Slitting device for plastic packaging product production
By fixing the cutter to the side below the copper plate and using the lifting structure and electric heating plate for hot-press sealing, the problem of dislocation of the cutout position of the plastic bag is solved, the sealing quality is improved, and it is suitable for different packaging bag needs.
Patent Information
- Application Number
- CN202422216468.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the production process of plastic bags, the cut position of the plastic bag is easily misaligned after the cutter is raised, affecting the quality of the heat seal.
By fixing the cutter on the lower side of the copper plate and installing it on the surface of the electric heating plate at the bottom of the lifting structure, the heated copper plate is pressed on the incision position of the packaging bag to seal the heat pressing position to avoid misalignment of the incision position.
It effectively avoids misalignment of the cut position and improves the sealing quality. The copper plate and cutter can be detached and installed to meet the needs of different widths and sealing patterns.
Smart Images
Figure CN223001107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic bag slitting, in particular to a slitting device for the production of plastic packaging products. Background Technique
[0002] Plastic bags are bags mainly made of plastics (commonly used plastics include polypropylene, polyester, nylon, etc.). They are essential items in people's daily lives and are often used to hold other items. They are widely used because of their advantages of low cost, extremely light weight, large capacity, and convenient storage. During the production of plastic bags and the production of items packaged in plastic bags, it is necessary to separate the connected plastic bags into individual ones.
[0003] In the prior art, after using a cutter to cut open a plastic bag, a heat sealing device is used to heat-seal the cut at one end of the plastic bag. However, when the cutter cuts open the plastic bag, during the process of the cutter rising and after the plastic bag is conveyed to the heat sealing position, it is easy to cause the dislocation of the cut position of the plastic bag, thus affecting the quality of the seal. Therefore, we propose a slitting device for the production of plastic packaging products. Content of the Utility Model
[0004] The purpose of the utility model is to provide a slitting device for the production of plastic packaging products. By fixing the cutter below the side of a copper plate, and the copper plate is installed on the surface of an electric heating plate fixed at the bottom of a lifting structure. When the cutter cuts open the packaging bag, the copper plate continues to drive the cutter to lower the height, so that the heated copper plate presses on the surface of the cut position of the packaging bag and directly thermally presses and seals it. When the cutter rises again, there will be no situation of driving the cut position to be misaligned that needs to be sealed, solving the problems raised in the background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A slitting device for the production of plastic packaging products, including a workbench and an upper plate. Roller grooves are respectively opened on both sides of the surface of the workbench, and guide rollers are rotatably installed in the roller grooves. A driving roller close to the guide rollers is rotatably installed on the surface of the workbench above the guide rollers; the upper plate is supported above the workbench through support rods on both sides of its bottom. Electric push rods are vertically installed on both sides of the surface of the upper plate, a lifting plate is horizontally fixed at the end of the electric push rod, an electric heating plate is fixed at the bottom of the lifting plate, a copper plate is attached below the electric heating plate, and a cutter is vertically fixed on the lower side of the copper plate.
[0006] By adopting the above technical solution, two groups of driving rollers and guide rollers are used to drive the packaging bag to move, so that structures such as the cutter are driven by the electric push rod to lower the height. First, the packaging bag is cut open, and then the heated copper plate is continuously lowered to thermally press and seal the cut of the packaging bag. When the lifting plate and other structures are raised later, the cut of the packaging bag will not be misaligned to affect the subsequent sealing quality.
[0007] Optionally, the copper plate is detachably mounted on the lower surface of the heating plate through locking bolts on its outer side, and a plurality of locking bolts are provided.
[0008] By adopting the above technical solution, the copper plate and the cutter are detachably mounted below the heating plate, and different copper plates and cutters can be replaced according to the width of the packaging bag or the pattern to be hot-pressed.
[0009] Optionally, a through hole is formed in the surface of the workbench directly below the cutter, and the length of the through hole is greater than the length of the cutter.
[0010] By adopting the above technical solution, when the cutter descends, it can extend into the through hole to avoid contacting the workbench.
[0011] Optionally, embossments are provided on the bottom surface of the copper plate, and the embossments are evenly distributed on the bottom surface of the copper plate.
[0012] By adopting the above technical solution, the hot-pressed seal is made to meet the required pattern by using the embossments.
[0013] Optionally, a stepping motor is mounted on the surface of the plate body at the front end of the driving roller, and the stepping motor is in transmission connection with the driving roller.
