Unwinding device and forming machine

Abstract

The utility model provides an unwinding device and a forming machine, and the unwinding device comprises a rack; the material roll fixing assembly is used for placing a material roll, and the material roll fixing assembly is rotatably connected with the rack; the cloth liner coiling device is used for coiling the cloth liner and is rotatably connected with the rack; the driving assembly is selectively in driving fit with one of the material roll fixing assembly and the cloth liner winding device, the driving assembly has a first driving state and a second driving state, and when the driving assembly is in the first driving state, the driving assembly is in driving butt joint with the cloth liner winding device and drives the cloth liner winding device to drive the material roll to be unwound and conveyed; when the driving assembly is in the second driving state, the driving assembly is in butt joint with the material roll fixing assembly and drives the material roll fixing assembly to drive the material roll and the cloth liner to rotate reversely, so that the cloth liner is recycled to the material roll. The unwinding device solves the problem that an unwinding device in the prior art cannot automatically roll back.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire technical field, specifically, relate to a guide open device and forming machine. BACKGROUND

[0002] With the diversification of production process, the application of off-line type glue is more and more, off-line type glue is through the cooling of the extruded rubber sheet and is wound into rubber sheet roll, and the padding cloth generally adopts polypropylene padding cloth, when the type glue roll changes the specification after using part of the rubber sheet, the polypropylene padding cloth is recycled, and cannot be cut, but the current guide open device cannot meet the stripping demand of the padding cloth of off-line type glue, and has no automatic rewinding function, and manual rewinding is time-consuming and laborious. CONTENT OF UTILITY MODEL

[0003] The utility model mainly aims at providing a guide open device and forming machine to solve the problem that the guide open device in the prior art cannot be automatically rewound.

[0004] In order to realize the above-mentioned purpose, according to one aspect of the utility model, a guide open device is provided, which comprises: a rack; a material roll fixing assembly for placing a material roll, the material roll fixing assembly being rotatably connected with the rack; a padding cloth winding device for winding the padding cloth, the padding cloth winding device being rotatably connected with the rack; a driving assembly, the driving assembly being selectively drivenly matched with one of the material roll fixing assembly and the padding cloth winding device, the driving assembly having a first driving state and a second driving state, when the driving assembly is in the first driving state, the driving assembly is drivenly connected with the padding cloth winding device, and drives the padding cloth winding device to drive the material roll to be guided and conveyed; when the driving assembly is in the second driving state, the driving assembly is connected with the material roll fixing assembly, and drives the material roll fixing assembly to drive the material roll and the padding cloth to rotate reversely, so that the padding cloth is recycled to the material roll.

[0005] Further, the driving assembly comprises: a driving motor; a power switching device, the power switching device having an input part, a first output part and a second output part, and the first output part and the second output part are both detachably matched with the input part, the input part is drivingly connected with the driving motor, the first output part is drivingly connected with the padding cloth winding device, and the second output part is drivingly connected with the material roll fixing assembly, when the driving assembly is in the first driving state, the input part is detachably matched with the first output part, and when the driving assembly is in the second driving state, the input part is detachably matched with the second output part.

[0006] Further, the power switching device comprises a clutch, the clutch is movably arranged between the first output part and the second output part, the clutch is drivingly connected with the input part, and when the clutch moves, the detachable relationship between the first output part and the second output part is switched, so that one of the first output part and the second output part is detachably matched with the input part through the clutch.

[0007] Further, the clutch member is a clutch gear, the first output part and the second output part each have a mating gear, and the clutch gear is movably arranged between the mating gears of the first output part and the second output part.

[0008] Further, the rack has opposite first and second sides, the material roll fixing assembly and the blanket winding device are arranged through the first and second sides, and the installation positions of the material roll fixing assembly and the blanket winding device are located on the first side, and the driving assembly is located on the second side.

[0009] Further, the driving assembly, the material roll fixing assembly and the blanket winding device are each a plurality of sets, and are arranged in pairs on the surface of the rack.

[0010] Further, the guide opening device further comprises: a traction assembly, the traction assembly is arranged on the downstream side of the material roll fixing assembly, the separated rubber material is conveyed to the traction assembly and is conveyed by the traction assembly; and a floating roller assembly, the floating roller assembly is located on the downstream side of the traction assembly, and the rubber material is continuously conveyed after being conveyed to the floating roller assembly by the traction assembly.

