Shaft head welding device for roller production

Abstract

The invention relates to the technical field of roller welding, in particular to a shaft head welding device for roller production, which comprises a feeding mechanism, a special-shaped delivery roller, a movable welding table and a receiving mechanism which are sequentially arranged from front to back, and the special-shaped delivery roller is rotatably arranged between the feeding mechanism and the movable welding table through a front bracket; a plurality of roller grooves used for receiving and outputting rollers are formed in the roller surface of the special-shaped delivery roller in the circumferential direction, limiting plates are arranged on the movable welding table in the direction of the two ends in a sliding mode, and a fixing mechanism is arranged at the front end of the movable welding table. The limiting plate is fixed and released through the fixing mechanism, feeding, limiting and discharging of the roller are achieved, and in the process that the roller is transferred to the material receiving mechanism, the limiting plate released by the fixing mechanism guides the roller moving downwards along the movable welding table by means of the gravity of the limiting plate to be transferred to the material receiving mechanism. And simplification of the structure of the shaft head welding device and reduction of energy consumption are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of roller welding, in particular to a shaft head welding device for roller production. Background Art

[0002] Rollers are key components that bear huge pressure and rotate at high speed in industries such as metallurgy and papermaking. Before installation, the rollers need to have shaft heads welded to their ends, and the rollers use the shaft heads to support and rotate the torque. Before welding the shaft heads, the rollers to be welded need to be transferred to the fixture, and the fixture is used to position the rollers. After welding, the rollers need to be removed from the fixture. During the process, the rollers are usually transported manually or by a transporter or a robotic arm. For larger rollers, loading and unloading during welding becomes particularly inconvenient.

[0003] For example, the Chinese invention patent with the announcement number CN118180552B discloses a shaft head welding device for roller production, including a mounting seat, a support plate is arranged on the upper side of the mounting seat, a power wheel distributed in a rectangular array is rotatably connected to the mounting seat, a mirror image sliding frame is slidably connected to the upper side of the mounting seat, a sliding plate is arranged on the sliding frame, a positioning plate is arranged on the sliding plate, a positioning block is arranged on one side of the positioning plate, a welding head is slidably connected to the positioning block, and a rotating shift block that is rotatably connected to the corresponding welding head is rotatably connected to the positioning block. The welding head is pushed by the rotating shift block under pressure, and the rotation of the power wheel is coordinated to perform serpentine track welding on the joint between the shaft head and the bare roller, so that the thermal stress on both sides of the weld is more uniform, and cracking or deformation at the weld is avoided, which affects the production quality of the roller.

[0004] During welding in the above patent, the roller needs to be transferred to the power wheel between the positioning plates on both sides. After welding, the roller needs to be taken out from between the positioning plates on both sides, which makes loading and unloading of the roller very inconvenient. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a shaft head welding device for roller production to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is:

[0007] A shaft head welding device for roller production, comprising a feeding mechanism, a special-shaped delivery roller, a movable welding table and a material receiving mechanism arranged in sequence from front to back, wherein the special-shaped delivery roller is rotatably arranged between the feeding mechanism and the movable welding table through a front bracket;

[0008] A pair of side frames are arranged between the feeding mechanism and the receiving mechanism, the special-shaped delivery roller and the movable welding table are located between the side frames on both sides, and the special-shaped delivery roller and the movable welding table are both rotatably arranged on the side frames;

[0009] The side frame is provided with a delivery driving mechanism for driving the special-shaped delivery roller to rotate intermittently, and a pitch switching mechanism for driving the movable welding table to switch the pitch state;

[0010] The roller surface of the special-shaped delivery roller is provided with a plurality of roller grooves for receiving and outputting the roller along the circumferential direction, and the front end of the movable welding table is provided with a roller claw, and the front end of the roller claw is bent upward;

[0011] The movable welding table is provided with a limit plate slidingly arranged along the two end directions, and a fixing mechanism is arranged at the front end of the movable welding table. When the roller claw receives the roller rolling down the roller groove, the movable welding table is in a posture where the front end is tilted downward, so that the limit plate slides to the front end of the movable welding table and is fixed by the fixing mechanism;

[0012] The pitch switching mechanism drives the front end of the movable welding table to swing upward, so that the roller on the roller claw rolls to the front end of the movable welding table and reaches the welding position that contacts the limit plate;

[0013] The fixing mechanism releases the limit plate after the roller welding is completed, so that the roller and the limit plate move downward, and the roller is received by the material receiving mechanism, so that the roller is separated from the movable welding table and the limit plate.

