Bottle blank seat autorotation separable mechanism of heating track of automatic bottle blowing machine

Abstract

The utility model discloses a bottle blank seat autorotation separable mechanism of a heating track of an automatic bottle blowing machine, which comprises the heating track and a plurality of bottle blank seats which are extruded to advance in the track, a group of autorotation separable mechanism is arranged on the outer side of each linear section of the heating track, and each group of autorotation separable mechanism comprises a rotating support. A belt pulley transmission mechanism is arranged on the rotating bracket; the middle of the rotating support is movably hinged to the heating track or other parts of the bottle blowing machine rack, the bottom of the rotating support is connected with a driving air cylinder, and the telescopic action of the driving air cylinder drives the rotating support to rotate relative to a hinged point. And a belt of a belt pulley transmission mechanism on the driving mechanism is further driven to abut against or be separated from a bottle blank seat main shaft in the heating track. According to the bottle blank seat rotation separable mechanism, a belt wheel driving structure is adopted, the problem of oil contamination of a chain transmission mechanism can be fundamentally solved, and meanwhile the problem of abrasion in the revolution process of the bottle blank seat is fundamentally solved.

Description

Technical Field

[0001] This utility model relates to a heating track for an automatic blow molding machine, specifically a preform holder self-rotating and separable mechanism for the heating track of an automatic blow molding machine. Background Technology

[0002] In the heating track of an automatic blow molding machine, in order to ensure that the preform is heated evenly, the preform holder needs to rotate on its own axis while moving around the heating track, so as to ensure that the preform is fully preheated.

[0003] Here, the existing preform holder rotates by a small chain set next to the heating track. During the entire revolution of the preform holder, the small chain always remains engaged with the preform holder. In operation, the chain drive is used to drive the preform holder to rotate.

[0004] Years of use have revealed that, to ensure smooth operation, the small chain requires frequent lubrication. However, this lubricant, combined with dust and contamination in the production workshop, can deteriorate the production environment of the blow molding machine, severely impacting the cleanliness of the blown bottles. Simultaneously, the high-speed rotation of the preform holder accelerates the wear of the rotating sprockets on it, necessitating regular replacement and maintenance. This increases maintenance costs and reduces the production efficiency of the blow molding machine. Utility Model Content

[0005] To address the aforementioned issues, this invention presents a self-rotating and separable preform holder mechanism for the heating track of an automatic blow molding machine. This mechanism employs a belt pulley drive structure, which fundamentally solves the oil contamination problem of chain drive mechanisms and also fundamentally solves the wear problem during the preform holder's revolution, extending the service life of the preform holder's self-rotating mechanism, reducing maintenance frequency, and improving the working efficiency of the blow molding machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A self-rotating and separable mechanism for preform seats on an automatic blow molding machine heating track includes a heating track and multiple preform seats that are extruded and moved forward on the track. The mechanism is characterized in that: a set of self-rotating and separable mechanisms is provided on the outer side of each straight segment of the heating track; each set of self-rotating and separable mechanisms includes a rotating bracket, on which a pulley transmission mechanism is provided. The pulley transmission mechanism includes a driving pulley, a driven pulley, and a belt connecting the two pulleys; the driving pulley is connected to a drive motor; the middle part of the rotating bracket is movably hinged to the heating track or other parts of the blow molding machine frame; the bottom of the rotating bracket is connected to a drive cylinder; the extension and retraction of the drive cylinder causes the rotating bracket to rotate relative to the hinge point, thereby causing the belt of the pulley transmission mechanism on it to abut or separate from the main shaft of the preform seats in the heating track.

[0008] More specifically, the aforementioned rotating bracket has multiple auxiliary rollers arranged in a straight line between the driving pulley and the driven pulley, with the outer side of the auxiliary rollers abutting against the inner side of the belt near the heating track.

[0009] More specifically, the aforementioned auxiliary rollers are distributed at equal intervals.

[0010] The preform holder self-rotating and separable mechanism designed in this utility model uses a belt to drive the preform holder to rotate. Compared with the existing chain drive structure, no lubricating oil needs to be added during operation, which can fundamentally eliminate the problem of oil stains and greatly improve the cleanliness of blown bottles.

[0011] In addition, the self-rotating separable mechanism combined with the rotating bracket has a belt that separates from the main shaft of the preform holder and does not work when the preform holder revolves with the heating track. When the preform holder finishes revolving with the heating track, it comes into contact with the main shaft of the preform holder and drives the preform holder to rotate. This structure can reduce the working resistance of the preform holder during revolution to a certain extent, reduce belt wear, extend the working life of the belt, reduce the frequency of subsequent maintenance, and improve the production efficiency of the equipment. Attached Figure Description

[0012] Figure 1 A schematic diagram of the planar structure of this utility model;

[0013] Figure 2 A cross-sectional view of the belt pulley transmission mechanism of this utility model when separated from the main shaft of the preform holder;

[0014] Figure 3 A schematic diagram of the planar structure of the preform holder at the end of its revolution according to this utility model;

[0015] Figure 4 A cross-sectional view of the belt pulley transmission mechanism of this utility model in contact with the main shaft of the preform holder;

[0016] Wherein, 1—heating track, 2—preform holder, 21—preform holder main shaft, 3—rotating and separable mechanism, 31—rotating bracket, 32—pulley drive mechanism, 321—driving pulley, 322—driven pulley, 323—belt, 33—drive cylinder, 34—auxiliary roller. Detailed Implementation

[0017] like Figure 1-4 As shown, a preform holder rotation detachable mechanism for an automatic blow molding machine heating track includes a heating track 1 and a preform holder 2 that moves intermittently in the heating track as it is extruded. A set of rotation detachable mechanisms 3 is provided on the outer side of each straight segment of the heating track 1.

