Thermoplastic elastomer particle screening device

Abstract

The thermoplastic elastomer particle screening device comprises a base, a support and a screening frame, a discharging assembly is arranged in the screening frame, a discharging opening is formed in one side of the screening frame, a discharging frame door is arranged on the discharging opening in a rotating mode, a limiting plate is fixedly connected to the discharging frame door, and a tension spring is arranged between the discharging frame door and the screening frame. The discharging assembly comprises a discharging plate, a discharging air cylinder and a door ejecting plate, the discharging plate is arranged in the screening frame in a sliding mode, the discharging air cylinder is arranged on the screening frame, an output shaft of the discharging air cylinder is fixedly connected with the discharging plate, and the door ejecting plate is fixedly connected with the discharging plate. The top door plate is fixedly connected to the discharging plate, and the end of the top door plate faces the discharging frame door. According to the thermoplastic elastomer particle screening device, automatic discharging of materials in the screening frame can be achieved through cooperation of the discharging assembly and the discharging frame door, manpower is saved, and efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermoplastic elastomer production equipment, in particular to a thermoplastic elastomer particle screening device. Background Art

[0002] Thermoplastic elastomer, also known as artificial rubber or synthetic rubber, has the characteristics of high elasticity, aging resistance, oil resistance of traditional cross-linked vulcanized rubber and convenient plastic processing and a wide range of processing methods of ordinary plastics. It can be produced by processing methods such as injection molding, extrusion, and blow molding. After the granulation production of thermoplastic elastomer is completed, it is also necessary to screen the thermoplastic elastomer particles to classify the particles of different sizes formed during production for subsequent classification and packaging. In the prior art, the utility model patent: a thermoplastic elastomer particle size screening device (publication number: CN215039335U) discloses a screening device that can perform multi-stage screening on particles of different sizes. However, after the screening operation is completed, this screening device requires manual unloading of the material frame for discharging. Since the material frame and the thermoplastic elastomer placed in the material frame after screening have a certain weight, it is not convenient to operate and consumes manpower.

[0003] In view of the above problems, the utility model is improved. Summary of the Utility Model

[0004] The utility model provides a thermoplastic elastomer particle screening device, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is realized as follows:

[0006] A thermoplastic elastomer particle screening device includes a base, a bracket, and a screening frame. The bracket is slidably arranged on the base and is in transmission connection with a driving structure. A plurality of the screening frames are longitudinally arranged on the bracket, and a plurality of screening holes are arranged on the screening frame. A blanking assembly is arranged in the screening frame. A blanking port is formed on one side of the screening frame, and a blanking frame door is rotatably arranged on the blanking port. A limiting plate is fixedly connected to the blanking frame door. A tension spring is arranged between the blanking frame door and the screening frame. The limiting plate tightly abuts against the screening frame under the action of the tension spring to close the blanking port. The blanking assembly includes a blanking plate, a blanking cylinder, and a top door plate. The blanking plate is slidably arranged in the screening frame opposite to the blanking port. The blanking cylinder is arranged on the screening frame, and the output shaft of the blanking cylinder is fixedly connected to the blanking plate. The top door plate is fixedly connected to the blanking plate, and the end of the top door plate faces the blanking frame door.

[0007] Preferably, two support rods are arranged on the outer sides of the two side plates of the screening frame perpendicular to the blanking frame door, and a sliding plate is formed at each end of the blanking plate and is inserted through the support rods.

[0008] Preferably, two slide rails are arranged on the base, and a plurality of pulleys placed on the slide rails are rotatably arranged at the lower end of the bracket. The driving structure includes a motor, a driving wheel disc and a driving arm. The motor is fixedly arranged on the base, the driving wheel disc is fixedly connected to the output shaft of the motor, one end of the driving arm is rotatably connected to the driving wheel disc, and the other end is rotatably connected to the bracket.

[0009] Preferably, a plurality of mounting cross bars are formed on the bracket on both sides of the screening frame. Mounting parts with a horizontally placed L-shaped cross section are formed on both sides of the screening frame. The horizontal part of the mounting part is placed on the mounting cross bar, and the vertical part of the mounting part abuts against the outer side surface of the mounting cross bar.

