Cutting-off module for plastic strips

Abstract

The utility model relates to a cutting module for a plastic strip. Comprising a top beam, a bottom beam, two stand columns, a cutting unit and a supporting unit, wherein the top beam and the bottom beam are transversely arranged and vertically distributed in parallel; the two stand columns are vertically fixed between the top beam and the bottom beam and symmetrically arranged left and right; the driving unit is arranged between the two stand columns, located below the supporting unit and connected with the cutting-off unit and the supporting unit. An adjusting unit is further arranged between the bottom beam and the driving unit; the device further comprises a connection unit. According to the utility model, the cutting board and the wear-resistant strip can be simultaneously driven to move oppositely or oppositely only by the traction motor in the driving unit, so that the structure is simplified and the manufacturing cost is reduced on the premise of ensuring higher cutting speed; in addition, adjustment can be carried out according to the outer diameters of the plastic strips so as to expand the application range, and meanwhile the number of the plastic strips which can be cut off at a time is increased so as to improve the cutting-off efficiency.

Description

Technical Field

[0001] This utility model relates to a cutting module for plastic strips. Background Technology

[0002] Extrusion granulation is a common method for producing plastic granules. Its production process mainly includes: melting plastic, extrusion molding, and cutting and granulation. Extrusion molding involves pushing molten plastic through the screw of an extruder and extruding it from the die of the extruder to form a plastic strip of a certain length. After cooling, it can be cut and granulated to a certain length.

[0003] To ensure cutting efficiency, current plastic strip pelletizing tools require a cylinder on both the upper die and the lower die to shorten the cutting stroke and increase cutting speed. However, this results in a more complex structure and higher manufacturing costs. Furthermore, current plastic strip pelletizing tools can only cut plastic strips with a single outer diameter and cannot be adjusted according to the outer diameter of the plastic strip, thus limiting their applicability. They can also cut a limited number of plastic strips at a time, resulting in lower cutting efficiency. Further improvements are needed. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a cutting module for plastic strips that simplifies the structure and reduces the manufacturing cost while ensuring a fast cutting speed, and also expands the scope of application and improves the cutting efficiency.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a cutting module for plastic strips, characterized in that it includes a top beam and a bottom beam arranged horizontally and distributed in parallel vertically, two vertical columns fixed between the top beam and the bottom beam and arranged symmetrically from left to right, a cutting unit and a support unit arranged between the two columns and distributed vertically from top to bottom, and a driving unit arranged between the two columns and located below the support unit and connected to both the cutting unit and the support unit.

[0006] The cutting unit includes a pressure beam that is horizontally and movably connected between two columns to enable vertical movement, a blade holder strip that is horizontally fixed to the bottom of the pressure beam, and a blade plate that is vertically and detachably fixed to the lower side of the blade holder strip.

[0007] The support unit includes a support beam that is horizontally and movably connected between two columns to enable vertical movement, a pad that is horizontally fixed to the top of the support beam, and a wear-resistant strip that is horizontally fixed to the upper side of the pad and located directly below the blade.

[0008] The drive unit includes two side blocks symmetrically arranged and movably connected to the column, each having the function of vertical movement; a back plate fixed between the two side blocks; a traction shaft that is transversely and rotatably connected between the two side blocks; a traction motor fixed to the back plate; a first pulley concentrically fixed to the rotating shaft of the traction motor; a second pulley concentrically fixed to the traction shaft; and a belt sleeved on the first pulley and the second pulley.

[0009] The drive unit also includes two transmission components arranged symmetrically on the left and right and located on the outside of the two side blocks respectively. The transmission components include a swing arm and a first traction rod and a second traction rod rotatably connected to the two ends of the swing arm respectively. The middle part of the swing arm in the two transmission components is fixed to the two ends of the traction shaft respectively. The ends of the first traction rods in the two transmission components are rotatably connected to the two ends of the pressure beam respectively. The ends of the second traction rods in the two transmission components are rotatably connected to the two ends of the support beam respectively.

