A plastic bottle capping device

Abstract

The utility model relates to a plastic bottle capping device, including fixed base, fixedly set up on the support surface, first installation groove, the center place of inside of fixed base is opened, and the center place of inside of first installation groove is set up the board, and located at the top, plastic bottle body, places in the top of placing board, center positioning clamping mechanism, set up in the inside of first installation groove, including drive end and two clamping ends, drive end is used for driving two clamping ends and carries out the movement to each other, and center positioning clamping mechanism relies on the transmission chain of " drive motor worm turbine bidirectional screw", cooperates the spacing restraint of guide sliding block and guide sliding groove, drives V -shaped clamping seat and carries out the movement to each other, compared with the random deviation of manual placement plastic bottle, and this mechanism is through the accurate control of mechanical drive, and automatic completion bottle body center alignment.

Description

Technical Field

[0001] This utility model relates to the field of plastic bottle capping, and specifically to a plastic bottle capping device. Background Technology

[0002] Plastic bottles are widely used in the food, beverage, and pharmaceutical industries. The capping process is a crucial step in the plastic bottle packaging process, requiring specialized capping devices to accurately and securely install the caps onto the plastic bottles, ensuring airtightness and product quality.

[0003] The existing patent, "A Capping Device for Plastic Bottles," published under announcement number [CN207209917U], while capable of basic capping operations, has significant shortcomings:

[0004] It lacks an efficient and precise centering and positioning mechanism for plastic bottles, and manual placement of plastic bottles is prone to positional deviation, affecting the capping accuracy and stability; the driving and guiding structure of the capping mechanism is relatively simple, and it is prone to shaking during the pressing process, resulting in poor capping effect;

[0005] Therefore, it is necessary to innovate and improve the capping device for plastic bottles to solve the above problems. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing a plastic bottle capping device.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] A plastic bottle capping device includes: a fixed base, fixedly mounted on a support surface; a first mounting groove, formed at the center inside the fixed base; a placement plate, disposed at the center inside the first mounting groove and located at the top; and a plastic bottle body, placed on top of the placement plate.

[0009] A centering positioning clamping mechanism is located inside the first mounting groove, including a driving end and two clamping ends. The driving end is used to drive the two clamping ends to move in opposite directions to achieve centering clamping and positioning of the plastic bottle body. The bottle cap body is located on top of the plastic bottle body. The capping mechanism is fixedly located on top of the fixed base, including a driving guide end and a lowering capping sleeve. The driving guide end is used to drive the lowering capping sleeve to press down firmly and apply pressure to the bottle cap body to install the bottle cap body onto the plastic bottle body.

[0010] Preferably, the drive end includes: a bidirectional lead screw, installed inside the first mounting groove; a worm gear, fixedly disposed at the center of the bidirectional lead screw; a mounting base, fixedly disposed at the bottom of the fixed base; a worm gear, disposed inside the mounting base; a drive motor, disposed on the back side of the worm gear, and its output end connected to the worm gear; and guide sliding grooves, formed on the front and back sidewalls of the first mounting groove.

[0011] Preferably, the clamping end includes: a sliding nut threadedly connected to a bidirectional lead screw; two guide sliders fixedly disposed on the front and back sidewalls of the sliding nut and slidably connected to the two guide sliding grooves; a mounting plate fixedly disposed on the top of the sliding nut; and a clamping seat fixedly disposed on the sidewall of the mounting plate, in a V-shape, for clamping the plastic bottle body.

[0012] Preferably, the drive motor is used to drive the worm to rotate; the worm meshes with the turbine; when the worm rotates, it drives the turbine to rotate, and the turbine is fixedly connected to the bidirectional lead screw, thereby driving the bidirectional lead screw to rotate; when the bidirectional lead screw rotates, it drives two sliding nuts to move in opposite directions, and when the sliding nuts move, they slide in the guide sliding groove through the guide slider.

[0013] Preferably, the drive guide end includes: a support base, fixedly mounted on the top of the fixed base; two second mounting slots, formed on the side walls of the support base; two linear optical axes, fixedly mounted inside the two second mounting slots; two sliding blocks, slidably connected to the two linear optical axes; a connecting lower pressure plate, fixedly mounted between the two sliding blocks, and its bottom connected to the lower pressure cover sleeve; and a pneumatic rod, fixedly mounted on the top of the support base, with its output end fixed to the connecting lower pressure plate.

