Cylindrical choke plug welding tool

Abstract

The utility model provides a cylindrical choke plug welding tool, which relates to the field of welding and comprises a rotating mechanism, a limiting component, a horizontal pressing piece and a welding gun, the rotating mechanism is located on the left side of the horizontal pressing piece. A space is formed between the rotating mechanism and the horizontal pressing piece; the welding gun is positioned above the space; the rotating mechanism comprises a driving mechanism and a rotating shaft; the driving mechanism drives the rotating shaft to rotate; the limiting assembly comprises a first limiting piece and a second limiting piece. The first limiting piece is fixed on the rotating shaft; the second limiting piece is rotatably fixed on the horizontal pressing piece; the horizontal pressing piece pushes the second limiting piece to move; when the sleeve is arranged in the space, the horizontal pressing piece pushes the sleeve along the axis of the rotating shaft, the left end of the sleeve is attached to the first limiting piece, the right end of the sleeve is attached to the second limiting piece, and the welding gun is located at the joint of the cylinder and the choke plug. According to the utility model, the problems of complex transmission structure, inconvenience in installation and use and high cost in the prior art can be solved, the structure for driving the sleeve to rotate is simplified, and the fault tolerance is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a welding fixture for a cylindrical end cap. Background Technology

[0002] In mechanical production, commonly used sleeves are usually made by welding a cylinder and a ferrule. When welding sleeves, workers usually place the sleeve on a V-shaped iron and rotate it to weld the connection between the cylinder and the ferrule. However, when the sleeve is rotated manually, the ferrule cannot be pressed tightly against the cylinder, which affects the welding effect of the sleeve.

[0003] In response, Chinese patent application number 201610385422.4 discloses an automatic end-loading machine for rotary screen printing and an end-loading process. The machine includes two chuck frames mounted on a frame, with at least one chuck frame slidably mounted. A first drive mechanism is provided on the frame to drive the chuck frame to slide. Automatic chucks are mounted on each of the two chuck frames. A second drive mechanism is provided on the frame to drive the automatic chucks to rotate. A middle support frame located between the automatic chucks and capable of vertical movement is also provided on the frame. When using the above patent, the end of the sleeve is placed on the automatic chuck, and the cylinder is placed on the middle support frame. The first drive mechanism clamps the cylinder with the end of the end on both automatic chucks, and the second drive mechanism rotates the automatic chucks, thus pressing the end onto the cylinder and welding it as the sleeve rotates.

[0004] The second drive mechanism adopts the drive structure described in Chinese patent application number 201410568313.7. Specifically, the second power unit is a second motor, and a clutch is provided between the output shaft of the second motor and the second transmission device. The second transmission device includes a drive shaft rotatably mounted on the frame, which is connected to the output shaft of the second motor via a chain. Drive wheels are provided at both ends of the drive shaft, and a drive wheel is also provided on the chuck holder. The chuck is connected to the drive wheel on the chuck holder via a connecting shaft. The drive wheel on the chuck holder is connected to the drive wheel on the drive shaft via a flexible connecting belt. The chuck holder has through holes for mounting bearings on the connecting shaft. When the second motor rotates, its output shaft drives the drive wheel on the drive shaft to rotate via the chain, which in turn drives the drive wheel on the chuck holder to rotate via the flexible connecting belt, thereby driving the chuck to rotate via the connecting shaft.

[0005] The sleeve in the existing technology, such as Figures 8-9As shown, it includes a cylinder 01 and a plug 02; the top of the cylinder 01 is provided with a connector 03; the cross-section of the connector 03 is annular; the bottom of the connector 03 is fixed to the top of the cylinder 01; the cross-section of the connector 03 gradually increases from the top to the bottom; the bottom cross-section of the connector 03 is the same size as the cross-section of the cylinder 01; the inner diameter of the cross-section of the connector 03 is the same size as the inner diameter of the cross-section of the cylinder 01; the plug 02 includes a first body 021, a second body 022 and a third body 023; the first body 021 is... The first body 021 is cylindrical; the second body 022 is frustum-shaped; the third body 023 is cylindrical; the bottom of the first body 021 is fixed to the top of the second body 022; the bottom of the second body 022 is fixed to the top of the third body 023; the cross-section of the second body 022 gradually decreases from the top to the bottom; the cross-section of the first body 021 is the same size as the top cross-section of the second body 022; the bottom cross-section of the second body 022 is the same size as the cross-section of the third body 023; the third body 023 is fitted inside the connector 03.