[0010] Preferably, the lower end of the screening frame is formed with a blanking port in an open shape. A plug-in groove penetrating the screening frame to one side is opened on the side wall of the blanking port. A screening plate for covering the blanking port is inserted into the plug-in groove, and the screening holes are arranged on the screening plate.

[0011] Preferably, a guide plate is fixedly connected to the screening frame and is inclined on one side of the blanking port.

[0012] Preferably, the lengths of the guide plates on a plurality of the screening frames gradually shorten from top to bottom.

[0013] In summary, the beneficial effects of the present utility model are as follows: Through the cooperation of the blanking assembly and the blanking frame door, after the screening operation is completed, the thermoplastic elastomer particles in the screening frame can be pushed out of the screening frame through the blanking port, so as to realize the blanking after screening, eliminating the trouble of disassembling and assembling the screening frame during blanking, thus saving manpower and improving the efficiency of the screening operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is an exploded schematic diagram of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the screening frame and the blanking assembly in the present utility model;

[0018] Figure 4 is an exploded schematic diagram of the screening frame and the blanking assembly in the present utility model;

[0019] Figure 5 This is a schematic structural diagram of the screening frame in the present utility model;

[0020] Figure 6 is Figure 5 an enlarged schematic diagram of position A in

[0021] In the figure: 1, base; 11, slide rail; 12, motor; 13, driving wheel disc; 14, driving arm; 2, bracket; 21, pulley; 22, mounting cross bar; 3, screening frame; 31, material discharge opening; 32, material discharge frame door; 321, limiting plate; 33, tension spring; 34, support rod; 35, mounting part; 36, blanking opening; 361, insertion slot; 37, screening plate; 371, screening hole; 38, guide plate; 41, blanking plate; 411, sliding plate; 42, blanking cylinder; 43, top door plate. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying Figures 1-6 drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] As shown in the figure, a screening device for thermoplastic elastomer particles includes a base 1, a bracket 2, and a screening frame 3. The bracket 2 is slidably arranged on the base 1 and is in transmission connection with a driving structure. A plurality of the screening frames 3 are longitudinally arranged on the bracket 2, and a plurality of screening holes 371 are provided on the screening frame 3. The screening holes 371 on the plurality of screening frames 3 gradually decrease in size from top to bottom in the order of arrangement. A blanking assembly is arranged in the screening frame 3. A blanking port 31 is formed on one side of the screening frame 3, and a blanking frame door 32 is rotatably arranged on the blanking port 31. Specifically, the upper end of the blanking frame door 32 is rotatably connected to the screening frame 3. A limiting plate 321 is fixedly connected to the blanking frame door 32. A tension spring 33 is arranged between the blanking frame door 32 and the screening frame 3. One end of the tension spring 33 is connected to the screening frame 3, and the other end is connected to the lower end of the blanking frame door 32. The tension spring 33 applies a restoring force to the swing of the blanking frame door 32 on the blanking port 31, so that the limiting plate 321 tightly abuts against the screening frame 3 under the action of the tension spring 33 to close the blanking port 31 with the blanking frame door 32. The blanking assembly includes a blanking plate 41, a blanking cylinder 42, and a top door plate 43. The blanking plate 41 is slidably arranged in the screening frame 3 opposite to the blanking port 31. The blanking cylinder 42 is arranged on the screening frame 3, and the output shaft of the blanking cylinder 42 is fixedly connected to the blanking plate 41. The top door plate 43 is fixedly connected to the blanking plate 41, and the end of the top door plate 43 faces the blanking frame door 32 and the top door plate 43 is located on one side of the inner wall of the side plate of the screening frame 3 and contacts the inner wall of the side plate of the screening frame 3.

[0024] Specifically, the structure of the blanking plate 41 slidably arranged in the screening frame 3: Two support rods 34 are arranged on the outer sides of the two side plates of the screening frame 3 perpendicular to the blanking frame door 32. A sliding plate 411 is formed at each end of the blanking plate 41 and is inserted through the support rod 34. Through the above structure, the sliding of the blanking plate 41 in the screening frame 3 is realized by the sliding of the sliding plate 411 on the support rod 34, which can ensure that the side end of the blanking plate 41 remains in contact with the inner wall of the side plate of the screening frame 3 during sliding.

