A boxing target and method of production thereof

Abstract

The application provides a boxing target and a production method thereof. The boxing target comprises an inner supporting body, a hand-held piece, an elastic surface layer and an elastic foaming layer. The outer part of the inner supporting body is roll-molded with the elastic surface layer, and a filling cavity is formed between the inner supporting body and the elastic surface layer. A pouring opening is arranged on the inner supporting body and communicates with the filling cavity. The elastic foaming layer is foaming-molded in the filling cavity by an elastic foaming filling material, and the elastic foaming filling material is poured into the filling cavity through the pouring opening. The hand-held piece is installed on the inner supporting body. The boxing target prepared by the application is similar to the human body structure, and the trainer has a feeling of hitting the human body when hitting, so that the training effect and the hitting experience are improved.

Description

[Technical Field]

[0001] This invention relates to the field of sports equipment technology, and in particular to a boxing target and its manufacturing method. [Background Technology]

[0002] Boxing is a combat sport involving fighting while wearing boxing gloves; when practicing boxing, students usually need to use boxing targets.

[0003] To guide trainees in flexible reaction training, coaches typically wear handheld punching targets. Wearing the target allows coaches to flexibly change positions during training to guide trainees. For example, Chinese utility model patent application CN201721263383.7 discloses a high-performance, protective punching target, comprising a target body consisting of a buffer plate and a buffer box. The buffer plate has a first buffer layer, and the buffer box is integrated with a fixed base. A sliding block is provided between the buffer box and the buffer plate. A second buffer layer is embedded inside the fixed base, and a handheld hook-and-loop fastener is fixedly installed on the fixed base. This punching target achieves double-layer protection through the first and second buffer layers. The buffer plate and buffer box work together to convert the frontal impact force generated by the trainee's punches into lateral force, significantly reducing the frontal impact force on the coach and effectively preventing injuries to the coach's wrists, elbows, and shoulders.

[0004] Because boxing involves striking multiple parts of the human body (such as the head and abdomen) during actual training, and the structure of existing wearable boxing targets differs significantly from the human body, trainees do not experience the sensation of striking the body, resulting in a poor striking experience and training effectiveness. In view of these problems, the inventors of this case conducted in-depth research on this issue, leading to the development of this invention. [Summary of the Invention]

[0005] The technical problem to be solved by the present invention is to provide a boxing target and its production method, which solves the problem that the structure of existing wearable boxing targets is very different from the human body structure, and trainees do not have the feeling of hitting the human body during training, resulting in poor hitting experience and training effect.

[0006] This invention is implemented as follows:

[0007] In a first aspect, a boxing target includes an inner support body, a handheld component, an elastic surface layer, and an elastic foam layer; the elastic surface layer is rotationally molded on the outside of the inner support body, and a filling cavity is formed between the inner support body and the elastic surface layer; the inner support body is provided with an injection opening communicating with the filling cavity, the elastic foam layer is foamed and molded in the filling cavity by elastic foam filler, and the elastic foam filler is injected into the filling cavity through the injection opening; the handheld component is mounted on the inner support body.

[0008] Furthermore, the material composition of the elastic surface layer is as follows by weight: 2-3 parts heat resistant agent, 4-5 parts stabilizer, 2-4 parts softener, 65-75 parts oil, and 75-85 parts polyvinyl chloride paste resin.

[0009] Furthermore, the inner support body has an assembly cavity with its opening facing downwards; both ends of the handheld component are provided with insertion posts, and the cavity wall of the assembly cavity is provided with insertion holes, through which the insertion posts are inserted into the elastic foam layer.

[0010] Furthermore, the handheld component has a hollow structure, and each of the plug-in pins has a connecting opening at its free end that communicates with the filling chamber; the filling chamber and the interior of the handheld component are integrally formed into the elastic foam layer by foaming with elastic foam filler.

[0011] Furthermore, both ends of the handheld component are provided with limit blocks, and the insertion post is provided on the free end face of the limit block; the cavity wall of the assembly cavity forms a limit groove, the limit groove extends downward to the bottom of the inner support body, and the limit block is assembled in the limit groove.

[0012] Furthermore, the lower edge of the inner support body extends outward to form an extension portion, the edge of the extension portion is sealed and connected to the elastic surface layer, and the injection opening is provided on the extension portion.

