Broken belt anti-falling device and coating machine drying oven

Abstract

The utility model provides a pressing rod mechanism, a first driving piece, a second driving piece and a controller. And when the controller determines that the strip is broken, the first driving piece is controlled to act to clamp the strip, and the second driving piece is controlled to act to wind the strip. According to the utility model, the controller can control the first driving piece to drive the first pressing rod and the second pressing rod to clamp the broken strip and control the second driving piece to drive the first pressing rod and the second pressing rod to wind, so that the automatic processing of the broken strip is realized, the automation level of a production line is improved, the manual intervention and the operation time are reduced, and the production efficiency is improved. The production efficiency and the equipment utilization rate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pole piece manufacturing equipment, and more specifically to a belt breaking anti-falling device and a coating machine oven. Background Art

[0002] The existing high-speed coating machine for lithium batteries, especially the SDC double-sided simultaneous coating technology, has no rollers in the double-sided simultaneous coating equipment, and the pole pieces in the oven are in a fully suspended state. The operating tension of the equipment is more than 1.5 times higher than that of the general coating machine. The pole pieces are prone to abnormal belt breakage, and the undried pole piece slurry is very likely to adhere to the air nozzle after the belt breakage. Cleaning is difficult and the workload is large, which increases abnormal downtime and reduces production efficiency. After the pole piece breaks, the joint is pulled into the oven, making it difficult to connect the belts later.

[0003] Therefore, it is necessary to provide a broken belt anti-falling device and a coating machine oven to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the present invention provides a broken belt anti-falling device, comprising:

[0006] A pressure rod mechanism, the pressure rod mechanism comprising a first pressure rod and a second pressure rod extending in a first direction and spaced apart in a second direction, wherein the space between the first pressure rod and the second pressure rod is used for passing a strip;

[0007] a first driving member, the first driving member being connected to the pressure rod mechanism, and being adapted to drive the first pressure rod to approach the second pressure rod after the strip is broken, so as to press the strip;

[0008] a second driving member, the second driving member being connected to the pressure rod mechanism, and being adapted to drive the pressure rod mechanism and the first driving member to rotate around an axis parallel to the first direction after the strip breaks, so as to wind up the strip;

[0009] The detection device, the first driving member, and the second driving member are electrically connected to the controller respectively; wherein,

[0010] The controller is configured to control the first driving member to clamp the strip, and control the second driving member to wind the strip when determining that the strip is broken.

[0011] According to the broken belt anti-falling device of the first aspect of the utility model, the controller judges and automatically controls the first driving member to drive the first pressure rod and the second pressure rod to clamp the broken belt according to the detection signal, and controls the second driving member to drive the first pressure rod and the second pressure rod to wind, thereby realizing automatic processing of the broken belt situation, improving the automation level of the production line, reducing manual intervention and operation time, and improving production efficiency and equipment utilization.

[0012] Optionally, the first driving member is a hydraulic cylinder, a pneumatic cylinder or an electric push rod;

[0013] The first driving member includes a first movable end and a second movable end, the first movable end is connected to the first pressure rod, and the second movable end is connected to the second pressure rod, so as to drive the first pressure rod and the second pressure rod to move closer to or away from each other.

[0014] Optionally, the two first driving members are arranged at two ends of the pressure rod mechanism.

[0015] Optionally, the second driving member is a motor, the motor is located at one side of the pressure rod mechanism, and a motor shaft of the motor is connected to the pressure rod mechanism or the first driving member.

[0016] Optionally, it further comprises a connecting block, wherein the connecting block is fixedly connected to the first driving member;

[0017] The connection is arranged between the first driving member and the second driving member; and / or

[0018] The connecting block is connected between the first driving member and the detection device.

[0019] Optionally, a first tension sensor is further included, wherein the first tension sensor is electrically connected to the controller, and the first tension sensor is used to detect the tension of the strip when it is clamped by the pressure rod mechanism.

[0020] Optionally, it further comprises an end pressure rod assembly, wherein the end pressure rod assembly is spaced apart from the pressure rod mechanism along the conveying direction of the strip;

[0021] The end pressure rod assembly comprises a third pressure rod and a fourth pressure rod extending in the first direction and spaced apart in the second direction, and a third driving member adapted to drive the third pressure rod and the fourth pressure rod to move closer to or farther away from each other;

[0022] The third driving member is electrically connected or signal-connected to the controller. When the controller determines that the strip is broken, the controller controls the third driving member to move so as to clamp the strip.

[0023] Optionally, along the conveying direction of the strip, at least two of the end pressure rod assemblies are arranged on both sides of the pressure rod mechanism.

