Forming injection molding equipment for spherical soft toy production

Abstract

The invention discloses molding injection molding equipment for spherical soft toy production, and relates to the technical field of injection molding machines, the molding injection molding equipment comprises a shell, an injection molding machine body is arranged in the shell, an injection system is fixedly mounted at one end of the top of the injection molding machine body, and a control device is fixedly mounted on the upper surface of the injection molding machine body; a mold closing system is arranged in the middle of the upper surface of the injection molding machine body. A positioning rod is slidably connected into the mold closing system. Through the arrangement of the extrusion rod, after the spherical toy is formed, the demolding operation of the spherical toy can be completed in an extrusion mode, the extrusion rod can be controlled by the electric control telescopic rod to be directly pushed for demolding, traditional manual operation is replaced, the production efficiency is greatly improved, in addition, the design of the extrusion rod can ensure that force uniformly acts on the surface of a sphere during demolding, and the demolding quality is improved. Deformation or damage caused by uneven local stress is avoided, meanwhile, the adhesion problem between the mold and a finished product can be reduced, and the spherical toy mold is particularly suitable for spherical toys with complex shapes or high precision requirements.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to a molding injection molding device for producing spherical soft toys. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity; In the prior art, after the spherical toy is injection molded, it is necessary to demould the spherical toy. If force is applied only through the central ejector during demoulding, the sphere will be deformed into an ellipse due to excessive local force. This is because the single action point of the central ejector causes the sphere to be subjected to extremely high pressure in the ejector contact area, while other areas lack support force. The local concentrated force will produce uneven stress distribution inside the sphere, causing plastic deformation or elastic yield of the material near the contact point, thereby causing the spherical toy to be deformed, thereby affecting the quality of the finished spherical toy. To solve the above problems, we propose a molding injection molding equipment for producing spherical soft toys. Summary of the invention

[0003] Technical issues solved In view of this, and in view of the deficiencies in the prior art, the present invention provides a molding injection molding device for producing spherical soft toys to solve the problems raised in the above background technology.

[0004] Technical Solution

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a molding injection molding device for producing spherical soft toys, comprising a shell, an injection molding machine body is arranged inside the shell, an injection system is fixedly installed at one end of the top of the injection molding machine body, a control device is fixedly installed on the upper surface of the injection molding machine body, a clamping system is arranged in the middle of the upper surface of the injection molding machine body, a positioning rod is slidably connected inside the clamping system, a limit block is fixedly installed on the outer surface of one end of the positioning rod away from the clamping system, an electric control telescopic rod is fixedly connected to the limit block, and the output shaft of the electric control telescopic rod passes through and extends to the outside of the limit block, and also includes an injection molding component arranged in the clamping system; The injection molding assembly includes a first mold and a second mold disposed inside the mold clamping system. The first mold and the second mold are attached to each other, and hemispherical injection cavities are respectively formed inside the first mold and the second mold. The two hemispheres together form a spherical injection cavity. A through groove is formed through the center of the first mold, and a pressing rod is slidably connected to the center inside the first mold. On the outer surface of one end of the pressing rod, a first rack is symmetrically slidably connected. On the outer surface of the first rack near the first mold, meshing gears are engaged. On the outer surface of the meshing gear away from the first rack, a second rack is engaged. At the end of the second rack away from the meshing gear, a positioning ring is fixedly connected together. A positioning sleeve is rotatably sleeved on the outer surface of the positioning ring.

[0006] Preferably, a spiral groove is formed on one side inside the positioning sleeve. A slider is slidably connected inside the spiral groove. One end of the slider away from the spiral groove is fixedly connected to a moving ring. On one side of the moving ring, connecting rods are symmetrically fixedly connected. At the end of the connecting rods away from the moving ring, an annular cleaning block is rotatably connected together.

[0007] Preferably, one end of the pressing rod is slidably connected to the through groove at the center of the first mold. The first rack and the second rack on the same side are centrosymmetrically arranged with the center point of the meshing gear as the reference. The meshing gear is rotatably connected to the outer surface of the positioning sleeve. The second rack and the positioning ring are both slidably connected inside the positioning sleeve.

[0008] Preferably, the positioning ring is rotatably connected to the outer surface of the moving ring. The moving ring and the connecting rods are both slidably connected inside the positioning sleeve. The moving ring and the connecting rods are slidably connected inside the positioning sleeve. A rubber piston is provided on the outer surface of the annular cleaning block, and the annular cleaning block fits the inner wall of the through groove formed at the center of the first mold. The annular cleaning block is slidably connected to the outer surface of the pressing rod.