[0013] Furthermore, the inner support body is integrally formed by injection molding, and the handheld component is integrally formed by blow molding.

[0014] Furthermore, the elastic surface layer adopts a human face skin, and the inner support body adopts a human skull structure.

[0015] Secondly, a method for producing a boxing target, characterized by comprising the following steps:

[0016] Step S1: Pre-manufacture the inner support body and the handheld component, wherein the inner support body is provided with an injection opening;

[0017] Step S2: Place the inner support body into the rotational molding mold, add material components into the rotational molding mold, and form an elastic surface layer on the outside of the inner support body through the rotational molding process, so that a filling cavity is formed between the inner support body and the elastic surface layer, and the filling cavity is connected to the injection opening.

[0018] Step S3: Install the handheld component onto the inner support body, and inject elastic foam filler into the filling cavity through the injection opening, so that the elastic foam filler foams and forms an elastic foam layer in the filling cavity.

[0019] Furthermore, in step S2, the molding temperature of the rotational molding die is 260℃-390℃, and the rotational speed of the rotational molding die is 1400-1600 revolutions per hour.

[0020] The material components are as follows by weight: 2-3 parts heat resistant agent, 4-5 parts stabilizer, 2-4 parts softener, 65-75 parts oil, and 75-85 parts polyvinyl chloride paste resin.

[0021] By adopting the technical solution of the present invention, at least the following beneficial effects are achieved:

[0022] 1. An elastic surface layer is formed on the outside of the inner support body using rotational molding technology, creating a filling cavity between the inner support body and the elastic surface layer. An elastic foam layer is then formed within the filling cavity using elastic foam filler. This results in a three-layer structure for the entire boxing target. The outermost elastic surface layer and the middle elastic foam layer are both elastic, while the innermost inner support body provides stable support for the elastic surface layer and the elastic foam layer. Therefore, the entire boxing target is quite similar to the human body structure, giving the trainee a feeling of hitting a human body when striking, thus enhancing the striking experience.

[0023] 2. By designing the inner support body to mimic the structure of a human skull and the elastic surface layer to mimic the skin of a human face, the final boxing target is extremely similar to the structure of a real human head. The inner support body is equivalent to the bone structure of a human head, the elastic surface layer is equivalent to the skin structure of a human head, and the elastic foam layer is equivalent to the muscle and fat structure of a human head. Therefore, trainees can effectively simulate hitting the human head during training and give them the feeling of hitting a real human head, which can effectively improve training results and the hitting experience.

[0024] 3. By forming an assembly cavity with an opening facing downwards on the inner support body and placing the handpiece inside the assembly cavity, the weight of the entire boxing target can be reduced, and the coach can easily hold the boxing target firmly in his hand through the handpiece. This allows the coach to change different positions through hand movements, thereby guiding students to flexibly learn various attack techniques (such as left and right straight punches, left and right uppercuts, left and right hooks, kicks, etc.).

[0025] 4. By designing the handheld component as a hollow structure, with insertion posts and limiting blocks at both ends, and corresponding insertion holes and limiting grooves on the cavity walls, the handheld component can be effectively limited by the interlocking of the insertion posts and holes and the interlocking of the limiting blocks and limiting grooves after its two ends are assembled with the inner support body. This also allows the elastic foam filler to enter the interior of the handheld component for foaming and molding, thus effectively improving the connection strength between the handheld component and the inner support body and ensuring that the handheld component will not detach from the inner support body during use.

[0026] 5. By forming an extension at the lower edge of the inner support body and sealing the edge of the extension with the elastic surface layer during rotational molding, a better space can be formed between the inner support body and the elastic surface layer. This makes the elastic foam layer and the elastic surface layer more elastic after they are combined, which can further enhance the impact feel. [Attached Image Description]

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is an overall structural diagram of the boxing target of the present invention;

[0029] Figure 2 This is a structural diagram of the boxing target of the present invention without the elastic foam layer;

[0030] Figure 3 This is a cross-sectional view of the boxing target of the present invention;

[0031] Figure 4 This is a cross-sectional view of the boxing target of the present invention without the elastic foam layer;

[0032] Figure 5 This is a structural diagram of the inner support body in this invention;

[0033] Figure 6 This is a structural diagram of the handheld component in this invention;

[0034] Figure 7 This is a diagram of the end structure of the handheld component in this invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100 punching targets;

[0037] The inner support body 1, the injection opening 11, the assembly cavity 12, the insertion hole 121, the limiting groove 122, and the extension 13.

