Multifunctional device for controlling constant temperature of film blowing machine for mulching film processing

Abstract

The utility model discloses a multifunctional device for controlling the constant temperature of a film blowing machine for mulching film processing, and relates to the technical field of mulching film processing equipment. The device comprises a support, a bottom plate is fixedly connected to the inner bottom of the support, and an extrusion barrel is fixedly connected to an inner cavity of the support; a switching assembly is arranged at the top of the bottom plate and comprises a supporting frame fixedly connected to the top of the bottom plate and a first lead screw movably connected to one side of an inner cavity of the supporting frame. Through the synergistic effect of the switching assembly and the clamping assembly, a standby heating system can be rapidly switched when main constant-temperature equipment breaks down, shutdown replacement is not needed, the production interruption time is remarkably shortened, it is ensured that the heating device is tightly attached to the extrusion barrel through the magnetic attraction and clamping design of the closed ring, stable heat transfer is maintained, and it is ensured that the plastic melting temperature is uniform; therefore, the thickness consistency of mulching film finished products is improved, the rejection rate is reduced, and the overall production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of mulch film processing equipment, and in particular relates to a multi-functional device for controlling the temperature of a blown film machine used for mulch film processing. Background Technology

[0002] A blown film machine for mulch film processing is a specialized piece of equipment used to produce agricultural mulch film. It mainly uses a blow molding process to heat and melt plastic raw materials (usually polyethylene or polypropylene), then extrude them through a die and blow them into a film using airflow. This film is widely used in agricultural production, such as covering soil to increase temperature, retain moisture, and prevent weed growth. The working principle of the blown film machine involves melting plastic granules in a heating cylinder, pushing them to a die through a screw, and then using airflow to form a film on the outside of the die.

[0003] Existing blown film machines for mulch film processing still have some problems during use. For example, the extrusion cylinder of the blown film machine needs to be heated at a constant temperature to ensure that the plastic material can be extruded evenly and smoothly. However, the existing constant temperature system usually relies on external constant temperature equipment to complete the temperature control function. When the external constant temperature equipment fails, most blown film machines are not equipped with a backup constant temperature system. This means that when the constant temperature equipment fails, the machine must be stopped for replacement. This process is not only cumbersome to operate, but also significantly affects the normal production operation of the blown film machine, resulting in a decrease in production efficiency, increasing the difficulty of equipment maintenance and downtime, and thus affecting the company's production plan and economic benefits.

[0004] To address these issues, we provide a multifunctional device for controlling the temperature of a blown film machine used in mulch film processing. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional device for controlling the temperature of a blown film machine used in mulch film processing. By cooperating with the switching component and the clamping component, it solves the problem in the prior art that blown film machines used in mulch film processing are inconvenient to automatically switch to a backup temperature control device, which affects the normal operation of the equipment.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a multifunctional temperature control device for blown film machines used in mulch film processing. It includes a support frame, with a base plate fixedly connected to the bottom of the support frame and an extrusion cylinder fixedly connected to the inner cavity of the support frame. A switching assembly is provided on the top of the base plate. The switching assembly includes a support frame fixedly connected to the top of the base plate, a first lead screw movably connected to one side of the inner cavity of the support frame, a second lead screw movably connected to the other side of the inner cavity of the support frame, a lifting seat threadedly connected to the surfaces of the first and second lead screws, and a closing ring movably connected to the top of the lifting seat. The switching assembly is used to switch heating equipment. A clamping assembly is also provided on the top of the base plate. The clamping assembly includes a dual-axis motor fixedly connected to both sides of the top of the base plate, a screw fixedly connected to the output end of the dual-axis motor, a top frame threadedly connected to the surface of the screw, and an arc-shaped clamping plate fixedly connected to one side of the top frame. The clamping assembly is used to clamp the closing ring.

[0008] The present invention is further configured such that a first pulley is fixedly connected to one side of the surface of the first lead screw, and a second pulley is fixedly connected to one side of the surface of the second lead screw, and the first pulley and the second pulley are connected by belt drive.