[0010] Preferably, an adjustment unit is further provided between the bottom beam and the drive unit. The adjustment unit includes a base plate fixed laterally on the bottom beam, an adjustment motor fixed on the base plate, a first sprocket concentrically fixed on the rotating shaft of the adjustment motor, two internally threaded blocks fixed on the back plate and symmetrically arranged on the left and right, two vertically and rotatably connected to the bottom beam and symmetrically arranged on the left and right, two second sprockets concentrically fixed at the lower ends of the two adjustment screws, and a chain sleeved on the first sprocket and the two second sprockets. The upper ends of the two adjustment screws are respectively inserted and screwed into the two internally threaded blocks.

[0011] Preferably, it further includes a connecting unit, which includes two seat blocks respectively fixed on two columns and both adjustable in position and located above the two side blocks, two seat plates respectively vertically fixed on the two seat blocks, and a guide block fixed between the two seat plates. Each of the two seat plates has a groove on its upper side, and the support unit is movably disposed inside the two grooves.

[0012] Preferably, the connecting unit further includes two guide posts that are vertically inserted into the two seat blocks, and the lower ends of the two guide posts are detachably fixed to the two side blocks.

[0013] Preferably, two pressing assemblies are provided between the two seat plates, located on the front and rear sides of the groove respectively. The pressing assembly includes a positioning beam that is horizontally fixed between the two seat plates and a plurality of pressing rollers that are horizontally and rotatably connected to the positioning beam and arranged from left to right. Each pressing roller is located above the support unit.

[0014] Preferably, at least one horizontally arranged, rotatable material support roller is connected between the two seat plates and located below the support unit.

[0015] Preferably, a material leveling plate and a material distribution plate are fixed between the two base plates, both vertically arranged and distributed front and back respectively, and both located behind the cutting unit. The material distribution plate has a plurality of round holes that are equally spaced from left to right, and the material leveling plate has a plurality of waist-shaped holes that are equally spaced from left to right and all oriented left and right.

[0016] Preferably, the cutting unit further includes two vertically arranged anti-deviation plates symmetrically located on the front and rear sides of the cutter holder bar, and at least two reset components arranged between the pressure beam and the two anti-deviation plates and distributed from left to right. The reset components include a buffer rod vertically inserted in the pressure beam, a connecting block fixed at the lower end of the buffer rod and located between the two anti-deviation plates, a spring sleeved on the buffer rod and located between the pressure beam and the connecting block, and a retaining ring fixed at the upper end of the buffer rod and adjustable in height. The front and rear sides of each connecting block are respectively fixed to the inner walls of the two anti-deviation plates.

[0017] Compared with the prior art, the advantages of this utility model are as follows: This utility model can drive the blade and the wear-resistant strip to move relative to or away from each other using only the traction motor in the drive unit, thereby simplifying the structure and reducing manufacturing costs while ensuring a faster cutting speed; in addition, it can be adjusted according to the outer diameter of the plastic strip to expand the scope of application, and at the same time increase the number of plastic strips that can be cut at one time to improve cutting efficiency. Attached Figure Description

[0018] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings:

[0019] Figure 1 This is a structural diagram of the left front side of this utility model;

[0020] Figure 2 This is a structural diagram of the right rear side of this utility model;

[0021] Figure 3 This is an exploded view of the left front side of the anti-deviation plate and reset assembly of this utility model. Detailed Implementation

[0022] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0024] like Figures 1-3 As shown, a cutting module for plastic strips includes a top beam 2 and a bottom beam 1 arranged horizontally and distributed vertically and parallel to each other, two vertical columns 3 fixed between the top beam 2 and the bottom beam 1 and arranged symmetrically from left to right, a cutting unit 4 and a support unit 5 arranged between the two columns 3 and distributed vertically and parallel to each other, and a driving unit 6 arranged between the two columns 3 and below the support unit 5 and connected to both the cutting unit 4 and the support unit 5.

[0025] The cutting unit 4 includes a pressure beam 41 that is horizontally and movably connected between two columns 3 to have the function of vertical movement, a blade holder strip 42 that is horizontally fixed to the bottom of the pressure beam 41, and a blade plate 43 that is vertically and detachably fixed to the lower side of the blade holder strip 42.

