Plastic mold convenient for air exhaust and filling

Abstract

The utility model discloses a plastic mould convenient for air exhaust and filling, which relates to the technical field of plastic moulds and comprises a lower mould, an upper mould, a worktable and a pressing device, the lower mould is mounted at the top of the worktable, the upper mould is mounted at the bottom of the pressing device, and the pressing device is mounted at the top of the worktable. An air exhaust sealing assembly is arranged on one side of the lower die, and the other side of the lower die communicates with a conveying and feeding assembly. According to the utility model, the air exhaust sealing assembly is matched with the conveying and feeding assembly to exhaust air and fill materials in the lower mold and the upper mold which are combined, so that the problems that air cannot be exhausted in time and filling of plastic raw materials is blocked due to the fact that the air exhaust sealing assembly is arranged to be matched with the conveying and feeding assembly during use of an existing plastic mold are solved; the problems that the structural strength of a product is seriously affected, ugly air grains are generated on the surface, the appearance of the product is greatly damaged, and the using effect of a plastic mold is reduced are solved, and the air exhaust filling effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic mould technical field, concretely is a plastic mould that fills conveniently to air extraction. BACKGROUND

[0002] Plastic mould is a kind of combination type mould for compression moulding, extrusion moulding, injection moulding, blow moulding and low-foam moulding, and the main structure includes a female die with variable cavity and a male die with variable core, the female die is composed of female die combination base plate, female die assembly and female die combination clamping plate, and the male die is composed of male die combination base plate, male die assembly, male die combination clamping plate, cavity truncation assembly and side truncation combination plate.

[0003] For example, a plastic part plastic mould with publication number CN221339146U, including base, fixedly arranged with fixed die frame and frame on the top of base, the frame is located on the upper side of fixed die frame, the base bottom is provided with the opening communicated with fixed die frame, the base bottom is fixedly provided with fixed frame at the position corresponding with opening, the fixed frame is fixedly provided with hydraulic cylinder one, hydraulic cylinder two can control the dynamic die plate to press down, make it coincide with fixed die frame, facilitate the plastic part fixed die, after dynamic die plate and fixed die frame coincide, moving seat is inserted into square ring groove, can seal fixed die frame and dynamic die plate, after plastic part moulding, hydraulic cylinder two controls dynamic die plate to rise, hydraulic cylinder one controls fixed die plate to move up, and the plastic part after moulding is ejected in fixed die frame in fixed die plate, facilitate demoulding, after demoulding, hydraulic cylinder one controls fixed die plate to reset, can carry out next moulding, this structure has good sealing effect, moulding speed is fast, and facilitates demoulding, simple operation, high practicality.

[0004] Based on the search of patent number, in combination with the deficiencies in prior art, it is found that

[0005] The existing plastic mould is not convenient for air extraction filling in use, which leads to that air cannot be discharged in time, causes plastic raw material filling to be blocked, which not only forms bubbles in the product, seriously affects product structure strength, but also produces unsightly air lines on the surface, greatly damages product appearance, reduces the use effect of plastic mould. UTILITY MODEL CONTENTS

[0006] To solve the problems in the background art, the utility model aims at providing a plastic mould convenient for air extraction filling, which has the advantages of air extraction filling, solves the problems that the existing plastic mould is not convenient for air extraction filling in use, which leads to that air cannot be discharged in time, causes plastic raw material filling to be blocked, which not only forms bubbles in the product, seriously affects product structure strength, but also produces unsightly air lines on the surface, greatly damages product appearance, reduces the use effect of plastic mould.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a plastic mold convenient for air exhaust filling, including lower mould, upper mould, workstation and down -the -line device, the lower mould installs at the top of workstation, the upper mould installs at the bottom of down -the -line device, down -the -line device installs at the top of workstation, one side of lower mould is equipped with air exhaust sealing assembly, another side of lower mould is connected with conveying and feeding assembly.

[0008] As the utility model is preferred, the air exhaust sealing assembly includes the communicating groove, the communicating groove is internally provided with the check valve, one end of the check valve is communicated with the vacuum pump, the bottom of the upper mould is provided with the sealing plate, the top of the lower mould is provided with the sealing groove, and the surface of the sealing plate is located in the sealing groove.

