Winding film thinning and stretching device

Abstract

The winding film thinning and stretching device comprises a fixing plate, a first conveying roller is movably arranged on one side of the interior of the fixing plate through a rotating shaft, and a second conveying roller is movably arranged on the portion, on one side of the first conveying roller, of the interior of the fixing plate through a rotating shaft; a linkage mechanism used for linkage of the first conveying roller and the second conveying roller to rotate at the same time is arranged at one end of the first conveying roller and one end of the second conveying roller, and the linkage mechanism comprises a belt wheel, a rotating disc, a sliding groove, a friction block and a transmission belt. A rotating disc is fixedly arranged at the end, where the second conveying roller is located, of the rotating shaft, and a plurality of sliding grooves are formed in the outer side surface of the rotating disc. According to the film stretching device, the first conveying roller and the second conveying roller have different conveying speeds, so that the film stretching effect is achieved, the device can carry out high-speed assembly line type stretching work without stopping, and therefore the machining efficiency of the device can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of stretch film production, in particular to a stretch film thinning and stretching device. Background Art

[0002] Stretch film production stretching is the process of stretching the original stretch film material mechanically or physically to increase its length and width, thereby changing its physical properties. This process is usually used to prepare stretch films with specific tensile properties and winding properties to meet the needs of different industries and application fields.

[0003] In the prior art, such stretching devices for producing and processing stretching films, such as the Chinese patent with application number 202122633088.9, are used to start the pneumatic cylinder 1 to drive the connecting plate to move downward, and due to the hinge between the connecting plate and the two movable plates, the two movable columns will move opposite to each other inside the fixed plate, so that the stretching film on the outer surface of the roller 2 can be stretched. When the pneumatic cylinder 1 moves the connecting plate upward, the stretching work cannot be performed. In this way, the entire stretching process needs to suspend the transmission work of the entire film to ensure the stretching quality, and the stretching can only be performed one section at a time, and continuous stretching work cannot be formed. Therefore, an improved stretching film thinning and stretching device is needed to address this problem. Summary of the invention

[0004] The object of the present invention is to provide a wrapping film thinning and stretching device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wrapping film thinning and stretching device, comprising a fixed plate, a first transmission roller is movably arranged on one side of the fixed plate through a rotating shaft, a second transmission roller is movably arranged on one side of the first transmission roller through a rotating shaft inside the fixed plate, a linkage mechanism for linking the first transmission roller and the second transmission roller to rotate simultaneously is arranged at one end of the first transmission roller and the second transmission roller, the linkage mechanism comprises a pulley, a rotating disk, a slide groove, a friction block, and a transmission belt, a pulley is fixedly arranged at one end of the rotating shaft where the first transmission roller is located, a rotating disk is fixedly arranged at one end of the rotating shaft where the second transmission roller is located, a plurality of slide grooves are opened on the outer surface of the rotating disk, a friction block is movably engaged with the slide groove through a slider, a transmission belt is sleeved between the pulley and the outer surface of the friction block, and a transmission mechanism for controlling the movement of the friction block is arranged in the middle of the surface of the rotating disk.

[0006] Preferably, the transmission mechanism includes a screw, an adjusting block, a connecting ring and a transmission rod, a screw is fixedly provided in the middle of the surface of the rotating disk, an adjusting block is movably screwed on the outer surface of the screw through a thread, a connecting ring is movably provided on the adjusting block, and the connecting ring is movably engaged with the outer surface of the adjusting block through an annular groove, so that the connecting block can rotate relative to the adjusting block, but cannot be relatively displaced, a plurality of transmission rods are movably provided on the outer surface of the connecting ring through a rotating shaft, and one end of the transmission rod close to the friction block is movably connected to the friction block through the rotating shaft, and the spacing between the friction blocks can be quickly adjusted through the transmission mechanism, so that the pulley and the friction block can be adjusted to produce different speed ratios, so that the first transmission roller and the second transmission roller transmit the film at different transmission speeds.

[0007] Preferably, an electric push rod is fixedly provided on the outer surface of the fixed plate, a mounting block is fixedly provided on the movable end of the electric push rod, a tensioning wheel is movably provided on the outer surface of the mounting block via a rotating shaft, and the tensioning wheel is sleeved on the outer surface of the transmission belt. Since the friction block of the device can change the size of the circle as needed, the tensioning wheel is driven up and down by the contraction of the electric push rod, thereby ensuring that the transmission belt can be tensioned at all times as the friction block is adjusted.

