Product embedding secondary forming deformation improvement structure
By wrapping the one-injection product in the two-injection product and using structures such as dovetail slots and waterproof strips, the serious warping problem after forming of the two-injection injection molding product is solved, and the product bonding firmness and waterproof effect are improved.
Patent Information
- Application Number
- CN202421500068.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the molding process, the plastic is severely warped due to the cooling and shrinkage of the plastic, which affects the assembly and waterproofing effect of the product.
Design a product to be embedded in secondary molding and deformation improvement structure. By wrapping the one-shot product in a two-shot product, using dovetail slots and waterproof strips, the bonding firmness and waterproof effect of the product are improved.
It effectively reduces product deformation, improves the combination of first- and second-injection products, and increases the waterproof effect.
Smart Images
Figure CN222691751U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mold injection molding, in particular to a product embedded secondary molding deformation improvement structure. Background Art
[0002] Two-shot injection molding products such as Figure 1 As shown, after the product is formed in the first shot, the antenna is coated with LDS, embedded in the public mold, and formed in the second shot. After the second shot, the two ends are severely warped, with the warping > 1MM. When the second shot is formed on the first shot product, only the top is heated, and the plastic shrinks after cooling. The second shot product shrinks, causing the product to warp, and the product is deformed into a bow shape. The bottom surface of the product is the TP surface. After the second shot molding, the product shrinks and deforms, resulting in the TP surface (reference surface) being unable to assemble the screen, and subsequent assembly of the product cannot be carried out.
[0003] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a product embedded secondary molding deformation improvement structure. Utility Model Content
[0004] The main technical problem solved by the utility model is to provide a product embedded in a secondary molding deformation improvement structure, and the one-shot and two-shot products are changed from the original upper and lower split type to a wrapped type, thereby reducing deformation, and the one-shot and two-shot products are firmly combined to increase the waterproof effect.
[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a product embedded in secondary molding deformation improvement structure, the product embedded in secondary molding deformation improvement structure includes a one-shot product, an antenna LDS coating and a two-shot product, the surface of the one-shot product is coated with a layer of antenna LDS coating, the one-shot product is wrapped with a two-shot product, the two-shot product wraps the bottom surface, top surface and part of the side surface of the one-shot product, the product TP surface is arranged on the two-shot product, a number of positioning holes for positioning are arranged on the two outer side surfaces of the one-shot product, the mounting holes on the side of the product are arranged on the outer side surface of the two-shot product, and the sound outlet hole on the product is arranged on the two-shot product.
[0006] Preferably, the side connections of the one-shot product and the two-shot product are fixedly connected by a plurality of dovetail grooves.
[0007] Preferably, a plurality of raised waterproof strips are provided on the bottom surface where the one-shot product and the two-shot product are combined.
[0008] Preferably, the cross-section of the waterproof strip is triangular.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] The one-shot and two-shot products are changed from the original upper and lower split type to a wrapped type to reduce deformation;
[0011] The positioning hole is designed on the first shot product. After the first shot product is embedded in the male mold, the mold is closed and the slider pin of the male mold is inserted into the positioning hole to fix the product to prevent the first shot product from being pushed up by the injection when the second shot is formed.
[0012] The TP surface of the product is set on the two-shot product to ensure the accuracy of the reference surface. The mounting holes and sound outlet holes are set on the two-shot product to ensure the hole size and avoid the appearance of step burrs at the hole position.
[0013] The side joints of the one-shot and two-shot products are fixedly connected by several dovetail slots to ensure that the product is more firmly connected after two-shot molding;
[0014] During the second shot molding, the material temperature fuses the waterproof strips, and the first and second shot products are better combined, increasing the first and second shot waterproof effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of an existing two-shot injection molding product.
[0016] Figure 2 This is a schematic diagram of a product embedded in the secondary molding deformation improvement structure.
[0017] Figure 3 This is a schematic diagram of the development of a product with an embedded secondary molding deformation improvement structure.
[0018] Figure 4 This is a schematic diagram from another perspective of a product with an improved structure embedded in secondary molding deformation.
