Solder strip cutting mechanism and solder strip preparation device

Abstract

The utility model relates to the technical field of photovoltaic cell preparation, and particularly discloses a welding strip cutting mechanism and a welding strip preparation device. The welding strip cutting mechanism comprises a supporting frame, a driving assembly, an upper cutter assembly and a lower cutter assembly, the lower cutter assembly is connected with the supporting frame and provided with an inclined cutter face and a plurality of welding strip positioning grooves, and the welding strip positioning grooves are formed in the traction direction of the welding strip and penetrate through the cutter face. An acute angle is formed between the cutter surface and the length extension direction of each welding strip positioning groove; the upper cutter assembly comprises a sliding block and an upper cutter. The sliding block is in sliding connection with the supporting frame, and the sliding direction of the sliding block is parallel to the cutter face. The cutting edge of the upper cutter can move in a manner of being attached to the cutter surface; the driving assembly drives the sliding block to move relative to the supporting frame. According to the welding strip cutting mechanism and the welding strip preparation device, the accuracy of the cutting position of the welding strip can be guaranteed, the phenomenon that the cut welding strip deviates due to contact friction is effectively avoided, and the position accuracy of the welding strip during string preparation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell preparation, in particular to a welding strip cutting mechanism and a welding strip preparation device. Background Art

[0002] In the process of stringing photovoltaic cell modules, several cells need to be connected by welding ribbons to form a whole string of modules. When preparing welding ribbons, multiple welding ribbons are prepared at the same time, specifically including: firstly, the welding ribbon group is pulled forward by the pulling hand, and then the pulled welding ribbon group is cut by the welding ribbon cutting mechanism, and the cut welding ribbon group is carried and transported on the receiving platform, and then the welding ribbon cutting mechanism moves backward to expose the front end of each welding ribbon in the welding ribbon group so that the pulling hand can pull the ribbon for the next time.

[0003] In the prior art, the upper cutter and the lower cutter are usually used to cooperate to vertically cut the welding strip, and the cut welding strip group is carried and transported by the corresponding receiving platform; considering the problem of continuous process, two receiving platforms that can alternately move with each other are used to work simultaneously. However, when this method of vertically cutting welding strips is used, the edge of the welding strip is close to or close to the lower cutter after cutting, and the supporting action of the receiving platform will cause the welding strip group to contact the cutting surface of the lower cutter. The contact friction between the thin welding strip and the cutting surface may cause the position of the welding strip group to shift, thereby affecting the normal stringing action of the battery string.

[0004] In addition, during the preparation of the solder strip, the cutting mechanism needs to move back and forth, which affects the cutting position accuracy of the solder strip. Summary of the invention

[0005] One purpose of the utility model is to provide a welding strip cutting mechanism, which can effectively prevent the cut welding strip from being offset due to contact friction, and ensure the position accuracy of the welding strip when stringing.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A welding strip cutting mechanism comprises a support frame, a driving assembly, and an upper cutting knife assembly and a lower cutting knife assembly arranged above and below;

[0008] The lower cutter assembly is connected to the support frame and is provided with an inclined cutter surface and a plurality of welding strip positioning grooves, each of which is arranged along the welding strip pulling direction and passes through the cutter surface; the cutter surface and the length extension direction of each of the welding strip positioning grooves are arranged at an acute angle;

[0009] The upper cutter assembly comprises a sliding block and an upper cutter connected to the sliding block; the sliding block is slidably connected to the support frame, and the sliding direction of the sliding block is parallel to the cutter surface; the blade of the upper cutter can move in contact with the cutter surface;

[0010] The driving assembly drives the sliding block to move relative to the supporting frame.

[0011] Furthermore, the lower cutter assembly includes a fixed block and a lower cutter connected to one side of the fixed block; the fixed block is connected to the support frame; and the cutter surface is arranged on a side of the lower cutter away from the fixed block.