[0009] Preferably, it further includes an auxiliary assembly disposed outside the pressing rod; The auxiliary assembly includes a fixed ring fixedly connected to the outer surface of the pressing rod. On the outer surface of the fixed ring near the first mold, auxiliary round rods are fixedly connected centrosymmetrically with the center of the pressing rod as the reference. A limiting ring is slidably connected to the outer surfaces of the auxiliary round rods together. On the outer surface of the auxiliary round rods near the fixed ring, buffer springs are fixedly connected centrosymmetrically around the center of the pressing rod. On the side of the auxiliary round rods away from the buffer springs, compression springs are fixedly connected in a circumferential array around the center of the pressing rod.

[0010] Preferably, circular holes are formed around the center of the first mold and penetrate through the first mold. The auxiliary round rods are slidably and sealingly connected inside the circular holes. The buffer springs and the compression springs are both sleeved on the outer surfaces of the auxiliary round rods. One end of the buffer spring away from the limiting ring is fixedly connected to the outer surface of the fixed ring.

[0011] Preferably, the ends of the first rack away from the meshing gear are fixedly connected to the outer surface of the fixed ring.

[0012] Preferably, it further includes an air extraction assembly disposed outside the first mold and the second mold; The air extraction assembly includes air cylinders symmetrically and fixedly installed on the outer surfaces of both sides of the first mold. The pistons rods are slidably connected through the interiors of the air cylinders. A positioning spring is sleeved on the outer surface of the piston rod. A connecting air pipe is fixedly communicated with one side of the air cylinder close to the first mold, and an exhaust pipe is fixedly communicated with the outer surface of the air cylinder.

[0013] Preferably, one end of the piston rod penetrates through the air cylinder and extends to the outside of the air cylinder, and the end of the piston rod penetrating out of the air cylinder is fixedly connected to the outer surface of the second mold. The positioning spring is arranged inside the air cylinder. Air channels are penetrated and opened on both sides of the first mold, and the end of the connecting air pipe away from the air cylinder is arranged inside the air channel.

[0014] Beneficial effects

[0015] Compared with the prior art, the present invention provides a molding injection device for producing spherical soft toys, and has the following beneficial effects: Through the arrangement of the extrusion rod, after the spherical toy is formed, the demolding operation of the spherical toy can be completed by extrusion. The extrusion rod can be directly pushed for demolding through an electric control telescopic rod, replacing the traditional manual operation, greatly improving the production efficiency. In addition, the design of the extrusion rod can ensure that the force acts evenly on the surface of the sphere during demolding, avoiding deformation or damage caused by uneven local stress, and at the same time reducing the adhesion problem between the mold and the finished product, especially suitable for spherical toys with complex shapes or high-precision requirements; Through the arrangement of the auxiliary round rod, the limiting ring, the buffer spring and the compression spring, during the process of the extrusion rod extruding the center position of the spherical toy to complete demolding, by synchronously applying pressure to the four corners around the stress point of the spherical toy to assist the spherical toy in demolding, the auxiliary round rod synchronously applies pressure at the four corners, combined with the action of the central extrusion rod, to form a uniform demolding force field, avoiding demolding failure (such as adhesion or jamming) caused by uneven local stress. At the same time, the multi-directional synchronous pressure application can effectively overcome the friction between the mold and the sphere, especially suitable for high-precision or surface-complex spherical toys (such as those with textures, hollow structures, etc.), and the buffer spring and the compression spring can absorb the impact force at the moment of demolding, avoiding damage to the mold or the sphere due to rigid collision, and at the same time reducing the noise and vibration during the operation of the equipment; Through the common arrangement of the extrusion rod and the four auxiliary round rods, during the demolding process of the spherical toy, the auxiliary pressure at the four corners can balance the concentrated force of the central extrusion rod, avoiding deformation or stress concentration of the sphere due to excessive single-point stress, ensuring the roundness and dimensional accuracy of the sphere after demolding. At the same time, the auxiliary round rod applies pressure through multi-point contact, reducing the local extrusion on the surface of the sphere and reducing the risk of scratches or top white; Through the setting of the annular cleaning block, relative rotational friction can be presented with the extrusion rod, so as to clean the extrusion rod and the through groove opened on the first mold. The contact between the annular cleaning block and the extrusion rod can prevent impurities adhered to the outer surface of the extrusion rod during the demolding process, avoiding affecting the demolding of the next spherical toy. At the same time, the continuous contact between the annular cleaning block and the through groove of the first mold can prevent the residues in the through groove of the first mold from entering the surface of the sphere, resulting in defects such as sink marks, flash or insufficient gloss. The real-time cleaning of the annular cleaning block can ensure the cleanliness of the mold cavity and guarantee product consistency; Through the setting of the air cylinder and the piston rod, the spherical toy is fixed to avoid the position change of the spherical toy at the moment of demolding. The air cylinder and the piston rod provide a stable adsorption force through air pressure to ensure that the spherical toy always maintains the set position during the demolding process, avoiding lateral or longitudinal displacement caused by external forces (such as mold opening and closing vibration, uneven demolding force). The fixed position can prevent the spherical toy from colliding with the mold cavity due to shaking at the moment of demolding, reducing the risk of surface scratches, depressions or edge breakage. At the same time, for spherical toys with thin walls, hollow parts or inserts, the fixed position can avoid local deformation or insert detachment caused by uneven force during demolding. Brief Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall external structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 is a schematic diagram of the positional relationship at the positioning rod of the present invention; Figure 4 is the present invention Figure 3 is an enlarged schematic diagram of the structure at A in the present invention; Figure 5 is a schematic diagram of the positional relationship at the fixing ring of the present invention; Figure 6 is the present invention Figure 5 is an enlarged schematic diagram of the structure at B in the present invention; Figure 7 is a schematic diagram of the internal sectional structure of the air cylinder of the present invention; Figure 8 is a schematic diagram of the connection relationship at the auxiliary round rod of the present invention; Figure 9 is a schematic diagram of the internal structure of the first mold of the present invention; Figure 10 is a schematic diagram of the internal structure of the positioning sleeve of the present invention; Figure 11 is the present invention Figure 10 is an enlarged schematic diagram of the structure at C in the present invention; Figure 12 is a schematic diagram of the connection relationship at the positioning sleeve of the present invention; Figure 13 is the present inventionFigure 12 Schematic enlarged view of the structure at position D in the [Chinese context].

