Automatic welding tool for channel steel roller shaft

Abstract

The utility model relates to channel steel roller axle welding technical field, and disclose automatic welding tool of through type channel steel roller axle, including feed conveying frame and the driven roller frame and driving roller frame assembly of the sleeve of the outside of feed conveying frame, the top of feed conveying frame is located between driven roller frame and driving roller frame assembly and is provided with two groups of lower pressure tightly component, positive lift blocking component and reverse lift blocking component. The automatic welding tool of through type channel steel roller axle, driven roller frame and driving roller frame assembly adopt symmetrical distribution's lower support roller and side support roller structure, ensure that channel steel roller axle is balanced when turning over, positive lift blocking component and reverse lift blocking component form complementary structure, cooperate with guide rail guide structure and realize end surface fast accurate location, and the width direction positioning is completed by blocking pin component and side push assembly cooperation, and then the multidirectional pressure tightly system of lower pressure, upper pressure and rotating pressure tightly component is combined, can improve the stability when welding greatly.

Description

Technical Field

[0001] This utility model relates to the field of channel steel roller shaft welding technology, specifically to a through-type automatic welding fixture for channel steel roller shafts. Background Technology

[0002] Channel steel roller shafts are mechanical components that combine the load-bearing characteristics of channel steel with the transmission function of rollers, and are widely used in industrial scenarios such as conveying and warehousing. Based on channel steel as its load-bearing structure, its U-shaped cross-section disperses pressure, improving overall torsional resistance and load-bearing capacity. Combined with high-precision roller shafts, they achieve smooth transmission. The core of the roller shaft is a metal shaft body, fixed to the channel steel by welding or bolts, with rollers mounted at the shaft ends. Materials such as steel and nylon can be selected to suit different working conditions. It combines the structural stability of channel steel with the low-friction advantages of rollers, enabling it to bear heavy objects and achieve translational movement. Applications include material conveying on production lines and the traveling mechanisms of stacker cranes.

[0003] Traditional channel steel roller shaft welding fixtures often require manual hoisting of the channel steel roller shaft into the welding fixture before welding. The welding operation is then carried out using either a robot single-station welding method or manual welding. Before manual loading, the channel steel roller shaft needs to be spot welded, which is time-consuming and cannot improve production efficiency. Furthermore, existing channel steel roller shaft welding fixtures cannot achieve multi-directional clamping and 180° rotation, cannot be linked with robot single-station welding, cannot improve production efficiency, and cannot guarantee welding accuracy. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an automatic welding fixture for through-type channel steel roller shafts, thereby solving the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic welding fixture for through-type channel steel roller shafts, including a feeding conveyor frame and driven roller frame and active roller frame assemblies mounted on the outside of the feeding conveyor frame. Two sets of lower clamping assemblies, a positive lifting blocking assembly, and a reverse lifting blocking assembly are arranged at the top of the feeding conveyor frame between the driven roller frame and the active roller frame assemblies. A positioner drive module is located on the outside of the active roller frame assembly. Inner support frames are installed at equal intervals on the inner side of the feeding conveyor frame. A side push assembly and a stop pin assembly are fixedly arranged at the top of the inner support frame between the driven roller frame and the active roller frame assemblies. Upper clamping assemblies are provided on the side of the driven roller frame and the active roller frame assemblies facing the feeding conveyor frame. A rotary clamping assembly is also provided on the inner side of the feeding conveyor frame. The feeding conveyor frame is equipped with channel steel roller shafts.

[0006] Preferably, the driven roller frame and the active roller frame assembly have the same structure, the feeding conveyor frame passes through the driven roller frame and the active roller frame assembly, the active roller frame assembly includes a lower support frame, the top of the lower support frame is provided with two sets of symmetrically distributed lower support rollers and side support rollers, and the roller frame body is rotatably mounted in the recess at the top of the lower support frame through the lower support rollers and side support rollers.

