阅读说明：本技术 一种玩具活动关节的加工工艺 (Processing technology of toy movable joint ) 是由 罗立军 于 2021-08-19 设计创作，主要内容包括：本发明涉及玩具技术领域,更具体地说,它涉及一种玩具活动关节的加工工艺,所述玩具活动关节由两个以上的部件构成,各所述部件相互配合使其中两个部件可相对转动、且能够阻止该两个部件松脱；各所述部件均为一体注塑成型结构,且构成各部件材料的熔点各不相同,各部件注塑成型的顺序按熔点由高到底依次进行,且后注塑成型的部件是在前一注塑成型部件的基础上二次注塑而成；其中,相邻两次注塑成型的材料最低熔融温度相差20-300度。根据本发明的方案,由于玩具活动关节是通过多次注塑成型的方式进行加工,相对于现有技术,无需人工进行组装,通过注塑模具同一批次加工出来的产品,其松紧度的一致性较好。(The invention relates to the technical field of toys, in particular to a processing technology of a movable joint of a toy, wherein the movable joint of the toy is composed of more than two parts, and the parts are matched with each other to ensure that the two parts can relatively rotate and can be prevented from loosening; each part is of an integral injection molding structure, the melting points of materials forming each part are different, the injection molding sequence of each part is carried out in sequence from high to low according to the melting points, and the injection molded part is formed by secondary injection molding on the basis of the previous injection molded part; wherein, the difference of the lowest melting temperature of the materials of two adjacent injection molding is 20-300 degrees. According to the scheme of the invention, as the movable joints of the toy are processed in a multi-time injection molding mode, compared with the prior art, manual assembly is not needed, and the consistency of the tightness of products processed in the same batch through an injection mold is better.)

1. A processing technology of a toy movable joint is provided, wherein the toy movable joint is composed of more than two parts, and the parts are mutually matched to enable the two parts to relatively rotate and prevent the two parts from loosening; it is characterized in that the preparation method is characterized in that,

each part is of an integral injection molding structure, the melting points of materials forming each part are different, the injection molding sequence of each part is carried out in sequence from high to low according to the melting points, and the injection molded part is formed by secondary injection molding on the basis of the previous injection molded part; wherein, the difference of the lowest melting temperature of the materials of two adjacent injection molding is 20-300 degrees.

2. The process for manufacturing a movable joint of a toy according to claim 1,

the lowest melting temperatures of the materials of two adjacent injection molding processes are different by 160 degrees.

3. The process for manufacturing a movable joint of a toy according to claim 1 or 2,

each part comprises a first part (22) and a second part (21), the first part (22) is provided with a retaining structure, and the first part (22) and the second part (21) are matched with each other to rotate and are prevented from being released through the retaining structure.

4. The process for manufacturing a movable joint of a toy according to claim 3,

the first component (22) comprises a first rotating shaft (1), a first half-ball head (2), a connecting shaft (5) and a shaft cap (6), the first half-ball head (2) is arranged at one end of the first rotating shaft (1), the connecting shaft (5) is arranged on the first half-ball head (2), the shaft cap (6) is arranged at one end, away from the first half-ball head (2), of the connecting shaft (5), and the anti-falling structure is formed between the first half-ball head and the connecting shaft (5);

the second part (21) comprises a second rotating shaft (3) and a second hemispherical head (4), the second hemispherical head (4) is arranged at one end of the second rotating shaft (3), a through hole (32) is formed in the second hemispherical head (4), and a clamping groove (33) is formed in one end of the through hole (32);

wherein, first half bulb (2) and second hemisphere head (4) are used for the lock to be in the same place and form the spherical structure, and connecting axle (5) are used for passing via hole (32), and through axle cap (6) and draw-in groove (33) joint, wherein, first half bulb (2) and second hemisphere head (4) both are used for winding connecting axle (5) rotate to drive first pivot (1) and second pivot (3) both open relatively or closed.

5. The process for manufacturing a movable joint of a toy according to claim 4,

the first half-ball head (2) is positioned on one side of the end part of the first rotating shaft (1), a first guide groove (11) is formed between the first half-ball head and the first rotating shaft, the first guide groove (11) has the shape consistent with the shape of one end, deviating from the second rotating shaft (3), of the second half-ball head (4), and the first half-ball head and the second half-ball head are in sliding fit;

and/or the second hemispherical head (4) is positioned on one side of the end part of the second rotating shaft (3), a second guide groove (31) is formed between the second hemispherical head and the second rotating shaft, the second guide groove (31) has the shape consistent with the shape of one end, deviating from the first rotating shaft (1), of the first hemispherical head (2), and the second hemispherical head and the first rotating shaft are in sliding fit.

