阅读说明：本技术 一种变压器用高精度可控板型的超宽铜带及其制备工艺 (High-precision controllable-plate-type ultra-wide copper strip for transformer and preparation process thereof ) 是由 魏锦 关胜利 洪岩 朱林宸 支吉标 于 2021-06-16 设计创作，主要内容包括：本发明提供了一种变压器用高精度可控板型的超宽铜带及其制备工艺,属于铜带生产技术领域。它解决了现有的变压器用铜带的制备工艺获得的铜带性能不高的问题。本制备工艺包括铸造成锭、拉铸、加热、开胚、粗轧、退火、清洗、精轧、收卷、定中、质检等工序。与现有技术相比,本制备工艺获得的超宽铜带精度标准高,且在包装过程中不会产生折皱,份量的检验过程严格可靠并准确。(The invention provides a high-precision controllable-plate type ultra-wide copper strip for a transformer and a preparation process thereof, and belongs to the technical field of copper strip production. The method solves the problem that the copper strip obtained by the existing preparation process of the copper strip for the transformer is low in performance. The preparation process comprises the procedures of ingot casting, heating, blank opening, rough rolling, annealing, cleaning, finish rolling, centering, quality inspection and the like. Compared with the prior art, the ultra-wide copper strip obtained by the preparation process has high precision standard, no crease is generated in the packaging process, and the inspection process of the weight is strict, reliable and accurate.)

1. A preparation process of a high-precision controllable-plate type ultra-wide copper strip for a transformer is characterized by comprising the following steps of:

step 1: putting a copper block raw material into a copper dissolving tower to be dissolved to obtain copper liquid, and then pouring the copper liquid into a casting mold to cast into an ingot;

step 2: carrying out melting and drawing casting treatment on the copper block;

and step 3: putting the copper block into a stepping furnace for heating, and performing hot rolling and blank opening after heating to obtain a coarse material;

and 4, step 4: putting the coarse material into a rough rolling mill for rough rolling;

and 5: putting the rough material after rough rolling into a bell jar furnace for primary annealing, and then cleaning the rough material after annealing for the first time;

step 6: putting the coarse material into a finishing mill for primary finish rolling to obtain a refined material;

and 7: carrying out secondary annealing on the refined material, and then carrying out secondary cleaning on the refined material after the annealing is finished;

and 8: putting the refined material into a Simmark finishing mill for secondary finishing rolling to obtain a strip-shaped semi-finished product;

and step 9: annealing the semi-finished product for three times, and then cleaning the semi-finished product to obtain a copper strip finished product;

step 10: putting the copper strip into a film covering device, covering a protective film, cutting the copper strip, putting the copper strip into a covering device, and winding and packaging the copper strip to obtain a copper strip coil;

step 11: and (4) putting the copper strip coil into a fixed-weight detection device, detecting the weight of the copper strip coil, and rewinding if the weight does not reach the standard or exceeds the standard.

2. The preparation process of the high-precision controllable-plate type ultra-wide copper strip for the transformer as claimed in claim 1, wherein the preparation process comprises the following steps: the annealing temperature of the primary annealing is 450-500 ℃, the temperature rise time is 4-5 h, and the heat preservation time is 7-8 h; the annealing temperature of the secondary annealing is 350-400 ℃, the temperature rising time is 4-5 h, and the heat preservation time is 4-6 h; the third annealing temperature is 250-300 ℃, the temperature rise time is 4-5 hours, and the heat preservation time is 4-6 hours.

3. The preparation process of the high-precision controllable-plate type ultra-wide copper strip for the transformer as claimed in claim 1, wherein the preparation process comprises the following steps: the rolling force of the rough rolling is 420N-450N, and the rolling speed is 700 m/min.

4. The preparation process of the high-precision controllable-plate type ultra-wide copper strip for the transformer as claimed in claim 1, wherein the preparation process comprises the following steps: the primary finish rolling force is 440N-460N, and the rolling speed is 750 m/min.

5. The preparation process of the high-precision controllable-plate type ultra-wide copper strip for the transformer as claimed in claim 1, wherein the preparation process comprises the following steps: the rolling force of the secondary finish rolling is 470N-480N, and the rolling speed is 700 m/min.