[0008] Preferably, a motor is fixedly provided on the side of the fixed plate surface away from the pulley, and the power output shaft end of the motor is transmission-connected to the rotating shaft where the first transmission roller is located, so that the first transmission roller can be conveniently driven to rotate by the motor, and when the first transmission roller rotates, the second transmission roller can be driven to rotate together through the linkage mechanism, and the film in the device is transmitted from the second transmission roller to the first transmission roller, and the linkage mechanism of the device will cause a speed difference between the first transmission roller and the second transmission roller, so that the linear speed of the second transmission roller is slightly lower than that of the first transmission roller, so that the film between the first transmission roller and the second transmission roller will be stretched, and such a stretching principle can carry out high-speed assembly line-style stretching work without stopping, thereby improving the processing efficiency of the device.

[0009] Preferably, the fixed plate is internally provided with squeezing rollers at the upper ends of the first conveying roller and the second conveying roller through a rotating shaft. The squeezing rollers can ensure that the stretched film is tightly attached to the outer surfaces of the first conveying roller and the second conveying roller, so as to ensure that the first conveying roller and the second conveying roller can convey and stretch the film.

[0010] Preferably, a limit block is fixedly provided on the outer surface of the friction block, and the limit block can prevent the transmission belt from falling off the outer surface of the friction block.

[0011] Preferably, the screw drive is connected to a fine-tuning motor.

[0012] Preferably, a film thickness detection element is provided on the fixed plate at the front end of the first transport roller.

[0013] Preferably, the fine-tuning motor, film thickness detection element, electric motor, and electric push rod are connected and controlled by a control unit.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The film of the present invention is transmitted from the second transmission roller to the first transmission roller. The first transmission roller is driven to rotate by the motor, and the second transmission roller is driven to rotate by the linkage mechanism, so that the film can be transmitted. At this time, since the diameter of the circle surrounded by the friction block is larger than the diameter of the pulley itself, the linear speed of the second transmission roller can be slightly lower than that of the first transmission roller. In this way, the film between the first transmission roller and the second transmission roller can be stretched to a certain extent by the different transmission speeds of the first transmission roller and the second transmission roller, because the transmission speed of the first transmission roller is greater than the transmission speed of the second transmission roller, so that the film can be thinned. In addition, the device can perform high-speed assembly line-style stretching without stopping, thereby improving the processing efficiency of the device.

[0016] 2. The present invention can quickly adjust the distance between the friction blocks through the transmission mechanism, so that the pulley and the friction block can be adjusted to produce different speed ratios, so that the first transmission roller and the second transmission roller can transmit the film at different transmission speeds, thereby changing the degree of stretching of the film, thereby improving the use effect of the device.

[0017] 3. The control unit of the present invention is used to control the operation of the fine-tuning motor, the film thickness detection element, the motor, and the electric push rod. It can control the operation of the fine-tuning motor, the motor, and the electric push rod according to the film thickness detected by the film thickness detection element. The film is stretched and thinned to a set thickness between the first transmission roller and the second transmission roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a wrapping film thinning and stretching device of the present invention;

[0019] Figure 2 A side view of a wrapping film thinning and stretching device according to the present invention;

[0020] Figure 3 The figure is an overall structural view of a transmission mechanism in a wrapping film thinning and stretching device according to the present invention.

[0021] In the figure: 1. fixed plate; 2. first transmission roller; 3. second transmission roller; 4. pulley; 5. rotating disk; 6. slide groove; 7. friction block; 8. transmission belt; 9. screw; 10. adjustment block; 11. connecting ring; 12. transmission rod; 13. electric push rod; 14. mounting block; 15. tensioning wheel; 16. motor; 17. squeezing roller; 18. limit block; 19. film thickness detection element. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-3 The present invention provides a technical solution: a wrapping film thinning and stretching device, comprising a fixed plate 1, a first transmission roller 2 is movably arranged on one side of the fixed plate 1 through a rotating shaft, a second transmission roller 3 is movably arranged on one side of the first transmission roller 2 through a rotating shaft inside the fixed plate 1, a linkage mechanism for linking the first transmission roller 2 and the second transmission roller 3 to rotate simultaneously is arranged at one end of the first transmission roller 2 and the second transmission roller 3, the linkage mechanism comprises a pulley 4, a rotating disk 5, a slide groove 6, a friction block 7, and a transmission belt 8, a pulley 4 is fixedly arranged at one end of the rotating shaft where the first transmission roller 2 is located, a rotating disk 5 is fixedly arranged at one end of the rotating shaft where the second transmission roller 3 is located, a plurality of slide grooves 6 are opened on the outer surface of the rotating disk 5, a friction block 7 is movably engaged with a slider inside the slide groove 6, a transmission belt 8 is sleeved between the pulley 4 and the outer surface of the friction block 7, and a transmission mechanism for controlling the movement of the friction block 7 is arranged in the middle of the surface of the rotating disk 5.