[0014] Preferably, the air rod is used to drive the connecting lower pressure plate to move; when the connecting lower pressure plate moves, it slides on two linear optical axes through two sliding blocks; when the connecting lower pressure plate moves, it drives the lower pressure cap sleeve to move synchronously and performs a capping operation on the bottle cap body.

[0015] The beneficial effects of this utility model are:

[0016] The centering and clamping mechanism relies on a transmission chain of "drive motor → worm gear → turbine → bidirectional lead screw" and, with the limiting constraints of the guide slider and guide sliding groove, drives the V-shaped clamping seat to move in opposite directions. Compared with the random deviation of manually placing plastic bottles, this mechanism automatically completes the centering and alignment of the bottle through precise control of mechanical transmission. This not only improves positioning efficiency but also enhances clamping stability by utilizing the self-locking characteristics of the worm gear and the tolerance constraints of the guide structure, ensuring that the bottle and the capping mechanism are coaxially aligned and avoiding the risk of cap misalignment from the source.

[0017] The capping mechanism is powered by a pneumatic rod and uses a guide system consisting of a linear optical axis and a sliding block to constrain the movement trajectory of the lower pressure plate. Compared to the wobbling defects of simple drive structures, the rigid support of the linear optical axis and the low-friction cooperation of the sliding block make the lower pressure of the capping sleeve more stable, avoiding problems such as cap breakage and seal failure caused by force misalignment. This ensures uniform capping force and secure installation, improving the sealing quality of plastic bottles and the reliability of equipment operation. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the main body of this utility model;

[0019] Figure 2 This is a top view of the centering and clamping mechanism of this utility model;

[0020] Figure 3 This is a bottom view of the centering positioning clamping mechanism of this utility model.

[0021] Figure 4 This is a schematic diagram of the capping mechanism of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the main body of this utility model;

[0023] Figure 6 For the present utility model Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 10. Fixed base; 20. First mounting slot; 30. Placement plate; 40. Plastic bottle body; 50. Centered positioning clamping mechanism; 501. Two-way lead screw; 502. Turbine; 503. Mounting seat; 504. Worm gear; 505. Drive motor; 506. Sliding nut; 507. Guide sliding groove; 508. Guide slider; 509. Mounting plate; 510. Clamping seat; 60. Bottle cap body; 70. Capping mechanism; 701. Support seat; 702. Second mounting slot; 703. Linear optical axis; 704. Sliding block; 705. Connecting lower pressure plate; 706. Air rod; 707. Lower pressure capping sleeve. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0029] Example

[0030] Please see Figures 1 to 6 A plastic bottle capping device includes: a fixed base 10, which is fixedly mounted on a support surface to provide a stable installation foundation for the entire device;

[0031] The first mounting slot 20 is located at the center inside the fixed base 10, forming a mounting space for the internal components of the device;

[0032] The placement plate 30 is located at the center inside the first mounting groove 20 and at the top, for supporting the plastic bottle body 40 and placing it at a suitable capping height.

[0033] The plastic bottle body 40 is placed on top of the placement plate 30 and is the object of the capping operation;

[0034] The centering positioning clamping mechanism 50 is located inside the first mounting groove 20 and includes a driving end and two clamping ends. The driving end is used to drive the two clamping ends to move in opposite directions to achieve centering clamping and positioning of the plastic bottle body 40.

[0035] The bottle cap body 60 is set on top of the plastic bottle body 40 and is ready to be pressed into the bottle mouth;

[0036] The capping mechanism 70 is fixedly mounted on the top of the fixed base 10. It includes a drive guide end and a lower capping sleeve 707. The drive guide end is used to drive the lower capping sleeve 707 to press down firmly and apply pressure to the cap body 60, so as to install the cap body 60 onto the plastic bottle body 40.

