Twin-screw extruder for producing plastic products

Abstract

The utility model discloses a twin-screw extruder for producing plastic products, which comprises a base, a twin-screw extruder body is mounted at the top of the base, and a feeding mechanism is arranged at the top of the twin-screw extruder body. According to the double-screw extruder for producing the plastic products, the screening net is arranged in the discharging hopper, materials are screened through the screening net, then the situation that large-particle materials enter the double-screw extruder, and consequently the double-screw extruder is blocked is prevented, under the driving of the driving motor, the discharging hopper and the screening net do vertical reciprocating motion, and therefore the discharging hopper and the screening net do vertical reciprocating motion. According to the vibrating screening device, vibrating operation is achieved, then the screening effect and screening efficiency of the screening net on materials are improved, positioning and limiting are conducted through a positioning plate, a positioning rod, a limiting groove and a limiting plate, and the discharging hopper and the screening net are more stable during vibrating screening operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to double screw extruder technical field, concretely is a kind of double screw extruder for plastic product production. BACKGROUND

[0002] Reference patent name is: a double screw extruder for plastic product production (patent publication number: CN217373392U, patent publication date: 2022.09.06), including support plate, the top of the support plate is fixedly installed with shell, the top of the support plate and the left side of shell are provided with driving motor, the output end of the driving motor is fixedly installed with driving gear, this double screw extruder is filtered and selected to material by being cooperated between support plate, support leg, shell, discharge hopper, extrusion pipe, sealing sleeve, mounting seat, driving motor, driving gear, driven gear, limit ring, feed pipe, material guide pipe, feed hopper, vibration motor, fixed plate, conveying roller, conveying pipe, screening net, limit groove, sliding block, reset spring, to further prevent the device from being blocked, while solve the existing double screw extruder when feeding, not have the function of screening material, cause double screw extruder to be easily blocked, reduce the practicability of device problem.

[0003] However, in the implementation of the above technical solutions, the following problems exist: the above technical solutions realize the shaking operation of the screening net by setting the vibration motor, the sliding block and the reset spring and other structural members, thereby improving the screening efficiency of the screening net on the material, but the reset spring is greatly worn after long-term use, which affects the screening effect of the screening net on the material, and the screening net in the above technical solutions is inconvenient to replace and clean after long-term use, which affects the work efficiency, therefore, the utility model provides a double screw extruder for plastic product production. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a double screw extruder for plastic product production, which solves the problems of poor stability of the screening structure in the existing double screw extruder, easy influence on the screening effect and screening quality of the material, and inconvenient disassembly and installation of the screening net in the existing screening structure.

[0005] In order to achieve the above object, the utility model discloses a double screw extruder for plastic product production, including the base, the top of base is installed with double screw extruder body, the top of double screw extruder body is equipped with feeding mechanism, including: feeding assembly, including the feeding pipe of installation at the top of double screw extruder body, the inside slide coupling of feeding pipe has the discharge hopper, the inside slide coupling of discharge hopper has the screening net, the surface fixed coupling of discharge hopper has the connecting ring, the one side fixed coupling of connecting ring has the connecting plate, the top fixed coupling of connecting plate has the connecting rod, the surface rotationally connected of connecting rod has the support plate, positioning assembly sets up at the bottom of connecting plate for the sliding of connecting plate is positioned, drive assembly sets up at the top of double screw extruder body, mounting assembly sets up at the surface of discharge hopper for realizing the mounting operation of screening net.

[0006] Preferably, the positioning assembly includes a positioning plate installed on the top of the double screw extruder body, the inside of the positioning plate is slidably connected with a positioning rod, and the top end of the positioning rod is fixedly connected with the bottom of the connecting plate.

[0007] Preferably, the drive assembly includes a drive motor installed on one side of the positioning plate, one end of the output shaft of the drive motor is fixedly connected with a drive disc through a shaft coupling, one side of the drive disc is fixedly connected with a drive rod, and the surface of the drive rod is rotatably connected with one end of the support plate.

[0008] Preferably, the mounting assembly includes a mounting box installed on the surface of the discharge hopper, the inside of the mounting box is slidably connected with a mounting rod, the top end of the mounting rod is fixedly connected with a control block, the surface of the mounting rod is fixedly connected with a mounting spring, one end of the mounting spring is fixedly connected with the top of the inner cavity of the mounting box, and the bottom end of the mounting rod is fixedly connected with a mounting block.

[0009] Preferably, one side of the screening net is fixedly connected with a pair of symmetrical sliding rods, the surface of the sliding rods is slidably connected with the inside of the mounting box, the top of the sliding rods is provided with a mounting groove, and the inner surface of the mounting groove is clamped with the surface of the mounting block.