6. The process for manufacturing a movable joint of a toy according to claim 4 or 5,

an annular clamping table serving as the anti-falling structure is formed between the shaft cap (6) and the connecting shaft (5), and the clamping groove (33) is an annular clamping groove (33) matched with the annular clamping table.

7. The process for manufacturing a movable joint of a toy according to claim 3,

the first component (22) comprises a ferrule (221) and a third connecting shaft (222), the third connecting shaft (222) is arranged on one side of the ferrule (221), and an inner hole of the ferrule (221) is an annular semi-spherical groove (2201) to form the anti-falling structure;

the second component (21) comprises a ball head (211), a first connecting shaft (212) and a second connecting shaft (213), wherein the first connecting shaft (212) and the second connecting shaft (213) are coaxially arranged and are arranged on two opposite sides of the ball head (211);

the ferrule (221) is sleeved on the ball head (211) through the hemispherical groove (2201), and the ferrule and the ball head are in running fit.

8. The process for manufacturing a movable joint of a toy according to claim 7,

the bottom of the hemispherical groove (2201) is 2-20 mm deep from the outer edge.

9. The process for manufacturing a movable joint of a toy according to claim 7 or 8,

a first boss (214) and a second boss (215) are respectively arranged on two opposite sides of the ball head (211), the first connecting shaft (212) is arranged on the first boss (214) and forms a first step between the first boss and the second boss, and the second connecting shaft (213) is arranged on the second boss (215) and forms a second step between the second boss and the second boss;

wherein the first abutment (214) is adapted to abut against the collar (221) when the first part (22) is rotated into a first extreme position, and the second abutment (215) is adapted to abut against the collar (221) when the first part (22) is rotated into a second extreme position.

10. The process for manufacturing a movable joint of a toy according to claim 7 or 8,

the first connecting shaft (212) is provided with a plurality of first character table notches which are sequentially spaced along the circumferential direction;

and/or a plurality of second character table notches which are sequentially spaced are arranged on the second connecting shaft (213) along the circumferential direction;

and/or a plurality of third character table notches which are sequentially spaced are arranged on the third connecting shaft (222) along the circumferential direction.

Technical Field

The invention relates to the technical field of toys, in particular to a processing technology of a movable joint of a toy.

Background

With the increasing development of economy and science, the requirements of people on model toys are also increased. The model toys on the existing market have various styles, beautiful appearance and more elaborate making.

The existing model toy needs a plurality of movable joints, and the model toy can be more simulated by doing more movable joints in a limited space. Due to the space limitation, the movable joint volume of the model toy is smaller and smaller. Wherein, the stability of the joint when firm in connection nature and activity is just also worse for the smaller, generally adopts complicated structure collocation preparation precision to solve this problem at present to adopt the manual work to assemble, but can lead to the assembly degree of difficulty of freely movable joint to increase like this, and the uniformity of each freely movable joint elasticity is also not good enough after the equipment moreover, so need solve to this kind of condition urgently.

Disclosure of Invention

In view of this, the invention provides a processing technology of a toy movable joint, mainly aiming at solving the technical problems that: how to improve the consistency of the tightness of each movable joint.

In order to achieve the purpose, the invention mainly provides the following technical scheme:

the embodiment of the invention provides a processing technology of a movable joint of a toy, wherein the movable joint of the toy is composed of more than two parts, and the parts are matched with each other to enable the two parts to rotate relatively and prevent the two parts from loosening; each part is of an integral injection molding structure, the melting points of materials forming each part are different, the injection molding sequence of each part is carried out in sequence from high to low according to the melting points, and the injection molded part is formed by secondary injection molding on the basis of the previous injection molded part; wherein, the difference of the lowest melting temperature of the materials of two adjacent injection molding is 20-300 degrees.

Optionally, the lowest melting temperatures of the two adjacent injection-molded materials are different by 160 degrees.

Optionally, each of the parts includes a first part and a second part, the first part has a separation preventing structure, and the first part and the second part are used for cooperating with each other to rotate and preventing the first part and the second part from being separated by the separation preventing structure.

