A mold for producing threads on glass bottle necks

Abstract

This utility model relates to the field of glass bottle forming mold technology, and provides a glass bottle neck thread forming mold, including a mold; the upper end of the mold has an opening groove inside, and multiple mold segments are built inside; a coaxial lifting platform that rotates and lifts is movably installed at the upper end of the mold; the upper end of each mold segment is provided with a support rod, which is slidably connected to a slide rail opened radially inside the lifting platform; a guide frame is installed inside the opening groove, which is a conical ring structure with the upper end inclined outward; the lower end of each mold segment has an inner ring groove. By setting separate mold segments at the bottle neck part of the mold and sliding them radially to the lifting platform, the rotation and lifting motion of the mold segments drives the mold segments to rotate and lift accordingly. At the same time, the guide frame guides the mold segments to move radially while lifting and lowering, realizing a two-way movement of spiral upward and radial separation. It separates from the thread structure along the thread trajectory, achieving the effect of forming bottle neck threads without damage.

Description

Technical Field

[0001] This utility model relates to the field of glass bottle forming mold technology, and more specifically, to a glass bottle mouth thread forming mold. Background Technology

[0002] Glass bottles and jars are widely used in the packaging of food, beverages, pharmaceuticals, and cosmetics due to their good chemical stability, strong barrier properties, and aesthetic appeal and hygiene. The vast majority of glass bottles and jars require threads at the neck to ensure a reliable seal when screwed onto the cap.

[0003] The typical process for forming the threaded neck of a glass bottle is as follows: after molten glass is dripped into the initial mold to form a bottle preform, the neck of the preform is held by a pair of closing forming molds (or mouth molds). Then, through air blowing or pressure blowing processes, the soft glass preform is made to fit tightly into the inner cavity of the mold, thereby forming the fine structure of the bottle neck, including the thread.

[0004] However, the opening and closing motion of traditional planar molds is only a simple linear radial motion, which is seriously mismatched with the spiral demolding trajectory required for threads. During forced demolding, the thread edges of the mold will violently scrape and squeeze the thread surface of the glass preform, which can easily lead to defects such as roughening, scratches, or even chipping on the glass thread surface;

[0005] To address the aforementioned issues, this application proposes a molding die for producing threads on glass bottle necks. Utility Model Content

[0006] The purpose of this invention is to provide a molding die for producing glass bottle neck threads, thereby solving the problem of easily scratched glass bottle neck threads in the prior art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] A mold for producing threads on glass bottle necks, comprising the mold itself;

[0009] The upper end of the mold has an opening groove inside, and multiple mold pieces are built inside.

[0010] The upper end of the mold is movably mounted with a coaxial lifting platform that rotates and moves up and down. The upper end of the mold piece is provided with a support rod that is slidably connected to a slide rail radially opened inside the lifting platform.

[0011] The opening slot is equipped with a guide frame, which is a conical ring structure with the upper end tilted outward;

[0012] The lower end of the mold piece is provided with an inner ring groove, which is sleeved on the outside of the guide frame. The bottom of the outer side of the inner ring groove is provided with a boss that fits against the outer side of the guide frame.

[0013] Preferably, the lower end of the lifting platform is provided with an outer ring frame, the upper end of the mold is provided with an outer ring groove, and the inner side of the outer ring frame is threadedly connected to the inner side of the outer ring groove.

[0014] Preferably, the inner side of the boss is embedded with balls that abut against the outer side of the guide frame.

[0015] Preferably, the upper end of the mold segment is provided with a support rod, and a spring telescopic rod is fixedly installed between the upper end of the support rod and one end of the slide.

[0016] Preferably, a stopper is provided above the lifting platform, which is sleeved above the spring telescopic rod, and plates extend downward from both sides of the stopper.

[0017] Preferably, the two side plates of the plug are inserted between the outer wall of the guide frame and the outer wall of the mold segment.

[0018] Preferably, a rotating wheel is fixedly installed on the outer side of the lifting platform.

[0019] The beneficial effects of this utility model are:

[0020] 1. By rotating and rising the mold petals with the lifting platform, the guide frame guides the mold petals to move radially outward during rotation and rise. This movement trajectory is exactly along the helical direction of the thread, so that the threaded surface of the mold petals and the threaded part of the glass bottle preform can be separated without interference, which fundamentally solves the problem of demolding scratches.

