Bottle mold with stepwise opening of bottle body and bottle shoulder

Abstract

The present application discloses a bottle mold with step demolding of bottle body and bottle shoulder, which comprises a body, a top cover installed on the body, a base piece supporting the body, a shoulder forming block for forming the bottle shoulder, a pressure protrusion piece for pressing the shoulder forming block under force, and an elastic reset piece for resetting, the shoulder forming block is installed in the gap between the top cover and the body and can move between the first position for forming the bottle shoulder and the second position for demolding, the pressure protrusion piece is installed between the top cover and the shoulder forming block, the pressure protrusion piece is provided with a limiting flange which can push the shoulder forming block to move, the pressure protrusion piece at least partially extends out of the top cover to receive external force to drive the shoulder forming block to move to the first position, and the elastic reset piece is arranged between the shoulder forming block and the body to apply elastic force to the shoulder forming block in the direction away from the body, so that the shoulder forming block automatically moves to the second position under the action of the elastic force. The present application effectively solves the technical problem that the bottle with complex shoulder cannot be smoothly demolded.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to a bottle mold in which the bottle body and bottle shoulder are molded in separate steps. Background Technology

[0002] As consumers increasingly demand personalization and artistry in their products, the design of glass bottles and jars is becoming increasingly complex and diverse. In addition to decorative features such as patterns and angles on the bottle surface, the shoulder area is often designed with complex curved surfaces featuring annular grooves or protrusions to meet aesthetic requirements, brand recognition, and compatibility with special bottle caps. These annular structures are continuously distributed around the circumference of the bottle, and their concave and convex directions intersect or are perpendicular to the traditional left-right parting direction (i.e., horizontal radial direction).

[0003] Currently, glass bottles and jars are mainly produced using a symmetrical left and right half-mold assembly method. However, when the bottle shoulder has the aforementioned annular groove or protrusion, an inverted structure is formed in the left-right mold parting direction. This causes mechanical interference between the bottle shoulder forming surface and the solidified glass bottle shoulder during the horizontal separation of the left and right half-molds, making it impossible to demold smoothly and even causing product breakage.

[0004] To address the aforementioned issues, existing technologies typically employ a split mold design that completely separates the shoulder molding portion from the main bottle body. This involves adding independent shoulder molding inserts to the left and right half molds, which are then removed manually or by an auxiliary mechanism before mold opening. However, this split mold design has significant drawbacks: firstly, it increases the number of mold parts, complicates assembly relationships, and demands extremely high assembly precision; secondly, the additional disassembly and assembly processes rely on manual intervention, which not only reduces production efficiency but also increases operational uncertainty and the risk of mold damage.

[0005] Therefore, a technical solution is needed to overcome the above problems. Summary of the Invention

[0006] In order to overcome some shortcomings in the existing technology, the purpose of this invention is to provide a bottle mold in which the bottle body and bottle shoulder are molded in separate steps to solve the above-mentioned technical problems.

[0007] To achieve its objective, the present invention employs the following technical solution: Bottle molds with separate molding processes for the bottle body and shoulder include: The body includes a left half mold and a right half mold for mold closing; A top cover is installed on top of the main body, and a gap is formed between the top cover and the main body; A base component is used to support the main body. When the left half mold and the right half mold of the main body are closed, they are at least partially closed on the base component, so that the main body is connected to the base component, and the base component and the main body together form a closed space for the molding of bottle structures. A shoulder forming block is installed in the gap between the top cover and the body. The shoulder forming block can move between a first position and a second position within the gap. In the first position, the shoulder forming block abuts against the top of the body to form a bottle shoulder. In the second position, the shoulder forming block abuts against the bottom of the top cover to facilitate mold opening. A pressure-bearing protrusion is installed between the top cover and the shoulder molding block. The pressure-bearing protrusion has a limiting flange for pushing the shoulder molding block to move, and the pressure-bearing protrusion extends at least partially beyond the top cover to receive external force to move the shoulder molding block to the first position; and An elastic reset member is disposed between the shoulder molding block and the body, and is used to apply an elastic force to the shoulder molding block away from the body, so that the shoulder molding block automatically moves to a second position under the action of the elastic force.