[0017] In the figure: 11, housing; 12, injection molding machine body; 13, injection system; 14, control device; 15, mold clamping system; 16, positioning rod; 17, limit block; 18, electric control telescopic rod; 21, mold one; 22, mold two; 23, extrusion rod; 24, rack one; 25, meshing gear; 26, rack two; 27, positioning ring; 28, positioning sleeve; 2901, spiral groove; 2902, slider; 2903, moving ring; 2904, connecting rod; 2905, annular cleaning block; 31, fixed ring; 32, auxiliary round rod; 33, limit ring; 34, buffer spring; 35, compression spring; 41, air cylinder; 42, piston rod; 43, positioning spring; 44, connecting air pipe; 45, exhaust pipe. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiments of the present invention Please refer to Figures 1 to 13 , a molding injection device for producing spherical soft toys, including a housing 11, an injection molding machine body 12 is arranged inside the housing 11, an injection system 13 is fixedly installed at one end of the top of the injection molding machine body 12, a control device 14 is fixedly installed on the upper surface of the injection molding machine body 12, a mold clamping system 15 is arranged in the middle of the upper surface of the injection molding machine body 12, a positioning rod 16 is slidably connected inside the mold clamping system 15, a limit block 17 is fixedly installed on the outer surface of one end of the positioning rod 16 away from the mold clamping system 15, an electric control telescopic rod 18 is fixedly connected to the limit block 17, and the output shaft of the electric control telescopic rod 18 penetrates and extends outside the limit block 17. It also includes an injection molding component arranged in the mold clamping system 15; The injection molding assembly includes a first mold 21 and a second mold 22 disposed inside the mold clamping system 15. The first mold 21 and the second mold 22 are attached to each other, and hemispherical injection cavities are respectively formed inside the first mold 21 and the second mold 22. The two hemispheres together form a spherical injection cavity. A through groove is formed through the center of the first mold 21. A pressing rod 23 is slidably connected to the center inside the first mold 21. On the outer surface of one end of the pressing rod 23, a first rack 24 is symmetrically slidably connected. On the outer surface of the first rack 24 near one end of the first mold 21, a meshing gear 25 is engaged. On the outer surface of the meshing gear 25 away from the first rack 24, a second rack 26 is engaged. At the end of the second rack 26 away from the meshing gear 25, a positioning ring 27 is fixedly connected together. A positioning sleeve 28 is rotatably sleeved on the outer surface of the positioning ring 27.

