Plastic crushing device for BOPP film production

Abstract

The utility model belongs to the technical field of BOPP (biaxially-oriented polypropylene) film production, and particularly relates to a plastic crushing device for BOPP film production, which comprises a box body, an inner cavity is formed in the box body, triangular plates I are symmetrically and fixedly mounted on the inner wall of the inner cavity, and sliding chutes are formed in the two triangular plates I; a first baffle and a second baffle are slidably mounted in the two sliding grooves correspondingly, and the protruding strips on the second baffle extend into the first baffle. The driving assembly is located in the box body and used for driving the first baffle and the second baffle to get close to each other or get away from each other; and the two crushing rollers I are rotationally mounted in the inner cavity and are respectively positioned right below the two triangular plates I. When the whole device is used, the crushing operation can be carried out by only one motor, the manufacturing cost of the whole device is reduced, the electricity consumption is reduced, and the crushing efficiency is improved. And a worker can accurately control the discharging speed, and raw materials are prevented from being blocked at the feeding port.

Description

Technical Field

[0001] The utility model belongs to the technical field of BOPP film production, in particular to a plastic crushing device for BOPP film production. Background Art

[0002] BOPP film is a very important flexible packaging material. BOPP film is colorless, odorless, tasteless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency.

[0003] For example, the Chinese patent with the publication number CN216031848U discloses a plastic crushing device for BOPP film production, which is characterized by comprising a first crushing box, a second crushing box, and a support frame; the first crushing box is provided with a first crushing tool, the first crushing tool is connected to a first motor, the first motor is arranged on both sides of the first crushing box, the first crushing box is symmetrically fixed with a first support seat on both sides, the first support seat is used to support the first motor, the first crushing box is provided with a spray device, the bottom of the first crushing box is fixed with a second crushing box, the second crushing box is provided with a second crushing tool arranged equidistantly, and the second crushing tool is connected to a second motor. Through the setting of the utility model, the plastic is crushed twice, which greatly improves the crushing quality, and because the quality of the plastic film is relatively low, the spray device is provided to make the plastic film easy to sink to the second crushing tool, which is convenient for secondary crushing operation, and can also play a role in cooling and dust reduction of the device.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when used, such as: the device uses more motors when used, some motors are expensive and consume more power, which will increase the manufacturing cost of the device, and the device is not easy to control the feeding speed when feeding, and when too much material is fed, it may cause the raw material to be blocked at the feeding port. In view of this, we propose a plastic crushing device for BOPP film production. Utility Model Content

[0006] The utility model aims to provide a plastic crushing device for BOPP film production to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides a plastic crushing device for BOPP film production, comprising:

[0008] A box body, wherein an inner cavity is formed in the box body, a triangular plate 1 is symmetrically fixedly installed on the inner wall of the inner cavity, two triangular plates 1 are formed in each of the two triangular plates 1, a baffle 1 and a baffle 2 are slidably installed in the two baffles 1, respectively, and a convex strip on the baffle 2 extends into the baffle 1;

[0009] A driving assembly, the driving assembly is located in the box body and is used to drive the baffle plate 1 and the baffle plate 2 to move closer to each other or away from each other;

[0010] Two crushing rollers 1, the two crushing rollers 1 are both rotatably installed in the inner cavity and are respectively located directly below the two triangular plates 1, one end of the two crushing rollers 1 passes through one side of the inner cavity and extends to the outside and is fixedly installed with a large gear, and the two large gears are meshed, an L-shaped plate 1 is fixedly installed on one side of the box body and located above the large gear, a motor is fixedly installed on the side of the L-shaped plate 1 away from the large gear, and the output shaft of the motor passes through the L-shaped plate 1 and is coaxially connected to one of the large gears;

[0011] Four crushing rollers 2, each of which is rotatably mounted in the inner cavity and located below the crushing roller 1, and each of which has one end extending through one side of the inner cavity to the outside and fixed with a pinion gear, and each two adjacent pinions are meshed;

[0012] The transmission assembly is located on the output shaft of the motor and is used to enable the output shaft of the motor to drive the four pinion gears to rotate.