[0038] Handheld component 2, plug-in post 21, connecting opening 211, limiting block 22;

[0039] Elastic surface layer 3;

[0040] Elastic foam layer 4;

[0041] Filling chamber 5.

Detailed Implementation Methods

[0042] To better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing these embodiments and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0044] Please see Figures 1 to 7 As shown, the present invention provides a boxing target 100, which includes an inner support body 1, a handheld component 2, an elastic surface layer 3, and an elastic foam layer 4. The handheld component 2 is installed on the inner support body 1, so that the coach can hold the boxing target 100 in his hand through the handheld component 2 and change different positions through hand movements, thereby guiding the trainees to conduct flexible training.

[0045] The inner support body 1 has an elastic surface layer 3 formed by rotational molding on its exterior, and a filling chamber 5 is formed between the inner support body 1 and the elastic surface layer 3; the inner support body 1 is provided with an injection opening 11 that communicates with the filling chamber 5, the elastic foam layer 4 is foamed and formed in the filling chamber 5 by elastic foam filler, and the elastic foam filler is injected into the filling chamber 5 through the injection opening 11. Because the elastic surface layer 3 has skin-like elasticity, and a filling cavity 5 needs to be formed between the inner support body 1 and the elastic surface layer 3, the elastic surface layer 3 needs to be formed on the outside of the inner support body 1 using rotational molding during manufacturing. Rotational molding, also known as rotational molding, is a hollow molding method for thermoplastic plastics. This method involves first adding the raw material into a rotational molding mold, then continuously rotating the mold along two vertical axes and heating it. Under the action of gravity and heat, the raw material inside the mold gradually and evenly coats, melts, and adheres to the entire surface of the mold cavity, thus forming the desired shape. After cooling and solidification, the product is obtained. The elastic foam filler can be a commonly used material on the market (such as polyurethane high-resilience foam). In specific implementation of this invention, the purchased elastic foam filler is simply poured into the filling cavity 5 between the inner support body 1 and the elastic surface layer 3 through the injection opening 11 for foaming and molding.

[0046] This invention employs a rotational molding process to form an elastic surface layer 3 on the outside of the inner support body 1, creating a filling chamber 5 between the inner support body 1 and the elastic surface layer 3. An elastic foam layer 4 is then formed within the filling chamber 5 using elastic foam filler. This results in a three-layer structure for the entire boxing target 100. The outermost elastic surface layer 3 and the middle elastic foam layer 4 are both elastic, while the innermost inner support body 1 provides stable support for both the elastic surface layer 3 and the elastic foam layer 4. Therefore, the entire boxing target 100 closely resembles the human body structure, providing a striking sensation similar to hitting a human body and enhancing the striking experience.

[0047] In one specific embodiment of the present invention, the elastic surface layer 3 is made of human facial skin, and the inner support body 1 is made of human skull structure. In this specific embodiment, by designing the inner support body 1 to resemble a human skull structure and the elastic surface layer 3 to resemble human facial skin, the final boxing target 100 is extremely similar to the structure of a real human head. The inner support body 1 corresponds to the bone structure of the human head, the elastic surface layer 3 corresponds to the skin structure of the human head, and the elastic foam layer 4 corresponds to the muscle and fat structure of the human head. Therefore, trainees can effectively simulate striking the human head during training, providing them with the feeling of striking a real human head, thus effectively improving training results and the striking experience. Of course, the above is only one specific embodiment of the present invention, but the present invention is not limited to this. In specific implementations, the inner support body 1 can also adopt a bone structure mimicking other parts of the human body or an animal bone structure, and the elastic surface layer 3 can also adopt a skin structure mimicking other parts of the human body or an animal skin structure.

[0048] In this invention, to make the resulting elastic surface layer 3 more similar to the structure of human skin, thereby enhancing the impact feel, the material components of the elastic surface layer 3 are as follows by weight: 2-3 parts heat-resistant agent, 4-5 parts stabilizer, 2-4 parts softener, 65-75 parts oil, and 75-85 parts polyvinyl chloride paste resin. More specifically, the heat-resistant agent is R39, the stabilizer is 1934, the softener is 2050, the oil is dibutyl phthalate oil, and the polyvinyl chloride paste resin is a dispersion formed from a paste-like PVC powder in a non-volatile plasticizer. The heat-resistant agent improves the heat resistance of the material, ensuring that the elastic surface layer 3 can bond integrally with the edge of the extension 13 during rotational molding; the stabilizer enhances the stability of the material; and the softener softens the material, ensuring that the resulting elastic foam layer 4 is elastic.

