Thermoplastic polyurethane colloidal particle screening device

Abstract

The utility model discloses a thermoplastic polyurethane colloidal particle screening device, which relates to the technical field of thermoplastic polyurethane colloidal particle screening, and comprises a support, a sliding rod is fixed at the top of the support, a sliding plate is slidably connected to the outer side of the sliding rod, a spring is sleeved on the outer side of the sliding rod, a screening hopper is fixed on the inner side of the sliding plate, and the screening hopper is fixed on the top of the support. A discharging opening is formed in the bottom of the screen hopper in a penetrating mode, a vibration motor is fixed to the edge of the bottom of the screen hopper, a connecting mechanism is arranged on one side of the screen hopper, a screen mesh is connected to the interior of the screen hopper through the connecting mechanism, a blocking frame is fixed to the top of the screen mesh, and an ejection mechanism is arranged in the screen hopper. According to the thermoplastic polyurethane colloidal particle screening device, through starting of the double-shaft motor, the connecting plate drives the ejection plate to move in a reciprocating mode, particles clamped on the screen are ejected out through reciprocating movement of the ejection plate, and therefore the situation that the screen is blocked by the particles is avoided, passing of the particles is prevented from being affected, and the screening efficiency is prevented from being affected.

Description

Technical Field

[0001] This utility model relates to the field of thermoplastic polyurethane particle screening technology, specifically a thermoplastic polyurethane particle screening device. Background Technology

[0002] TPU stands for thermoplastic polyurethane elastomer rubber. TPU is a polymer material formed by the reaction and polymerization of diisocyanate molecules such as diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) with macromolecular polyols and low molecular weight polyols (chain extenders). TPU is widely used in medical and health, electronics, industry and sports. After production, thermoplastic polyurethane granules need to be screened to select standard granules and remove unqualified granules. Screening machines are required for this screening process.

[0003] Current screening machines often cause thermoplastic polyurethane particles to get stuck in the mesh when the particle size is similar to the mesh size, leading to mesh blockage. Over time, this blockage can worsen, affecting particle throughput and reducing screening efficiency. To address this, we propose a thermoplastic polyurethane particle screening device. Utility Model Content

[0004] The purpose of this invention is to provide a thermoplastic polyurethane particle screening device to solve the problem in the prior art where, when the size of the thermoplastic polyurethane particles is similar to the mesh size, the particles get stuck in the mesh, causing mesh blockage and reducing screening efficiency after a long period of screening.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thermoplastic polyurethane granule screening device, comprising a support, a sliding rod fixed to the top of the support, a sliding plate slidably connected to the outer side of the sliding rod, a spring sleeved on the outer side of the sliding rod, a sieve bucket fixed to the inner side of the sliding plate, a discharge port extending through the bottom of the sieve bucket, a vibration motor fixed to the bottom edge of the sieve bucket, a connecting mechanism provided on one side of the sieve bucket, a screen connected to the inside of the sieve bucket through the connecting mechanism, a baffle frame fixed to the top of the screen, and an ejection mechanism provided inside the sieve bucket.

[0006] Preferably, the ejection mechanism includes a movable groove extending through the bottom of both sides of the screen hopper, a movable plate fixed inside the movable groove, a connecting plate fixed at the top center of the movable plate, ejection plates evenly fixed at the top of the connecting plate, connecting strips fixed on both sides of the connecting plate, a through groove extending through the bottom of one side of the connecting strip, a dual-shaft motor fixed at the bottom center of the screen hopper, a turntable fixed at the end of the output shaft of the dual-shaft motor, and an extrusion column fixed on one side of the turntable.

[0007] Preferably, the top of the ejector plate is attached to the bottom of the screen, which facilitates the ejector plate to eject the particles stuck on the screen, and the extrusion column is located inside the through groove.

[0008] Preferably, the outer wall of the extrusion column fits into the inner wall of the through groove, and the length of the through groove is greater than the diameter of the turntable to avoid motion interference when the extrusion column extrudes the through groove.

[0009] Preferably, a limit plate is fixed to the top of the slide rod to prevent the slide from falling off, and the upper and lower ends of the spring are fixedly connected to the bottom of the slide and the top of the bracket, respectively, so that the spring can drive the slide to move up and down when the vibration motor vibrates.

