Welding gun welding wire straightness and calibration original point detector

Abstract

The utility model discloses a welding gun welding wire straightness and calibration original point detector which comprises a gun cleaner body, a carrier plate, a protective sleeve, a lower shaft sleeve, a detection shaft, a limiting sleeve, a guide shaft, a first guide sleeve, a first spring, a movable contact, a switch feeler lever, a second spring, a guide rod, a switch base and a touch switch. The detection device can synchronously detect the straightness and the length dimension of the welding wire exposed out of the gun head, all the exposed welding wires which do not meet the straightness and length dimension requirements in a single time are cut off after detection is completed, the wire feeding mechanism feeds the welding wires outwards after cutting off, the welding wires meeting the requirements continue to be used, the welding operation quality is improved, and the welding efficiency is improved. The problem that the material cost is wasted due to the fact that a gun head is exposed and a welding wire needs to be sheared and fed every time after the gun is cleaned is solved, the welding quality is mainly improved, the welding wire is not bent, the length requirement is met, normal arcing of a welding seam is guaranteed, the welding seam deviation phenomenon does not occur, and in addition, the detector is installed on the side face of the gun cleaning device, and normal use of the gun cleaning device is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding guns, in particular to a welding gun welding wire straightness and calibration origin detector. Background Art

[0002] The welding gun is an important tool for processing and manufacturing enterprises to carry out welding operations. During the welding process, the melted metal slag will be deposited and solidified at the gun head of the welding gun. In particular, the gap formed by the inner wall of the gas guide sleeve and the outer wall of the conductive nozzle is prone to accumulate slag, which is very unfavorable to the welding process. In order to achieve high-quality welding results, the welding gun head must be cleaned frequently. When cleaning the welding gun head, the welding wire in the gun head is cut synchronously, and then the wire is fed out through the wire feeding mechanism to ensure the accurate straightness of the welding gun wire and improve the welding quality. However, although cutting all the welding wire exposed in the gun head can ensure that the straightness of the welding gun wire meets the requirements, frequently cleaning the gun and cutting off some welding wires that meet the straightness requirements will cause waste of welding wire materials and increase the cost of welding operations. Summary of the invention

[0003] The technical problem to be solved by the utility model is to improve a detector for detecting whether the straightness of the welding wire in the gun head meets the requirements after cleaning the gun, and only cut off the welding wire exposed in the gun head that does not meet the straightness requirements, so as to reduce the material cost of the welding operation.

[0004] In order to solve the above technical problems, the present invention is realized through the following technical solutions: a welding gun welding wire straightness and calibration origin detector, including a gun cleaner body, a carrier plate, a protective sleeve, a lower sleeve, a detection shaft, a limit sleeve, a guide shaft, a first guide sleeve, a first spring, a movable contact, a switch contact rod, a second spring, a guide rod, a switch seat and a touch switch, the carrier plate is fixedly mounted on the side of the gun cleaner body, the protective sleeve is fixedly mounted on the carrier plate, the lower sleeve is fixedly mounted in the protective sleeve, the limit sleeve is fixedly mounted on the top of the lower sleeve, and the limit sleeve is fixedly mounted on the lower sleeve. A first guide hole connected to each other is coaxially arranged, the guide shaft is slidably installed in the first guide hole, first guide grooves are symmetrically arranged on both sides of the limit sleeve, the first guide grooves extend to the bottom of the limit sleeve, guide posts are installed on both sides of the detection shaft, the guide posts are slidably installed in the first guide grooves, the top of the detection shaft is arranged as a frustum-shaped structure, the first guide sleeve is fixedly installed at the bottom of the lower sleeve, the guide shaft is slidably installed in the first guide sleeve, the top of the guide shaft is coaxially fixedly connected with the detection shaft, the first spring is sleeved and installed on the guide shaft, the upper and lower ends of the first spring act on the detection shaft and the first guide sleeve respectively, a travel contact with a semicircular structure is fixedly arranged on the detection shaft, a contact guide groove is arranged on the right side of the first guide hole of the lower sleeve, the contact guide groove extends to the top of the lower sleeve, the travel contact is slidably installed in the contact guide groove, a first through hole connected to the contact guide groove is arranged on the lower sleeve, a second guide sleeve is fixedly installed on the outer end of the first through hole, the switch seat is fixedly installed on the outer side of the lower sleeve, a receiving groove is arranged in the switch seat, and the touch switch is fixedly installed in the receiving groove The movable contact is slidably installed in the first through hole, the left end of the switch contact rod is coaxially fixedly connected with the movable contact, the right end of the switch contact rod is slidably installed in the second guide sleeve, the second spring is sleeved on the switch contact rod, the left and right ends of the second spring act on the movable contact and the second guide sleeve respectively, the right end of the switch contact rod is located in the accommodating groove, the guide rod is fixedly installed on the movable contact, the right end of the guide rod is slidably installed on the switch seat, the right end of the guide rod is fixedly sleeved with a limit stop ring, and the limit stop ring is pressed against the switch seat.

