A plastic bottle cap orientation screening device

Abstract

The present invention discloses a device for screening the orientation of plastic bottle caps, comprising a hopper and a chain conveyor belt, a push-off plate is fixed above the upper part of the chain conveyor belt, a mounting plate is provided on the upper right side of the chain conveyor belt, a longitudinal baffle is provided on the mounting plate, a first screening track is fixed at a position below the longitudinal baffle, a lower end of the first screening track abuts against a second screening track, a height difference is provided between the lower end of the first screening track and the higher end of the second screening track, the lower end of the second screening track is connected to a discharge port, a material guide plate is provided below the first screening track, the upper end of the material guide plate is fixedly connected to the mounting plate, the lower end of the material guide plate is located in the hopper, a partition is fixed on the outer edge of the material guide plate, a material collection trough is fixed on the right side of the partition, a material leakage port is provided on the upper part of the material collection trough, and a material discharge port is provided on the partition. The present invention has a simple structure, stable operation, can realize rapid screening of the orientation of plastic bottle caps, and has a high screening accuracy.

Description

Technical Field

[0001] The invention relates to a plastic bottle cap screening device, in particular to a plastic bottle cap orientation screening device. Background Art

[0002] In the modern pharmaceutical industry, the production and bottling of drugs are achieved through highly automated assembly lines, which prevents hygiene problems caused by human intervention and improves production efficiency. Among them, the bottle caps used for bottling need to be sorted according to their orientation when entering the assembly line, so that the bottle caps enter the assembly line in the same direction. How to efficiently and accurately sort and adjust the orientation of the bottle caps has become the key to improving production efficiency.

[0003] For example, a Chinese patent with the authorization announcement number CN205294305U and the authorization announcement date 2016.06.08 discloses a bottle cap orientation sorting device, wherein the bottle cap comprises a circular cap body and an arc-shaped cap top, a screening track, a conveying mechanism and a material trough, wherein the conveying mechanism drives the bottle caps in the material trough to enter the screening track; the screening track has two side plates, the spacing between the two side plates matches the height of the bottle cap, and the bottom of the screening track is provided with a leakage groove matching the height of the circular cap body, so that the bottle cap with the circular cap body facing the leakage groove falls through the leakage groove when passing through the screening track; the screening track is inclined. The sorting device has the following defects: (1) the air ejected by the jet mechanism generates a lateral thrust, causing the bottle cap to roll into the screening track, which requires the connection of an air source, which is not only complex in structure but also high in cost; (2) the circular cap body will pass through the leakage groove when rolling along the screening track at a high speed or when kicked, causing misscreening and reducing the screening accuracy. Summary of the invention

[0004] The present invention aims to solve the above-mentioned technical problems existing in the bottle cap orientation sorting device of the prior art, and provides a plastic bottle cap orientation screening device which has a simple structure, stable operation, can realize rapid screening of the orientation of plastic bottle caps, and has a high screening accuracy.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a plastic bottle cap screening device, comprising a hopper and a chain plate conveyor belt, the chain plate conveyor belt is provided with cross plates at intervals, the lower end of the chain plate conveyor belt is located in the hopper to lift the bottle caps in the hopper upward, an inclined push-off plate is fixed above the upper part of the chain plate conveyor belt, the distance between the push-off plate and the chain plate conveyor belt is less than the thickness of the bottle caps, a mounting plate is provided on the right side of the upper part of the chain plate conveyor belt, a longitudinal baffle is provided on the mounting plate near the higher end of the push-off plate, and a first screening rail is fixed on the mounting plate at a position below the longitudinal baffle The first screening track is arranged inclined, and the lower end of the first screening track abuts against the second screening track. The first screening track and the second screening track have the same inclination angle, and there is a height difference between the lower end of the first screening track and the higher end of the second screening track. The lower end of the second screening track is connected to the discharge port. A material guide plate is provided under the first screening track, the upper end of the material guide plate is fixedly connected to the mounting plate, the lower end of the material guide plate is located in the hopper, a partition is fixed on the outer edge of the material guide plate, a material collecting trough hopper is fixed on the right side of the partition, a material leakage port is provided on the upper part of the material collecting trough hopper, and a material discharge port is provided on the partition. The present invention utilizes the different positions of the center of gravity of the bottle caps to screen and sort the caps, and the screening reliability is high. In the present invention, the bottle caps on the transverse baffle plate can be pushed to the mounting plate area through the blocking energy of the push-off plate, and the bottle caps fall along the mounting plate to the first screening track under the action of gravity, and the longitudinal baffle rod plays a blocking and limiting role to ensure that the bottle caps can fall onto the first screening track; the first screening track is tilted (high on the left and low on the right), and the bottle caps that fall on the first screening track and have their openings facing inwards (towards the mounting plate) cannot be supported by the first screening track because the part located outside the first screening track (suspended) is heavier, so the bottle caps will slide from the first screening track and fall into the hopper along the material guide plate; the bottle caps that fall on the first screening track and have their openings facing outwards will roll along the first screening track to the second screening track, and there is a height difference between the lower end of the first screening track and the higher end of the second screening track, and the height difference can cause the bottle caps to The bottle caps which are not in contact with the mounting plate can be moved along the second screening track to the lower end of the second screening track, and finally fall from the bottle cap outlet to the bottle cap conveying channel connected with the bottle cap outlet. The present invention has a simple structure and good running stability. Through the cooperation among the push-off plate, the longitudinal blocking rod, the first screening track and the second screening track, the bottle caps which have rolled down the second screening track can realize the rapid directional screening of the orientation of the plastic bottle caps, and the screening accuracy is high.

