Low-pressure injection molding fabric embedding tool for automotive trim plastic part

Abstract

The utility model discloses an automobile interior plastic part low-pressure injection molding fabric embedding tool which comprises a static mold assembly, a tool assembly and a movable mold assembly, and the tool assembly is arranged between the static mold assembly and the movable mold assembly. The tool assembly comprises an aluminum alloy frame and a grabbing and embedding tool, and the grabbing and embedding tool is connected with one side of the aluminum alloy frame. The grabbing and embedding tool comprises a fabric grabbing mechanism, a fabric embedding mechanism and a photoelectric sensor; the number of the fabric grabbing mechanisms is four. The photoelectric sensor is arranged on the inner side of the fabric grabbing mechanism and connected with the aluminum alloy frame in a fastened mode. The fabric embedding mechanism is arranged in the middle of a square formed by the four fabric grabbing mechanisms and is connected with the reversing connecting mechanism through a manipulator, so that the low-pressure injection molding fabric is horizontally clamped and secondarily positioned and embedded into a hanging needle of a cavity of a movable mold assembly, automation is achieved, manual operation is omitted, the processes of manually embedding the fabric and manually starting and stopping an injection molding machine are reduced, and the production efficiency is improved. The safety risk is avoided, the labor cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical equipment technical field, specifically, the utility model relates to the low pressure injection of automobile interior plastic part fabric burying frock. BACKGROUND

[0002] With the development of automobile industry, people's requirements for automobile manufacturing process are higher and higher. In order to improve the sensory level and comfort of automobile interior parts, more and more automobile interior parts surfaces use injection molding process with hard plastic as base material framework, fabric, soft plastic as surface layer. The traditional process is to spray glue or adhesive on the product surface, and then cover the fabric;Its shortcomings are many processes, long cycle, low production efficiency. The main machine factory requires the air quality in the car, and the harmful substances volatilized by the glue or adhesive seriously affect the air quality in the car.

[0003] Therefore, low pressure injection process is used instead, and low pressure injection process needs to put fabric (fabric or leather) into the mold in advance, inject the product base material glue into the mold cavity by the screw rod thrust of injection molding machine, use the stretch rate of fabric to make one side of the fabric tightly adhere to the product base material and become one, and then take out the product after solidification and molding. Low pressure injection process needs to design sharp and sharp hanging needle in the mold to position and fix the fabric, and artificial needs to enter the injection molding machine by means of ladder to fix the fabric on the hanging needle by piercing or through the pre punched positioning hole. The above operation mode has great safety risk, increases the labor cost and has low production efficiency. UTILITY MODEL CONTENTS

[0004] The utility model provides automobile interior plastic part low pressure injection fabric burying frock to solve the technical problems in the above background art.

[0005] In order to realize the above purpose, the technical scheme adopted by the utility model is as follows: automobile interior plastic part low pressure injection fabric burying frock, including static die assembly, frock assembly and movable die assembly, and frock assembly is arranged between static die assembly and movable die assembly;The frock assembly includes aluminum alloy frame and grabbing burying frock, the grabbing burying frock for grabbing and burying fabric is connected with one side of aluminum alloy frame;The grabbing burying frock includes fabric grabbing mechanism, fabric burying mechanism and photoelectric sensor;The fabric grabbing mechanism is equipped with four, and is used for grabbing four corners of fabric;The photoelectric sensor is arranged in the inner side of fabric grabbing mechanism, and is tightly connected with aluminum alloy frame;The fabric burying mechanism is arranged in the square middle formed by four fabric grabbing mechanisms.

[0006] Preferably, the fabric grabbing mechanism comprises a first cylinder, an angle plate one, an adjustable support one and a pneumatic needle clamp, the cylinder body of the first cylinder is fixedly connected with the aluminum alloy frame, the angle plate one is fixedly connected with the end of the piston rod of the first cylinder, the adjustable support one is fixedly connected with the angle plate one in a position-adjustable manner, and the pneumatic needle clamp is fixedly connected with the end of the adjustable support one.

[0007] Preferably, the pneumatic needle clamp comprises a first needle clamp cylinder, a first needle, a second needle clamp cylinder and a second needle, the first needle clamp cylinder and the second needle clamp cylinder are arranged in a splayed manner, the first needle is driven to extend and retract by the first needle clamp cylinder, and the second needle is driven to extend and retract by the second needle clamp cylinder.

[0008] Preferably, the fabric burying mechanism comprises a material burying cylinder, an angle plate two and a pressing plate, the angle plate two is fixedly connected with the end of the piston rod of the material burying cylinder, and the pressing plate is fixedly connected with the angle plate two.

