Glass product forming device and forming method

Abstract

The glass product forming device 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. The structure of the forming mold is improved, so that the forming mold is of an integral structure and does not have a mold-forming joint line; and meanwhile, the formed product is ejected out by utilizing the ejection mechanism.

Description

Technical Field

[0001] The invention relates to the manufacture of a glass product, in particular to a forming device and a forming method of the glass product. Background Art

[0002] Glass products are often made by the press-blowing method in industrial production. The glass products obtained by the press-blowing method are light in weight, strong in strength, and the bottle body and bottle mouth are formed synchronously. They are not prone to wrinkles and are favored by various manufacturers. In the prior art, when the forming mold is working, the male mold and the female mold are closed together, and a seam line is generated at the joint of the closed mold. Some glass wine glass products have high requirements for appearance, and hope to reduce or eliminate the seam line, but this cannot be achieved in the current conventional row machine forming device. Summary of the invention

[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 solution of the present invention to solve the technical problem is: a forming device for glass products, including a forming mold, the forming mold including a mold cavity, the upper end of the mold cavity is provided with an opening, the mold cavity also includes a complete cavity wall, and the mold cavity as a whole is a cone shape with a larger upper part and a smaller lower part; the bottom of the forming mold is provided with an ejection mechanism, the ejection mechanism includes a plunger mold bottom, and the plunger mold bottom is located in the mold cavity.

[0005] The beneficial effects of the present invention are as follows: the present invention 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 of the above technical solution, the ejection mechanism includes an elastic member, which is installed in the molding die and abuts against the plunger mold bottom, so that the plunger mold bottom has a tendency to move downward. The elastic member is used to keep the plunger mold bottom moving downward all the time, so that the mold cavity remains 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 sealed and 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 mold through 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 molding mold.

[0009] As a further improvement of the above technical solution, it also includes a clamping mechanism, and the clamping mechanism 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 eject.

[0011] As a further improvement of the above technical solution, it also includes a blowing mechanism, wherein the blowing mechanism includes a blowing head, and the blowing head covers the opening.

[0012] A method for forming a glass product, which uses the above-mentioned glass product forming device, comprises the following steps: S100, processing a glass product blank through a primary mold; S200, turning the glass product blank over and placing it into a forming mold, and making the glass product blank hang at the opening of the forming mold; S300, blowing air into the glass product blank so that the outer wall of the glass product blank can be closely attached to the cavity wall; S400, lifting the formed glass product through an ejection mechanism.

[0013] The method changes the molding method and uses a complete molding mold to manufacture the product, so that the molded product has no seam line, thereby improving the quality of the molded product.

[0014] As a further improvement of the above technical solution, the ejection mechanism lifts up the glass product by introducing high-pressure gas.

[0015] As a further improvement of the above technical solution, after the glass product is lifted up, the glass product is taken out of the forming mold by a clamping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0017] Figure 1 is a schematic structural diagram of a glass cup produced by the molding device of the present invention; Figure 2 It is a structural schematic diagram of the molding device of the present invention; Figure 3 It is a structural schematic diagram of the blowing process of the present invention; Figure 4 It is a structural schematic diagram of the product ejection of the present invention; Figure 5 It is a structural schematic diagram of the product removal of the present invention; Figure 6It is a schematic diagram of the initial mold structure of the present invention.

[0018] Reference numerals: 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 part 211, protrusion 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 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 technicians in this field without creative work are all 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.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and the technical personnel in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution. At the same time, the various technical features in the invention can be combined interchangeably without conflicting with each other.

[0022] In the manufacturing process of glass products, the production process of glass products is generally divided into two steps, namely, the first pressing (or the first blowing) and the second blowing. The corresponding glass product molds for the two manufacturing processes are the initial 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 1 As shown, in the prior art, when producing the glass cup, its molding mold is generally divided into two parts, namely, the first molding sub-mold and the second molding sub-mold. On the production line, the first molding sub-mold and the second molding sub-mold are periodically opened and closed with each other. When the first molding sub-mold and the second molding sub-mold are closed with each other, the arm module clamps and flips the glass cup prototype at the primary mold to between the first molding sub-mold and the second molding sub-mold, so that the glass cup prototype is blown twice in the inner cavity structure between the first molding sub-mold and the second molding sub-mold, and then the first molding sub-mold and the second molding sub-mold are opened with each other to release the molded glass cup product. However, since there is a gap between the first molding sub-mold and the second molding sub-mold at the closed position, the gap causes the molded glass cup to have two visible seam lines on the outer surface of the cup wall. When the customer has high requirements for the appearance of the glass cup, he hopes that this seam line will disappear. However, the existing opening and closing molding mold is obviously unable to do so.

