Film covering and packaging device for plastic pipe production

Abstract

The utility model relates to the technical field of plastic pipe packaging, and discloses a film covering and packaging device for plastic pipe production, a plastic pipe extrudes a packaging film located on the lower portion, the packaging film located on the lower portion is deformed to be attached to the groove wall of a lower die groove, and the packaging film is extruded by a groove channel of an upper die groove; the plastic pipe is deformed and attached to the groove wall of the upper die groove, the upper packaging film and the lower packaging film are tightly attached to the outer side wall of the plastic pipe in a semicircular mode, air between the upper packaging film and the lower packaging film is squeezed away, and the problems that the plastic pipe is loosely wrapped with the packaging films, the packaging films are wasted, and the plastic pipe slides in the loosely-wrapped packaging films are solved. And the packaging film is damaged.

Description

Technical Field

[0001] The present application relates to the technical field of plastic tube packaging, and in particular to a film-coating packaging device for plastic tube production. Background Art

[0002] After processing, plastic tubes need to be packaged with packaging film before long-distance transportation to reduce damage to the plastic tubes during transportation. Existing mechanical packaging will first produce the film into a packaging bag with only one end open, and then use a manual or mechanical push rod to put the plastic tube into the packaging bag, and then heat-seal or tie-seal the opening of the packaging bag.

[0003] In this way, since the packaging bags need to be produced in advance, the manufacturer needs to configure an additional packaging bag production machine, or order them from other packaging bag manufacturers, which is costly. In addition, the packaging bags produced in advance will have a larger diameter to facilitate the insertion of the plastic tube. As a result, a large amount of space will still remain in the packaging bag after the plastic tube is inserted, wasting a large amount of packaging bag raw materials. At the same time, the space between the plastic tube and the packaging bag makes it easier for the plastic tube to move relative to the packaging bag during transportation, increasing the probability of the plastic tube damaging the packaging bag from the inside. Utility Model Content

[0004] The present application proposes a film coating and packaging device for the production of plastic tubes, which is provided with an upper mold groove and a lower mold groove for buckling a packaging film and a plastic tube to directly generate a packaging bag for packaging the plastic tube. The packaging film is squeezed by the upper mold groove and the lower mold groove to be deformed and tightly attached to the plastic tube. The packaging film uses less material to wrap the plastic tube. The electric heating strip and the cutting heat-sealing plate heat-seal the squeezed and cut parts of the packaging film, and the cutting strip sprays a cooling airflow to quickly cool and solidify the heat-sealed parts. The device is used to solve the problems of the existing plastic tube packaging that the packaging bags need to be produced in advance, the packaging bags waste a lot of materials, and the packaging bags are damaged due to relative sliding between the packaging bags and the plastic tube.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a film coating and packaging device for plastic tube production, comprising a frame, two unwinding rollers movably sleeved on two side walls of the frame, two winding rollers, two groups of tensioning rollers and evenly distributed guide wheels, on which a plastic tube is placed; a packaging film roll movably sleeved on the unwinding roller, and the packaging film roll releases the packaging film to coat the plastic tube; a lower mold groove is arranged at the center of the frame, an upper mold groove is arranged above the lower mold groove, and the cross-sections of the lower mold groove and the upper mold groove are both semicircular, which are used to buckle and wrap the plastic tube to complete tight packaging; a hydraulic cylinder is connected to the top of the frame, a hydraulic rod is sleeved in the hydraulic cylinder, the bottom end of the hydraulic rod is fixedly connected to a suspension rod, and the bottom end of the suspension rod is connected to the top of the upper mold groove, which is used to drive the upper mold groove to move up and down.

[0006] Preferably, circular cutting and heat-sealing plates are fixedly connected to both ends of the upper mold groove, and electric heating strips are fixedly connected to the two bottom ends of the semicircular ring of the upper mold groove for heating and sealing the squeezed parts of the upper and lower packaging films.

[0007] Preferably, two symmetrical cutting strips are fixedly connected to the bottom of both sides of the outer side wall of the upper mold groove, and are used to cut the packaging film in the axial direction of the plastic tube.

[0008] Preferably, an exhaust hole is provided in the cutting strip, and the bottom end opening of the exhaust hole is inclined toward the top end of the lower mold groove, so as to output cooling airflow to the heat-sealed part.