[0024] Optionally, a second tension sensor is further included, the second tension sensor is electrically connected to the controller, and the second tension sensor is used to detect the tension of the strip;

[0025] The controller is configured to determine whether the tape is broken according to the detection signal of the second tension sensor.

[0026] The second aspect of the utility model provides a coating machine oven, comprising a box body and the above-mentioned broken belt anti-falling device, wherein the broken belt anti-falling device is arranged in the middle of the coating machine oven, and the strip material is a pole piece.

[0027] According to the coating machine oven of the second aspect of the utility model, the abnormality of broken belt can be effectively detected and processed during the electrode coating process, thereby reducing abnormal downtime and improving production efficiency.

[0028] Optionally, it also includes:

[0029] A traction mechanism, the traction mechanism is suitable for providing a constant traction force so that the strip is conveyed under a constant tension state, the traction mechanism is arranged downstream of the coating machine oven;

[0030] A second tension sensor, the second tension sensor is electrically connected to the controller, the second tension sensor is used to detect the tension of the strip, and the second tension sensor is arranged between the traction mechanism and the coating machine oven;

[0031] The controller is configured to determine whether the tape is broken according to the detection signal of the second tension sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0033] Figure 1 It is a three-dimensional schematic diagram of a coating machine oven according to a preferred embodiment of the utility model;

[0034] Figure 2 for Figure 1 An enlarged schematic diagram of part A in FIG.

[0035] Figure 3 for Figure 1 An enlarged schematic diagram of part B in FIG.

[0036] Figure 4 It is a top view schematic diagram of the coating machine oven;

[0037] Figure 5 is a schematic side view of a coating machine oven;

[0038] Figure 6 for Figure 5 An enlarged schematic diagram of part C in FIG.

[0039] Figure 7 for Figure 5 An enlarged schematic diagram of part D in FIG.

[0040] Figure 8 Schematic diagram of coating machine oven control system.

[0041] Description of Reference Numerals

[0042] 10: Pressure rod mechanism

[0043] 11: First pressure bar

[0044] 12: Second pressure bar

[0045] 20: First tension sensor

[0046] 30: First driving member

[0047] 31: First activity terminal

[0048] 32: Second active terminal

[0049] 40: Second driving member

[0050] 50: Strip / Pole

[0051] 60: Connection block

[0052] 70: End pressure rod assembly

[0053] 71: Third pressure bar

[0054] 72: Fourth pressure bar

[0055] 73: Third drive member

[0056] 80: Controller

[0057] 90: Traction mechanism

[0058] 91: Second tension sensor DETAILED DESCRIPTION

[0059] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0060] In this document, ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0061] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0062] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0063] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0064] Now, exemplary embodiments according to the present utility model will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0065] The existing lithium battery high-speed coating machine, especially the SDC double-sided simultaneous coating technology, has no rollers in the double-sided simultaneous coating equipment, and the pole piece 50 in the oven is in a fully suspended state. The equipment operation tension is more than 1.5 times greater than that of the general coating machine, and the pole piece 50 is prone to abnormal belt breakage, and the undried pole piece 50 slurry is very likely to adhere to the air nozzle after the belt breakage. Cleaning is difficult and the workload is large, which increases abnormal downtime and reduces production efficiency.

[0066] The utility model provides a coating machine oven. By detecting the broken tape of the pole piece 50 and winding the broken pole piece 50, the slurry of the undried pole piece 50 after the tape is broken is prevented from being attached to the air nozzle. The utility model will be described in detail in combination with the drawings and specific embodiments.

[0067] like Figure 1-7As shown, the utility model provides a broken belt anti-falling device, including a pressure rod mechanism 10, a first driving member 30, a second driving member 40, and a controller 80.

[0068] In the present invention, the pressure rod mechanism 10 includes a first pressure rod 11 and a second pressure rod 12 extending in the first direction and spaced apart in the second direction, and the space between the first pressure rod 11 and the second pressure rod 12 is used to pass the strip 50. In the normal coating state of the pole piece 50, the first pressure rod 11 and the second pressure rod 12 do not contact the pole piece 50 to prevent the slurry of the undried pole piece 50 from adhering to the first pressure rod 11 and the second pressure rod 12, and also avoid damage to the pole piece 50.

[0069] The first pressing rod 11 and the second pressing rod 12 are metal rollers with a diameter of 10-30 mm.