[0009] As the utility model is preferred, the conveying and feeding assembly includes the electromagnetic valve, another end of the electromagnetic valve is communicated with the barrel, the bottom of the barrel is installed at the top of the workstation, another side of the barrel is provided with the motor, the output end of the motor is provided with the screw rod, and the top of the barrel is provided with the feeding port.

[0010] As the utility model is preferred, the communicating groove is internally provided with the protection plate, one side of the protection plate close to the vacuum pump is provided with the electric push rod, one side of the inner wall of the lower mould is provided with the mounting groove, the electric push rod is installed in the mounting groove, and the mounting groove is located at the top of the communicating groove.

[0011] As the utility model is preferred, the outer side of the protection plate is provided with the sealing strip, and the other side of the protection plate is provided with the temperature insulation and corrosion resistant plate.

[0012] As the utility model is preferred, one side of the check valve away from the vacuum pump is provided with the vacuum sensor, the vacuum sensor is installed in the communicating groove, the vacuum sensor is electrically connected with the controller through the wire, the controller is electrically connected with the vacuum pump, the electromagnetic valve, the electric push rod and the motor through the wire, and the controller is installed at the top of the workstation.

[0013] As the utility model is preferred, the top of the workstation is provided with the time relay, and the time relay is electrically connected with the controller through the wire.

[0014] As the utility model is preferred, the front of the barrel is provided with the observation window, the outer side of the motor is provided with the protective heat dissipation box, and the protective heat dissipation box is installed on the barrel.

[0015] Compared with the prior art, the utility model has the beneficial effects as follows:

[0016] 1. The utility model discloses a sealing assembly is drawn out cooperation conveying feeding assembly to the lower mould and the upper mould in the combination carries out the material of air extraction filling, solved the existing plastic mould in the use of air extraction filling is not convenient, this leads to air not in time to discharge, make plastic raw material filling is blocked, not only form the bubble in the product inside, seriously influence product structure strength, also can produce the unattractive air line on the surface, greatly damaged product appearance, reduced the plastic mould use effect's problem, reached the effect of air extraction filling.

[0017] 2. The utility model discloses a sealing assembly is drawn out, effective realization mould cavity's quick air extraction and good sealing, the cooperation of intercommunication groove, check valve and vacuum pump, through starting vacuum pump, vacuum pump produces suction to check valve, check valve produces suction to mould through intercommunication groove, make lower mould and upper mould can rapidly discharge internal air after closing mould, check valve prevents air backflow, ensure the stability of air extraction effect, the sealing plate of upper mould bottom and the sealing groove of lower mould top close cooperation, greatly improved the sealing property of mould, avoid the air leakage phenomenon in the air extraction and injection molding process, guarantee the stability of forming environment, further improve the quality of product.

[0018] 3. The utility model discloses a conveying feeding assembly is set up, realized plastic raw material's high efficiency, accurate conveying, electromagnetic valve control raw material's conveying start -stop, can start in use, make motor output end drive screw rotation, push raw material in the material cylinder to mould cavity through the rotation of screw, this feeding mode can accurate control feeding amount and feeding speed according to production demand, guarantee plastic raw material even, fast filling mould, improved production efficiency, also help to reduce the product defect caused by uneven feeding. ACCURACY

[0019] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is the three -dimensional split structure schematic diagram of the utility model;

[0021] Figure 3 It is the three -dimensional structure schematic diagram of the utility model; Figure 2 It is the three -dimensional structure schematic diagram of the utility model;

[0022] In the drawing: 1, lower mould;2, upper mould;3, workbench;4, lower pressure device;5, sealing assembly is drawn out;51, intercommunication groove;52, check valve;53, vacuum pump;54, sealing plate;55, sealing groove;6, conveying feeding assembly;61, electromagnetic valve;62, material cylinder;63, motor;64, screw;65, feed inlet;7, protection board;8, electric push rod;9, installation groove;10, sealing strip;11, temperature insulation anticorrosive plate;12, vacuum sensor;13, controller;14, time relay;15, observation window;16, protection heat sink. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 3 As shown, the present invention provides a plastic mold for convenient vacuum filling, including a lower mold 1, an upper mold 2, a worktable 3 and a pressing device 4. The lower mold 1 is installed on the top of the worktable 3, the upper mold 2 is installed on the bottom of the pressing device 4, the pressing device 4 is installed on the top of the worktable 3, a vacuum sealing assembly 5 is provided on one side of the lower mold 1, and a conveying and feeding assembly 6 is connected to the other side of the lower mold 1.

