Trimming device for plastic box production
Through the combined structure of fixing the base, positioning grooves, columns, cross plates, lifting cylinders, tool holders and hot cutters, the problems of low trimming efficiency and insufficient flatness of the plastic box are solved, and a fast and flat trimming effect is achieved.
Patent Information
- Application Number
- CN202422419582.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The trimming device used in the production of existing plastic boxes has low trimming efficiency, and the flip surface of the box mouth after trimming is not flat enough.
The combined structure of fixed base, positioning grooves, columns, horizontal plates, lifting cylinders, tool holders and hot cutters is adopted. The lifting cylinder drives the tool holders and hot cutters to cut the burrs at one time. Combined with the design of elastic telescopic rods and pressure plates, it ensures that the flip of the box mouth is separated from the hot cutter after trimming, and the melting characteristics of the hot cutters make the cutters flat.
Quick trimming is achieved, and the flip surface of the box mouth is smoother, avoiding the phenomenon of collapse, and improving the trimming efficiency and cut quality.
Smart Images
Figure CN223278448U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic box production, in particular to a plastic box production trimming device. Background Art
[0002] A plastic box is made of materials such as high-density polyethylene (HDPE) and polypropylene (PP) through an injection molding process. These materials have high impact strength, which makes the plastic box durable and waterproof. It can be used in humid environments without affecting the items inside. However, during the injection molding process of the plastic box, the edges of the box flange will have burrs, material heads and sharp corners due to factors such as the injection molding process and the mold. These need to be removed by a trimming device to make the box flange smoother and achieve an aesthetically pleasing and safe effect.
[0003] At present, the trimming device used in the production of plastic boxes usually uses a trimming knife to trim the edge of the box flange one by one. The trimming efficiency is low, and the surface of the box flange after trimming is not smooth enough. Therefore, we propose a trimming device for the production of plastic boxes. Utility Model Content
[0004] The purpose of the utility model is to provide a trimming device for the production of plastic boxes, which has the advantages of being able to quickly complete the trimming of the edge of the box mouth flange without the need for trimming edge by edge, thereby improving the trimming efficiency and making the surface of the box mouth flange smoother after trimming. It solves the problem that the trimming device currently used in the production of plastic boxes usually uses a trimming knife to trim edge by edge when trimming the edge of the box mouth flange, resulting in low trimming efficiency and an insufficiently smooth surface of the box mouth flange after trimming.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic box production trimming device, comprising a fixed base and a horizontal plate, wherein columns are fixedly connected to positions on both sides of the lower surface of the horizontal plate, and the ends of the two columns are fixedly connected to positions on both sides of the upper surface of the fixed base, a positioning groove is provided at the middle position of the upper surface of the fixed base, a lifting cylinder is fixedly installed at the middle position of the upper surface of the horizontal plate, the end of the output shaft of the lifting cylinder is fixedly connected to a connecting plate, a knife holder is fixedly installed on the lower surface of the connecting plate, and a hot cutting knife is fixedly installed on the lower surface of the knife holder near the edge.
[0006] Preferably, mounting holes are provided on the upper surface of the fixed base near the four corners.
[0007] Preferably, sliding sleeves are fixedly installed at both sides of the outer surface of the tool holder, and the two sliding sleeves are slidably connected to the outer surfaces of the two columns respectively.
[0008] Preferably, coil springs are movably sleeved on the outer surfaces of the two columns at positions below the two sliding sleeves.
[0009] Preferably, an elastic telescopic rod is fixedly installed at the middle position of the lower surface of the connecting plate, and a pressure plate is fixedly connected to the end of the elastic telescopic rod.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0011] 1. The utility model achieves the goal of quickly completing the trimming of the edge of the box mouth flange by arranging a base, a positioning groove, a column, a horizontal plate, a lifting cylinder, a knife holder and a hot cutting knife, without the need for trimming one edge at a time, thereby improving the trimming efficiency and making the surface of the box mouth flange smoother after trimming. The bottom of the plastic box is placed inside the positioning groove, and the lifting cylinder drives the knife holder to descend, so that the hot cutting knife can cut off the burrs on the edge of the entire box mouth flange at one time. Moreover, since it is a hot cutting knife, the plastic burrs will melt during the cutting process, and there will be no cracking, so the incision is relatively smoother.
[0012] 2. The utility model achieves the effect of facilitating the separation of the hot cutter and the box flange after trimming by arranging an elastic telescopic rod and a pressure plate. During the descending process of the knife holder, the pressure plate first contacts the inner bottom of the plastic box, and as the knife holder descends, the elastic telescopic rod is compressed. When the hot cutter completes the trimming of the box flange, the knife holder drives the hot cutter to rise and separate from the box flange. At this time, the compressed elastic telescopic rod is released, and the plastic box is fixed in the positioning groove through the elastic force, so as to facilitate the separation of the hot cutter and the box flange, and prevent the box flange from sticking to the hot cutter and making the two unable to be separated.
[0013] 3. The utility model provides a sliding sleeve to guide the lifting and lowering of the knife holder, thereby improving the stability of the knife holder and the hot cutting knife.
[0014] 4. The utility model provides a coil spring, so that when the knife holder descends, the coil spring is compressed, and when the knife holder ascends, the compressed coil spring is released, so as to facilitate the ascent of the knife holder. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0016] Figure 2 This is a partial three-dimensional schematic diagram of the tool holder of the utility model;
[0017] Figure 3 This is a schematic diagram of the main structure of the utility model;
[0018] Figure 4 It is a schematic diagram of the partial main cross-sectional structure of the fixed base of the utility model.
