A servo positioning device for a blow molding machine

Abstract

This utility model relates to the field of blow molding machine technology and discloses a servo positioning device for blow molding machines, including a worktable, a transport track, and a mold. The transport track is installed above the worktable, and a preform holder is installed inside the transport track. The preform holder is connected to a third chain tooth via a first bearing, and the third chain tooth is located below the transport track. A mold is installed on the right side of the outer wall of the transport track, and a processing mechanism is installed on the outside of the mold. The processing mechanism is connected to the top of the worktable via a support frame. A preform is disposed inside the preform holder. The processing mechanism includes a rotating device and a sliding device. This utility model is applicable to irregularly shaped bottles, square bottles, and products with strict requirements on the orientation of the bottle cap and bottle body. It effectively prevents misalignment between the bottle cap and bottle body, improves production efficiency, stabilizes product quality, and reduces labor costs.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, specifically to a blow molding machine servo positioning device. Background Technology

[0002] As a device for making bottles, the conventional production process of a blow molding machine is as follows: First, the preform is placed on a preform holder. Then, the preform holder and the preform are fed to a heating device via a feeding track for heating, followed by positioning by a positioning device. After that, it is sent to the molding device, where the front mold and the rear mold are connected to form a molding cavity. Then, through an air blowing device, usually an air tube inserted into the preform, the preform is expanded and deformed by the force of the air within the molding cavity. Due to the constraint of the inner wall of the molding cavity, the preform will be deformed into a bottle shape corresponding to the shape of the inner wall of the molding cavity designed by the producer. Finally, the front mold and the rear mold of the blow molding machine separate, the molding cavity opens, and the conveying device of the blow molding machine can then transport the molded bottle to the next process.

[0003] A search revealed Chinese Patent Publication No. CN 222022177 U, published on November 19, 2024, which discloses a bottle mouth positioning device for a blow molding machine. The document states that "a counter is provided at the top of the counter, a first positioning ring is provided above the positioning hole, and a second positioning ring is fixedly connected to one side of the positioning hole." The device is suitable for making bottles with relatively simple styles, and the processing of it is prone to misalignment between the bottle cap and the bottle body. In view of this, in-depth research was conducted to address the above problems, which led to this case. Utility Model Content

[0004] The purpose of this invention is to provide a servo positioning device for a blow molding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a servo positioning device for a blow molding machine, comprising a worktable, a transport track, and a mold. The transport track is installed above the worktable, and a preform holder is installed inside the transport track. The preform holder is connected to a third chain tooth via a first bearing, and the third chain tooth is located below the transport track. A mold is installed on the right side of the outer wall of the transport track, and a processing mechanism is installed on the outside of the mold. The processing mechanism is connected to the top of the worktable via a support frame. A preform is disposed inside the preform holder.

[0006] The processing mechanism includes a rotating device and a sliding device. Rotating devices are installed on both the inner and outer sides of the transport track. The upper part of the outer rotating device is connected to the sliding device via a fixed frame, and the lower part of the rotating device is connected to the upper part of the worktable via a support frame. The rotating device includes a servo motor, a turntable, and a moving groove. A turntable is provided on the inner side of the transport track. Multiple moving grooves are provided on the outer wall of the turntable, and a servo motor is installed below the turntable. A first chain is provided on the outer side of multiple third chain teeth. First chain teeth are installed on both sides of the first chain. The lower part of the first chain teeth is connected to the support frame via a second bearing. A second chain is installed on the outer side of the left first chain tooth, and a second chain tooth is installed on the other side inside the second chain. A reduction motor is installed below the second chain tooth.

[0007] Preferably, the rotating device further includes pressure rollers and a mounting plate. Multiple pressure rollers are provided between the first chain teeth on both sides. The multiple pressure rollers are located on the inner side of the first chain, and the lower part of the pressure rollers is connected to the mounting plate through a third bearing. A first cylinder is installed on the outer side of the mounting plate.