[0026] The support unit 5 includes a support beam 51 that is horizontally and movably connected between two columns 3 to have the function of vertical movement, a pad strip 52 that is horizontally fixed to the top of the support beam 51, and a wear-resistant strip 53 that is horizontally fixed to the upper side of the pad strip 52 and located directly below the blade plate 43.

[0027] The drive unit 6 includes two side blocks 61 that are symmetrically arranged and movably connected to the column 3, each having the function of vertical movement; a back plate 610 fixed between the two side blocks 61; a traction shaft 62 that is transversely and rotatably connected between the two side blocks 61; a traction motor 63 fixed on the back plate 610; a first pulley 64 concentrically fixed on the rotating shaft of the traction motor 63; a second pulley 65 concentrically fixed on the traction shaft 62; and a belt 66 sleeved on the first pulley 64 and the second pulley 65.

[0028] The drive unit 6 also includes two transmission components that are symmetrically arranged on the left and right and located on the outside of the two side blocks 61 respectively. The transmission components include a swing rod 67 and a first traction rod 68 and a second traction rod 69 that are rotatably connected to the two ends of the swing rod 67 respectively. The middle part of the swing rod 67 in the two transmission components is fixed to the two ends of the traction shaft 62 respectively. The ends of the first traction rod 68 in the two transmission components are rotatably connected to the two ends of the pressure beam 41 respectively. The ends of the second traction rod 69 in the two transmission components are rotatably connected to the two ends of the support beam 51 respectively.

[0029] An adjustment unit 7 is also provided between the bottom beam 1 and the drive unit 6. The adjustment unit 7 includes a base plate 71 fixed horizontally on the bottom beam 1, an adjustment motor 72 fixed on the base plate 71, a first sprocket 73 concentrically fixed on the rotating shaft of the adjustment motor 72, two internal threaded blocks 75 fixed on the back plate 610 and symmetrically arranged on the left and right, two vertical and rotatable adjustment screws 74 connected to the bottom beam 1 and symmetrically arranged on the left and right, two second sprockets 76 concentrically fixed on the lower ends of the two adjustment screws 74, and a chain 77 sleeved on the first sprocket 73 and the two second sprockets 76. The upper ends of the two adjustment screws 74 are respectively inserted and screwed into the two internal threaded blocks 75.

[0030] A cutting module for a plastic strip further includes a connecting unit 8. The connecting unit 8 includes two seat blocks 81 that are respectively fixed on two columns 3 and can be adjusted up and down and are located above two side blocks 61, two seat plates 82 that are respectively vertically fixed on the two seat blocks 81, and a guide block 83 fixed between the two seat plates 82. Each of the two seat plates 82 has a groove 821 on its upper side, and a support unit 5 is movably disposed inside the two grooves 821.

[0031] The connecting unit 8 also includes two guide posts 84 that are vertically inserted into the two seat blocks 81 respectively, and the lower ends of the two guide posts 84 are detachably fixed to the two side blocks 61 respectively.

[0032] Two pressing components are also provided between the two seat plates 82, located on the front and rear sides of the groove 821 respectively. The pressing components include a positioning beam 85 that is horizontally fixed between the two seat plates 82 and a plurality of pressing rollers 86 that are horizontally and rotatably connected to the positioning beam 85 and arranged from left to right. Each pressing roller 86 is located above the support unit 5.

[0033] At least one horizontally arranged, rotatable material support roller 87 is connected between the two seat plates 82 and located below the support unit 5.

[0034] Between the two base plates 82, there are also fixed material leveling plates 10 and material distribution plates 9, which are both vertically arranged and distributed in front and behind the cutting unit 4. The material distribution plate 9 has a number of round holes 91 that are evenly distributed from left to right. The material leveling plate 10 has a number of waist-shaped holes 101 that are evenly distributed from left to right and all run left and right.