[0013] In the present technical solution, when in use, the raw material is first placed in the inner cavity and positioned above the triangular plate 1. Under the action of baffle 1 and baffle 2, the raw material can be prevented from leaking. Subsequently, the motor is started, the motor is energized and works, and then the output shaft of the motor will drive one of the large gears to rotate. Under the action of meshing, one of the large gears will drive the other large gear to rotate. Subsequently, the two large gears will respectively drive the two crushing rollers 1 to rotate. At the same time, the output shaft of the motor will drive one of the small gears to rotate through the transmission assembly. Under the action of meshing, the remaining small gears will rotate together. Subsequently, the small gear will drive the crushing roller 2 to rotate, and then the drive assembly is rotated. , so that the driving component drives baffle 1 and baffle 2 to move away from each other, so that the convex strip on baffle 2 is pulled out from baffle 1, thereby being able to adjust the distance between baffle 1 and baffle 2, so that the staff can accurately control the discharge speed and prevent the raw materials from being blocked at the feed inlet. Subsequently, under the action of the two triangular plates 1, the raw materials will fall between the two crushing rollers 1 for crushing. Subsequently, through the spray device, the raw materials can sink to the crushing roller 2 for crushing. Under the action of the two triangular plates 2 and the isosceles triangular plates, the raw materials can fall between the two crushing rollers 2 rotating in opposite directions for crushing. Subsequently, the crushed raw materials are discharged from the discharge port of the inner cavity for collection.

[0014] In the above technical solution, further, the driving component includes:

[0015] A rectangular groove, wherein the rectangular groove is opened in the box body and is located on one side of the inner cavity, the rectangular groove is connected with the inner cavity and the slide groove, one end of the baffle plate 1 and the baffle plate 2 both extend into the rectangular groove, a bidirectional threaded rod is rotatably installed in the rectangular groove, and one end of the bidirectional threaded rod passes through one end of the baffle plate 1 and one end of the baffle plate 2 and one side of the rectangular groove and extends to the outside, and a rocker is fixedly installed on one end of the bidirectional threaded rod.

[0016] In this technical solution, the rocker is rotated to drive the bidirectional threaded rod to rotate. Under the action of the thread, the bidirectional threaded rod will drive baffle one and baffle two to move away from each other, so that the convex strip on baffle two is pulled out from baffle one, thereby adjusting the distance between baffle one and baffle two.

[0017] In the above technical solution, further, one end of baffle one and one end of baffle two are both threadedly connected to the bidirectional threaded rod, and the bidirectional threaded rod is provided with two sections of threads with opposite rotation directions, and one end of baffle two and one baffle one are both slidably connected to the rectangular groove.

[0018] In this technical solution, under the action of the thread, the bidirectional threaded rod can drive baffle plate 1 and baffle plate 2 to move closer to or away from each other when rotating, ensuring that one end of baffle plate 2 and baffle plate 1 can slide in the rectangular groove.

[0019] In the above technical solution, further, the transmission assembly includes:

[0020] Pulley 2 is fixedly installed on the output shaft of the motor and is located between L-shaped plate 1 and one of the large gears. L-shaped plate 2 is fixedly installed on one side of the box and below the small gear. Pulley 1 is rotatably installed on the side of L-shaped plate 2 close to the small gear, and a belt is installed for transmission between pulley 1 and pulley 2, and one end of pulley 1 is coaxially connected to one of the small gears.

[0021] In this technical solution, the motor is started, powered on and working, and then the output shaft of the motor will drive pulley two to rotate, the rotation of pulley two will drive the belt transmission, and the belt will drive pulley one to rotate, and then pulley one will drive one of the pinions to rotate, and under the action of meshing, the remaining pinions will be driven to rotate together.

[0022] In the above technical solution, further, the output shaft of the motor is rotationally connected to the L-shaped plate.

[0023] In this technical solution, it is ensured that the motor can run normally.

[0024] In the above technical solution, further, an isosceles triangle plate is fixedly installed in the inner cavity and located directly above two of the crushing rollers 2, and a triangle plate 2 is fixedly installed in the inner cavity and located above the other two crushing rollers 2, and the cross-sectional size of the triangle plate 2 is a right triangle.

[0025] In this technical solution, it is ensured that the raw material can fall between the two crushing rollers rotating in opposite directions to be crushed under the action of the isosceles triangle plate and the two triangle plates 2, so that the raw material can be crushed more finely.

