Glass product forming device

Abstract

The utility model discloses a glass product forming device which comprises a forming die, the forming die comprises a die cavity, an opening is formed in the upper end of the die cavity, the die cavity further comprises a complete cavity wall, and the whole die cavity is in a big-end-up cone shape; an ejection mechanism is arranged at the bottom of the forming die and comprises a plunger die bottom, and the plunger die bottom is located in the die cavity. According to the utility model, the structure of the forming die is improved, so that the forming die is of an integral structure and does not have a die-forming joint line; and meanwhile, the formed product is ejected out by utilizing the ejection mechanism.

Description

Technical Field

[0001] The utility model relates to the manufacture of glass products, in particular to a forming device and a forming method for the glass products. Background Art

[0002] Glass products are commonly produced using the press-blowing method in industrial production. This method is favored by manufacturers for its light weight, high strength, and simultaneous shaping of the bottle body and mouth, making it less prone to wrinkling. In existing technology, the forming mold, consisting of a male and female die, closes together during operation, creating a seam line at the junction. Some products, such as wine glasses, require a high level of aesthetic appeal and desire to reduce or eliminate this seam line, but this is not possible with conventional line-forming machines. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a glass product forming device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The utility model provides a solution to the technical problem: a glass product forming device, comprising a forming mold, wherein the forming mold comprises a mold cavity, an upper end of the mold cavity is provided with an opening, the mold cavity further comprises a complete cavity wall, and the mold cavity as a whole is in a conical shape with a larger upper portion and a smaller lower portion; an ejection mechanism is provided at the bottom of the forming mold, the ejection mechanism comprises a plunger mold bottom, and the plunger mold bottom is located in the mold cavity.

[0005] The beneficial effects of the utility model are as follows: the utility model improves the structure of the forming mold so that the forming mold is an integral structure without a mold seam line; and at the same time, an ejection mechanism is used to eject the formed product.

[0006] As a further improvement to the above technical solution, the ejection mechanism includes an elastic member installed in the forming mold. The elastic member abuts against the plunger mold bottom, causing the plunger mold bottom to move downward. The elastic member ensures that the plunger mold bottom always moves downward, keeping the mold cavity intact.

[0007] As a further improvement of the above technical solution, the ejection mechanism includes an air cavity and a vent hole, the plunger mold bottom is sealedly connected to the air cavity, and the vent hole is connected to the air cavity. The vent hole and the air cavity are used to eject the product from the molding die by high air pressure.

[0008] As a further improvement of the above technical solution, the plunger mold bottom includes a protrusion, one end of the elastic member abuts against the protrusion, and the other end abuts against the forming mold.

[0009] As a further improvement of the above technical solution, it also includes a clamping mechanism, which is located above the forming mold.

[0010] As a further improvement of the above technical solution, the bottom of the mold cavity is in an arc shape. The arc-shaped mold cavity can make the product easier to release.

[0011] As a further improvement of the above technical solution, it also includes a blowing mechanism, which includes a blowing head, and the blowing head covers the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief description of the drawings required for describing the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also derive other design solutions and drawings based on these drawings without inventive effort.

[0013] Figure 1 This is a schematic structural diagram of a glass produced by the molding device of the present invention;

[0014] Figure 2 It is a structural schematic diagram of the forming device of the present utility model;

[0015] Figure 3 It is a structural diagram of the blowing process of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the product ejection of the utility model;

[0017] Figure 5 This is a schematic structural diagram of the product taken out of the utility model;

[0018] Figure 6 It is a schematic diagram of the initial mold structure of the present utility model.

[0019] Reference numerals:

[0020] Cup body 10, upper edge 11, forming mold 100, mold cavity 110, opening 120, cavity wall 130, ejection mechanism 200, plunger mold bottom 210, base portion 211, raised portion 212, elastic member 220, air cavity 230, vent hole 240, clamping mechanism 300, primary mold 410, punch 420, blowing mechanism 500, blowing head 510 DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. The preferred embodiments of the present invention are shown in the drawings. The purpose of the drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise expressly defined, terms such as "install," "connect," and "set" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meanings of these terms in this utility model based on the specific content of the technical solution. Furthermore, the various technical features of this invention may be combined interchangeably as long as they do not conflict with each other.

[0025] In the manufacturing process of glass products, the production process of glass products is generally divided into two steps, namely the first pressing (or first blowing) and the second blowing. The corresponding glass product molds for the two manufacturing processes are the prototype mold and the forming mold. Among them, the second blowing makes the shape of the glass bottle finally formed, and the inner cavity structure of the forming mold determines the shape of the finished glass product. Figure 1As shown, in the prior art, when producing such a glass, the mold is generally divided into two halves: the first and second molds. On the production line, the first and second molds periodically open and close. After closing, the arm assembly grips the glass blank in the preform mold and flips it between the first and second molds, allowing the glass blank to be blown a second time within the cavity between the first and second molds. The first and second molds then open to release the finished glass. However, due to a gap between the first and second molds, this gap creates two visible seams on the outer surface of the finished glass. Customers with high expectations for the appearance of the glass may prefer to eliminate these seams. However, existing open-close molds are clearly unable to achieve this.

