Injection mold for automobile forecabin decorating part

Abstract

The utility model discloses an automobile forecabin decorating part injection mold, belongs to the technical field of mold structures, and provides a more efficient automobile forecabin decorating part injection mold which comprises a fixed mold body, a configuration frame is fixedly connected to the back face of the fixed mold body, a hydraulic cylinder is fixedly connected to the configuration frame, and the movable end of the hydraulic cylinder is connected with a movable mold body. A second cavity is formed in the end face, opposite to the fixed mold, of the movable mold, a first cavity is formed in the end face, opposite to the movable mold, of the fixed mold, a receding cavity is formed in the position, on the inner wall of the first cavity, of the movable mold, an insertion hole is formed in the inner wall of the receding cavity, and an auxiliary mechanism is arranged on the front face of the fixed mold and comprises a synchronous frame. The side face, opposite to the fixed mold, of the synchronous frame is fixedly connected with a baffle ring through an insertion rod which is suitable for being matched with the insertion hole to form a sliding pair. According to the injection mold, the auxiliary mechanism and the aerostatic press are arranged on the fixed mold, the proper cavity and the proper channel are formed, the molded part is demolded under the action of gas, and the time of grabbing the molded part by a suction cup is saved, so that the output efficiency of the injection mold is effectively improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mold structures, in particular to an injection mold for an automobile front compartment decoration part. BACKGROUND

[0002] The automobile front compartment decoration part is usually a large-area injection part, and in the prior art, a chuck structure is usually used to suck the formed part out of a mold cavity, which affects the mold closing speed and reduces the output efficiency of the injection mold. SUMMARY

[0003] The application aims to provide an injection mold for an automobile front compartment decoration part.

[0004] To achieve the above purpose, the application provides an injection mold for an automobile front compartment decoration part: a fixed mold is provided, the back surface of the fixed mold is fixedly connected with a configuration frame, the configuration frame is fixedly connected with a hydraulic cylinder, the movable end of the hydraulic cylinder is connected with a movable mold, the end surface of the movable mold opposite to the fixed mold is provided with a second mold cavity, the end surface of the fixed mold opposite to the movable mold is provided with a first mold cavity, the inner wall of the first mold cavity is provided with a let-in cavity, the inner wall of the let-in cavity is provided with a insertion hole, the front surface of the fixed mold is provided with an auxiliary mechanism, the auxiliary mechanism comprises a synchronous frame, the side surface of the synchronous frame opposite to the fixed mold is fixedly connected with a blocking ring through a insertion rod, the insertion rod is suitable for cooperating with the insertion hole to form a sliding pair, the blocking ring is suitable for cooperating with the let-in cavity to form a sliding pair, the end surface of the blocking ring is suitable for being flush with the inner wall of the first mold cavity, the outer side surface of the fixed mold is further provided with an air pressure machine, the blocking ring is further suitable for controlling the opening and closing of the let-in cavity, and the front surface of the fixed mold is further provided with an injection port in communication with the first mold cavity, which serves as a channel for the injection liquid to enter the mold cavity.

[0005] As a preferred, the synchronous frame and the fixed mold are connected with an electric telescopic rod, the cylinder barrel of the electric telescopic rod is fixedly connected with the synchronous frame, and the movable end of the electric telescopic rod is fixedly connected with the front surface of the fixed mold, so as to drive the synchronous frame to move relative to the fixed mold.

[0006] As a preferred, the air pressure machine comprises an air pump and a pressure storage tank fixedly connected with the fixed mold, an electric control valve is arranged in the gas inlet and outlet end of the pressure storage tank, the fixed mold is provided with an air flow channel in communication with the let-in cavity and the pressure storage tank, and operating air is discharged from the mold cavity or injected into the mold cavity.

[0007] As a preferred, the number of the insertion rods and the blocking rings is several, the length direction of the insertion rod is parallel to the telescopic direction of the electric telescopic rod, and the number of the electric telescopic rods is also several, so that a more uniform force is applied to the synchronous frame.

[0008] As a preferred, the end face of the fixed mold opposite to the movable mold is provided with a matching cavity in communication with the first cavity, the movable mold has an inner plate opposite to the end face of the fixed mold, which is adapted to be inserted into the matching cavity, and the second cavity is formed in the end face of the inner plate opposite to the first cavity, so that the first cavity and the second cavity are in alignment and the complete mold cavity is formed when the edges are coincided.

[0009] As a preferred, the side face of the inner plate is adapted to be in contact with the inner wall of the matching cavity, and the inner plate is provided with a sealing gasket on the side face in contact with the matching cavity, so as to ensure the air tightness in the mold cavity when the mold is closed.

