A rapid positioning welding device and positioning method for hollow guide rails

Abstract

This invention relates to an automatic / semi-automatic arc welding technology, specifically a hollow guide rail rapid positioning welding device and method. It includes a base, a roller conveyor mounted on the base, and a hollow guide rail body driven by the roller conveyor. It also includes a positioning component mounted on the base for lifting and positioning the weld seam of the hollow guide rail body. Through overall coordinated design, intermittent lifting and lowering of the push rod can be achieved. When the push rod moves up and down, the connected positioning component moves up and down synchronously, thereby precisely lifting and positioning the weld seam of the hollow guide rail body. This mitigates the undulating height difference caused by sags, keeping the height difference between the peaks and troughs of the undulations within the range that the weld pool can extend and melt. The lifting action of the push rod and positioning component, driven by a drive component, effectively avoids this phenomenon, ensuring a smooth weld seam and providing a good foundation for welding operations.

Description

TECHNICAL FIELD

[0001] The present application relates to an automatic semi-automatic electric arc technology, in particular to a hollow rail rapid positioning welding device and a positioning method. BACKGROUND

[0002] Hollow rail is a structural member formed by step-by-step cold rolling of sheet material and finally by welding, which usually uses high-strength metal plate as raw material, and through multiple cold rolling processes, the plate is gradually processed into the required cross-sectional shape. This processing method not only can accurately control the size and shape of the rail, but also can effectively improve the utilization rate of materials and reduce waste. After cold rolling, the rail formed by bending the plate / sheet metal is connected together at the enclosed butt joint gap through precise welding process to form a hollow structure. This hollow design not only reduces the weight of the rail, but also enhances the stability and load-carrying capacity of the structure, so that it can maintain good performance under heavy load. Hollow rail is widely used in various mechanical transmission and support systems.

[0003] In the production process of hollow rail, metal plate is the core raw material, which is cut into strip-shaped plate of predetermined width size after heat treatment. The purpose of heat treatment is to improve the internal crystal phase structure of the metal material. During heat treatment, transportation and storage, especially after heat treatment, a layer of black skin or oxide skin will inevitably form on the surface of the metal, which adheres to the metal surface and affects the subsequent processing technology. The presence of oxide skin not only reduces the surface quality of the metal plate, but also may cause a series of problems in the subsequent cold rolling process.

[0004] In theory, the surface of the metal material can be polished to eliminate the black skin before rolling and shaping. However, in actual production process, the metal plate is not polished before the cold rolling and shaping process. The reason is that the polishing process is high in cost and low in efficiency, which prolongs the production cycle. The most important reason is that after the cold rolling and shaping of the hollow rail, weld scars and weld bumps will be formed at the enclosed gap during the precise welding process. Therefore, after welding, the rail must be polished to ensure the surface quality of the final product. Therefore, the pre-polishing before shaping and the secondary polishing after welding form repetitive work. In the production process, considering the time period cost, production cost and other economic factors, the plate before cold rolling is generally not polished for cost control purposes.

[0005] Because the plate is not polished before cold rolling, the plate is shaped in the condition of residual black skin on the surface during the cold rolling process; the cold rolling process is to sequentially roll the metal plate by multiple sets of rolling equipment to shape, and the metal plate is plastically deformed under the action of strong pressure during the rolling process, and is gradually pressed into the required shape.

[0006] The principle of rolling is to use the plastic deformation ability of metal at low temperature to make the metal plate reach the required size and shape without breaking; in order to ensure that the metal material will not break, the shaping process is divided into multiple stages, and the total deformation is divided into multiple passes according to the stages, so as to avoid breaking due to too large deformation in one pass. In the multiple pass process, the principle of gradually reducing the size is followed; in this process, the black skin attached to the surface of the plate will make the plate sink during the rolling process, so that the finally shaped guide rail presents continuous or discontinuous undulation in long wave shape, which brings the influence that the gap between the two sides of the ideal state is changed from alignment to mutual misalignment.

[0007] At the joint gap part, these uneven deformation areas will form asymmetric long wave-shaped depressions on both sides of the gap; in this case, there are obvious defects in directly using continuous welding; specifically, continuous welding requires that the welding surface be flat and stable to ensure that the welding pool can uniformly flow into the gap; however, due to the existence of the above asymmetric long wave-shaped depressions, if continuous welding is directly performed, the welding pool may not be able to melt the depressions, which will cause defects in the depressions. In this way, not only the welding strength will be reduced, but also the overall structural integrity, bearing strength and service life of the hollow guide rail may be affected. SUMMARY

[0008] The purpose of the present application is to provide a hollow guide rail rapid positioning welding device and positioning method to solve the problems raised in the background art.

