Novel clamp pressing device of strip steel narrow lap seam welder

Abstract

The present application relates to the technical field of device for fixing workpiece, and discloses a novel clamp pressing device of strip steel narrow lap joint seam welding machine, which comprises a control frame slidably connected to the welding machine, gear slot rollers rotatably connected to the control frame, a gear slot belt wound between the gear slot rollers, a first mounting frame slidably connected to the control frame, the first mounting frame being arranged at a lateral position of the welding roller running direction and being fixedly connected with the gear slot belt, and a pressing roller rotatably connected to the first mounting frame. The pressing roller is linked with the welding roller, and can press the strip steel in real time during the welding process, effectively suppresses the strip steel slip, and improves the welding precision and the welding seam quality. The flexible cooperation between the welding roller and the pressing roller can reduce the energy consumption and avoid the stress concentration problem caused by the rigid contact. In addition, the welding roller and the pressing roller can provide safety redundancy as a buffer stage under abnormal working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of device for fixing workpiece, and discloses a novel clamp pressing device of a strip steel narrow lap joint seam welder. BACKGROUND

[0002] In the continuous production process of steel pipes, strip steel welding is a key link to ensure the continuous feeding of the strip steel. By welding the end portions of the front and rear sections of the strip steel, a continuous and stable raw material conveying can be formed, thereby providing a basis for subsequent forming, rolling and other processes. In order to reduce the waste section of welding and improve the material utilization, the existing technology usually adopts a seam welder to realize narrow lap welding. During welding, the welding roller is controlled by a driving device to move at a uniform speed along the lap joint position. The seam welder can form a stable weld in a narrow lap joint area (usually several millimeters to tens of millimeters) through local concentrated heating and pressure action, and has the advantages of small welding width, high efficiency and simple equipment structure, and is therefore widely used in strip steel continuous production lines.

[0003] However, in the actual welding process, the roller needs to apply vertical pressure to the strip steel to ensure close contact of the lap joint interface, but the dynamic contact friction force between the roller and the surface of the strip steel easily causes a slight displacement of the strip steel in the transverse or longitudinal direction. Especially in the narrow lap joint seam welding scenario, the thickness of the strip steel is thin and the lap joint area is narrow, which further amplifies the problem of slight displacement. Once the lap joint position of the strip steel deviates, the welding heat source of the seam welder cannot completely cover the lap joint interface between the strip steels, which may result in an unfused area at the edge of the weld, reducing the welding quality of the strip steel, or even cause the two sections of the strip steel to be misaligned, thereby causing the processing data deviation in the subsequent forming and rolling processes, and seriously affecting the production efficiency and product quality of the strip steel. SUMMARY

[0004] The present application aims at the defects of the prior art, and provides a novel clamp pressing device of a strip steel narrow lap joint seam welder which can effectively suppress the displacement of the strip steel.

[0005] The novel clamp pressing device of the strip steel narrow lap joint seam welder comprises a control frame slidably connected to a welder, the welder is composed of a support bottom plate, a support side plate, a controller, a welding roller, an extension seat and a pad strip, the control frame is slidably connected to the controller, and the controller is provided with a driving member; a gear slot roller rotatably connected to the control frame, the gear slot roller is provided with an elastic member; a gear slot belt wound between the gear slot rollers, the gear slot rollers cooperate with the gear slot belt; a first mounting frame slidably connected to the control frame, the first mounting frame is arranged at a lateral position in the running direction of the welding roller, in contact with the extension seat, and the first mounting frame is fixedly connected with the gear slot belt; and a pressing roller rotatably connected to the first mounting frame.

[0006] Optionally, the device further comprises a limiting frame fixedly connected to the control frame, the limiting frame being arranged on both sides of the moving track of the welding roller; and a limiting roller rotatably connected to the bottom of the limiting frame.

[0007] Optionally, the device further comprises a first mounting block arranged on the support side plate, at least two first mounting blocks being arranged on each support side plate; and a moving roller rotatably connected to each first mounting block, the moving roller forming a contact pair with the strip steel, and the moving roller being provided with a groove for increasing friction.

[0008] Optionally, the device further comprises a second mounting block arranged on the support side plate, at least two second mounting blocks being arranged on each support side plate, the first mounting blocks and the second mounting blocks being symmetrically arranged on the left and right sides of the support side plate, and each first mounting block being positionally matched with each second mounting block; a first gear rotatably connected to each second mounting block, the first gear being provided with an elastic member inside; a transmission shaft fixedly connected between the moving roller and the first gear, the transmission shaft being arranged between the positionally matched first mounting block and the second mounting block; a control bar slidingly connected to the second mounting block; the control bar being provided with a number of toothed sections corresponding to the first gear in terms of position, each toothed section forming a meshing transmission pair with each first gear; an auxiliary roller rotatably connected to the end of the control bar; a first control block fixedly connected to the control frame, the first control block being provided with a slope module, and the first control block forming a contact pair with the auxiliary roller.

