A precision mould for forming a plastic product with special slider moulding terminal points

Abstract

The utility model relates to a precision mould for forming a plastic product with a special slider and terminal points, belongs to the thermoplastic plastic forming mould field, relates to a plastic mould for forming a plastic product with a special slider and embedded parts, and is mainly applied to the core parts of active bass and high-pitched loudspeakers of new energy vehicles. Through the application of the detachable slider structure, the terminal can be quickly and accurately installed, the VDI spark pattern is changed by the slider to change the material flow position, the FIP dispensing implementation process is smoothly carried out, and through the nano coating treatment on the slider insert, the terminal port position is smoothly demoulded, so that the product can be efficiently and stably produced.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of thermoplastic forming molds, and relates to a plastic mold for forming a product with an embedded part and dispensing glue by using a special slider, which is mainly applied to core parts of active bass and treble loudspeakers of new energy vehicles. BACKGROUND

[0002] With the popularization of new energy vehicles, consumers have higher and higher quality requirements for the sound source of the loudspeaker system in the vehicle. In order to achieve excellent surround sound and stereo sound, multiple loudspeakers with active sound need to be arranged on the vehicle to meet the requirements. A core part of the loudspeaker is a support, which serves to fix internal parts and cooperate with other external parts. In order to realize the lightweight requirement of the vehicle, most of the loudspeaker supports are plastic supports. The FIP dispensing process needs to be used on the support to ensure the sealing and shock resistance of the loudspeaker. Since the female terminal port needs to be arranged in the support and the terminal port is close to the FIP dispensing position, the terminal port position is generally formed by a slider. The fusion mark generated by the slider position will cause surface defects of the product, affect the adhesion of glue and the formed surface during FIP dispensing, and the glue is very easy to fall off. The size requirement of the female terminal port position is strict and cannot have a large demolding angle. The inner wall of the terminal port is very easy to be damaged during mold opening. How to realize stable production, improve production efficiency and meet mass production stability puts forward more technical requirements for the injection mold. SUMMARY

[0003] The application aims to provide a precision mold for forming a plastic product with a terminal and dispensing glue by using a special slider. The quick and accurate installation of the terminal is realized by applying a detachable slider structure. The material flow position is changed by applying VDI spark pattern to the slider. The FIP dispensing implementation process is smoothly carried out. Nano coating treatment is carried out on the slider insert to form a semi-permanent barrier of hardened polymer film on the surface. The friction coefficient of the resin can be reduced to ensure smooth demolding of the terminal port position and realize efficient and stable production of the product.

[0004] The application aims to provide a precision mold for forming a plastic product with a terminal and dispensing glue by using a special slider. The quick and accurate installation of the terminal is realized by applying a detachable slider structure. The material flow position is changed by applying VDI spark pattern to the slider. The FIP dispensing implementation process is smoothly carried out. Nano coating treatment is carried out on the slider insert to form a semi-permanent barrier of hardened polymer film on the surface. The friction coefficient of the resin can be reduced to ensure smooth demolding of the terminal port position and realize efficient and stable production of the product.

