Clamping device for large-size thin-wall metal plate

Abstract

The clamping device for the large-size thin-wall metal plate comprises a telescopic sleeve, triangular supports are fixedly installed at the two ends of the telescopic sleeve respectively, clamping plates are fixedly installed at the lower ends of the triangular supports, and cavities with three open faces are formed in the opposite faces of the two clamping plates. A plurality of fixed clamping parts are fixedly mounted on the inner bottom wall of the cavity, a plurality of elastic clamping parts are fixedly mounted on the inner top wall of the cavity, the upper and lower positions of the elastic clamping parts and the fixed clamping parts are in one-to-one correspondence, and the opposite ends of the elastic clamping parts and the fixed clamping parts are spherical; and the thin-wall metal plate is clamped between the elastic clamping part and the fixed clamping part. According to the utility model, the thin-wall metal plate can be stably clamped, and the clamping action area is greatly reduced, so that the surface of the thin-wall metal plate can be fully colored.

Description

Technical Field

[0001] This utility model relates to a clamping device for thin plate workpieces, specifically a clamping device for large-sized thin-walled metal plates. Background Technology

[0002] To improve the strength, corrosion resistance, and surface aesthetics of thin-walled metal sheets, chemical coloring treatment is required.

[0003] Because thin-walled metal sheets are characterized by large size, poor rigidity, and thin walls, they may loosen and fall into the anodizing bath if they are not firmly clamped during the coloring process. In order to improve the clamping effect, existing clamping devices generally use surface contact with thin-walled metal sheets. However, due to the excessively large effective area of ​​the clamping device, the clamped part of the thin-walled metal sheet is not colored, resulting in a large area of ​​clamp marks.

[0004] Therefore, a novel clamping device is needed to securely hold thin-walled metal sheets and improve their coloring effect, thereby promoting the application of thin-walled metal sheets in aerospace, biomedicine and other fields. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a clamping device for large-size thin-walled metal plates, which can not only firmly clamp the thin-walled metal plates, but also significantly reduce the clamping area.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A clamping device for large-size thin-walled metal plates includes a telescopic sleeve, with triangular brackets fixedly installed at both ends of the telescopic sleeve, and clamping plates fixedly installed at the lower end of the triangular brackets. The opposing surfaces of the two clamping plates have cavities with three openings.

[0008] The inner bottom wall of the cavity is fixedly installed with multiple fixed clamping parts, and the inner top wall of the cavity is fixedly installed with multiple elastic clamping parts. The upper and lower positions of the elastic clamping parts and the fixed clamping parts correspond one-to-one, and the opposite ends of the elastic clamping parts and the fixed clamping parts are both spherical. The thin-walled metal plate is clamped between the elastic clamping parts and the fixed clamping parts.

[0009] Furthermore, the telescopic sleeve includes a fixed rod and a spring button. Both ends of the fixed rod are slidably sleeved with positioning sleeves that are fixedly connected to the upper end of the triangular bracket. Several positioning holes are opened on the positioning sleeves.

[0010] Both ends of the fixing rod are provided with first cylindrical holes, and a first fixing post is fixedly installed inside the first cylindrical hole;

[0011] The spring button comprises a button cap capable of extending a positioning hole and a first spring sleeved to the outside of the first fixed column, and the bottom of the button cap is fixedly installed with a first cylinder, the upper end of the first fixed column is slidably inserted into the inside of the first cylinder, and the two ends of the first spring are fixedly connected with the inner bottom wall of the first cylinder hole and the lower surface of the first cylinder respectively.

[0012] Further, the top surface of the button cap is a smooth curved surface.

[0013] Further, the elastic clamping part comprises a sleeve fixedly installed on the inner top wall of the cavity and a spherical head capable of extending into or out of the sleeve, and the upper surface of the spherical head is fixedly installed with a second cylinder;

[0014] The inside of the sleeve is fixedly installed with a second fixed column, the lower end of the second fixed column is slidably sleeved into the inside of the second cylinder, and the outside of the second fixed column is sleeved with a second spring, and the two ends of the second spring are fixedly connected with the inner top wall of the sleeve and the upper surface of the second cylinder respectively.

