Tin plating machine line pressing assembly for photovoltaic welding strip production and welding strip production device

Abstract

The utility model relates to the technical field of photovoltaic welding strip processing, in particular to a tin plating machine line pressing assembly for photovoltaic welding strip production and a welding strip production device, which comprises a fixing plate, a supporting mechanism is arranged on the fixing plate, a circular guide wheel is rotatably connected onto the supporting mechanism, and the guide wheel is in clearance fit with the supporting mechanism. The outer edge face of the guide wheel is provided with a contact face capable of making contact with the photovoltaic welding strip. A semicircular plate is replaced with a rotatable circular guide wheel structure to reduce relative friction between a copper wire and the guide wheel, abrasion to the guide wheel is reduced, and therefore the service life of the guide wheel is prolonged, the guide wheel is in clearance fit with the supporting mechanism, it is guaranteed that the guide wheel can freely rotate relative to the supporting mechanism, and the service life of the copper wire is prolonged. Therefore, the copper wire and the guide wheel cannot move relatively, abrasion of the guide wheel and the copper wire is reduced, the service life of the guide wheel can be prolonged, the surface quality of the tin-coated copper wire can be improved, and the quality of a welding strip is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic welding strip processing, in particular to a tin coating machine crimping assembly for photovoltaic welding strip production. Background Art

[0002] In the existing equipment for producing copper wire, in the tinning station, after the copper wire enters the tin furnace horizontally and tilted, an arc device is needed to change the direction of the copper wire to an upward vertical state, so that the tinned copper wire can be cooled by air. This arc device is called differently in the industry, such as "pressing plate", "half-moon wheel", "semi-circular wheel", "tinning tooling" and so on. This semi-circular wheel is one of the core parts in the tinning machine equipment.

[0003] like Figure 1 As shown in the figure, this is the semicircular wheel used in the tin coating machine. Since this semicircular wheel is in the hot molten tin liquid at a temperature of 230-300℃ for a long time and is subjected to high-speed friction of the copper wire, there are special requirements for the material and surface coating of the semicircular wheel, which requires high temperature resistance and wear resistance. At the same time, since the semicircular wheel itself is fixed, and the copper wire and the semicircular wheel are in a high-temperature and high-speed friction relationship, the grooves on the semicircular wheel are easily worn to form grooves, which reduces the service life of the semicircular wheel. At the same time, the copper wire will also wear out, and the copper wire will increase the wear of the copper wire when it rubs against the grooves on the semicircular wheel, affecting the product quality. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problem and to design a wire crimping assembly for a tin coating machine for producing photovoltaic welding strips, which solves the problem that high-temperature and high-speed friction between the existing semicircular plate and the copper wire easily causes wear of the semicircular plate and the copper wire.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is a wire crimping assembly of a tin coating machine for producing photovoltaic welding strips, comprising a fixed plate, on which a supporting mechanism is arranged, and a circular guide wheel is rotatably connected to the supporting mechanism, and there is a clearance fit between the guide wheel and the supporting mechanism, and a contact surface that can contact the photovoltaic welding strip is arranged on the outer edge surface of the guide wheel.

[0006] Preferably, the supporting mechanism is a supporting mechanism, which includes an outer baffle plate and a rotating shaft, one end of the rotating shaft is connected to the outer baffle plate, and the other end passes through the central through hole of the guide wheel and is connected to the fixed plate, and the rotating shaft and the central through hole of the guide wheel are clearance-fitted, and a gap is left between the two side surfaces of the guide wheel and the outer baffle plate and the fixed plate.

[0007] Preferably, the outer baffle and the rotating shaft are threadedly connected or integrally connected.

[0008] Preferably, one end of the rotating shaft is threadedly connected to the fixing plate.

[0009] Preferably, a threaded hole is formed at one end of the rotating shaft away from the outer baffle plate, a bolt is arranged in the threaded hole, and the rotating shaft is fixed to the fixing plate by the bolt.

[0010] Preferably, a through hole is provided on the rotating shaft, a bolt is provided in the through hole, and the bolt passes through the through hole and is threadedly connected to the fixing plate.

