A seam welding clamping device

Abstract

The utility model discloses a kind of ring welding clamping devices, belong to ring welding equipment technical field, including machine table, bracket is equipped in machine table upside, hollow shaft is horizontally rotationally equipped on bracket, at least three clutches are evenly equipped with around the one week of the outer peripheral wall of one end of hollow shaft;Another end of hollow shaft is fixedly provided with telescopic cylinder, the piston rod of telescopic cylinder is connected with a push rod, the piston rod of telescopic cylinder is connected with push rod one end, and the other end is passed through hollow shaft and extends to the inside of clutch, and the outer peripheral wall on the one end of the inside of clutch where push rod is located is rotatably connected with connecting plate, one end of connecting plate is rotatably connected with push rod, and the other end is rotatably connected with the side wall of clutch.The beneficial effects of the present scheme are: three clutches are controlled to open and close quickly by telescopic cylinder, three are automatically centered, improve the production efficiency of motorcycle exhaust pipe;The movement stroke of cylinder is fixed, drive the clamping force of clutch fixed, reduce the operation steps of worker, prevent clamping injury when worker manually clamps, improve product appearance quality.

Description

Technical Field

[0001] This utility model relates to the field of ring welding equipment technology, and specifically to a ring welding clamping device. Background Technology

[0002] Motorcycle exhaust pipes are made of stainless steel. Typically, stainless steel sheets are first rolled into straight or conical shapes using a plate rolling machine and then welded in place. Several straight and conical pipes are then welded together sequentially to form the exhaust pipe structure. When welding the seam between two cylindrical parts, spot welding is performed first for initial fixation. The parts to be welded are then clamped and rotated for welding.

[0003] In the existing technology, there is a lack of equipment for clamping cylindrical parts. Common three-jaw chucks have slow opening and closing speeds and low clamping efficiency, which seriously affects welding efficiency. In addition, workers need to manually adjust the clamping force, which can easily deform the product and affect product quality. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to improve the clamping efficiency and product quality during the welding of motorcycle exhaust pipe rings.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a ring welding clamping device, including a machine platform, a bracket provided on the upper side of the machine platform, a hollow shaft horizontally rotatably provided on the bracket, at least three claws evenly provided around the outer peripheral wall of one end of the hollow shaft, one end of the claws being rotatably connected to the outer peripheral wall of the hollow shaft, so that the claws can rotate along the radial direction of the hollow shaft. The other end of the hollow shaft is fixedly equipped with a telescopic cylinder. The piston rod of the telescopic cylinder is connected to a push rod. One end of the push rod is connected to the piston rod of the telescopic cylinder, and the other end passes through the hollow shaft and extends to the inside of the chuck. A connecting plate is rotatably connected to the outer peripheral wall of the push rod at the position corresponding to the chuck. One end of the connecting plate is rotatably connected to the push rod, and the other end is rotatably connected to the side wall of the chuck.

[0006] The beneficial effects of this solution are as follows: by controlling the rapid opening and closing of the three jaws through the telescopic cylinder, the three jaws are automatically aligned, which improves the production efficiency of motorcycle exhaust pipes; the fixed stroke of the cylinder drives the jaws to maintain a fixed clamping force, reducing the number of operation steps for workers, preventing workers from damaging the products when manually clamping, and improving the appearance quality of the products.

[0007] Preferably, a first hinge seat is detachably installed on the outer peripheral wall of the hollow shaft near the chuck, and one end of the chuck is rotatably connected to the outer peripheral wall of the first hinge seat.

[0008] The advantages of adopting the above preferred solution are: the first hinge seat is detachably connected to the hollow shaft, which facilitates the replacement and maintenance of the components; if the number of chucks is to be increased, the first hinge seat with more hinge positions can be replaced, thus reducing costs.

[0009] Preferably, a second hinge seat is detachably installed on the outer peripheral wall of one end of the push rod that extends into the inner side of the claw. One end of the connecting plate is rotatably connected to the outer peripheral wall of the second hinge seat, and the other end is rotatably connected to the side wall of the claw.

[0010] The advantages of adopting the above preferred solution are: the second hinge seat and the push rod are detachably connected, which facilitates the replacement and maintenance of the components; to increase the number of pawls, the second hinge seat with more hinge positions can be replaced, thus reducing costs.

[0011] Preferably, the machine base is also provided with a support frame, which is located on the side of the bracket away from the telescopic cylinder, and a positioning groove is provided on the upper side of the support frame.

[0012] The advantages of adopting the above preferred solution are: when the cylinder to be welded is relatively long, the jaws hold one end, and the support frame supports the other end to prevent the cylinder to be welded from bending flexibly.

[0013] Preferably, the bracket is equipped with a rotational power source, which is poweredly connected to the hollow shaft.

[0014] The advantages of adopting the above-mentioned preferred solution are: the rotating power source drives the hollow shaft and chuck to rotate, and the worker performs circumferential welding on the cylinder to be welded, thereby improving production efficiency.

