A gas-assisted demolding injection mold

Abstract

The utility model discloses an injection mold of pneumatic demoulding relates to plastic bucket processing technical field, including fixed base and membrane -stripping subassembly, fixed base inside rear end is equipped with hydraulic push rod, and the lower mould is provided with the hydraulic push rod top, the membrane -stripping subassembly sets up in fixed base surface, and the membrane -stripping subassembly includes PLC controller, sealing groove, support frame, nitrogen storage tank, nitrogen booster pump, delivery pipe, fixed electromagnetic valve, communication pipe, gas outlet spray head, spacing movable passageway, ejector rod, exhaust electromagnetic valve, exhaust passageway, micro filter core and sealing connector, the PLC controller sets up in fixed base front surface right side upper end, and the fixed base upper surface is provided with sealing groove. The injection mold of pneumatic demoulding, through the membrane -stripping subassembly makes the device adopt to start demoulding mechanism, can realize the quick demoulding of material, through the hydraulic push rod, the lower mould, the spacing vertical rod, the positioning hole, the positioning pin and the spacing frame make the device can realize the stable accurate mould of upper and lower mould.

Description

Technical Field

[0001] This utility model relates to the field of plastic bucket processing technology, specifically to a pneumatically demolded injection mold. Background Technology

[0002] Injection molds for plastic bucket manufacturing are specialized molding tools used to produce plastic buckets. They inject molten plastic into the mold cavity under high pressure, which then cools to form a bucket-shaped product. Their core structure includes a deep cavity core, reinforcing ribs, and a rapid demolding system, making them suitable for mass production in fields such as chemical and food packaging. However, current injection molds still have the following shortcomings:

[0003] For example, patent document CN221793637U discloses an injection mold for processing plastic buckets. This injection mold for processing plastic buckets uses a motor to drive a fan blade to rotate, and then the motor drives air to dissipate heat from the heat sink fins, thereby effectively facilitating rapid heat dissipation of water inside the S-bend. However, it does not have an auxiliary demolding mechanism, so it cannot achieve rapid demolding of the molded plastic bucket. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatically demolded injection mold to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pneumatically demolded injection mold, comprising a fixed base and a demolding assembly. A hydraulic push rod is installed at the rear end of the fixed base, and a lower mold is provided at the top of the hydraulic push rod. The demolding assembly is disposed on the surface of the fixed base and includes a PLC controller, a sealing groove, a support frame, a nitrogen storage tank, a nitrogen booster pump, a delivery pipe, a fixed solenoid valve, a connecting pipe, an exhaust nozzle, a limit movable channel, an ejector rod, an exhaust solenoid valve, an exhaust channel, a micro filter element, and a sealing connector. The PLC controller is disposed on the upper right side of the front surface of the fixed base, and a sealing groove is provided on the upper surface of the fixed base. A support frame is installed on the upper rear side of the right surface of the fixed base.

[0006] Furthermore, a nitrogen storage tank is provided on the upper surface of the support frame, and a nitrogen booster pump is provided on the upper side of the nitrogen storage tank. A delivery pipe is connected to the left front end of the nitrogen booster pump.

[0007] Furthermore, a fixed solenoid valve is provided at the left end of the delivery pipe, and a connecting pipe is connected to the left side of the fixed solenoid valve. The left end of the connecting pipe passes through the lower side of the sealing groove and extends into the interior of the sealing groove, and an air outlet nozzle is installed at the left end of the connecting pipe.

[0008] Furthermore, a limiting movable channel is provided inside the lower mold, and an ejector rod is slidably connected inside the limiting movable channel. An exhaust solenoid valve is provided at the lower left end of the limiting movable channel.

[0009] Furthermore, an exhaust channel is provided at the left end of the lower mold, and the right end of the exhaust channel is connected to the left side of the exhaust solenoid valve. A micro filter element is provided at the left end of the exhaust channel, and a sealing connector is provided at the bottom of the lower mold.