[0026] In the above technical solution, further, the convex strip on the second baffle is plugged into and matched with the first baffle.

[0027] In this technical solution, it is ensured that the convex strip on the second baffle can be inserted into the first baffle.

[0028] The beneficial effects of the utility model are:

[0029] 1. When using the plastic crushing device for BOPP film production, the raw material is first placed in the inner cavity and located above the triangle plate 1. Under the action of the baffle plate 1 and the baffle plate 2, the raw material can be prevented from leaking. Then, the motor is started, the motor is powered on and works. Then, the output shaft of the motor will drive one of the large gears to rotate. Under the action of meshing, one of the large gears will drive the other large gear to rotate. Then, the two large gears will respectively drive the two crushing rollers 1 to rotate. At the same time, the output shaft of the motor will drive one of the small gears to rotate through the transmission component. Under the action of meshing, the remaining small gears will rotate together. Then, the small gear will drive the crushing roller 2 to rotate. In this process, only one motor is needed to perform the crushing operation, which reduces the manufacturing cost of the overall device and reduces electricity consumption.

[0030] 2. When feeding, the plastic crushing device for BOPP film production rotates the driving component to drive baffle plate 1 and baffle plate 2 to move away from each other, so that the convex strip on baffle plate 2 is pulled out of baffle plate 1, thereby adjusting the distance between baffle plate 1 and baffle plate 2, so that the staff can accurately control the discharging speed and prevent the raw materials from being blocked at the feeding port. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is one of the internal structure diagrams of the box in the utility model;

[0033] Figure 3 This is the second schematic diagram of the internal structure of the box in the utility model;

[0034] Figure 4 For the utility model Figure 3 The enlarged structural diagram at A in the middle;

[0035] Figure 5 It is a schematic diagram of the structure of baffle plate 1 and baffle plate 2 in the utility model;

[0036] Figure 6 It is a schematic diagram of the regional structure of the pulley 2 in the utility model.

[0037] Figure 7 This is the third schematic diagram of the internal structure of the box in the utility model;

[0038] Figure 8 This is the fourth schematic diagram of the internal structure of the box in the present utility model.

[0039] The symbols in the figure are:

[0040] 1. Box body; 2. Triangle plate 1; 3. Inner cavity; 4. Big gear; 5. L-shaped plate 1; 6. Belt; 7. L-shaped plate 2; 8. Pulley 1; 9. Pinion; 10. Slide; 11. Baffle 1; 12. Baffle 2; 13. Crushing roller 1; 14. Triangle plate 2; 15. Crushing roller 2; 16. Isosceles triangle plate; 17. Bidirectional threaded rod; 18. Pulley 2; 19. Motor; 20. Rectangular groove. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0042] In the description of the present application, 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. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0044] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0045] It should be noted that, in the present application, the terms "comprise", "include" or any other variant 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. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0046] Embodiment 1:

[0047] See also Figure 1 - Figure 8 As shown, this embodiment provides a plastic crushing device for BOPP film production, comprising:

[0048] A box body 1, an inner cavity 3 is formed in the box body 1, a triangular plate 2 is symmetrically fixedly installed on the inner wall of the inner cavity 3, a slide groove 10 is formed in each of the two triangular plates 2, a baffle 11 and a baffle 2 12 are slidably installed in the two slide grooves 10, and a convex strip on the baffle 2 12 extends into the baffle 1 11;

[0049] A driving assembly, the driving assembly is located in the housing 1 and is used to drive the baffle 1 11 and the baffle 2 12 to move closer to or away from each other;

[0050] Two crushing rollers 13, both of which are rotatably mounted in the inner cavity 3 and are respectively located directly below the two triangular plates 2, one end of each of the two crushing rollers 13 passes through one side of the inner cavity 3 and extends to the outside and is fixedly mounted with a large gear 4, and the two large gears 4 are meshed, an L-shaped plate 5 is fixedly mounted on one side of the box body 1 and located above the large gear 4, a motor 19 is fixedly mounted on the side of the L-shaped plate 5 away from the large gear 4, and the output shaft of the motor 19 passes through the L-shaped plate 5 and is coaxially connected to one of the large gears 4;

[0051] Four crushing rollers 15, each of which is rotatably mounted in the inner cavity 3 and located below the crushing roller 13, one end of each of which passes through one side of the inner cavity 3 and extends to the outside and is fixedly mounted with a pinion 9, and every two adjacent pinions 9 are meshed;

[0052] The transmission assembly is located on the output shaft of the motor 19 and is used to enable the output shaft of the motor 19 to drive the four pinions 9 to rotate.

