surface along the thickness direction of the first groove side wall is a convex arc.

[0009] As a further improvement of the present invention, the first groove side wall has a first end surface away from the groove bottom wall; the cross-sectional curve of the first end surface along the length direction of the first groove side wall is a convex arc.

[0010] As a further improvement of the present invention, the second groove side wall has a second end surface away from the groove bottom wall; the cross-sectional curve of the second end surface along the thickness direction of the second groove side wall is a convex arc.

[0011] As a further improvement of the present invention, the second groove side wall has a second end surface away from the groove bottom wall; the cross-sectional curve of the second end surface along the length direction of the second side wall is a convex arc.

[0012] As a further improvement of the present invention, the left clamp arm and the right clamp arm both include a main body, a pivoting portion located on one side of the main body, and a clamping portion located on the other side of the main body; the accommodating groove is at least partially located on the main body.

[0013] As a further improvement of the present invention, the pivoting portion includes a first pivoting wall and a second pivoting wall arranged opposite to the first pivoting wall; the outer contour line of at least one of the first pivoting wall and the second pivoting wall is a convex arc.

[0014] As a further improvement of the present invention, a receiving groove is formed between the first pivot wall and the second pivot wall; the elastic element is partially received in the receiving groove.

[0015] As a further improvement of the present invention, at least one of the left clamping arm and the right clamping arm is provided with a drainage hole.

[0016] As a further improvement of the present invention, the left clamp arm and the right clamp arm both include a main body, a pivoting portion located on one side of the main body, and a clamping portion located on the other side of the main body, and the drainage hole is provided in the main body.

[0017] As a further improvement of the present invention, the drainage hole includes a first drainage hole; the first drainage hole is connected to the accommodating groove in the thickness direction of the main body.

[0018] As a further improvement of the present invention, the first liquid drainage hole is arranged on the first groove side wall or the second groove side wall, and passes through the first groove side wall or the second groove side wall.

[0019] As a further improvement of the present invention, the main body is provided with a supporting arm; the supporting arm of the left clamp arm cooperates with the supporting arm of the right clamp arm to limit the minimum opening angle of the clamp; wherein the drainage hole includes a second drainage hole, and at least one of the supporting arm of the left clamp arm and the supporting arm of the right clamp arm is provided with the second drainage hole.

[0020] As a further improvement of the present invention, the main body is provided with a supporting arm; the supporting arm of the left clamp arm cooperates with the supporting arm of the right clamp arm to limit the minimum opening angle of the clamp; wherein the drainage hole includes a second drainage hole, the supporting arm of the left clamp arm is provided with a left half groove, and the supporting arm of the right clamp arm is provided with a right half groove; the left half groove and the right half groove together constitute the second drainage hole.

[0021] As a further improvement of the present invention, the main body is further provided with an operating groove; the second liquid discharge hole passes through the supporting arm of the left clamp arm or the supporting arm of the right clamp arm, and is communicated with the operating groove.

[0022] The beneficial effect of the present invention is that the clamp of the present invention is constructed so that when the first groove side wall and the second groove side wall are placed on a horizontal plane, the projection of the center of gravity of the clamp on the horizontal plane is located outside the receiving groove. This arrangement makes it difficult for the clamp to stand upright on the platform, thereby facilitating the extension of the clamping column of the clamp remover into the operating groove, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the clamp of the present invention.

[0024] Figure 2 yes Figure 1 A perspective schematic diagram of a second angle of the clamp shown.

[0025] Figure 3 yes Figure 1 A perspective schematic diagram of the clamp shown at a third angle.

[0026] Figure 4 yes Figure 1 A perspective view of the clamp when open is shown.

[0027] Figure 5 yes Figure 1 The three-dimensional schematic diagram of the clamp after removing the elastic element is shown.

[0028] Figure 6 yes Figure 1 Top view of the fixture shown. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See also Figure 1 , Figure 2 as well as Figure 3 As shown, the present invention discloses a clamp 100, comprising a left clamp arm 10, a right clamp arm 20 and an elastic element 30, wherein the left clamp arm 10 and the right clamp arm 20 form a clamping mouth 40. A receiving groove 50 for receiving the elastic element 30 is provided on the side of the left clamp arm 10 and the right clamp arm 20 away from the clamping mouth 40. Figure 5 as well as Figure 1 , Figure 3 As shown, the receiving groove 50 includes a groove bottom wall 51 and a first groove side wall 52 and a second groove side wall 53 located on both sides of the groove bottom wall 51. The first groove side wall 52 and the second groove side wall 53 are configured such that when the first groove side wall 52 and the second groove side wall 53 are placed on a horizontal plane, the projection of the center of gravity of the clamp 100 on the horizontal plane is located outside the receiving groove 50. Such a configuration makes it impossible for the clamp 100 to stand upright on a platform, thereby facilitating the cooperation of a clamp remover with the clamp 100, especially facilitating the cooperation of a pneumatic clamp remover with the clamp 100, thereby improving work efficiency.