[0014] Preferably, the feeding mechanism is a feeding plate with the end tilted downward, and the inclination angle of the feeding plate relative to the horizontal plane is not greater than 5°, the distance between the end of the feeding plate and the circumferential side of the special-shaped delivery roller is smaller than the radius of the roller, and the width of the roller groove is adapted to the outer diameter of the roller.

[0015] Preferably, the special-shaped delivery roller is provided with an annular claw groove for the front end of the connecting roller claw to pass through, the annular claw groove is connected with multiple roller grooves, the outer diameter of the special-shaped delivery roller at the annular claw groove is smaller than the distance between the bottom of the roller groove and the axis of the special-shaped delivery roller, and the movable welding table swings upward through the front end, so that the front end of the connecting roller claw in the annular claw groove transfers the rolling roller in the upper roller groove to the connecting roller claw and the movable welding table.

[0016] Preferably, the delivery drive mechanism includes a servo motor, a transmission shaft and a belt-wheel transmission pair, the servo motor is arranged on a side frame, the transmission shaft is rotatably arranged on the side frames on both sides, the special-shaped delivery roller is coaxially fixedly connected with the transmission shaft, and the servo motor and the transmission shaft are connected through a belt-wheel transmission pair.

[0017] Preferably, the pitch switching mechanism includes a crossbeam and a hydraulic rod, the crossbeam is connected to the side frames on both sides, and the crossbeam is located below the movable welding table, the two ends of the hydraulic rod are respectively hinged to the crossbeam and the front end of the movable welding table, and the hydraulic rod is always tilted relative to the movable welding table.

[0018] Preferably, the top of the movable welding table is provided with T-shaped slide grooves along both ends, and at least two T-shaped slide grooves are provided at intervals along both sides of the movable welding table, the cross section of the T-shaped slide groove is an inverted "T" shape, a T-shaped slider adapted to its contour shape is slidably provided in the T-shaped slide groove, and the limit plate is provided on a plurality of T-shaped sliders;

[0019] A guide hole is provided at the bottom of the front end of the movable welding table, and a plurality of pin holes are provided at the bottom of the T-shaped slider. The pin holes are aligned with the corresponding guide holes when the T-shaped slider slides to the front end of the T-shaped slide groove. The fixing mechanism is arranged at the bottom of the movable welding table, and the fixing mechanism fixes and releases the limit plate accordingly by inserting and withdrawing the pin holes.

[0020] Preferably, the fixing mechanism includes a push-pull cylinder, a linkage rod, an inclined rod and a latch, and the inclined rod and the latch are provided in plurality. The latch is plugged into the corresponding guide hole, the lower end of the latch is connected to the linkage rod through the inclined rod, and the two ends of the inclined rod are hinged to the latch and the linkage rod respectively, a hole seat with an opening is provided at the bottom of the movable welding table, the linkage rod is slidably plugged into the hole of the hole seat, and one end of the linkage rod is connected to the push-pull cylinder fixed at the bottom of the movable welding table.

[0021] Preferably, the axial length of the rolling roller is greater than the width of the movable welding table, and the material receiving mechanism is a material receiving plate with a clearance groove at the front end, and the width of the clearance groove is adapted to the width of the movable welding table, so that the end of the movable welding table can swing back and forth between the top and bottom of the material receiving plate. In the process of the limit plate and the rolling roller sliding downward to the end of the movable welding table, the limit plate passes through the clearance groove and moves to the bottom of the material receiving plate, and the two ends of the rolling roller are respectively transferred to the two sides of the annular claw groove of the material receiving plate.

[0022] Preferably, a friction roller and a rotating drive mechanism for driving the friction roller to rotate are rotatably arranged at the bottom of the front end of the movable welding table, and a roller hole is provided at the front end of the movable welding table for the friction roller to be exposed at the top of the movable welding table, and the roller hole is located below the welding position.