[0008] Preferably, the sliding device includes a fixed plate, a first slider, and a fixed rod. The fixed plate is provided on the outer side of the transport track. The first slider is installed on both sides below the fixed plate and is located on the outer wall of the fixed rod. The fixed rod is installed above the fixed frame, and the lower part of the fixed frame is installed above the support frame. A linear module is installed above the fixed plate, and a second slider is installed above the linear module. A positioning mounting plate is installed on the outer wall of the second slider. Multiple positioning blocks are installed above the positioning mounting plate, and multiple second slots are provided on the inner wall of the positioning mounting plate. A second cylinder is installed on the outer wall of the fixed plate and is installed above the fixed frame.

[0009] Preferably, the output end of the servo motor is fixedly connected to the turntable, the turntable and the moving groove are integrated, the first chain is connected to the first chain tooth and the pressure roller by chain teeth, and the first chain tooth is rotatably connected to the first bearing.

[0010] Preferably, the first chain tooth on the left is divided into two toothed discs, the first chain tooth on the lower left is connected to the second chain by a chain tooth connection, and the second chain tooth is fixedly connected to the output end of the reduction motor.

[0011] Preferably, the pressure roller and the second bearing are rotatably connected, and the mounting plate and the output end of the first cylinder are fixedly connected.

[0012] Preferably, the fixing plate and the first slider are fixedly connected, and the first slider and the fixing rod are slidably connected.

[0013] Preferably, the linear module and the second slider are slidably connected, and the second slider and the positioning mounting plate are fixedly connected.

[0014] Preferably, the outer side of the preform is provided with a first slot, and the first slot and the positioning block are engaged.

[0015] Preferably, the second slot is provided with an arc edge, and the second slot and the preform holder are correspondingly provided.

[0016] Compared with existing technologies, the beneficial effects of this utility model are:

[0017] By setting up a rotating and sliding device, the preform is first placed inside the preform holder, ensuring that the first slots on the outer side of the preform are aligned. The servo motor is started to drive the turntable to rotate, and the preform holder is moved along the transport track by the moving groove set on the outer wall of the turntable, transporting the preform holder containing the preform to the positioning area;

[0018] Subsequently, the second cylinder is activated to push the fixing plate to slide. The first slider connected to it slides along the outer wall of the fixing rod to ensure straightness and stability during the sliding process. When the positioning block on the positioning mounting plate contacts the outer wall of the preform and the preform seat enters the inner side of the first slot, the initial positioning is completed.

[0019] Next, the first cylinder is activated, causing the mounting plate to move downwards, bringing the pressure roller into contact with the first chain. At this time, the first chain engages with the third chain tooth connected to the preform holder in the positioning area. The reduction motor is then activated, causing the pressure roller to rotate. This rotation, through the linkage between the second chain and the first chain, causes the third chain tooth to rotate, thereby driving the preform holder and the preform to rotate synchronously.

[0020] With this structural design, the first slot of the preform can be precisely engaged by the positioning block, which is especially suitable for irregularly shaped bottles, square bottles and products with strict requirements on the orientation of the bottle cap and the bottle body. It effectively prevents misalignment of the bottle cap and the bottle body, improves production efficiency and stabilizes product quality.

[0021] Subsequently, the servo motor and geared motor are stopped, causing the preform to pause rotation. Simultaneously, the first cylinder resets, the pressure roller disengages from the first chain, and the chain drive power transmission is released, achieving precise positioning and stopping of the preform.

[0022] Finally, the linear module is activated, which drives the second slider and its connected positioning mounting plate to slide. With the help of the cooperation between the first slot and the preform holder, the preform in the preform holder is transported to the mold, completing the blow molding and shaping operation.

[0023] The entire workflow achieves integrated operation of automatic preform feeding, orientation, clamping, positioning, conveying and shaping, which significantly reduces labor costs and improves production efficiency and product consistency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the processing mechanism of this utility model;

[0027] Figure 3 This is a partial bottom-view three-dimensional structural diagram of the rotating device of this utility model;

[0028] Figure 4 This is a partial rear-view three-dimensional structural diagram of the sliding device of this utility model;

[0029] Figure 5 This is a partial top view of the three-dimensional structure of the rotating device of this utility model.

