Screw sleeve welding equipment

Abstract

The invention relates to a thread sleeve welding device which comprises positioners, clamps, a track, an active alignment clamp and an auxiliary alignment clamp, the two positioners are oppositely arranged, the distance between the two positioners is adjustable, the clamps are installed on the opposite sides of the positioners in a one-to-one correspondence mode, the clamps clamp the two ends of a cross beam, and the track is located between the active alignment clamp and the auxiliary alignment clamp. A plurality of holes are linearly formed in the cross beam at intervals, the track is arranged between the two position changing machines and located under the cross beam, the active alignment clamp is movably installed on the track, the auxiliary alignment clamp is movably installed under the cross beam and used for anchoring the holes, and a lifting assembly is installed on the active alignment clamp. The lifting assembly is used for clamping the threaded sleeve and enabling the threaded sleeve to movably penetrate through the auxiliary alignment clamp, and the active alignment clamp is matched with the auxiliary alignment clamp so that the threaded sleeve and the hole can be coaxial. The active alignment clamp is matched with the auxiliary alignment clamp, the to-be-welded thread sleeve and the hole are automatically and accurately aligned, manual operation errors are reduced, and efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a threaded sleeve welding device. Background Art

[0002] The screw sleeve, also known as the threaded sleeve, is made of high-strength, high-precision, high-surface-quality corrosion-resistant diamond-shaped steel wire. It has a high hardness and can significantly improve the thread strength of the base material to avoid thread slippage, misaligned teeth and other phenomena. Screw sleeve welding is a technology that connects the screw sleeve to the beam base by welding. The screw sleeve is used to enhance the strength and durability of the threaded connection, avoiding the plug-in directly spirally inserted into the beam, the connection strength is not up to standard, and it is easy to slip over time. The screw sleeve is welded in the beam base, which can eliminate the pitch and tooth deviation between the plug-in and the base screw hole, so that the load is evenly distributed, thereby improving the bearing capacity and fatigue resistance of the threaded connection. And because of the characteristics of the screw sleeve material itself and its extremely smooth surface, it will not rust the mating base when used in harsh environments such as humidity and corrosion, avoiding the replacement of the plug-in due to rusting of the threaded hole and inability to disassemble.

[0003] At present, the existing screw sleeve welding is mostly done manually. The operator manually inserts the screw sleeves into the preset holes of the beam base. Because the inner diameter of the preset holes on the beam is larger than the outer diameter of the screw sleeve, repeated pre-assembly and welding operations are easy to make the operator dizzy over time, and fatigue work reduces production efficiency, and causes the screw sleeve to be skewed during insertion. The subsequent manually welded screw sleeve cannot maintain a vertical posture in the beam base, causing the subsequent spiral insertion plug-in to be skewed, and the product quality accuracy does not meet the standard, resulting in a decrease in product yield. Therefore, it is necessary to realize automated welding operations. Summary of the invention

[0004] Based on this, it is necessary to provide a kind of thread sleeve welding equipment for the above problems.

[0005] A threaded sleeve welding device includes a positioner, a fixture, a track, an active alignment fixture and an auxiliary alignment fixture. Two of the positioners are arranged opposite to each other, and the distance between the two positioners is adjustable. The fixtures are installed one by one on the opposite side of the positioners. The fixtures clamp the two ends of a beam, and a plurality of holes are linearly spaced on the beam. The track is arranged between the two positioners and directly below the beam. The active alignment fixture is movably installed on the track, and the auxiliary alignment fixture is movably installed below the beam. The auxiliary alignment fixture is used to anchor the hole. A lifting assembly is installed on the active alignment fixture, and the lifting assembly is used to clamp the threaded sleeve and movably pass the threaded sleeve through the auxiliary alignment fixture and insert it into the hole. The active alignment fixture cooperates with the auxiliary alignment fixture so that the threaded sleeve and the hole are coaxial.

[0006] Preferably, the auxiliary alignment fixture includes a bracket, a cone, a spring column, a winding motor and a photoelectric receiver. The bracket is movably connected to the crossbeam. The middle of the bracket is hollowed out for installing the cone. A number of spring columns are arranged around the cone. One end of the spring column is connected to the bracket, and the other end is connected to the end of the cone with a larger diameter. The end of the cone with a smaller diameter is movably inserted into the hole. The winding motor is installed on the bracket, and the output end of the winding motor is connected to the cone through a pull rope. The photoelectric receiver is installed on the side of the bracket away from the crossbeam, and is used to receive the photoelectric signal emitted by the active alignment fixture.

