Injection mold capable of conveniently and flexibly swinging silica gel finished product for demolding after mold opening

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold capable of conveniently and flexibly swinging a silica gel finished product for demolding after mold opening, which comprises an upper mold main body and a lower mold main body which are matched with each other, and the upper mold main body is provided with an upper mold core and a gel feeding system communicated with the upper mold core. The lower die main body is provided with a lower die core and a die core suspended in the lower die core, after the upper die main body and the lower die main body are closed, a spherical cavity is formed among the upper die core, the lower die core and the die core, the lower die main body is further provided with an ejection mechanism and a hinge rod butted with the ejection mechanism, and the lower end of the die core is provided with a connecting rod butted with the hinge rod. The connecting rod is in hinged fit with the hinged rod, and the ejection mechanism is used for ejecting the hinged rod out of the lower mold core after mold opening, so that the connecting rod can swing on the hinged rod; an operator can directly take out the silica gel molded product in the mold after opening the mold, and does not need to take out the silica gel molded product after the mold core is communicated and taken out to the outside.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field especially is related to an injection mold which can facilitate flexible swing of silica gel finished product after mold opening to carry out demolding. BACKGROUND

[0002] As the mainstream way of producing silica gel products, injection mold forming process provides an effective way for realizing large-scale and efficient production. Traditionally, the demolding operation of the inner hollow spherical silica gel product adopts a relatively simple and direct method. After mold opening, the staff directly takes out the molded product with the internal mold core, and then tries to separate the mold core from the silica gel product by means of air blowing, and finally pulls the product off the mold core.

[0003] However, this traditional demolding method has exposed many difficult-to-ignore drawbacks in long-term practice. On the one hand, in the process of taking out the mold core, due to the lack of precise and gentle separation mechanism, the mold core is easily subjected to collision and scratching. The mold core is mostly a precisely manufactured component, and even a slight damage on the surface will seriously affect the quality of the subsequent injection molded product. For example, slight scratches may cause the appearance of line defects on the inner wall of the silica gel product, damaging the flatness of the product appearance; more seriously, the damaged part may change the flow state of the silica gel in the mold cavity, causing uneven thickness of the product, greatly weakening the mechanical properties and sealing effect of the product. Frequent collisions also accelerate the wear of the mold core, greatly shortening its service life, and the enterprise has to frequently purchase new mold cores, significantly increasing the production cost.

[0004] On the other hand, temperature factors also disturb the traditional process. When the mold core is taken out together with the product, the heat is quickly lost in the process of air blowing operation and exposure to the workshop environment, and the temperature drops significantly. The temperature of the mold core has strict requirements for silica gel injection molding, and appropriate temperature can ensure the smooth flow and filling of silica gel material in the mold cavity, thereby obtaining high-quality products. The mold core in low-temperature state will cause the viscosity of silica gel material to rise rapidly, and the flowability will be hindered, which cannot be evenly distributed, and the finally formed product is prone to defects such as material shortage and bubbles. Therefore, after each demolding, in order to ensure the normal development of the next injection molding process, the mold core has to be heated to the appropriate temperature again, which not only slows down the overall production rhythm and reduces the production efficiency, but also increases the energy consumption cost, which is contrary to the current trend of energy saving and emission reduction and efficient production in the manufacturing industry.

[0005] In view of these problems existing in the traditional demolding method, an innovative injection mold forming silica gel product technology scheme is urgently needed, which can realize the non-destructive separation of the mold core and the product, and maintain the stability of the mold core temperature, thereby improving the product quality and production efficiency. INVENTION CONTENTS

[0006] The utility model discloses overcome the above situation's shortage, aim at providing a kind of technical scheme capable of solving the above problem.

