Plastic packaging cutting auxiliary positioning mechanism

The auxiliary positioning mechanism, consisting of a support base, a fixing plate, and a sliding sleeve, solves the problem of manual positioning deviation in the cutting of plastic packaging bags, realizes high-precision automated cutting, and improves production efficiency.

CN224527377UActive Publication Date: 2026-07-21CHENGDU DAOFENGXING PACKAGING MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU DAOFENGXING PACKAGING MATERIAL CO LTD
Filing Date
2025-09-01
Publication Date
2026-07-21

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    Figure CN224527377U_ABST
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Abstract

The utility model discloses a kind of plastic packaging cutting auxiliary positioning mechanisms, it is related to plastic packaging cutting technical field, including support seat, the support seat is installed on the upper end of transport frame, the support seat end fixedly connected fixed plate, two sliding sleeves are slidably arranged on the fixed plate, by positioning block first contact plastic packaging bag to position, prevent bag body deviation when cutting, subsequently cutting knife moves down and passes through positioning groove to complete cutting, simultaneously transmission rod is pressed down in turn, by transmission ring compression spring, spring keeps pressing on positioning block to keep bag body fixed by limit ring, after cutting is completed, transmission block drives cutting knife and transmission plate to go up reset, transmission block rubs cutout in reset process, spring still keeps pressing at this time, ensure that positioning block is always pressed tightly packaging bag, after transmission block is completely reset, transmission rod drives limit ring and positioning block synchronous reset by sliding slot, to effectively suppress bag body shaking in cutting process, play the role of automatic positioning cutting.
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Description

Technical Field

[0001] This utility model relates to the field of plastic packaging cutting technology, specifically a plastic packaging cutting auxiliary positioning mechanism. Background Technology

[0002] Plastic packaging bag cutting is an integral part of packaging production and processing. Plastic packaging bags are widely used in food, daily chemicals, and logistics. Plastic packaging bag cutting transforms pre-made bags into finished products through high-precision slitting. By slitting plastic packaging bags without wrinkles or burrs, the production process meets the usage needs of various fields for plastic packaging bags.

[0003] For example, the patent with authorization announcement number CN222307691U describes a cutting device for processing plastic packaging bags. One end of the plastic packaging bag is placed on the upper end of a fixed shaft one, and then the threaded shaft one is rotated to make the extrusion shaft one move downward to extrude and squeeze one end of the packaging bag, thereby fixing one end of the packaging bag. Then, according to the size of the packaging bag, the fixed shaft two is moved to place the other end of the packaging bag on the upper end of the fixed shaft two, and then the threaded shaft two is rotated to make the extrusion shaft two move downward to extrude and squeeze the other end of the packaging bag, thereby fixing the other end of the packaging bag, thus improving the stability of the device.

[0004] The existing technology has the following problems: In the existing technology, the position of the plastic packaging bag is adjusted manually and the two ends of the plastic packaging bag are fixed to facilitate subsequent cutting work. However, manual fixing is prone to deviation, which is not conducive to high-precision cutting operations and continuous cutting of plastic packaging bags, resulting in low production efficiency.

[0005] Based on this, a plastic packaging cutting auxiliary positioning mechanism is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0006] The purpose of this invention is to provide an auxiliary positioning mechanism for cutting plastic packaging to solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A plastic packaging cutting auxiliary positioning mechanism includes a support base mounted on the upper end of a transport vehicle frame. A fixing plate is fixedly connected to the end of the support base. Two sliding sleeves are slidably disposed on the fixing plate. A correction plate is disposed at the lower end of each sliding sleeve. A fixing seat is disposed on the side of the support base. A telescopic cylinder is mounted on the fixing seat. The telescopic cylinder drives a transmission block to move. A cutting blade is fixedly connected to the end of the transmission block. A guide rail for guiding the movement of the cutting blade is disposed on the fixing seat. An adjustment structure is disposed on the fixing plate. An auxiliary positioning component is disposed on the transmission block.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative: the adjustment structure includes positioning holes, the surface of the fixing plate is provided with a plurality of positioning holes, the sliding sleeve is threadedly connected with a plurality of bolts, the bolts pass through the positioning holes to lock the position of the sliding sleeve.

[0011] In one alternative: the auxiliary positioning component includes a transmission plate, the transmission block is fixedly connected to the transmission plate on its side, two transmission rods are vertically fixedly connected to the surface of the transmission plate, and the transmission rods are slidably connected to the positioning block.