[0018] In this figure, the self-rotating detachable mechanism 3 includes a rotating bracket 31, on which a pulley transmission mechanism 32 is mounted. The pulley transmission mechanism 32 includes a driving pulley 321, a driven pulley 322, and a belt 323 connecting the two pulleys. The driving pulley 321 is connected to a drive motor. During operation, the drive motor drives the driving pulley 321 to rotate, thereby driving the belt 323 on it to rotate synchronously.

[0019] The middle part of the rotating bracket 31 is movably hinged to the heating track 1 or other parts of the blow molding machine frame. The bottom of the rotating bracket 31 is connected to a drive cylinder 33. The extension and retraction of the drive cylinder 33 can drive the rotating bracket 31 to rotate relative to the hinge point, thereby causing the belt 323 of the belt pulley transmission mechanism 32 on it to come into contact with or separate from the preform seat main shaft 21.

[0020] The preform holder self-rotating separable mechanism 3 designed above uses a belt pulley transmission mechanism 32 to drive the preform holder main shaft 21 to rotate. During operation, the rolling friction between the belt 323 and the preform holder main shaft 21 drives the preform holder 2 to rotate. Compared with the existing sprocket transmission structure design, there is no need to use lubricating oil for lubrication, which can fundamentally eliminate the oil stain problem of the chain sprocket in the existing structure, and will not cause pollution to the production environment of the blow molding machine, which can greatly improve the cleanliness of blow-molded bottles.

[0021] Furthermore, in the aforementioned rotatable and detachable mechanism 3, the belt 323 separates from the preform holder main shaft 21 as the preform holder 2 revolves with the heating track 1. This reduces the resistance of the preform holder 2 during its revolution to a certain extent, and also effectively reduces the wear of the belt 323, thereby extending the service life of the rotating mechanism, reducing the frequency of subsequent maintenance, and improving the production efficiency of the equipment. When the preform holder 2 finishes revolving with the heating track 1, the belt 323 contacts the preform holder main shaft 21, causing the preform holder 2 to rotate, ensuring uniform heating of all sides of the preform on the preform holder 2, and providing effective protection for the normal blowing of the preform in the later stages.

[0022] Here, considering that the belt 323 can effectively contact the main shaft 21 of each preform holder during rotation, the rotating bracket 31 is provided with a row of auxiliary rollers 34 arranged in a straight line between the driving pulley 321 and the driven pulley 322. The outer side of the auxiliary rollers 34 is in contact with the inner side of the belt 323 near the heating track 1. The above-mentioned auxiliary rollers 34 can effectively improve the tension of various parts of the belt 323. In use, the auxiliary rollers 34 move synchronously with the rotating bracket 31 and the pulley transmission mechanism 32, which can ensure the effective contact between the belt 323 and the main shaft 21 of each preform holder, and ensure the normal rotation of each preform holder 2.

[0023] In addition, in order to obtain a better fit of the belt 323, the above auxiliary rollers 34 are distributed at equal intervals, and the distance between adjacent auxiliary rollers 34 is equal to the total length of two or three or more preform seats 2 in the heating track 1. The preferred interval distance is equal to the total length of two preform seats 2. This illustration is based on this. Other interval distance settings have similar effects and technical principles, and will not be repeated here.

[0024] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A bottle blank seat self-rotation separable mechanism of a heating track of an automatic bottle blowing machine, comprising a heating track (1) and a plurality of bottle blank seats (2) extruded forwardly in the track, characterized in that: The heating track (1) is provided with a set of self-rotating detachable mechanisms (3) on the outer side of each straight section, each set of self-rotating detachable mechanisms (3) comprising a rotating support (31) provided with a belt wheel transmission mechanism (32), the belt wheel transmission mechanism (32) comprising a driving belt wheel (321), a driven belt wheel (322) and a belt (323) connecting the two belt wheels, the driving belt wheel (321) being connected with a driving motor; the middle part of the rotating support (31) is movably hinged with the heating track (1), the bottom of the rotating support (31) is connected with a driving cylinder (33), the extension and retraction of the driving cylinder (33) drives the rotating support (31) to rotate relative to the hinge point, thereby driving the belt (323) of the belt wheel transmission mechanism (32) on the rotating support (31) to abut against or separate from the preform seat main shaft (21) in the heating track.

2. A preform seat self-rotation separable mechanism of a heating track of an automatic bottle blowing machine according to claim 1, characterized in that: The rotating support (31) is provided with a plurality of auxiliary rollers (34) arranged in a straight line between the driving belt wheel (321) and the driven belt wheel (322), the outer side of the auxiliary rollers (34) abutting against the inner side of the belt (323) close to the heating track (1) side.

3. A preform seat self-rotation separable mechanism of a heating track of an automatic bottle blowing machine according to claim 2, characterized in that: The plurality of auxiliary rollers (34) are distributed at equal intervals.

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