A wall thickness detection device for plastic bottle preform production

Abstract

The utility model discloses a kind of wall thickness detection devices for plastic bottle embryo production, belong to plastic bottle embryo wall thickness detection field, including platform, the top of the platform is fixedly connected with cylinder, the movable end of the cylinder is fixedly connected with adjusting lever, the movable end of the adjusting lever is fixedly connected with detection module, the movable end of the cylinder is fixedly connected with first spring outside the adjusting lever;The utility model is through the setting of cylinder, adjusting lever, first spring, detection module, slide bar, first inclined surface block, second inclined surface block, push block and locating block, when the movable end of cylinder drives second inclined surface block to move, it will cooperate with first inclined surface block and push push block to slide into platform, so as to reach that cylinder drives detection module to move downwards to appropriate position, can accurately adhere to the detection needs of different specifications bottle embryo, without manual adjustment detection module position, greatly improve the automation degree of detection operation.

Description

Technical Field

[0001] This utility model relates to the field of plastic preform wall thickness detection technology, specifically a wall thickness detection device for plastic preform production. Background Technology

[0002] Plastic preforms, or "preforms" for short, are semi-finished products in the plastic bottle molding process. They are similar to a "tubular plastic test tube" and have the complete structure of the bottle neck thread and the bottle cap sealing surface, but the bottle body has not yet been blown into shape. The production of plastic preforms requires the use of wall thickness detection devices for quality control to ensure that the plastic bottles subsequently blow-molded meet the design standards and usage requirements.

[0003] An investigation revealed that a Chinese utility model patent discloses a plastic bottle wall thickness detection device (publication number: CN220853507U), which includes a mounting base, a lifting cylinder, a variable diameter fixing component, and a detection component. The lifting cylinder is fixedly installed below the mounting base, and a placement plate is horizontally fixedly installed above the output end of the lifting cylinder. The variable diameter component is set on the mounting base directly above the placement plate. A rotating motor is fixedly installed above the mounting base, and the output end of the rotating motor is fixedly connected to the variable diameter component. The detection component is horizontally installed inside the mounting base and moves up and down along the inside of the mounting base.

[0004] While the aforementioned patents achieve rapid, standardized batch testing with higher efficiency and significantly reduced labor costs compared to existing technologies, some shortcomings remain in practical applications. For instance, during the clamping of preforms, the wall thickness detection position cannot be adjusted synchronously according to the different sizes of the preforms. This necessitates frequent changes of testing fixtures or manual adjustments to the position of the testing components when dealing with preforms of different specifications. This not only increases the complexity and time cost of the operation but may also affect the testing accuracy due to human error.

[0005] Therefore, this utility model provides a wall thickness detection device for plastic bottle preform production to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved This invention provides a wall thickness detection device for plastic bottle preform production, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a wall thickness detection device for plastic bottle preform production, comprising a platform, a cylinder fixedly connected to the top of the platform, an adjusting rod fixedly connected to the movable end of the cylinder, a detection module fixedly connected to the movable end of the adjusting rod, a first spring fixedly connected to the movable end of the cylinder on the outer ring of the adjusting rod, the end of the first spring away from the movable end of the cylinder being fixedly connected to the inner side of the detection module, and a clamping mechanism provided inside the platform.

[0008] The clamping mechanism includes a connecting rod slidably connected inside the platform. A positioning block is fixedly connected to one end of the connecting rod near the center of the platform. A second spring is fixedly connected to the inner wall of the end of the connecting rod. The end of the second spring away from the connecting rod is fixedly connected to the outer wall of the platform. A sliding rod is fixedly connected to the top of the positioning block. The detection module is slidably connected to the outer surface of the sliding rod.

[0009] As a preferred technical solution of this application, the platform is provided with a placement slot for placing the positioning block, a storage box is fixedly connected to the platform, and a pusher is provided in the placement slot within the platform.

[0010] As a preferred technical solution of this application, a first inclined block is fixedly connected to the top of the push block, and a second inclined block that contacts the first inclined block is fixedly connected to the movable end of the cylinder.