[0008] In some embodiments, the shoulder forming block has a limiting hole with a small diameter section at the bottom and a large diameter section at the top, and the pressure-bearing protrusion protrudes radially outward to form the limiting flange. The outer diameter of the limiting flange is set to be larger than the inner diameter of the small diameter section of the limiting hole and smaller than the inner diameter of the large diameter section of the limiting hole.

[0009] In some embodiments, the top surface of the body is provided with a mounting hole with a small diameter section at the bottom and a large diameter section at the top. The elastic reset member is a compression spring. The lower end of the elastic reset member is accommodated and positioned in the large diameter section of the mounting hole, and the upper end extends out of the mounting hole and abuts against the bottom surface of the shoulder forming block.

[0010] In some embodiments, when the shoulder molding block is installed on the body, the position of the limiting hole corresponds to the position of the mounting hole.

[0011] In some embodiments, the top cover is provided with a clearance hole, through which the top of the pressure-bearing protrusion can extend out of the top cover and be subjected to external force.

[0012] In some embodiments, the base component includes a support base for support and a connecting portion for connection with the body. The top of the connecting portion forms a closed space with the body for forming a bottle-like structure. The connecting portion is clamped when the left and right halves of the body are molded together.

[0013] In some embodiments, the connecting part is provided with a locking protrusion, and the left half mold and the right half mold of the main body are provided with locking grooves. When the left half mold and the right half mold are closed, the locking protrusion corresponds to the position of the locking groove, and the locking protrusion is engaged in the locking groove, so that the connection between the main body and the base component is stable.

[0014] In some embodiments, the base member is provided with a bottle bottom forming groove for forming the bottle bottom.

[0015] In some embodiments, the top of the body is provided with a first groove, and the top cover is installed in the first groove.

[0016] In some embodiments, the top cover has a second groove, and the top of the body has a third groove. When the top cover is installed on the body, the second groove and the third groove form the gap.

[0017] In some embodiments, the diameter of the third groove is smaller than the diameter of the first groove, and the diameter of the second groove is the same as the diameter of the third groove.

[0018] This invention relates to a bottle mold with a step-by-step opening mechanism for the bottle body and shoulder. By incorporating a longitudinally floating shoulder forming block between the fixedly connected body and top cap, and utilizing the pressing and lifting actions of the press head, coupled with the automatic resetting of an elastic reset component, the shoulder forming block automatically retracts upwards before the left and right half-molds separate. This action pre-emptively creates clearance space for the annular grooves or protrusions of the shoulder before the left and right molds open, thus completely avoiding mechanical interference during demolding. Furthermore, the entire process requires no manual intervention and is highly automated.

[0019] The bottle mold of the present invention, which separates the bottle body and the bottle shoulder for each step, strictly limits the longitudinal stroke of the shoulder forming block by the cooperation of the pressure protrusion, the limiting hole and the mounting hole, ensuring the consistency of the reset position each time the mold is opened, thereby ensuring the appearance consistency and dimensional stability of the connection between the bottle body and the bottle shoulder in mass production.

[0020] This invention relates to a bottle mold with separate molding of the bottle body and shoulder. The shoulder forming module is highly integrated within the gap between the main body and the top cap, and all functions are achieved through elastic elements and pressure-bearing protrusions. The entire mold only requires two symmetrically arranged half-molds to complete the forming of complex shoulder bottle bodies, significantly reducing the number of parts, simplifying the assembly process, and lowering manufacturing and maintenance costs.

[0021] This invention relates to a bottle mold with a step-by-step opening mechanism for the bottle body and shoulder. A base component forms a closed space with the main body for bottle structure forming. During mold opening, the left and right halves separate horizontally, while the formed glass bottle remains on the base component, which provides stable support. Operators or robots can remove the product from the outside without inserting clamps into the bottle's interior. This design avoids damage or deformation to the inner wall caused by internal clamping before the glass product has fully cooled and solidified, significantly improving the molding yield. The connection between the base component and the main body is achieved through a locking protrusion and groove, ensuring accurate positioning of the main body during mold closing and guaranteeing long-term, stable, and high-precision operation of the entire mold.

