Integrated forming device for light-weight EPP (Expanded Polypropylene) foam component for automobile

Abstract

The invention relates to the technical field of automobile part production equipment, and discloses an integrated forming device of a lightweight EPP foam component for an automobile, the integrated forming device comprises a frame body, a conveying assembly, a clamping assembly and a mold assembly, the mold assembly comprises a fixed mold and a movable mold, the fixed mold is fixedly mounted at the top of the frame body, and the movable mold is fixedly mounted at the bottom of the frame body; the movable mold is arranged on the opposite side of the fixed mold, the movable mold is connected with the frame body through an electric push rod, the multiple sets of clamping assemblies are distributed on a conveying plane of the conveying assembly at equal intervals in the conveying direction, and the clamping assemblies are used for clamping a reinforcing framework; through cooperation of the conveying assembly and the clamping assembly, stable clamping and efficient conveying of the reinforcing framework are achieved; and the reinforcing framework is driven to synchronously move and be stably embedded into the mold cavity through the guiding effect of the movable mold in the mold closing process, so that the problems that in the prior art, the framework is prone to displacement, not firm in combination and the like are effectively solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile part production equipment, in particular to an integrated forming device for a lightweight EPP foam component for an automobile. BACKGROUND

[0002] With the increasing requirements of the automobile industry for light weight, energy saving, environmental protection and safety, EPP materials are widely used in automobile bumpers, instrument panels, seat headrests and other interior and safety structural parts due to their light weight, high toughness and excellent cushioning and energy absorption performance. At present, in order to improve the structural strength and load capacity of the EPP component, a reinforcing framework such as a metal support, a plastic frame or a composite material structure is usually preset in the internal during the foaming forming process.

[0003] However, in the prior art, the EPP component with the built-in reinforcing framework still has many technical difficulties in the integrated forming process. In particular, in the steam foaming forming process, high-temperature and high-pressure steam needs to be introduced into the mold to make the EPP particles expand, fuse and form. The airflow impact, particle expansion stress and mold closing force generated during the foaming process can easily cause the preset reinforcing framework to displace, tilt or deviate in the mold cavity, thereby causing the reinforcing framework and the EPP material to be not firmly combined and reducing the overall structural stability. Therefore, an integrated forming device for a lightweight EPP foam component for an automobile is proposed. SUMMARY

[0004] In order to solve the problem that the prior art can easily cause the preset reinforcing framework to displace, tilt or deviate in the mold cavity during foaming, thereby causing the reinforcing framework and the EPP material to be not firmly combined and reducing the overall structural stability, the application provides an integrated forming device for a lightweight EPP foam component for an automobile.

[0005] The integrated forming device for a lightweight EPP foam component for an automobile provided by the application adopts the following technical scheme:

[0006] An integrated forming device for a lightweight EPP foam component for an automobile, comprising a frame body, a conveying assembly, a clamping assembly and a mold assembly, the mold assembly comprising a fixed mold and a movable mold, the fixed mold being fixedly installed on the top of the frame body, the movable mold being arranged opposite to the fixed mold, the movable mold being connected with the frame body through an electric push rod, the clamping assembly being provided in multiple groups and being equidistantly distributed on the conveying plane of the conveying assembly along the conveying direction, the clamping assembly being used for clamping the reinforcing framework, the movable mold and the fixed mold being provided with a groove, the groove being adapted to the extension of the reinforcing framework when the groove is combined; the clamping end of the clamping assembly can move parallel to the direction of the movable mold, and the movable mold can drive the reinforcing framework to move to the side of the fixed mold when the mold is closed.

[0007] Preferably, the conveying assembly comprises conveying rollers rotatably mounted on both sides of the frame body, the outer surfaces of the two groups of conveying rollers are collectively sleeved with a conveying belt, a motor is fixedly mounted on the surface of the frame body, and the output shaft of the motor is fixedly connected with one of the conveying rollers.

[0008] Preferably, the moving direction of the conveying belt is perpendicular to the moving direction of the movable mold.