[0011] As a preferred technical solution of this application, a support rod is fixedly connected to the outer wall of the platform, and the push block is slidably connected to the outer surface of the support rod.

[0012] As a preferred technical solution of this application, a third spring is fixedly connected to the inner wall of the end of the support rod, and the end of the third spring away from the support rod is fixedly connected to the outer wall of the push block.

[0013] As a preferred technical solution of this application, a stop block is fixedly connected to the top of the push block, and a sealing block is fixedly connected to the bottom of the push block.

[0014] As a preferred technical solution of this application, a gear is rotatably connected to the platform, a pressing strip is fixedly connected to the outer surface of the gear, a rack that meshes with the gear is fixedly connected to the movable end of the cylinder, an opening is provided at the bottom of the platform, and a through hole is provided inside the platform for the rack to move.

[0015] (III) Beneficial Effects This invention utilizes a cylinder, adjusting rod, first spring, detection module, sliding rod, first inclined block, second inclined block, push block, and positioning block. When the moving end of the cylinder moves the second inclined block, it cooperates with the first inclined block to push the push block into the platform. Simultaneously, the preform presses against the inclined surfaces of the two positioning blocks, causing them to move away from each other. At this time, the sliding rod on the positioning block moves the detection module, using the adjusting rod to achieve synchronous position adjustment. This ensures that when the cylinder moves the detection module downwards to a suitable position, it can accurately meet the detection requirements of preforms of different specifications, eliminating the need for manual adjustment of the detection module position and greatly improving the automation level of the detection operation. Attached Figure Description

[0016] Figure 1 A schematic diagram of a wall thickness detection device for plastic bottle preform production; Figure 2 This is a rear-view structural diagram of a wall thickness detection device used in the production of plastic bottle preforms. Figure 3 This is a schematic diagram of the structure of a wall thickness detection device used in the production of plastic bottle preforms, viewed from below. Figure 4 This is a schematic diagram of the push block and positioning block in a wall thickness detection device for plastic bottle preform production. Figure 5 This is a schematic diagram of the platform in a wall thickness detection device for plastic bottle preform production. Figure 6 for Figure 4 A magnified structural diagram at point A.

[0017] In the picture: 1. Platform; 2. Cylinder; 3. Adjusting rod; 4. Detection module; 5. First spring; 6. Slide rod; 7. Connecting rod; 8. Positioning block; 9. Second spring; 10. Placement slot; 11. Storage box; 12. Push block; 13. First inclined block; 14. Second inclined block; 15. Support rod; 16. Third spring; 17. Stop block; 18. Sealing block; 19. Rack; 20. Gear; 21. Pressing strip; 22. Opening; 23. Through hole. Detailed Implementation

[0018] 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.

[0019] This utility model provides a wall thickness detection device for plastic bottle preform production, such as... Figure 1-6As shown, the wall thickness detection device includes a platform 1, a cylinder 2 is fixedly connected to the top of the platform 1, an adjusting rod 3 is fixedly connected to the movable end of the cylinder 2, a detection module 4 is fixedly connected to the movable end of the adjusting rod 3, a first spring 5 is fixedly connected to the movable end of the cylinder 2 on the outer ring of the adjusting rod 3, and the end of the first spring 5 away from the movable end of the cylinder 2 is fixedly connected to the inner side of the detection module 4. A clamping mechanism is provided inside the platform 1.

[0020] The clamping mechanism includes a connecting rod 7 that is slidably connected inside the platform 1. A positioning block 8 is fixedly connected to one end of the connecting rod 7 near the center of the platform 1. A second spring 9 is fixedly connected to the inner wall of the end of the connecting rod 7. The end of the second spring 9 away from the connecting rod 7 is fixedly connected to the outer wall of the platform 1. A slide rod 6 is fixedly connected to the top of the positioning block 8. The detection module 4 is slidably connected to the outer surface of the slide rod 6.

[0021] Platform 1 has a placement slot 10 for placing positioning block 8. A storage box 11 is fixedly connected to platform 1. A pusher block 12 is set inside platform 1 in the placement slot 10.