[0007] A injection mold that can be conveniently and flexibly swung to demold silica gel finished product after mold opening, comprising mutually matched upper die body and lower die body, the upper die body is provided with upper die kernel and the glue system that is communicated at upper die kernel, the lower die body is provided with lower die kernel and the mold core that is suspended in lower die kernel, after the upper die body and the lower die body are closed, the spherical cavity is formed between upper die kernel, lower die kernel and mold core, the lower die body is also provided with ejection mechanism and the articulated rod that is butt joint to ejection mechanism, the lower end of mold core is provided with the connecting rod that is butt joint to articulated rod, articulated cooperation between connecting rod and articulated rod, after mold opening, ejection mechanism is used to eject articulated rod on lower die kernel, so that connecting rod can swing on articulated rod.

[0008] Preferably, the lower end of the connecting rod is shaped with an insertion block, the upper end of the articulated rod is shaped with shaft connecting portions abutting against both sides of the insertion block, a rotating shaft is transversely provided between the insertion block and the shaft connecting portions, so that the insertion block can rotate along the rotating shaft on the two shaft connecting portions.

[0009] Preferably, one side of the insertion block is a circular arc surface, and the other side of the insertion block is a flat surface, so that the connecting rod can be flipped on the articulated rod along the side of the circular arc surface, and the connecting rod can be vertically erected by abutting against the upper end of the articulated rod through the flat surface.

[0010] Preferably, the articulated rod is further provided with an elastic convex element protruding from the upper end thereof, and the lower end of the connecting rod is provided with a concave groove butt-jointed to the elastic convex element, so that the connecting rod and the articulated rod are positioned by clamping through the elastic convex element and the concave groove.

[0011] Preferably, the ejection mechanism is provided with a power ejection rod that can be powered to lift, the power ejection rod is shaped with an insertion column, the lower end of the articulated rod is provided with a insertion hole matched with the insertion column, the articulated rod and the power ejection rod are inserted and matched through the insertion column and the insertion hole, and a fixing pin is transversely inserted into the insertion hole and the insertion column at the lower end of the articulated rod, and the fixing pin is restricted in the lower die body.

[0012] Preferably, the upper die kernel and the lower die kernel are both provided with hemispherical grooves for forming the spherical cavity, and the hemispherical grooves are arrayed with inner recesses for forming the spherical body with a plurality of sharp conical structures uniformly distributed on the surface.

[0013] Preferably, the upper die kernel and the lower die kernel are both provided with four hemispherical grooves uniformly distributed, and the mold core and the articulated rod are both correspondingly provided with four, and the ejection mechanism is used to simultaneously drive the four articulated rods to lift and move.

[0014] Preferably, the lower die kernel is shaped with a blow connection boss at the bottom corresponding to the hemispherical groove, and the connecting rod and the articulated rod are inserted into the blow connection boss.

[0015] Preferably, a sealing ring is arranged on the abutting edge between the hemispherical grooves of the upper and lower die cores.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] By setting the hinged rod between the position where the ejection mechanism is connected with the mold core, the hinged rod is hinged with the connecting rod extending on the mold core, so that after the mold is opened, the ejection mechanism ejects the entire spherical silica gel molded product, and because of the hinged cooperation of the hinged rod and the connecting rod, the mold core can be swung along the hinged rod in the opened mold to expose the lower end of the silica gel molded product at the position of the connecting rod, so that air blowing along the position is facilitated to achieve the separation of the mold core and the silica gel molded product, and finally the silica gel molded product is peeled off. Through this setting, the operator can directly take out the silica gel molded product in the mold after the mold is opened, without the need to take out the mold core to the outside and then take out the silica gel molded product.

[0018] By turning back the connecting rod to the elastic convex piece and the concave groove after taking out the silica gel molded product, the connecting rod can be kept in vertical docking with the hinged rod, and the mold core on the connecting rod can be placed securely before the next mold closing, and this operation can realize directional swinging of the connecting rod, directional air blowing, directional taking, and directional swinging back of the connecting rod, thereby helping to realize full-automatic taking of the spherical silica gel molded product after demolding.

