Clamping device for seamless welding of aluminum alloy photo frame

Abstract

The utility model relates to the technical field of seamless welding, and discloses a clamping device for seamless welding of an aluminum alloy photo frame, which comprises a base and two positioning strips fixed on the upper end surface of the base, the inner side surfaces of the two positioning strips are perpendicular to each other, and the outer side surfaces of the two positioning strips are respectively provided with a pressing device; comprising a supporting plate fixed to a base, an air cylinder is fixed to the supporting plate, a gear is rotationally installed at the output end of the air cylinder, and the gear is engaged with a first rack and a second rack; the lower end of the first rack is fixedly connected with a first pressing block, and the lower end of the second rack is hinged to the middle of the second pressing block. The first pressing block mainly presses the upper end face of the photo frame strip to prevent the photo frame strip from displacing in the vertical direction, the second pressing block mainly presses the inclined end face of the photo frame strip to prevent the photo frame strip from displacing in the horizontal direction, and the first pressing block and the second pressing block are matched to achieve a better pressing and clamping effect on the photo frame strip.

Description

Technical Field

[0001] This utility model relates to the field of seamless welding technology, and in particular to a clamping device for seamless welding of aluminum alloy photo frames. Background Technology

[0002] During the production of picture frames, the aluminum alloy frame strips need to be seamlessly welded. When welding two frame strips, they need to be aligned and fixed in position to avoid accidentally moving the frame strips during the welding process, which could lead to welding quality problems.

[0003] Existing picture frame welding devices typically use cylinders or electric actuators to press down a clamping block, causing it to press against the top surface of the picture frame and prevent displacement during welding. However, for aesthetic reasons, most picture frames on the market today have a flat outer top surface that gradually curves inward at an angle. This means the frame strip used for welding is not perfectly square; it's usually a right-angled trapezoid. This results in a small contact area between the existing clamping block and the top surface. To effectively clamp the frame strip during welding, increased pressure is necessary to increase the friction between the clamping block and the frame strip. However, excessive pressure can cause deformation of the frame strip, while insufficient pressure will not provide enough clamping force. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a clamping device for seamless welding of aluminum alloy photo frames. It solves the problem that in existing clamping devices, the contact area between the clamping block and the upper surface of the photo frame strip is small. If the photo frame strip is to be clamped during the welding process, the pressure must be increased to increase the friction between the clamping block and the photo frame strip. If the pressure is too high, it will cause deformation of the photo frame strip. However, if the pressure is too low, the photo frame strip cannot be clamped.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a clamping device for seamless welding of aluminum alloy photo frames, comprising a base and two positioning strips fixed on the upper surface of the base, wherein the inner sides of the two positioning strips are perpendicular to each other, characterized in that the outer sides of the two positioning strips are respectively provided with pressing devices;

[0006] The clamping device includes a support plate with its bottom end fixed on the base. A vertically arranged cylinder is fixed on the support plate. A gear is rotatably mounted on the output end of the cylinder. The axis of the gear is perpendicular to the axis of the cylinder. The gear meshes with a first rack and a second rack. The first rack and the second rack slide with a first guide rail and a second guide rail, respectively. The first guide rail and the second guide rail are fixedly connected to the support plate. A first pressure block is fixedly connected to the lower end of the first rack. The lower end of the second rack is hinged to the middle of the second pressure block.

[0007] Preferably, the output end of the cylinder has a groove, the gear is located in the groove, and the two ends of the central shaft of the gear are respectively mounted on the output end of the cylinder through damping bearings.

[0008] Preferably, the two ends of the cylinder body are fixedly connected to the first fixed seat and the second fixed seat respectively. The first fixed seat and the second fixed seat are both fixed on the support plate, and the first guide rail and the second guide rail are fixed on the second fixed seat.

[0009] Preferably, the second fixed base has a through hole for the cylinder output end to pass through.

[0010] Preferably, the cross-section of the first sliding part of the first rack is dovetail-shaped, and the first guide rail is a dovetail-shaped guide rail with a matching shape.

[0011] Preferably, the cross-section of the second sliding part of the second rack is dovetail-shaped, and the second guide rail is a dovetail-shaped guide rail with a matching shape.

[0012] Preferably, a stop plate is fixed at one end of the second pressure block near the second sliding part. The stop plate is perpendicular to the second pressure block and can overlap with the side wall of the second sliding part.

