Tough PE film preparation device

Abstract

The utility model relates to a tough PE film preparation device, and relates to the field of PE film production. The device comprises an extrusion cylinder, the outer side of the extrusion cylinder is covered with a shell, an electric heating pipe is wound around the outer side of the extrusion cylinder, a heating cavity is reserved between the inner side of the shell and the extrusion cylinder, the right end of the shell is provided with an extrusion mold connected with the right end of the extrusion cylinder in a sleeving mode, and the right end of the shell is fixedly provided with a locking mechanism for locking the extrusion mold. A hopper is fixed to the position, close to the left side, of the upper surface of the shell, the lower end of the hopper is connected with an extrusion barrel, a hollow extrusion screw is installed on the inner side of the extrusion barrel, an inner heating mechanism is arranged on the inner side of the extrusion screw, and a driving mechanism for driving the extrusion screw to rotate is fixed to the left end of the shell. The extrusion barrel is heated from the outer side through the electric heating pipe, and meanwhile, the extrusion screw rod is heated through the inner heating mechanism, so that PE particles are heated from the inner side and the outer side at the same time, the PE particles are heated more uniformly, and the melting efficiency is better.

Description

Technical Field

[0001] The present application relates to the technical field of PE film production, and in particular to a device for preparing a strong and tough PE film. Background Art

[0002] Polyethylene (PE) film is widely used in packaging, agriculture, construction and other fields due to its excellent flexibility, tear resistance and moisture resistance. During the production of PE film, the PE material is melted through an extruder, extruded into sheets through a die head, and then made into a film through processes such as cooling and cutting.

[0003] When the PE material is melted, the extrusion screw transports the PE material in the extrusion barrel and the heating component melts the PE particles in the extrusion barrel. The molten PE material is extruded from the extrusion die to form a film under the drive of the extrusion screw.

[0004] Existing PE film preparation devices heat and melt PE particles by mostly heating the extrusion barrel through an outer electric heating tube, thereby heating the PE particles. This heating method causes uneven heating of the PE particles. The PE particles close to the inner wall of the extrusion barrel are heated quickly, while the PE particles away from the inner wall of the extrusion barrel are heated slowly, thereby affecting the quality of the PE film. Moreover, if the temperature is too high when the PE film preparation device heats the PE particles, it will also affect the quality of the PE film, and the excessively high temperature cannot be quickly lowered. Utility Model Content

[0005] In order to solve the problems of uneven heating of PE particles and inability to quickly reduce excessively high temperatures in existing PE film preparation devices, the present application provides a tough PE film preparation device.

[0006] The present application provides a tough PE film preparation device that adopts the following technical solutions:

[0007] A tough PE film preparation device comprises an extrusion barrel, an outer cover of the extrusion barrel is provided with an outer shell, and an electric heating tube is wrapped around the outer side of the extrusion barrel, a heating chamber is left between the inner side of the shell and the extrusion barrel, and an extrusion die is provided at the right end of the shell and is sleeved with the right end of the extrusion barrel, a locking mechanism for locking the extrusion die is fixed to the right end of the shell, a hopper is fixed on the upper surface of the shell near the left side, and the lower end of the hopper is connected to the extrusion barrel, a hollow extrusion screw is installed on the inner side of the extrusion barrel, and an internal heating mechanism is provided on the inner side of the extrusion screw, a driving mechanism for driving the extrusion screw to rotate is fixed to the left end of the shell, an air intake annular pipe is provided in the middle part of the shell, and the air intake annular pipe is connected to the shell through multiple pipes, the air intake annular pipe is also connected to an air pump through a pipe, and an air outlet annular pipe for exhausting outward is provided near the left and right ends of the shell, and the air outlet annular pipe is connected to the shell through multiple pipes, and the left and right air outlet annular pipes are also connected to the hopper through a pipe.

[0008] Optionally, the extrusion barrel is heated from the outside by an electric heating tube, and the extrusion screw is heated by an internal heating mechanism, so that the PE particles are heated from both the outside and the inside at the same time, so that the PE particles are heated more evenly and the melting efficiency is better. When the heating temperature of the PE particles is too high, the outside cold air is evenly loosened and tightened in the heating chamber and flows to the left and right sides through the air pump and the air inlet annular tube, so as to take away the excess heat of the electric heating tube and discharge it outward through the air outlet annular tube, thereby achieving rapid cooling regulation when the temperature is too high and ensuring stable heating of the PE particles.

