Multi-layer co-extrusion film blowing forming equipment for environment-friendly packaging bag

Abstract

The invention relates to the field of environment-friendly packaging bag co-extrusion film blowing processing, in particular to environment-friendly packaging bag multi-layer co-extrusion film blowing forming equipment. The environment-friendly packaging bag multi-layer co-extrusion film blowing forming equipment comprises an outer positioning frame and further comprises an adjustable supporting mechanism, the outer positioning frame is integrally in a barrel shape, a plurality of rotatable adjustable foam stabilizing rods are arranged in the outer positioning frame, the adjustable supporting mechanism is installed on the outer positioning frame and comprises a plurality of installation rods, and the installation rods are arranged on the outer positioning frame. A transmission part is used for driving all the mounting rods to synchronously rotate in the same direction, and a plurality of adjustable bubble stabilizing rods are mounted on any mounting rod; and any one of the mounting rods is provided with one group of auxiliary air cooling assemblies. According to the multi-layer co-extrusion film blowing forming equipment for the environment-friendly packaging bag, synchronous and same-direction rotating adjustment of all the adjustable bubble stabilizing rods can be achieved, the equipment is suitable for machining of different types of films, and meanwhile the overall production and use cost of the equipment is lower.

Description

Technical Field

[0001] This invention relates to the field of co-extrusion blown film processing for environmentally friendly packaging bags, and more particularly to a multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags. Background Technology

[0002] A co-extrusion blown film unit is an automated production line that uses co-extrusion and blow molding technology to extrude two or more plastic melts through a common die in a molten state and blow them into a tubular film.

[0003] A complete co-extrusion blown film unit includes an extrusion system, a co-extrusion die system, a blow-up and cooling system, a traction system, and a winding system. In actual use, various raw materials are fed into each extruder separately, while multiple extruders share a single die, thereby extruding a multi-layered film. The film is then blown into a tubular preform, which is guided by a bubble stabilizer and finally enters the winding area, where it is wound up using a winding roller.

[0004] The traction system (bubble stabilizer) in this unit has an outer frame structure with multiple bubble stabilizers inside. Traditional bubble stabilizers include fixed and adjustable types. Fixed bubble stabilizers have their internal bubble stabilizers fixed and cannot be adjusted. This type of stabilizer has limited applicability and cannot be adjusted according to die size, blow-up ratio, etc. Adjustable bubble stabilizers, on the other hand, allow for adjustment of the bubble stabilizers' angles using cylinders and hinges, thus adapting to different film bubbles. However, they require multiple drive components, resulting in higher production costs.

[0005] Therefore, it is necessary to provide a new environmentally friendly multi-layer co-extrusion blown film forming equipment for packaging bags to solve the above-mentioned technical problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides an environmentally friendly packaging bag multi-layer co-extrusion blown film forming equipment.

[0007] The environmentally friendly packaging bag multi-layer co-extrusion blown film forming equipment provided by the present invention includes an outer positioning frame, which is cylindrical in shape and has multiple rotatable and adjustable bubble stabilizing rods inside. It also includes:

[0008] An adjustable support mechanism is installed on an external positioning frame. The adjustable support mechanism includes multiple ring-shaped, vertically arranged mounting rods, and uses a transmission component to drive each mounting rod to rotate synchronously in the same direction. Multiple adjustable bubble stabilizing rods are installed on any one of the mounting rods.

[0009] An auxiliary air-cooling assembly is installed on each of the mounting rods for air-cooling the membrane bubble.

[0010] Preferably, the outer positioning frame includes a bottom ring frame and a top ring frame with the same structure and symmetrical arrangement. Multiple ring-shaped support rods are fixed between the bottom ring frame and the top ring frame, which together form a cylindrical frame with an internal storage space.

[0011] The bottom ring frame includes an outer ring body with a U-shaped cross-section. An inner bracket is welded and fixed to the inner circumference of the outer ring body, so that an installation area is formed between the area above the inner bracket and the inner wall of the outer ring body. Multiple ring-shaped positioning feet are also welded and fixed to the inner circumference of the inner bracket.

[0012] Preferably, the mounting rod is rotatably mounted on the positioning foot plate;

[0013] Meanwhile, the transmission component includes gears concentrically welded to the mounting rod, and a positioning ring located in the mounting area is fixed above the inner bracket. A concentrically set, rotatable transmission ring is installed on the positioning ring. The inner circumference of the transmission ring has multiple segments of teeth, and each segment of teeth meshes with a gear for transmission.