[0023] To this end, the present invention provides a glass cup forming device, which can meet the above-mentioned requirements for seamless glass cups.

[0024] like Figure 1 As shown, the glass cup produced by the molding device has a characteristic shape, that is, the glass cup is a cup that is large at the top and small at the bottom, and the opening is upward. Since the cup body 10 of the glass cup has no convex shape, when molding, the existing molding method can be completely changed, the left and right mold molding structure is cancelled, and an integral molding mold structure is adopted, and then only the demoulding mechanism of the glass cup needs to be cleverly set.

[0025] For details, see Figure 2~Figure 5 The glass product forming device includes a forming mold 100, the forming mold 100 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, and the mold cavity 110 is generally in a cone shape with a larger upper part and a smaller lower part; the bottom of the forming mold 100 is provided with an ejection mechanism 200, the ejection mechanism 200 includes a plunger mold bottom 210, and the plunger mold bottom 210 is located in the mold cavity 110. Figure 2The shape of the mold cavity 110 is consistent with the shape of the glass to be produced. The mold cavity 110 is also in a continuous cone shape with a large top and a small bottom. The circumferential cavity wall 130 of the mold cavity 110 is a complete wall surface, that is, there is no gap on the cavity wall 130. Since the molding die 100 is an integral structure, the molding die 100 is processed by an integrated processing method, such as molding by turning and grinding after casting, eliminating the traditional method of splitting in half and then molding. Therefore, there will be no gaps on the cavity wall 130 of the molding die 100, and the glass blown by the molding die 100 will not have a seam line.

[0026] After the glass is blown into shape, it will be wrapped in the mold cavity 110 of the molding mold 100 and cannot be directly taken out with a clip. Therefore, the molding device of the present invention further includes an ejection mechanism 200 disposed at the bottom of the mold cavity 110, and the ejection mechanism 200 ejects the molded glass bottle upward.

[0027] See also Figure 2~Figure 5 The ejection mechanism 200 includes a plunger mold bottom 210, and the upper surface of the plunger mold bottom 210 forms the bottom surface of the glass. It can be understood that the bottom of the molding die 100 is provided with a through hole, and the through hole is connected to the mold cavity 110. The plunger mold bottom 210 is provided in the through hole, and the upper surface contour of the plunger mold bottom 210 is substantially consistent with the outer contour of the through hole at the bottom of the molding die 100. Although there is a gap between the plunger mold bottom 210 and the through hole, the gap is at the bottom of the mold cavity 110. Therefore, after the glass is formed, there is at most a small gap at the bottom. In general, since the bottom of the glass is relatively thick, the gap is not obvious. Moreover, the gap is at the bottom, which is not common in the glass, so it does not affect the appearance of the glass.

[0028] When the glass is being blown, the plunger mold bottom 210 and the mold cavity 110 work together to form the outer contour of the glass. When the glass is blown, the plunger mold bottom 210 is pushed upward by the external force, thereby pushing the formed glass from bottom to top. Since the mold cavity 110 is a cone shape with a large top and a small bottom, the glass can be easily pushed out, and after being pushed out, the upper edge of the glass is exposed outside the mold cavity 110. At this time, the upper edge of the glass can be grasped by a clamp to completely remove the glass from the forming mold 100.

[0029] In order to improve the molding quality of the glass, the upper surface of the plunger mold bottom 210 needs to be as close to the bottom of the mold cavity 110 as possible. 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 211, the upper surface of which can form the bottom of the glass cup. The base 211 is cylindrical in shape, and the elastic member 220 is sleeved on the outer periphery of the base 211. In addition, a protruding portion 212 protruding outward is provided below the base 211, and the outer diameter of the protruding portion 212 is larger than the outer diameter of the base 211 and also larger than the outer diameter of the elastic member 220. A first step surface is provided below the molding die 100, and the first step surface is located below the mold cavity 110, and the first step surface 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 can abut against the lower surface of the protrusion 212, thereby effectively preventing the plunger mold bottom 210 from moving downward excessively.

[0030] 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 the protrusion 212, the protrusion 212 can also serve as a limit for upward movement.

[0031] 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 an air vent 240, the plunger mold bottom 210 is sealed and connected to the air cavity 230, and the air vent 240 is in communication with the air cavity 230. After the glass is blown, high-pressure gas is introduced into the air vent 240, and the high-pressure gas acts on the plunger mold bottom 210, thereby generating an upward thrust on the plunger mold bottom 210, and the formed glass can be ejected upward by utilizing the thrust.