[0010] Furthermore, limit rods are installed on both sides of the upper surface of the fixed base, and an upper mold is installed on the top of the limit rods.

[0011] Furthermore, the upper surface of the upper mold is provided with an injection port, and the lower surface of the upper mold is provided with a positioning hole.

[0012] Furthermore, the upper surface of the lower mold is provided with a positioning pin, and the lower end of the outer surface of the lower mold is provided with a limit frame, the surface of the limit frame being slidably connected to the surface of the limit rod.

[0013] This utility model provides a pneumatically demolded injection mold, which has the following beneficial effects:

[0014] 1. This utility model incorporates a demolding assembly, which includes a PLC controller, a sealing groove, a support frame, a nitrogen storage tank, a nitrogen booster pump, a delivery pipe, a fixed solenoid valve, a connecting pipe, an exhaust nozzle, a limiting movable channel, an ejector rod, an exhaust solenoid valve, an exhaust channel, a micro filter element, and a sealing connector. In use, after molding, the hydraulic push rod is activated, causing the lower mold to move downwards and reset, sealing the outer surface of the sealing connector with the inner side of the sealing groove. The PLC controller controls the fixed solenoid valve to open, allowing nitrogen from the nitrogen storage tank to pass through the nitrogen booster pump and enter the connecting pipe via the delivery pipe. The nitrogen is then sprayed through the exhaust nozzle into the limiting movable channel, lifting the ejector rod upwards and quickly demolding the plastic bucket. After demolding, the PLC controller controls the exhaust solenoid valve to open, allowing gas in the limiting movable channel to be discharged through the exhaust channel, facilitating the reset of the ejector rod. The micro filter element provides dust protection. This device, employing a demolding mechanism, enables rapid demolding of materials.

[0015] 2. This utility model, through the configuration of a hydraulic push rod, a lower mold, a limiting upright, a positioning hole, a positioning pin, and a limiting frame, allows for the following operation: activating the hydraulic push rod causes the lower mold to move upwards. The lower mold then moves the limiting frame upwards along the surface of the limiting upright. The sliding connection between the limiting frame and the surface of the limiting upright limits the lifting and lowering of the lower mold. The sliding connection between the positioning pin and the positioning hole ensures more precise positioning of the lower and upper molds, enabling the device to achieve stable and precise mold closing of the upper and lower molds. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an injection mold for pneumatic demolding according to the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the lower mold of an injection mold for pneumatic demolding according to the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of a demolding component for a pneumatically demolded injection mold according to the present invention.

[0019] Figure 4 This is a three-dimensional cross-sectional view of the lower mold of an injection mold for pneumatic demolding according to the present invention.

[0020] Figure 5 This is a three-dimensional cross-sectional view of the upper mold of an injection mold for pneumatic demolding according to the present invention.