[0049] In this invention, an assembly cavity 12 with a downward opening is formed inside the inner support body 1; both ends of the handheld component 2 are provided with insertion posts 21, and the cavity wall of the assembly cavity 12 is provided with insertion holes 121. The insertion posts 21 are inserted into the elastic foam layer 4 through the insertion holes 121. By forming an assembly cavity 12 with a downward opening on the inner support body 1 and placing the handheld component 2 inside the assembly cavity 12, this invention can reduce the weight of the entire boxing target 100 and make it convenient for the coach to hold the boxing target 100 firmly in their hand through the handheld component 2. This allows the coach to change different positions through hand movements, thereby guiding students to flexibly learn various attack techniques (such as left and right straight punches, left and right uppercuts, left and right hooks, kicks, etc.); at the same time, by inserting the insertion posts 21 at both ends of the handheld component 2 into the elastic foam layer 4 through the insertion holes 121 in the cavity wall of the assembly cavity 12, the handheld component 2 can be better connected to the inner support body 1.

[0050] More specifically, the handheld component 2 has a hollow structure, and each of the plug-in posts 21 has a connecting opening 211 at its free end that communicates with the filling chamber 5, so that the elastic foam filler can enter the interior of the handheld component 2 through the connecting opening 211; the filling chamber 5 and the interior of the handheld component 2 are integrally formed by foaming the elastic foam filler to form the elastic foam layer 4, that is, the elastic foam layer 4 can cover the space of the filling chamber 5 and the interior space of the handheld component 2.

[0051] More specifically, both ends of the handheld component 2 are provided with limiting blocks 22, and the insertion pins 21 are disposed on the free end faces of the limiting blocks 22; the cavity wall of the assembly cavity 12 forms a limiting groove 122, the limiting groove 122 extends downward to the bottom of the inner support body 1, and the limiting blocks 22 are assembled in the limiting groove 122. During the specific assembly of the handheld component 2 of the present invention, the insertion pins 21 at both ends of the handheld component 2 need to be inserted into the insertion holes 121 opened on the assembly cavity 12, and the limiting blocks 22 are held in the limiting groove 122. Then, elastic foam filler is injected into the space between the inner support body 1 and the elastic surface layer 3 and into the interior of the handheld component 2 through the injection opening 11, so that the elastic foam filler foams and forms an elastic foam layer 4 between the inner support body 1 and the elastic surface layer 3 and into the interior of the handheld component 2. Preferably, the handheld component 2 can be a rod-shaped plastic part, and the outer wall of the handheld component 2 can form a concave-convex structure to increase the friction when the instructor holds it.

[0052] This invention designs the handheld component 2 as a hollow structure, with insertion posts 21 and limiting blocks 22 at both ends of the handheld component 2. Insertion holes 121 and limiting grooves 122 are correspondingly provided on the cavity wall of the assembly cavity 12. This allows the handheld component 2 to be effectively limited by the cooperation of the insertion posts 21 and insertion holes 121, and the limiting blocks 22 and limiting grooves 122, after the two ends of the handheld component 2 are assembled with the inner support body 1. Simultaneously, it allows the elastic foam filler to enter the interior of the handheld component 2 for foaming and molding. Therefore, it effectively improves the connection strength between the handheld component 2 and the inner support body 1, ensuring that the handheld component 2 will not detach from the inner support body 1 during use.

[0053] In this invention, the lower edge of the inner support body 1 extends outward to form an extension portion 13. The edge of the extension portion 13 is sealed and connected to the elastic surface layer 3. Specifically, the edge of the extension portion 13 is directly and fixedly connected to the elastic surface layer 3 during rotational molding. The injection opening 11 is provided on the extension portion 13. By forming an extension portion 13 at the lower edge of the inner support body 1 and sealing the edge of the extension portion 13 to the elastic surface layer 3 during rotational molding, this invention allows for a better accommodating space between the inner support body 1 and the elastic surface layer 3. This makes the elastic foam layer 4 more elastic after being combined with the elastic surface layer 3, further enhancing the impact feel.

