Single-screw bidirectional channel extrusion film blowing machine

Abstract

The utility model belongs to the technical field of film blowing machines, and particularly relates to a single-screw two-way channel extrusion film blowing machine which comprises two conveying mechanisms and an extrusion mechanism, the two conveying mechanisms are longitudinally arranged at the upper end of the extrusion mechanism, the two conveying channels are fixedly installed, the two conveying channels are jointly and rotationally connected with an installation circular plate, and the installation circular plate is fixedly connected with the extrusion mechanism. Four filter screens matched with the conveying channels are uniformly arranged on the mounting circular plate, communicating boxes rotationally connected with the mounting circular plate are fixedly mounted at the tail ends of the two conveying channels, the two communicating boxes communicate with each other and communicate with the extrusion mechanism, and the two conveying channels are jointly provided with a feeding mechanism; according to the utility model, the vertically arranged conveying channels are matched with the filter screens of the mounting circular plate, and when the filter screens are blocked, the mounting circular plate is rotated to drive the two blocked filter screens to be far away from the conveying channels, so that the unused filter screens are matched with the conveying channels, and the blocked filter screens are prevented from influencing the filtering efficiency of raw materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of film blowing machines, and in particular relates to a single-screw bidirectional channel extrusion film blowing machine. Background Art

[0002] The film blowing machine is a mechanical device that heats and melts plastic particles and then blows them into thin films. It mainly adds dry polyethylene particles into the lower hopper. The particles enter the screw from the hopper by their own weight. When the particles come into contact with the screw thread, the rotating bevel surface will generate a thrust perpendicular to the bevel surface on the plastic, and this thrust causes the plastic particles to move forward.

[0003] In existing film blowing machines, the extrusion mechanism usually needs to filter the melted plastic particles before extruding the film to prevent impurities from entering the extrusion mechanism for extrusion molding. However, the filter screen used for a long time is prone to clogging and affects the film blowing effect. Therefore, the filter screen must be replaced in time. However, the existing filter screen is inconvenient to replace and wastes time and affects the processing effect. Therefore, it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a single-screw bidirectional channel extrusion film blowing machine to solve the problems existing in the background technology.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] A single-screw bidirectional channel extrusion film blowing machine comprises two conveying mechanisms and an extrusion mechanism, the two conveying mechanisms are commonly connected to the extrusion mechanism, and a separately controlled heating component is installed inside the two conveying mechanisms. The conveying mechanism comprises a conveying channel and a single-screw conveying component, the two conveying mechanisms are longitudinally arranged at the upper end of the extrusion mechanism, the two conveying channels are fixedly installed with each other, the two conveying channels are commonly rotatably connected with a mounting circular plate, the mounting circular plate is evenly provided with four filter screens matching the conveying channels, a connecting box rotatably connected to the mounting circular plate is fixedly installed at the end of the two conveying channels, the two connecting boxes are connected with each other and the extrusion mechanism, and a feeding mechanism is commonly installed with the two conveying channels.

[0007] A locking assembly is installed between the filter screen and the mounting circular plate, and the locking assembly includes four latches. A cross groove is provided in the center of the mounting circular plate, and four T-shaped blocks are slidably connected inside the cross groove. The four latches are fixedly installed on one side away from the four T-shaped blocks. A slot matching the latch is provided on the side of the filter screen, and two symmetrical T-shaped blocks are staggered and fixedly installed with a first spring.

[0008] The feeding mechanism comprises a feeding funnel fixedly mounted on the upper conveying mechanism, a conical filter screen fixedly mounted inside the feeding funnel, and a feeding pipe fixedly mounted on the feeding funnel which is connected with the lower conveying channel.

[0009] The upper end of the feed hopper is fixedly connected with a baffle matching the position of the feed pipe.

[0010] The upper end of the baffle is rotatably connected with a rotating shaft, the lower end of the rotating shaft is fixedly connected with two limit plates matching the conical filter screen, and the upper end of the rotating shaft is fixedly installed with a handle.

[0011] The single-screw conveying assembly includes a driving motor installed at the front end of the conveying channel, the output shaft of the driving motor is equipped with a mounting shaft extending into the conveying channel, and the mounting shaft is equipped with a conveying paddle.

[0012] The utility model can cooperate with the filter screen of the installation circular plate through the upper and lower conveying channels. When the filter screen is blocked, the installation circular plate is rotated to drive the two blocked filter screens away from the conveying channel, and then the unused filter screen is matched with the conveying channel to avoid the blocked filter screen affecting the filtering efficiency of the raw material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings.

[0014] Figure 1 This is a structural schematic diagram of a single-screw bidirectional channel extrusion film blowing machine of the utility model;

[0015] Figure 2 This is a schematic diagram of the first cross-sectional structure of a single-screw bidirectional channel extrusion film blowing machine of the utility model;

[0016] Figure 3 This is a second cross-sectional structural schematic diagram of a single-screw bidirectional channel extrusion film blowing machine of the utility model;

[0017] Figure 4 It is a third cross-sectional structural schematic diagram of a single-screw bidirectional channel extrusion film blowing machine of the utility model;

[0018] Figure 5 The utility model is a partial cross-sectional structural schematic diagram of a single-screw bidirectional channel extrusion film blowing machine.