[0011] Further, the traction assembly and the floating roller assembly are a plurality of sets and are arranged alternately in sequence along the conveying direction of the rubber material.

[0012] Further, the guide opening device further comprises a tail end detection assembly, the tail end detection assembly is located on the conveying path of the rubber material and detects the rubber material.

[0013] According to another aspect of the present application, a forming machine is provided, comprising the above guide opening device.

[0014] The utility model discloses a technical scheme, through setting up material roll fixed component, cloth roll device and drive assembly on the frame to realize the automatic back roll function of material roll. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings constituting a part of the specification of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0016] Figure 1 The structure schematic diagram of the first side of the guide opening device of the utility model is shown.

[0017] Figure 2 The structure schematic diagram of the second side of the guide opening device of the utility model is shown.

[0018] Figure 3 The structure schematic diagram of the second side shaft of the guide opening device of the utility model is shown.

[0019] Figure 4 The structure schematic diagram of the second side shaft of the guide opening device of the utility model is shown. Figure 1 The guide opening route map (the solid line part in the drawing) of the guide opening device glue material and the cloth recovery route map (the dotted line part in the drawing) are shown.

[0020] Among them, the above-mentioned drawing includes the following sign:

[0021] 10, rack; 11, first side; 12, second side; 20, roll fixing assembly; 30, cloth winding device; 40, driving motor; 50, power switching device; 60, traction assembly; 70, floating roller assembly; 80, tail detection assembly. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0024] In the present application, unless otherwise stated, the orientation words such as "up, down, top, bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0025] In order to solve the problem that the guide opening device in the prior art cannot automatically rewind, the present application provides a guide opening device and a forming machine.

[0026] As shown in Figures 1 to 4 A guide opening device in the present embodiment comprises a rack 10, a roll fixing assembly 20 for placing a roll, a cloth winding device 30 for winding cloth, and a driving assembly. The roll fixing assembly 20 is rotatably connected with the rack 10; the cloth winding device 30 is rotatably connected with the rack 10; the driving assembly is selectively driven with one of the roll fixing assembly 20 and the cloth winding device 30, the driving assembly has a first driving state and a second driving state, when the driving assembly is in the first driving state, the driving assembly is drivingly connected with the cloth winding device 30, and drives the cloth winding device 30 to drive the roll to be guided and conveyed; when the driving assembly is in the second driving state, the driving assembly is connected with the roll fixing assembly 20, and drives the roll fixing assembly 20 to drive the roll and the cloth to rotate reversely, so as to recycle the cloth to the roll.

[0027] The embodiment realizes the automatic rewinding function of the film roll by setting the roll fixing assembly 20, the blanket winding device 30 and the driving assembly on the rack 10. Specifically, the rack 10 is the basic structure of the whole unwinding device, used for supporting and integrating all components, the roll fixing assembly 20 is used for fixing the film roll of offline type glue, ensuring its stability during unwinding, the roll fixing assembly 20 is rotatably connected with the rack 10, so that the film roll can rotate freely during unwinding and rewinding. Similarly, the blanket winding device 30 is also rotatably connected with the rack 10, and the blanket winding device 30 is a key component for winding and peeling the blanket during film unwinding, to ensure the smoothness and efficiency of the blanket during winding. The driving assembly is the core of the unwinding device, which can selectively drive the roll fixing assembly 20 and the blanket winding device 30, realizing two different driving states. In the first driving state mode, the driving assembly is driven to the blanket winding device 30, drives the blanket winding device 30 to rotate, thereby driving the film roll to unwind and convey the film; when the production line needs to replace the film specifications, the driving assembly is switched to the state of being connected with the roll fixing assembly 20, i.e. the second driving state, drives the roll fixing assembly 20 to rotate, so that the film and the blanket rotate reversely, so that the originally peeled blanket can be automatically recycled into the film roll, and then the whole roll can be taken down for replacement, without the need of cutting the blanket and other operations. On the one hand, the automatic rewinding of the blanket is realized, the production interruption time is reduced, the flexibility and efficiency of the production line are improved, the operation process is simplified, and the production cost is reduced; on the other hand, the time-consuming and laborious manual rewinding is avoided, the production efficiency and material utilization rate are improved.