[0009] Preferably, the top end of the suspension rod is fixedly connected to an air pump, the output end of the air pump is fixedly connected to an air pipe, the bottom end of the air pipe is fixedly connected to an air distribution pipe, the air distribution pipe is fixedly connected to the top center of the upper mold groove, the air distribution pipe is fixedly connected to a uniformly distributed skeleton tube, the skeleton tube is wrapped on the outer side wall of the upper mold groove, and the two ends of the skeleton tube are respectively connected to the exhaust holes inside the cutting strips on both sides.

[0010] This application has the following beneficial effects:

[0011] The present application provides a film coating and packaging device for plastic tube production, which wraps the plastic tube and the packaging film by combining the upper mold groove and the lower mold groove, so that the packaging film can be quickly wrapped on the plastic tube, thereby completing the efficient packaging of the plastic tube.

[0012] At the same time, the packaging film at the bottom is squeezed by the plastic tube, so that the packaging film at the bottom is deformed and fits on the groove wall of the lower mold groove, and the packaging film will be squeezed by the groove of the upper mold groove and deformed to fit on the groove wall of the upper mold groove, so that the upper and lower packaging films are respectively semicircular and tightly attached to the outer wall of the plastic tube, and the air between the upper and lower packaging films will also be squeezed away, avoiding the packaging film being loosely wrapped on the plastic tube, resulting in waste of packaging film and the plastic tube sliding in the loose packaging film, resulting in damage to the packaging film.

[0013] At the same time, cooling air is sprayed to the part of the packaging film sealed by hot air through the exhaust holes on the cutting strip, so that the heat-sealed part of the packaging film can be quickly cooled and solidified, avoiding the problem that the heat-sealed part of the packaging film solidifies slowly, and when the plastic tube moves out of the lower mold groove, the upper and lower packaging films are separated from the heat-sealed part, resulting in packaging failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0015] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure distribution of the utility model;

[0017] Figure 2 This is a schematic diagram of the location of the packaging film of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the upper die groove and the lower die groove of the utility model;

[0019] Figure 4 This is a schematic diagram of the structural position of the plastic pipe and the lower mold groove of the utility model;

[0020] Figure 5 This is a schematic diagram of the distribution of the skeleton tubes of the utility model;

[0021] Figure 6 This is a schematic diagram of the structural position of the electric heating strip and the cutting strip of the utility model.

[0022] Reference numerals:

[0023] 1. Frame; 2. Unwinding roller; 3. Packaging film roll; 31. Packaging film; 4. Rewinding roller; 5. Tensioning roller; 6. Guide wheel; 7. Lower die groove; 8. Hydraulic cylinder; 9. Hydraulic rod; 10. Hanging rod; 11. Upper die groove; 12. Cutting heat sealing plate; 13. Electric heating strip; 14. Cutting strip; 15. Exhaust hole; 16. Skeleton pipe; 17. Air distribution pipe; 18. Air pump; 19. Air supply pipe; 20. Plastic pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Embodiment 1

[0026] See also Figure 1 to Figure 2A film coating and packaging device for plastic tube production comprises a frame 1, two unwinding rollers 2, two winding rollers 4, two sets of tensioning rollers 5 and uniformly distributed guide wheels 6 movably sleeved on two side walls of the frame 1, a plastic tube 20 is placed on the guide wheel 6, and the plastic tube 20 is transported to the groove of the lower die groove 7 through the guide wheel 6. The rotation of the unwinding roller 2, the winding roller 4 and the guide wheel 6 is controlled by an existing motor. A packaging film roll 3 is movably sleeved on the unwinding roller 2, and the packaging film roll 3 will release a packaging film 31 to coat the plastic tube 20. The packaging film 31 will pass through the tensioning roller 5, and the tensioning roller 5 will adjust the tension of the packaging film 31. The cut packaging film 31 will be wound up on the winding roller 4.