[0012] In one alternative: the surface of the positioning block is provided with a positioning groove for the cutting blade to cut into.

[0013] In one alternative: a groove is formed inside the positioning block along the sliding direction of the transmission rod, and a limiting block is provided on the surface of the transmission rod, the limiting block being slidably connected to the groove.

[0014] In one alternative: a limiting ring is provided inside the slide groove, and the limiting ring is located above the limiting block.

[0015] In one alternative: one end of the spring is fixedly connected to the surface of the limiting ring, and the other end of the spring is fixedly connected to the transmission ring. The transmission ring is located inside the slide groove and is fixedly connected to the surface of the transmission rod. During the cutting operation, the telescopic cylinder drives the transmission block to move, and the transmission block drives the cutting blade and the transmission plate to move.

[0016] In one alternative: the surface of the positioning block is provided with anti-slip texture.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. Before cutting, the positioning block first contacts the plastic packaging bag to position it, preventing the bag from shifting during cutting. Then, the cutting blade moves down and passes through the positioning groove to complete the cutting. At the same time, the transmission rod presses down, compressing the spring through the transmission ring. The spring pushes the limiting ring to continuously press on the positioning block to keep the bag fixed. After cutting, the transmission block drives the cutting blade and transmission plate to move upward and reset. During the reset process, the transmission block rubs against the cut. At this time, the spring continues to apply pressure to ensure that the positioning block always presses the packaging bag tightly. After the transmission block is completely reset, the transmission rod drives the limiting ring and positioning block to reset synchronously through the slide groove, thereby effectively suppressing the bag shaking during the cutting process and playing the role of automated positioning and cutting.

[0019] 2. This utility model provides a fixed condition for the sliding sleeve by screwing the bolt into the sliding sleeve and locking the sliding sleeve through the positioning hole. The range of the correction plate can be adjusted by adjusting the position of the sliding sleeve, which is convenient for guiding the correction of plastic packaging bags of different sizes.

[0020] 3. This utility model uses a telescopic cylinder to drive the transmission block to move, and the transmission block drives the cutting blade and transmission plate to move, providing conditions for automated cutting and positioning, and making it convenient for workers to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the bolt of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the cutting blade of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the spring of this utility model.

[0025] Figure 5 This is a schematic diagram of the limiting ring of this utility model.

[0026] Figure reference numerals: 101, transport frame; 102, support base; 103, fixing plate; 104, sliding sleeve; 105, correction plate; 106, fixing base; 107, telescopic cylinder; 108, transmission block; 109, cutting blade; 201, positioning hole; 202, bolt; 203, transmission plate; 204, transmission rod; 205, positioning block; 206, positioning groove; 301, sliding groove; 302, limiting ring; 303, limiting block; 304, spring; 305, transmission ring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In one embodiment, such as Figures 1-3As shown, a plastic packaging cutting auxiliary positioning mechanism includes a support base 102, which is mounted on the upper end of a transport vehicle frame 101. A fixing plate 103 is fixedly connected to the end of the support base 102. Two sliding sleeves 104 are slidably mounted on the fixing plate 103. A correction plate 105 is provided at the lower end of each sliding sleeve 104. A fixing seat 106 is provided on the side of the support base 102. A telescopic cylinder 107 is mounted on the fixing seat 106. The telescopic cylinder 107 drives a transmission block 108 to move. A cutting blade 109 is fixedly connected to the end of the transmission block 108. A cutting guide is provided on the fixing seat 106. The guide rail for the movement of the blade 109 has an adjustment structure on the fixed plate 103 and an auxiliary positioning component on the transmission block 108. The plastic packaging bag is transported by the transport frame 101. The support seat 102 and the fixed plate 103 provide adjustment conditions for the sliding sleeve 104. The position of the correction plate 105 is adjusted by adjusting the position of the sliding sleeve 104 on the fixed plate 103, which facilitates the correction and guidance of plastic packaging bags of different sizes. The transmission block 108 is driven to move by the telescopic cylinder 107, and the transmission block 108 drives the cutting blade 109 to move. The cutting blade 109 cuts the plastic packaging bag to complete the cutting operation.

