Complementary food bowl injection molding process
By using two sets of mold injection molding processes to form a rigid PP bowl and a soft TPE base, and then connecting them with adhesive, the problem of balancing rigidity and flexibility in infant feeding bowls is solved, resulting in a stable, seamless, and hygienic overall structure.
Patent Information
- Application Number
- CN202610037919.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-13
- Publication Date
- 2026-02-27
AI Technical Summary
Existing infant feeding bowls are insufficient in balancing the rigidity of the bowl body with the flexibility and absorbency of the base. Traditional connection methods are unstable, unhygienic, and increase production costs and complexity.
Two sets of molds are used to injection mold the rigid PP bowl and the soft TPE base respectively. Seamless bonding is achieved by applying glue in a spot-applied manner. Combining the material properties of the two, a strong and seamless overall structure is formed.
It achieves a balance between the rigidity of the bowl body and the flexibility and adsorption of the base, resulting in a long product lifespan, easy cleaning, and high production efficiency, while avoiding the defects of traditional connection methods.
Smart Images
Figure CN121572533A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a kind of complementary food bowl injection molding process. BACKGROUND
[0002] At present, the baby complementary food bowl with antiskid, adsorption function on the market, to realize the structure of bowl body and adsorption base, mainly exists two kinds of production methods: the first is to adopt the same material by once injection molding bowl body and base.The structure of this way is strong, but cannot meet the use requirements: if using hard material, base lacks soft deformation ability, adsorption is weak and not prevent falling;If using soft material, bowl body is insufficiently rigid, is easily deformed, is not conducive to scooping food.The second is to adopt different materials to manufacture bowl body and base, and then connect them by buckle, thread connection or glue bonding, etc.Mechanical or chemical connection method can fix them.This method can meet the rigidity of bowl body and the soft adsorption of base, but has obvious shortcomings: connection structure is complex, increases cost and assembly process;Connection part is easy to store dirt, inconvenient to clean;After long-term use, connection is easy to loosen or glue, affects service life and safety;In addition, the way of separate manufacturing and reassembling also restricts production automation and efficiency.
[0003] Therefore, whether single material integrated molding cannot meet the functional requirements or heterogeneous connection has stability, hygiene and efficiency problems, all show that the existing technology faces challenges in realizing the unified optimization of structure-function-process of complementary food bowl. SUMMARY
[0004] The purpose of the present application is to provide a complementary food bowl injection molding process, which can meet the requirements of bowl body rigidity and base flexibility and adsorption, and realize firm, seamless and efficient combination of the two.
[0005] To achieve the above purpose, the technical scheme of the present application is to design a complementary food bowl injection molding process, which includes bowl body and base, and the injection molding process includes the following steps: Step one, in the first set of PP injection mold, PP hard bowl body is formed by valve needle hot runner system, the PP injection mold is provided with air ejector mechanism, and the air ejector mechanism is used to eject the formed bowl body; Step two, the bowl body formed in step one is used as an insert, is transferred and positioned in the cavity of the second set of TPE encapsulation mold, TPE soft base is formed by point-in glue method, and the base is connected with the bowl body by encapsulation, and the finished product is ejected after mold opening; Step three, take out the finished product, trim and inspect.
[0006] Preferably, the bowl mouth inside edge of the bowl body is formed with anti-spill lip extending to the center of the bowl in the form of a circular arc.
[0007] Preferably, the TPE rubber-coated mold is provided with a positioning mechanism for positioning the bowl body, the positioning mechanism comprising a positioning seat, both sides of the positioning seat are respectively provided with a sliding hole, a spring block is arranged in the hole of the sliding hole, and a guide hole is arranged at the bottom of the sliding hole, the spring block is connected with a guide rod, the other end of the guide rod extends into the guide hole, and a spring is arranged outside the guide rod, the spring is connected between the spring block and the bottom of the sliding hole.
[0008] Preferably, the TPE rubber-coated mold is provided with two rubber-coated sliding blocks respectively located on both sides of the positioning seat, and the two rubber-coated sliding blocks are respectively connected with a driving device.
[0009] Preferably, the driving device is a pneumatic cylinder or a hydraulic cylinder.
[0010] The advantages and beneficial effects of the present application are as follows: a complementary food bowl injection molding process is provided, which is injection molded by two sets of molds, and the obtained product has the characteristics of durable PP hard bowl body, easy cleaning, anti-skid, anti-falling, strong adsorption of TPE soft base, and the two are combined into one, which is beautiful, safe and has long service life. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 is a schematic view of the PP injection mold in the present application.
[0012] Figure 2 is a schematic view of the TPE rubber-coated mold in the present application.
[0013] Figure 3 is Figure 2 is an enlarged view of A in
[0014] Figure 4 is a schematic view of the complementary food bowl in the present application. DETAILED DESCRIPTION
[0015] The specific embodiments of the present application will be further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.
[0016] The technical solutions of the specific embodiments of the present application are as follows: In one specific embodiment, as shown in Figure 1 , Figure 2 and Figure 4 , an injection molding process for a complementary food bowl is provided, the complementary food bowl comprising a bowl body 1 and a base 2, the injection molding process comprising the following steps: Step one, in the first set of PP injection mold 10, a PP hard bowl body 1 is injection molded by a valve needle hot runner system, the PP injection mold 10 is provided with a gas top mechanism 11, and the gas top mechanism 11 is used to realize the traceless ejection of the PP hard bowl body 1; Step 2: The bowl body 1 formed in Step 1 is used as an insert, transferred and positioned in the cavity of the second TPE overmolding mold 20, and the TPE soft base 2 is formed by injection molding. The base 2 and the bowl body 1 are then overmolded and connected. After the mold is opened, the finished product is ejected. Step 3: Remove the finished product, trim the edges, and inspect it.