[0007] Preferably, the auxiliary alignment fixture further comprises a guide column, the end of the cone having a larger diameter has an edge, one end of the guide column is connected to the bracket, and the other end movably passes through the edge.

[0008] Preferably, the auxiliary alignment fixture also includes a driving motor, a roller and a bearing frame, the roller is connected to the bracket through the bearing frame, and a plurality of the rollers are arranged on both sides of the beam and movably abut against the side walls of the beam.

[0009] Preferably, a fork is provided at the end of the cone cylinder with a smaller diameter, and a ring spring is sleeved on the outer side of the end of the cone cylinder with a smaller diameter.

[0010] Preferably, a ball is installed at the end port of the cone with a smaller diameter.

[0011] Preferably, the active alignment fixture includes a fine-tuning platform and a photoelectric transmitter. The fine-tuning platform is movably mounted on a track. The output end of the fine-tuning platform is connected to a lifting assembly to drive the lifting assembly to move along the X-direction or Y-direction. The photoelectric transmitter is mounted on the output end of the fine-tuning platform and surrounds the lifting assembly. The photoelectric transmitter corresponds to the photoelectric receiver so that the screw sleeve mounted on the lifting assembly is aligned with the central axis of the cone.

[0012] Preferably, the lifting assembly includes a lifting screw and a tightening kit, the lifting screw is installed on the fine-tuning platform, the tightening kit is installed on the top of the lifting screw, the screw sleeve is mounted on the tightening kit, and the lifting screw drives the screw sleeve to move up through the tightening kit and is inserted into the hole.

[0013] Preferably, the lifting screw includes a lifting motor, a screw body, a vertical frame and a slide cylinder. The lifting motor is installed on the fine-tuning platform with the output end facing upward. Both ends of the screw body are movably connected to the vertical frame. The output end of the lifting motor is connected to the screw body to drive the screw body to rotate. The slide cylinder is movably connected to the screw body and rises and falls along the vertical frame. The tightening kit is installed on the top of the slide cylinder.

[0014] Preferably, the expansion kit includes a lifting cylinder, a lifting rod, a sleeve and an expansion block. The lifting cylinder is installed on the top of the slide, and the output end is arranged upward and connected to the lower end of the lifting rod. The lifting rod movably passes through the sleeve, and a plurality of expansion blocks are movably installed on the upper side wall of the sleeve. The upper end of the lifting rod is conical and movably abuts against the inner side of the expansion block.

[0015] The invention is beneficial in that the active alignment fixture is used in conjunction with the auxiliary alignment fixture to automatically and accurately align the screw sleeve to be welded with the hole on the beam, thereby reducing errors in manual work and improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a thread sleeve welding device according to one embodiment; Figure 2 It is a schematic top view of a thread sleeve welding device; Figure 3 A three-dimensional schematic diagram of the auxiliary alignment fixture; Figure 4 is a schematic side view of an auxiliary alignment fixture; Figure 5 A three-dimensional schematic diagram of the auxiliary alignment fixture from another perspective; Figure 6 This is a schematic diagram of the explosion of the lifting screw; Figure 7 Schematic diagram of the expansion kit explosion. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0018] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] like Figure 1~2 As shown, a screw sleeve welding device includes a positioner 1, a fixture 2, a track 3, an active alignment fixture 4 and an auxiliary alignment fixture 5. Two positioners 1 are arranged opposite to each other, and the distance between the two positioners 1 is adjustable to adapt to beams 100 of different lengths. The fixtures 2 are installed one by one on the opposite side of the positioner 1, and the fixtures 2 clamp the two ends of the beam 100. The beam 100 is provided with a plurality of holes 101 at intervals in a linear manner, specifically, the plurality of holes 101 are arranged in a linear manner, and the holes 101 are arranged vertically, and the distances between two adjacent holes 101 may be unequal. The track 3 is arranged between the two positioners 1 and is located directly below the crossbeam 100. The active alignment fixture 4 is movably mounted on the track 3. The auxiliary alignment fixture 5 is movably mounted below the crossbeam 100. The auxiliary alignment fixture 5 is used to anchor the hole 101. A lifting assembly 6 is installed on the active alignment fixture 4. The lifting assembly 6 is used to clamp the screw sleeve 200, and the screw sleeve 200 is movably passed through the auxiliary alignment fixture 5 and inserted into the hole 101. The active alignment fixture 4 cooperates with the auxiliary alignment fixture 5 so that the screw sleeve 200 is coaxial with the hole 101. Specifically, in the present embodiment, the positioner 1 clamps the crossbeam 100 through the fixture 2, so as to ensure that the crossbeam 100 does not shake during the welding process, has good stability, and ensures welding accuracy. It is understandable that the welding robot (not shown in the figure) is located between the two positioners 1 and is used to weld the screw sleeve 200 inserted into the crossbeam 100. During welding, the bottom of the screw sleeve 200 is flush with the upper end surface of the beam 100, and the screw sleeve 200 and the hole 101 on the beam 100 need to remain coaxial so that the outer circumference of the screw sleeve 200 and the inner circle of the hole 101 can be equal to ensure the accuracy of welding and ensure that each screw sleeve 200 is accurately positioned. Once the screw sleeve 200 is misaligned during welding, it is easy to cause position deviation of the subsequent connecting parts installed through the screw sleeve 200, resulting in a decrease in the yield rate.

