Machine head of three-layer co-extrusion film blowing unit

Abstract

The utility model relates to the technical field of machine heads of film blowing units, in particular to a machine head of a three-layer co-extrusion film blowing unit, which comprises a material conveying pipe, a communicating pipe I is fixed on the surface of the upper end of the material conveying pipe, a filter pipe section I is fixed at one end, far away from the material conveying pipe, of the communicating pipe I, and a clamping groove is formed in the inner wall of the filter pipe section I; a filter screen plate is arranged above the clamping groove in the first filter pipe section, a second filter pipe section is arranged above the filter screen plate, mounting plates are fixed to the periphery of the first filter pipe section and the periphery of the second filter pipe section, through holes are formed in the surfaces of the mounting plates, fastening bolts are arranged in the through holes, and a protruding round edge is fixed to the surface of the bottom of the second filter pipe section. According to the machine head of the three-layer co-extrusion film blowing unit, through the arrangement of the filter pipe section I, the clamping groove, the filter screen plate, the filter pipe section II, the mounting plate, a through hole, a fastening bolt, a convex round edge, a sealing ring and an embedded groove, the use performance of filtering impurities of the machine head body is improved, and the production quality of the machine head body is integrally improved through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machine heads, in particular to a three-layer co-extrusion film blowing machine head. Background Art

[0002] Film blowing machine is a kind of equipment that heats and melts plastic particles and then blows them into film. The plastic film blowing machine mainly includes a screw extrusion mechanism and a film blowing machine head. The feeding mechanism melts the material and conveys it to the film blowing machine head to perform film blowing to realize the production of plastic film. There are many types of film blowing machines, including PE, POF, PVC, etc. Brand new particles are used to blow out new materials with uniform color, cleanness and good bag stretching.

[0003] For example, the utility model with application number CN202122082762.9 discloses a multi-layer co-extrusion film blowing machine head, which includes a head, bolts and a vertical pipe, the top outer wall of the head is threaded with a plurality of bolts, the top of the head is fixed with a vertical pipe, and the multi-layer co-extrusion film blowing machine head also includes: a conveying member is installed inside the bottom end of the head; a supporting member is installed on the outer wall of the head; and a fixing member is installed on both sides of the supporting member. The multi-layer co-extrusion film blowing machine head, through the coordinated use of a plug plate, a feed pipe, a threaded block, a fixed plate, a screw rod and a shell, can achieve the feeding work of the head, and can quickly replace and clean the screw rod at the same time, but the head is not easy to filter the material when mixing the material, but directly mixes the material, which easily mixes the impurities together, resulting in poor quality of the blown film.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a head of a three-layer co-extrusion film blowing unit is proposed. Utility Model Content

[0005] The utility model aims to provide a head of a three-layer co-extrusion film blowing machine unit to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a head of a three-layer co-extrusion film blowing unit, comprising a feed pipe, a connecting pipe 1 is fixed to the upper end surface of the feed pipe, a filter pipe section 1 is fixed to the end of the connecting pipe 1 away from the feed pipe, a card slot is provided on the inner wall of the filter pipe section 1, a filter screen plate is arranged above the card slot inside the filter pipe section 1, and a filter pipe section 2 is arranged above the filter screen plate, mounting plates are fixed around the filter pipe section 1 and the filter pipe section 2, and through holes are provided on the surface of the mounting plates, fastening bolts are arranged inside the through holes, a protruding round edge is fixed to the bottom surface of the filter pipe section 2, and a sealing ring is arranged on the bottom surface of the protruding round edge, and an embedding groove is provided on the top surface of the filter pipe section 1.

[0007] Furthermore, a connecting pipe 2 is fixed to a surface of the second filter pipe section away from the protruding circular edge, and an external thread layer is provided on the external surface of the connecting pipe 2.

[0008] Furthermore, the outer sleeve of the connecting pipe 2 is provided with a connecting ring 1, and the upper end of the connecting ring 1 is provided with a connecting ring 2.