[0015] Further, the fixed clamping part is a spherical convex point welded on the inner bottom wall of the cavity.

[0016] Further, the elastic clamping part and the fixed clamping part are both provided with two rows, wherein: the two rows of elastic clamping parts are evenly and alternately distributed on the inner top wall of the cavity; and the two rows of fixed clamping parts are evenly and alternately distributed on the inner bottom wall of the cavity.

[0017] Further, the fixed clamping part and the elastic clamping part are both left with a gap of 3-5 cm between the rear wall of the cavity.

[0018] Further, the triangular support comprises two long rods, one end of the two long rods is fixedly connected, and the included angle between the two long rods is an obtuse angle.

[0019] The bottom of the long rod is fixedly installed with a vertical short rod, and the short rod is fixedly connected with the upper surface of the clamping plate.

[0020] Further, a lifting ring is fixedly installed on the middle of the fixed rod.

[0021] Compared with the prior art, the utility model has the following technical effects:

[0022] On the one hand, the elastic clamping part and the fixed clamping part are used for stably clamping the thin-wall metal plate, so that the thin-wall metal plate is prevented from loosening from the clamping plate; on the other hand, the end of the elastic clamping part and the fixed clamping part opposite to each other is spherical, so that the elastic clamping part and the fixed clamping part are both in point contact with the upper and lower surfaces of the thin-wall metal plate, the clamping area is reduced, the surface of the thin-wall metal plate is fully and comprehensively colored, the clamp mark is reduced, and the strength, corrosion resistance and surface appearance of the thin-wall metal plate are improved.

[0023] The relative position of the positioning sleeve and the fixed rod can be changed by cooperation of the spring button and the positioning hole, so that the horizontal distance between the two clamping plates is adjusted, different sizes of the thin-wall metal plate are clamped conveniently, and the applicability of the utility model is improved.

[0024] The elastic restoring force of the spring reversely pushes the spherical head, so that the spherical head keeps the downward movement trend and is always close to the upper surface of the thin-wall metal plate, the upward force of the fixed clamping part on the lower surface of the thin-wall metal plate is matched, the thin-wall metal plate is clamped firmly, and the thin-wall metal plate can be effectively prevented from loosening; meanwhile, during the process of clamping or unclamping the thin-wall metal plate, only the outward pulling is needed, and the process is very convenient.

[0025] The upper two rows of the evenly and staggered distributed elastic clamping parts and the lower two rows of the evenly and staggered distributed fixed clamping parts make the upper and lower surfaces of the thin-wall metal plate contact with multiple points, the stress is more uniform, and the thin-wall metal plate is conveniently and stably clamped firmly. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 : the front view structural schematic diagram of the utility model;

[0027] Figure 2 : the side view structural schematic diagram of the utility model;

[0028] Figure 3 : the top view structural schematic diagram of the utility model;

[0029] Figure 4 : the local structural schematic diagram of the positioning sleeve of the utility model;

[0030] Figure 5 : the local structural schematic diagram of the triangular support frame of the utility model;

[0031] Figure 6 : the structural schematic diagram of the spring button of the utility model;

[0032] Figure 7 : the structural schematic diagram of the clamping plate of the utility model;

[0033] Figure 8 : the structural schematic diagram of the lifting ring of the utility model.

[0034] In the drawing: 1, clamping plate; 2, triangular support frame; 3, positioning sleeve; 4, fixed rod; 41, first cylindrical hole; 42, first fixed column; 5, spring button; 51, button cap; 52, first cylinder; 53, first spring; 6, positioning hole; 7, lifting ring; 8, elastic clamping part; 81, second fixed column; 82, second spring; 83, spherical head; 84, second cylinder; 9, fixed clamping part. DETAILED DESCRIPTION

[0035] The specific content of the utility model is further explained and described in detail in combination with the embodiments.

