Large mold easy to demold

Abstract

The utility model relates to the technical field of molds, in particular to a large mold easy to demold, which comprises an upper mold plate and a lower mold plate, plastic mold cavities are arranged in the upper mold plate and the lower mold plate, mounting bases are arranged on two sides of the bottom of the lower mold plate, and a mounting cavity is formed between the two mounting bases. A mold opening mechanism fixedly connected with the upper mold plate is arranged on the mounting base, an air injection hole communicated with the interior of the molding cavity is further formed in the bottom of the lower mold plate, and an air delivery pump connected to the air injection hole is arranged in the mounting cavity; according to the utility model, gas is input into the plastic mold cavity through the gas delivery pump butted with the gas injection hole, so that the blank cooling speed is accelerated, and the adhesive force and friction with the plastic mold cavity are reduced; and the upper mold plate is uncovered through the mold opening mechanism for mold taking, so that convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a large-scale mold which is easy to demould. Background Art

[0002] Large molds have larger mold cavities, so the blank is too large to be cooled and demolded, and the efficiency of waiting for cooling and demolding is too slow. In addition, during the molding process, the contact area between the mold itself and the blank is relatively large, and the friction and adsorption force between the blank and the mold will increase, thereby increasing the difficulty of demolding. During the cooling and molding process, the blank will be adsorbed on the mold surface, making it very troublesome to demold in the later stage, and the blank is prone to breakage. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides a large-scale mold that is easy to demould, aiming to solve the problem that large-scale molds are slow to mold and difficult to demould.

[0004] The utility model solves the technical problem by adopting the following solution: a large mold that is easy to demould, comprising an upper template and a lower template, wherein the upper template and the lower template are provided with a mold cavity, mounting bases are provided at both sides of the bottom of the lower template, an mounting cavity is formed between the two mounting bases, a mold opening mechanism fixedly connected to the upper template is provided on the mounting base, an air injection hole connected to the mold cavity is also provided at the bottom of the lower template, and an air pump connected to the air injection hole is provided in the mounting cavity.

[0005] By adopting the above technical solution, gas is input into the mold cavity through the air pump connected to the air injection hole, which accelerates the cooling speed of the blank and reduces the adhesion and friction with the mold cavity; then the upper mold plate is opened by the mold opening mechanism to remove the mold, which is convenient and quick.

[0006] Furthermore, the air delivery pump includes an air pump head and a driving motor for driving the air pump head, and the air pump head is provided with an air inlet and an air delivery port connected to the air injection hole.

[0007] Furthermore, the air delivery pump includes a first air pump head and a second air pump head, both of which are provided with an air inlet and an air delivery port, and the air injection holes are provided at two locations respectively disposed on both sides of the mold cavity.

[0008] By adopting the above technical solution, this driving motor is a dual-axis head motor, which can simultaneously drive two air pump heads to deliver air to the mold cavity, and the air injection holes are respectively arranged on both sides, thereby increasing the molding speed and maximizing the gas filling in the mold cavity, thereby separating the blank and the mold cavity wall.

[0009] Furthermore, the mold opening mechanism includes a mold opening frame fixedly mounted on the mounting base and located on a side away from the mounting cavity, and a hydraulic lifting component disposed on the top of the mold opening frame and the other end of which is fixedly connected to the upper mold plate.

[0010] By adopting the above technical solution, after gas is supplied, the hydraulic lifting assembly has sufficient pulling force to move the upper template upward, so that the upper template and the lower template are separated for demoulding.

[0011] Furthermore, the hydraulic lifting assembly includes fixed blocks fixedly mounted on both sides of the upper mold plate and a lifting rod inserted into the top of the fixed blocks, and the other end of the lifting rod is fixedly connected to the top of the mold frame.

[0012] By adopting the above technical solution, the setting of the fixed blocks on both sides allows the upper template to be lifted and lowered horizontally without causing offset, keeping the mold opening process smooth.

[0013] Furthermore, a guide rod is provided at an angle end of the lower template, and a guide cylinder column adapted to the guide rod is provided at a corresponding angle end of the upper template.

[0014] By adopting the above technical solution, the relative position between the upper template and the lower template is made more precise, thus preventing workpiece errors or mold damage caused by offset; and the upper template and the lower template are easier to align during disassembly and installation, thereby simplifying the mold assembly process and improving work efficiency.