[0030] In the diagram: 1. Workbench; 2. Transport track; 3. Mold; 4. Rotating device; 5. Sliding device; 6. Preform holder; 7. Third chain tooth; 8. Support frame; 9. Fixing frame; 10. Preform; 401. Servo motor; 402. Turntable; 403. Moving groove; 404. First chain; 405. First chain tooth; 406. Second chain; 407. Second chain tooth; 408. Gear motor; 409. Pressure roller; 410. Mounting plate; 411. First cylinder; 501. Fixing plate; 502. First slider; 503. Fixing rod; 504. Base plate; 505. Second cylinder; 506. Linear module; 507. Second slider; 508. Positioning mounting plate; 509. Positioning block; 510. First slot. Detailed Implementation

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] Please see Figure 1-5 This utility model provides a technical solution for a servo positioning device for a blow molding machine: A servo positioning device for a blow molding machine includes a worktable 1, a transport track 2, and a mold 3. The transport track 2 is installed above the worktable 1, and a preform holder 6 is installed inside the transport track 2. The preform holder 6 is connected to a third chain tooth 7 below the worktable 1 via a first bearing, and the third chain tooth 7 is located below the transport track 2. The mold 3 is installed on the right side of the outer wall of the transport track 2, and a processing mechanism is installed on the outside of the mold 3. The processing mechanism is connected to the top of the worktable 1 below the worktable 1 via a support frame 8. A preform 10 is provided inside the preform holder 6.

[0035] The processing mechanism includes a rotating device 4 and a sliding device 5. The rotating device 4 is installed on both the inner and outer sides of the transport track 2. The upper part of the outer rotating device 4 is connected to the sliding device 5 through a fixed frame 9. The lower part of the rotating device 4 is connected to the upper part of the worktable 1 through a support frame 8. The rotating device 4 includes a servo motor 401, a turntable 402 and a moving groove 403. The inner side of the transport track 2 is provided with a turntable 402. The outer wall of the turntable 402 is provided with multiple moving grooves 403. The servo motor 401 is installed below the turntable 402. The outer side of multiple third chain teeth 7 is provided with a first chain 404. The two sides of the first chain 404 are provided with first chain teeth 405. The lower part of the first chain teeth 405 is connected to the support frame 8 through a second bearing. The outer side of the left first chain tooth 405 is provided with a second chain 406. The other side of the inner side of the second chain 406 is provided with a second chain tooth 407. The lower part of the second chain tooth 407 is provided with a reduction motor 408.

[0036] The rotating device 4 also includes a pressure roller 409 and a mounting plate 410. Multiple pressure rollers 409 are provided between the first chain teeth 405 on both sides. The multiple pressure rollers 409 are located on the inner side of the first chain 404, and the lower part of the pressure roller 409 is connected to the mounting plate 410 through a third bearing. A first cylinder 411 is installed on the outer side of the mounting plate 410.

[0037] The sliding device 5 includes a fixed plate 501, a first slider 502, and a fixed rod 503. The fixed plate 501 is provided on the outer side of the transport track 2. The first slider 502 is installed on both sides below the fixed plate 501 and is located on the outer wall of the fixed rod 503. The fixed rod 503 is installed above the fixed frame 9 and the lower part of the fixed frame 9 is installed above the support frame 8. A linear module 506 is installed above the fixed plate 501 and a second slider 507 is installed above the linear module 506. A positioning mounting plate 508 is installed on the outer wall of the second slider 507. Multiple positioning blocks 509 are installed above the positioning mounting plate 508 and multiple second slots 510 are provided on the inner wall of the positioning mounting plate 508. A second cylinder 505 is installed on the outer wall of the fixed plate 501 and is installed above the fixed frame 9.

[0038] The output end of the servo motor 401 is fixedly connected to the turntable 402. The turntable 402 and the moving groove 403 are integrated. The first chain 404 is connected to the first chain tooth 405 and the pressure roller 409 by chain teeth. The first chain tooth 405 is rotatably connected to the first bearing.

