CN116985344A - A mould for processing plastic spring - Google Patents

Abstract

The utility model discloses a die for processing a plastic spring, which comprises a fixed die plate and a movable die plate, wherein a fixed die insert, a sliding block insert and a movable die insert are sequentially embedded between the fixed die plate and the movable die plate, the sliding block insert is used for connecting and fixing the sliding block insert and the movable die insert, and the sliding block insert consists of two or more sliding blocks. The mold for processing the plastic springs disclosed by the utility model has the advantages that the sliding block inserts are formed by the sliding blocks to form the fixed mold inserts and the fixed mold inserts, the structure is simple, the disassembly is convenient, the adjustment precision is high, the durability is high, the requirement on the injection molding process is low, and the mold can be widely used for processing various plastic springs.

Description

A mold for processing plastic springs

Technical field

The invention belongs to the technical field of molds, and is specifically a mold used for processing plastic springs.

Background technique

Plastic springs are generally made by injection molding, and the mold is an important production tool during the production process. The Chinese utility model patent with authorization announcement number CN217653124U discloses a plastic spring for packaging containers. When making the above-mentioned patented product, the applicant found that the slider insert of the existing mold wore out quickly, and one part of the wear had to be replaced as a whole. The cost was high, and it was inconvenient to disassemble and adjust the accuracy.

Contents of the invention

The technical problem to be solved by the present invention is to provide a mold for processing plastic springs, which has high durability, convenient disassembly and assembly, high processing accuracy, and low cost.

In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

A mold for processing plastic springs, including a fixed mold plate and a movable mold plate. Fixed mold inserts, slider inserts and movable mold inserts are sequentially embedded between the fixed platen plate and the movable mold plate. The slider insert is used For connecting and fixing the slider insert and the movable mold insert, the slider insert is composed of two or more sliders.

Further, each of the sliders is the same slider.

Further, a wedge block is provided around the slider insert, and the wedge block is used to lock the slider insert.

Further, the mold for processing plastic springs also includes an inclined guide post. During the process of assembling and disassembling the mold for processing plastic springs, the slider slides along the inclined guide post.

Further, a fixed mold groove is formed on the top of the slider insert, and the fixed mold insert is inserted into the fixed mold groove.

Further, a movable mold slot is formed at the bottom of the slider insert, and the movable mold insert is inserted into the movable mold slot.

Further, the movable mold insert is composed of two or more movable mold insert components.

Furthermore, the number of the movable mold insert components is the same as the number of slide blocks.

Furthermore, the mold for processing plastic springs also includes a movable mold plate, which is used to fix the movable mold insert.

Furthermore, the mold for processing plastic springs also includes a panel, a nozzle push plate and a drawing pin. The drawing pin passes from the panel to the nozzle push plate.

The invention discloses a mold for processing plastic springs. The slider insert is composed of a plurality of sliders to form a fixed mold insert and a fixed mold insert. It has a simple structure, is easy to disassemble, has high adjustment accuracy and high durability. It has low requirements on the injection molding process and can be widely used in the processing of various plastic springs.

Description of drawings

Figure 1 is a top view of a mold used for processing plastic springs according to Embodiment 1 of the present invention;

Figure 2 is a cross-sectional view along line A-A of Figure 1;

Figure 3 is a bottom view of a mold used for processing plastic springs according to Embodiment 1 of the present invention;

Figure 4 is a cross-sectional view along the B-B plane of Figure 3;

Figure 5 is a schematic diagram of the mold opening sequence and ejection sequence for processing plastic springs according to Embodiment 1 of the present invention;

Figure 6 is a top view of a mold used for processing plastic springs according to Embodiment 2 of the present invention;

Figure 7 is a C-C plane cross-sectional view of Figure 6;

Figure 8 is a bottom view of a mold used for processing plastic springs according to Embodiment 2 of the present invention;

Figure 9 is a cross-sectional view of the D-D plane in Figure 8;

Figure 10 is a schematic diagram of the mold opening sequence and ejection sequence for processing plastic springs in Embodiment 2 of the present invention.