[0013] This utility model provides a clamping device for seamless welding of aluminum alloy photo frames. Compared with the prior art, it has the following advantages:

[0014] This novel design uses gears that mesh with a first rack and a second rack to drive a first pressing block and a second pressing block to press the frame strip firmly. The first pressing block primarily presses the upper surface of the frame strip to prevent vertical displacement, while the second pressing block primarily presses the inclined end surface of the frame strip to prevent horizontal displacement. Together, they provide a better clamping and pressing effect on the frame strip. Attached Figure Description

[0015] Figure 1 This is an isometric view of a clamping device for seamless welding of aluminum alloy photo frames proposed in this utility model;

[0016] Figure 2 This is a front view of a clamping device for seamless welding of aluminum alloy photo frames proposed in this utility model;

[0017] Figure 3 for Figure 1 A magnified view of a portion at point A;

[0018] Figure 4 This is a dynamic transformation diagram of a clamping device for seamless welding of aluminum alloy photo frames proposed in this utility model;

[0019] Figure 5 for Figure 4A magnified view of a portion of point B.

[0020] Legend:

[0021] 10-Base; 11-Two positioning strips; 20-Support plate; 21-Cylinder; 22-Gear; 23-First rack; 231-First sliding part; 24-Second rack; 241-Second sliding part; 25-First guide rail; 26-Second guide rail; 27-First pressure block; 28-Second pressure block; 30-Groove; 41-First fixed seat; 42-Second fixed seat; 50-Stop plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 - Figure 5 This utility model provides a clamping device for seamless welding of aluminum alloy photo frames, including a base 10 for placing the photo frame strips. Two positioning strips 11 are fixed on the upper end surface of the base 10. The inner sides of the two positioning strips 11 are perpendicular to each other. The function of the two positioning strips 11 is to limit the position of the photo frame strips in the horizontal direction. The outer sides of the two positioning strips 11 are respectively equipped with pressing devices.

[0024] The clamping device includes a support plate 20 with its bottom end fixed to the base 10. A vertically arranged cylinder 21 is fixed on the support plate 20. A gear 22 is rotatably mounted on the output end of the cylinder 21. It should be noted that the gear 22 and the push rod of the cylinder 21 are not coaxially arranged; rather, the axis of the gear 22 is perpendicular to the axis of the push rod of the cylinder 21. The gear 22 meshes with a first rack 23 and a second rack 24, which are arranged on both sides of the gear 22. The first rack 23 and the second rack 24 are slidably engaged with a first guide rail 25 and a second guide rail 26, respectively. The first guide rail 25 and the second guide rail 26 are fixedly connected to the support plate 20. A first pressing block 27 is fixedly connected to the lower end of the first rack 23, and the lower end of the second rack 24 is hinged to the middle of a second pressing block 28. The lower end face of the first pressing block 27 can abut against the horizontal upper end face of the frame, and the lower end face of the second pressing block 28 can abut against the inclined end face of the frame.

[0025] As a further explanation of this embodiment, the output end of the cylinder 21 has a groove 30, the depth of which is greater than the radius of the gear 22. The gear 22 is located within the groove 30, and both ends of the central shaft of the gear 22 are mounted on the output end of the cylinder 21 via damping bearings. The gear 22 is mounted using damping bearings mainly because the damping bearings themselves have a certain amount of friction to prevent the gear 22 from rotating due to the difference in gravity between the first rack 23 and the second rack 24 during movement.

[0026] As a further explanation of this embodiment, the two ends of the cylinder body of cylinder 21 are fixedly connected to the first fixed seat 41 and the second fixed seat 42, respectively. The horizontal section of the first fixed seat 41 is fixed to the rear cover of the cylinder body of cylinder 21, and the vertical section of the first fixed seat 41 is fixed to the side wall of the support plate 20. The horizontal section of the second fixed seat 42 is fixed to the front cover of the cylinder body of cylinder 21, and the vertical section of the second fixed seat 42 is fixed to the side wall of the support plate 20. The first guide rail 25 and the second guide rail 26 are fixed to the lower end face of the horizontal section of the second fixed seat 42. A through hole is provided in the second fixed seat 42 for the output end of cylinder 21 to pass through.

[0027] As a further explanation of this embodiment, the first sliding portion 231 of the first rack 23 has a dovetail-shaped cross-section, and the first guide rail 25 is a dovetail-shaped guide rail with a matching shape. This design can prevent the first rack 23 from rotating relative to the first guide rail 25 or disengaging from the first guide rail 25 when it moves up and down along the first guide rail 25.

[0028] Similarly, the second sliding portion 241 of the second rack 24 has a dovetail-shaped cross-section, and the second guide rail 26 is a dovetail-shaped guide rail with a matching shape. This design prevents the second rack 24 from rotating relative to or disengaging from the second guide rail 26 when it moves up and down along the second guide rail 26.