[0007] Through the above technical solution, the symmetrically distributed lower support rollers and side support rollers form a two-way limiting support structure, which can accurately guide and support the roller frame body, ensure that the channel steel roller shaft is subjected to balanced force during the flipping process, and avoid deformation or positioning displacement of the channel steel roller shaft due to asymmetrical support.

[0008] Preferably, the positioner drive module includes a motor bracket, which is fixedly installed on the side of the lower support frame. A geared motor is fixedly installed on the side of the motor bracket away from the lower support frame. A drive gear is driven on the output shaft of the geared motor. A driven gear ring is fixedly installed on the side of the roller frame body facing the motor bracket. The drive gear and the driven gear ring are meshed.

[0009] Through the above technical solution, the geared motor transmits power to the roller frame body through the meshing of the driving gear and the driven gear ring, which can ensure that the roller frame body drives the channel steel roller shaft to achieve a 180° rotation.

[0010] Preferably, the lower clamping assembly includes a lower fixing frame, which is fixedly connected to the feeding conveyor frame. A first cylinder is fixedly installed at the top of the lower fixing frame, and a lower pressing head is fixedly installed at the movable end of the first cylinder. Two identical sets of the lower fixing frame, the first cylinder, and the lower pressing head are provided and are diagonally distributed about the axis of the feeding conveyor frame.

[0011] Through the above technical solution, the first cylinder drives the lower pressure head to rise and fall vertically, which can apply a clamping force to the channel steel roller shaft and ensure the stability of the channel steel roller shaft during the welding process.

[0012] Preferably, the positive lifting blocking assembly includes an L-shaped bracket, which is fixedly connected to the feeding conveyor frame. A side fixing plate is fixedly installed at the top of the L-shaped bracket, and a second cylinder is fixedly installed at the top of the side fixing plate. A movable plate is fixedly installed at the movable end of the second cylinder, and a blocking block is fixedly installed at the bottom of the movable plate. A guide rail is provided between the movable plate and the L-shaped bracket.

[0013] Through the above technical solution, the guide rail 1 provides guidance for the lifting and lowering movement of the movable plate 1, avoids deviation during the lifting and lowering process, and ensures the positioning accuracy of the blocking block 1. In the front welding process, the second cylinder drives the movable plate 1 to move the blocking block 1 up quickly, and realizes the end face limit of the channel steel roller shaft in conjunction with the detection switch. With the reverse action of the driven roller frame, the active roller frame assembly and the positioner drive module, the channel steel roller shaft is accurately stopped at the predetermined welding position.

[0014] Preferably, the anti-lifting blocking assembly includes an L-shaped bracket II, which is fixedly connected to the feeding conveyor frame. A side plate is fixedly installed at the top of the L-shaped bracket II, and a third cylinder is fixedly installed at the top of the side plate. A connecting plate is fixedly installed at the movable end of the third cylinder, and a movable plate II is fixedly installed at the end of the connecting plate away from the third cylinder. A guide rail II is symmetrically distributed between the movable plate II and the L-shaped bracket II, and a blocking block II is fixedly installed at the bottom of the movable plate II.

[0015] Through the above technical solution, in the reverse welding process, the third cylinder drives the movable plate two through the connecting plate to drive the blocking block two to descend synchronously. In conjunction with the detection switch, it achieves precise positioning of the end face of the channel steel roller shaft. Its structural design complements the positive lifting blocking component, respectively adapting to the positioning requirements of positive and reverse welding.

[0016] Preferably, the stop pin assembly includes a fifth cylinder, which is fixedly installed at the bottom end of the inner support frame. A stop pin rod is fixedly installed at the movable end of the fifth cylinder, and a guide sleeve is provided at the connection between the stop pin rod and the inner support frame. The side-push assembly includes a side-push bracket, which is fixedly installed on the top of the inner support frame. A fourth cylinder is fixedly installed on the outer side of the side-push bracket, and a side-push head is fixedly installed on the movable end of the fourth cylinder.

[0017] Through the above technical solution, the guide sleeve provides guidance for the lifting and lowering movement of the stop pin rod. The fifth cylinder drives the stop pin rod to extend quickly, while the fourth cylinder drives the side pusher to push the channel steel roller shaft horizontally, so that the side of the channel steel roller shaft accurately fits the stop pin rod, achieving positioning in the width direction.