[0031] Preferably, the first groove side wall 52 has a first outer surface 521 away from the receiving groove 50, and the second groove side wall 53 has a second outer surface 531 away from the receiving groove 50. The first outer surface 521 and the second outer surface 531 are between the reference area. When the first groove side wall 52 and the second groove side wall 53 are placed on a horizontal plane, the projection of the center of gravity of the clamp 100 on the horizontal plane is located outside the reference area. Such a configuration further ensures that the clamp 100 cannot stand upright on the platform, thereby facilitating the cooperation of the clamp remover with the clamp 100, especially facilitating the cooperation of the pneumatic clamp remover with the clamp 100, thereby improving work efficiency.

[0032] Specifically, see Figure 6 As shown, the projection of the first groove sidewall 52 on the second groove sidewall 53 is located inside the second groove sidewall 53. Of course, it can be understood that in other embodiments, it can also be configured that: the projection of the second groove sidewall 53 on the first groove sidewall 52 is located inside the first groove sidewall 52.

[0033] Preferably, see Figure 5As shown, the first groove side wall 52 has a first end surface 522 away from the groove bottom wall 51. The cross-sectional curve of the first end surface 522 along the thickness direction HH of the first groove side wall 52 is a convex arc. In this way, when the first groove side wall 52 is placed on a horizontal plane, the contact between the first groove side wall 52 and the horizontal plane in the thickness direction HH is point contact or approximately point contact, thereby ensuring that the clamp 100 cannot stand upright on the platform.

[0034] Preferably, the cross-sectional curve of the first end surface 522 along the length direction LL of the first groove side wall 52 is a convex arc. In this way, when the first groove side wall 52 is placed on a horizontal plane, the contact between the first groove side wall 52 and the horizontal plane in the length direction LL is point contact or approximately point contact, thereby further ensuring that the clamp 100 cannot stand upright on the platform.

[0035] Preferably, see Figure 5 As shown, the second groove side wall 53 has a second end surface 532 away from the groove bottom wall 51. The cross-sectional curve of the second end surface 532 along the thickness direction HH of the second groove side wall 53 is a convex arc. In this way, when the second groove side wall 53 is placed on a horizontal plane, the contact between the second groove side wall 53 and the horizontal plane in the thickness direction HH is point contact or approximately point contact, thereby ensuring that the clamp 100 cannot stand upright on the platform.

[0036] Preferably, the cross-sectional curve of the second end surface 532 along the length direction LL of the second side wall 53 is a convex arc. In this way, when the second groove side wall 53 is placed on a horizontal plane, the contact between the second groove side wall 53 and the horizontal plane in the length direction LL is point contact or approximate point contact, thereby further ensuring that the clamp 100 cannot stand upright on a platform.

[0037] Preferably, see Figure 1 as well as Figure 2 As shown, the left clamp arm 10 and the right clamp arm 20 both include a main body 61, a pivoting portion 62 located on one side of the main body 61, and a clamping portion 63 located on the other side of the main body 61. The left clamp arm 10 is pivotally mounted on the right clamp arm 20 via a pivot 70. The receiving slot 50 is at least partially located on the main body 61. For further information, please refer to Figure 5As shown, the pivoting portion 62 includes a first pivoting wall 621 and a second pivoting wall 622 arranged opposite to the first pivoting wall 621. The outer contour line of at least one of the first pivoting wall 621 and the second pivoting wall 622 is a convex arc. In this way, the pivoting portion 62 is in point contact or approximately point contact with the horizontal plane, thereby further ensuring that the clamp 100 cannot stand upright on the platform. A receiving groove 623 is formed between the first pivoting wall 621 and the second pivoting wall 622. The elastic element 30 is partially accommodated in the receiving groove 623. In this embodiment, the elastic element 30 is a torsion spring. The main body of the torsion spring is accommodated in the receiving groove 623, and the pivot 70 passes through the main body of the torsion spring. The elastic arm of the torsion spring is accommodated in the receiving groove 50. When the clamp 100 is opened by an external force, the elastic element 30 is elastically deformed under the action of the main body 61. When the external force is removed, the clamp 100 is reset under the action of the elastic element.