[0009] Optionally, the first control block can be disassembled to replace the slope module with a different inclination.

[0010] Optionally, the first mounting block, the second mounting block, and the transmission shaft are all slidingly connected to the support side plate; the device further comprises a first return spring fixedly connected between the first mounting block and the support side plate; an extrusion block slidingly connected to the support side plate, the number and positions of the extrusion blocks corresponding to the first mounting blocks, and each extrusion block being connected to each first mounting block; a second mounting frame fixedly connected to the support side plate; an extrusion plate slidingly connected to the second mounting frame, the extrusion plate being provided with a slope group, the number and positions of the slope groups corresponding to the extrusion blocks, and the extrusion plate forming a contact pair with the extrusion blocks through the slope group; a second return spring fixedly connected between the second mounting frame and the extrusion plate; and a second control block fixedly connected to the end of the extrusion plate, the second control block being provided with a slope matched with the control frame to form a contact pair, and the position at which the second control block contacts the control frame being higher than the position at which the first control block contacts the auxiliary roller.

[0011] Optionally, the device further comprises an adjustment spring fixedly connected between the extrusion block and the first mounting block, the elastic coefficient of the adjustment spring being greater than that of the first return spring.

[0012] Optionally, the device further comprises a third mounting frame fixedly connected to the bottom of the support bottom plate; a limiting frame slidingly connected to the third mounting frame, the limiting part of the limiting frame passing through the support bottom plate and being located above the support bottom plate; and a third return spring fixedly connected between the limiting frame and the support bottom plate.

[0013] Optionally, the device further comprises a push frame slidingly connected to the third mounting frame; a fourth return spring fixedly connected between the push frame and the third mounting frame; a rotating frame rotatably connected to the push frame, the rotating frame being rotatably connected to the limiting frame; and a third control block fixedly connected to the bottom of the control frame, the third control block forming a contact pair with the rotating frame.

[0014] Optionally, the device further comprises a cleaning brush rotatably connected to the bottom of the first mounting frame; a rotating rod rotatably connected to the first mounting frame, the rotating rod being fixedly connected to the cleaning brush; a transmission rod rotatably connected to the first mounting frame; bevel gears fixedly connected to the transmission rod and the rotating rod respectively, the two bevel gears forming a meshing transmission pair; a second gear fixedly connected to the end of the transmission rod; and a rack fixedly connected to the inner side wall of the control frame, the rack forming a meshing transmission pair with the second gear.

[0015] The present application has the advantages that: the present application adopts the pressing roller linked with the welding roller to press the strip steel in real time during the welding process, effectively suppresses the strip steel slip, and realizes the improvement of the welding precision and the welding quality; the linkage design of the separation of the welding roller and the pressing roller forms the flexible cooperation of the welding roller and the pressing roller, which can reduce the energy consumption and avoid the stress concentration problem caused by the rigid contact, thereby prolonging the service life of the components; in addition, the welding roller and the pressing roller can provide safety redundancy as a buffer stage under abnormal working conditions, thereby reducing the welding accident risk; the present application uses the mobile roller to quantitatively convey the strip steel to automatically form the lap joint section, improves the lap joint setting precision, simplifies the strip steel feeding process, and improves the operation efficiency; and the lap joint width is adjustable to adapt to different process requirements; the present application uses the limiting frame to assist the strip steel centering, sets the limiting frame to automatically retract and expand, and sets the position of the mobile roller to realize the automatic adjustment, thereby providing convenience for the strip steel feeding and facilitating the operation process of the present application; and the present application uses the cleaning brush to ensure the pre-welding cleanliness and reduce the welding defects. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the present application and the welding machine.

[0017] Figure 2 It is the overall structure schematic diagram of the welding machine.

[0018] Figure 3 It is the connecting structure sectional view of the pressing mechanism and the welding roller in the present application.

[0019] Figure 4Partial structure sectional view of pressing mechanism in the application.

[0020] Figure 5 Connection structure schematic diagram of material moving mechanism and control frame in the application.

[0021] Figure 6 Connection structure separated diagram of material moving mechanism and installation side plate in the application.

[0022] Figure 7 Connection structure side view of adjusting mechanism in the application.

[0023] Figure 8 Connection structure sectional view of adjusting mechanism in the application.

[0024] Figure 9 Connection structure schematic diagram of limiting mechanism in the application.

[0025] Figure 10 Connection structure sectional view of limiting mechanism in the application.

[0026] Figure 11 Connection structure schematic diagram of cleaning mechanism in the application.

[0027] Figure 12 Connection structure sectional view of cleaning mechanism in the application.