[0053] When in use, the raw material is first placed in the inner cavity 3 and located above the triangular plate 1 2. Under the action of the baffle 1 11 and the baffle 2 12, the raw material can be prevented from leaking. Subsequently, the motor 19 is started, the motor 19 is energized and works, and then the output shaft of the motor 19 will drive one of the large gears 4 to rotate. Under the action of meshing, one of the large gears 4 will drive the other large gear 4 to rotate. Subsequently, the two large gears 4 will respectively drive the two crushing rollers 1 13 to rotate. At the same time, the output shaft of the motor 19 will drive one of the small gears 9 to rotate through the transmission component. Under the action of meshing, the remaining small gears 9 will rotate together. Subsequently, the small gear 9 will drive the crushing roller 2 15 to rotate. Subsequently, the driving component is rotated to make The driving assembly drives baffle 11 and baffle 2 12 to move away from each other, so that the convex strip on baffle 2 12 is pulled out from baffle 11, so that the distance between baffle 11 and baffle 2 12 can be adjusted, so that the staff can accurately control the discharge speed to prevent the raw materials from being blocked at the feed port. Subsequently, under the action of the two triangular plates 1 2, the raw materials will fall between the two crushing rollers 13 for crushing, and then, through the spray device, the raw materials can sink to the crushing roller 2 15 for crushing, and under the action of the two triangular plates 14 and the isosceles triangular plate 16, the raw materials can fall between the two crushing rollers 15 rotating in opposite directions for crushing, and then, the crushed raw materials are discharged from the discharge port of the inner cavity 3 for collection.

[0054] Embodiment 2:

[0055] This embodiment provides a plastic crushing device for BOPP film production, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The driving component includes:

[0056] A rectangular groove 20 is provided in the box body 1 and is located on one side of the inner cavity 3. The rectangular groove 20 is connected to the inner cavity 3 and the slide groove 10. One end of baffle plate 11 and baffle plate 2 12 extend into the rectangular groove 20. A bidirectional threaded rod 17 is rotatably installed in the rectangular groove 20. One end of the bidirectional threaded rod 17 passes through one end of baffle plate 11 and one end of baffle plate 2 12 and one side of the rectangular groove 20 and extends to the outside. A rocker is fixedly installed on one end of the bidirectional threaded rod 17.

[0057] Among them, the rocker is rotated to drive the bidirectional threaded rod 17 to rotate. Under the action of the thread, the bidirectional threaded rod 17 will drive baffle 11 and baffle 2 12 to move away from each other, so that the convex strip on baffle 2 12 is pulled out from baffle 1 11, thereby adjusting the distance between baffle 1 11 and baffle 2 12.

[0058] Embodiment 3:

[0059] The present embodiment provides a plastic crushing device for BOPP film production. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: one end of baffle 11 and one end of baffle 2 12 are both threadedly connected to a bidirectional threaded rod 17, and the bidirectional threaded rod 17 is provided with two sections of threads with opposite rotation directions. One end of baffle 2 12 and baffle 1 11 are both slidably connected to a rectangular groove 20.

[0060] Wherein, under the action of the thread, the bidirectional threaded rod 17 can drive the baffle 11 and the baffle 2 12 to move closer to or away from each other when rotating, ensuring that the baffle 2 12 and one end of the baffle 1 11 can slide in the rectangular groove 20 .

[0061] Embodiment 4:

[0062] This embodiment provides a plastic crushing device for BOPP film production, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the transmission assembly includes:

[0063] Pulley 2 18, pulley 2 18 is fixedly installed on the output shaft of the motor 19 and is located between the L-shaped plate 1 5 and one of the large gears 4, an L-shaped plate 2 7 is fixedly installed on one side of the box body 1 and below the small gear 9, a pulley 8 is rotatably installed on the side of the L-shaped plate 27 close to the small gear 9, and a belt 6 is installed for transmission between the pulley 18 and the pulley 2 18, and one end of the pulley 8 is coaxially connected to one of the small gears 9.

