Flexible glue forming die

Abstract

The utility model relates to a soft rubber forming die. The soft rubber forming die comprises a lower die, an upper die and a die core arranged in the lower die and the upper die, the mold core is provided with a lower mold core and an upper mold core which are respectively mounted in the lower mold and the upper mold; the lower mold core and the upper mold core are respectively sunken inwards from opposite surfaces to form a first forming cavity and a second forming cavity; when the first forming cavity and the second forming cavity move relatively and are in butt joint, an area with a small gap is formed. The mold core is further provided with a through hole communicated with the outside, the through hole is formed in the area with the small gap, and a breathable part is installed in the through hole, is made of a breathable and non-glue-permeable material and is used for exhausting when glue is injected into the first forming cavity and the second forming cavity; the lower mold core and the upper mold core are in butt joint to form the sealed cavity, the flexible glue is injected into the cavity for forming, then the through hole is formed in the weak position of the flexible glue, the ventilation piece is installed in the through hole, the sealed cavity can exhaust air through the ventilation piece, glue can flow smoothly, the situation of glue shortage is avoided, and the yield is increased.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, and in particular to a soft rubber molding die. Background Art

[0002] Plastic products are widely used in many industries, ranging from home appliances to automotive parts. Injection molding is a plastic manufacturing process that involves melting plastic polymers in a short period of time to make plastic parts. The technology solidifies the molten plastic resin under pressure in a pre-processed mold to give the parts shape. It is estimated that a general car is assembled from more than 10,000 non-disassembled independent parts, most of which are made of plastic, and some of them need to be manufactured by a combination of hard and soft glue, such as speakers, speakers, etc.

[0003] When combining soft-glue products with hard-glue products, the molded hard-glue products need to be placed in the mold, and then the soft-glue is injected. After cooling, the soft-glue fits tightly with the hard-glue products. When the soft-glue is formed and the glue position is thin, quick injection is required. However, the bottom of the glue position of the original mold is too tightly closed, resulting in the inability to discharge hot air in time during injection molding, forming pressure, and the glue cannot flow to the predetermined position, resulting in glue shortage in the product.

[0004] Therefore, it is necessary to develop a soft plastic molding mold to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a soft rubber forming mold which can avoid lack of rubber and has a high yield rate.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a soft rubber molding mold, comprising:

[0007] A lower mold and an upper mold, and mold cores installed in the lower mold and the upper mold;

[0008] The mold core comprises a lower mold core and an upper mold core respectively installed in the lower mold and the upper mold, wherein the lower mold core and the upper mold core are respectively recessed inward from opposite sides to form a first molding cavity and a second molding cavity; when the first molding cavity and the second molding cavity move relative to each other and dock, an area with a small gap is formed;

[0009] The mold core also has a through hole connected to the outside. The through hole is opened in the area with smaller gap. A breathable part is installed inside the through hole. The breathable part is made of breathable and non-glue-permeable material and is used for exhausting when injecting glue into the first molding cavity and the second molding cavity.

[0010] Furthermore, the first molding cavity through hole has an outer cavity and an inner cavity, and both the outer cavity and the inner cavity are formed by being recessed inward from the upper surface of the lower mold core. The outer cavity is used to fix the hard plastic product, and the inner cavity is used to mold the soft plastic product.

[0011] Furthermore, a separation protrusion is provided between the outer cavity and the inner cavity, and the separation protrusion separates the outer cavity and the inner cavity.

[0012] Furthermore, the bottom of the inner cavity has an opening.

[0013] Furthermore, the lower mold core includes a first through cavity, which is formed by being recessed inward from the lower surface of the lower mold core and is connected with the inner cavity through the opening.

[0014] Furthermore, the lower mold core includes a bottom molding module, which is installed in the first through cavity. The bottom molding module extends into the first through cavity, and the shape of its top changes according to demand. When the bottom molding module extends into the first through cavity, its top extends into the opening to form a molding cavity with the inner cavity.

[0015] Furthermore, the upper mold core has a second through cavity, which is formed by being recessed inward from the lower surface of the upper mold core and is communicated with the second molding cavity.

[0016] Furthermore, the upper mold core also includes a top molding module, which is installed in the second through cavity. The top molding module extends into the second molding cavity through the second through cavity, and the shape of its bottom changes according to demand. The top molding module moves synchronously with the upper mold core.

[0017] Furthermore, a flow channel is provided in the top molding module, and soft glue is injected into the inner cavity and the second molding cavity through the flow channel.