[0054] In this invention, the inner support body 1 is integrally injection molded using an injection mold to ensure the strength of the entire inner support body 1 and prevent damage during use. This also makes the manufacturing of the inner support body 1 more convenient. The handheld component 2 is integrally blow molded using a blow molding mold to ensure the strength of the entire handheld component 2 and prevent damage during use. This also makes the manufacturing of the handheld component 2 more convenient.

[0055] The present invention also provides a method for producing a boxing target 100. The specific structure of the boxing target 100 is described in detail above. The production method includes the following steps:

[0056] Step S1: Pre-manufacture the inner support body 1 and the handheld part 2. The inner support body 1 is provided with an injection opening 11 to facilitate the injection of elastic foam filler through the injection opening 11. The inner support body 1 is integrally formed by injection molding using an injection mold. The handheld part 2 is integrally formed by blow molding using a blow molding mold, so that the handheld part 2 can form a hollow structure.

[0057] Step S2: Place the inner support body 1 into the rotational molding mold, add material components into the rotational molding mold, and form an elastic surface layer 3 on the outside of the inner support body 1 through the rotational molding process, so that a filling chamber 5 is formed between the inner support body 1 and the elastic surface layer 3. The filling chamber 5 is connected to the injection opening 11 so that the elastic foam filler can be injected into the filling chamber 5 through the injection opening 11.

[0058] Step S3: Install the handheld part 2 onto the inner support body 1, and inject elastic foam filler into the filling chamber 5 through the injection opening 11, so that the elastic foam filler foams and forms an elastic foam layer 4 in the filling chamber 5.

[0059] In this invention, in order to better achieve the formation of an elastic surface layer 3 on the outside of the inner support body 1, the forming temperature of the rotational molding mold is 260℃-390℃ and the rotational speed of the rotational molding mold is 1400-1600 revolutions per hour.

[0060] In this invention, to obtain an elastic surface layer 3 that more closely resembles the structure of human skin, in step S2, the material components are as follows by weight: 2-3 parts heat-resistant agent, 4-5 parts stabilizer, 2-4 parts softener, 65-75 parts oil, and 75-85 parts polyvinyl chloride paste resin. The heat-resistant agent is R39, the stabilizer is 1934, the softener is 2050, the oil is dibutyl phthalate oil, and the polyvinyl chloride paste resin is a dispersion of a paste-forming PVC powder in a non-volatile plasticizer. The heat-resistant agent improves the material's heat resistance, ensuring that the elastic surface layer 3 can bond integrally with the edge of the extension 13 during rotational molding; the stabilizer enhances the material's stability; and the softener softens the material, ensuring the resulting elastic foam layer 4 is elastic.

[0061] In this invention, to ensure a reliable connection between the handheld component 2 and the inner support body 1, the inner support body 1 has a downward-facing assembly cavity 12, and the handheld component 2 has a hollow structure. Limiting blocks 22 are provided at both ends of the handheld component 2, and each limiting block 22 has a connecting post 21 on its free end face. Each connecting post 21 has a communicating opening 211 at its free end that connects to the filling chamber 5, allowing the elastic foam filler to enter the handheld component 2 through the communicating opening 211. The cavity wall of the assembly cavity 12 has insertion holes that mate with the connecting posts 21. 121 and a limiting groove 122 that cooperates with the limiting block 22; in step S3, the specific steps of installing the handheld part 2 onto the inner support body 1 are as follows: insert the plug pins 21 at both ends of the handheld part 2 into the plug holes 121 of the cavity wall of the assembly cavity 12, and make the limiting block 22 of the handheld part 2 hold in the limiting groove 122 of the cavity wall of the assembly cavity 12; at the same time, when the elastic foam filler is injected into the filling chamber 5 through the injection opening 11, the elastic foam filler can enter the interior of the handheld part 2, so that the interior of the handheld part 2 and the filling chamber 5 can form an integral elastic foam layer 4.

[0062] The technical solution of the present invention will be further described and illustrated below with reference to some specific embodiments:

[0063] Example 1

[0064] The present invention discloses a method for producing a boxing target 100, comprising the following steps:

[0065] Step S1: Pre-manufacture the inner support body 1 and the handheld part 2. The inner support body 1 is provided with an injection opening 11. The inner support body 1 is integrally formed by injection molding using an injection mold. The handheld part 2 is integrally formed by blow molding using a blow molding mold.