[0029] As a further explanation of this embodiment, a stop plate 50 is fixed to one end of the second pressure block 28 near the second sliding part 241. The stop plate 50 is perpendicular to the second pressure block 28 and can overlap with the side wall of the second sliding part 241. The stop plate 50 is provided to limit the rotation of the second pressure block 28.

[0030] Working principle: First, place the two frame strips to be welded onto the base 10. Then, move the two frame strips so that their outer walls abut against the inner sides of the two positioning strips 11. Then, align the inclined ends of the two frame strips. Start the cylinder 21, and the output end of the cylinder 21 drives the gear 22 to move downward. It should be noted that when the cylinder 21 is in the initial state, the upper surfaces of the first rack 23 and the second rack 24 are both abutting against the second fixed seat 42. At this time, since the gear 22 is fixed, if any rack 23 or the second rack 24 moves downward, it will inevitably cause the other rack to move upward. Since the upper surfaces of the first rack 23 and the second rack 24 are both abutting against the second fixed seat 42, the first rack 23 and the second rack 24 cannot move in the initial state.

[0031] When gear 22 moves downward, it drives the first rack 23 and the second rack 24 to move downward simultaneously. The first pressure block 27 below the first rack 23 first abuts against the horizontal upper surface of the frame. Then gear 22 continues to move downward, but since the first rack 23 can no longer move downward, gear 22 will rotate, causing the second rack 24 to continue to move downward until the bottom surface of the second pressure block 28 contacts the inclined end surface of the frame strip. Then the second pressure block 28 rotates around its hinge axis with the second rack 24 until the second pressure block 28 abuts against the inclined end surface of the frame strip, completing the clamping and pressing of the frame strip.

[0032] This new invention uses a gear 22 that meshes with a first rack 23 and a second rack 24 to drive a first pressing block 27 and a second pressing block 28 to press the frame strip. The first pressing block 27 mainly presses the upper end face of the frame strip to prevent the frame strip from shifting in the vertical direction, while the second pressing block 28 mainly presses the inclined end face of the frame strip to prevent the frame strip from shifting in the horizontal direction. The two work together to achieve a better pressing and clamping effect on the frame strip.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping device for seamless welding of aluminum alloy photo frames, comprising a base (10) and two positioning strips (11) fixed to the upper surface of the base (10), wherein the inner surfaces of the two positioning strips (11) are perpendicular to each other, characterized in that, The outer sides of the two positioning strips (11) are respectively equipped with clamping devices; The clamping device includes a support plate (20) with its bottom end fixed on the base (10). A vertically arranged cylinder (21) is fixed on the support plate (20). A gear (22) is rotatably mounted on the output end of the cylinder (21). The axis of the gear (22) is perpendicular to the axis of the cylinder (21). The gear (22) meshes with a first rack (23) and a second rack (24). The first rack (23) and the second rack (24) slide with a first guide rail (25) and a second guide rail (26). The first guide rail (25) and the second guide rail (26) are fixedly connected to the support plate (20). A first pressure block (27) is fixedly connected to the lower end of the first rack (23). The lower end of the second rack (24) is hinged to the middle of the second pressure block (28).

2. The clamping device for seamless welding of aluminum alloy photo frames according to claim 1, characterized in that, The cylinder (21) has a groove (30) at its output end, and the gear (22) is located in the groove (30). The two ends of the central shaft of the gear (22) are respectively mounted on the output end of the cylinder (21) through damping bearings.

3. The clamping device for seamless welding of aluminum alloy photo frames according to claim 1, characterized in that, The two ends of the cylinder body (21) are fixedly connected to the first fixed seat (41) and the second fixed seat (42) respectively. The first fixed seat (41) and the second fixed seat (42) are both fixed on the support plate (20). The first guide rail (25) and the second guide rail (26) are fixed on the second fixed seat (42).

4. The clamping device for seamless welding of aluminum alloy photo frames according to claim 3, characterized in that, The second fixed base (42) has a through hole for the output end of the cylinder (21) to pass through.

5. The clamping device for seamless welding of aluminum alloy photo frames according to claim 1, characterized in that, The first sliding part (231) of the first rack (23) has a dovetail-shaped cross section, and the first guide rail (25) is a dovetail-shaped guide rail with a matching shape.

6. A clamping device for seamless welding of aluminum alloy photo frames according to claim 1 or 5, characterized in that, The second sliding part (241) of the second rack (24) has a dovetail-shaped cross section, and the second guide rail (26) is a dovetail-shaped guide rail with a matching shape.

7. A clamping device for seamless welding of aluminum alloy photo frames according to claim 6, characterized in that, A stop plate (50) is fixed at one end of the second pressure block (28) near the second sliding part (241). The stop plate (50) is perpendicular to the second pressure block (28) and can overlap with the side wall of the second sliding part (241).

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