[0015] Preferably, a first gear is fixedly provided on the output shaft of the rotary power source, and a second gear is fixedly provided on the outer peripheral wall of the hollow shaft, with the first gear and the second gear meshing.

[0016] The advantages of adopting the above-mentioned preferred solution are: more precise power transmission through gears and avoidance of slippage.

[0017] Preferably, a high-pressure air tank and a control pedal are provided on the lower side of the machine base, the telescopic cylinder is a double-acting cylinder, the high-pressure air tank is connected to the telescopic cylinder through a two-position five-way reversing valve, and the control pedal is electrically connected to the control end of the two-position five-way reversing valve.

[0018] The advantages of adopting the above-mentioned preferred solution are: by controlling the pedal to control the two-position five-way reversing valve to switch the direction, and thus controlling the extension or retraction of the telescopic cylinder, the operator does not need to bend over to press the button, thus improving work efficiency. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the overall design of this utility model; Appendix Figure 2 This is a schematic diagram of the hollow shaft of this utility model; Appendix Figure 3 This is a schematic diagram of the push rod of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Machine base; 2. Support; 3. Hollow shaft; 4. Claw; 5. Telescopic cylinder; 6. Push rod; 7. Connecting plate; 8. First hinge seat; 9. Second hinge seat; 10. Support frame; 11. Cylinder to be welded. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] Example 1 like Figure 1 As shown, a ring welding clamping device includes a machine platform 1, a support 2 on the upper side of the machine platform 1, a hollow shaft 3 horizontally rotatably mounted on the support 2, at least three claws 4 evenly arranged around the outer peripheral wall of one end of the hollow shaft 3, one end of the claws 4 being rotatably connected to the outer peripheral wall of the hollow shaft 3, so that the claws 4 can rotate along the radial direction of the hollow shaft 3. The other end of the hollow shaft 3 is fixedly provided with a telescopic cylinder 5. The piston rod of the telescopic cylinder 5 is connected to a push rod 6. One end of the push rod 6 is connected to the piston rod of the telescopic cylinder 5, and the other end passes through the hollow shaft 3 and extends to the inside of the chuck 4. A connecting plate 7 is rotatably connected to the outer peripheral wall of the push rod 6 at the position corresponding to the chuck 4. One end of the connecting plate 7 is rotatably connected to the push rod 6, and the other end is rotatably connected to the side wall of the chuck 4.

[0023] In this embodiment, the telescopic cylinder 5 is fixed to the end of the hollow shaft 3 and can rotate together with the hollow shaft 3. When the telescopic cylinder 5 extends or retracts, it drives the push rod 6 to move. The push rod 6 drives the connecting plate 7, and the connecting plate 7 pulls the claw 4 to close or open, which facilitates quick clamping of products.

[0024] The three jaws 4 are evenly arranged, thus providing an automatic centering function, making it easier to clamp cylindrical parts. Furthermore, the travel stroke of the telescopic cylinder 5 is fixed, which in turn fixes the opening and closing range of the jaws 4. Therefore, the clamping force of the jaws 4 is fixed, reducing the number of steps required by the worker, preventing the worker from damaging the product when manually clamping it, and improving the product's appearance quality.

[0025] like Figure 2 As shown, a first hinge seat 8 is detachably installed on the outer peripheral wall of the hollow shaft 3 near the claw 4, and one end of the claw 4 is rotatably connected to the outer peripheral wall of the first hinge seat 8.

[0026] In this embodiment, the first hinge seat 8 is detachably connected to the hollow shaft 3, which facilitates the replacement and maintenance of the components; if the number of pawls 4 is to be increased, the first hinge seat 8 with more hinge positions can be replaced, thereby reducing costs.

[0027] like Figure 3 As shown, a second hinge seat 9 is detachably installed on the outer peripheral wall of one end of the push rod 6 that extends into the inner side of the claw 4. One end of the connecting plate 7 is rotatably connected to the outer peripheral wall of the second hinge seat 9, and the other end is rotatably connected to the side wall of the claw 4.

[0028] In this embodiment, the second hinge seat 9 and the push rod 6 are detachably connected, which facilitates the replacement and maintenance of the components; to increase the number of claws 4, the second hinge seat 9 with more hinge positions can be replaced, thus reducing costs.

[0029] like Figure 1 As shown, the machine base 1 is also provided with a support frame 10, which is located on the side of the bracket 2 away from the telescopic cylinder 5, and a positioning groove is provided on the upper side of the support frame 10.

[0030] In this embodiment, a positioning groove is provided on the upper side of the support frame 10. When the cylinder 11 to be welded is relatively long, the claw 4 clamps one end, and the other end is placed in the positioning groove of the support frame 10 to support it and prevent the cylinder 11 to be welded from bending flexibly. When the hollow shaft 3 drives one end of the cylinder 11 to be welded to rotate, the other end of the cylinder 11 to be welded rotates in the positioning groove.

[0031] like Figure 1 As shown, the bracket 2 is equipped with a rotational power source, which is poweredly connected to the hollow shaft 3.