6. The process for preparing the high-precision controllable plate type ultra-wide copper strip for the transformer as claimed in any one of claims 1, wherein the process comprises the following steps: the rewinding device comprises a winding support (1), a winding driving part (2) fixedly arranged on the winding support (1), a winding roller (3) rotationally arranged on the winding support (1) and providing rotational power through the winding driving part (2), a tensioning support (4) and three tensioning rollers (5) rotationally arranged on the tensioning support (4), wherein rotating axes of the three tensioning rollers (5) are positioned on three points of an inverted isosceles triangle, the tensioning support (4) comprises a left side support and a right side support, three tensioning chutes are vertically formed in the inner side surfaces of the left side support and the right side support, a tensioning sliding block (6) is arranged in each tensioning chute, two ends of each tensioning roller (5) are respectively rotationally arranged on the tensioning sliding block (6) in which the tensioning roller is positioned, and a tensioning adjusting part for adjusting the high position of the tensioning sliding block (6) is further arranged on the tensioning support (4), the tension adjusting component is used for synchronously adjusting the phase positions of the three tension rollers (5) to adjust the tension degree of the copper strip in the initial state.

7. The process for preparing the high-precision controllable plate type ultra-wide copper strip for the transformer as claimed in claim 6, wherein the process comprises the following steps: the tensioning adjusting part comprises a left slide rail (7), a middle slide rail (8) and a right slide rail (9) which are vertically and fixedly arranged on a tensioning support (4), tensioning slide blocks (6) are respectively arranged on the left slide rail (7), the middle slide rail (8) and the right slide rail (9) in a sliding manner, a middle slide block (10) is further arranged on the middle slide rail (8) in a sliding manner, a first screw hole is vertically formed in each tensioning slide block (6) on the middle slide rail (8), a second screw hole is vertically formed in each middle slide block (10), a screw rod (11) is further rotatably arranged on the tensioning support (4), the screw rod (11) is matched with the first screw hole of each tensioning slide block (6) and the second screw hole of each middle slide block (10), the tensioning slide blocks (6) and the middle slide blocks (10) synchronously move in the same direction after the screw rods (11) rotate, telescopic rods (12) are respectively rotatably connected to two sides of the middle slide blocks (10), the other ends of the two telescopic rods (12) are respectively connected to the tensioning sliding blocks (6) on the left sliding rail (7) and the right sliding rail (9) in a rotating mode, the middle of each telescopic rod (12) is connected with the tensioning support (4) in a rotating mode, each telescopic rod (12) comprises an inner rod and an outer rod which are arranged in a sliding mode, and the outer rods are connected with the tensioning support (4) in a rotating mode.

8. The process for preparing the high-precision controllable plate type ultra-wide copper strip for the transformer as claimed in any one of claims 1, wherein the process comprises the following steps: the fixed weight detection device in step 11 comprises a fixed weight support, a disc frame (13) fixedly arranged on the fixed weight support, an upright post (14) vertically fixed on the disc frame (13), a bearing plate (15) movably sleeved on the upright post (14) through a center hole in a lifting manner, a bearing spring (16) sleeved on the upright post (14), and a fixed weight detection assembly, wherein a profile piece (17) is arranged on the bearing plate (15), a groove (18) used for placing a copper tape roll is formed in the profile piece (17), two ends of the bearing spring (16) are respectively abutted against the bearing plate (15) and the disc frame (13), the fixed weight detection assembly comprises a support body (19) fixedly arranged at the bottom of the bearing plate (15) and insulated, a conductive rod (20) fixedly arranged on the support body (19), a signal lamp (21) and a battery body (22) fixedly arranged on the fixed weight support, and two conductive blocks (23) fixedly arranged on the fixed weight support and positioned at two ends of the conductive rod (20), two conducting blocks (23) and signal lamp (21), battery body (22) pass through wire (24) intercommunication, conducting block (23) have a take the altitude, two conducting blocks (23) can form the route with conducting block (23) contact after bearing plate (15) descend, the four corners of bearing plate (15) still are equipped with directional hole, still fixedly on the basis weight support be equipped with four directional posts (25), directional hole sliding sleeve establishes on directional post (25), conducting block (23) are vertical adjustable for the basis weight support.