[0021] 2. By pushing the mold segments with the spring telescopic rod, they can automatically close radially during descent to form a closed mold cavity, ensuring the accuracy of thread forming. At the same time, the structure is simple and reliable, and is suitable for continuous production. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the mold of this utility model;

[0025] Figure 3 This is a schematic diagram of the disassembled mold structure of this utility model;

[0026] Figure 4This is a schematic diagram of the planar structure of the lifting platform and the combined part of the mold petal and the upper end of the mold of this utility model.

[0027] Figure 5 This is a schematic diagram of the combined structure of the lifting platform and the mold plate of this utility model;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the diagram: 11. Mold; 111. Outer ring groove; 112. Opening groove; 113. Guide frame; 12. Lifting platform; 121. Outer ring frame; 122. Slide rail; 13. Mold piece; 131. Inner ring groove; 132. Boss; 1321. Ball bearing; 133. Support rod; 134. Spring telescopic rod; 14. Plug. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "opening", "top and bottom", "thickness", "top", "middle", "length", "inner" and "around" indicate the orientation or positional relationship only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] A glass bottle neck thread forming mold is provided for producing glass bottles and machining bottle neck threads without damage. By setting separate mold segments 13 at the bottle neck part of the mold 11 and radially slidingly connecting them to the lifting platform 12, the mold segments 13 are driven to rotate and rise along with the mold segments 13. At the same time, the guide frame 113 guides the mold segments 13 to move radially while rising and falling, realizing a two-way movement of spiral ascent and radial separation. The mold segments separate from the thread structure along the thread trajectory, achieving the effect of forming bottle neck threads without damage.

[0033] In some embodiments, the specific structure of the glass bottle neck thread forming mold is as follows: Figure 1-5 As shown, it includes a mold 11 and a lifting platform 12 at its upper end;

[0034] Mold 11 consists of two opposing models, with internal cavities corresponding to the shape of glass bottles;

[0035] The upper inner side of the mold 11 has an opening groove 112, and four mold pieces 13 are installed inside it.

[0036] The inner side of the mold segment 13 is provided with a threaded groove for machining the threaded structure of the glass bottle mouth;

[0037] Furthermore, a guide frame 113 is fixedly installed on the bottom surface of the lifting platform 12, with its upper end inclined outward to form a conical ring structure;

[0038] The lower end of the mold piece 13 is provided with an inner ring groove 131, and the bottom of the outer side is integrally provided with a boss 132 extending inward, and the inner side of the boss 132 is machined into a tapered inclined surface that fits against the outer side of the guide frame 113.

[0039] It is understandable that when the mold petal 13 moves up and down, the guide frame 113 guides the boss 132, causing the mold petal 13 to move radially, that is, away from or closer to the bottle mouth.

[0040] Furthermore, the upper end of the mold lobe 13 is radially slidably connected to the lifting platform 12, and the lower end of the outer ring of the mold lobe 13 has an inner ring groove 131 extending out, which is threadedly connected to the inner side of the outer ring frame 121 opened at the upper end of the mold 11.

[0041] It is understandable that the mold 13 moves up and down with the lifting platform 12 and generates radial motion during the lifting motion, forming a bidirectional motion trajectory, thus achieving the effect of gradually separating from the bottle mouth while moving along the threaded trajectory.

[0042] like Figure 4 and Figure 5 As shown, a ball bearing 1321 is embedded in the inner side of the boss 132, which abuts against the outer side of the guide frame 113 to form a rolling contact, thereby reducing the frictional resistance between the boss 132 and the guide frame 113.

[0043] like Figure 4 and Figure 5 As shown, the inside of the lifting platform 12 has a vertically penetrating slide 122, and four slides are distributed around the axis of the lifting platform 12, corresponding to the center surface of each module 13.

[0044] Among them, the upper end of the mold lobe 13 is fixedly installed with a support rod 133, which is radially slidably installed inside the slide rail 122;

[0045] Furthermore, a fixing block extends from the upper outer end of the slide 122, and a spring telescopic rod 134 is fixedly installed on its side, which is fixedly connected to the upper side of the support rod 133.

[0046] It should be noted that the spring telescopic rod 134 is a telescopic hollow tube structure with a spring running through it.