[0037] The fixed base 10 provides support for the entire device. After the plastic bottle body 40 is placed on the placement plate 30, the driving end of the centering clamping mechanism 50 drives the clamping end to center the plastic bottle body 40, ensuring that it is coaxial with the capping mechanism 70. Then, the driving guide end of the capping mechanism 70 drives the lowering capping sleeve 707 to press down smoothly, accurately pressing the bottle cap body 60 onto the bottle mouth of the plastic bottle body 40, completing the capping operation.

[0038] The driver includes:

[0039] The bidirectional lead screw 501 is installed inside the first mounting groove 20 and is set along the length direction of the first mounting groove 20;

[0040] The turbine 502 is fixedly installed at the center of the double-acting lead screw 501 and rotates synchronously with the double-acting lead screw 501.

[0041] Mounting base 503 is fixedly mounted on the bottom of fixed base 10 to provide mounting support for worm gear 504;

[0042] The worm gear 504 is located inside the mounting base 503 and meshes with the turbine 502;

[0043] The drive motor 505 is located on the back side of the worm 504, and its output end is connected to the worm 504 to provide power to the drive end.

[0044] The guide sliding groove 507 is formed on the front and back side walls of the first mounting groove 20 and extends along the length direction of the bidirectional lead screw 501.

[0045] After the drive motor 505 starts, its output end drives the worm 504 to rotate in the mounting base 503. Since the worm 504 meshes with the worm wheel 502, the worm wheel 502 rotates with the worm 504 and drives the bidirectional lead screw 501 to rotate synchronously, providing driving force for the opposing movement of the clamping end; the guide sliding groove 507 provides a guide trajectory for the movement of the clamping end, ensuring smooth movement.

[0046] The clamping end includes:

[0047] The sliding nut 506 is threadedly connected to the double-acting lead screw 501, forming a helical drive with the double-acting lead screw 501.

[0048] Two guide sliders 508 are fixedly mounted on the front and back sidewalls of the sliding nut 506 and are slidably connected to the two guide sliding grooves 507, thus restricting the rotational freedom of the sliding nut 506.

[0049] Mounting plate 509 is fixedly mounted on top of sliding nut 506 and is used to connect sliding nut 506 and clamping seat 510;

[0050] The clamping seat 510 is fixedly mounted on the side wall of the mounting plate 509. It is V-shaped and used to clamp the plastic bottle body 40. The V-shaped structure can be adapted to bottles of different diameters.

[0051] When the bidirectional lead screw 501 rotates under the drive, the sliding nut 506 is threadedly connected to the bidirectional lead screw 501, and the guide slider 508 slides in the guide sliding groove 507, which restricts the rotation of the sliding nut 506. The sliding nut 506 moves linearly along the bidirectional lead screw 501. The two sliding nuts 506 respectively drive the corresponding mounting plate 509 and clamping seat 510 to move in opposite directions. The V-shaped clamping seat 510 contacts the plastic bottle body 40 through the inclined surfaces on both sides, automatically corrects the position of the bottle, and achieves centered clamping.

[0052] The drive motor 505 is used to drive the worm gear 504 to rotate;

[0053] Worm 504 meshes with turbine 502;

[0054] When the worm gear 504 rotates, it drives the worm wheel 502 to rotate. The worm wheel 502 is fixedly connected to the double-acting screw 501, thereby driving the double-acting screw 501 to rotate.

[0055] When the bidirectional lead screw 501 rotates, it drives the two sliding nuts 506 to move in opposite directions, and the sliding nuts 506 slide in the guide sliding groove 507 through the guide slider 508 when they move.

[0056] The drive motor 505 outputs torque to the worm gear 504, which transmits power to the turbine 502 through tooth meshing. Since the turbine 502 is fixed at the center of the double-acting screw 501, the double-acting screw 501 rotates synchronously with the turbine 502. The positive and negative threads of the double-acting screw 501 respectively engage with two sliding nuts 506. When rotating, the two sliding nuts 506 move in opposite directions. At the same time, the guide slider 508 slides in the guide sliding groove 507 to ensure that the sliding nuts 506 move smoothly and without deflection, thereby achieving precise opposing movement of the clamping end.

