A bottle preform synchronous uniform heating link

Abstract

The utility model relates to the technical field of medicine bottle manufacturing mainly discloses a bottle blank synchronous even heating link, it includes drive disc group, the first chain group is equipped with to drive disc group outer disc, wherein, the first chain group head and tail are connected, and the sleeve column is set up on it, second chain group, it sets up in the first chain group one side, and is engaged with the sleeve column, heating assembly, heating assembly sets up in the first chain group and sleeve column outside, the utility model solves the defect that the medical medicine bottle after forming appears uneven wall thickness, poor tightness etc.

Description

Technical Field

[0001] This utility model relates to the technical field of medicine bottle manufacturing, and in particular to a synchronous and uniform heating process for bottle preforms. Background Technology

[0002] In the manufacturing of large medical plastic bottles, the uniformity and adequacy of the preform heating process directly determine the quality of subsequent bottle molding. Existing preform heating equipment is mostly designed for small preforms, generally employing a linear transmission link with one or two heating chambers. This has two major drawbacks: First, large preforms have thicker walls and longer heat conduction paths, while the linear heating link has a shorter path and insufficient effective heating time, easily leading to delamination problems such as "overheating and softening of the outer layer while the inner layer does not reach the process temperature," affecting bottle strength. Second, existing equipment lacks a stable rotary transmission structure; the preform is mostly heated statically or through simple translation, easily creating radial heating blind spots. Furthermore, the link support frame is often a simple splicing type, prone to displacement during chain sliding, causing preform positioning deviations and further exacerbating uneven heating.

[0003] The aforementioned problems can lead to defects such as uneven wall thickness and poor sealing in the molded medical bottles, making them unable to meet the stringent requirements of medical applications for leak-proof and sterilization-resistant bottles. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that existing manufacturing devices will cause defects such as uneven wall thickness and poor sealing in the formed medical bottles.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a synchronous and uniform heating link for bottle preforms, which includes a drive disk group, and a first chain group is provided on the outer disk of the drive disk group; wherein, the first chain group is connected end to end and a sleeve post is provided on it; a second chain group is provided on one side of the first chain group and engages with the sleeve post; a heating component is provided outside the first chain group and the sleeve post.

[0006] In a preferred embodiment of the preform synchronous uniform heating link described in this utility model, it further includes a mounting frame connected end to end, and the first chain group and the second chain group are both slidably disposed on the mounting frame.

[0007] In a preferred embodiment of the preform synchronous uniform heating link of this utility model: the mounting frame includes a first slide, a second slide, a third slide and a fourth slide arranged in parallel; the ends of the first slide and the second slide are connected by a first arc frame, the ends of the second slide and the third slide are connected by a first docking frame, the ends of the third slide and the fourth slide are connected by a second arc frame, and the ends of the fourth slide and the first slide are connected by a second docking frame.

[0008] In a preferred embodiment of the preform synchronous and uniform heating link of this utility model: a first splicing frame is arranged parallel to the first slide and the second slide, and the first splicing frame forms a first slide groove and a second slide groove with the first slide and the second slide on both sides; a second splicing frame is arranged parallel to the third slide and the fourth slide, and the second splicing frame forms a third slide groove and a fourth slide groove with the third slide and the fourth slide on both sides; the first slide groove passes through the first arc frame and communicates with the second slide groove, the second slide groove passes through the first docking frame and communicates with the third slide groove, the third slide groove passes through the second arc frame and communicates with the fourth slide groove, and the fourth slide groove passes through the second docking frame and communicates with the first slide groove.

[0009] In a preferred embodiment of the preform synchronous uniform heating link of this utility model: the drive disk group includes a first turntable, a second turntable and a third turntable. The first turntable is rotatably disposed within the first arc frame and the second arc frame. The second turntable is rotatably disposed at the connecting corner of the first docking frame and the second and third slides. The third turntable is rotatably disposed at the connecting corner of the first slide and the fourth slide.

[0010] In a preferred embodiment of the preform synchronous uniform heating link of this utility model: the first chain group includes several sets of bushing assemblies connected to each other, each bushing assembly includes a mounting sleeve, the mounting sleeves are rotatably connected by two sets of chain plates, and the sleeve post is rotatably inserted into the mounting sleeve.

[0011] In a preferred embodiment of the preform synchronous uniform heating link of this utility model: an insertion hole is formed between two adjacent sets of mounting sleeves and chain plates, and the toothed blocks of the first turntable, the second turntable and the third turntable are movably inserted into the insertion hole.

[0012] In a preferred embodiment of the preform synchronous and uniform heating link of this utility model: the mounting frame is fixedly connected to a clamping plate along its bottom end, and the second chain group is slidably embedded in the mounting groove formed between the clamping plate and the mounting frame.

