A swing type feeding device for plastic particles

Abstract

This invention discloses a plastic granule oscillating feeding device. A connecting shaft assembly is located on one side of the lower end of the feeding mechanism component housing the conveyor belt, and an oscillating rod assembly is located on the inner side. The drive wheel body of the eccentric drive mechanism has an eccentric drive groove, and the center line A of the eccentric drive groove and the center line B of the connecting hole for the motor are eccentrically spaced by a distance L. The bearing connected to the oscillating rod assembly is inserted into the eccentric drive groove. When the eccentric drive mechanism rotates, the synchronously rotating eccentric drive groove drives the feeding mechanism component fixed to the oscillating rod assembly to oscillate horizontally in a fan-shaped reciprocating motion. This causes the plastic granules conveyed by the conveyor belt to be oscillated and fed into the feeding hopper of the equipment. This invention utilizes the cyclical and reciprocating oscillating working state of the plastic granule feeding device to ensure that the fed plastic granules are evenly distributed in the feeding hopper, solving the problems of uneven thickness and uneven solidification time of PVC sheets caused by uneven feeding of plastic granules.

Description

Technical Field

[0001] This invention relates to the technical field of PVC sheet manufacturing equipment, and in particular to a plastic granule oscillating feeding device. Background Technology

[0002] PVC sheet production utilizes a complete production line setup with interconnected equipment of different functions. During production, the first functional unit feeds the raw plastic granules into the feeding hopper of the interconnected second functional unit via a feeding device. Currently, the conventional feeding equipment for plastic granules has a relatively simple fixed outlet structure, which inevitably leads to certain drawbacks:

[0003] 1. After the plastic granules enter the feeding hopper at a fixed position, the plastic granules fed from top to bottom will accumulate at the positions corresponding to the outlet of the feeding device and gradually pile up. Under the action of gravity, the plastic granules gradually and passively diffuse outward in a limited manner, resulting in uneven density and quantity of plastic granules entering the melting chamber.

[0004] Second, due to the uneven density and quantity of plastic granules entering the melting chamber, quality risks such as uneven thickness and varying solidification time of PVC sheets are simultaneously generated.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Summary of the Invention

[0006] To address the problems in related technologies, this invention proposes a plastic granule oscillating feeding device to overcome the aforementioned technical issues in existing technologies. A connecting shaft assembly is provided on one side of the lower end of the feeding mechanism component with an internally installed self-driving conveyor belt, and an oscillating rod assembly is provided on the inner side of the lower end. The connecting shaft assembly is connected to a positioning and fixing sleeve on the plastic production machine, serving as the central fulcrum for the oscillation of the feeding mechanism component. The drive wheel body of the eccentric drive mechanism has an eccentric drive groove, and the center line A of the eccentric drive groove and the center line B of the connecting hole for the motor are eccentrically spaced by a distance L. The oscillating rod assembly... The bearings connected to the components are inserted into the eccentric drive groove. When the eccentric drive mechanism rotates, the synchronously rotating eccentric drive groove drives the feeding mechanism component, which is fixed to the swing rod assembly, to swing back and forth in a horizontal fan shape. This causes the plastic granules conveyed on the conveyor belt to be swung back and forth and fed into the feed bin of the equipment. This invention utilizes the cyclical and reciprocating swinging working state of the plastic granule feeding device to ensure that the fed plastic granules are evenly distributed in the feed bin, solving the problem of uneven accumulation of plastic granules and eliminating the problems of uneven thickness and uneven solidification time of PVC sheets.

[0007] To resolve the aforementioned technical problems and issues in implementation and application, the technical solution of this invention is implemented as follows:

[0008] A plastic granule oscillating feeding device includes a feeding device body, the feeding device body includes a feeding mechanism assembly, and a connecting shaft assembly is provided on one side of the lower end of the feeding mechanism assembly, the connecting shaft assembly extending vertically downward.