[0029] In one embodiment, such as Figure 2 and Figure 3 As shown, the adjustment structure includes positioning holes 201. The surface of the fixing plate 103 is provided with several positioning holes 201. The sliding sleeve 104 is threadedly connected with several bolts 202. The bolts 202 pass through the positioning holes 201 to lock the position of the sliding sleeve 104. By screwing the bolts 202 into the sliding sleeve 104, the bolts 202 pass through the positioning holes 201 to lock the sliding sleeve 104, providing a fixing condition for the sliding sleeve 104. The position of the sliding sleeve 104 can be adjusted on the fixing plate 103, which facilitates the correction operation of plastic packaging bags of different sizes.

[0030] In one embodiment, such as Figure 3 and Figure 4 As shown, the auxiliary positioning component includes a transmission plate 203, a transmission block 108 is fixedly connected to the transmission plate 203 on its side, two transmission rods 204 are vertically fixedly connected to the surface of the transmission plate 203, and the transmission rods 204 are slidably connected to the positioning block 205. Power is transmitted through the transmission block 108, which drives the transmission plate 203 to move, and the transmission plate 203 drives the transmission rods 204 to move, thus providing conditions for positioning the plastic packaging bag.

[0031] In one embodiment, such as Figure 4 and Figure 5 As shown, the surface of the positioning block 205 is provided with a positioning groove 206 for the cutting blade 109 to cut into, thereby providing conditions for the cutting operation by setting the cutting blade 109;

[0032] In one embodiment, such as Figure 4 and Figure 5 As shown, a groove 301 is formed inside the positioning block 205 along the sliding direction of the transmission rod 204. A limiting block 303 is provided on the surface of the transmission rod 204. The limiting block 303 is slidably connected to the groove 301. The groove 301 provides sliding conditions for the transmission rod 204. When the transmission rod 204 moves upward, the limiting block 303 is driven by the limiting ring 302. The limiting ring 302 moves and resets with the limiting block 303.

[0033] In one embodiment, such as Figure 4 and Figure 5 As shown, a limiting ring 302 is provided inside the slide groove 301. The limiting ring 302 is located above the limiting block 303. A spring 304 is provided to provide conditions for the positioning groove 206 to fit against the surface of the plastic packaging bag.

[0034] In one embodiment, such as Figure 4 and Figure 5 As shown, one end of the spring 304 is fixedly connected to the surface of the limiting ring 302, and the other end of the spring 304 is fixedly connected to the transmission ring 305. The transmission ring 305 is located inside the slide groove 301 and is fixedly connected to the surface of the transmission rod 204. During the cutting operation, the telescopic cylinder 107 drives the transmission block 108 to move, and the transmission block 108 drives the cutting blade 109 and the transmission plate 203 to move. Before the cutting blade 109 cuts the plastic packaging bag, the positioning block 205 first contacts the plastic packaging bag to position the bag and prevent it from deviating during the cutting process. At this time, the cutting blade 109 moves downward through the positioning groove 206 and cuts the packaging bag. During this process, the transmission rod 204 moves downward, and the transmission... The rod 204 compresses the spring 304 via the transmission ring 305, and the spring 304 continues to apply pressure to the limiting ring 302. The sliding groove 301 provides space for the movement of the transmission rod 204. When the cutting is completed, the transmission block 108 drives the cutting blade 109 and the transmission plate 203 to reset. At this time, the spring 304 continues to apply pressure to the limiting ring 302 to keep the positioning block 205 still fixing the plastic packaging bag. When the transmission block 108 passes through the positioning groove 206 to reset, the cooperation between the positioning block 205 and the positioning groove 206 prevents the plastic packaging bag from sticking to the surface of the cutting blade 109. When the transmission block 108 has finished resetting, the transmission rod 204 drives the limiting ring 302 and the positioning block 205 to reset via the sliding groove 301, completing one cutting operation.