[0010] Preferably, the connecting mechanism includes a placement frame fixed to the inner wall of the sieve hopper, positioning rods fixed at the top four corners of the placement frame, positioning holes through the top four corners of the sieve mesh, insertion holes through the two sides of the sieve mesh, mounting plates symmetrically fixed to one side of the sieve hopper, a screw hole through the side of one mounting plate, a bidirectional screw rod rotating through the opposite sides of the two mounting plates, a knob fixed to one end of the bidirectional screw rod, a screw through the side of the knob, limit rods symmetrically fixed between the opposite sides of the two mounting plates, L-shaped rods symmetrically screwed to the outer wall of the bidirectional screw rod, a fixing plate fixed to one end of the L-shaped rod, and an insertion rod fixed to one side of the fixing plate.

[0011] Preferably, the L-shaped rod slides on the outer wall of the limiting rod to limit the L-shaped rod, and the screw is screwed into the inside of the screw hole to facilitate the fixing of the knob.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this application, the ejector mechanism is used to drive the turntable to rotate by starting the dual-shaft motor, thereby causing the extrusion column to extrude the through groove, which in turn drives the connecting bar to move back and forth, causing the connecting plate to drive the ejector plate to move back and forth. Through the reciprocating movement of the ejector plate, the particles stuck on the screen are ejected, thereby preventing the particles from clogging the screen and affecting the passage of particles, thus avoiding affecting the screening efficiency.

[0014] 2. In this application, by setting up a connecting mechanism, rotating the knob drives the bidirectional screw to rotate. Using the limitation of the limiting rod, the L-shaped rod drives the fixing plate to move away from each other, causing the insert rod to move out of the insertion hole, releasing the fixation of the screen. Then, the screen can be pulled out for replacement. A screen with another aperture is installed, so that the positioning rod is in the positioning hole. Reversing the knob makes the insert rod embedded in the insertion hole, completing the installation. This facilitates the replacement of screens with different mesh diameters as required, avoids the need to replace different screening machines, saves costs, and improves the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the ejection mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the extrusion column installation structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection mechanism structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the insertion rod installation structure of this utility model.

[0020] The following numbers are labeled in the diagram: 100, bracket; 200, slide bar; 300, slide plate; 400, spring; 500, sieve bucket; 510, discharge port; 520, vibrating motor; 600, screen; 610, baffle frame; 700, ejection mechanism; 710, moving groove; 720, moving plate; 730, connecting plate; 740, ejection plate; 750, connecting strip; 751, through groove; 760, dual-axis motor; 770, turntable; 780, extrusion column; 800, connecting mechanism; 810, placement frame; 820, positioning rod; 830, positioning hole; 840, insertion hole; 850, mounting plate; 851, screw hole; 860, screw; 861, knob; 862, screw; 870, limit rod; 880, L-shaped rod; 890, fixing plate; 891, insertion rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Figures 1-5As shown, this utility model provides a technical solution for a thermoplastic polyurethane granule screening device, including a support 100, a slide rod 200 fixed to the top of the support 100, a slide plate 300 slidably connected to the outside of the slide rod 200, a spring 400 sleeved on the outside of the slide rod 200, a sieve 500 fixed to the inside of the slide plate 300, a discharge port 510 through the bottom of the sieve 500, a vibration motor 520 fixed to the bottom edge of the sieve 500, a connecting mechanism 800 provided on one side of the sieve 500, a screen 600 connected to the inside of the sieve 500 through the connecting mechanism 800, a baffle frame 610 fixed to the top of the screen 600, and an ejection mechanism 700 provided inside the sieve 500; a limit plate is fixed to the top of the slide rod 200, and the upper and lower ends of the spring 400 are fixedly connected to the bottom of the slide plate 300 and the top of the support 100, respectively.