[0036] As Figures 1-7 shown, a clamping device for large-size thin-wall metal plate, including telescopic sleeve, telescopic sleeve two ends are fixedly installed with triangular support 2 respectively, triangular support 2 lower end is fixedly installed with clamping plate 1;

[0037] The telescopic sleeve includes fixed rod 4 and spring button 5, both ends of fixed rod 4 are slidably sleeved with the positioning sleeve 3 fixedly connected with the upper end of triangular support 2, a plurality of positioning holes 6 are evenly formed on the upper surface of positioning sleeve 3, both ends of fixed rod 4 are provided with first cylindrical hole 41, and vertical first fixed column 42 is fixedly installed in first cylindrical hole 41.

[0038] The spring button 5 includes button cap 51 and first spring 53 sleeved on the outside of first fixed column 42, the bottom of button cap 51 is fixedly installed with first cylinder 52, the upper end of first fixed column 42 is slidably inserted into the inside of first cylinder 52, both ends of first spring 53 are fixedly connected with the inner bottom wall of first cylindrical hole 41 and the lower surface of first cylinder 52 respectively, the button cap 51 is pressed downward, the first cylinder 52 is driven to slide downward along the first fixed column 42 and press the first spring 53, until the button cap 51 is retracted into the inside of first cylindrical hole 41, at this time, the pipe wall of positioning sleeve 3 no longer restricts the button cap 51 when the positioning hole 6 formed on the upper surface of positioning sleeve 3 is aligned with the button cap 51, the elastic restoring force of first spring 53 pushes the first cylinder 52 upward, so that the button cap 51 installed on the upper surface of first cylinder 52 extends out of the positioning hole 6, thereby limiting the fixed rod 4 and the positioning sleeve 3.

[0039] In actual production process, according to the size of the clamped thin-wall metal plate, the two positioning sleeves 3 can be pulled to the two sides by pressing the spring button 5, so as to adjust the length of the telescopic sleeve, and further adjust the horizontal distance between the two clamping plates 1.

[0040] As Figure 2 shown, the triangular support 2 includes two long rods, one end of the two long rods is fixedly connected, and the included angle between the two long rods is obtuse, the bottom of the long rod is fixedly installed with vertical short rod, and the short rod is fixedly connected with the upper surface of the clamping plate 1.

[0041] As Figure 1 , Figure 3 and Figure 7As shown, the opposite faces of the two clamping plates 1 are provided with three-opened cavities, the inner bottom wall of the cavity is fixedly installed with two rows of staggered fixed clamping parts 9, the inner top wall of the cavity is fixedly installed with two rows of staggered elastic clamping parts 8, and the upper and lower positions of the elastic clamping parts 8 and the fixed clamping parts 9 are opposite;

[0042] The elastic clamping part 8 comprises a spherical head 83 and a sleeve fixedly installed on the inner top wall of the cavity, and a second cylinder 84 is fixedly installed on the upper surface of the spherical head 83; a second fixed column 81 is fixedly installed inside the sleeve, the lower end of the second fixed column 81 is slidably sleeved inside the second cylinder 84, and a second spring 82 is sleeved outside the second fixed column 81, and the two ends of the second spring 82 are fixedly connected with the inner top wall of the sleeve and the upper surface of the second cylinder 84 respectively;

[0043] The fixed clamping part 9 is a spherical protrusion welded on the inner bottom wall of the cavity, and the thin metal plate is clamped between the spherical protrusion and the spherical head 83; since the opposite faces of the spherical protrusion and the spherical head 83 are spherical surfaces, they are in point contact with the surface of the thin metal plate, that is, the thin metal plate is in point contact with the elastic clamping part 8 and the fixed clamping part 9, which reduces the clamping area, enables the thin metal plate to be fully colored, and reduces the clamp mark.

[0044] When clamping the thin metal plate, only the side surface of the thin metal plate needs to be pushed into the space between the fixed clamping part 9 and the spherical head 83 along the arc-shaped gap on both sides of the fixed clamping part 9 and the spherical head 83; in this process, the spherical head 83 is pushed by the upward extrusion force of the clamped thin metal plate, the spherical head 83 drives the second cylinder 84 to slide along the second fixed column 81 and extrude the second spring 82; when one side of the thin metal plate is inserted between the spherical head 83 and the fixed clamping part 9, the elastic restoring force of the second spring 82 reversely pushes the second cylinder 84, so that the vertex of the spherical head 83 tightly abuts against the surface of the thin metal plate, and the upward force of the fixed clamping part 9 on the lower surface of the thin metal plate cooperates to firmly clamp the thin metal plate, which can effectively prevent the thin metal plate from loosening.