[0013] In a preferred embodiment of the preform synchronous and uniform heating link of this utility model: a toothed disc is also fixedly connected to the bottom end of the sleeve column, and the toothed disc is meshed with the second chain group.

[0014] In a preferred embodiment of the preform synchronous uniform heating link of this utility model: the heating component is provided in several groups, including a shell and heating tubes. Several groups of heating tubes are arranged longitudinally and are fixedly connected by a mounting plate. A bracket is fixedly connected between the mounting plate and the inner wall of the shell. The first splicing frame and the second splicing frame are located in the plane where the heating tubes are located, and the first chain group is located on both sides of the heating tubes.

[0015] The beneficial effects of this utility model are as follows: This heating system for large medical plastic preforms is specifically optimized to address the pain points of heating large preforms, effectively solving the problems of insufficient and uneven heating in existing equipment. It uses a first chain assembly, roughly W-shaped with connected ends, combined with multiple heating components to extend the residence path and effective heating time of the large preform in the heating area. The progressive heating design of the multiple heating components allows heat to fully penetrate the inner layer of the large preform, preventing delamination issues such as overheating of the outer layer and insufficient heating of the inner layer, ensuring sufficient overall heating of the preform.

[0016] Meanwhile, the meshing structure between the second chain group and the toothed disc at the bottom of the sleeve column can drive the preform to rotate stably during the heating process, eliminating the radial heating blind zone and ensuring uniform temperature of the preform over 360°. The precisely matched grooves and high-strength support structure on the mounting frame can ensure the stability of the transmission process of the first and second chain groups, avoid positioning deviation of the preform due to link offset, and further improve the heating uniformity.

[0017] Ultimately, the large preform heated in this process meets the stringent temperature requirements of subsequent molding processes, reducing defects such as uneven wall thickness and poor sealing in the molded medical bottles. This ensures that the product meets the standards for leak-proof and sterilization resistance in medical settings. At the same time, the overall structure is stable and durable, adaptable to continuous production needs, and improves the manufacturing efficiency and quality stability of large medical plastic bottles. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein: Figure 1 The diagram shows the structure of the preform synchronous uniform heating link; Figure 2 The diagram shows the connection of the drive disk group, the first chain group, and the second chain group in the synchronous and uniform heating link for the preform. Figure 3 The diagram shows the positional distribution of the first and second chain groups in the synchronous and uniform heating link for the preform. Figure 4 This diagram shows the installation schematic of the second chain group in the preform synchronous uniform heating link; Figure 5 A schematic diagram of the sleeve installation of the preform synchronous uniform heating link is shown; Figure 6 The diagram shows the structure of the heating components in the synchronous and uniform heating link for the preform. Detailed Implementation

[0019] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0021] Reference Figures 1-6 This embodiment provides a synchronous and uniform heating link for bottle preforms, the core of which is to solve the problem of insufficient and uneven heating of large bottle preforms.

[0022] This link specifically includes a drive disk assembly 100, and the outer disk of the drive disk assembly 100 is provided with a first chain assembly 200, which provides the main transmission power for the bottle preform; wherein, the first chain assembly 200 is connected end to end to form a closed-loop transmission path, and sleeve posts A are evenly arranged on it. Sleeve posts A are used to invert and fit large bottle preforms to ensure that the bottle preforms are stably fixed during transmission.

[0023] The second chain group 300 is located on one side of the first chain group 200 and engages with the sleeve A. By fixing its engagement with the sleeve A or moving in the opposite direction, the sleeve A is rotated to achieve 360° heating of the preform.

[0024] Heating component 400 is disposed outside the first chain group 200 and sleeve column A to form a surrounding heating space, providing a continuous heat source for large preforms.

[0025] It also includes a mounting bracket 500 that connects the two ends. The mounting bracket 500 serves as a support frame for the overall structure, bearing the weight of the first chain group 200, the second chain group 300, and the heating component 400.

[0026] Furthermore, the first chain group 200 is slidably mounted on the mounting frame 500, and the second chain group 300 can be either movable or fixed, both of which ensure smooth link transmission.

[0027] Specifically, the mounting frame 500 includes a first slide 501, a second slide 502, a third slide 503, and a fourth slide 504 arranged in parallel. All four slides are made of high-strength metal to prevent deformation after long-term support of large preforms.

[0028] The ends of the first slide 501 and the second slide 502 are connected by the first arc frame 505. The ends of the second slide 502 and the third slide 503 are connected by the first docking frame 506. The ends of the third slide 503 and the fourth slide 504 are connected by the second arc frame 507. The ends of the fourth slide 504 and the first slide 501 are connected by the second docking frame 508. The combined design of the arc frame and the docking frame makes the mounting frame 500 form a path that adapts to the "W" shaped drive of the first chain group 200, thus extending the heating stroke of the large preform.