[0009] Optionally, a discharge pipe is fixed at the lower end of the hopper, and an annular dispersion pipe connected to two air outlet annular pipes is installed near the discharge pipe. Multiple preheating pipes inserted in the hopper are fixed on the annular dispersion pipe.

[0010] By adopting the above technical solution, the annular air outlet pipe sends hot air to the annular dispersion pipe and blows it to the PE particles in the hopper through the preheating pipe, thereby preheating the PE particles, which is beneficial to improving the subsequent melting efficiency of the PE particles.

[0011] Optionally, a sleeve groove is provided in the middle of the left side of the extrusion die, and mounting edges are fixed on the upper and lower sides of the extrusion die.

[0012] By adopting the above technical solution, the extrusion die is sleeved with the extrusion barrel through the sleeve groove, and is locked by cooperating with the locking mechanism through the mounting edge.

[0013] Optionally, the locking mechanism includes a fixing block fixed to the housing, a fixing column fixed to the right end of the fixing block, and a locking plate pressed against the mounting edge is sleeved on the outer side of the fixing column.

[0014] By adopting the above technical solution, the locking plate is rotated to press against the installation edge, thereby achieving installation locking of the extrusion die.

[0015] Optionally, a rib is fixed on a side of the locking plate facing the mounting edge, and a groove is provided on the surface of the mounting edge.

[0016] By adopting the above technical solution, when the locking plate is rotated to the installation edge, the convex rib is clamped in the groove to achieve clamping and fixing.

[0017] Optionally, the driving mechanism includes a driving motor fixed on the left side of the housing, a driving gear is fixed on the output shaft of the driving motor, and the driving gear is meshedly connected with a rotating gear sleeved on the extrusion screw.

[0018] By adopting the above technical solution, the driving motor drives the driving gear to rotate, thereby driving the rotating gear to rotate, and the rotating gear drives the extrusion screw to rotate.

[0019] Optionally, the internal heating mechanism includes a plug fixed in the left port of the extrusion screw, an electric heating rod is fixed to the right end of the plug, and the diameter of the plug is the same as the inner diameter of the extrusion screw.

[0020] By adopting the above technical solution, the electric heating rod heats the extrusion screw so that the extrusion screw can heat the PE particles while feeding them.

[0021] In summary, this application has the following beneficial technical effects:

[0022] 1. The extrusion barrel is heated from the outside by the electric heating tube, and the extrusion screw is heated by the internal heating mechanism, so that the PE particles are heated from both the outside and the inside at the same time, so that the PE particles are heated more evenly and the melting efficiency is better;

[0023] 2. When the heating temperature of the PE particles is too high, the outside cold air is evenly tightened and loosened in the heating chamber through the air pump and the air inlet annular pipe and flows to the left and right sides, thereby taking away the excess heat of the electric heating tube and discharging it outward through the air outlet annular pipe, thereby achieving rapid cooling adjustment when the temperature is too high and ensuring stable heating of the PE particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view in an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the hopper in the embodiment of the present application;

[0026] Figure 3 Schematic diagram of the extrusion die in the embodiment of the present application;

[0027] Figure 4 is a schematic diagram of the locking mechanism in an embodiment of the present application;

[0028] Figure 5 is a schematic diagram of the driving mechanism in an embodiment of the present application;

[0029] Figure 6 It is a schematic diagram of the internal heating mechanism in an embodiment of the present application.

[0030] Explanation of the accompanying symbols: 1. Hopper; 110. Annular dispersion pipe; 120. Feeding pipe; 130. Preheating pipe; 2. Housing; 3. Driving mechanism; 31. Driving motor; 32. Driving gear; 33. Rotating gear; 4. Extrusion screw; 5. Electric heating pipe; 6. Internal heating mechanism; 61. Plug; 62. Electric heating rod; 7. Air pump; 8. Inlet annular pipe; 9. Outlet annular pipe; 10. Extrusion die; 101. Sleeve groove; 102. Mounting edge; 11. Locking mechanism; 111. Fixed block; 112. Fixed column; 113. Locking plate; 12. Extrusion barrel. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] The present application embodiment discloses a device for preparing a tough PE film. Figure 1 , including an extrusion barrel 12, the outer cover of the extrusion barrel 12 is provided with an outer shell 2, and the outer side of the extrusion barrel 12 is wrapped with an electric heating tube 5, a heating chamber is left between the inner side of the shell 2 and the extrusion barrel 12, and the right end of the shell 2 is provided with an extrusion die 10 which is sleeved with the right end of the extrusion barrel 12, and the right end of the shell 2 is fixed with a locking mechanism 11 for locking the extrusion die 10, a hopper 1 is fixed on the upper surface of the shell 2 near the left side, and the lower end of the hopper 1 is connected to the extrusion barrel 12, a hollow extrusion screw 4 is installed on the inside of the extrusion barrel 12, and an internal heating mechanism 6 is provided on the inside of the extrusion screw 4, the extrusion barrel 12 is heated from the outside by the electric heating tube 5, and the extrusion screw 4 is heated by the internal heating mechanism 6, so that the PE particles are heated from the outside and the inside at the same time, so that the PE particles are heated more evenly and the melting efficiency is better.