[0006] When using the above-mentioned automatic end-capping machine to weld the above-mentioned sleeve, the second drive mechanism adopts a structure in which the motor drives the transmission shaft, and the transmission shaft drives the automatic chuck. The motor, transmission shaft and automatic chuck are connected to each other by chains and transmission wheels. The above transmission structure is complicated, inconvenient to install and use, and costly. Moreover, if the transmission device is damaged, or the chain is disengaged from the transmission wheel, it will affect the use of the automatic end-capping machine. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides a cylindrical blind welding fixture that solves the problems of existing technologies that use a motor-driven transmission shaft to drive an automatic chuck, where the transmission structure is complex, inconvenient to install and use, and costly due to the transmission connection via a chain and transmission wheel. This invention simplifies the structure for driving the sleeve rotation and improves the fault tolerance of the structure.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] This utility model provides a cylindrical end welding fixture, which includes a rotating mechanism, a limiting component, a horizontal clamping component, and a welding torch;

[0010] The rotating mechanism is located to the left of the horizontal clamping member; a space for placing the sleeve is provided between the rotating mechanism and the horizontal clamping member; the welding torch is located above the space;

[0011] The rotating mechanism includes a drive mechanism and a rotating shaft; the rotating shaft is horizontally positioned; the drive mechanism drives the rotating shaft to rotate;

[0012] The limiting assembly includes a first limiting member and a second limiting member; the axis of the first limiting member coincides with the axis of the second limiting member; the first limiting member is fixed on the rotating shaft; the axis of the first limiting member coincides with the axis of the rotating shaft; the second limiting member is rotatably fixed on the horizontal clamping member; the horizontal clamping member pushes the second limiting member to move.

[0013] When the sleeve is placed in the space, the sleeve is horizontally positioned. The limiting component limits the sleeve in the vertical and horizontal directions. The horizontal clamping member pushes the sleeve along the axis of the rotating shaft. The left end of the sleeve is in contact with the first limiting member, and the right end of the sleeve is in contact with the second limiting member. The welding torch is located at the connection between the cylinder and the end cap.

[0014] The cylindrical end-welding fixture provided by this utility model preferably includes a hand-operated quick clamping device as the horizontal clamping component; the second limiting component and the pressure rod of the horizontal clamping component are rotatably fixed.

[0015] The cylindrical blind welding fixture provided by this utility model preferably has the rotating shaft arranged in the left-right direction;

[0016] The first limiting component includes a base plate, a first ring, and a second ring; the base plate is placed vertically; the vertical cross-section of the base plate in the left-right direction is circular; the left side surface of the base plate is fixed to the right end of the rotating shaft; the first ring is vertically arranged; the right side surface of the base plate is fixed to the left side surface of the first ring; the outer side wall of the first ring is flush with the arc-shaped side wall of the base plate; the second ring is vertically arranged; the outer side wall of the second ring is flush with the outer side wall of the first ring; the inner diameter of the second ring is larger than the inner diameter of the first ring.

[0017] The second limiting member includes a housing and a first bearing; the housing includes a third ring and a guide member; the third ring is vertically arranged; the guide member includes a fourth ring; the fourth ring is vertically arranged; the right side of the fourth ring is fixed to the left side of the third ring; the inner sidewall of the third ring is flush with the inner sidewall of the fourth ring; the outer diameter of the third ring is larger than the outer diameter of the fourth ring; the first bearing is disposed inside the third ring; the outer ring of the first bearing is fixed to the inner sidewall of the third ring; the pressure rod of the horizontal clamping member is sleeved inside the inner ring of the first bearing; the inner ring of the first bearing is fixed to the pressure rod of the horizontal clamping member.

[0018] The cylindrical end-welding fixture provided by this utility model preferably includes an inlet portion; the vertical cross-section of the inlet portion in the left-right direction is annular; the right side of the inlet portion is fixed to the left side of the fourth ring; the outer circle of the vertical cross-section of the inlet portion in the left-right direction gradually decreases from right to left; the inner diameter of the vertical cross-section of the inlet portion in the left-right direction is equal to the inner diameter of the fourth ring; and the axis of the inlet portion coincides with the axis of the fourth ring.

[0019] The cylindrical end-welding fixture provided by this utility model preferably includes a second bearing as the second limiting member; the second bearing is located to the right of the first bearing; the second bearing is located inside the third ring; the outer ring of the second bearing is fixed to the inner side wall of the third ring; the pressure rod of the horizontal clamping member is sleeved inside the inner ring of the second bearing; the inner ring of the second bearing is fixed to the pressure rod of the horizontal clamping member.

[0020] The first bearing is a tapered roller bearing; the second bearing is a radial ball bearing.

[0021] The cylindrical end-welding fixture provided by this utility model preferably includes a drive mechanism comprising a speed-regulating motor and a motor speed controller; the speed-regulating motor is electrically connected to the motor speed controller; and the output shaft of the speed-regulating motor is connected to the rotating shaft via a coupling.

[0022] The cylindrical blind welding fixture provided by this utility model preferably further includes a mounting plate; the mounting plate is vertically arranged; the mounting plate is located to the left of the first limiting member; the mounting plate has a through-hole in the left-right direction; a third bearing is arranged in the through-hole; the outer ring of the third bearing is fixed to the side wall of the through-hole; the rotating shaft is sleeved in the inner ring of the third bearing; and the speed regulating motor is fixed to the mounting plate.