[0028] As Figures 1 to 3As shown, in the present embodiment, the driving assembly comprises a driving motor 40 and a power switching device 50. Specifically, the driving motor 40 is the power source of the driving assembly, which provides the necessary power for the entire unwinding device to complete the unwinding of the film and the winding or rewinding of the backing cloth. The power switching device 50 is the key part of the driving assembly, which is designed with an input part, a first output part and a second output part. The input part is directly or indirectly connected with the driving motor 40 for receiving the power output by the driving motor 40. The first output part and the second output part are respectively connected with the backing cloth winding device 30 and the roll fixing assembly 20 for transmitting power to these two assemblies. In the first driving state, the first output part of the power switching device 50 is in butt joint with the backing cloth winding device 30, and the power of the driving motor 40 is transmitted to the backing cloth winding device 30, so that the backing cloth winding device 30 can rotate and wind the backing cloth on the film, and at the same time, the film is forwarded. In the second driving state, the second output part of the power switching device 50 is in butt joint with the roll fixing assembly 20, and the power of the driving motor 40 is transmitted to the roll fixing assembly 20, so that the film roll and the backing cloth are reversely rotated to realize the automatic recycling of the backing cloth. Through the design of the power switching device 50, the unwinding device not only can efficiently unwind the film and wind the backing cloth, but also can quickly switch to the automatic rewinding mode when needed, ensuring the continuity of the production line and the effective recycling of materials.

[0029] Optionally, the driving motor 40 can adopt a variable-speed motor, such as a variable-frequency motor, to ensure that the speed can adapt to the needs of film unwinding and rewinding in different working modes, while ensuring the stability and accuracy of operation. The input part is connected with the output shaft of the driving motor 40 through a key groove, a shaft coupling or other appropriate mechanical connection methods, as long as the stability and efficiency of power transmission are ensured.

[0030] In the present embodiment, the power switching device 50 comprises a clutch, which is designed to be movably arranged between the first output part and the second output part, so that the power distribution and transmission can be realized by switching between the two parts according to the operation needs. The clutch is in driving connection with the input part, and the power butt joint relationship between the clutch and the first output part or the second output part is controlled through the movement of the clutch itself. In this way, when the clutch is in butt joint with the first output part, the output torque of the driving motor 40 is transmitted to the backing cloth winding device 30 through the clutch, thereby realizing the unwinding of the film and the winding of the backing cloth. When the clutch is in butt joint with the second output part, the power of the driving motor 40 directly acts on the roll fixing assembly 20 to drive it to rotate, so as to rewind the backing cloth that has been stripped back into the film roll, thereby completing the automatic rewinding of the backing cloth. Through the built-in clutch of the power switching device 50, the adjustment of the power transmission path is realized, and it is ensured that the output of the driving motor 40 can be selectively transmitted to the backing cloth winding device 30 or the roll fixing assembly 20 according to the change of the operation mode.

[0031] In the embodiment, the clutching member is a clutching gear, the first output part and the second output part each have a mating gear, and the clutching gear is movable between the first output part and the second output part, so as to realize engagement or disengagement with the mating gear of any output part. The working process is as follows: when the film is guided, the driving motor 40 transmits power to the clutching gear through the input part, the clutching gear moves to a position engaged with the mating gear of the first output part, at this time, the rotation of the driving motor 40 transmits power to the backing cloth winding device 30 through the cooperation of the clutching gear and the mating gear, and drives the backing cloth winding device 30 to perform the film guiding and backing cloth winding work. When it is necessary to perform the backing cloth unwinding, the power of the driving motor 40 is also transmitted to the clutching gear through the input part, but at this time, the clutching gear moves to a position engaged with the mating gear of the second output part, the material roll fixing assembly 20 becomes the receiving end of the power, and the power directly drives the film roll and the backing cloth to rotate reversely through the engagement between the clutching gear and the mating gear of the material roll fixing assembly 20, so as to realize the automatic unwinding of the backing cloth. Through the cooperation design of the clutching gear and the mating gear, the power switching device 50 can not only efficiently switch between the film guiding and the backing cloth unwinding, but also can meet the requirements of the production line on speed and precision, and improve the production efficiency. Of course, the specific structure of the clutching member and the cooperation form between the clutching member and the two output parts can be adjusted according to the needs, and other forms of clutching mechanism can also be used to realize the clutching cooperation.