[0009] The present invention is further configured such that a magnet is fixedly connected to one side of the closed ring, and an adsorption block is fixedly connected to the other side of the closed ring.

[0010] The present invention is further configured such that a limiting plate is fixedly connected to the top of the base plate, and limiting grooves are provided on both sides of the limiting plate. A limiting strip is fixedly connected to one side of the lifting seat, and one side of the limiting strip is slidably connected to the inner cavity of the limiting groove.

[0011] The present invention is further configured such that a drive motor is fixedly connected to one side of the bottom of the base plate, and the output end of the drive motor is fixedly connected to one end of the first lead screw.

[0012] The present invention is further configured such that a resistance heating coil is fixedly connected to the inner cavity of the closed ring, and the resistance heating coil is used to ensure a constant temperature inside the extrusion cylinder.

[0013] The present invention is further configured such that sliding grooves are provided on both sides of the support frame, and one side of the surface of the lifting seat is slidably connected to the inner cavity of the sliding groove.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model, through the synergistic effect of the switching component and the clamping component, can quickly switch to the backup heating system when the main constant temperature equipment fails, without the need for machine shutdown and replacement, significantly reducing production interruption time. The magnetic attraction and clamping design of the closed ring ensures that the heating device and the extrusion cylinder are tightly fitted, maintaining stable heat transfer and ensuring uniform plastic melting temperature, thereby improving the thickness consistency of the finished mulch film, reducing the scrap rate, and improving overall production efficiency.

[0016] 2. This utility model makes equipment maintenance more convenient through the liftable heating ring and the dual screw synchronous drive structure. The heating unit can be replaced or repaired simply by controlling the lifting seat through the drive motor. The cooperation between the limit groove and the slide enhances the stability of system operation, avoids manual adjustment errors, and reduces the degradation of raw materials or equipment damage caused by temperature control failure. It also extends the service life of the extruder and heating element and reduces the long-term operation and maintenance costs of enterprises.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of a multifunctional temperature control device for blown film machines used in mulch film processing.

[0020] Figure 2 This is a schematic diagram of the top structure of the bottom plate in a multifunctional temperature control device for blown film machines used in mulch film processing.

[0021] Figure 3 This is a schematic diagram of the internal structure of the support frame in a multifunctional temperature control device for blown film machines used in mulch film processing.

[0022] Figure 4 This is a schematic diagram of the screw surface structure in a multifunctional temperature control device for blown film machines used in mulch film processing.

[0023] Figure 5 This is an exploded view of the structure on both sides of the limiting plate in a temperature control device for a multifunctional blown film machine used in mulch film processing.