[0029] Furthermore, a first splicing frame 509 is arranged parallel to the first slide 501 and the second slide 502. The first splicing frame 509 forms a first groove B1 and a second groove B2 with the first slide 501 and the second slide 502 on both sides. The width of the groove is precisely matched with the thickness of the components of the first chain group 200 to prevent the chain group from shifting when it slides.

[0030] A second splicing frame 510 is arranged parallel to the third slide 503 and the fourth slide 504. The second splicing frame 510 forms a third slide groove B3 and a fourth slide groove B4 with the third slide 503 and the fourth slide 504 on both sides, which in turn ensures the stability of the chain drive.

[0031] The first slide rail B1 passes through the first arc frame 505 and connects to the second slide rail B2. The second slide rail B2 passes through the first docking frame 506 and connects to the third slide rail B3. The third slide rail B3 passes through the second arc frame 507 and connects to the fourth slide rail B4. The fourth slide rail B4 passes through the second docking frame 508 and connects to the first slide rail B1. Through the fully closed-loop connection of the slide rails, the continuous transmission of the first chain group 200 is realized, ensuring that large preforms can circulate through the heating area and meet the long-term heating requirements.

[0032] The drive disk assembly 100 includes a first turntable 101, a second turntable 102, and a third turntable 103. All three turntables are driven by servo motors, and their rotation speed can be precisely controlled according to the heating process of large preforms. The first turntable 101 is rotatably set within the first arc frame 505 and the second arc frame 507, adapting to the steering transmission at the arc frame. The second turntable 102 is rotatably set at the connecting corner of the first docking frame 506 and the second slide 502 and the third slide 503. The third turntable 103 is rotatably set at the connecting corner of the first slide 501 and the fourth slide 504. Through the cooperation of multiple turntables, the first chain assembly 200 can be driven at a constant speed in both steering and straight sections.

[0033] The first chain group 200 includes several sets of bushing assemblies 201 that are interconnected. The number of bushing assemblies 201 can be increased or decreased according to production efficiency requirements. Each bushing assembly 201 includes a mounting sleeve 201a. The mounting sleeves 201a are rotatably connected by two sets of chain plates 201b. The chain plates 201b are made of wear-resistant stainless steel to extend their service life. The sleeve post A is rotatably inserted into the mounting sleeve 201a, and a bearing is provided between the sleeve post A and the mounting sleeve 201a to reduce rotational friction and ensure stable rotation of the preform.

[0034] An insertion hole is formed between two adjacent sets of mounting sleeves 201a and chain plates 201b. The tooth blocks of the first turntable 101, the second turntable 102 and the third turntable 103 are movably inserted into the insertion hole. The meshing depth between the tooth block and the insertion hole is two-thirds of the height of the tooth block, ensuring sufficient transmission power, avoiding slippage, and ensuring that the first chain group 200 moves at a constant speed.

[0035] The mounting bracket 500 is fixedly connected to a clamping plate 301 at its bottom end. The distance between the clamping plate 301 and the mounting bracket 500 is adapted to the thickness of the second chain group 300. The second chain group 300 is slidably embedded in the mounting groove formed between the clamping plate 301 and the mounting bracket 500. The mounting groove limits the second chain group 300 and prevents it from shifting up and down during transmission.

[0036] The bottom end of the sleeve A is also fixedly connected to a toothed disc A1. The number of teeth on the toothed disc A1 matches the number of chain teeth on the second chain group 300, and the toothed disc A1 is engaged with the second chain group 300.

[0037] When the second chain group 300 is in a movable configuration, it also needs to be equipped with a turntable to drive its movement. The reverse movement of the second chain group 300 drives the toothed disc A1 to rotate, thereby causing the sleeve column A and the large preform above it to rotate synchronously, achieving heating without dead angles. When the second chain group 300 is in a fixed configuration, the second chain group 300 remains stationary, but drives the toothed disc A1 to rotate through the relative sliding between it and the first chain group 200.

[0038] Furthermore, the heating assembly 400 is provided with several groups, the number of groups being adapted to the heating path length of the first chain group 200. It includes a shell 401 and heating tubes 402. The shell 401 is made of heat-insulating material to reduce heat loss. Several groups of heating tubes 402 are arranged longitudinally, and the power of the heating tubes 402 can be zoned and adjusted to meet the temperature requirements of different heating stages of large preforms.

[0039] The heating element 402 is fixedly connected by the mounting plate 402a. A bracket 401a is fixedly connected between the mounting plate 402a and the inner wall of the outer shell 401. The bracket 401a has a triangular support structure, which enhances the stability of the mounting plate 402a and prevents the heating element 402 from shifting due to its own weight.

