A PET preform transfer bin with a pressure-reducing device

Abstract

This utility model belongs to the field of PET bottle production technology, specifically a PET preform conveying hopper with a blocking and pressure reducing device. It includes a hopper with an inclined conveyor belt installed on its rear interior side. A sliding plate is located at the center of the top side of the hopper. Mounting plates are fixedly connected to the front and rear sides of the top of the hopper. A rotating rod is rotatably inserted between the two sets of mounting plates. The angle adjustment component of this utility model, through the linkage of an electric push rod and a hinge seat, maintains the tilt angle of the sliding plate at approximately 30 degrees, thereby optimizing the flow direction of the preforms within the hopper. This allows the preforms to preferentially accumulate in the left-side area of ​​the hopper, avoiding concentrated compression in the middle of the conveyor belt and significantly reducing the risk of the conveyor belt overloading. Simultaneously, the scale and indicator groove at the bottom of the sliding plate, in conjunction with the indicator groove, can visually display the current tilt angle, facilitating quick calibration by the operator.

Description

Technical Field

[0001] This utility model relates to the field of PET bottle production technology, specifically to a PET preform transfer hopper with a blocking and pressure reducing device. Background Technology

[0002] PET preforms are semi-finished plastic products made through injection molding, primarily used for subsequent blow molding into various types of plastic bottles. Made of polyethylene terephthalate (PET), they possess high transparency, chemical resistance, lightweight yet high strength, and are widely used in beverage (e.g., mineral water, carbonated drinks), food (e.g., edible oil, tea drinks), daily chemical (e.g., cosmetics, toiletries), and medical packaging. With the advancement of environmental regulations, reusable PET bottles are gradually becoming an industry trend, combining convenient transportation with the advantages of recycling, making them one of the most recycled categories of plastic packaging materials.

[0003] In the PET preform production process, preforms are usually stacked at the bottom of the hopper and transported to the next process by an inclined conveyor belt. Due to the slender shape of PET preforms, irregular stacking can easily form a "bridging" phenomenon inside the hopper, causing the preforms to be concentrated and squeezed in the middle area of ​​the conveyor belt, which in turn leads to problems such as overload operation of the conveyor belt, jamming, or even damage. To address this, we propose a PET preform transfer hopper with a blocking and pressure-reducing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a PET preform conveying hopper with a blocking and pressure-reducing device. The angle adjustment component, through the linkage between the electric push rod and the hinge seat, maintains the tilt angle of the sliding plate at approximately 30 degrees, thereby optimizing the flow direction of the preforms within the hopper. This allows the preforms to accumulate preferentially in the left-side area of ​​the hopper, preventing them from being concentrated and squeezed in the middle of the conveyor belt, thus solving the problem mentioned earlier.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PET preform conveyor hopper with a pressure-reducing device, comprising a hopper, an inclined conveyor belt installed on the rear side of the hopper, a sliding plate provided at the center of the top side of the hopper, mounting plates fixedly connected to the front and rear sides of the top of the hopper, a rotating rod rotatably passing between the two sets of mounting plates, mounting plates fixedly connected to the front and rear sides of the bottom of the sliding plate, and both sets of mounting plates fixedly sleeved on the rotating rod, an angle adjustment assembly for adjusting the rotation angle of the sliding plate installed on the top right side of the hopper, a pressure-reducing plate slidably connected to the inner surface of the top side of the sliding plate, and a reciprocating sliding assembly for preventing the pressure-reducing plate from reciprocating on the sliding plate installed at the bottom of the sliding plate.

[0006] Preferably, the angle adjustment assembly includes an electric push rod, a fixed plate is fixedly connected to the top right side of the hopper, the bottom of the electric push rod is hinged to the fixed plate, a hinge seat is fixedly connected to the bottom right side of the sliding plate, and the output shaft end of the electric push rod is hinged to the hinge seat.

[0007] Preferably, the reciprocating sliding assembly includes a drive motor, which is fixedly mounted on the bottom side of the sliding plate. A mounting groove is formed in the center of the bottom side of the sliding plate. A fixing block is fixedly connected to the center of the bottom side of the blocking and pressure-reducing plate. The fixing block is slidably connected to the mounting groove. Sliding rods are fixedly connected to both the left and right sides of the fixing block. Two sets of sliding rods slide through the left and right sides of the mounting groove, respectively, and springs are sleeved on both sets of sliding rods. The two ends of the springs abut against the outer surface of the fixing block and the inner wall of the mounting groove, respectively. Mounting plates three are fixedly connected to the front and rear sides of the bottom of the sliding plate. A rotating rod two is rotatably passed between the two sets of mounting plates three. The output shaft end of the drive motor is fixedly connected to the rear end of the rotating rod two. A cam block is fixedly sleeved in the center of the rotating rod two, and the cam block is positioned directly below the fixing block.