[0010] As a preferred, the side face of the blocking ring in contact with the inner wall of the accommodation cavity is provided with a sealing ring, so as to further ensure the sealing of the mold cavity.

[0011] As a preferred, a plurality of guide rods are fixedly connected between the configuration frame and the fixed mold, the movable mold is provided with guide holes penetrating through the front and rear end faces, and the guide rods are arranged to pass through the guide holes to form a sliding pair, so as to ensure the stability of the movable mold.

[0012] Compared with the prior art, the application has the following advantages:

[0013] (1) By providing the auxiliary mechanism and the air pressure machine on the fixed mold, and by forming appropriate cavities and channels, the molded part is demolded by using the action of gas, so that the time for the suction cup component to grab the molded part is saved, thereby effectively improving the output efficiency of the injection mold, and in the process of being pushed out by the air pressure, the inner wall of the mold cavity is also cooled and dusted, so that the quality of the output automobile front compartment decoration part is better.

[0014] (2) The air pressure machine and the auxiliary mechanism in the design can also form a negative pressure in the mold cavity, which not only reduces the pressure required to be provided by the external extrusion device, but also makes it easier to fill the mold cavity and reduces the generation of air holes. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a first three-dimensional schematic view of the overall structure of the automobile front compartment decoration part injection mold.

[0016] Figure 2 It is a second three-dimensional schematic view of the overall structure of the automobile front compartment decoration part injection mold.

[0017] Figure 3 It is a three-dimensional structural schematic view of the air pressure machine connected with the fixed mold of the automobile front compartment decoration part injection mold.

[0018] Figure 4 It is a three-dimensional structural schematic view of the auxiliary mechanism cooperating with the fixed mold of the automobile front compartment decoration part injection mold.

[0019] Figure 5 A partial enlarged view of A of the automobile front compartment decoration piece injection mold Figure 4 A partial enlarged view of A of the automobile front compartment decoration piece injection mold

[0020] Figure 6 A partial enlarged view of B of the automobile front compartment decoration piece injection mold

[0021] Figure 7 A partial enlarged view of B of the automobile front compartment decoration piece injection mold Figure 6 A partial enlarged view of B of the automobile front compartment decoration piece injection mold

[0022] Figure 8 A partial enlarged view of B of the automobile front compartment decoration piece injection mold

[0023] Figure 9 A partial enlarged view of B of the automobile front compartment decoration piece injection mold

[0024] Figure 10 A partial enlarged view of B of the automobile front compartment decoration piece injection mold

[0025] In the figure: 1, fixed mold; 101, fitting cavity; 102, first cavity; 103, insertion hole; 104, accommodation cavity; 105, injection port; 106, air flow channel; 2, auxiliary mechanism; 201, insertion rod; 202, blocking ring; 203, electric telescopic rod; 204, synchronous frame; 3, air pressure machine; 301, air pump; 302, pressure storage tank; 4, guide rod; 5, movable mold; 501, embedded plate; 502, second cavity; 503, guide hole; 6, configuration frame; 7, hydraulic cylinder. DETAILED DESCRIPTION

[0026] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments, without conflict.

[0027] In the description of the present application, it should be noted that for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0029] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] As Figures 1-10 The automobile front compartment decoration injection mold shown in the figure comprises a fixed mold 1, a configuration frame 6 is fixedly connected to the back surface of the fixed mold 1, and actually a plurality of horizontally extending guide rods 4 are fixedly connected between the configuration frame 6 and the fixed mold 1. In the embodiment, the guide rods 4 are four, respectively located at the four corners of the fixed mold 1. The configuration frame 6 is fixedly connected with a hydraulic cylinder 7, which can generate a large thrust force and can keep the position stable. The movable end of the hydraulic cylinder 7 is connected with a movable mold 5, so as to realize the mold opening and closing action. The movable mold 5 is provided with guide holes 503 penetrating the front and rear end surfaces at the four corners, for the guide rods 4 to pass through to form a sliding pair, thereby further improving the movement stability of the movable mold 5. The end surface of the fixed mold 1 opposite to the movable mold 5 is provided with a first cavity 102, which is the main cavity for forming the automobile front compartment decoration. The front surface of the fixed mold 1 is also provided with an injection port 105 communicating with the first cavity 102, for the molten injection liquid to enter the cavity. The end surface of the fixed mold 1 opposite to the movable mold 5 is provided with a matching cavity 101 communicating with the first cavity 102. The end surface of the movable mold 5 opposite to the fixed mold 1 is provided with a second cavity 502, which forms a complete mold cavity with the first cavity 102. The end surface of the movable mold 5 opposite to the fixed mold 1 has an embedded plate 501, which is inserted into the matching cavity 101 when the mold is closed. The second cavity 502 is provided on the end surface of the embedded plate 501 opposite to the first cavity 102. The side surface of the embedded plate 501 will be in contact with the inner wall of the matching cavity 101. In order to further form a tight matching surface, the embedded plate 501 will also be provided with a sealing gasket on the side surface in contact with the matching cavity 101, so as to ensure the air tightness of the mold cavity after the mold is closed.