[0014] Preferably, the upper end face of the positioning ring has multiple annularly distributed grooves, and a ball is installed inside each groove, while the lower end face of the transmission ring has a groove that matches the ball.

[0015] Preferably, a positioning plate is bolted to the outer ring body, a motor is bolted to the positioning plate, a drive sprocket is fixed to the output end of the motor, and a driven sprocket is fixed to one of the mounting rods. The driven sprocket and the drive sprocket are connected by a transmission chain.

[0016] Preferably, the adjustable bubble stabilizer includes a clamp, which is composed of two semi-annular clamps. The two clamps are clamped to the mounting rod and fixed by bolts. A fixing block is bolted to the outer circumference of one of the clamps, and a baffle is rotatably mounted on one side of the fixing block.

[0017] The baffle has multiple arrayed protrusions on one side and multiple obliquely placed rubber scrapers on the other side that can contact the membrane bubble. Both the protrusions and the scrapers can contact the membrane bubble, so that the baffle can be rotated 180° to switch between the protrusions and the scrapers.

[0018] Preferably, the scraper and the baffle have a certain included angle, so that a guide groove is formed between the scraper and the baffle.

[0019] Preferably, the auxiliary air-cooling component includes a positioning seat, which is fixed to the mounting rod. A fixing frame is bolted to the positioning seat, and a guide tube is snapped into the fixing frame. One end of the guide tube has an external connecting pipe, which can be connected to an air supply device or pipeline. A nozzle is fixed to the other end of the guide tube.

[0020] Preferably, the output port of the nozzle is elongated and oriented towards the tangential direction of the membrane bubble.

[0021] Compared with related technologies, the multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags provided by this invention has the following beneficial effects:

[0022] 1. In the adjustable support mechanism, the motor drives one of the mounting rods through the transmission of sprockets and chains. The mounting rod drives the transmission ring to rotate through gear transmission. The rotation of the transmission ring can drive the remaining mounting rods to rotate. The mounting rod is the basic structure for installing the adjustable bubble stabilizer rods, thereby realizing the synchronous and unidirectional rotation adjustment of each adjustable bubble stabilizer rod, making it suitable for different types of film processing. At the same time, its overall production and use costs will be lower.

[0023] 2. In the adjustable bubble stabilizer, an array of protrusions and scrapers are set on both sides of the baffle. The baffle can be rotated 180° to replace or adjust the protrusions or scrapers. The protrusions reduce contact friction with the membrane bubble to avoid scratches on the membrane bubble surface and provide better protection for the membrane bubble. The scraper can contact and scrape off condensate or deposits adhering to the membrane bubble surface, cleaning and tidying the membrane bubble. The flip-type design enhances its functionality and applicability.

[0024] 3. The auxiliary air-cooling component is mounted on the mounting rod, and its output port is along the length of the baffle. Therefore, its output port can always be along the tangent of the membrane bubble. When cooling and shaping the membrane bubble, the pressure on the membrane bubble can be reduced, making the membrane bubble traction process more stable. Attached Figure Description

[0025] Figure 1 A schematic diagram of a preferred embodiment of the multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the bottom ring frame and the adjustable support mechanism as shown in this invention.

[0027] Figure 3 This is a schematic diagram of the bottom ring frame structure shown in the present invention;

[0028] Figure 4 This is a schematic diagram of the adjustable support mechanism shown in the present invention. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the adjustable support mechanism shown in the present invention. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the adjustable bubble stabilizer bar shown in this invention. Figure 1 ;

[0031] Figure 7 This is a schematic diagram of the adjustable bubble stabilizer bar shown in this invention. Figure 2 ;

[0032] Figure 8 This is a schematic diagram of the auxiliary air-cooling component shown in this invention.