9. The process for preparing the high-precision controllable plate type ultra-wide copper strip for the transformer as claimed in any one of claims 1, wherein the process comprises the following steps: the film covering device in the step 10 comprises a shell frame, film covering components which are symmetrically arranged on the shell frame up and down, and a driving component arranged on the shell frame; the film covering component comprises a film covering roller (26) and a raw material roller (27) which are rotatably arranged on the shell frame, a large amount of raw material films are wound on the raw material roller (27), and the raw material films are wound on the film covering roller (26) after being pulled out from the raw material roller (27); a gap (28) for the plate to pass through is arranged between the two film coating rollers (26); the driving part comprises a driving motor (29) fixedly arranged on a shell frame, a driving gear (30) fixedly arranged at the end part of an output shaft of the driving motor (29), a change gear (31) rotatably arranged on the shell frame and a driven gear (32) fixedly arranged on a film coating roller (26), the driving gear (30) and the change gear (31) have the same parameters, the two driven gears (32) have the same parameters, two ends of the driving gear (30) are respectively meshed with the change gear (31) and one driven gear (32), and the change gear (31) is meshed with the other driven gear (32).

10. The high-precision controllable-plate-type ultra-wide copper strip for the transformer, which is prepared according to the preparation process of the high-precision controllable-plate-type ultra-wide copper strip for the transformer in any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of copper strip production, and relates to a high-precision controllable plate type ultra-wide copper strip for a transformer and a preparation process thereof.

Background

As a metal element, a copper tape is widely used in various products, such as electric components, switches, gaskets, electric vacuum devices, heat sinks, conductive base materials, and various parts such as automobile water tanks, heat sinks, and cylinder sheets. Among them, the copper tape used in the electric components in the transformer needs high requirements in the preparation process and higher requirements in the packaging process because of the high standard precision requirement of the copper tape.

Disclosure of Invention

The invention aims to provide a high-precision controllable plate type ultra-wide copper strip for a transformer and a preparation process thereof, aiming at the problem that the copper strip obtained by the existing preparation process of the copper strip for the transformer is low in performance.

The purpose of the invention can be realized by the following technical scheme:

a preparation process of a high-precision controllable-plate type ultra-wide copper strip for a transformer is characterized by comprising the following steps of:

step 1: putting a copper block raw material into a copper dissolving tower to be dissolved to obtain copper liquid, and then pouring the copper liquid into a casting mold to cast into an ingot;

step 2: carrying out melting and drawing casting treatment on the copper block;

and step 3: putting the copper block into a stepping furnace for heating, and performing hot rolling and blank opening after heating to obtain a coarse material;

and 4, step 4: putting the coarse material into a rough rolling mill for rough rolling;

and 5: putting the rough material after rough rolling into a bell jar furnace for primary annealing, and then cleaning the rough material after annealing for the first time;

step 6: putting the coarse material into a finishing mill for primary finish rolling to obtain a refined material;

and 7: carrying out secondary annealing on the refined material, and then carrying out secondary cleaning on the refined material after the annealing is finished;

and 8: putting the refined material into a Simmark finishing mill for secondary finishing rolling to obtain a strip-shaped semi-finished product;

and step 9: annealing the semi-finished product for three times, and then cleaning the semi-finished product to obtain a copper strip finished product;

step 10: putting the copper strip into a film covering device, covering a protective film, cutting the copper strip, putting the copper strip into a covering device, and winding and packaging the copper strip to obtain a copper strip coil;

step 11: and (4) putting the copper strip coil into a fixed-weight detection device, detecting the weight of the copper strip coil, and rewinding if the weight does not reach the standard or exceeds the standard.

In the preparation process of the high-precision controllable-plate type ultra-wide copper strip for the transformer, the annealing temperature of primary annealing is 450-500 ℃, the temperature rise time is 4-5 hours, and the heat preservation time is 7-8 hours; the annealing temperature of the secondary annealing is 350-400 ℃, the temperature rising time is 4-5 h, and the heat preservation time is 4-6 h; the third annealing temperature is 250-300 ℃, the temperature rise time is 4-5 hours, and the heat preservation time is 4-6 hours.

In the preparation process of the high-precision controllable-plate-type ultra-wide copper strip for the transformer, the rough rolling force is 420N-450N, and the rolling speed is 700 m/min.

In the preparation process of the high-precision controllable-plate type ultra-wide copper strip for the transformer, the primary finish rolling force is 440N-460N, and the rolling speed is 750 m/min.