[0009] Preferably, the clamping assembly comprises a sliding seat, a sliding block is slidably connected in the sliding seat, an elastic member is arranged in the sliding seat and connected with the sliding block, a socket is fixedly connected to the top of the sliding block, and a fixing bolt is inserted into the socket.

[0010] Preferably, the elastic member comprises a guide rod fixedly mounted in the sliding seat, a spring is sleeved on the surface of the guide rod, one end of the spring is fixedly connected with the inner surface of the sliding seat, and the other end of the spring is fixedly connected with the sliding block.

[0011] Preferably, the guide rod is arranged parallel to the moving direction of the movable mold.

[0012] Preferably, in a natural state, based on the perspective of the conveying direction, the spring makes the sliding block located between the fixed mold and the movable mold.

[0013] To sum up, the present application has the following beneficial technical effects:

[0014] The present application realizes stable clamping and efficient conveying of the reinforcing framework through the cooperation of the conveying assembly and the clamping assembly, and through the guiding effect of the movable mold during the mold closing process, the reinforcing framework is driven to move synchronously and stably embedded in the mold cavity, thereby effectively solving the problems of easy displacement of the framework, poor combination and the like in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the whole application embodiment;

[0016] Figure 2 is a structural schematic view of the application embodiment from another angle;

[0017] Figure 3 is a structural schematic view of the clamping assembly of the application embodiment;

[0018] Figure 4 is a structural schematic view of the fixed mold of the application embodiment.

[0019] Explanation of reference signs: 1, frame body; 2, conveying assembly; 21, conveying belt; 22, motor; 23, conveying roller; 3, clamping assembly; 31, sliding seat; 32, guide rod; 33, spring; 34, sliding block; 35, fixing bolt; 36, socket; 4, mold assembly; 41, fixed mold; 42, movable mold; 43, electric push rod; 44, groove. DETAILED DESCRIPTION

[0020] The following will be described in detail in combination with the accompanying Figures 1-4 The application is further described in detail.

[0021] The embodiment of the application discloses a kind of integrated forming device of lightweight EPP foam component for automobile, including frame body 1, conveying assembly 2, clamping assembly 3 and mold assembly 4, the mold assembly 4 includes fixed mold 41 and movable mold 42, the fixed mold 41 is fixedly installed at the top of frame body 1, the movable mold 42 is arranged at the opposite side of fixed mold 41, the movable mold 42 is connected with frame body 1 by electric push rod 43, reciprocating movement of movable mold 42 is realized, the clamping assembly 3 is provided with multiple groups, and multiple clamping assemblies 3 are equidistantly distributed on the conveying plane of conveying assembly 2 along conveying direction, the clamping assembly 3 is used to clamp reinforcing framework, the movable mold 42 and fixed mold 41 are provided with groove 44, the groove 44 is combined and matched with the extension of reinforcing framework;The clamping end of clamping assembly 3 can be moved parallel to the direction of movable mold 42, when moulding, the movable mold 42 can drive reinforcing framework to move to the side of fixed mold 41.

[0022] Further, the conveying assembly 2 includes conveying roller 23 rotatably installed at both sides of frame body 1, the outer surfaces of two groups of conveying rollers 23 are commonly sleeved with conveying belt 21, motor 22 is fixedly installed on the surface of frame body 1, and the output shaft of motor 22 is fixedly connected with one group of conveying rollers 23;The moving direction of conveying belt 21 is perpendicular to the moving direction of movable mold 42, conveying roller 23 is driven to rotate by motor 22, the movement of conveying belt 21 is realized, so as to drive clamping assembly 3 to move.