[0026] To this end, the utility model provides a glass forming device, which can meet the above-mentioned requirements for seamless glass cups.

[0027] like Figure 1 As shown, the glass produced by this molding device has a unique shape: it is larger at the top and smaller at the bottom, with an upward-facing opening. Because the body 10 of this glass is not convex, the molding process can be completely modified by replacing the existing molding method with a single, integrated mold structure, eliminating the left and right molds. The only requirement is to cleverly design a demolding mechanism for the glass.

[0028] For details, see Figures 2 to 5 The glass product forming device includes a forming mold 100, which includes a mold cavity 110. The upper end of the mold cavity 110 is provided with an opening 120. The mold cavity 110 also includes a complete cavity wall 130. The mold cavity 110 is generally in a conical shape with a larger top and a smaller bottom. The bottom of the forming mold 100 is provided with an ejection mechanism 200. The ejection mechanism 200 includes a plunger mold bottom 210. The plunger mold bottom 210 is located in the mold cavity 110. Figure 2 The shape of the mold cavity 110 is consistent with the shape of the glass to be produced. The mold cavity 110 also has a continuous tapered shape, with a larger top and a smaller bottom. The circumferential wall 130 of the mold cavity 110 is a complete wall surface, that is, there are no gaps in the wall 130. Because the forming mold 100 is a monolithic structure, it is manufactured using a one-piece processing method, such as casting, turning, and polishing before forming, eliminating the traditional method of splitting the mold in half and then re-molding. Therefore, there are no gaps in the wall 130 of the mold 100, and the glass blown using the mold 100 will not have any seam lines.

[0029] After the glass is blown into shape, it is enclosed within the mold cavity 110 of the mold 100 and cannot be removed directly with a clamp. Therefore, the molding device of the present invention further includes an ejection mechanism 200 disposed at the bottom of the mold cavity 110 to eject the formed glass bottle upward.

[0030] See also Figures 2 to 5 The ejection mechanism 200 includes a plunger mold base 210, the upper surface of which forms the bottom surface of the glass. It is understood that the bottom of the forming mold 100 is provided with a through hole, which communicates with the mold cavity 110. The plunger mold base 210 is disposed in the through hole, and the upper surface contour of the plunger mold base 210 is substantially identical to the outer contour of the through hole at the bottom of the forming mold 100. Although there is a gap between the plunger mold base 210 and the through hole, this gap is located at the bottom of the mold cavity 110. Therefore, after the glass is formed, there will be at most a small gap at the bottom. Generally, since the bottom of a glass is relatively thick, this gap is not noticeable. Furthermore, the gap is located at the bottom, in an uncommon location on the glass, and therefore does not affect the appearance of the glass.

[0031] During glass blowing, the plunger mold base 210 and the mold cavity 110 work together to form the glass's outer contour. Once the glass is finished, the plunger mold base 210 is pushed upward by an external force, thereby lifting the formed glass from the bottom up. Because the mold cavity 110 is tapered, the glass is easily ejected. After ejection, the top edge of the glass is exposed outside the mold cavity 110, allowing it to be grasped with a clamp to completely remove the glass from the mold 100.

[0032] In order to improve the molding quality of the glass, the upper surface of the plunger mold bottom 210 needs to be as close as possible to the bottom of the mold cavity 110. Therefore, as a further preferred embodiment, the ejection mechanism 200 further includes an elastic member 220. Specifically, the elastic member 220 can be a compression spring. Figure 2The plunger mold bottom 210 includes a base portion 211, the upper surface of which forms the bottom of the glass. The base portion 211 is cylindrical in shape, and the elastic member 220 is sleeved on the outer circumference of the base portion 211. In addition, a protruding portion 212 is provided below the base portion 211. The outer diameter of the protruding portion 212 is larger than the outer diameter of the base portion 211 and also larger than the outer diameter of the elastic member 220. A first step surface is provided below the molding die 100. The first step surface is located below the mold cavity 110 and corresponds to the elastic member 220. The upper end of the elastic member 220 abuts against the first step surface, and the lower end abuts against the protruding portion 212. Under the action of its own gravity and the elastic force of the elastic member 220, the plunger mold bottom 210 always maintains a downward movement trend. Of course, in order to prevent the plunger mold bottom 210 from moving downward excessively, a positioning block can be provided in the molding die 100 , and the positioning block abuts against the lower surface of the protrusion 212 , thereby effectively preventing the plunger mold bottom 210 from moving downward excessively.

[0033] After the glass is blown, the plunger mold bottom 210 overcomes the elastic force of the elastic member 220 and its own gravity under the action of external force, and pushes the plunger mold bottom 210 upward. Since the plunger mold bottom 210 includes a protrusion 212, the protrusion 212 can also serve as a limit for upward movement.

[0034] There are many ways to apply external force to the ejection mechanism 200, see Figure 5 As a further preferred embodiment, in this embodiment, the ejection mechanism 200 includes an air cavity 230 and a vent hole 240. The plunger mold base 210 is sealedly connected to the air cavity 230, and the vent hole 240 is in communication with the air cavity 230. After the glass is blown, high-pressure gas is introduced into the vent hole 240. The high-pressure gas acts on the plunger mold base 210, thereby generating an upward thrust on the plunger mold base 210, which is used to eject the formed glass upward.