[0022] This invention relates to a bottle mold with separate molding of the bottle body and shoulder. A base component and the main body enclose a sealed space for forming the bottle structure. The left and right halves of the mold can be separated from the base component, facilitating individual maintenance, cleaning, and replacement of each component. When a component is worn or damaged, only the corresponding component needs to be replaced, eliminating the need to scrap the entire mold and reducing maintenance costs. Furthermore, the shape of the bottle bottom can be modified by replacing the base component with one of different structures.

[0023] This invention relates to a bottle mold with a separate body and shoulder molding process, featuring a base component. During use, the base component is typically fixedly mounted on the press worktable, providing a unified positioning reference for the installation and movement of the left and right half-molds. The left and right half-molds align with the base during mold closing, ensuring the accuracy of the mold closing and preventing uneven bottle wall thickness or surface defects caused by misalignment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the bottle mold in this invention, in which the bottle body and bottle shoulder are molded in stages. Figure 2 This is an exploded structural diagram of the bottle mold in this invention, in which the bottle body and bottle shoulder are molded in stages. Figure 3 This is a schematic diagram of the structure of the main body in this invention; Figure 4 This is a schematic diagram of the right half of the mold in this invention; Figure 5 This is a schematic diagram of the top cover structure as viewed from the top surface in this invention; Figure 6 This is a schematic diagram of the top cover structure as viewed from the bottom surface in this invention; Figure 7 This is a schematic diagram of the shoulder molding block in this invention as viewed from the top surface; Figure 8 This is a schematic diagram of the shoulder molding block in this invention as viewed from the bottom. Figure 9 This is a schematic diagram of the structure of the pressure-bearing protrusion of the present invention; Figure 10 This is a schematic diagram of the structure of the base component of the present invention; Figure 11 A perspective view of the fixture used in the bottle mold of the present invention, which involves step-by-step molding of the bottle body and the bottle shoulder; Figure 12 This is a perspective view of the bottle mold of the present invention, which involves step-by-step molding of the bottle body and bottle shoulder, in use. Figure 13 This is a top view of the bottle mold of the present invention, which involves step-by-step molding of the bottle body and bottle shoulder. Figure 1 ; Figure 14 For along Figure 13 A schematic diagram of the cross-sectional structure cut along the AA direction; Figure 15 This is a top view of the bottle mold of the present invention, which involves step-by-step molding of the bottle body and bottle shoulder. Figure 2 ; Figure 16 For along Figure 15 A schematic diagram of the cross-sectional structure taken along the BB direction.

[0026] In the diagram: 1. Top cover; 11. Second groove; 12. Clearance hole; 13. Fixing countersunk hole; 14. Exhaust and feed hole; 2. Body; 21. Left half mold; 22. Right half mold; 23. Mold groove; a. Recess; b. Protrusion; 24. First groove; 241. Screw hole; 242. Countersunk screw; 25. Third groove; 26. Mounting hole; 27. Annular protrusion; 28. Slot; 3. Base piece; 31. Support base; 32. Connecting part; 321. Positioning protrusion; 33. Bottle bottom forming groove; 4. Shoulder forming block; 41. Shoulder forming surface; 42. Limiting hole; 5. Gap; 6. Pressure-bearing protrusion; 61. Limiting flange; 7. Elastic reset piece; 8. Press head. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the above description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] Figure 1 This is a schematic diagram of the overall structure of the bottle mold for the bottle body and bottle shoulder of the present invention.

[0033] See Figures 1 to 16As shown, a bottle mold (hereinafter referred to as the mold) with a step-by-step molded body and shoulder is used for bottle structure molding. It includes a top cap 1, a body 2, a base 3, and a shoulder molding block 4. The body 2 constitutes the enclosure structure of the mold, used to mold the main body of the bottle, providing a circumferential closed space and lateral pressure resistance support. The top cap 1 is located at the top opening of the body 2, which can evenly transmit the longitudinal thrust generated during the molding process to the side wall of the body 2, preventing axial movement during the molding process of the body 2 and ensuring the accuracy of the bottle height dimension. The base 3 is located at the lower opening of the body 2, used to support the body 2 in the longitudinal direction, and together with the body 2, forms a closed space for bottle structure molding. The shoulder molding block 4 is located in the longitudinal direction between the top cap 1 and the body 2. The bottom surface of the shoulder molding block 4 is provided with a shoulder molding surface 41 that matches the contour of the target bottle shoulder, used to form the bottle shoulder of the bottle structure in the closed space.

