Welding fixture for workpiece phase angle control

Abstract

This utility model discloses a welding fixture for workpiece phase angle control, including a base, a control system disposed on the side wall of the base, and a lead screw module longitudinally mounted at the upper center of the base. An upper positioning fixture is mounted on the moving end of the lead screw module. This utility model relates to the field of welding fixture technology. Both the upper and lower positioning fixtures are designed to align and match the upper and lower products. Through the upper positive alignment long notch, the phase angle short notch, and the lower positive alignment concave notch on the upper and lower positioning fixtures, and the rotation driven by a high-precision servo motor and a pneumatic-electric integrated slip ring, combined with real-time feedback from an infrared detection component, a closed-loop control system is formed. This allows the device to accurately rotate and lock the workpiece at a preset target phase angle, improving welding efficiency, avoiding human error, and enhancing the accuracy and consistency of welding.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a welding fixture for workpiece phase angle control. Background Technology

[0002] During welding, workpiece positioning and phase angle control are crucial for the quality and stability of the weld joint. Traditional welding fixtures typically use a combination of manual mechanical operation and pneumatic systems to control workpiece positioning and phase angle. However, this manual fixture adjustment method suffers from low precision, excessive adjustment time, and the use of rigid fixtures lacks a mechanism for detecting phase angle accuracy, thus affecting weld quality. Utility Model Content

[0003] The purpose of this invention is to solve the above problems by designing a welding fixture for workpiece phase angle control, which improves the angle adjustment accuracy of the fixture, reduces adjustment time, achieves high phase angle control accuracy, and improves welding quality.

[0004] The technical solution of this utility model to achieve the above objectives is as follows: a welding fixture for workpiece phase angle control, including a base, a control system provided on the side wall of the base, a lead screw module longitudinally installed at the upper center of the base, an upper positioning fixture installed on the moving end of the lead screw module, and a lower positioning fixture provided at the bottom of the base corresponding to the upper positioning fixture, wherein the upper positioning fixture holds the upper product and the lower positioning fixture holds the lower product.

[0005] Both the upper and lower positioning fixtures include a driver. The driver in the upper positioning fixture is equipped with an upper positioning part, and the driver in the lower positioning fixture is equipped with a lower positioning part. The driver in the upper positioning fixture is equipped with an upper slot seat, and an inner support retainer is provided inside the upper slot seat. The inner support retainer matches the upper product. The driver in the lower positioning fixture is equipped with a lower slot seat, and an insertion retainer is installed on the lower slot seat. The insertion retainer matches the lower product.

[0006] Preferably, the upper product includes a cylindrical tube, and the outer wall surface of the cylindrical tube is provided with parallel teeth, and the outer wall surface of the cylindrical tube is provided with a plurality of small teeth in a circular array.

[0007] Preferably, the internal support retainer includes multiple narrow slots that match multiple small teeth, and the internal support retainer also includes wide slots that match parallel teeth. The multiple narrow slots and wide slots are circumferentially formed on the inner wall of the upper slot seat. A column is installed at the center of the inner wall of the upper slot seat. Multiple first electric push rods are arranged in a circular array on the outer wall of the column. A clamp is installed at the telescopic end of the first electric push rod. The clamp matches the inner wall of the column. A guide support assembly is installed between the column and the clamp.

[0008] Preferably, the guide support assembly includes a guide rod, which is installed on the side wall of the column. A sliding sleeve is movably fitted on the guide rod, and a connecting rod is installed between the sliding sleeve and the clamping plate.

[0009] Preferably, the lower end product includes a support lug, and through holes are provided on both sides of the support lug. A main rod is installed at the center of the upper wall of the support lug.

[0010] Preferably, the insert fixing device includes a horizontal plate, which is fixedly inserted into the inner wall of the lower slot. The horizontal plate has two insertion holes, which are matched with the two ends of the support lugs. Two second electric push rods are symmetrically installed on the inner bottom surface of the lower slot. Two sockets are symmetrically installed on the inner wall of the lower slot. The two sockets are respectively configured to correspond to the telescopic ends of the two second electric push rods. The telescopic ends of the second electric push rods are movably inserted through the through holes and movably inserted into the sockets.

[0011] Preferably, the driver includes a servo motor, the servo motor in the upper positioning fixture is mounted on the moving end of the lead screw module, the servo motor in the lower positioning fixture is mounted on the machine base, and the driving end of the servo motor is equipped with a pneumatic-electric integrated slip ring.

