Extrusion mechanism for cast film machine

Abstract

The utility model relates to the technical field of cast film machines, discloses an extrusion mechanism for a cast film machine, and solves the problems that granular materials which are not completely molten possibly enter a mold along with the extrusion mechanism, so that bulges are generated on the surface of a generated cast film, and the product quality is reduced. A separation assembly comprises a fixing frame, a sliding block is installed in the fixing frame in a sliding mode, a threaded rod penetrates through the middle of the sliding block in a threaded mode, a motor is installed on one side of the fixing frame, a separation plate is installed on a guide pipe in a sliding mode, two secondary filter screens are arranged on the separation plate, and materials are pushed into the guide pipe; incompletely-molten large-particle materials are blocked by the secondary filter screens, the motor is started to drive the threaded rod to rotate and drive the sliding block to slide to enable the separation plate to move until the other secondary filter screen is located on one side of the output end of the extrusion bin, the secondary filter screens are replaced without shutdown, and the filtering effect of the secondary filter screens on the incompletely-molten materials is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cast film machine technical field, concretely is a kind of extrusion mechanism for cast film machine. BACKGROUND

[0002] The cast film is produced by cast film process, in the production process of cast film, extrusion mechanism plays a key role, it will plastic raw material be heated and melted, and with even pressure and speed, the molten plastic is extruded, forms continuous film, and the performance of extrusion mechanism directly influences the quality, thickness uniformity and production efficiency of cast film.

[0003] The existing patent with the publication number CN220163036U discloses an extrusion mechanism for cast film machine, which comprises a barrel, a spiral blade is installed inside the barrel, a discharge channel is installed on one side of the barrel, a die head is arranged at the bottom end of the discharge channel, and the spiral blade can drive the molten raw material to move so that the molten raw material is extruded into the discharge channel and then extruded through the die head.

[0004] The above-mentioned related technology has the problem that there may be granular materials that have not been completely melted, which enter the mold along with the extrusion mechanism, resulting in protrusions on the surface of the generated cast film and reducing product quality. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an extrusion mechanism for cast film machine, which solves the problem that there may be granular materials that have not been completely melted, which enter the mold along with the extrusion mechanism, resulting in protrusions on the surface of the generated cast film and reducing product quality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an extrusion mechanism for cast film machine, which comprises a feeding pipe, a filter screen is installed inside the feeding pipe, an adjusting assembly is arranged on the upper side of the filter screen, the adjusting assembly is installed on the feeding pipe, an extrusion bin is installed at the lower end of the feeding pipe, a screw extrusion device is installed in the extrusion bin, a guide pipe is installed at one end of the extrusion bin, a separation assembly is installed on one side of the guide pipe, a cast film head is installed on the lower side of the guide pipe, the separation assembly comprises a fixed frame, the fixed frame is installed on one side of the guide pipe, a sliding block is slidingly installed in the fixed frame, a threaded rod is threaded through the middle part of the sliding block, the threaded rod is rotationally installed on the fixed frame, a motor is installed on one side of the fixed frame, the driving end of the motor is fixedly connected with the threaded rod, a sliding groove is formed in the guide pipe, a separation plate is slidingly arranged in the sliding groove, one end of the separation plate is fixedly connected with the sliding block, the separation plate is located between the extrusion bin and the guide pipe, two secondary filter screens are movably installed on the separation plate, and one of the secondary filter screens is located on one side of the output end of the extrusion bin.

[0007] The molten material is pushed by the screw extrusion device, filtered through the secondary filter screen into the guide pipe, and the large particle material not completely melted is blocked on the surface of the secondary filter screen; the motor is started, the driving end of the motor drives the threaded rod to rotate, thereby driving the sliding block to slide in the fixed frame, so that the separation plate moves until the other piece of secondary filter screen is located at one side of the output end of the extrusion bin; the secondary filter screen is replaced without stopping the machine, and the filtering effect of the secondary filter screen on the material not completely melted is improved.

[0008] Preferably, the diameters of the two secondary filter screens are greater than the diameter of the output end of the extrusion bin.

[0009] The secondary filter screen can uniformly filter the material.

[0010] Preferably, a heat preservation pipe sleeve is installed between the guide pipe and the cast film head.

[0011] The heat preservation pipe sleeve can slow down the cooling speed of the molten material in the cast film head, so that the material can be uniformly shaped in the cast film head.

[0012] Preferably, the feeding pipe is obliquely arranged.