[0034] Among them, see Figure 1 , Figure 2 and Figure 3 As shown, the main body 2 mainly includes two half-molds arranged symmetrically and separable from each other along the horizontal parting direction, namely the left half-mold 21 and the right half-mold 22 as commonly referred to. The left half-mold 21 and the right half-mold 22 can be joined together to form a columnar mold cylinder, and the mold cylinder has a closed space for forming bottle-like structures.

[0035] Both the left half mold 21 and the right half mold 22 are integrally block-shaped structures. Each half mold has a mold groove 23 on its opposite side to define the outline of the target bottle structure. When the two half molds are joined, the mold groove 23 forms a forming surface for molding the sides of two adjacent bottles. Both the left half mold 21 and the right half mold 22 are semi-circular cylindrical in shape. When the molds are closed, they are secured by a clamp (such as a detachable fixture) on their outer circumference. Figure 11 The clamp shown can be tightened by adjusting the bolts to form a complete cylindrical body 2. The clamping force of the clamp makes the left half mold 21 and the right half mold 22 firmly hug each other, so as to jointly resist the radial expansion force of the molten material applied to the inner wall during the molding process, maintain the stability of the mold cavity shape, and the detachable clamp connection allows the body 2 to be quickly separated into left and right halves, thereby completely releasing the circumferential restriction on the internal components when the mold is opened.

[0036] Preferably, see Figure 2 , Figure 3 and Figure 4 One of the left half mold 21 and the right half mold 22 has a recess a on the merging side, and the other has a protrusion b on the merging side. When the left half mold 21 and the right half mold 22 are merged, the recess a and the protrusion b fit together to complete the mold closing. This ensures that there is no relative displacement or separation between the left half mold 21 and the right half mold 22 when they are closed, thus guaranteeing the stability of the mold.

[0037] Preferably, the mold grooves 23 of the left and right half molds of the body 2 are not closed at the top and bottom, so that they can be connected to the base part 3 to form a complete closed space while feeding material from the top.

[0038] See Figure 2 , Figure 5 and Figure 6 When the top cover 1 is fixedly installed above the body 2, it is embedded inside the body 2. Specifically, the body 2, which is formed by the merging of the left half mold 21 and the right half mold 22, has a first groove 24 on its top. The first groove 24 is a circular groove structure, and multiple screw holes 241 are arranged in a ring on the first groove 24. The top cover 1 is a disc-shaped plate that matches the contour of the groove on the top surface of the body 2. The top cover 1 is installed on the body 2 by being installed in the first groove 24. The top cover 1 has a fixing countersunk hole 13 that corresponds one-to-one with the screw holes 241 of the first groove 24 of the body 2. The top cover 1 and the body 2 are rigidly and detachably fixedly connected by countersunk screws 242 passing through the fixing countersunk hole 13 and screwing into the screw hole 241. In use, the top cover 1 is rigidly connected to the body 2 by the countersunk screws 242, and can be used to bear the longitudinal pressure transmitted by the press head 8 in the mold closing state and transmit it to the body 2.

[0039] Preferably, a gap 5 for mounting the shoulder molding block 4 is provided between the top cover 1 and the body 2. Specifically, in this embodiment, the top cover 1 is provided with a second groove 11 on its inner side. When the top cover 1 is fixed to the first groove 24 of the body 2 by countersunk screws 242, a mounting gap 5 with a certain height is formed between the second groove 11 on the lower surface of the top cover 1 and the first groove 24 in the longitudinal direction. The height of the gap 5 is determined by the thickness of the shoulder molding block 4, and at least allows the shoulder molding block 4 to move up and down (longitudinal movement) within the gap 5.