[0012] Preferably, the upper positioning part includes an upper sleeve plate, which is fixedly fitted onto the rotating end of the pneumatic-electric integrated slip ring in the upper positioning fixture. The upper sleeve plate has an upper positive position long notch, and a phase angle short notch is formed on one side of the upper sleeve plate located at the upper positive position long notch.

[0013] Preferably, the lower positioning part includes a lower sleeve, which is fixedly fitted onto the rotating end of the pneumatic-electric integrated slip ring in the lower positioning fixture, and the lower sleeve has a lower positioning recess.

[0014] Preferably, detection components are provided for the upper positive position long gap, the phase angle short gap, and the lower positive position concave gap. The detection components include two uprights, with connecting seats fixedly fitted on the two uprights. An infrared receiver and an infrared transmitter are respectively installed at one end of the two uprights.

[0015] Beneficial effects: The welding fixture for workpiece phase angle control manufactured using the technical solution of this utility model has features in both the upper and lower positioning fixtures that can align and match the upper and lower products. Through the upper positive positioning long notch, the phase angle short notch, and the lower positive positioning concave notch set on the upper and lower positioning fixtures, and driven by a high-precision servo motor and a pneumatic-electric integrated slip ring, combined with the real-time feedback of the infrared detection component, a closed-loop control system is formed. This allows the device to accurately rotate and lock the workpiece at the preset target phase angle, improving welding efficiency, avoiding human operation errors, and improving the accuracy and consistency of welding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention from a top-down perspective.

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below.

[0018] Figure 3 This is a front sectional view of the internal support fixing part of this utility model.

[0019] Figure 4 This is a front sectional view of the lower positioning fixture part of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the upper positioning clamp part of this utility model, viewed from below.

[0021] Figure 6 This is a three-dimensional structural diagram of the upper part of the product of this utility model.

[0022] Figure 7 This is a three-dimensional structural diagram of the lower part of the product of this utility model.

[0023] Figure 8 This is a three-dimensional structural diagram of the insertion and fixing part of this utility model.

[0024] Figure 9 This is a three-dimensional structural diagram of the upper positioning part of this utility model.

[0025] Figure 10 This is a three-dimensional structural diagram of the lower positioning part of this utility model.

[0026] In the diagram: 1. Upper product, 101. Column, 102. Parallel teeth, 103. Small teeth; 2. Lower product, 201. Support lug, 202. Through hole, 203. Main rod; 3. Detection assembly, 31. Upright rod, 32. Connecting seat, 33. Infrared receiver, 34. Infrared transmitter; 4. Upper positioning part, 41. Upper sleeve, 42. Upper positive positioning long notch, 43. Phase angle short notch; 5. Lower positioning part, 51. Lower sleeve, 52. Lower... 6. Upper slot seat, 7. Inner support retainer, 71. Narrow slot, 72. Wide slot, 73. Column, 74. First electric push rod, 75. Clamping plate, 76. Guide rod, 77. Sliding sleeve, 78. Connecting rod, 8. Lower slot seat, 9. Insertion retainer, 91. Horizontal plate, 92. Insertion hole, 93. Second electric push rod, 94. Socket, 10. Control system, 11. Lead screw module, 12. Servo motor, 13. Pneumatic-electric integrated slip ring, 14. Base. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] like Figures 1-10 As shown, a welding fixture for workpiece phase angle control includes a base 14, with a control system 10 mounted on the side wall of the base 14. A lead screw module 11 is longitudinally mounted at the upper center of the base 14, and an upper positioning fixture is mounted on the moving end of the lead screw module 11. A lower positioning fixture is provided at the bottom of the base 14, corresponding to the upper positioning fixture. The upper positioning fixture holds an upper product 1, and the lower positioning fixture holds a lower product 2.

[0029] Both the upper and lower positioning fixtures include a driver. The driver in the upper positioning fixture is equipped with an upper positioning part 4, and the driver in the lower positioning fixture is equipped with a lower positioning part 5. The driver in the upper positioning fixture is equipped with an upper slot 6, and an inner support retainer 7 is provided inside the upper slot 6, which matches the upper product 1. The driver in the lower positioning fixture is equipped with a lower slot 8, and an insertion retainer 9 is installed on the lower slot 8, which matches the lower product 2.