[0070] In the utility model, the first driving member 30 is connected to the pressure rod mechanism 10. The first driving member 30 is used to move the first pressure rod 11 and the second pressure rod 12 closer to or farther from each other. After the strip 50 breaks, the first driving member 30 is suitable for driving the first pressure rod 11 to approach the second pressure rod 12, thereby pressing the strip 50, so as to tighten the broken strip 50 in time, which can reduce the generation of waste caused by the broken strip and reduce the production cost. The automatic adjustment and tightening function can reduce manual intervention and operation time, and improve the efficiency and automation level of the production line.

[0071] In some embodiments of the utility model, the first driving member 30 is a hydraulic cylinder, a gas cylinder or an electric push rod. The first driving member 30 includes a first movable end 31 and a second movable end 32, the first movable end 31 is connected to the first pressure rod 11, and the second movable end 32 is connected to the second pressure rod 12, so as to drive the first pressure rod 11 and the second pressure rod 12 to move closer to or away from each other. Exemplarily, the first driving member 30 adopts a gas cylinder, the cylinder body of the gas cylinder is connected to the first pressure rod 11, and the piston rod of the gas cylinder is connected to the second pressure rod 12. The connection between the gas cylinder and the pressure rod mechanism 10 is realized by a connecting member such as a pin shaft or a bolt, ensuring that the connecting member has sufficient strength and rigidity to transmit the force generated by the gas cylinder.

[0072] In some embodiments of the present invention, two first driving members 30 are disposed at two ends of the pressure rod mechanism 10. The two first driving members 30 act synchronously to ensure that the pressure and moving speed at both ends of the pressure rod mechanism 10 remain balanced, and ensure that the belt 50 can be properly tightened and fixed after the belt breaks.

[0073] In the utility model, the second driving member 40 is connected to the pressure rod mechanism 10. After the strip 50 breaks, the second driving member 40 is suitable for driving the pressure rod mechanism 10 and the first driving member 30 to rotate around an axis parallel to the first direction, so as to wind up the strip 50. After the strip 50 breaks, the pressure rod mechanism 10 and the strip 50 sandwiched between the pressure rod mechanisms 10 are quickly wound up by the setting of the second driving member 40, so as to avoid the slurry of the undried pole piece 50 from adhering to the air nozzle after the strip breaks. Among them, the second driving member 40 drives the pressure rod mechanism 10 to rotate around an axis parallel to the first direction, that is, to rotate around an axis in the width direction of the pole piece 50, so as to quickly reduce the length of the pole piece 50.

[0074] In some embodiments of the present invention, the second driving member 40 is a motor, which is located on one side of the pressure rod mechanism 10, and the motor shaft of the motor is connected to the pressure rod mechanism 10 or the first driving member 30. As can be seen from the above, the two ends of the first driving member 30 are respectively connected to the ends of the first pressure rod 11 and the second pressure rod 12, that is, the first driving member 30 connects the first pressure rod 11 and the second pressure rod 12, so that the three form a whole, therefore, the second driving member 40 is connected to any one of the three, and can drive the whole component to move.

[0075] On the basis of the above embodiment, a connecting block 60 is further included. The connecting block 60 is fixedly connected to the first driving member 30. As can be seen from the foregoing, two first driving members 30 are provided. Optionally, two connecting blocks 60 are provided. Exemplarily, the connecting block 60 is connected to the cylinder body of the cylinder.

[0076] In some embodiments, the connecting block 60 is connected between the first driving member 30 and the second driving member 40. As mentioned above, the second driving member 40 is a motor, and the connecting block 60 is keyed to the motor shaft of the motor. The body of the motor is fixed to the external structure.

[0077] In some embodiments, the connection block 60 is connected between the first driving member 30 and the external structure, and optionally, the connection block 60 and the external structure are rotationally connected. Exemplarily, the connection block 60 is connected to the external mechanism through a connecting rod and a bearing.

[0078] In some embodiments of the present invention, the external structure is a wall of a coating machine oven.

[0079] In some embodiments of the present invention, an end pressure bar assembly 70 is further included, and the end pressure bar assembly 70 is spaced apart from the pressure bar mechanism 10 along the conveying direction of the strip 50. Exemplarily, the end pressure bar assembly 70 is disposed on both sides of the pressure bar mechanism 10, and the distance between the end pressure bar assembly 70 and the pressure bar mechanism 10 is 5m.

[0080] The end pressure bar assembly 70 includes a third pressure bar 71 and a fourth pressure bar 72 extending in the first direction and spaced apart in the second direction, and a third driving member 73 adapted to drive the third pressure bar 71 and the fourth pressure bar 72 to move closer or further away. The third driving member 73 is similar to the aforementioned first driving member 30. After the strip 50 is broken, the third driving member 73 is adapted to drive the third pressure bar 71 to move closer to the fourth pressure bar 72, thereby pressing the strip 50, so as to tighten the broken strip 50 in time.