[0021] Further, after the screw sleeve 200 and the cross beam 100 are welded, the positioner 1 drives the cross beam 100 to rotate 180 degrees, turns and adjusts the screw sleeve 200 orientation, and facilitates the welding robot to perform welding operations on the gap between the screw sleeve 200 and the lower end surface of the cross beam 100, so that the connection between the two ends of the screw sleeve 200 and the upper and lower end surfaces of the cross beam 100 is welded, and the connection strength is guaranteed. Specifically, the cross beam 100 is provided with a number of holes 101 for accommodating the screw sleeve 200, and the holes 101 are arranged linearly, and the spacing between the holes 101 is set according to actual needs. In order for the screw sleeve 200 to be accurately inserted into the hole 101 during the welding process, the central axis deviation needs to be kept within the threshold range, and the manual insertion of the human has a large error range. When different operators operate, the error control difficulty is relatively high, so it is necessary to use an active alignment fixture 4 and an auxiliary alignment fixture 5 to align the screw sleeve 200 with the central axis of the hole 101.

[0022] Furthermore, the auxiliary alignment fixture 5 is movably installed on the lower end surface of the beam 100, and the auxiliary alignment fixture 5 can move linearly along the beam 100, and the active alignment fixture 4 is installed on the track 3. Before welding, the auxiliary alignment fixture 5 is first displaced on the beam 100 until it is displaced below the hole 101. After the auxiliary alignment fixture 5 confirms the orientation of the hole 101, it stops moving and locates the hole 101. At the same time, the screw sleeve 200 is installed on the lifting assembly 6 by manual or mechanical arm loading, and the active alignment fixture 4 is displaced along the track 3 and moves to the bottom of the auxiliary alignment fixture 5. After the active alignment fixture 4 is aligned with the auxiliary alignment fixture 5, the lifting assembly 6 drives the screw sleeve 200 to move upward, penetrates the auxiliary alignment fixture 5, and is inserted into the hole 101, and welding can be carried out. After welding is completed, the lifting component 6 is reset, and the auxiliary alignment fixture 5 continues to move along the beam 100 to locate the position of the next hole 101, and the active alignment fixture 4 follows the auxiliary alignment fixture 5 to move to locate the position of the screw sleeve 200. In this way, several screw sleeves 200 can be accurately inserted into the holes of the beam 100, avoiding manual work by operators, that is, inserting the screw sleeves 200 into the holes 101 of the beam 100 one by one. During manual welding, large-scale repetitive operations can easily cause the screw sleeves 200 inserted into the holes 101 to deviate and skew, the axis line of the screw sleeve 200 and the hole 101 cannot overlap, and multiple screw sleeves 200 and the hole 101 cannot be coaxial, which will cause the subsequent plug-in spacing inserted into the screw sleeve 200 to be uneven or even skewed, seriously affecting the accuracy of the finished workpiece, the accuracy is not up to standard, and the yield rate is reduced.

