Variable-sprue embedded side-drawing type ultrasonic plasticizing injection mold

Abstract

The invention discloses a variable-sprue inlaid side-drawing type ultrasonic plasticizing injection mold, belongs to the technical field of injection molding molds, and aims to solve the problems that an existing mold is only suitable for a single molding device, high in manufacturing cost and difficult to popularize and apply in engineering. The embedded side-pulling type mold consists of an upper mold core and a lower mold core which are respectively embedded in the upper mold and the lower mold by adopting proper conicity, and the mold is replaced by adopting side pulling; the upper mold is embedded on the movable mold plate through a bolt, and the lower mold is fixed on the fixed mold plate; different pouring gate forms are adopted and different mold cores are replaced according to the characteristics of different forming devices. According to the variable-pouring-gate embedded side-pulling type ultrasonic plasticizing injection mold, only different mold cores need to be replaced and pouring gate forms need to be changed according to forming devices, disassembly is convenient, the quality of the forming devices is high, the mold closing space is saved, the production cost is low, and therefore the injection forming efficiency is greatly improved. The variable-sprue embedded side-drawing type ultrasonic plasticizing injection mold can be directly applied to a micro injection molding machine or an ultrasonic plasticizing micro injection molding machine.

Description

Technical Field

[0001] The invention relates to an injection molding die, in particular to a variable gate inlaid side-drawing type ultrasonic plasticizing injection die, belonging to the technical field of injection molding die. Background Art

[0002] The development of micro-electromechanical systems requires a large number of micro-nano devices, which provides a broad application demand and market size for micro-nano devices. Micro injection molding is one of the main technologies for manufacturing polymer micro-nano devices. Due to the small size, complex structure and small injection flow channel of micro-nano devices, there are problems such as large mold filling resistance, uneven filling, serious material waste and poor molding quality in injection molding. High injection speed, high injection pressure, vacuum treatment and variable mold temperature can be used, but there are problems such as increased molding cycle and large mold deformation. In order to solve the above problems, ultrasonic vibration technology is applied to micro injection molding, and ultrasonic vibration is used to achieve melt plasticization of polymer particles, and plasticization and ultrasonic assisted injection molding are performed simultaneously. Ultrasonic vibration can achieve rapid melting of polymer particles, more uniform plasticization, shorten the molding cycle of micro-nano devices, reduce the degradation of molten polymer, and effectively improve the molding quality of micro-nano devices.

[0003] The injection molding mold is an important part of the ultrasonic plasticizing micro-injection molding machine. The molds in the prior art are mostly designed as an integrated unit, including a movable mold and a fixed mold, with a large volume and a small cavity. It can only be used for a certain molding device, resulting in high production costs and difficulty in replacement. Therefore, the existing molding molds are only suitable for a single molding device, with high production costs and difficulty in engineering promotion and application. Summary of the invention

[0004] The purpose of the present invention is to provide a variable gate embedded side-drawing ultrasonic plasticizing injection mold to solve the problems of the mold being difficult to promote and apply in actual engineering, being only suitable for a single molding device, and having a high production cost.

[0005] The technical solution is as follows:

[0006] A variable gate inlaid side-drawing ultrasonic plasticizing injection mold comprises an upper mold, an upper core, a lower core and a lower mold; the upper mold consists of a plasticizing cavity, a feed hole, a mold mounting hole, a water inlet, a positioning block, a guide column mounting hole, a core mounting hole and a core ejection hole, and is inlaid on a movable mold plate by bolts; the upper core comprises a gate, a runner, a main channel, a displacement sensor mounting hole and a temperature-pressure sensor mounting hole, and is installed in the upper mold; the lower mold comprises a mold mounting hole, a core mounting hole, a core ejection hole, a device ejection hole, a guide column mounting hole and a positioning hole, and is inlaid on a fixed mold plate by bolts; the lower core comprises a cavity, a device ejection hole and a main channel, and is installed in the lower mold.