[0022] The top of the push block 12 is fixedly connected to a first inclined block 13, and the movable end of the cylinder 2 is fixedly connected to a second inclined block 14 that contacts the first inclined block 13.

[0023] Specifically, when the preform needs to be tested for wall thickness, multiple preforms to be tested are first gathered in the storage box 11, and one preform in the storage box 11 falls into the placement slot 10. Then, the moving end of the cylinder 2 drives the adjusting rod 3 and the detection module 4 to move downward. During this process, the second inclined block 14 on the moving end of the cylinder 2 will contact the first inclined block 13 on the top of the push block 12. As the second inclined block 14 continues to move downward, it will squeeze the first inclined block 13, causing the push block 12 to move in the placement slot 10 toward the preform, and then push the preform in the placement slot 10 toward the positioning block 8. When the preform is pushed to contact the positioning block 8, the inclined surface of the positioning block 8 will be pushed by the preform and drive the connecting rod 7 to slide outward of the platform 1. When the connecting rod 7 moves, it will compress the second spring 9. Using the elastic restoring force of the second spring 9, the positioning block 8 can tightly clamp the preform to ensure the stability of the preform during the test.

[0024] During this process, the movement of the positioning block 8 transmits force to the detection module 4 through the slide rod 6, enabling the detection module 4 to synchronously adjust its position using the adjusting rod 3. This ensures that after the positioning block 8 positions preforms of different sizes, the detection dimension of the detection module 4 also conforms to the current preform size. As the adjusting rod 3 continues to push the detection module 4 under the drive of the cylinder 2, the detection slot of the detection module 4 gradually contacts the inner and outer surfaces of the preform. When the preform can be completely embedded in the detection slot of the detection module 4, it indicates that the wall thickness of the preform meets the production specifications; otherwise, it does not. This allows the device to automatically adjust the detection module 4 to a suitable detection position according to the preform size during the clamping process, achieving rapid adaptation to preforms of different specifications without manual intervention. The first spring 5 provides the detection module 4 with a restoring force, facilitating adaptive adjustment according to the preform size in the next operation.

[0025] A support rod 15 is fixedly connected to the outer wall of platform 1, and a push block 12 is slidably connected to the outer surface of the support rod 15.

[0026] A third spring 16 is fixedly connected to the inner wall of the end of the support rod 15, and the end of the third spring 16 away from the support rod 15 is fixedly connected to the outer wall of the push block 12.

[0027] Specifically, the third spring 16 provides the reset power for the push block 12. After the detection module 4 completes the wall thickness detection of the current preform, the cylinder 2 will drive the second inclined block 14 and the detection module 4 to reset upwards. After the second inclined block 14 loses its pressure on the first inclined block 13, the push block 12 will be reset by the elastic force of the third spring 16, which facilitates the start of a new round of detection process. This cycle repeats to achieve continuous automated detection of the wall thickness of the plastic preform. The support rod 15 provides a stable guiding function for the movement of the push block 12, preventing the push block 12 from bending or becoming unstable due to the support of the third spring 16 alone after the second inclined block 14 applies pressure to the first inclined block 13. This ensures the stability of the push block 12 during the movement and pushing process.

[0028] A stop block 17 is fixedly connected to the top of the push block 12, and a sealing block 18 is fixedly connected to the bottom of the push block 12.

[0029] A gear 20 is rotatably connected to the platform 1. A pressing strip 21 is fixedly connected to the outer surface of the gear 20. A rack 19 that meshes with the gear 20 is fixedly connected to the movable end of the cylinder 2. An opening 22 is provided at the bottom of the platform 1. A through hole 23 for the rack 19 to move is provided inside the platform 1.