[0040] The first splicing frame 509 and the second splicing frame 510 are located in the plane of the heating tube 402, so that the large preform on the sleeve column A is in the core heating area of ​​the heating tube 402. The first chain group 200 is located on both sides of the heating tube 402, ensuring that the preforms on both chain groups can receive uniform heat, further ensuring the sufficient heating of the large preform.

[0041] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A synchronous and uniform heating chain for bottle preforms, characterized in that: include, A drive disk assembly (100) has a first chain assembly (200) on its outer disk. The first chain group (200) is connected end to end and is provided with a sleeve post (A). The second chain group (300) is disposed on one side of the first chain group (200) and engages with the sleeve (A); Heating assembly (400) is disposed outside the first chain group (200) and the sleeve (A).

2. The preform synchronous and uniform heating chain according to claim 1, characterized in that: It also includes a mounting bracket (500) with the ends connected, and the first chain group (200) and the second chain group (300) are both slidably disposed on the mounting bracket (500).

3. The preform synchronous and uniform heating chain according to claim 2, characterized in that: The mounting bracket (500) includes a first slide (501), a second slide (502), a third slide (503), and a fourth slide (504) arranged in parallel. The ends of the first carriage (501) and the second carriage (502) are connected by a first arc frame (505), the ends of the second carriage (502) and the third carriage (503) are connected by a first docking frame (506), the ends of the third carriage (503) and the fourth carriage (504) are connected by a second arc frame (507), and the ends of the fourth carriage (504) and the first carriage (501) are connected by a second docking frame (508).

4. The preform synchronous and uniform heating chain according to claim 3, characterized in that: A first splicing frame (509) is provided in parallel between the first carriage (501) and the second carriage (502), and a first groove (B1) and a second groove (B2) are formed between the first splicing frame (509) and the first carriage (501) and the second carriage (502) on both sides. A second splicing frame (510) is arranged in parallel between the third slide (503) and the fourth slide (504), and the second splicing frame (510) forms a third slide groove (B3) and a fourth slide groove (B4) with the third slide (503) and the fourth slide (504) on both sides. The first slide (B1) passes through the first arc frame (505) and communicates with the second slide (B2). The second slide (B2) passes through the first docking frame (506) and communicates with the third slide (B3). The third slide (B3) passes through the second arc frame (507) and communicates with the fourth slide (B4). The fourth slide (B4) passes through the second docking frame (508) and communicates with the first slide (B1).

5. The preform synchronous and uniform heating chain according to claim 3 or 4, characterized in that: The drive disk assembly (100) includes a first turntable (101), a second turntable (102), and a third turntable (103). The first turntable (101) is rotatably disposed within the first arc frame (505) and the second arc frame (507). The second turntable (102) is rotatably disposed at the connecting corner of the first docking frame (506) and the second slide (502) and the third slide (503). The third turntable (103) is rotatably disposed at the connecting corner of the first slide (501) and the fourth slide (504).

6. The preform synchronous and uniform heating chain according to claim 5, characterized in that: The first chain group (200) includes several sets of bushing assemblies (201) connected to each other. Each bushing assembly (201) includes a mounting sleeve (201a). The mounting sleeves (201a) are rotatably connected by two sets of chain plates (201b). The sleeve post (A) is rotatably inserted into the mounting sleeve (201a).

7. The preform synchronous and uniform heating chain according to claim 6, characterized in that: An insertion hole is formed between the two adjacent sets of mounting sleeves (201a) and chain plates (201b), and the tooth blocks of the first turntable (101), the second turntable (102) and the third turntable (103) are movably inserted into the insertion hole.

8. The preform synchronous and uniform heating chain according to claim 6 or 7, characterized in that: The mounting bracket (500) is fixedly connected to a clamping plate (301) at its bottom end, and the second chain group (300) is slidably embedded in the mounting groove formed between the clamping plate (301) and the mounting bracket (500).

9. The preform synchronous and uniform heating chain according to claim 8, characterized in that: The bottom end of the sleeve (A) is also fixedly connected to a toothed disc (A1), which meshes with the second chain group (300).

10. The preform synchronous uniform heating chain according to claim 4, characterized in that: The heating assembly (400) is provided with several groups, including a shell (401) and heating tubes (402). Several groups of heating tubes (402) are arranged longitudinally and are fixedly connected by a mounting plate (402a). A bracket (401a) is fixedly connected between the mounting plate (402a) and the inner wall of the shell (401). The first splicing frame (509) and the second splicing frame (510) are located in the plane of the heating tube (402), and the first chain group (200) is located on both sides of the heating tube (402).

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