[0033] The diagram labels are as follows: 1. Outer positioning frame; 11. Bottom ring frame; 111. Outer ring body; 112. Inner bracket; 113. Positioning foot plate; 12. Top ring frame; 13. Support rod;

[0034] 2. Adjustable support mechanism; 21. Mounting rod; 22. Gear; 23. Positioning ring; 24. Groove; 25. Ball bearing; 26. Transmission ring; 27. Roller groove; 28. Tooth; 29. ​​Positioning plate; 210. Motor; 211. Drive sprocket; 212. Driven sprocket; 213. Transmission chain;

[0035] 3. Adjustable bubble stabilizer; 31. Clamp; 32. Fixing block; 33. Baffle; 34. Protrusion; 35. Scraper; 36. Flow guide channel;

[0036] 4. Auxiliary air-cooling components; 41. Positioning seat; 42. Fixing bracket; 43. Guide pipe; 44. External pipe; 45. Nozzle. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0039] Please see Figures 1 to 8 The present invention provides an environmentally friendly packaging bag multi-layer co-extrusion blown film forming equipment, which includes an outer positioning frame 1, an adjustable support mechanism 2, an adjustable bubble stabilizing rod 3, and an auxiliary air cooling component 4.

[0040] It should be noted that this device is the traction system in the entire co-extrusion blown film unit. Other systems or components in the entire unit are not shown in the figure, and the operation process of this unit will not be described in detail here either.

[0041] For external positioning frame 1;

[0042] Please see Figure 3 The outer positioning frame 1 includes a bottom ring frame 11 and a top ring frame 12 with the same structure and symmetrical arrangement. Multiple ring-shaped support rods 13 are fixed between the bottom ring frame 11 and the top ring frame 12, which together form a cylindrical frame with internal storage space.

[0043] The bottom ring frame 11 includes an outer ring body 111 with a U-shaped cross section. An inner bracket 112 is welded and fixed to the inner circumference of the outer ring body 111, so that an installation area is formed between the area above the inner bracket 112 and the inner wall of the outer ring body 111. Multiple ring-shaped positioning feet 113 are also welded and fixed to the inner circumference of the inner bracket 112.

[0044] It should be noted that the outer positioning frame 1 is composed of a bottom ring frame 11, a top ring frame 12 and multiple support rods 13 forming a basic support frame. The frame is cylindrical in shape to provide stable support for other internal structures, while the interior allows the membrane bubble to pass through in order to position the membrane bubble.

[0045] For adjustable support mechanism 2;

[0046] Please see Figure 4 and Figure 5 The adjustable support mechanism 2 includes multiple ring-shaped, vertically arranged mounting rods 21. The mounting rods 21 are rotatably mounted on the positioning foot plate 113. Gears 22 are welded and fixed on the mounting rods 21. A positioning ring 23 located in the installation area is also fixed above the inner bracket 112. A concentrically arranged, rotatable transmission ring 26 is mounted on the positioning ring 23. The inner circumference of the transmission ring 26 has multiple teeth 28, and each tooth 28 meshes with a gear 22 for transmission.

[0047] The upper end face of the positioning ring 23 has multiple annularly distributed grooves 24, and a ball 25 is installed inside any one of the grooves 24. The lower end face of the transmission ring 26 has a groove 27 that matches the ball 25.

[0048] A positioning plate 29 is bolted to the outer ring 111, and a motor 210 is bolted to the positioning plate 29. A drive sprocket 211 is fixed to the output end of the motor 210, and a driven sprocket 212 is fixed to one of the mounting rods 21. The driven sprocket 212 and the drive sprocket 211 are connected by a transmission chain 213.

[0049] It should be noted that: for the adjustable support mechanism 2, its transmission structure includes a gear 22 fixed on the mounting rod 21 and a transmission ring 26 mounted on the bottom ring frame 11. The inner circumference of the transmission ring 26 has multiple teeth 28, and each tooth 28 is connected to a gear 22. Therefore, when the transmission ring 26 rotates, it can drive each gear 22 to rotate synchronously and in the same direction, thereby driving each mounting rod 21 to rotate synchronously.

[0050] Meanwhile, a positioning plate 29 is also installed on the bottom ring frame 11. The positioning plate 29 serves as the carrier structure of the motor 210. The output end of the motor 210 has a drive sprocket 211. The motor 210 can directly drive the drive sprocket 211 to rotate. A driven sprocket 212 is also installed on one of the mounting rods 21. The drive sprocket 211 and the driven sprocket 212 are connected by a transmission chain 213. Therefore, when the motor 210 is running, it can drive the mounting rod 21 to rotate through the sprocket chain transmission. When the mounting rod 21 rotates, it drives the transmission ring 26 to rotate through the gear 22. The rotation of the transmission ring 26 can drive the remaining gears 22 to rotate synchronously, realizing the synchronous rotation of each mounting rod 21. Therefore, the synchronous rotation of each mounting rod 21 can be achieved through a set of drive mechanisms and transmission structures, and its overall production and usage costs will be lower.