[0030] Specifically, the design of the stop block 17 will appropriately seal and open the inlet of the storage box 11 according to the current detection requirements. When the push block 12 pushes a preform to the detection area, the stop block 17 will seal the inlet of the storage box 11 to prevent multiple preforms from falling into the placement slot 10 in sequence and affecting the normal operation of the subsequent structure. The sealing block 18 on the push block 12 will also seal the opening 22 to further ensure that the preforms being clamped for detection have a stable placement state. After the detection module 4 completes the detection of the current preform, the cylinder 2 drives the rack 19 to move upward. The rack 19 meshes with the gear 20 to make the gear 20 rotate, which in turn drives the pressing bar 21 to rotate downward. The pressing bar 21 will then press the preform down from the opening 22 to the collection point.

[0031] Furthermore, with the second inclined block 14 being reset by the cylinder 2, the stop block 17 releases the seal on the feeding port of the storage box 11, and the next preform to be tested will fall into the placement groove 10 under gravity. At the same time, the sealing block 18 also moves away from the opening 22, preparing for the next preform to be released. Throughout the process, the cooperation of the gear 20, rack 19 and pressing strip 21 realizes the automatic unloading after the preform is tested. The synergistic effect of the stop block 17 and the sealing block 18 effectively avoids the problem of positional deviation or multiple material interference of the preform in the conveying and testing process, making the automated operation process of the device more coherent and efficient. The through hole 23 provides enough space for the movement of the rack 19, preventing the rack 19 from being unable to operate normally due to the obstruction of the platform 1 under the drive of the cylinder 2.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wall thickness detection device for plastic bottle preform production, comprising a platform (1), characterized in that: A cylinder (2) is fixedly connected to the top of the platform (1). An adjusting rod (3) is fixedly connected to the movable end of the cylinder (2). A detection module (4) is fixedly connected to the movable end of the adjusting rod (3). A first spring (5) is fixedly connected to the movable end of the cylinder (2) on the outer ring of the adjusting rod (3). The end of the first spring (5) away from the movable end of the cylinder (2) is fixedly connected to the inner side of the detection module (4). A clamping mechanism is provided inside the platform (1). The clamping mechanism includes a connecting rod (7) slidably connected inside the platform (1). A positioning block (8) is fixedly connected to one end of the connecting rod (7) near the center of the platform (1). A second spring (9) is fixedly connected to the inner wall of the end of the connecting rod (7). The end of the second spring (9) away from the connecting rod (7) is fixedly connected to the outer wall of the platform (1). A slide rod (6) is fixedly connected to the top of the positioning block (8). The detection module (4) is slidably connected to the outer surface of the slide rod (6).

2. The wall thickness detection device for plastic bottle preform production according to claim 1, characterized in that: The platform (1) is provided with a placement slot (10) for placing the positioning block (8), and a storage box (11) is fixedly connected to the platform (1). A pusher (12) is provided in the platform (1) within the placement slot (10).

3. The wall thickness detection device for plastic bottle preform production according to claim 2, characterized in that: The top of the push block (12) is fixedly connected to a first inclined block (13), and the movable end of the cylinder (2) is fixedly connected to a second inclined block (14) that contacts the first inclined block (13).

4. The wall thickness detection device for plastic bottle preform production according to claim 3, characterized in that: The platform (1) is fixedly connected to a support rod (15) on its outer wall, and the push block (12) is slidably connected to the outer surface of the support rod (15).

5. The wall thickness detection device for plastic bottle preform production according to claim 4, characterized in that: A third spring (16) is fixedly connected to the inner wall of the end of the support rod (15), and the end of the third spring (16) away from the support rod (15) is fixedly connected to the outer wall of the push block (12).

6. The wall thickness detection device for plastic bottle preform production according to claim 2, characterized in that: A stop block (17) is fixedly connected to the top of the push block (12), and a sealing block (18) is fixedly connected to the bottom of the push block (12).

7. The wall thickness detection device for plastic bottle preform production according to claim 1, characterized in that: A gear (20) is rotatably connected to the platform (1). A pressing strip (21) is fixedly connected to the outer surface of the gear (20). A rack (19) that meshes with the gear (20) is fixedly connected to the movable end of the cylinder (2). An opening (22) is provided at the bottom of the platform (1). A through hole (23) is provided inside the platform (1) for the rack (19) to move.

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