[0057] The drive guide end includes:

[0058] The support base 701 is fixedly mounted on the top of the fixed base 10, located directly above the first mounting groove 20, and provides a mounting frame for the cover mechanism 70;

[0059] Two second mounting slots 702 are formed on the two side walls of the support 701 and extend along the height direction of the support 701.

[0060] Two linear optical axes 703 are fixedly installed inside two second mounting slots 702, parallel to the second mounting slots 702, to provide guiding support;

[0061] Two sliding blocks 704 are slidably connected to two linear optical axes 703 and can slide up and down along the linear optical axes 703;

[0062] The lower pressure plate 705 is fixedly installed between the two sliding blocks 704, and its bottom is connected to the lower pressure cover sleeve 707 to transmit driving force.

[0063] The air spring 706 is fixedly mounted on the top of the support base 701, and its output end is fixed to the connecting lower pressure plate 705 to provide downward pressure power for the pressure plate.

[0064] After the air rod 706 is connected to the air source, its output end extends and retracts, driving the connecting lower pressure plate 705 to move up and down. Since the connecting lower pressure plate 705 is fixedly connected to two sliding blocks 704, the sliding blocks 704 slide along the linear optical axis 703. The linear optical axis 703 restricts the movement direction of the sliding blocks 704, ensuring that the connecting lower pressure plate 705 can only move in the vertical direction to avoid deviation. At the same time, the connecting lower pressure plate 705 drives the lower pressure cap sleeve 707 to move synchronously, providing stable guidance and power for the capping operation.

[0065] The pneumatic rod 706 is used to drive the lower pressure plate 705 to move.

[0066] When the connecting lower pressure plate 705 is displaced, it slides on two linear optical axes 703 through two sliding blocks 704;

[0067] When the connecting lower pressure plate 705 is displaced, it drives the lower pressure cap sleeve 707 to move synchronously and performs a capping operation on the bottle cap body 60.

[0068] The air spring 706 extends or retracts according to the control signal, driving the connecting lower pressure plate 705 to move vertically. During the movement of the connecting lower pressure plate 705, the two sliding blocks 704 slide on the corresponding linear optical axis 703. The rigid support of the linear optical axis 703 and the low friction of the sliding blocks 704 ensure that the connecting lower pressure plate 705 does not tilt or shake. The connecting lower pressure plate 705 drives the lower pressure cap sleeve 707 to accurately align with the bottle cap body 60 and apply downward pressure, smoothly pressing the bottle cap body 60 onto the bottle mouth of the plastic bottle body 40, completing the capping action.

[0069] Workflow

[0070] Initial placement: The operator places the plastic bottle body 40 on top of the placement plate 30 to ensure that the bottle body is initially stable; at the same time, the bottle cap body 60 is placed above the bottle mouth of the plastic bottle body 40 to complete the material preparation before capping.

[0071] Centering and clamping: When the centering and clamping mechanism 50 is activated, the drive motor 505 outputs power to drive the worm gear 504 to rotate within the mounting base 503. The worm gear 504, through meshing with the worm 502, drives the bidirectional lead screw 501 to rotate synchronously. The positive and negative threads of the bidirectional lead screw 501 respectively engage with two sliding nuts 506, causing the two sliding nuts 506 to move in opposite directions along the guide sliding groove 507 through the guide slider 508. This, in turn, drives the V-shaped clamping seat 510 on the mounting plate 509 to move closer to the plastic bottle body 40. Finally, the bottle body position is automatically corrected through the V-shaped surface, achieving centering and precise positioning of the plastic bottle body 40, ensuring that the bottle body is coaxial with the subsequent capping mechanism 70.

[0072] Capping operation: Start the capping mechanism 70. After the air rod 706 is connected to the air source, it outputs a downward driving force, which drives the connecting lower pressure plate 705 to move downward. The connecting lower pressure plate 705 is fixed in the second mounting groove 702 and slides vertically along the linear optical axis 703 through the sliding blocks 704 on both sides, ensuring that the movement trajectory is stable and without deviation. Simultaneously, the connecting lower pressure plate 705 drives the bottom lower pressure capping sleeve 707 to accurately align with the bottle cap body 60 and apply uniform pressure to press it onto the bottle mouth of the plastic bottle body 40, completing the sealing installation.