[0032] Since high-pressure gas is required when the glass is blown into shape, in this embodiment, the existing gas device on the original equipment is cleverly used to use gas pressure to push the glass out. This reduces the cost of equipment modification. Of course, in addition to using the above-mentioned gas pressure to achieve the ejection of the finished product, it can also be achieved through other power mechanisms, such as crank-connecting rod mechanisms, linear cylinders, etc.

[0033] See also Figure 5After the finished product is ejected, the glass needs to be taken out of the molding die 100 with the help of a clamp. Therefore, as a further preferred embodiment, a clamp mechanism 300 is further included, and the clamp mechanism 300 is located above the molding die. When the glass is lifted up, the upper edge 11 of the glass has left the molding die. At this time, the glass can be clamped by the clamp mechanism 300 to take out the glass as a whole. After the glass is taken out, another glass prototype can be clamped and flipped into the mold cavity 110 to prepare for the next production cycle.

[0034] As a further preferred embodiment, the bottom of the mold cavity 110 is arc-shaped. The arc-shaped mold cavity can make the product easier to remove. Of course, the bottom outer contour of the glass is also arc-shaped. 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 a flange protruding outwards. In this way, when the glass is placed in the forming mold 100, the glass prototype can be hung on the upper part of the mold cavity 110 by the flange, and the clamp mechanism 300 can also take out the glass by clamping the upper edge 11 of the flange.

[0035] See also Figure 6 In order to process the flanged upper edge, the shape structure of the primary mold can be optimized. On the primary mold 410, a circle of concave cavities is set. When the glass drop enters the primary mold 410, the punch 420 moves, and the punch 420 and the shape of the primary mold 410 are used to form the desired glass cup prototype.

[0036] See also Figure 3 As a further preferred embodiment, the molding device of the present invention further comprises a blowing mechanism 500, wherein the blowing mechanism 500 comprises a blowing head 510, and the blowing head 510 covers the opening 120. During production, when the glass prototype enters the mold cavity 110, the blowing mechanism 500 is activated, and the opening 120 is covered by the blowing head 510, and then air is ventilated into the glass prototype, and the high-pressure gas acts on the inner cavity of the glass, and the glass prototype expands under the action of the high pressure, and finally, under the restriction of the cavity wall 130 of the mold cavity 110 and the plunger mold bottom 210, the desired glass shape is finally formed.

[0037] In addition, the present invention also provides production of Figure 1 A method for forming a glass cup is shown, which uses the glass bottle forming device as described above, and includes the following steps: first, processing a glass bottle blank through a primary mold; 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; Next, see Figure 3 , blowing air into the glass blank so that the outer wall of the glass blank can be close to the cavity wall; see Figure 4 , after blowing, the glass is formed.

[0038] Then, see Figure 5 The formed glass cup is lifted up by the ejection mechanism.

[0039] Finally, the glass is removed by a clamping device.

[0040] The method changes the molding method and uses a complete molding mold to manufacture the product, so that the glass cup after molding has no seam line, thereby improving the quality of the molded product.

[0041] As a further preferred embodiment, the ejection mechanism lifts up the glass by introducing high-pressure gas.

[0042] As a further preferred embodiment, after the glass is lifted up, the glass is taken out of the forming mold by a clamping mechanism.

[0043] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the 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 arranged at the upper end of the mold cavity, the mold cavity also comprises a complete cavity wall, and the mold cavity as a whole is in a conical shape with a larger upper part and a smaller lower part; an ejection mechanism is arranged at the bottom of the forming mold, and 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 comprises an elastic member, which is installed in the molding die. The elastic member abuts against the plunger die bottom, so that the plunger die bottom has a tendency to move downward.

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

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

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

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

7. The glass product forming device according to claim 1, characterized in that: It also includes a blowing mechanism, which includes a blowing head, and the blowing head covers the opening.

8. A method for forming a glass product, using the glass product forming device according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S100, processing a glass blank through a primary mold; S200, turning the glass blank over and placing it into a forming mold, and allowing the glass blank to hang at the opening of the forming mold; S300, blowing air into the glass blank so that the outer wall of the glass blank can be closely attached to the cavity wall; S400, lifting the formed glass blank through an ejection mechanism.

9. The method for forming a glass product according to claim 8, wherein: The ejection mechanism pushes up the glass product by introducing high-pressure gas.

10. The method for forming a glass product according to claim 8, wherein: After the glass product is lifted up, it is taken out of the forming mold by a clamping mechanism.

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