[0039] The first chain tooth 405 on the left is divided into two toothed discs. The first chain tooth 405 on the lower left is connected to the second chain 406 by chain teeth. The second chain tooth 407 is fixedly connected to the output end of the geared motor 408.

[0040] The pressure roller 409 is rotatably connected to the second bearing, and the mounting plate 410 is fixedly connected to the output end of the first cylinder 411.

[0041] The fixed plate 501 and the first slider 502 are fixedly connected, and the first slider 502 and the fixed rod 503 are slidably connected, so that the sliding device 5 can slide along the fixed rod 503 to adjust its position.

[0042] The linear module 506 and the second slider 507 are slidably connected, while the second slider 507 and the positioning mounting plate 508 are fixedly connected.

[0043] The preform 10 has a first slot on its outer side, and the first slot is engaged with the positioning block 509 to ensure accurate positioning of the equipment.

[0044] The second slot 510 has an arc edge, and the second slot 510 and the preform holder 6 are correspondingly positioned.

[0045] Working principle:

[0046] First, place the preform 10 into the preform holder 6, ensuring that the first slot 510 on the outer side of the preform 10 faces the same direction. Start the servo motor 401 to drive the turntable 402 to rotate. The moving groove 403 on the outer wall of the turntable 402 drives the preform holder 6 to move along the transport track 2, transporting the preform holder 6 containing the preform to the positioning area.

[0047] Subsequently, the second cylinder 505 is activated to push the fixed plate 501 to slide. The first slider 502 connected to it slides along the outer wall of the fixed rod 503 to ensure straightness and stability during the sliding process. When the positioning block 509 on the positioning mounting plate 508 contacts the outer wall of the preform 10 and the preform seat 6 enters the inner side of the first slot 510, the initial positioning is completed.

[0048] Next, the first cylinder 411 is activated, causing the mounting plate 410 to move downwards, bringing the pressure roller 409 into contact with the first chain 404. At this time, the first chain 404 engages with the third chain tooth 7 connected to the preform holder 6 in the positioning area. The reduction motor 408 is activated, causing the pressure roller 409 to rotate. This rotation is achieved through the linkage of the second chain 406 and the first chain 404 with the third chain tooth 7, thereby causing the preform holder 6 and the preform 10 to rotate synchronously.

[0049] With this structural design, the first slot of the preform 10 can be precisely engaged by the positioning block 509, which is particularly suitable for irregularly shaped bottles, square bottles and products with strict requirements on the direction of the bottle cap and the bottle body, effectively preventing misalignment of the bottle cap and the bottle body, improving production efficiency and stabilizing product quality.

[0050] Subsequently, the servo motor 401 and the geared motor 408 are stopped, causing the preform 10 to pause rotation. At the same time, the first cylinder 411 is reset, the pressure roller 409 disengages from the first chain 404, and the chain drive power transmission is released, achieving precise positioning and stopping of the preform.

[0051] Finally, the linear module 506 is activated, which drives the second slider 507 and its connected positioning mounting plate 508 to slide. With the help of the cooperation between the first slot 510 and the preform holder 6, the preform 10 in the preform holder 6 is transported to the mold 3 to complete the blow molding and shaping operation.

[0052] The entire workflow achieves integrated operation of automatic preform feeding, orientation, clamping, positioning, conveying and shaping, which significantly reduces labor costs and improves production efficiency and product consistency.