[0023] Please refer to it again. Figure 2 and Figure 3 The ejection mechanism 700 includes a movable groove 710 extending through the bottom of both sides of the screen hopper 500. A movable plate 720 is fixedly fixed inside the movable groove 710 and slides within it. A connecting plate 730 is fixed to the top center of the movable plate 720. Ejection plates 740 are evenly fixed to the top of the connecting plate 730. Connecting strips 750 are fixed to both sides of the connecting plate 730. A through groove 751 is provided through the bottom of one side of each connecting strip 750. A dual-shaft motor 760 is fixed to the bottom center of the screen hopper 500. A turntable 770 is fixed to the end of the output shaft of the dual-shaft motor 760. A pressing column 780 is fixed to one side of the turntable 770. The top of the ejection plate 740 is connected to the bottom of the screen 600. The extrusion column 780 is located inside the through groove 751; the outer wall of the extrusion column 780 is in contact with the inner wall of the through groove 751, and the length of the through groove 751 is greater than the diameter of the turntable 770; by using the ejection mechanism 700, the turntable 770 is driven to rotate by the start of the dual-shaft motor 760, thereby causing the extrusion column 780 to extrude the through groove 751, thereby causing the connecting strip 750 to move back and forth, causing the connecting plate 730 to drive the ejection plate 740 to move back and forth, and by the back and forth movement of the ejection plate 740, the particles stuck on the screen 600 are ejected, thereby preventing the particles from clogging the screen 600, preventing the particles from passing through, and preventing the screening efficiency from being affected.

[0024] Please refer to it again. Figure 4 and Figure 5The connecting mechanism 800 includes a placement frame 810 fixed to the inner wall of the sieve hopper 500. Positioning rods 820 are fixed at the four top corners of the placement frame 810. Positioning holes 830 are provided through the four top corners of the sieve 600. Insertion holes 840 are provided through the sides of the sieve 600. Mounting plates 850 are symmetrically fixed to one side of the sieve hopper 500. A screw hole 851 is provided through one side of each mounting plate 850. A bidirectional screw 860 rotates between the opposite sides of the two mounting plates 850. A knob 861 is fixed to one end of the bidirectional screw 860. A screw 862 is connected through one side of the knob 861. Limiting rods 870 are symmetrically fixed between the opposite sides of the two mounting plates 850. L-shaped rods 880 are symmetrically screwed to the outer wall of the bidirectional screw 860. A fixing plate 890 is fixed to one end of each L-shaped rod 880. A rod 891 is fixed to one side of the fixed plate 890; an L-shaped rod 880 slides on the outer wall of the limiting rod 870, and a screw 862 is screwed into the screw hole 851; through the setting of the connecting mechanism 800, rotating the knob 861 drives the bidirectional screw 860 to rotate, and using the limitation of the limiting rod 870, the L-shaped rod 880 drives the fixed plate 890 to move away from each other, so that the rod 891 moves out of the insertion hole 840, releasing the fixation of the screen 600. Then the screen 600 can be pulled out for replacement, and a screen 600 with another aperture can be installed, so that the positioning rod 820 is located in the positioning hole 830. Reverse the knob 861, so that the rod 891 is embedded in the insertion hole 840, completing the installation. This makes it easy to replace the screen 600 with different mesh diameters as required, avoiding the need to replace different screening machines, saving costs, and improving the practicality of the device.