[0018] Preferably, the upper clamping assembly includes an upper fixed frame, a sixth cylinder is fixedly installed at the top of the upper fixed frame, a clamping head is fixedly installed at the movable end of the sixth cylinder, a guide rod is provided between the clamping head and the upper fixed frame, and a guide sleeve is provided at the connection between the guide rod and the upper fixed frame.

[0019] Through the above technical solution, the sixth cylinder drives the pressing head to apply downward pressure, achieving precise pressing from the top of the channel steel roller shaft. Together with the lower pressing component and the rotating pressing component, it forms a multi-directional, three-dimensional pressing structure, fixing the channel steel roller shaft from multiple directions such as up and down, front and back, which can greatly improve the stability during welding.

[0020] Compared with the prior art, this utility model provides an automatic welding fixture for through-type channel steel roller shafts, which has the following beneficial effects: 1. This through-type automatic welding fixture for channel steel roller shafts uses a symmetrically distributed lower support roller and side support roller structure for the driven roller frame and the active roller frame assembly, forming a two-way limiting support to ensure that the channel steel roller shaft is subjected to balanced force when flipping, effectively avoiding deformation and positioning deviation. The positioner drive module can drive the channel steel roller shaft to complete a 180° rotation by means of the meshing of the geared motor and the gear ring, eliminating the problem of clamping loosening caused by the rotation and shaking. 2. This automatic welding fixture for through-type channel steel roller shafts features a complementary structure of positive and negative lifting blocking components, which, together with the guide rail structure, enable rapid and precise end-face positioning. The stop pin component and the side push component work together to complete the width direction positioning. Combined with the multi-directional clamping system consisting of the lower clamping component, the upper clamping component, and the rotary clamping component, it can significantly improve the stability during welding, increase the efficiency of single-process operation, ensure the stability of welding quality in mass production, and has a high degree of automation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the anti-lifting and blocking component of this utility model. Figure 1 ; Figure 3 This is a three-dimensional structural diagram of the anti-lifting and blocking component of this utility model. Figure 2 ; Figure 4 This is a three-dimensional structural diagram of the lower clamping component of this utility model; Figure 5 This is a three-dimensional structural diagram of the positive lifting and blocking component of this utility model. Figure 1 ; Figure 6 This is a three-dimensional structural diagram of the positive lifting and blocking component of this utility model. Figure 2 ; Figure 7 This is a schematic diagram of the three-dimensional structure of the upper clamping component of this utility model. Figure 1 ; Figure 8 This is a schematic diagram of the three-dimensional structure of the upper clamping component of this utility model. Figure 2 ; Figure 9 This is a schematic diagram of the installation structure of the side-push assembly of this utility model. Figure 1 ; Figure 10 This is a schematic diagram of the installation structure of the side-push assembly of this utility model. Figure 2 ; Figure 11 This is a schematic diagram of the installation structure of the side-push assembly of this utility model. Figure 3 ; Figure 12 This is a schematic diagram of the installation structure of the positioner drive module of this utility model.

