Linear carrying system

Abstract

The utility model belongs to the technical field of battery piece production equipment, and particularly relates to a linear carrying system. The linear carrying system comprises a control module; the conveying line comprises a feeding conveying module, a jig and a discharging conveying module which are arranged in sequence; the linear motor is arranged above the conveying line; the movable plate is mounted on the linear motor; the two material taking modules are arranged at the two ends of the movable plate correspondingly; the distance measuring module is used for measuring the offset distance of the battery pieces on the feeding conveying module; the linear motor and the distance measuring module are electrically connected with the control module. The linear motor is adopted, so that direct transmission can be realized, various positioning errors caused by intermediate links are eliminated, and the positioning precision is high; the deviation distance of the battery pieces on the feeding conveying module is measured through the distance measuring module and then sent to the control module, the control module can control the linear motor to drive the discharging stroke of the moving plate according to the deviation distance so as to correct the positions of the battery pieces, and the precision of feeding to the jig is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery cell production equipment, and in particular relates to a linear transport system. Background Art

[0002] The laser shock peening technology for battery grid lines (Laser Shock Peening, referred to as "LSP") uses high-intensity laser pulses to impact the front of the solar cell to repair some defects and improve some mechanical properties of the metal electrode, thereby significantly reducing the contact resistivity between the semiconductor and the metal electrode.

[0003] In this process, the battery cells on the conveyor line are generally transported to the jig on the turntable through a linear transport device, and then the jig is sent to the laser strengthening position. The grid lines of the battery cells are scanned by the laser beam, and then the linear transport device is used for unloading and loading, and this cycle is repeated. This process requires very high accuracy in the transportation of battery cells. The existing technology generally uses a linear module to achieve linear transportation, but it uses a screw rod to achieve transmission, and the accuracy is not enough; and during the transportation process, the surface of the jig cannot be cleaned at the same time, and the waste residue generated during the processing will affect the position accuracy of the battery cells on the jig. Therefore, a linear transportation system with high transportation accuracy is required. Utility Model Content

[0004] The utility model aims to provide a linear transport system to solve the technical problem that the existing linear transport device has insufficient transport accuracy.

[0005] The present application provides a linear transport system, comprising: a control module; a conveyor line, which comprises a loading and conveying module, a fixture, and a unloading and conveying module arranged in sequence; a linear motor, which is arranged above the conveyor line; a moving plate, which is installed on the linear motor; two material-retrieving modules, which are respectively arranged at both ends of the moving plate; a distance-measuring module, which is used to measure the offset distance of the battery cell on the loading and conveying module; wherein the linear motor and the distance-measuring module are both electrically connected to the control module; and the distance-measuring module measures the offset distance of the battery cell on the loading and conveying module and sends it to the control module, and the control module controls the linear motor to drive the unloading stroke of the moving plate according to the offset distance.

[0006] In one embodiment of the present application, the material picking module includes: a suction cup installed on a movable plate; an air circuit for providing negative pressure to the suction cup; and a control valve electrically connected to the control module for controlling the on-off of the air circuit.

[0007] In one embodiment of the present application, the bottom surface of the suction cup is 0.5-2 mm away from the surface of the battery cell.

[0008] In one embodiment of the present application, the fixture is a negative pressure fixture.

[0009] In one embodiment of the present application, the loading and conveying module conveys the battery cells along the x-direction, and includes: a conveying belt on which a plurality of negative pressure holes are provided; a belt mounting plate on whose upper surface a negative pressure channel is provided, which is used to form a negative pressure cavity with the conveying belt to provide negative pressure to the negative pressure holes.

[0010] In one embodiment of the present application, the loading and conveying module further includes a correction mechanism, which is disposed below the belt mounting plate and is used to correct the deviation of the battery cell in the y direction.

[0011] In one embodiment of the present application, a cleaning mechanism is further provided on the movable plate between the two material taking modules for cleaning the surface of the jig.

[0012] In one embodiment of the present application, the cleaning mechanism includes: a lifting cylinder installed on a movable plate; and a brush installed at the lower end of the lifting cylinder.

[0013] The beneficial effects of the utility model are as follows: the linear transport system of the utility model adopts a linear motor, which can realize direct transmission, eliminate various positioning errors caused by intermediate links, and has high positioning accuracy; the offset distance of the battery sheet on the feeding and conveying module is measured by the distance measuring module and sent to the control module, and the control module can control the discharge stroke of the moving plate driven by the linear motor according to the offset distance to correct the position of the battery panel and improve the accuracy of feeding to the fixture.