[0035] Since high-pressure gas is required during glass blowing, this embodiment cleverly utilizes the existing gas device on the original equipment to use air pressure to eject the glass, reducing equipment modification costs. Of course, in addition to using the aforementioned air pressure to eject the finished product, other power mechanisms can also be used, such as a crank-connecting rod mechanism, a linear cylinder, and so on.

[0036] See also Figure 5After the finished product is ejected, the entire glass needs to be removed from the mold 100 using a clamp. Therefore, as a further preferred embodiment, a clamping mechanism 300 is further included, located above the mold. Once the glass is lifted, its upper edge 11 has cleared the mold. The clamping mechanism 300 can then grip the glass and remove it completely. Once the glass is removed, another glass prototype can be gripped and flipped back into the mold cavity 110, ready for the next production cycle.

[0037] As a further preferred embodiment, the bottom of the mold cavity 110 is in an arc shape. The arc-shaped mold cavity can make the product easier to remove. Of course, the outer contour of the bottom of the glass is also in an arc shape. In addition, in order to facilitate production, the upper edge 11 of the glass can be provided with a flange. Figure 1 As shown, the upper edge of the glass is an outwardly protruding flange. Thus, when the glass is placed into the forming mold 100, the flange can be used to hang the glass blank on the upper part of the mold cavity 110, and the clamping mechanism 300 can also remove the glass by clamping the upper edge 11 of the flange.

[0038] See also Figure 6 In order to produce the flanged upper edge, the shape and structure of the primary mold can be optimized. A circle of concave cavities is provided on the primary mold 410. When the glass drop enters the primary mold 410, the punch 420 is activated. The punch 420 and the shape of the primary mold 410 are used to form the desired glass prototype.

[0039] See also Figure 3 As a further preferred embodiment, the molding device of the present invention further includes a blowing mechanism 500, which includes a blowing head 510. The blowing head 510 covers the opening 120. During production, after the glass blank enters the mold cavity 110, the blowing mechanism 500 is activated, using the blowing head 510 to cover the opening 120, and then ventilates the glass blank. The high-pressure gas acts on the inner cavity of the glass, causing the glass blank to expand under the action of the high pressure. Finally, under the constraints of the cavity wall 130 of the mold cavity 110 and the plunger mold bottom 210, the glass blank is finally formed into the desired shape.

[0040] Next, we introduce a production method such as Figure 1 The glass forming method shown in the figure uses the above-mentioned forming device.

[0041] The method comprises the following steps: first, processing the glass bottle blank through the primary mold;

[0042] Then, see Figure 2, turning over the glass blank and placing it into the forming mold, and making the glass blank hang at the opening of the forming mold;

[0043] Next, see Figure 3 , blowing air into the glass blank so that the outer wall of the glass blank can fit tightly against the cavity wall; see Figure 4 , after blowing, the glass is formed.

[0044] Then, see Figure 5 The formed glass is lifted up by the ejection mechanism.

[0045] Finally, the glass is removed by a clamping device.

[0046] This method changes the molding method and uses a complete molding mold to manufacture the product, so that the molded glass has no seam lines, thereby improving the quality of the finished product.

[0047] As a further preferred embodiment, the ejection mechanism lifts up the glass by introducing high-pressure gas.

[0048] As a further preferred embodiment, after the glass is lifted up, the glass is taken out of the forming mold by a clamping mechanism.

[0049] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A glass product forming device, characterized in that: The present invention comprises a forming mold, wherein the forming mold comprises a mold cavity, an opening is provided at the upper end of the mold cavity, the mold cavity further comprises a complete cavity wall, and the mold cavity as a whole is in a conical shape with a larger upper portion and a smaller lower portion; an ejection mechanism is provided at the bottom of the forming mold, the ejection mechanism comprises a plunger mold bottom, and the plunger mold bottom is located in the mold cavity.

2. The glass product forming device according to claim 1, characterized in that: The ejection mechanism includes an elastic member installed in the forming mold. The elastic member abuts against the plunger mold bottom, so that the plunger mold bottom has a tendency to move downward.

3. The glass product forming device according to claim 2, characterized in that: The ejection mechanism includes an air cavity and a vent hole. The plunger mold bottom is sealed and connected to the air cavity. The vent hole is communicated with the air cavity.

4. The glass product forming device according to claim 3, wherein: The plunger mold bottom includes a protrusion, one end of the elastic member abuts against the protrusion, and the other end abuts against the forming mold.

5. The glass product forming device according to claim 1, wherein: It also includes a clamping mechanism, which is located above the forming mold.

6. The glass product forming device according to claim 1, wherein: The bottom of the mold cavity is in an arc shape.

7. The glass product forming device according to claim 1, wherein: The utility model further comprises an air blowing mechanism, wherein the air blowing mechanism comprises an air blowing head, and the air blowing head covers the opening.

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