[0025] Specifically, the structure of the bracket 2 slidably arranged on the base 1 and in transmission connection with the driving structure: Two slide rails 11 are arranged on the base 1. A plurality of pulleys 21 are rotatably arranged at the lower end of the bracket 2 and are placed on the slide rails 11. The driving structure includes a motor 12, a driving wheel disc 13, and a driving arm 14. The motor 12 is fixedly arranged on the base 1. The driving wheel disc 13 is fixedly connected to the output shaft of the motor 12. One end of the driving arm 14 is eccentrically rotatably connected to the driving wheel disc 13, and the other end is rotatably connected to the bracket 2.

[0026] Specifically, the structure of the screening frame 3 disposed on the support 2: A plurality of mounting cross bars 22 are formed on the support 2 on both sides of the screening frame 3. Mounting portions 35 with a horizontally disposed L-shaped cross section are formed on both sides of the screening frame 3. The horizontal portion of the mounting portion 35 is placed on the mounting cross bar 22, and the vertical portion of the mounting portion 35 abuts against the outer side surface of the mounting cross bar 22. With the above structure, the disassembly and assembly of the screening frame 3 on the support 2 are facilitated, and it is convenient to reasonably set the number of screening frames 3 according to the requirements of the screen layer level during the screening operation.

[0027] In the above embodiment, before the screening operation of the thermoplastic elastomer particles (hereinafter referred to as particles), the blanking cylinder 42 drives the blanking plate 41 to slide to the side plate of the screening frame 3 opposite to the blanking port 31 and contact with the side plate. The top door plate 43 slides into the screening frame 3 along with the blanking plate 41. The blanking frame door 32 swings with the limiting plate 321 under the action of the tension spring 33, so that the limiting plate 321 abuts against the screening frame 3 to close the blanking port 31. At this time, the end of the top door plate 43 is located on one side of the blanking frame door 32 and contacts the blanking frame door 32. During the screening operation, the particles to be screened are placed into the uppermost screening frame 3, so that the particles are located between the blanking plate 41 and the blanking frame door 32. The motor 12 drives the driving wheel disc 13 to rotate, and the driving wheel disc 13 drives the driving arm 14 to reciprocate, so that the driving arm 14 drives the support 2 to reciprocate on the base 1 through the cooperation of the pulley 21 and the slide rail 11. The support 2 drives a plurality of screening frames 3 disposed thereon to reciprocate simultaneously. Different-sized particles in the screening frame 3 are screened through screening holes 371 with different apertures. After the screening is completed, the blanking cylinder 42 drives the blanking plate 41 to slide towards the blanking frame door 32. During the sliding process of the blanking plate 41, the particles in the screening frame 3 are pushed towards the blanking frame door 32. At the same time, the top door plate 43 pushes the blanking frame door 32 under the drive of the blanking plate 41, so that the blanking frame door 32 swings upward to open the blanking port 31. The particles pushed by the blanking plate 41 are discharged from the screening frame 3 through the blanking port 31 after passing through the blanking port 31, thereby saving the disassembly and assembly of the screening frame 3 during the blanking process, saving manpower, and improving the efficiency of the screening operation.

[0028] Preferably, the lower end of the screening frame 3 is formed with an open blanking port 36. A plug-in slot 361 penetrating the screening frame 3 to one side is opened on the side wall of the blanking port 36, that is, the plug-in slot 361 has two ports penetrating the screening frame 3 towards the direction of the blanking port 31. A screening plate 37 covering the blanking port 36 is inserted into the plug-in slot 361. The screening holes 371 are provided on the screening plate 37. With the above structure, the screening plate 37 can be disassembled from the screening frame 3 by plugging and unplugging, and the operation is very convenient. Thus, it is convenient to meet the screening requirements of particles of different sizes by replacing the screening plate 37 with screening holes 371 of different apertures, making the screening device have better applicability.

[0029] Preferably, a guiding plate 38 is fixedly connected to the screening frame 3 and is inclined and located on one side of the blanking port 31. When the particles in the screening frame 3 are pushed by the blanking plate 41 for blanking, the particles passing through the blanking port 31 fall onto the guiding plate 38 and roll down along the guiding plate 38, playing a guiding role for the particles during blanking, so that the particles can accurately fall into a receiving box (not shown in the figure) placed beside the base 1 and below the guiding plate 38, thus facilitating the collection of the screened particles.