[0023] Preferably, an auxiliary roller for the roller to abut against is rotatably arranged on the front side of the limiting plate close to the special-shaped delivery roller.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] Firstly, the present invention realizes the transfer of the roller delivered by the feeding mechanism to the roller groove of the special-shaped delivery roller, the movable welding platform and the feeding mechanism in sequence through the intermittent rotation of the special-shaped delivery roller and the pitch state switching of the movable welding platform, and when the front end of the movable welding platform is tilted upward, the limiting plate fixed by the fixing mechanism limits the roller at the welding position, thereby realizing the loading, limiting and unloading of the roller;

[0026] Secondly, the present invention tilts the front end of the movable welding table upward, which not only limits the roller to the welding position by the limit plate fixed by the fixing mechanism, but also when the fixing structure releases the limit plate, the roller uses its own gravity to move toward the material receiving mechanism in a stable path under the guidance of the limit plate, which is beneficial to the simplification of the shaft head welding device structure and the reduction of energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the shaft head welding device of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the special-shaped delivery roller of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the pitch switching mechanism of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the delivery drive mechanism of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the limiting plate of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the connecting roller claw and the special-shaped delivery roller of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the movable welding table of the present invention;

[0035] Fig. 9 For the present invention Figure 8 Top view of the .

[0036] In the figure:

[0037] 1. Feeding mechanism; 2. Special-shaped delivery roller; 3. Movable welding table; 4. Material receiving mechanism; 5. Side frame; 6. Delivery drive mechanism; 7. Pitch switching mechanism; 8. Roller groove; 9. Roller claw; 10. Limiting plate; 11. Fixing mechanism; 12. Annular claw groove; 13. T-shaped slide groove; 14. T-shaped slide block; 15. Guide hole; 16. Pin hole; 17. Give way groove; 18. Friction roller; 19. Rotation drive mechanism; 20. Roller hole; 21. Auxiliary roller;

[0038] 601, servo motor; 602, transmission shaft; 603, belt-wheel transmission pair;

[0039] 701, crossbeam; 702, hydraulic rod;

[0040] 1101. Push-pull cylinder; 1102. Linking rod; 1103. Inclined rod; 1104. Latch. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-9 The present invention describes the above technical solution in detail through the following embodiments:

[0043] A shaft head welding device for roller production comprises a feeding mechanism 1, a special-shaped delivery roller 2, a movable welding platform 3 and a material receiving mechanism 4 which are arranged in sequence from front to back, and the special-shaped delivery roller 2 is rotatably arranged between the feeding mechanism 1 and the movable welding platform 3 through a front bracket;

[0044] A pair of side frames 5 are arranged between the feeding mechanism 1 and the receiving mechanism 4, and the special-shaped delivery roller 2 and the movable welding table 3 are located between the side frames 5 on both sides, and the special-shaped delivery roller 2 and the movable welding table 3 are both rotatably arranged on the side frames 5;

[0045] The side frame 5 is provided with a delivery driving mechanism 6 for driving the special-shaped delivery roller 2 to rotate intermittently, and a pitch switching mechanism 7 for driving the movable welding table 3 to switch the pitch state;

[0046] The roller surface of the special-shaped delivery roller 2 is provided with a plurality of roller grooves 8 for receiving and outputting the rollers along the circumferential direction, and the front end of the movable welding table 3 is provided with a roller claw 9, and the front end of the roller claw 9 is bent upward;

[0047] The movable welding platform 3 is provided with a limit plate 10 slidingly arranged along the two end directions, and a fixing mechanism 11 is arranged at the front end of the movable welding platform 3. When the roller claw 9 receives the roller rolled down by the roller groove 8, the movable welding platform 3 is in a posture with the front end tilted downward, so that the limit plate 10 slides to the front end of the movable welding platform 3 and is fixed by the fixing mechanism 11;

[0048] The pitch switching mechanism 7 drives the front end of the movable welding platform 3 to swing upward, so that the roller on the roller claw 9 rolls to the front end of the movable welding platform 3 and reaches the welding position that contacts the limit plate 10;

[0049] After the roller welding is completed, the fixing mechanism 11 releases the limit plate 10 to allow the roller and the limit plate 10 to move downward, and receives the roller through the material receiving mechanism 4 to separate the roller from the movable welding table 3 and the limit plate 10.