[0005] Furthermore, the portion of the right end of the movable contact beyond the first through hole is configured as a spherical structure.

[0006] Furthermore, the lower portion of the guide shaft extends beyond the protective sleeve.

[0007] Furthermore, the lower part of the protective sleeve is fixedly mounted on the gun cleaner body through a reinforcing sleeve.

[0008] Compared with the prior art, the utility model has the following advantages: the utility model is beneficial in that the utility model can synchronously detect the straightness and length of the welding wire exposed from the gun tip, and after the detection is completed, all the exposed welding wire that does not meet the straightness and length requirements are cut off, and the wire feeding mechanism feeds the wire outward after cutting, and the tin wire that meets the requirements continues to be used, thereby improving the quality of welding operations, avoiding the problem of material cost waste caused by the need to cut and feed the welding wire exposed from the gun tip every time the gun is cleaned, and the welding wire that meets the requirements continues to be used, thereby improving the quality of welding operations, avoiding the problem of material cost waste caused by the need to cut and feed the welding wire exposed from the gun tip every time the gun is cleaned, and mainly improving the welding quality, the welding wire is not bent, the length is sufficient, and the weld arc is normal, and there is no weld deviation. In addition, the detector is installed on the side of the gun cleaner and does not affect the normal use of the gun cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings.

[0010] Figure 1 It is a schematic diagram of the installation structure of the utility model.

[0011] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0012] Figure 3 yes Figure 2 Enlarged structural diagram at M. DETAILED DESCRIPTION

[0013] The utility model is described in detail below in conjunction with specific implementation methods:

[0014] like Figures 1 to 3The welding wire straightness and calibration origin detector shown in the figure comprises a gun cleaner body 1, a carrier plate 2, a protective sleeve 3, a lower sleeve 4, a detection shaft 5, a limit sleeve 6, a guide shaft 7, a first guide sleeve 71, a first spring 72, a movable contact 8, a switch contact rod 81, a second spring 82, a guide rod 83, a switch seat 9 and a touch switch 91. The carrier plate 2 is fixedly mounted on the side of the gun cleaner body 1, the protective sleeve 3 is fixedly mounted on the carrier plate 2, the lower sleeve 4 is fixedly mounted in the protective sleeve 3, the limit sleeve 6 is fixedly mounted on the top of the lower sleeve 4, the limit sleeve 6 is coaxially provided with a first guide hole in communication with the lower sleeve 4, the guide shaft 7 is slidably mounted in the first guide hole, and the two sides of the limit sleeve 6 are opposite to each other. A first guide groove 52 is provided, and the first guide groove 52 extends to the bottom of the limit sleeve 6. Guide columns 51 are installed on both sides of the detection shaft 5. The guide columns 51 are slidably installed in the first guide groove 52. The top of the detection shaft 5 is set to a frustum-shaped structure. The top surface diameter of the frustum-shaped structure of the detection shaft 5 is set to 1.1-1.5 times the diameter of the welding wire to improve the detection accuracy of the welding wire straightness. The first guide sleeve 71 is fixedly installed at the bottom of the lower sleeve 4, and the guide shaft 7 is slidably installed in the first guide sleeve 71. The top of the guide shaft 7 is coaxially fixedly connected with the detection shaft 5. The first spring 72 is sleeved on the guide shaft 7, and the upper and lower ends of the first spring 72 act on the detection The detection shaft 5 and the first guide sleeve 71 are fixedly provided with a semicircular travel contact 520, the first guide hole of the lower sleeve 4 is provided with a contact guide groove 40 on the right side, the contact guide groove 40 extends to the top of the lower sleeve 4, the travel contact 520 is slidably installed in the contact guide groove 40, the lower sleeve 4 is provided with a first through hole 41 connected to the contact guide groove 40, the outer end of the first through hole 41 is fixedly installed with a second guide sleeve 10, the switch seat 9 is fixedly installed on the outside of the lower sleeve 4, the switch seat 9 is provided with a receiving groove, the touch switch 91 is fixedly installed in the receiving groove, the movable contact 8 is slidably installed in the first through hole 41, and the switch touch rod 81 is on the left The second end is coaxially fixedly connected with the movable contact 8, the right end of the switch contact rod 81 is slidably installed in the second guide sleeve 10, the second spring 82 is sleeved on the switch contact rod 81, the left and right ends of the second spring 82 act on the movable contact 8 and the second guide sleeve 10 respectively, the right end of the switch contact rod 81 is located in the accommodating groove, the guide rod 83 is fixedly installed on the movable contact 8, the right end of the guide rod 83 is slidably installed on the switch seat 9, the right end of the guide rod 83 is fixedly sleeved with a limit stop ring 84, the limit stop ring 84 is pressed against the switch seat 9, and also includes a control module, the welding gun mechanical arm, the wire cutting mechanism of the gun cleaner body 1, and the touch switch 91 are respectively connected to the control module through circuits.

[0015] The portion of the right end of the movable contact 8 that exceeds the first through hole 41 is set as a spherical structure, which can avoid the problem of jamming when the travel contact 520 contacts, presses and pushes the movable contact 8.

[0016] The lower part of the guide shaft 7 extends beyond the protective sleeve 3, and the user can judge whether the detector is working normally according to the movement state of the guide shaft 7, so as to facilitate timely maintenance and repair.

[0017] The lower part of the protective sleeve 3 is fixedly mounted on the gun cleaner body 1 through the reinforcing sleeve 101. The reinforcing sleeve 101 can reinforce the mounting structure of the protective sleeve 3, so that the overall mounting structure strength of the detector is higher.

[0018] After the welding gun head is cleaned by the gun cleaner body 1, the welding gun head moves to the square position of the detection axis 5 and then falls vertically. The welding wire in the gun head presses the detection axis 5 to push it to move downward by overcoming the elastic force of the first spring 72. After the travel contact 520 contacts the movable contact 8, it overcomes the elastic force of the second spring 82 and squeezes it into the first through hole 41. The switch contact rod 81 contacts the touch switch 91 to cause it to operate. The touch switch 91 sends an electrical signal to the control module. After the welding gun head moves downward to the preset position under the control of the robotic arm, it stays for 2-3 seconds and then retracts upward. If the electrical signal of the touch switch 91 lasts for 2-3 seconds, the straightness and length size range of the welding wire meet the requirements. If the electrical signal of the touch switch 91 exists only for a moment, and when the welding gun head retracts upward under the control of the robotic arm, the touch switch 91 generates another electrical signal for a moment, then the welding wire length size process, if the touch switch 91 does not produce an action, the welding wire in the gun head is too short, or the straightness of the welding wire does not meet the requirements and cannot be pressed against the top surface of the detection shaft 5 to press it down, the welding wire in the gun head is too long or too short, and the welding wire whose straightness does not meet the standard is cut off and re-fed through the wire feeding mechanism to ensure the subsequent welding quality.