[0024] In the attached diagram: 1. Bracket; 2. Base plate; 3. Extrusion cylinder; 4. Support frame; 5. First lead screw; 6. Second lead screw; 7. Lifting seat; 8. Closed ring; 9. Dual-axis motor; 10. Screw; 11. Top frame; 12. Arc-shaped clamp; 13. First pulley; 14. Second pulley; 15. Magnet; 16. Adsorption block; 17. Limiting plate; 18. Limiting strip; 19. Drive motor; 20. Resistance heating coil. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1-5 This utility model is a multifunctional temperature control device for blown film machines used in mulch film processing. It includes a support 1, a base plate 2 fixedly connected to the bottom of the support 1, and an extrusion cylinder 3 fixedly connected to the inner cavity of the support 1. The extrusion cylinder 3 is used for mixing, heating, and extruding raw materials, therefore, its surface needs to be heated at a constant temperature. A switching assembly is provided on the top of the base plate 2. The switching assembly includes a support frame 4 fixedly connected to the top of the base plate 2, located on both sides of the top of the base plate 2. A first lead screw 5 is installed inside the support frame 4 on the left side of the top of the base plate 2, and a second lead screw 6 is installed on the right side. The first lead screw 5 is movably connected to one side of the inner cavity of the support frame 4, and the second lead screw 6 is movably connected to the other side of the inner cavity of the support frame 4. The threads of the first lead screw 5 and the second lead screw 6 are opposite in direction. Therefore, during rotation, the first pulley 13 and the second pulley 14 drive the lifting seats 7 on the surfaces of the first lead screw 5 and the second lead screw 6 to move in opposite directions, achieving automatic switching. The lifting seats 7 are threadedly connected to the surfaces of the first lead screw 5 and the second lead screw 6, and a sealing element is movably connected to the top of the lifting seats 7. The system consists of two closed loops 8: a main closed loop 8 and a backup closed loop 8. This ensures a rapid response during switching. The backup closed loop 8 is open by default, allowing it to automatically engage with the surface of the extrusion cylinder 3 during switching. The switching assembly is used to switch heating equipment. A clamping assembly is located on the top of the base plate 2. This assembly includes dual-axis motors 9 fixedly connected to both sides of the top of the base plate 2, and screws 10 fixedly connected to the output ends of the dual-axis motors 9. Driven by the dual-axis motors 9, the top frame... 11 moves relative to or in opposite directions to achieve automatic clamping or automatic separation, ensuring that the sealing ring can switch normally. Sliding strips are fixedly connected to both sides of the top of the base plate 2. The bottom of the top frame 11 is slidably connected to the surface of the sliding strips, which can limit the position of the top frame 11. The top frame 11 is threaded to the surface of the screw 10, and the arc-shaped clamping plate 12 is fixedly connected to one side of the top frame 11. The arc-shaped clamping plate 12 fits with the sealing ring 8, which can drive the sealing ring 8 to engage and play a limiting and clamping role for the sealing ring 8. The clamping assembly is used to clamp the sealing ring 8.

[0028] Example 2

[0029] Please see Figures 1-5Based on Embodiment 1, a first pulley 13 is fixedly connected to one side of the surface of the first lead screw 5, and a second pulley 14 is fixedly connected to one side of the surface of the second lead screw 6. Both the first pulley 13 and the second pulley 14 are located within the cavity inside the base plate 2, so that the rotation of the first lead screw 5 can drive the second lead screw 6 to rotate synchronously. The first pulley 13 and the second pulley 14 are connected via belt drive. A magnet 15 is fixedly connected to one side of the closed ring 8, and an adsorption block 16 is fixedly connected to the other side of the closed ring 8. The magnet 15 and the adsorption block 16 can seal the connection point of the closed ring 8 when it is engaged, ensuring that the resistance heating coil 20 can maintain a constant temperature inside the extrusion cylinder 3. The top of the base plate 2 is fixed... A limiting plate 17 is connected, and limiting grooves are opened on both sides of the limiting plate 17. A limiting strip 18 is fixedly connected to one side of the lifting seat 7. The limiting strip 18 slides inside the limiting groove, which can support and limit the lifting seat 7. One side of the limiting strip 18 is slidably connected to the inner cavity of the limiting groove. A drive motor 19 is fixedly connected to one side of the bottom of the base plate 2. The output end of the drive motor 19 is fixedly connected to one end of the first lead screw 5. A resistance heating coil 20 is fixedly connected to the inner cavity of the closed ring 8. The resistance heating coil 20 is a common structure of the constant temperature system of the blown film machine for mulch film processing, which will not be described in detail here. The resistance heating coil 20 is used to ensure the constant temperature inside the extrusion cylinder 3. Slide grooves are opened on both sides of the support frame 4. One side of the surface of the lifting seat 7 is slidably connected to the inner cavity of the slide groove.