[0025] refer to Figure 3 The vacuum sealing assembly 5 includes a connecting groove 51, a one-way valve 52 is installed inside the connecting groove 51, one end of the one-way valve 52 is connected to a vacuum pump 53, a sealing plate 54 is installed at the bottom of the upper mold 2, and a sealing groove 55 is opened at the top of the lower mold 1, with the surface of the sealing plate 54 located inside the sealing groove 55.

[0026] As a technical optimization of this utility model, by setting the air extraction and sealing component 5, the rapid air extraction and good sealing of the mold cavity are effectively achieved. The cooperation of the connecting groove 51, the one-way valve 52 and the vacuum pump 53, by starting the vacuum pump 53, the vacuum pump 53 generates suction force on the one-way valve 52, and the one-way valve 52 generates suction force on the mold through the connecting groove 51, so that the mold can quickly expel the internal air after the mold is closed. The one-way valve 52 prevents air backflow and ensures the stability of the air extraction effect. The sealing plate 54 at the bottom of the upper mold 2 and the sealing groove 55 at the top of the lower mold 1 are tightly fitted, which greatly improves the sealing performance of the mold, avoids air leakage during air extraction and injection, ensures the stability of the molding environment, and thus improves the quality of the product.

[0027] refer to Figure 2 The conveying and feeding assembly 6 includes a solenoid valve 61, the other end of which is connected to a material cylinder 62. The bottom of the material cylinder 62 is installed on the top of the workbench 3. A motor 63 is installed on the other side of the material cylinder 62. A screw 64 is installed at the output end of the motor 63. A feed inlet 65 is installed at the top of the material cylinder 62.

[0028] As a technical optimization scheme of the utility model, through setting up conveying and feeding assembly 6, realize the efficient, accurate conveying of plastic raw materials, electromagnetic valve 61 controls the conveying start and stop of raw materials, can be started in use, make motor 63 output end drive screw rod 64 rotation, push the raw materials in material cylinder 62 to mold cavity through the rotation of screw rod 64, this feeding mode can accurately control the feeding amount and feeding speed according to production demand, ensure that plastic raw materials are uniformly and quickly filled in mold, improve production efficiency, also help to reduce product defects caused by uneven feeding.

[0029] Reference Figure 3 The inside of the communication groove 51 is provided with a protective plate 7, the side close to the vacuum pump 53 of the protective plate 7 is provided with an electric push rod 8, the inside of the installation groove 9 is provided with the electric push rod 8, and the installation groove 9 is located at the top of the communication groove 51.

[0030] As a technical optimization scheme of the utility model, through setting up protective plate 7, electric push rod 8 and installation groove 9, the safety and stability of the air extraction system are enhanced, the electric push rod 8 can drive the protective plate 7 to move in the communication groove 51, after air extraction is completed, the protective plate 7 can block the plastic raw materials from entering the communication groove 51, avoid the raw materials from blocking the air extraction channel, protect the normal operation of the air extraction system, the installation groove 9 provides a stable installation position for the electric push rod 8, ensures that the movement of the protective plate 7 is accurate and reliable, prolongs the service life of the mold.

[0031] Reference Figure 3 The outside of the protective plate 7 is provided with a sealing strip 10, and the other side of the protective plate 7 is provided with a temperature insulation and corrosion resistant plate 11.

[0032] As a technical optimization scheme of the utility model, through setting up sealing strip 10 and temperature insulation and corrosion resistant plate 11, the sealing strip 10 is installed on the outside of the protective plate 7, the sealing property between the protective plate 7 and the communication groove 51 is enhanced, air leakage and raw material leakage are prevented, the temperature insulation and corrosion resistant plate 11 can effectively isolate the heat of the plastic raw materials, prevent the heat from damaging the components of the air extraction system, also can resist the corrosive substances possibly contained in the plastic raw materials, protect the components of the air extraction system, prolong the service life.