In the preparation process of the high-precision controllable-plate type ultra-wide copper strip for the transformer, the rolling force of the secondary finish rolling is 470N-480N, and the rolling speed is 700 m/min.

In the above-mentioned manufacturing process of the high-precision controllable-plate type ultra-wide copper strip for the transformer, the rewinding device described in step 10 includes a winding support, a winding driving member fixedly disposed on the winding support, a winding roller rotatably disposed on the winding support and providing rotational power through the winding driving member, a tensioning support, and three tensioning rollers rotatably disposed on the tensioning support, the rotation axes of the three tensioning rollers are located at three points of an inverted isosceles triangle, the tensioning support includes a left side support and a right side support, three tensioning chutes are vertically formed on inner side surfaces of the left side support and the right side support, a tensioning slide block is disposed in each tensioning chute, two ends of the tensioning rollers are respectively rotatably disposed on the respective tensioning slide blocks, and a tensioning adjusting member for adjusting the high position of the tensioning slide block is further disposed on the tensioning support, the tension adjusting component is used for synchronously adjusting the phase positions of the three tension rollers to adjust the tension degree of the copper strip in the initial state.

In the preparation process of the high-precision controllable plate type ultra-wide copper strip for the transformer, the tensioning adjusting part comprises a left slide rail, a middle slide rail and a right slide rail which are vertically and fixedly arranged on a tensioning support, tensioning slide blocks are respectively arranged on the left slide rail, the middle slide rail and the right slide rail in a sliding manner, a middle slide block is also arranged on the middle slide rail in a sliding manner, a first screw hole is vertically arranged on the tensioning slide block on the middle slide rail, a second screw hole is vertically arranged on the middle slide block, a screw rod is further rotatably arranged on the tensioning support, the screw rod is matched with the first screw hole of the tensioning slide block and the second screw hole of the middle slide block, the tensioning slide block and the middle slide block on the middle slide rail synchronously move in the same direction after the screw rod rotates, telescopic rods are respectively rotatably connected to two sides of the middle slide block, the other ends of the two telescopic rods are respectively rotatably connected to the tensioning slide blocks on the left slide rail and the right slide rail, and the middle of the telescopic rods is rotatably connected to the tensioning support, the telescopic link includes interior pole and the outer pole that slides to set up each other, and outer pole and tensioning support rotate to be connected.

In the above process for preparing a high-precision controllable plate type ultra-wide copper strip for a transformer, the fixed-weight detection device in step 11 comprises a fixed-weight support, a plate frame fixedly arranged on the fixed-weight support, a vertical column vertically fixed on the plate frame, a bearing plate movably sleeved on the vertical column through a central hole, a bearing spring sleeved on the vertical column, and a fixed-weight detection assembly, wherein the bearing plate is provided with a shaped piece, a groove for placing a copper strip coil is formed in the shaped piece, two ends of the bearing spring are respectively abutted against the bearing plate and the plate frame, the fixed-weight detection assembly comprises a support body fixedly arranged at the bottom of the bearing plate and insulated, a conductive rod fixedly arranged on the support body, a signal lamp and a battery body fixedly arranged on the fixed-weight support, and two conductive blocks fixedly arranged on the fixed-weight support and positioned at two ends of the conductive rod, the two conductive blocks are communicated with the signal lamp and the battery body through wires, the conducting blocks have a certain height, the two conducting blocks can be in contact with the conducting blocks to form a passage after the bearing plate descends, the four corners of the bearing plate are further provided with directional holes, the weight-fixing support is further fixedly provided with four directional columns, the directional holes are slidably sleeved on the directional columns, and the conducting blocks are vertically adjustable relative to the weight-fixing support.

In the above manufacturing process of the high-precision controllable-plate type ultra-wide copper strip for the transformer, the film covering device in the step 10 comprises a shell frame, film covering components which are arranged on the shell frame in an up-down symmetrical manner, and a driving component arranged on the shell frame; the film covering component comprises a film covering roller and a raw material roller which are rotatably arranged on the shell frame, a large amount of raw material films are wound on the raw material roller, and the raw material films are wound on the film covering roller after being pulled out from the raw material roller; a gap for the plate to pass through is formed between the two film coating rollers; the driving part comprises a driving motor fixedly arranged on the shell frame, a driving gear fixedly arranged at the end part of an output shaft of the driving motor, a change gear rotatably arranged on the shell frame and driven gears fixedly arranged on the film covering roller shaft, the driving gear and the change gear have the same parameters, the parameters of the two driven gears are also the same, two ends of the driving gear are respectively meshed with the change gear and one of the driven gears, and the change gear is meshed with the other driven gear.

