A slitting knife assembly for a packaging film slitter

Abstract

The utility model belongs to packaging film processing technical field especially is a kind of slitting knife subassembly for packaging film slitting machine, including support frame, the support frame is installed with support plate, horizontal bar is installed between the support plate, the horizontal bar outer wall slidingly connects with blade clamp, the blade clamp is installed with slice, the support plate one side is installed with positioning rod, the positioning rod is equipped with scale line, two fixed blocks are slidably connected on the positioning rod, the fixed block bottom end is installed with the width measuring rod supported with the outer end of packaging film, the blade clamp and the fixed block are connected between by telescopic link;By the scale line on positioning rod and the width measuring rod and fixed block that can slide and the two ends of package film, both can adapt to the packaging film of different width, can directly read actual width, need not additional measuring tool, the blade clamp is connected with the insertion hole by the insertion rod A and the insertion rod B of telescopic link, to fix all blade clamp in order with the positioning component as reference.

Description

Technical Field

[0001] This utility model belongs to the field of packaging film processing technology, and specifically relates to a slitting blade assembly for a packaging film slitting machine. Background Technology

[0002] In the production and processing of packaging film, the slitting process is a crucial link connecting roll film forming and subsequent bag making. Its slitting accuracy directly affects the finished product quality, subsequent processing efficiency, and material loss rate. If the slitting size deviation is too large, it may lead to the scrapping of the entire batch of products, resulting in serious economic losses. When adapting to packaging films of different widths, existing slitting blade assemblies require the actual width of the packaging film to be measured individually using external measuring tools such as tape measures and rulers. The measurement process is cumbersome and prone to human error. At the same time, there is a lack of convenient adaptation and adjustment structures for packaging films of different widths, resulting in poor operational flexibility. In terms of adjusting the blade spacing, traditional assemblies mostly use manual positioning of each blade. Operators need to mark and adjust the position of each blade according to the measurement results, which is not only time-consuming and labor-intensive, but also prone to inconsistencies in the spacing between adjacent blades due to manual operation deviations, resulting in large errors in the width of the slitting packaging film and poor product consistency. Utility Model Content

[0003] To address the above problems, the purpose of this utility model is to provide a slitting blade assembly for a packaging film slitting machine, thereby solving the aforementioned issues.

[0004] To achieve the above objectives, a slitting blade assembly for a packaging film slitting machine includes a support frame, a support plate mounted on the support frame, a horizontal bar installed between the support plates, a blade clamp slidably connected to the outer wall of the horizontal bar, a slicing blade mounted on the blade clamp, a positioning rod mounted on one side of the support plate, a scale line on the positioning rod, two fixing blocks slidably connected to the positioning rod, a width measuring rod supporting the outer end of the packaging film mounted at the bottom end of the fixing blocks, the blade clamp and the fixing blocks being connected by a telescopic rod, an insert rod B mounted at one end of the telescopic rod, and an insert rod A slidably connected to the other end of the telescopic rod, an insertion hole being provided on the fixing block, a positioning hole being provided on the blade clamp, and insert rods A and B being slidably connected to the blade clamp and the insertion hole.

[0005] Preferably, two support rollers for supporting the packaging film are installed between the support frames, and the slice is located between the two support rollers.

[0006] Preferably, a fixing frame is installed between the support plates, a slider is slidably connected to the outer wall of the fixing frame, a slide is slidably connected between the support plates, a docking block is slidably connected to the slide, a limiting rod is installed at the bottom of the docking block and slidably connected to the slider, and the limiting rod is engaged with the top of the blade clamp.

[0007] Preferably, the support plate has a slide groove for sliding connection with both ends of the slide, and the inner wall of the slide groove and the slide are connected by a spring.

[0008] Preferably, the blade holder has a limiting hole at the top, and a screw is threaded onto the slider, with one end of the screw corresponding to one side of the fixing frame.

[0009] This utility model has the following beneficial effects: By using the scale lines on the positioning rod and the sliding width measuring rod and fixing block to fit the two ends of the packaging film, it can adapt to packaging films of different widths and directly read the actual width without the need for additional measuring tools. With the help of the telescopic rod, the blade clamps are connected to the insertion holes through the insertion rods A and B. All blade clamps are fixed in sequence with the positioned parts as the reference, avoiding the manual deviation of adjusting the cutter one by one in the traditional way, ensuring that the spacing between multiple cuts is consistent, and the width error of the packaging film after cutting is small. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the cutting blade assembly in this utility model; Figure 3 This is a schematic diagram showing the connection between the telescopic rod and the blade clamp in this utility model; Figure 4 This is a three-dimensional structural diagram of the positioning rod in this utility model.