[0033] Reference Figure 2 The side, away from the vacuum pump 53, of the one-way valve 52 is provided with a vacuum sensor 12, the vacuum sensor 12 is installed in the inside of the communication groove 51, the vacuum sensor 12 is electrically connected with a controller 13 through wires, the controller 13 is electrically connected with the vacuum pump 53, the electromagnetic valve 61, the electric push rod 8 and the motor 63 through wires, and the controller 13 is installed on the top of the workbench 3.

[0034] As a technical optimization scheme of the utility model, through setting vacuum sensor 12 and controller 13, realized the intelligent control of the air extraction and injection molding process, vacuum sensor 12 real -time monitoring the vacuum degree in the mould, and data transmission is given to controller 13, and controller 13 is automatically controlled according to the preset vacuum degree value, the working state of vacuum pump 53, electromagnetic valve 61, electric push rod 8 and motor 63, when the vacuum degree reaches the set value, controller 13 controls electromagnetic valve 61 to open, and when the feeding is completed, the electric push rod 8 is controlled to move, and the protective plate 7 is closed, the whole process is high in automation degree, improves production efficiency and the stability of product quality.

[0035] Reference Figure 2 The top of the workbench 3 is provided with a time relay 14, which is electrically connected with the controller 13 through wires.

[0036] As a technical optimization scheme of the utility model, through setting time relay 14, further optimize the control of production process, time relay 14 cooperates with controller 13, can accurately control the time of each action, can set the air extraction time, feeding time and the delay time of protective plate 7 action, etc., make the whole production process more standardized and standardized, help to improve production efficiency, reduce the influence of human factors on product quality.

[0037] Reference Figure 2 Figure 2 The front of the barrel 62 is provided with an observation window 15, and the outer side of the motor 63 is provided with a protective heat sink 16, which is installed on the barrel 62.

[0038] As a technical optimization scheme of the utility model, through setting observation window 15 and protective heat sink 16, improve the convenience of mould use and the safety of equipment, observation window 15 is convenient for operator to observe the raw material reserve in barrel 62 at any time, and the raw material is supplemented in time, avoid production interruption due to lack of material, protective heat sink 16 is installed on the outer side of motor 63, can effectively dissipate heat, protect motor 63 from damage due to overheating during long time operation, also can play a protective role, prevent operator from accidental contact with motor 63 and cause injury, ensure the stable operation of equipment and the safety of operator.

[0039] The working principle and use process of the utility model: when using the plastic mould of the utility model, first, pour the plastic raw material into the barrel 62 from the feeding port 65, then start the lower pressing device 4, push the upper die 2 to move downward, until the sealing plate 54 at the bottom of the upper die 2 is completely embedded in the sealing groove 55 at the top of the lower die 1, complete the die closing action.

[0040] After the mold is closed, the sealing strip 10 outside the protective plate 7 enhances the sealing between the communication groove 51, preventing air leakage and raw material leakage. The controller 13 starts the electric push rod 8 to drive the protective plate 7 to move out of the communication groove 51, so that the one-way valve 52 communicates with the lower mold 1 and the upper mold 2 of the closed mold. The heat insulation and corrosion prevention plate 11 on the other side effectively isolates the heat of the plastic raw material and resists the corrosive substances that may be contained therein, protecting the one-way valve 52 and the vacuum pump 53 and prolonging their service life. The controller 13 starts the vacuum pump 53 to open, and the one-way valve 52 and the communication groove 51 are used to pump the mold cavity of the lower mold 1 and the upper mold 2 after the mold is closed. The presence of the one-way valve 52 allows air to flow only from the mold cavity to the vacuum pump 53, effectively preventing air backflow after pumping is complete, ensuring a stable vacuum environment in the mold. In this process, the vacuum sensor 12 monitors the vacuum degree in the mold in real time and transmits the data to the controller 13. When the vacuum degree reaches the preset value, the controller 13 sends a command to stop the vacuum pump 53 and close the start, and the electric push rod 8 drives the protective plate 7 to reset to the inside of the communication groove 51. On the other hand, the electromagnetic valve 61 is opened.

[0041] After the electromagnetic valve 61 is opened, the motor 63 is started, and the screw rod 64 at the output end starts to rotate. The rotation of the screw rod 64 pushes the plastic raw material in the barrel 62, allowing it to be injected into the mold cavity through the delivery pipeline. Since the mold is in a vacuum state, the plastic raw material can more smoothly and uniformly fill the corners of the cavity, reducing problems such as insufficient filling and air bubbles caused by air resistance, greatly improving product quality, achieving the effect of pumping and filling, and enhancing the use effect of the plastic mold.