Implementation

A mold for processing plastic springs proposed by the present invention will be described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left side", "right side", "upper part", "lower part", "bottom", etc. is based on the orientation or position shown in the drawings. The positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and "first", "second", etc. It does not indicate the importance of the components and therefore cannot be construed as a limitation of the invention. The specific dimensions and numerical values used in this embodiment are only for illustrating the technical solution and do not limit the scope of the present invention. In the following embodiments, the door lock of the present invention is used in a washing machine as an example. However, it should be noted that the door lock of the present invention is not limited to use in a washing machine.

Embodiment 1

As shown in Figures 1 to 4, the present invention discloses a mold for processing plastic springs, including a panel 101 (also called a "fixed mold bottom plate"), a nozzle push plate 102, and a fixed template 103 arranged in sequence from top to bottom. (also called "front formwork", "A plate"), movable formwork 104 (also called "rear formwork", "B plate"), first movable formwork supporting plate 105, square iron 106 (also called "C plate") , surface needle plate 107, bottom needle plate 108, second movable mold supporting plate 109 and bottom plate 110.

As shown in FIG. 2 , the panel 101 and the base plate 110 are connected through side pull plates 124 . A sprue sleeve 112 is provided between the panel 101 and the nozzle push plate 102, and the sprue sleeve 112 is positioned and fixed using a positioning ring 111. A drawing pin 113 is also provided between the panel 101 and the nozzle push plate 102, and the drawing pin 113 plays a drawing role. A stripper plate 114 and a flow channel plate 115 are provided between the nozzle push plate 102 and the fixed template 103. The stripper plate 114 is used for stripping materials, and the flow channel plate 115 is the position where the flow channel is formed. The sprue sleeve 112 passes through the stripper plate 114 to the flow channel plate 115, and the feed material enters the mold cavity through the sprue sleeve 112 and the flow channel plate 115. The mold cavity is composed of a fixed mold insert 116 and a movable mold insert 121. In this embodiment, the movable mold insert 121 is a movable circular mold insert. The movable mold insert 121 is embedded in the movable mold plate 104 through the movable mold panel 119 to fix the movable mold insert 121 .

As shown in FIG. 2 , the fixed mold insert 116 and the movable mold insert 121 are connected and fixed by the slider insert 117 . In this embodiment, the slider insert 117 is composed of three identical sliders. Of course, the number of sliders can also be other. The sliders can be the same or have different sizes and shapes. If the slider is worn, it can be replaced individually. The fixed mold insert 116 and the movable mold insert 121 can also be composed of more than two fixed mold insert components and movable mold insert components. Generally, the number of fixed mold insert components and movable mold insert components is the same as the number of sliders. . In this embodiment, both the fixed mold insert 116 and the movable mold insert 121 are an integral component. After the fixed mold insert 116 and the movable mold insert 121 are placed, push each slide block, and finally fix the fixed mold insert 116 and the movable mold insert 121. By adjusting the sliders, the fixed mold insert 116 and the movable mold can be adjusted. The accuracy of the cavity formed by the insert 121. Wedge blocks 118 are provided around the slider insert 117, and the wedge blocks 118 lock each slider.

As shown in Figure 2, a mold for processing plastic springs in this embodiment also includes an inclined guide post 120. The inclined guide post 120 is arranged between the fixed platen plate 103 and the movable platen plate 104. During the assembly and disassembly of the mold, the sliding The block moves in the direction of the inclined guide post 120 .

As shown in Figure 2, a mold for processing plastic springs in this embodiment also includes a cylinder 122, a first guide post 125 (ie, SP guide post), and a second guide post 126 (ie, GP guide post). The cylinder 122 passes from the mold cavity to the base plate 110, and a cylinder needle 123 is installed in the cylinder 122, which serves as a molding glue position and plays an ejection role. The first guide pillar 125 passes through the panel 101, the nozzle push plate 102, the fixed mold plate 103, the movable mold plate 104 and the first movable mold supporting plate 105 in sequence, and reaches the square iron 106 to play a positioning and guiding role. The second guide pillar 126 passes through the fixed mold plate 103, the movable mold plate 104 and the first movable mold supporting plate 105 in sequence to play a positioning and guiding role.