[0032] Optionally, the clutching gear is usually made of high-strength metal material, so as to ensure that it has good stability under high-speed rotation and frequent switching working conditions, and the mating gear is designed to match the clutching gear, so as to ensure the stability and precision in the power transmission process.

[0033] For example, Figure 1 and Figure 2As shown, in this embodiment, the frame 10 has a first side 11 and a second side 12 facing each other. The material roll fixing assembly 20 and the padding cloth winding device 30 pass through the first side 11 and the second side 12. The mounting positions of the material roll fixing assembly 20 and the padding cloth winding device 30 are both located on the first side. This layout facilitates the placement and replacement of material rolls by operators, and also facilitates the maintenance and adjustment of the padding cloth winding device 30. The first side is usually designed to face the operator or the production line, ensuring the convenience and safety of operation. Correspondingly, unlike the material roll fixing assembly 20 and the padding cloth winding device 30, the drive assembly is located on the second side of the frame 10, opposite to the first side. The second side is the side that is not easily accessible to the operator, which can effectively reduce the risk of damage caused by accidental collisions or improper operation. By separating the drive components from the working components and arranging them on both sides of the frame 10, space can be utilized more rationally, avoiding mutual interference between the components inside the equipment. On the other hand, this layout also makes the power transmission path clearer and more direct, eliminating the need for complex or long-distance power transmission, reducing losses and complexity in power transmission, improving the overall operating efficiency of the device, reducing energy waste, and lowering the maintenance cost of the equipment.

[0034] like Figures 1 to 4 As shown, in this embodiment, there are multiple drive components, roll fixing components 20, and padding cloth winding devices 30, and they are arranged in sets in a one-to-one correspondence. Each set of components includes a drive component, a roll fixing component 20, and a padding cloth winding device 30. These components are designed to correspond one-to-one and work together to complete the opening of films of specific specifications or types and the winding or rewinding of padding cloth. By increasing the number of sets of components, multiple rolls of film can be processed simultaneously to meet the high efficiency requirements of the production line. Each set of drive components, material roll fixing components 20, and padding cloth winding device 30 are arranged at intervals on the surface of the frame 10, that is, between the first side 11 and the second side 12 of the frame 10, along the length of the frame 10, each set of components maintains a certain distance. On the one hand, this spaced arrangement of components allows operators to easily operate between the sets of components without having to work in a confined space, providing operators with sufficient working space and improving the efficiency of material change and equipment maintenance. On the other hand, when maintenance or repair is required, only the relevant components need to be stopped without affecting the operation of the entire production line, thereby improving production efficiency and equipment flexibility. The guide opening device in this embodiment is provided with two sets of components, each of which can work independently, and each set of components includes a drive component, a material roll fixing component 20, and a padding cloth winding device 30.

[0035] It should be noted that a plurality of material rolls can be installed simultaneously at a station where the material roll fixing assembly 20 is located, and only one material roll is used for normal unwinding, and the other material roll is used as a backup. When the unwound material roll is about to be exhausted, the backup material roll is connected to realize continuous work, thereby further improving efficiency. In this embodiment, the one-use-one-backup form is adopted, that is, two material rolls are installed at one station, one material roll is used for normal unwinding, and the other material roll is used as a backup.

[0036] Optionally, the number of complete assemblies can be increased or decreased according to actual production conditions, so as to adapt to different scales of production lines and processing requirements.

[0037] As shown in Figure 1 In this embodiment, the unwinding device further comprises a traction assembly 60 and a floating roller assembly 70. The traction assembly 60 is arranged on the downstream side of the material roll fixing assembly 20. The separated rubber material is conveyed to the traction assembly 60 and is conveyed by the traction assembly 60. Specifically, after the film is unwound from the material roll fixing assembly 20, it first passes through the traction assembly 60. The traction assembly 60 can accurately control the conveying speed and direction of the film by the driving of the traction motor of the traction assembly 60, so as to ensure that the film can be conveyed at a predetermined speed and path during unwinding, avoid relaxation or excessive stretching of the film during conveying, and thus maintain the material performance of the film. The floating roller assembly 70 is located on the downstream side of the traction assembly 60. The rubber material is conveyed to the floating roller assembly 70 after being conveyed by the traction assembly 60, and the floating roller assembly 70 mainly adjusts the contact pressure with the film to adapt to the stress change of the film during conveying, and ensures the stability of the tension of the film during subsequent conveying, thereby improving the precision and quality of film lamination. Working process: in the film unwinding mode, the driving assembly transmits power to the blanket winding device 30 through the power switching device 50, and the traction assembly 60 is also started, so as to ensure that the film is stably conveyed to the floating roller assembly 70 after unwinding and blanket peeling. The floating roller assembly 70 continues to convey backward after adjusting the stress. When the material roll is not used up but needs to be replaced, the film is cut in front of the traction assembly 60 at this time. In the blanket winding mode, the traction assembly 60 and the floating roller assembly 70 are in a static state to avoid interference with the winding process. Through the arrangement of the traction assembly 60 and the floating roller assembly 70, the conveying of the film is stable, the defects in the unwinding process are avoided, and the quality of the film during unwinding or winding is ensured.