[0045] The elastic clamping part 8 and the fixed clamping part 9 are both provided with two rows, and a plurality of fixed clamping parts 9 and elastic clamping parts 8 correspondingly clamp the surface of the thin metal plate, so that the clamping is more stable and not easy to loosen.

[0046] As shown in the figure, Figure 8 As shown, the middle of the fixed rod 4 is fixedly installed with a lifting ring 7, before coloring treatment, the triangular support 2 is pulled up through the lifting ring 7, so that the thin metal plate is put into the anodizing tank, and after coloring treatment, it is taken out from the anodizing tank.

[0047] Preferably, the long rod and the short rod are welded with each other, and the two long rods are also welded with each other at one end, thereby forming the triangular support 2.

[0048] Preferably, one end of the positioning sleeve 3 is welded to the triangular bracket 2.

[0049] Preferably, the upper surface of the clamping plate 1 is welded to the lower end of the triangular bracket 2, specifically, the upper surface of the clamping plate 1 is welded to the lower end of the short rod.

[0050] Preferably, the top surface of the button cap 51 is a smooth curved surface, so that when the positioning sleeve 3 is pulled, the top surface of the button cap 51 can slide along the inner wall of the positioning sleeve 3, making it smoother.

[0051] Preferred, such as Figure 5 As shown, the positioning sleeve 3 has 10 positioning holes 6 evenly distributed on it.

[0052] Preferred, such as Figure 3 As shown, the elastic clamping parts 8 are evenly distributed in two rows on the inner top wall of the cavity, with one row having 5 elastic clamping parts 8 and the other row having 4 elastic clamping parts 8, and the two rows of elastic clamping parts 8 are staggered. Similarly, since the fixed clamping parts 9 and the elastic clamping parts 8 are arranged in a one-to-one correspondence, the fixed clamping parts 9 are also evenly distributed in two rows on the inner bottom wall of the cavity, with one row having 5 fixed clamping parts 9 and the other row having 4 fixed clamping parts 9, and the two rows of fixed clamping parts 8 are staggered. Through the staggered arrangement of multiple sets of fixed clamping parts 9 and elastic clamping parts 8, the surface of the thin-walled metal plate is subjected to more uniform force, which facilitates the stable clamping of the thin-walled metal plate.

[0053] Preferably, both the fixed clamping part 9 and the elastic clamping part 8 have a gap of 3-5 cm between them and the rear wall of the cavity, so that the side of the thin-walled metal plate does not contact the rear wall of the cavity, which facilitates coloring the side of the thin-walled metal plate.

[0054] Preferably, the distance between two adjacent positioning holes 6 is 5cm.

[0055] The working principle of this utility model is as follows:

[0056] In use, first, according to the size of the thin-wall metal plate, the relative position of the two positioning sleeves 3 and the fixed rod 4 is adjusted by pressing the spring button 5, so that the distance between the two clamping plates 2 matches the size of the thin-wall metal plate, and then the two sides of the thin-wall metal plate are inserted into the gap between the elastic clamping part 8 and the fixed clamping part 9 of the two clamping plates 1, in the process of inserting the thin-wall metal plate, the spherical head 83 is pushed by the upward extrusion force of clamping the thin-wall metal plate, the spherical head 83 drives the second cylinder 84 to slide along the second fixed column 81 and extrude the second spring 82, when one side of the thin-wall metal plate is inserted between the elastic clamping part 8 and the fixed clamping part 9, the elastic recovery force of the second spring 82 reversely pushes the second cylinder 84, so that the vertex of the spherical head 83 tightly abuts against the surface of the thin-wall metal plate, then the thin-wall metal plate is placed into the anodizing tank by pulling up the triangular support frame through the lifting ring 7, the surface of the thin-wall metal plate is colored, after the coloring is finished, finally the thin-wall metal plate is pulled out of the anodizing tank through the lifting ring 7.