Optionally, the first component includes a first rotating shaft, a first hemispherical head, a connecting shaft and a shaft cap, the first hemispherical head is disposed at one end of the first rotating shaft, the connecting shaft is disposed on the first hemispherical head, and the shaft cap is disposed at one end of the connecting shaft away from the first hemispherical head and forms the anti-falling structure therebetween; the second part comprises a second rotating shaft and a second hemispherical head, the second hemispherical head is arranged at one end of the second rotating shaft, a through hole is formed in the second hemispherical head, and a clamping groove is formed in one end of the through hole; wherein, first hemisphere head and second hemisphere head both are used for the lock to be in the same place and form the spherical structure, and the connecting axle is used for passing the via hole, and through axle cap and draw-in groove joint, wherein, first hemisphere head and second hemisphere head both are used for winding the connecting axle rotates to drive first pivot and second pivot both open relatively or closed.

Optionally, the first hemispherical head is located at one side of the end of the first rotating shaft, and a first guide groove is formed between the first hemispherical head and the first rotating shaft, and the first guide groove has a shape consistent with one end of the second hemispherical head departing from the second rotating shaft, and the first guide groove and the second hemispherical head are in sliding fit;

and/or the second hemispherical head is positioned on one side of the end part of the second rotating shaft, a second guide groove is formed between the second hemispherical head and the second rotating shaft, the second guide groove has the shape consistent with one end, deviating from the first rotating shaft, of the first hemispherical head, and the second hemispherical head and the first rotating shaft are in sliding fit.

Optionally, an annular clamping table serving as the anti-falling structure is formed between the shaft cap and the connecting shaft, and the clamping groove is an annular clamping groove matched with the annular clamping table.

Optionally, the first component includes a ferrule and a third connecting shaft, the third connecting shaft is disposed on one side of the ferrule, and an inner hole of the ferrule is an annular hemispherical groove to form the anti-disengaging structure; the second component comprises a bulb, a first connecting shaft and a second connecting shaft, wherein the first connecting shaft and the second connecting shaft are coaxially arranged and are arranged on two opposite sides of the bulb; wherein, the ferrule is sleeved on the ball head through the hemispherical groove, and the ferrule and the ball head are in running fit.

Optionally, the bottom of the hemispherical groove is 2-20 mm deep from the outer edge of the hemispherical groove.

Optionally, a first boss and a second boss are respectively arranged on two opposite sides of the ball head, the first connecting shaft is arranged on the first boss, a first step is formed between the first boss and the first boss, and the second connecting shaft is arranged on the second boss, and a second step is formed between the second boss and the second boss; the first boss is used for abutting against the ferrule when the first component rotates to a first limit position, and the second boss is used for abutting against the ferrule when the first component rotates to a second limit position.

Optionally, a plurality of first character table notches which are sequentially spaced are arranged on the first connecting shaft along the circumferential direction; and/or a plurality of second character table notches which are sequentially spaced are arranged on the second connecting shaft along the circumferential direction; and/or the third connecting shaft is provided with a plurality of sequentially spaced third character table notches along the circumferential direction.

By means of the technical scheme, the processing technology of the movable joint of the toy has the following beneficial effects:

because toy freely movable joint is processed through the mode of many times injection moulding, compared with the prior art, need not the manual work and assemble, the product of processing out through injection mold same batch, its uniformity of elasticity is better. In addition, the movable joint processed by the technical scheme can be processed to be smaller so as to save space. Each part is assembled in a multi-time injection molding mode, and the connection firmness is good. The tightness of the movable part of the joint is derived from the injection pressure and the shrinkage rate of different materials, is irrelevant to the assembly precision, completely solves the problem of consistency of the tightness of the joint, has small structure, keeps high damping, and does not loosen after a user plays for many times.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a movable joint of a toy according to an embodiment of the present invention, showing a first shaft and a second shaft that are opened relative to each other;

FIG. 2 is a schematic sectional view of the movable joint of the toy of FIG. 1;

FIG. 3 is a schematic view of the movable joint of the toy of FIG. 1 with the first and second shafts closed at an angle relative to each other;

FIG. 4 is a schematic diagram of another toy movable joint configuration according to an embodiment of the present invention;

FIG. 5 is a schematic view of the first part of the movable joint of the toy of FIG. 4 rotated to an intermediate position on the ball head;

FIG. 6 is a schematic view of the first part of the movable joint of the toy of FIG. 4 rotated to a first extreme position of the ball head;

figure 7 is a schematic view of the first part of the movable joint of the toy of figure 4 rotated to a second extreme position of the ball head.