[0011] Preferably, the fixing plate protrudes outward from the plate surface to form a limiting portion, and a gap is left between the side surface of the guide wheel and the limiting portion.

[0012] Preferably, an inner baffle plate is provided at one end of the rotating shaft away from the outer baffle plate, and a gap is left between the guide wheel and the inner baffle plate.

[0013] Preferably, a limiting groove is provided along the circumference of the contact surface.

[0014] The technical solution of the utility model also discloses a welding strip production device, comprising the wire pressing assembly as described above.

[0015] Compared with the prior art, the beneficial effects are:

[0016] The utility model aims at the friction structure between the copper wire and the guide wheel, replaces the semicircular plate with a rotatable circular guide wheel structure to reduce the relative friction between the copper wire and the guide wheel, reduces the wear on the guide wheel, and thus improves the service life of the guide wheel. The guide wheel and the support mechanism are clearance-matched to ensure that the guide wheel can rotate freely relative to the support mechanism. Under the action of static friction, the guide wheel and the copper wire will drive the guide wheel to rotate freely. In this way, no relative movement occurs between the copper wire and the guide wheel, and the wear on the guide wheel and the copper wire is reduced, which can not only improve the service life of the guide wheel, but also improve the surface quality of the copper wire after tinning, thereby improving the quality of the welding strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a semicircular plate used in the prior art;

[0018] Figure 2 is a front view structural schematic diagram of the wire pressing assembly in Example 1;

[0019] Figure 3 is a schematic structural diagram of the support mechanism in the pressure wire assembly in Example 1;

[0020] Figure 4 is a schematic diagram of the exploded structure of the support mechanism in Example 1;

[0021] Figure 5 is a schematic structural diagram of the support mechanism in Example 2;

[0022] Figure 6 is a schematic structural diagram of the support mechanism in Example 3;

[0023] Figure 7 is a schematic structural diagram of the support mechanism in Example 4;

[0024] Figure 8 is a schematic structural diagram of the support mechanism in Example 5;

[0025] Fig. 9 It is a schematic diagram of the assembly structure of the wire crimping component.

[0026] In the figure, 1, semicircular plate; 2, fixed plate; 201, limiting part; 3, guide wheel; 301, limiting groove; 4, supporting mechanism; 41, outer baffle plate; 42, rotating shaft; 43, inner baffle plate; 5, bolt; 6, sliding seat; 7, lifting drive mechanism; 8, three-coordinate adjustment mechanism; 9, fixed seat; 10, wind knife assembly. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] like Figure 2-Figure 4 As shown, a preferred embodiment of the utility model proposes a wire crimping assembly for a tin coating machine for photovoltaic welding ribbon production, the wire crimping assembly mainly includes components such as a fixing plate 2, a supporting mechanism 4 and a guide wheel 3, wherein the guide wheel 3 is a circular plate, a through hole is opened in the middle of the guide wheel 3, and the supporting mechanism 4 is composed of an outer baffle 41 and a rotating shaft 42. In this embodiment, the ends of the outer baffle 41 and the rotating shaft 42 can be integrally connected or threadedly connected, and of course, an integral connection is preferred;

[0030] A through hole is provided in the axial direction of the rotating shaft 42, and a bolt 5 is provided in the through hole. The bolt 5 passes through the through hole on the rotating shaft 42 and is threadedly connected to the fixing plate 2. An inner baffle plate 43 is provided on the rotating shaft 42, and a certain gap is also left between the guide wheel 3 and the inner baffle plate 43 so that the guide wheel 3 can rotate smoothly.

[0031] refer to Figure 3A contact surface is provided on the circumference of the outer edge of the guide wheel 3, and the contact surface is in contact with the copper wire. At the same time, a circle of limiting grooves 301 are provided along the circumference of the contact surface to limit the movement of the copper wire and prevent the copper wire from sliding out of the contact surface along the axial direction of the guide wheel 3. The copper wire enters the limiting groove 301 from the lower side of the guide wheel 3 and turns through the limiting groove 301, and then passes out from the top. Since the guide wheel 3 and the supporting mechanism 4 are clearance-matched and can rotate freely, when the copper wire moves at high speed, the copper wire will drive the guide wheel 3 to rotate under the action of static friction, so that no dynamic friction will be generated between the guide wheel 3 and the copper wire, and no wear will occur between the guide wheel 3 and the copper wire, which can not only improve the service life of the guide wheel 3, but also improve the quality of the copper wire.