[0006] Preferably, the first screening track is a strip-shaped plate structure, and a material drop guide slope is provided on the outside of the first screening track. The horizontal plane of the top surface of the first screening track forms a bottle cap support surface, and the width of the bottle cap support surface is 1 / 4 to 1 / 3 of the thickness of the bottle cap. The material drop guide slope firstly enables the top surface of the first screening track to form a bottle cap support surface, and secondly plays a guiding role, so that the screened bottle caps can fall onto the guide plate; the bottle cap support surface plays the role of supporting and guiding the bottle caps, so as to realize the screening of bottle caps in different directions.

[0007] Preferably, the second screening track is a strip-shaped plate structure, and the thickness of the second screening track is: 1 / 2 of the thickness of the bottle cap ≤ the thickness of the second screening track ≤ the thickness of the bottle cap.

[0008] Preferably, the chain conveyor belt, the material guide plate and the collecting trough hopper are covered with a transparent panel, and the distance between the first screening track, the second screening track and the transparent panel is greater than the thickness of the bottle cap.

[0009] Preferably, a scraper plate is fixed on the inner surface of the transparent panel, and the distance between the scraper plate and the mounting plate is adapted to the thickness of the bottle caps. The scraper plate plays a role in further screening or adjusting the bottle caps on the second screening track, blocking or adjusting the bottle caps that are not in contact with the mounting plate on the second screening track to make them in contact with the mounting plate, so that the bottle caps can roll along the second screening track against the mounting plate, ensuring that the bottle caps can roll to the lower end of the second screening track, and finally fall from the discharge port into the bottle cap conveying channel, further improving the screening accuracy.

[0010] Preferably, a guide baffle is fixed on the mounting plate below the first screening track, the distance between the guide baffle and the transparent panel is less than the thickness of the bottle cap, the guide baffle is inclined, the lower end of the guide baffle is located above the guide plate, and the horizontal distance between the lower end of the guide baffle and the partition is greater than the diameter of the bottle cap. The distance between the guide baffle and the transparent panel is less than the thickness of the bottle cap, and the lower end of the guide baffle is located above the guide plate, which can prevent the bottle caps falling from the first screening track from rolling onto the chain conveyor belt and colliding with the bottle caps on the cross plate, causing the bottle caps on the cross plate to fall and affect the screening efficiency, and can also prevent the bottle caps falling from the first screening track from being blocked by the guide plate and can only be guided to the partition, so that the bottle caps can fall along the guide plate under the blocking of the partition.

[0011] Preferably, the partition is a U-shaped plate, and the opening of the partition faces the chain conveyor belt. The partition is a U-shaped plate, which is convenient for fixing and connecting.