[0023] like Figures 1 to 5As shown, the auxiliary alignment fixture 5 includes a bracket 51, a cone 52, a spring column 53, a winding motor 54 and a photoelectric receiver 55. The bracket 51 is movably connected to the crossbeam 100. The middle of the bracket 51 is hollowed out for mounting the cone 52. A plurality of spring columns 53 are arranged around the cone 52. One end of the spring column 53 is connected to the bracket 51, and the other end is connected to the end with a larger diameter of the cone 52. The end with a smaller diameter of the cone 52 is movably inserted into the hole 101. The winding motor 54 is mounted on the bracket 51. The output end of the winding motor 54 is connected to the cone 52 through a pull rope. The photoelectric receiver 55 is mounted on the side of the bracket 51 away from the crossbeam 100, and is used to receive the photoelectric signal emitted by the active alignment fixture 4. Specifically, in this embodiment, the bracket 51 is movably mounted on the lower side of the crossbeam 100, and the bracket 51 can be displaced along the crossbeam 100 under the action of an external force. Specifically, the bracket 51 can be driven to move linearly through a cylinder, a screw rod, or a motor in conjunction with a transmission chain. The bracket 51 is connected to the end of the cone 52 with a larger diameter through the spring column 53, that is, the end of the cone 52 with a smaller diameter is facing upward. In the initial state, the end of the cone 52 with a smaller diameter abuts against the lower end surface of the beam 100, and the spring column 53 is in a compressed state. When the bracket 51 moves linearly, the cone 52 is driven to move linearly synchronously. Several holes 101 are arranged linearly along the beam 100, and the outer diameter of the end of the cone 52 with a smaller diameter is smaller than the inner diameter of the hole 101. When the cone 52 moves to the hole 101, the end of the cone 52 with a smaller diameter is ejected into the hole 101 under the action of the spring column 53. Because the cone 52 is linearly ejected into the hole 101 by the spring column 53, the cone 52 and the central axis of the hole 101 remain coincident. When the screw sleeve 200 passes through the cone 52 and enters the hole 101, the cone 52 can also play a guiding role because the inner diameter of the cone 52 gradually decreases from bottom to top. At this moment, because the end of the cone tube 52 with small diameter is stuck by the hole 101 ports, the cone tube 52 positioning brackets 51 can be used, and the bracket 51 stops displacement. On the side of the bracket 51 facing the active alignment fixture 4, a photoelectric receiver 55 for receiving the active alignment fixture 4 and sending the alignment signal is installed. By the photoelectric receiver 55, the active alignment fixture 4 is guided to be displaced to the auxiliary alignment fixture 5 directly below. At this moment, the lifting assembly 6 can start to lift the screw sleeve 200, and move up. The screw sleeve 200 can enter the hole 101 by the hollowing out of the bracket 51 and the cone tube 52, so that the screw sleeve 200 and the hole 101 are kept coaxially inserted, and it is skew to avoid the screw sleeve 200 from inserting the hole 101, causing welding dislocation. After the welding of the screw sleeve 200 is completed, the lifting assembly 6 is reset, and descends, and withdraws from the cone tube 52, and then the cone tube 52 is pulled out from the hole 101 under the action of the winding motor 54.Specifically, the output end of the winding motor 54 rotates to tighten the pull rope, and then the cone 52 is separated from the hole 101 by the pull rope. When the cone 52 is separated from the hole 101, the auxiliary alignment fixture 5 can continue to move along the beam 100 to the next hole 101 and align it. At this time, the pull rope at the output end of the winding motor 54 is in a relaxed state. Without the support provided by the end face of the beam 100, the cone 52 can be bounced into the hole 101 by the spring column 53, and so on. The auxiliary alignment fixture 5 is used in conjunction with the active alignment fixture 4 to ensure that each screw sleeve 200 to be welded is accurately positioned and aligned with the hole 101 on the beam 100, maintaining the same axis without deviation, which greatly reduces the deviation and dislocation during manual operation and improves welding accuracy.