[0032] like Figure 1 As shown, a first gear is fixedly mounted on the output shaft of the rotary power source, and a second gear is fixedly mounted on the outer peripheral wall of the hollow shaft 3. The first gear and the second gear mesh with each other.

[0033] In this embodiment, the rotary power source is a servo motor. The rotary power source transmits power more precisely through gears, avoiding slippage. The rotary power source drives the hollow shaft 3 and the chuck 4 to rotate slowly, and the worker performs circumferential welding at the welding position of the cylinder 11 to be welded, thereby improving production efficiency.

[0034] Based on this embodiment, the first gear and the second gear are speed reduction transmissions to prevent the hollow shaft 3 from rotating too fast, which would reduce the welding quality.

[0035] like Figure 1 As shown, the machine base 1 is equipped with a high-pressure air tank and a control pedal on its lower side. The telescopic cylinder 5 is a double-acting cylinder. The high-pressure air tank is connected to the telescopic cylinder 5 through a two-position five-way reversing valve. The control pedal is electrically connected to the control end of the two-position five-way reversing valve.

[0036] In this embodiment, the telescopic cylinder 5 is a double-acting cylinder with two chambers inside. The two chambers can be connected to an external air source, and compressed gas alternately enters and exits the two chambers, driving the piston rod to reciprocate between the two chambers. The two-position five-way reversing valve has one air inlet, two air outlets, and two air outlets. The air inlet is connected to compressed air, the two air outlets are connected to the two chambers of the telescopic cylinder 5 respectively, and the air outlets are connected to the outside. By moving the valve core, the two chambers of the telescopic cylinder 5 alternately change the air inlet and outlet directions, thereby driving the piston rod of the telescopic cylinder 5 to slide back and forth, causing the piston rod of the telescopic cylinder 5 to drive the pawl 4 to open and close. The system is controlled by a foot pedal, eliminating the need for workers to bend over and press buttons, thus improving work efficiency.

[0037] The 2-position 5-way directional valve is electromagnetically controlled. The control pedal is electrically connected to the coil of the 2-position 5-way directional valve. When the control pedal is pressed, the coil of the 2-position 5-way directional valve is energized, and the magnetic force drives the valve core to move. After the power is cut off, the spring pushes the valve core to reset.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A ring welding clamping device, comprising a machine platform (1), wherein a bracket (2) is provided on the upper side of the machine platform (1), characterized in that, A hollow shaft (3) is horizontally rotatably mounted on the bracket (2). At least three claws (4) are evenly arranged around the outer peripheral wall of one end of the hollow shaft (3). One end of the claw (4) is rotatably connected to the outer peripheral wall of the hollow shaft (3), so that the claw (4) can rotate along the radial direction of the hollow shaft (3). The other end of the hollow shaft (3) is fixedly provided with a telescopic cylinder (5). The piston rod of the telescopic cylinder (5) is connected to a push rod (6). One end of the push rod (6) is connected to the piston rod of the telescopic cylinder (5), and the other end passes through the hollow shaft (3) and extends to the inside of the chuck (4). A connecting plate (7) is rotatably connected to the outer peripheral wall of the push rod (6) at the position corresponding to the chuck (4). One end of the connecting plate (7) is rotatably connected to the push rod (6), and the other end is rotatably connected to the side wall of the chuck (4).

2. The ring welding clamping device according to claim 1, characterized in that, The hollow shaft (3) has a first hinge seat (8) detachably installed on the outer peripheral wall of the end near the chuck (4), and one end of the chuck (4) is rotatably connected to the outer peripheral wall of the first hinge seat (8).

3. The ring welding clamping device according to claim 1, characterized in that, The push rod (6) extends into the outer peripheral wall of the claw (4) and a second hinge seat (9) is detachably installed. One end of the connecting plate (7) is rotatably connected to the outer peripheral wall of the second hinge seat (9), and the other end is rotatably connected to the side wall of the claw (4).

4. The ring welding clamping device according to claim 1, characterized in that, The machine base (1) is also provided with a support frame (10), which is located on the side of the bracket (2) away from the telescopic cylinder (5), and a positioning groove is provided on the upper side of the support frame (10).

5. The ring welding clamping device according to claim 1, characterized in that, The bracket (2) is equipped with a rotational power source, which is poweredly connected to the hollow shaft (3).

6. The ring welding clamping device according to claim 5, characterized in that, A first gear is fixedly provided on the output shaft of the rotary power source, and a second gear is fixedly provided on the outer peripheral wall of the hollow shaft (3). The first gear and the second gear mesh.

7. The ring welding clamping device according to claim 1, characterized in that, The machine base (1) is equipped with a high-pressure gas tank and a control pedal on its lower side. The telescopic cylinder (5) is a double-acting cylinder. The high-pressure gas tank is connected to the telescopic cylinder (5) through a two-position five-way reversing valve. The control pedal is electrically connected to the control end of the two-position five-way reversing valve.

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