A molding device

Abstract

The utility model discloses a molding device, comprising: a base plate; a sub-driving member, which is arranged on the base plate, the sub-driving member is transmission-connected with a support plate, the sub-driving member can drive the support plate to move up and down, and an avoidance through hole is arranged on the support plate; an outer mold, which is connected to the top side of the support plate, and a mold cavity with an opening upward is formed in the outer mold; a lower pressing member, which is located in the mold cavity; an upper pressing member, which can enter and exit the mold cavity; a main driving member, which is arranged on the base plate, and the driving end of the main driving member can pass through the avoidance through hole and drive the lower pressing member to move upward; a top plate, which is located above the outer mold, and the bottom side of the top plate is connected with a pressing cylinder, and the bottom end of the pressing cylinder can be against the upper pressing member. The utility model only needs to configure the main driving member as a pressurized driving source to realize two-way pressure on the material, which not only improves the processing efficiency and quality, but also better controls the manufacturing cost of the whole machine and improves the production efficiency.

Description

Technical Field

[0001] The utility model relates to plastic processing equipment, in particular to molding equipment. Background Art

[0002] When processing plastics, such as polytetrafluoroethylene, due to the extremely low melt index of polytetrafluoroethylene, it cannot be processed by common plastic processing processes such as injection molding. Therefore, it is necessary to use hydraulic equipment for cold molding and then hot sintering. For polytetrafluoroethylene products with larger volume or higher height, in order to evenly transmit pressure and achieve consistent internal density of the product, the material in the mold usually needs to be pressurized in both directions during the molding process. There are currently two known methods for achieving bidirectional pressure. One is that the hydraulic equipment is a single cylinder. After the pressure in one direction is completed during the production process, the mold is turned over and pressed again from the other direction, thereby achieving bidirectional pressure on the product. However, this method has low production efficiency and is difficult to improve economic benefits. The other is to set two upper and lower cylinders on the hydraulic equipment to pressurize the material in the mold from two directions of the mold to achieve bidirectional pressure. However, due to the high driving performance requirements when pressurizing the material, the required cylinder cost is also high, resulting in a high overall equipment cost and high production energy consumption. Therefore, there is an urgent need for a device that can improve the efficiency of plastic molding processing and reduce the production cost of the equipment. Utility Model Content

[0003] The utility model aims to provide a molding 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 utility model to solve the technical problem is:

[0005] A molding device comprises: a base plate; a sub-driver, which is arranged on the base plate, the sub-driver is connected to a support plate, the sub-driver can drive the support plate to move up and down, and the support plate is provided with an avoidance through hole; an outer mold, which is connected to the top side of the support plate, and a mold cavity opening upward is formed in the outer mold; a lower pressure member, which is located in the mold cavity; an upper pressure member, which can enter and exit the mold cavity; a main driver, which is arranged on the base plate, the driving end of the main driver can pass through the avoidance through hole and drive the lower pressure member to move upward; a top plate, which is located above the outer mold, the bottom side of the top plate is connected to a pressing cylinder, and the bottom end of the pressing cylinder can abut against the upper pressure member.

[0006] This technical solution has at least the following beneficial effects: in the initial state, the main driving member and the sub-driving member are both located at the low position of the stroke, and the upper pressing member is located outside the mold cavity. Before processing, the material is first filled into the mold cavity formed by the outer mold. After the material is filled in the space above the lower pressing member, the upper pressing member enters the mold cavity, and the upper pressing member and the lower pressing member are used to seal the material in the mold cavity up and down. Then the sub-driving member drives the support plate to move up. At this time, the outer mold, the upper pressing member and the lower pressing member are also driven to move up. When the bottom end of the pressing cylinder is against the upper pressing member, the support plate stops moving, and the driving end of the main driving member moves upward again to press the lower pressing member upward. In this process, the upper pressing member is subjected to the reaction force of the pressing cylinder and presses the material downward. The lower pressing member is in the main driving member The driving end of the moving part presses the material upward under the action of upward pressure, thereby realizing two-way pressurization of the material and improving the processing effect of the material. After completion, the driving end of the main driving part moves down and resets, and the sub-driving part also drives the pallet to move down and reset. When the pallet moves down to its position, the driving end of the main driving part moves upward, and the formed mouth and the upper pressing part are ejected from the top of the mold cavity through the lower pressing part to facilitate material unloading. Finally, the driving end of the driving part moves down and resets again to prepare for the next molding process. In this molding equipment, only the main driving part needs to be configured as the driving source for pressurization to realize two-way pressure on the material, which not only improves the processing efficiency and quality, but also better controls the manufacturing cost of the whole machine and improves production efficiency.

