Polypropylene packing belt extrusion molding equipment

Abstract

The utility model relates to the field of packing belt processing, in particular to polypropylene packing belt extrusion molding equipment which comprises an extrusion box, a plurality of extrusion grooves are formed in the lower end of the extrusion box, a limiting rail is fixedly connected to the lower end of the extrusion box, a baffle is slidably connected into the limiting rail, and a plurality of leakage grooves are formed in the baffle. A rack is fixedly connected to the lower end of the baffle, a gear is rotationally connected to the extrusion box, the gear and the rack are in meshing transmission, a header is fixedly connected to the rack, a graduated scale is arranged on the extrusion box, and a hand wheel is fixedly connected to the gear. According to the device, the width of a packing belt can be adjusted according to production requirements, and the die head does not need to be replaced.

Description

Technical Field

[0001] The utility model relates to the field of strapping tape processing, in particular to a polypropylene strapping tape extrusion molding device. Background Art

[0002] Strapping tape is also known as binding tape; strapping tape for packaging is made of polyethylene, polypropylene resin, cold-rolled strip steel as the main raw materials, and also made of nylon and polyester as raw materials. It is made by extrusion, uniaxial stretching, and heat treatment and bluing; when using polypropylene to process strapping tape, a single-screw extruder is required to extrude the molten polypropylene into shape, but conventional single-screw extruders can only process strapping tape of fixed width. If the width of the extruded strapping tape needs to be changed, the die head of the single-screw extruder needs to be replaced, which wastes time. Utility Model Content

[0003] The utility model provides a polypropylene strapping tape extrusion molding device. The device can adjust the width of the strapping tape according to production requirements without replacing the die head.

[0004] A polypropylene strapping tape extrusion molding device comprises an extrusion box, a plurality of extrusion slots are provided at the lower end of the extrusion box, a limiting track is fixedly connected to the lower end of the extrusion box, a baffle is slidably connected in the limiting track, and a plurality of leakage slots are provided on the baffle.

[0005] The lower end of the baffle is fixedly connected with a rack, and the extrusion box is rotatably connected with a gear, and the gear and the rack are meshed for transmission.

[0006] A header is fixedly connected to the rack, and a scale is provided on the extrusion box.

[0007] A hand wheel is fixedly connected to the gear.

[0008] A feed pipe is fixedly connected to the extrusion box.

[0009] The feed pipe is provided with a plurality of threaded holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 and Figure 2 It is a schematic diagram of the overall structure of a polypropylene strapping tape extrusion molding equipment;

[0012] Figure 3 It is a structural schematic diagram of the extrusion box;

[0013] Figure 4 is a schematic diagram of the structure of the baffle;

[0014] Figure 5 A schematic diagram of the gear structure. DETAILED DESCRIPTION

[0015] See also Figure 1-4 A polypropylene strapping tape extrusion molding device includes an extrusion box 101, a plurality of extrusion grooves 103 are opened at the lower end of the extrusion box 101, a limiting track 104 is fixedly connected to the lower end of the extrusion box 101 by bolts, a baffle 201 is slidably connected in the limiting track 104, and a plurality of leakage grooves 202 are opened on the baffle 201.

[0016] When using the molding equipment, the extrusion box 101 is first connected to the single-screw extruder, and then the molten polypropylene is added to the extrusion box 101 by the single-screw extruder, and finally extruded through multiple extrusion troughs 103. The extruded polypropylene is in strip shape and is processed into a strapping tape after cooling.

[0017] Before extruding the strapping tape, the baffle 201 is controlled to slide in the limiting track 104 so that the polypropylene is extruded through the overlapping portion of the leakage slot 202 and the extrusion slot 103, thereby realizing the function of adjusting the strapping tape width. Compared with conventional strapping tape extrusion molding equipment, the present equipment can process strapping tapes of different widths by simply adjusting the sliding of the baffle 201, which is convenient and fast, and can be temporarily adjusted according to production needs without replacing the die head, thus saving time.

[0018] See also Figure 4-5 The lower end of the baffle 201 is fixedly connected with a rack 203 by bolts, and the extrusion box 101 is rotatably connected with a gear 302 through a bearing, and the gear 302 is meshed with the rack 203 for transmission.