[0013] The oblique feeding pipe makes the filter screen also oblique, so that the material slowly contacts the filter screen in the feeding pipe.

[0014] Preferably, the adjusting assembly comprises two rotating plates, and the two rotating plates are both provided with a rotating shaft penetratingly installed at the end close to each other, and the rotating shaft is rotatably installed on the feeding pipe, and a gear is fixedly sleeved on the outside of the rotating shaft, and the two gears are meshingly connected.

[0015] The rotating shaft is rotated to drive the two gears to rotate, thereby driving the two rotating plates to rotate, and the distance between the rotating plates and the inner wall of the feeding pipe can be adjusted, so that the flow rate of the material entering the feeding pipe is controlled, and the material in the feeding pipe is prevented from being blocked.

[0016] Preferably, the end close to each other of the two rotating plates is arranged in an arc shape.

[0017] The two rotating plates are prevented from being stuck when rotating.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The utility model provides a kind of extrusion mechanism for cast film machine, separation component includes motor and two secondary filter screens on fixed frame, the material of melting is pushed into guide pipe by screw extrusion device, not completely melted large particle material will be blocked in one piece secondary filter screen surface, start motor, motor drives separation plate to move, until another piece secondary filter screen is located in the side of extrusion bin output end, not completely melted large particle material is blocked, under the condition of not stopping, replace secondary filter screen, improve the filtering effect of secondary filter screen to not completely melted material. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole schematic diagram of the utility model;

[0021] Figure 2 It is the side sectional view of the utility model;

[0022] Figure 3 It is the separation component structure schematic diagram of the utility model;

[0023] Figure 4 It is the adjustment component structure schematic diagram of the utility model;

[0024] In the drawing: 1, feed pipe;2, filter screen;3, adjustment component;31, rotating plate;32, rotating shaft;33, gear;4, extrusion bin;5, screw extrusion device;6, guide pipe;61, sliding slot;62, heat preservation pipe sleeve;7, separation component;71, fixed frame;72, sliding block;73, threaded rod;74, motor;75, separation plate;751, secondary filter screen;8, cast film head. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings of the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0026] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings.

[0027] In combination Figures 1-3The utility model provides an extrusion mechanism for cast film machine, including feed pipe 1, install filter screen 2 inside feed pipe 1, the upper side of filter screen 2 is provided with adjusting assembly 3, adjusting assembly 3 is installed on feed pipe 1, the lower end of feed pipe 1 is installed with extrusion bin 4, install screw extrusion device 5 in extrusion bin 4, screw extrusion device 5 is composed of motor, screw and heating device, and the rotation of screw is driven by motor and forwards the plastic raw material to deliver, compress and melt, and the heating device is arranged around the screw to heat the material, one end of extrusion bin 4 is installed with guide pipe 6, separating assembly 7 is installed on one side of guide pipe 6, and the lower side of guide pipe 6 is installed with cast film head 8, and cast film head 8 extrudes the molten material into the component of specific shape, separating assembly 7 includes fixed frame 71, fixed frame 71 is installed on one side of guide pipe 6, slidingly installed with sliding block 72 in fixed frame 71, threaded rod 73 is screwed through the middle part of sliding block 72, threaded rod 73 is rotatably installed on fixed frame 71, motor 74 is installed on one side of fixed frame 71, and the driving end of motor 74 is fixedly connected with threaded rod 73, sliding slot 61 is formed in guide pipe 6, separating plate 75 is slidably arranged in sliding slot 61, one end of separating plate 75 is fixedly connected with sliding block 72, separating plate 75 is located between extrusion bin 4 and guide pipe 6, and two secondary filter screens 751 are movably installed on separating plate 75, one of secondary filter screens 751 is located on one side of the output end of extrusion bin 4, the molten material is pushed by screw extrusion device 5, passes through secondary filter screen 751 and enters guide pipe 6, and the large particle material that is not completely melted is blocked on the surface of secondary filter screen 751, start motor 74, the driving end of motor 74 drives threaded rod 73 to rotate, thereby driving sliding block 72 to slide in fixed frame 71, make separating plate 75 move, until the other secondary filter screen 751 is located on one side of the output end of extrusion bin 4, replace secondary filter screen 751 without stopping, improve the filtering effect of secondary filter screen 751 on the material that is not completely melted.