[0018] Compared with the prior art, the beneficial effect of the utility model is that the utility model is a soft rubber molding mold, which has the characteristics of avoiding glue shortage and high yield rate. A relatively sealed cavity is formed by connecting the lower mold core and the upper mold core, and the soft rubber is injected into the cavity for molding. Then a through hole is opened at the weak point of the soft rubber, and a breathable part is installed in the through hole. The sealed cavity can be vented through the breathable part, and the colloid can flow smoothly, avoiding the situation of glue shortage and improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a soft rubber molding mold of the utility model;

[0021] Figure 2 for Figure 1 The schematic diagram of the explosion structure of the lower mold of the soft rubber molding mold shown;

[0022] Figure 3 for Figure 1 The schematic diagram of the partial upper mold structure of the soft rubber molding mold shown;

[0023] Figure 4 for Figure 1 The schematic diagram of the mold core explosion structure of the soft rubber molding mold shown;

[0024] Figure 5 for Figure 4 The schematic diagram of the local structure of the lower mold core of the soft rubber molding mold shown;

[0025] Figure 6 for Figure 1 Schematic diagram of the exploded structure of the upper mold core and positioning components of the soft rubber molding mold shown.

[0026] In the figure: 1, lower mold; 2, upper mold; 3, mold core; 4, positioning assembly; 11, fixing block; 12, mounting block; 13, support plate; 14, ejector assembly; 111, bottom plate; 112, vertical plate; 131, receiving groove; 121, first mounting cavity; 122, step; 141, moving plate; 142, ejector rod; 15, guide member; 16, elastic member; 21, top plate; 22, docking block; 211, fixing groove; 221, second mounting cavity ; 23. Injection port; 31. Lower mold core; 32. Upper mold core; 311. First molding cavity; 312. First through cavity; 313. Outer cavity; 314. Inner cavity; 315. Partitioning protrusion; 316. Through hole; 317. Breathable part; 318. Opening; 321. Second molding cavity; 322. Second through cavity; 33. Bottom molding module; 34. Top molding module; 341. Runner; 41. Driving member; 42. Slider; 43. Connecting rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Please see Figures 1 to 6 The utility model is a soft rubber molding mold, which includes a lower mold 1, an upper mold 2 connected to the lower mold 1, a mold core 3 installed in the lower mold 1 and the upper mold 2, and a positioning component 4 arranged on one side of the lower mold 1 and the upper mold 2.

[0029] Please see Figure 1 to Figure 2 The lower mold 1 includes a fixed block 11, a mounting block 12 located above the fixed block 11, a support plate 13 and an ejection assembly 14 arranged between the fixed block 11 and the mounting block 12. The fixed block 11 includes a bottom plate 111 and a pair of vertical plates 112 installed on the bottom plate 111. The pair of vertical plates 112 are respectively located on both sides of the upper surface of the bottom plate 111, and the bottoms thereof are fixedly connected to the bottom plate 111, and the tops thereof extend vertically upward. A hollow area is formed between the pair of vertical plates 112, and the ejection assembly 14 is installed in the hollow area. The support plate 13 is arranged between the vertical plates 112 and the mounting block 12, and the bottom vertical plate 112 is fixedly connected, and the top is fixedly connected to the mounting block 12. The support plate 13 is recessed inward from the upper surface to form a receiving groove 131. The shape of the receiving groove 131 changes according to needs and is used to fix part of the mold core 3.

[0030] The mounting block 12 is fixed above the support plate 13 and has a first mounting cavity 121. The first mounting cavity 121 passes through the upper and lower surfaces of the mounting block 12 and is connected to the receiving groove 131. A step 122 is provided in the first mounting cavity 121. The step 122 is along the inner wall of the first mounting cavity 121 and is used to fix part of the mold core 3.

[0031] Please see Figure 2 The ejection assembly 14 includes a movable plate 141 and a plurality of ejector rods 142 mounted on the movable plate 141. The movable plate 141 is located between a pair of vertical plates 112 and can move vertically upward under the push of other driving devices and the restriction of the vertical plates 112. The bottoms of the plurality of ejector rods 142 are fixedly connected to the movable plate 141, and the tops extend vertically upward and penetrate the support plate 13 to extend into the mold core 3, so as to push the product in the mold core 3 to be removed.