[0030] It should be noted that the operator places the upper product 1 into the upper slot 6 of the upper positioning fixture, and the built-in inner support retainer 7 works to fix the upper product 1. The operator then places the lower product 2 into the lower slot 8 of the lower positioning fixture, and the insertion retainer 9 works to fix the lower product 2.

[0031] Specifically, the upper product 1 includes a column 101, with parallel teeth 102 on the outer wall of the column 101, and multiple small teeth 103 arranged in a circular array on the outer wall of the column 101.

[0032] Specifically, the inner support retainer 7 includes multiple narrow slots 71 that match multiple small teeth 103, and the inner support retainer 7 also includes wide slots 72 that match parallel teeth 102. The multiple narrow slots 71 and wide slots 72 are circumferentially formed on the inner wall of the upper slot seat 6. A column 73 is installed at the center of the inner wall of the upper slot seat 6. Multiple first electric push rods 74 are arranged in a circular array on the outer wall of the column 73. A clamping plate 75 is installed at the telescopic end of the first electric push rod 74. The clamping plate 75 matches the inner wall of the column cylinder 101. A guide support assembly is installed between the column 73 and the clamping plate 75.

[0033] It should be noted that when fixing the upper product 1, the column 101 is placed in the upper slot 6 of the upper positioning fixture, and the parallel teeth 102 on the outer wall of the column 101 correspond to the wide slot 72, and the small teeth 103 correspond to the narrow slot 71. Multiple first electric push rods 74 synchronously drive their respective clamping plates 75 to extend outward through the guide support assembly, tightening the inner wall of the column 101 to fix the upper product 1.

[0034] Specifically, the guide support assembly includes a guide rod 76, which is installed on the side wall of the column 73. A sliding sleeve 77 is movably fitted on the guide rod 76, and a connecting rod 78 is installed between the sliding sleeve 77 and the clamping plate 75.

[0035] It should be noted that when the telescopic end of the first electric push rod 74 moves telescopically, the sliding sleeve 77 moves on the guide rod 76 under the connection of the connecting rod 78, which is used to protect the telescopic end of the first electric push rod 74.

[0036] Specifically, the lower product 2 includes a support ear 201, with through holes 202 on both sides of the support ear 201, and a main rod 203 installed at the center of the upper wall of the support ear 201.

[0037] Specifically, the insert fastener 9 includes a horizontal plate 91, which is fixedly inserted into the inner wall of the lower slot 8. Two insertion holes 92 are provided on the horizontal plate 91, and the two insertion holes 92 are matched with the two ends of the lug 201. Two second electric push rods 93 are symmetrically installed on the inner bottom surface of the lower slot 8, and two sockets 94 are symmetrically installed on the inner wall of the lower slot 8. The two sockets 94 are respectively set to correspond to the telescopic ends of the two second electric push rods 93. The telescopic ends of the second electric push rods 93 are movably inserted through the through hole 202 and are movably inserted into the sockets 94.

[0038] It should be noted that when fixing the lower product 2, the support ear 201 is inserted into the two sockets 92. At this time, the through holes 202 on both sides of the support ear 201 are aligned with the telescopic ends of the two second electric push rods 93. Through the synchronous action of the two second electric push rods 93, the telescopic ends of the two second electric push rods 93 extend out, pass through the through holes 202 on both sides of the support ear 201 and are inserted into the corresponding sockets 94, thereby achieving the fastening of the lower product 2.

[0039] Specifically, the upper positioning part 4 includes an upper sleeve 41, which is fixedly mounted on the rotating end of the pneumatic-electric integrated slip ring 13 in the upper positioning fixture. The upper sleeve 41 has an upper positive position long notch 42, and a phase angle short notch 43 is provided on the upper sleeve 41 and on one side of the upper positive position long notch 42.

[0040] It should be noted that the center of the upper positive position long notch 42 is set at 90 degrees to the center of the wide groove 72, and the angle between the center of the upper positive position long notch 42 and the center of the phase angle short notch 43 is the target angle between the upper product 1 and the lower product 2.

[0041] Specifically, the lower positioning part 5 includes a lower sleeve 51, which is fixedly mounted on the rotating end of the pneumatic-electric integrated slip ring 13 in the lower positioning fixture. The lower sleeve 51 has a lower positioning recess 52.