[0032] If a conventionally designed semicircular plate 1 is used, when the copper wire moves at high speed, friction generates heat, and a temperature of more than 300°C will be generated between the semicircular plate 1 and the copper wire. Under this temperature, the hardness of the semicircular plate 1 will decrease, causing the grooves on the semicircular plate 1 to form grooves due to the linear friction of the copper wire, affecting the movement of the copper wire and causing greater wear on the surface of the copper wire, affecting the quality of tin coating, so the defect is very large.

[0033] In this embodiment, the support mechanism 4 is made of graphite. Since graphite has strong thermal stability and high temperature resistance, it is more suitable for processing workpieces that work in high temperature environments. Moreover, the strength of graphite increases with the increase of temperature, so it is not easy to deform. In addition, graphite has good lubricity, so the friction coefficient between the support mechanism 4 made of graphite and the guide wheel 3 will be very small, which is conducive to the rotation of the guide wheel 3.

[0034] The guide wheel 3 is made of high-speed steel. Since high-speed steel has excellent properties such as high hardness, high wear resistance and high heat resistance, the processed guide wheel 3 is more suitable for working in a high temperature environment and is not prone to wear. The guide wheel 3 can also be made of inferior steel. In this case, it is necessary to apply a coating on the surface of the guide wheel 3. The coating includes three layers: DLC vacuum coating layer, chromium aluminum layer, and titanium nitride layer, which can improve the wear resistance and heat resistance of the guide wheel 3.

[0035] Example 2

[0036] like Figure 5 As shown, the inner baffle plate 43 may not be provided in this embodiment. The difference is that the rotating shaft 42 passes through the through hole in the center of the guide wheel 3 and is threadedly connected to the fixed plate 2, and there is a clearance fit between the guide wheel 3 and the rotating shaft 42. Appropriate gaps are left between the two side surfaces of the guide wheel 3 and the outer baffle plate 41 and the fixed plate 2 to ensure that the guide wheel 3 can rotate smoothly.

[0037] Example 3

[0038] like Figure 6As shown, in this embodiment, a threaded hole is opened at one end of the rotating shaft 42 away from the outer baffle 41, and a bolt 5 is threadedly connected to the threaded hole. One end of the rotating shaft 42 can be fixedly connected to the fixing plate 2 by the bolt 5, which can also ensure that the supporting mechanism 4 is tightly connected to the fixing plate 2.

[0039] Example 4

[0040] like Figure 7 As shown, in this embodiment, a limiting portion 201 is provided on the fixed plate 2, and the limiting portion 201 is formed by protruding outward from the plate surface of the fixed plate 2, so that the guide wheel 3 and the fixed plate 2 can be separated, and the contact area between the guide wheel 3 and the fixed plate 2 is reduced, and the friction is reduced, so as to facilitate the smooth rotation of the guide wheel 3, and an appropriate gap is also left between the side of the guide wheel 3 and the limiting portion 201.

[0041] Example 5

[0042] like Figure 8 As shown, in this embodiment, an inner baffle plate 43 is provided on the rotating shaft 42, and one end of the rotating shaft 42 away from the outer baffle plate 41 is threadedly connected to the inner baffle plate 43, and appropriate gaps are left between the two side surfaces of the guide wheel 3 and the outer baffle plate 41 and the inner baffle plate 43.

[0043] The wire pressing assembly in the above-mentioned embodiment can be used in a photovoltaic welding ribbon production device, such as Fig. 9 As shown, this is a way to install the wire crimping assembly.