[0005] The technical scheme of the present application is: a precision mold for molding plastic products with special sliders and terminal points includes: a fixed mold plate 1, a movable mold plate 2, a fixed mold insert 3, a movable mold insert 4, a movable mold insert 5, a positioning insert group 6, a slider 7, a slider insert A 8, a slider insert B 9, a positioning pull rod 10, a drawing cap 11, a slider seat 12, a small pressing plate 13, a spring 14, a spring pin 15, a hook leg 16, a wedge 17, a slider pressing plate 18, a wear-resistant plate 19, a ball head top wire 20, a flat top rod 21, a plug-in insert 22, a terminal 23, and a plastic product 24. The connecting relationship is that the fixed mold insert 3 is in close contact with the fixed mold plate 1 and is fixed by bolt locking, the fixed mold insert 3 is provided with a slot for the drawing cap 11, the plug-in insert 22 is in close contact with the fixed mold insert 3 and is connected and limited by a hanging table, the positioning insert group 6 is in close contact with the movable mold insert 5 and is connected and limited by a hanging table, the movable mold insert 5 is in close contact with the movable mold insert 4 and is connected and limited by a hanging table, the movable mold insert 4 is in close contact with the movable mold plate 2 and is fixed by bolt locking; the slider insert B 9 and the slider insert A 8 are in surface contact, the slider insert A 8 and the slider insert B 9 are provided with pin holes, the positioning pull rod 10 is provided with a hanging table and a thread, the positioning pull rod 10 positions the slider insert A 8 and the slider insert B 9 through the pin holes, the hanging table provided on the positioning pull rod 10 is in surface contact with the slider insert B 9 and is limited, the drawing cap 11 is threadedly connected with the positioning pull rod 10 and is limited, the slider insert A 8 is provided with a two-way hanging table, the slider insert A 8 and the slider insert B 9 are in surface contact with the slider 7, are connected by a hanging table, and are limited, the slider 7 is connected with the slider seat 12 by a hanging table and is fixed by bolt locking, the spring pin 15 is in surface contact with the slider seat 12 and is slidingly matched, the spring 14 is gap matched with the slider seat 12, the small pressing plate 13 is in surface contact with the spring 14 and is limited, the small pressing plate 13 is in surface contact with the slider seat 12 and is fixed by bolt locking, the spring pin 15 is in surface contact with the hook leg 16, the hook leg 16 is in close contact with the fixed mold plate 1 and is fixed by bolt locking, the wedge 17 is in close contact with the fixed mold plate 1 and is fixed by bolt locking, the inclined surface provided on the wedge 17 is in surface contact with the inclined surface provided on the slider seat 12 and is limited, the slider pressing plate 18 is in surface contact with the slider seat 12 and is slidingly matched, the slider pressing plate 18 is in surface contact with the movable mold plate 2 and is fixed by bolt locking, the wear-resistant plate 19 is gap matched with the movable mold plate 2, the ball head top wire 20 is threadedly connected with the movable mold plate 2 and is positioned, the ball head top wire 20 is gap matched with the wear-resistant plate 19, and the flat top rod 21 is gap matched with the movable mold plate 2.The head of the counter-insert part 22 is provided with a counter-insert inclined surface, and the slider insert A8 is provided with a counter-insert inclined groove, the counter-insert inclined surface of the head of the counter-insert part 22 is in close contact with the counter-insert inclined groove of the slider insert A8; the hook leg 16 is provided with a guide groove, an upper wedge tight inclined surface, a lower wedge tight inclined surface and a sliding straight surface, the guide groove is in the shape of a straight groove at the upper part and an inclined groove at the lower part; the slider 7 is provided with a VDI21 spark pattern, the slider insert A8 and the slider insert B9 are provided with a nano coating on the surface, which is a non-toxic, colorless and hardened polymer film with a film thickness of 150 nanometers.

[0006] When the mold is opened, the fixed mold plate 1 drives the counter-insert part 22, the hook leg 16 and the inclined wedge 17 to move, the counter-insert part 22 is separated from the slider insert A8, the inclined wedge 17 is separated from the slider seat 12, the upper wedge tight inclined surface provided on the hook leg 16 is separated from the slider seat 12, the sliding straight surface provided on the hook leg 16 is in contact with the surface of the slider seat 12 and slides to make the slider 7 stationary, the elastic pin 15 is located in the straight groove part of the guide groove provided on the hook leg 16, when the counter-insert part 22 is completely separated from the slider insert A8, the inclined groove part of the guide groove provided on the hook leg 16 exerts pressure on the elastic pin 15, the elastic pin 15 drives the slider seat 12 to move for opening the mold, when the hook leg 16 is separated from the slider seat 12, the slider seat 12 stops moving and is limited by the ball head top wire 20; when the mold is closed, the hook leg 16 drives the elastic pin 15 to retreat, the spring 14 is compressed, the elastic pin 15 slides from the side of the hook leg 16, and when the elastic pin 15 enters the guide groove part provided on the hook leg 16, the elastic pin 15 is ejected and reset under the action of the spring 14; the slider 7 is provided with a square hole, after the slider 7 is opened, the flat top rod 21 passes through the square hole provided on the slider 7 to pre-eject the slider insert A8 and the slider insert B9, which is convenient for the operator to take out the slider insert A8 and the slider insert B9 combination.