[0028] Markings in the drawings: 101: support bottom plate, 102: support side plate, 103: controller, 104: welding roller, 105: telescopic seat, 106: pad strip, 201: control frame, 202: air cylinder, 203: toothed groove roller, 204: toothed groove belt, 205: guide groove, 206: first installation frame, 207: pressing roller, 208: limiting frame, 209: limiting roller, 301: first installation block, 302: moving roller, 303: second installation block, 304: first gear, 305: transmission shaft, 306: control strip, 307: convex tooth section, 308: auxiliary roller, 309: first control block, 401: first reset spring, 402: extrusion block, 403: adjusting spring, 404: second installation frame, 405: extrusion plate, 406: second reset spring, 407: second control block, 501: third installation frame, 502: limiting frame, 503: third reset spring, 504: rotating frame, 505: third control block, 506: pushing frame, 507: fourth reset spring, 601: cleaning brush, 602: rotating rod, 603: transmission rod, 604: bevel gear, 605: second gear, 606: rack. DETAILED DESCRIPTION

[0029] Embodiments of the application are described below with reference to the accompanying drawings.

[0030] Embodiment: New clamp pressing device of strip steel narrow lap joint seam welder Figures 1-2 As shown in the combination of Figures 1-2 , the welder comprises: a support bottom plate 101; support side plates 102 fixedly installed on the left and right sides of the support bottom plate 101, two support side plates 102 distributed in front and back are arranged on each side of the support bottom plate 101, that is, four support side plates 102 are arranged in total; a controller 103 fixedly installed on the support side plates 102, the controller 103 is located between each two support side plates 102 in front and back positions; a telescopic seat 105 slidingly installed below the controller 103, the control end of the controller 103 is fixed to the upper part of the telescopic seat 105, for controlling the telescopic seat 105 to displace in the left-right direction; a welding roller 104 fixedly installed on the lower part of the telescopic seat 105, the telescopic seat 105 controls the welding roller 104 to displace in the up-down direction; a pad strip 106 fixedly installed on the support bottom plate 101, the moving track of the welding roller 104 coincides with the pad strip 106, the welding roller 104 realizes continuous welding processing of the strip steel by heating the wheel part thereof, controlling the rotation of the wheel part thereof, and cooperating with the pad strip 106.

[0031] When using the welder, first lay two pieces of strip steel to be welded on the support bottom plate 101, so that the lap joint section is accurately positioned on the pad strip 106, then drive the telescopic seat 105 to extend, drive the welding roller 104 to move downward to press the strip steel and form dynamic cooperation with the pad strip 106; control the welding roller 104 and the controller 103 to run, the controller 103 controls the welding roller 104 to move to the right, at the same time the welding roller 104 controls the heating and rotation of the wheel part thereof, realizes continuous welding processing of the strip steel; in the above process, the rotating speed of the wheel part of the welding roller 104 and the moving speed of the welding roller 104 itself are coordinated, so as to reduce the frictional resistance between the welding roller 104 and the strip steel, and reduce the amount of slip generated by the welding roller 104 to the strip steel.

[0032] As shown in the combination of Figure 1 , Figure 3 and Figure 4 , the new clamp pressing device of the strip steel narrow lap joint seam welder comprises: a pressing mechanism arranged and installed on the welder for assisting the welder in welding the strip steel, the pressing mechanism reduces the amount of slip generated by the welder to the strip steel by stably pressing the position of the strip steel, and improves the welding precision of the strip steel.

[0033] The pressing mechanism comprises a control frame 201 arranged on the welding machine, specifically, the control frame 201 is slidingly arranged below the controller 103 and is displaced in the up-down direction; the controller 103 is provided with a driving member connected with the control frame 201 and providing moving power for the control frame 201, specifically, a gas cylinder 202 is fixedly arranged on the top of the controller 103, and the control end of the gas cylinder 202 is fixed with the control frame 201; a toothed groove roller 203 is rotationally arranged on the inner side wall of the control frame 201, the toothed groove roller 203 is provided with an elastic member for resetting, in the embodiment, the elastic member is specifically a reset coil spring (not shown in the figure), one end of the elastic member is fixed with the control frame 201, and the other end is fixed with the toothed groove roller 203, after the toothed groove roller 203 is controlled to rotate, the elastic member is released to reset; a toothed groove belt 204 is arranged around the toothed groove roller 203, the toothed groove belt 204 is arranged on the front and rear inner side walls of the control frame 201, the toothed groove roller 203 is provided with a protruding tooth, and the inner ring of the toothed groove belt 204 is provided with a recess, through the cooperation of the protruding tooth and the recess, the toothed groove roller 203 and the toothed groove belt 204 form a meshing transmission pair to realize mutual rotation conversion therebetween; the front and rear inner side walls of the control frame 201 are provided with guide grooves 205 parallel with the toothed groove belt 204; a first mounting frame 206 is slidingly arranged in the control frame 201 through the guide grooves 205, the first mounting frame 206 is displaced in the left-right direction, the first mounting frame 206 is located on the right side of the welding roller 104 and is in contact with the telescopic seat 105, when the telescopic seat 105 moves rightward, the first mounting frame 206 is pushed to move rightward synchronously, the first mounting frame 206 is fixedly connected with the toothed groove belt 204 to realize conversion transmission between the movement of the first mounting frame 206 and the rotation of the toothed groove belt 204; a pressing roller 207 is rotationally arranged on the first mounting frame 206, the pressing roller 207 forms a rolling contact pair with the strip steel to realize dynamic constant pressure control on the strip steel; a limiting frame 208 is fixedly arranged on the front and rear sides of the control frame 201, the limiting frame 208 is arranged on the front and rear sides of the movement track of the welding roller 104; a limiting roller 209 is rotationally arranged on the bottom of the limiting frame 208, and the limiting roller 209 is in contact with the strip steel.