[0040] Preferably, the body 2 is further provided with a third groove 25, the diameter of the third groove 25 being the same as the diameter of the second groove 11, so that when the top cover 1 is installed on the body 2, the third groove 25 and the second groove 11 are positioned correspondingly, and a gap 5 can be formed between the third groove 25 and the second groove 11 for the shoulder forming block 4 to move, so that the shoulder forming block 4 can easily form the bottle shoulder and facilitate mold opening.

[0041] Preferably, on the body 2, the diameter of the third groove 25 is smaller than the diameter of the first groove 24, and the first groove 24 and the third groove 25 of the body 2 form a stepped surface.

[0042] Preferably, the top cover 1 can be divided into two halves. When the top cover 1 is installed on the top surface of the body 2, the two halves of the top cover 1 can be located on the top surfaces of the left half mold 21 and the right half mold 22 of the body 2, respectively. This ensures that when the mold opens to the left and right, the left half top cover 1 moves to the left along with the left half mold 21, and the right half top cover 1 moves to the right along with the right half mold 22. There is no relative displacement or separation between the top cover 1 and the body 2, ensuring that the relative positional relationship of each component inside each half mold remains stable during the mold opening process.

[0043] Preferably, the two halves of the top cover 1 are not symmetrically arranged, but one half has a protrusion b' and the other half has a recess a'. When assembled, the protrusion b' and the recess a' fit together, making the top cover 1 form a circular structure. This design allows the pressure applied to the top cover 1 by the press head 8 to be transmitted not only to the body 2 through their respective fixing screws, but also to be transmitted and balanced between the left and right halves through the fitting contact surfaces of the protrusion b' and the recess a'. This makes the press pressure on the two halves of the mold more uniform, avoiding warping and deformation of the top cover 1 on one side due to excessive force on one side or uneven assembly preload, and ensuring the sealing of the bottom surface of the shoulder molding block 4.

[0044] See Figure 2 , Figure 7 and Figure 8 The shoulder forming block 4 can move within the gap 5 between the top cover 1 and the body 2, between a first position for forming a bottle shoulder and a second position for mold opening. Specifically, in this embodiment, the shoulder forming block 4 is generally disc-shaped and is installed within the gap 5 formed by the second groove 11 of the top cover 1 and the third groove 25 of the body 2, so that it can slide freely longitudinally while being constrained in the horizontal direction. In use, the shoulder forming block 4 can move within the gap 5 between the top cover 1 and the body 2, between the first position for forming a bottle shoulder that seals against the top surface of the body 2 and the second position for mold opening that abuts against the second groove 11 of the top cover 1.

[0045] Preferably, the bottom surface of the shoulder forming block 4 (i.e. the side facing the body 2) is provided with a shoulder forming surface 41 that matches the contour of the target bottle shoulder. Specifically, in this embodiment, the shoulder forming surface 41 is formed with a raised ring for forming an annular groove of the bottle shoulder or a recessed ring for forming an annular protrusion 27 of the bottle shoulder, according to the product design.

[0046] Preferably, the shoulder forming block 4 is divided into two halves, which are symmetrically arranged and can be separated relative to each other along the horizontal parting direction. When the mold is opened to the left and right, the two halves of the shoulder forming block 4 move together with the left and right half molds 22 of the body 2. There is no relative displacement or separation between the shoulder forming block 4 and the body 2, which ensures that the relative positional relationship of each component inside each half mold remains stable during the mold opening process.

[0047] See Figure 2 , Figure 9 and Figure 16 It also includes a pressure-bearing protrusion 6 and an elastic reset member 7. The pressure-bearing protrusion 6 is installed between the top cover 1 and the shoulder forming block 4, and the pressure-bearing protrusion 6 can extend outside the top cover 1. When the pressure-bearing protrusion 6 is subjected to external force outside the top cover 1, it can press down on the shoulder forming block 4, so that it is located in the first position. The elastic reset member 7 is installed between the shoulder forming block 4 and the body 2. Preferably, the elastic reset member 7 is located between the bottom surface of the shoulder forming block 4 and the body 2. It generates an elastic force on the shoulder forming block 4 to move it away from the body 2 (third groove 25), that is, the elastic reset member 7 generates an elastic force to move the shoulder forming block 4 to the second position. In use, when the pressure-bearing protrusion 6 is subjected to downward pressure applied by the external press head 8, the shoulder forming block 4 overcomes the bias pressure of the elastic reset member 7 and moves downward to the first position that seals against the top surface of the body 2; when the external pressure is released, the shoulder forming block 4 moves upward under the bias pressure of the elastic reset member 7 to the second position that abuts against the top cover 1.