[0022] The components include: 1. Feed conveyor frame; 2. Driven roller frame; 3. Driven roller frame assembly; 301. Lower support frame; 302. Lower support roller; 303. Side support roller; 304. Roller frame body; 4. Positioner drive module; 401. Motor bracket; 402. Gear motor; 403. Drive gear; 404. Driven gear ring; 5. Lower clamping assembly; 501. Lower fixed frame; 502. First cylinder; 503. Lower pressure head; 6. Positive lifting blocking assembly; 601. L-shaped bracket one; 602. Side fixed plate; 603. Second cylinder; 604. Guide rail one; 605. Movable plate one; 606. Block one; 7. Reverse Lifting and blocking assembly; 701, L-shaped bracket II; 702, side plate; 703, third cylinder; 704, guide rail II; 705, movable plate II; 706, connecting plate; 707, blocking block II; 8, stop pin assembly; 801, fifth cylinder; 802, guide sleeve; 803, stop pin rod; 9, side push assembly; 901, side push bracket; 902, fourth cylinder; 903, side push head; 10, inner support frame; 11, upper clamping assembly; 1101, upper fixed frame; 1102, sixth cylinder; 1103, guide rod; 1104, guide sleeve; 1105, clamping head; 12, rotating clamping assembly; 13, channel steel roller shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: like Figure 1-12As shown, the automatic welding fixture for through-type channel steel roller shafts provided by this utility model includes a feeding conveyor frame 1 and a driven roller frame 2 and an active roller frame assembly 3 mounted on the outside of the feeding conveyor frame 1. Two sets of lower pressing components 5, a positive lifting blocking component 6, and a reverse lifting blocking component 7 are arranged at the top of the feeding conveyor frame 1 between the driven roller frame 2 and the active roller frame assembly 3. A positioner drive module 4 is located on the outside of the active roller frame assembly 3. An inner support frame 10 is installed at equal intervals on the inner side of the feeding conveyor frame 1. A side push component 9 and a stop pin component 8 are fixedly arranged at the top of the inner support frame 10 between the driven roller frame 2 and the active roller frame assembly 3. An upper pressing component 11 is provided on the side of the driven roller frame 2 and the active roller frame assembly 3 facing the feeding conveyor frame 1. A rotary pressing component 12 is also provided on the inner side of the feeding conveyor frame 1. The feeding conveyor frame 1 is provided with a channel steel roller shaft 13.

[0025] Example 2: like Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0026] Specifically, the driven roller frame 2 and the active roller frame assembly 3 have the same structure. The feeding conveyor frame 1 runs through both the driven roller frame 2 and the active roller frame assembly 3. The active roller frame assembly 3 includes a lower support frame 301. Two sets of symmetrically distributed lower support rollers 302 and side support rollers 303 are provided at the top of the lower support frame 301. The roller frame body 304 is rotatably mounted at the recess at the top of the lower support frame 301 through the lower support rollers 302 and side support rollers 303. The advantage is that the symmetrically distributed lower support rollers 302 and side support rollers 303 form a bidirectional limiting support structure, which can accurately guide and support the roller frame body 304, ensuring that the channel steel roller shaft 13 is subjected to balanced force during the flipping process and avoiding deformation or positioning displacement of the channel steel roller shaft 13 due to asymmetrical support.

[0027] Example 3: like Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0028] Specifically, the positioner drive module 4 includes a motor bracket 401, which is fixedly mounted on the side of the lower support frame 301. A geared motor 402 is fixedly mounted on the side of the motor bracket 401 away from the lower support frame 301. A drive gear 403 is driven onto the output shaft of the geared motor 402. A driven gear ring 404 is fixedly mounted on the side of the roller frame body 304 facing the motor bracket 401. The drive gear 403 and the driven gear ring 404 are meshed. The advantage is that the geared motor 402 transmits power to the roller frame body 304 through the meshing of the drive gear 403 and the driven gear ring 404, which ensures that the roller frame body 304 drives the channel steel roller shaft 13 to achieve a 180° rotation.

[0029] Example 4: like Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0030] Specifically, the lower clamping assembly 5 includes a lower fixed frame 501, which is fixedly connected to the feeding conveyor frame 1. A first cylinder 502 is fixedly installed at the top of the lower fixed frame 501, and a lower pressing head 503 is fixedly installed at the movable end of the first cylinder 502. Two identical sets of the lower fixed frame 501, the first cylinder 502, and the lower pressing head 503 are provided, and they are diagonally distributed about the axis of the feeding conveyor frame 1. The advantage is that the first cylinder 502 drives the lower pressing head 503 to rise and fall vertically, which can apply a clamping force to the channel steel roller shaft 13, ensuring the stability of the channel steel roller shaft 13 during the welding process.