[0034] After the lap joint section of the strip steel is accurately aligned with the spacer 106, the telescopic seat 105 is driven to extend, and the gas cylinder 202 is controlled to move down the control frame 201, the pressing roller 207 and the limiting roller 209 are moved to contact the strip steel, the limiting roller 209 restricts the area to be welded of the strip steel, and the pressing roller 207 presses the lap joint section, so that the position stability of the strip steel is improved through double limiting, the limiting frame 208 is in rolling contact with the strip steel through the limiting roller 209, so as to avoid scratching the surface of the strip steel; then the controller 103 controls the welding roller 104 to move right, and the first mounting frame 206 and the pressing roller 207 are synchronously moved right, so that the pressing roller 207 can restrict the position of the strip steel before welding, effectively reducing the slip of the strip steel caused by the welding roller 104, and improving the welding position precision; during the right movement of the first mounting frame 206, the toothed groove belt 204 is controlled to rotate right, so that the toothed groove roller 203 rotates and causes the internal elastic member to produce torsional deformation, so that when the telescopic seat 105 is reset to the left, the elastic member in the toothed groove roller 203 releases the torque to make it rotate, drives the toothed groove belt 204 to rotate left and controls the first mounting frame 206 to move left to reset, and the movement speed of the telescopic seat 105 will limit the reset speed of the first mounting frame 206, so as to ensure that the device can operate safely and stably.

[0035] The device adopts a structure in which the pressing mechanism is separated from the welding roller 104, and compared with a structure in which the pressing roller 207 is directly fixed on the welding roller 104, the advantages are as follows: firstly, when the pressing roller 207 presses the lap joint section and moves, under the structure feature that the pressing roller 207 is in contact with the welding roller 104, if the pressing roller 207 accidentally contacts the pressure, the pressing roller 207 will release the deformation pressure by moving, that is, the first mounting frame 206 has a certain deformation space, so that the adaptive adjustment of the contact pressure can be realized, and the local stress concentration or deformation caused by rigid contact in the fixed structure can be avoided; secondly, the separated structure can eliminate the problem of combined stress between the pressing roller 207 and the welding roller 104, so as to prolong the service life of the key components; finally, if abnormal resistance occurs during processing, the separated design between the pressing mechanism and the welding roller 104 can be used as a buffer link, which can effectively isolate the transmission of impact force to the welding roller 104, and reduce the damage risk of the welding machine.

[0036] In combination with Figure 1 , Figure 5 and 6As shown, the device further comprises: a material moving mechanism arranged on the support side plate 102 for controlling the movement of the strip steel, after aligning the strip steel, the material moving mechanism will stably move the strip steel by a preset feeding amount to form an accurate overlap section, it should be noted that the drawings of the present embodiment are schematically drawn to highlight the structure of the pad strip 106 for clear display, in actual assembly, the upper surface of the pad strip 106 is coplanar with the upper surface of the support bottom plate 101 to ensure smooth conveying of the strip steel; a set of material moving mechanisms are arranged on the four support side plates 102 on the left and right sides.