[0009] The lower end of the feeding mechanism assembly is provided with a swing rod assembly, which is located inside the connecting shaft assembly;

[0010] The connecting shaft assembly is connected to the positioning and fixing sleeve;

[0011] The lower end of the drive wheel body of the eccentric drive mechanism is provided with a bushing, the bushing is provided with a connecting hole, the upper end of the connecting hole is provided with a through hole, and the upper end of the through hole is provided with a countersunk hole;

[0012] The drive wheel body is provided with an eccentric drive groove, which is an inner groove, and the center line A of the eccentric drive groove and the center line B of the connecting hole are provided with an eccentric distance L.

[0013] The bearing of the swing arm assembly is inserted into the eccentric drive groove.

[0014] Further, the connecting shaft assembly is provided with a connecting shaft four fixed at the top to the feeding body, and bearing four is connected to the upper and lower sides of the connecting shaft four, with an axially limiting bushing four between the two bearing four.

[0015] Further, the positioning and fixing sleeve is provided with a bearing hole, and the bearing hole is fixedly connected to the bearing.

[0016] In a further configuration, the top of the swing rod shaft of the swing rod assembly is fixed to the lower end face of the feeding body, the swing rod shaft is fitted with bushing five, the lower end of bushing five is fitted with bearing five, the lower end of bearing five is fitted with bushing two, and the lower end of bushing two is fitted with another bearing five.

[0017] In a further configuration, the feeding body of the feeding mechanism assembly is provided with a U-shaped feeding cavity, a drive wheel is provided on one side of the feeding cavity, a shaft is provided inside the drive wheel, bearings are provided at both ends of the shaft and connected to the two side walls of the feeding cavity of the material body, and one end of the shaft is connected to a drive motor, which drives the drive wheel to rotate synchronously when the drive motor rotates.

[0018] A driven wheel is provided on the other side of the feeding chamber. The driven wheel has a shaft inside, and bearings are provided at both ends of the shaft to connect with the two side walls of the feeding chamber of the material body.

[0019] The conveyor belt is installed in a loop inside the feeding chamber. The inner surfaces of both ends of the conveyor belt are respectively connected to the outer circumferential surfaces of the drive wheel and the driven wheel, so that when the drive wheel rotates, it synchronously drives the conveyor belt to move axially, supporting the synchronous rotation of the driven wheel at the other end of the conveyor belt.

[0020] The upper end of the side wall of the feeding chamber of the feeding body is covered with a covering strip, and the inner side of the covering strip covers the conveyor belt, covering the gap between the side of the conveyor belt and the inner side wall of the feeding chamber.

[0021] In a further configuration, another structural configuration of the eccentric drive mechanism includes a push rod motor. The telescopic push rod head of the push rod motor is provided with a connector 1. The connector 1 is provided with a connecting hole 2. The connecting hole 240 perpendicularly penetrates the connector hole 3.

[0022] The tail end of the push rod motor is provided with a motor connecting bracket, and the motor connecting bracket is provided with a vertical through hole.

[0023] This invention provides a plastic granule oscillating feeding device, which has the following advantages:

[0024] 1. The plastic granule feeding device can circulate and reciprocate in a swinging manner when feeding plastic granules, so that the fed plastic granules are evenly distributed in the feed hopper.

[0025] Second, it eliminates the problem of plastic granules piling up and failing to distribute evenly after being fed into the feeding hopper;

[0026] Third, it solves the problem of uneven plastic particle quantity when fed into the melting chamber due to the inability of plastic particles to be evenly distributed in a planar shape, resulting in uneven thickness and solidification time of PVC sheets.

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Instruction manual illustrations

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 yes Figure 1 Top view of the eccentric drive wheel;

[0031] Figure 3 yes Figure 2 Rear view;

[0032] Figure 4 for Figure 1 Cross-sectional view of the feed mechanism component along the d-axis;

[0033] Figure 5 This is a schematic diagram of another structure of the eccentric drive mechanism of the present invention.