[0027] See also Figure 1 The two unwinding rollers 2 are symmetrical about the center of the frame 1, and the two winding rollers 4 are symmetrical about the center of the frame 1, so that the packaging film rolls 3 on the two unwinding rollers 2 can respectively release a packaging film 31 above and below the plastic tube 20, so that when the upper mold groove 11 and the lower mold groove 7 are merged, the two packaging films 31 are buckled on the plastic tube 20 to complete the packaging of the plastic tube 20. At the same time, the two winding rollers 4 can merge the upper mold groove 11 and the lower mold groove 7 and then cut the remaining packaging film 31 for recycling. The unwinding rollers 2 and the winding rollers 4 are symmetrical about the center of the frame 1. A group of tensioning rollers 5 consists of two, and the two groups of tensioning rollers 5 are symmetrical about the center of the frame 1. The two of the tensioning rollers 5 in a group are symmetrical about the center of the frame 1.

[0028] See also Figures 1 to 4 A lower die groove 7 is fixedly connected to the center of the frame 1. The cross-section of the lower die groove 7 is semicircular and is used to initially receive the plastic tube 20 and maintain the position of the plastic tube 20 when being packaged. The packaging film 31 released by the packaging film roll 3 below passes through the groove of the lower die groove 7, and the plastic tube 20 is inserted into the groove of the lower die groove 7. The plastic tube 20 squeezes the packaging film 31 in the groove of the lower die groove 7 to fit on the groove wall of the lower die groove 7. The width of the packaging film 31 is greater than the diameter of the plastic tube 20, so that when the upper die groove 11 and the lower die groove 7 are merged, only a part of the packaging film 31 will be cut off to package the plastic tube 20, and the remaining part of the packaging film 31 can be rolled up onto the winding roller 4.

[0029] See also Figures 1 to 3, a hydraulic cylinder 8 is fixedly connected to the top of the frame 1, a hydraulic rod 9 is movably sleeved in the hydraulic cylinder 8, a suspension rod 10 is fixedly connected to the bottom end of the hydraulic rod 9, an upper die groove 11 is fixedly connected to the bottom end of the suspension rod 10, and the cross-section of the upper die groove 11 is semicircular, and the lengths of the lower die groove 7 and the upper die groove 11 are both greater than the length of the plastic tube 20, so that the plastic tube 20 can completely slide into the lower die groove 7 under the guidance of the guide wheel 6. At this time, the hydraulic rod 9 will drive the upper die groove 11 to be pressed down through the suspension rod 10, and buckle on the lower die groove 7 for cutting, heating and packaging. When the set packaging time is reached, the hydraulic rod 9 will drive the upper die groove 11 to be lifted up through the suspension rod 10 and separated from the lower die groove 7. At this time, the plastic tube 20 that moves forward subsequently will push the plastic tube 20 packaged in the lower die groove 7 to separate from the lower die groove 7.

[0030] See also Figures 1 to 3 , Figures 5 and 6 , circular cutting and heat-sealing plates 12 are fixedly connected at both ends of the upper mold groove 11, and only the bottom of the cutting and heat-sealing plates 12 can be heated, so that when the upper mold groove 11 merges downward with the lower mold groove 7, the cutting and heat-sealing plates 12 can cut the packaging films 31 at both ends of the plastic tube 20, and heat the cut portion, so that the upper packaging film 31 and the lower packaging film 31 can be heat-sealed from the cut portion, and high pressure and heat are used to complete rapid heat sealing. The bottom of the outer side wall of the upper mold groove 11 is fixedly connected with two pairs of The cutting strip 14 is called the cutting strip 14, and the two bottom ends of the semicircular ring of the upper mold groove 11 are fixedly connected with the electric heating strip 13. The upper mold groove 11 is located directly above the lower mold groove 7, so that when the upper mold groove 11 merges downward with the lower mold groove 7, the cutting strip 14 can cut the packaging film 31 in the axial direction of the plastic tube 20. At this time, the electric heating strip 13 is pressed on the packaging film 31, so that the upper packaging film 31 and the lower packaging film 31 can be heat-sealed from the place where the electric heating strip 13 is pressed, and rapid heat sealing is completed through high pressure and heat.

[0031] It is worth mentioning that the heating and sealing will only start after the cutting is completed. Before the upper mold groove 11 starts to leave the lower mold groove 7, the heating capacity of the electric heating strip 13 and the cutting heat sealing plate 12 will be turned off in advance.