[0019] The additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 It is the structure schematic diagram of the utility model;

[0022] Figure 2 It is the structure schematic diagram of the utility model in the opened mold state and the upper die core in the disassembled state;

[0023] Figure 3 It is the structure schematic diagram of the lower die core in the utility model;

[0024] Figure 4Is the structure schematic view of the mold core and the power ejection rod in the utility model;

[0025] Figure 5 Is the explosion structure schematic view of the mold core and the power ejection rod in the utility model;

[0026] Figure 6 Is the structure schematic view of the mold core and the hinged rod under the state of overturning in the utility model;

[0027] Figure 7 Is the split structure schematic view of the mold core and the hinged rod under one view angle in the utility model;

[0028] Figure 8 Is the split structure schematic view of the mold core and the hinged rod under another view angle in the utility model.

[0029] The reference signs and names in the drawing are as follows:

[0030] Upper die main body 10, upper die core 11, glue feeding system 12, lower die main body 20, lower die core 21, mold core 22, ejection mechanism 30, power ejection rod 31, plug-in column 32, fixed pin 33, hinged rod 40, shaft connecting part 41, rotating shaft 42, elastic convex piece 43, plug hole 44, connecting rod 50, plug block 51, circular arc surface 52, flat surface 53, concave groove 54, semispherical groove 60, inner recess 61, gas blowing connecting boss 62, sealing ring 63. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] Please refer to Figures 1-8The utility model discloses an injection mold that can facilitate flexible swinging of silica gel finished product after mold opening for demolding, comprising a mold upper body 10 and a mold lower body 20 that cooperate with each other, the mold upper body 10 is provided with a mold upper kernel 11 and a glue inlet system 12 communicated with the mold upper kernel 11, the mold lower body 20 is provided with a mold lower kernel 21 and a mold core 22 suspended in the mold lower kernel 21, the mold upper body 10 and the mold lower body 20 are closed after mold opening, the mold upper kernel 11, the mold lower kernel 21 and the mold core 22 form a spherical cavity, the mold lower body 20 is further provided with an ejection mechanism 30 and a hinged rod 40 connected to the ejection mechanism 30, the lower end of the mold core 22 is provided with a connecting rod 50 connected to the hinged rod 40, the connecting rod 50 and the hinged rod 40 are hingedly connected, the ejection mechanism 30 is used to eject the hinged rod 40 from the mold lower kernel 21 after mold opening, so that the connecting rod 50 can swing on the hinged rod 40. In the above technical scheme, the hinged rod 40 is arranged between the position where the ejection mechanism 30 is connected to the mold core 22, the connecting rod 50 extending from the mold core 22 is used to hingedly connect with the hinged rod 40, so that after mold opening, the ejection mechanism 30 ejects the entire spherical silica gel molding product, because of the hinged connection between the hinged rod 40 and the connecting rod 50, the mold core 22 can swing along the hinged rod 40 in the mold after mold opening, so that the lower end of the silica gel molding product can be exposed at the position of the connecting rod 50, thereby facilitating air blowing along the position to separate the mold core 22 and the silica gel molding product, and finally stripping the silica gel molding product. Through this arrangement, the operator can directly take out the silica gel molding product in the mold after mold opening, without the need to take out the mold core 22 to the outside and then take out the silica gel molding product.