[0008] Preferably, the sliding plate has sliding grooves on both its front and rear sides, and the blocking and pressure reducing plate has sliding blocks fixedly connected to both its front and rear sides, with the sliding blocks slidably connected to the sliding grooves.

[0009] Preferably, a circular plate is fixedly connected to the front side of the mounting plate one located at the front, the circular plate is provided with a scale, and the front end of the rotating rod one is provided with an indicator groove.

[0010] Preferably, a camera is also installed on the top right side of the hopper.

[0011] Preferably, a controller is installed at the upper left corner of the front side of the hopper.

[0012] Preferably, both the sliding plate and the pressure-reducing plate are made of steel plate.

[0013] This invention provides a PET preform conveying hopper with a pressure-reducing blocking device. Compared with the prior art, it has the following advantages:

[0014] 1. This PET preform conveying hopper with a blocking and pressure reducing device has an angle adjustment component installed on the top right side of the hopper to adjust the rotation angle of the sliding plate. The angle adjustment component is linked with the hinge seat through an electric push rod to keep the tilt angle of the sliding plate at about 30 degrees, thereby optimizing the flow direction of the preforms in the hopper and causing the preforms to accumulate preferentially in the left side of the hopper, avoiding concentrated compression in the middle of the conveyor belt, and significantly reducing the risk of the conveyor belt overload operation. At the same time, the scale and indicator groove at the bottom of the sliding plate can intuitively display the current tilt angle, which is convenient for operators to quickly calibrate.

[0015] 2. The PET preform transfer hopper with a blocking and pressure reducing device has a reciprocating sliding assembly installed at the bottom of the sliding plate to block the pressure reducing plate from sliding back and forth on the sliding plate. The reciprocating sliding assembly converts the power into linear reciprocating motion through the rotational motion of the cam block, so that the blocking and pressure reducing plate continuously disturbs the material accumulation layer and destroys the bridging structure that is easily formed by the slender shape of the PET preform. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the main body of this utility model;

[0017] Figure 2 This is a top view of the main structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the front view of the main body structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom part of the sliding plate of this utility model;

[0020] Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 6 This utility model Figure 3 Enlarged schematic diagram of the structure at point B;

[0022] Figure 7 This utility model Figure 4 Enlarged schematic diagram of the structure at point C.

[0023] In the diagram: 1. Hopper; 2. Sliding plate; 3. Controller; 4. Inclined conveyor belt; 5. Pressure reducing plate; 6. Camera; 7. Electric push rod; 8. Fixed plate; 9. Hinge seat one; 10. Rotating rod one; 11. Mounting plate one; 12. Sliding groove; 13. Sliding block; 14. Mounting plate two; 15. Mounting groove; 16. Mounting plate three; 17. Drive motor; 18. Rotating rod two; 19. Cam block; 20. Circular plate; 21. Scale; 22. Indicator groove; 23. Fixed block; 24. Sliding rod; 25. Spring. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-7 This utility model provides a technical solution: a PET preform conveyor hopper with a pressure-reducing device, including a hopper 1, an inclined conveyor belt 4 installed on the rear side of the hopper 1, a sliding plate 2 provided in the middle of the top side of the hopper 1, mounting plates 11 fixedly connected to the front and rear sides of the top of the hopper 1, a rotating rod 10 rotatably passing between the two sets of mounting plates 11, mounting plates 14 fixedly connected to the front and rear sides of the bottom of the sliding plate 2, and both sets of mounting plates 14 fixedly sleeved on the rotating rod 10, an angle adjustment component for adjusting the rotation angle of the sliding plate 2 is installed on the right side of the top of the hopper 1, a pressure-reducing plate 5 is slidably connected to the inner surface of the top side of the sliding plate 2, and a reciprocating sliding component for preventing the pressure-reducing plate 5 from reciprocating on the sliding plate 2 is installed at the bottom of the sliding plate 2.

[0026] When the PET preform is poured into the hopper 1, the two sets of mounting plates 11 are rotatably connected to the rotating rod 10, and the two sets of mounting plates 14 at the bottom of the sliding plate 2 are fixedly sleeved on the rotating rod 10. The tilt angle of the sliding plate 2 is adjusted by the angle adjustment component on the right side of the top of the hopper 1, and the preform is guided to slide into the hopper 1 along the blocking pressure relief plate 5 connected to the inner surface of the sliding plate 2. The blocking pressure relief plate 5 slides back and forth under the drive of the reciprocating sliding component at the bottom of the sliding plate 2, periodically disturbing the accumulated preform, breaking the bridging phenomenon, and the preform is preferentially accumulated in the left side area of ​​the hopper 1, avoiding concentrated compression in the middle of the inclined conveyor belt 4, thereby reducing the pressure load on the inclined conveyor belt 4 and achieving stable transmission.