[0009] Preferably, the low-pressure injection molding fabric burying tool for automobile interior plastic parts further comprises a reversing connecting mechanism comprising a connecting frame, a servo motor one, a rotating shell seat, a servo motor two, a connecting flange and a connecting plate, the connecting frame is connected with the manipulator, the servo motor one is fixedly connected with the upper end of the connecting frame, a small synchronous pulley is arranged on the output shaft of the servo motor one, the rotating shell seat is rotatably connected with the lower end of the connecting frame, a large synchronous pulley is arranged on the output shaft of the rotating shell seat, the small synchronous pulley and the large synchronous pulley are connected through a synchronous belt, the servo motor two is fixedly connected with the rotating shell seat, the connecting flange is connected with the output shaft of the servo motor two, the connecting plate is fixedly connected with the connecting flange, and the connecting plate is fixedly connected with the aluminum alloy frame.

[0010] The beneficial effects of the above technical solutions are:

[0011] 1. The low-pressure injection molding fabric burying tool for automobile interior plastic parts is connected with the manipulator and the reversing connecting mechanism, horizontal clamping and secondary positioning of the low-pressure injection molding fabric are realized, the needle in the mold cavity is automatically buried, manual operation is saved, the process of manual fabric burying and manual start-stop of the injection molding machine is reduced, safety risks are avoided, labor costs are reduced, and production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic view of the low-pressure injection molding fabric burying tool for automobile interior plastic parts in a mold;

[0013] Figure 2 is a schematic view of the low-pressure injection molding fabric burying tool for automobile interior plastic parts in a working state;

[0014] Figure 3 is an assembly view of the low-pressure injection molding fabric burying tool for automobile interior plastic parts.

[0015] Figure 4 is a reversing connection mechanism structure schematic view;

[0016] Wherein:

[0017] 1, static die assembly; 2, tooling assembly; 3, dynamic die assembly; 4, reversing connection mechanism;

[0018] 2-1, grab embedded tooling;

[0019] 20, aluminum alloy frame;

[0020] 21, fabric grabbing mechanism; 21-1, first cylinder; 21-2, gusset one; 21-3, adjustable support one; 21-4, pneumatic needle clamp; 21-40, first needle clamp cylinder; 21-41, first needle; 21-42, second needle clamp cylinder; 21-43, second needle;

[0021] 22, fabric embedding mechanism; 22-1, embedding cylinder; 22-2, gusset two; 22-3, pressing plate;

[0022] 23, photoelectric sensor;

[0023] 30, needle hanging;

[0024] 40, connecting frame; 41, servo motor one; 41-1, small synchronous pulley; 42, rotating shell seat; 42-1, large synchronous pulley; 43, servo motor two; 44, connecting flange; 45, connecting plate. DETAILED DESCRIPTION

[0025] The specific embodiments of the utility model are further described in detail below by comparing the drawings and describing the embodiments, the purpose is to help the technical personnel in the field to have more complete, accurate and deep understanding of the concept, technical scheme of the utility model, and help its implementation.

[0026] As Figures 1 to 4 shown, the utility model discloses a low pressure injection molding fabric embedding tooling of automobile interior plastic parts, through the mechanical hand and reversing connection mechanism connection, realize the low pressure injection molding fabric horizontal clamping and secondary positioning and embed the needle of dynamic die assembly cavity, automation, saves the manual operation, reduces the process of manual embedding fabric, manual start-stop injection molding machine, avoids the security risk, reduces the artificial cost, improves the production efficiency.

[0027] Specifically, as Figures 1 to 4As shown, it comprises a static mold assembly 1, a tooling assembly 2 and a dynamic mold assembly 3, and the tooling assembly 2 is arranged between the static mold assembly 1 and the dynamic mold assembly 3; the tooling assembly 2 comprises an aluminum alloy frame 20 and a grabbing and embedding tool 2-1 for grabbing and embedding the fabric, which is connected to one side of the aluminum alloy frame 20; the grabbing and embedding tool 2-1 comprises a fabric grabbing mechanism 21, a fabric embedding mechanism 22 and a photoelectric sensor 23; the fabric grabbing mechanism 21 is provided with four fabric grabbing mechanisms for grabbing four corners of the fabric; the photoelectric sensor 23 is arranged inside the fabric grabbing mechanism 21 and is tightly connected with the aluminum alloy frame 20; the fabric embedding mechanism 22 is arranged in the middle of the square formed by the four fabric grabbing mechanisms 21.

[0028] The fabric grabbing mechanism 21 comprises a first cylinder 21-1, a corner plate 21-2, an adjustable support 21-3 and a pneumatic needle clamp 21-4, the cylinder body of the first cylinder 21-1 is tightly connected with the aluminum alloy frame 20, the corner plate 21-2 is tightly connected with the end of the piston rod of the first cylinder 21-1, the adjustable support 21-3 is tightly connected with the corner plate 21-2, and the pneumatic needle clamp 21-4 is tightly connected with the end of the adjustable support 21-3.