[0042] After the product is formed, the lower pressing device 4 drives the upper mold 2 to rise, completing the mold opening action and removing the formed product. At the same time, the observation window 15 allows the operator to check the remaining amount of raw material in the barrel 62 at any time, so that the raw material can be replenished in time. The protective heat sink 16 continuously cools the motor 63 and prevents accidental contact with the motor 63, ensuring stable operation of the equipment and safety of personnel. During the entire production process, the time relay 14 and the controller 13 work together to accurately control the time of each action, ensuring standardized production processes, improving production efficiency, and reducing the impact of human factors on product quality.

[0043] In summary: The plastic mold with convenient pumping and filling is provided with a pumping and sealing assembly 5 to cooperate with the delivery and feeding assembly 6 to pump and fill the material in the combined lower mold 1 and upper mold 2, solving the problem that the existing plastic mold is not convenient to pump and fill during use, which causes air to be unable to be discharged in time, resulting in blocked plastic raw material filling. This not only forms bubbles inside the product, seriously affecting the product structure strength, but also produces unsightly air lines on the surface, greatly damaging the product appearance and reducing the use effect of the plastic mold.

[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic mold for easy air injection filling, comprising a lower mold (1), an upper mold (2), a worktable (3) and a pressing device (4), characterized in that: The lower mold (1) is installed on the top of the workbench (3), the upper mold (2) is installed on the bottom of the pressing device (4), the pressing device (4) is installed on the top of the workbench (3), one side of the lower mold (1) is provided with an air extraction sealing assembly (5), and the other side of the lower mold (1) is communicated with a conveying and feeding assembly (6).

2. A plastic mold for easy air-charge filling according to claim 1, characterized in that: The air extraction sealing assembly (5) comprises a communication groove (51), a one-way valve (52) is installed in the communication groove (51), one end of the one-way valve (52) is communicated with a vacuum pump (53), a sealing plate (54) is installed on the bottom of the upper mold (2), and the top of the lower mold (1) is provided with a sealing groove (55); and the surface of the sealing plate (54) is located in the sealing groove (55).

3. A conveniently air-purge filled plastic mold according to claim 2, wherein: The conveying and feeding assembly (6) comprises a solenoid valve (61), the other end of the solenoid valve (61) is communicated with a barrel (62), the bottom of the barrel (62) is installed on the top of the workbench (3), the other side of the barrel (62) is installed with a motor (63), the output end of the motor (63) is installed with a screw rod (64), and the top of the barrel (62) is installed with a feeding port (65).

4. A plastic mold for easy air-bleed filling according to claim 2, wherein: The inside of the communication groove (51) is provided with a protection plate (7), one side of the protection plate (7) close to the vacuum pump (53) is installed with an electric push rod (8), one side of the inner wall of the lower mold (1) is provided with a mounting groove (9), the electric push rod (8) is installed in the mounting groove (9), and the mounting groove (9) is located on the top of the communication groove (51).

5. A conveniently air-vented plastic mold according to claim 4, wherein: The outer side of the protection plate (7) is installed with a sealing strip (10), and the other side of the protection plate (7) is installed with a temperature insulation and corrosion resistant plate (11).

6. A plastic mold for easy air-bleed filling according to claim 3, wherein: The side, away from the vacuum pump (53), of the one-way valve (52) is provided with a vacuum sensor (12), and the vacuum sensor (12) is installed in the communication groove (51); the vacuum sensor (12) is electrically connected with a controller (13) through wires, the controller (13) is electrically connected with the vacuum pump (53), the solenoid valve (61), the electric push rod (8) and the motor (63) through wires, and the controller (13) is installed on the top of the workbench (3).

7. A conveniently air-purge filled plastic mold according to claim 1, wherein: A time relay (14) is installed on the top of the workbench (3), and the time relay (14) is electrically connected with the controller (13) through wires.

8. A plastic mold for easy air-charge filling according to claim 3, wherein: The front of the barrel (62) is installed with an observation window (15), the outer side of the motor (63) is installed with a protective heat dissipation box (16), and the protective heat dissipation box (16) is installed on the barrel (62).

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