[0073] Reset and Unloading: After capping is completed, the air spring 706 retracts and resets, driving the connecting lower pressure plate 705 and the lower capping sleeve 707 to move upward to the initial position; at the same time, the drive motor 505 of the centering positioning clamping mechanism 50 reverses, and through the worm gear 504, the worm wheel 502 and the bidirectional lead screw 501, the two clamping seats 510 move in opposite directions to release the plastic bottle body 40; the operator removes the capped plastic bottle, the device returns to the initial state, and waits for the next operation.

[0074] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0075] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0076] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A plastic bottle capping device, characterized in that, include: The fixed base (10) is fixedly mounted on the support surface; The first mounting slot (20) is located at the center inside the fixed base (10); The placement plate (30) is located at the center inside the first mounting slot (20) and at the top; The plastic bottle body (40) is placed on top of the placement plate (30); The centering positioning clamping mechanism (50) is located inside the first mounting groove (20) and includes a driving end and two clamping ends. The driving end is used to drive the two clamping ends to move in opposite directions to achieve centering clamping and positioning of the plastic bottle body (40). The bottle cap body (60) is set on top of the plastic bottle body (40); The capping mechanism (70) is fixedly installed on the top of the fixed base (10) and includes a drive guide end and a lower capping sleeve (707). The drive guide end is used to drive the lower capping sleeve (707) to press down firmly and apply pressure to the cap body (60) to install the cap body (60) onto the plastic bottle body (40).

2. The plastic bottle capping device according to claim 1, characterized in that, The driver includes: A two-way lead screw (501) is installed inside the first mounting slot (20); The turbine (502) is fixedly installed at the center of the double-acting lead screw (501); Mounting bracket (503) is fixedly installed at the bottom of fixed base (10); The worm gear (504) is located inside the mounting base (503); The drive motor (505) is located on the back side of the worm (504), and its output end is connected to the worm (504); Guide sliding grooves (507) are formed on the front and back sidewalls of the first mounting groove (20).

3. A plastic bottle capping device according to claim 2, characterized in that, The clamping end includes: A sliding nut (506) is threaded onto a two-way lead screw (501); Two guide sliders (508) are fixedly mounted on the front and back sidewalls of the sliding nut (506) and are slidably connected to the two guide sliding grooves (507); Mounting plate (509) is fixedly mounted on top of sliding nut (506); The clamping seat (510) is fixedly installed on the side wall of the mounting plate (509) in a V-shape and is used to clamp the plastic bottle body (40).

4. A plastic bottle capping device according to claim 3, characterized in that, The drive motor (505) is used to drive the worm (504) to rotate; The worm (504) meshes with the turbine (502); When the worm (504) rotates, it drives the turbine (502) to rotate. The turbine (502) is fixedly connected to the double-acting screw (501), thereby driving the double-acting screw (501) to rotate. When the bidirectional lead screw (501) rotates, it drives the two sliding nuts (506) to move in opposite directions, and when the sliding nuts (506) move, they slide in the guide sliding groove (507) through the guide slider (508).

5. A plastic bottle capping device according to claim 4, characterized in that, The drive guide end includes: The support base (701) is fixedly mounted on the top of the fixed base (10); Two second mounting slots (702) are formed on the two side walls of the support base (701); Two linear optical axes (703) are fixedly installed inside two second mounting slots (702); Two sliding blocks (704) are slidably connected to two linear optical axes (703); The connecting lower pressure plate (705) is fixedly installed between two sliding blocks (704), and its bottom is connected to the lower pressure cover sleeve (707); The air rod (706) is fixedly installed on the top of the support base (701), and its output end is fixed to the connecting lower pressure plate (705).

6. A plastic bottle capping device according to claim 5, characterized in that, The pneumatic rod (706) is used to drive the connecting lower pressure plate (705) to move; When the connecting lower pressure plate (705) is displaced, it slides on two linear optical axes (703) through two sliding blocks (704); When the connecting lower pressure plate (705) is displaced, it drives the lower pressure cap sleeve (707) to move synchronously and performs a capping operation on the bottle cap body (60).

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