[0029] The pneumatic needle clamp 21-4 comprises a first needle clamp cylinder 21-40, a first needle 21-41, a second needle clamp cylinder 21-42 and a second needle 21-43, the first needle clamp cylinder 21-40 and the second needle clamp cylinder 21-42 are arranged in a figure-eight symmetry, the first needle 21-41 is driven to extend and retract by the first needle clamp cylinder 21-40, and the second needle 21-43 is driven to extend and retract by the second needle clamp cylinder 21-42.

[0030] The fabric embedding mechanism 22 comprises an embedding cylinder 22-1, a corner plate 22-2 and a pressing plate 22-3, the corner plate 22-2 is tightly connected with the end of the piston rod of the embedding cylinder 22-1, and the pressing plate 22-3 is tightly connected with the corner plate 22-2.

[0031] The utility model discloses a low pressure injection of interior trim plastic parts fabric burying frock, still includes reversing connecting mechanism 4 including connecting frame 40, servo motor no. 41, rotary shell seat 42, servo motor no. 43, connecting flange 44 and connecting plate 45, connecting frame 40 is connected with manipulator, servo motor no. 41 is tightly connected with connecting frame 40 upper end, and is equipped with small synchronous pulley on servo motor no. 41 output shaft, rotary shell seat 42 is rotatably connected with connecting frame 40 below, and is equipped with big synchronous pulley on rotary shell seat 42 output shaft, and small synchronous pulley and big synchronous pulley are connected through synchronous belt between, servo motor no. 43 is tightly connected with rotary shell seat 42, connecting flange 44 is connected with servo motor no. 43 output shaft, connecting plate 45 is tightly connected with connecting flange 44, and connecting plate 45 is tightly connected with aluminum alloy frame 20.

[0032] The following specific working mode is described with specific examples:

[0033] Example 1:

[0034] The low pressure injection of interior trim plastic parts fabric burying frock of the utility model, servo motor no. 41 in reversing connecting mechanism 4 is driven rotary shell seat 42, servo motor no. 43, connecting flange 44, connecting plate 45 with aluminum alloy frame 20 rotation to water product through small synchronous pulley 41-1, synchronous belt, big synchronous pulley 42-1, at this time, the buried frock 2-1 is grabbed downward, and the frock assembly 2 is moved to the fabric above by the manipulator, and the center hole of the pneumatic needle clamp 21-4 in the fabric grabbing mechanism 21 is overlapped with the positioning hole on the fabric.

[0035] Then, the pneumatic needle clamp 21-4 works, the first needle clamp cylinder 21-40 drives the first needle 21-41 to extend and pierce the fabric, the second needle clamp cylinder 21-42 drives the second needle 21-43 to extend and pierce the fabric, and the positioning and clamping of the fabric are realized. At this time, the photoelectric sensor 23 arranged beside each pneumatic needle clamp 21-4 detects whether the fabric clamping is successful.

[0036] After the fabric clamping is successful, the frock assembly 2 with the clamped fabric moves to the middle of the static mold assembly 1 and the dynamic mold assembly 3, and is positioned initially, at this time, the buried frock 2-1 is grabbed towards the dynamic mold assembly 3, as shown in the figure. Figure 1

[0037] Then, the first cylinder 21-1 extends, drives the pneumatic needle clamp 21-4 to extend, so that the pneumatic needle clamp 21-4 and the positioning hole on the fabric are concentrically overlapped with the needle hook 30 on the dynamic mold assembly 3, at this time, the left and right ends of the fabric are displaced to the middle by a specific distance. The extension stroke of the first cylinder 21-1 can be adjusted through the adjustable support no. 1 21-3.

[0038] ​Then, the fabric burying mechanism 22 in the fabric burying mechanism 22-1 is driven by the angle plate two 22-2 to drive the pressing plate 22-3 to eject, so that the fabric is in a certain arc under the action of the pressing plate 22-3, and the surface arc length of the fabric and the product outer surface arc length reach a certain ratio. The action of the fabric burying mechanism 22 is particularly important in the low-pressure injection molding process: due to the limitation of the product structure and the cross section of the cavity, if the fabric is directly buried in the mold in the flat state when clamped, the fabric is insufficient in the stretching rate under the fixing of the needle 30 and the pressure action after the mold is closed, and under the high-temperature molten glue and injection pressure (low pressure 50 Bar below), the fabric will appear problems such as rupture, penetration, overflow, color difference and wrinkle, and poor appearance and texture.

[0039] Then, the mechanical hand moves the whole clamped fabric tool assembly 2 to the movable mold assembly 3, so that the positioning hole on the fabric passes through the needle 30, and then the pneumatic needle clamp 21-4 works again, the first needle clamp cylinder 21-40 drives the first needle 21-41 to retract and release the fabric, and the second needle clamp cylinder 21-42 drives the second needle 21-43 to retract and release the fabric.

