Special pressing machine for gas shielded welding torch

Abstract

The application discloses a special buckling machine for gas shielded welding torch, which comprises a control unit, a power unit and an execution unit installed on a machine box, the power unit is a hydraulic station, the execution unit comprises a buckling oil cylinder and a core pulling oil cylinder, the buckling oil cylinder comprises a buckling oil cylinder cylinder, the buckling oil cylinder cylinder is fixedly connected with the machine box, two ends of the buckling oil cylinder cylinder are fixedly connected with mounting plates and front flanges respectively, a first oil hole and a second oil hole are formed through the bottom of the buckling oil cylinder cylinder, a conical port piston is slidably connected with the inner wall of the buckling oil cylinder cylinder, and a first inner cavity is formed between the conical port piston and the buckling oil cylinder cylinder; the buckling oil cylinder cylinder, the conical port piston, the single-cone-face die holder, the die, the core pulling oil cylinder and the core supporting device are arranged, one-stop operation of the steps of supporting the core, positioning the buckling position, buckling and core pulling in the connecting of the connecting rod joint and the gun barrel can be realized, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to a crimping machine, specifically a crimping machine for gas shielded welding torches. Background Technology

[0002] Gas shielded welding, as an important welding method, has a wide range of applications in the industrial field due to its advantages such as fast welding speed, small deformation, and simple operation.

[0003] As an indispensable tool in gas-shielded welding, the gas-shielded welding torch is used extensively. Its manufacturing process, from components to the torch itself, requires multiple processes to ensure quality. Currently, in the manufacturing process of connecting the connecting rod joint 25 to the torch barrel 26, the connecting rod joint 25 is placed into the torch barrel 26, and then a crimping machine is used to crimp the outer tube 27, thus connecting the connecting rod joint 25 and the torch barrel 26 into a single unit. To prevent the inner hole of the connecting rod joint 25 from shrinking during crimping, which would affect subsequent assembly and use, a support core is placed beforehand to ensure the correct size of the inner hole of the connecting rod joint 25 during crimping. After crimping is complete, a specialized core-pulling device is used to remove the support core.

[0004] The crimping process of the connecting rod joint 25 and the gun barrel 26 involves two different processes, crimping and core pulling, which require two different machines. This results in a series of problems, such as workpiece transfer, low processing efficiency, and relatively complex operation, and needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a crimping machine specifically for gas shielded welding torches, so as to solve the problems mentioned in the background art.

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

[0007] A crimping machine for gas shielded welding torches includes a control unit, a power unit, and an execution unit mounted on a chassis. The power unit is a hydraulic station. The execution unit includes a crimping cylinder and a core-pulling cylinder. The crimping cylinder includes a cylinder barrel, which is fixedly connected to the chassis. A mounting plate and a front flange are fixedly connected to both ends of the cylinder barrel. A first oil hole and a second oil hole are formed through the bottom of the cylinder barrel. A tapered piston is slidably connected to the inner wall of the cylinder barrel, forming a first inner cavity that communicates with the first oil hole. A rear piston is fixedly connected to the tail end of the tapered piston. A second inner cavity is formed between the piston and the cylinder barrel of the pressing cylinder. The second oil hole communicates with the second inner cavity. Both the first oil hole and the second oil hole are connected to the hydraulic station through pipelines. Multiple single-cone mold seats are arranged in a circular pattern on the inner wall of the cylinder barrel of the pressing cylinder. A mold is installed on the single-cone mold seat. The conical surface of the single-cone mold seat fits against the inner wall of the conical opening of the conical piston. Several springs are arranged between every two adjacent single-cone mold seats. The end face of the single-cone mold seat fits against the inner end face of the front flange. The core-pulling cylinder is fixedly connected to the mounting plate. The piston rod of the core-pulling cylinder is connected to a support core through a quick-release mechanism. The support core is located inside the pressing cylinder, and multiple molds are arranged in a circular pattern on the outside of the support core.

[0008] As a further aspect of the present invention: the pressing cylinder is provided with a first sealing ring, a second sealing ring and a third sealing ring. The first sealing ring is embedded in the surface of the conical piston and fits against the inner wall of the pressing cylinder barrel. The second sealing ring is embedded in the inner wall of the pressing cylinder barrel and fits against the outer wall of the conical piston. The third sealing ring is sleeved on the tail end of the conical piston and fits against the end face of the rear piston and the inner wall of the pressing cylinder barrel. The first inner cavity is located between the first sealing ring and the second sealing ring, and the second inner cavity is located between the second sealing ring and the third sealing ring.