[0007] Furthermore: the upper mold and the lower mold are guided by guide columns for mold opening and mold closing, the mold closing positioning accuracy is ensured by positioning blocks and positioning holes, and the mold closing distance is controlled by displacement sensors, thereby ensuring mold closing accuracy.

[0008] Furthermore: the upper core is side-drawn onto the upper mold through the core mounting hole; the lower core is side-drawn onto the lower mold through the core mounting hole; a certain taper is provided on the core mounting hole to ensure the side-drawing accuracy between the core and the mold.

[0009] Furthermore: the upper core and the lower core form a cavity; the main channel is set with a certain taper to facilitate flow and mold filling; the gate adopts different forms such as straight gates and side gates according to the characteristics of the molding device; different upper cores and lower cores are side-drawn according to the size, shape and other characteristics of the molding device.

[0010] Furthermore: the core ejection hole is used for quickly ejecting and replacing the core; the device ejection hole is used for ejecting the molded device.

[0011] The effects achieved by the present invention are:

[0012] 1. A variable gate inlaid side-drawing ultrasonic plasticizing injection mold is composed of an upper core and a lower core side-drawing. It only needs to replace different cores according to the molding device. It is easy to disassemble and quickly replace the cavity, saving the mold system space and low production cost, thereby greatly improving the injection molding efficiency.

[0013] 2. A variable gate inlaid side-drawing ultrasonic plasticizing injection mold changes the gate form according to the characteristics of the molded device, thereby greatly improving the quality of the molded device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a variable gate inlaid side-drawing ultrasonic plasticizing injection mold;

[0015] Figure 2 It is a structural schematic diagram of the upper mold;

[0016] Figure 3 Schematic diagram of the structure of the upper core;

[0017] Figure 4 Schematic diagram of the structure of the lower mold;

[0018] Figure 5 It is a structural schematic diagram of the lower core.

[0019] In the figure: 1-plasticizing cavity, 2-feeding hole, 3-guide column, 4-upper mold, 5-mold mounting hole, 6-water inlet, 7-displacement sensor, 8-upper core, 9-lower core, 10-lower mold, 11-positioning block, 12-temperature-pressure sensor, 13-guide hole, 14-core mounting hole, 15-core ejection hole, 16-temperature-pressure sensor mounting hole, 17-gate, 18-diverter, 19-main channel, 20-displacement sensor mounting hole, 21-positioning hole, 22-device ejection hole, 23-cavity. DETAILED DESCRIPTION

[0020] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown, a variable gate inlaid side-drawing ultrasonic plasticizing injection mold described in the present invention includes an upper mold 4, an upper core 8, a lower core 9 and a lower mold 10; the upper mold 4 consists of a plasticizing cavity 1, a feed hole 2, a mold mounting hole 5, a water inlet 6, a positioning block 11, a guide column mounting hole 13, a core mounting hole 14 and a core ejection hole 15, and is embedded in the movable mold plate by bolts; the upper core 8 includes a gate 17, a branch channel 18, a main channel 19, a displacement sensor mounting hole 20 and a temperature-pressure sensor mounting hole 16, which are installed in the upper mold 4; the lower mold 10 includes a mold mounting hole 5, a core mounting hole 14, a core ejection hole 15, a device ejection hole 22, a guide column mounting hole 13 and a positioning hole 21, and is embedded in the fixed mold plate by bolts; the lower core 9 includes a cavity 23, a device ejection hole 22 and a main channel 19, and is installed in the lower mold.

[0022] More specifically: the upper mold 4 and the lower mold 10 are guided by the guide column 3 for mold opening and mold closing, the positioning block 11 and the positioning hole 21 ensure the mold closing positioning accuracy, and the displacement sensor 7 controls the mold closing distance, thereby ensuring the mold closing accuracy.

[0023] More specifically: the upper core 8 is side-drawn onto the upper mold 4 through the core mounting hole 14; the lower core 9 is side-drawn onto the lower mold 10 through the core mounting hole 14; the core mounting hole 14 is provided with a certain taper to ensure the side-drawing accuracy of the core and the mold.