[0050] Specifically, a plurality of rollers to be welded are arranged on the feeding mechanism 1, and are moved to the roller groove 8 of the profiled delivery roller 2 in the extension direction of the feeding mechanism 1 by pushing and rolling or rolling by self-weight. When the roller at the end of the feeding mechanism 1 is transferred to the roller groove 8 of the profiled delivery roller 2, the remaining rollers stay on the feeding mechanism 1 under the obstruction of the rollers in the roller groove 8. When the delivery driving mechanism 6 drives the profiled delivery roller 2 to rotate, the rollers in the roller groove 8 rotate toward the receiving position of the rear roller claw 9. At this time, the roller at the end of the feeding mechanism 1 loses the obstruction of the roller in the roller groove 8, and is lifted up or pushed forward by the roller surface of the profiled delivery roller 2 as the profiled delivery roller 2 rotates, until the next roller groove 8 reaches the extension direction of the feeding mechanism 1, and the roller at the end of the feeding mechanism 1 enters the roller groove 8. At this time, there are rollers in both the front and rear roller grooves 8, or the roller in the rear roller groove 8 rolls down to the roller claw 9.

[0051] When the pitch switching mechanism 7 drives the front end of the movable welding platform 3 to swing upward to an inclined position, the movable welding platform 3 uses the roller claw 9 bent upward at the front end to make the roller on the roller claw 9 roll down to the front end of the movable welding platform 3 by its own weight, and contact with the limit plate 10 at the front end of the movable welding platform 3 to achieve the positioning of the roller. Subsequently, the two shaft heads are inserted into the two ends of the roller respectively by manual or mechanical means, and the two ends are welded to the roller by manual handheld welding equipment or automatic welding equipment.

[0052] When welding is completed, the fixing mechanism 11 releases the limit plate 10. Since the movable welding platform 3 is in an inclined state with the front end facing upward at this time, the released limit plate 10 and the roller move downward along the movable welding platform 3 under the action of gravity. Since the limit plate 10 is slidably connected to the movable welding platform 3, the roller is prevented from deviating from the rolling direction due to the inconsistent rolling speeds at both ends during the rolling downward process, so that the roller can be smoothly transferred to the feeding mechanism 1. Subsequently, the movable welding platform 3 is reset, and the special-shaped delivery roller 2 rotates again, thereby realizing automatic loading, positioning and unloading of the roller.

[0053] The present invention transfers the roller delivered by the feeding mechanism 1 to the special-shaped delivery roller 2 by driving the special-shaped delivery roller 2 to rotate intermittently through the delivery driving mechanism 6, drives the movable welding table 3 to switch the pitch state through the pitch switching mechanism 7, and slides a limit plate 10 and a fixing mechanism 11 for fixing the limit plate 10 on the movable welding table 3. Through the intermittent rotation of the special-shaped delivery roller 2 and the pitch state switching of the movable welding table 3, the roller delivered by the feeding mechanism 1 is transferred to the roller groove 8 of the special-shaped delivery roller 2, the movable welding table 3 and the feeding mechanism 1 in sequence, and when the front end of the movable welding table 3 tilts upward, the limit plate 10 fixed by the fixing mechanism 11 limits the roller at the welding position, thereby realizing the loading, limiting and unloading of the roller.

[0054] Furthermore, by tilting the front end of the movable welding table 3 upward, not only the roller is limited in the welding position by the limit plate 10 fixed by the fixing mechanism 11, but also when the fixing structure releases the limit plate 10, the roller moves toward the material receiving mechanism 4 in a stable path under the guidance of the limit plate 10 using its own gravity. After the roller is transferred to the material receiving mechanism 4, the front end of the movable welding table 3 tilts downward, so that the limit plate 10 is reset by its own gravity. Not only is the structure streamlined, but also the low-power operation of the shaft head welding device during the process of roller loading, positioning and unloading is achieved, thereby achieving the purpose of energy saving and emission reduction.