[0038] Of course, it is understandable that in other embodiments, the left clamp arm 10 and the right clamp arm 20 may not be provided with the pivoting portion 62. At this time, the elastic arm of the elastic element 30 is received in the receiving groove 50 and fixed in the receiving groove 50. For example, the elastic arm of the elastic element 30 is fixed in the receiving groove 50 by screws, or the elastic arm part of the elastic element 30 is embedded in the left clamp arm 10 and the right clamp arm 20 by an integral injection molding method.

[0039] Preferably, at least one of the left clamp arm 10 and the right clamp arm 20 is provided with a drain hole to facilitate the metal surface treatment liquid to be discharged from the slot of the clamp 100. At the same time, the metal surface treatment liquid remaining in the slot of the clamp 100 can also be easily washed away, thereby effectively reducing the corrosion of the metal surface treatment liquid to the clamp 100, extending the service life of the clamp 100, saving production costs and protecting the environment.

[0040] Preferably, the drain hole is disposed on the main body 61. With such a configuration, the metal surface treatment liquid on the main body 61 can be effectively drained and cleaned.

[0041] Preferably, see Figure 2 , Figure 3 as well as Figure 5 As shown, the drainage hole includes a first drainage hole 601. The first drainage hole 601 is connected to the receiving tank 50 in the thickness direction HH of the main body 61. In this way, the metal surface treatment liquid stored in the receiving tank 50 can be easily drained, and the metal surface treatment liquid in the receiving tank 50 can also be easily rinsed away.

[0042] Further, the first drainage hole 601 is arranged on the first groove side wall 52 or the second groove side wall 53, and penetrates the first groove side wall 52 or the second groove side wall 53 to communicate with the receiving groove 50. Preferably, the first groove side wall 52 and the second groove side wall 53 are both provided with the first drainage hole 601, and the projections of the first drainage hole 601 on the first groove side wall 52 and the first drainage hole 601 on the second groove side wall 53 on the plane perpendicular to the groove side wall thickness direction HH at least partially overlap. Such an arrangement is conducive to the rapid discharge of the metal surface treatment liquid stored in the receiving groove 50. At the same time, such an arrangement is also more convenient to rinse out the metal surface treatment liquid in the receiving groove 50.

[0043] Preferably, see Figure 2 , Figure 3 as well as Figure 4 As shown, the main body 61 is provided with a supporting arm 611. The supporting arm 611 of the left clamp arm 10 cooperates with the supporting arm 611 of the right clamp arm 20 to limit the minimum opening angle of the clamp 100. The drainage hole also includes a second drainage hole 602. At least one of the supporting arm 611 of the left clamp arm 10 and the supporting arm 611 of the right clamp arm 20 is provided with the second drainage hole 602. Such a configuration is conducive to the clamp 100 to quickly discharge the metal surface treatment liquid in the length direction LL, and it is also convenient to rinse off the metal surface treatment liquid.

[0044] Preferably, see Figure 4 As shown, the supporting arm 611 of the left clamp arm 10 is provided with a left half groove 6111, and the supporting arm 611 of the right clamp arm 20 is provided with a right half groove 6112. The left half groove 6111 and the right half groove 6112 together constitute the second liquid discharge hole 602. At this time, the second liquid discharge hole 602 is located in the middle of the supporting arm 611 of the left clamp arm 10 and the supporting arm 611 of the right clamp arm 20, so that the metal surface treatment liquid can be quickly discharged.

[0045] For further information, see Figure 2 , Figure 3 as well as Figure 4 As shown, the main body 61 is also provided with an operating groove 612. The operating groove 612 is used to cooperate with the clamp remover so as to open the clamp 100 through the clamp remover. The clamp remover can be a manual clamp remover or a pneumatic clamp remover. The second liquid discharge hole 602 passes through the abutting arm 611 of the left clamp arm 10 or the abutting arm 611 of the right clamp arm 20, and is connected to the operating groove 610. In this way, the metal surface treatment liquid located in the operating groove 612 can be quickly discharged. At the same time, the metal surface treatment liquid remaining in the operating groove 612 can also be easily rinsed off.

[0046] For further information, see Figure 1 as well as Figure 2 As shown, the clamping portion 63 of the left clamping arm 10 and the clamping portion 63 of the right clamping arm 20 together constitute the clamping nozzle 40. The second liquid discharge hole 602 is connected to the clamping nozzle 40. In this way, the metal surface treatment liquid stored in the operating groove 612 can be quickly discharged through the clamping nozzle 40.