[0048] Specifically, in this embodiment, a plurality of longitudinally extending mounting holes 26 are provided in the third groove 25 on the top surface of the main body 2. The mounting holes 26 are stepped holes with a small diameter section at the bottom and a large diameter section at the top. The elastic reset member 7 is a compression spring. The lower end of the compression spring is accommodated and positioned in the large diameter section of the mounting hole 26. Its inner diameter is adapted to the inner diameter of the large diameter section of the mounting hole 26 to form radial positioning. The upper end of the compression spring extends out of the mounting hole 26 and abuts against the bottom surface of the shoulder forming block 4. In the free state, the height of the compression spring is greater than the sum of the depth of the large diameter section of the mounting hole 26 and the support height required when the shoulder forming block 4 is in the second position, so that the compression spring generates an elastic force on the shoulder forming block 4, causing the shoulder forming block 4 to move to the second position.

[0049] The shoulder forming block 4 is provided with a limiting hole 42, which also has a small diameter section at the bottom and a large diameter section at the top. The pressure-bearing protrusion 6 is a cylindrical pin. The pressure-bearing protrusion 6 is provided with a radially outward protruding limiting flange 61 near the top. The outer diameter of the limiting flange 61 is set to be larger than the inner diameter of the small diameter section of the limiting hole 42, and smaller than the inner diameter of the large diameter section of the limiting hole 42. When the pressure-bearing protrusion 6 is installed on the shoulder forming block 4 through the limiting hole 42, when the upper end face of the limiting flange 61 forms a stop contact with the lower end face of the large diameter section by pressing the pressure-bearing protrusion 6, the shoulder forming block 4 reaches the second position, that is, the limiting flange 61 can press down on the shoulder forming block 4. Furthermore, the top cover 1 is provided with a clearance hole 12 at the corresponding position. The outer diameter of the limiting flange 61 is larger than the diameter of the clearance hole 12. The length between the top of the pressure protrusion 6 and the limiting flange 61 is set to be greater than the longitudinal thickness of the top cover 1, so that the top of the pressure protrusion 6 can extend out of the top cover 1 through the clearance hole 12 of the top cover 1. The pressure protrusion 6 can accept the action of external force and press down the shoulder forming block 4, so that the shoulder forming block 4 can overcome the elastic force and move to the first position.

[0050] Preferably, the limiting hole 42 on the shoulder forming block 4 does not overlap with the shoulder forming surface 41, that is, the projection of the limiting hole 42 on the shoulder forming block 4 falls on the shoulder forming surface 41. When the pressure protrusion 6 is installed on the shoulder forming block 4 through the limiting hole 42, the pressure protrusion 6 does not pass through the shoulder forming surface 41, so that the limiting hole 42 does not affect the formation of the bottle shoulder in the bottle structure.

[0051] Preferably, when the shoulder forming block 4 is installed on the body 2, the position of the limiting hole 42 corresponds to the position of the mounting hole 26, the bottom end of the cylindrical pin can extend into the mounting hole 26, and the mounting hole 26 can axially limit the cylindrical pin, so that the cylindrical pin moves longitudinally when subjected to external force or elastic force, and the positioning is accurate.

[0052] Preferably, the top surface of the body 2 is also provided with an annular protrusion 27. The annular protrusion 27 is formed by precision milling of the body 2. The annular protrusion 27 surrounds and defines a recessed third groove 25. The groove is the contact surface that mates with the bottom surface of the shoulder forming block 4. Through the annular protrusion 27, the gap 5 between the top surface and the body 2 is not directly connected to the closed space forming the bottle-like structure inside the body 2.