[0015] Furthermore, a through hole for facilitating casting is provided at the center of the top of the mold frame.

[0016] By adopting the above technical solution, the pouring tool can pour into the mold cavity through the through hole.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the utility model inputs gas into the mold cavity through an air pump connected to the air injection hole at the bottom, thereby accelerating the cooling speed of the blank and filling the gap to reduce the adhesion and friction between the blank and the mold cavity, and then the heavy upper mold plate is vertically and stably opened for demolding through the hydraulic lifting assembly fixed to both sides of the upper mold plate.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0020] Figure 2 is a bottom schematic diagram of this embodiment;

[0021] Figure 3 It is an exploded view of this embodiment.

[0022] In the figure: 1. upper template; 2. lower template; 3. mold cavity; 4. mounting base; 5. mounting cavity; 6. air injection hole; 7. air pump; 71. first air pump head; 72. second air pump head; 73. air inlet; 74. air outlet; 8. drive motor; 9. mold opening mechanism; 91. mold opening frame; 92. fixing block; 93. lifting rod; 10. guide rod; 11. guide cylinder column; 12. through hole. DETAILED DESCRIPTION

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0024] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "top", "inside", "outside" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the 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 position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise specified, "plurality" means two or more.

[0025] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0026] like Figures 1 to 3 As shown, a large mold that is easy to demold provides a mold that can solve the problems of slow molding and difficult demolding of large molds. The present embodiment includes an upper mold plate 1 and a lower mold plate 2, wherein the upper mold plate 1 is located above the lower mold plate 2; and a mold cavity 3 is provided in both the upper mold plate 1 and the lower mold plate 2, and mounting bases 4 are provided on both sides of the bottom of the lower mold plate 2, and a mounting cavity 5 is formed between the two mounting bases 4, and a mold opening mechanism 9 fixedly connected to the upper mold plate 1 is provided on the mounting base 4, and an air injection hole 6 connected to the mold cavity 3 is provided at the bottom of the lower mold plate 2, and an air pump 7 connected to the above-mentioned air injection hole 6 is provided in the mounting cavity 5.

[0027] In this embodiment, an air pump 7 is installed in the installation cavity 5 of the installation base 4 under the lower template 2, and an air injection hole 6 is provided at the bottom of the lower template 2, so that the output end of the air pump 7 is connected to the mold cavity 3, and gas (which can be inert gas, compressed gas or cold air) is input into the mold cavity 3; the cooling speed of the blank is effectively accelerated, and the plastic product solidifies and solidifies faster, thereby improving production efficiency. In addition, the injected gas can form a certain air pressure inside the plastic product, thereby separating it from the wall of the mold cavity 3, reducing adhesion and friction, and facilitating mold removal; and then the upper template 1 is uncovered by the mold opening mechanism 9 for mold removal, so that rapid and easy demolding is achieved, which is convenient and quick.

[0028] like Figure 2 As shown, the air delivery pump 7 of this embodiment includes an air pump head and a driving motor 8 for driving the air pump head. The air pump head is provided with an air inlet 73 and an air delivery port 74 connected to the air injection hole 6. Further, the air delivery pump 7 is a double-headed air delivery pump 7 including a first air pump head 71 and a second air pump head 72 respectively located at both ends, and the first air pump head 71 and the second air pump head 72 are both provided with an air inlet 73 and an air delivery port 74. The driving motor 8 is a double-axis head motor, which can simultaneously drive two air delivery pumps 7 to deliver air to the mold cavity 3; achieving rapid and uniform air injection can improve the efficiency of the injection molding process and product quality, and can meet different production requirements. In addition, the air injection holes 6 at the bottom of the lower template 2 are also provided at two locations and are respectively provided on both sides of the mold cavity 3, which effectively increases the molding speed and maximizes the gas filling in the mold cavity 3, achieves uniform gas distribution, avoids the problem of gas accumulation or uneven injection, improves the quality and consistency of the molded product, and separates the blank from the wall of the mold cavity 3.