[0023] The cylindrical end-welding fixture provided by this utility model preferably further includes a fourth bearing; the fourth bearing is located to the left of the third bearing; the fourth bearing is located inside the through-hole; the outer ring of the fourth bearing is fixed to the side wall of the through-hole; the rotating shaft is sleeved inside the inner ring of the fourth bearing;

[0024] The third bearing is a tapered roller bearing; the fourth bearing is a radial ball bearing.

[0025] The cylindrical end-welding fixture provided by this utility model preferably further includes a base; the base includes a sliding seat, a first movable plate and a second movable plate; the first movable plate is located to the left of the second movable plate; the first movable plate and the second movable plate are horizontally arranged;

[0026] The sliding seat includes two sliding grooves; the two sliding grooves are arranged parallel to each other in the left-right direction; the first moving plate and the second moving plate are detachably fixed to the top of the sliding seat; the mounting plate is fixed to the first moving plate; the horizontal clamping member is fixed to the second moving plate.

[0027] The bottom of the sliding groove has several first openings with equal spacing; the front and rear sides of the first moving plate have second openings respectively; bolts are sleeved in the first openings and the second openings, and nuts are tightened to fix them, thus fixing the first moving plate to the sliding seat;

[0028] The second movable plate has a third opening on its front and rear sides respectively; the bolt is sleeved in the first opening and the third opening, and the nut is tightened to fix it, and the second movable plate is fixed to the sliding seat.

[0029] The cylindrical end welding fixture provided by this utility model preferably includes four first positioning pins and four second positioning pins in the sliding seat; the first positioning pins and the second positioning pins are vertically arranged.

[0030] All the first positioning pins are distributed in pairs within the two sliding grooves; the first positioning pins can be slidably embedded in the sliding grooves; the first positioning pins are higher than the top surface of the sliding grooves; a fourth opening corresponding to the first positioning pin is provided on the first moving plate; the first positioning pin is sleeved in the fourth opening.

[0031] All the second positioning pins are distributed in pairs within the two sliding grooves; the second positioning pins can be slidably embedded within the sliding grooves; the second positioning pins are higher than the top surface of the sliding grooves; a fifth opening corresponding to the second positioning pin is provided on the second moving plate; the second positioning pin is sleeved within the fifth opening.

[0032] The above technical solution has the following advantages or beneficial effects:

[0033] This utility model provides a cylindrical end-welding welding fixture, including a rotating mechanism, a limiting component, a horizontal clamping component, and a welding torch. To facilitate welding of the sleeve, it is necessary to clamp the sleeve to ensure stability during welding. Therefore, the sleeve is positioned between the rotating mechanism and the horizontal clamping component. The first limiting component is fixed to the rotating shaft of the rotating mechanism, and the second limiting component is rotatably fixed to the horizontal clamping component. The horizontal clamping component pushes the second limiting component, which in turn pushes the sleeve to move. Furthermore, the axes of the first and second limiting components coincide, and they are at the same height. When the left end of the sleeve contacts the first limiting component, the right end of the sleeve... The sleeve is held in place by the first and second limiting members, thus stabilizing the sleeve. Furthermore, in order to enable the welding torch to continuously weld the connection between the cylinder and the end cap, the rotating mechanism includes a drive mechanism and a rotating shaft. The drive mechanism drives the rotating shaft to rotate, and the rotating shaft is connected to the first limiting member. Since the sleeve is held between the first and second limiting members, under the action of friction, the sleeve rotates with the first limiting member, and the second limiting member can rotate, so that the first limiting member, the sleeve, and the second limiting member rotate together. At this time, the welding torch is fixed at a position that can contact the connection between the cylinder and the end cap. When the sleeve rotates, the connection can be continuously welded.

[0034] When using existing technology, the structure of a motor-driven transmission shaft driving an automatic chuck involves a complex transmission structure via a chain and transmission wheel, which is inconvenient to install and use, and has high costs. The cylindrical end-welding fixture provided by this invention fixes a first limiting member to the rotating shaft of a rotating mechanism, and allows a horizontal clamping member to push a second limiting member, so that the sleeve can be clamped between the first and second limiting members when horizontally positioned. A driving mechanism drives the rotating shaft to rotate, which in turn drives the first limiting member, the sleeve, and the second limiting member to rotate. This design simplifies the process. The simple structure enables the control shaft to rotate in a clamped state. Furthermore, only the first limiting member needs to be installed on the shaft, and the second limiting member can be rotatably installed on the horizontal clamping member. Compared with the prior art, which requires fixing the drive shaft and several drive wheels and connecting the chain, it is easier to install and operate, and the cost is lower. Furthermore, the cylindrical blind welding fixture provided by this utility model drives the first limiting member, sleeve and second limiting member to rotate only through the drive mechanism, and the rotational force is transmitted only through the shaft. Compared with the chain drive in the prior art, due to its simple structure, its working stability and fault tolerance are higher. Attached Figure Description

[0035] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0036] Figure 1 This is a three-dimensional structural diagram of the cylindrical blind welding fixture provided in Embodiment 1 of this utility model.

[0037] Figure 2 yes Figure 1 Enlarged diagram of the circled area.