[0066] Step S2: Place the inner support body 1 into the rotational molding mold, add material components into the rotational molding mold, and form an elastic surface layer 3 on the outside of the inner support body 1 through the rotational molding process, so that a filling chamber 5 is formed between the inner support body 1 and the elastic surface layer 3, and the filling chamber 5 is connected to the injection opening 11.

[0067] In step S2, the material components are as follows by weight: 2 parts heat-resistant agent, 4 parts stabilizer, 2 parts softener, 65 parts oil, and 75 parts polyvinyl chloride paste resin. The heat-resistant agent used is R39, the stabilizer used is 1934, the softener used is 2050, and the oil is dibutyl phthalate. When the elastic surface layer 3 is rotomolded, the molding temperature of the rotomolding mold is 260°C, and the rotation speed of the rotomolding mold is 1400 revolutions per hour. In this embodiment 1, because the amount of oil and polyvinyl chloride paste resin is relatively small, the amount of heat-resistant agent, stabilizer, and softener is also relatively small. At the same time, the molding temperature of the rotomolding mold is relatively low, and the time of the entire molding process is relatively long.

[0068] Step S3: Insert the plug pins 21 at both ends of the handpiece 2 into the plug holes 121 on the cavity wall of the assembly cavity 12, and make the limiting block 22 of the handpiece 2 hold in the limiting groove 122 on the cavity wall of the assembly cavity 12; inject elastic foam filler into the filling chamber 5 through the injection opening 11, so that the elastic foam filler foams and forms an elastic foam layer 4 in the filling chamber 5 and the handpiece 2.

[0069] Example 2

[0070] The present invention discloses a method for producing a boxing target 100, comprising the following steps:

[0071] Step S1: Pre-manufacture the inner support body 1 and the handheld part 2. The inner support body 1 is provided with an injection opening 11. The inner support body 1 is integrally formed by injection molding using an injection mold. The handheld part 2 is integrally formed by blow molding using a blow molding mold.

[0072] Step S2: Place the inner support body 1 into the rotational molding mold, add material components into the rotational molding mold, and form an elastic surface layer 3 on the outside of the inner support body 1 through the rotational molding process, so that a filling chamber 5 is formed between the inner support body 1 and the elastic surface layer 3, and the filling chamber 5 is connected to the injection opening 11.

[0073] In step S2, the material components are as follows by weight: 2.5 parts heat-resistant agent, 4.5 parts stabilizer, 3 parts softener, 70 parts oil, and 80 parts polyvinyl chloride paste resin. The heat-resistant agent used is R39, the stabilizer is 1934, the softener is 2050, and the oil is dibutyl phthalate. When the elastic surface layer 3 is rotomolded, the molding temperature of the rotomolding mold is 330°C, and the rotation speed of the rotomolding mold is 1500 revolutions per hour. In this embodiment 2, compared with embodiment 1, because the amount of oil and polyvinyl chloride paste resin has increased, the amount of heat-resistant agent, stabilizer, and softener has also increased accordingly. At the same time, the molding temperature of the rotomolding mold has also increased, so the time of the entire molding process will be shortened.

[0074] Step S3: Insert the plug pins 21 at both ends of the handpiece 2 into the plug holes 121 on the cavity wall of the assembly cavity 12, and make the limiting block 22 of the handpiece 2 hold in the limiting groove 122 on the cavity wall of the assembly cavity 12; inject elastic foam filler into the filling chamber 5 through the injection opening 11, so that the elastic foam filler foams and forms an elastic foam layer 4 in the filling chamber 5 and the handpiece 2.

[0075] Example 3

[0076] The present invention discloses a method for producing a boxing target 100, comprising the following steps:

[0077] Step S1: Pre-manufacture the inner support body 1 and the handheld part 2. The inner support body 1 is provided with an injection opening 11. The inner support body 1 is integrally formed by injection molding using an injection mold. The handheld part 2 is integrally formed by blow molding using a blow molding mold.

[0078] Step S2: Place the inner support body 1 into the rotational molding mold, add material components into the rotational molding mold, and form an elastic surface layer 3 on the outside of the inner support body 1 through the rotational molding process, so that a filling chamber 5 is formed between the inner support body 1 and the elastic surface layer 3, and the filling chamber 5 is connected to the injection opening 11.

