Injection mold easy to demold

Abstract

The utility model discloses an injection mould easy to demould, which comprises a support plate and a mould body, the mould body consists of an upper mould and a lower mould, a lifting component is mounted at the inner top of the support plate, the upper mould is mounted on the lifting component, and the position of the upper mould is convenient to adjust through the lifting component. In the using process, the upper mold and the lower mold are conveniently separated through the lifting assembly, when the upper mold ascends and descends, an inflator pump in the demolding assembly can be driven to work, gas generated by the inflator pump can push an ejector rod in the lower mold to ascend, and when the ejector rod ascends, a product in the lower mold can be directly ejected out; when the ejector rod is ejected out of the lifting groove by a certain height, the flow dividing groove is exposed in the mold cavity in the lower mold, gas in the flow dividing cavity enters the flow dividing groove through the gas inlet groove, the gas in the flow dividing groove is directly blown to the position between a product and the mold, and the product demolding effect is better through gas filling.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold which is easy to demould. Background Art

[0002] At present, injection molds are tools that are used in the plastic processing industry to match plastic injection molding machines and give plastic products complete configurations and precise dimensions. The plastic is first heated and melted in the heating barrel at the bottom of the injection molding machine, and then pushed by the screw or plunger of the injection molding machine, it enters the cavity of the injection mold through the nozzle of the injection molding machine. After the plastic cools and hardens, it is demolded to obtain a molded product.

[0003] In the prior art, a quantitative injection molding mold is disclosed with the publication number "CN220031075U", which feeds materials into a feeding box through a lower hopper and a second feeding pipe, and drives an eccentric wheel to rotate a frequency-pressing interception plate through a motor, and uses the interception plate to intercept and block the pipe mouth of the second feeding pipe, thereby controlling the frequency of material falling when the second feeding pipe feeds the material, and finally feeds the material into the mold through the first feeding pipe for injection molding operation, and the blocking time when the second feeding pipe is blocked can be controlled by setting the frequency of the eccentric wheel driven by the motor to rotate, which is used to change the amount of material fed, facilitate the control of the amount of material required for injection molding, prevent uneven discharge from affecting the appearance of the injection molded parts, cause material waste, ensure the qualified rate of the injection molded parts, and solve the problem that the existing device cannot achieve quantitative discharge in the lower hopper during the injection molding process, so there will often be too much or too little material during the injection molding process. Excessive discharge will cause great waste, while too little discharge will affect the appearance of the injection molded parts, thereby increasing the defective rate of the injection molded parts.

[0004] However, the existing technology still has major deficiencies, such as:

[0005] After the injection mold is injection molded, a release agent needs to be applied inside the mold to facilitate the removal of the product from the mold. However, since the upper mold and the lower mold need to maintain high pressure during the molding process, the upper mold and the lower mold are tightly pressed against the injection molded product under high pressure. When the mold is opened, the product is not easy to fall off the mold. Although it can be removed manually, this wastes manpower and the demolding effect is low. Utility Model Content

[0006] The purpose of the utility model is to provide an injection mold that is easy to demould, so as to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An easy-to-demold injection mold comprises a support plate and a mold body, wherein the mold body consists of an upper mold and a lower mold, a lifting assembly is installed on the inner top of the support plate, the upper mold is installed on the lifting assembly, and the position of the upper mold is easily adjusted by the lifting assembly, and the lower mold is installed on the inner bottom of the support plate;

[0009] A demoulding assembly is arranged inside the inner bottom of the lower mold, and the product in the mold can be easily ejected from the mold through the demoulding assembly.

[0010] Preferably, the lifting assembly includes an electric push rod, which is installed on the inner top of the bracket plate. The output shaft of the electric push rod is installed with a lifting plate, and the upper mold is installed on the lower end surface of the lifting plate. The lifting plate is driven by the electric push rod to synchronously drive the upper mold.

[0011] Preferably, a limiting block is fixedly mounted on the side end surface of the lifting plate, and a limiting groove used in conjunction with the limiting block is formed on the side end surface of the bracket plate.

[0012] Preferably, the demoulding assembly comprises a mounting plate, an inflating cylinder is fixedly mounted on the mounting plate, a push rod is movably mounted on the inflating cylinder, one end of the push rod away from the inflating cylinder is mounted on a lifting plate, and an exhaust pipe is connected to the inflating cylinder;

[0013] A diversion cavity is arranged inside the lower mold, an exhaust groove is opened in the diversion cavity, a push rod is slidably installed inside the exhaust groove, one end of the exhaust pipe away from the inflation cylinder is connected to the diversion cavity, and a reset assembly is arranged on the push rod.

[0014] Preferably, the reset assembly comprises a lifting block, a spring is installed on the lifting block, a lifting slot for use with the lifting block is provided inside the exhaust slot, and one end of the spring away from the lifting block is installed at the inner bottom of the lifting slot.