[0023] Further, the clamping assemblies 3 each include a sliding seat 31, a sliding block 34 is slidably connected inside the sliding seat 31, an elastic member is arranged inside the sliding seat 31 and connected with the sliding block 34, a socket 36 is fixedly connected to the top of the sliding block 34, and a fixing bolt 35 is inserted on the surface of the socket 36; the elastic member includes a guide rod 32 fixedly installed inside the sliding seat 31, a spring 33 is sleeved on the surface of the guide rod 32, one end of the spring 33 is fixedly connected with the inner surface of the sliding seat 31, and the other end of the spring 33 is fixedly connected with the sliding block 34; the guide rod 32 is arranged in parallel with the moving direction of the movable die 42; in a natural state, based on the perspective of the conveying direction, the spring 33 makes the sliding block 34 located between the fixed die 41 and the movable die 42; the reinforcing framework unloading station is arranged on both sides of the conveying assembly 2, the loading station is located at the starting end of the conveying assembly 2, and is used for clamping the reinforcing framework to be processed on the clamping assembly 3, so as to enter the subsequent conveying and molding processes, and the unloading station is located at the end of the conveying assembly 2, and is used for releasing the reinforcing framework clamped by the clamping assembly 3 and the wrapped component after the EPP component is completed molding and demolding; specifically, when loading, the lower part of the reinforcing framework is inserted into the inside of the socket 36, and the fixing bolt 35 is tightened to fix the reinforcing framework; when disassembling, the fixing bolt 35 is loosened, and the reinforcing framework can be pulled out.

[0024] The operation steps of the present application are as follows: the workers install the reinforcing frameworks on the clamping assemblies 3 in sequence at the loading station, and when the conveying assembly 2 sends the clamping assemblies 3 clamping the reinforcing frameworks to the molding area, the mold assembly 4 starts the molding operation. Specifically, the electric push rod 43 drives the movable die 42 to move towards the fixed die 41, and the mold closing is completed. In this process, the movable die 42 and the fixed die 41 are matched with the groove body 44, the shape of the groove body 44 is matched with the extension part of the reinforcing framework, and it is ensured that the reinforcing framework can be accurately embedded in the mold cavity. At the same time, the clamping end of the clamping assembly 3 can slide synchronously along the moving direction of the movable die 42 under the pushing of the movable die 42, so as to drive the reinforcing framework to move to the side of the fixed die 41, and the spring 33 is compressed. At this time, the reinforcing framework is completely embedded in the groove body 44 between the fixed die 41 and the movable die 42, and the closed space formed by the groove body 44 firmly fixes the reinforcing framework, preventing it from being displaced due to air flow impact or particle expansion stress during the steam foaming process.

[0025] After the clamping, conveying and closing operations of the reinforcing framework are completed, a closed cavity is formed between the fixed mold 41 and the movable mold 42, which matches the shape of the EPP foam component to be formed. At this time, the external injection molding machine injects pre-heated and expanded EPP foam particles into the cavity through the injection port on the mold. The EPP foam particles further expand and fuse under the action of high-temperature and high-pressure steam, eventually filling the entire cavity space. In this process, the mold assembly 4 is provided with steam channels, and the steam is uniformly distributed around the cavity through these channels to ensure that the EPP particles can fully fuse to form an EPP foam component with a dense structure and good strength; when the EPP foam component is cooled and shaped, the electric push rod 43 starts to work, driving the movable mold 42 to move away from the fixed mold 41 along the guide rail, realizing the opening of the mold. During the opening process, the movable mold 42 and the fixed mold 41 gradually separate, and the cavity is opened, exposing the formed EPP foam component.

[0026] It is worth noting that the movable mold 42 not only realizes the separation of the mold during the opening process, but also prepares for the subsequent demolding operation through the linkage structure between it and the clamping assembly 3. After the mold is opened, the formed EPP foam component is pushed away from the surface of the cavity of the fixed mold 41 by the elastic force, thereby realizing automatic demolding. When the movable mold 42 is completely returned, the compressed spring 33 resets, driving the slider 34 and the reinforcing framework to move, so that the component is demolded. After the demolding operation is completed, the conveying assembly 2 is started, driving the clamping assembly 3 and the clamped EPP foam component to move along the conveying belt 21 to the downstream disassembly station; at the same time, the next reinforcing framework on the conveying belt 21 is synchronously conveyed to the processing position below the mold assembly 4, preparing for the next molding cycle.