[0033] A driving mechanism 3 for driving the extrusion screw 4 to rotate is fixed to the left end of the shell 2, and an air inlet annular pipe 8 is mounted in the middle part of the shell 2, and the air inlet annular pipe 8 is connected to the shell 2 through multiple pipes, and the air inlet annular pipe 8 is also connected to the air pump 7 through a pipe, and the shell 2 is mounted with an air outlet annular pipe 9 for exhausting outward near the left and right ends, and the air outlet annular pipe 9 is connected to the shell 2 through multiple pipes, and the left and right air outlet annular pipes 9 are also connected to the hopper 1 through pipes. When the heating temperature of the PE particles is too high, the outside cold air is evenly tightened and loosened in the heating cavity through the air pump 7 and the air inlet annular pipe 8 and flows to the left and right sides, thereby taking away excess heat from the electric heating tube 5 and discharging it outward through the air outlet annular pipe 9, thereby achieving rapid cooling regulation when the temperature is too high, and ensuring stable heating of the PE particles.

[0034] Reference Figure 2A discharge pipe 120 is fixed at the lower end of the hopper 1, and a ring-shaped dispersion pipe 110 connected to two air outlet ring pipes 9 is set near the discharge pipe 120 of the hopper 1. A plurality of preheating pipes 130 inserted in the hopper 1 are fixed on the ring-shaped dispersion pipe 110. The air outlet ring pipe 9 sends hot air to the ring-shaped dispersion pipe 110 and blows it to the PE particles in the hopper 1 through the preheating pipe 130, thereby preheating the PE particles, which is beneficial to improving the melting efficiency of the PE particles in the subsequent process.

[0035] Reference Figure 3 A sleeve groove 101 is provided in the middle of the left side of the extrusion die 10, and the extrusion die 10 is sleeved with the extrusion barrel 12 through the sleeve groove 101, and mounting edges 102 are fixed on the upper and lower sides of the extrusion die 10, which are locked by cooperating with the locking mechanism 11 through the mounting edges 102.

[0036] Reference Figure 4 The locking mechanism 11 includes a fixing block 111 fixed to the housing 2, a fixing column 112 is fixed to the right end of the fixing block 111, and a locking plate 113 is sleeved on the outer side of the fixing column 112 and pressed against the mounting edge 102. The locking plate 113 is rotated to press against the mounting edge 102 to achieve the installation locking of the extrusion mold 10. A convex rib is fixed on the side of the locking plate 113 facing the mounting edge 102, and a groove is provided on the surface of the mounting edge 102. When the locking plate 113 is rotated to the mounting edge 102, the convex rib is clamped in the groove to achieve clamping and fixing.

[0037] Reference Figure 5 The driving mechanism 3 includes a driving motor 31 fixed on the left side of the shell 2. A driving gear 32 is fixed on the output shaft of the driving motor 31, and the driving gear 32 is meshed and connected with a rotating gear 33 mounted on the extrusion screw 4. The driving motor 31 drives the driving gear 32 to rotate, thereby driving the rotating gear 33 to rotate, and the rotating gear 33 drives the extrusion screw 4 to rotate.

[0038] Reference Figure 6 The internal heating mechanism 6 includes a plug 61 fixed in the left port of the extrusion screw 4. The right end of the plug 61 is fixed with an electric heating rod 62. The electric heating rod 62 heats the extrusion screw 4 so that the extrusion screw 4 can heat the PE particles while feeding. The diameter of the plug 61 is the same as the inner diameter of the extrusion screw 4, so as to better realize the installation and fixation of the plug 61 at the left port of the extrusion screw 4.