[0032] Embodiment 2

[0033] See also Figures 5 and 6 On the basis of the first embodiment, an exhaust hole 15 is opened in the cutting strip 14, and the bottom end opening of the exhaust hole 15 is inclined toward the top of the lower mold groove 7, so that when the upper mold groove 11 is lifted upward and leaves the lower mold groove 7, the air flow discharged from the exhaust hole 15 can rush to the part heated and sealed by the electric heating strip 13, so that this part can be quickly cooled and solidified.

[0034] See also Figures 5 and 6The top of the hanging rod 10 is fixedly connected to an air pump 18, the output end of the air pump 18 is fixedly connected to an air pipe 19, the bottom end of the air pipe 19 is fixedly connected to an air distribution pipe 17, the air distribution pipe 17 is fixedly connected to the top center of the upper mold groove 11, and the air distribution pipe 17 is fixedly connected to a uniformly distributed skeleton tube 16, the skeleton tube 16 is wrapped on the outer wall of the upper mold groove 11, and the two ends of the skeleton tube 16 are respectively connected to the exhaust holes 15 inside the cutting strips 14 on both sides, so that the air pump 18 can output cooling airflow through the air pipe 19, the air distribution pipe 17, the skeleton tube 16 and the exhaust hole 15 to the part of the packaging film 31 that is heated and sealed by the electric heating strip 13.

Claims

1. A film-coating packaging device for plastic pipe production, characterized in that: It comprises a frame (1), two unwinding rollers (2) movably sleeved on two side walls of the frame (1), two winding rollers (4), two sets of tensioning rollers (5) and evenly distributed guide wheels (6), wherein a plastic tube (20) is placed on the guide wheels (6); The unwinding roller (2) is movably sleeved with a packaging film roll (3), and the packaging film roll (3) releases a packaging film (31) to perform film coating packaging on the plastic tube (20); A lower die groove (7) is arranged at the center of the frame (1), and an upper die groove (11) is arranged above the lower die groove (7). The cross sections of the lower die groove (7) and the upper die groove (11) are both semicircular and are used to buckle and wrap the plastic tube (20) to complete tight packaging. The top end of the frame (1) is connected to a hydraulic cylinder (8), a hydraulic rod (9) is sleeved in the hydraulic cylinder (8), the bottom end of the hydraulic rod (9) is fixedly connected to a suspension rod (10), and the bottom end of the suspension rod (10) is connected to the top end of the upper die groove (11) to drive the upper die groove (11) to move up and down.

2. A film-coating packaging device for plastic pipe production according to claim 1, characterized in that: The two ends of the upper die groove (11) are fixedly connected with circular cutting heat-sealing plates (12), and the two bottom ends of the semicircular ring of the upper die groove (11) are fixedly connected with electric heating strips (13) for heating and sealing the squeezed parts of the upper and lower packaging films (31).

3. The film-covering packaging device for plastic pipe production according to claim 1, characterized in that: Two symmetrical cutting strips (14) are fixedly connected to the bottom of both sides of the outer side wall of the upper mold groove (11) and are used to cut the packaging film (31) in the axial direction of the plastic tube (20).

4. A film-coating packaging device for plastic pipe production according to claim 3, characterized in that: An exhaust hole (15) is provided in the cutting strip (14), and the bottom end opening of the exhaust hole (15) is inclined toward the top end of the lower mold groove (7) for outputting cooling airflow to the heat-sealed part.

5. The film-covering packaging device for plastic pipe production according to claim 4, characterized in that: The top end of the suspension rod (10) is fixedly connected to an air pump (18), the output end of the air pump (18) is fixedly connected to an air delivery pipe (19), the bottom end of the air delivery pipe (19) is fixedly connected to an air distribution pipe (17), the air distribution pipe (17) is fixedly connected to the top center of the upper mold groove (11), and the air distribution pipe (17) is fixedly connected to the top of the upper mold groove (11). A uniformly distributed skeleton tube (16) is connected, and the skeleton tube (16) is wrapped on the outer side wall of the upper mold groove (11). The two ends of the skeleton tube (16) are respectively connected to the exhaust holes (15) inside the cutting strips (14) on both sides.

Images