[0009] Furthermore, a fixing seat is fixed on the upper side of the outer surface of the second connecting ring, and connecting shafts are arranged at both left and right ends of the fixing seat.

[0010] Furthermore, a connecting square ring is provided on the outside of the fixing seat, and the connecting square ring is rotatably connected to the fixing seat via a connecting rotating shaft.

[0011] Furthermore, a plug-in tube is provided at one end of the second connecting tube away from the second filtering tube section, and a limiting tube is fixed at the top end of the plug-in tube.

[0012] Furthermore, both left and right ends of the outer surface of the limiting tube are fixed with a holder, and the top end of the limiting tube is fixed with a head body.

[0013] The utility model provides a head of a three-layer co-extrusion film blowing unit, which has the following beneficial effects:

[0014] 1. The utility model facilitates the filtering of materials through the arrangement of the filter pipe section 1, the card slot, the filter screen plate, the filter pipe section 2, the mounting plate, the through hole, the fastening bolts, the protruding round edge, the sealing ring and the embedding groove, thereby avoiding direct mixing of the materials, which may result in poor quality of the film blown out of the machine head body, and thus can improve the overall use effect of the machine head body, and its structural design is also convenient for the installation and disassembly of the filter screen plate, thereby avoiding excessive accumulation of impurities on the surface of the filter screen plate, which may affect the use of the machine head body.

[0015] 2. The utility model facilitates the rapid installation and disassembly of the machine head body to reduce the waste of time through the arrangement of the connecting pipe 2, the external thread layer, the connecting ring 1, the connecting ring 2, the fixing seat, the connecting square ring, the plug-in pipe, the limit pipe and the clamping seat. The design structure is simple and convenient for people to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a head of a three-layer co-extrusion film blowing machine unit of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the connecting pipe 2 of the head of a three-layer co-extrusion film blowing unit of the utility model;

[0018] Figure 3This is a structural schematic diagram of a filter pipe section of a machine head of a three-layer co-extrusion film blowing machine unit of the utility model;

[0019] Figure 4 It is a structural schematic diagram of a connecting ring of a head of a three-layer co-extrusion film blowing machine unit of the utility model;

[0020] Figure 5 The utility model is a schematic diagram of the structure of the second filter pipe section of the head of a three-layer co-extrusion film blowing unit.