[0019] Figure 5 This is a schematic diagram of a one-shot product with a secondary molding deformation-improving structure.
[0020] Figure 6 It is a schematic diagram of the product of the utility model.
[0021] Among them, 1. one-shot product, 11. positioning hole, 12. waterproof strip, 2. antenna LDS coating, 3. two-shot product, 31. mounting hole, 32. sound outlet hole, 33. dovetail slot, 00, TP surface. DETAILED DESCRIPTION
[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0023] See also Figures 2 to 6 , the utility model embodiment includes:
[0024] A product embedded in secondary molding deformation improvement structure, the product embedded in secondary molding deformation improvement structure comprises a one-shot product 1, an antenna LDS coating 2 and a two-shot product 3, the one-shot product 1 is coated with a layer of antenna LDS coating 2, the one-shot product 1 is surrounded by the two-shot product 3, the two-shot product 3 wraps the bottom surface, top surface and part of the side surface of the one-shot product 1, the product TP surface 00 is set on the two-shot product 3, the reference surface is formed by the two-shot molding to ensure the accuracy of the reference surface, the two outer sides of the one-shot product 1 are provided with a plurality of positioning holes 11 for positioning, and the outer side surfaces of the positioning holes 11 are not wrapped with the two-shot product Product 3, the positioning hole 11 is designed on the one-shot product 1. After the one-shot product 1 is embedded in the public mold, the mold is closed, and the slider pin of the public mold is inserted into the positioning hole 11 to fix the product to prevent the injection molding from raising the one-shot product 1 during the second-shot molding. The mounting hole 31 on the product has size requirements. The mounting hole 31 on the side of the product is set on the outer side of the two-shot product 3. The mounting hole 31 is set on the two-shot product 3 to ensure the hole size. If the mounting hole 31 is set on the one-shot product 1, the positioning and deformation during the second-shot molding will affect the size. The sound hole 32 on the product is set on the two-shot product 3 to avoid the appearance of step burrs at the sound hole 32.
[0025] The side joints of the first-shot product 1 and the second-shot product 3 are fixedly connected via a plurality of dovetail slots 33 . The arrangement of the dovetail slots 33 can ensure that the products are more firmly combined after the second-shot molding.
[0026] The bottom surface where the one-shot product 1 and the two-shot product 3 are combined is provided with a plurality of raised waterproof strips 12. During the two-shot molding, the material temperature fuses the waterproof strips, so that the one-shot product 1 and the two-shot product 3 are better combined, thereby increasing the one-shot and two-shot waterproof effects. The cross-section of the waterproof strip 12 is triangular.
[0027] The utility model discloses a product embedded in a secondary molding deformation improvement structure, wherein the one-shot and two-shot products are changed from the original upper and lower split type to a wrapping type, thereby reducing deformation, and the one-shot and two-shot products are firmly combined to increase the waterproof effect.
[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A product embedded in a secondary molding deformation improvement structure, characterized in that: The invention comprises a first-shot product (1), an antenna LDS coating (2) and a second-shot product (3), wherein a layer of antenna LDS coating (2) is applied on the surface of the first-shot product (1), the first-shot product (1) is surrounded by the second-shot product (3), the second-shot product (3) covers the bottom surface, the top surface and part of the side surface of the first-shot product (1), the product TP surface (00) is arranged on the second-shot product (3), a plurality of positioning holes (11) for positioning are arranged on two outer side surfaces of the first-shot product (1), the mounting holes (31) on the side surfaces of the product are arranged on the outer side surfaces of the second-shot product (3), and the sound outlet hole (32) on the product is arranged on the second-shot product (3).
2. A product embedded secondary molding deformation improvement structure according to claim 1, characterized in that: The side connection points of the first shot product (1) and the second shot product (3) are fixedly connected via a plurality of dovetail slots (33).
3. The product embedded secondary molding deformation improvement structure according to claim 1, characterized in that: The bottom surface where the first shot product (1) and the second shot product (3) are combined is provided with a plurality of raised waterproof strips (12).
4. A product embedded secondary molding deformation improvement structure according to claim 3, characterized in that: The waterproof strip (12) has a triangular cross section.