[0011] In the diagram: 1. Support frame; 11. Support roller; 2. Support plate; 21. Horizontal bar; 22. Blade clamp; 221. Limiting hole; 222. Positioning hole; 23. Slice; 24. Fixing frame; 25. Slider; 251. Screw; 26. Carriage; 261. Slide groove; 262. Spring; 27. Connecting block; 271. Limiting rod; 3. Positioning rod; 31. Width measuring rod; 32. Fixing block; 33. Insertion hole; 34. Telescopic rod; 35. Insertion rod A; 351. Insertion rod B. Detailed Implementation

[0012] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0013] Example 1: like Figure 1As shown in Figure 4, this utility model provides the following technical solution: it includes a support frame 1, a support plate 2 installed on the support frame 1, a horizontal rod 21 installed between the support plates 2, a blade clamp 22 slidably connected to the outer wall of the horizontal rod 21, a blade clamp 23 installed on the blade clamp 22, a positioning rod 3 installed on one side of the support plate 2, a scale line provided on the positioning rod 3, two fixing blocks 32 slidably connected to the positioning rod 3, a width measuring rod 31 supporting the outer end of the packaging film installed at the bottom end of the fixing block 32, the blade clamp 22 and the fixing block 32 are connected by a telescopic rod 34, an insertion rod B351 is installed at one end of the telescopic rod 34, an insertion rod A35 is slidably connected to the other end of the telescopic rod 34, an insertion hole 33 is opened on the fixing block 32, a positioning hole 222 is opened on the blade clamp 22, and the insertion rod A35 and the insertion rod B351 are slidably connected to the blade clamp 22 and the insertion hole 33.

[0014] In this implementation scheme: The device is mounted on the slitting machine via a support frame 1, positioned above the packaging film conveying roller. Two support plates 2 are symmetrically mounted on the support frame 1, and a horizontal rod 21 is fixedly mounted horizontally between the two support plates 2. Blade clamps 22 are slidably fitted onto the outer wall of the horizontal rod 21. Each blade clamp 22 has a blade 23 fixedly mounted at its bottom by bolts. A positioning rod 3 is horizontally mounted on the side of the support plate 2 near the packaging film feed. The outer wall of the positioning rod 3 is engraved with scale lines, and two fixing blocks 32 are slidably connected to the positioning rod 3. Each fixing block 32 has a width measuring rod vertically welded to its bottom end. The inner side of the width measuring rod 31 is attached to the outer end of the packaging film. The blade clamp 22 and the fixing block 32 are connected by a telescopic rod 34. One end of the telescopic rod 34 is fixedly installed with a plug rod B351, and the other end has a slidable plug rod A35. The fixing block 32 has a socket 33 that matches the plug rod B351. The blade clamp 22 has a positioning hole 222 that matches the plug rod A35. The plug rod A35 and the plug rod B351 are slidably inserted into the positioning hole 222 and the socket 33, respectively. In use, the two width measuring rods 31 are pushed to slide along the positioning rod 3, so that the two width measuring rods 31... The inner sides of the packaging film are respectively attached to both ends. The actual width of the packaging film is directly read through the scale line on the positioning rod 3. According to the required number of equally spaced cuts, the telescopic rod 34 is stretched or contracted so that the length of the telescopic rod 34 is consistent with the width of the packaging film after a single cut. The insert rod B351 is inserted into the insertion hole 33 of the fixing block 32, and the insert rod A35 is inserted into the positioning hole 222 of the first blade clamp 22, thus fixing the position of the first blade clamp 22. Then, the remaining blade clamps 22 are slid along the horizontal rod 21 and inserted into the positioning hole 22 of the previous blade clamp 22 through the insert rod B351. Within 2 seconds, all blade clamps 22 are positioned at equal intervals to ensure that the spacing of the slices 23 matches the slitting requirements, making the device more versatile. The width measuring rod 31 can slide freely along the positioning rod 3. Whether the packaging film is narrow or wide, the width can be accurately measured by attaching both ends. The positioning of the blade clamps 22 is continuous and without complicated steps. This method, which uses the positioned components as a reference, avoids the manual deviation of adjusting the spacing of the cutters one by one in the traditional method. It ensures that the spacing of the slices 23 of multiple cutters is completely consistent, and the width error of each segment of packaging film after slitting is extremely small. It is especially suitable for batch slitting scenarios.

[0015] Two support rollers 11 are installed between the support frames 1 to support the packaging film, and the slice 23 is located between the two support rollers 11. When the packaging film is conveyed, the bottom is stably supported by the two support rollers 11, so that it is kept taut and flat in the cutting area. The slice 23 performs the cutting operation between the two support rollers 11, which avoids wrinkles or displacement of the packaging film due to uneven local force, and effectively improves the flatness of the cutting edge and the cutting accuracy.

[0016] A fixing frame 24 is installed between the support plates 2. A slider 25 is slidably connected to the outer wall of the fixing frame 24. A slide 26 is slidably connected between the support plates 2. A docking block 27 is slidably connected to the slide 26. A limiting rod 271 that is slidably connected to the slider 25 is installed at the bottom of the docking block 27. The limiting rod 271 is engaged with the top of the blade clamp 22. When the position of the blade clamp 22 is determined, the docking block 27 on the slide 26 is slid to align the limiting rod 271 with the limiting hole 221 of the blade clamp 22. The slide 26 is pressed down to make several docking blocks 27 on the slide 26 move down synchronously, so that the limiting rod 271 is inserted into the limiting hole 221, thus preventing the blade clamp 22 from being horizontally displaced during the slicing process and further improving the positioning stability of the slice 23.