[0042] It should be noted that the center of the lower positive position recess 52 is set at a 90-degree angle to the center of the through hole 202.

[0043] Specifically, detection components 3 are provided at the upper positive long notch 42, the phase angle short notch 43, and the lower positive concave notch 52. The detection component 3 includes two uprights 31, with connecting seats 32 fixedly mounted on the two uprights 31. An infrared receiver 33 and an infrared transmitter 34 are respectively installed at one end of the two uprights 31.

[0044] It should be noted that when the upper positive position long notch 42 is aligned with the infrared receiver 33 and the infrared transmitter 34, and the lower positive position concave notch 52 is aligned with the infrared receiver 33 and the infrared transmitter 34, the center of the parallel tooth 102 of the upper product 1 coincides with the central axis of the through hole 202 on both sides of the support ear 201.

[0045] Specifically, the driver includes a servo motor 12. The servo motor 12 in the upper positioning fixture is mounted on the moving end of the lead screw module 11, and the servo motor 12 in the lower positioning fixture is mounted on the base 14. The drive end of the servo motor 12 is equipped with a pneumatic-electric integrated slip ring 13. The control system 10 is a control panel with a built-in microcontroller to control the device.

[0046] It should be noted that during device operation, the control system 10 controls the servo motor 12 and the pneumatic-electric integrated slip ring 13 in the upper positioning fixture to align the upper positive alignment notch 42 with the infrared receiver 33 and the infrared transmitter 34. The control system 10 then controls the servo motor 12 and the pneumatic-electric integrated slip ring 13 in the upper positioning fixture again until the phase angle notch 43 aligns with the infrared receiver 33 and the infrared transmitter 34. At this point, the control system 10 calculates the deviation between the rotation angle of the servo motor 12 and the preset phase angle. If a deviation exists, the control system 10 prompts the operator to adjust the position. The device is adjusted. If there is no deviation, it continues to work. The control system 10 controls the servo motor 12 and the pneumatic-electric integrated slip ring 13 in the lower positioning fixture to work, so that the lower positive position notch 52 is aligned with the infrared receiver 33 and the infrared transmitter 34. At this time, the upper product 1 and the lower product 2 are at the target phase angle. Then the control unit controls the lead screw module to work, driving the upper positioning fixture and the upper product 1 to descend to the target position. Then the control unit controls the servo motor 12 in the upper positioning fixture and the lower positioning fixture to rotate synchronously at the same time. The welding gun can then weld the upper product 1 and the lower product 2.

[0047] The working principle of the servo motor 12 is to receive pulse signals from the control system 10. The pulse signals precisely control the rotation angle, speed and position of the drive end of the servo motor 12. Its built-in encoder will feed back the actual rotation position of the servo motor 12 to the control system 10 in real time, forming a closed loop to ensure rotation accuracy.

[0048] The pneumatic-electric integrated slip ring 13 consists of a stator and a rotor. It is used to transmit power between the stator and the rotor, such as the power required to drive the first electric push rod 74 and the second electric push rod 93. It is also used to transmit control signals, such as signals to control the movement of the first electric push rod 74 and the second electric push rod 93. With the installation of the pneumatic-electric integrated slip ring 13, all electrical and pneumatic components installed at the rotor end can continuously obtain energy and signals during operation, and will not cause pipeline entanglement and breakage due to rotation.

[0049] When the control system 10 commands the servo motor 12 of the upper or lower positioning fixture to rotate by a phase angle, the servo motor 12 starts and its drive end begins to rotate precisely. The drive end of the servo motor 12 is directly connected to the rotor end of the pneumatic-electric integrated slip ring 13. Therefore, when the servo motor 12 rotates, the rotor part of the entire slip ring also rotates, and the upper sleeve 41 and lower sleeve 51 connected to it rotate accordingly.

