A trimming device for processing plastic packaging bags

Abstract

The utility model discloses a trimming device for processing plastic packaging bags, comprising a trimming seat and a trimming mechanism located on the trimming seat, an inverted U-shaped bracket is welded above the trimming seat, wherein a motor is horizontally mounted on one side wall of the bracket, and an inner sink groove is formed inwardly on the bottom wall of the bracket, a threaded rod is coaxially connected to the output shaft of the motor, and an upper slide seat is threadedly sleeved on the threaded rod, the upper slide seat is fitted with the top wall of the inner sink groove, so that the threaded rod can drive the upper slide seat to translate along the top wall of the inner sink groove when it is running, an extension rod is welded on the bottom wall of the upper slide seat, and the trimming mechanism comprises a hot cutter fixedly welded to the bottom of the extension rod and a mold bar embedded and mounted on the top wall of the trimming seat, wherein one end of the hot cutter used for trimming is tilted. The trimming device for processing plastic packaging bags achieves a better trimming effect on the position to be trimmed, so that the trimming of the plastic packaging bag is smoother, and the problem of poor trimming effect or unsuccessful trimming is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic packaging bag processing, in particular to a trimming device for plastic packaging bag processing. Background Art

[0002] Plastic packaging bags can be divided into OPP, CPP, PP, PE, PVA, EVA, composite bags, co-extrusion bags, etc. according to their materials. They are used to produce packaging bags for various daily necessities and are widely used in daily life and industrial production. Commonly used plastic packaging bags are mostly made of polyethylene film, which is non-toxic and can be used to hold food.

[0003] In the process of realizing the utility model, the inventors found that there are at least the following problems in the technology: when processing plastic packaging bags, it involves trimming the edges. The current trimming mechanism usually simply uses the corresponding tool for cutting, but the tool quickly passes through the plastic packaging bag at the edge to be trimmed, and does not heat the position (refer to the patent application number CN202220385570.7 in the prior art - a trimming device for plastic bag production), sometimes the trimming cannot be successful (because the plastic packaging bag has a certain toughness), and sometimes it leads to poor trimming effect.

[0004] For this reason, we propose a plastic packaging bag processing edge trimming device to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a trimming device for processing plastic packaging bags, which can achieve a better trimming effect on the position to be trimmed, make the trimming of the plastic packaging bags smoother, avoid the problem of poor trimming effect or unsuccessful trimming, and effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A trimming device for processing plastic packaging bags, comprising a trimming seat and a trimming mechanism located on the trimming seat, an inverted U-shaped bracket is welded above the trimming seat, wherein a motor is horizontally mounted on one side wall of the bracket, and an inner sinking groove is formed inwardly on the bottom wall of the bracket, a threaded rod is coaxially connected to the output shaft of the motor, and an upper slide seat is threadedly sleeved on the threaded rod, the upper slide seat is fitted with the top wall of the inner sinking groove, so that the threaded rod can drive the upper slide seat to translate along the top wall of the inner sinking groove when it is running, and an extension rod is welded on the bottom wall of the upper slide seat;

[0008] The trimming mechanism includes a hot cutting knife fixedly welded to the bottom of the extension rod and a mold bar embedded in the top wall of the trimming seat, wherein the end of the hot cutting knife used for trimming is tilted, and first electric heating plates are respectively installed on the two opposite side walls of the hot cutting knife. A heating groove and a cutting slit below the heating groove are formed on the mold bar, and long strip-shaped inclined convex seats are welded on the two opposite side walls of the heating groove, and the two sides of the two inclined convex seats facing each other are inclined surfaces, and the inclined surfaces of the two inclined convex seats are installed with second electric heating plates that contact the position to be trimmed on the plastic packaging bag.

[0009] As a preferred implementation scheme, the threaded rod is horizontally arranged in the inner sinking groove, and both ends of the threaded rod are rotatably connected to the bracket; so that the threaded rod can operate stably under the drive of the motor, and the motor needs to be powered by external power facilities.

[0010] As a preferred embodiment, the two first electric heating plates are symmetrically arranged on both sides of the hot cutting knife and close to one end of the hot cutting knife extending into the heating groove; when the two first electric heating plates are powered on, they release heat on the hot cutting knife, so that the hot cutting knife has a higher temperature when it contacts the position of the plastic packaging bag to be trimmed, and the power supply structures of the two first electric heating plates can be installed on the extension rod.