[0044] The fixed plate 2 is generally installed and fixed on a sliding seat 6, and the sliding seat 6 is connected to the slide rail on the tin coating machine by sliding up and down. A lifting drive mechanism 7 is arranged at the bottom of the sliding seat 6, which is used to control the lifting and lowering of the sliding seat 6, and a three-coordinate adjustment mechanism 8 is also arranged on the sliding seat 6, and a fixed seat 9 is arranged on the three-coordinate adjustment mechanism 8. A wind knife assembly 10 is arranged at the bottom of the fixed seat 9. The horizontal, longitudinal and vertical positions of the wind knife assembly 10 can be adjusted by the three-coordinate adjustment assembly, and the wind knife assembly 10 is located directly above the guide wheel 3. After the copper wire enters the guide wheel 3 horizontally, it turns vertically upward through the wind knife assembly 10 through the guide wheel 3. The wind knife assembly 10 can accelerate the cooling and forming of the tin liquid on the surface of the copper wire. Compared with the traditional semicircular plate 1, the guide wheel 3 with a circular structure can minimize the wear of the copper wire, thereby improving the tin coating quality of the copper wire surface, and effectively solving the problem of short life of the guide wheel 3 of the tin coating machine.

[0045] In the above embodiment, if the support mechanism 4 is replaced with a bearing, since the temperature of the tin liquid in the tin pool is as high as 230-300°C, the bearing cannot work normally under such a high temperature. The premise for the bearing to work normally is that it needs a certain lubricity, but under high temperature conditions, the lubricity of the bearing cannot meet the requirements. If the bearing is installed on the guide wheel 3, the guide wheel 3 will be unable to rotate. Therefore, the clearance fit between the support mechanism 4 and the guide wheel 3 is a preferred embodiment.

[0046] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A tinning machine crimping assembly for photovoltaic ribbon production, comprising a fixing plate (2), characterized in that: The fixing plate (2) is provided with a support mechanism (4), and a circular guide wheel (3) is rotatably connected to the support mechanism (4), and there is a clearance fit between the guide wheel (3) and the support mechanism (4), and a contact surface capable of contacting the photovoltaic welding strip is provided on the outer edge surface of the guide wheel (3).

2. A tin coating machine crimping assembly for photovoltaic ribbon production according to claim 1, characterized in that: The support mechanism (4) comprises an outer baffle (41) and a rotating shaft (42), one end of the rotating shaft (42) is connected to the outer baffle (41), and the other end passes through the central through hole of the guide wheel (3) and is connected to the fixed plate (2), and the rotating shaft (42) and the central through hole of the guide wheel (3) are clearance-matched, and clearances are left between the two side surfaces of the guide wheel (3) and the outer baffle (41) and the fixed plate (2).

3. A tin coating machine crimping assembly for photovoltaic ribbon production according to claim 2, characterized in that: The outer baffle (41) and the rotating shaft (42) are threadedly connected or integrally connected.

4. A tin coating machine crimping assembly for photovoltaic welding ribbon production according to claim 3, characterized in that: One end of the rotating shaft (42) is threadedly connected to the fixing plate (2).

5. A tin coating machine crimping assembly for photovoltaic welding ribbon production according to claim 2, characterized in that: A threaded hole is formed at one end of the rotating shaft (42) away from the outer baffle plate (41), a bolt (5) is arranged in the threaded hole, and the rotating shaft (42) is fixed to the fixing plate (2) by the bolt (5).

6. A tin coating machine crimping assembly for photovoltaic welding ribbon production according to claim 2, characterized in that: The rotating shaft (42) is provided with a through hole, a bolt (5) is arranged in the through hole, and the bolt (5) passes through the through hole and is threadedly connected to the fixing plate (2).

7. A tin coating machine crimping assembly for photovoltaic ribbon production according to claim 2, characterized in that: The fixing plate (2) protrudes outward from the plate surface to form a limiting portion (201), and a gap is left between the side surface of the guide wheel (3) and the limiting portion (201).

8. The tin coating machine crimping assembly for photovoltaic welding ribbon production according to claim 2, characterized in that: An inner baffle (43) is provided at one end of the rotating shaft (42) away from the outer baffle (41), and a gap is left between the guide wheel (3) and the inner baffle (43).

9. The tin coating machine crimping assembly for photovoltaic welding ribbon production according to claim 1, characterized in that: A limiting groove (301) is provided along the circumference of the contact surface.

10. A welding strip production device, characterized in that: It comprises a wire crimping assembly as described in any one of claims 1 to 9.

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