[0015] Preferably, an air inlet groove is provided at the inner bottom of the push rod, a diversion groove is provided at the side end surface of the push rod, and the air inlet groove and the diversion groove are connected.

[0016] Preferably, the upper mold and the lower mold are in the same vertical direction.

[0017] Preferably, an injection port is provided at the inner bottom of the upper mold, and the shape of the injection port is set to be conical.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. Through the setting of the demoulding component, the upper and lower molds can be easily separated through the lifting component. When the upper mold is lifted, it will drive the inflator in the demoulding component to work. The gas generated by the inflator will push the ejector in the lower mold to rise. When the ejector rises, the product in the lower mold will be directly ejected, which effectively improves the effect of rapid demoulding of the product;

[0020] 2. Through the setting of the diverter groove, when the ejector pin is pushed out of the lifting groove to a certain height, the diverter groove will be exposed in the mold cavity of the lower mold, and the gas in the diverter cavity will enter the diverter groove through the air inlet groove. The gas in the diverter groove will be directly blown between the product and the mold, and the product demoulding effect will be better through the filling of gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 For the utility model Figure 1 ;

[0022] Figure 2 For the utility model Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the internal structure of the lower module of the utility model;

[0024] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0025] Figure 5 It is a structural schematic diagram of the push rod in the utility model.

[0026] In the figure: 1. bracket plate; 2. upper mold; 3. lower mold; 4. electric push rod; 5. lifting plate; 6. limit block; 7. limit slot; 87. mounting plate; 9. inflator; 10. exhaust pipe; 11. diverter chamber; 12. exhaust slot; 13. ejector rod; 14. lifting block; 15. spring; 16. lifting slot; 17. air inlet slot; 18. diverter slot; 19. injection port. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 , the utility model provides a technical solution:

[0029] Embodiment 1:

[0030] An easy-to-demold injection mold comprises a support plate 1 and a mold body, the mold body consists of an upper mold 2 and a lower mold 3, the upper mold 2 and the lower mold 3 are in the same vertical direction, an injection port 19 is provided at the inner bottom of the upper mold 2, and the shape of the injection port 19 is set to be conical, Fang Bo Ni discharges the slurry into the cavity of the mold, a lifting assembly is installed at the inner top of the support plate 1, the upper mold 2 is installed on the lifting assembly, and the position of the upper mold 2 is conveniently adjusted by the lifting assembly, and the lower mold 3 is installed at the inner bottom of the support plate 1;

[0031] The lifting assembly includes an electric push rod 4, which is mounted on the inner top of the bracket plate 1. The output shaft of the electric push rod 4 is equipped with a lifting plate 5. The upper mold 2 is mounted on the lower end surface of the lifting plate 5. The lifting plate 5 is driven by the electric push rod 4 to synchronously drive the upper mold 2. A limit block 6 is fixedly installed on the side end surface of the lifting plate 5. A limit groove 7 used in conjunction with the limit block 6 is provided on the side end surface of the bracket plate 1.

[0032] The lower mold 3 is provided with a demoulding assembly at the inner bottom of the lower mold 3, and the demoulding assembly is used to facilitate the product in the mold to be demolded from the mold. The demoulding assembly includes a mounting plate 87, on which an air cylinder 9 is fixedly mounted. The internal structure of the air cylinder 9 is the same as that of an existing air pump. The air pump is a technology well known to those skilled in the art and will not be described in detail here. A push rod is movably mounted on the air cylinder 9, and the end of the push rod away from the air cylinder 9 is mounted on the lifting plate 5. The air cylinder 9 is connected to an exhaust pipe 10. A diversion chamber 11 is provided inside the lower mold 3, and an exhaust groove 12 is provided in the diversion chamber 11. A push rod 13 is slidably mounted inside the exhaust groove 12. The end of the exhaust pipe 10 away from the air cylinder 9 is connected to the diversion chamber 11. A reset assembly is provided on the push rod 13, and the reset assembly includes a lifting block 14. A spring 15 is mounted on the lifting block 14. A lifting groove 16 used in conjunction with the lifting block 14 is provided inside the exhaust groove 12, and the end of the spring 15 away from the lifting block 14 is mounted on the inner bottom of the lifting groove 16.

[0033] In this embodiment, the upper and lower molds can be easily separated by a lifting assembly. When the upper mold 2 is lifted or lowered, the air cylinder 9 in the demolding assembly will be driven to work. The gas generated by the air cylinder 9 will push the ejector pin 13 in the lower mold 3 to rise. When the ejector pin 13 is lifted, the product in the lower mold 3 will be directly ejected, thereby effectively improving the effect of rapid demolding of the product.