[0081] The third pressing rod 71 and the fourth pressing rod 72 are square solid metal rods. Optionally, the metal rods are made of aluminum alloy, stainless steel, etc.

[0082] In the utility model, a plurality of groups of belt-breaking anti-falling devices are arranged in the coating machine oven, and the plurality of groups of belt-breaking anti-falling devices are arranged at intervals along the conveying direction of the belt 50 .

[0083] In the present invention, a first tension sensor 20 is also included, and the first tension sensor 20 is electrically connected to the controller 80. The first tension sensor 20 is used to detect the tension of the strip 50 when it is clamped by the pressure rod mechanism 10. As can be seen from the above, the first driving member 30 can drive the first pressure rod 11 and the second pressure rod 12 to move so as to clamp the strip 50; the second driving member 40 can drive the first pressure rod 11 and the second pressure rod 12 to rotate so as to wind the strip 50; that is, the winding of the strip 50 is carried out in the clamped state. Through the setting of the first tension sensor 20, the real-time tension of the strip 50 can be detected when the broken belt anti-falling device is in motion, including when the first driving member 30 and the second driving member 40 are in motion.

[0084] The first tension sensor 20 can monitor the tension change of the strip 50 in real time and promptly detect abnormal tension of the strip 50. The first tension sensor 20 has a fast detection speed, which improves the automation level and operational convenience of the production line.

[0085] Optionally, the first tension sensor 20 is located on the opposite side of the second driving member 40. Thus, the second driving member 40 and the first tension sensor 20 can be fixed on two walls of the coater oven along the width direction, so that the pressure rod mechanism 10 can move relative to the coater oven.

[0086] In the present invention, the first tension sensor 20 is used to detect the tension of the strip 50 when it is clamped by the pressure rod mechanism 10, so as to detect the tension of the strip 50 when the second driving member 40 is wound, and avoid excessive tension of the strip 50.

[0087] In the present invention, a traction mechanism 90 is further included. The traction mechanism 90 is adapted to provide a constant traction force so that the pole piece 50 is transported under a constant tension state. The traction mechanism 90 is disposed downstream of the coating machine oven. A second tension sensor 91 is disposed between the traction mechanism 90 and the coating machine oven, and the second tension sensor 91 is electrically connected to the controller 80. The second tension sensor 91 is adapted to detect the real-time tension of the strip 50 to confirm the transmission state of the strip 50, thereby ensuring the normal transmission of the strip 50.

[0088] like Figure 8 As shown, the first tension sensor 20, the second tension sensor 91, the first drive member 30, the second drive member 40, the third drive member 73, and the traction mechanism 90 are electrically connected to the controller 80 respectively; wherein the controller 80 is configured to determine whether the strip 50 is broken according to the detection signal of the second tension sensor 91, and when it is determined that the strip 50 is broken, control the first drive member 30 and the third drive member to move to clamp the strip 50, and control the second drive member 40 to move to wind the strip 50, and the first tension sensor 20 detects the tension of the strip 50 when it is wound. The controller 80 determines and automatically controls the first drive member 30 and the third drive member to clamp the broken strip 50 according to the detection signal, and controls the second drive member 40 to wind, thereby realizing the automatic processing of the broken strip, improving the automation level of the production line, reducing manual intervention and operation time, and improving production efficiency and equipment utilization.

[0089] In the present invention, the broken belt anti-falling device is arranged in the middle of the coating machine oven along the conveying direction of the belt 50. The broken belt anti-falling device is located in the middle, which can clamp and wind the broken belt 50 with a greater probability, ensuring timely processing of the broken belt 50.

[0090] The following describes the working process of the broken belt anti-falling device of the utility model:

[0091] The traction mechanism 90 pulls the pole piece 50 to be transmitted in a state of constant tension, and the second tension sensor 91 detects the tension of the pole piece 50 in real time. When the pole piece 50 breaks, the second tension sensor 91 detects that the tension of the pole piece 50 exceeds the threshold range, and the second tension sensor 91 transmits the signal to the controller 80. The controller 80 controls the first drive member 30, the second drive member 40, and the third drive member to act. The third drive members at both ends clamp the pole piece 50, the first drive member 30 clamps the middle of the pole piece 50, and the second drive member 40 quickly winds the pole piece 50. The first tension sensor 20 detects the tension of the pole piece 50 during winding. The first tension sensor 20 detects that the tension of the pole piece 50 is abnormal (higher than the highest threshold), and the first tension sensor 20 transmits data to the controller 80, and the controller 80 controls the second drive member 40 to stop.

