阅读说明：本技术 一种三角焊带摆动传送机构 (Triangular welding strip swinging and conveying mechanism ) 是由 王兴娜 于 2021-06-21 设计创作，主要内容包括：本发明涉及焊带生产技术领域,公开一种三角焊带摆动传送机构,一种三角焊带摆动传送机构,包括侧壁设置有收线轮的机体、设置于机体上的控制器以及于机体设置有收线轮的一侧设置的可沿着收线轮的轴向往复运动的安装板,收线轮的转动受控于一电机,安装板上设置有摆动传线部件,摆动传线部件包括转动设置于安装板上的第一转轴、于第一转轴外环壁向外延伸设置的随着第一转轴的转动上下摆动的第一摆臂以及于第一摆臂远离第一安装板的一侧转动设置的第一传线轮,在安装板上设置有检测第一摆臂摆动角度的传感器,传感器和电机均与控制器连接,该摆动传送机构在避免焊带发生断裂或脱离的情况下能够提高节能性能。(The invention relates to the technical field of welding strip production, and discloses a triangular welding strip swinging and conveying mechanism which comprises a machine body, a controller and a mounting plate, wherein the side wall of the machine body is provided with a wire take-up wheel, the mounting plate is arranged on one side of the machine body, the side of the machine body is provided with the wire take-up wheel and can reciprocate along the axial direction of the wire take-up wheel, the rotation of the wire take-up wheel is controlled by a motor, a swinging wire transmission part is arranged on the mounting plate and comprises a first rotating shaft, a first swinging arm and a first wire transmission wheel, the first rotating shaft is rotatably arranged on the mounting plate, the first swinging arm extends outwards from the outer ring wall of the first rotating shaft and swings up and down along with the rotation of the first rotating shaft, and the first wire transmission wheel is rotatably arranged on one side of the first swinging arm, which is far away from the first mounting plate, a sensor for detecting the swing angle of the first swing arm is arranged on the mounting plate, the sensor and the motor are both connected with the controller, the swing conveying mechanism can improve the energy-saving performance under the condition of avoiding the breakage or separation of the welding strip.)

1. The utility model provides a triangle welds area swing transport mechanism, includes organism (1) that the lateral wall was provided with take-up pulley (8), set up controller on organism (1) and can be along mounting panel (2) of the axial reciprocating motion of take-up pulley (8) that one side that organism (1) was provided with take-up pulley (8) set up, the rotation of take-up pulley (8) is controlled by a motor, its characterized in that: the swing wire transmission component is arranged on the mounting plate (2) and comprises a first rotating shaft (14) rotatably arranged on the mounting plate (2), a first swing arm (3) which extends outwards from the outer ring wall of the first rotating shaft (14) and swings up and down along with the rotation of the first rotating shaft (14), and a first wire transmission wheel (4) rotatably arranged on one side, away from the first mounting plate (2), of the first swing arm (3), a sensor (13) for detecting the swing angle of the first swing arm (3) is arranged on the mounting plate (2), the sensor (13) and the motor are both connected with the controller, and when the first swing arm (3) moves upwards to a preset angle, the controller controls the motor to reduce a certain rotating speed; when the first swing arm (3) moves downwards to a preset angle, the controller controls the motor to increase a certain rotating speed.

2. The fillet welding strip swing transmission mechanism as claimed in claim 1, wherein: be provided with the first paying out machine structure that can reduce motor frequency conversion frequency on mounting panel (2), first paying out machine structure includes on mounting panel (2) in first wire transmission wheel (4) be close to one side rotation second pivot (15) that take-up pulley (8) set up, in outside second swing arm (16) of the outside extension setting of outer rampart of second pivot (15) and in second wire transmission wheel (5) of the one side rotation setting of mounting panel (2) are kept away from in second swing arm (16), be provided with between first swing arm (3) and second swing arm (16) and drive the link gear of both counter swings, during the normality, first wire transmission wheel (4) are located the below of second wire transmission wheel (5), first wire transmission wheel (4) butt in the top of welding the area and second wire transmission wheel (5) butt in the below of welding the area.

3. The fillet welding strip swing transmission mechanism as claimed in claim 2, wherein: the linkage mechanism comprises a first gear (11) concentrically and fixedly arranged on a first rotating shaft (14) and a second gear (12) concentrically and fixedly arranged on a second rotating shaft (15) and meshed with the first gear (11).