[0014] By adopting the above technical solution, the driving roller is driven to rotate by the stepping motor to realize the conveyance of the packaging bag.
[0015] Optionally, a plurality of supporting feet are fixedly supported at the four corners of the bottom of the workbench.
[0016] By adopting the above technical solution, the workbench is supported by the supporting feet.
[0017] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:
[0018] 1. In the technical solution of the present application, the cutter is fixed below the side of the copper plate, and the copper plate is mounted on the surface of the heating plate fixed at the bottom of the lifting structure. After the cutter cuts open the packaging bag, the copper plate continues to drive the cutter to descend, so that the heated copper plate presses on the surface of the cut position of the packaging bag to directly hot-press the seal. When the cutter rises again, there will be no situation of misaligning the cut position to be sealed.
[0019] 2. In the technical solution of the present application, the copper plate is detachably mounted on the bottom surface of the heating plate by using locking bolts, so that the copper plate and the cutter can be replaced, which is convenient for meeting the use of packaging bags with different widths or packaging bags with different embossment requirements. Description of the Drawings
[0020] Other features, objectives, and advantages of the present utility model will become more apparent by reading the following detailed description of non - restrictive embodiments with reference to the accompanying drawings:
[0021] Figure 1 It is a schematic diagram of the overall structure of the slitting device for the production of plastic packaging products of the present utility model;
[0022] Figure 2 It is a schematic cross - sectional structure diagram of the lifting plate of the slitting device for the production of plastic packaging products of the present utility model.
[0023] In the figure: 1, workbench; 11, through - hole; 12, roller groove; 121, guide roller; 13, driving roller; 131, stepping motor; 2, upper plate; 21, support rod; 22, electric push rod; 3, lifting plate; 31, electric heating plate; 32, copper plate; 321, cutting knife; 322, embossing; 323, locking bolt. Detailed implementation manners
[0024] Please refer to Figure 1-2 , the present utility model provides a technical solution: a slitting device for the production of plastic packaging products, including a workbench 1 and an upper plate 2. Four corners of the bottom of the workbench 1 are all supported and fixed with support feet. There are at least four support feet, and the heights of the support feet are the same. The workbench 1 is horizontally supported by the support feet.
[0025] On both sides of the surface of the workbench 1, roller grooves 12 are opened. Guide rollers 121 are rotatably installed in the roller grooves 12. The upper part of the guide rollers 121 is slightly higher than the surface of the workbench 1. And on the surface of the workbench 1 above the guide rollers 121, a driving roller 13 close to the guide rollers 121 is rotatably installed. A stepping motor 131 is installed on the surface of the plate body at the front end of the driving roller 13. The stepping motor 131 is in transmission connection with the driving roller 13. When the packaging bag is placed between the driving roller 13 and the guide rollers 121, the stepping motor 131 starts to drive the driving roller 13 to rotate, and the packaging bag can be transported from the right side to the left side.
[0026] The upper plate 2 is supported above the workbench 1 through the support rods 21 on both sides of its bottom. The upper plate 2 is parallel to the surface of the workbench 1. And on both sides of the surface of the upper plate 2, electric push rods 22 are vertically installed. The extending end of the electric push rod 22 penetrates below the upper plate 2, and a lifting plate 3 is horizontally fixed at the bottom end of the electric push rod 22. Thus, the electric push rod 22 can drive the lifting plate 3 to rise or fall in height. The lifting plate 3 is also parallel to the surface of the workbench 1.
[0027] An electric heating plate 31 is fixed to the bottom of the lifting plate 3. A copper plate 32 is attached to the lower side of the electric heating plate 31. A cutter 321 is vertically fixed to the lower side edge of the copper plate 32. When the packaging bag is conveyed to the left to align with the cutter 321 at the position where cutting is required, the electric push rod 22 drives the lifting plate 3 and its bottom structure to lower the height, and the cutter 321 can be used to cut the packaging bag at the position where cutting is required. When the electric heating plate 31 is started during the cutting process, the copper plate 32 can be heated and the heat can be transferred to the cutter 321, so that the heated cutter 321 can easily cut the packaging bag. And the lifting plate 3, the copper plate 32, etc. continue to lower the height. A texture 322 is provided on the bottom surface of the copper plate 32. The texture 322 is evenly distributed on the bottom surface of the copper plate 32. When the copper plate 32 descends and presses on the surface of the cut of the packaging bag, the texture 322 can be used to thermally seal the cut and form a texture matching the texture 322.
