Injection-molded pressure regulating device

Abstract

The utility model relates to injection equipment technical field especially, it relates to a kind of injection molding pressure regulating device.It mainly aims at the common injection molding mostly controls injection speed to complete the regulation to injection pressure, due to the fixedness of feed and discharge hole, leading to the amount of its feeding and discharging difficult to control, when the difference of feed and discharge flow is generated, it is prone to reduce injection molding product quality problem, the following technical scheme is proposed: including workbench, plastic device and controller, the top wall of workbench is equipped with heating conveying container, conveying assembly is equipped on the heating conveying container, first rotating assembly is equipped at the discharge port of heating conveying container.The utility model realizes the timely adjustment of automatic to extrusion pressure and feeding and discharging condition, improves the pressure uniformity when operating, reduces the influence of pressure unevenness on subsequent finished product quality.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to an injection molding pressure regulating device. Background Technology

[0002] Injection molding is a manufacturing process in which thermoplastic or thermosetting plastic materials are melted, injected into a mold under pressure, and then cooled and solidified to obtain a product of a specific shape. Screw injection molding equipment is a commonly used injection molding device. Plastic granules are fed into the barrel through a hopper, and the screw rotates and propels them forward. The plastic granules are heated and melted inside the barrel, while the screw threads push the molten plastic towards the screw tip, allowing the raw material to enter the molding equipment and complete the injection molding process. Furthermore, adjusting the screw speed allows for regulation of the injection pressure, which helps improve the uniformity of pressure on the molded product and reduces the impact of uneven pressure on the quality of the finished product.

[0003] However, most common injection molding processes control the injection speed to regulate the injection pressure. Due to the fixed inlet and outlet holes, it is difficult to control the amount of material entering and leaving the injection site. When there is a difference between the inlet and outlet flow rates, it is easy to reduce the quality of the injection molded product. In view of this, we propose an injection molding pressure regulating device. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an injection molding pressure regulating device.

[0005] The technical solution of this utility model is as follows: An injection molding pressure regulating device includes a worktable, a molding device, and a controller. A heated conveying container is installed on the top wall of the worktable. A conveying assembly is installed on the heated conveying container. A first rotating assembly is installed at the outlet of the heated conveying container. The first rotating assembly includes a first perforated disc. A first gear is sleeved on the outer surface wall of the first perforated disc. A transmission assembly is arranged above the first gear. A guide pipe is connected to the inlet of the heated conveying container. The transmission assembly includes a first rotating shaft. A second gear is sleeved on the outer surface wall of the first rotating shaft. A drive assembly is arranged above the second gear. The drive assembly includes a forward and reverse motor. The output end of the forward and reverse motor is connected to the second rotating shaft. A third gear and a first bevel gear are sleeved on the outer surface wall of the second rotating shaft. A second rotating assembly is arranged at the first bevel gear. An orifice plate flow meter is arranged below the second rotating assembly. An inlet pipe is connected to the side wall of the guide pipe. A flip-over cover plate is provided at the inlet of the inlet pipe.

[0006] Preferably, the conveying assembly includes a motor, the output end of which is connected to a feeding screw, the feeding screw being disposed in the inner cavity of the heated conveying container, and a motor mount being installed on the outer wall of the heated conveying container, the motor being mounted on the motor mount.

[0007] Preferably, the bottom wall of the molding device is symmetrically welded with support legs, and the bottom ends of the two support legs are connected to the top wall of the worktable at the notch.

[0008] Preferably, sealing rings are symmetrically installed on both sides of the first perforated disc, and sealing grooves are symmetrically opened at the outlet end of the heating conveying container and the inlet end of the molding device, with the two sealing rings respectively inserted into the corresponding grooves.

[0009] Preferably, bearing seats are connected to both ends of the first rotating shaft, and the two bearing seats are symmetrically installed on the opposite wall of the molding device and the guide tube, and the second gear meshes with the first gear.

[0010] Preferably, the drive assembly further includes auxiliary components, two of which are respectively installed on the top wall of the molding device and the guide tube. Each of the two auxiliary components has a first rotating hole, and a bearing is arranged in each of the two first rotating holes. The two bearings are sleeved on the outer surface wall of the second rotating shaft.