[0021] In the diagram: 1. Fixed base; 2. Hydraulic push rod; 3. Lower mold; 4. Demolding assembly; 401. PLC controller; 402. Sealing groove; 403. Support frame; 404. Nitrogen storage tank; 405. Nitrogen booster pump; 406. Delivery pipe; 407. Fixed solenoid valve; 408. Connecting pipe; 409. Air outlet nozzle; 410. Limiting movement channel; 411. Ejector rod; 412. Exhaust solenoid valve; 413. Exhaust channel; 414. Miniature filter element; 415. Sealing connector; 5. Limiting upright; 6. Upper mold; 7. Injection port; 8. Positioning hole; 9. Positioning pin; 10. Limiting frame. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figures 1 to 5As shown, a pneumatically demolded injection mold includes a fixed base 1 and a demolding assembly 4. A hydraulic push rod 2 is installed at the rear end of the fixed base 1, and a lower mold 3 is provided on the top of the hydraulic push rod 2. The demolding assembly 4 is disposed on the surface of the fixed base 1 and includes a PLC controller 401, a sealing groove 402, a support frame 403, a nitrogen storage tank 404, a nitrogen booster pump 405, a delivery pipe 406, a fixed solenoid valve 407, a connecting pipe 408, an exhaust nozzle 409, a limiting movement channel 410, an ejector rod 411, an exhaust solenoid valve 412, an exhaust channel 413, a micro filter element 414, and a sealing connector 415. The PLC controller 401 is located on the upper right side of the front surface of the fixed base 1, and a sealing groove 402 is provided on the upper surface of the fixed base 1. A support frame 403 is installed on the upper rear side of the right surface of the fixed base 1, and a nitrogen storage tank 404 is provided on the upper surface of the support frame 403. A nitrogen booster pump 405 is installed on the upper side of the nitrogen storage tank 404. A delivery pipe 406 is connected to the front left side of the nitrogen booster pump 405. A fixed solenoid valve 407 is installed at the left end of the delivery pipe 406. A connecting pipe 408 is connected to the left side of the fixed solenoid valve 407. The left end of the connecting pipe 408 passes through the lower side of the sealing groove 402 and extends into the interior of the sealing groove 402. An exhaust nozzle 409 is installed at the left end of the connecting pipe 408. A limit movement channel 410 is opened inside the lower mold 3. An ejector rod 411 is slidably connected inside the limit movement channel 410. An exhaust solenoid valve 412 is installed at the lower left end of the limit movement channel 410. An exhaust channel 413 is opened at the left end of the lower mold 3. The right end of the exhaust channel 413 is connected to the left side of the exhaust solenoid valve 412. A micro filter element 414 is installed at the left end of the exhaust channel 413. A sealing connector 415 is installed at the bottom of the lower mold 3.

[0024] The specific operation is as follows: During use, after molding, start the hydraulic push rod 2, which drives the lower mold 3 to move downward and reset, so that the outer surface of the sealing connector 415 is sealed and connected to the inner side of the sealing groove 402. The fixed solenoid valve 407 is opened by the PLC controller 401, so that the nitrogen in the nitrogen storage tank 404 passes through the nitrogen booster pump 405 and enters the connecting pipe 408 through the delivery pipe 406. It is then sprayed out through the air nozzle 409 into the limiting movable channel 410, which pushes the ejector rod 411 upward, so that the plastic bucket can be demolded quickly. After demolding, the exhaust solenoid valve 412 is opened by the PLC controller 401, so that the gas in the limiting movable channel 410 is discharged through the exhaust channel 413, which facilitates the reset of the ejector rod 411. The micro filter element 414 can play a dust prevention role.

[0025] Please refer to Figure 2 , Figure 4 and Figure 5The upper surface of the fixed base 1 is equipped with limit rods 5 on both sides, and the upper mold 6 is installed on the top of the limit rods 5. The upper surface of the upper mold 6 is provided with an injection port 7, and the lower surface of the upper mold 6 is provided with a positioning hole 8. The upper surface of the lower mold 3 is provided with a positioning pin 9, and the lower end of the outer surface of the lower mold 3 is provided with a limit frame 10. The surface of the limit frame 10 is slidably connected to the surface of the limit rods 5.

[0026] The specific operation is as follows: When in use, start the hydraulic push rod 2, so that the hydraulic push rod 2 drives the lower mold 3 to move upward. The lower mold 3 drives the limit frame 10 to move upward along the surface of the limit rod 5. Through the sliding connection between the limit frame 10 and the surface of the limit rod 5, the lifting and lowering of the lower mold 3 is limited. Through the sliding connection between the positioning pin 9 and the positioning hole 8, the positioning of the lower mold 3 and the upper mold 6 is more accurate.