4. The fillet welding strip swinging and conveying mechanism according to any one of claims 1 to 3, characterized in that: the second pay-off mechanism capable of reducing the frequency conversion frequency of the motor is arranged on the first swing arm (3), the second pay-off mechanism comprises the first swing arm (3), the first swing arm (3) comprises an upper swing arm (31) connected with the first rotating shaft (14) and a lower swing arm (32) connected with the first transmission wheel (4), the lower swing arm (32) is pivoted on the upper swing arm (31) and can move downwards to be parallel to the upper swing arm (31), and a limiting mechanism capable of limiting the excessive upward swinging of the lower swing arm (32) is arranged on the upper swing arm (31).

5. The fillet welding strip swing transmission mechanism as claimed in claim 4, wherein: the limiting mechanism comprises a stop block (17) which is arranged at one end of the upper swing arm (31) close to the lower swing arm (32) and inclines upwards towards the direction of the lower swing arm (32).

6. The fillet welding strip swing transmission mechanism as claimed in claim 5, wherein: an adjusting mechanism capable of adjusting the angle of the stop block (17) is arranged on the lower swing arm (32).

7. The fillet welding strip swing transmission mechanism as claimed in claim 6, wherein: the adjusting mechanism comprises a concave groove at one end of the upper swing arm (31) close to the lower swing arm (32), a stop block (17) with the lower end partially positioned in the groove and an adjusting rod (21) which is simultaneously in penetrating fit with the stop block (17) and the groove, the adjusting rod (21) comprises a round rod section (211) and an angle adjusting section (212) which is larger than the round rod section (211), and when the round rod section (211) penetrates through two sides of the stop block (17), the stop block (17) can be turned over up and down; when the angle adjusting section (212) is partially inserted into the stop block (17), the stop block (17) is fixed on the upper swing arm (31).

8. The fillet welding strip swing transfer mechanism as claimed in claim 7, wherein: the adjusting rod (21) is provided with a quick adjusting mechanism for quickly switching the positions of the round rod section (211) and the angle adjusting section (212), the quick adjusting mechanism comprises a limiting block (18) arranged at one end, far away from the angle adjusting section (212), of the round rod section (211), an abutting spring (19) which is arranged between the limiting block (18) and the outer wall of the upper swing arm (31) on the round rod section (211) and drives the angle adjusting section (212) to be partially inserted into a stop block, and a lifting part (20) arranged at one end, far away from the round rod section (211), of the angle adjusting section (212).

9. The fillet welding strip swing transfer mechanism as claimed in claim 7, wherein: the angle adjusting section (212) is in a gear rod shape or a regular polygon shape.

10. The fillet welding strip swing transmission mechanism as claimed in claim 2, wherein: at least 1 third wire transmission wheel (6) which is lower than the lowest movement height of the second wire transmission wheel (5) and at least 1 fourth wire transmission wheel (7) which is higher than the highest movement height of the second wire transmission wheel (5) are sequentially arranged on the mounting plate (2) at intervals on one side of the second wire transmission wheel (5) far away from the first wire transmission wheel (4).

Technical Field

The invention relates to the technical field of welding strip production, in particular to a triangular welding strip swinging and conveying mechanism.

Background

The production process in the photovoltaic solder strip manufacturing industry is various, and Chinese patent with publication number CN1082131058B discloses a copper flat strip production line production process special for a photovoltaic solder strip converging strip, which mainly comprises the steps of material preparation, pre-drawing, continuous rolling, drawing, conductive annealing, drying, winding and the like, wherein in the process of changing a copper wire into the photovoltaic solder strip, the copper wire is always driven by a winding mechanism at a terminal and is sequentially conveyed by a plurality of conveying wheels, a winding wheel is rotatably arranged on the winding mechanism at the terminal, and the rotation of the winding wheel is controlled by a servo motor.

Because the number of the transmission wheels is large, the transmission speed between the transmission wheels has deviation, and once the rotating speed of the winding wheel is too high, the welding strip can be broken; and the rolling wheel rotational speed is too slow, then can lead to the photovoltaic solder strip to break away from the transfer gear, so, need design a structure can balance the transmission frequency between transfer gear and the rolling wheel to ensure the stability of photovoltaic solder strip conveying.

Disclosure of Invention

The invention aims to provide a triangular welding strip swinging and conveying mechanism which can obviously improve the conveying stability of a photovoltaic welding strip and avoid the problem of breakage or separation.