[0034] In the figure: feeding device body 100, eccentric drive mechanism 200, eccentric drive groove 201, drive wheel body 202, bushing 203, connecting hole 204, countersunk hole 205, through hole 206, push rod motor 210, telescopic push rod 220, joint hole three 230, connecting hole one 240, motor connecting bracket 250, positioning and fixing sleeve 300, bearing hole 301, connecting shaft assembly 400, connecting shaft four 401, bushing four 402, bearing four 403, swing rod assembly 500, swing rod shaft 501, bushing five 502, bearing five 503, bushing two 504, feeding mechanism assembly 600, feeding body 601, drive wheel 602, conveyor belt 603, cover strip 604, driven wheel 605, drive motor 606, feeding chamber 607. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0036] The present invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0037] Example 1:

[0038] like Figure 1 As shown in the figure, a plastic granule oscillating feeding device according to an embodiment of the present invention includes a feeding mechanism assembly 600 in the feeding device body 100, and a connecting shaft assembly 400 is provided on one side of the lower end of the feeding mechanism assembly 600, the connecting shaft assembly 400 extending vertically downward.

[0039] The top of the connecting shaft assembly 400 connecting shaft 401 is fixed to the lower end face of the feeding body 601. The upper and lower sides of the connecting shaft 401 are each connected to bearing 403. An axially limiting bushing 402 is provided between the two bearings 403 to fix the positions of the two bearings 403 and the connection position with the connecting shaft 401 is also axially fixed. A washer and screw can be provided at the bottom of the connecting shaft 401 to prevent the lower bearing 403 from falling off downwards during long-term use.

[0040] The connecting shaft assembly 400 is connected to the positioning and fixing sleeve 300. After connection, the bearing 403 of the connecting shaft assembly 400 is connected to the bearing hole 301 of the positioning and fixing sleeve 300 and axially fixed. The positioning and fixing sleeve 300 is fixed at the corresponding position at the feeding inlet end of the whole machine. After connection, the connecting shaft assembly 400 of the feeding mechanism assembly 600 can swing in a fan shape with the bearing hole 301 of the positioning and fixing sleeve 300 as the center.

[0041] The lower end of the feeding mechanism assembly 600 is provided with a swing rod assembly 500. The swing rod assembly 500 is located inside the connecting shaft assembly 400. The top of the swing rod shaft 501, which is fixed to the lower end face of the feeding body 601, is fitted with a bushing 502. The lower end of the bushing 502 is fitted with a bearing 503. The lower end of the bearing 503 is fitted with a bushing 2 504. The lower end of the bushing 2 504 is fitted with another bearing 503. This structure can fix the distance between the two bearings 503 and the axial position of the bearings 503 and the swing rod shaft 501 in the axial position. The bottom of the swing rod shaft 501 can be provided with a washer and screws to prevent the lower bearing 403 from falling off downwards during long-term use.

[0042] like Figure 2 , Figure 3 As shown, the lower end of the drive wheel body 202 of the eccentric drive mechanism 200 is provided with a bushing 203, the bushing 203 is provided with a connecting hole 204, the upper end of the connecting hole 204 is provided with a through hole 206, the upper end of the through hole 206 is provided with a countersunk hole 205, the drive wheel body 202 is provided with an eccentric drive groove 201, the eccentric drive groove 201 is an inner groove, and the center line A of the eccentric drive groove 201 and the center line B of the connecting hole 204 are provided with an eccentric distance L;

[0043] After the main body 100 of the feeding device is assembled, the bearing 503 of the swing rod assembly 500 is inserted into the eccentric drive groove 201. The connecting hole 204 of the eccentric drive mechanism 200 is connected to the output shaft of the geared motor or the reducer connected to the motor. When the geared motor or reducer synchronously drives the eccentric drive mechanism 200 to rotate, it rotates synchronously with the eccentric drive groove 201, which has an eccentricity in the connecting hole 204. When the eccentric drive mechanism 201 rotates, it synchronously drives the inserted swing rod assembly 500 to swing horizontally back and forth. The swing amplitude is... According to the eccentricity L of the eccentric drive mechanism 201 and the connecting hole 204, and the swing amplitude can be adjusted synchronously according to the value setting of the eccentricity L, as the swing rod assembly 500 swings horizontally back and forth, the feeding mechanism assembly 600 simultaneously realizes the function of one end swinging horizontally back and forth with the connecting shaft assembly 400 as the central axis, and the other end swinging horizontally back and forth. This achieves that the plastic particles sent from the swing output port of the feeding mechanism assembly 600 swing downwards in a horizontal back and forth manner, so that the plastic particles collected in the corresponding position of the lower feed bin will not accumulate and can be evenly distributed in a planar shape.