[0038] Figure 3 This is a schematic diagram of the main cross-sectional structure of the cylindrical blind welding fixture provided in Embodiment 1 of this utility model.

[0039] Figure 4 yes Figure 3 Enlarged diagram of the circled area.

[0040] Figure 5 This is a top view structural diagram of the cylindrical blind welding fixture provided in Embodiment 1 of this utility model.

[0041] Figure 6 This is a schematic diagram of the main structure of the cylindrical end-welding tool provided in Embodiment 1 of this utility model.

[0042] Figure 7 This is a three-dimensional structural diagram of the cylindrical blind welding fixture provided in Embodiment 1 of this utility model when welding the sleeve.

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of the sleeve in the prior art.

[0044] Figure 9 yes Figure 8 A schematic diagram of the cross-sectional structure. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0046] Example 1:

[0047] like Figure 1 and Figure 7 As shown, Embodiment 1 of this utility model provides a cylindrical end welding fixture, which includes a rotating mechanism 1, a limiting component 2, a horizontal clamping component 3, and a welding torch 4.

[0048] The rotating mechanism 1 is located to the left of the horizontal clamping member 3; a space for placing the sleeve is provided between the rotating mechanism 1 and the horizontal clamping member 3; the welding torch 4 is located above the space;

[0049] The rotating mechanism 1 includes a drive mechanism 11 and a rotating shaft 12; the rotating shaft 12 is horizontally arranged; the drive mechanism 11 drives the rotating shaft 12 to rotate;

[0050] The limiting assembly 2 includes a first limiting member 21 and a second limiting member 22; the axis of the first limiting member 21 coincides with the axis of the second limiting member 22; the first limiting member 21 is fixed on the rotating shaft 12; the axis of the first limiting member 21 coincides with the axis of the rotating shaft 12; the second limiting member 22 is rotatably fixed on the horizontal pressing member 3; the horizontal pressing member 3 pushes the second limiting member 22 to move.

[0051] When the sleeve is placed in the space, the sleeve is horizontally positioned. The limiting component 2 limits the sleeve in the vertical and horizontal directions. The horizontal clamping component 3 pushes the sleeve along the axis of the rotating shaft 12. The left end of the sleeve is in contact with the first limiting component 21, and the right end of the sleeve is in contact with the second limiting component 22. The welding torch 4 is located at the connection between the cylinder 01 and the end cap 02.

[0052] When using the cylindrical end-welding fixture provided in Embodiment 1 of this utility model, the spot-welded sleeve is placed in the space between the rotating mechanism 1 and the horizontal clamping member 3, so that the sleeve is horizontally positioned and the axis of the sleeve coincides with the axis of the rotating shaft 12, so that the left end of the sleeve is tightly against the first limiting member 21; the horizontal clamping member 3 pushes the second limiting member 22, and the second limiting member 22 moves to the left along the axis of the rotating shaft 12, pushing the sleeve until the first limiting member 21 is tightly against the left end of the sleeve. At the end, the second limiting member 22 is tightly attached to the right end of the sleeve, and the sleeve is clamped between the first limiting member 21 and the second limiting member 22; the driving mechanism 11 drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the first limiting member 21 to rotate. Since the sleeve is clamped between the first limiting member 21 and the second limiting member 22, and the second limiting member 22 can rotate, the sleeve rotates; the welding torch 4 is fixed at a position that can contact the connection between the cylinder 01 and the end cap 02, and welding is performed on the connection when the sleeve rotates.

[0053] The cylindrical end-welding fixture provided in Embodiment 1 of this utility model includes a rotating mechanism 1, a limiting component 2, a horizontal clamping component 3, and a welding torch 4. To facilitate welding of the sleeve, it is necessary to clamp the sleeve to ensure stability during welding. Therefore, the sleeve is positioned between the rotating mechanism 1 and the horizontal clamping component 3. A first limiting component 21 is fixed to the rotating shaft 12 of the rotating mechanism 1, and a second limiting component 22 is rotatably fixed to the horizontal clamping component 3. The horizontal clamping component 3 pushes the second limiting component 22, which in turn pushes the sleeve to move. Furthermore, the axis of the first limiting component 21 coincides with the axis of the second limiting component 22, and the first limiting component 21 and the second limiting component 22 are at the same height. When the left end of the sleeve contacts the first limiting component 21, the right end of the sleeve contacts the second limiting component 22. The sleeve is held in place by the first limiting member 21 and the second limiting member 22, thus keeping the sleeve stable. Furthermore, in order to enable the welding torch 4 to continuously weld the connection between the cylinder 01 and the end cap 02, the rotating mechanism 1 includes a drive mechanism 11 and a rotating shaft 12. The drive mechanism 11 drives the rotating shaft 12 to rotate. The rotating shaft 12 is connected to the first limiting member 21. Since the sleeve is held between the first limiting member 21 and the second limiting member 22, under the action of friction, the sleeve rotates with the first limiting member 21, and the second limiting member 22 can rotate, so that the first limiting member 21, the sleeve and the second limiting member 22 rotate together. At this time, the welding torch 4 is fixed at a position that can contact the connection between the cylinder 01 and the end cap 02. When the sleeve rotates, the connection can be continuously welded.