[0047] In summary, since the projection of the center of gravity of the clamp 100 of the present invention on the horizontal plane is located outside the receiving groove 50, the clamp 100 cannot be erected on the platform, which makes it easier for the clamping column of the clamp remover to extend into the operating groove 612, thereby improving work efficiency.

[0048] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A clamp, characterized in that: It comprises a left clamp arm, a right clamp arm and an elastic element, wherein the left clamp arm and the right clamp arm constitute a clamping mouth; a receiving groove for receiving the elastic element is arranged on the side of the left clamp arm and the right clamp arm away from the clamping mouth; the receiving groove comprises a groove bottom wall and a first groove side wall and a second groove side wall located on both sides of the groove bottom wall; wherein the first groove side wall and the second groove side wall are constructed as follows: when the first groove side wall and the second groove side wall are placed on a horizontal plane, the projection of the center of gravity of the clamp on the horizontal plane is located outside the receiving groove.

2. The clamp according to claim 1, characterized in that: The first groove side wall has a first outer surface facing away from the receiving groove, the second groove side wall has a second outer surface facing away from the receiving groove, and a reference area is between the first outer surface and the second outer surface; When the first groove side wall and the second groove side wall are placed on a horizontal plane, the projection of the center of gravity of the clamp on the horizontal plane is located outside the reference area.

3. The clamp according to claim 1, characterized in that: The projection of the first groove sidewall on the second groove sidewall is located inside the second groove sidewall or the projection of the second groove sidewall on the first groove sidewall is located inside the first groove sidewall.

4. The clamp according to claim 1, characterized in that: The first groove side wall has a first end surface away from the groove bottom wall; the cross-sectional curve of the first end surface along the thickness direction of the first groove side wall is a convex arc.

5. The clamp according to claim 1, characterized in that: The first groove side wall has a first end surface away from the groove bottom wall; the cross-sectional curve of the first end surface along the length direction of the first groove side wall is a convex arc.

6. The clamp according to claim 1, characterized in that: The second groove side wall has a second end surface away from the groove bottom wall; the cross-sectional curve of the second end surface along the thickness direction of the second groove side wall is a convex arc.

7. The clamp according to claim 1, characterized in that: The second groove side wall has a second end surface away from the groove bottom wall; the cross-sectional curve of the second end surface along the length direction of the second side wall is a convex arc.

8. The clamp according to claim 1, characterized in that: The left clamp arm and the right clamp arm both include a main body, a pivoting portion located on one side of the main body, and a clamping portion located on the other side of the main body; the accommodating groove is at least partially located on the main body.

9. The clamp according to claim 8, characterized in that: The pivoting portion includes a first pivoting wall and a second pivoting wall arranged opposite to the first pivoting wall; the outer contour line of at least one of the first pivoting wall and the second pivoting wall is a convex arc.

10. The clamp according to claim 9, characterized in that: A receiving groove is formed between the first pivot wall and the second pivot wall; the elastic element is partially received in the receiving groove.

11. The clamp according to claim 1, characterized in that: At least one of the left clamping arm and the right clamping arm is provided with a drainage hole.

12. The clamp according to claim 11, characterized in that: The left clamp arm and the right clamp arm both include a main body, a pivoting portion located at one side of the main body, and a clamping portion located at the other side of the main body, and the drainage hole is arranged on the main body.

13. The clamp according to claim 12, characterized in that: The drainage hole includes a first drainage hole; the first drainage hole is connected to the accommodating groove in the thickness direction of the main body.

14. The clamp according to claim 13, characterized in that: The first liquid drain hole is disposed on the first groove side wall or the second groove side wall and passes through the first groove side wall or the second groove side wall.

15. The clamp according to claim 12, characterized in that: The main body is provided with a supporting arm; the supporting arm of the left clamp arm cooperates with the supporting arm of the right clamp arm to limit the minimum opening angle of the clamp; wherein the drainage hole includes a second drainage hole, and at least one of the supporting arm of the left clamp arm and the supporting arm of the right clamp arm is provided with the second drainage hole.

16. The clamp according to claim 12, characterized in that: The main body is provided with a supporting arm; the supporting arm of the left clamp arm cooperates with the supporting arm of the right clamp arm to limit the minimum opening angle of the clamp; wherein the drainage hole includes a second drainage hole, the supporting arm of the left clamp arm is provided with a left half groove, and the supporting arm of the right clamp arm is provided with a right half groove; the left half groove and the right half groove together constitute the second drainage hole.

17. The clamp according to claim 15 or 16, characterized in that: The main body is also provided with an operating groove; the second liquid discharge hole penetrates through the supporting arm of the left clamp arm or the supporting arm of the right clamp arm, and is communicated with the operating groove.

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