[0011] Preferably, the second rotating assembly includes a third rotating shaft, the bottom end of which is connected to a second perforated disc, which is disposed at the top of the orifice plate flow meter, which is located inside the feed tube.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This invention utilizes a motor to drive the feeding screw, allowing the extrusion pressure to be adjusted under the control of a controller. Simultaneously, driven by forward and reverse motors, the third, second, and first gears transmit power, thereby rotating the first perforated disc. This allows for the adjustment of the openings on the first perforated disc. Furthermore, with the first and second bevel gears meshing, the third rotating shaft drives the second perforated disc to follow the adjustment of the first perforated disc, achieving synchronized adjustment of the openings on both discs. This facilitates adjustment of the discharge diameter based on changes in the feeding conditions, allows for convenient adjustment of the discharge pressure in conjunction with the conveying components, enables timely adjustments according to extrusion requirements, and improves pressure uniformity during the extrusion process, reducing the risk of uneven pressure affecting the quality of the finished product. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an injection molding pressure regulating device;

[0015] Figure 2 yes Figure 1 A schematic diagram of the frontal cross-sectional structure;

[0016] Figure 3 yes Figure 1 A schematic diagram of the unfolded structure of the first rotating component;

[0017] Figure 4 yes Figure 1 A three-dimensional structural diagram of the second rotating component.

[0018] Reference numerals: 1. Workbench; 2. Molding device; 3. Heating and conveying container; 4. Conveying assembly; 41. Motor; 42. Feeding screw; 43. Motor base; 5. First rotating assembly; 51. First perforated disc; 52. Sealing ring; 53. First gear; 6. Guide pipe; 7. Transmission assembly; 71. First rotating shaft; 72. Second gear; 73. Bearing seat; 74; 8. Drive assembly; 81. Second rotating shaft; 82. Auxiliary component; 83. Third gear; 84. First bevel gear; 85. Forward and reverse motor; 9. Second rotating assembly; 91. Third rotating shaft; 92. Second bevel gear; 93. Second perforated disc; 10. Feed pipe; 11. Cover plate; 12. Controller; 13. Support leg; 14. Orifice plate flow meter. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example

[0021] like Figures 1 to 4 As shown, this utility model proposes an injection molding pressure regulating device, including a worktable 1, a molding device 2, and a controller 12. The bottom end of the support leg 13 connected to the bottom of the molding device 2 is fixedly connected to the top wall of the notch of the worktable 1. Part of the bottom structure of the molding device 2 is fixedly connected to the top wall of the worktable 1, providing support for the molding device 2. The controller 12 is fixedly installed on the wall facing the molding device 2 for easy operation by the operator. The heating conveying container 3 is installed on the top wall of the worktable 1, and the guide pipe 6 is fixedly installed on the top of the heating conveying container 3. At the feed inlet of the part, the feed pipe 10 is fixedly installed at the opening on the side wall of the guide pipe 6, so that the material can be easily guided into the inner cavity of the heating and conveying container 3 through the guide pipe 6 for heating and extrusion conveying; the side wall of the cover plate 11 is connected to a hinge, and part of the hinge is fixedly connected to the outer wall of the feed pipe 10, which helps the cover plate 11 to flip, which is beneficial to block the top opening of the feed pipe 10 during operation, and conversely, facilitates the guiding of material into the feed pipe 10. The feed pipe 10 can be used with the existing guiding device to introduce injection molding material into the heating and conveying container 3.

[0022] Furthermore, the conveying assembly 4 is installed on the heated conveying container 3. The conveying assembly 4 includes a motor 41, a feeding screw 42, and a motor base 43. The motor 41 and the motor base 43 are both installed on the outer wall of the heated conveying container 3. The motor 41 is also installed on the top wall of the motor base 43, which supports the motor 41. The feeding screw 42 is located in the inner cavity of the heated conveying container 3. A second rotating hole is provided on the side wall of the heated conveying container 3. A first sealed bearing is installed in the second rotating hole. The first sealed bearing is sleeved on the outer surface wall of the protruding structure of the feeding screw 42. The end of the protruding structure of the feeding screw 42 is also connected to the output end of the motor 41, which is beneficial for the feeding screw 42 to convey and inject the heated raw material under the drive of the motor 41.