[0055] Among them, the feeding mechanism 1 is a feeding plate with a downwardly inclined end, and the inclination angle of the feeding plate relative to the horizontal plane is not greater than 5°, so as to avoid the downward component of the weight of the roller being too large, which will cause the roller to roll too fast, and cause the roller to thrust and impact the special-shaped delivery roller 2 to be large, which is not conducive to extending the service life of the special-shaped delivery roller 2. In addition, the distance between the end of the feeding plate and the circumferential side of the special-shaped delivery roller 2 is smaller than the radius of the roller, and the distance between the two should be small rather than large. The width of the roller groove 8 is adapted to the outer diameter of the roller, and the multiple rollers that are firstly abutted in sequence on the feeding mechanism 1 that is conducive to tilting are transferred to the roller groove 8 of the special-shaped delivery roller 2. The height of the upper end of the feeding plate is higher than the height of the groove wall below the front roller groove 8, so that the roller can be transferred from the feeding plate to the front roller groove 8.

[0056] Preferably, an annular claw groove 12 is provided on the special-shaped delivery roller 2 for the front end of the connecting roller claw 9 to pass through, the annular claw groove 12 is connected to multiple roller grooves 8, the outer diameter of the special-shaped delivery roller 2 at the annular claw groove 12 is smaller than the distance between the bottom of the roller groove 8 and the axis of the special-shaped delivery roller 2, and the movable welding table 3 swings upward through the front end, so that the front end of the connecting roller claw 9 in the annular claw groove 12 transfers the roller in the upper roller groove 8 to the connecting roller claw 9 and the movable welding table 3.

[0057] The structure of the special-shaped delivery roller 2 is optimized by the annular claw groove 12, so that the roller groove 8 equipped with the roller is transferred to the roller claw 9 or moved above the roller claw 9 during the backward rotation, and the roller claw 9 lifts the roller when it swings upward, so that the roller is separated from the support of the special-shaped delivery roller 2. Compared with the method in which the roller falls from the roller groove 8 to the roller claw 9 by rolling down, the transfer process of the roller to the roller claw 9 is smoother, which is beneficial to reducing noise and extending the service life of related components such as the roller claw 9, the movable welding table 3 and the pitch switching mechanism 7.

[0058] It should be noted that when the front end of the roller claw 9 is against the circular side wall of the annular claw groove 12 of the special-shaped delivery roller 2, the front end of the roller claw 9 is located in the annular area between the circular side surface and the circle where the bottom of the roller groove 8 is located, so as to avoid the roller in the roller groove 8 from colliding with the front end of the roller claw 9 when it moves backward with the rotation of the special-shaped delivery roller 2.

[0059] It is additionally noted that, when the profiled delivery roller 2 stops each time, the two roller grooves 8 located at the top, namely, the front roller groove 8 located in the extending direction of the feeding mechanism 1 and the rear roller groove 8 located above the front end of the connecting roller claw 9, are both horizontal or tilted upward outwards to prevent the rollers in the front roller groove 8 from falling when the profiled delivery roller 2 rotates, and to prevent the rollers in the rear roller groove 8 from rolling into the connecting roller claw 9 and causing impact on the connecting roller claw 9 and the movable welding table 3. The number, profile and distribution of the roller grooves 8 only need to meet the above requirements.

[0060] Among them, the delivery drive mechanism 6 includes a servo motor 601, a transmission shaft 602 and a belt-wheel transmission pair 603. The servo motor 601 is arranged on a side frame 5, and the transmission shaft 602 is rotatably arranged on the side frames 5 on both sides. The special-shaped delivery roller 2 is coaxially fixedly connected with the transmission shaft 602, and the servo motor 601 and the transmission shaft 602 are connected through the belt-wheel transmission pair 603.