[0032] A guide member 15 is provided between a pair of vertical plates 112. The bottom of the guide member 15 is fixedly connected to the fixed block 11, and the top thereof extends upwardly and is fixedly connected to the mounting block 12. The guide member 15 is sleeved with an elastic member 16, and the two ends of the elastic member 16 respectively abut against the movable plate 141 and the mounting block 12.

[0033] Please see Figure 1 and Figure 3 The upper mold 2 includes a top plate 21 and a docking block 22 fixedly connected to the top plate 21. The top plate 21 is recessed from the lower surface to form a fixing groove 211. The fixing groove 211 is used to accommodate part of the mold core 3. The upper surface of the docking block 22 is fixedly connected to the lower surface of the top plate 21. The docking block 22 has a second mounting cavity 221. The second mounting cavity 221 passes through the upper and lower surfaces of the docking block 22 and is connected to the fixing groove 211. The second mounting cavity 221 is used to accommodate part of the mold core 3.

[0034] The upper mold 2 further has an injection port 23 , which penetrates through the top plate 21 from above the top plate 21 and extends into the second installation cavity 221 .

[0035] Please see Figure 4 and Figure 5 The mold core 3 includes a lower mold core 31 installed in the lower mold 1 and an upper mold core 32 installed in the upper mold 2. The lower mold core 31 is installed in the first installation cavity 121, and its bottom is against the step 122 and is in a horizontal state. The lower mold core 31 has a first molding cavity 311 and a first through cavity 312. The first molding cavity 311 is formed by being recessed inward from the upper surface of the upper mold core 32, and its shape changes according to the shape of the product. In this embodiment, the first molding cavity 311 has an outer cavity 313 and an inner cavity 314. The outer cavity 313 and the inner cavity 314 are both recessed inward from the upper surface of the lower mold core 31. There is a There is a separation protrusion 315, which separates the outer cavity 313 and the inner cavity 314. The outer cavity 313 is used to fix hard rubber products, and the inner cavity 314 is used to mold soft rubber products. When the glue cannot flow to the predetermined position, resulting in a lack of glue in the product, a through hole 316 is opened at the glue-lacking position, that is, a through hole 316 is opened on the surface of the inner cavity 314, and a breathable part 317 is installed in the through hole 316. The breathable part 317 is made of some breathable and non-glue-permeable material, such as breathable steel. The through hole 316 can vertically penetrate the lower mold core 31 to communicate with the outside world. Secondly, the inner cavity 314 can be in a closed state or have an open state. In this embodiment, the inner cavity 314 has an opening 318.

[0036] The first through cavity 312 is formed by being recessed inward from the lower surface of the lower mold core 31, and is connected to the inner cavity 314 through the opening 318. The lower mold core 31 includes a bottom molding module 33, and the bottom molding module 33 is installed in the first through cavity 312. The bottom molding module 33 extends into the first through cavity 312, and the shape of its top changes according to demand. When the bottom molding module 33 extends into the first through cavity 312, its top extends into the opening 318, and forms a molding cavity with the inner cavity 314.

[0037] Please see Figure 4 and Figure 6The upper mold core 32 is installed in the second installation cavity 221 in a horizontal state. The upper mold core 32 has a second molding cavity 321 and a second through cavity 322. The second molding cavity 321 is formed by being recessed inward from the lower surface of the upper mold core 32, and its shape changes according to the shape of the product. The second through cavity 322 is formed by being recessed inward from the lower surface of the upper mold core 32 and is connected to the second molding cavity 321.

[0038] The upper mold core 32 also includes a top molding module 34, which is installed in the second through cavity 322. The top molding module 34 extends into the second molding cavity 321 through the second through cavity 322. The shape of its bottom changes according to demand. The top molding module 34 moves synchronously with the upper mold core 32. A flow channel 341 is provided in the top molding module 34. The injection port 23 is connected to the flow channel 341. Soft glue is injected into the inner cavity 314 and the second molding cavity 321 through the flow channel 341.

[0039] Please see Figure 1 and Figure 6 The positioning assembly 4 includes a driving member 41, a slider 42 pushed by the driving member 41, and a connecting rod 43. The slider 42 is movably installed in the docking block 22. The driving member 41 is fixed to the outside of the docking block 22 and can drive the slider 42 to move into the mold core 3. The connecting rod 43 is installed at the end of the slider 42, one end of which is sleeved on the slider 42, and the other end passes through the top molding module 34. When the soft glue is injected, the driving member 41 drives the connecting rod 43 to move toward the first molding cavity 311 through the slider 42 to resist the hard glue product and avoid displacement of the hard glue product during glue injection.