[0031] Example 5: like Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0032] Specifically, the positive lifting blocking assembly 6 includes an L-shaped bracket 601, which is fixedly connected to the feeding conveyor 1. A side fixing plate 602 is fixedly installed at the top of the L-shaped bracket 601, a second cylinder 603 is fixedly installed at the top of the side fixing plate 602, a movable plate 605 is fixedly installed at the movable end of the second cylinder 603, a blocking block 606 is fixedly installed at the bottom of the movable plate 605, and a guide rail 604 is provided between the movable plate 605 and the L-shaped bracket 601. The advantage is that the guide rail 604 provides guidance for the lifting and lowering movement of the movable plate 605, avoiding deviation during the lifting and lowering process and ensuring the positioning accuracy of the blocking block 606. In the front welding process, the second cylinder 603 drives the movable plate 605 to drive the blocking block 606 to rise quickly, and realizes the end face limit of the channel steel roller shaft 13 in conjunction with the detection switch. With the reverse action of the driven roller frame 2, the active roller frame assembly 3 and the positioner drive module 4, the channel steel roller shaft 13 is accurately stopped at the predetermined welding position.

[0033] Example 6: like Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0034] Specifically, the anti-lifting blocking assembly 7 includes an L-shaped bracket 701, which is fixedly connected to the feeding conveyor 1. A side plate 702 is fixedly installed at the top of the L-shaped bracket 701, and a third cylinder 703 is fixedly installed at the top of the side plate 702. A connecting plate 706 is fixedly installed at the movable end of the third cylinder 703, and a movable plate 705 is fixedly installed at the end of the connecting plate 706 away from the third cylinder 703. Symmetrically distributed guide rails 704 are provided between the movable plate 705 and the L-shaped bracket 701, and a blocking block 707 is fixedly installed at the bottom of the movable plate 705. The advantage is that in the reverse welding process, the third cylinder 703 drives the movable plate 705 through the connecting plate 706 to synchronously lower the blocking block 707, achieving precise end-face positioning of the channel steel roller shaft 13 in conjunction with the detection switch. Its structural design complements the positive lifting blocking assembly 6, respectively adapting to the positioning requirements of positive and reverse welding.

[0035] Example 7: like Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0036] Specifically, the stop pin assembly 8 includes a fifth cylinder 801, which is fixedly installed at the bottom end of the inner support frame 10. A stop pin rod 803 is fixedly installed at the movable end of the fifth cylinder 801, and a guide sleeve 802 is provided at the connection between the stop pin rod 803 and the inner support frame 10. The side push assembly 9 includes a side push bracket 901, which is fixedly installed on the top of the inner support frame 10. A fourth cylinder 902 is fixedly installed on the outer side of the side push bracket 901, and a side push head 903 is fixedly installed on the movable end of the fourth cylinder 902.

[0037] The advantage is that the guide sleeve 802 provides guidance for the lifting and lowering movement of the stop pin rod 803, the fifth cylinder 801 drives the stop pin rod 803 to extend quickly, and at the same time the fourth cylinder 902 drives the side push head 903 to push the channel steel roller shaft 13 horizontally, so that the side of the channel steel roller shaft 13 accurately fits the stop pin rod 803, and achieves positioning in the width direction.

[0038] Example 8: like Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0039] Specifically, the upper clamping assembly 11 includes an upper fixed frame 1101, a sixth cylinder 1102 fixedly mounted on the top of the upper fixed frame 1101, a clamping head 1105 fixedly mounted on the movable end of the sixth cylinder 1102, a guide rod 1103 provided between the clamping head 1105 and the upper fixed frame 1101, and a guide sleeve 1104 provided at the connection between the guide rod 1103 and the upper fixed frame 1101. The advantage is that the sixth cylinder 1102 drives the clamping head 1105 to apply downward pressure, achieving precise clamping from the upper part of the channel steel roller shaft 13. Together with the lower clamping assembly 5 and the rotary clamping assembly 12, it forms a multi-directional, three-dimensional clamping structure, fixing the channel steel roller shaft 13 from multiple directions such as top, bottom, front, and back, which can significantly improve the stability during welding.