[0014] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of a linear transport system of a preferred embodiment of the utility model;

[0018] Figure 2It is a principle block diagram of a linear transport system of a preferred embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a loading and conveying module of a preferred embodiment of the utility model;

[0020] Figure 4 It is a schematic assembly diagram of a loading and conveying module according to a preferred embodiment of the utility model.

[0021] In the figure:

[0022] Loading and conveying module 1, fixture 2, unloading and conveying module 3, linear motor 4, moving plate 5, material picking module 6, distance measuring module 7, suction cup 61, conveying belt 11, negative pressure hole 111, belt mounting plate 12, negative pressure channel 121, return mechanism 13, cleaning mechanism 8, lifting cylinder 81, brushing member 82. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0024] The present application provides a linear transport system, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0025] See also Figure 1 and Figure 2 In one embodiment, the linear transport system includes: a control module; a conveyor line, which includes a loading and conveying module 1, a fixture 2, and a unloading and conveying module 3 arranged in sequence; a linear motor 4, which is arranged above the conveyor line; a moving plate 5, which is installed on the linear motor 4; two picking modules 6, which are respectively arranged at both ends of the moving plate 5; a distance measuring module 7, which is used to measure the offset distance of the battery cell on the loading and conveying module 1; wherein the linear motor 4 and the distance measuring module 7 are electrically connected to the control module; and the distance measuring module 7 measures the offset distance of the battery cell on the loading and conveying module 1 and sends it to the control module, and the control module controls the linear motor 4 to drive the unloading stroke of the moving plate 5 according to the offset distance.

[0026] It can be understood that the discharge stroke of the moving plate 5 driven by the linear motor 4 is the distance that the material taking module 6 moves to the fixture 2 for discharge after grabbing the battery cell on the loading and conveying module 1 .

[0027] For example, in one application scenario, the linear motor 4 drives the movable plate 5 to move toward the upper material conveying module 1, and the two picking modules 6 correspond to the battery cells on the loading and conveying module 1 and the fixture 2 respectively, wherein the battery cells on the loading and conveying module 1 are unprocessed, and those on the fixture 2 have been processed; then after the two picking modules 6 respectively grasp, the linear motor 4 drives the movable plate 5 to move toward the lower material conveying module 3, and during the movement, the control module controls the linear motor 4 to drive the movable plate 5 to discharge the material according to the offset distance of the battery cells on the loading and conveying module 1 in the x-direction. For example, when the battery cells are biased to the front, the movable plate 5 moves one end less, and when they are biased to the back, it moves one end more, so that the battery cells to be processed grabbed by the picking module 6 can be accurately placed on the fixture 2, and at the same time, the processed battery cells grabbed by the other picking module 6 are placed on the unloading conveying module 3.

[0028] In this embodiment, the ranging module 7 can be but is not limited to CCD, laser ranging sensor, optical fiber sensor, etc.; it should be noted that the present application does not improve the control program of the control module, and those skilled in the art can fully implement it according to the existing control logic and program.

[0029] See also Figure 1 Optionally, the material taking module 6 includes: a suction cup 61 installed on the movable plate 5; an air circuit for providing negative pressure to the suction cup 61; and a control valve electrically connected to the control module for controlling the on-off of the air circuit.

[0030] Preferably, the bottom surface of the suction cup 61 is 0.5-2 mm away from the surface of the battery cell; and the fixture 2 is a negative pressure fixture.

[0031] For example, when the picking module 6 moves to above the loading and conveying module 1, the control module can control the air circuit to open, so that the suction cup 61 generates negative pressure, thereby sucking and grabbing the battery cell; when the picking module 6 moves to the fixture 2, the control module can control the air circuit to close, so that the suction cup 61 loses the negative pressure, so that the battery cell is transferred to the fixture 2 and is sucked and fixed by the fixture 2.

[0032] In some application scenarios, the loading and conveying module generally adopts belt conveyor, and the friction between the belt and the battery cell is used to transport the battery cell. This process is easily affected by the start-stop inertia, air flow disturbance, and equipment vibration, causing the battery cell position to shift.

[0033] See also Figure 3 and Figure 4Based on this, preferably, the loading and conveying module 1 conveys the battery cells along the x direction, and includes: a conveying belt 11, on which a plurality of negative pressure holes 111 are arranged; a belt mounting plate 12, on the upper surface of which a negative pressure channel 121 is arranged, which is used to form a negative pressure cavity with the conveying belt 11 to provide negative pressure to the negative pressure holes 111.