[0017] The support plate 2 has a slide groove 261 for sliding connection with both ends of the slide 26. The inner wall of the slide groove 261 and the slide 26 are connected by a spring 262. The tension of the spring 262 can keep the slide 26 always in a downward trend, ensuring that the limit rod 271 is tightly engaged with the limit hole 221 of the blade clamp 22, and preventing the limit rod 271 from falling off due to cutting vibration. When it is necessary to adjust the position of the blade clamp 22, the slide 26 can be pulled upward to compress the spring 262, so that the limit rod 271 is disengaged from the limit hole 221. The operation is convenient and labor-saving.

[0018] The blade holder 22 has a limiting hole 221 on its top. A screw 251 is threaded onto the slider 25, with one end of the screw 251 corresponding to one side of the fixing frame 24. When the limiting rod 271 is inserted into the limiting hole 221, the screw 251 is rotated so that one end of it fits tightly against the side of the fixing frame 24. The position of the slider 25 is fixed by the threaded locking force, thereby fixing the limiting rod 271. The setting of multiple limiting holes 221 can accommodate different numbers of blade holders 22, improving the adaptability of the component to different cutting numbers. The locking method of the screw 251 ensures that the slider 25 does not loosen during the cutting process.

[0019] The working principle of this technical solution is as follows: First, the device is installed on the slitting machine via the support frame 1, which is positioned above the packaging film conveying roller. The support roller 11 supports the packaging film and keeps it in a taut and flat state. Then, the fixed block 32 is pushed to drive the width measuring rod 31 to slide along the positioning rod 3, so that the two width measuring rods 31 respectively fit the two ends of the packaging film. The width of the packaging film is directly read through the scale line on the positioning rod 3. Then, the telescopic rod 34 is stretched or contracted according to the required number of cuts. The insertion rod B351 at one end of the telescopic rod 34 is inserted into the insertion hole 33 opened on the fixed block 32, and the insertion rod A35 at the other end is inserted into the positioning hole 222 opened on the first blade clamp 22, thus completing the positioning of the first blade clamp 22. Then, the device is moved along the horizontal rod. 21. Slide the remaining blade clamps 22 and insert the insertion rod B351 into the positioning hole 222 opened on the previous blade clamp 22. Complete the equidistant positioning of all blade clamps 22 in sequence to ensure that the spacing of the slices 23 meets the slitting requirements. Then, pull the slide 26 upward to compress the spring 262. Slide the docking block 27 on the slide 26 so that the limiting rod 271 is aligned with the limiting hole 221 at the top of the blade clamp 22. Release the slide 26. Under the tension of the spring 262, the limiting rod 271 is inserted into the limiting hole 221. Then rotate the screw 251 so that one end is attached to the side of the fixing frame 24 to lock the slider 25. Finally, start the slitting machine. The slices 23 perform precise slitting of the taut and flat packaging film between the two support rollers 11.

[0020] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A slitting blade assembly for a packaging film slitting machine, comprising a support frame (1), characterized in that, A support plate (2) is installed on the support frame (1), and a horizontal rod (21) is installed between the support plates (2). A blade clamp (22) is slidably connected to the outer wall of the horizontal rod (21), and a blade (23) is installed on the blade clamp (22). A positioning rod (3) is installed on one side of the support plate (2), and a scale line is provided on the positioning rod (3). Two fixing blocks (32) are slidably connected to the positioning rod (3), and a width measuring rod that supports the outer end of the packaging film is installed at the bottom of the fixing block (32). 31), the blade clamp (22) and the fixing block (32) are connected by a telescopic rod (34). One end of the telescopic rod (34) is equipped with a plug rod B (351), and the other end of the telescopic rod (34) is slidably connected to a plug rod A (35). The fixing block (32) has a plug hole (33), and the blade clamp (22) has a positioning hole (222). The plug rod A (35) and the plug rod B (351) are slidably connected to the blade clamp (22) and the plug hole (33).

2. The slitting blade assembly for a packaging film slitting machine according to claim 1, characterized in that: Two support rollers (11) for supporting the packaging film are installed between the support frames (1), and the slice (23) is located between the two support rollers (11).

3. The slitting blade assembly for a packaging film slitting machine according to claim 1, characterized in that: A fixing frame (24) is installed between the support plates (2). A slider (25) is slidably connected to the outer wall of the fixing frame (24). A slide frame (26) is slidably connected between the support plates (2). A docking block (27) is slidably connected on the slide frame (26). A limiting rod (271) that is slidably connected to the slider (25) is installed at the bottom of the docking block (27). The limiting rod (271) is engaged with the top of the blade clamp (22).

4. A slitting blade assembly for a packaging film slitting machine according to claim 3, characterized in that: The support plate (2) has a sliding groove (261) that is slidably connected to both ends of the slide (26), and the inner wall of the sliding groove (261) and the slide (26) are connected by a spring (262).

5. A slitting blade assembly for a packaging film slitting machine according to claim 4, characterized in that: The blade clamp (22) has a limiting hole (221) on its top, and a screw (251) is threaded onto the slider (25), with one end of the screw (251) corresponding to one side of the fixing frame (24).

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