[0037] The material moving mechanism comprises: a first mounting block 301 arranged on the support side plate 102, three first mounting blocks 301 are arranged on each support side plate 102, specifically, the first mounting block 301 is slidingly mounted with the support side plate 102, and the first mounting block 301 is displaced in the up-down direction; a moving roller 302 rotatingly mounted on each first mounting block 301, the moving roller 302 is made of rubber material with high friction coefficient, and a groove for increasing friction is arranged on the moving roller 302, so that the moving roller 302 can form a high friction pair with the strip steel, and the moving roller 302 is rotated to control the displacement of the strip steel; a second mounting block 303 arranged on the support side plate 102, three second mounting blocks 303 are arranged on each support side plate 102, specifically, the second mounting block 303 is slidingly mounted with the support side plate 102, and the second mounting block 303 is displaced in the up-down direction, the first mounting block 301 and the second mounting block 303 are symmetrically arranged on the left and right sides of the support side plate 102, and the first mounting block 301 and the second mounting block 303 are positionally matched; a first gear 304 rotatingly mounted on each second mounting block 303, an elastic member for resetting is arranged in the first gear 304, in this embodiment, the elastic member is specifically a reset coil spring (not shown in the figure), one end of the elastic member is fixed with the first gear 304, and the other end is fixed with the second mounting block 303, and the first gear 304 is reset by the elastic member after being controlled to rotate; a transmission shaft 305 fixedly mounted between the moving roller 302 and the first gear 304, the transmission shaft 305 is arranged between the positionally matched first mounting block 301 and the second mounting block 303, and the transmission shaft 305 is slidingly mounted with the support side plate 102; a control bar 306 slidingly mounted between the three second mounting blocks 303, the control bar 306 is displaced in the front-rear direction; three toothed sections 307 corresponding to the first gears 304 are arranged on the control bar 306, each toothed section 307 forms a meshing transmission pair with the first gear 304, and the linear motion of the control bar 306 drives the first gear 304 to rotate accordingly; an auxiliary roller 308 rotatingly mounted on the end of the control bar 306; a first control block 309 fixedly mounted on the control frame 201, a slope module is arranged on the first control block 309, the first control block 309 forms a contact pair with the auxiliary roller 308 through the slope module, when the control frame 201 moves downward, the auxiliary roller 308 moves along the slope, and the vertical displacement of the control frame 201 is converted into the horizontal displacement of the control bar 306, the first control block 309 is detachable, different inclination angle slope modules are replaced, and the adjustable transmission of the displacement of the control bar 306 is realized under the fixed moving distance of the control frame 201.

[0038] When loading the strip steel, the operator puts the strip steel to be welded from the front and rear sides of the supporting bottom plate 101 and completes the initial alignment; when starting the welding process, the control frame 201 goes down to convert the vertical movement into the horizontal displacement of the control bar 306 through the inclined surface module on the first control block 309, and the displacement of the control bar 306 is transmitted to the rotating moving roller 302 through the meshing pair of the convex tooth section 307 and the first gear 304, so as to automatically feed the strip steel to the middle and realize the automatic lap joint of the strip steel; after the strip steel is lapped at a preset distance, the control frame 201 stops moving, and the pressing roller 207 is pressed to move to contact with the strip steel and directly press the lapped section of the strip steel; after the welding is completed, the control frame 201 goes up to return to the original position, the first control block 309 is separated from the auxiliary roller 308, and the elastic member in the first gear 304 can rotate to drive the control bar 306 to move reversely and return to the original position. By selecting inclined surface modules with different inclination angles, adjustable transmission ratios can be obtained under the same stroke of the control frame 201, the length of the lapped section can be accurately controlled, and the positioning process does not need manual intervention. It should be noted that, in order to reduce the friction between the strip steel and the supporting bottom plate 101, a structure for facilitating the movement of the strip steel, such as a roller shaft, can be arranged on the supporting bottom plate 101.

[0039] In combination with Figure 7 and Figure 8 It is shown that the device further comprises an adjusting mechanism arranged on the material moving mechanism for adjusting the position of the moving roller 302. During the loading of the strip steel, the moving roller 302 is in a non-contact standby position, so as to ensure that the strip steel can be pushed into the working area without obstruction, and when the strip steel is welded, the adjusting mechanism adjusts the moving roller 302 to the working state of contacting with the strip steel; one adjusting mechanism is arranged at each group of material moving mechanisms.

[0040] The adjusting mechanism comprises: a first reset spring 401 fixedly installed between the first mounting block 301 and the support side plate 102, the first reset spring 401 being sleeved on the first mounting block 301; an extrusion block 402 slidably installed on the support side plate 102, the extrusion block 402 being provided with three blocks, and the positions of the three blocks correspond to the positions of the three first mounting blocks 301; an adjusting spring 403 fixedly installed between the extrusion block 402 and the first mounting block 301, the elastic coefficient of the adjusting spring 403 being greater than that of the first reset spring 401, when the extrusion block 402 moves, the first mounting block 301 is first driven to move by the adjusting spring 403, so that the first reset spring 401 is first elastically deformed, and then the adjusting spring 403 is elastically deformed; a second mounting frame 404 fixedly installed on the support side plate 102; an extrusion plate 405 slidably installed on the second mounting frame 404, the extrusion plate 405 being provided with three inclined surface groups, the positions of the three inclined surface groups corresponding to the positions of the three extrusion blocks 402, the extrusion plate 405 and the extrusion block 402 forming a contact pair through the inclined surface groups, so that the movement of the extrusion plate 405 is converted into the movement of the extrusion block 402; a second reset spring 406 fixedly installed between the second mounting frame 404 and the extrusion plate 405, the second reset spring 406 being sleeved on the second mounting frame 404; a second control block 407 fixedly installed at the end of the extrusion plate 405, the second control block 407 being provided with an inclined surface matched with the control frame 201, the two forming a contact pair, so that the movement of the control frame 201 is converted into the movement of the second control block 407, the position at which the second control block 407 is in contact with the control frame 201 being higher than the position at which the first control block 309 is in contact with the auxiliary roller 308, so that, during the downward movement of the control frame 201, the control frame 201 first contacts the second control block 407, and then the first control block 309 and the auxiliary roller 308 are brought into contact.