[0034] Embodiment 2:

[0035] On the basis of the first embodiment, in order to make the demoulding effect of the flattening better, the air inlet groove 17 and the diverter groove 18 are used to achieve this effect. The inner bottom of the push rod 13 is provided with an air inlet groove 17, and the side end surface of the push rod 13 is provided with a diverter groove 18, and the air inlet groove 17 and the diverter groove 18 are connected;

[0036] In this embodiment, when the push rod 13 is pushed out of the lifting groove 16 to a certain height, the diverter groove 18 will be exposed in the mold cavity of the lower mold 3, and the gas in the diverter cavity 11 will enter the diverter groove 18 through the air inlet groove 17. The gas in the diverter groove 18 will be blown directly between the product and the mold, and the product demolding effect will be better through the filling of gas.

[0037] Working principle:

[0038] When in use, the electric push rod 4 drives the lifting plate 5 to descend. During the descent, the lifting plate 5 slides in the limiting groove 7 through the limiting block 6, so that the lifting plate 5 is more stable when descending. The descent of the lifting plate 5 will simultaneously drive the upper module to descend and fit on the lower module, and then the slurry is poured through the injection port 19;

[0039] When the lifting plate 5 is descending, the piston on the push rod will move in the inflatable cylinder 9, so that the inflatable cylinder 9 is in an inflated state. When the electric push rod 4 drives the upper module on the lifting plate 5 to rise, the push rod will drive the piston in the inflatable cylinder 9 to move. At this time, the inflatable cylinder 9 is in an exhaust state. The gas discharged from the inflatable cylinder 9 will enter the diverter chamber 11 through the exhaust pipe 10. The gas in the diverter chamber 11 will enter the lifting groove 16. The push rod 13 in the lifting groove 16 will rise by the filling of gas, and the product in the lower module will be lifted by the push rod 13.

[0040] When the ejector pin 13 pushes out a part of the volume, part of the gas in the lifting groove 16 will enter the air inlet groove 17, and the gas in the air inlet groove 17 will be discharged into the space between the product and the mold through the diversion groove 18. The filling of gas can make the product demoulding effect better.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An easy-to-demold injection mold, comprising a support plate (1) and a mold body, wherein the mold body is composed of an upper mold (2) and a lower mold (3), characterized in that: A lifting assembly is installed on the inner top of the support plate (1), the upper mold (2) is installed on the lifting assembly, and the position of the upper mold (2) is easily adjusted by the lifting assembly, and the lower mold (3) is installed on the inner bottom of the support plate (1); A demoulding assembly is provided inside the inner bottom of the lower mold (3), and the product in the mold can be easily ejected from the mold through the demoulding assembly.

2. The easy-to-release injection mold according to claim 1, characterized in that: The lifting assembly comprises an electric push rod (4), the electric push rod (4) is mounted on the inner top of the support plate (1), the output shaft of the electric push rod (4) is mounted with a lifting plate (5), the upper mold (2) is mounted on the lower end surface of the lifting plate (5), and the lifting plate (5) is driven by the electric push rod (4) to synchronously drive the upper mold (2).

3. The easy-to-release injection mold according to claim 2, characterized in that: A limiting block (6) is fixedly mounted on the side end surface of the lifting plate (5), and a limiting groove (7) for use with the limiting block (6) is provided on the side end surface of the bracket plate (1).

4. The easy-to-release injection mold according to claim 1, characterized in that: The demoulding assembly comprises a mounting plate (87), an air cylinder (9) is fixedly mounted on the mounting plate (87), a push rod is movably mounted on the air cylinder (9), an end of the push rod away from the air cylinder (9) is mounted on the lifting plate (5), and the air cylinder (9) is connected to an exhaust pipe (10); A diversion cavity (11) is arranged inside the lower mold (3), an exhaust groove (12) is provided inside the diversion cavity (11), a push rod (13) is slidably installed inside the exhaust groove (12), one end of the exhaust pipe (10) away from the inflation cylinder (9) is connected to the diversion cavity (11), and a reset assembly is arranged on the push rod (13).

5. The easy-to-release injection mold according to claim 4, characterized in that: The reset assembly comprises a lifting block (14), a spring (15) is mounted on the lifting block (14), a lifting groove (16) for use with the lifting block (14) is provided inside the exhaust groove (12), and one end of the spring (15) away from the lifting block (14) is mounted on the inner bottom of the lifting groove (16).

6. The easy-to-release injection mold according to claim 5, characterized in that: An air inlet groove (17) is provided at the inner bottom of the push rod (13), a flow diversion groove (18) is provided at the side end surface of the push rod (13), and the air inlet groove (17) and the flow diversion groove (18) are in communication.

7. The easy-to-release injection mold according to claim 1, characterized in that: The upper mold (2) and the lower mold (3) are in the same vertical direction.

8. The easy-to-release injection mold according to claim 1, characterized in that: The inner bottom of the upper mold (2) is provided with an injection port (19), and the shape of the injection port (19) is set to be conical.

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