[0028] In combination Figures 1-3 The diameter of secondary filter screen 751 is greater than the diameter of the output end of extrusion bin 4, the secondary filter screen 751 can filter the material uniformly, the heat preservation pipe sleeve 62 is installed between guide pipe 6 and cast film head 8, the heat preservation pipe sleeve 62 contains heating resistance wire inside, can generate heat to play the role of heat preservation, the heat preservation pipe sleeve 62 can slow down the cooling speed of the molten material in cast film head 8, ensure that the material can be uniformly shaped in cast film head 8, the feed pipe 1 is arranged in an inclined manner, the feed pipe 1 is inclined, so that the filter screen 2 is also inclined, so that the material slowly contacts the filter screen 2 in the feed pipe 1.

[0029] In combination Figure 4The adjusting assembly 3 comprises two rotating plates 31, the two rotating plates 31 are provided with arc-shaped ends, which can prevent the two rotating plates 31 from being stuck when rotating, rotating shafts 32 are installed through the arc-shaped ends of the two rotating plates 31, the rotating shafts 32 are rotatably installed on the feeding pipe 1, gears 33 are fixedly installed on the outer sides of the rotating shafts 32, the two gears 33 are meshed and connected, the rotating shafts 32 are rotated, so that the two gears 33 are simultaneously rotated, thereby driving the two rotating plates 31 to rotate, and the distance between the rotating plates 31 and the inner wall of the feeding pipe 1 can be adjusted, so that the flow rate of the material entering the feeding pipe 1 is controlled, and the material is prevented from being blocked in the feeding pipe 1.

[0030] Working principle: the molten material is pushed by the screw extrusion device 5, passes through the secondary filter screen 751, and enters the guide pipe 6, the large particle material that is not completely melted is blocked on the surface of the secondary filter screen 751, the motor 74 is started, the driving end of the motor 74 drives the threaded rod 73 to rotate, thereby driving the sliding block 72 to slide in the fixed frame 71, so that the separation plate 75 moves, until the other piece of the secondary filter screen 751 is located on one side of the output end of the extrusion bin 4, the secondary filter screen 751 is replaced without stopping the machine, and the filtering effect of the secondary filter screen 751 on the material that is not completely melted is improved.

[0031] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An extrusion mechanism for a cast film machine, comprising a feeding pipe (1), a filter screen (2) is installed inside the feeding pipe (1), an adjusting assembly (3) is arranged on the upper side of the filter screen (2), the adjusting assembly (3) is installed on the feeding pipe (1), an extrusion bin (4) is installed at the lower end of the feeding pipe (1), a screw extrusion device (5) is installed in the extrusion bin (4), a guide pipe (6) is installed at one end of the extrusion bin (4), a separation assembly (7) is installed on one side of the guide pipe (6), a cast film head (8) is installed on the lower side of the guide pipe (6), characterized in that: The separating assembly (7) comprises a fixed frame (71) installed on one side of the guide pipe (6), a sliding block (72) slidingly installed in the fixed frame (71), a threaded rod (73) threaded through the middle of the sliding block (72), the threaded rod (73) being rotatably installed on the fixed frame (71), a motor (74) installed on one side of the fixed frame (71), the driving end of the motor (74) being fixedly connected with the threaded rod (73), a sliding groove (61) formed in the guide pipe (6), a separating plate (75) slidingly arranged in the sliding groove (61), one end of the separating plate (75) being fixedly connected with the sliding block (72), the separating plate (75) being located between the extrusion bin (4) and the guide pipe (6), and two secondary filter screens (751) movably installed on the separating plate (75), one of the secondary filter screens (751) being located on one side of the output end of the extrusion bin (4).

2. An extrusion mechanism for a cast film machine according to claim 1, characterized in that: The diameter of the secondary filter screen (751) is greater than the diameter of the output end of the extrusion bin (4).

3. An extrusion mechanism for a cast film machine according to claim 1, wherein: A heat preservation pipe sleeve (62) is installed between the guide pipe (6) and the cast film head (8).

4. An extrusion mechanism for a cast film machine according to claim 1, characterized in that: The feeding pipe (1) is arranged in an inclined manner.

5. An extrusion mechanism for a cast film machine according to claim 1, characterized in that: The adjusting assembly (3) comprises two rotating plates (31), one end of each of the two rotating plates (31) penetratingly installed with a rotating shaft (32), the rotating shaft (32) being rotatably installed on the feeding pipe (1), a gear (33) fixedly sleeved on the outer side of the rotating shaft (32), and the two gears (33) being meshingly connected.

6. An extrusion mechanism for a cast film machine according to claim 5, wherein: One end of each of the two rotating plates (31) is arranged in a circular arc shape.

Images