[0092] The broken belt anti-falling device can detect the broken belt in time. After the belt breaks, the pressure rod clamps the pole piece 50 in time, and the loosened pole piece 50 is re-tightened by rotating the pressure rod to prevent the pole piece 50 from contacting the nozzle, reducing the risk of nozzle sticking, greatly shortening the time for cleaning waste, and improving the efficiency of abnormal processing. When the belt breaks before and after the oven of the coating machine, the pressure rod clamps the pole piece 50 in time to prevent the difficulty of connecting the belt caused by the broken belt joint of the pole piece 50 being pulled into the oven.

[0093] By using the coating machine oven with a broken belt anti-falling device provided by the utility model, the breakage can be discovered more quickly without affecting the coating of the pole piece 50, and measures can be taken in time to deal with it, thereby reducing the impact on the air nozzle within a certain range.

[0094] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0095] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A belt breaking anti-falling device, characterized in that: include: A pressure rod mechanism, the pressure rod mechanism comprising a first pressure rod and a second pressure rod extending in a first direction and spaced apart in a second direction, wherein the space between the first pressure rod and the second pressure rod is used for passing a strip; a first driving member, the first driving member being connected to the pressure rod mechanism, and being adapted to drive the first pressure rod to approach the second pressure rod after the strip is broken, so as to press the strip; a second driving member, the second driving member being connected to the pressure rod mechanism, and being adapted to drive the pressure rod mechanism and the first driving member to rotate around an axis parallel to the first direction after the strip breaks, so as to wind up the strip; A controller, wherein the first driving member and the second driving member are electrically connected to the controller respectively; wherein, The controller is configured to control the first driving member to clamp the strip, and control the second driving member to wind the strip when it is determined that the strip is broken.

2. The broken belt anti-falling device according to claim 1, characterized in that: The first driving member is a hydraulic cylinder, a pneumatic cylinder or an electric push rod; The first driving member includes a first movable end and a second movable end, the first movable end is connected to the first pressure rod, and the second movable end is connected to the second pressure rod, so as to drive the first pressure rod and the second pressure rod to move closer to or away from each other.

3. The broken belt anti-falling device according to claim 2, characterized in that: The two first driving members are arranged at two ends of the pressure rod mechanism.

4. The broken belt anti-falling device according to any one of claims 1 to 3, characterized in that: The second driving member is a motor, which is located at one side of the pressure rod mechanism, and a motor shaft of the motor is connected to the pressure rod mechanism or the first driving member.

5. The broken belt anti-falling device according to claim 1, characterized in that: Also included is a connecting block, the connecting block being fixedly connected to the first driving member; The connecting block is arranged between the first driving member and the second driving member.

6. The broken belt anti-falling device according to claim 1, characterized in that: The device further comprises a first tension sensor, which is electrically connected to the controller and is used to detect the tension of the strip when the strip is clamped by the pressure bar mechanism.

7. The broken belt anti-falling device according to claim 1, characterized in that: Also included is an end pressure bar assembly, wherein the end pressure bar assembly is spaced apart from the pressure bar mechanism along the conveying direction of the strip; The end pressure rod assembly comprises a third pressure rod and a fourth pressure rod extending in the first direction and spaced apart in the second direction, and a third driving member adapted to drive the third pressure rod and the fourth pressure rod to move closer to or farther away from each other; The third driving member is electrically connected or signal-connected to the controller. When the controller determines that the strip is broken, the controller controls the third driving member to move so as to clamp the strip.

8. The broken belt anti-falling device according to claim 7, characterized in that: Along the conveying direction of the strip, at least two end pressure rod assemblies are arranged on both sides of the pressure rod mechanism.

9. The broken belt anti-falling device according to claim 1, characterized in that: Also includes a second tension sensor, the second tension sensor is electrically connected to the controller, and the second tension sensor is used to detect the tension of the strip; The controller is configured to determine whether the tape is broken according to the detection signal of the second tension sensor.

10. A coating machine oven, characterized in that: It comprises a box body and a broken belt anti-falling device according to any one of claims 1 to 9, wherein the broken belt anti-falling device is arranged in the middle of the coating machine oven, and the belt material is a pole piece.

11. The coating machine oven according to claim 10, characterized in that: Also includes: A traction mechanism, the traction mechanism is suitable for providing a constant traction force so that the strip is conveyed under a constant tension state, the traction mechanism is arranged downstream of the coating machine oven; A second tension sensor, the second tension sensor is electrically connected to the controller, the second tension sensor is used to detect the tension of the strip, and the second tension sensor is arranged between the traction mechanism and the coating machine oven; The controller is configured to determine whether the tape is broken according to the detection signal of the second tension sensor.

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