Claims

1. A welding gun welding wire straightness and calibration origin detector, characterized in that: The gun cleaner comprises a main body (1), a carrier plate (2), a protective sleeve (3), a lower shaft sleeve (4), a detection shaft (5), a limit sleeve (6), a guide shaft (7), a first guide sleeve (71), a first spring (72), a movable contact (8), a switch contact rod (81), a second spring (82), a guide rod (83), a switch seat (9) and a touch switch (91), wherein the carrier plate (2) is fixedly mounted on the side of the gun cleaner main body (1), the protective sleeve (3) is fixedly mounted on the carrier plate (2), the lower shaft sleeve (4) is fixedly mounted in the protective sleeve (3), the limit sleeve (6) is fixedly mounted on the top of the lower shaft sleeve (4), the limit sleeve (6) and the lower shaft sleeve (4) are coaxially provided with a first guide hole in communication, and the guide shaft (7) is slidably mounted on the lower shaft sleeve (4). The detection shaft (5) is installed in the first guide hole, the two sides of the limit sleeve (6) are symmetrically provided with first guide grooves (52), the first guide grooves (52) extend to the bottom of the limit sleeve (6), the two sides of the detection shaft (5) are provided with guide columns (51), the guide columns (51) are slidably installed in the first guide grooves (52), the top of the detection shaft (5) is arranged in a frustum-shaped structure, the first guide sleeve (71) is fixedly installed at the bottom of the lower sleeve (4), the guide shaft (7) is slidably installed in the first guide sleeve (71), the top of the guide shaft (7) is coaxially fixedly connected with the detection shaft (5), the first spring (72) is sleeved and installed on the guide shaft (7), the upper and lower ends of the first spring (72) act on the detection shaft (5) and the first guide shaft (5) respectively. A travel contact (520) with a semicircular structure is fixedly arranged on the guide sleeve (71), a contact guide groove (40) is arranged on the right side of the first guide hole of the lower sleeve (4), the contact guide groove (40) extends to the top of the lower sleeve (4), the travel contact (520) is slidably installed in the contact guide groove (40), the lower sleeve (4) is provided with a first through hole (41) connected to the contact guide groove (40), the outer end of the first through hole (41) is fixedly installed with a second guide sleeve (10), the switch seat (9) is fixedly installed on the outer side of the lower sleeve (4), the switch seat (9) is provided with a receiving groove, the touch switch (91) is fixedly installed in the receiving groove, and the movable contact (8) is slidably installed in the contact guide groove (40). The switch contact rod (81) is movably mounted in the first through hole (41); the left end of the switch contact rod (81) is coaxially fixedly connected with the movable contact (8); the right end of the switch contact rod (81) is slidably mounted in the second guide sleeve (10); the second spring (82) is sleeved on the switch contact rod (81); the left and right ends of the second spring (82) act on the movable contact (8) and the second guide sleeve (10) respectively; the right end of the switch contact rod (81) is located in the accommodating groove; the guide rod (83) is fixedly mounted on the movable contact (8); the right end of the guide rod (83) is slidably mounted on the switch seat (9); the right end of the guide rod (83) is fixedly sleeved with a limit stop ring (84); the limit stop ring (84) presses against the switch seat (9).

2. The welding gun welding wire straightness and calibration origin detector according to claim 1, characterized in that: The portion of the right end of the movable contact (8) that exceeds the first through hole (41) is configured as a spherical structure.

3. The welding gun welding wire straightness and calibration origin detector according to claim 1, characterized in that: The lower part of the guide shaft (7) extends beyond the protective sleeve (3).

4. The welding gun welding wire straightness and calibration origin detector according to claim 1, characterized in that: The lower part of the protective sleeve (3) is fixedly mounted on the gun cleaner body (1) via a reinforcing sleeve (101).

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