As shown in Figures 3 and 4, a mold for processing plastic springs in this embodiment also includes a return pin 127, a pull rod 128, a forced return mechanism 129, a switch 130, a buckle 131, an oil cylinder 132 and a support column 133 . The back pin 127 is used for ejection and reset, the pull rod 128 is used for template opening and limiting, the forced reset mechanism 129 is used for template and accessories reset, the shutter 130 and the buckle 131 are used for The oil cylinder 132 controls the opening and closing of the formwork. The oil cylinder 132 provides power for ejection and reset. The support column 133 is used to prevent the oil cylinder from being damaged due to contact with the bottom surface when the formwork is placed on the bottom surface.

As shown in Figure 5, a mold for processing plastic springs in this embodiment, the mold opening sequence and ejection sequence are as follows:

Step 1) The mold is opened according to the normal mold opening sequence from P/L1 to P/L3;

Step 2) Cylinder P/L4 delays ejection at a slow speed for 1 second;

Step 3) The top plate P/L5 is ejected slowly with a delay of 1S;

Step 4) Use a robot to take out the material head;

Step 5) Confirm that the cylinder returns;

Step 6) Use the return needle spring and forced return mechanism to ensure that the top plate returns;

Step 7) Use an in-mold detector to confirm that there are no product or other residues in the mold;

Step 8) Close the mold and start the second mold action cycle.

Embodiment 2

As shown in Figures 6 to 9, the present invention discloses a mold for processing plastic springs, including a panel 201, a nozzle push plate 202, a fixed template 203, a movable template 204, and a first movable mold arranged in sequence from top to bottom. Supporting plate 205, square iron 206, surface needle plate 207, bottom needle plate 208, second movable mold supporting plate 209 and bottom plate 210.

As shown in FIG. 7 , the panel 201 and the base plate 210 are connected through side pull plates 224 . A sprue sleeve 212 is provided between the panel 201 and the nozzle push plate 202, and the sprue sleeve 212 is positioned and fixed using a positioning ring 211. A stripper plate 214 and a flow channel plate 215 are provided between the nozzle push plate 202 and the fixed template 203. The stripper plate 214 is used for stripping materials, and the flow channel plate 215 is the position where the flow channel is formed. The sprue sleeve 212 passes through the stripper plate 214 to the flow channel plate 215, and the feed material enters the mold cavity through the sprue sleeve 212 and the flow channel plate 215. The mold cavity is composed of a fixed mold insert 216 and a movable mold insert 221. The movable mold insert 221 is embedded in the movable mold plate 204 through the movable mold panel 219 to fix the movable mold insert 221 .

As shown in FIG. 7 , the fixed mold insert 216 and the movable mold insert 221 are connected and fixed by the slider insert 217 . In this embodiment, the slider insert 217 is composed of four identical sliders. If the slider is worn, it can be replaced individually. The fixed mold insert 216 and the movable mold insert 221 can also be composed of more than two fixed mold insert components and movable mold insert components. Generally, the number of fixed mold insert components and movable mold insert components is the same as the number of sliders. . After placing the fixed mold insert 216 and the movable mold insert 221, push each slide block, and finally fix the fixed mold insert 216 and the movable mold insert 221. By adjusting the sliders, the fixed mold insert 216 and the movable mold insert can be adjusted. The accuracy of the cavity formed by the insert 221. A wedge block 218 is provided around the slider insert 217, and the wedge block 218 locks each slide block.

As shown in Figure 7, a mold for processing plastic springs in this embodiment also includes a cylinder 222, a first guide post 225 (ie, SP guide post), and a second guide post 226 (ie, GP guide post). The cylinder 222 passes from the mold cavity to the bottom plate 210, and a cylinder needle 223 is installed in the cylinder 222, which serves as a molding glue position and plays an ejection role. The first guide pillar 2125 passes through the panel 201, the nozzle push plate 202, the fixed mold plate 203, the movable mold plate 204 and the first movable mold supporting plate 205 in sequence, and reaches the square iron 206 to play a positioning and guiding role. The second guide pillar 226 passes through the fixed mold plate 203, the movable mold plate 204 and the first movable mold supporting plate 205 in sequence to play a positioning and guiding role.