In order to solve the technical problems, the invention provides the following technical scheme: a kind of triangular welding strip swings the conveying mechanism, including the organism that the sidewall has take-up pulley, the controller that is set up on organism and can be along the mounting panel of the axial reciprocating motion of the take-up pulley that set up on one side that the organism has take-up pulley, the rotation of the take-up pulley is controlled by a motor, there are swing wire-transferring components on the mounting panel, swing wire-transferring component include rotate set up in first spindle on mounting panel, extend outside first spindle outer annular wall first swing arm that swing up and down with the rotation of first spindle and keep away from first side of first mounting panel to rotate first wire-transferring wheel set up in first swing arm, there is sensor to detect first swing arm swing angle on the mounting panel, sensor and motor are connected with controller, when the first swing arm moves up to the preset angle, the controller controls the motor to reduce certain rotational speed; when the first swing arm moves downwards to a preset angle, the controller controls the motor to increase a certain rotating speed.

Further, be provided with the first paying out machine structure that can reduce motor frequency conversion frequency on the mounting panel, first paying out machine constructs including the second pivot that rotates the setting in one side that first biography line wheel is close to the take-up pulley on the mounting panel, the second swing arm that sets up and rotate the second biography line wheel that sets up in one side that the mounting panel was kept away from in the outer rampart of second pivot outwards extends, be provided with the link gear who orders about both counter swings between first swing arm and second swing arm, during the normality, first biography line wheel is located the below of second biography line wheel, first biography line wheel butt is in the top of welding the area and second biography line wheel butt is in the below of welding the area.

Furthermore, the linkage mechanism comprises a first gear which is concentrically and fixedly arranged on the first rotating shaft and a second gear which is concentrically and fixedly arranged on the second rotating shaft and is meshed with the first gear.

Furthermore, a second pay-off mechanism capable of reducing the frequency conversion frequency of the motor is arranged on the first swing arm, the second pay-off mechanism comprises a first swing arm, the first swing arm comprises an upper swing arm connected with the first rotating shaft and a lower swing arm connected with the first transmission line wheel, the lower swing arm is pivoted on the upper swing arm and can move downwards to be parallel to the upper swing arm, and a limiting mechanism for limiting the excessive upward swing of the lower swing arm is arranged on the upper swing arm.

Furthermore, stop gear includes the dog that the one end that is close to lower swing arm in the last swing arm inclines upward to swing arm direction down and sets up.

Furthermore, an adjusting mechanism capable of adjusting the angle of the stop block is arranged on the lower swing arm.

Furthermore, the adjusting mechanism comprises a concave groove at one end of the upper swing arm close to the lower swing arm, a stop block with the lower end partially positioned in the groove and an adjusting rod which is simultaneously in inserting fit with the stop block and the groove, the adjusting rod comprises a round rod section and an angle adjusting section which is larger than the round rod section, and when the round rod section penetrates through two sides of the stop block, the stop block can be turned over up and down; when the angle adjusting section is partially inserted into the stop block, the stop block is fixed on the upper swing arm.

Furthermore, be provided with the fast adjusting mechanism of fast switch-over pole section and angle modulation section position on adjusting the pole, fast adjusting mechanism includes the stopper of keeping away from the one end setting of angle modulation section in the pole section, the butt spring of dog and the portion of carrying that the one end setting of keeping away from the pole section in the angle modulation section was kept away from the pole section to the butt spring of ordering about the angle modulation section local insertion that sets up between stopper and last swing arm outer wall in the pole section.

Furthermore, the angle adjusting section is in a gear rod shape or a regular polygon shape.

Furthermore, at least 1 third wire transmission wheel and at least 1 fourth wire transmission wheel which are lower than the lowest motion height of the second wire transmission wheel and higher than the highest motion height of the second wire transmission wheel are sequentially arranged on the mounting plate at intervals on one side of the second wire transmission wheel, which is far away from the first wire transmission wheel.