[0012] Preferably, the material collection hopper includes a bottom plate, which is in a right-angled trapezoid. The lower side of the bottom plate is fixedly connected to the partition plate, and the right-angled waist of the bottom plate is fixedly connected to the mounting plate. A surrounding plate is fixed at the right-angled waist, upper side and oblique waist of the bottom plate. The bottom plate, the surrounding plate and the partition plate together form the material collection hopper, and there is a gap between the surrounding plate and the partition plate at the right-angled waist position of the bottom plate, and the gap forms a leakage port.

[0013] Preferably, a parabolic plate is fixed on the guide plate, and the parabolic plate includes a fixed plate and an arched plate, the fixed plate is fixedly connected to the guide plate, the upper end of the arched plate is fixedly connected to the fixed plate, and the lower end of the arched plate is located in the hopper and in contact with the guide plate. The fixed plate in the parabolic plate plays a role of connecting and fixing with the guide plate; the arched plate can change the falling trajectory of the bottle cap, so that the bottle cap can fall in the hopper at a position farther from the guide plate, avoiding the bottle cap from falling to the bottom of the guide plate (i.e., the dead angle position on the side of the hopper close to the guide plate) and being unfavorable to the conveying of the chain conveyor belt.

[0014] Preferably, an upper baffle is fixed at the position of the mounting plate above the second screening track, the end of the upper baffle close to the first screening track is set as an arc section with a concave surface facing outward, the end of the upper baffle away from the first screening track is set as an arc section with a concave surface facing inward, and the distance between the upper baffle and the second screening track is adapted to the diameter of the bottle cap. The end of the upper baffle away from the first screening track is set as an arc section with a concave surface facing inward, which plays a guiding role and can directly guide the bottle cap to the bottle cap outlet.

[0015] Therefore, the present invention has the following beneficial effects: the present invention has a simple structure and good operating stability, and can realize rapid directional screening of the orientation of plastic bottle caps through the cooperation among the push-off plate, the longitudinal baffle bar, the first screening track and the second screening track, and the screening accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention.

[0017] Figure 2 It is a left view of the first screening track in the present invention.

[0018] Figure 3 It is a left side view of the parabolic plate in the present invention.