[0064] Among them, start the motor 19, so that the motor 19 is energized and working, and then the output shaft of the motor 19 will drive the pulley 2 18 to rotate, the rotation of the pulley 2 18 will drive the belt 6 to transmit, and the belt 6 will drive the pulley 1 8 to rotate, and then the pulley 1 8 will drive one of the pinions 9 to rotate, and under the action of meshing, the remaining pinions 9 will be driven to rotate together.

[0065] Embodiment 5:

[0066] This embodiment provides a plastic crushing device for BOPP film production. In addition to the technical solutions of the above embodiments, it also has the following technical features: the output shaft of the motor 19 is rotatably connected to the L-shaped plate 5.

[0067] Herein, it is ensured that the motor 19 can run normally.

[0068] Embodiment 6:

[0069] The present embodiment provides a plastic crushing device for BOPP film production. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: an isosceles triangle plate 16 is fixedly installed in the inner cavity 3 and directly above two of the crushing rollers 15, and a triangle plate 14 is fixedly installed in the inner cavity 3 and above the other two crushing rollers 15. The cross-sectional size of the triangle plate 14 is a right triangle.

[0070] Here, it is ensured that the raw material can fall between the two crushing rollers 15 rotating in opposite directions under the action of the isosceles triangle plate 16 and the two triangle plates 14 to be crushed, so that the raw material can be crushed more finely.

[0071] It is worth noting that the distance between the centers of the two crushing rollers 13 is greater than the distance between the two triangular plates 2, so as to ensure that the raw materials can fall between the two crushing rollers 13 for crushing.

[0072] Embodiment 7:

[0073] This embodiment provides a plastic crushing device for BOPP film production. In addition to the technical solutions of the above embodiments, it also has the following technical features: the convex strip on the baffle plate 2 12 is plugged into and matched with the baffle plate 1 11.

[0074] Here, it is ensured that the convex strip on the second baffle plate 12 can be inserted into the first baffle plate 11 .

[0075] It is worth noting that: spray devices are provided on both sides of the box body 1, and the spray devices are located just above the isosceles triangle plate 16 and just below between the two crushing rollers 13.

[0076] Working principle: when in use, first put the raw material into the inner cavity 3 and place it on the triangle plate 1 2. Under the action of baffle 1 11 and baffle 2 12, the raw material can be prevented from leaking. Then, start the motor 19, so that the motor 19 is energized and works. Then, the output shaft of the motor 19 will drive the pulley 2 18 to rotate, and the pulley 2 18 will drive one of the large gears 4 to rotate. Under the action of meshing, one of the large gears 4 will drive the other large gear 4 to rotate. Then, the two large gears 4 will respectively drive the two crushing rollers 1 13 to rotate. At the same time, the rotation of the pulley 2 18 will drive the belt 6 to transmit, and the belt 6 will drive the pulley 1 8 to rotate. Then, the pulley 1 8 will drive one of the small gears 9 to rotate. Under the action of meshing, the remaining small gears 9 will rotate together. Then, the small gear 9 will drive the crushing roller 2 15 to rotate. After that, the rocker is turned to make the rocker drive the bidirectional threaded rod 17 to rotate. Under the action of the thread, the bidirectional threaded rod 17 will drive the baffle 11 and the baffle 2 12 to move away from each other, so that the convex strip on the baffle 2 12 is pulled out from the baffle 11, thereby being able to adjust the distance between the baffle 11 and the baffle 2 12, so that the staff can accurately control the discharge speed and prevent the raw materials from being blocked at the feed inlet. Subsequently, under the action of the two triangular plates 1 2, the raw materials will fall between the two crushing rollers 13 for crushing. Subsequently, through the spray device, the raw materials can sink to the crushing roller 2 15 for crushing. Under the action of the two triangular plates 14 and the isosceles triangular plate 16, the raw materials can fall between the two crushing rollers 15 rotating in opposite directions for crushing. Subsequently, the crushed raw materials are discharged from the discharge port of the inner cavity 3 for collection.