[0012] Furthermore, a plurality of first positioning grooves are provided at intervals on the lower cutting knife, and a plurality of second positioning grooves are provided at intervals on the top surface of the fixing block, and each of the second positioning grooves is aligned and connected with the corresponding first positioning groove to form the welding strip positioning groove.

[0013] Furthermore, a mounting groove penetrating each of the second positioning grooves is formed on the top surface of the fixing block, and a welding strip pressing rod is arranged in the mounting groove.

[0014] Furthermore, the driving assembly includes an eccentric wheel, a bearing, a connecting plate and a motor installed on the support frame, the motor drives the eccentric wheel to rotate, the inner ring of the bearing is connected to the eccentric wheel, one end of the connecting plate is connected to the outer ring of the bearing, and the other end is hinged to the sliding block.

[0015] Furthermore, the support frame includes two vertical plates arranged opposite to each other, wherein an inverted U-shaped connecting frame is hinged on the top end of one of the vertical plates, and the connecting frame is detachably connected to the other vertical plate through a limit pin; the sliding block is slidably arranged on the inner side of the connecting frame, and the lower cutting knife assembly is connected to the two vertical plates.

[0016] Another purpose of the utility model is to provide a welding strip preparation device, which avoids the situation where the welding strip cutting mechanism needs to move, which is conducive to ensuring the accuracy of the welding strip cutting position. To achieve this purpose, the utility model adopts the following technical solutions:

[0017] A solder strip preparation device comprises a base, a pressing and feeding mechanism, a solder strip pressing mechanism and the above-mentioned solder strip cutting mechanism, wherein the support frame is connected to one end of the base; the solder strip pressing mechanism can press and fix the solder strip group to be cut; the pressing and feeding mechanism is located between the solder strip pressing mechanism and the solder strip cutting mechanism, and can clamp each solder strip in the solder strip group and move it forward so that the front end of the solder strip extends out of the solder strip positioning groove.

[0018] Furthermore, the pressing and feeding mechanism includes a slide, a solder strip connecting plate connected to the slide, a pressing assembly arranged above the solder strip connecting plate, and a transverse movement module; the slide is slidably connected to the base; the pressing assembly can press each solder strip in the solder strip group on the solder strip connecting plate; the transverse movement module drives the slide to move toward or away from the solder strip cutting mechanism.

[0019] Further, the pressing assembly includes a buckle plate and a mounting seat connected up and down to form a closed cavity, the mounting seat is detachably connected to the top of the welding strip connecting plate; a plurality of step holes are opened on the bottom surface of the closed cavity, a T-shaped block movable along the axial direction is arranged in the step hole, the lower end of the T-shaped block extends out of the mounting seat and is connected to a pressure head; a reset spring is arranged between the upper end of the T-shaped block and the inner end surface of the step hole;

[0020] An air inlet is provided on the top surface of the closed cavity, and a flexible adhesive film covering all the step holes is arranged inside.

[0021] Furthermore, a plurality of third positioning grooves are provided on the top surface of the welding strip connecting plate, and each of the third positioning grooves is aligned and communicated with the corresponding welding strip positioning groove.

[0022] Furthermore, it also includes a solder strip anti-slipping mechanism, which is arranged on a side of the solder strip holding mechanism away from the holding and feeding mechanism, and can clamp and fix the solder strip group after the system is powered off.

[0023] The beneficial effects of the utility model are:

[0024] 1. An inclined cutting surface is set on the lower cutting knife assembly, and the cutting surface is set at an acute angle to the length extension direction of the welding tape positioning groove; the upper cutting knife assembly is driven by the driving assembly to move in a direction parallel to the cutting surface, so that the blade of the upper cutting knife can move in contact with the cutting surface, thereby realizing inclined cutting of the welding tape; the cut welding tape falls on the receiving platform and moves away from the cutting surface as the receiving platform moves downward, thereby avoiding the cut welding tape from being offset due to the contact friction of the cutting surface, and ensuring the position accuracy of the welding tape during stringing.