[0019] In the figure: hopper 1, chain conveyor belt 2, cross baffle 3, push-off plate 4, mounting plate 5, longitudinal baffle 6, first screening track 7, second screening track 8, bottle cap outlet 9, guide plate 10, partition 11, leakage port 12, discharge port 13, falling guide inclined surface 14, bottle cap supporting surface 15, scraping plate 16, guide baffle 17, bottom plate 18, enclosure plate 19, fixed plate 20, arch plate 21, upper baffle 22. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 A plastic bottle cap orientation screening device shown in the figure comprises a hopper 1 and a chain conveyor belt 2, wherein the hopper is a square hopper, and the chain conveyor belt is provided with cross plates 3 at intervals, and the lower end of the chain conveyor belt is located in the hopper to lift the bottle caps in the hopper upward, and an inclined push-off plate 4 is fixed above the upper part of the chain conveyor belt, and the distance between the push-off plate and the chain conveyor belt is less than the thickness of the bottle caps, and a mounting plate 5 is provided on the upper right side of the chain conveyor belt, and a longitudinal baffle 6 is provided at a position of the mounting plate near the higher end of the push-off plate, and a first screening track 7 is fixed at a position below the longitudinal baffle, and the first screening track is a strip plate structure, and a falling guide inclined surface 14 is provided on the outer side of the first screening track, and the horizontal surface of the top surface of the first screening track forms a bottle cap support surface 15 (such as Figure 2 As shown in the figure, the width of the bottle cap supporting surface is 1 / 3 of the thickness of the bottle cap, the first screening track is inclined, the lower end of the first screening track is against the second screening track 8, the second screening track is a strip plate structure, and the thickness of the second screening track is 1 / 2 of the thickness of the bottle cap, the first screening track and the second screening track have the same inclination angle, and there is a height difference between the lower end of the first screening track and the higher end of the second screening track, the lower end of the second screening track is connected to the bottle cap outlet 9, the mounting plate is located above the second screening track and an upper baffle plate 22 is fixed thereon, the end of the upper baffle plate close to the first screening track is set as an arc section with the concave surface facing outward, the end of the upper baffle plate away from the first screening track is set as an arc section with the concave surface facing inward, the distance between the upper baffle plate and the second screening track is adapted to the diameter of the bottle cap, a guide plate 10 is provided below the first screening track, the upper end of the guide plate is fixedly connected to the mounting plate, the lower end of the guide plate is located in the hopper, a parabolic plate is fixed on the guide plate, and the parabolic plate includes a fixed plate 20 and an arch plate 21 (as shown in the figure Figure 3As shown), the fixed plate is fixedly connected to the guide plate, the upper end of the arched plate is fixedly connected to the fixed plate, the upper end of the arched plate and the fixed plate are of a homogeneous integral structure, the lower end of the arched plate is located in the hopper and contacts the guide plate, a guide baffle 17 is fixed to the mounting plate located below the first screening track, the guide baffle is inclined, the lower end of the guide baffle is located above the guide plate, and the horizontal distance between the lower end of the guide baffle and the partition is greater than the diameter of the bottle cap, a partition 11 is fixed to the right edge of the guide plate, the partition is a U-shaped plate, the opening of the partition faces the chain conveyor belt, a collecting trough hopper is fixed to the outside of the partition, the collecting trough hopper includes a bottom plate 18, the bottom plate is a right-angled trapezoid, the lower side of the bottom plate is fixedly connected to the partition, and the bottom plate The right-angle waist is fixedly connected to the mounting plate, and a surrounding plate 19 is fixed at the right-angle waist, upper side and oblique waist of the bottom plate. The bottom plate, the surrounding plate and the partition plate are combined to form a material collecting trough. There is a gap between the surrounding plate and the partition plate at the right-angle waist position on the bottom plate, and the gap forms a leakage port 12. The partition plate is provided with a discharge port 13. The chain conveyor belt, the guide plate and the material collecting trough hopper are covered with a transparent panel (the transparent panel is not shown in the figure), and a scraper plate 16 is fixed on the inner surface of the transparent panel. The distance between the scraper plate and the mounting plate is adapted to the thickness of the bottle cap, the distance between the first screening track, the second screening track and the transparent panel is greater than the thickness of the bottle cap, and the distance between the guide baffle and the transparent panel is less than the thickness of the bottle cap.

[0022] The operation process of the present invention is as follows: the bottle caps in the hopper are lifted upwards by the chain plate conveyor belt under the action of the transverse baffle plate. Since the distance between the push-off plate and the chain plate conveyor belt is less than the thickness of the bottle caps, when the bottle caps are lifted to the position of the push-off plate, they will be blocked by the push-off plate and thus roll into the mounting plate. Under the action of gravity, the bottle caps fall along the mounting plate to the bottle cap support surface on the first screening track. The first screening track is inclined (high on the left and low on the right). The bottle caps that fall on the bottle cap support surface and whose openings face inwards (towards the mounting plate) cannot be supported by the bottle cap support surface because the part outside the bottle cap support surface (suspended) is heavier, so the bottle caps will slide from the first screening track along the falling guide inclined surface and fall into the hopper along the guide plate. The bottle caps that fall on the bottle cap support surface and whose openings face outwards have their center of gravity on the bottle cap support surface. The bottle caps are placed on the support surface of the bottle caps, and roll along the support surface of the bottle caps to the second screening track. There is a height difference between the lower end of the first screening track and the higher end of the second screening track. The height difference can cause the bottle caps to jump slightly, thereby changing the running track of the bottle caps that are not in contact with the mounting plate on the second screening track, so that they roll outward from the second screening track; the bottle caps that roll down from the second screening track fall from the leakage port into the collecting hopper, and then fall onto the guide plate through the discharge port on the partition, and fall into the hopper along the guide plate under the action of gravity; the bottle caps with the opening facing outward and in contact with the mounting plate can roll along the second screening track to the lower end of the second screening track, and finally fall from the bottle cap outlet to the bottle cap conveying channel connected with the bottle cap outlet, thereby completing the screening process.

[0023] The invention has a simple structure and stable operation, and can realize rapid directional screening of the orientation of plastic bottle caps through the cooperation among the push-off plate, the longitudinal blocking rod, the first screening track and the second screening track, and the screening accuracy is high.