[0077] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A plastic crushing device for BOPP film production, characterized in that: include: A box body (1), wherein an inner cavity (3) is formed in the box body (1), and a triangular plate (2) is symmetrically fixedly installed on the inner wall of the inner cavity (3), and two triangular plates (2) are both provided with a slide groove (10), and a baffle plate (11) and a baffle plate (12) are respectively slidably installed in the two slide grooves (10), and a convex strip on the baffle plate (12) extends into the baffle plate (11); A driving assembly, the driving assembly being located in the housing (1) and being used to drive the baffle plate 1 (11) and the baffle plate 2 (12) to move closer to each other or farther away from each other; Two crushing rollers (13), the two crushing rollers (13) are rotatably mounted in the inner cavity (3) and are respectively located directly below the two triangular plates (2), one end of the two crushing rollers (13) passes through one side of the inner cavity (3) to extend to the outside and is fixedly mounted with a large gear (4), and the two large gears (4) are meshed, an L-shaped plate (5) is fixedly mounted on one side of the box body (1) and located above the large gear (4), a motor (19) is fixedly mounted on the side of the L-shaped plate (5) away from the large gear (4), and an output shaft of the motor (19) passes through the L-shaped plate (5) and is coaxially connected to one of the large gears (4); Four crushing rollers (15), each of which is rotatably mounted in the inner cavity (3) and located below the crushing roller (13), one end of each of which passes through one side of the inner cavity (3) and extends to the outside and is fixedly mounted with a pinion (9), and every two adjacent pinions (9) are meshed; A transmission assembly is located on the output shaft of the motor (19) and is used to enable the output shaft of the motor (19) to drive the four pinions (9) to rotate.

2. A plastic crushing device for BOPP film production according to claim 1, characterized in that: The drive assembly comprises: A rectangular groove (20), wherein the rectangular groove (20) is opened in the box body (1) and is located on one side of the inner cavity (3), the rectangular groove (20) is connected to the inner cavity (3) and the slide groove (10), one end of the baffle plate 1 (11) and the baffle plate 2 (12) both extend into the rectangular groove (20), a bidirectional threaded rod (17) is rotatably installed in the rectangular groove (20), and one end of the bidirectional threaded rod (17) passes through one end of the baffle plate 1 (11) and one end of the baffle plate 2 (12) and one side of the rectangular groove (20) and extends to the outside, and a rocker is fixedly installed on one end of the bidirectional threaded rod (17).

3. A plastic crushing device for BOPP film production according to claim 2, characterized in that: One end of the baffle plate 1 (11) and one end of the baffle plate 2 (12) are both threadedly connected to a bidirectional threaded rod (17), and the bidirectional threaded rod (17) is provided with two sections of threads with opposite rotation directions. One end of the baffle plate 2 (12) and one end of the baffle plate 1 (11) are both slidably connected to a rectangular groove (20).

4. A plastic crushing device for BOPP film production according to claim 1, characterized in that: The transmission assembly comprises: A second pulley (18) is fixedly mounted on the output shaft of the motor (19) and is located between the first L-shaped plate (5) and one of the large gears (4). A second L-shaped plate (7) is fixedly mounted on one side of the housing (1) and located below the small gear (9). A first pulley (8) is rotatably mounted on the side of the second L-shaped plate (7) close to the small gear (9). A belt (6) is installed between the first pulley (8) and the second pulley (18) for transmission. One end of the first pulley (8) is coaxially connected to one of the small gears (9).

5. The plastic crushing device for BOPP film production according to claim 1, characterized in that: The output shaft of the motor (19) is rotationally connected to the L-shaped plate (5).

6. The plastic crushing device for BOPP film production according to claim 1, characterized in that: An isosceles triangle plate (16) is fixedly installed in the inner cavity (3) and located directly above two of the second crushing rollers (15); a triangle plate (14) is fixedly installed in the inner cavity (3) and located above the other two second crushing rollers (15); the cross-sectional dimension of the triangle plate (14) is a right triangle.

7. The plastic crushing device for BOPP film production according to claim 1, characterized in that: The convex strip on the second baffle plate (12) is plug-fitted with the first baffle plate (11).

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