[0035] The cutting unit 4 also includes two vertically arranged anti-deviation plates 44 symmetrically located on the front and rear sides of the cutter holder bar 42, and at least two reset components arranged between the pressure beam 41 and the two anti-deviation plates 44 and distributed from left to right. The reset components include a buffer rod 45 vertically inserted in the pressure beam 41, a connecting block 46 fixed at the lower end of the buffer rod 45 and located between the two anti-deviation plates 44, a spring 47 sleeved on the buffer rod 45 and located between the pressure beam 41 and the connecting block 46, and a retaining ring 48 fixed at the upper end of the buffer rod 45 and adjustable in height. The front and rear sides of each connecting block 46 are fixed to the inner walls of the two anti-deviation plates 44 respectively.

[0036] The adjustment unit 7 also includes a base block 78 fixed on the base plate 71 and whose fixed position can be adjusted laterally, and a tension sprocket 79 rotatably connected to the base block 78, the tension sprocket 79 being engaged with the outside of one side of the chain 77.

[0037] Working principle:

[0038] The multiple plastic strips, after being stretched and shaped, are laid flat and passed from back to front through each round hole 91 and each waist-shaped hole 101. They are then conveyed forward from above each material support roller 87, and then pass from below the multiple pressure rollers 86 on the positioning beam 85 in each pressure assembly between the blade 43 in the cutting unit 4 and the wear-resistant strip 53 in the support unit 5.

[0039] Then, the traction motor 63 in the drive unit 6 is started to rotate its rotating shaft, which in turn drives the traction shaft 62 to rotate through the first pulley 64, the second pulley 65 and the belt 66, thereby driving the swing arm 67 in the two transmission components to rotate at a certain angle. Then, the pressure beam 41 is driven to move vertically downward through the first traction rod 68, and the support beam 51 is driven to move vertically upward through the second traction rod 69. Thus, the blade 43 and the wear-resistant strip 53 work together to cut a small section from each plastic strip to form plastic granules. Then, the rotating shaft of the drive traction motor 63 is flipped to drive the blade 43 and the wear-resistant strip 53 to move back to their original positions in the same way.

[0040] When the pressure beam 41 moves vertically downward, it will drive the two anti-deviation plates 44 to move downward synchronously. The lower edges of the two anti-deviation plates 44 will contact the plastic strip before the blade 43 to press the plastic strip. However, when the pressure beam 41 continues to move downward, the two anti-deviation plates 44 will use the connecting block 46 in each reset assembly to force the buffer rod 45 in each reset assembly to move upward and compress each spring 47, so that the pressure beam 41 can continue to move downward and cut the plastic strip with the help of the blade 43.

[0041] If the outer diameter of the plastic strip changes, the distance between the blade 43 and the wear-resistant strip 53 can be adjusted. During adjustment, the adjustment motor 72 in the adjustment unit 7 is started to rotate its rotating shaft. Then, the first sprocket 73, the second sprocket 76 and the chain 77 drive the two adjustment screws 74 to rotate in the same direction. Based on the principle of spiral connection, the back plate 610 is driven to move upward or move in relation to each other. Then, the two side blocks 61 drive the entire drive unit 6 to move upward or move in relation to each other.

[0042] Two horizontally distributed and parallel sliding columns are interspersed in the guide block 83 of the connecting unit 8. The present invention can be installed on the two sliding columns by means of the connecting unit 8. In this way, the front and back position of the present invention can be adjusted, thereby realizing the adjustment of the cutting length of the granular material.