[0027] In actual use, in order to ensure that the reinforcing framework can be accurately positioned at the center of the fixed mold 41 and the movable mold 42 to realize precise molding of the EPP foam component, the moving distance of the conveying assembly 2 needs to have high-precision positioning control function. This function precisely controls the operation of the conveying assembly 2 through an external control mechanism, ensuring that the reinforcing framework clamped by the clamping assembly 3 can accurately enter the processing position of the mold assembly 4 and align with the center of the mold cavity. The external control mechanism can be selected from existing conventional devices, for example, a programmable logic controller can be used as the core control unit, which is responsible for receiving sensor signals, executing control programs and outputting control instructions, and an optical sensor is used to detect whether the clamping assembly 3 has reached the specified station to realize position feedback and positioning of the reinforcing framework. This will not be described here.

[0028] Finally should be explained are a few points: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the term "installation", "connected", "connection" should be broad, can be mechanical or electrical connection, but also can be two elements inside the communication, can be directly connected, "up", "down", "left", "right" and so on, only for the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change;

[0029] Second: the present application discloses the drawings in the embodiment, only involves the structure related to the present application, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0030] Finally: the above only for the preferred embodiment of the present application, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

[0031] The above are the preferred embodiments of the present application, and not limited by the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application, should be covered within the protection scope of the present application.

Claims

1. A device for integrated molding of a lightweight EPP foam component for automobiles, comprising a frame body (1), a conveying assembly (2), a clamping assembly (3) and a mold assembly (4), characterized in that, The mold assembly (4) comprises a fixed mold (41) and a movable mold (42), the fixed mold (41) is fixedly installed on the top of the frame body (1), the movable mold (42) is arranged on the opposite side of the fixed mold (41), the movable mold (42) is connected with the frame body (1) through an electric push rod (43), the clamping assembly (3) is provided with a plurality of groups, and the plurality of groups of clamping assemblies (3) are equidistantly distributed on the conveying plane of the conveying assembly (2) along the conveying direction, the clamping assembly (3) is used for clamping the reinforcing framework, the movable mold (42) and the fixed mold (41) are provided with a groove (44), and the groove (44) is matched with the extension part of the reinforcing framework when the groove (44) is combined. The clamping end of the clamping assembly (3) can move in parallel to the direction of the movable mold (42), and when the mold is closed, the movable mold (42) can drive the reinforcing framework to move to the side of the fixed mold (41).

2. The integrated molding device of the lightweight EPP foam component for a vehicle according to claim 1, wherein The conveying assembly (2) comprises conveying rollers (23) rotatably installed on both sides of the frame body (1), the outer surfaces of the two groups of conveying rollers (23) are jointly sleeved with a conveying belt (21), the frame body (1) is fixedly installed with a motor (22), and the output shaft of the motor (22) is fixedly connected with one group of conveying rollers (23).

3. The integrated molding device of a lightweight EPP foam component for a vehicle according to claim 2, wherein The moving direction of the conveying belt (21) is perpendicular to the moving direction of the movable mold (42).

4. The integrated molding device of the lightweight EPP foam component for a vehicle according to claim 3, wherein The clamping assembly (3) comprises a sliding seat (31), the sliding seat (31) is internally and slidably connected with a sliding block (34), the sliding seat (31) is internally provided with an elastic member connected with the sliding block (34), the top of the sliding block (34) is fixedly connected with a socket (36), and the surface of the socket (36) is inserted with a fixing bolt (35).

5. The integrated molding device of a lightweight EPP foam member for a vehicle according to claim 4, characterized by, The elastic member comprises a guide rod (32) fixedly installed in the sliding seat (31), the surface of the guide rod (32) is sleeved with a spring (33), one end of the spring (33) is fixedly connected with the inner surface of the sliding seat (31), and the other end of the spring (33) is fixedly connected with the sliding block (34).

6. The integrated molding device of a lightweight EPP foam member for a vehicle according to claim 5, wherein The guide rod (32) is arranged in parallel to the moving direction of the movable mold (42).

7. The integrated molding device of a lightweight EPP foam member for a vehicle according to claim 6, characterized by, In a natural state, based on the perspective of the conveying direction, the spring (33) makes the sliding block (34) located between the fixed mold (41) and the movable mold (42).

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