[0041] In the process of loading the strip steel, the moving roller 302 is in the standby position and does not contact the strip steel; after the strip steel is loaded, the control block 201 starts to control the downward movement, in the process, the control block 201 first contacts the second control block 407, drives the extrusion plate 405 to move and compress the second reset spring 406, then the extrusion plate 405 is driven by the transmission cooperation of the slope group and the extrusion block 402, drives the first mounting block 301 to move downward, so that the moving roller 302 contacts the strip steel and compresses the first reset spring 401; after the welding process is completed, the control block 201 moves upward, the second reset spring 406 and the first reset spring 401 restore the deformation, and the extrusion plate 405 and the first mounting block 301 are returned to the original position; because the thickness of the strip steel is small, the moving range of the moving roller 302 is actually small, at this time, the remaining stroke of the control block 201 is sufficient to meet the needs of the subsequent material moving mechanism for the movement of the strip steel, that is, the control block 201 can first complete the contact action of the moving roller 302 and the strip steel, and then drive the roller to rotate to control the displacement of the strip steel; in addition, for strip steels of different thicknesses, adjusting the spring 403 can adaptively adjust the up-down position of the moving roller 302, avoiding the jamming phenomenon of the adjusting mechanism.

[0042] In combination with the embodiments shown in Figure 1 、 Figure 9 and Figure 10 , the device further comprises a limiting mechanism arranged on the support bottom plate 101 for positioning the strip steel, and the limiting mechanism is used to assist in realizing the rapid alignment of the two strip steels.

[0043] The limiting mechanism comprises: a third mounting frame 501 fixedly installed at the bottom of the support bottom plate 101; a limiting frame 502 slidably installed on the third mounting frame 501, the limiting part of the limiting frame 502 passes through the support bottom plate 101 and is located above the support bottom plate 101, and the limiting part of the limiting frame 502 is used to provide a flange limiting function in the process of aligning the strip steel, effectively reducing the repeated adjustment operation caused by the misalignment of the strip steel; it should be noted that, in order to clearly show the structural features of the limiting frame 502, the limiting part is schematically drawn as a relatively wide size in the drawings of the embodiment; a third reset spring 503 fixedly installed between the limiting frame 502 and the support bottom plate 101, the third reset spring 503 is sleeved on the third mounting frame 501; a push frame 506 slidably installed on the left and right sides of the third mounting frame 501; a fourth reset spring 507 fixedly installed between the push frame 506 and the third mounting frame 501, the fourth reset spring 507 is sleeved on the push frame 506; a rotating frame 504 rotatably installed on the two push frames 506, one end of each of the two rotating frames 504 is rotatably installed with the left and right ends of the limiting frame 502; a third control block 505 fixedly installed at the bottom of the control block 201, the third control block 505 is provided with a slope structure, and the slope structures of the two third control blocks 505 form contact pairs with the other ends of the two rotating frames 504.

[0044] During the downward movement of control frame 201, the third control block 505 contacts and engages with the rotating frame 504, so as to... Figure 9 Taking the rotating frame 504 on the left as an example, the downward movement of the third control block 505 drives the rotating frame 504 to rotate clockwise through its inclined structure. During this rotation, the rotating frame 504 will move the lower limiting frame 502, and the push frame 506 connected to the rotating frame 504 will move to the left. The third return spring 503 and the fourth return spring 507 will be stretched. At this time, the limiting part of the limiting frame 502 will retract to below the upper surface of the support base plate 101. Subsequently, when the control frame 201 moves the strip steel through the material transfer mechanism, the strip steel can smoothly intersect to form an overlapping section. After the welding process is completed, the control frame 201 moves upward, and the third return spring 503 and the fourth return spring 507 release elastic potential energy, resetting the limiting frame 502, the push frame 506 and the rotating frame 504 to the initial position.

[0045] Combination Figure 11 and Figure 12 As shown, the device also includes a cleaning mechanism mounted on the pressing mechanism for cleaning the strip steel. The cleaning mechanism is used to remove stains from the strip steel, making the strip steel cleaner for welding and improving welding quality.

[0046] The cleaning mechanism includes: a cleaning brush 601 rotatably mounted on the bottom of the first mounting frame 206, the cleaning brush 601 contacting the strip steel; a rotating rod 602 rotatably mounted on the first mounting frame 206, the rotating rod 602 being fixed to the cleaning brush 601; a transmission rod 603 rotatably mounted inside the top of the first mounting frame 206; bevel gears 604 respectively fixedly mounted on the transmission rod 603 and the rotating rod 602, the two bevel gears 604 forming a meshing transmission pair; a second gear 605 fixedly mounted on the end of the transmission rod 603, the second gear 605 being located outside the first mounting frame 206; and a rack 606 fixedly mounted on the inner side wall of the control frame 201, the rack 606 and the second gear 605 forming a meshing transmission pair.

