A slitting assembly for shrink film cutting

Abstract

The utility model discloses a kind of slitting components for shrink film cutting, belong to shrink film cutting technical field, including pivot, sliding sleeve, cutting wheel and locking positioning piece, sliding sleeve is sleeved on pivot, sliding sleeve and pivot are slidably clamped and embedded connection, the end portion of sliding sleeve is equipped with mounting groove, the center of cutting wheel is connected with connecting sleeve, connecting sleeve is slidably sleeved on pivot, connecting sleeve is connected with mounting groove, locking positioning piece is threadedly connected with sliding sleeve, the outer wall of pivot is abutted after one end of locking positioning piece passes through connecting sleeve.The utility model discloses a kind of slitting components for shrink film cutting, realize the flexible adjustment of cutting wheel position, and by setting locking positioning piece, sliding sleeve is locked on pivot on one hand, cutting wheel is locked on sliding sleeve on the other hand, it is simple and convenient to operate, greatly improve the replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shrink film cutting technology, and in particular, to a slitting assembly for shrink film cutting. Background Technology

[0002] Shrink film is a packaging material that tightly wraps products by heating and shrinking. It has functions such as dustproofing, moisture protection, protection and display. It is mainly divided into PE, POF and PVC types and is widely used in food, daily necessities, electronics and electrical appliances and other industries.

[0003] The processing of shrink film involves several steps, including batching in an internal mixer, producing masterbatch in a granulator, vibrating sieving of the masterbatch, extrusion, winding, and foaming. The extrusion process involves heating the plastic raw material to a molten state in an extruder, then passing it through a die to form a thin plastic sheet. After extrusion, to ensure the regularity of the wound shrink film roll, a cutting device is typically installed between the extruder and the winding unit. This cutting device includes a support roller and a cutting wheel positioned above it. During operation, the shrink film moves along the support roller, and the cutting wheel cuts both sides of the shrink film to obtain a uniform width. After a period of use, the cutting wheel needs periodic replacement due to wear. Because the cutting wheel and the shaft connecting to the drive motor are integrated, replacing the cutting wheel requires replacing the entire structure of the cutting wheel and shaft, increasing material consumption. Furthermore, the position of the cutting wheel cannot be flexibly adjusted, making it difficult to adapt to the different widths of the shrink film to be cut. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned problems existing in the prior art, a shrink film cutting slitting assembly that is easy to assemble and disassemble and whose cutting wheel position can be flexibly adjusted is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a slitting assembly for cutting shrink film, including a rotating shaft, a sliding sleeve, a cutting wheel, and a locking and positioning component. The sliding sleeve is sleeved on the rotating shaft and is slidably engaged with the rotating shaft. An installation groove is provided at the end of the sliding sleeve. A connecting sleeve is connected to the center of the cutting wheel. The connecting sleeve is slidably sleeved on the rotating shaft and is engaged with the installation groove. The locking and positioning component is threadedly connected to the sliding sleeve. One end of the locking and positioning component passes through the connecting sleeve and abuts against the outer wall of the rotating shaft.

[0006] Furthermore, the sliding sleeve has a threaded hole on its side wall, which communicates with the mounting groove, and the connecting sleeve has a through hole on its side wall, which corresponds to the threaded hole.

[0007] Furthermore, the locking and positioning component includes a threaded section and a smooth rod section connected to each other. The threaded section is threadedly connected to a threaded hole, and one end of the smooth rod section passes through a through hole and abuts against the outer wall of the rotating shaft.

[0008] Furthermore, the edge of the smooth rod section away from the threaded section is provided with a chamfered structure.

[0009] Furthermore, the locking and positioning component also includes a nut, which is fixedly installed at the end of the threaded section away from the polished rod section.

[0010] Furthermore, the through holes are multiple and evenly distributed circumferentially on the side wall of the connecting sleeve, and the threaded hole can be aligned and connected with any one of the through holes.

[0011] Furthermore, a magnetic component is fixedly installed on the bottom wall of the mounting groove, and a magnetic suction component is fixedly installed at the end of the connecting sleeve. The magnetic suction component corresponds to the magnetic component, and the magnetic suction component can magnetically attract the magnetic component.

[0012] Furthermore, the rotating shaft is a columnar structure with a regular hexagonal cross-section, and the sliding sleeve is a circular sleeve-shaped structure with a regular hexagonal hole in the center. The sliding sleeve is fitted onto the outside of the rotating shaft through the regular hexagonal hole.