[0029] like Figure 1 As shown, the mold opening mechanism 9 of this embodiment includes a mold opening frame 91 fixedly mounted on the above-mentioned mounting base 4 and located on a side away from the mounting cavity 5, and a hydraulic lifting component arranged on the top of the mold opening frame 91 and the other end of which is fixedly connected to the upper template 1. Specifically, this hydraulic lifting component includes two fixed blocks 92 embedded in both sides of the upper template 1 to achieve a fixing effect and a lifting rod 93 inserted on the top of the fixed block 92. The other end of this lifting rod 93 is fixedly connected to the top of the mold opening frame 91, and is lifted and lowered in the space between the top of the mold opening frame 91 and the upper template 1. After the above-mentioned air supply pump 7 supplies air, the hydraulic rod has enough lifting force to move the upper template 1 upward, so that the upper template 1 and the lower template 2 are separated for demolding, and the setting of the fixed blocks 92 on both sides allows the upper template 1 to be lifted and displaced horizontally without offset to keep the mold opening process smooth.

[0030] like Figure 3As shown, a guide rod 10 is provided at the corner end of the lower template, and a guide cylinder 11 adapted to the guide rod 10 is provided at the corresponding corner end of the upper template 1, and the guide cylinder 11 is movably sleeved in the guide column. By inserting the guide components in the upper and lower templates 2, the relative position between the upper template 1 and the lower template 2 is made more accurate, preventing workpiece errors or mold damage caused by offset; and the upper template 1 and the lower template 2 are easier to align when disassembling and installing, thereby simplifying the mold assembly process and improving work efficiency.

[0031] like Figure 1 As shown, in this embodiment, a through hole 12 is further provided at the center of the top of the above-mentioned mold frame 91 for facilitating casting; when the gate is on the upper template 1 or on the casting plate, the through hole 12 can facilitate the casting tool to cast from the through hole 12 into the mold cavity 3, avoiding the mold frame 91 blocking the casting tool from working.

[0032] The working principle of this embodiment is: in this embodiment, gas is uniformly input into the mold cavity 3 through a double-axis air pump 7 connected to the air injection hole 6 at the bottom of the lower mold plate 2, thereby accelerating the cooling speed of the blank and filling the gap to reduce the adhesion and friction between the blank and the mold cavity 3, and then the heavy upper mold plate 1 is vertically and stably opened through the hydraulic lifting assembly fixed on both sides of the upper mold plate 1 for demolding.

[0033] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A large mold that is easy to demould, comprising an upper mold plate and a lower mold plate, wherein the upper mold plate and the lower mold plate are provided with a mold cavity, characterized in that: Mounting bases are provided on both sides of the bottom of the lower template, and a mounting cavity is formed between the two mounting bases. A mold opening mechanism fixedly connected to the upper template is provided on the mounting base. An air injection hole connected to the mold cavity is also provided at the bottom of the lower template, and an air pump connected to the air injection hole is provided in the mounting cavity.

2. The large-scale mold that is easy to demould according to claim 1, characterized in that: The air delivery pump comprises an air pump head and a driving motor for driving the air pump head. The air pump head is provided with an air inlet and an air delivery port connected to the air injection hole.

3. The large-scale mold that is easy to demould according to claim 2, characterized in that: The air delivery pump comprises a first air pump head and a second air pump head, both of which are provided with an air inlet and an air delivery port, and the air injection holes are provided at two locations respectively disposed on both sides of the mold cavity.

4. The large-scale mold that is easy to demould according to claim 3, characterized in that: The mold opening mechanism comprises a mold opening frame fixedly mounted on the mounting base and located on a side away from the mounting cavity, and a hydraulic lifting component disposed on the top of the mold opening frame and the other end of which is fixedly connected to the upper mold plate.

5. The large-scale mold that is easy to demould according to claim 4, characterized in that: The hydraulic lifting assembly includes fixed blocks fixedly arranged on both sides of the upper template and a lifting rod inserted on the top of the fixed block, and the other end of the lifting rod is fixedly connected to the top of the mold opening frame.

6. The large-scale mold that is easy to demould according to claim 5, characterized in that: A guide rod is provided at an angle end of the lower template, and a guide cylinder column adapted to the guide rod is provided at a corresponding angle end of the upper template.

7. The large-scale mold that is easy to demould according to claim 6, characterized in that: A through hole for convenient casting is also provided at the center of the top of the mold frame.

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