[0054] When using existing technology, the structure of a motor-driven transmission shaft driving an automatic chuck involves a complex transmission structure with chains and transmission wheels, which is inconvenient to install and use, and has high costs. The cylindrical end-welding fixture provided in Embodiment 1 of this utility model fixes the first limiting member 21 to the rotating shaft 12 of the rotating mechanism 1, and causes the horizontal clamping member 3 to push the second limiting member 22, so that the sleeve can be clamped between the first limiting member 21 and the second limiting member 22 when horizontally positioned. The rotating shaft 12 is driven to rotate by the driving mechanism 11, and the rotating shaft 12 drives the first limiting member 21, the sleeve, and the second limiting member 22 to rotate. The simple structure enables the control shaft 12 to rotate in a clamped state. Furthermore, only the first limiting member 21 needs to be installed on the shaft 12, and the second limiting member 22 needs to be rotatably installed on the horizontal clamping member 3. Compared with the prior art, which requires fixing the drive shaft and several drive wheels and connecting the chain, it is easier to install and operate, and the cost is lower. Furthermore, the cylindrical end welding fixture provided in Embodiment 1 of this utility model drives the first limiting member 21, the sleeve and the second limiting member 22 to rotate only through the drive mechanism 11, and transmits the rotational force only through the shaft 12. Compared with the chain drive in the prior art, due to its simple structure, its working stability and fault tolerance are higher.

[0055] like Figure 1 As shown, in the cylindrical end-welding fixture provided in Embodiment 1 of this utility model, preferably, the horizontal clamping member 3 is a hand-operated quick clamp; the second limiting member 22 is rotatably fixed to the pressure rod of the horizontal clamping member 3; the hand-operated quick clamp has the same structure as that in Chinese Patent Application No. 201220238961.2; when the handle of the hand-operated quick clamp is pulled upward, the pressure rod moves to the right and retracts the second limiting member 22; when the handle of the hand-operated quick clamp is pressed downward, the pressure rod moves to the left and pushes out the second limiting member 22.

[0056] like Figures 2-4 As shown, in the cylindrical end-welding fixture provided in Embodiment 1 of this utility model, preferably, the rotating shaft 12 is arranged in the left-right direction;

[0057] To achieve the limiting of the sleeve when placed horizontally, specifically, the first limiting member 21 includes a base plate 211, a first ring 212, and a second ring 213; the base plate 211 is placed vertically; the vertical cross-section of the base plate 211 in the left-right direction is circular; the left side of the base plate 211 is fixed to the right end of the rotating shaft 12; the first ring 212 is set vertically; the right side of the base plate 211 is fixed to the left side of the first ring 212; the outer side wall of the first ring 212 is flush with the arc-shaped side wall of the base plate 211; the second ring 213 is set vertically; the outer side wall of the second ring 213 is flush with the outer side wall of the first ring 212; the inner diameter of the second ring 213 is larger than the inner diameter of the first ring 212;

[0058] The second limiting member 22 includes a housing 221 and a first bearing 222; the housing 221 includes a third ring 2211 and a guide member 2212; the third ring 2211 is vertically arranged; the guide member 2212 includes a fourth ring 22121; the fourth ring 22121 is vertically arranged; the right side of the fourth ring 22121 is fixed to the left side of the third ring 2211; the inner circular sidewall of the third ring 2211 is flush with the inner circular sidewall of the fourth ring 22121; the outer diameter of the third ring 2211 is larger than the outer diameter of the fourth ring 22121; the first bearing 222 is disposed inside the third ring 2211; the outer ring of the first bearing 222 is fixed to the inner circular sidewall of the third ring 2211; the pressure rod of the horizontal pressing member 3 is sleeved inside the inner ring of the first bearing 222; the inner ring of the first bearing 222 is fixed to the pressure rod of the horizontal pressing member 3;

[0059] More specifically, when using the first limiting member 21 and the second limiting member 22, the end cap 02 side faces the first limiting member 21, and the cylinder 01 side faces the second limiting member 22; when the first limiting member 21 and the second limiting member 22 clamp the sleeve, the first main body 021 is fitted inside the second ring 213, the arc-shaped sidewall of the first main body 021 is in contact with the inner circular sidewall of the second ring 213, and the top surface of the first main body 021 is in contact with the right side surface of the first ring 212, thereby limiting the end cap 02 side of the sleeve; the guide part 2 of the second limiting member 22 212 is fitted inside the cylinder 01. The outer circular sidewall of the guide member 2212 is in contact with the inner sidewall of the cylinder 01, and the left sidewall of the third ring 2211 is in contact with the bottom of the cylinder 01, thereby limiting one side of the sleeve in the cylinder 01. Furthermore, when the sleeve is clamped by the first limiting member 21 and the second limiting member 22, the second ring 213 prevents the end cap 02 from displacing in the vertical and horizontal directions, and the guide member 2212 prevents the cylinder 01 from displacing in the vertical and horizontal directions, so that the sleeve is stably fixed between the first limiting member 21 and the second limiting member 22.