[0025] 2. The pressing and feeding mechanism is used to feed the solder strip over a short distance, which avoids the need for the cutting mechanism to move, and is conducive to ensuring the accuracy of the cutting position. In addition, by setting the pressing and feeding mechanism close to the solder strip cutting mechanism, the problem of the front end of the solder strip being too long and causing the front end of the feeding to be easily bent can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a structural schematic diagram of a welding strip cutting mechanism provided by the utility model.

[0027] Figure 2It is a front view of a welding strip cutting mechanism provided by the utility model.

[0028] Figure 3 It is a side view of a welding strip cutting mechanism provided by the utility model.

[0029] Figure 4 yes Figure 3 The enlarged schematic diagram of point I in FIG.

[0030] Figure 5 The utility model is a structural schematic diagram of a welding strip preparation device provided by the utility model.

[0031] Figure 6 yes Figure 5 Schematic diagram of the structure of the pressure-holding and feeding mechanism.

[0032] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure of the pressing and feeding mechanism.

[0033] Figure 8 yes Figure 7 An enlarged schematic diagram of point II in FIG. DETAILED DESCRIPTION

[0034] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] Embodiment 1

[0036] like Figures 1 to 4 As shown, this embodiment provides a welding ribbon cutting mechanism, including a support frame 1, a driving assembly 2, and an upper cutting knife assembly 3 and a lower cutting knife assembly 4 arranged above and below.

[0037] Specifically, the support frame 1 includes two vertical plates 11 arranged opposite to each other, wherein an inverted U-shaped connecting frame 12 is hingedly connected to the top end of one of the vertical plates 11, and the connecting frame 12 is detachably connected to the other vertical plate 11 via a limiting pin.

[0038] The lower cutter assembly 4 is provided with an inclined cutter surface 44 and a plurality of welding strip positioning grooves 43 . Each welding strip positioning groove 43 is arranged along the welding strip pulling direction and passes through the cutter surface 44 . The cutter surface 44 is arranged at an acute angle to the length extension direction of each welding strip positioning groove 43 .

[0039] In this embodiment, the lower cutter assembly 4 includes a fixed block 41 and a lower cutter 42 connected to one side of the fixed block 41 ; wherein the fixed block 41 is connected to two vertical plates 11 ; and the cutter surface 44 is arranged on the side of the lower cutter 42 away from the fixed block 41 .

[0040] Among them, a plurality of first positioning grooves are spaced apart on the lower cutter 42, and a plurality of second positioning grooves are spaced apart on the top surface of the fixing block 41, and each second positioning groove is aligned and connected with the corresponding first positioning groove to form a welding strip positioning groove 43. Preferably, the cross-section of the first positioning groove and the second positioning groove is V-shaped or expanded U-shaped.

[0041] Furthermore, the top surface of the fixing block 41 is provided with an installation groove that passes through each second positioning groove, and a welding strip pressing rod is arranged in the installation groove. The cut welding strip is easy to stick to the upper cutting knife assembly 3 and cause the welding strip to warp, and the welding strip is easy to deviate from the welding strip positioning groove 43 after it falls after it warps; by arranging the welding strip pressing rod, the welding strip can be effectively prevented from warping, and the welding strip can be accurately positioned in the corresponding welding strip positioning groove 43.

[0042] like Figure 2 and 4 As shown, the upper cutter assembly 3 includes a sliding block 31 and an upper cutter 32 connected to the sliding block 31; the sliding block 31 is slidably arranged on the inner side of the connecting frame 12 through a slide rail, and the sliding direction of the sliding block 31 is parallel to the cutter surface 44; the blade of the upper cutter 32 can move in contact with the cutter surface 44.