[0009] To achieve the above purpose, the present application provides the following technical scheme:

[0010] A hollow guide rail rapid positioning welding device, comprising a base, a roller transmission member mounted on the base, and a hollow guide rail body driven on the roller transmission member, further comprising:

[0011] A positioning member mounted on the base for lifting and positioning the welding seam of the hollow guide rail body, a gear being rotatably arranged on the positioning member, and a top rod being mounted on the positioning member;

[0012] A welding member is installed on the base for welding the welding seam of the hollow rail body after the positioning of the hollow rail body by the positioning member, and the gear is connected with the welding member for driving the welding member to descend and weld the welding seam of the hollow rail body when the positioning member positions the hollow rail body.

[0013] A driving member is installed on the base, the driving member is connected with the ejector rod, and the driving member is connected with the roller transmission member through a separation locking member. When the driving member operates, the roller transmission member is driven to convey the hollow rail body, and the ejector rod is intermittently driven to ascend and descend, and the separation locking member is controlled to perform the separation locking operation, so that the hollow rail body is intermittently conveyed and the welding seam is positioned.

[0014] The driving member includes a motor installed on the base, a Malta mechanism installed on the output shaft of the motor, and a connecting shaft fixed on the Malta mechanism.

[0015] The connecting shaft is connected with a bearing rotating seat installed on the base, and a first driving wheel is fixed on one end of the connecting shaft.

[0016] The Malta mechanism includes a driving disc fixed on the output shaft of the motor, a fixed disc fixed on the driving disc, a groove wheel connected with the driving disc, and a cam fixed on the groove wheel.

[0017] The fixed disc is fixedly connected with the other end of the connecting shaft, the cam is rotatably connected with a fixed frame installed on the base, the edge of the cam abuts against the end of the ejector rod, and the lifting action of the ejector rod is realized by the rotation of the cam.

[0018] The positioning member includes a first frame installed on the base, a first sliding plate sliding on the first frame, a jacking frame connected with the first sliding plate, and a T-shaped plate fixed on the first sliding plate.

[0019] A first rack engaged with the gear is further fixed on the first sliding plate and rotatably connected with the top of the first frame.

[0020] One end of the ejector rod is fixed on the bottom of the jacking frame, and the ejector rod is slidingly inserted into the bottom of the first frame.

[0021] The first limiting disc is fixed on the top rod, and the first limiting disc is in abutment with a mounting frame mounted on the base, a first spring is sleeved on the top rod below the mounting frame, one end of the first spring is in abutment with the mounting frame, and the other end is in abutment with a second limiting disc fixed on the top rod.

[0022] The welding device comprises a second frame mounted on the base, a second sliding plate sliding on the second frame, and a welding machine mounted on the second sliding plate.

[0023] The second rack engaged with the gear is further fixed on one side of the second sliding plate.

[0024] The roller transmission member comprises a transmission frame mounted on the base and a transmission shaft rotating on the transmission frame.

[0025] The adjusting plate sliding on the transmission frame and the abutment wheel rotating on the adjusting plate are further included, and the abutment wheel is connected with the transmission shaft through the bevel gear set.

[0026] The separation locking member comprises a gas cylinder mounted on the transmission frame, a sliding rod fixed on the transmission frame below the gas cylinder, a fixed block fixed on the top of the piston rod of the gas cylinder and slidingly connected with the sliding rod, and a clamping wheel and a brake wheel fixed on both ends of the fixed block.

[0027] The conical brake seat fixed with one end of the transmission shaft, the first clamping seat fixed on the conical brake seat, and the separation mechanism connected with the first clamping seat are further included, and the brake wheel is in abutment with the conical brake seat.

[0028] The separation mechanism comprises a second clamping seat engaged with the first clamping seat, a shifting seat fixed on the second clamping seat, and a driving shaft fixedly connected with the shifting seat, and the shifting seat is rotatingly connected with the clamping wheel.

[0029] The second spring sleeved on the driving shaft, the second driving wheel slidingly connected with the driving shaft and drivingly connected with the first driving wheel through the transmission belt, and the rotating frame rotatingly connected with the driving shaft and mounted on the base are further included.

[0030] The positioning method using the hollow guide rail quick positioning welding device comprises the following steps:

[0031] Step one: start the motor, convert the continuous rotation of the motor 2 into intermittent motion through the Malta mechanism, drive the ejector rod to perform intermittent lifting action, and drive the first drive wheel to rotate through the connecting shaft;

[0032] Step two: when the ejector rod is in the descending position, the clamping wheel is clamped with the first clamping seat, and the brake wheel is separated from the conical brake seat, thereby releasing the locking of the transmission shaft, so that the transmission shaft of the roller pressing transmission member can rotate freely, and through the cooperation of the abutting wheel and the bevel gear set, the hollow guide rail body is forwarded by a distance;

[0033] Step three: when the ejector rod rises, the cylinder acts, so that the clamping wheel is separated from the first clamping seat, and the brake wheel is in abutment with the conical brake seat, thereby locking the transmission shaft, the edge of the cam pushes the ejector rod to move upward, the ejector rod drives the first sliding plate to slide upward along the first frame through the jacking frame, so that the T-shaped plate lifts the weld of the hollow guide rail body to the positioning position, so that the weld of the hollow guide rail body is flat, and the first rack is engaged with the gear, thereby driving the gear to rotate;

[0034] Step four: the rotation of the gear drives the second sliding plate to slide downward along the second frame through the engagement with the second rack, so that the welding machine descends to the weld, and the weld of the hollow guide rail body is positioned and spot welded;

[0035] Step five: after welding, the ejector rod descends, the cylinder resets, the fixed block reversely slides along the slide rod, so that the clamping wheel is re-clamped with the first clamping seat, and the brake wheel is separated from the conical brake seat, thereby unlocking the transmission shaft, and the device is ready for the next welding positioning cycle.