[0047] When the first mounting bracket 206 and the pressing roller 207 are controlled to move to the right, the second gear 605 and the rack 606 generate relative motion, causing the second gear 605 to rotate. Through the power transmission of the transmission rod 603 and the bevel gear 604 group, the cleaning brush 601 is driven to rotate continuously. Therefore, the cleaning brush 601 performs cleaning operations along the overlapping section of the strip steel, effectively removing surface impurities and improving the welding quality of the strip steel.

[0048] The strip steel is welded by using the device. First, the strip steel to be welded is sent into from the front and rear sides of the supporting bottom plate 101 until the strip steel abuts against the limiting part of the limiting frame 502; second, the control frame 201 is controlled to move downward, and the following controls are sequentially performed during the downward movement of the control frame 201: ① the moving roller 302 is controlled to perform downward movement and establish contact with the strip steel; ② the limiting frame 502 is controlled to move downward, so that the limiting part is withdrawn into the supporting bottom plate 101; ③ the moving roller 302 is controlled to rotate and drive the strip steel to move, so that the lap joint section with a preset distance is formed; ④ the pressing roller 207 is controlled to be pressed downward synchronously with the limiting roller 209, so that the positioning of the strip steel is completed; then, the telescopic seat 105 is controlled to move downward, so that the welding roller 104 is in contact with the strip steel, and the welding roller 104 is controlled to move rightward, so that the strip steel is welded; during the process, the pressing roller 207 is controlled to move rightward synchronously, so that the lap joint area is stabilized, and meanwhile, the cleaning brush 601 is controlled to clean stains before the strip steel is welded, so that the welding quality is improved; finally, after the welding process is completed, the control frame 201 is controlled to move upward, the welding roller 104 is controlled to move leftward to return to the original position, and all the moving parts are returned to the original position.

[0049] While the disclosure has been illustrated and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the disclosure should not be limited to the above-described embodiments, but should be defined by the appended claims and equivalents thereof.

Claims

1. A new type of clamping and pressing device for a narrow lap joint welding machine for strip steel, characterized by: include: The control frame (201) is slidably connected to the welding machine. The welding machine consists of a support base plate (101), a support side plate (102), a controller (103), welding rollers (104), a telescopic seat (105), and a pad (106). The control frame (201) is slidably connected to the controller (103). The controller (103) is provided with a drive component connected to the control frame (201) and providing it with the power to move. The controller (103) controls the welding rollers (104) to move and cooperate with the pads (106) to perform welding processing. The telescopic seat (105) controls the welding rollers (104) to move until they contact the strip steel. It also includes a toothed roller (203) rotatably connected to the control frame (201). The toothed roller (203) is rotatably connected to the control frame (201). 03) An elastic element is provided inside. After the toothed roller (203) is rotated under control, the elastic element returns it to its original position. The toothed belt (204) is wound between the toothed rollers (203). The toothed rollers (203) and the toothed belt (204) cooperate to realize mutual rotation conversion. The first mounting bracket (206) is slidably connected to the control frame (201). The first mounting bracket (206) is set at a lateral position in the direction of travel of the welding roller (104) and contacts the telescopic seat (105). The first mounting bracket (206) is fixedly connected to the toothed belt (204). The pressing roller (207) is rotatably connected to the first mounting bracket (206). The control frame (201) moves the pressing roller (207) to contact the strip steel. The device further includes: a first mounting block (301) disposed on the support side plate (102), with at least two first mounting blocks (301) disposed on each side of the support side plate (102); and movable rollers (302) rotatably connected to each first mounting block (301), the movable rollers (302) forming a contact pair with the strip steel, the movable rollers (302) being provided with grooves to increase friction, so that the rotation of the movable rollers (302) controls the displacement of the strip steel; The device further includes: a second mounting block (303) disposed on the support side plate (102), with at least two second mounting blocks (303) disposed on each side of the support side plate (102), and the first mounting block (301) and the second mounting block (303) symmetrically arranged on the left and right sides of the support side plate (102), with each first mounting block (301) and each second mounting block (303) matched in position; a first gear (304) rotatably connected to each second mounting block (303), with an elastic element disposed inside the first gear (304), and the elastic element causing the first gear (304) to return to its original position after being rotated in a controlled manner; and a transmission shaft (305) fixedly connected between the movable roller (302) and the first gear (304), with the transmission shaft (305) disposed in position. A first mounting block (301) and a second mounting block (303) are positioned to match; a control bar (306) is slidably connected to the second mounting block (303); the control bar (306) is provided with tooth segments (307) in number and position corresponding to the first gear (304), and each tooth segment (307) forms a meshing transmission pair with each first gear (304); an auxiliary roller (308) is rotatably connected to the end of the control bar (306); a first control block (309) is fixedly connected to the control frame (201), and a slope module is provided on the first control block (309). The first control block (309) and the auxiliary roller (308) form a contact pair to convert the vertical displacement of the control frame (201) into the horizontal displacement of the control bar (306).