[0043] The driving assembly 2 is used to drive the sliding block 31 to move relative to the support frame 1, and includes an eccentric wheel 21, a bearing, a connecting plate 22 and a motor 23 installed on the support frame 1. The motor 23 drives the eccentric wheel 21 to rotate, the inner ring of the bearing is connected to the eccentric wheel 21, one end of the connecting plate 22 is connected to the outer ring of the bearing, and the other end is hinged to the sliding block 31.

[0044] When in use, the eccentric wheel 21 rotates under the drive of the motor 23, and drives the sliding block 31 to reciprocate in the sliding direction through the connecting plate 22, thereby driving the upper cutter 32 to fit the cutting surface 44 of the lower cutter 42 and move along the cutting surface, thereby achieving the cutting of the welding strip. With this structure, the upper and lower cutting actions of the upper blade 32 can be achieved only by the unidirectional rotation of the motor 23, and the structure is simple and the operation is stable.

[0045] In this embodiment, the cutting surface 44 of the lower cutting knife 42 is set at an acute angle to the length extension direction of the welding strip positioning groove 43, and the blade of the upper cutting knife 32 is driven by the driving component 2 to fit with the cutting surface 44 and move along the cutting surface 44, so as to achieve inclined cutting of the welding strip; the cut welding strip falls on the receiving platform and moves away from the cutting surface 44 as the receiving platform moves downward, thereby avoiding the cut welding strip from being offset due to the contact friction of the cutting surface 44, thereby ensuring the position accuracy of the welding strip when stringing.

[0046] Embodiment 2

[0047] like Figures 5 to 8As shown, this embodiment provides a welding strip preparation device, including a base 5, a pressing and feeding mechanism 6, a welding strip pressing mechanism 7 and the welding strip cutting mechanism in the above-mentioned embodiment 1. Among them, the support frame 1 is connected to one end of the base 5; the welding strip pressing mechanism 7 can press and fix the welding strip group to be cut; the pressing and feeding mechanism 6 is located between the welding strip pressing mechanism 7 and the welding strip cutting mechanism, and is arranged close to the welding strip cutting mechanism, and can clamp each welding strip in the welding strip group and move forward so that the front end of the welding strip extends out of the welding strip positioning groove 43.

[0048] like Figures 6 to 8 As shown, the pressing and feeding mechanism 6 includes a slide 61, a solder strip connecting plate 62 connected to the slide 61, a pressing assembly 63 disposed above the solder strip connecting plate 62, and a lateral movement module 64; wherein the slide 61 is slidably connected to the base 5; the pressing assembly 63 can press each solder strip in the solder strip group on the solder strip connecting plate 62; and the lateral movement module 64 drives the slide 61 to move toward or away from the solder strip cutting mechanism. wherein the lateral movement module 64 is preferably an electric linear slide.

[0049] Furthermore, the pressing assembly 63 includes a buckle plate 631 and a mounting seat 632 connected up and down to form a closed cavity, one end of the mounting seat 632 is hinged to the welding strip connecting plate 62, and the other end is detachably connected to the welding strip connecting plate 62 through a limit pin, and a gap is left between the mounting seat 632 and the welding strip connecting plate 62. A plurality of step holes 633 are provided on the bottom surface of the closed cavity, and a T-shaped block 634 movable along the axial direction is provided in the step hole 633, and the lower end of the T-shaped block 634 extends out of the mounting seat 632 and is connected to a pressure head 635; a reset spring 636 is provided between the upper end of the T-shaped block 634 and the inner end surface of the step hole 633; ​​an air inlet is provided on the top surface of the closed cavity, and a flexible adhesive film 637 covering all the step holes 633 is provided inside.

[0050] In the initial state, the lower end of the pressure head 635 is away from the upper surface of the solder strip connecting plate 62, and the upper end of the T-block 634 is in contact with the flexible adhesive film 637 with a certain elasticity; after gas is introduced into the closed cavity through the air inlet, the flexible adhesive film 637 is deformed and acts on the top of the T-block 634, prompting the T-block 634 to overcome the elastic force of the reset spring 636 and move downward, thereby causing the pressure head 635 to press and hold the corresponding solder strip, thereby realizing the clamping action of the solder strip passing therethrough.