[0024] like Figures 1 to 5 As shown, the auxiliary alignment fixture 5 also includes a guide column 56. The end of the cone 52 with a larger diameter has an edge. One end of the guide column 56 is connected to the bracket 51, and the other end movably penetrates the edge. Specifically, a plurality of guide columns 56 are arranged vertically. One end of the guide column 56 can be connected to the bracket 51 by welding, and the other end of the guide column 56 movably penetrates the edge of the cone 52. The guide column 56 cooperates with the spring column 53 to play a guiding role, so that when the cone 52 is ejected into or pulled out of the hole 101, it can only move in and out vertically, preventing the cone 52 from being skewed when it is ejected into the hole 101 by the spring column 53, or when the rope is pulled out of the hole 101, so that the cone 52 always maintains a vertical posture. Furthermore, in order to ensure the posture of the cone 52, we can also install a pressure sensor at the end of the cone 52 with a smaller diameter. When the end of the cone 52 with a smaller diameter abuts against the lower end face of the beam 100, the pressure sensor is compressed by the end face of the beam 100, and an electrical signal is generated to the background controller. The controller can control the auxiliary alignment fixture 5 to continue to move along the beam 100. When it moves to above the hole 101, the pressure sensor is no longer under pressure. The background controller then controls the auxiliary alignment fixture 5 to stop moving, and controls the winding motor 54 to loosen the pull rope. The cone 52 can be bounced into the hole 101 under the action of the spring column 53, so that the cone 52 is accurately aligned with the hole 101 and inserted to avoid deviation.

[0025] like Figures 1 to 5As shown, the auxiliary alignment fixture 5 also includes a driving motor 57, a roller 58 and a bearing frame 59. The roller 58 is connected to the bracket 51 through the bearing frame 59. A number of the rollers 58 are arranged on both sides of the beam 100 and are movably abutted against the side walls of the beam 100. Specifically, the beam 100 has grooves on both sides, and a number of rollers 58 are arranged in two rows, which are clamped in the grooves on both sides of the beam 100 to clamp the beam 100 to prevent the auxiliary alignment fixture 5 from falling. One end of the roller 58 is connected to the bracket 51 through the bearing frame 59, and the output end of the driving motor 57 is connected to the roller 58, which can be specifically driven by a chain or a gear. The driving motor 57 drives the roller 58 to rotate, and the auxiliary alignment fixture 5 can move along the beam 100 by itself in a straight line without the need for an external cylinder or an electric push rod to drive the auxiliary alignment fixture 5 to move, which is suitable for beams 100 with longer lengths.

[0026] like Figures 3-5 As shown, a fork 521 is provided at the end with a small diameter of the cone 52, and a ring spring is sleeved on the outer side of the end with a small diameter of the cone 52. Specifically, the end with a small diameter of the cone 52 is provided with a fork 521. After the screw sleeve 200 is inserted into the cone 52, the end with a small diameter of the cone 52 will be expanded, so that the outer peripheral surface of the screw sleeve 200 and the port of the cone 52 are kept in abutment state, so as to avoid the screw sleeve 200 from being unable to be inserted into the cone 52 and being blocked by the end with a small diameter of the cone 52. The ring spring is arranged on the outer side of the fork. When the lifting assembly 6 is separated from the screw sleeve 200, the cone 52 is driven by the winding motor 54 and the pull rope to withdraw from the hole 101. The elastic force of the ring spring and the fork 521 itself is used to restore the end with a small diameter of the cone 52 from the expanded state, so that the cone 52 can be withdrawn from the current hole 101 conveniently, and the end with a small diameter of the cone 52 can be smoothly inserted into the next hole 101.

[0027] like Figures 3-5 As shown, a ball 522 is installed at the end of the cone 52 with a small diameter. When the end of the cone 52 with a small diameter abuts against the lower end surface of the beam 100 and moves, the ball 522 rolls to reduce the friction resistance of the cone 52 when it moves.