[0036] Compared with the prior art, the beneficial effects of the present application are:

[0037] Through the overall cooperation design, the intermittent lifting action of the ejector rod can be realized, and when the ejector rod moves up and down, the positioning member connected therewith moves up and down synchronously, thereby accurately lifting and positioning the weld of the hollow guide rail body, weakening the wave fluctuation height difference caused by the subsidence, and as far as possible, the wave peak and wave trough height difference of the wave fluctuation is controlled within the range that the welding pool can be extended to flow and melt, so that the lifting action of the ejector rod and the positioning member driven by the driving member can effectively avoid this phenomenon, and ensure the flatness of the weld, thereby providing a good basis for welding operation.

[0038] After the positioning member lifts the weld of the hollow guide rail body to the appropriate position, the welding member closely cooperates to perform spot welding operation on the lifted hollow guide rail body, and through the spot welding mode, the length of the wave-like fluctuation is shortened, so that the large-span fluctuation becomes small-amplitude fluctuation; and after the spot welding is cooled and firmly bonded together, the wave fluctuation can be corrected and corrected section by section, and after the wave fluctuation is corrected section by section, a controllable weld height difference environment can be provided for subsequent continuous precision welding processing. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the hollow guide rail rapid positioning welding device.

[0040] Figure 2 This is a structural schematic diagram of the hollow guide rail rapid positioning welding device from another angle.

[0041] Figure 3 This is a partial structural diagram of a hollow guide rail rapid positioning welding device.

[0042] Figure 4 for Figure 3 A schematic diagram of the structure from another direction.

[0043] Figure 5 This is a schematic diagram of the drive component in a hollow guide rail rapid positioning welding device.

[0044] Figure 6 This is a schematic diagram of the Maltese mechanism in a hollow guide rail rapid positioning welding device.

[0045] Figure 7 This is a schematic diagram of the positioning and welding components in a hollow guide rail rapid positioning welding device.

[0046] Figure 8 This is a schematic diagram of the positioning component in a hollow guide rail rapid positioning welding device.

[0047] Figure 9 This is a schematic diagram of the structure of the welded parts in the hollow guide rail rapid positioning welding device.

[0048] Figure 10 This is a schematic diagram of the separation and locking components in a hollow guide rail rapid positioning welding device.

[0049] Figure 11 This is a structural diagram of the other side of the locking component in a rapid positioning welding device for hollow guide rails.

[0050] Figure 12 This is a structural diagram showing the disassembly of the locking component in a rapid positioning welding device for hollow guide rails.

[0051] Figure 13 This is a schematic diagram of the T-shaped plate in the hollow guide rail rapid positioning welding device.

[0052] In the figure: 1, base; 2, motor; 3, driving dial; 4, fixed disc; 5, grooved wheel; 6, cam; 7, fixed frame; 8, first driving wheel; 9, hollow guide rail main body; 10, first frame; 11, first sliding plate; 12, jacking frame; 13, T-shaped plate; 14, jacking rod; 15, first limiting disc; 16, mounting frame; 17, first spring; 18, second limiting disc; 19, first rack; 20, gear; 21, second frame; 22, second sliding plate; 23, welding machine; 24, second rack; 25, transmission frame; 26, transmission shaft; 27, abutting wheel; 28, air cylinder; 29, sliding rod; 30, fixed block; 31, clamping wheel; 32, brake wheel; 33, conical brake seat; 34, first clamping seat; 35, second clamping seat; 36, actuating seat; 37, second spring; 38, second driving wheel; 39, rotating frame. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0054] Please refer to Figures 1-4 In the embodiments of the present application, a hollow guide rail rapid positioning welding device comprises a base 1, a roller transmission member mounted on the base 1, and a hollow guide rail main body 9 driven on the roller transmission member, and further comprises:

[0055] A positioning member mounted on the base 1 for lifting and positioning the weld of the hollow guide rail main body 9, wherein a gear 20 is rotatably arranged on the positioning member, and a jacking rod 14 is mounted on the positioning member;

[0056] A welding member mounted on the base 1 for welding the weld of the hollow guide rail main body 9 after lifting and positioning, wherein the gear 20 is connected with the welding member, and is used for lowering the welding member to spot weld the weld of the hollow guide rail main body 9 when the positioning member lifts and positions the hollow guide rail main body 9;

[0057] A driving member mounted on the base 1, wherein the driving member is connected with the jacking rod 14, and the driving member and the roller transmission member are connected through a separation locking member, and when the driving member acts, the roller transmission member drives the hollow guide rail main body 9 to perform a conveying action through the separation locking member, and the jacking rod 14 is intermittently driven to ascend and descend, and the separation locking member is controlled to perform a separation locking action, so as to intermittently convey the hollow guide rail main body 9 and position the weld.