[0025] In use, this invention works as follows: During screening, the vibration motor 520 and the dual-shaft motor 760 are activated. The activation of the vibration motor 520, in conjunction with the spring 400, causes the sieve bucket 500 to vibrate, which in turn vibrates the screen 600. Thermoplastic polyurethane granules are poured into the screen 600 for screening. Defective products slide off the top of the screen 600, while qualified products fall to the bottom and are discharged from the outlet 510. When the thermoplastic polyurethane granules jam the mesh of the screen 600, the activation of the dual-shaft motor 760 drives the turntable 770 to rotate. This causes the extrusion column 780 to press against the through groove 751, which in turn causes the connecting strip 750 to reciprocate. This, in turn, causes the moving plate 720 to drive the connecting plate 730 to reciprocate, which in turn causes the connecting plate 730 to drive the ejector plate 740. The reciprocating movement of the ejector plate 740 pushes out particles stuck on the screen 600, preventing the screen 600's mesh from getting stuck. When different particle sizes need to be screened, the knob 861 is turned, driving the bidirectional screw 860 to rotate. The limiting rod 870 restricts the L-shaped rod 880, causing the fixing plate 890 to move away from each other, so that the insertion rod 891 moves out of the insertion hole 840, releasing the fixation of the screen 600. Then, the screen 600 is pulled out for replacement. A screen 600 with a different mesh diameter is installed, so that the positioning rod 820 is located in the positioning hole 830. The knob 861 is reversed, so that the insertion rod 891 is embedded in the insertion hole 840, completing the installation. Then, the screw 862 is screwed into the screw hole 851 to replace the screen 600 with a different mesh diameter, making it easy to change according to the screening requirements.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A thermoplastic polyurethane granule screening device, characterized in that: The device includes a support (100), a slide rod (200) fixed to the top of the support (100), a slide plate (300) slidably connected to the outside of the slide rod (200), a spring (400) sleeved on the outside of the slide rod (200), a sieve hopper (500) fixed to the inside of the slide plate (300), a discharge port (510) penetrating through the bottom of the sieve hopper (500), a vibration motor (520) fixed to the bottom edge of the sieve hopper (500), a connecting mechanism (800) provided on one side of the sieve hopper (500), a screen (600) connected to the inside of the sieve hopper (500) through the connecting mechanism (800), a baffle frame (610) fixed to the top of the screen (600), and an ejection mechanism (700) provided inside the sieve hopper (500).

2. The thermoplastic polyurethane particle screening device according to claim 1, characterized in that: The ejection mechanism (700) includes a movable groove (710) extending through the bottom of both sides of the screen hopper (500). A movable plate (720) is fixed inside the movable groove (710). A connecting plate (730) is fixed at the top center of the movable plate (720). An ejection plate (740) is uniformly fixed at the top of the connecting plate (730). Connecting strips (750) are fixed on both sides of the connecting plate (730). A through groove (751) is provided through the bottom of one side of the connecting strip (750). A dual-shaft motor (760) is fixed at the bottom center of the screen hopper (500). A turntable (770) is fixed at the end of the output shaft of the dual-shaft motor (760). An extrusion column (780) is fixed on one side of the turntable (770).

3. The thermoplastic polyurethane particle screening device according to claim 2, characterized in that: The top of the ejector plate (740) is attached to the bottom of the screen (600), and the extrusion column (780) is located inside the through groove (751).

4. The thermoplastic polyurethane particle screening device according to claim 3, characterized in that: The outer wall of the extrusion column (780) is in contact with the inner wall of the through groove (751), and the length of the through groove (751) is greater than the diameter of the turntable (770).

5. The thermoplastic polyurethane particle screening device according to claim 1, characterized in that: A limiting plate is fixed to the top of the slide bar (200), and the upper and lower ends of the spring (400) are fixedly connected to the bottom of the slide plate (300) and the top of the bracket (100), respectively.

6. The thermoplastic polyurethane particle screening device according to claim 1, characterized in that: The connecting mechanism (800) includes a placement frame (810) fixed to the inner wall of the sieve hopper (500). Positioning rods (820) are fixed at the four top corners of the placement frame (810). Positioning holes (830) are provided through the four top corners of the sieve mesh (600). Insertion holes (840) are provided through the sides of the sieve mesh (600). Mounting plates (850) are symmetrically fixed to one side of the sieve hopper (500). A screw hole (851) is provided through one side of each mounting plate (850). A bidirectional screw (860) is rotatably driven between opposite sides of the plate (850). A knob (861) is fixed to one end of the bidirectional screw (860). A screw (862) is connected through one side of the knob (861). Limiting rods (870) are symmetrically fixed between opposite sides of the two mounting plates (850). L-shaped rods (880) are symmetrically screwed to the outer wall of the bidirectional screw (860). A fixing plate (890) is fixed to one end of the L-shaped rod (880). A plug rod (891) is fixed to one side of the fixing plate (890).

7. The thermoplastic polyurethane particle screening device according to claim 6, characterized in that: The L-shaped rod (880) slides on the outer wall of the limiting rod (870), and the screw (862) is screwed into the inside of the screw hole (851).

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