[0023] Furthermore, the first rotating assembly 5 is installed between the outlet end of the heating conveying container 3 and the inlet end of the molding device 2. The first rotating assembly 5 includes a first perforated disc 51, a sealing rotating ring 52, and a first gear 53. The two sealing rotating rings 52 are symmetrically installed on the two side walls of the first perforated disc 51. Rotating grooves are symmetrically opened at the inlet of the molding device 2 and the outlet of the heating conveying container 3. The two sealing rotating rings 52 are respectively inserted into the corresponding rotating grooves to assist the rotation of the first perforated disc 51 and also to provide a sealing function. The first gear 53 is sleeved on the outer surface wall of the first perforated disc 51, which is beneficial for driving the first perforated disc 51 to rotate in the future.

[0024] Furthermore, the transmission assembly 7 is located on the opposite wall of the molding device 2 and the guide tube 6. The transmission assembly 7 includes a first rotating shaft 71, a second gear 72, and bearing seats 73. The two bearing seats 73 are symmetrically installed on the opposite wall of the molding device 2 and the guide tube 6. The two ends of the first rotating shaft 71 are connected to the rotating ends of the two bearing seats 73, and the bearing seats 73 assist the first rotating shaft 71 to rotate. The second gear 72 is fixedly sleeved on the outer surface wall of the first rotating shaft 71 and is located above the first gear 53. It also meshes with the first gear 53 to play a transmission role.

[0025] Furthermore, the drive assembly 8 is installed at the top of the guide tube 6 and the molding device 2. The drive assembly 8 includes a second rotating shaft 81, auxiliary components 82, a third gear 83, a first bevel gear 84, and a forward and reverse motor 85. The two auxiliary components 82 are installed on the top wall of the molding device 2 and the guide tube 6. The two ends of the second rotating shaft 81 are respectively inserted into the first rotating holes symmetrically opened on the two auxiliary components 82, so that the bearings in the first rotating holes are sleeved on the outer surface wall of the second rotating shaft 81, assisting the second rotating shaft 81 to rotate on the auxiliary components 82. The forward and reverse motor 85 is fixedly installed on the outer wall of one of the auxiliary components 82, and its output end is connected to the end of the second rotating shaft 81, which is conducive to driving the second rotating shaft 81 to rotate. The third gear 83 and the first bevel gear 84 are both sleeved on the outer surface wall of the second rotating shaft 81. The third gear 83 is located above the second gear 72 and meshes with the second gear 72, which facilitates driving the first rotating shaft 71 to rotate.

[0026] Furthermore, the second rotating assembly 9 is mounted on the guide tube 6. The second rotating assembly 9 includes a third rotating shaft 91, a second bevel gear 92, and a second perforated disc 93. The guide tube 6 has a third rotating hole, in which a second sealed bearing is arranged. The third rotating shaft 91 is disposed in the third rotating hole, and the second sealed bearing is sleeved on the outer surface wall of the third rotating shaft 91 to assist the rotation of the third rotating shaft 91. The second bevel gear 92 is located above the guide tube 6 and is fixedly sleeved on the outer surface wall of the third rotating shaft 91. It also meshes with the first bevel gear 84, thus... The second perforated disc 93 is located above the orifice plate flow meter 14, which is fixedly installed on the inner wall of the feed pipe 6. The inner cavity of the feed pipe 6 is cylindrical, and the orifice plate flow meter 14 has a feed port. The openings on the second perforated disc 93 and the first perforated disc 51 are distributed in a ring array on both, and are distributed from large diameter to small diameter. The openings of the same diameter are kept unobstructed, which is convenient for unified adjustment. The two ports on the orifice plate flow meter 14 have the same size as the largest diameter opening on the second perforated disc 93, which is beneficial for feeding.