[0058] In this embodiment, the device is used for spot welding the weld seam of the hollow rail body 9 before continuous welding of the hollow rail body 9, avoiding uneven weld seams that affect the quality of subsequent continuous welding. The base 1 serves as the support structure of the entire device, ensuring the stability and rigidity of the device. The roller transmission is installed on the base 1 and is responsible for smoothly transporting the hollow rail body 9 to the welding position.

[0059] Through the positioning member installed on the base 1, the weld seam of the hollow rail body 9 can be precisely lifted and positioned. The gear 20 on the positioning member cooperates with the top rod 14, allowing the weld seam to be accurately adjusted and positioned at the welding position. This process not only improves the welding precision, but also effectively avoids problems caused by residual attachments on the surface of the metal plate during multiple cold rolling processes. During the cold rolling process, some attachments may remain on the surface of the metal plate. If these attachments are not cleaned properly, they may form pits in the weld seam area of the formed hollow rail body 9, affecting the welding quality. However, the device can effectively reduce this risk by precise lifting and positioning, ensuring the flatness of the weld seam area.

[0060] The connection of the gear 20 and the welding member allows the welding member to be precisely lowered to the weld seam for spot welding while the positioning member is lifting and positioning the hollow rail body 9. By intermittently spot welding the weld seam, the hollow rail body 9 after lifting and positioning can be firmly connected at the weld seam area. During the subsequent cold pressing process and continuous welding process, this design ensures that the weld seam area is in good butt joint state, and does not affect the subsequent process due to inaccurate positioning or poor welding quality.

[0061] Through the connection with the top rod 14, the driving member can accurately control the lifting action of the top rod 14. At the same time, the separation and locking member design between the driving member and the roller transmission allows flexible control of the conveying action and separation and locking state of the roller transmission when the driving member is in action. This design realizes the intermittent conveying and weld seam positioning of the hollow rail body 9, ensuring the efficiency and accuracy of the welding process.

[0062] Please refer to Figure 5 and Figure 6 As a further scheme of the present application, the driving member includes a motor 2 installed on the base 1, a Malta mechanism installed on the output shaft of the motor 2, and a connecting shaft fixed to the Malta mechanism.

[0063] The connecting shaft is connected to the bearing rotating seat installed on the base 1, and one end of the connecting shaft is fixed with a first driving wheel 8.

[0064] The Malta mechanism comprises a driving dial 3 fixed on the output shaft of the motor 2, a fixed disc 4 fixed on the driving dial 3, a groove wheel 5 connected with the driving dial 3, and a cam 6 fixed on the groove wheel 5;

[0065] The fixed disc 4 is fixedly connected with the other end of the connecting shaft, the cam 6 is rotationally connected with a fixed frame 7 installed on the base 1, the edge of the cam 6 abuts against the end of the top rod 14, and the lifting action of the top rod 14 is realized through the rotation of the cam 6.

[0066] In this embodiment, the design of the driving member utilizes the combination of the motor 2 and the Malta mechanism, realizes the accurate control of the lifting action of the top rod 14, and provides power support for the intermittent conveying of the roller conveying member. The motor 2 serves as a power source and is installed on the base 1. The output shaft of the motor 2 is provided with the Malta mechanism. This mechanism can convert the continuous rotary motion of the motor 2 into intermittent motion output, so as to realize the accurate control of the top rod 14.

[0067] The core components of the Malta mechanism comprise the driving dial 3, the fixed disc 4, the groove wheel 5 and the cam 6. The driving dial 3 is directly connected with the output shaft of the motor 2 and rotates with the rotation of the motor 2. The fixed disc 4 is fixedly connected with the driving dial 3 and serves to stabilize and support. The groove wheel 5 is connected with the driving dial 3. The continuous motion of the driving dial 3 can be converted into intermittent rotary motion through the groove wheel 5. This intermittent motion is transmitted to the cam 6 through the connecting shaft, so as to drive the lifting of the top rod 14.

[0068] The cam 6 abuts against the end of the top rod 14 and can accurately control the lifting action of the top rod 14 through its rotation. When the cam 6 rotates to the protruding position, the edge of the cam 6 pushes the top rod 14 to rise, so as to realize the pulling positioning of the weld of the hollow guide rail body 9. When the cam 6 continues to rotate to the position away from the protruding position, the top rod 14 will descend to release the weld, so as to perform the welding operation.