Compared with the prior art, the invention has the following beneficial effects:

1. the technical scheme is that a swinging wire transmission component is additionally arranged near a wire take-up wheel and aims to balance the speed difference between a transmission wheel and the wire take-up wheel on other stations, the swinging wire transmission component comprises a first swing arm, a first wire transmission wheel positioned on the first swing arm, a controller and a sensor, when the wire take-up wheel is faster than the transmission wheel, the first swing arm swings upwards, when the first swing arm swings upwards, a welding strip can be tensioned to release the welding strip partially pressed downwards by the gravity of the welding strip, the tensioning force is in the bearing range of the welding strip at the moment, when the first swing arm swings upwards to a preset angle, the sensor detects the angle and sends a signal to the controller, and the controller controls a motor to reduce a certain rotating speed so as to avoid the breakage of the welding strip; on the contrary, when the take-up pulley was slower than the transfer gear, first swing arm lower hem played the effect that the area was welded in the tensioning, when its lower hem was to predetermineeing the angle, the sensor detected this angle and sent signal for the controller, and the controller control motor improves certain rotational speed in order to avoid welding the area and break away from first wire wheel.

2. A first pay-off mechanism is additionally arranged and comprises a second swing arm and a second wire transmission wheel positioned on the second swing arm, the first swing arm and the second swing arm realize relative motion through a linkage mechanism, the first swing arm is positioned below the second swing arm in a normal state, when the wire is tensioned, the first swing arm moves upwards, the second swing arm moves downwards to release the wire positioned between the first swing arm and the second swing arm, when a sensor senses that the first swing arm swings upwards to a preset angle, a signal is sent to a controller, and the controller controls a motor connected with the wire transmission wheel to decelerate to a proper rotating speed; when the line is not hard up, first swing arm downstream under the action of gravity, second swing arm upward movement, can avoid welding the area and can store the part and weld the area and be used for follow-up balanced velocity difference of putting out when breaking away from on the first transfer line wheel, when first swing arm lower hem was to predetermineeing the angle, sensor send signal gives the controller, the motor that the controller control take-up pulley is connected accelerates to suitable rotational speed, through above-mentioned structure, can realize receiving line and unwrapping wire function in the certain limit, can not cause the fracture of welding the area or break away from on the one hand, on the other hand can reduce the variable frequency of motor, thereby it is more environmental protection and energy saving.

3. Set up second paying out machine structure, divide into swing arm and lower swing arm with first swing arm, the sensor response is the angle transformation of last swing arm, after the pin joint between lower swing arm and the last swing arm, through baffle and dog spacing lower swing arm motion angle relatively last swing arm respectively, wherein, the maximum motion stroke of swing arm relatively last swing arm downstream is a straight line for both, the maximum motion stroke of swing arm relatively last swing arm upward movement down is realized through the dog, thereby the dog can realize the regulation of angle through adjusting the structure and increase the suitability, through second paying out machine structure, before arousing first paying out machine structure, realize the unwrapping wire by second paying out machine structure and further reduce motor frequency conversion, further improve energy-conserving performance under the circumstances of guaranteeing that the solder strip is not broken or break away from.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is an isometric view of a triangular solder strip swing feed mechanism of the present invention in cooperation with a take-up reel;

FIG. 2 is a top view of a triangular solder strip oscillating conveyor mechanism of the present invention;

FIG. 3 is an enlarged view of A in FIG. 2;

FIG. 4 is an isometric view of an adjustment lever of the present invention;

fig. 5 is an isometric view of a delta weld ribbon oscillating conveyor mechanism of the present invention.

In the figure: 1. a body; 2. mounting a plate; 3. a first swing arm; 31. an upper swing arm; 32. a lower swing arm; 4. a first wire transfer wheel; 5. a second wire transfer wheel; 6. a third wire transfer wheel; 7. a fourth wire transfer wheel; 8. a take-up pulley; 9. a cylinder; 10. a fixing plate; 11. a first gear; 12. a second gear; 13. a sensor; 14. a first rotating shaft; 15. a second rotating shaft; 16. a second swing arm; 17. a stopper; 18. a limiting block; 19. an abutment spring; 20. a pulling section; 21. adjusting a rod; 211. a round bar section; 212. an angle adjusting section.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Examples