[0007] The head of the positioning insert group 6 is provided with a circular table, when the slider insert A8 and the slider insert B9 installed with the terminal 23 are fitted on the slider 7, the circular hole provided on the terminal 23 is in contact with the circular table surface provided on the head of the positioning insert group 6 and is positioned.

[0008] The beneficial effects of the present application are: through the cooperation of the slider, the inclined wedge and the elastic pin and other components, the installation and positioning of the precision terminal in the production process of the vertical forming machine are realized, the installation speed and precision of the detachable special slider are ensured, through the VDI21 spark pattern provided on the slider, the position of the material flow welding mark is changed, the defect of poor glue sticking of the slider position due to the welding mark is solved, through the nano coating provided on the surface of the slider insert, the situation that the female terminal port is pulled and injured due to small demolding angle is solved, the production stability of the product is improved, the production efficiency is improved, and the mold opening damage of the terminal and the periphery of the female terminal port is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0009] The following will be specifically described with examples in combination with the drawings.

[0010] Figure 1 is a schematic diagram of the assembly of a precision mold for molding plastic products with special sliders forming terminal points Figure One .

[0011] Figure 2 is a schematic diagram of the assembly of a precision mold for molding plastic products with special sliders forming terminal points Figure Two .

[0012] Figure 3 is a schematic diagram of the mold opening of a precision mold for molding plastic products with special sliders forming terminal points Figure Three .

[0013] Figure 4 is a schematic diagram of the positioning of inserts of a precision mold for molding plastic products with special sliders forming terminal points Figure Four .

[0014] Figure 5 is a schematic diagram of the positioning of inserts of a precision mold for molding plastic products with special sliders forming terminal points Figure Five .

[0015] Figure 6 is a schematic diagram of the internal section of a slider of a precision mold for molding plastic products with special sliders forming terminal points Figure Six .

[0016] Figure 7 is a schematic diagram of the internal section of a slider of a precision mold for molding plastic products with special sliders forming terminal points Figure Seven .

[0017] Figure 8 is a schematic diagram of the assembly of the moving mold part of a precision mold for molding plastic products with special sliders forming terminal points Figure Eight .

[0018] Figure 9 is a schematic diagram of the plastic product insert part of a precision mold for molding plastic products with special sliders forming terminal points Figure Nine .

[0019] Figure 10 is a schematic diagram of the plastic product insert part of a precision mold for molding plastic products with special sliders forming terminal points Figure Ten .

[0020] In the diagram: 1 Fixed mold plate; 2 Moving mold plate; 3 Fixed mold insert; 4 Moving mold insert; 5 Moving mold insert; 6 Positioning insert assembly; 7 Slider; 8 Slider insert A; 9 Slider insert B; 10 Positioning pull rod; 11 Pull cap; 12 Slider seat; 13 Small pressure plate; 14 Spring; 15 Spring pin; 16 Hook leg; 17 Wedge; 18 Slider pressure plate; 19 Wear-resistant plate; 20 Ball head set screw; 21 Flat set rod; 22 Interlocking insert; 23 Terminal; 24 Plastic product. Detailed Implementation

[0021] The specific embodiments of the invention are described in detail below with reference to the technical text and accompanying drawings.

[0022] During mold assembly, insert 22 is fitted into the cavity machined by fixed mold insert 3. Fixed mold insert 3, hook leg 16, and wedge 17 are respectively fitted into the cavity machined by fixed mold plate 1 and fixed with bolts. Positioning insert assembly 6 is fitted into the cavity machined by moving mold insert 5. Moving mold insert 5 and positioning insert assembly 6 are fitted as a whole into the cavity machined by moving mold plate 2 and fixed with bolts. Slider insert A8 is fitted with slider insert B9. Positioning pull rod 10 passes through slider insert B9 and slider insert A8 to limit their movement. Pull cap 11 is screwed onto the threaded part of the head of positioning pull rod 10 and onto the slider insert. B9 and slider insert A8 are positioned. Slider insert A8 and slider insert B9 are assembled as a whole and fitted into the pre-machined cavity of slider 7, limited by the mounting plate. Slider insert A8, slider insert B9, and slider 7 are assembled as a whole and fitted into slider seat 12. Bolts pass through slider seat 12 to lock and fix it to slider 7. Spring pin 15 is fitted into the pre-machined slot of slider seat 12 and limited by the mounting plate. Spring 14 is fitted into the pre-machined cavity of slider seat 12. Small pressure plate 13 is fitted into the pre-machined cavity of slider seat 12. Bolts pass through small pressure plate 13 to lock and fix it to slider seat 12 (see...). Figure 6 , 7 The ball head set screw 20 and wear-resistant plate 19 are fitted into the cavity machined in the moving template 2. The slider 7 and slider seat 12 are fitted into the cavity machined in the moving template 2 as a whole. The slider pressure plate 18 is fitted on both sides of the slider seat 12. Bolts pass through the slider pressure plate 18 to lock and fix it to the moving template 2 (see...). Figure 1 , 2 ).