[0051] A plurality of third positioning grooves 621 are disposed on the top surface of the solder strip connecting plate 62 , and each third positioning groove 621 is aligned and communicated with a corresponding solder strip positioning groove 43 , so as to position the solder strip passing through the solder strip connecting plate 62 .

[0052] In the welding strip preparation device, the welding strip holding mechanism 7 includes an upper pressing plate, a lower positioning plate and a lifting cylinder arranged up and down, wherein a plurality of fourth positioning grooves for positioning the welding strip are opened on the top surface of the lower positioning plate, and each fourth positioning groove is aligned and connected with the corresponding welding strip positioning groove 43; the lifting cylinder drives the upper pressing plate to move downward to press the welding strip in the corresponding fourth positioning groove.

[0053] During the process of the pressing and feeding mechanism 6 feeding each soldering strip forward, the soldering strip pressing mechanism 7 keeps the state of loosening the soldering strip; after the pressing and feeding mechanism 6 feeds each soldering strip in the soldering strip group forward into place, the soldering strip pressing mechanism 7 clamps and fixes the soldering strip, so as to accurately clamp and fix the soldering strip after the pressing and feeding mechanism 6 is reset.

[0054] The welding strip preparation device also includes a welding strip transition plate 9 and a welding strip anti-slip mechanism 8. The welding strip transition plate 9 is rotatably arranged at one end of the base 5 away from the welding strip cutting mechanism. The welding strip anti-slip mechanism 8 is arranged between the welding strip transition plate 9 and the welding strip holding mechanism 7, and is used to clamp and fix the welding strip group after the system is powered off, so as to prevent the welding strip from being separated from the welding strip preparation device under the action of the heavy hammer, so as to avoid the need for manual re-threading, which makes the threading process very cumbersome. In this embodiment, the structure of the welding strip anti-slip mechanism 8 can adopt the same structure as the welding strip holding mechanism 7, or other structures for clamping the welding strip, as long as the welding strip can be clamped and fixed.

[0055] The utility model discloses a welding strip preparation device. After the welding strip cutting mechanism cuts the welding strip, the upper cutter assembly 3 is driven by the driving assembly 2 to move upward and reset; the welding strip pressing mechanism 7 releases the clamping of the welding strip; the pressing and feeding mechanism 6 clamps the welding strip and moves it forward to feed it a short distance, so that the front end of each welding strip extends out of the welding strip positioning groove 43, avoiding the situation that the welding strip cutting mechanism needs to move its position, which is conducive to ensuring the accuracy of the cutting position; in addition, by arranging the pressing and feeding mechanism 6 close to the welding strip cutting mechanism, the problem that the front end of the welding strip is too long and easy to bend when being fed can be avoided.

[0056] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A welding strip cutting mechanism, characterized in that: It comprises a support frame (1), a driving assembly (2), and an upper cutting assembly (3) and a lower cutting assembly (4) arranged above and below; The lower cutter assembly (4) is connected to the support frame (1) and is provided with an inclined cutter surface (44) and a plurality of welding strip positioning grooves (43), each of the welding strip positioning grooves (43) being arranged along the welding strip pulling direction and penetrating the cutter surface (44); the cutter surface (44) and the length extension direction of each of the welding strip positioning grooves (43) are arranged at an acute angle; The upper cutter assembly (3) comprises a sliding block (31) and an upper cutter (32) connected to the sliding block (31); the sliding block (31) is slidably connected to the support frame (1), and the sliding direction of the sliding block (31) is parallel to the cutter surface (44); the blade of the upper cutter (32) can move in contact with the cutter surface (44); The driving component (2) drives the sliding block (31) to move relative to the supporting frame (1).