[0010] Preferably, the surface of the discharge hopper is fixedly connected with a limiting plate, and the inner wall of the feeding pipe is provided with a limiting groove, and the surface of the limiting plate is slidably connected with the inner surface of the limiting groove.

[0011] Beneficial effects

[0012] The utility model provides a double screw extruder for plastic product production, compared with prior art has the following beneficial effects:

[0013] (1), the double screw extruder for plastic product production, through the starting drive motor drives the driving disc and the driving rod rotation, the rotation of the driving rod makes the bottom end of the support plate rotation on the surface of the driving rod, makes the top end of the support plate rotation on the surface of the connecting rod, because the driving rod and the driving disc is eccentric design, will thereby make the connecting rod, connecting plate, connecting ring and discharge hopper synchronous up and down reciprocating sliding, realize the shaking operation, through the sieve screen in the discharge hopper, the material is screened through the sieve screen, thereby preventing large particle material into the double screw extruder, cause the double screw extruder blockage situation, and through the driving of the drive motor, makes the discharge hopper and sieve screen do up and down reciprocating motion, realize the shaking operation, thereby improve the screening effect and screening efficiency of the sieve screen to the material, and through the setting of the positioning plate, positioning rod, limiting groove and limiting plate positioning and limiting, make the discharge hopper and sieve screen more stable when carrying on the shaking screening operation.

[0014] (2), the double screw extruder for plastic product production, by pulling the control block upwards drives the installation rod and the installation block to slide upwards synchronously, makes the installation block slide out of the installation slot, at the same time makes the installation spring be compressed, then directly draws out the sieve screen and the sliding rod, when it is needed to reinstall the sieve screen, only need to directly insert the sieve screen into the discharge hopper, insert the sliding rod into the installation box, insert the installation rod into the installation slot, the installation rod will be affected by the elasticity of the installation spring, makes the installation rod and the installation slot keep clamping fixed, through the setting of the installation assembly, realizes the quick installation and disassembly operation of the sieve screen, so as to improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the external structure perspective view of the utility model;

[0016] Figure 2 It is the perspective view of the utility model feeding assembly;

[0017] Figure 3 It is the explosion structure schematic view of the utility model feeding pipe and discharge hopper;

[0018] Figure 4 It is the perspective view of the utility model installation assembly.

[0019] In the figure: 1 - base, 2 - double screw extruder body, 3 - feeding mechanism, 31 - feeding assembly, 311 - feeding pipe, 312 - discharge hopper, 313 - screening net, 314 - connecting ring, 315 - connecting plate, 316 - connecting rod, 317 - supporting plate, 32 - positioning assembly, 321 - positioning plate, 322 - positioning rod, 33 - driving assembly, 331 - driving motor, 332 - driving disc, 333 - driving rod, 34 - mounting assembly, 341 - mounting box, 342 - mounting rod, 343 - control block, 344 - mounting spring, 345 - mounting block, 4 - sliding rod, 5 - mounting groove, 6 - limiting plate, 7 - limiting groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0022] A double screw extruder for plastic product production, including base 1, the top of base 1 is installed with double screw extruder body 2, the top of double screw extruder body 2 is equipped with feeding mechanism 3, feeding mechanism 3 includes: feeding assembly 31, including the feeding pipe 311 of installation in the top of double screw extruder body 2, the inside sliding connection of feeding pipe 311 has discharge hopper 312, the inside sliding connection of discharge hopper 312 has screening net 313, the surface fixed connection of discharge hopper 312 has connecting ring 314, the side fixed connection of connecting ring 314 has connecting plate 315, the top fixed connection of connecting plate 315 has connecting rod 316, the surface rotary connection of connecting rod 316 has supporting plate 317;Positioning assembly 32 is set at the bottom of connecting plate 315, and is used for limiting the sliding of connecting plate 315;Driving assembly 33 is arranged above double screw extruder body 2;Mounting assembly 34 is arranged on the surface of discharge hopper 312, and is used for realizing the mounting operation of screening net 313.

[0023] The double screw extruder is mainly composed of two intermeshing screw rods, divided into three sections of feeding section, compression section and homogenizing section, and the working principle is to heat, melt and extrude plastic particles by two rotating screw rods. This design makes the plastic particles first pass through the heating section after entering the machine, then melt and mix in the compression section, and finally be uniformly extruded in the homogenizing section; the bottom end of the feeding pipe 311 extends through to the inside of the double screw extruder body 2.