Reference numerals: 1. a first rotating shaft; 2. a first half bulb; 3. a second rotating shaft; 4. a second hemispherical head; 5. a connecting shaft; 6. a shaft cap; 11. a first guide groove; 31. a second guide groove; 32. a via hole; 33. a card slot; 101. a first annular projection; 102. a first stage is omitted; 301. a second annular projection; 302. a second stage is omitted; 21. a second component; 22. a first member; 211. a ball head; 212. a first connecting shaft; 213. a second connecting shaft; 214. a first boss; 215. a second boss; 221. a ferrule; 222. a third connecting shaft; 223. a third boss; 2101. a first sub-stage gap; 2102. a second sub-stage gap; 2103. a third sub-stage gap; 2201. a semi-spherical groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In one embodiment of the invention, the toy movable joint is formed by more than two parts, and the parts are matched with each other to enable the two parts to rotate relatively and prevent the two parts from loosening. Wherein, each part is an integrative injection moulding structure, and the melting point of the material that constitutes each part is different. Specifically, each member is made of one material, and the material of each member is different, and the melting point of the material of each member is different.

During processing, the injection molding of each part is carried out in sequence from high to low according to the melting point, and the injection molded part after injection molding is formed by secondary injection molding on the basis of the injection molded part before injection molding; wherein, the difference of the lowest melting temperature of the materials formed by two adjacent injection molding is 20-300 degrees, and preferably, the difference of the lowest melting temperature of the materials formed by two adjacent injection molding is 160 degrees.

In the above example, a plurality of materials are synthesized into an integral component which can move but can not be disassembled between different materials by selecting a plurality of injection molding materials with wear resistance and injection molding with the lowest temperature difference of 20-300 ℃, injecting and molding a high-temperature material component, and then putting the high-temperature material component into a mold to inject and mold a low-temperature material component.

Because toy freely movable joint is processed through the mode of many times injection moulding, compared with the prior art, need not the manual work and assemble, the product of processing out through injection mold same batch, its uniformity of elasticity is better. In addition, the movable joint processed by the technical scheme can be processed to be smaller so as to save space. Each part is assembled in a multi-time injection molding mode, and the connection firmness is good. The tightness of the movable part of the joint is derived from the injection pressure and the shrinkage rate of different materials, is irrelevant to the assembly precision, completely solves the problem of consistency of the tightness of the joint, has small structure, keeps high damping, and does not loosen after a user plays for many times.

In a specific application example, the aforementioned components include a first component and a second component, the first component has a retaining structure, the retaining structure is a part of the structure of the first component, and the retaining structure and the first component are both of an integrated structure. The first part and the second part are used for mutually matching to rotate and preventing the first part and the second part from being loosened through the anti-disengaging structure. Specifically, the movable joint of the toy may be composed of only a first part and a second part, and the first part and the second part are rotatably connected and prevented from being released by the anti-release structure.

In the above example, the movable joint of the toy is only composed of the first part and the second part, so that the structure is relatively simple, the movable joint of the toy can be formed by injection molding for two times, and the movable joint of the toy is relatively convenient to process.

In a specific application example, as shown in fig. 1 and 2, the aforementioned first component may include a first rotating shaft 1, a first half-ball head 2, a connecting shaft 5 and a shaft cap 6. The first component is integrally injection molded from a single material. The first half ball head 2 is arranged at one end of the first rotating shaft 1, the connecting shaft 5 is arranged on the first half ball head 2, and the connecting shaft 5 and the first rotating shaft 1 can be vertically arranged. The shaft cap 6 is arranged at one end of the connecting shaft 5, which is far away from the first half-ball head 2, and the anti-falling structure is formed between the two ends. The second part comprises a second rotating shaft 3 and a second hemispherical head 4, and is also integrally formed by injection molding from a single material. The second hemispherical head 4 is arranged at one end of the second rotating shaft 3, a through hole 32 is arranged on the second hemispherical head 4, and a clamping groove 33 is arranged at one end of the through hole 32. The first half-ball head 2 and the second half-ball head 4 are used for being buckled together and forming a spherical structure, the connecting shaft 5 is used for penetrating through the through hole 32 and being clamped with the clamping groove 33 through the shaft cap 6, wherein as shown in fig. 3, the first half-ball head 2 and the second half-ball head 4 are used for rotating around the connecting shaft 5 so as to drive the first rotating shaft 1 and the second rotating shaft 3 to be opened or closed relatively. For example, when the trunk and the arms of the human-shaped model toy are connected by the above-described axis joints, the arms can be opened and closed with respect to the trunk, and the arms can be twisted with respect to the trunk.