[0009] As a further aspect of the present invention: the quick-release mechanism includes a sleeve that is movably fitted onto the piston rod of the core-pulling cylinder, the core-supporting element passing through the sleeve, and a limiting block integrally formed at one end of the core-supporting element located inside the sleeve, the sleeve and the piston rod of the core-pulling cylinder being provided with a pin passing through them, and the surfaces of the piston rod of the core-pulling cylinder and the sleeve being provided with through holes adapted to the pin.

[0010] As a further embodiment of the present invention: a guide cylinder is provided through the outer wall of the mounting plate, the outer wall of the ferrule is slidably connected to the inner wall of the guide cylinder, and a positioning sleeve is movably sleeved on the outer wall of the support core, the positioning sleeve being embedded in the end face of the guide cylinder.

[0011] As a further embodiment of the present invention: the guide cylinder is movably connected to the mounting plate, the outer wall of the mounting plate is threaded with a screw, a blind hole is provided on the outer wall of the guide cylinder at the corresponding position of the screw, and the end of the screw passes through the mounting plate and is located in the blind hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This invention, by setting up a clamping cylinder barrel, a conical piston, a single-conical mold base, a mold, a core-pulling cylinder, and a core support, can simultaneously realize the one-stop operation of adding a core support, clamping position positioning, clamping and core pulling in the clamping connection between the connecting rod joint and the gun barrel, which greatly improves processing efficiency, simplifies processing operation steps, and has good performance.

[0014] 2. The present invention utilizes the cooperation between the pin and the through hole. When the pin is pulled out of the through hole, the sleeve and the support core can be pulled out from the opening of the front flange, thereby achieving quick disassembly of the support core.

[0015] 3. This invention utilizes the setting of screws and blind holes. After loosening the screws and disengaging their ends from the blind holes, the guide cylinder can be removed from the mounting plate, thereby achieving quick disassembly of the guide cylinder. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a crimping machine specifically designed for gas shielded welding torches.

[0017] Figure 2 This is a schematic diagram of the actuator unit in a gas shielded welding torch crimping machine.

[0018] Figure 3 This is a cross-sectional view of the actuator in a gas shielded welding torch crimping machine.

[0019] Figure 4 This is a schematic diagram of the internal structure of the cylinder barrel of the crimping cylinder in a crimping machine for gas shielded welding torches.

[0020] Figure 5 This is a schematic diagram of the spring structure in a gas shielded welding torch crimping machine.

[0021] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0022] The components include: chassis 1, control unit 2, power unit 3, execution unit 4, clamping cylinder barrel 5, rear piston 6, front flange 7, conical piston 8, first inner cavity 9, first oil hole 10, second oil hole 11, first sealing ring 12, second sealing ring 13, single conical mold base 14, mold 15, mounting plate 16, core-pulling cylinder 17, ferrule 18, pin 19, limit block 20, support core 21, guide cylinder 22, screw 23, positioning sleeve 24, connecting rod joint 25, gun barrel 26, clamping outer tube 27, spring 28, second inner cavity 29, and third sealing ring 30. Detailed Implementation

[0023] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation in the specification, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0026] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0027] Please see Figures 1-6In this embodiment of the invention, a control unit 2, a power unit 3, and an execution unit 4 are mounted on a chassis 1. The power unit 3 is a hydraulic station. The execution unit 4 includes a clamping cylinder and a core-pulling cylinder 17. The clamping cylinder includes a clamping cylinder barrel 5, which is fixedly connected to the chassis 1. A mounting plate 16 and a front flange 7 are fixedly connected to both ends of the clamping cylinder barrel 5, respectively. A first oil hole 10 and a second oil hole 11 are provided through the bottom of the clamping cylinder barrel 5. A conical piston 8 is slidably connected to the inner wall of the clamping cylinder barrel 5. A first inner cavity 9 is formed between the conical piston 8 and the clamping cylinder barrel 5, and the first inner cavity 9 communicates with the first oil hole 10. A rear piston 6 is fixedly connected to the tail end of the conical piston 8. The rear piston 6, the conical piston 8, and the clamping cylinder barrel 4 are connected together. A second inner cavity 29 is formed between the cylinder barrels 5. The second oil hole 11 communicates with the second inner cavity 29. The first oil hole 10 and the second oil hole 11 are both connected to the hydraulic station through pipelines. The inner wall of the cylinder barrel 5 of the pressing cylinder is provided with a plurality of single conical mold seats 14 arranged in a circular pattern. A mold 15 is installed on the single conical mold seat 14. The conical surface of the single conical mold seat 14 is in contact with the inner wall of the conical opening of the conical piston 8. A plurality of springs 28 are provided between every two adjacent single conical mold seats 14. The end face of the single conical mold seat 14 is in contact with the inner end face of the front flange 7. The core-pulling cylinder 17 is fixedly connected to the mounting plate 16. The piston rod of the core-pulling cylinder 17 is connected to the support core 21 through a quick-release mechanism. The support core 21 is located inside the pressing cylinder, and a plurality of molds 15 are arranged in a circular pattern on the outside of the support core 21.