[0051] The transmission ring 26 is mounted on the positioning ring 23, which is fixed in the mounting area on the inner bracket 112. The positioning ring 23 is stabilized by the dual positioning of the outer ring body 111 and the inner bracket 112. The positioning ring 23 has multiple annularly distributed grooves 24, and each groove 24 contains a ball 25. The lower end of the transmission ring 26 has a corresponding groove 27, which allows the ball 25 to support the transmission ring 26. The friction between the ball 25 and the transmission ring 26 is relatively small, thus enabling the transmission ring 26 to rotate more effectively.

[0052] For the adjustable bubble stabilizer 3;

[0053] Please see Figure 6 and Figure 7 The adjustable bubble stabilizer rod 3 includes a clamp 31, which is composed of two semi-annular clamps. The two clamps are clamped on the mounting rod 21 and fixed by bolts. A fixing block 32 is bolted to the outer circumference of one of the clamps. A baffle 33 is rotatably installed on one side of the fixing block 32.

[0054] The baffle 33 has multiple arrayed protrusions 34 on one side and multiple obliquely placed rubber scrapers 35 on the other side that can contact the membrane bubble. Both the protrusions 34 and the scrapers 35 can contact the membrane bubble, so that the 180° rotation of the baffle 33 can be used to switch between the protrusions 34 and the scrapers 35. The scrapers 35 and the baffle 33 also have a certain angle, so that a guide groove 36 is formed between the scrapers 35 and the baffle 33.

[0055] It should be noted that: for the adjustable bubble stabilizer 3, its clamp 31 is a basic fixed structure. The clamp 31 is composed of two semi-annular clamps, which are fixed to the mounting rod 21 by bolts. This design makes it adjustable and detachable, and more flexible. Therefore, when the mounting rod 21 rotates, it can directly drive the adjustable bubble stabilizer 3 to rotate, so as to realize the adjustment of each adjustable bubble stabilizer 3.

[0056] Meanwhile, a fixing block 32 is installed on it by bolts. The fixing block 32 is the mounting base of the baffle 33. Therefore, the baffle 33 can also be disassembled separately. The baffle 33 is the main limiting structure used to limit the membrane bubble to avoid large fluctuations and displacements of the membrane bubble.

[0057] The baffle 33 has a protrusion 34 on one side and a scraper 35 on the other side. The protrusion 34 is arranged in an array and can directly contact the membrane bubble, which can reduce friction between the membrane bubble and the baffle. Its protrusion design can reduce friction between the membrane bubble and the baffle, and while limiting the membrane bubble, it can reduce surface scratches and protect the membrane bubble. The scraper 35 is made of rubber and can also contact the membrane bubble to scrape off condensate or other attached liquids on the surface of the membrane bubble, which can improve the overall processing quality of the membrane bubble. Moreover, there is a certain angle between the scraper 35 and the baffle 33, which forms a guide groove 36, which can guide the scraped liquid out along the guide groove 36. The rotation adjustment of the baffle 33 can be selected as manual adjustment or designed as automatic mechanical adjustment.

[0058] For auxiliary air-cooling component 4;

[0059] Please see Figure 8 The auxiliary air-cooling component 4 includes a positioning seat 41, which is fixed to the mounting rod 21. A fixing bracket 42 is bolted to the positioning seat 41. A guide tube 43 is snapped into the fixing bracket 42. One end of the guide tube 43 has an external connecting pipe 44, which can be connected to an external air supply device or pipeline. The other end of the guide tube 43 is fixed with a nozzle 45. The output port of the nozzle 45 is elongated and faces the tangential direction of the membrane bubble.

[0060] It should be noted that: for the auxiliary air-cooling component 4, its positioning seat 41 and fixing frame 42 form a basic positioning structure, and the guide pipe 43, outer pipe 44 and nozzle 45 form an air supply guide structure. The positioning seat 41 is fixed on the mounting rod 21. Therefore, the entire air supply guide structure can rotate together with the mounting rod 21 to adjust the orientation of the air outlet. Its air outlet is along the length of the baffle 33. Therefore, no matter how the air supply guide structure rotates, its air outlet is always along the tangent of the membrane bubble. While achieving cooling of the membrane bubble area, it will not exert strong pressure on the membrane bubble, making the membrane bubble more stable during the traction process.