[0013] Furthermore, there are two sliding sleeves, which are located on opposite sides of the rotating shaft. There are two cutting wheels, and one cutting wheel is locked onto one of the sliding sleeves by a locking and positioning member.

[0014] The beneficial effects of this utility model are as follows: When the cutting wheel of the slitting assembly for shrink film cutting is worn, the connection between the rotating shaft and the drive motor can be disconnected first, and then the locking positioning part can be unscrewed to separate the connecting sleeve from the locking positioning part. At this time, the connecting sleeve can be slid along the direction of the rotating shaft, and finally the connecting sleeve and the cutting wheel can be removed from the end of the rotating shaft, and then a new cutting wheel can be installed. When it is necessary to adjust the position of the cutting wheel, simply loosen the locking positioning part, then slide the sliding sleeve along the length direction of the rotating shaft to the appropriate position, and then tighten the locking positioning part. When tightening the locking positioning part, the sliding sleeve is locked on the rotating shaft on the one hand, and the cutting wheel is also locked on the sliding sleeve on the other hand. The operation is simple and convenient, and the replacement efficiency is greatly improved. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a perspective view of the slitting assembly for cutting shrink film according to this utility model;

[0017] Figure 2 yes Figure 1The front view of the slitting assembly for cutting shrink film is shown.

[0018] Figure 3 yes Figure 1 An exploded view of the sliding sleeve and cutting wheel in the slitting assembly for cutting shrink film shown;

[0019] Figure 4 yes Figure 3 A stereoscopic view from another perspective;

[0020] Figure 5 yes Figure 2 The slitting assembly for cutting shrink film shown is a cross-sectional view along AA.

[0021] In the diagram: 1. Rotating shaft, 11. Connecting shaft, 2. Sliding sleeve, 21. Regular hexagonal hole, 22. Mounting groove, 23. Magnetic component, 24. Threaded hole, 3. Cutting wheel, 31. Connecting sleeve, 32. Magnetic suction component, 33. Through hole, 4. Locking and positioning component, 41. Threaded section, 42. Smooth rod section, 43. Nut. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] Please see Figures 1-5 This invention provides a slitting assembly for cutting shrink film, including a rotating shaft 1, a sliding sleeve 2, a cutting wheel 3, and a locking and positioning component 4. The rotating shaft 1 is fixedly connected to the output shaft of a drive motor. The sliding sleeve 2 is slidably fitted onto the outside of the rotating shaft 1. The cutting wheel 3 is detachably mounted on the sliding sleeve 2. The locking and positioning component 4 is mounted on the sliding sleeve 2, locking the sliding sleeve 2 to the rotating shaft 1 and the cutting wheel 3 to the sliding sleeve 2. During operation, the drive motor is started, causing the rotating shaft 1 to rotate, which in turn causes the sliding sleeve 2 and the cutting wheel 3 to rotate simultaneously. As the shrink film moves below the cutting wheel 3, it can be cut by the cutting wheel 3.

[0024] In this embodiment, there are two sliding sleeves 2, located on opposite sides of the rotating shaft 1. There are also two cutting wheels 3, with one cutting wheel 3 locked to one of the sliding sleeves 2 by a locking and positioning element 4. During operation, the vertical distance between the two cutting wheels 3 is the width of the resulting shrink film. In practical use, the cutting wheels 3 on both sides can remove the scrap material from both sides of the shrink film. Of course, in other embodiments, only one cutting wheel 3 may be provided on the rotating shaft 1. In this case, the cutting wheel 3 cuts the shrink film from the middle, thereby cutting the wider shrink film into two narrower shrink films. The number of cutting wheels 3 can be set according to the user's needs and is not limited here.

[0025] The sliding sleeve 2 and the rotating shaft 1 are slidably engaged. This slidable engagement means that the sliding sleeve 2 can slide along the length of the rotating shaft 1, but cannot rotate relative to the rotating shaft 1. In this embodiment, the rotating shaft 1 is a columnar structure with a regular hexagonal cross-section, and the sliding sleeve 2 is a circular sleeve structure. A regular hexagonal hole 21 is provided in the center of the sliding sleeve 2. The sliding sleeve 2 fits onto the outside of the rotating shaft 1 through the regular hexagonal hole 21, thus ensuring that the rotating shaft 1 rotates synchronously with the sliding sleeve 2 when driven by the drive motor. In other embodiments, the cross-section of the rotating shaft 1 can also be a triangle, rectangle, or other regular polygonal structure, or an ellipse or other non-circular structure; this is not limited here.