[0034] In this embodiment, the negative pressure channel 121 on the belt mounting plate 12 can be connected to a negative pressure source, and then negative pressure is formed on the surface of the negative pressure hole 111 on the belt 11, so that the battery cells can be adsorbed and fixed, thereby reducing the possibility of battery cell deviation during transportation.

[0035] For further information, see Figure 3 The loading and conveying module 1 also includes a correction mechanism 13, which is arranged below the belt mounting plate 12 and is used to correct the deviation of the battery cell in the y direction.

[0036] In this embodiment, when the battery cell is conveyed to the loading and conveying module 1, the correction mechanism 13 can clamp the battery cell in the y direction for deviation correction. Optionally, the correction mechanism 13 can be two correction arms driven by a motor to move toward each other to clamp the battery cell.

[0037] See also Figure 1 Preferably, a cleaning mechanism 8 is also provided on the movable plate 5 between the two material taking modules for cleaning the surface of the fixture 2 .

[0038] Specifically, the cleaning mechanism 8 includes: a lifting cylinder 81 installed on the movable plate 5; and a brush 82 installed at the lower end of the lifting cylinder 5; the brush 82 can be a brush.

[0039] In this embodiment, when the movable plate 5 moves back and forth, the brushing member 82 can clean the surface of the idle fixture 2 to prevent waste residue from affecting the battery cells; the lifting cylinder 5 can be a slide cylinder, and the height and stroke can be adjusted as needed.

[0040] In summary, the linear transport system of the utility model adopts a linear motor, which can realize direct transmission, eliminate various positioning errors caused by intermediate links, and has high positioning accuracy; the offset distance of the battery cell on the feeding and conveying module is measured by the distance measuring module and sent to the control module, and the control module can control the discharge stroke of the moving plate driven by the linear motor according to the offset distance to correct the position of the battery panel in the x direction and improve the accuracy of feeding to the fixture; negative pressure is formed on the surface of the negative pressure hole on the belt, so that the battery cell can be adsorbed and fixed, which can reduce the possibility of battery cell offset during transportation; by setting a correction mechanism, the deviation of the battery cell in the y direction can be corrected, further improving the accuracy of the placement of the battery cell on the fixture.

[0041] It should be noted that the various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0042] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A linear transport system, characterized in that: include: Control module; The conveyor line comprises a loading conveyor module (1), a fixture (2), and a unloading conveyor module (3) which are arranged in sequence; A linear motor (4) is arranged above the conveyor line; A movable plate (5) mounted on the linear motor (4); Two material taking modules (6) are respectively arranged at two ends of the movable plate (5); The distance measuring module (7) is used to measure the offset distance of the battery sheet on the loading and conveying module (1); wherein The linear motor (4) and the distance measuring module (7) are electrically connected to the control module; and The distance measuring module (7) measures the offset distance of the battery sheet on the loading and conveying module (1) and sends the measured value to the control module. The control module controls the linear motor (4) to drive the discharging stroke of the moving plate (5) according to the offset distance.

2. The linear transport system according to claim 1, characterized in that: The material taking module (6) comprises: A suction cup (61) mounted on the movable plate (5); An air circuit for providing negative pressure to the suction cup (61); and The control valve is electrically connected to the control module and is used to control the on and off of the gas circuit.

3. The linear transport system according to claim 2, characterized in that: The bottom surface of the suction cup (61) is 0.5-2 mm away from the surface of the battery cell.

4. The linear transport system according to claim 1, characterized in that: The jig (2) is a negative pressure jig.

5. The linear transport system according to claim 1, characterized in that: The loading and conveying module (1) conveys the battery cells along the x-direction, and comprises: A conveying belt (11) having a plurality of negative pressure holes (111) disposed thereon; The belt mounting plate (12) has a negative pressure channel (121) disposed on its upper surface, which is used to form a negative pressure cavity with the conveying belt (11) to provide negative pressure to the negative pressure hole (111).

6. The linear transport system according to claim 1, characterized in that: The loading and conveying module (1) further comprises a correction mechanism (13), which is arranged below the belt mounting plate (12) and is used to correct the deviation of the battery cell in the y direction.

7. The linear transport system according to claim 1, characterized in that: A cleaning mechanism (8) is also provided on the movable plate (5) between the two material taking modules, and is used to clean the surface of the jig (2).

8. The linear transport system according to claim 7, characterized in that: The cleaning mechanism (8) comprises: A lifting cylinder (81) mounted on the moving plate (5); and The brushing member (82) is mounted on the lower end of the lifting cylinder (81).

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