[0061] The external pipe 44 can be connected to an air pump or an air supply pipe for airflow input, while the outlet port of the nozzle 45 is a vertical strip, which makes its air outlet range longer in the vertical direction, covering a larger area and providing better cooling effect for the membrane bubble.

[0062] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags, comprising an outer positioning frame (1), the outer positioning frame (1) being cylindrical in shape, and having multiple rotatable and adjustable bubble stabilizing rods (3) inside, characterized in that, Also includes: Adjustable support mechanism (2), the adjustable support mechanism (2) is installed on the outer positioning frame (1), the adjustable support mechanism (2) includes multiple ring-shaped and vertically arranged mounting rods (21), and uses a transmission component to drive each mounting rod (21) to rotate synchronously in the same direction, and multiple adjustable bubble stabilizing rods (3) are installed on any one of the mounting rods (21); Auxiliary air-cooling assembly (4): Each of the mounting rods (21) is equipped with an auxiliary air-cooling assembly (4) for air-cooling the membrane bubble.

2. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 1, characterized in that, The outer positioning frame (1) includes a bottom ring frame (11) and a top ring frame (12) with the same structure and symmetrical arrangement. Multiple ring-shaped support rods (13) are fixed between the bottom ring frame (11) and the top ring frame (12), which together form a cylindrical frame with internal storage space. The bottom ring frame (11) includes an outer ring body (111) with a U-shaped cross section. An inner bracket (112) is welded and fixed to the inner circumference of the outer ring body (111), so that an installation area is formed between the area above the inner bracket (112) and the inner wall of the outer ring body (111). A plurality of ring-shaped positioning feet (113) are also welded and fixed to the inner circumference of the inner bracket (112).

3. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 1, characterized in that, The mounting rod (21) is rotatably mounted on the positioning foot plate (113); Meanwhile, the transmission component includes a gear (22) concentrically welded to the mounting rod (21), and a positioning ring (23) located in the mounting area is fixed above the inner bracket (112). A concentrically set, rotatable transmission ring (26) is installed on the positioning ring (23). The inner circumference of the transmission ring (26) has multiple teeth (28), and each tooth (28) meshes with a gear (22) for transmission.

4. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 3, characterized in that, The upper end face of the positioning ring (23) has a plurality of annularly distributed grooves (24), and a ball (25) is installed inside any one of the grooves (24). The lower end face of the transmission ring (26) has a groove (27) that matches the ball (25).

5. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 1, characterized in that, A positioning plate (29) is bolted to the outer ring (111), and a motor (210) is bolted to the positioning plate (29). The output end of the motor (210) is fixed with a drive sprocket (211), and a driven sprocket (212) is fixed to one of the mounting rods (21). The driven sprocket (212) and the drive sprocket (211) are connected by a transmission chain (213).

6. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 1, characterized in that, The adjustable bubble stabilizer rod (3) includes a clamp (31), which is composed of two semi-annular clamps. The two clamps are clamped on the mounting rod (21) and fixed by bolts. A fixing block (32) is bolted to the outer circumference of one of the clamps. A baffle (33) is rotatably installed on one side of the fixing block (32). The baffle (33) has multiple arrayed protrusions (34) on one side and multiple obliquely placed rubber scrapers (35) that can contact the membrane bubble on the other side. Both the protrusions (34) and the scrapers (35) can contact the membrane bubble, so that the 180° rotation of the baffle (33) can be used to switch between the protrusions (34) and the scrapers (35).

7. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 6, characterized in that, The scraper (35) and the baffle (33) also have a certain included angle, so that a guide groove (36) is formed between the scraper (35) and the baffle (33).

8. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 1, characterized in that, The auxiliary air-cooling component (4) includes a positioning seat (41), which is fixed on the mounting rod (21). A fixing frame (42) is bolted on the positioning seat (41). A guide pipe (43) is snapped into the fixing frame (42). One end of the guide pipe (43) has an external connecting pipe (44), which can be connected to an external air supply device or pipeline. A nozzle (45) is fixed to the other end of the guide pipe (43).

9. The multi-layer co-extrusion blown film forming equipment for environmentally friendly packaging bags according to claim 8, characterized in that, The output port of the nozzle (45) is elongated and faces the tangential direction of the membrane bubble.

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