[0030] The working principle of this utility model is as follows: When the main constant temperature equipment malfunctions, the drive motor 19 starts, driving the first lead screw 5 to rotate, so that the lifting seat 7 can separate the main sealing ring 8 from the surface of the extrusion cylinder 3 and lower it below the extrusion cylinder 3 for easy disassembly and maintenance. At the same time, the first pulley 13 drives the second pulley 14 to rotate, so that the second lead screw 6 rotates synchronously in the opposite direction, driving the lifting seat 7 to move vertically along the slide groove of the support frame 4, quickly lifting the spare sealing ring 8 with the built-in resistance heating coil 20 to the heating position of the extrusion cylinder 3. At the same time, the dual-shaft motor 9 drives the screw 10 to rotate, pushing the top frame 11 and the arc-shaped clamping plate 12 to move towards the center, so that the spare sealing ring 8 is tightly attached to the surface of the extrusion cylinder 3 by the magnet 15 and the adsorption block 16, completing the mechanical clamping and sealing. The resistance heating coil 20 is then energized to maintain the constant temperature of the molten plastic in the extrusion cylinder 3. The sliding cooperation of the limiting plate 17 and the limiting strip 18 ensures that the lifting process is stable and without deviation, thereby realizing the seamless switching of the main and backup heating systems and ensuring continuous production of the blown film machine.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multifunctional device for controlling the temperature of a blown film machine used in mulch film processing, comprising a support frame (1), characterized in that: A base plate (2) is fixedly connected to the bottom of the bracket (1), and an extrusion cylinder (3) is fixedly connected to the inner cavity of the bracket (1). The bottom plate (2) is provided with a switching assembly. The switching assembly includes a support frame (4) fixedly connected to the top of the bottom plate (2), a first lead screw (5) movably connected to one side of the inner cavity of the support frame (4), a second lead screw (6) movably connected to the other side of the inner cavity of the support frame (4), a lifting seat (7) threadedly connected to the surfaces of the first lead screw (5) and the second lead screw (6), and a closing ring (8) movably connected to the top of the lifting seat (7). The switching assembly is used to switch the heating equipment. The base plate (2) is provided with a clamping assembly on the top. The clamping assembly includes a dual-axis motor (9) fixedly connected to both sides of the top of the base plate (2), a screw (10) fixedly connected to the output end of the dual-axis motor (9), a top frame (11) threadedly connected to the surface of the screw (10), and an arc-shaped clamping plate (12) fixedly connected to one side of the top frame (11). The clamping assembly is used to clamp the closed ring (8).

2. The multifunctional temperature control device for blown film processing according to claim 1, characterized in that: A first pulley (13) is fixedly connected to one side of the surface of the first lead screw (5), and a second pulley (14) is fixedly connected to one side of the surface of the second lead screw (6). The first pulley (13) and the second pulley (14) are connected by belt drive.

3. The multifunctional temperature control device for blown film processing according to claim 1, characterized in that: A magnet (15) is fixedly connected to one side of the closed ring (8), and an adsorption block (16) is fixedly connected to the other side of the closed ring (8).

4. The multifunctional temperature control device for blown film processing according to claim 1, characterized in that: The bottom plate (2) is fixedly connected to the top of the limiting plate (17), and the limiting plate (17) has limiting grooves on both sides. The lifting seat (7) is fixedly connected to one side of the limiting strip (18), and the limiting strip (18) is slidably connected to the inner cavity of the limiting groove on one side.

5. The multifunctional temperature control device for blown film processing according to claim 1, characterized in that: A drive motor (19) is fixedly connected to one side of the bottom of the base plate (2), and the output end of the drive motor (19) is fixedly connected to one end of the first lead screw (5).

6. The multifunctional temperature control device for blown film processing according to claim 1, characterized in that: A resistance heating coil (20) is fixedly connected to the inner cavity of the closed ring (8), and the resistance heating coil (20) is used to ensure a constant temperature inside the extrusion cylinder (3).

7. The multifunctional temperature control device for blown film processing according to claim 1, characterized in that: The support frame (4) has sliding grooves on both sides, and one side of the surface of the lifting seat (7) is slidably connected to the inner cavity of the sliding groove.

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