[0069] In addition, the other end of the connecting shaft is fixedly connected with the fixed disc 4 and is installed on the base 1 through a bearing rotating seat, so as to ensure the stability and reliability of the whole driving member. The one end of the connecting shaft is also fixed with the first driving wheel 8. Through the transmission belt, power is transmitted to the roller conveying member, so as to realize the intermittent conveying of the hollow guide rail body 9.

[0070] Please refer to Figure 7 , Figure 8 and Figure 13 As a further scheme of the present application, the positioning member comprises a first frame 10 installed on the base 1, a first sliding plate 11 sliding on the first frame 10, a jacking frame 12 connected with the first sliding plate 11, and a T-shaped plate 13 fixed on the first sliding plate 11.

[0071] Also included is a first rack 19 fixed on the first sliding plate 11 and engaged with the gear 20 rotatingly connected to the top of the first frame 10.

[0072] In this embodiment, the structure of the entire positioning device is stably supported by the first frame 10 installed on the base 1, the first sliding plate 11 slides in the first frame 10, and the flexibility of the movement provides a basis for the accurate positioning of the weld, the jacking frame 12 is connected to the first sliding plate 11 and can move up and down with the movement of the first sliding plate 11, thereby driving the T-shaped plate 13 to pull and position the weld of the hollow guide rail body 9, the T-shaped plate 13 is inverted T-shaped, the end part is located in the cavity of the hollow guide rail body 9, and the vertical part is located at the weld of the hollow guide rail body 9, that is, the splicing joint of the hollow guide rail body 9, and the thickness of the vertical part is the same as the size of the weld of the hollow guide rail body 9, without affecting the normal conveying of the hollow guide rail body 9;

[0073] Specifically, the hollow guide rail body 9 is a hollow structure with a cavity space inside, the horizontal part of the T-shaped plate 13 is designed to match the size of the cavity of the hollow guide rail body 9, and can be accurately inserted, during installation, the horizontal part of the T-shaped plate 13 is inserted from the end of the hollow guide rail body 9, and the end of the hollow guide rail body 9 is initially open to allow the horizontal part of the T-shaped plate 13 to smoothly enter the cavity inside, in addition, the vertical part of the T-shaped plate 13 is located at the weld of the hollow guide rail body 9, that is, the splicing joint position of the hollow guide rail body 9, and the thickness of the vertical part of the T-shaped plate 13 is exactly the same as the size of the weld of the hollow guide rail body 9, this design makes the T-shaped plate 13 after installation does not have any impact on the normal conveying function of the hollow guide rail body 9, that is, the vertical part of the T-shaped plate 13 can perfectly embed in the weld, without changing the integrity of the internal space and conveying channel of the hollow guide rail body 9, before welding, the horizontal part of the T-shaped plate 13 is already inside the cavity of the hollow guide rail body 9;

[0074] The first rack 19 is fixed on the first sliding plate 11 and is engaged with the gear 20 installed on the top of the first frame 10, and the transmission structure can convert the linear motion of the first rack 19 into the rotary motion of the gear 20, so that the lifting of the lifting frame 12 and the T-shaped plate 13 drives the gear 20 to rotate, and when the T-shaped plate 13 is lifted, the welding seam of the hollow guide rail body 9 can be pulled up to avoid the welding seam of the hollow guide rail body 9 being uneven due to the attachment during the cold rolling process, and when the T-shaped plate 13 is lifted, the recessed part is pulled up and spot welded for positioning, and the lifting of the top rod 14 drives the first sliding plate 11 to slide up and down along the first frame 10, thereby pushing the lifting frame 12 and the T-shaped plate 13 to rise or fall, and the welding seam of the hollow guide rail body 9 is accurately positioned to the position required for welding.

[0075] Please refer to Figure 8 As a further scheme of the present application, one end of the top rod 14 is fixed at the bottom of the lifting frame 12, and the top rod 14 is slidingly inserted into the bottom of the first frame 10.

[0076] The first limiting disc 15 is fixed on the top rod 14, and the first limiting disc 15 is in abutment with the mounting bracket 16 installed on the base 1, and the first spring 17 is sleeved on the top rod 14 below the mounting bracket 16, one end of the first spring 17 is in abutment with the mounting bracket 16, and the other end is in abutment with the second limiting disc 18 fixed on the top rod 14.

[0077] In this embodiment, one end of the top rod 14 is fixed at the bottom of the lifting frame 12, and drives the lifting frame 12 to move up and down, thereby realizing the pulling and releasing of the welding seam of the hollow guide rail body 9, and the other end of the top rod 14 is slidingly inserted into the bottom of the first frame 10 and is in abutment with the outer edge of the cam 6, and this structure design provides accurate guidance for the vertical motion of the top rod 14, ensuring smooth and no deviation of the action;

[0078] The first limiting disc 15 is fixed on the top rod 14 and abuts against the mounting frame 16 installed on the base 1, thereby playing a mechanical limiting role, preventing the top rod 14 from excessively rising or falling during movement, thereby avoiding an extreme position that may cause damage to the device, the limiting design not only protects the top rod 14 itself but also ensures the accuracy of the entire welding positioning process, and the first spring 17 is sleeved on the top rod 14 below the mounting frame 16, one end of the first spring 17 abuts against the mounting frame 16, and the other end abuts against the second limiting disc 18 fixed on the top rod 14, and the spring structure provides the top rod 14 with an elastic reset function, when the top rod 14 is lifted by the cam 6, the first spring 17 can store energy and release when the top rod 14 is separated from the abutting position of the protruding part of the cam 6, so that the top rod 14 can quickly return to the initial position, and the elastic reset mechanism improves the flexibility of the action of the top rod 14 and ensures accurate welding seam positioning.