[0038] As shown in Figure 1 and Figure 2As shown, in this embodiment, the traction component 60 and the floating roller component 70 are not limited to a single setting, but are designed as multiple units, arranged alternately along the conveying direction of the rubber material to ensure that the tension and position of the rubber material can be precisely controlled and adjusted during the transmission process. When the rubber material is conveyed in the guide device, it first passes through the first traction component 60. This component applies a certain tension to the rubber material through a traction roller driven by a motor, controlling its conveying speed and direction to ensure that the rubber material can move smoothly along the predetermined path. Subsequently, the rubber material enters the first floating roller component 70, where a set of rollers that can float up and down dynamically adjust according to the actual tension of the rubber material to eliminate tension fluctuations caused by the action of the traction component 60 and maintain the flatness of the rubber material. Through the alternating arrangement of the traction component 60 and the floating roller component 70, the tension and position of the rubber material are adjusted multiple times during the process from the material roll to the final conveying to the edge-wrapping device. This not only improves the stability of the rubber material conveying but also ensures that the rubber material is always in an appropriate tension and flat state throughout the entire guide process.

[0039] like Figure 1 As shown, in this embodiment, the guide opening device also includes a material tail detection component 80, which is located on the conveying path of the adhesive material and detects the adhesive material. Specifically, the material tail detection component 80 is positioned above the roll fixing component 20 and can monitor the continuity of the adhesive material in real time. When the adhesive material is about to run out, and the material tail detection component 80 detects the end of the adhesive material or an interruption in the conveying process caused by the running out of adhesive material, the system will immediately receive a signal, triggering the control system to stop the operation process, allowing the operator to efficiently replace the adhesive material. After the new roll is replaced, when the material tail detection component 80 detects adhesive material on the roll fixing component 20, it triggers the control system to restart the guide opening device for operation. By setting the material tail detection component 80, production interruptions caused by running out of adhesive material can be prevented, ensuring the continuous operation of the production line and the stability of product quality.

[0040] Optionally, the material tail detection component 80 can use photoelectric sensors, magnetic sensors or mechanical touch detection technologies, as long as it can accurately and timely detect the remaining state of the rubber material.

[0041] In this embodiment, a molding machine is also provided, including the aforementioned guide device. The molding machine integrating the guide device not only eliminates the need for manual intervention throughout the entire process, realizing automated continuous production on the production line, greatly reducing downtime, improving production efficiency and finished product quality, but also ensures the smoothness of the film from the roll to the bonding process, significantly improving the continuity of the entire tire production process and the quality of the finished product, while also enhancing the automation level and production adaptability of the equipment.

[0042] It should be noted that "multiple" in the above embodiments refers to at least two.

[0043] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0044] 1. The automatic rewinding of the cloth is realized, the production interruption time is reduced, the flexibility and efficiency of the production line are improved, the operation process is simplified, the production cost is reduced, the time-consuming and labor of manual rewinding is avoided, the production efficiency and material utilization rate are improved;

[0045] 2. Through the design of the power switching device, the guide opening device can not only efficiently guide the opening of the film and the winding of the cloth, but also quickly switch to the automatic rewinding mode when production is needed, ensuring the continuity of the production line and the effective recycling of materials;

[0046] 3. The adjustment of the power transmission path is realized through the built-in clutch in the power switching device, ensuring that the output of the driving motor can change according to the operation mode, and ensuring that the power can be selectively transmitted to the cloth winding device or the roll fixing assembly;

[0047] 4. This layout also makes the power transmission path clearer and more direct, so that it does not need complex or long-distance power transmission, reduces the loss and complexity in power transmission, improves the overall operation efficiency of the device, reduces energy waste, and reduces the maintenance cost of the equipment;

[0048] 5. Through the setting of the traction assembly and the floating roller assembly, the stable conveying of the film is ensured, the defects in the guide opening process are avoided, and the quality of the film in the guide opening or rewinding process is ensured;

[0049] 6. The production interruption caused by the film running out can be prevented by setting the tail detection assembly, ensuring the continuous operation of the production line and the stability of the product quality.