[0021] In the figure: 1. feed pipe; 2. connecting pipe 1; 3. filter pipe section 1; 4. slot; 5. filter screen; 6. filter pipe section 2; 7. mounting plate; 8. through hole; 9. fastening bolt; 10. protruding round edge; 11. sealing ring; 12. embedded groove; 13. connecting pipe 2; 14. external thread layer; 15. connecting ring 1; 16. connecting ring 2; 17. fixing seat; 18. connecting square ring; 19. plug-in pipe; 20. limit pipe; 21. slot; 22. machine head body. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] like Figure 1 , Figure 3 and Figure 5 As shown, a head of a three-layer co-extrusion film blowing unit includes a feed pipe 1, a connecting pipe 2 is fixed to the upper end surface of the feed pipe 1, a filter pipe section 3 is fixed to the end of the connecting pipe 2 away from the feed pipe 1, the feed pipe 1 is connected with the filter pipe section 3 through the connecting pipe 2, a card slot 4 is provided on the inner wall of the filter pipe section 3, the card slot 4 is convenient for installing a filter screen plate 5, a filter screen plate 5 is arranged above the card slot 4 inside the filter pipe section 3, the filter screen plate 5 is a conventional filter screen that can filter impurities in the prior art, and a filter pipe section 2 6 is arranged above the filter screen plate 5, and mounting plates 7 are fixed around the filter pipe section 3 and the filter pipe section 2 6, the mounting plates 7 are triangular in shape, and the mounting plates A through hole 8 is provided on the surface of 7, and a fastening bolt 9 is arranged inside the through hole 8. A protruding circular edge 10 is fixed to the bottom surface of the filter pipe segment 2 6, and a sealing ring 11 is arranged on the bottom surface of the protruding circular edge 10. The setting of the sealing ring 11 can improve the sealing performance of the filter pipe segment 1 3 after being connected with the filter pipe segment 2 6. An embedding groove 12 is provided on the top surface of the filter pipe segment 1 3, and the embedding groove 12 matches the protruding circular edge 10. Through the setting of the filter pipe segment 1 3, the card slot 4, the filter mesh plate 5, the filter pipe segment 2 6, the mounting plate 7, the through hole 8, the fastening bolt 9, the protruding circular edge 10, the sealing ring 11 and the embedding groove 12, it is convenient to filter the material to improve the use effect and performance of the head body 22.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, a connecting pipe 2 13 is fixed to the surface of one side of the filter pipe section 2 6 away from the protruding circular edge 10, and an external thread layer 14 is provided on the external surface of the connecting pipe 2 13, a connecting ring 15 is provided on the outside of the connecting pipe 2 13, and an internal thread layer matching the external thread layer 14 is provided on the inner wall of the connecting ring 15, and a connecting ring 2 16 is provided on the upper end of the connecting ring 15, and the top of the connecting ring 15 is rotatably connected to the bottom of the connecting ring 2 16, and a fixing seat 17 is fixed to the upper side of the external surface of the connecting ring 2 16, and the fixing seat 17 is symmetrically distributed about the vertical center axis of the connecting ring 2 16, and the shape of the fixing seat 17 is L-shaped, and connecting shafts are provided at both left and right ends of the fixing seat 17, and a connecting square is provided on the outside of the fixing seat 17. Ring 18, and the connecting square ring 18 is rotatably connected to the fixed seat 17 through a connecting shaft, a plug-in tube 19 is arranged at one end of the connecting pipe 13 away from the filter pipe section 2 6, and a limiting tube 20 is fixed to the top of the plug-in tube 19. The setting of the limiting tube 20 can limit the insertion length of the plug-in tube 19, and a clamping seat 21 is fixed to the left and right ends of the outer surface of the limiting tube 20, and a machine head body 22 is fixed to the top of the limiting tube 20. The plug-in tube 19 is connected with the machine head body 22 through the limiting tube 20, and the machine head body 22 is conveniently installed and disassembled quickly through the setting of the connecting pipe 2 13, the external threaded layer 14, the connecting ring 1 15, the connecting ring 2 16, the fixed seat 17, the connecting square ring 18, the plug-in tube 19, the limiting tube 20 and the clamping seat 21.