[0024] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A plastic bottle cap orientation screening device, comprising a hopper (1) and a chain conveyor belt (2), wherein the chain conveyor belt is provided with a cross plate (3) at intervals, the lower end of the chain conveyor belt is located in the hopper to lift the bottle caps in the hopper upward, an inclined push-off plate (4) is fixed above the upper part of the chain conveyor belt, the distance between the push-off plate and the chain conveyor belt is less than the thickness of the bottle caps, and the characteristics are as follows: A mounting plate (5) is provided on the upper right side of the chain conveyor belt, a longitudinal stop bar (6) is provided on the mounting plate at a position close to the higher end of the push-off plate, a first screening track (7) is fixed on the mounting plate at a position below the longitudinal stop bar, the first screening track is inclined, a lower end of the first screening track abuts against a second screening track (8), the first screening track and the second screening track have the same inclination angle, and a height difference is provided between the lower end of the first screening track and the higher end of the second screening track, the lower end of the second screening track is connected to the bottle cap outlet (9), the second screening track is a strip plate structure, and the thickness of the second screening track is: 1 / 2 of the thickness of the bottle cap ≤ the thickness of the second screening track ≤ the thickness of the bottle cap, the chain conveyor belt, the guide plate and the collecting trough are covered with a transparent panel, and the distance between the first screening track, the second screening track and the transparent panel is greater than the thickness of the bottle cap The first screening track has a material guide plate (10) provided below the first screening track, the upper end of the material guide plate is fixedly connected to the mounting plate, the lower end of the material guide plate is located in the hopper, a parabolic plate is fixed to the material guide plate, the parabolic plate comprises a fixed plate (20) and an arch plate (21), the fixed plate is fixedly connected to the material guide plate, the upper end of the arch plate is fixedly connected to the fixed plate, the lower end of the arch plate is located in the hopper and in contact with the material guide plate, a partition plate (11) is fixed to the right edge of the material guide plate, a material collecting trough is fixed to the outer side of the partition plate, a material leakage port (12) is provided at the upper part of the material collecting trough, and a material discharge port (13) is provided on the partition plate; a guide baffle (17) is fixed to the mounting plate located below the first screening track, the distance between the guide baffle and the transparent panel is less than the thickness of the bottle cap, the guide baffle is inclined, the lower end of the guide baffle is located above the material guide plate, and the horizontal distance between the lower end of the guide baffle and the partition plate is greater than the diameter of the bottle cap.

2. A plastic bottle cap orientation screening device according to claim 1, characterized in that: The first screening track is a strip-shaped plate structure, the outer side of the first screening track is provided with a material drop guide inclined surface (14), the horizontal surface of the top surface of the first screening track forms a bottle cap support surface (15), and the width of the bottle cap support surface is 1 / 4 to 1 / 3 of the thickness of the bottle cap.

3. A plastic bottle cap orientation screening device according to claim 1, characterized in that: A scraping plate (16) is fixed to the inner surface of the transparent panel, and the distance between the scraping plate and the mounting plate is adapted to the thickness of the bottle cap.

4. A plastic bottle cap orientation screening device according to claim 1, characterized in that: The partition is a U-shaped plate, and the opening of the partition faces the chain conveyor belt.

5. A plastic bottle cap orientation screening device according to claim 4, characterized in that: The material collecting trough hopper comprises a bottom plate (18), the bottom plate is in a right-angled trapezoid, the lower side of the bottom plate is fixedly connected to the partition plate, the right-angle waist of the bottom plate is fixedly connected to the mounting plate, and a surrounding plate (19) is fixed at the right-angle waist, the upper side, and the oblique waist of the bottom plate, the bottom plate, the surrounding plate, and the partition plate together form the material collecting trough hopper, and a gap is provided between the surrounding plate and the partition plate at the right-angle waist position of the bottom plate, and the gap forms a material leakage port.

6. A plastic bottle cap orientation screening device according to claim 1, characterized in that: An upper baffle (22) is fixed to the mounting plate at a position above the second screening track. The end of the upper baffle close to the first screening track is configured as an arc section with a concave surface facing outwards, and the end of the upper baffle away from the first screening track is configured as an arc section with a concave surface facing inwards. The distance between the upper baffle and the second screening track is adapted to the diameter of the bottle cap.

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