[0026] A mounting groove 22 is formed at the center of one end of the sliding sleeve 2 along the axial direction of the sliding sleeve 2. The mounting groove 22 communicates with the regular hexagonal hole 21. A connecting sleeve 31 is fixedly inserted through the center of the cutting wheel 3. The connecting sleeve 31 has a hollow structure and is slidably connected to the rotating shaft 1. The connecting sleeve 31 and the mounting groove 22 cooperate with each other, and the connecting sleeve 31 is fitted onto the outside of the rotating shaft 1. The shapes of the connecting sleeve 31 and the mounting groove 22 match each other. When the connecting sleeve 31 is inserted into the mounting groove 22, the outer wall of the connecting sleeve 31 fits against the groove wall of the mounting groove 22. In this embodiment, the hollow structure of the connecting sleeve 31 is a regular hexagonal structure, which also makes the connecting sleeve 31 and the rotating shaft 1 slidably snap-fit ​​connected. At the same time, when the rotating shaft 1 rotates, it can drive the connecting sleeve 31 to rotate synchronously.

[0027] In one specific embodiment, a magnetic component 23 is fixedly installed on the bottom wall of the mounting groove 22, and a magnetic attracting component 32 is fixedly installed on the end of the connecting sleeve 31. The magnetic attracting component 32 corresponds to the magnetic component 23. The magnetic component 23 is made of ferromagnetic material (e.g., iron, chromium, nickel, etc.), and the magnetic attracting component 32 is a magnet that can magnetically attract the magnetic component 23. During installation, the end of the connecting sleeve 31 with the magnetic attracting component 32 is gradually inserted into the mounting groove 22. When the magnetic attracting component 32 approaches the magnetic component 23, it magnetically attracts the magnetic component 23, allowing the connecting sleeve 31 to quickly move into place within the mounting groove 22, facilitating the installation operation.

[0028] The locking and positioning component 4 is installed on the sliding sleeve 2. After passing through the wall of the sliding sleeve 2 and the wall of the connecting sleeve 31, the locking and positioning component 4 abuts against the outer wall of the rotating shaft 1. The locking and positioning component 4 is threadedly connected to the sliding sleeve 2. During installation, the locking and positioning component 4 is rotated, gradually screwing itself into the sliding sleeve 2. The threaded connection between the locking and positioning component 4 and the sliding sleeve 2 ensures that when one end of the locking and positioning component 4 abuts against the rotating shaft 1, the sliding sleeve 2 is pressed and fixed onto the rotating shaft 1, achieving a fixed connection between the sliding sleeve 2 and the rotating shaft 1. Simultaneously, the locking and positioning component 4 penetrates the connecting sleeve 31, preventing the connecting sleeve 31 from moving along the length of the rotating shaft 1, thus preventing the cutting wheel 3 from easily separating from the sliding sleeve 2 and ensuring the installation stability of the cutting wheel 3.

[0029] In this embodiment, the side wall of the sliding sleeve 2 is provided with a threaded hole 24 for mounting the locking and positioning component 4. The threaded hole 24 is connected to the mounting groove 22. The side wall of the connecting sleeve 31 is provided with a through hole 33, which is a circular smooth hole. When the connecting sleeve 31 and the mounting groove 22 are installed in place, the through hole 33 and the threaded hole 24 are aligned and connected to facilitate the installation of the locking and positioning component 4.

[0030] The locking and positioning component 4 includes a threaded section 41 and a smooth section 42 connected to each other. The threaded section 41 and the smooth section 42 are coaxially arranged. The threaded section 41 is threadedly connected to the threaded hole 24, and the smooth section 42 cooperates with the through hole 33. The smooth section 42 is slidable relative to the through hole 33. When the locking and positioning component 4 is installed in place, the end of the smooth section 42 away from the threaded section 41 abuts against the outer wall of the rotating shaft 1. In addition, the edge of the smooth section 42 away from the threaded section 41 is provided with a chamfered structure, which facilitates the quick insertion of the smooth section 42 into the through hole 33. In this embodiment, there are multiple through holes 33, which are evenly distributed circumferentially on the side wall of the connecting sleeve 31, so that when the connecting sleeve 31 is installed at any angle, the threaded hole 24 can be aligned and connected with one of the through holes 33, which facilitates the quick installation of the connecting sleeve 31.