[0027] The angle adjustment assembly includes an electric push rod 7, a fixed plate 8 is fixedly connected to the top right side of the hopper 1, the bottom of the electric push rod 7 is hinged to the fixed plate 8, a hinge seat 9 is fixedly connected to the bottom right side of the sliding plate 2, and the output shaft end of the electric push rod 7 is hinged to the hinge seat 9.

[0028] When the angle adjustment component is working, when the electric push rod 7 extends or retracts, its output shaft pushes or pulls back the hinge seat 9, changing the tilt angle of the sliding plate 2 through leverage, thereby adjusting the direction of the preform sliding along the sliding plate 2.

[0029] The reciprocating sliding assembly includes a drive motor 17, which is fixedly mounted on the bottom side of the sliding plate 2. A mounting groove 15 is provided in the middle of the bottom side of the sliding plate 2. A fixing block 23 is fixedly connected to the middle of the bottom side of the blocking and pressure reducing plate 5. The fixing block 23 is slidably connected to the mounting groove 15. Sliding rods 24 are fixedly connected to the left and right sides of the fixing block 23. The two sets of sliding rods 24 are slidably inserted through the left and right sides of the mounting groove 15, and springs 25 are sleeved on the two sets of sliding rods 24. The two ends of the springs 25 abut against the outer surface of the fixing block 23 and the inner wall of the mounting groove 15, respectively. Mounting plates 3 16 are fixedly connected to the front and rear sides of the bottom of the sliding plate 2. A rotating rod 2 18 is rotatably inserted between the two sets of mounting plates 3 16. The output shaft end of the drive motor 17 is fixedly connected to the rear end of the rotating rod 2 18. A cam block 19 is fixedly sleeved in the middle of the rotating rod 2 18, and the cam block 19 is located directly below the fixing block 23.

[0030] When the reciprocating sliding assembly is working, the drive motor 17 drives the rotating rod 18 to rotate. The cam block 19 in the middle of the rotating rod 18 periodically contacts the fixed block 23 as the motor rotates. The fixed block 23 is fixed to the middle of the bottom side of the blocking pressure reducing plate 5. The fixed block 23 slides left and right in the mounting groove 15 through the sliding rod 24. The spring 25 on the sliding rod 24 provides the restoring force. The rotational motion of the cam block 19 is converted into the linear reciprocating motion of the fixed block 23, which drives the blocking pressure reducing plate 5 to slide periodically in the sliding plate 2.

[0031] The sliding plate 2 has sliding grooves 12 on both the front and rear sides. The blocking pressure relief plate 5 has sliding blocks 13 fixedly connected to both the front and rear sides. The sliding blocks 13 are slidably connected to the sliding grooves 12. The sliding grooves 12 on the front and rear sides of the sliding plate 2 are slidably connected to the sliding blocks 13 on the front and rear sides of the blocking pressure relief plate 5, which restricts the movement trajectory of the blocking pressure relief plate 5 and ensures that it remains horizontally aligned during the reciprocating sliding process, avoiding jamming or unstable movement due to deviation.

[0032] A circular plate 20 is fixedly connected to the front side of the mounting plate 11 located on the front side. A scale 21 is provided on the circular plate 20. An indicator groove 22 is provided at the front end of the rotating rod 10. When the sliding plate 2 rotates due to the angle adjustment component, the rotating rod 10 rotates synchronously. The indicator groove 22 displays the current tilt angle of the sliding plate 2 in real time on the scale 21, which makes it easy for the operator to read and adjust to the target angle intuitively.

[0033] A camera 6 is also installed on the top right side of the silo 1 to monitor the accumulation of materials in the sliding plate 2 and the silo 1 in real time.

[0034] A controller 3 is installed on the upper left corner of the front side of the hopper 1. The controller 3 automatically controls the extension and retraction of the electric push rod 7 and dynamically adjusts the tilt angle of the sliding plate 2 to realize intelligent control of material distribution.

[0035] Both the sliding plate 2 and the pressure-reducing plate 5 are made of steel plates to ensure that they have sufficient strength and wear resistance.