[0033] Please refer to Figures 4-8In the structure between the connecting rod 50 and the hinged rod 40, the lower end of the connecting rod 50 is shaped into an insertion block 51, the upper end of the hinged rod 40 is shaped into an axle connecting part 41 abutting against both sides of the insertion block 51, a rotating shaft 42 is transversely arranged between the insertion block 51 and the axle connecting part 41, so that the insertion block 51 can rotate on the two axle connecting parts 41 along the rotating shaft 42; in addition, on this basis, one side of the insertion block 51 is a circular arc surface 52, and the other side of the insertion block 51 is a flat surface 53, so that the connecting rod 50 can be flipped on the hinged rod 40 along the one side of the circular arc surface 52, and the connecting rod 50 can be vertically erected by abutting against the upper end of the hinged rod 40 through the flat surface 53. This structure facilitates the erection of the connecting rod 50 after the silicone molded product is taken out; in order to achieve the erection of the connecting rod 50, the structure between the hinged rod 40 and the connecting rod 50 is further arranged, that is, the hinged rod 40 is further provided with an elastic convex part 43 protruding from the upper end thereof, and the lower end of the connecting rod 50 is provided with a concave groove 54 matched with the elastic convex part 43, the connecting rod 50 and the hinged rod 40 are positioned by the elastic convex part 43 and the concave groove 54, through this arrangement, the connecting rod 50 can be flipped back to the elastic convex part 43 and the concave groove 54 after the silicone molded product is taken out, that is, the structure of the connecting rod 50 can be ensured to be vertically matched with the hinged rod 40, and the mold core 22 on the connecting rod 50 can be placed before the next mold closing, and this operation can realize the operation of directional flipping of the connecting rod 50, directional air blowing, directional taking, and directional flipping back of the connecting rod 50, thereby helping to realize the full-automatic taking of the spherical silicone molded product after demolding.

[0034] Please refer to Figure 4 , Figure 5 and Figure 8 , the ejection mechanism 30 is provided with a power ejection rod 31 that can be lifted by power, the power ejection rod 31 is shaped into an insertion column 32, the lower end of the hinged rod 40 is provided with an insertion hole 44 matched with the insertion column 32, the hinged rod 40 and the power ejection rod 31 are inserted and matched through the insertion column 32 and the insertion hole 44, and the lower end of the hinged rod 40 is provided with a fixing pin 33 transversely inserted into the insertion hole 44 and the insertion column 32, the fixing pin 33 is restricted in the lower mold body 20, this structure is simple, facilitates the assembly and disassembly between the ejection mechanism 30 and the hinged rod 40, and is firm and reliable in structure connection, facilitates the precise cooperation of the whole, and guarantees the molding quality of the finished product.

[0035] Please refer to Figures 1-3The upper die core 11 and the lower die core 21 are both provided with a semispherical groove 60 for forming a spherical cavity, and an inner recess 61 is arranged in the semispherical groove 60 for forming a spherical body with a plurality of sharp conical structures uniformly distributed on the surface; the upper die core 11 and the lower die core 21 are both provided with four semispherical grooves 60, and the die core 22 and the articulated rod 40 are both correspondingly provided with four, and the ejection mechanism 30 is used for driving the four articulated rods 40 to move up and down at the same time, so that the working efficiency of the mold can be greatly improved.

[0036] Please refer to Figures 2-3 The lower die core 21 is formed with a blow connecting boss 62 at the bottom of the semispherical groove 60, the connecting rod 50 and the articulated rod 40 are arranged in the blow connecting boss 62, so that the air blowing device can be accurately docked in the recess structure formed by the blow connecting boss 62 during demolding, and the high efficiency and accuracy of the air blowing operation and the docking sealing between the silica gel molded product and the air blowing device are ensured. In addition, the sealing ring 63 is arranged on the joint edge between the semispherical grooves 60 of the upper die core 11 and the lower die core 21, so as to ensure the air tightness of the spherical silica gel molded product during the molding process.