[0079] In step S2, the material components are as follows by weight: 3 parts heat-resistant agent, 5 parts stabilizer, 4 parts softener, 75 parts oil, and 85 parts polyvinyl chloride paste resin. The heat-resistant agent used is R39, the stabilizer is 1934, the softener is 2050, and the oil is dibutyl phthalate. When the elastic surface layer 3 is rotomolded, the molding temperature of the rotomolding mold is 390°C, and the rotational speed of the rotomolding mold is 1600 revolutions per hour. In this embodiment 3, compared to embodiment 1, because the amount of oil and polyvinyl chloride paste resin has increased, the amount of heat-resistant agent, stabilizer, and softener also needs to be increased accordingly. Simultaneously, the molding temperature of the rotomolding mold has increased, thus shortening the overall molding time.

[0080] Step S3: Insert the plug pins 21 at both ends of the handpiece 2 into the plug holes 121 on the cavity wall of the assembly cavity 12, and make the limiting block 22 of the handpiece 2 hold in the limiting groove 122 on the cavity wall of the assembly cavity 12; inject elastic foam filler into the filling chamber 5 through the injection opening 11, so that the elastic foam filler foams and forms an elastic foam layer 4 in the filling chamber 5 and the handpiece 2.

[0081] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A boxing target, characterized in that: It includes an inner support body, a handheld component, an elastic surface layer, and an elastic foam layer; the elastic surface layer is formed on the outside of the inner support body by rotational molding, and a filling cavity is formed between the inner support body and the elastic surface layer; The inner support body is provided with an injection opening communicating with the filling chamber. The elastic foam layer is foamed and formed in the filling chamber by elastic foam filler, and the elastic foam filler is injected into the filling chamber through the injection opening. The handheld component is installed on the inner support body. Both ends of the handheld component are provided with insertion posts. The handheld component has a hollow structure. The free end of each insertion post has a communicating opening communicating with the filling chamber. The filling chamber and the interior of the handheld component are integrally formed into an elastic foam layer by elastic foam filler. The inner support body has an assembly cavity with the opening facing downward. The cavity wall of the assembly cavity is provided with insertion holes. The insertion posts are inserted into the elastic foam layer through the insertion holes. The inner support body is integrally formed by injection molding, and the handheld component is integrally formed by blow molding.

2. A boxing target as described in claim 1, characterized in that: The material composition of the elastic surface layer is as follows by weight: 2-3 parts heat resistant agent, 4-5 parts stabilizer, 2-4 parts softener, 65-75 parts oil, and 75-85 parts polyvinyl chloride paste resin.

3. A boxing target as described in claim 1, characterized in that: Both ends of the handheld component are provided with limit blocks, and the plug-in post is provided on the free end face of the limit block; the cavity wall of the assembly cavity forms a limit groove, the limit groove extends downward to the bottom of the inner support body, and the limit block is assembled in the limit groove.

4. A boxing target as described in claim 1, characterized in that: The lower edge of the inner support body extends outward to form an extension portion, the edge of the extension portion is sealed and connected to the elastic surface layer, and the injection opening is provided on the extension portion.

5. A boxing target as described in claim 1, characterized in that: The elastic surface layer is made of human face skin, and the inner support body is made of human skull structure.

6. A method for producing a boxing target, characterized in that: Includes the following steps: Step S1: Pre-manufacture the inner support body and the handheld component, wherein the inner support body is provided with an injection opening; Step S2: Place the inner support body into the rotational molding mold, add material components into the rotational molding mold, and form an elastic surface layer on the outside of the inner support body through the rotational molding process, so that a filling cavity is formed between the inner support body and the elastic surface layer, and the filling cavity is connected to the injection opening. Step S3: Install the handheld component onto the inner support body, and inject elastic foam filler into the filling cavity through the injection opening, so that the elastic foam filler foams and forms an elastic foam layer in the filling cavity.

7. A method for producing a boxing target as described in claim 6, characterized in that: In step S2, the molding temperature of the rotational molding die is 260℃-390℃, and the rotational speed of the rotational molding die is 1400-1600 revolutions per hour. The material components are as follows by weight: 2-3 parts heat resistant agent, 4-5 parts stabilizer, 2-4 parts softener, 65-75 parts oil, and 75-85 parts polyvinyl chloride paste resin.

Images