A triangular welding strip swinging and conveying mechanism is disclosed, referring to fig. 1-5, comprising a machine body 1 with a take-up pulley 8 arranged on the side wall, a controller arranged on the machine body 1 and a mounting plate 2 arranged on one side of the machine body 1 provided with the take-up pulley 8 and capable of reciprocating along the axial direction of the take-up pulley 8, wherein the reciprocating motion of the mounting plate 2 is controlled by a cylinder 9 or a motor lead screw group arranged in the machine body 1, the scheme adopts a double-cylinder 9, the cylinder 9 is arranged in parallel and the cylinder body is fixed on a fixing plate 10 in the machine body 1, the rear end part of the piston rod of the cylinder 9 extending out of the machine body 1 is fixedly connected with the mounting plate 2, the reciprocating motion of the mounting plate 2 along the axial direction of the take-up pulley 8 is realized by the reciprocating expansion of the cylinder 9, the rotation of the take-up pulley 8 is controlled by a motor which is a servo motor arranged in the machine body 1, a swinging wire-passing component is arranged on the mounting plate 2, the swinging wire transmission component comprises a first rotating shaft 14 rotatably arranged on the mounting plate 2, a first swing arm 3 which extends outwards from the outer ring wall of the first rotating shaft 14 and swings up and down along with the rotation of the first rotating shaft 14, and a first wire transmission wheel 4 rotatably arranged on one side of the first swing arm 3 far away from the first mounting plate 2, a sensor 13 for detecting the swinging angle of the first swing arm 3 is arranged on the mounting plate 2, the sensor 13 can adopt an angle sensor 13 which is manufactured by Laien technology and is of an EL-WDA type, the sensor 13 and the motor are both connected with the controller, and when the first swing arm 3 moves upwards to a preset angle, the controller controls the motor to reduce a certain rotating speed; when the first swing arm 3 moves downwards to a preset angle, the controller controls the motor to increase a certain rotating speed.

A first paying-off mechanism capable of reducing the frequency conversion frequency of the motor is arranged on the mounting plate 2, as shown in fig. 2 and 5, the first paying-off mechanism comprises a second rotating shaft 15 which is rotatably arranged on one side of the first transmission wheel 4 close to the take-up pulley 8 on the mounting plate 2, a second swing arm 16 which is outwards extended from the outer annular wall of the second rotating shaft 15, and a second transmission wheel 5 which is rotatably arranged on one side of the second swing arm 16 far away from the mounting plate 2, and a linkage mechanism which drives the first swing arm 3 and the second swing arm 16 to reversely swing is arranged between the first swing arm 3 and the second swing arm 16.

The linkage mechanism comprises a first gear 11 concentrically and fixedly arranged on a first rotating shaft 14 and a second gear 12 concentrically and fixedly arranged on a second rotating shaft 15 and meshed with the first gear 11, in the scheme, the second rotating shaft 15 is positioned above the first rotating shaft 14, so that in a normal state, the first wire transmission wheel is positioned below the second wire transmission wheel, the first wire transmission wheel 4 is abutted to the upper side of the welding strip, and the second wire transmission wheel 5 is abutted to the lower side of the welding strip.

Because the second gear 12 and the first gear 11 are in a meshed state, when the rotation speed of the motor and the rotation speed of the conveying wheel with the motor in the whole assembly line have slight forward speed difference, the take-up pulley can increase the tensile force to drive the first wire transmission wheel 4 positioned below to move upwards, and meanwhile, the second wire transmission wheel 5 can be caused to move downwards to pay off, so that the welding belt is prevented from being too tight and broken; when the rotation speed of the motor and the rotation speed of the conveying wheel with the motor in the whole assembly line have slight negative speed difference, the take-up pulley can reduce the tension to drive the first wire transmission wheel 4 to move downwards, and meanwhile, the second wire transmission wheel 5 can be caused to move upwards to take up the wire so as to avoid the welding strip from sliding out of the first wire transmission wheel 4, in the structure, the limit of paying off is that the first wire transmission wheel 4 is positioned below the second wire transmission wheel 5, and the welding strip positioned between the first wire transmission wheel 4 and the second wire transmission wheel 5 is in a horizontal state; the limit of the wire take-up is that the first wire transfer wheel 4 is positioned above the second wire transfer wheel 5, and the welding strip positioned between the first wire transfer wheel 4 and the second wire transfer wheel 5 is in a horizontal state.