[0079] Please refer to Figure 7 and Figure 9 As a further scheme of the present application, the welding member comprises a second frame 21 installed on the base 1, a second sliding plate 22 sliding on the second frame 21, and a welding machine 23 installed on the second sliding plate 22.

[0080] Further comprising a second rack 24 fixed on one side of the second sliding plate 22 and engaged with the gear 20.

[0081] In this embodiment, the welding member is installed on the base 1 through the second frame 21, thereby providing stable support for the entire welding operation, and the second sliding plate 22 slides in the second frame 21, and the sliding design enables the welding machine 23 to flexibly adjust the position according to the welding requirement, thereby achieving accurate welding of the welding seam of the hollow guide rail body 9.

[0082] The welding machine 23 is installed on the second sliding plate 22 and moves with the movement of the second sliding plate, thereby ensuring that the welding operation can accurately act on the welding seam position, the second rack 24 is fixed on one side of the second sliding plate 22 and engaged with the gear 20, and the transmission structure can convert the rotary motion of the gear 20 into the linear motion of the second sliding plate 22, thereby achieving accurate lifting of the welding machine 23, when the T-shaped plate 13 is lifted to position the hollow guide rail body 9, the welding machine 23 will descend with the second sliding plate 22 to spot weld the welding seam of the hollow guide rail body 9 after the T-shaped plate 13 is positioned, so that the welding seam of the hollow guide rail body 9 is well connected and deformation is avoided in subsequent processes.

[0083] Please refer to Figure 10 and Figure 11, as a further scheme of the present application, the roller transmission member comprises a transmission frame 25 mounted on the base 1 and a transmission shaft 26 rotating on the transmission frame 25;

[0084] Further comprising an adjusting plate slidingly adjusted on the transmission frame 25 and a contact wheel 27 rotating on the adjusting plate, the contact wheel 27 is connected with the transmission shaft 26 through a bevel gear set.

[0085] In this embodiment, the transmission frame 25 is mounted on the base 1, constituting the main frame of the roller transmission member, providing stable support for the entire conveying system, and the transmission shaft 26 is mounted on the transmission frame 25, ensuring that the hollow rail body 9 can be smoothly conveyed forward;

[0086] In order to realize accurate conveying and position adjustment of the hollow rail body 9, the roller transmission member further comprises a slidingly adjusted adjusting plate mounted on the transmission frame 25, which can slide along the transmission frame 25 as needed to adjust the position of the upper part, suitable for the abutting transmission of hollow rail bodies 9 of different width sizes, and the contact wheel 27 is mounted on the adjusting plate, which provides stable support and conveying power through contact with the hollow rail body 9, and the rotation of the contact wheel 27 is connected with the transmission shaft 26 through a bevel gear set, which allows the rotation of the transmission shaft 26 to be transmitted to the contact wheel 27 through the bevel gear set, thereby driving the hollow rail body 9 to move in the conveying direction.

[0087] Please refer to Figures 10-12 , as a further scheme of the present application, the separation locking member comprises a pneumatic cylinder 28 mounted on the transmission frame 25, a slide rod 29 fixed on the transmission frame 25 below the pneumatic cylinder 28, a fixed block 30 fixed on the top of the piston rod of the pneumatic cylinder 28 and in sliding connection with the slide rod 29, and a clamping wheel 31 and a brake wheel 32 fixed on both ends of the fixed block 30;

[0088] Further comprising a conical brake seat 33 cooperating with the brake wheel 32 and fixed at one end of the transmission shaft 26, a first clamping seat 34 fixed on the conical brake seat 33, and a separation mechanism connected with the first clamping seat 34, the brake wheel 32 and the conical brake seat 33 are adapted to abut.

[0089] The separation mechanism comprises a second clamping seat 35 engaged with the first clamping seat 34, a toggle seat 36 fixed on the second clamping seat 35, and a drive shaft fixedly connected with the toggle seat 36, the toggle seat 36 is in rotational connection with the clamping wheel 31;

[0090] A second spring 37 is sleeved on the driving shaft, a second driving wheel 38 is in sliding transmission connection with the driving shaft, and a rotating frame 39 is in rotary connection with the driving shaft and is installed on the base 1. The second driving wheel 38 is connected with the first driving wheel 8 through a transmission belt.

