Bottle blank structure beneficial to stretch blow molding

Abstract

The bottle blank structure facilitating stretch blow molding comprises a bottle body and a positioning mechanism, a bottle opening is fixedly connected to the top of the bottle body, external threads are arranged on the outer side wall of the top of the bottle opening, and the positioning mechanism comprises a first clamping plate and a second clamping plate which are oppositely arranged. Clamping grooves are formed in the outer side wall of the first clamping plate and the outer side wall of the second clamping plate, the first clamping plate and the second clamping plate are clamped at the bottom end of a bottle opening, inserting plates are fixedly connected to the two ends of the first clamping plate, inserting grooves corresponding to the inserting plates are formed in the two ends of the second clamping plate, supporting rods are fixedly connected to one ends of the inserting plates, and the supporting rods are fixedly connected to the other ends of the inserting plates. According to the blow molding head connecting device disclosed by the utility model, the blow molding head of the blow molding device can be conveniently connected through the arrangement of the external connecting assembly, and the connecting assembly is convenient to disassemble and assemble and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the field of bottle preform related products, and specifically relates to a bottle preform structure that is conducive to stretch blow molding. Background Technique

[0002] With the improvement of living standards, containers made of glass, ceramics, metals, etc. that were commonly used in the past are gradually being replaced by plastic containers. Compared with containers made of glass, ceramics, metals, etc., plastic containers have the advantages of light weight, not being easily damaged, and low production and transportation costs. The manufacturing and forming of PET bottles generally first use an injection molding machine to inject the bottle preform, and then the blow molding machine stretches and blow molds the bottle preform;

[0003] Application No. CN201920992841.3 discloses a straight body bottle preform, including a bottle preform body. The interior of the bottle preform body includes a blow molding bottle mouth, and a thread is fixedly connected to the outer side of the blow molding bottle mouth. An upper clamping block is fixedly connected to the outer side of the blow molding bottle mouth, and a lower clamping block is fixedly connected to the outer side of the blow molding bottle mouth. The lower clamping block is located below the upper clamping block, and a clamping groove is reserved between the lower clamping block and the upper clamping block. The lower end of the blow molding bottle mouth is fixedly connected to a bottle preform body, and the lower end of the bottle preform body is fixedly connected to a bottle preform bottom cover. A groove is opened inside the bottle preform bottom cover, and a bottle preform sintering port is fixedly connected inside the groove;

[0004] In the above patent, both the lower clamping block and the upper clamping block are fixedly connected to the bottle mouth. After blow molding, the clamping blocks are reserved on the bottle, which affects the overall aesthetic effect of the bottle and has defects. Content of the Utility Model

[0005] The purpose of the utility model is to provide a bottle preform structure that is conducive to stretch blow molding, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A bottle preform structure that is conducive to stretch blow molding, including a bottle body and a positioning mechanism. The top of the bottle body is fixedly connected with a bottle mouth, and an external thread is provided on the outer side wall of the top of the bottle mouth. The positioning mechanism includes a first clamping plate and a second clamping plate that are oppositely arranged. Claw slots are provided on the outer side walls of the first clamping plate and the second clamping plate. The first clamping plate and the second clamping plate are both clamped at the bottom end of the bottle mouth. Both ends of the first clamping plate are fixedly connected with insertion plates, and slots corresponding to the insertion plates are provided at both ends of the second clamping plate. One end of the insertion plate is fixedly connected with a support rod, and a biting thread is provided on the outer wall of the top end of the support rod. A rotating sleeve is threadedly sleeved on the top end of the support rod. A pressing cover is fixedly connected to the outer side of the rotating sleeve. A communicating error tolerance groove is provided at the top of the slot. The support rod is slidably inserted into the error tolerance groove.

[0007] Preferably, a holding block is fixedly connected to the top end of the pressing cover.

[0008] Preferably, a plurality of anti-slip lines are provided at the bottom of the pressing cover and are inclined.

[0009] Preferably, the card slots on the first clamping plate and the card slots on the second clamping plate are communicated.

[0010] Preferably, both the first clamping plate and the second clamping plate are semicircular.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] For the preform structure facilitating stretch blow molding, by clamping the first clamping plate and the second clamping plate at the position where there is no external thread at the bottle mouth, at this time, the insertion plate on the first clamping plate is inserted into the slot on the second clamping plate, and at the same time, the support rod slides in the tolerance slot. After the first clamping plate and the second clamping plate are spliced, the swivel sleeve in the pressing cover is screwed onto the support rod by rotation. After being tightened, the bottom of the pressing cover presses against the outer wall of the second clamping plate to fix the position of the insertion plate, thereby installing and fixing the positioning mechanism. The blow molding device is clamped through the card slots between the first clamping plate and the second clamping plate. The present utility model facilitates the connection of the blow molding head of the blow molding device through the setting of the external connection component, and the connection component is convenient to disassemble and assemble, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of a preform structure facilitating stretch blow molding of the present utility model;

[0014] Figure 2 is a schematic view of the positioning mechanism of a preform structure facilitating stretch blow molding of the present utility model;

[0015] Figure 3 is a schematic structural view of the support rod part of a preform structure facilitating stretch blow molding of the present utility model.