[0019] The main component symbols are described as follows:

[0020] Conveying mechanism 1, extrusion mechanism 11, heating component 12, mounting circular plate 13, filter screen 14, connecting box 15, conveying channel 16, latch 20, cross slot 21, T-block 22, first spring 23, feed funnel 24, conical filter screen 25, feed pipe 26, baffle 27, rotating shaft 28, limit plate 29, handle 30, drive motor 31, mounting shaft 32, conveying paddle 33. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Example 1: Figure 1-5 As shown, in order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0023] A single-screw bidirectional channel extrusion film blowing machine comprises two conveying mechanisms 1 and an extrusion mechanism 11, the two conveying mechanisms 1 are commonly connected to the extrusion mechanism 11, and a separately controlled heating component 12 is installed inside the two conveying mechanisms 1. The conveying mechanism 1 comprises a conveying channel 16 and a single-screw conveying component. The two conveying mechanisms 1 are longitudinally arranged at the upper end of the extrusion mechanism 11, and the two conveying channels 16 are fixedly installed with each other. The two conveying channels 16 are commonly rotatably connected with a mounting circular plate 13, and the mounting circular plate 13 is evenly provided with four filter screens 14 matching the conveying channels 16. A connecting box 15 rotatably connected to the mounting circular plate 13 is fixedly installed at the ends of the two conveying channels 16, and the two connecting boxes 15 are connected with each other and the extrusion mechanism 11, and a feeding mechanism is commonly installed with the two conveying channels 16.

[0024] When in use, the raw material for film blowing is put into the conveying channel 16 from the feeding mechanism to cooperate with the heating component 12 to melt the raw material, and then the raw material is conveyed in a dual channel through two single-screw conveying components. During the conveying process, the melted raw material passes through the filter screen 14, so that impurities or unmelted raw materials can be prevented from entering the connecting box 15, thereby preventing impurities and unmelted raw materials from entering the extrusion mechanism 11 for film blowing. In the process of conveying the raw material through the filter screen 14 by the single-screw conveying component, the raw material will block the filter screen 14, thereby reducing the working efficiency of the filter screen 14. At this time, it is only necessary to rotate the mounting circular plate 13 by 90 degrees, and then make the left and right sides The unused filter screen 14 fits into the conveying channel 16, and then the blocked filter screen 14 is replaced for cleaning, until the filter screens 14 on the upper and lower sides are blocked, and the mounting circular plate 13 is rotated again to switch the filter screen 14, so that the unused filter screen 14 can be conveniently switched for filtering through the four filter screens 14 and the two conveying channels 16 arranged above and below to improve the filtering effect, and at the same time, the two switched filter screens 14 are located on the left and right sides for the convenience of cleaning by the staff, and the cleaned impurities and raw materials will not drip on the upper end of the conveying channel 16, and the garbage collection equipment can be placed on both sides for the convenience of receiving the raw materials cleaned from the filter screen 14;

[0025] The utility model can cooperate with the filter screen of the installation circular plate through the upper and lower conveying channels. When the filter screen is blocked, the installation circular plate is rotated to drive the two blocked filter screens away from the conveying channel, and then the unused filter screen is matched with the conveying channel to avoid the blocked filter screen affecting the filtering efficiency of the raw material.

[0026] Embodiment 2: Based on Embodiment 1, further improvement is made, a locking assembly is installed between the filter screen 14 and the mounting circular plate 13, the locking assembly includes four latches 20, a cross groove 21 is provided in the center of the mounting circular plate 13, four T-shaped blocks 22 are slidably connected inside the cross groove 21, the four latches 20 are fixedly installed on one side away from the four T-shaped blocks 22, a slot matching the latch 20 is provided on the side of the filter screen 14, and two symmetrical T-shaped blocks 22 are staggered and fixedly installed with a first spring 23.

[0027] When the filter screens 14 on the left and right sides need to be taken down for cleaning, one of the T-shaped blocks 22 is first driven to overcome the resilience of the first spring 23 fixed thereto and move toward the center of the mounting circular plate 13, and then the latch 20 withdraws from the filter screen 14 and enters the cross groove 21. At this time, the filter screen 14 can be pushed from one side to be removed for cleaning. After removal, the force of the T-shaped block 22 is released, and the first spring 23 returns to its initial state. Then the T-shaped block 22 on the other side is driven to be installed in the same manner to release the connection between the latch 20 and the filter screen 14, and then it can be removed.