[0060] like Figures 3-4 As shown, the cylindrical blind welding fixture provided in Embodiment 1 of this utility model preferably includes an introduction portion 2212 to facilitate the insertion of the second limiting member 22 into the cylinder 01. The vertical cross-section of the introduction portion 22122 in the left-right direction is annular. The inner diameter of the vertical cross-section of the introduction portion 22122 in the left-right direction is equal to the inner diameter of the fourth ring 22121. The axis of the introduction portion 22122 coincides with the axis of the fourth ring 22121. The right side of the introduction portion 22122 is fixed to the left side of the fourth ring 22121. The outer circle of the vertical cross-section of the introduction portion 22122 in the left-right direction gradually decreases from right to left. When the second limiting member 22 approaches the sleeve from the right side, the introduction portion 22122 contacts the cylinder 01 first, making the vertical cross-sectional area of ​​the introduction portion 22122 smaller than the inner circle area of ​​the cylinder 01, so that the introduction portion 22122 can easily enter the interior of the cylinder 01.

[0061] like Figures 3-4 As shown, in the cylindrical end-welding fixture provided in Embodiment 1 of this utility model, preferably, the second limiting member 22 further includes a second bearing 223; the second bearing 223 is located to the right of the first bearing 222; the second bearing 223 is located inside the third ring 2211; the outer ring of the second bearing 223 is fixed to the inner circular sidewall of the third ring 2211; the pressure rod of the horizontal clamping member 3 is sleeved inside the inner ring of the second bearing 223; the inner ring of the second bearing 223 is fixed to the pressure rod of the horizontal clamping member 3;

[0062] The first bearing 222 is a tapered roller bearing; the second bearing 223 is a radial ball bearing. Using tapered roller bearings and radial ball bearings allows the second limiting member 22 to rotate relative to the pressure rod of the horizontal pressing member 3, reducing the friction between the second limiting member 22 and the pressure rod of the horizontal pressing member 3, and enabling it to withstand radial and axial forces.

[0063] like Figure 1 As shown in Embodiment 1 of this utility model, the cylindrical blind welding fixture is preferably designed to prevent uneven weld size when the rotation speed of the sleeve is uneven. Therefore, the drive mechanism 11 includes a speed-regulating motor 111 and a motor speed controller 112. The speed-regulating motor 111 is electrically connected to the motor speed controller 112. The output shaft of the speed-regulating motor 111 is connected to the rotating shaft 12 via a coupling. By using the speed-regulating motor 111, the rotating shaft 12 can be controlled to maintain a uniform rotation speed, making the sleeve weld more aesthetically pleasing. The motor speed controller 112 can adjust the output shaft speed of the speed-regulating motor 111 from 0 to 30 revolutions per minute, thereby ensuring that cylinders 01 of different diameters have the same linear velocity and obtaining high-quality welds.

[0064] like Figure 1 and Figure 3 As shown, the cylindrical end-welding fixture provided in Embodiment 1 of this utility model preferably includes a mounting plate 5 for fixing the speed-regulating motor 111 and keeping the rotating shaft 12 stable during rotation; the mounting plate 5 is vertically arranged; the mounting plate 5 is located to the left of the first limiting member 21; the mounting plate 5 has a through-hole 51 in the left-right direction; a third bearing 52 is provided in the through-hole 51; the outer ring of the third bearing 52 is fixed to the side wall of the through-hole 51; the rotating shaft 12 is sleeved in the inner ring of the third bearing 52; the speed-regulating motor 111 is fixed to the mounting plate 5, and the mounting plate 5 can share the axial force from the left, thereby enabling the rotating shaft 12 to rotate stably.

[0065] like Figure 3 As shown, the cylindrical end-welding fixture provided in Embodiment 1 of this utility model preferably further includes a fourth bearing 53; the fourth bearing 53 is located to the left of the third bearing 52; the fourth bearing 53 is located inside the through-hole 51; the outer ring of the fourth bearing 53 is fixed to the side wall of the through-hole 51; and the rotating shaft 12 is sleeved inside the inner ring of the fourth bearing 53.

[0066] The third bearing 52 is a tapered roller bearing; the fourth bearing 53 is a radial ball bearing. Using tapered roller bearings and radial ball bearings can reduce the friction between the shaft 12 and the mounting plate 5, and can withstand radial and axial forces.

[0067] like Figures 5-6As shown, the cylindrical end-welding fixture provided in Embodiment 1 of this utility model preferably further includes a base 6; the base 6 includes a sliding seat 61, a first moving plate 62 and a second moving plate 63; the first moving plate 62 is located to the left of the second moving plate 63; the first moving plate 62 and the second moving plate 63 are horizontally arranged.