As shown in Figures 8 and 9, a mold for processing plastic springs in this embodiment also includes a return pin 227, a pull rod 228, a forced return mechanism 229, a switch 230, a buckle 231, an oil cylinder 232 and a support column 233 . The back pin 227 is used for ejection and reset, the pull rod 228 is used for template opening and limiting, the forced reset mechanism 229 is used for template and accessories reset, and the shutter 230 and buckle 231 are used for The oil cylinder 232 controls the opening and closing of the formwork. The oil cylinder 232 provides power for ejection and reset. The support column 233 is used to prevent the oil cylinder from being damaged due to contact with the bottom surface when the formwork is placed on the bottom surface.

As shown in Figure 10, for a mold used to process plastic springs in this embodiment, the mold opening sequence and ejection sequence are as follows:

Step 1) The mold is opened according to the normal mold opening sequence from P/L1 to P/L3;

Step 2) Cylinder P/L4 delays ejection at a slow speed for 1 second;

Step 3) The top plate P/L5 is ejected slowly with a delay of 1S;

Step 4) Use a robot to take out the material head;

Step 5) Confirm that the cylinder returns;

Step 6) Use the return needle spring and forced return mechanism to ensure that the top plate returns;

Step 7) Use an in-mold detector to confirm that there are no product or other residues in the mold;

Step 8) Close the mold and start the second mold action cycle.

It should be noted that the mold disclosed in the present invention for processing plastic springs does not limit the internal shape of the cavity, and is therefore not limited to processing the plastic springs disclosed in the Chinese utility model patent with authorization announcement number CN217653124U. It is possible to set up cavities with different internal shapes and process plastic springs with different shapes.

Based on the description of the preferred embodiments of the invention, it should be understood that the invention as defined by the appended claims is not limited only to the specific details set forth in the above specification, and that many modifications of the invention may be made without departing from the spirit or scope of the invention. Obvious changes may be made to achieve the objectives of the invention.

Claims (10)

1. A mold for processing plastic springs, including a fixed mold plate and a movable mold plate, characterized in that fixed mold inserts, slider inserts and movable mold inserts are sequentially embedded between the fixed mold plate and the movable mold plate. The slider insert is used to connect and fix the slider insert and the movable mold insert, and the slider insert is composed of two or more sliders. 2. The mold for processing plastic springs according to claim 1, characterized in that each of the slide blocks is the same slide block. 3. The mold for processing plastic springs according to claim 1, characterized in that a wedge block is provided around the slider insert, and the wedge block is used to lock the slider insert. 4. The mold for processing plastic springs according to claim 1, characterized in that the mold for processing plastic springs further includes an inclined guide post, during the process of assembling and disassembling the mold for processing plastic springs. , the slider slides along the inclined guide post. 5. The mold for processing plastic springs according to claim 1, characterized in that a fixed mold groove is formed on the top of the slider insert, and the fixed mold insert is inserted into the fixed mold groove. 6. The mold for processing plastic springs according to claim 1, characterized in that a movable mold groove is formed at the bottom of the slider insert, and the movable mold insert is inserted into the movable mold groove. 7. The mold for processing plastic springs according to claim 1, characterized in that the movable mold insert is composed of two or more movable mold insert components. 8. The mold for processing plastic springs according to claim 1, characterized in that the number of the movable mold insert components is the same as the number of slide blocks. 9. The mold for processing plastic springs according to claim 1, characterized in that the mold for processing plastic springs further includes a movable template, and the movable template is used to fix the movable mold insert. 10. The mold for processing plastic springs according to claim 1, characterized in that the mold for processing plastic springs further includes a panel, a nozzle push plate and a drawing pin, and the drawing pin is from The panel passes through the nozzle push plate.