Preferably, the axes of the first rotating shaft 1 and the second rotating shaft 3 intersect, and when the first rotating shaft 1 and the second rotating shaft 3 are fully opened, the axes of the first rotating shaft 1 and the second rotating shaft 3 are overlapped. When the movable joint is applied to the human-shaped model toy, the flexion and extension of joints such as elbows, wrists and the like can be simulated.

As shown in fig. 2, the first half-ball head 2 may be located at one side of the end of the first rotating shaft 1, and a first guide groove 11 is formed between the first half-ball head and the first rotating shaft, and the first guide groove 11 has a shape corresponding to an end of the second half-ball head 4 away from the second rotating shaft 3, and the first half-ball head and the second half-ball head are in sliding fit. The first guide groove 11 can guide and limit the rotation of the second hemispherical head 4, so as to improve the rotational stability of the second hemispherical head 4.

As shown in fig. 2, the second hemispherical head 4 is located at one side of the end of the second rotating shaft 3, and a second guiding groove 31 is formed between the second hemispherical head and the second rotating shaft, and the second guiding groove 31 has an outline shape consistent with one end of the first hemispherical head 2 departing from the first rotating shaft 1, and the second hemispherical head and the first rotating shaft are in sliding fit. Wherein, the second guide way 31 can be to the rotation direction and spacing of first half bulb 2 to improve the rotational stability of first half bulb 2.

In a specific application example, an annular clamping table is formed between the shaft cap 6 and the connecting shaft 5 as the anti-falling structure, and the connecting shaft 5 is arranged in the middle of one end of the shaft cap 6 and has an outer diameter smaller than that of the end of the shaft cap 6. Aforementioned draw-in groove 33 is ring slot 33 with annular card platform looks adaptation, and when annular card platform and ring slot 33 joint like this, the joint area is great, can prevent to loosen and take off.

As shown in fig. 1, an end of the first rotating shaft 1 away from the first hemispherical head 2 may have a first notch 102, and when the first rotating shaft 1 is installed in the shaft hole, the first notch 102 may reduce a contact area between the first rotating shaft 1 and the shaft hole, and reduce a rotation resistance of the first rotating shaft 1. Similarly, the second end of the second rotating shaft 3 away from the second hemispherical head 4 may have a second notch 302, and when the second rotating shaft 3 is installed in the shaft hole, the second notch 302 may reduce the contact area between the second rotating shaft 3 and the shaft hole, and reduce the rotation resistance of the second rotating shaft 3.

As shown in fig. 1, a side portion of the first rotating shaft 1 facing away from one end of the first hemispherical head 2 may have a first annular protrusion 101, and the first rotating shaft 1 may be clamped in the shaft hole by the first annular protrusion 101 to prevent the first rotating shaft 1 from loosening from the shaft hole. Similarly, the side of the second rotating shaft 3 away from the end of the second hemispherical head 4 may have a second annular protrusion 301, and the second rotating shaft 3 may be clamped in the shaft hole by the second annular protrusion 301, so as to prevent the second rotating shaft 3 from loosening from the shaft hole.

In another specific application example, as shown in fig. 4 to 7, the first component 22 may include the ferrule 221 and the third connecting shaft 222, and the first component 22 is integrally injection-molded from a single material. The third connecting shaft 222 is disposed on one side of the ferrule 221, and an inner hole of the ferrule 221 is a semi-spherical groove 2201 in an annular shape to form the above-mentioned anti-falling structure. The second member 21 includes a ball head 211, a first connecting shaft 212 and a second connecting shaft 213, and the second member 21 is also integrally injection molded from a single material. The first connecting shaft 212 and the second connecting shaft 213 are coaxially arranged and are arranged on two opposite sides of the ball head 211; wherein, the ferrule 221 is sleeved on the ball 211 through the hemispherical groove 2201, and the two are in running fit.