[0028] The pressing cylinder is provided with a first sealing ring 12, a second sealing ring 13, and a third sealing ring 30. The first sealing ring 12 is embedded in the surface of the conical piston 8 and fits against the inner wall of the pressing cylinder barrel 5. The second sealing ring 13 is embedded in the inner wall of the pressing cylinder barrel 5 and fits against the outer wall of the conical piston 8. The third sealing ring 30 is sleeved on the tail end of the conical piston and fits against the end face of the rear piston 6 and the inner wall of the pressing cylinder barrel 5. The first inner cavity 9 is located between the first sealing ring 12 and the second sealing ring 13, and the second inner cavity 29 is located between the second sealing ring 13 and the third sealing ring 30.

[0029] By setting the first sealing ring 12, the second sealing ring 13 and the third sealing ring 30, the sealing performance of the first inner cavity 9 and the second inner cavity 29 can be guaranteed, thereby avoiding hydraulic oil leakage during the operation of the clamping cylinder. By alternately inputting hydraulic oil into the first inner cavity 9 and the second inner cavity 29 by the hydraulic station, the sliding action of the conical piston 8 and the rear piston 6 in the clamping cylinder body 5 can be realized.

[0030] The quick-release mechanism includes a sleeve 18 that is movably fitted onto the piston rod of the core-pulling cylinder 17. The support core 21 passes through the sleeve 18, and a limiting block 20 is integrally formed at one end of the support core 21 located inside the sleeve 18. A pin 19 is provided through the sleeve 18 and the piston rod of the core-pulling cylinder 17. The piston rod of the core-pulling cylinder 17 and the surface of the sleeve 18 are provided with through holes that are adapted to the pin 19.

[0031] With the engagement of pin 19 and through hole, when pin 19 is pulled out of through hole, ferrule 18 and support core 21 can be pulled out outward from the opening of front flange 7.

[0032] The outer wall of the mounting plate 16 is provided with a guide cylinder 22, the outer wall of the sleeve 18 is slidably connected to the inner wall of the guide cylinder 22, and the outer wall of the support core 21 is movably sleeved with a positioning sleeve 24, which is embedded in the end face of the guide cylinder 22.

[0033] The guide cylinder 22 improves the stability of the movement of the sleeve 18 and the support core 21.

[0034] The guide cylinder 22 is movably connected to the mounting plate 16. The outer wall of the mounting plate 16 is threaded with a screw 23. A blind hole is provided at the corresponding position of the screw 23 on the outer wall of the guide cylinder 22. The end of the screw 23 passes through the mounting plate 16 and is located in the blind hole.

[0035] By using the screw 23 and the blind hole, loosen the screw 23 so that its end is disengaged from the blind hole, and then the guide cylinder 22 can be removed from the mounting plate 16.

[0036] The working principle of this invention is:

[0037] In the standby state of the crimping machine, the piston rod of the core-pulling cylinder 17 is extended, and at the same time, the single-cone mold base 14 drives the mold 15 to open. During the crimping operation, the assembled connecting rod joint 25, gun barrel 26 and crimping outer tube 27 are fitted onto the support core 21, and the end of the connecting rod joint 25 abuts against the end face of the positioning sleeve 24. At this time, multiple molds are just circumferentially distributed on the outside of the crimping outer tube 27. Then, the control unit 2 controls the corresponding hydraulic valve on the power unit 3 to inject hydraulic oil into the first inner cavity 9 through the first oil hole 10 to push the conical piston 8 to move towards the forward flange 7. Thus, by utilizing the cooperation between the conical opening of the conical piston 8 and the conical surface of the single-cone mold base 14, multiple molds 15 are driven to move towards the crimping outer tube 27 to crimp the crimping outer tube 27, thereby realizing the connection between the connecting rod joint 25 and the gun barrel 26.

[0038] After the clamping is completed, hydraulic oil is injected into the second inner cavity 29 through the second oil hole 11, and the hydraulic oil in the first inner cavity 9 flows back to the hydraulic station through the first oil hole 10, which can drive the conical piston 8 to move towards the mounting plate 16. At this time, the single conical mold base 14 automatically resets under the action of the spring 28, so that the mold 15 opens. When the mold 15 is fully reset, the core-pulling cylinder 17 is activated, and its piston rod retracts, so that the support core 21 can be pulled out from the gun barrel 24 and the connecting rod joint 25, completing the operation.