[0028] The copper plate 32 is detachably installed on the lower surface of the electric heating plate 31 through the locking bolts 323 on its outer side. A plurality of locking bolts 323 are provided to achieve the detachable installation of the copper plate 32 and the cutter 321. When needed, the copper plate 32 and the cutter 321 can be replaced, and cutters 321 with different lengths or copper plates 32 with different textures 322 can be selected to meet the use requirements of packaging bags with different widths or packaging bags with different sealing textures.
[0029] A through hole 11 is formed on the surface of the workbench 1 directly below the cutter 321. The length of the through hole 11 is greater than the length of the cutter 321. After the cutter 321 descends to cut the packaging bag, the cutter 321 is placed in the through hole 11 to avoid contacting the workbench 1.
[0030] During use, the stepping motor 131, the electric push rod 22, and the electric heating plate 31 are connected to the industrial control device. The packaging bag passes through the conveying rollers and then successively through the right and left guide rollers 121 and the driving roller 13. During slitting, the driving roller 13 on the right side is driven to rotate by the stepping motor 131 to convey the packaging bag to the left. When it reaches the position where positioning and slitting are required, the driving of the two driving rollers 13 is temporarily stopped to make the packaging bag stationary. Then, the electric push rod 22 is started to drive the lifting plate 3 to lower. The electric heating plate 31 at its bottom starts to work, heating the copper plate 32, and at the same time, the heat is transferred to the cutting knife 321. When the heated cutting knife 321 lowers, it can first smoothly cut the packaging bag. Then, the electric push rod 22 continuously drives the lifting plate 3 to lower until the copper plate 32 installed at the bottom of the electric heating plate 31 presses against the surface of the packaging bag. Furthermore, the heated copper plate 32 can be directly used in combination with the embossing 322 on its surface to thermally seal the packaging bag. Subsequently, the electric push rod 22 drives the lifting plate 3 and the electric heating plate 31 and other structures to rise. Since the cut of the packaging bag has been thermally sealed, when the cutting knife 321 rises, it will not cause misalignment at the sealed cut. After that, the stepping motor 131 at the front end of the two driving rollers 13 is started to convey the slit packaging bag and the unslit packaging bag to the left.
Claims
1. A slitting device for producing plastic packaging products, comprising a workbench (1) and an upper plate (2), characterized in that: Roller grooves (12) are provided on both sides of the surface of the workbench (1), guide rollers (121) are rotatably installed in the roller grooves (12), and a driving roller (13) close to the guide roller (121) is rotatably installed on the surface of the workbench (1) above the guide roller (121); The upper plate (2) is supported by support rods (21) on both sides of its bottom and is placed above the workbench (1). Electric push rods (22) are vertically installed on both sides of the surface of the upper plate (2). A lifting plate (3) is horizontally fixed to the end of the electric push rod (22). An electric heating plate (31) is fixed to the bottom of the lifting plate (3). A copper plate (32) is attached below the electric heating plate (31). A cutting knife (321) is vertically fixed to the side of the bottom of the copper plate (32).
2. The slitting device for producing plastic packaging products according to claim 1, characterized in that: The copper plate (32) is detachably mounted on the lower surface of the electric heating plate (31) via a locking bolt (323) on its outer side, and a plurality of locking bolts (323) are provided.
3. The slitting device for producing plastic packaging products according to claim 1, characterized in that: A through-opening (11) is provided on the surface of the workbench (1) directly below the cutting knife (321), and the length of the through-opening (11) is greater than the length of the cutting knife (321).
4. The slitting device for producing plastic packaging products according to claim 1, characterized in that: The bottom surface of the copper plate (32) is provided with embossings (322), and the embossings (322) are evenly distributed on the bottom surface of the copper plate (32).
5. The slitting device for producing plastic packaging products according to claim 1, characterized in that: A stepping motor (131) is installed on the plate surface at the front end of the driving roller (13), and the stepping motor (131) is drivingly connected to the driving roller (13).
6. The slitting device for producing plastic packaging products according to claim 1, characterized in that: The four corners of the bottom of the workbench (1) are all supported and fixed with supporting feet, and a plurality of supporting feet are provided.