[0036] Working principle: When the PET preform is poured into the hopper 1, the two sets of mounting plates 11 are rotatably connected to the rotating rod 10. The two sets of mounting plates 14 at the bottom of the sliding plate 2 are fixedly sleeved on the rotating rod 10. When the electric push rod 7 extends or retracts, its output shaft pushes or pulls back the hinge seat 9, changing the tilt angle of the sliding plate 2 through leverage. This guides the preform to slide into the hopper 1 along the sliding pressure plate 5 connected to the inner surface of the sliding plate 2. The rotating rod 18 is driven to rotate by the drive motor 17. The cam block 19 in the middle of the rotating rod 18 periodically contacts the fixed block 23 as the motor rotates. The fixing block 23 is fixed to the middle of the bottom side of the blocking pressure reducing plate 5, and the fixing block 23 slides left and right in the mounting groove 15 through the sliding rod 24. The spring 25 on the sliding rod 24 provides the restoring force. The rotational motion of the cam block 19 is converted into the linear reciprocating motion of the fixing block 23, which drives the blocking pressure reducing plate 5 to slide periodically in the sliding plate 2, periodically disturbing the bottle preforms accumulated on the blocking pressure reducing plate 5, breaking the bridging phenomenon. The bottle preforms are preferentially accumulated in the left side area of ​​the hopper 1, avoiding concentrated compression in the middle position of the inclined conveyor belt 4, thereby reducing the pressure load on the inclined conveyor belt 4 and achieving stable transmission.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PET preform transfer hopper with a pressure-reducing device, comprising a hopper (1), characterized in that: An inclined conveyor belt (4) is installed on the rear side of the inside of the silo (1). A sliding plate (2) is provided in the middle of the top side of the silo (1). Mounting plate 1 (11) is fixedly connected to the front and rear sides of the top of the silo (1). A rotating rod 1 (10) is rotatably passed between the two sets of mounting plates 1 (11). Mounting plate 2 (14) is fixedly connected to the front and rear sides of the bottom of the sliding plate (2). Both sets of mounting plates 2 (14) are fixedly sleeved on the rotating rod 1 (10). An angle adjustment component for adjusting the rotation angle of the sliding plate (2) is installed on the right side of the top of the silo (1). A pressure reducing plate (5) is slidably connected to the inner surface of the top side of the sliding plate (2). A reciprocating sliding component for preventing the pressure reducing plate (5) from sliding back and forth on the sliding plate (2) is installed at the bottom of the sliding plate (2).

2. The PET preform conveying hopper with a pressure-reducing device according to claim 1, characterized in that: The angle adjustment assembly includes an electric push rod (7), a fixed plate (8) is fixedly connected to the top right side of the hopper (1), the bottom of the electric push rod (7) is hinged to the fixed plate (8), the bottom right side of the sliding plate (2) is fixedly connected to a hinge seat (9), and the output shaft end of the electric push rod (7) is hinged to the hinge seat (9).

3. The PET preform conveying hopper with a pressure-reducing device according to claim 1, characterized in that: The reciprocating sliding assembly includes a drive motor (17), which is fixedly installed on the bottom side of the sliding plate (2). A mounting groove (15) is provided in the middle of the bottom side of the sliding plate (2). A fixing block (23) is fixedly connected to the middle of the bottom side of the blocking and pressure reducing plate (5). The fixing block (23) is slidably connected to the mounting groove (15). Sliding rods (24) are fixedly connected to the left and right sides of the fixing block (23). The two sets of sliding rods (24) are respectively slidably inserted through the left and right sides of the mounting groove (15), and both sets of sliding rods (24) are fixedly connected to the mounting groove (15). A spring (25) is fitted on the bottom of the sliding plate (2). The two ends of the spring (25) abut against the outer surface of the fixed block (23) and the inner wall of the mounting groove (15), respectively. Mounting plates three (16) are fixedly connected to the bottom front and rear sides of the sliding plate (2). A rotating rod two (18) is rotatably connected between the two sets of mounting plates three (16). The output shaft end of the drive motor (17) is fixedly connected to the rear end of the rotating rod two (18). A cam block (19) is fixedly fitted in the middle of the rotating rod two (18), and the cam block (19) is located directly below the fixed block (23).

4. The PET preform conveying hopper with a pressure-reducing device according to claim 3, characterized in that: The sliding plate (2) has sliding grooves (12) on both the front and rear sides, and the blocking pressure reducing plate (5) has sliding blocks (13) fixedly connected to both the front and rear sides. The sliding blocks (13) are slidably connected to the sliding grooves (12).

5. A PET preform conveying hopper with a pressure-reducing device according to claim 1, characterized in that: A circular plate (20) is fixedly connected to the front side of the mounting plate (11) located on the front side. A scale (21) is provided on the circular plate (20), and an indicator groove (22) is provided at the front end of the rotating rod (10).

6. The PET preform conveying hopper with a pressure-reducing device according to claim 1, characterized in that: A camera (6) is also installed on the top right side of the hopper (1).

7. A PET preform conveying hopper with a pressure-reducing device according to claim 1, characterized in that: A controller (3) is installed on the upper left front corner of the hopper (1).

8. A PET preform conveying hopper with a pressure-reducing device according to claim 1, characterized in that: Both the sliding plate (2) and the pressure-reducing plate (5) are made of steel plate.

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