2. The novel clamping and pressing device for a narrow lap joint welding machine for strip steel according to claim 1, characterized in that: The device further includes: a limiting frame (208) fixedly connected to the control frame (201), the limiting frame (208) being arranged on both sides of the moving track of the welding roller (104); a limiting roller (209) rotatably connected to the bottom of the limiting frame (208), the control frame (201) moving the limiting roller (209) to contact the strip steel.

3. The novel clamping and pressing device for a narrow lap joint welding machine for strip steel according to claim 2, characterized in that: The first control block (309) can be disassembled to replace the inclined plane module with different tilt angles, thereby realizing the adjustable transmission of the displacement of the control bar (306).

4. The novel clamping and pressing device for a narrow lap joint welding machine for strip steel according to claim 3, characterized in that: The first mounting block (301), the second mounting block (303), and the drive shaft (305) are all slidably connected to the support side plate (102); the device further includes: a first return spring (401) fixedly connected between the first mounting block (301) and the support side plate (102); an extrusion block (402) slidably connected to the support side plate (102), the number and position of the extrusion blocks (402) corresponding to the first mounting block (301), and each extrusion block (402) corresponding to each first mounting block (301); a second mounting bracket (404) fixedly connected to the support side plate (102); and an extrusion plate (405) slidably connected to the second mounting bracket (404), the extrusion plate (405) having a set of inclined surfaces, the number and position of the inclined surfaces corresponding to the extrusion blocks (402), and the extrusion plate (405) connecting to the extrusion blocks through the inclined surfaces. (402) A contact pair is formed to realize the conversion of the movement of the extrusion plate (405) to the movement of the extrusion block (402); a second return spring (406) is fixedly connected between the second mounting bracket (404) and the extrusion plate (405); a second control block (407) is fixedly connected to the end of the extrusion plate (405), and the second control block (407) is provided with an inclined surface that cooperates with the control frame (201). The two form a contact pair to convert the movement of the control frame (201) into the movement of the second control block (407); the position of the second control block (407) in contact with the control frame (201) is higher than the position of the first control block (309) in contact with the auxiliary roller (308), so that the control frame (201) first contacts the second control block (407), and then drives the first control block (309) to form a contact with the auxiliary roller (308).

5. The novel clamping and pressing device for a narrow lap joint welding machine for strip steel according to claim 4, characterized in that: The device further includes an adjusting spring (403) fixedly connected between the pressing block (402) and the first mounting block (301). The elastic coefficient of the adjusting spring (403) is greater than that of the first reset spring (401). When the pressing block (402) moves, the first mounting block (301) will move first through the adjusting spring (403), causing the first reset spring (401) to undergo elastic deformation first, and then the adjusting spring (403) will undergo elastic deformation.

6. The novel clamping and pressing device for a narrow lap joint welding machine for strip steel according to claim 5, characterized in that: The device further includes: a third mounting bracket (501) fixedly connected to the bottom of the support base plate (101); a limiting bracket (502) slidably connected to the third mounting bracket (501), the limiting part of the limiting bracket (502) passing through the support base plate (101) and located above the support base plate (101), the limiting part of the limiting bracket (502) being used to provide flange limiting function during strip alignment; and a third return spring (503) fixedly connected between the limiting bracket (502) and the support base plate (101).

7. The novel clamping and pressing device for a narrow lap joint welding machine for strip steel according to claim 6, characterized in that: The device further includes: a pusher (506) slidably connected to the third mounting bracket (501); a fourth return spring (507) fixedly connected between the pusher (506) and the third mounting bracket (501); a rotating bracket (504) rotatably connected to the pusher (506), the rotating bracket (504) being rotatably connected to the limit bracket (502); and a third control block (505) fixedly connected to the bottom of the control frame (201), the third control block (505) and the rotating bracket (504) forming a contact pair to convert the movement of the third control block (505) into the rotation of the rotating bracket (504).

8. The novel clamping and pressing device for a narrow lap joint welding machine for strip steel according to claim 7, characterized in that: The device further includes: a cleaning brush (601) rotatably connected to the bottom of the first mounting frame (206), the cleaning brush (601) contacting the strip steel; a rotating rod (602) rotatably connected to the first mounting frame (206), the rotating rod (602) being fixedly connected to the cleaning brush (601); a transmission rod (603) rotatably connected to the first mounting frame (206); bevel gears (604) respectively fixedly connected to the transmission rod (603) and the rotating rod (602), the two bevel gears (604) forming a meshing transmission pair; a second gear (605) fixedly connected to the end of the transmission rod (603); and a rack (606) fixedly connected to the inner wall of the control frame (201), the rack (606) and the second gear (605) forming a meshing transmission pair.

Images