[0050] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A welding fixture for workpiece phase angle control, comprising a base (14), wherein a control system (10) is provided on the side wall of the base (14), and a lead screw module (11) is longitudinally mounted at the upper center of the base (14), characterized in that, An upper positioning fixture is installed on the moving end of the lead screw module (11), and a lower positioning fixture is provided at the bottom of the base (14) and corresponding to the upper positioning fixture. The upper positioning fixture holds the upper product (1), and the lower positioning fixture holds the lower product (2). Both the upper and lower positioning fixtures include a driver. The driver in the upper positioning fixture is equipped with an upper positioning part (4), and the driver in the lower positioning fixture is equipped with a lower positioning part (5). The driver in the upper positioning fixture is equipped with an upper slot (6), and an inner support retainer (7) is provided inside the upper slot (6). The inner support retainer (7) matches the upper product (1). The driver in the lower positioning fixture is equipped with a lower slot (8), and an insert retainer (9) is installed on the lower slot (8). The insert retainer (9) matches the lower product (2).

2. The welding fixture for workpiece phase angle control according to claim 1, characterized in that, The upper product (1) includes a cylindrical tube (101), and the outer wall of the cylindrical tube (101) is provided with parallel teeth (102), and the outer wall of the cylindrical tube (101) is provided with a plurality of small teeth (103) in a circular array.

3. The welding fixture for workpiece phase angle control according to claim 1, characterized in that, The inner support fixture (7) includes multiple narrow slots (71) that match multiple small teeth (103), and the inner support fixture (7) also includes a wide slot (72) that matches the parallel teeth (102). The multiple narrow slots (71) and wide slots (72) are circumferentially opened on the inner wall of the upper slot seat (6). A column (73) is installed at the center of the inner wall of the upper slot seat (6). Multiple first electric push rods (74) are arranged in a circular array on the outer wall of the column (73). A clamp (75) is installed at the telescopic end of the first electric push rod (74). The clamp (75) matches the inner wall of the column cylinder (101). A guide support assembly is installed between the column (73) and the clamp (75).

4. The welding fixture for workpiece phase angle control according to claim 3, characterized in that, The guide support assembly includes a guide rod (76), which is installed on the side wall of the column (73). A sliding sleeve (77) is movably fitted on the guide rod (76), and a connecting rod (78) is installed between the sliding sleeve (77) and the clamping plate (75).

5. The welding fixture for workpiece phase angle control according to claim 1, characterized in that, The lower product (2) includes a support ear (201), and through holes (202) are provided on both sides of the support ear (201). A main rod (203) is installed at the center of the upper wall of the support ear (201).

6. The welding fixture for workpiece phase angle control according to claim 1, characterized in that, The insert fastener (9) includes a horizontal plate (91), which is fixedly inserted into the inner wall of the lower slot (8). The horizontal plate (91) has two insertion holes (92), which are matched with the two ends of the lugs (201). Two second electric push rods (93) are symmetrically installed on the inner bottom surface of the lower slot (8). Two sockets (94) are symmetrically installed on the inner wall of the lower slot (8). The two sockets (94) are respectively set to correspond to the telescopic ends of the two second electric push rods (93). The telescopic ends of the second electric push rods (93) are movably inserted through the through hole (202) and movably inserted into the sockets (94).

7. The welding fixture for workpiece phase angle control according to claim 1, characterized in that, The driver includes a servo motor (12), the servo motor (12) in the upper positioning fixture is mounted on the moving end of the lead screw module (11), the servo motor (12) in the lower positioning fixture is mounted on the base (14), and the driving end of the servo motor (12) is equipped with a pneumatic-electric integrated slip ring (13).

8. The welding fixture for workpiece phase angle control according to claim 1, characterized in that, The upper positioning part (4) includes an upper sleeve (41), which is fixedly mounted on the rotating end of the pneumatic-electric integrated slip ring (13) in the upper positioning fixture. The upper sleeve (41) has an upper positive position long notch (42), and a phase angle short notch (43) is provided on the upper sleeve (41) and on one side of the upper positive position long notch (42).

9. The welding fixture for workpiece phase angle control according to claim 8, characterized in that, The lower positioning part (5) includes a lower sleeve (51), which is fixedly mounted on the rotating end of the pneumatic-electric integrated slip ring (13) in the lower positioning fixture. The lower sleeve (51) has a lower positive positioning recess (52).

10. The welding fixture for workpiece phase angle control according to claim 9, characterized in that, The upper positive long gap (42), the phase angle short gap (43) and the lower positive concave gap (52) are each provided with a detection component (3). The detection component (3) includes two uprights (31), and a connecting seat (32) is fixedly fitted on the two uprights (31). An infrared receiver (33) and an infrared transmitter (34) are respectively installed at one end of the two uprights (31).

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