[0024] More specifically: the upper core 8 and the lower core 9 form a cavity 23; the main channel 19 is set with a certain taper to facilitate the flow of plasticized polymer and mold filling; the gate 17 adopts different forms such as straight gates and side gates according to the characteristics of the molding device; according to the size, shape and other characteristics of the molding device, different upper cores 8 and lower cores 9 are side-drawn.

[0025] Furthermore: the core ejection hole 15 is used for quickly ejecting and replacing the core; the device ejection hole 22 is used for ejecting the molded device.

[0026] More specifically: according to the size, shape and other characteristics of the molded device, it is only necessary to side-draw different upper and lower cores and adopt different gate forms. It is easy to disassemble, convenient for quick replacement of the cavity, saves space in the mold system, and has low production costs, thereby greatly improving the injection molding efficiency and the quality of the molded device.

[0027] Although the embodiments disclosed in the present invention are as above, only the molded device gasket is taken as an example, but its content is only an embodiment adopted for facilitating the understanding of the technical solution of the present invention, and is not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the core technical solution disclosed in the present invention, but the scope of protection defined by the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A variable gate embedded side-drawing ultrasonic plasticizing injection mold, characterized in that: The invention comprises an upper mold (4), an upper mold core (8), a lower mold core (9) and a lower mold (10); the upper mold (4) comprises a plasticizing cavity (1), a feed hole (2), a mold mounting hole (5), a water inlet (6), a positioning block (11), a guide column mounting hole (13), a mold core mounting hole (14) and a mold core ejection hole (15), and is embedded in the movable mold plate by bolts; the upper mold core (8) comprises a gate (17), a branch channel (18), a main channel (19), a displacement sensor mounting hole (11), a guide column mounting hole (13), a mold core mounting hole (14) and a mold core ejection hole (15). The invention relates to a method for manufacturing a mold for a molded part. The mold for manufacturing the mold is characterized in that the mold for manufacturing the mold is provided with a mold for molding a mold and a temperature-pressure sensor mounting hole (20) and a temperature-pressure sensor mounting hole (16), which are installed in the upper mold (4); the lower mold (10) comprises a mold mounting hole (5), a core mounting hole (14), a core ejection hole (15), a device ejection hole (22), a guide column mounting hole (13) and a positioning hole (21), and is embedded in the fixed mold plate by bolts; the lower core (9) comprises a mold cavity (23), a device ejection hole (22) and a main flow channel (19), and is installed in the lower mold (10).

2. The variable gate embedded side-drawing ultrasonic plasticizing injection mold according to claim 1, characterized in that: The upper mold (4) and the lower mold (10) are guided by a guide column (3) for mold opening and mold closing; the mold closing positioning accuracy is ensured by a positioning block (11) and a positioning hole (21); and the mold closing distance is controlled by a displacement sensor (11), thereby ensuring the mold closing accuracy.

3. The variable gate embedded side-drawing ultrasonic plasticizing injection mold according to claim 1, characterized in that: The upper core (8) is side-drawn onto the upper mold (4) through the core mounting hole (14); the lower core (9) is side-drawn onto the lower mold (10) through the core mounting hole (14); the core mounting hole (14) is provided with a certain taper, and a side-drawing form is adopted to ensure the side-drawing accuracy of the core and the mold.

4. The variable gate embedded side-drawing ultrasonic plasticizing injection mold according to claim 1, characterized in that: The upper mold core (8) and the lower mold core (9) form a mold cavity (23); the main flow channel (19) is set with a certain taper to facilitate flow and mold filling; the gate (17) adopts different forms such as straight gates and side gates according to the characteristics of the molded device; different upper mold cores (8) and lower mold cores (9) are inlaid according to the size, shape and other characteristics of the molded device.

5. The variable gate embedded side-drawing ultrasonic plasticizing injection mold according to claim 1, characterized in that: The core ejection hole (15) is used for quickly ejecting and replacing the core; the device ejection hole (22) is used for ejecting the molded device.

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