[0007] As a further improvement of the above technical solution, the driving end of the main driving member is connected with a flange, the flange is located at the bottom side of the lower pressure member, and the outer diameter of the flange is larger than the inner diameter of the avoidance through hole. Since the outer diameter of the flange is large and the flange is fixed on the driving end of the main driving member, when the sub-driving member drives the support plate to move upward, the driving end of the main driving member can be directly driven to move upward through the flange, so that the support plate and the driving end of the main driving member can be easily synchronized. When the material needs to be pressurized, the driving end of the main driving member can directly press the lower pressure member upward.

[0008] As a further improvement of the above technical solution, the upper pressing piece is connected to the bottom end of the pressing cylinder. The upper pressing piece is directly fixed to the bottom end of the pressing cylinder, and no external force is required to put it into or take it out of the mold cavity. When working, after the material is filled in the mold cavity, when the support plate drives the outer mold to move upward to the pressing cylinder, the upper pressing piece moves downward relative to the outer mold into the mold cavity, thereby sealing the upper part of the mold cavity, and then the main driving part drives the lower pressing piece to move upward to pressurize the material. After the molding process is completed, the support plate moves downward, and at this time, the upper pressing piece withdraws upward from the mold cavity relative to the outer mold, so that the upper pressing piece can enter and exit the mold cavity.

[0009] As a further improvement of the above technical solution, the driving end of the main driving member is connected to an inner mold, the lower pressing member is provided with a first through hole for avoiding the inner mold, and the upper pressing member is provided with a second through hole for avoiding the inner mold. The driving end of the main driving member is also connected to an inner mold for auxiliary molding of the product, and the inner mold directly extends upward from the first through hole into the mold cavity. When the upper pressing member closes the mold cavity, the top of the inner mold also extends upward into the second through hole. When the driving end of the main driving member moves upward, the inner mold also passes through the second through hole relatively upward, and the second through hole is used to avoid the position of the inner mold.

[0010] As a further improvement of the above technical solution, a first mounting hole is provided on the base plate, and the fixed end of the main driving member can pass downward through the first mounting hole. When installing the main driving member, the fixed end of the main driving member is passed downward through the first mounting hole, which can reduce the installation space required for the main driving member above the base plate, making the overall structure more compact.

[0011] As a further improvement of the above technical solution, two sub-drivers are symmetrically arranged on both sides of the main driver. When the pallet needs to be driven to move up and down, the two sub-drivers evenly apply force upward on the two sides of the pallet, which can improve the stability of driving the pallet to move up and down.

[0012] As a further improvement of the above technical solution, a second mounting hole is provided on the substrate, and the fixed end of the sub-driver can pass downward through the second mounting hole. Similarly, when installing the sub-driver, the fixed end of the sub-driver is passed downward through the second mounting hole, which can reduce the installation space required for the sub-driver above the substrate, making the overall structure more compact.

[0013] As a further improvement of the above technical solution, the driving end of the main driving member and the driving end of the sub-driving member are respectively connected with a stroke sensor. When the driving end of the main driving member moves up and down and when the support plate moves, the stroke sensor can be used to conveniently monitor the height of its activity, thereby improving the accuracy of pressing the material through the lower pressing member, and determining the relative position of the pressing cylinder and the mold, so as to facilitate the automatic control of the material pressing action.

[0014] As a further improvement of the above technical solution, a force output monitoring device is provided on the main driving member, and the force output monitoring device is used to monitor the output force value of the main driving member on the lower pressing member. When the driving end of the main driving member presses the material upward, the pressure sensor can be used to conveniently monitor the pressure value of the lower pressing member pressing the material upward, so that the force applied to the material can be better controlled and the quality of pressurizing the material can be improved.