[0023] The insert installation process is as follows: Terminal 23 is provided on the plastic product 24 (see...) Figure 9 , 10 On the vertical molding machine, after injection molding, the wedge 17 drives the slide block 12 to slide. After the slide block stroke is reached, the ball head ejector screw 20 limits the slide block 12, and the product is ejected. At the same time, the flat ejector rod 21 pushes the slide block insert A8 and slide block insert B9 a certain distance, so that the slide block insert A8 and slide block insert B9 are disengaged from the slide block 7 (see...). Figure 3The operator holds the pull cap 11 and removes the slider insert A8 and slider insert B9 as a whole. The operator manually pushes the slider seat 12 back and resets it, which is limited by the ball head set screw 20. The terminal 23 is fitted into the terminal slot machined in the slider insert B9. The operator then fits the slider insert A8, slider insert B9 and terminal 23 as a whole onto the slider 7 (see...). Figure 5 , 6 During installation, terminal 23 is fitted and precisely positioned with the frustum on positioning insert assembly 6 (see...). Figure 4 , 8 When the molding machine closes the mold, the hook leg 16 and the wedge 17 cooperate with the inclined surface of the slider seat 12 and limit it, and the fixed mold insert 3 contacts the surface of the slider insert A8 and limits it.

[0024] Injection molding process: When the resin enters the cavity and reaches the position of slider 7, the position of the weld line formed by the convergence of material flows is artificially changed due to the roughness of the VDI surface spark pattern. By adjusting the surface spark patterns of different VDI models multiple times, VDI21 spark pattern is selected to meet the requirement of FIP adhesive not falling off. When the resin passes through the positions of slider insert A8 and slider insert B9, the nano-coating hardened polymer film on the surface forms a semi-permanent barrier, which can reduce the friction coefficient of the resin. The coating polymer film will not transfer to the product surface during the production process. After injection molding and cooling, the product is successfully demolded.