[0061] Among them, the pitch switching mechanism 7 includes a crossbeam 701 and a hydraulic rod 702. The crossbeam 701 is connected to the side frames 5 on both sides, and the crossbeam 701 is located below the movable welding platform 3. The two ends of the hydraulic rod 702 are respectively hinged to the crossbeam 701 and the front end of the movable welding platform 3, and the hydraulic rod 702 is always tilted relative to the movable welding platform 3. When the hydraulic rod 702 is extended, the front end of the movable welding platform 3 swings upward, otherwise, the front end of the movable welding platform 3 swings downward.

[0062] Among them, a T-shaped slide groove 13 is arranged on the top of the movable welding platform 3 along the two end directions, and at least two T-shaped slide grooves 13 are arranged at intervals along the two side directions of the movable welding platform 3. The cross section of the T-shaped slide groove 13 is an inverted "T" shape. A T-shaped slider 14 adapted to its contour shape is slidably arranged in the T-shaped slide groove 13, and the limit plate 10 is arranged on multiple T-shaped sliders 14;

[0063] A guide hole 15 is provided at the bottom of the front end of the movable welding table 3, and a plurality of pin holes 16 are provided at the bottom of the T-shaped slider 14. The pin holes 16 are aligned with the corresponding guide holes 15 when the T-shaped slider 14 slides to the front end of the T-shaped slide groove 13. The fixing mechanism 11 is arranged at the bottom of the movable welding table 3. The fixing mechanism 11 fixes and releases the limit plate 10 accordingly by inserting and withdrawing the pin holes 16.

[0064] Among them, the fixing mechanism 11 includes a push-pull cylinder 1101, a linkage rod 1102, an inclined rod 1103 and a latch 1104. The inclined rod 1103 and the latch 1104 are both provided in plurality. The latch 1104 is plugged into the corresponding guide hole 15. The lower end of the latch 1104 is connected to the linkage rod 1102 through the inclined rod 1103, and the two ends of the inclined rod 1103 are respectively hinged to the latch 1104 and the linkage rod 1102. A hole seat with an opening is provided at the bottom of the movable welding table 3. The linkage rod 1102 is slidably plugged into the hole of the hole seat. One end of the linkage rod 1102 is connected to the push-pull cylinder 1101 fixed at the bottom of the movable welding table 3. The push-pull cylinder 1101 pushes and pulls the linkage rod 1102, which drives multiple inclined inclined rods 1103 to swing back and forth, so that the inclined rods 1103 push the latch 1104 upward and pull the latch 1104 to reset. When the latch 1104 is pushed up, the latch 1104 is inserted into the pin hole 16 at the bottom of the T-shaped slider 14 to lock the position of the T-shaped slider 14. Conversely, when the latch 1104 is reset downward to disengage from the pin hole 16, the T-shaped slider 14 is released, thereby achieving the fixation and release of the limit plate 10.

[0065] What is further optimized in the above embodiment is that the axial length of the rolling roller is greater than the width of the movable welding table 3, and the material receiving mechanism 4 is a material receiving plate with a clearance groove 17 at the front end, and the width of the clearance groove 17 is adapted to the width of the movable welding table 3, so that the end of the movable welding table 3 can swing back and forth between the upper and lower parts of the material receiving plate. In the process of the limit plate 10 and the rolling roller sliding downward to the end of the movable welding table 3, the limit plate 10 passes through the clearance groove 17 and moves to the lower part of the material receiving plate, and the two ends of the rolling roller are respectively transferred to the two sides of the annular claw groove 12 of the material receiving plate, thereby realizing the automatic transfer of the rolling roller welded to the shaft head to the material receiving mechanism 4.

[0066] Further optimized in the above embodiment is that a friction roller 18 and a rotating drive mechanism 19 for driving the friction roller 18 to rotate are rotatably provided at the bottom of the front end of the movable welding table 3, and a roller hole 20 is provided at the front end of the movable welding table 3 for the friction roller 18 to be exposed at the top of the movable welding table 3, and the roller hole 20 is located below the welding position.

[0067] When the roller reaches the welding position where it contacts the limit plate 10, the friction roller 18 supports the roller, and the rotary drive mechanism 19 drives the friction roller 18 to rotate. The friction roller 18 drives the roller to rotate by means of the friction force between the roller and the roller, so as to facilitate welding of the roller and the shaft head.