[0028] like Figure 1As shown, the active alignment fixture 4 includes a fine-tuning platform 41 and a photoelectric transmitter 42. The fine-tuning platform 41 is movably mounted on the track 3. The output end of the fine-tuning platform 41 is connected to the lifting assembly 6, driving the lifting assembly 6 to move in the X direction or the Y direction. The X direction and the extension direction of the track 3, the Y direction is perpendicular to the X direction. The photoelectric transmitter 42 is mounted on the output end of the fine-tuning platform 41 and surrounds the lifting assembly 6. The photoelectric transmitter 42 and the photoelectric receiver 55 are matched to each other, so that the screw sleeve 200 set on the lifting assembly 6 is aligned with the central axis of the cone 52. Specifically, in this embodiment, the fine-tuning platform 41 is mounted on the track 3, and the track 3 is located directly below the crossbeam 100. The fine-tuning platform 41 can drive the lifting assembly 6 to move along the track 3, so that the displacement direction of the lifting assembly 6 is consistent with the arrangement direction of the holes 101. Because the spacing between the holes 101 is not equal, and the fine-tuning platform 41 is vibrated during the displacement process, the screw sleeve 200 set on the lifting component 6 is not aligned with the hole 101, so the fine-tuning platform 41 is needed to fine-tune the position of the lifting component 6. In order to accurately align, a photoelectric transmitter 42 is installed at the output end of the fine-tuning platform 41. The fine-tuning platform 41 synchronously adjusts the position of the photoelectric transmitter 42 and the lifting component 6. The photoelectric transmitter 42 is used to cooperate with the photoelectric receiver 55 to emit a photoelectric signal, which is received by the photoelectric receiver 55. The background controller starts the photoelectric automatic alignment system. The controller uses the optical image transmission system to capture the image between the photoelectric transmitter 42 and the photoelectric receiver 55, and converts the image into an electrical signal through the photoelectric conversion system for processing. According to the processing result, the controller controls the fine-tuning platform 41 to move, so that the photoelectric transmitter 42 is slightly displaced, and the photoelectric transmitter 42 is guided to automatically align with the photoelectric receiver 55. This is a prior art and will not be described in detail here. The photoelectric transmitter 42 cooperates with the photoelectric receiver 55 to achieve accurate alignment between the screw sleeve 200 on the lifting assembly 6 and the hole 101. Then the lifting assembly 6 drives the screw sleeve 200 to move upward and insert it into the hole 101, and then the welding operation can be carried out.

[0029] like Figure 1 As shown, the lifting assembly 6 includes a lifting screw 61 and a tightening kit 62. The lifting screw 61 is installed on the fine-tuning platform 41, and the tightening kit 62 is installed on the top of the lifting screw 61. The screw sleeve 200 is sleeved on the tightening kit 62. The lifting screw 61 drives the screw sleeve 200 to move up through the tightening kit 62 and insert it into the hole 101. Specifically, in this embodiment, when the screw sleeve 200 is loaded, the tightening kit 62 is in a contracted state. After the screw sleeve 200 is assembled on the tightening kit 62 by a manipulator, the tightening kit 62 tightens the screw sleeve, and the lifting screw 61 drives the tightening kit 62 to rise, so that the screw sleeve 200 is inserted into the hole 101, and the screw sleeve 200 is tightened to avoid rotation displacement of the screw sleeve 200 during welding.

[0030] like Figure 6 As shown, the lifting screw 61 includes a lifting motor 611, a screw body 612, a stand 613 and a slide 614. The lifting motor 611 is installed on the fine-tuning platform 41, and the output end faces upward. The two ends of the screw body 612 are movably connected to the stand 613. The output end of the lifting motor 611 is connected to the screw body 612, driving the screw body 612 to rotate. The slide 614 is movably connected to the screw body 612 and rises and falls along the stand 613. The expansion kit 62 is installed on the top of the slide 614. Specifically, the lifting motor 611 can be connected to the screw body 612 through a coupling to drive the screw body 612 to rotate. When the screw body 612 rotates, the sleeve 614 threadedly connected thereto can move up and down, driving the expansion kit 62 to rise and fall. The screw lifting technology is an existing technology and will not be described in detail here.

[0031] like Figure 7 As shown, the tightening kit 62 includes a lifting cylinder 621, a lifting rod 622, a sleeve 623 and a tightening block 624. The lifting cylinder 621 is installed on the top of the slide 614, and the output end is set upward and connected to the lower end of the lifting rod 622. The lifting rod 622 movably passes through the sleeve 623. A plurality of tightening blocks 624 are movably installed on the upper side wall of the sleeve 623. The upper end of the lifting rod 622 is conical and movably abuts against the inner side of the tightening block 624. Specifically, when the lifting cylinder 621 drives the lifting rod 622 to rise, the cone head at the upper end of the lifting rod 622 abuts against the inner side of the tightening block 624, and slowly expands the tightening block 624 outward along the radial direction of the sleeve 623, thereby tightening the screw sleeve 200. When the expansion is completed, the lifting rod 622 descends and separates from the expansion block 624. The expansion block 624 can be reset and separated from the screw sleeve 200 under the action of the spring force or the annular spring force of the outer sleeve, and the expansion sleeve 62 can be separated from the screw sleeve 200.