[0039] The implementation principle of a strong and tough PE film preparation device in an embodiment of the present application is as follows: when producing PE film, PE particles are poured into the hopper 1 and enter the inner side of the extrusion barrel 12 through the discharge pipe 120. At this time, the driving motor 31 drives the driving gear 32 to rotate, thereby driving the rotating gear 33 to rotate, and the rotating gear 33 drives the extrusion screw 4 to rotate to transport the PE particles to the right. While transporting the PE particles, the PE particles are heated and melted from the outside and the inside at the same time through the joint action of the electric heating tube 5 and the electric heating rod 62. The molten PE material is extruded through the extrusion die 10 to form a film. When the heating temperature of the PE particles is too high, the external cold air is evenly tightened and tightened in the heating chamber through the air pump 7 and the air inlet annular pipe 8 and flows to the left and right sides, thereby taking away the excess heat of the electric heating tube 5 and discharging it outward through the air outlet annular pipe 9 and sending it to the hopper 1 for preheating the PE particles therein.

[0040] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A tough PE film preparation device, comprising an extrusion cylinder (12), characterized in that: The outer cover of the extrusion barrel (12) is provided with a shell (2), and the outer side of the extrusion barrel (12) is wrapped with an electric heating tube (5), a heating chamber is left between the inner side of the shell (2) and the extrusion barrel (12), and the right end of the shell (2) is provided with an extrusion die (10) sleeved with the right end of the extrusion barrel (12), and the right end of the shell (2) is fixed with a locking mechanism (11) for locking the extrusion die (10), a hopper (1) is fixed on the upper surface of the shell (2) near the left side, and the lower end of the hopper (1) is connected to the extrusion barrel (12), a hollow extrusion screw (4) is installed on the inner side of the extrusion barrel (12), and the extrusion barrel (12) is provided with a hollow extrusion screw (4). An internal heating mechanism (6) is provided on the inner side of the extrusion screw (4), a driving mechanism (3) for driving the extrusion screw (4) to rotate is fixed to the left end of the shell (2), an air inlet annular tube (8) is provided in the middle part of the shell (2), and the air inlet annular tube (8) is connected to the shell (2) through multiple pipes, and the air inlet annular tube (8) is also connected to an air pump (7) through a pipe, and the shell (2) is provided with an air outlet annular tube (9) for exhausting air outward near the left and right ends, and the air outlet annular tube (9) is connected to the shell (2) through multiple pipes, and the two air outlet annular tubes (9) on the left and right are also connected to the hopper (1) through pipes.

2. The device for preparing a tough PE film according to claim 1, characterized in that: A discharge pipe (120) is fixed at the lower end of the hopper (1), and an annular dispersion pipe (110) connected to two annular air outlet pipes (9) is mounted on the hopper (1) near the discharge pipe (120). A plurality of preheating pipes (130) inserted in the hopper (1) are fixed on the annular dispersion pipe (110).

3. The device for preparing a tough PE film according to claim 2, characterized in that: A sleeve groove (101) is provided in the middle of the left side of the extrusion die (10), and mounting edges (102) are fixed on both the upper and lower sides of the extrusion die (10).

4. The device for preparing a tough PE film according to claim 3, characterized in that: The locking mechanism (11) comprises a fixing block (111) fixed to the housing (2), a fixing column (112) being fixed to the right end of the fixing block (111), and a locking plate (113) being sleeved on the outer side of the fixing column (112) and pressed against the mounting edge (102).

5. The device for preparing a tough PE film according to claim 4, characterized in that: A convex rib is fixed on one side of the locking plate (113) facing the mounting edge (102), and a groove is provided on the surface of the mounting edge (102).

6. The device for preparing a tough PE film according to claim 5, characterized in that: The driving mechanism (3) includes a driving motor (31) fixed on the left side of the housing (2), a driving gear (32) fixed on the output shaft of the driving motor (31), and the driving gear (32) is meshedly connected with a rotating gear (33) mounted on the extrusion screw (4).

7. The device for preparing a tough PE film according to claim 6, characterized in that: The internal heating mechanism (6) comprises a plug (61) fixed in the left port of the extrusion screw (4), an electric heating rod (62) is fixed to the right end of the plug (61), and the diameter of the plug (61) is the same as the inner diameter of the extrusion screw (4).

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