[0015] As a further improvement of the above technical solution, a locking device is provided between the substrate and the support plate, and the locking device can limit or release the relative displacement between the substrate and the support plate. After the molding process is completed, the driving end of the main driving member needs to move upward to lift the molded product upward out of the mold cavity. In this process, the relative displacement between the substrate and the support plate is limited by the locking device, which can effectively prevent the outer mold from moving upward together with the product, driving the support plate to move upward as well, so that the product can smoothly escape from the mold cavity upward. After the material is unloaded, the locking device is again released to release the displacement restriction between the substrate and the support plate to prevent the subsequent processing from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, 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 It is a schematic diagram of the overall structure of the utility model when the upper pressing piece exits the mold cavity.

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model when the upper pressing piece enters the mold cavity.

[0019] In the accompanying drawings: 100 - base plate, 200 - sub-driving member, 210 - supporting plate, 300 - outer mold, 400 - lower pressing member, 500 - upper pressing member, 600 - main driving member, 610 - flange, 620 - inner mold, 700 - top plate, 710 - pressing cylinder. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, 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, 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 cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include 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.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Reference Figure 1 and Figure 2 A molding device includes a substrate 100, a sub-driving member 200, an outer mold 300, a lower pressing member 400, an upper pressing member 500 and a top plate 700, wherein the sub-driving member 200 is arranged on the substrate 100, the sub-driving member 200 is connected to a support plate 210, the sub-driving member 200 can drive the support plate 210 to move up and down, and the support plate 210 is provided with an avoidance through hole; the outer mold 300 is connected to the top side of the support plate 210, and a mold cavity opening upward is formed in the outer mold 300; the lower pressing member 400 is located in the mold cavity; the upper pressing member 500 The pressing piece 500 can enter and exit the mold cavity. In actual application, the upper pressing piece 500 can be driven by an external driving piece to move in and out of the mold cavity, or it can be directly put into or taken out of the mold cavity manually; the main driving piece 600 is arranged on the substrate 100, and the driving end of the main driving piece 600 can pass through the avoidance hole and drive the lower pressing piece 400 to move upward; the top plate 700 is located above the outer mold 300, and the bottom side of the top plate 700 is connected to a pressing cylinder 710, and the bottom end of the pressing cylinder 710 can be against the upper pressing piece 500.

[0025] As can be seen from the above, in the initial state, the main driving member 600 and the sub-driving member 200 are both located at the low position of the stroke, and the upper pressing member 500 is located outside the mold cavity. Before processing, the material is first filled into the mold cavity formed by the outer mold 300. After the material is filled in the space above the lower pressing member 400, the upper pressing member 500 enters the mold cavity, and the upper pressing member 500 and the lower pressing member 400 are used to block the material in the mold cavity up and down, and then the sub-driving member 200 drives the support plate 210 to move upward. At this time, the outer mold 300, the upper pressing member 500 and the lower pressing member 400 are also driven to move upward. When the bottom end of the pressing cylinder 710 is against the upper pressing member 500, the support plate 210 stops moving, and the driving end of the main driving member 600 moves upward again to press the lower pressing member 400 upward. In this process, the upper pressing member 500 is subjected to the reaction force of the pressing cylinder 710 and the material The lower pressing member 400 presses the material upward under the action of the upward pressing of the driving end of the main driving member 600, thereby realizing two-way pressure on the material and improving the material processing effect. After completion, the driving end of the main driving member 600 moves down and resets, and the sub-driving member 200 also drives the support plate 210 to move down and reset. When the support plate 210 moves down to its position, the driving end of the main driving member 600 moves upward, and the formed mouth and the upper pressing member 500 are ejected from the top of the mold cavity through the lower pressing member 400 to facilitate material unloading. Finally, the driving end of the driving member moves down and resets again to prepare for the next molding process. In this molding equipment, only the main driving member 600 needs to be configured as a pressurized driving source to realize two-way pressure on the material, which not only improves the processing efficiency and quality, but also better controls the manufacturing cost of the whole machine and improves production efficiency.

[0026] In the above embodiment, when the support plate 210 moves upward, it will drive the outer mold 300 to move upward synchronously. At this time, in order to keep the driving end of the main driving member 600 to close the lower pressure member 400 to the bottom position of the mold cavity, the movable end of the main driving member 600 also needs to rise synchronously. Therefore, in order to better control the synchronous upward movement of the lower pressure member 400 and the outer mold 300, in this embodiment, the driving end of the main driving member 600 is connected to a flange 610, and the flange 610 is located on the bottom side of the lower pressure member 400, and the outer diameter of the flange 610 is larger than the inner diameter of the avoidance through hole. Since the outer diameter of the flange 610 is relatively large and the flange 610 is fixed on the driving end of the main driving component 600, when the sub-driving component 200 drives the support plate 210 to move upward, the driving end of the main driving component 600 can be directly driven to move upward through the flange 610. In this way, the support plate 210 and the driving end of the main driving component 600 can be easily moved synchronously. When the material needs to be pressurized, the driving end of the main driving component 600 can directly press the lower pressing component 400 upward to apply force.