[0024] The transmission mechanism includes a screw 9, an adjusting block 10, a connecting ring 11, and a transmission rod 12. The screw 9 is fixedly arranged in the middle of the surface of the rotating disk 5. The outer surface of the screw 9 is provided with an adjusting block 10 through a threaded movably screwed connection. The adjusting block 10 is movably provided with a connecting ring 11. The connecting ring 11 is movably engaged with the outer surface of the adjusting block 10 through an annular groove, so that the connecting block can rotate relative to the adjusting block 10, but cannot be relatively displaced. A plurality of transmission rods 12 are movably arranged on the outer surface of the connecting ring 11 through a rotating shaft. One end of the transmission rod 12 close to the friction block 7 is movably connected to the friction block 7 through the rotating shaft. The spacing between the friction blocks 7 can be quickly adjusted through the transmission mechanism, so that the pulley 4 and the friction block 7 can be adjusted to produce different speed ratios, so that the first transmission roller 2 and the second transmission roller 3 can transmit the film at different transmission speeds.

[0025] An electric push rod 13 is fixedly provided on the outer surface of the fixed plate 1, and a mounting block 14 is fixedly provided on the movable end of the electric push rod 13. A tensioning wheel 15 is movably provided on the outer surface of the mounting block 14 through a rotating shaft. The tensioning wheel 15 is sleeved on the outer surface of the transmission belt 8. Since the friction block 7 of the device can change the size of the circle as needed, the tensioning wheel 15 is driven up and down by the contraction of the electric push rod 13, so that the transmission belt 8 can be tensioned at all times as the friction block 7 is adjusted;

[0026] A motor 16 is fixedly arranged on one side of the surface of the fixed plate 1 away from the pulley 4, and the power output shaft end of the motor 16 is transmission-connected with the rotating shaft where the first transmission roller 2 is located, and the motor 16 can conveniently drive the first transmission roller 2 to rotate, and when the first transmission roller 2 rotates, the second transmission roller 3 can be driven to rotate together through the linkage mechanism, and the linkage mechanism of the device will cause the first transmission roller 2 and the second transmission roller 3 to have a speed difference, so that the linear speed of the second transmission roller 3 is slightly lower than that of the first transmission roller 2, when the film is transmitted from the second transmission roller 3 to the first transmission roller 1, the film between the first transmission roller 2 and the second transmission roller 3 will be stretched, and such a stretching principle can carry out high-speed assembly line-style stretching work without stopping, thereby improving the processing efficiency of the device;

[0027] Inside the fixed plate 1, a squeezing roller 17 is movably provided at the upper ends of the first conveying roller 2 and the second conveying roller 3 through a rotating shaft, and the squeezing roller 17 can ensure that the stretched film is tightly attached to the outer surfaces of the first conveying roller 2 and the second conveying roller 3, so as to ensure that the first conveying roller 2 and the second conveying roller 3 can convey and stretch the film;

[0028] A limit block 18 is fixedly provided on the outer surface of the friction block 7 , and the limit block 18 can prevent the transmission belt 8 from falling off the outer surface of the friction block 7 .

[0029] Working principle: When using this device, the first transmission roller 2 is driven to rotate by the motor 16, so that the second transmission roller 3 can be driven to rotate through the linkage mechanism, so that the film can be transmitted. When working, the film is transmitted from the second transmission roller 3 to the first transmission roller 1. At this time, since the diameter of the circle surrounded by the friction block 7 is larger than the diameter of the pulley 4 itself, it can play a role of deceleration transmission. In this way, through the different transmission speeds of the first transmission roller 2 and the second transmission roller 3, since the linear speed of the second transmission roller 3 is lower than the transmission speed of the first transmission roller 2, the film between the first transmission roller 2 and the second transmission roller 3 can be stretched to a certain extent, and this device can perform high-speed assembly line-style stretching without stopping, thereby improving the processing efficiency of the device;

[0030] When the device is in use, the distance between the friction blocks 7 can be quickly adjusted through the transmission mechanism, so that the pulley 4 and the friction block 7 can be adjusted to produce different speed ratios, so that the first transmission roller 2 and the second transmission roller 3 can transmit the film at different transmission speeds, thereby changing the degree of stretching of the film, thereby improving the use effect of the device.