[0032] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A threaded sleeve welding device, characterized in that: It includes a positioner, a fixture, a track, an active alignment fixture and an auxiliary alignment fixture. The two positioners are arranged opposite to each other, and the distance between the two positioners is adjustable. The fixtures are installed on the opposite side of the positioners in a one-to-one correspondence. The fixtures clamp the two ends of the beam. A number of holes are linearly spaced on the beam. The track is arranged between the two positioners and directly below the beam. The active alignment fixture is movably installed on the track, and the auxiliary alignment fixture is movably installed below the beam. The auxiliary alignment fixture is used to anchor the hole. A lifting component is installed on the active alignment fixture. The lifting component is used to clamp the screw sleeve, and the screw sleeve is movably passed through the auxiliary alignment fixture and inserted into the hole. The active alignment fixture cooperates with the auxiliary alignment fixture so that the screw sleeve and the hole are coaxial.

2. A threaded sleeve welding device as claimed in claim 1, characterized in that: The auxiliary alignment fixture includes a bracket, a cone, a spring column, a winding motor and a photoelectric receiver. The bracket is movably connected to the crossbeam. The middle of the bracket is hollowed out for installing the cone. A number of spring columns are arranged around the cone. One end of the spring column is connected to the bracket, and the other end is connected to the end of the cone with a larger diameter. The end of the cone with a smaller diameter is movably inserted into the hole. The winding motor is installed on the bracket, and the output end of the winding motor is connected to the cone through a pull rope. The photoelectric receiver is installed on the side of the bracket away from the crossbeam, and is used to receive the photoelectric signal emitted by the active alignment fixture.

3. A threaded sleeve welding device as claimed in claim 2, characterized in that: The auxiliary alignment fixture also includes a guide column. The end of the cone with a larger diameter has an edge. One end of the guide column is connected to the bracket, and the other end movably passes through the edge.

4. A threaded sleeve welding device as claimed in claim 3, characterized in that: The auxiliary alignment fixture also includes a driving motor, a roller and a bearing frame. The roller is connected to the bracket through the bearing frame. A plurality of the rollers are arranged on both sides of the beam and movably abut against the side walls of the beam.

5. A threaded sleeve welding device as claimed in claim 2, characterized in that: The end of the cone cylinder with a smaller diameter is provided with a fork, and the outer side of the end of the cone cylinder with a smaller diameter is sleeved with a ring spring.

6. A threaded sleeve welding device as claimed in claim 5, characterized in that: A ball is installed at the end port of the cone with a small diameter.

7. A threaded sleeve welding device as claimed in claim 2, characterized in that: The active alignment fixture includes a fine-tuning platform and a photoelectric transmitter. The fine-tuning platform is movably installed on a track. The output end of the fine-tuning platform is connected to a lifting assembly to drive the lifting assembly to move along the X or Y direction. The photoelectric transmitter is installed on the output end of the fine-tuning platform and surrounds the lifting assembly. The photoelectric transmitter corresponds to the photoelectric receiver so that the screw sleeve on the lifting assembly is aligned with the central axis of the cone.

8. A threaded sleeve welding device as claimed in claim 7, characterized in that: The lifting assembly includes a lifting screw and a tightening kit. The lifting screw is installed on the fine-tuning platform, the tightening kit is installed on the top of the lifting screw, the screw sleeve is sleeved on the tightening kit, and the lifting screw drives the screw sleeve to move up through the tightening kit and is inserted into the hole.

9. A threaded sleeve welding device as claimed in claim 8, characterized in that: The lifting screw includes a lifting motor, a screw body, a vertical frame and a slide cylinder. The lifting motor is installed on the fine-tuning platform with the output end facing upward. Both ends of the screw body are movably connected to the vertical frame. The output end of the lifting motor is connected to the screw body to drive the screw body to rotate. The slide cylinder is movably connected to the screw body and rises and falls along the vertical frame. The tightening kit is installed on the top of the slide cylinder.

10. A threaded sleeve welding device as claimed in claim 8, characterized in that: The expansion kit includes a lifting cylinder, a lifting rod, a sleeve and a tightening block. The lifting cylinder is installed on the top of the slide, and the output end is set upward and connected to the lower end of the lifting rod. The lifting rod movably passes through the sleeve, and a plurality of tightening blocks are movably installed on the upper side wall of the sleeve. The upper end of the lifting rod is conical and movably abuts against the inner side of the tightening block.

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