[0028] During installation, the T-shaped block 22 on one side is first driven to slide against the first spring 23 fixed thereto, and then the latch 20 is inserted into the cross slot 21. The filter screen 14 is then inserted into the through slot of the mounting circular plate 13, and the slot is aligned with the latch 20. After the force is released, the latch 20 is inserted into the slot under the rebound force of the first spring 23 to complete the locking.

[0029] The feeding mechanism includes a feeding hopper 24 fixedly mounted on the upper conveying mechanism 1 , a conical filter screen 25 fixedly mounted inside the feeding hopper 24 , and a feeding pipe 26 connected to the lower conveying channel 16 fixedly mounted on the feeding hopper 24 .

[0030] The feed funnel 24 can increase the feed area and improve the feed efficiency, while the conical filter 25 can screen the granular raw materials so that the small granular raw materials passing through enter the upper conveying channel 16, while the large granular raw materials move toward the feed pipe 26 during the accumulation process, and then enter the lower conveying channel 16 through the feed pipe 36. The upper and lower conveying channels 16 are respectively equipped with separately controlled heating components 12, so the working temperatures of the two heating components 12 can be controlled, thereby effectively melting particles of different sizes, and avoiding the working temperature of the heating component 12 being insufficient to melt the large particles when large particles and small particles are mixed and melted.

[0031] The upper end of the feed hopper 24 is fixedly connected with a baffle 27 that matches the position of the feed pipe 26. The baffle 27 can prevent the raw materials from entering directly from the feed pipe 26.

[0032] The upper end of the baffle 27 is rotatably connected to a rotating shaft 28 , the lower end of the rotating shaft 28 is fixedly connected to two limit plates 29 matching the conical filter screen 25 , and the upper end of the rotating shaft 28 is fixedly mounted with a handle 30 .

[0033] In the initial state, the limit plate 29 descends to block the feed pipe 26, so that the raw materials can be screened. Then, when some large-particle raw materials are accumulated in the feed funnel 24, the handle 30 is turned to allow the limit plate 29 to drive the large-particle raw materials to the side of the feed pipe 26, and then the large-particle raw materials enter the lower conveying channel 16.

[0034] The single screw conveying assembly includes a driving motor 31 installed at the front end of the conveying channel 16, and the output shaft of the driving motor 31 is installed with a mounting shaft 32 extending into the conveying channel 16, and the mounting shaft 32 is installed with a conveying paddle 33. When the driving motor 31 is working, it drives the mounting shaft 32 and the conveying paddle 33 to rotate, thereby causing the raw material to melt under the action of the heating assembly 12 and be conveyed to the filter screen 14 at the same time.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A single-screw bidirectional channel extrusion film blowing machine, comprising two conveying mechanisms and an extrusion mechanism, the two conveying mechanisms are connected to the extrusion mechanism, and the two conveying mechanisms are internally installed with a separately controlled heating component, the conveying mechanism comprises a conveying channel and a single-screw conveying component, characterized in that: The two conveying mechanisms are longitudinally arranged at the upper end of the extrusion mechanism, the two conveying channels are fixedly installed with each other, the two conveying channels are commonly rotatably connected with a mounting circular plate, the mounting circular plate is evenly provided with four filter screens matching the conveying channels, and a connecting box rotatably connected with the mounting circular plate is fixedly installed at the ends of the two conveying channels, the two connecting boxes are connected with each other and with the extrusion mechanism, and the two conveying channels are commonly installed with a feeding mechanism.

2. The single-screw bidirectional channel extrusion film blowing machine according to claim 1, characterized in that: A locking assembly is installed between the filter screen and the mounting circular plate, and the locking assembly includes four latches. A cross groove is provided in the center of the mounting circular plate, and four T-shaped blocks are slidably connected inside the cross groove. The four latches are fixedly installed on one side away from the four T-shaped blocks. A slot matching the latch is provided on the side of the filter screen, and two symmetrical T-shaped blocks are staggered and fixedly installed with a first spring.

3. The single-screw bidirectional channel extrusion film blowing machine according to claim 1, characterized in that: The feeding mechanism comprises a feeding funnel fixedly mounted on the upper conveying mechanism, a conical filter screen fixedly mounted inside the feeding funnel, and a feeding pipe fixedly mounted on the feeding funnel which is connected with the lower conveying channel.

4. The single-screw bidirectional channel extrusion film blowing machine according to claim 3, characterized in that: The upper end of the feed hopper is fixedly connected with a baffle matching the position of the feed pipe.

5. The single-screw bidirectional channel extrusion film blowing machine according to claim 4, characterized in that: The upper end of the baffle is rotatably connected with a rotating shaft, the lower end of the rotating shaft is fixedly connected with two limit plates matching the conical filter screen, and the upper end of the rotating shaft is fixedly installed with a handle.

6. The single-screw bidirectional channel extrusion film blowing machine according to claim 1, characterized in that: The single-screw conveying assembly includes a driving motor installed at the front end of the conveying channel, the output shaft of the driving motor is equipped with a mounting shaft extending into the conveying channel, and the mounting shaft is equipped with a conveying paddle.

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