[0027] In practical applications, the main driving component 600 and the sub-driving component 200 are both used to provide driving force for movement in the up and down directions. There are many structural forms, such as electric screws, cylinders or hydraulic cylinders. For example, the main driving component 600 can use a hydraulic cylinder to provide stable and large pressure.

[0028] In the above embodiment, if it is necessary to take the upper pressing piece 500 out of the mold cavity, it can be realized by an external driving source or direct manual operation. In the present embodiment, the upper pressing piece 500 is connected to the bottom end of the pressing cylinder 710. The upper pressing piece 500 is directly fixed to the bottom end of the pressing cylinder 710, and no external force is required to put it into or take it out of the mold cavity. When working, after the material is filled in the mold cavity, when the support plate 210 drives the outer mold 300 to move upward to the pressing cylinder 710, the upper pressing piece 500 moves downward relative to the outer mold 300 into the mold cavity, thereby closing the upper part of the mold cavity, and then the main driving part 600 drives the lower pressing piece 400 to move upward to pressurize the material. After the molding process is completed, the support plate 210 moves downward, and the upper pressing piece 500 withdraws upward from the mold cavity relative to the outer mold 300, so that the upper pressing piece 500 can enter and exit the mold cavity.

[0029] When the material is formed in the mold cavity, part of the mold needs to be provided with an auxiliary mold in the mold cavity. Therefore, the part of the mold can be provided on the movable end of the main driving member 600, that is, the inner mold 620 is connected to the driving end of the main driving member 600, the lower pressing member 400 is provided with a first through hole for avoiding the inner mold 620, and the upper pressing member 500 is provided with a second through hole for avoiding the inner mold 620. The driving end of the main driving member 600 is also connected with the inner mold 620 for auxiliary molding of the product. The inner mold 620 directly extends upward from the first through hole into the mold cavity. When the upper pressing member 500 closes the mold cavity, the top of the inner mold 620 also extends upward into the second through hole. When the driving end of the main driving member 600 moves upward, the inner mold 620 also passes through the second through hole relatively upward, and the position of the inner mold 620 is avoided by using the second through hole.

[0030] The main driver 600 and the sub-driver 200 can be installed on the top side of the substrate 100, but this will take up more space, resulting in the outer mold 300 being too high. Therefore, in this embodiment, a first mounting hole is provided on the substrate 100, and the fixed end of the main driver 600 can pass downward through the first mounting hole. When installing the main driver 600, the fixed end of the main driver 600 is passed downward through the first mounting hole, which can reduce the installation space required for the main driver 600 above the substrate 100, making the overall structure more compact.

[0031] There are many driving modes for driving the pallet 210 to move up and down, for example, directly using one sub-driving member 200 to drive the pallet 210 to move, or using two or three, etc. In this embodiment, two sub-driving members 200 are symmetrically arranged on both sides of the main driving member 600. When it is necessary to drive the pallet 210 to move up and down, the two sub-driving members 200 evenly apply force upward on the two sides of the pallet 210, so that the stability of driving the pallet 210 to move up and down can be improved.

[0032] Similarly, the sub-driver 200 can be installed on the substrate 100 or on the top plate 700. When the sub-driver 200 is installed on the substrate 100, a second mounting hole is provided on the substrate 100, and the fixed end of the sub-driver 200 can be passed downward through the second mounting hole. When installing the sub-driver 200, the fixed end of the sub-driver 200 is passed downward through the second mounting hole. This can reduce the installation space required for the sub-driver 200 above the substrate 100, making the overall structure more compact.

[0033] In some embodiments, the driving end of the main driving member 600 and the driving end of the sub-driving member 200 are respectively connected with a stroke sensor. When the driving end of the main driving member 600 moves up and down and when the support plate 210 moves, the stroke sensor can be used to conveniently monitor the height of its movement, so as to improve the accuracy of the material pressure applied by the lower pressing member 400, determine the relative position of the pressing cylinder 710 and the mold, and facilitate the automatic control of the material pressure action.