The high-precision controllable-plate-type ultra-wide copper strip for the transformer is prepared by the preparation process for the high-precision controllable-plate-type ultra-wide copper strip for the transformer.

Compared with the prior art, the ultra-wide copper strip obtained by the preparation process has high precision standard, no crease is generated in the packaging process, and the inspection process of the weight is strict, reliable and accurate.

Drawings

FIG. 1 is a schematic diagram of the rewinding device;

FIG. 2 is a schematic view of the structure of the tension adjusting member;

FIG. 3 is a schematic view of the upper view structure of the constant weight detecting device;

FIG. 4 is a schematic view of the lower side view structure of the constant weight detecting device;

FIG. 5 is a schematic view of the structure of the film covering device;

in the figure, 1, a support is rolled; 2. rolling a driving piece; 3. a wind-up roll; 4. tensioning the bracket; 5. a tension roller; 6. tensioning the slide block; 7. a left slide rail; 8. a middle slide rail; 9. a right slide rail; 10. a middle slide block; 11. a screw; 12. a telescopic rod; 13. a tray frame; 14. a column; 15. a bearing plate; 16. a load bearing spring; 17. a profile; 18. a profiled groove; 19. a stent body; 20. a conductive rod; 21. a signal lamp; 22. a battery body; 23. a conductive block; 24. A wire; 25. a directional column; 26. a film laminating roller; 27. a raw material roller; 28. a gap; 29. A drive motor; 30. a drive gear; 31. a change gear; 32. a driven gear.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

A preparation process of a high-precision controllable-plate type ultra-wide copper strip for a transformer is characterized by comprising the following steps of:

step 1: putting a copper block raw material into a copper dissolving tower to be dissolved to obtain copper liquid, and then pouring the copper liquid into a casting mold to cast into an ingot;

step 2: carrying out melting and drawing casting treatment on the copper block;

and step 3: putting the copper block into a stepping furnace for heating, and performing hot rolling and blank opening after heating to obtain a coarse material;

and 4, step 4: putting the coarse material into a rough rolling mill for rough rolling;

and 5: putting the rough material after rough rolling into a bell jar furnace for primary annealing, and then cleaning the rough material after annealing for the first time;

step 6: putting the coarse material into a finishing mill for primary finish rolling to obtain a refined material;

and 7: carrying out secondary annealing on the refined material, and then carrying out secondary cleaning on the refined material after the annealing is finished;

and 8: putting the refined material into a Simmark finishing mill for secondary finishing rolling to obtain a strip-shaped semi-finished product;

and step 9: annealing the semi-finished product for three times, and then cleaning the semi-finished product to obtain a copper strip finished product;

step 10: putting the copper strip into a film covering device, covering a protective film, cutting the copper strip, putting the copper strip into a covering device, and winding and packaging the copper strip to obtain a copper strip coil;

step 11: and (4) putting the copper strip coil into a fixed-weight detection device, detecting the weight of the copper strip coil, and rewinding if the weight does not reach the standard or exceeds the standard.

Wherein:

the annealing temperature of the primary annealing is 450-500 ℃, the temperature rise time is 4-5 h, and the heat preservation time is 7-8 h; the annealing temperature of the secondary annealing is 350-400 ℃, the temperature rising time is 4-5 h, and the heat preservation time is 4-6 h; the third annealing temperature is 250-300 ℃, the temperature rise time is 4-5 hours, and the heat preservation time is 4-6 hours.

The rolling force of rough rolling is 420N-450N, and the rolling speed is 700 m/min; the primary finish rolling force is 440N-460N, and the rolling speed is 750 m/min; the rolling force of the secondary finish rolling is 470N-480N, and the rolling speed is 700 m/min.

After the copper strip is processed, the copper strip can be put into the market after being rolled and packaged, and the copper strip is easily loosened due to long-distance transportation before rolling equipment, so that the rolling effect is influenced to a certain extent, and the copper strip is necessarily tightened with certain strength before rolling.