[0027] In this embodiment, material is introduced into the feed pipe 6 through the open feed pipe 10, and enters the heated conveying container 3 through the opening on the second perforated disc 93 and the material inlet on the orifice plate flow meter 14. The motor 41 is started to drive the feeding screw 42 to transport the raw material, which then enters the molding device 2 through the outlet of the conveying assembly 4 and the opening on the first perforated disc 51 to achieve injection molding. When pressure needs to be adjusted, the conveying speed of the feeding screw 42 can be adjusted under the control of the controller 12. When there is a difference in the flow rate of material entering the heated conveying container 3, the forward and reverse motor 85 can be started to drive the second rotating shaft 81 to drive the third gear 83 and... The first bevel gear 84 rotates, and the first bevel gear 84, in conjunction with the second bevel gear 92, drives the third rotating shaft 91 to rotate. This allows the opening of the second perforated disc 93 to be adjusted according to the change in material flow rate, with the size of the opening corresponding to the material inlet. Under the transmission action of the second gear 72, the first gear 53 drives the first perforated disc 51 to rotate, so that the first perforated disc 51 and the second perforated disc 93 are adjusted simultaneously, achieving the purpose of synchronous adjustment. This helps to keep the inlet and outlet diameters of the second perforated disc 93 and the first perforated disc 51 in a corresponding state, facilitating the adjustment of the inlet and outlet pressures and reducing the problem of uneven inlet and outlet pressures affecting the quality of the finished product.

[0028] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An injection molding pressure regulating device, comprising a worktable (1), a molding device (2), and a controller (12), characterized in that: A heated conveying container (3) is installed on the top wall of the workbench (1). A conveying assembly (4) is installed on the heated conveying container (3). A first rotating assembly (5) is installed at the outlet of the heated conveying container (3). The first rotating assembly (5) includes a first perforated disc (51). A first gear (53) is sleeved on the outer surface wall of the first perforated disc (51). A transmission assembly (7) is arranged above the first gear (53). A guide pipe (6) is connected to the inlet of the heated conveying container (3). The transmission assembly (7) includes a first rotating shaft (71). A conveying assembly (6) is sleeved on the outer surface wall of the first rotating shaft (71). The second gear (72) is provided above the second gear (72), and the driving component (8) includes a forward and reverse motor (85). The output end of the forward and reverse motor (85) is connected to a second rotating shaft (81). A third gear (83) and a first bevel gear (84) are sleeved on the outer surface wall of the second rotating shaft (81). A second rotating component (9) is provided at the first bevel gear (84). An orifice plate flow meter (14) is arranged below the second rotating component (9). A feed pipe (10) is connected to the side wall of the guide pipe (6). A cover plate (11) that can be flipped is provided at the feed inlet of the feed pipe (10).

2. The injection molding pressure regulating device according to claim 1, characterized in that, The conveying assembly (4) includes a motor (41), the output end of which is connected to a feeding screw (42). The feeding screw (42) is disposed in the inner cavity of the heated conveying container (3). A motor mount (43) is installed on the outer wall of the heated conveying container (3), and the motor (41) is mounted on the motor mount (43).

3. The injection molding pressure regulating device according to claim 1, characterized in that, The bottom wall of the molding device (2) is symmetrically welded with support legs (13), and the bottom ends of the two support legs (13) are connected to the top wall of the worktable (1) at the notch.

4. The injection molding pressure regulating device according to claim 1, characterized in that, Sealing rings (52) are symmetrically installed on both sides of the first perforated disc (51). Sealing grooves are symmetrically opened at the outlet end of the heating conveying container (3) and the inlet end of the molding device (2). The two sealing rings (52) are respectively inserted into the grooves corresponding to their positions.

5. The injection molding pressure regulating device according to claim 1, characterized in that, The first rotating shaft (71) is connected to bearing seats (73) at both ends. The two bearing seats (73) are symmetrically installed on the opposite wall of the molding device (2) and the guide tube (6). The second gear (72) meshes with the first gear (53).

6. The injection molding pressure regulating device according to claim 1, characterized in that, The drive assembly (8) also includes auxiliary components (82). The two auxiliary components (82) are respectively installed on the top wall of the molding device (2) and the guide tube (6). The two auxiliary components (82) are provided with first rotating holes. The two first rotating holes are provided with bearings. The two bearings are sleeved on the outer surface wall of the second rotating shaft (81).

7. The injection molding pressure regulating device according to claim 1, characterized in that, The second rotating assembly (9) includes a third rotating shaft (91), the bottom end of which is connected to a second perforated disc (93), which is located at the top of the orifice plate flow meter (14), which is located inside the feed pipe (6).

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