[0031] The movable mold 5 is provided with a let-in cavity 104 on the inner wall of the first cavity 102. The inner wall of the let-in cavity 104 is a cylindrical surface. The let-in cavity 104 is provided with a plug hole 103 which is also cylindrical. The plug hole 103 has the same diameter as the let-in cavity 104. The diameter of the plug hole 103 is obviously smaller than that of the let-in cavity 104. The front surface of the fixed mold 1 is provided with an auxiliary mechanism 2 which is used to help the entire mold complete the preparation before injection molding and the demolding work after injection molding. The auxiliary mechanism 2 includes a synchronous frame 204 which is parallel to the front surface of the fixed mold 1. An electric telescopic rod 203 is connected between the synchronous frame 204 and the fixed mold 1. Specifically, the cylinder of the electric telescopic rod 203 is fixedly connected with the synchronous frame 204. The movable end of the electric telescopic rod 203 is fixedly connected with the front surface of the fixed mold 1. The electric telescopic rod 203 is used to drive the synchronous frame 204 to adjust the position relative to the fixed mold 1. The side surface of the synchronous frame 204 opposite to the fixed mold 1 is fixedly connected with a blocking ring 202 through a plug rod 201. The plug rod 201 and the blocking ring 202 are also cylindrical and coaxial. The plug rod 201 is used to cooperate with the plug hole 103 to form a sliding pair. The blocking ring 202 is used to cooperate with the let-in cavity 104 to form a sliding pair. The side surface of the blocking ring 202 which is in contact with the inner wall of the let-in cavity 104 is provided with a sealing ring to ensure the air tightness inside the let-in cavity 104 when the blocking ring 202 is located in the let-in cavity 104. Actually, the number of the plug rod 201 and the blocking ring 202 is several. They are uniformly arranged on the inner wall of the first cavity 102. The length direction of the plug rod 201 is parallel to the telescopic direction of the electric telescopic rod 203 so that there is no motion interference. The number of the electric telescopic rod 203 is also several. Two are provided in this application so that the synchronous frame 204 made of alloy is more evenly stressed and is less likely to be deformed.

[0032] The end surface of the blocking ring 202 can be flush with the inner wall of the first cavity 102. The blocking ring 202 can also control the opening and closing of the let-in cavity 104 so as to make the let-in cavity 104 communicate with or disconnect from the first cavity 102. The outer side surface of the fixed mold 1 is also provided with an air pressure machine 3 which is used to produce high pressure or negative pressure by sucking in or discharging air. The air pressure machine 3 includes an air pump 301 and a pressure storage tank 302 which are fixedly connected with the fixed mold 1. The air pump 301 is used to drive the air to transfer. The pressure storage tank 302 can store high pressure gas or form a low pressure area. An electric control valve is arranged in the gas inlet and outlet end of the pressure storage tank 302 to control the opening and closing of the pressure storage tank 302. The fixed mold 1 is provided with an air flow channel 106 which communicates the let-in cavity 104 and the pressure storage tank 302. The electric control valve is located at the end of the air flow channel 106.

[0033] Working principle: first, the movable mold 5 is driven by the hydraulic cylinder 7 to combine with the fixed mold 1, at this time the first cavity 102 and the second cavity 502 form a sealed mold cavity, but there is air inside, then the electric telescopic rod 203 retracts, the blocking ring 202 protrudes from the accommodation cavity 104, at this time the air flow channel 106 is connected with the inside of the mold cavity, the electric control valve in the input and output end of the pressure tank 302 is opened, the air pump 301 is started, the air in the mold cavity is pumped out, after the mold cavity is pumped into a vacuum, the blocking ring 202 is reset to the accommodation cavity 104, and the end surface of the blocking ring 202 is flush with the inner wall of the first cavity 102 under the precise control of the electric telescopic rod 203, at the same time the electric control valve in the input and output end of the pressure tank 302 is closed, the air pump 301 is reversed to pressurize the originally negative pressure inside the pressure tank 302, then the external hot melting equipment can inject molten injection into the mold cavity through the injection port 105, because of the vacuum in the mold cavity, the injection liquid can be actively sucked, so the external hot melting equipment does not need to exert a large extrusion force to fill the mold cavity with injection liquid, after the mold cavity is filled with injection liquid, the internal pressure is restored, the automobile front compartment decoration part is formed after cooling, the movable mold 5 is driven by the hydraulic cylinder 7 to separate from the fixed mold 1, because the first cavity 502 is deeper than the second cavity, the contact area with the formed part is larger, so the automobile front compartment decoration part is formed in the first cavity 102 after the mold is separated, then the blocking ring 202 is driven by the electric telescopic rod 203 to push the formed part away from the low cavity 102, at the same time the electric control valve in the input and output end of the pressure tank 302 is opened, the high pressure gas will be discharged from the opened accommodation cavity 104 through the air flow channel 106, the automobile front compartment decoration part is blown away from the first cavity, because the air flow is also blocked by the automobile front compartment decoration part, so the air flow will also flow along the inner wall of the mold cavity, cooling and dust removal of the inner wall of the mold cavity, which is just ready for the next injection work.