[0030] Preferably, the lengths of the guiding plates 38 on several screening frames 3 gradually shorten from top to bottom, that is, the side end of the upper guiding plate 38 for material falling is farther away from the support 2 compared to the side end of the lower guiding plate 38 for material falling. When performing the blanking operation of the particles in the screening frames 3 at different positions from top to bottom, it is ensured that the particles falling through the upper guiding plate 38 will not fall onto the lower guiding plate 38, avoiding the splashing of the particles when falling into the receiving box, and thus ensuring that the particles of different sizes stably fall into the receiving box during blanking.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A thermoplastic elastomer particle screening device, comprising a base (1), a bracket (2) and a screening frame (3), wherein the bracket (2) is slidably arranged on the base (1) and is in transmission connection with a driving structure, and a plurality of the screening frames (3) are longitudinally arranged on the bracket (2) and a plurality of screening holes (371) are arranged on the screening frame (3), and it is characterized in that: A blanking component is arranged inside the screening frame (3). A blanking opening (31) is formed on one side of the screening frame (3). A blanking frame door (32) is rotatably arranged on the blanking opening (31). A limiting plate (321) is fixedly connected to the blanking frame door (32). A tension spring (33) is arranged between the blanking frame door (32) and the screening frame (3). Under the action of the tension spring (33), the limiting plate (321) tightly abuts against the screening frame (3) to close the blanking opening (31) with the blanking frame door (32). The blanking component includes a blanking plate (41), a blanking cylinder (42) and a top door plate (43). The blanking plate (41) is slidably arranged inside the screening frame (3) opposite to the blanking opening (31). The blanking cylinder (42) is arranged on the screening frame (3), and the output shaft of the blanking cylinder (42) is fixedly connected to the blanking plate (41). The top door plate (43) is fixedly connected to the blanking plate (41), and the end of the top door plate (43) faces the blanking frame door (32).

2. The thermoplastic elastomer particle screening device according to claim 1, characterized in that: Two support rods (34) are arranged on the outer sides of the two side plates of the screening frame (3) perpendicular to the blanking frame door (32). A sliding plate (411) penetrating through the support rods (34) is formed at each end of the blanking plate (41).

3. The thermoplastic elastomer particle screening device according to claim 2, wherein: Two slide rails (11) are arranged on the base (1). A plurality of pulleys (21) placed on the slide rails (11) are rotatably arranged at the lower end of the bracket (2). The driving structure includes a motor (12), a driving wheel disc (13) and a driving arm (14). The motor (12) is fixedly arranged on the base (1). The driving wheel disc (13) is fixedly connected to the output shaft of the motor (12). One end of the driving arm (14) is rotatably connected to the driving wheel disc (13), and the other end is rotatably connected to the bracket (2).

4. The thermoplastic elastomer particle screening device according to claim 3, characterized in that: A plurality of mounting cross bars (22) are formed on the bracket (2) on both sides of the screening frame (3). Mounting parts (35) with a horizontally placed L-shaped cross section are formed on both sides of the screening frame (3). The horizontal part of the mounting part (35) is placed on the mounting cross bar (22), and the vertical part of the mounting part (35) abuts against the outer side surface of the mounting cross bar (22).

5. The thermoplastic elastomer particle screening device according to claim 4, wherein: The lower end of the screening frame (3) is formed with a blanking opening (36) in an open shape. A plug-in slot (361) penetrating through the screening frame (3) to one side is formed on the side wall of the blanking opening (36). A screening plate (37) covering the blanking opening (36) is inserted into the plug-in slot (361). Screening holes (371) are arranged on the screening plate (37).

6. The thermoplastic elastomer particle screening device according to claim 5, wherein: A guide plate (38) is fixedly connected to the screening frame (3) and is inclined on one side of the blanking opening (31).

7. The thermoplastic elastomer particle screening device according to claim 6, wherein: The lengths of the guide plates (38) on several screening frames (3) gradually decrease from top to bottom.

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