[0040] When a soft glue molding mold of the utility model is used, the already formed hard glue product is placed in the first molding cavity 311, the upper mold 2 is docked with the lower mold 1, the upper mold core 32 and the lower mold core 31 form a relatively sealed cavity, and the top molding module 34 and the bottom molding module 33 move relatively at the same time. After docking in place, the driving member 41 drives the connecting rod 43 to move toward the first molding cavity 311 through the slider 42 to support the hard glue product to avoid displacement of the hard glue product during glue injection. The soft glue enters the inner cavity 314 and the second molding cavity 321 through the injection port 23 and the flow channel 341. The spacing between the top molding module 34 and the bottom molding module 33 is small, and the breathable member 317 in the through hole 316 is ventilated, so that the soft glue passes smoothly and glue leakage is avoided. Other driving devices push the ejector rod 142 to remove the product in the mold core 3.

[0041] The utility model is a soft glue molding mold, which has the characteristics of avoiding glue shortage and high yield rate. A relatively sealed cavity is formed by connecting a lower mold core and an upper mold core, and soft glue is injected into the cavity for molding. Then a through hole is opened at a weak point of the soft glue, and a breathable part is installed in the through hole. The sealed cavity can be vented through the breathable part, and the glue can flow smoothly, thereby avoiding glue shortage and improving the yield rate.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soft rubber molding mold, characterized in that: It includes: A lower mold (1), an upper mold (2), and a mold core (3) installed in the lower mold (1) and the upper mold (2); The mold core (3) comprises a lower mold core (31) and an upper mold core (32) which are respectively installed in the lower mold (1) and the upper mold (2); the lower mold core (31) and the upper mold core (32) are respectively recessed inward from opposite sides to form a first molding cavity (311) and a second molding cavity (321); when the first molding cavity (311) and the second molding cavity (321) move relative to each other and butt joint, a gap with a small space is formed; The mold core (3) further comprises a through hole (316) connected to the outside. The through hole (316) is provided in a relatively small gap in the space, and a breathable member (317) is installed inside the through hole. The breathable member (317) is made of a breathable but non-glue-permeable material and is used for exhausting gas when injecting glue into the first molding cavity (311) and the second molding cavity (321).

2. The soft plastic molding mold according to claim 1, characterized in that: The through hole (316) of the first molding cavity (311) has an outer cavity (313) and an inner cavity (314), and both the outer cavity (313) and the inner cavity (314) are formed by being recessed inward from the upper surface of the lower mold core (31), and the outer cavity (313) is used to fix hard plastic products, and the inner cavity (314) is used to mold soft plastic products.

3. The soft plastic molding mold according to claim 2, characterized in that: A separation protrusion (315) is provided between the outer cavity (313) and the inner cavity (314), and the separation protrusion (315) separates the outer cavity (313) and the inner cavity (314).

4. The soft plastic molding mold according to claim 3, characterized in that: The inner cavity (314) has an opening (318) at the bottom.

5. The soft plastic molding die according to claim 4, characterized in that: The lower mold core (31) comprises a first through cavity (312), which is formed by being recessed inward from the lower surface of the lower mold core (31) and is connected to the inner cavity (314) through the opening (318).

6. The soft plastic molding die according to claim 5, characterized in that: The lower mold core (31) includes a bottom molding module (33), and the bottom molding module (33) is installed in the first through cavity (312). The bottom molding module (33) extends into the first through cavity (312), and the shape of its top is changed according to demand. When the bottom molding module (33) extends into the first through cavity (312), its top extends into the opening (318) to form a molding cavity with the inner cavity (314).

7. The soft plastic molding die according to claim 2, characterized in that: The upper mold core (32) has a second through cavity (322), and the second through cavity (322) is formed by being recessed inwardly from the lower surface of the upper mold core (32) and is communicated with the second molding cavity (321).

8. The soft plastic molding die according to claim 7, characterized in that: The upper mold core (32) also includes a top molding module (34), and the top molding module (34) is installed in the second through cavity (322). The top molding module (34) extends into the second molding cavity (321) through the second through cavity (322), and the shape of its bottom changes according to demand. The top molding module (34) moves synchronously with the upper mold core (32).

9. The soft plastic molding die according to claim 8, characterized in that: The top molding module (34) is provided with a flow channel (341), and soft glue is injected into the inner cavity (314) and the second molding cavity (321) through the flow channel (341).

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