[0043] This invention can drive the blade 43 and the wear-resistant strip 53 to move relative to or away from each other using only the traction motor 63 in the drive unit 6. This simplifies the structure and reduces manufacturing costs while ensuring a faster cutting speed. In addition, it can be adjusted according to the outer diameter of the plastic strip to expand the range of applications and increase the number of plastic strips that can be cut at one time to improve cutting efficiency.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cutting module for plastic strips, characterized in that, It includes a top beam and a bottom beam arranged horizontally and distributed vertically and parallel to each other, two vertical columns fixed between the top beam and the bottom beam and arranged symmetrically from left to right, a cutting unit and a support unit located between the two columns and distributed vertically and parallel to each other, and a drive unit located between the two columns and below the support unit and connected to both the cutting unit and the support unit. The cutting unit includes a pressure beam that is horizontally and movably connected between two columns to enable vertical movement, a blade holder strip that is horizontally fixed to the bottom of the pressure beam, and a blade plate that is vertically and detachably fixed to the lower side of the blade holder strip. The support unit includes a support beam that is horizontally and movably connected between two columns to enable vertical movement, a pad that is horizontally fixed to the top of the support beam, and a wear-resistant strip that is horizontally fixed to the upper side of the pad and located directly below the blade. The drive unit includes two side blocks symmetrically arranged and movably connected to the column, each having the function of vertical movement; a back plate fixed between the two side blocks; a traction shaft that is transversely and rotatably connected between the two side blocks; a traction motor fixed to the back plate; a first pulley concentrically fixed to the rotating shaft of the traction motor; a second pulley concentrically fixed to the traction shaft; and a belt sleeved on the first pulley and the second pulley. The drive unit also includes two transmission components arranged symmetrically on the left and right and located on the outside of the two side blocks respectively. The transmission components include a swing arm and a first traction rod and a second traction rod rotatably connected to the two ends of the swing arm respectively. The middle part of the swing arm in the two transmission components is fixed to the two ends of the traction shaft respectively. The ends of the first traction rods in the two transmission components are rotatably connected to the two ends of the pressure beam respectively. The ends of the second traction rods in the two transmission components are rotatably connected to the two ends of the support beam respectively.

2. The cutting module for a plastic strip according to claim 1, characterized in that, An adjustment unit is also provided between the bottom beam and the drive unit. The adjustment unit includes a base plate fixed horizontally on the bottom beam, an adjustment motor fixed on the base plate, a first sprocket concentrically fixed on the rotating shaft of the adjustment motor, two internal threaded blocks fixed on the back plate and symmetrically arranged on the left and right, two vertical and rotatable adjustment screws connected to the bottom beam and symmetrically arranged on the left and right, two second sprockets concentrically fixed at the lower ends of the two adjustment screws, and a chain sleeved on the first sprocket and the two second sprockets. The upper ends of the two adjustment screws are respectively inserted and screwed into the two internal threaded blocks.

3. The cutting module for a plastic strip according to claim 1, characterized in that, It also includes a connecting unit, which includes two seat blocks that are fixed on two columns and can be adjusted up and down and are located above the two side blocks, two seat plates that are vertically fixed on the two seat blocks, and a guide block fixed between the two seat plates. Each of the two seat plates has a groove on its upper side, and the support unit is movably disposed inside the two grooves.

4. The cutting module for a plastic strip according to claim 3, characterized in that, The connecting unit also includes two guide posts that are vertically inserted into the two seat blocks, and the lower ends of the two guide posts are detachably fixed to the two side blocks.

5. The cutting module for a plastic strip according to claim 3, characterized in that, Two pressing assemblies are also provided between the two seat plates, located on the front and rear sides of the groove respectively. The pressing assembly includes a positioning beam that is horizontally fixed between the two seat plates and a plurality of pressing rollers that are horizontally and rotatably connected to the positioning beam and arranged from left to right. Each pressing roller is located above the support unit.

6. The cutting module for a plastic strip according to claim 3, characterized in that, At least one horizontally arranged, rotatable material support roller is connected between the two seat plates and located below the support unit.

7. The cutting module for a plastic strip according to claim 3, characterized in that, Between the two base plates, there are also a material leveling plate and a material distribution plate, which are both vertically arranged and distributed in front and behind the cutting unit. The material distribution plate has a number of round holes that are equally spaced from left to right. The material leveling plate has a number of waist-shaped holes that are equally spaced from left to right and all run left and right.

8. The cutting module for a plastic strip according to claim 1, characterized in that, The cutting unit also includes two vertically arranged anti-deviation plates symmetrically located on the front and rear sides of the cutter holder bar, and at least two reset components arranged between the pressure beam and the two anti-deviation plates and distributed from left to right. The reset components include a buffer rod vertically inserted in the pressure beam, a connecting block fixed at the lower end of the buffer rod and located between the two anti-deviation plates, a spring sleeved on the buffer rod and located between the pressure beam and the connecting block, and a retaining ring fixed at the upper end of the buffer rod and adjustable in height. The front and rear sides of each connecting block are fixed to the inner walls of the two anti-deviation plates respectively.

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