[0037] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. An injection mold that allows for easy and flexible demolding of a silicone product after mold opening, comprising an upper mold body (10) and a lower mold body (20) that cooperate with each other, the upper mold body (10) being provided with an upper mold core (11) and a glue injection system (12) communicating with the upper mold core (11), the lower mold body (20) being provided with a lower mold core (21) and a mold core (22) suspended in the lower mold core (21), and after the upper mold body (10) and the lower mold body (20) are closed, a spherical cavity is formed between the upper mold core (11), the lower mold core (21) and the mold core (22), characterized in that, The lower mold body (20) is also provided with an ejection mechanism (30) and a hinged rod (40) connected to the ejection mechanism (30). The lower end of the mold core (22) is provided with a connecting rod (50) connected to the hinged rod (40). The connecting rod (50) and the hinged rod (40) are hinged together. After the mold is opened, the ejection mechanism (30) is used to eject the hinged rod (40) onto the lower mold core (21) so that the connecting rod (50) can swing on the hinged rod (40).

2. The injection mold according to claim 1, which allows for flexible and flexible demolding of the silicone product after mold opening, is characterized in that... The lower end of the connecting rod (50) is formed with a plug (51), and the upper end of the hinge rod (40) is formed with a shaft connection part (41) that abuts against both sides of the plug (51). A rotating shaft (42) is transversely inserted between the plug (51) and the shaft connection part (41) so that the plug (51) can rotate along the rotating shaft (42) on the two shaft connection parts (41).

3. The injection mold according to claim 2, which allows for easy and flexible movement of the silicone product for demolding after mold opening, is characterized in that... One side of the insert (51) is an arc surface (52), and the other side of the insert (51) is a flat surface (53), so that the connecting rod (50) can flip along the arc surface (52) on the hinge rod (40), and the connecting rod (50) can be held vertically upright by the flat surface (53) against the upper end of the hinge rod (40).

4. The injection mold according to claim 3, which allows for easy and flexible movement of the silicone product for demolding after mold opening, is characterized in that... The hinge rod (40) is also provided with an elastic protrusion (43) protruding from its upper end. The lower end of the connecting rod (50) is provided with a recessed groove (54) that engages with the elastic protrusion (43). The connecting rod (50) and the hinge rod (40) are engaged and positioned by the elastic protrusion (43) and the recessed groove (54).

5. The injection mold according to claim 1, which allows for flexible and flexible demolding of the silicone product after mold opening, is characterized in that... The ejection mechanism (30) is equipped with a power ejection rod (31) that can be dynamically lifted and lowered. A plug-in post (32) is formed on the power ejection rod (31). The lower end of the hinge rod (40) is provided with a plug hole (44) that matches the plug-in post (32). The hinge rod (40) and the power ejection rod (31) are connected by the plug-in post (32) and the plug hole (44). A fixing pin (33) is provided at the lower end of the hinge rod (40) that is transversely inserted into the plug hole (44) and the plug-in post (32). The fixing pin (33) is constrained in the lower mold body (20).

6. The injection mold according to claim 1, which allows for flexible and flexible demolding of the silicone product after mold opening, is characterized in that... Both the upper mold core (11) and the lower mold core (21) are provided with hemispherical grooves (60) for forming spherical cavities. In the hemispherical grooves (60), recesses (61) are arrayed to form spherical bodies with a uniformly distributed cone-shaped structure on the surface.

7. An injection mold according to claim 6, which allows for easy and flexible movement of the silicone product for demolding after mold opening, characterized in that, The upper mold core (11) and the lower mold core (21) are each provided with four evenly distributed hemispherical grooves (60), and the mold core (22) and the hinge bar (40) are each provided with four corresponding grooves. The ejection mechanism (30) is used to simultaneously drive the four hinge bars (40) to move up and down.

8. The injection mold according to claim 6, which allows for flexible and flexible demolding of the silicone product after mold opening, is characterized in that... The lower mold core (21) has an air-blowing connecting boss (62) formed at the bottom of the hemispherical groove (60), and the connecting rod (50) and the hinge rod (40) are inserted through the air-blowing connecting boss (62).

9. An injection mold according to claim 6, which allows for flexible and flexible demolding of the silicone product after mold opening, characterized in that, A sealing ring (63) is provided on the mating edge between the hemispherical groove (60) of the upper mold core (11) and the lower mold core (21).

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