[0031] Furthermore, the screw 9 is driven and connected with a fine-tuning motor, which can drive the screw 9 to rotate, thereby adjusting the spacing between the friction blocks 7 and changing the linear speed of the second transmission roller 3. A film thickness detection element 19 is provided on the fixed plate 1 at the front end of the first transmission roller 2. The fine-tuning motor, the film thickness detection element 19, the motor 16, and the electric push rod 13 are controlled and connected through a control unit. The control unit of the present invention is used to control the operation of the fine-tuning motor, the film thickness detection element 19, the motor 16, and the electric push rod 13. It can control the operation of the fine-tuning motor, the motor 16, and the electric push rod 13 according to the film thickness detected by the film thickness detection element, and the film is stretched and thinned to a set thickness between the first transmission roller 2 and the second transmission roller 3.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wrapping film thinning and stretching device, comprising a fixing plate (1), characterized in that: A first transmission roller (2) is movably arranged on one side of the fixed plate (1) through a rotating shaft, and a second transmission roller (3) is movably arranged on one side of the first transmission roller (2) through a rotating shaft. A linkage mechanism for linking the first transmission roller (2) and the second transmission roller (3) to rotate simultaneously is arranged at one end of the first transmission roller (2) and the second transmission roller (3). The linkage mechanism comprises a pulley (4), a rotating disk (5), a slide groove (6), a friction block (7), and a transmission belt (8). A pulley (4) is fixedly arranged on one end of the rotating shaft where the first transmission roller (2) is located, and a rotating disk (5) is fixedly arranged on one end of the rotating shaft where the second transmission roller (3) is located. A plurality of slide grooves (6) are provided on the outer surface of the rotating disk (5), and a friction block (7) is movably engaged with the slide groove (6) through a slider. A transmission belt (8) is sleeved between the pulley (4) and the outer surface of the friction block (7), and a transmission mechanism for controlling the movement of the friction block (7) is provided in the middle of the surface of the rotating disk (5).

2. A wrapping film thinning and stretching device according to claim 1, characterized in that: The transmission mechanism comprises a screw (9), an adjusting block (10), a connecting ring (11) and a transmission rod (12); the screw (9) is fixedly arranged in the middle of the surface of the rotating disk (5); the adjusting block (10) is movably screwed on the outer surface of the screw (9) through a thread; the adjusting block (10) is movably arranged with a connecting ring (11); the connecting ring (11) is movably engaged with the outer surface of the adjusting block (10) through an annular clamping groove, so that the connecting block can rotate relative to the adjusting block (10), but cannot be relatively displaced; a plurality of transmission rods (12) are movably arranged on the outer surface of the connecting ring (11) through a rotating shaft; one end of the transmission rod (12) close to the friction block (7) is movably connected to the friction block (7) through the rotating shaft.

3. The wrapping film thinning and stretching device according to claim 1, characterized in that: An electric push rod (13) is fixedly arranged on the outer surface of the fixed plate (1), a mounting block (14) is fixedly arranged on the movable end of the electric push rod (13), a tensioning wheel (15) is movably arranged on the outer surface of the mounting block (14) via a rotating shaft, and the tensioning wheel (15) is sleeved on the outer surface of the transmission belt (8).

4. The wrapping film thinning and stretching device according to claim 1, characterized in that: A motor (16) is fixedly arranged on the side of the surface of the fixed plate (1) away from the pulley (4), and the power output shaft end of the motor (16) is transmission-connected to the rotating shaft where the first transmission roller (2) is located.

5. The wrapping film thinning and stretching device according to claim 1, characterized in that: Inside the fixed plate (1), squeezing rollers (17) are movably arranged at the upper ends of the first transmission roller (2) and the second transmission roller (3) via rotating shafts.

6. The wrapping film thinning and stretching device according to claim 1, characterized in that: A limiting block (18) is fixedly arranged on the outer surface of the friction block (7).

7. The wrapping film thinning and stretching device according to claim 2, characterized in that: The screw rod (9) is drivingly connected to a fine-tuning motor.

8. The wrapping film thinning and stretching device according to claim 7, characterized in that: A film thickness detection element (19) is provided on the fixed plate at the front end of the first transport roller (2).

9. The wrapping film thinning and stretching device according to claim 1, characterized in that: The fine-tuning motor, the film thickness detection element (19), the electric motor (16), and the electric push rod (13) are connected and controlled by a control unit.

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