[0040] Working principle: During use, the first blocking block 606 of the positive lifting blocking assembly 6 descends, and the second blocking block 707 of the reverse lifting blocking assembly 7 rises. The lower pressing assembly 5, the upper pressing assembly 11, and the rotary pressing assembly 12 are all in the released position. The blocking pin rod 803 of the blocking pin assembly 8 retracts, and the side push head 903 of the side push assembly 9 retracts to the initial position. The conveying rollers of the feeding conveyor frame 1, the driven roller frame 2, and the active roller frame assembly 3 start synchronously to wait for material. When front welding is performed, the channel steel roller shaft 13 is fed into the working area by the feeding conveyor frame 1 and passes through the working area. After the detection switch detects that the channel steel roller shaft 13 has completely passed through, The second cylinder 603 of the lifting and lowering blocking assembly 6 drives the blocking block 606 to rise along the guide rail 604. The active roller frame assembly 3 and the positioner drive module 4 rotate in a linked manner to reverse, causing the end face of the channel steel roller shaft 13 to fit against the blocking block 606 to complete the end face positioning. Subsequently, the fifth cylinder 801 of the stop pin assembly 8 drives the stop pin rod 803 to extend along the guide sleeve 802. The fourth cylinder 902 of the side push assembly 9 pushes the side push head 903 to push the channel steel roller shaft 13 to fit against the stop pin rod 803 to achieve width positioning. Immediately afterwards, the first cylinder 502 of the lower pressing assembly 5 and the sixth cylinder 1102 of the upper pressing assembly 11 drive... The moving clamping head 1105 and the rotating clamping assembly 12 move synchronously to form a three-dimensional clamping structure. After the external robot completes the front welding, all components are released and reset. The forward lifting blocking assembly 6 resets, and the conveying structure rotates forward to send the channel steel roller shaft 13 to the next process. When performing reverse welding, after the channel steel roller shaft 13 is sent in, the detection switch triggers the third cylinder 703 of the reverse lifting blocking assembly 7, driving the second blocking block 707 to descend along the second guide rail 704. The end face of the channel steel roller shaft 13 fits against the second blocking block 707 to complete the positioning. The subsequent width positioning and three-dimensional clamping process are the same as the front welding. Then, the positioner drive module 4 reduces... The high-speed motor 402 meshes with the driven gear ring 404 through the active gear 403, driving the roller frame body 304 of the active roller frame assembly 3 and the driven roller frame 2 to smoothly rotate the channel steel roller shaft 13 180°. After the robot completes the reverse welding, the positioner rotates 180° in the opposite direction to reset. All components are released, the anti-lifting and blocking assembly 7 is reset, and the conveying structure sends the double-sided welded channel steel roller shaft 13 to the next process. The whole process does not require manual intervention. Through the coordinated linkage of all components, the automated closed-loop operation of welding the front and back sides of the channel steel roller shaft 13 is realized, ensuring the stability and consistency of welding quality.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic welding fixture for through-type channel steel roller shafts, comprising a feeding conveyor frame (1) and a driven roller frame (2) and a driving roller frame assembly (3) mounted on the outside of the feeding conveyor frame (1), characterized in that: The top of the feeding conveyor (1) is provided with two sets of lower pressing components (5), positive lifting blocking components (6) and reverse lifting blocking components (7) between the driven roller frame (2) and the active roller frame assembly (3). The outer side of the active roller frame assembly (3) is a positioner drive module (4). The inner side of the feeding conveyor (1) is provided with an inner support frame (10) at equal intervals. The driven roller frame (2) and the active roller frame assembly (3) are fixedly provided with a side push component (9) and a stop pin component (8) at the top of the inner support frame (10). The side of the driven roller frame (2) and the active roller frame assembly (3) facing the feeding conveyor (1) is provided with an upper pressing component (11). The inner side of the feeding conveyor (1) is also provided with a rotating pressing component (12). The feeding conveyor (1) is provided with a channel steel roller shaft (13).