[0091] In this embodiment, the separation locking piece can realize flexible control of the roller pressing transmission member through the cylinder 28 installed on the transmission frame 25. The piston rod top of the cylinder 28 is connected with a fixing block 30 which is in sliding connection with the transmission frame 25 through a sliding rod 29, so as to ensure the stability and accuracy of the action. The fixing block 30 is fixed with a clamping wheel 31 and a brake wheel 32 at two ends respectively. The brake wheel 32 is in abutting fit with a conical brake seat 33 which is fixed at one end of the transmission shaft 26. This design makes the brake wheel 32 separate from or abut against the conical brake seat 33 when the cylinder 28 acts, so as to realize the locking or releasing of the transmission shaft 26. This locking mechanism ensures that the roller pressing transmission member can be accurately stopped at the required position during welding, avoiding the deviation of the welding position caused by the accidental rotation of the transmission shaft 26.

[0092] The design of the separation mechanism further enhances the function of the separation locking piece. The second clamping seat 35 is in engagement with the first clamping seat 34. The driving seat 36 is fixed on the second clamping seat 35 and connected with the driving shaft. The driving seat 36 is also in rotary connection with the clamping wheel 31. This design makes it possible to control the position of the clamping wheel 31 through the action of the driving seat 36 when needed, so as to realize further control of the roller pressing transmission member. When the cylinder 28 extends and acts, it can drive the driving seat 36 to move away from the first clamping seat 34, so that the first clamping seat 34 and the second clamping seat 35 are disengaged. At this time, the transmission is disconnected, and during this process, the conical brake seat 33 abuts against the brake wheel 32 to lock the transmission shaft 26, avoiding the continuous rotation of the transmission shaft 26 due to inertia.

[0093] In addition, the separation mechanism also includes a second spring 37 sleeved on the driving shaft, which provides elastic return function for the action of the separation mechanism. The second driving wheel 38 is connected with the first driving wheel 8 through a transmission belt, ensuring the stable transmission of power. The rotating frame 39 is installed on the base 1, providing stable support for the whole separation mechanism.

[0094] The positioning method of the quick positioning welding device with the hollow guide rail as described above comprises the following steps:

[0095] Step one: start the motor 2, convert the continuous rotation of the motor 2 into intermittent motion through the Malta mechanism, drive the top rod 14 to perform intermittent lifting action, and drive the first driving wheel 8 to rotate through the connecting shaft at the same time;

[0096] Step two: when the top rod 14 is in the down position, the engaging wheel 31 engages with the first engaging seat 34, while the brake wheel 32 is separated from the conical brake seat 33, releasing the locking of the transmission shaft 26, so that the transmission shaft 26 of the roller pressing transmission can rotate freely, through the cooperation of the abutting wheel 27 and the bevel gear set, the hollow rail body 9 is conveyed forward by a distance;

[0097] Step three: when the top rod 14 rises, the cylinder 28 acts at this time, so that the engaging wheel 31 is separated from the first engaging seat 34, while the brake wheel 32 is in abutment with the conical brake seat 33, locking the transmission shaft 26, the edge of the cam 6 pushes the top rod 14 to move upward, the top rod 14 drives the first sliding plate 11 to slide upward along the first frame 10 through the jacking frame 12, so that the T-shaped plate 13 lifts the weld of the hollow rail body 9 to the positioning position, so that the weld of the hollow rail body 9 is flat, while the first rack 19 engages with the gear 20, driving the gear 20 to rotate;

[0098] Step four: the rotation of the gear 20 drives the second sliding plate 22 to slide downward along the second frame 21 through the engagement with the second rack 24, so that the welding machine 23 is lowered to the weld for spot welding positioning operation of the weld of the hollow rail body 9;

[0099] Step five: after welding, the top rod 14 is lowered, the cylinder 28 is reset, the fixed block 30 slides reversely along the slide rod 29, so that the engaging wheel 31 re-engages with the first engaging seat 34, while the brake wheel 32 is separated from the conical brake seat 33, the transmission shaft 26 is unlocked, and the device is ready for the next welding positioning cycle.

[0100] The above embodiments are exemplary and not restrictive, and the technical solutions of the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application, which are all included in the present application.