[0053] Although embodiments of the present utility 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 utility, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A servo positioning device for a blow molding machine, comprising a worktable (1), a transport track (2), and a mold (3), characterized in that: A transport track (2) is installed above the workbench (1). A preform holder (6) is installed inside the transport track (2). The preform holder (6) is connected to a third chain tooth (7) via a first bearing. The third chain tooth (7) is located below the transport track (2). A mold (3) is installed on the right side of the outer wall of the transport track (2). A processing mechanism is installed on the outside of the mold (3). The processing mechanism is connected to the top of the workbench (1) via a support frame (8). A preform (10) is provided inside the preform holder (6). The processing mechanism includes a rotating device (4) and a sliding device (5). Rotating devices (4) are installed on both the inner and outer sides of the transport track (2). The upper part of the outer rotating device (4) is connected to the sliding device (5) via a fixed frame (9). The lower part of the rotating device (4) is connected to the upper part of the worktable (1) via a support frame (8). The rotating device (4) includes a servo motor (401), a turntable (402), and a moving groove (403). The inner side of the transport track (2) is provided with a turntable (402), and the outer wall of the turntable (402) is provided with multiple moving grooves. 403), and a servo motor (401) is installed below the turntable (402). A first chain (404) is provided on the outer side of the plurality of third chain teeth (7). First chain teeth (405) are installed on both sides of the first chain (404). The lower part of the first chain teeth (405) is connected to the support frame (8) through a second bearing. A second chain (406) is installed on the outer side of the first chain teeth (405) on the left side. A second chain tooth (407) is installed on the other side inside the second chain (406). A reduction motor (408) is installed below the second chain tooth (407).

2. The servo positioning device for a blow molding machine according to claim 1, characterized in that: The rotating device (4) further includes pressure rollers (409) and mounting plate (410). Multiple pressure rollers (409) are provided between the first chain teeth (405) on both sides. The multiple pressure rollers (409) are located inside the first chain (404), and the pressure rollers (409) are connected to the mounting plate (410) below through a third bearing. A first cylinder (411) is installed on the outside of the mounting plate (410).

3. The servo positioning device for a blow molding machine according to claim 2, characterized in that: The sliding device (5) includes a fixed plate (501), a first slider (502), and a fixed rod (503). The fixed plate (501) is provided on the outer side of the transport track (2). The first sliders (502) are installed on both sides below the fixed plate (501), and the first sliders (502) are located on the outer wall of the fixed rod (503). The fixed rod (503) is installed above the fixed frame (9), and the lower part of the fixed frame (9) is installed above the support frame (8). The upper part of the fixed plate (501) is above the fixed frame (501). A linear module (506) is installed, a second slider (507) is installed above the linear module (506), a positioning mounting plate (508) is installed on the outer wall of the second slider (507), a plurality of positioning blocks (509) are installed above the positioning mounting plate (508), and a plurality of second slots (510) are provided on the inner wall of the positioning mounting plate (508). A second cylinder (505) is installed on the outer wall of the fixing plate (501), and the second cylinder (505) is installed above the fixing frame (9).

4. The servo positioning device for a blow molding machine according to claim 3, characterized in that: The output end of the servo motor (401) is fixedly connected to the turntable (402), the turntable (402) and the moving groove (403) are integrated, the first chain (404) is connected to the first chain tooth (405) and the pressure roller (409) by chain teeth, and the first chain tooth (405) is rotatably connected to the first bearing.

5. The servo positioning device for a blow molding machine according to claim 4, characterized in that: The first chain tooth (405) on the left is divided into two toothed discs. The first chain tooth (405) on the lower left is connected to the second chain (406) by chain teeth. The second chain tooth (407) is fixedly connected to the output end of the geared motor (408).

6. The servo positioning device for a blow molding machine according to claim 5, characterized in that: The pressure roller (409) is rotatably connected to the second bearing, and the mounting plate (410) is fixedly connected to the output end of the first cylinder (411).

7. A servo positioning device for a blow molding machine according to claim 6, characterized in that: The fixed plate (501) and the first slider (502) are fixedly connected, and the first slider (502) and the fixed rod (503) are slidably connected.

8. A servo positioning device for a blow molding machine according to claim 7, characterized in that: The linear module (506) and the second slider (507) are slidably connected, and the second slider (507) and the positioning mounting plate (508) are fixedly connected.

9. A servo positioning device for a blow molding machine according to claim 8, characterized in that: The preform (10) has a first slot on its outer side, and the first slot is engaged with the positioning block (509).

10. A servo positioning device for a blow molding machine according to claim 9, characterized in that: The second slot (510) is set with an arc edge, and the second slot (510) and the preform holder (6) are set accordingly.

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