[0016] In the figure: 1, bottle body; 2, bottle mouth; 3, first clamping plate; 4, second clamping plate; 5, insertion plate; 6, support rod; 7, swivel sleeve; 8, pressing cover; 9, holding block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. shall be understood in a broad sense. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Please refer to Figures 1-3 , an embodiment provided by the present utility model: a preform structure conducive to stretch blow molding, including a bottle body 1 and a positioning mechanism. The top of the bottle body 1 is fixedly connected with a bottle mouth 2, and an external thread is provided on the outer side wall of the top of the bottle mouth 2. The positioning mechanism includes a first clamping plate 3 and a second clamping plate 4 arranged oppositely. Claw slots are provided on the outer side walls of the first clamping plate 3 and the second clamping plate 4. The first clamping plate 3 and the second clamping plate 4 are both clamped at the bottom end of the bottle mouth. Plug plates 5 are fixedly connected to both ends of the first clamping plate 3, and slots corresponding to the plug plates 5 are provided at both ends of the second clamping plate 4. One end of the plug plate 5 is fixedly connected with a support rod 6. A meshing thread is provided on the outer wall of the top end of the support rod 6. A rotating sleeve 7 is threadedly sleeved on the top end of the support rod 6. A pressing cover 8 is fixedly connected to the outside of the rotating sleeve 7. A communicating tolerance slot is provided at the top of the slot. The support rod 6 is slidably inserted into the tolerance slot. Specifically, the first clamping plate 3 and the second clamping plate 4 are clamped at the position where the bottle mouth 2 does not have an external thread. At this time, the plug plate 5 on the first clamping plate 3 is inserted into the slot on the second clamping plate 4. At the same time, the support rod 6 slides in the tolerance slot. After the first clamping plate 3 and the second clamping plate 4 are spliced, the rotating sleeve 7 in the pressing cover 8 is screwed onto the support rod 6 by rotating. After being tightened, the bottom of the pressing cover 8 presses against the outer wall of the second clamping plate 4 to fix the position of the plug plate 5, thereby installing and fixing the positioning mechanism. The blow molding device is clamped through the claw slots between the first clamping plate 3 and the second clamping plate 4.

[0021] In this embodiment, a holding block 9 is fixedly connected to the top of the pressing cover 8 to facilitate the rotation of the pressing cover 8; a plurality of anti-slip lines are arranged obliquely at the bottom of the pressing cover 8 to increase the friction during pressing; the card slots on the first clamping plate 3 and the second clamping plate 4 are communicated; both the first clamping plate 3 and the second clamping plate 4 are semicircular.

[0022] Working principle: First, the first clamping plate 3 and the second clamping plate 4 are clamped at the position where the outer thread is not provided on the bottle mouth 2. At this time, the insertion plate 5 on the first clamping plate 3 is inserted into the slot on the second clamping plate 4, and at the same time, the support rod 6 slides in the tolerance slot. After the first clamping plate 3 and the second clamping plate 4 are spliced, the sleeve 7 in the pressing cover 8 is screwed onto the support rod 6 by rotation. After being tightened, the bottom of the pressing cover 8 presses against the outer wall of the second clamping plate 4 to fix the position of the insertion plate 5, so as to install and fix the positioning mechanism. The blow molding device is clamped through the card slots between the first clamping plate 3 and the second clamping plate 4.

[0023] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A preform structure for stretch blow molding, comprising a bottle body (1) and a positioning mechanism, characterized in that: The top of the bottle body (1) is fixedly connected with a bottle mouth (2), and an outer wall of the top of the bottle mouth (2) is provided with an external thread. The positioning mechanism comprises a first clamping plate (3) and a second clamping plate (4) arranged opposite to each other, and the outer walls of the first clamping plate (3) and the second clamping plate (4) are both provided with a clamping groove. The first clamping plate (3) and the second clamping plate (4) are both clamped at the bottom end of the bottle mouth. Both ends of the first clamping plate (3) are fixedly connected with an inserting plate (5), and both ends of the second clamping plate (4) are provided with a slot corresponding to the inserting plate (5). One end of the inserting plate (5) is fixedly connected with a support rod (6), and an engaging thread is provided on the outer wall of the top end of the support rod (6). The top end of the support rod (6) is threadedly sleeved with a rotating sleeve (7), and the outer side of the rotating sleeve (7) is fixedly connected with a pressing cover (8). The top of the slot is provided with a connected fault-tolerant groove, and the support rod (6) is slidably inserted in the fault-tolerant groove.

2. A preform structure for stretch blow molding according to claim 1, characterized in that: The top end of the pressing cover (8) is fixedly connected with a holding block (9).

3. A preform structure for stretch blow molding according to claim 1, characterized in that: The bottom of the pressing cover (8) is provided with a plurality of anti-slip grooves arranged in an inclined manner.

4. A preform structure for stretch blow molding according to claim 1, characterized in that: The card slot on the first card plate (3) and the card slot on the second card plate (4) are arranged to be connected.

5. A preform structure for stretch blow molding according to claim 1, characterized in that: The first clamping plate (3) and the second clamping plate (4) are both semicircular in shape.

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