[0068] In addition, an auxiliary roller 21 is rotatably arranged on the front side of the limiting plate 10 near the special-shaped delivery roller 2 for the roller to abut against, so as to reduce the friction between the roller and the limiting plate 10 when the roller rotates on the movable welding table 3.

[0069] It should be noted that, in order to ensure that there is sufficient friction between the friction roller 18 and the roller when the friction roller 18 drives the roller to rotate, measures such as anti-skid patterns or anti-skid rubber pads can be provided on the roller surface of the friction roller 18. In addition, when the front end of the movable welding table 3 is tilted upward, that is, when the roller reaches the welding position, the tilt angle of the movable welding table 3 relative to the horizontal plane should not be too large. On the one hand, it is conducive to increasing the pressure of the roller on the friction roller 18, thereby increasing the friction between the two. On the other hand, it is prevented that the roller and the limit plate 10 slide downward too fast, which causes a greater impact on the material receiving mechanism 4 when the roller is transferred to the material receiving mechanism 4.

[0070] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A shaft head welding device for roller production, characterized in that: It comprises a feeding mechanism (1), a special-shaped feeding roller (2), a movable welding table (3) and a material receiving mechanism (4) which are arranged in sequence from front to back, wherein the special-shaped feeding roller (2) is rotatably arranged between the feeding mechanism (1) and the movable welding table (3) via a front bracket; A pair of side frames (5) are arranged between the feeding mechanism (1) and the receiving mechanism (4); the special-shaped delivery roller (2) and the movable welding table (3) are located between the side frames (5) on both sides; and the special-shaped delivery roller (2) and the movable welding table (3) are both rotatably arranged on the side frames (5); The side frame (5) is provided with a delivery driving mechanism (6) for driving the special-shaped delivery roller (2) to rotate intermittently, and a pitch switching mechanism (7) for driving the movable welding table (3) to switch the pitch state; The roller surface of the special-shaped delivery roller (2) is provided with a plurality of roller grooves (8) for receiving and outputting the roller along the circumferential direction, and the front end of the movable welding table (3) is provided with a roller claw (9), and the front end of the roller claw (9) is bent upward; The movable welding platform (3) is provided with a limit plate (10) which is slidably arranged along the two end directions, and a fixing mechanism (11) is arranged at the front end of the movable welding platform (3). When the roller claw (9) receives the rolling roller rolled down the roller groove (8), the movable welding platform (3) is in a posture with the front end tilted downward, so that the limit plate (10) slides to the front end of the movable welding platform (3) and is fixed by the fixing mechanism (11); The pitch switching mechanism (7) drives the front end of the movable welding platform (3) to swing upward, so that the roller on the roller claw (9) rolls to the front end of the movable welding platform (3) and reaches a welding position that contacts the limit plate (10); After the roller welding is completed, the fixing mechanism (11) releases the limit plate (10) so that the roller and the limit plate (10) move downward, and receives the roller through the material receiving mechanism (4) so ​​that the roller is separated from the movable welding table (3) and the limit plate (10).

2. The shaft head welding device for roller production according to claim 1 is characterized in that: The feeding mechanism (1) is a feeding plate with its end tilted downward, and the inclination angle of the feeding plate relative to the horizontal plane is not greater than 5°. The distance between the end of the feeding plate and the circumferential side of the special-shaped delivery roller (2) is less than the radius of the roller, and the width of the roller groove (8) is adapted to the outer diameter of the roller.

3. The shaft head welding device for roller production according to claim 1, characterized in that: The profiled delivery roller (2) is provided with an annular claw groove (12) for the front end of the connecting roller claw (9) to pass through, the annular claw groove (12) is connected to a plurality of roller grooves (8), the outer diameter of the profiled delivery roller (2) at the annular claw groove (12) is smaller than the distance between the bottom of the roller groove (8) and the axis of the profiled delivery roller (2), and the movable welding platform (3) swings upward through the front end, so that the front end of the connecting roller claw (9) in the annular claw groove (12) transfers the roller in the upper roller groove (8) to the connecting roller claw (9) and the movable welding platform (3).