[0025] Working principle: The head of the three-layer co-extrusion film blowing unit first Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, in the structure shown in, during the installation of the head body 22, first align the plug-in tube 19 connected to the head body 22 with the connecting tube 13 on the filter tube section 6, and insert the plug-in tube 19 into the connecting tube 13. At this time, the limit tube 20 will limit the insertion length of the plug-in tube 19, and then the outer surface of the connecting ring 16 can be rotated, the connecting square ring 18 on the fixing seat 17, and the connecting square ring 18 can be sleeved on the clamping seat 21 on the outer surface of the limiting tube 20. At this time, the connecting square ring 18 is tilted and placed on the clamping seat 21. Then, the connecting ring 15 outside the connecting tube 13 is rotated. Under the drive of external force, the internal thread layer set on the inner wall of the connecting ring 15 will be threadedly connected with the external thread layer 14 set on the outer surface of the connecting tube 13, and the connecting ring 15 will move downward on the outer surface of the connecting tube 13. Because the connection between the connecting ring 15 and the connecting ring 2 16 is a rotating connection, When the connecting ring 15 is rotated and moves downward, it will drive the connecting ring 2 16 to move downward synchronously. As it moves, the inclined connecting square ring 18 will be gradually pulled into a vertical shape to complete the installation of the head body 22. Then, before the material enters the head body 22, it will first be transported by the feed pipe 1 and enter the interior of the connecting pipe 2. Then, it will enter the interior of the filter pipe section 3 through the connecting pipe 2. At this time, the material entering the interior will be filtered by the filter screen plate 5 and then enter the filter pipe section 2 6. Since the filter pipe section 2 6 is fixedly connected to the connecting pipe 2 13, the material will eventually enter the head body 22 and blow out the film. Because the filter screen plate 5 will continuously filter the material, certain impurities will accumulate on its surface. In order to ensure the normal use of the head body 22, the filter screen plate 5 can be removed regularly. At this time, the fastening bolts 9 passing through the through holes 8 on the mounting plate 7 are removed using tools, as shown in the accompanying drawings of the specification. Figure 1 As shown, the filter pipe segment 1 3 and the filter pipe segment 2 6 connected by this structure can be separated, and then the filter screen plate 5 clamped in the clamping groove 4 in the filter pipe segment 1 3 can be removed, and a new filter screen plate 5 can be replaced or the filter screen plate 5 can be cleaned and then installed in the filter pipe segment 1 3, and then the protruding round edge 10 at the bottom of the filter pipe segment 2 6 is aligned with the embedding groove 12 on the filter pipe segment 1 3, so that after the filter pipe segment 1 3 and the filter pipe segment 2 6 overlap, the protruding round edge 10 can also be clamped into the embedding groove 12, and then the filter pipe segment 1 3 and the filter pipe segment 2 6 are fixed by tightening bolts 9, and the head body 22 can be used again.

[0026] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A head of a three-layer co-extrusion film blowing machine unit, comprising a feed pipe (1), characterized in that: A connecting pipe (2) is fixed to the upper end surface of the feed pipe (1), and a filter pipe section (3) is fixed to the end of the connecting pipe (2) away from the feed pipe (1). A slot (4) is provided on the inner wall of the filter pipe section (3). A filter screen plate (5) is provided above the slot (4) inside the filter pipe section (3), and a filter pipe section (6) is provided above the filter screen plate (5). A mounting plate (7) is fixed around the filter pipe section (3) and the filter pipe section (6), and a through hole (8) is provided on the surface of the mounting plate (7). A fastening bolt (9) is provided inside the through hole (8). A protruding round edge (10) is fixed to the bottom surface of the filter pipe section (6), and a sealing ring (11) is provided on the bottom surface of the protruding round edge (10). An embedding groove (12) is provided on the top surface of the filter pipe section (3).

2. The die head of a three-layer co-extrusion film blowing unit according to claim 1, characterized in that: A connecting pipe 2 (13) is fixed to a surface of the second filter pipe section (6) away from the protruding circular edge (10), and an external thread layer (14) is provided on the external surface of the connecting pipe 2 (13).

3. The die head of a three-layer co-extrusion film blowing unit according to claim 2, characterized in that: The outer sleeve of the connecting pipe 2 (13) is provided with a connecting ring 1 (15), and the upper end of the connecting ring 1 (15) is provided with a connecting ring 2 (16).

4. The die head of a three-layer co-extrusion film blowing unit according to claim 3, characterized in that: A fixing seat (17) is fixed on the upper side of the outer surface of the second connecting ring (16), and connecting shafts are arranged at both left and right ends of the fixing seat (17).

5. The die head of a three-layer co-extrusion film blowing unit according to claim 4, characterized in that: A connecting square ring (18) is arranged outside the fixing seat (17), and the connecting square ring (18) is rotatably connected to the fixing seat (17) via a connecting rotating shaft.

6. The die head of a three-layer co-extrusion film blowing unit according to claim 2, characterized in that: An inserting tube (19) is provided at one end of the second connecting tube (13) away from the second filtering tube section (6), and a limiting tube (20) is fixed at the top end of the inserting tube (19).

7. The die head of a three-layer co-extrusion film blowing unit according to claim 6, characterized in that: A clamping seat (21) is fixed to both left and right ends of the outer surface of the limiting tube (20), and a head body (22) is fixed to the top end of the limiting tube (20).

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