Claims

1. A clamping device for large-size thin-walled sheet metal, characterized in that, It includes a telescopic sleeve, with triangular brackets (2) fixedly installed at both ends of the telescopic sleeve, and clamping plates (1) fixedly installed at the lower end of the triangular brackets (2). The two clamping plates (1) have cavities with three openings on their opposite sides. The inner bottom wall of the cavity is fixedly installed with multiple fixed clamping parts (9), and the inner top wall of the cavity is fixedly installed with multiple elastic clamping parts (8). The upper and lower positions of the elastic clamping parts (8) and the fixed clamping parts (9) correspond one-to-one, and the opposite ends of the elastic clamping parts (8) and the fixed clamping parts (9) are both spherical. The thin-walled metal plate is clamped between the elastic clamping parts (8) and the fixed clamping parts (9).

2. The clamping device for large-size thin-wall metal sheets according to claim 1, characterized in that, The retractable sleeve includes a fixed rod (4) and a spring button (5). Both ends of the fixed rod (4) are slidably sleeved with positioning sleeves (3) that are fixedly connected to the upper end of the triangular bracket (2). The positioning sleeves (3) have several positioning holes (6) on them. Both ends of the fixing rod (4) are provided with first cylindrical holes (41), and a first fixing post (42) is fixedly installed inside the first cylindrical hole (41); The spring button (5) includes a button cap (51) that can extend out of the positioning hole (6) and a first spring (53) sleeved on the outside of the first fixing post (42). The bottom of the button cap (51) is fixedly installed with a first cylinder (52). The upper end of the first fixing post (42) is slidably inserted into the inside of the first cylinder (52). The two ends of the first spring (53) are fixedly connected to the inner bottom wall of the first cylindrical hole (41) and the lower surface of the first cylinder (52), respectively.

3. The clamping device for large-size thin-wall metal sheets according to claim 2, characterized in that, The top surface of the button cap (51) is a smooth curved surface.

4. The clamping device for large-size thin-wall metal sheets according to any one of claims 1 to 3, characterized in that The elastic clamping part (8) includes a sleeve fixedly installed on the inner top wall of the cavity and a spherical head (83) that can extend into or out of the sleeve. A second cylinder (84) is fixedly installed on the upper surface of the spherical head (83). The sleeve has a second fixing post (81) fixedly installed inside. The lower end of the second fixing post (81) is slidably sleeved inside the second cylinder (84), and a second spring (82) is sleeved outside the second fixing post (81). The two ends of the second spring (82) are fixedly connected to the inner top wall of the sleeve and the upper surface of the second cylinder (84), respectively.

5. The device for clamping large-size thin-wall metal sheets according to any one of claims 1 to 3, characterized in that, The fixing clamp (9) is a spherical protrusion welded to the inner bottom wall of the cavity.

6. The device for clamping large-size thin-wall sheet metal according to any one of claims 1 to 3, characterized in that, Both the elastic clamping part (8) and the fixed clamping part (9) are provided in two rows, wherein: the two rows of elastic clamping parts (8) are evenly and alternately distributed on the top wall of the cavity; the two rows of fixed clamping parts (9) are evenly and alternately distributed on the bottom wall of the cavity.

7. The device according to any one of claims 1 to 3, characterized in that Both the fixed clamping part (9) and the elastic clamping part (8) have a gap of 3 to 5 cm between them and the rear wall of the cavity.

8. The device according to any one of claims 1 to 3, characterized in that The triangular bracket (2) includes two long rods, one end of which is fixedly connected, and the included angle between the two long rods is an obtuse angle. A vertical short rod is fixedly installed at the bottom of the long rod, and the short rod is fixedly connected to the upper surface of the clamp (1).

9. The clamping device for large-size thin-wall sheet metal according to claim 2 or 3, characterized in that, A lifting ring (7) is fixedly installed in the middle of the fixed rod (4).

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