[0011] As a preferred embodiment, the bottom of the hot cutter extends into the heating groove and extends into the cutting seam; the heating groove is used to heat the plastic packaging bag, so that there are two hot spots at the position to be cut on the plastic packaging bag, which is easier to cut. The plastic packaging bag extends into the cutting seam to accept the cutting of the hot cutter, so that the cutting is more thorough and the cutting failure will not occur.

[0012] As a preferred embodiment, the two second electric heating plates are inclined on their facing sides, so as to facilitate better contact with the position of the plastic packaging bag to be trimmed, and the power supply structure of the second electric heating plate can be installed above the trimming seat.

[0013] In summary, the technical effects and advantages of the utility model are as follows:

[0014] The edge trimming device for processing plastic packaging bags uses a hot cutting knife to press the edge to be trimmed position on the plastic packaging bag into the slit in the mold strip, so that the bottom of the hot cutting knife enters the slit, and at the same time, the second electric heating plates inclined on both sides of the heating groove can better heat the plastic packaging bag in a short time, thereby achieving a better edge trimming effect at the edge to be trimmed position, making the edge trimming of the plastic packaging bag smoother, and avoiding the problem of poor edge trimming effect or unsuccessful edge trimming.

[0015] The edge trimming device for processing plastic packaging bags has a heated hot cutting knife that moves from one edge of a heating tank to the other edge of the heating tank. During this process, the hot cutting knife passes through the edge to be trimmed of the plastic packaging bag and presses it into the heating tank and the cutting seam. The hot cutting knife also starts cutting during the pressing process. After the edge to be trimmed of the plastic packaging bag enters the heating tank, it will immediately be heated by two second electric heating plates, so that the edge to be trimmed of the plastic packaging bag absorbs heat in a short time of trimming, making the trimming smoother and more successful. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 A vertical cross-sectional view of one side of the utility model;

[0018] Figure 3 It is a vertical cross-sectional view of the other side of the utility model.

[0019] In the figure: 1. trimming seat; 2. bracket; 3. motor; 4. inner sink; 5. threaded rod; 6. upper slide seat; 7. extension rod; 8. hot cutting knife; 9. first electric heating plate; 10. mold bar; 11. heating groove; 12. cutting seam; 13. inclined convex seat; 14. second electric heating plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 3 , a trimming device for processing plastic packaging bags, comprising a trimming seat 1 and a trimming mechanism located on the trimming seat 1, an inverted U-shaped bracket 2 is welded above the trimming seat 1, wherein a motor 3 is horizontally installed on one side wall of the bracket 2, and an inner sinking groove 4 is formed inwardly on the bottom wall of the bracket 2, a threaded rod 5 is coaxially connected to the output shaft of the motor 3, the threaded rod 5 is horizontally arranged in the inner sinking groove 4, and both ends of the threaded rod 5 are rotatably connected to the bracket 2, so that the threaded rod 5 can stably operate under the drive of the motor 3, the motor 3 needs to be powered by external power facilities, and an upper slide 6 is threadedly sleeved on the threaded rod 5, the upper slide 6 is in contact with the top wall of the inner sinking groove 4, so that the threaded rod 5 can drive the upper slide 6 to translate along the top wall of the inner sinking groove 4 when it is running, and an extension rod 7 is welded on the bottom wall of the upper slide 6;

[0022] The trimming mechanism comprises a hot cutting knife 8 fixedly welded to the bottom of the extension rod 7 and a mold bar 10 embedded in the top wall of the trimming seat 1, wherein one end of the hot cutting knife 8 used for trimming is inclined, and first electric heating plates 9 are respectively installed on the two opposite side walls of the hot cutting knife 8, and a heating groove 11 and a slit 12 located below the heating groove 11 are formed on the mold bar 10. The two first electric heating plates 9 are symmetrical to the two sides of the hot cutting knife 8 and close to the end of the hot cutting knife 8 extending into the heating groove 11, so that the two first electric heating plates 9 are powered on to release heat on the hot cutting knife 8, so that the hot cutting knife 8 has a higher temperature when it contacts the position of the plastic packaging bag to be trimmed, and the power supply structure of the two first electric heating plates 9 can be installed on the extension rod 7;