[0027] In summary, as Figures 1 to 5 As shown, in use, the pneumatically ejected injection mold works as follows: First, the hydraulic push rod 2 is activated, causing it to move the lower mold 3 upward. The lower mold 3 then moves the limiting frame 10 upward along the surface of the limiting rod 5. The sliding connection between the limiting frame 10 and the surface of the limiting rod 5 limits the lifting and lowering of the lower mold 3. The sliding connection between the positioning pin 9 and the positioning hole 8 ensures more precise positioning of the lower mold 3 and the upper mold 6. After injection molding, the hydraulic push rod 2 is activated again, causing it to move the lower mold 3 downward to reset, so that the outer surface of the sealing connector 415 is aligned with the inner surface of the sealing groove 402. The side-sealed connection is controlled by the PLC controller 401 to open the fixed solenoid valve 407, allowing nitrogen in the nitrogen storage tank 404 to pass through the nitrogen booster pump 405 and enter the connecting pipe 408 through the delivery pipe 406. The nitrogen is then sprayed out through the exhaust nozzle 409 into the limiting movable channel 410, which pushes the ejector rod 411 upward, allowing the plastic bucket to be demolded quickly. After demolding, the PLC controller 401 controls the exhaust solenoid valve 412 to open, allowing the gas in the limiting movable channel 410 to be discharged through the exhaust channel 413, facilitating the reset of the ejector rod 411. The micro filter element 414 can play a dustproof role.

[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A pneumatically demolded injection mold, comprising a fixed base (1) and a demolding assembly (4), characterized in that: The fixed base (1) is equipped with a hydraulic push rod (2) at its rear end, and a lower mold (3) is provided on the top of the hydraulic push rod (2). The demolding assembly (4) is provided on the surface of the fixed base (1), and the demolding assembly (4) includes a PLC controller (401), a sealing groove (402), a support frame (403), a nitrogen storage tank (404), a nitrogen booster pump (405), a delivery pipe (406), a fixed solenoid valve (407), a connecting pipe (408), an exhaust nozzle (409), a limit movement channel (410), an ejector rod (411), an exhaust solenoid valve (412), an exhaust channel (413), a micro filter element (414), and a sealing connector (415). The PLC controller (401) is located on the upper right side of the front surface of the fixed base (1), and a sealing groove (402) is provided on the upper surface of the fixed base (1). A support frame (403) is installed on the upper rear side of the right surface of the fixed base (1).

2. The injection mold for pneumatic demolding according to claim 1, characterized in that, A nitrogen storage tank (404) is provided on the upper surface of the support frame (403), and a nitrogen booster pump (405) is provided on the upper side of the nitrogen storage tank (404). A delivery pipe (406) is connected to the left front end of the nitrogen booster pump (405).

3. The injection mold for pneumatic demolding according to claim 1, characterized in that, A fixed solenoid valve (407) is provided at the left end of the delivery pipe (406), and a connecting pipe (408) is connected to the left side of the fixed solenoid valve (407). The left end of the connecting pipe (408) passes through the lower side of the sealing groove (402) and extends into the interior of the sealing groove (402). An air outlet nozzle (409) is installed at the left end of the connecting pipe (408).

4. The injection mold for pneumatic demolding according to claim 1, characterized in that, The lower mold (3) has a limit channel (410) inside, and an ejector rod (411) is slidably connected inside the limit channel (410). An exhaust solenoid valve (412) is provided at the lower left side of the limit channel (410).

5. The injection mold for pneumatic demolding according to claim 1, characterized in that, The lower mold (3) has an exhaust channel (413) at the left end, and the right end of the exhaust channel (413) is connected to the left side of the exhaust solenoid valve (412). A micro filter element (414) is provided at the left end of the exhaust channel (413), and a sealing connector (415) is provided at the bottom of the lower mold (3).

6. The injection mold for pneumatic demolding according to claim 1, characterized in that, The fixed base (1) has limit rods (5) installed on both sides of its upper surface, and the limit rods (5) have an upper mold (6) installed on their top.

7. The injection mold for pneumatic demolding according to claim 6, characterized in that, The upper mold (6) has an injection port (7) on its upper surface and a positioning hole (8) on its lower surface.

8. The injection mold for pneumatic demolding according to claim 1, characterized in that, The lower mold (3) is provided with a positioning pin (9) on its upper surface, and a limit frame (10) is provided at the lower end of the outer surface of the lower mold (3). The surface of the limit frame (10) is slidably connected to the surface of the limit rod (5).

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