[0017] The above solution employs two collaboratively designed molds, using a secondary injection molding process to form the bowl body 1 and base 2 from different materials in stages. The bowl body 1 can be made of rigid PP to ensure shape stability and ease of use, while the base 2 can be made of soft TPE to provide excellent adhesion and cushioning, thus meeting the product's multifunctional requirements from the material source. Furthermore, it abandons traditional mechanical or chemical bonding methods, utilizing a second injection molding (overmolding) process to achieve direct molecular-level bonding between the TPE base 2 and the PP bowl body 1 during the molding process. This bonding method is seamless, strong, and gapless, fundamentally solving the problems of instability, unsanitary conditions, and easy aging associated with traditional bonding methods.
[0018] In another specific embodiment, such as Figure 4 As shown, the inner edge of the bowl body 1 is formed with a spill-proof lip 3 that curves inward toward the center of the bowl.
[0019] The above solution involves forming a rounded, inwardly curved anti-spill lip 3 on the inner edge of the bowl 1. When scooping food or soup, the lip naturally flows into the spoon, significantly reducing spillage. The PP injection mold 10 includes a modular insert for forming the anti-spill lip 3 structure.
[0020] In another specific embodiment, such as Figure 2 and Figure 3 As shown, the TPE overmolding mold 20 is provided with a positioning mechanism for positioning the bowl body 1. The positioning mechanism includes a positioning seat 21. The positioning seat 21 has sliding holes 22 on both sides. A spring block 23 is provided in the opening of the sliding hole 22, and a guide hole is provided at the bottom of the sliding hole 22. The spring block 23 is connected to a guide rod 24. The other end of the guide rod 24 extends into the guide hole, and a spring 25 is sleeved on the outside of the guide rod 24. The spring 25 is connected between the spring block 23 and the bottom of the sliding hole 22.
[0021] The above scheme is adopted: the bowl 1 placed in the TPE rubber coating mold 20 is positioned by the positioning mechanism, ensuring that the bowl 1 is fixed in position and has no deviation before the mold is closed. Specifically, when placing the bowl 1, the bowl 1 is placed with the bowl opening facing down on the positioning seat 21. During this process, the bowl 1 will be pressed into the sliding hole 22 by the anti-splashing lip 3 inside the bowl opening and compress the elastic block 23 and spring 25. When the bowl 1 is placed in position, the elastic block 23 will support the inner wall of the bowl 1 by the elastic restoring force of the spring 25, thereby achieving the fixation of the bowl 1.
[0022] In another specific embodiment, as shown in Figure 2 The TPE rubber coating mold 20 is provided with two rubber sealing sliding blocks 26 on both sides of the positioning seat 21, respectively, and the two rubber sealing sliding blocks 26 are respectively connected with driving devices 27.
[0023] The above scheme is adopted: when the TPE rubber coating mold 20 is closed, the two rubber sealing sliding blocks 26 move towards each other and abut against the side wall of the bowl 1, and at the same time form a closed forming cavity with the TPE rubber coating mold 20. The TPE material is only formed in a specific area at the bottom of the bowl 1, and cannot overflow to other non-design areas. When the TPE rubber coating mold 20 is opened, the two rubber sealing sliding blocks 26 move away from each other in order to eject the finished product.
[0024] In another specific embodiment, as shown in Figure 2 Figure 2 The driving device 27 is a pneumatic cylinder or a hydraulic cylinder.
[0025] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.
Claims
1. A process for injection molding a baby food bowl, the baby food bowl comprising a bowl body and a base, characterized in that, The injection molding process includes the following steps: Step 1: In the first set of PP injection molds, a rigid PP bowl is injection molded through a valve needle hot runner system. The PP injection mold is equipped with an air ejector mechanism, which is used to eject the molded bowl. Step 2: Use the bowl body formed in Step 1 as an insert, transfer and position it in the cavity of the second TPE overmolding mold, form a TPE soft base by applying glue in a dotted manner, and make the base and bowl body overmolded and connected. After the mold is opened, eject to obtain the finished product. Step 3: Remove the finished product, trim the edges, and inspect it.
2. The injection molding process for the baby food bowl according to claim 1, characterized in that, The inner edge of the bowl's rim is formed with a spill-resistant lip that curves inward toward the center of the bowl.
3. The injection molding process for the baby food bowl according to claim 2, characterized in that, The TPE overmolding mold is provided with a positioning mechanism for positioning the bowl body. The positioning mechanism includes a positioning seat, and sliding holes are provided on both sides of the positioning seat. A spring block is provided in the opening of the sliding hole, and a guide hole is provided at the bottom of the sliding hole. A guide rod is connected to the spring block, and the other end of the guide rod extends into the guide hole. A spring is sleeved on the outside of the guide rod, and the spring is connected between the spring block and the bottom of the sliding hole.
4. The injection molding process for the baby food bowl according to claim 3, characterized in that, The TPE overmolding mold is provided with two sealing sliders located on both sides of the positioning seat, and the two sealing sliders are respectively connected to a driving device.
5. The injection molding process for the baby food bowl according to claim 4, characterized in that, The driving device is a pneumatic cylinder or a hydraulic cylinder.