4. The shaft head welding device for roller production according to claim 1, characterized in that: The delivery drive mechanism (6) comprises a servo motor (601), a transmission shaft (602) and a belt-wheel transmission pair (603); the servo motor (601) is arranged on a side frame (5) at one side; the transmission shaft (602) is rotatably arranged on the side frames (5) at both sides; the special-shaped delivery roller (2) is coaxially fixedly connected to the transmission shaft (602); and the servo motor (601) and the transmission shaft (602) are transmission-connected via the belt-wheel transmission pair (603).

5. The shaft head welding device for roller production according to claim 1, characterized in that: The pitch switching mechanism (7) comprises a crossbeam (701) and a hydraulic rod (702); the crossbeam (701) is connected to the side frames (5) on both sides, and the crossbeam (701) is located below the movable welding platform (3); the two ends of the hydraulic rod (702) are respectively hinged to the crossbeam (701) and the front end of the movable welding platform (3), and the hydraulic rod (702) is always arranged to be inclined relative to the movable welding platform (3).

6. The shaft head welding device for roller production according to claim 1, characterized in that: The top of the movable welding platform (3) is provided with a T-shaped slide groove (13) along both ends, and at least two T-shaped slide grooves (13) are arranged at intervals along both sides of the movable welding platform (3), the cross section of the T-shaped slide groove (13) is in an inverted "T" shape, and a T-shaped slider (14) adapted to the contour shape of the T-shaped slide groove (13) is slidably arranged in the T-shaped slide groove (13), and the limiting plate (10) is arranged on a plurality of T-shaped sliders (14); A guide hole (15) is provided at the bottom of the front end of the movable welding platform (3), and a plurality of pin holes (16) are provided at the bottom of the T-shaped slider (14). The pin holes (16) are aligned with the corresponding guide holes (15) when the T-shaped slider (14) slides to the front end of the T-shaped slide groove (13). The fixing mechanism (11) is arranged at the bottom of the movable welding platform (3), and the fixing mechanism (11) fixes and releases the limit plate (10) accordingly by inserting and withdrawing the pin holes (16).

7. The shaft head welding device for roller production according to claim 6, characterized in that: The fixing mechanism (11) comprises a push-pull cylinder (1101), a linkage rod (1102), an inclined rod (1103) and a latch (1104). The inclined rod (1103) and the latch (1104) are both provided in plurality. The latch (1104) is plugged into a corresponding guide hole (15). The lower end of the latch (1104) is connected to the linkage rod (1102) through the inclined rod (1103), and the two ends of the inclined rod (1103) are respectively hinged to the latch (1104) and the linkage rod (1102). A hole seat with an opening is provided at the bottom of the movable welding platform (3). The linkage rod (1102) is slidably plugged into the hole of the hole seat. One end of the linkage rod (1102) is connected to the push-pull cylinder (1101) fixed at the bottom of the movable welding platform (3).

8. The shaft head welding device for roller production according to claim 1, characterized in that: The axial length of the rolling roller is greater than the width of the movable welding table (3); the material receiving mechanism (4) is a material receiving plate with a clearance groove (17) at the front end; the width of the clearance groove (17) is adapted to the width of the movable welding table (3) so that the end of the movable welding table (3) can swing back and forth between the upper and lower parts of the material receiving plate; when the limit plate (10) and the rolling roller slide downward to the end of the movable welding table (3), the limit plate (10) passes through the clearance groove (17) and moves to the lower part of the material receiving plate, and the two ends of the rolling roller are respectively transferred to the two sides of the annular claw groove (12) of the material receiving plate.

9. The shaft head welding device for roller production according to claim 1, characterized in that: A friction roller (18) and a rotary drive mechanism (19) for driving the friction roller (18) to rotate are rotatably arranged at the bottom of the front end of the movable welding table (3); a roller hole (20) is provided at the front end of the movable welding table (3) for allowing the friction roller (18) to be exposed at the top of the movable welding table (3); and the roller hole (20) is located below the welding position.

10. The shaft head welding device for roller production according to claim 1, characterized in that: An auxiliary roller (21) is rotatably arranged on the front side of the limiting plate (10) close to the special-shaped delivery roller (2) for the roller to abut against.

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