[0053] See Figure 2 and Figure 10The base component 3 is the bottom main support structure of the body 2, which includes a support base 31 and a connecting part 32 connected to the body 2 to form a closed space for forming a bottle structure. Specifically, in this embodiment, the support base 31 is a cylindrical block with a certain thickness, and the connecting part 32 is a columnar structure protruding on the support base 31. When the left and right half molds 22 of the body 2 are closed, the connecting part 32 is clamped by the left and right half molds 22 and connected to the body 2, and the top of the connecting part 32 is the bottom surface that forms the cavity of the bottle structure.

[0054] Preferably, the base component 3 is engaged with the lower inner wall of the body 2 via its outer peripheral edge. Specifically, in this embodiment, the columnar connecting part 32 has a ring of locking protrusions 321 at approximately the middle position, and both the left and right half molds 22 of the body 2 are provided with slots 28. When the left and right half molds 22 of the body 2 are closed, the locking protrusions 321 and the slots 28 are positioned correspondingly, and the locking protrusions 321 are engaged in the slots 28, so that the connection between the body 2 and the base component 3 is stable.

[0055] Preferably, the top of the connecting part 32 is also provided with a bottle bottom forming groove 33, on which various different protrusion structures can be set, so that the bottle structure can form bottle bottom structures of different shapes during molding. Moreover, the base part 3 is detachably connected to the body 2. By replacing the base part 3, different bottle bottom designs can be completed without redesigning the entire mold, which is convenient to use.

[0056] Preferably, both the top cover 1 and the shoulder forming block 4 are provided with exhaust and feeding holes 14, which are used to guide the gas in the mold cavity to be discharged outward during the mold forming process and to inject molten glass liquid into the feeding mechanism after the mold is closed.

[0057] Furthermore, the positions of the exhaust inlet holes 14 on the top cover 1 and the shoulder forming block 4 are corresponding.

[0058] See Figures 12 to 16 As shown, the process of using the mold in this invention is as follows: Mold closing and forming state: When the mold is installed on the press, the press head 8 moves downward, first contacting and pressing down on the top of the top cover 1 where the pressure-bearing protrusion 6 extends. The pressure of the press head 8 is transmitted to the shoulder forming block 4 through the limiting flange 61 of the pressure-bearing protrusion 6. The shoulder forming block 4 overcomes the elastic force of the compression spring 4, causing the shoulder forming block 4 to slide vertically downward until its bottom surface is tightly fitted with the bottom surface of the third groove 25 on the top surface of the body 2. At this time, the shoulder forming block 4 is in the first position, and its bottom shoulder forming surface 41 and the forming surface of the body 2 together form a complete and closed bottle body and shoulder forming cavity. Subsequently, molten glass is injected into the forming cavity through the feeding mechanism, and then held under pressure, cooled, and shaped.

[0059] Step-by-step mold opening state: After the product is shaped, the press head 8 first lifts upward, relieving the downward pressure on the pressed protrusion 6. At this time, due to the disappearance of external constraints, the compression spring releases its elastic potential energy, and its top end pushes upward against the bottom surface of the shoulder forming block 4. Under the action of elastic force, the shoulder forming block 4 slides upward longitudinally until the top surface of the shoulder forming block 4 abuts against the bottom surface of the second groove 11 on the top cover 1 to form a stop, and the shoulder forming block 4 stops moving and reaches the second position.

[0060] During this process, the shoulder forming block 4 causes its bottom shoulder forming surface 41 to retract longitudinally upwards, so that the annular groove on the bottle shoulder on the molded bottle body is completely disengaged from the shoulder forming surface 41 in the longitudinal direction. That is, sufficient clearance space is provided above the annular groove, requiring no additional power source or manual intervention, which greatly simplifies the operation process and improves the reliability of the action. Subsequently, the left and right half molds are controlled to separate from each other in the horizontal mold parting direction, that is, to perform the conventional left and right mold opening. Since the undercut constraint at the bottle shoulder has been released in advance at this time, the bottle body is no longer subject to any interference resistance from the bottle shoulder during the horizontal separation process, thus achieving smooth and complete demolding.