As shown in figure 1, the rewinding device comprises a winding support 1, a winding driving member 2 fixedly arranged on the winding support 1, a winding roller 3 rotationally arranged on the winding support 1 and providing rotational power through the winding driving member 2, a tensioning support 4, and three tensioning rollers 5 rotationally arranged on the tensioning support 4, wherein the rotating axes of the three tensioning rollers 5 are positioned on three points of an inverted isosceles triangle, the tensioning support 4 comprises a left support and a right support, three tensioning chutes are vertically arranged on the inner side surfaces of the left support and the right support, a tensioning slide block 6 is arranged in each tensioning chute, two ends of each tensioning roller 5 are respectively rotationally arranged on the tensioning slide block 6 respectively, a tensioning adjusting component for adjusting the high position of the tensioning slide block 6 is also arranged on the tensioning support 4, the tension adjusting component is used for synchronously adjusting the phase positions of the three tension rollers 5 to adjust the tension degree of the copper strip in the initial state.

In the use, the copper strips passes three tensioning rollers 5, then fixes again and coils on wind-up roll 3, and after the tensioning of these three tensioning rollers 5, the copper strips will be in a tight state, and subsequent winding process just also can not produce fluffy phenomenon again.

As shown in fig. 2, the tensioning adjusting component includes a left slide rail 7, a middle slide rail 8, and a right slide rail 9 vertically fixed on the tensioning bracket 4, tensioning sliders 6 are respectively slidably disposed on the left slide rail 7, the middle slide rail 8, and the right slide rail 9, a middle slide block 10 is further slidably disposed on the middle slide rail 8, a first screw hole is vertically disposed on the tensioning slider 6 on the middle slide rail 8, a second screw hole is vertically disposed on the middle slider 10, a screw rod 11 is further rotatably disposed on the tensioning bracket 4, the screw rod 11 is matched with the first screw hole of the tensioning slider 6 and the second screw hole of the middle slider 10, the tensioning slider 6 and the middle slider 10 on the middle slide rail 8 synchronously move in the same direction after the screw rod 11 rotates, telescopic links 12 are respectively rotatably connected to two sides of the middle slider 10, the other ends of the two telescopic links 12 are respectively rotatably connected to the tensioning sliders 6 on the left slide rail 7 and the right slide rail 9, the middle of the telescopic links 12 are rotatably connected to the tensioning bracket 4, the telescopic rod 12 comprises an inner rod and an outer rod which are arranged in a sliding manner, and the outer rod is rotatably connected with the tensioning bracket 4.

And the three tensioning rollers 5 can synchronously operate in the tensioning process, and after the screw 11 rotates, the tensioning slide block 6 and the middle slide block 10 on the middle slide rail 8 can move in the same direction. If the tensioning slide block 6 moves upwards, the middle slide block 10 also moves upwards, the telescopic rod 12 can turn around the rotating connection point of the telescopic rod and the tensioning support 4, the tensioning slide blocks 6 on the left side and the right side move downwards based on the lever principle after the middle slide block 10 moves downwards, namely, in the process, the middle tensioning roller 5 moves upwards, the tensioning rollers 5 on the two sides move downwards, the copper strip can be synchronously tensioned when passing through the three corners, and the tensioning effect is more comprehensive; after reversing the screw 11, the middle tension roller 5 moves down, and the tension rollers 5 on both sides move up, so that the copper strip is loosened.

In addition, after the copper strip is wound to form a copper strip coil, the copper strip coil needs to be weighed in a fixed weight mode, the quantity of the copper strip coil before being put into the market is enough, if the quantity of the copper strip coil is insufficient or exceeds a standard, secondary winding needs to be carried out, aiming at the fact that the current method for weighing the weight of the copper door strip is finished by adopting a large-scale electronic scale, reading needs to be observed manually in the detection process, or a controller is adopted for detection, the cost is high, and the invention particularly provides a fixed weight detection device:

as shown in fig. 3 and 4, the weight-fixing detecting device includes a weight-fixing support, a tray frame 13 fixedly disposed on the weight-fixing support, a vertical column 14 vertically fixed on the tray frame 13, a bearing plate 15 movably sleeved on the vertical column 14 through a central hole, a bearing spring 16 sleeved on the vertical column 14, and a weight-fixing detecting component, wherein the bearing plate 15 is provided with a shaped part 17, the shaped part 17 is provided with a groove 18 for placing a copper tape roll, two ends of the bearing spring 16 respectively abut against the bearing plate 15 and the tray frame 13, the weight-fixing detecting component includes a bracket body 19 fixedly disposed at the bottom of the bearing plate 15 and insulated, a conductive rod 20 fixedly disposed on the bracket body 19, a signal lamp 21 and a battery body 22 fixedly disposed on the weight-fixing support, two conductive blocks 23 fixedly disposed on the weight-fixing support and at two ends of the conductive rod 20, the two conductive blocks 23 are communicated with the signal lamp 21 and the battery body 22 through wires 24, the conducting blocks 23 have a certain height, four corners of the bearing plate 15, which are formed by the contact of the two conducting blocks 23 and the conducting blocks 23 after the bearing plate 15 descends, are also provided with directional holes, four directional columns 25 are also fixedly arranged on the weight-fixing support, the directional holes are slidably sleeved on the directional columns 25, and the conducting blocks 23 are vertically adjustable relative to the weight-fixing support.

In the using process, the copper strip coil is placed in the groove 18 of the shaped part 17, because the copper strip coil has weight, the bearing plate 15 will descend, the descending degree is determined by the bearing spring 16, at this time, the height positions of the two conductive blocks 23 are set, so that the conductive rod 20 is communicated with the conductive blocks 23 on the two sides after the copper strip coil with reasonable weight is placed on the bearing plate 15, at this time, the signal lamp 21 and the battery body 22 form a passage, the signal lamp 21 emits a signal to prove that the weight of the copper strip coil is reasonable, if the copper strip coil is too light or too heavy, the conductive rod 20 cannot descend to touch the two conductive blocks 23 or cross the two conductive blocks 23, the signal lamp 21 is not lighted or the signal lamp 21 is instantly extinguished after being lighted, and if the weight of the copper strip coil does not reach the standard, the copper strip coil needs to be wound again.

In addition, the surface of the product is very easy to have defects of scratch, contusion and the like in the production and transportation processes of the copper strip, so the film coating process of the step 11 needs to be carried out on the surface of the product, and therefore, the improvement and upgrading of the film coating function are necessary. The current modes of coating the film on the surface of the plate all need manual operation, the plate needs to be lifted to the ground from a line with the height of 1 meter, the plate is difficult and dangerous, two specially-assigned persons need to mount the lining paper, and the efficiency is extremely low.

As shown in fig. 5, the film covering device comprises a shell frame, film covering components which are symmetrically arranged on the shell frame up and down, and a driving component arranged on the shell frame; the film covering component comprises a film covering roller 26 and a raw material roller 27 which are rotatably arranged on the shell frame, a large amount of raw material films are wound on the raw material roller 27, and the raw material films are wound on the film covering roller 26 after being pulled out from the raw material roller 27; a gap 28 for passing the plate is arranged between the two film coating rollers 26; the driving part comprises a driving motor 29 fixedly arranged on the shell frame, a driving gear 30 fixedly arranged at the end part of an output shaft of the driving motor 29, a direction changing gear 31 rotatably arranged on the shell frame and a driven gear 32 fixedly arranged on the shaft of the laminating roller 26, the driving gear 30 and the direction changing gear 31 have the same parameters, the parameters of the two driven gears 32 are also the same, two ends of the driving gear 30 are respectively meshed with the direction changing gear 31 and one of the driven gears 32, and the direction changing gear 31 is meshed with the other driven gear 32.

In the use process: when the plate material passes through the gap 28 between the two laminating rollers 26 and the driving motor 29 is started, under the action of the driving gear 30, the driven gear 32 which is in direct contact with the driving gear 30 rotates reversely relative to the driving gear 30, so that the driven gear 32 carries the laminating roller 26 to rotate reversely, and the other driven gear 32 which is switched in the rotation direction with the driving gear 30 through the change gear 31 rotates normally relative to the driving gear 30, so that the driven gear 32 carries the other laminating roller 26 to rotate normally, one of the two laminating rollers 26 rotates normally and rotates reversely, and the two surfaces of the plate material passing through the gap 28 between the two laminating rollers are uniformly coated with the film.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended sense, i.e., in a sense equivalent to "including at least … …", and not in a closed sense, i.e., in a sense not to be interpreted as "including only … …".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.