[0035] The above embodiment discloses a plastic packaging cutting auxiliary positioning mechanism. A plastic packaging bag is transported via a transport frame 101. A support base 102 and a fixing plate 103 provide adjustment conditions for a sliding sleeve 104. A bolt 202 is screwed into the sliding sleeve 104, passing through a positioning hole 201 to lock the sliding sleeve 104, thus providing a fixed condition for the sliding sleeve 104. The position of the sliding sleeve 104 on the fixing plate 103 is adjusted to facilitate correction of plastic packaging bags of different sizes. Before the cutting blade 109 cuts the plastic packaging bag, power is transmitted via a transmission block 108. The transmission block 108 drives the transmission plate 203 to move, which in turn drives the transmission rod 204 to move, providing conditions for positioning the plastic packaging bag. The positioning block 205 first contacts the plastic packaging bag to position it, preventing deviation during cutting. At this time, the cutting blade 109 moves downwards through the positioning groove 206 to cut. The blade 109 cuts the packaging bag. During this process, the transmission rod 204 moves downward. The transmission rod 204 compresses the spring 304 through the transmission ring 305. The spring 304 compresses the limiting ring 302 to continue applying pressure. The sliding groove 301 provides sliding conditions for the transmission rod 204. When the cutting is completed, the transmission block 108 drives the cutting blade 109 and the transmission plate 203 to reset. At this time, the spring 304 continues to apply pressure to the limiting ring 302 to keep the positioning block 205 still fixing the plastic packaging bag. When the transmission block 108 passes through the positioning groove 206 to reset, the cooperation between the positioning block 205 and the positioning groove 206 prevents the plastic packaging bag from sticking to the surface of the cutting blade 109. When the transmission block 108 has finished resetting, when the transmission rod 204 moves upward, the limiting block 303 is driven by the limiting ring 302. The limiting ring 302 moves and resets with the limiting block 303. The limiting ring 302 drives the positioning block 205 to reset, completing the cutting operation.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A plastic packaging cutting auxiliary positioning mechanism, comprising a support base (102), the support base (102) being mounted on the upper end of a transport vehicle frame (101), a fixing plate (103) being fixedly connected to the end of the support base (102), two sliding sleeves (104) being slidably provided on the fixing plate (103), a correction plate (105) being provided at the lower end of the sliding sleeves (104), a fixing base (106) being provided on the side of the support base (102), a telescopic cylinder (107) being mounted on the fixing base (106), the telescopic cylinder (107) driving a transmission block (108) to move, a cutting blade (109) being fixedly connected to the end of the transmission block (108), and a guide rail for guiding the movement of the cutting blade (109) being provided on the fixing base (106), characterized in that, The fixed plate (103) is provided with an adjustment structure, and the transmission block (108) is provided with an auxiliary positioning component.

2. The plastic packaging cutting auxiliary positioning mechanism according to claim 1, characterized in that, The adjustment structure includes a positioning hole (201), and the surface of the fixing plate (103) is provided with a plurality of positioning holes (201). The sliding sleeve (104) is threadedly connected with a plurality of bolts (202), and the bolts (202) pass through the positioning hole (201) to lock the position of the sliding sleeve (104).

3. The plastic packaging cutting auxiliary positioning mechanism according to claim 1, characterized in that, The auxiliary positioning component includes a transmission plate (203), the transmission block (108) is fixedly connected to the transmission plate (203) on its side, two transmission rods (204) are vertically fixedly connected to the surface of the transmission plate (203), and the transmission rods (204) are slidably connected to the positioning block (205).

4. The plastic packaging cutting auxiliary positioning mechanism according to claim 3, characterized in that, The positioning block (205) has a positioning groove (206) on its surface for the cutting blade (109) to cut into.

5. The plastic packaging cutting auxiliary positioning mechanism according to claim 3, characterized in that, The positioning block (205) has a groove (301) inside along the sliding direction of the transmission rod (204), and the surface of the transmission rod (204) is provided with a limiting block (303), which is slidably connected to the groove (301).

6. The plastic packaging cutting auxiliary positioning mechanism according to claim 5, characterized in that, The slide (301) is provided with a limiting ring (302) inside, and the limiting ring (302) is located above the limiting block (303).

7. The plastic packaging cutting auxiliary positioning mechanism according to claim 6, characterized in that, One end of a spring (304) is fixedly connected to the surface of the limiting ring (302), and the other end of the spring (304) is fixedly connected to a transmission ring (305). The transmission ring (305) is located inside the slide groove (301). The transmission ring (305) is fixedly connected to the surface of the transmission rod (204). During the cutting operation, the telescopic cylinder (107) drives the transmission block (108) to move, and the transmission block (108) drives the cutting blade (109) and the transmission plate (203) to move.

8. The plastic packaging cutting auxiliary positioning mechanism according to claim 3, characterized in that, The surface of the positioning block (205) is provided with anti-slip texture.