[0039] The execution unit in this invention is a single-cone radial shrinking clamping mechanism. The conical piston 8 has a conical opening, and the front flange 7 is a flat port. Through the single-cone mold base 14, the mold 15 can be synchronously shrinking and opening only in the diameter direction. Compared with the traditional double-cone clamping mechanism, this execution unit has no axial displacement during radial shrinking and opening.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas shielded welding torch crimping machine, comprising a control unit (2), a power unit (3), and an execution unit (4) mounted on a housing (1), wherein the power unit (3) is a hydraulic station, characterized in that: The execution unit (4) includes a clamping cylinder and a core-pulling cylinder (17). The clamping cylinder includes a clamping cylinder barrel (5), which is fixedly connected to the housing (1). Mounting plates (16) and front flanges (7) are fixedly connected to both ends of the clamping cylinder barrel (5). A first oil hole (10) and a second oil hole (11) are provided through the bottom of the clamping cylinder barrel (5). A conical piston (8) is slidably connected to the inner wall of the clamping cylinder barrel (5). A first inner cavity (9) is formed between the conical piston (8) and the clamping cylinder barrel (5). The first inner cavity (9) communicates with the first oil hole (10). A rear piston (6) is fixedly connected to the tail end of the conical piston (8). A second inner cavity (29) is formed between the rear piston (6), the conical piston (8), and the clamping cylinder barrel (5). The oil hole (11) is connected to the second inner cavity (29). The first oil hole (10) and the second oil hole (11) are both connected to the hydraulic station through pipelines. The inner wall of the cylinder barrel (5) of the pressing cylinder is provided with multiple single conical mold seats (14) arranged in a circular pattern. A mold (15) is installed on the single conical mold seat (14). The conical surface of the single conical mold seat (14) is in contact with the inner wall of the conical opening of the conical piston (8). Every two adjacent single conical mold seats (14) are connected in a circular pattern. Several springs (28) are arranged between the conical mold bases (14). The end face of the single conical mold base (14) is in contact with the inner end face of the front flange (7). The core-pulling cylinder (17) is fixedly connected to the mounting plate (16). The piston rod of the core-pulling cylinder (17) is connected to the support core (21) through a quick-release mechanism. The support core (21) is located inside the clamping cylinder, and multiple molds (15) are circumferentially distributed on the outside of the support core (21).

2. The gas shielded welding torch crimping machine according to claim 1, characterized in that: The pressing cylinder is provided with a first sealing ring (12), a second sealing ring (13) and a third sealing ring (30). The first sealing ring (12) is embedded in the surface of the conical piston (8) and fits against the inner wall of the pressing cylinder barrel (5). The second sealing ring (13) is embedded in the inner wall of the pressing cylinder barrel (5) and fits against the outer wall of the conical piston (8). The third sealing ring (30) is sleeved on the tail end of the conical piston and fits against the end face of the rear piston (6) and the inner wall of the pressing cylinder barrel (5). The first inner cavity (9) is located between the first sealing ring (12) and the second sealing ring (13), and the second inner cavity (29) is located between the second sealing ring (13) and the third sealing ring (30).

3. The gas shielded welding torch crimping machine according to claim 1, characterized in that: The quick-release mechanism includes a sleeve (18) that is movably fitted onto the piston rod of the core-pulling cylinder (17), through which the support core (21) passes, and an integrally formed limiting block (20) at one end of the support core (21) located inside the sleeve (18). A pin (19) is provided through both the sleeve (18) and the piston rod of the core-pulling cylinder (17). The surfaces of the piston rod of the core-pulling cylinder (17) and the sleeve (18) are provided with through holes that are compatible with the pin (19).

4. The gas shielded welding torch crimping machine according to claim 3, characterized in that: The outer wall of the mounting plate (16) is provided with a guide cylinder (22), the outer wall of the sleeve (18) is slidably connected to the inner wall of the guide cylinder (22), and the outer wall of the support core (21) is movably sleeved with a positioning sleeve (24), which is embedded in the end face of the guide cylinder (22).

5. The gas shielded welding torch crimping machine according to claim 4, characterized in that: The guide cylinder (22) is movably connected to the mounting plate (16). The outer wall of the mounting plate (16) is threaded with a screw (23). A blind hole is provided at the corresponding position of the screw (23) on the outer wall of the guide cylinder (22). The end of the screw (23) passes through the mounting plate (16) and is located in the blind hole.

Images