[0034] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, the above embodiments and descriptions in the specification are only the principles of the present application, various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An injection mold for automobile front cabin decoration parts, characterized by: The invention comprises a fixed mold (1), a configuration frame (6) is fixedly connected to the back of the fixed mold (1), a hydraulic cylinder (7) is fixedly connected to the configuration frame (6), a movable end of the hydraulic cylinder (7) is connected to a movable mold (5), a second cavity (502) is provided on the end face of the movable mold (5) facing the fixed mold (1), a first cavity (102) is provided on the end face of the fixed mold (1) facing the movable mold (5), a clearance cavity (104) is provided on the inner wall of the first cavity (102) of the movable mold (5), a socket (103) is provided on the inner wall of the clearance cavity (104), an auxiliary mechanism (2) is provided on the front face of the fixed mold (1), and the auxiliary mechanism (2) includes a synchronization frame (2 04), the synchronization frame (204) is fixedly connected to a retaining ring (202) on the side facing the fixed mold (1) through an insert rod (201), the insert rod (201) is suitable for cooperating with the socket (103) to form a sliding pair, the retaining ring (202) is suitable for cooperating with the clearance cavity (104) to form a sliding pair, the end face of the retaining ring (202) is suitable for keeping flush with the inner wall of the first cavity (102), the outer side face of the fixed mold (1) is also provided with an air press (3), the retaining ring (202) is also suitable for controlling the opening and closing of the clearance cavity (104), and the front face of the fixed mold (1) is also provided with an injection port (105) connected to the first cavity (102).

2. The injection mold for automobile front cabin decoration according to claim 1, characterized in that: An electric telescopic rod (203) is connected between the synchronization frame (204) and the fixed mold (1); the cylinder of the electric telescopic rod (203) is fixedly connected to the synchronization frame (204); and the movable end of the electric telescopic rod (203) is fixedly connected to the front face of the fixed mold (1).

3. The injection mold for automobile front cabin decoration according to claim 2, characterized in that: The air compressor (3) comprises an air pump (301) and a pressure storage box (302) fixedly connected to the fixed mold (1); an electric control valve is provided in the gas inlet and outlet ends of the pressure storage box (302); and the fixed mold (1) is provided with an air flow channel (106) connecting the clearance cavity (104) and the pressure storage box (302).

4. The injection mold for automobile front cabin decoration according to claim 3, characterized in that: There are several inserting rods (201) and retaining rings (202). The length direction of the inserting rod (201) is parallel to the telescopic direction of the electric telescopic rod (203). There are also several electric telescopic rods (203).

5. The injection mold for automobile front cabin decoration according to any one of claims 1 to 4, characterized in that: The end surface of the fixed mold (1) facing the movable mold (5) is provided with a fitting cavity (101) connected to the first cavity (102); the end surface of the movable mold (5) facing the fixed mold (1) is provided with an inner insert plate (501) suitable for being inserted into the fitting cavity (101); the second cavity (502) is provided on the end surface of the inner insert plate (501) facing the first cavity (102).

6. The injection mold for automobile front cabin decoration according to claim 5, characterized in that: The side surfaces of the inner insert plate (501) are adapted to contact the inner wall of the fitting cavity (101), and the side surfaces of the inner insert plate (501) in contact with the fitting cavity (101) are provided with sealing gaskets.

7. The injection mold for automobile front cabin decoration according to claim 6, characterized in that: A sealing ring is provided on the side of the retaining ring (202) that contacts the inner wall of the clearance cavity (104).

8. The injection mold for automobile front cabin decoration according to any one of claims 1 to 4, characterized in that: A plurality of guide rods (4) are fixedly connected between the configuration frame (6) and the fixed die (1), and the movable die (5) is provided with guide holes (503) passing through the front and rear end surfaces for the guide rods (4) to pass through to form a sliding pair.

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