[0025] The above description represents the superior embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A precision mold for molding plastic products with special slider shaped terminal points by dispensing plastic, characterized in that The structure comprises: a fixed mold plate (1), a movable mold plate (2), a fixed mold insert (3), a movable mold insert (4), a movable mold insert (5), a positioning insert set (6), a slider (7), a slider insert A (8), a slider insert B (9), a positioning pull rod (10), a drawing cap (11), a slider seat (12), a small pressing plate (13), a spring (14), a spring pin (15), a hook leg (16), a wedge (17), a slider pressing plate (18), a wear-resistant plate (19), a ball head jack (20), a flat top rod (21), a plug-in insert (22), a terminal (23), and a plastic product (24). The connecting relationship is that the fixed mold insert (3) is provided with a gap for the drawing cap (11), the plug-in insert (22) is in close contact with the fixed mold insert (3) and is connected and limited by a hanging table, the positioning insert set (6) is in close contact with the movable mold insert (5) and is connected and limited by a hanging table, the movable mold insert (5) is in close contact with the movable mold insert (4) and is connected and limited by a hanging table, the slider insert B (9) and the slider insert A (8) are in surface contact, the slider insert A (8) and the slider insert B (9) are provided with pin holes, the positioning pull rod (10) is provided with a hanging table and a thread, the positioning pull rod (10) positions the slider insert A (8) and the slider insert B (9) through the pin holes, the hanging table provided on the positioning pull rod (10) is in surface contact with the slider insert B (9) and is limited, the drawing cap (11) is threadedly connected with the positioning pull rod (10) and is limited, the slider insert A (8) is provided with a two-way hanging table, the slider insert A (8) and the slider insert B (9) are in surface contact with the slider (7), are connected by a hanging table, and are limited, the slider (7) is connected with the slider seat (12) by a hanging table and is fixed by a bolt, the spring pin (15) is in surface contact with the slider seat (12) and is slidingly matched, the spring (14) is clearance matched with the slider seat (12), the small pressing plate (13) is in surface contact with the spring (14) and is limited, the small pressing plate (13) is in surface contact with the slider seat (12) and is fixed by a bolt, the spring pin (15) is in surface contact with the hook leg (16), the inclined surface provided on the wedge (17) is in surface contact with the inclined surface provided on the slider seat (12) and is limited, the slider pressing plate (18) is in surface contact with the slider seat (12) and is slidingly matched, the ball head jack (20) is in surface contact with the movable mold plate (2) and is threadedly connected and positioned, the ball head jack (20) is clearance matched with the wear-resistant plate (19), and the flat top rod (21) is clearance matched with the movable mold plate (2). The fitting surface of the slider insert A (8) and the slider (7) is provided with an inclined surface, the fitting surface of the slider insert B (9) and the slider (7) is provided with an inclined surface, the drawing cap (11) is used by an operator to take out the slider insert A (8), the slider insert B (9), the positioning pull rod (10), and the drawing cap (11) as a whole from the mold cavity after the slider (7) is opened, and the operator assembles the terminal (23) in the slider insert B (9).The head of the counter-insert part (22) is provided with a counter-insert inclined surface, the slider insert A (8) is provided with a counter-insert inclined groove, and the counter-insert inclined surface provided on the head of the counter-insert part (22) is in close contact with the counter-insert inclined groove provided on the slider insert A (8) in the closed mold state; the hook leg (16) is provided with a guide groove, an upper wedge tight inclined surface, a lower wedge tight inclined surface and a sliding straight surface, the guide groove is in the shape of a straight groove at the upper part and an inclined groove at the lower part; the slider (7) is provided with a VDI21 spark pattern, the surfaces of the slider insert A (8) and the slider insert B (9) are provided with a nano coating, which is a non-toxic, colorless hardened polymer film with a film thickness of 150 nanometers.

2. The precision mold for forming the plastic product with the special slider to glue the terminal points of the molding belt according to claim 1, wherein: When the mold is opened, the fixed mold plate (1) drives the pair of insert parts (22), the hook leg (16) and the inclined wedge (17) to move, the pair of insert parts (22) is separated from the slider insert part A (8), the inclined wedge (17) is separated from the slider seat (12), the upper wedge inclined surface provided on the hook leg (16) is separated from the slider seat (12), the sliding straight surface provided on the hook leg (16) is in surface contact with the slider seat (12) and slides to make the slider (7) stationary, the elastic pin (15) is located in the straight groove part of the guide groove provided on the hook leg (16), when the pair of insert parts (22) is completely separated from the slider insert part A (8), the inclined groove part of the guide groove provided on the hook leg (16) exerts pressure on the elastic pin (15), the elastic pin (15) drives the slider seat (12) to move for opening the mold, when the hook leg (16) is separated from the slider seat (12), the slider seat (12) stops moving and is limited by the ball head top wire (20); when the mold is closed, the hook leg (16) drives the elastic pin (15) to retreat, the spring (14) is compressed, the elastic pin (15) slides from the side of the hook leg (16), when the elastic pin (15) enters the guide groove part provided on the hook leg (16), the elastic pin (15) is ejected and reset under the action of the spring (14); the slider (7) is provided with a square hole, after the slider (7) is opened, the flat top rod (21) passes through the square hole provided on the slider (7) to pre-eject the slider insert part A (8) and the slider insert part B (9).

3. The precision mold for forming a plastic product with special slider molded terminal points by dispensing plastic according to claim 1, wherein: The head of the positioning insert group (6) is provided with a circular table, when the slider insert part A (8) and the slider insert part B (9) provided with the terminal (23) are fitted on the slider (7), the circular hole provided on the terminal (23) is in surface contact with the circular table provided on the head of the positioning insert group (6) and is positioned.

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