[0024] In the embodiment, the positioning assembly 32 comprises a positioning plate 321 installed on the top of the double-screw extruder body 2, and a positioning rod 322 is slidably connected in the positioning plate 321, and the top end of the positioning rod 322 is fixedly connected with the bottom of the connecting plate 315.

[0025] The positioning rod 322 and the positioning plate 321 are used for positioning the up-down reciprocating sliding of the feeding hopper 312, the screening net 313, the connecting ring 314, the connecting plate 315 and the connecting rod 316, so as to improve the stability.

[0026] In the embodiment, the driving assembly 33 comprises a driving motor 331 installed on one side of the positioning plate 321, one end of the output shaft of the driving motor 331 is fixedly connected with a driving disc 332 through a shaft coupling, one side of the driving disc 332 is fixedly connected with a driving rod 333, and the surface of the driving rod 333 is rotatably connected with one end of the supporting plate 317.

[0027] The driving motor 331 is a three-phase asynchronous motor, and is connected with an external circuit through an electric wire; one side of the driving disc 332 is rotatably connected with the inside of the positioning plate 321.

[0028] The driving of the driving motor 331 drives the driving disc 332 and the driving rod 333 to rotate, the rotation of the driving rod 333 drives the bottom end of the supporting plate 317 to rotate on the surface of the driving rod 333, and the top end of the supporting plate 317 rotates on the surface of the connecting rod 316. Since the driving rod 333 is eccentrically designed with the driving disc 332, the connecting rod 316, the connecting plate 315, the connecting ring 314 and the feeding hopper 312 are synchronously driven to reciprocate up and down, so as to realize the shaking operation. The screening net 313 is arranged in the feeding hopper 312, the material is screened through the screening net 313, so as to prevent the large-particle material from entering the double-screw extruder and causing the blockage of the double-screw extruder. The driving of the driving motor 331 drives the feeding hopper 312 and the screening net 313 to reciprocate up and down, so as to realize the shaking operation, improve the screening effect and efficiency of the material by the screening net 313, and position and limit the feeding hopper 312 and the screening net 313 through the positioning plate 321, the positioning rod 322, the limiting groove 7 and the limiting plate 6, so that the feeding hopper 312 and the screening net 313 are more stable during the shaking and screening operation.

[0029] In the embodiment, the mounting assembly 34 comprises a mounting box 341 mounted on the surface of the feeding hopper 312, a mounting rod 342 is slidably connected in the mounting box 341, a control block 343 is fixedly connected with the top end of the mounting rod 342, a mounting spring 344 is fixedly connected with the surface of the mounting rod 342, one end of the mounting spring 344 is fixedly connected with the top of the inner cavity of the mounting box 341, and a mounting block 345 is fixedly connected with the bottom end of the mounting rod 342.

[0030] When the spring 344 is not affected by external force, the surface of the mounting block 345 will always be engaged with the inner surface of the mounting groove 5.

[0031] In this embodiment, a symmetrical sliding rod 4 is fixedly connected to one side of the screening mesh 313. The surface of the sliding rod 4 is slidably connected to the inside of the mounting box 341. A mounting groove 5 is provided on the top of the sliding rod 4. The inner surface of the mounting groove 5 is engaged with the surface of the mounting block 345.

[0032] A sliding groove is provided on one side of the mounting box 341 for the sliding rod 4 to slide.

[0033] In this embodiment, a limiting plate 6 is fixedly connected to the surface of the discharge funnel 312, and a limiting groove 7 is formed on the inner wall of the feed pipe 311. The surface of the limiting plate 6 is slidably connected to the inner surface of the limiting groove 7.

[0034] The limiting plate 6 and the limiting groove 7 are used to position the up-and-down reciprocating sliding of the discharge funnel 312, the screening screen 313, the connecting ring 314, the connecting plate 315 and the connecting rod 316, thereby improving stability.