[0044] In the technical solution of this invention, the feeding mechanism assembly 600 is conveyed by a conveyor belt, such as... Figure 4The feeding body 601 shown has a U-shaped feeding cavity 607. A drive wheel 602, capable of rolling, is located on one side of the feeding cavity 607 and is connected to a drive motor 606 to drive the drive wheel 602 to roll. A driven wheel 605, capable of rolling freely, is located on the other side of the feeding cavity 607. A conveyor belt 603 is installed in a loop within the feeding cavity 607. The inner surfaces of both ends of the conveyor belt 603 are respectively fitted to the outer circumferential surfaces of the drive wheel 602 and the driven wheel 605, so that when the drive wheel 602 rotates, it synchronously drives the conveyor belt 603 to move axially, supporting the driven wheel 605 at the other end of the conveyor belt 603 to rotate synchronously, forming a belt conveyor chain. When the drive motor 606 is working, it drives the drive wheel 602 to rotate synchronously, and the rotating drive wheel 602 synchronously drives the conveyor belt 603 to move, forming a transmission chain moving from the inside to the outside. During feeding, plastic granules are fed into the upper inner surface of the moving conveyor belt 603 and move at a uniform speed along...

[0045] The upper end of the side wall of the feeding chamber 607 of the feeding body 601 is covered with a covering strip 604. The inner side of the covering strip 604 covers the conveyor belt 603 and covers the gap between the side of the conveyor belt 603 and the inner side wall of the feeding chamber 607.

[0046] Example 2:

[0047] like Figure 5 As shown: Another structure of the eccentric drive mechanism 200 is configured to include, but is not limited to, a push rod motor 210. The head of the telescopic push rod 220 of the push rod motor 210 is provided with a connector hole 230. A connecting hole 240 is provided inside the connector hole 230. The connecting hole 240 penetrates the connector hole 230 vertically.

[0048] The push rod motor 210 is controlled by the PLC in the main equipment control box. The PLC inputs preset running instructions, which cause the push rod motor 210 or the push rod motor to perform reciprocating work of extending and retracting according to the set rhythm of the running instructions output by the PLC.

[0049] The tail of the push rod motor 210 is provided with a motor connecting bracket 250. The motor connecting bracket 250 has a vertical through hole. During installation, the axial screw is inserted into the through hole of the motor connecting bracket 250 to fix the tail of the push rod motor 210 to the equipment platform. After fixing, the push rod motor 210 can swing in an arc shape with the axial screw as the fixing post. This is conducive to adaptively adjusting the position change of the part where the head of the telescopic push rod 220 is connected to the lower end of the feeding body 601 during the cyclic swing.

[0050] When the push rod motor 210 is connected to the lower end of the feeding body 601, the head of the telescopic push rod 220 is provided with a connector hole 230, and a connecting hole 240 is provided inside the connector hole 230. The connecting hole 240 vertically penetrates the connector hole 230. The bearing 503 installed on the swing rod assembly 500 is installed and connected to the connector hole 230. When the push rod motor 210 is working, the controlled telescopic push rod 220 runs cyclically according to the set rhythm. The cyclically running telescopic push rod 220 synchronously drives the swing rod assembly 500 fixed to the feeding mechanism assembly 600 to swing synchronously, so as to realize that the plastic particles from the conveyor belt 603 to the output port are evenly and evenly distributed and fall into the feed hopper at the lower end.