In order to further reduce the frequency conversion frequency of the motor under the condition of ensuring that the welding strip is continuous, a second paying-off mechanism capable of reducing the frequency conversion frequency of the motor is arranged on the first swing arm 3, as shown in fig. 2-5, the second paying-off mechanism comprises a first swing arm 3, the first swing arm 3 comprises an upper swing arm 31 connected with the first rotating shaft 14 and a lower swing arm 32 connected with the first wire transmission wheel 4, the lower swing arm 32 is pivoted on the upper swing arm 31 and can move downwards to be parallel to the upper swing arm 31, specifically, a baffle extends towards the lower swing arm 32 at the lower end of the upper swing arm 31, the lower swing arm 32 is pivoted above the baffle, the lower swing arm 32 continuously swings downwards relative to the upper swing arm 31 when being in a straight line with the upper swing arm 31 through the baffle, a limiting mechanism for limiting the lower swing arm 32 to excessively upwards swing is arranged on the upper swing arm 31, the limiting mechanism comprises a stop 17 which is obliquely and obliquely arranged at the end, close to the lower swing arm 32, of the upper swing arm 31, when the lower swing arm 32 is parallel to the upper swing arm 31, an included angle of 5-30 degrees is formed between the stop 17 and the lower swing arm 32.

In order to flexibly adjust the angle of the stop 17, an adjusting mechanism capable of adjusting the angle of the stop 17 is arranged on the lower swing arm 32, as shown in fig. 3 and 4, the adjusting mechanism comprises a concave groove at one end of the upper swing arm 31 close to the lower swing arm 32, the stop 17 with the lower end partially positioned in the concave groove, and an adjusting rod 21 simultaneously in inserting fit with the stop 17 and the concave groove, the stop is arranged at the bottom of the concave groove, the lower swing arm 32 is simultaneously pivoted in the concave groove, the stop 17 is positioned between the lower swing arm 32 and the bottom of the concave groove, the adjusting rod 21 comprises a round rod section 211 and an angle adjusting section 212 larger than the round rod section 211, the angle adjusting section 212 is in a gear rod shape or a regular polygon shape, preferably in a gear rod shape, the gear rod in the invention has 72 teeth, therefore, the precision of angle adjustment is 5 degrees, a through groove for the round rod section 211 to pass through back and forth and for partially inserting the angle adjusting section 212 is arranged in the stop 17, a through hole for the penetration of the round rod section 211 is arranged on one side of the groove, and an adjusting groove for the penetration of the angle adjusting section 212 is arranged on the other side of the groove, so that the stop block 17 can be turned over up and down when the round rod section 211 penetrates through the two sides of the stop block 17; when the angle adjusting section 212 is partially inserted into the stopper 17, the stopper 17 is fixed to the upper swing arm 31.

Be provided with the quick adjustment mechanism of fast switch-over round bar section 211 and angle modulation section 212 position on adjusting pole 21, quick adjustment mechanism includes the stopper 18 of the one end setting of keeping away from angle modulation section 212 in round bar section 211, what set up between stopper 18 and the outer wall of last swing arm 31 on round bar section 211 orders about angle modulation section 212 local insertion dog with stopper 17 relatively go up swing arm 31 pivoted butt spring 19 and in angle modulation section 212 keep away from the lifting portion 20 that the one end setting of round bar section 211, lifting portion 20 in this scheme is a pull ring, can realize the rotation or spacing of baffle through the pulling or loosen the pull ring.

The effect that sets up dog 17 is, when the motor speed is faster than the rotational speed of other station biography wheels, lower swing arm 32 can be earlier put up and carry out preliminary unwrapping wire, when its swing to when contacting with dog 17, it puts up and orders about second swing arm 16 downswing in step to go up swing arm 31, carry out multistep unwrapping wire with the unwrapping wire step according to the difference of motor speed difference like this, can enough avoid welding the area to be pulled apart, again can the fine speed difference of self-adaptation regulation, when the last swing of swing arm 31 is sensed to preset the angle to angle sensor 13, send signal for the controller, the motor that controller control and take-up pulley 8 are connected changes the rotational speed, thereby reach energy-conserving effect.

In order to ensure that the welding strip can be accurately received by the take-up pulley 8, at least 1 third wire transmission wheel 6 which is lower than the lowest motion height of the second wire transmission wheel 5 and at least 1 fourth wire transmission wheel 7 which is higher than the highest motion height of the second wire transmission wheel 5 are sequentially arranged on the mounting plate 2 at intervals on one side of the second wire transmission wheel 5 far away from the first wire transmission wheel 4, and the welding strip sequentially passes through the first wire transmission wheel 4, the second wire transmission wheel 5, the third wire transmission wheel 6 and the fourth wire transmission wheel 7 and then is connected with the take-up pulley 8.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.