[0035] By pulling the control block 343 upward, the mounting rod 342 and the mounting block 345 slide upward synchronously, causing the mounting block 345 to slide out of the mounting groove 5. At the same time, the mounting spring 344 is compressed. Then, the screen 313 and the sliding rod 4 can be directly pulled out. When the screen 313 needs to be reinstalled, simply insert the screen 313 into the discharge funnel 312, insert the sliding rod 4 into the mounting box 341, and insert the mounting rod 342 into the mounting groove 5. Under the influence of the elasticity of the mounting spring 344, the mounting rod 342 will be locked and fixed in the mounting groove 5. By setting the mounting component 34, the screen 313 can be quickly installed and removed, thereby improving work efficiency.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] In work, first, material is introduced into the feeding hopper 312, and the material falls on the screening net 313, and the material is screened under the action of the screening net 313, thereby preventing large-particle material from entering the double-screw extruder body 2 and causing blockage, then, the driving motor 331 is started to drive the driving disc 332 and the driving rod 333 to rotate, the rotation of the driving rod 333 drives the bottom end of the supporting plate 317 to rotate on the surface of the driving rod 333, and the top end of the supporting plate 317 rotates on the surface of the connecting rod 316, since the driving rod 333 is eccentrically designed with the driving disc 332, the connecting rod 316, the connecting plate 315, the connecting ring 314 and the feeding hopper 312 are synchronously subjected to up-down reciprocating sliding to realize the shaking operation, and the shaking of the feeding hopper 312 drives the screening net 313 installed in the feeding hopper 312 to synchronously shake, thereby improving the screening effect and efficiency of the screening net 313, when the work is completed, the surface of the screening net 313 is easy to adhere to a large amount of impurities, and the screening net 313 needs to be replaced or cleaned, at this time, the control block 343 is pulled upward to drive the mounting rod 342 and the mounting block 345 to synchronously slide upward, so that the mounting block 345 slides out of the mounting groove 5, and at the same time, the mounting spring 344 is compressed, then the screening net 313 and the sliding rod 4 are directly pulled out, when the screening net 313 needs to be reinstalled, the screening net 313 is directly inserted into the feeding hopper 312, the sliding rod 4 is inserted into the mounting box 341, and the mounting rod 342 is inserted into the mounting groove 5, the mounting rod 342 is kept in clamping and fixing with the mounting groove 5 under the elastic influence of the mounting spring 344, thereby realizing the quick installation of the screening net 313.

[0038] 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.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder for producing plastic products, comprising a base (1), a twin-screw extruder body (2) being mounted on the top of the base (1), characterized in that: The top of the double screw extruder body (2) is provided with a feeding mechanism (3), which comprises a feeding assembly (31) including a feeding pipe (311) installed on the top of the double screw extruder body (2), a discharge funnel (312) slidably connected inside the feeding pipe (311), a screening net (313) slidably connected inside the discharge funnel (312), a connecting ring (314) fixedly connected to the surface of the discharge funnel (312), a connecting plate (315) fixedly connected to one side of the connecting ring (314), a connecting rod (316) fixedly connected to the top of the connecting plate (315), and a support plate (317) rotatably connected to the surface of the connecting rod (316); a positioning assembly (32) arranged at the bottom of the connecting plate (315) for limiting the sliding of the connecting plate (315); a driving assembly (33) arranged above the double screw extruder body (2); and a mounting assembly (34) arranged on the surface of the discharge funnel (312) for mounting the screening net (313).

2. The twin-screw extruder for producing a plastic product according to claim 1, characterized by: The positioning assembly (32) comprises a positioning plate (321) installed on the top of the double screw extruder body (2), and a positioning rod (322) slidably connected inside the positioning plate (321), with the top end of the positioning rod (322) fixedly connected to the bottom of the connecting plate (315).

3. The twin-screw extruder for producing a plastic product according to claim 2, characterized in that: The driving assembly (33) comprises a driving motor (331) installed on one side of the positioning plate (321), with a driving disc (332) fixedly connected to one end of the output shaft of the driving motor (331) through a shaft coupling, a driving rod (333) fixedly connected to one side of the driving disc (332), and the driving rod (333) rotatably connected to one end of the support plate (317).

4. The twin-screw extruder for producing a plastic product according to claim 1, characterized in that: The mounting assembly (34) comprises a mounting box (341) mounted on the surface of the discharge funnel (312), a mounting rod (342) slidably connected inside the mounting box (341), a control block (343) fixedly connected to the top end of the mounting rod (342), a mounting spring (344) fixedly connected to the surface of the mounting rod (342), one end of the mounting spring (344) fixedly connected to the top of the inner cavity of the mounting box (341), and a mounting block (345) fixedly connected to the bottom end of the mounting rod (342).

5. The twin-screw extruder for producing a plastic product according to claim 4, characterized in that: One side of the screening net (313) is fixedly connected to a pair of symmetrical sliding rods (4), the surfaces of the sliding rods (4) are slidably connected to the inside of the mounting box (341), the top of each sliding rod (4) is provided with a mounting groove (5), and the inner surface of each mounting groove (5) is clamped with the surface of the mounting block (345).

6. The twin-screw extruder for producing a plastic product according to claim 1, wherein: The surface of the discharge funnel (312) is fixedly connected with a limiting plate (6), and the inner wall of the feeding pipe (311) is provided with a limiting groove (7), and the surface of the limiting plate (6) is slidably connected with the inner surface of the limiting groove (7).

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