As shown in fig. 4, the first boss 214 and the second boss 215 are respectively disposed on two opposite sides of the ball head 211, and the first boss 214 and the second boss 215 may be integrally formed on the ball head 211. The first connecting shaft 212 is disposed on the first boss 214, and a first step is formed between the first connecting shaft 212 and the first boss 214, and the first connecting shaft 212 and the first boss 214 are also integrally formed. The second connecting shaft 213 is disposed on the second boss 215, and a second step is formed between the second connecting shaft 213 and the second boss 215, and the second connecting shaft 213 and the second boss 215 are also integrally formed. Wherein the first abutment 214 is adapted to abut against the collar 221 when the first part 22 is rotated to a first extreme position, as shown in fig. 6, and wherein the second abutment 215 is adapted to abut against the collar 221 when the first part 22 is rotated to a second extreme position, as shown in fig. 7.

In the above example, the first boss 214 and the second boss 215 are arranged, so that on one hand, the connection strength between the first connecting shaft 212 and the ball head 211 and the connection strength between the second connecting shaft 213 and the ball head 211 can be increased, on the other hand, the rotation angle of the first component 22 can be limited, and the first connecting shaft 212 and the second connecting shaft 213 can be prevented from being knocked by the first component 22 due to the overlarge rotation angle.

As shown in fig. 4, one side of the collar 221 may be provided with a third boss 223, and the third boss 223 may be integrally formed on the collar 221. The third connecting shaft 222 is disposed on the third boss 223, and a third step is formed between the third connecting shaft 222 and the third boss 223, and the third connecting shaft 222 and the third boss 223 are also of an integrally formed structure. Wherein, the third boss 223 can increase the connecting strength between the third connecting shaft 222 and the ferrule 221.

As shown in fig. 4, the first connecting shaft 212 may be provided with a plurality of first sub-steps 2101 spaced in sequence in the circumferential direction, and in a specific application example, the number of the first sub-steps 2101 may be four and the first sub-steps 2101 may be uniformly spaced in the circumferential direction of the first connecting shaft 212. The first sub-step 2101 can reduce the contact area between the first connecting shaft 212 and the corresponding shaft hole, and reduce the frictional resistance of the rotation of the first connecting shaft 212.

As shown in fig. 4, the second connecting shaft 213 may be provided with a plurality of second sub-segments 2102 spaced in sequence along the circumferential direction, and in a specific application example, the number of the second sub-segments 2102 may be four, and the second sub-segments 2102 may be uniformly spaced along the circumferential direction of the second connecting shaft 213. The second sub-platform notches 2102 are arranged, so that the contact area between the second connecting shaft 213 and the corresponding shaft hole can be reduced, and the rotating friction resistance of the second connecting shaft 213 can be reduced.

As shown in fig. 4, the third connecting shaft 222 may be provided with a plurality of sequentially spaced third sub-platform segments 2103 along the circumferential direction, and in a specific application example, the number of the third sub-platform segments 2103 may be four and the third sub-platform segments are uniformly spaced along the circumferential direction of the third connecting shaft 222. The contact area between the third connecting shaft 222 and the corresponding shaft hole can be reduced through the third sub-stage 2103, and the rotating friction resistance of the third connecting shaft 222 is reduced.

As shown in fig. 5, the bottom of the hemispherical groove 2201 has a depth L of 2-20 mm from the outer edge thereof, and preferably, the bottom of the hemispherical groove 2201 has a depth L of 5 mm from the outer edge thereof.

In the above example, by setting the depth L of the bottom of the hemispherical groove 2201 from the outer edge thereof to 2 to 20 mm, the depth L is not so large as to increase the frictional resistance between the hemispherical groove 2201 and the ball 211, and is also so small as to allow the ball 211 to easily come out of the hemispherical groove 2201.

The working principle and preferred embodiments of the present invention are described below.

The invention provides a processing technology of a toy movable joint, which selects a plurality of injection molding materials with wear resistance and injection molding temperature difference of 20-300 ℃, firstly forms a high-temperature material structure part by injection molding, and then places the high-temperature material structure part into a mold to form a low-temperature material structure part by injection molding, so that the plurality of materials are synthesized into an integral structure which can move but can not be disassembled among different materials.

Here, it should be noted that: in the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.