[0068] The sliding seat 61 includes two sliding grooves 611; the two sliding grooves 611 are arranged parallel to each other in the left and right directions; the first moving plate 62 and the second moving plate 63 are detachably fixed to the top of the sliding seat 61; the mounting plate 5 is fixed to the first moving plate 62; the horizontal clamping member 3 is fixed to the second moving plate 63.

[0069] The bottom of the sliding groove 611 has several first openings with equal spacing; the front and rear sides of the first moving plate 62 have second openings 621 respectively; the bolts are fitted into the first openings and the second openings 621, and the nuts are tightened to fix them, so that the first moving plate 62 is fixed to the sliding seat 61.

[0070] The second movable plate 63 has a third opening 631 on its front and rear sides respectively; the bolt is sleeved in the first opening and the third opening 631, and the nut is tightened to fix it, so that the second movable plate 63 is fixed to the sliding seat 61.

[0071] By moving the first moving plate 62 and the second moving plate 63, the second opening 621 can be fixed to the first opening at different positions with bolts and nuts, or the third opening 631 can be fixed to the first opening at different positions with bolts and nuts. This changes the distance between the first limiting member 21 and the second limiting member 22, thereby adapting to sleeves of different lengths and enabling welding of sleeves of different lengths.

[0072] like Figures 5-6 As shown, the cylindrical end welding fixture provided in Embodiment 1 of this utility model preferably includes four first positioning pins 612 and four second positioning pins 613 in the sliding seat 61; the first positioning pins 612 and the second positioning pins 613 are arranged vertically.

[0073] All the first positioning pins 612 are distributed in pairs in the two sliding grooves 611; the first positioning pins 612 can be slidably embedded in the sliding grooves 611; the first positioning pins 612 are higher than the top surface of the sliding grooves 611; the first moving plate 62 has a fourth opening 622 corresponding to the first positioning pins 612; the first positioning pins 612 are sleeved in the fourth opening 622.

[0074] All the second positioning pins 613 are distributed in pairs in the two sliding grooves 611; the second positioning pins 613 can be slidably embedded in the sliding grooves 611; the second positioning pins 613 are higher than the top surface of the sliding grooves 611; the second moving plate 63 has a fifth opening 632 corresponding to the second positioning pins 613; the second positioning pins 613 are sleeved in the fifth opening 632.

[0075] When the first moving plate 62 or the second moving plate 63 is moved, the first positioning pin 612 is fitted into the fourth opening 622 and the second positioning pin 613 is fitted into the fifth opening 632. The first positioning pin 612 and the second positioning pin 613 move simultaneously in the sliding groove 611, thereby keeping the first moving plate 62 or the second moving plate 63 in a relative position at the front and rear ends, thus realizing the rapid adjustment of the position of the first moving plate 62 or the second moving plate 63.

[0076] In summary, the cylindrical end-welding fixture provided by this utility model can solve the problems of existing technologies that use a motor to drive a transmission shaft, which in turn drives an automatic chuck. These structures are complex, inconvenient to install and use, and costly due to the transmission connection via a chain and transmission wheel. This invention simplifies the structure for driving the sleeve to rotate and improves the fault tolerance of the structure.

[0077] Those skilled in the art should understand that variations can be implemented by combining existing technology and the above embodiments, and will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0078] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of this utility model, or equivalent embodiments with equivalent changes, do not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A welding fixture for a cylindrical blind end, characterized in that, Includes a rotating mechanism, a limiting assembly, a horizontal clamping component, and a welding torch; The rotating mechanism is located to the left of the horizontal clamping member; a space for placing the sleeve is provided between the rotating mechanism and the horizontal clamping member; the welding torch is located above the space; The rotating mechanism includes a drive mechanism and a rotating shaft; the rotating shaft is horizontally positioned; the drive mechanism drives the rotating shaft to rotate; The limiting assembly includes a first limiting member and a second limiting member; the axis of the first limiting member coincides with the axis of the second limiting member; the first limiting member is fixed on the rotating shaft; the axis of the first limiting member coincides with the axis of the rotating shaft; the second limiting member is rotatably fixed on the horizontal clamping member; the horizontal clamping member pushes the second limiting member to move. When the sleeve is placed in the space, the sleeve is horizontally positioned. The limiting component limits the sleeve in the vertical and horizontal directions. The horizontal clamping member pushes the sleeve along the axis of the rotating shaft. The left end of the sleeve is in contact with the first limiting member, and the right end of the sleeve is in contact with the second limiting member. The welding torch is located at the connection between the cylinder and the end cap.

2. The cylindrical blind welding fixture as described in claim 1, characterized in that, The horizontal clamping component is a hand-operated quick clamp; the second limiting component and the pressure rod of the horizontal clamping component are rotatably fixed.