[0047] It is understandable that when the lifting platform 12 descends, it drives the mold petal 13 to descend, and the elastic force of the spring telescopic rod 134 pushes the mold petal 13 to produce a radial inward movement.

[0048] Furthermore, a stopper 14 is provided above the lifting platform 12;

[0049] The upper end of the plug 14 is a semi-circular structure with a hole at the center, and it is fitted onto the top of the spring telescopic rod 134.

[0050] The lower ends of the stopper 14 have plates that can be inserted between the outer wall of the opening slot 112 and the outer wall of the mold 13 to position the mold 13 and keep it stable during the glass bottle process.

[0051] In addition, casters are installed on the outside of the lifting platform 12 to facilitate the lifting and lowering operation of the lifting platform 12.

[0052] Some publicly available information describes the specific usage methods of molds for producing threads on glass bottle necks, as follows:

[0053] S1. After the glass bottle is formed, remove the stopper 14 to release the restriction on the mold piece 13;

[0054] S2. Rotate the lifting platform 12 to raise it. At this time, the mold petals 13 are pulled and rotate synchronously upward.

[0055] During the rotation and ascent of S3 and the mold petal 13, the boss 132 is guided by the guide frame 113 and generates radial outward movement, thereby causing adjacent mold petals 13 to separate from each other.

[0056] S4. As the mold lobe 13 moves radially outward, the spring telescopic rod 134 is compressed by the support rod 133, causing the spring inside the spring telescopic rod 134 to be compressed and deformed.

[0057] S5. As the mold lobe 13 continues to rotate, rise, and move radially outward, it generates a motion specification that matches the thread structure and creates a gradual separation effect.

[0058] S6. When the mold plate 13 is installed into the opening slot 112, manually move the support rod 133 to compress and store the spring inside the spring telescopic rod 134. As the lifting platform 12 rotates and descends, it drives the mold plate 13 to descend.

[0059] S7. As the mold lobe 13 descends, a counter-thrust force is generated after the inner ring groove 131 is inserted into the outer side of the upper end of the guide frame 113, which drives the mold lobe 13 to move radially inward.

[0060] S8. Finally, 15 is placed above the spring telescopic rod 134, so that the two side plates of the spring telescopic rod 134 are inserted between the outer wall of the opening groove 112 and the outer wall of the mold piece 13 to form a jam.

[0061] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A mold for forming threads on the neck of a glass bottle, characterized in that: Including molds (11); The upper end of the mold (11) has an opening groove (112) inside, and multiple mold pieces (13) are built inside. The upper end of the mold (11) is movably mounted with a coaxial lifting platform (12) that rotates and lifts. The upper end of the mold piece (13) is provided with a support rod (133), which is slidably connected to a slide rail (122) radially opened inside the lifting platform (12). The opening slot (112) is equipped with a guide frame (113), which is a conical ring structure with the upper end inclined outward; The lower end of the mold (13) is provided with an inner ring groove (131) which is sleeved on the outside of the guide frame (113). The bottom of the outer side of the inner ring groove (131) is provided with a boss (132) which fits against the outer side of the guide frame (113).

2. The glass bottle neck thread forming mold according to claim 1, characterized in that: The lower end of the lifting platform (12) is provided with an outer ring frame (121), and the upper end of the mold (11) is provided with an outer ring groove (111). The inner side of the outer ring frame (121) is threadedly connected to the inner side of the outer ring groove (111).

3. The glass bottle neck thread forming mold according to claim 1, characterized in that: The inner side of the boss (132) is embedded with a ball (1321) that abuts against the outer side of the guide frame (113).

4. The glass bottle neck thread forming mold according to claim 1, characterized in that: The upper end of the mold (13) is provided with a support rod (133), and a spring telescopic rod (134) is fixedly installed between the upper end of the support rod (133) and one end of the slide (122).

5. The glass bottle neck thread forming mold according to claim 4, characterized in that: A stopper (14) is provided above the lifting platform (12), which is sleeved above the spring telescopic rod (134), and plates extend downward from both sides of the stopper (14).

6. The glass bottle neck thread forming mold according to claim 5, characterized in that: The two side plates of the plug (14) are inserted between the outer wall of the guide frame (113) and the outer wall of the mold (13).

7. The glass bottle neck thread forming mold according to claim 1, characterized in that: The lifting platform (12) is fixedly equipped with wheels on its outer side.

Images