[0019] The gear 302 is controlled to rotate to drive the rack 203 to move, and then drive the baffle 201 to slide in the limiting track 104 to achieve the function of adjusting the width of the strapping tape. The cooperation between the gear 302 and the rack 203 makes it convenient for the staff to adjust the width of the strapping tape on the extrusion box 101.

[0020] See also Figure 1-4 A header 204 is fixedly connected to the rack 203 by bolts, and a scale 105 is provided on the extrusion box 101.

[0021] The staff controls the baffle 201 to slide by the cooperation of the gear 302 and the rack 203. When adjusting, the staff can accurately judge the width of the adjusted strapping tape by observing the position of the header 204 on the scale 105.

[0022] See also Figure 5 The hand wheel 301 is fixedly connected to the gear 302 by bolts. The staff can drive the gear 302 to rotate by manually operating the hand wheel 301, thereby facilitating the manual operation of the baffle 201 to slide.

[0023] See also Figure 2 A feed pipe 102 is welded and fixedly connected to the extrusion box 101, and the feed pipe 102 facilitates the connection of the extrusion box 101 with the single-screw extruder.

[0024] See also Figure 2 The feed pipe 102 is provided with a plurality of threaded holes, and the feed pipe 102 can be fixed to the discharge pipe of the single-screw extruder by inserting bolts into the plurality of threaded holes.

[0025] See also Figure 2 A sealing ring is provided on the cross section of the feed pipe 102, and the sealing ring serves to seal the connection between the feed pipe 102 and the single-screw extruder.

[0026] See also Figure 2 The lengths of the multiple leakage grooves 202 are all greater than the lengths of the multiple extrusion grooves 103, so that the polypropylene can be completely extruded through the extrusion grooves 103, so that the size of the strapping tape can reach the maximum width.

[0027] See also Figure 4 The widths of the multiple grooves 202 are the same as the widths of the multiple extrusion grooves 103, which can prevent the polypropylene from contacting the baffle 201 during extrusion and preventing it from sticking to the baffle 201.

[0028] See also Figure 4 The header 204 is made of stainless steel. The stainless steel header 204 has high temperature resistance and prevents the header 204 from being deformed by heat.

Claims

1. A polypropylene strapping tape extrusion molding device, characterized in that: The invention comprises an extrusion box (101), wherein a plurality of extrusion slots (103) are provided at the lower end of the extrusion box (101), a limiting track (104) is fixedly connected to the lower end of the extrusion box (101), a baffle (201) is slidably connected in the limiting track (104), and a plurality of leakage slots (202) are provided on the baffle (201).

2. A polypropylene strapping tape extrusion molding device according to claim 1, characterized in that: The lower end of the baffle (201) is fixedly connected to a rack (203), and the extrusion box (101) is rotatably connected to a gear (302), and the gear (302) and the rack (203) are meshed for transmission.

3. A polypropylene strapping tape extrusion molding device according to claim 2, characterized in that: A header (204) is fixedly connected to the rack (203), and a scale (105) is provided on the extrusion box (101).

4. A polypropylene strapping tape extrusion molding device according to claim 3, characterized in that: The gear (302) is fixedly connected to a hand wheel (301).

5. The polypropylene strapping tape extrusion molding equipment according to claim 1, characterized in that: The extrusion box (101) is fixedly connected with a feed pipe (102).

6. A polypropylene strapping tape extrusion molding device according to claim 5, characterized in that: The feed pipe (102) is provided with a plurality of threaded holes.

7. A polypropylene strapping tape extrusion molding device according to claim 6, characterized in that: A sealing ring is provided on the cross section of the feed pipe (102).

8. The polypropylene strapping tape extrusion molding equipment according to claim 1, characterized in that: The lengths of the plurality of leakage grooves (202) are all greater than the lengths of the plurality of extrusion grooves (103).

9. The polypropylene strapping tape extrusion molding equipment according to claim 2, characterized in that: The widths of the plurality of drain grooves (202) are all the same as the widths of the plurality of extrusion grooves (103).

10. The polypropylene strapping tape extrusion molding equipment according to claim 3, characterized in that: The header (204) is made of stainless steel.

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