2. The automatic welding fixture for through-type channel steel roller shafts according to claim 1, characterized in that: The driven roller frame (2) and the active roller frame assembly (3) have the same structure. The feeding conveyor frame (1) passes through the driven roller frame (2) and the active roller frame assembly (3). The active roller frame assembly (3) includes a lower support frame (301). The top of the lower support frame (301) is provided with two sets of symmetrically distributed lower support rollers (302) and side support rollers (303). The roller frame body (304) is rotatably installed at the recessed part of the top of the lower support frame (301) through the lower support rollers (302) and the side support rollers (303).

3. The automatic welding fixture for through-type channel steel roller shafts according to claim 2, characterized in that: The positioner drive module (4) includes a motor bracket (401), which is fixedly installed on the side of the lower support frame (301). A geared motor (402) is fixedly installed on the side of the motor bracket (401) away from the lower support frame (301). A drive gear (403) is driven on the output shaft of the geared motor (402). A driven gear ring (404) is fixedly installed on the side of the roller frame body (304) facing the motor bracket (401). The drive gear (403) and the driven gear ring (404) are meshed.

4. The automatic welding fixture for through-type channel steel roller shafts according to claim 1, characterized in that: The lower pressing assembly (5) includes a lower fixing frame (501), which is fixedly connected to the feeding conveyor frame (1). A first cylinder (502) is fixedly installed at the top of the lower fixing frame (501), and a lower pressing head (503) is fixedly installed at the movable end of the first cylinder (502). The lower fixing frame (501), the first cylinder (502) and the lower pressing head (503) are provided in two identical sets, and are diagonally distributed about the axis of the feeding conveyor frame (1).

5. The automatic welding fixture for through-type channel steel roller shafts according to claim 1, characterized in that: The positive lifting blocking assembly (6) includes an L-shaped bracket (601), which is fixedly connected to the feeding conveyor (1). A side fixing plate (602) is fixedly installed at the top of the L-shaped bracket (601), and a second cylinder (603) is fixedly installed at the top of the side fixing plate (602). A movable plate (605) is fixedly installed at the movable end of the second cylinder (603), and a blocking block (606) is fixedly installed at the bottom of the movable plate (605). A guide rail (604) is provided between the movable plate (605) and the L-shaped bracket (601).

6. The automatic welding fixture for through-type channel steel roller shafts according to claim 1, characterized in that: The anti-lifting blocking assembly (7) includes an L-shaped bracket (701), which is fixedly connected to the feeding conveyor (1). A side plate (702) is fixedly installed at the top of the L-shaped bracket (701), and a third cylinder (703) is fixedly installed at the top of the side plate (702). A connecting plate (706) is fixedly installed at the movable end of the third cylinder (703). A movable plate (705) is fixedly installed at the end of the connecting plate (706) away from the third cylinder (703). A guide rail (704) is symmetrically distributed between the movable plate (705) and the L-shaped bracket (701). A blocking block (707) is fixedly installed at the bottom of the movable plate (705).

7. The automatic welding fixture for through-type channel steel roller shafts according to claim 1, characterized in that: The stop pin assembly (8) includes a fifth cylinder (801), which is fixedly installed at the bottom end of the inner support frame (10). A stop pin rod (803) is fixedly installed at the movable end of the fifth cylinder (801), and a guide sleeve (802) is provided at the connection between the stop pin rod (803) and the inner support frame (10). The side push assembly (9) includes a side push bracket (901), which is fixedly installed on the top of the inner support frame (10). A fourth cylinder (902) is fixedly installed on the outer side of the side push bracket (901), and a side push head (903) is fixedly installed on the movable end of the fourth cylinder (902).

8. The automatic welding fixture for through-type channel steel roller shafts according to claim 1, characterized in that: The upper clamping assembly (11) includes an upper fixed frame (1101), a sixth cylinder (1102) is fixedly installed at the top of the upper fixed frame (1101), a clamping head (1105) is fixedly installed at the movable end of the sixth cylinder (1102), a guide rod (1103) is provided between the clamping head (1105) and the upper fixed frame (1101), and a guide sleeve (1104) is provided at the connection between the guide rod (1103) and the upper fixed frame (1101).

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