[0061] The bottle mold of the present invention, which separates the bottle body and the bottle shoulder into separate molds, achieves fully automatic and high-precision separate mold opening of the bottle body and the bottle shoulder through the specific shape limitation of each component, detachable fixed connection, sliding guide cooperation and elastic reset connection, effectively solving the technical problem that the complex shoulder bottle body cannot be demolded smoothly.

[0062] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A bottle mold in which the bottle body and bottle shoulder are molded in separate steps, characterized in that, include: The body includes a left half mold and a right half mold for mold closing; A top cover is installed on top of the main body, and a gap is formed between the top cover and the main body; A base component is used to support the main body. When the left half mold and the right half mold of the main body are closed, they are at least partially closed on the base component, so that the main body is connected to the base component, and the base component and the main body together form a closed space for the molding of bottle structures. A shoulder forming block is installed in the gap between the top cover and the body. The shoulder forming block can move between a first position and a second position within the gap. In the first position, the shoulder forming block abuts against the top of the body to form a bottle shoulder. In the second position, the shoulder forming block abuts against the bottom of the top cover to facilitate mold opening. A pressure-bearing protrusion is installed between the top cover and the shoulder forming block. The pressure-bearing protrusion is provided with a limiting flange for pushing the shoulder forming block to move, and the pressure-bearing protrusion extends at least partially outside the top cover to receive external force to drive the shoulder forming block to move to the first position. as well as An elastic reset member is disposed between the shoulder molding block and the body, and is used to apply an elastic force to the shoulder molding block away from the body, so that the shoulder molding block automatically moves to a second position under the action of the elastic force.

2. The bottle mold with separate molding of the bottle body and bottle shoulder according to claim 1, characterized in that, The base component includes a support base for support and a connecting part for connection with the body. The top of the connecting part and the body form a closed space for forming a bottle-like structure. The connecting part is clamped when the left half mold and the right half mold of the body are closed.

3. The bottle mold with separate molding of the bottle body and bottle shoulder according to claim 2, characterized in that, The connecting part is provided with a locking protrusion, and the left half mold and the right half mold of the main body are provided with locking grooves. When the left half mold and the right half mold are closed, the locking protrusion corresponds to the position of the locking groove, and the locking protrusion is engaged in the locking groove, so that the connection between the main body and the base component is stable.

4. The bottle mold with separate molding of the bottle body and bottle shoulder according to claim 1, characterized in that, The base component is provided with a bottle bottom forming groove for forming the bottle bottom.

5. The bottle mold with separate molding of the bottle body and bottle shoulder according to any one of claims 1-4, characterized in that, The shoulder forming block has a limiting hole with a small diameter section at the bottom and a large diameter section at the top. The pressure-bearing protrusion protrudes radially outward to form the limiting flange. The outer diameter of the limiting flange is set to be larger than the inner diameter of the small diameter section of the limiting hole and smaller than the inner diameter of the large diameter section of the limiting hole.

6. The bottle mold with separate molding of the bottle body and bottle shoulder according to claim 5, characterized in that, The top surface of the main body is provided with a mounting hole with a small diameter section at the bottom and a large diameter section at the top. The elastic reset member is a compression spring. The lower end of the elastic reset member is accommodated and positioned in the large diameter section of the mounting hole, and the upper end extends out of the mounting hole and abuts against the bottom surface of the shoulder forming block.

7. The bottle mold with separate body and shoulder molding according to claim 6, characterized in that, When the shoulder molding block is installed on the body, the position of the limiting hole corresponds to the position of the mounting hole.

8. The bottle mold with separate molding of the bottle body and bottle shoulder according to any one of claims 1-4, characterized in that, The top of the body is provided with a first groove, and the top cover is installed in the first groove.

9. The bottle mold with separate body and shoulder molding according to claim 8, characterized in that, The top cover has a second groove, and the top of the body has a third groove. When the top cover is installed on the body, the second groove and the third groove form the gap.

10. The bottle mold with separate body and shoulder molding according to claim 9, characterized in that, The diameter of the third groove is smaller than the diameter of the first groove, and the diameter of the second groove is the same as the diameter of the third groove.

Images