3. The cylindrical blind welding fixture as described in claim 2, characterized in that, The rotating shaft is arranged in the left-right direction; The first limiting component includes a base plate, a first ring, and a second ring; the base plate is placed vertically; the vertical cross-section of the base plate in the left-right direction is circular; the left side surface of the base plate is fixed to the right end of the rotating shaft; the first ring is vertically arranged; the right side surface of the base plate is fixed to the left side surface of the first ring; the outer side wall of the first ring is flush with the arc-shaped side wall of the base plate; the second ring is vertically arranged; the outer side wall of the second ring is flush with the outer side wall of the first ring; the inner diameter of the second ring is larger than the inner diameter of the first ring. The second limiting member includes a housing and a first bearing; the housing includes a third ring and a guide member; the third ring is vertically arranged; the guide member includes a fourth ring; the fourth ring is vertically arranged; the right side of the fourth ring is fixed to the left side of the third ring; the inner sidewall of the third ring is flush with the inner sidewall of the fourth ring; the outer diameter of the third ring is larger than the outer diameter of the fourth ring; the first bearing is disposed inside the third ring; the outer ring of the first bearing is fixed to the inner sidewall of the third ring; the pressure rod of the horizontal clamping member is sleeved inside the inner ring of the first bearing; the inner ring of the first bearing is fixed to the pressure rod of the horizontal clamping member.

4. The cylindrical blind welding fixture as described in claim 3, characterized in that, The inlet component further includes an inlet portion; the vertical cross-section of the inlet portion in the left-right direction is annular; the right side of the inlet portion is fixed to the left side of the fourth ring; The outer circle of the guide portion in the vertical section in the left-right direction gradually decreases in size from right to left; the inner circle diameter of the guide portion in the vertical section in the left-right direction is equal to the inner circle diameter of the fourth ring; the axis of the guide portion coincides with the axis of the fourth ring.

5. The cylindrical blind welding fixture as described in claim 3, characterized in that, The second limiting member further includes a second bearing; the second bearing is located to the right of the first bearing; the second bearing is located inside the third ring; the outer ring of the second bearing is fixed to the inner sidewall of the third ring; the pressure rod of the horizontal clamping member is sleeved inside the inner ring of the second bearing; the inner ring of the second bearing is fixed to the pressure rod of the horizontal clamping member; The first bearing is a tapered roller bearing; the second bearing is a radial ball bearing.

6. The cylindrical blind welding fixture as described in claim 5, characterized in that, The drive mechanism includes a speed-regulating motor and a motor speed controller; the speed-regulating motor is electrically connected to the motor speed controller; the output shaft of the speed-regulating motor is connected to the rotating shaft via a coupling.

7. The cylindrical blind welding fixture as described in claim 6, characterized in that, It also includes a mounting plate; the mounting plate is vertically arranged; the mounting plate is located to the left of the first limiting member; the mounting plate has a through-hole in the left-right direction; a third bearing is arranged in the through-hole; the outer ring of the third bearing is fixed to the side wall of the through-hole; the rotating shaft is sleeved in the inner ring of the third bearing; the speed regulating motor is fixed to the mounting plate.

8. The cylindrical blind welding fixture as described in claim 7, characterized in that, It also includes a fourth bearing; the fourth bearing is located to the left of the third bearing; the fourth bearing is located inside the through-hole; the outer ring of the fourth bearing is fixed to the side wall of the through-hole; the rotating shaft is sleeved inside the inner ring of the fourth bearing; The third bearing is a tapered roller bearing; the fourth bearing is a radial ball bearing.

9. The cylindrical blind welding fixture as described in claim 7, characterized in that, It also includes a base; the base includes a sliding seat, a first movable plate and a second movable plate; the first movable plate is located to the left of the second movable plate; the first movable plate and the second movable plate are horizontally arranged; The sliding seat includes two sliding grooves; the two sliding grooves are arranged parallel to each other in the left-right direction; the first moving plate and the second moving plate are detachably fixed to the top of the sliding seat; the mounting plate is fixed to the first moving plate; the horizontal clamping member is fixed to the second moving plate. The bottom of the sliding groove has several first openings with equal spacing; the front and rear sides of the first moving plate have second openings respectively; bolts are sleeved in the first openings and the second openings, and nuts are tightened to fix them, thus fixing the first moving plate to the sliding seat; The second movable plate has third openings on its front and rear sides respectively; The bolts are fitted into the first opening and the third opening, and the nuts are tightened to fix them. The second moving plate is fixed to the sliding seat.

10. The cylindrical blind welding fixture as described in claim 9, characterized in that, The sliding seat further includes four first positioning pins and four second positioning pins; the first positioning pins and the second positioning pins are vertically arranged. All the first positioning pins are distributed in pairs within the two sliding grooves; the first positioning pins can be slidably embedded in the sliding grooves; the first positioning pins are higher than the top surface of the sliding grooves; a fourth opening corresponding to the first positioning pin is provided on the first moving plate; the first positioning pin is sleeved in the fourth opening. All the second positioning pins are distributed in pairs within the two sliding grooves; the second positioning pins can be slidably embedded within the sliding grooves; the second positioning pins are higher than the top surface of the sliding grooves; a fifth opening corresponding to the second positioning pin is provided on the second moving plate; the second positioning pin is sleeved within the fifth opening.

Images