[0040] Then, the mechanical hand moves the whole tool assembly 2 from between the static mold assembly 1 and the movable mold assembly 3, and the product is taken out.

[0041] The low-pressure injection fabric burying tool for automobile interior plastic parts of the utility model is connected with the reversing connection mechanism 4 through the mechanical hand, realizes horizontal clamping and secondary positioning and burying of the low-pressure injection fabric into the needle 30 of the movable mold assembly 3 cavity, is automatic, saves manual operation, reduces the process of manual burying of the fabric and manual starting and stopping of the injection molding machine, avoids safety risks, reduces labor cost, and improves production efficiency.

[0042] Embodiment 2:

[0043] The low-pressure injection fabric burying tool for automobile interior plastic parts of the utility model is connected with the reversing connection mechanism 4 through the mechanical hand, realizes horizontal clamping and secondary positioning and burying of the low-pressure injection fabric into the needle 30 of the movable mold assembly 3 cavity, is automatic, saves manual operation, reduces the process of manual burying of the fabric and manual starting and stopping of the injection molding machine, avoids safety risks, reduces labor cost, and improves production efficiency.

[0044] The utility model is described exemplarily above in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model, or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, which are all within the protection scope of the utility model.

Claims

1. A tooling for embedding low-pressure injection molding fabric for automotive interior plastic parts, characterized in that: The assembly includes a static mold assembly (1), a tooling assembly (2), and a moving mold assembly (3), with the tooling assembly (2) positioned between the static mold assembly (1) and the moving mold assembly (3). The tooling assembly (2) includes an aluminum alloy frame (20) and a gripping and embedding tooling (2-1), which is connected to one side of the aluminum alloy frame (20). The gripping and embedding tooling (2-1) includes a fabric gripping mechanism (21), a fabric embedding mechanism (22), and a photoelectric sensor (23). There are four fabric gripping mechanisms (21) used to grip the four corners of the fabric. The photoelectric sensor (23) is located inside the fabric gripping mechanism (21) and is fastened to the aluminum alloy frame (20). The fabric embedding mechanism (22) is located in the middle of the square formed by the four fabric gripping mechanisms (21).

2. The low-pressure injection molding fabric embedding tooling for automotive interior plastic parts according to claim 1, characterized in that: The fabric gripping mechanism (21) includes a first cylinder (21-1), a first corner plate (21-2), a first adjustable bracket (21-3), and a pneumatic needle clamp (21-4). The cylinder body of the first cylinder (21-1) is fastened to the aluminum alloy frame (20). The first corner plate (21-2) is fastened to the piston rod end of the first cylinder (21-1). The first adjustable bracket (21-3) is fastened to the first corner plate (21-2) after its position is adjustable. The pneumatic needle clamp (21-4) is fastened to the end of the first adjustable bracket (21-3).

3. The low-pressure injection molding fabric embedding tooling for automotive interior plastic parts according to claim 2, characterized in that: The pneumatic needle clamp (21-4) includes a first needle clamp cylinder (21-40), a first needle (21-41), a second needle clamp cylinder (21-42), and a second needle (21-43). The first needle clamp cylinder (21-40) and the second needle clamp cylinder (21-42) are arranged symmetrically in a figure-eight pattern. The first needle (21-41) is driven to extend and retract by the first needle clamp cylinder (21-40), and the second needle (21-43) is driven to extend and retract by the second needle clamp cylinder (21-42).

4. The low-pressure injection molding fabric embedding tooling for automotive interior plastic parts according to claim 2, characterized in that: The fabric embedding mechanism (22) includes an embedding cylinder (22-1), a second corner plate (22-2), and a pressure plate (22-3). The second corner plate (22-2) is fastened to the piston rod end of the embedding cylinder (22-1), and the pressure plate (22-3) is fastened to the second corner plate (22-2).

5. The low-pressure injection molding fabric embedding tooling for automotive interior plastic parts according to claim 1, characterized in that: It also includes a reversing connection mechanism (4) comprising a connecting frame (40), a first servo motor (41), a rotating housing (42), a second servo motor (43), a connecting flange (44), and a connecting plate (45). The connecting frame (40) is connected to the robot arm. The first servo motor (41) is fastened to the upper end of the connecting frame (40), and a small synchronous pulley is provided on the output shaft of the first servo motor (41). The rotating housing (42) is rotatably connected to the lower part of the connecting frame (40), and a large synchronous pulley is provided on the output shaft of the rotating housing (42). The small synchronous pulley and the large synchronous pulley are connected by a synchronous belt. The second servo motor (43) is fastened to the rotating housing (42). The connecting flange (44) is connected to the output shaft of the second servo motor (43). The connecting plate (45) is fastened to the connecting flange (44), and the connecting plate (45) is fastened to the aluminum alloy frame (20).

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