[0031] In addition, the locking and positioning component 4 also includes a nut 43, which is fixedly installed on the threaded section 41 at the end away from the smooth rod section 42. The nut 43 allows the user to rotate the locking and positioning component 4 using tools such as a wrench.

[0032] In a preferred embodiment, the axis of the locking positioning member 4 is perpendicular to the abutting surface of the rotating shaft 1 (i.e., the surface on the rotating shaft 1 that contacts one end of the smooth rod section 42) to ensure that the locking positioning member 4 is subjected to balanced force.

[0033] In this embodiment, a connecting shaft 11 is fixedly connected to the end of the rotating shaft 1. The connecting shaft 11 is a cylindrical structure and is used to be fixedly connected to the output shaft of the drive motor so that the drive motor can drive the rotating shaft 1 to rotate. In specific implementation, the connecting shaft 11 can be connected to the drive motor through a coupling to realize the detachable function of the connecting shaft 11 so as to replace the cutting wheel 3.

[0034] The slitting assembly for shrink film cutting of this utility model allows for easy removal of the connection between the rotating shaft 1 and the drive motor when the cutting wheel 3 is worn. Then, the locking and positioning component 4 is unscrewed, disengaging the connecting sleeve 31 from the locking and positioning component 4. The connecting sleeve 31 can then slide along the direction of the rotating shaft 1, and finally, the connecting sleeve 31 along with the cutting wheel 3 can be removed from the end of the rotating shaft 1. A new cutting wheel 3 can then be installed. When the position of the cutting wheel 3 needs to be adjusted, simply loosen the locking and positioning component 4, slide the sliding sleeve 2 along the length of the rotating shaft 1 to the appropriate position, and then tighten the locking and positioning component 4. Tightening the locking and positioning component 4 locks the sliding sleeve 2 onto the rotating shaft 1 and the cutting wheel 3 onto the sliding sleeve 2. This simple and convenient operation greatly improves replacement efficiency.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A slitting assembly for cutting a shrink film, characterized by: The device includes a rotating shaft, a sliding sleeve, a cutting wheel, and a locking and positioning component. The sliding sleeve is fitted onto the rotating shaft and is slidably engaged with it. An installation groove is provided at the end of the sliding sleeve. A connecting sleeve is connected to the center of the cutting wheel. The connecting sleeve is slidably fitted onto the rotating shaft and is engaged with the installation groove. The locking and positioning component is threadedly connected to the sliding sleeve. One end of the locking and positioning component passes through the connecting sleeve and abuts against the outer wall of the rotating shaft.

2. The shrink film slitting assembly of claim 1 wherein: The sliding sleeve has a threaded hole on its side wall, which communicates with the mounting groove. The connecting sleeve has a through hole on its side wall, which corresponds to the threaded hole.

3. The shrink film slitting assembly of claim 2, wherein: The locking and positioning component includes a threaded section and a smooth rod section that are connected to each other. The threaded section is threadedly connected to a threaded hole, and one end of the smooth rod section passes through a through hole and abuts against the outer wall of the rotating shaft.

4. The shrink film slitting assembly of claim 3, wherein: The edge of the smooth rod section away from the threaded section is chamfered.

5. The slitting assembly for shrink film cutting as described in claim 3, characterized in that: The locking and positioning component also includes a nut, which is fixedly installed at the end of the threaded section away from the polished rod section.

6. The slitting assembly for shrink film cutting as described in claim 2, characterized in that: The through holes are multiple and evenly distributed circumferentially on the side wall of the connecting sleeve, and the threaded hole can be aligned and connected with any one of the through holes.

7. The slitting assembly for shrink film cutting as described in claim 1, characterized in that: A magnetic component is fixedly installed on the bottom wall of the mounting groove, and a magnetic suction component is fixedly installed at the end of the connecting sleeve. The magnetic suction component corresponds to the magnetic component, and the magnetic suction component can magnetically attract the magnetic component.

8. The slitting assembly for shrink film cutting as described in claim 1, characterized in that: The rotating shaft is a columnar structure with a regular hexagonal cross-section, and the sliding sleeve is a circular sleeve structure with a regular hexagonal hole in the center. The sliding sleeve is fitted onto the outside of the rotating shaft through the regular hexagonal hole.

9. The slitting assembly for shrink film cutting as described in claim 1, characterized in that: The slide sleeve has two parts, which are located on opposite sides of the rotating shaft. The cutting wheel has two parts, and one of the cutting wheels is locked onto one of the slide sleeves by a locking and positioning element.

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