2. A welding strip cutting mechanism according to claim 1, characterized in that: The lower cutter assembly (4) comprises a fixed block (41) and a lower cutter (42) connected to one side of the fixed block (41); the fixed block (41) is connected to the support frame (1); and the cutter surface (44) is arranged on a side of the lower cutter (42) facing away from the fixed block (41).

3. A welding strip cutting mechanism according to claim 2, characterized in that: The lower cutter (42) is provided with a plurality of first positioning grooves at intervals, and the top surface of the fixing block (41) is provided with a plurality of second positioning grooves at intervals, and each of the second positioning grooves is aligned and connected with the corresponding first positioning groove to form the welding strip positioning groove (43).

4. A welding strip cutting mechanism according to claim 3, characterized in that: The top surface of the fixing block (41) is provided with an installation groove penetrating each of the second positioning grooves, and a welding strip pressing rod is arranged in the installation groove.

5. A welding strip cutting mechanism according to claim 1, characterized in that: The driving assembly (2) comprises an eccentric wheel (21), a bearing, a connecting plate (22) and a motor (23) mounted on the support frame (1); the motor (23) drives the eccentric wheel (21) to rotate; the inner ring of the bearing is connected to the eccentric wheel (21); one end of the connecting plate (22) is connected to the outer ring of the bearing, and the other end is hinged to the sliding block (31).

6. A welding strip cutting mechanism according to claim 1, characterized in that: The support frame (1) comprises two vertical plates (11) arranged opposite to each other, wherein an inverted U-shaped connecting frame (12) is hingedly connected to the top end of one of the vertical plates (11), and the connecting frame (12) is detachably connected to the other vertical plate (11) via a limit pin; the sliding block (31) is slidably arranged on the inner side of the connecting frame (12), and the lower cutting knife assembly (4) is connected to the two vertical plates (11).

7. A welding strip preparation device, characterized in that: It comprises a base (5), a pressing and feeding mechanism (6), a solder strip pressing mechanism (7) and the solder strip cutting mechanism according to any one of claims 1 to 6, wherein the support frame (1) is connected to one end of the base (5); the solder strip pressing mechanism (7) is capable of pressing and fixing a solder strip group to be cut; the pressing and feeding mechanism (6) is located between the solder strip pressing mechanism (7) and the solder strip cutting mechanism, and is capable of clamping each solder strip in the solder strip group and moving it forward so that the front end of the solder strip extends out of the solder strip positioning groove (43).

8. A welding strip preparation device according to claim 7, characterized in that: The pressing and feeding mechanism (6) comprises a slide seat (61), a solder strip connecting plate (62) connected to the slide seat (61), a pressing assembly (63) arranged above the solder strip connecting plate (62), and a transverse module (64); the slide seat (61) is slidably connected to the base (5); the pressing assembly (63) is capable of pressing each solder strip in the solder strip group onto the solder strip connecting plate (62); and the transverse module (64) drives the slide seat (61) to move toward or away from the solder strip cutting mechanism.

9. A welding strip preparation device according to claim 8, characterized in that: The holding assembly (63) comprises a buckle plate (631) and a mounting seat (632) connected to form a closed cavity, wherein the mounting seat (632) is detachably connected to the top of the welding strip connecting plate (62); a plurality of step holes (633) are provided on the bottom surface of the closed cavity, and a T-shaped block (634) movable in the axial direction is provided in the step hole (633), and the lower end of the T-shaped block (634) extends out of the mounting seat (632) and is connected to a pressure head (635); a return spring (636) is provided between the upper end of the T-shaped block (634) and the inner end surface of the step hole (633); An air inlet is provided on the top surface of the closed cavity, and a flexible adhesive film (637) covering all the step holes (633) is provided inside.

10. A welding strip preparation device according to claim 7, characterized in that: It also comprises a solder strip anti-slipping mechanism (8), which is arranged on a side of the solder strip holding mechanism (7) away from the holding and feeding mechanism (6) and can clamp and fix the solder strip group after the system is powered off.

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