[0023] The bottom of the hot cutting knife 8 extends into the heating groove 11 and extends into the slit 12, wherein the heating groove 11 is used to heat the plastic packaging bag, so that there are two hot spots at the position to be trimmed on the plastic packaging bag, which is easier to be cut, and the plastic packaging bag extends into the slit 12 to receive the trimming of the hot cutting knife 8, so that the trimming is more thorough and the trimming failure will not occur. Long strip-shaped inclined convex seats 13 are welded on the opposite side walls of the heating groove 11, and the two sides of the two inclined convex seats 13 facing each other are inclined surfaces, and the second electric heating plates 14 that contact the position to be trimmed on the plastic packaging bag are installed on the inclined surfaces of the two inclined convex seats 13. The two second electric heating plates 14 facing each other are inclined, so as to facilitate better contact with the position to be trimmed of the plastic packaging bag, and the power supply structure of the second electric heating plate 14 can be installed above the trimming seat 1.

[0024] The trimming device for processing plastic packaging bags: when in operation, the plastic packaging bags to be trimmed are placed flat on the trimming seat 1, so that the trimming position of the plastic packaging bags to be trimmed is directly above the mold bar 10, the two first electric heating plates 9 are powered on to heat the hot cutting knife 8, and the two second electric heating plates 14 are also powered on to release heat in the heating groove 11; (the hot cutting knife 8 is located at one side edge of the heating groove 11 at this time) the driving motor 3 is driven to drive the threaded rod 5 to operate, so that the upper slide seat 6 is translated along the top wall of the inner sink groove 4, driving the extension rod 7 The heated hot cutting knife 8 moves horizontally, so that the heated hot cutting knife 8 moves from one side edge of the heating groove 11 to the other side edge. During this process, the hot cutting knife 8 passes through the edge to be cut of the plastic packaging bag and presses it into the heating groove 11 and the cutting seam 12. The hot cutting knife 8 also starts cutting during the pressing process. After the edge to be cut of the plastic packaging bag enters the heating groove 11, it will immediately receive the heating of the two second electric heating plates 14, so that the edge to be cut of the plastic packaging bag absorbs heat in a short time of being cut, so that the cutting is smoother and the success rate is higher.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A trimming device for processing plastic packaging bags, comprising a trimming seat (1) and a trimming mechanism located on the trimming seat (1), characterized in that: An inverted U-shaped bracket (2) is welded above the trimming seat (1), wherein a motor (3) is horizontally mounted on one side wall of the bracket (2), and an inner sink groove (4) is formed inwardly on the bottom wall of the bracket (2), a threaded rod (5) is coaxially connected to the output shaft of the motor (3), and an upper slide seat (6) is threadedly sleeved on the threaded rod (5), the upper slide seat (6) is in contact with the top wall of the inner sink groove (4), and an extension rod (7) is welded to the bottom wall of the upper slide seat (6); The trimming mechanism comprises a hot cutting knife (8) fixedly welded to the bottom of an extension rod (7) and a mold bar (10) embedded in the top wall of a trimming seat (1), wherein one end of the hot cutting knife (8) used for trimming is tilted, and first electric heating plates (9) are respectively installed on two opposite side walls of the hot cutting knife (8), a heating groove (11) and a cutting slit (12) located below the heating groove (11) are formed on the mold bar (10), and long strip-shaped inclined convex seats (13) are welded on two opposite side walls of the heating groove (11), and the two sides of the two inclined convex seats (13) facing each other are inclined surfaces, and second electric heating plates (14) that contact the position to be trimmed on the plastic packaging bag are installed on the inclined surfaces of the two inclined convex seats (13).

2. A trimming device for processing plastic packaging bags according to claim 1, characterized in that: The threaded rod (5) is horizontally arranged in the inner sink groove (4), and both ends of the threaded rod (5) are rotatably connected to the bracket (2).

3. The edge trimming device for processing plastic packaging bags according to claim 1, characterized in that: The two first electric heating plates (9) are symmetrical to the two sides of the hot cutting knife (8) and close to one end of the hot cutting knife (8) extending into the heating groove (11).

4. The edge trimming device for processing plastic packaging bags according to claim 1, characterized in that: The bottom of the hot cutting knife (8) extends into the heating groove (11) and into the cutting slit (12).

5. The edge trimming device for processing plastic packaging bags according to claim 1, characterized in that: The two second electric heating plates (14) are arranged at an inclination on the sides facing each other.

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