Claims

1. A rapid positioning welding device for a hollow guide rail, comprising a base, a roller transmission mounted on the base, and a hollow guide rail body driven on the roller transmission, characterized in that, Also include: The positioning member installed on the base for pulling positioning of the weld of the hollow rail body, the gear rotatably arranged on the positioning member and the ejector rod installed on the positioning member; The welding member installed on the base for welding the weld of the hollow rail body after pulling positioning, the gear connected with the welding member, for driving the welding member to descend to point weld the weld of the hollow rail body when the positioning member pulls and positions the hollow rail body; The driving member installed on the base, the driving member connected with the ejector rod, and the driving member connected with the roller pressing conveying member through the separation locking member, when the driving member acts, the roller pressing conveying member is driven by the separation locking member to convey the hollow rail body, and the ejector rod is intermittently driven to ascend and descend, and the separation locking member is controlled to perform the separation locking action, so that the hollow rail body is intermittently conveyed and the weld is positioned; The driving member includes a motor installed on the base, a Malta mechanism installed on the output shaft of the motor, and a connecting shaft fixed on the Malta mechanism; The connecting shaft is rotatably connected with the bearing seat installed on the base, and the first driving wheel is fixed on one end of the connecting shaft. The roller pressing conveying member includes a conveying frame installed on the base and a transmission shaft rotatably arranged on the conveying frame; It also includes an adjusting plate slidingly adjusted on the conveying frame and a resisting wheel rotatably arranged on the adjusting plate, and the resisting wheel is connected with the transmission shaft through the bevel gear set; The separation locking member includes a cylinder installed on the conveying frame, a sliding rod fixed on the conveying frame below the cylinder, a fixed block fixed on the top of the piston rod of the cylinder and slidingly connected with the sliding rod, and a clamping wheel and a brake wheel fixed on both ends of the fixed block; It also includes a conical brake seat matched with the brake wheel and fixed on one end of the transmission shaft, a first clamping seat fixed on the conical brake seat, and a separation mechanism connected with the first clamping seat, and the brake wheel is adapted to abut against the conical brake seat.

2. The apparatus according to claim 1, wherein The Malta mechanism includes a driving disc fixed on the output shaft of the motor, a fixed disc fixed on the driving disc, a groove wheel connected with the driving disc, and a cam fixed on the groove wheel; The fixed disc is fixedly connected with the other end of the connecting shaft, the cam is rotatably connected with the fixed frame installed on the base, the edge of the cam abuts against the end of the ejector rod, and the lifting action of the ejector rod is realized by the rotation of the cam.

3. The apparatus according to claim 1, wherein The positioning member includes a first frame installed on the base, a first sliding plate slidingly arranged on the first frame, a jacking frame connected with the first sliding plate, and a T-shaped plate fixed on the first sliding plate; It also includes a first rack fixed on the first sliding plate and meshing with the gear rotatably connected with the top of the first frame.

4. The apparatus according to claim 3, wherein One end of the ejector rod is fixed on the bottom of the jacking frame, and the ejector rod is slidingly inserted into the bottom of the first frame; The first limiting disc is fixed on the ejector rod, the first limiting disc abuts against the mounting frame installed on the base, the first spring is sleeved on the ejector rod below the mounting frame, one end of the first spring abuts against the mounting frame, and the other end abuts against the second limiting disc fixed on the ejector rod.

5. The apparatus according to claim 1, wherein The welding member includes a second frame installed on the base, a second sliding plate slidingly arranged on the second frame, and a welding machine installed on the second sliding plate; It also includes a second rack fixed on one side of the second sliding plate and meshing with the gear.

6. The apparatus according to claim 1, wherein The separating mechanism comprises a second clamping seat engaged with the first clamping seat, a pushing seat fixed on the second clamping seat, and a driving shaft fixedly connected with the pushing seat, and the pushing seat is rotationally connected with the clamping wheel; Further comprising a second spring sleeved on the driving shaft, a second driving wheel in sliding connection with the driving shaft and in transmission connection, and a rotating frame in rotational connection with the driving shaft and mounted on the base, and the second driving wheel is connected with the first driving wheel through a transmission belt.

7. A positioning method using the hollow rail rapid positioning welding device according to any one of claims 1-6, characterized in that, The method comprises the following steps: Step one: start the motor, convert the continuous rotation of the motor into intermittent motion through the Malta mechanism, drive the top rod to perform intermittent lifting action, and drive the first driving wheel to rotate through the connecting shaft at the same time; Step two: when the top rod is in the descending position, the clamping wheel is engaged with the first clamping seat, and the brake wheel is separated from the conical brake seat, thereby releasing the locking of the transmission shaft, so that the transmission shaft of the roller transmission member can rotate freely, and the hollow guide rail body is conveyed a distance forward through the cooperation of the abutting wheel and the bevel gear set; Step three: when the top rod rises, the cylinder acts, so that the clamping wheel is separated from the first clamping seat, and the brake wheel is in abutment with the conical brake seat, thereby locking the transmission shaft, the edge of the cam pushes the top rod to move upward, the top rod drives the first sliding plate to slide upward along the first frame through the jacking frame, so that the T-shaped plate lifts the weld of the hollow guide rail body to the positioning position, so that the weld of the hollow guide rail body is flat, and the first rack is engaged with the gear, thereby driving the gear to rotate; Step four: the rotation of the gear drives the second sliding plate to slide downward along the second frame through the engagement with the second rack, so that the welding machine is lowered to the weld, and the weld of the hollow guide rail body is positioned and spot-welded; Step five: after welding, the top rod descends, the cylinder resets, the fixed block slides reversely along the slide rod, so that the clamping wheel is engaged with the first clamping seat again, and the brake wheel is separated from the conical brake seat, thereby unlocking the transmission shaft, and the device is ready for the next welding positioning cycle.

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