[0019] Figure numerals: 1. fixed base; 2. mounting hole; 3. coil spring; 4. column; 5. cross plate; 6. lifting cylinder; 7. knife holder; 8. pressure plate; 9. elastic telescopic rod; 10. sliding sleeve; 11. hot cutting knife; 12. connecting plate; 13. positioning groove. DETAILED DESCRIPTION
[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
[0021] Example 1
[0022] like Figure 1-Figure 4 As shown, the utility model proposes a plastic box production trimming device, including a fixed base 1 and a horizontal plate 5. The upper surface of the fixed base 1 is provided with mounting holes 2 near the four corners. Bolts pass through the mounting holes 2 to fix the fixed base 1 in the use position. The two sides of the lower surface of the horizontal plate 5 are fixedly connected with columns 4, and the ends of the two columns 4 are respectively fixedly connected to the two sides of the upper surface of the fixed base 1. A positioning groove 13 is provided in the middle position of the upper surface of the fixed base 1. The positioning groove 13 is used for positioning and placing the plastic box. A lifting cylinder 6 is fixedly installed in the middle position of the upper surface of the horizontal plate 5. The end of the output shaft of the lifting cylinder 6 is fixedly connected to a connecting plate 12. A knife holder 7 is fixedly installed on the lower surface of the connecting plate 12. The shape of the knife holder 7 is consistent with the flange of the box mouth. A hot cutting knife 11 is fixedly installed on the lower surface of the knife holder 7 near the edge.
[0023] When the utility model is in use, the bottom of the plastic box is placed inside the positioning groove 13, and the lifting cylinder 6 drives the knife holder 7 to descend, so that the hot cutting knife 11 cuts off the burrs and the like on the edge of the entire box opening at one time. Moreover, since it is a hot cutting knife 11, the plastic burrs and the like will melt during the cutting process, and there will be no cracking and the like, so the incision is relatively smoother.
[0024] Example 2
[0025] like Figure 1-Figure 3 As shown, the present invention proposes a plastic box production trimming device. Compared with the first embodiment, this embodiment also includes sliding sleeves 10 fixedly installed on both sides of the outer surface of the tool holder 7, and the two sliding sleeves 10 are respectively slidably connected to the outer surfaces of the two columns 4, and the outer surfaces of the two columns 4 are movably connected to the positions below the two sliding sleeves 10. Coil springs 3 are movably connected.
[0026] In this embodiment, the sliding sleeve 10 guides the raising and lowering of the knife holder 7, thereby improving the stability of the knife holder 7 and the hot cutter 11, and the coil spring 3 is compressed when the knife holder 7 descends, and the compressed coil spring 3 is released when the knife holder 7 ascends, so as to facilitate the ascent of the knife holder 7.
[0027] The utility model is used
[0028] Example 3
[0029] like Figure 1-Figure 4 As shown, the present invention proposes a plastic box production trimming device. Compared with the first embodiment, this embodiment also includes an elastic telescopic rod 9 fixedly installed at the middle position of the lower surface of the connecting plate 12, and the end of the elastic telescopic rod 9 is fixedly connected to a pressure plate 8.
[0030] In this embodiment, during the descent of the knife holder 7, the pressure plate 8 first contacts the inner bottom of the plastic box, and as the knife holder 7 descends, the elastic telescopic rod 9 is compressed. When the hot cutter 11 completes the trimming of the box mouth flange, the knife holder 7 drives the hot cutter 11 to rise and separate from the box mouth flange. At this time, the compressed elastic telescopic rod 9 is released, and the plastic box is fixed in the positioning groove 13 through the elastic force, so as to facilitate the separation of the hot cutter 11 from the box mouth flange and prevent the box mouth flange from sticking to the hot cutter 11 and making the two unable to separate.
[0031] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A plastic box production trimming device, comprising a fixed base (1) and a transverse plate (5), characterized in that: The horizontal plate (5) is fixedly connected to columns (4) at both sides of the lower surface, and the ends of the two columns (4) are fixedly connected to the positions on both sides of the upper surface of the fixed base (1), respectively. A positioning groove (13) is provided at the middle position of the upper surface of the fixed base (1). A lifting cylinder (6) is fixedly installed at the middle position of the upper surface of the horizontal plate (5), and the end of the output shaft of the lifting cylinder (6) is fixedly connected to a connecting plate (12). A knife holder (7) is fixedly installed on the lower surface of the connecting plate (12), and a hot cutting knife (11) is fixedly installed near the edge of the lower surface of the knife holder (7).
2. A plastic box production trimming device according to claim 1, characterized in that: Mounting holes (2) are provided on the upper surface of the fixed base (1) near the four corners.
3. The plastic box production trimming device according to claim 1, characterized in that: Slide sleeves (10) are fixedly installed at both sides of the outer surface of the tool holder (7), and the two slide sleeves (10) are respectively slidably sleeved on the outer surfaces of the two columns (4).
4. A plastic box production trimming device according to claim 3, characterized in that: The outer surfaces of the two upright posts (4) are movably sleeved with coil springs (3) at positions below the two sliding sleeves (10).
5. The plastic box production trimming device according to claim 1, characterized in that: An elastic telescopic rod (9) is fixedly installed at the middle position of the lower surface of the connecting plate (12), and a pressing plate (8) is fixedly connected to the end of the elastic telescopic rod (9).