[0050] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

[0051] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0052] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and in the above-described drawings are used only for distinguishing between similar objects and do not necessarily have to describe a specific sequential or chronological order. It is to be understood that the data so distinguished can be interchanged, under appropriate circumstances, such that the embodiments of the present application described herein can be practiced in other than the illustrated or described order.

[0053] The preferred embodiments of the present application have been described above with the specific details. Obviously, the present application can be carried out without the specific details. It is to be understood that the above-described embodiments are only used to illustrate the present application, and the present application can be modified and changed in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for guiding and opening, characterized in that The utility model relates to a kind of paper roll winding machine, including: Frame (10); Roll fixing assembly (20) for placing roll, the roll fixing assembly (20) is rotatably connected with the frame (10); Cloth winding device (30) for winding cloth, the cloth winding device (30) is rotatably connected with the frame (10); Driving assembly, the driving assembly is selectively driven with one of the roll fixing assembly (20) and the cloth winding device (30), the driving assembly has first driving state and second driving state, the driving assembly is in the first driving state, the driving assembly is driven with the cloth winding device (30), and the cloth winding device (30) drives the roll guide opening conveying;The driving assembly is in the second driving state, the driving assembly is connected with the roll fixing assembly (20), and the roll fixing assembly (20) drives the roll and the cloth reverse rotation, so that the cloth is recycled to the roll.

2. The device of claim 1, wherein, The driving assembly includes: Driving motor (40); Power switching device (50), the power switching device (50) has input, first output and second output, and the first output and the second output are both detachably connected between the input, the input is drivingly connected with the driving motor (40), the first output is drivingly connected with the cloth winding device (30), the second output is drivingly connected with the roll fixing assembly (20), the input is connected with the first output when the driving assembly is in the first driving state, the input is connected with the second output when the driving assembly is in the second driving state.

3. The unblocking device according to claim 2, characterized in that The power switching device (50) includes clutch, the clutch is movably arranged between the first output and second output, the clutch is drivingly connected with the input, and the clutch is switched when moving with the first output and second output to make one of the first output and the second output be connected with the input through the clutch.

4. The unblocking device according to claim 3, characterized in that The clutch is clutch gear, the first output and the second output both have interface gear, and the clutch gear is movably arranged between the interface gear of the first output and the second output.

5. The unblocking device according to any one of claims 1 to 4, characterized in that The frame (10) has opposite first side (11) and second side (12), the roll fixing assembly (20) and the cloth winding device (30) are arranged in the first side (11) and the second side (12), and the installation site of the roll fixing assembly (20) and the cloth winding device (30) is located in the first side, and the driving assembly is located in the second side.

6. The unblocking device according to any one of claims 1 to 4, characterized in that The driving assembly, the roll fixing assembly (20) and the cloth winding device (30) are all multiple, and one-to-one corresponding set is arranged, and each set of the driving assembly, the roll fixing assembly (20) and the cloth winding device (30) are arranged at the surface of the frame (10) with interval.

7. The unblocking device according to any one of claims 1 to 4, characterized in that The guiding and opening device further comprises: a traction assembly (60) arranged on the downstream side of the material roll fixing assembly (20), the separated rubber material being conveyed to the traction assembly (60) and being conveyed by the traction assembly (60); a floating roller assembly (70) arranged on the downstream side of the traction assembly (60), the rubber material being further conveyed after being conveyed to the floating roller assembly (70) by the traction assembly (60).

8. The unblocking device according to claim 7, characterized in that The traction assembly (60) and the floating roller assembly (70) are multiple and are arranged alternately in sequence along the conveying direction of the rubber material.

9. The unblocking device according to any one of claims 1 to 4, characterized in that The guiding and opening device further comprises a tail detection assembly (80) arranged on the conveying path of the rubber material and detecting the rubber material.

10. A molding machine characterized by comprising: A guiding and opening device comprising any one of claims 1 to 9.

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