[0051] The push rod motor 210 in the technical solution can be upgraded to a servo motor or a stepper motor, and the lead screw connected to the servo motor is connected to the feeding mechanism assembly 600. The servo motor is connected to the PLC control system of the PVC production feeding equipment, and can more conveniently adjust the feeding frequency, feeding speed and the size of the fan-shaped amplitude when the plastic granules are oscillating when the feeding mechanism assembly 600 is fed out by the preset program settings.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plastic granule oscillating feeding device, comprising a feeding device body (100), characterized in that: The feeding device body (100) includes a feeding mechanism assembly (600), and a connecting shaft assembly (400) is provided on one side of the lower end of the feeding mechanism assembly (600), and the connecting shaft assembly (400) extends vertically downward. The lower end of the feeding mechanism assembly (600) is provided with a swing rod assembly (500), which is located inside the connecting shaft assembly (400); The connecting shaft assembly (400) is connected to the positioning and fixing sleeve (300); The drive wheel body (202) of the eccentric drive mechanism (200) is provided with a bushing (203) at the lower end. The bushing (203) is provided with a connecting hole (204). The upper end of the connecting hole (204) is provided with a through hole (206). The upper end of the through hole (206) is provided with a countersunk hole (205). The drive wheel body (202) is provided with an eccentric drive groove (201), the eccentric drive groove (201) is an inner groove, and the center line A of the eccentric drive groove (201) and the center line B of the connecting hole (204) are provided with an eccentric distance L; The bearing five (503) of the swing arm assembly (500) is inserted into the eccentric drive groove (201); The connecting shaft assembly (400) is provided with a connecting shaft four (401) whose top is fixed to the feeding body (601). The upper and lower sides of the connecting shaft four (401) are each connected to a bearing four (403). An axially limiting bushing four (402) is provided between the two bearing four (403). The positioning and fixing sleeve (300) is provided with a bearing hole (301), and the bearing hole (301) is fixedly connected to the bearing four (403); The top of the swing rod shaft (501) of the swing rod assembly (500) is fixed to the lower end face of the feeding body (601). The swing rod shaft (501) is fitted with bushing five (502). Bearing five (503) is installed at the lower end of bushing five (502). Bushing two (504) is fitted at the lower end of bearing five (503). Another bearing five (503) is installed at the lower end of bushing two (504).

2. The plastic granule oscillating feeding device as described in claim 1, characterized in that: The feeding mechanism assembly (600) has a U-shaped feeding cavity (607) inside the feeding body (601). A drive wheel (602) is provided on one side of the feeding cavity (607). The drive wheel (602) has a shaft inside. Bearings are provided at both ends of the shaft and connected to the two side walls of the feeding cavity (607) of the feeding body (601). One end of the shaft is connected to a drive motor (606). When the drive motor (606) rotates, it synchronously drives the drive wheel (602) to rotate. A driven wheel (605) is provided on the other side of the feeding chamber (607). The driven wheel (605) is provided with a shaft, and bearings are provided at both ends of the shaft to connect with the two side walls of the feeding chamber (607) of the material body (601). The conveyor belt (603) is installed in the feeding chamber (607) in a circular manner. The inner surfaces of both ends of the conveyor belt (603) are respectively attached to the outer circumferential surfaces of the drive wheel (602) and the driven wheel (605), so that when the drive wheel (602) rotates, it drives the conveyor belt (603) to move axially, and supports the driven wheel (605) at the other end of the conveyor belt (603) to rotate synchronously.

3. The plastic granule oscillating feeding device as described in claim 1, characterized in that: The upper end of the side wall of the feeding chamber (607) of the feeding body (601) is covered with a covering strip (604). The inner side of the covering strip (604) covers the conveyor belt (603) and covers the gap between the side of the conveyor belt (603) and the inner side wall of the feeding chamber (607).

4. The plastic granule oscillating feeding device as described in claim 1, characterized in that: Another structural configuration of the eccentric drive mechanism (200) includes a push rod motor (210), the head of the telescopic push rod (220) of the push rod motor (210) is provided with a connector hole three (230), the connector hole three (230) is provided with a connecting hole one (240) inside the connector hole three (230), and the connecting hole one (240) vertically penetrates the connector hole three (230); The tail of the push rod motor (210) is provided with a motor connecting bracket (250), and the motor connecting bracket (250) is provided with a vertical through hole.

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