[0034] In some embodiments, a force output monitoring device is provided on the main driving member 600, and the force output monitoring device is used to monitor the output force value of the main driving member 600 on the lower pressing member 400. The force output monitoring device can be a pressure sensor or a torque sensor. When the driving end of the main driving member 600 presses the material upward, the pressure sensor can be used to conveniently monitor the pressure value of the lower pressing member 400 pressing the material upward, so that the force applied to the material can be better controlled and the quality of pressurizing the material can be improved.

[0035] In order to realize stable demoulding of the product, in this embodiment, a locking device is provided between the substrate 100 and the support plate 210, and the locking device can limit or release the relative displacement between the substrate 100 and the support plate 210. In practical applications, the locking device can be a fastener, screw or latch connected between the substrate 100 and the support plate 210, which is manually operated by a worker, or a solenoid valve, an electric lock, etc. After the molding process is completed, it is necessary to move the driving end of the main driving member 600 upward to lift the molded product upward out of the mold cavity. In this process, the relative displacement between the substrate 100 and the support plate 210 is limited by the locking device, which can effectively prevent the outer mold 300 from moving upward together with the product, driving the support plate 210 to move upward as well, so that the product can smoothly be ejected from the mold cavity upward. After the material is unloaded, the locking device is again released to release the displacement restriction between the substrate 100 and the support plate 210 to prevent the subsequent processing from being affected.

[0036] The above embodiments only describe the mechanical components and operating principles of the equipment. The specific actions can be controlled by various operating methods, such as manual operation, electronic control operation or program control operation. Since the control technologies are all publicly known technologies, this patent will not elaborate on them.

[0037] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A molding device, characterized in that: include: substrate(100); A sub-driving member (200) is arranged on the substrate (100), the sub-driving member (200) is connected to a support plate (210), the sub-driving member (200) can drive the support plate (210) to move up and down, and an avoidance through hole is arranged on the support plate (210); An outer mold (300) is connected to the top side of the support plate (210), and a mold cavity opening upward is formed in the outer mold (300); A lower pressing piece (400) is located in the mold cavity; An upper pressing piece (500) capable of entering and exiting the mold cavity; A main driving member (600) is arranged on the base plate (100), and a driving end of the main driving member (600) can pass through the avoidance through hole and drive the pressing member (400) to move upward; The top plate (700) is located above the outer mold (300), and the bottom side of the top plate (700) is connected to a pressing cylinder (710), and the bottom end of the pressing cylinder (710) can abut against the upper pressing piece (500).

2. A molding device according to claim 1, characterized in that: The driving end of the main driving member (600) is connected to a flange (610), the flange (610) is located on the bottom side of the pressing member (400), and the outer diameter of the flange (610) is greater than the inner diameter of the avoidance through hole.

3. A molding device according to claim 1, characterized in that: The upper pressing member (500) is connected to the bottom end of the pressing cylinder (710).

4. A molding device according to claim 1, characterized in that: The driving end of the main driving member (600) is connected to an inner mold (620), the lower pressing member (400) is provided with a first through hole for avoiding the inner mold (620), and the upper pressing member (500) is provided with a second through hole for avoiding the inner mold (620).

5. A molding device according to claim 1, characterized in that: The base plate (100) is provided with a first mounting hole, and the fixed end of the main driving component (600) can pass downward through the first mounting hole.

6. A molding device according to claim 1, characterized in that: Two sub-driving members (200) are symmetrically arranged on both sides of the main driving member (600).

7. A molding device according to claim 1, characterized in that: The base plate (100) is provided with a second mounting hole, and the fixed end of the sub-driving member (200) can pass downward through the second mounting hole.

8. A molding device according to claim 1, characterized in that: The driving end of the main driving member (600) and the driving end of the sub-driving member (200) are respectively connected to travel sensors.

9. A molding device according to claim 1, characterized in that: The main driving member (600) is provided with a force output monitoring device, and the force output monitoring device is used to monitor the output force value of the main driving member (600) on the pressing member (400).

10. A molding device according to claim 1, characterized in that: A locking device is provided between the base plate (100) and the support plate (210), and the locking device can limit or release the relative displacement between the base plate (100) and the support plate (210).

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