[0020] Among them, a spiral groove 2901 is formed on one side inside the positioning sleeve 28. A slider 2902 is slidably connected inside the spiral groove 2901. One end of the slider 2902 away from the spiral groove 2901 is fixedly connected to a moving ring 2903. On one side of the moving ring 2903, a connecting rod 2904 is symmetrically fixedly connected. At the end of the connecting rod 2904 away from the moving ring 2903, an annular cleaning block 2905 is rotatably connected together.

[0021] Among them, one end of the pressing rod 23 is slidably connected in the through groove at the center of the first mold 21. The first rack 24 and the second rack 26 on the same side are centrosymmetrically arranged with the center point of the meshing gear 25 as the reference. The meshing gear 25 is rotatably connected to the outer surface of the positioning sleeve 28. The second rack 26 and the positioning ring 27 are both slidably connected inside the positioning sleeve 28.

[0022] Among them, the positioning ring 27 is rotatably connected to the outer surface of the moving ring 2903. The moving ring 2903 and the connecting rod 2904 are both slidably connected inside the positioning sleeve 28. The moving ring 2903 and the connecting rod 2904 are slidably connected inside the positioning sleeve 28. A rubber piston is provided on the outer surface of the annular cleaning block 2905, and the annular cleaning block 2905 fits against the groove wall of the through groove formed at the center of the first mold 21. The annular cleaning block 2905 is slidably connected to the outer surface of the pressing rod 23.

[0023] Among them, the pressing rod 23 is located on the movement track of the output shaft end of the electric control telescopic rod 18. The second rack 26 is horizontally slidably connected inside the positioning ring 27.

[0024] Further embodiments Please refer to Figures 2 to 6 、 Figure 8 and Figure 10 , the molding injection equipment for producing spherical soft toys further includes an auxiliary assembly disposed outside the pressing rod 23; The auxiliary component includes a fixing ring 31 fixedly connected to the outer surface of the extrusion rod 23. On the outer surface of the fixing ring 31 near one side of the mold 21, auxiliary round rods 32 are fixedly connected in a centrosymmetric manner with reference to the center of the extrusion rod 23. A limiting ring 33 is slidably connected to the outer surfaces of the auxiliary round rods 32 together. On the outer surface of the auxiliary round rod 32 near the fixing ring 31, buffer springs 34 are fixedly connected in a centrosymmetric manner around the center of the extrusion rod 23. On the side of the auxiliary round rod 32 away from the buffer spring 34, compression springs 35 are fixedly connected in a circumferential array around the center of the extrusion rod 23.

[0025] Among them, a circular hole is penetrated through the center of the mold 21 inside the mold 21. The auxiliary round rod 32 is slidably connected to the inside of the circular hole in a sealed manner. Both the buffer spring 34 and the compression spring 35 are sleeved on the outer surface of the auxiliary round rod 32. One end of the buffer spring 34 away from the limiting ring 33 is fixedly connected to the outer surface of the fixing ring 31.

[0026] Among them, one ends of the first racks 24 away from the meshing gears 25 are fixedly connected to the outer surface of the fixing ring 31.

[0027] Among them, the auxiliary round rods 32 are arranged in an annular array outside the extrusion rod 23.

[0028] Further embodiments Please refer to Figure 5 、 Figure 7 and Figure 9 The molding injection device for producing spherical soft toys further includes an air extraction component arranged outside the mold 21 and the mold 22; The air extraction component includes air cylinders 41 symmetrically and fixedly installed on the outer surfaces of both sides of the mold 21. Pistons 42 are slidably connected through the insides of the air cylinders 41. A positioning spring 43 is sleeved on the outer surface of the piston 42. A connecting air pipe 44 is fixedly communicated with one side of the air cylinder 41 close to the mold 21. An exhaust pipe 45 is fixedly communicated with the outer surface of the air cylinder 41.

[0029] Among them, one end of the piston 42 penetrates through the air cylinder 41 and extends to the outside of the air cylinder 41, and one end of the piston 42 penetrating out of the air cylinder 41 is fixedly connected to the outer surface of the mold 22. The positioning spring 43 is arranged inside the air cylinder 41. Air channels are penetrated through both sides of the mold 21. One end of the connecting air pipe 44 away from the air cylinder 41 is arranged inside the air channel.

[0030] Among them, a one-way valve is arranged in the exhaust pipe 45.

[0031] The working process and principle of the overall content of the above embodiments are as follows: The staff places the first mold 21 and the second mold 22 for injecting spherical toys into the mold clamping system 15. Subsequently, the mold clamping system 15 is used to control the first mold 21 and the second mold 22 to engage with each other, and make the first mold 21 and the second mold 22 fit tightly together without any gaps. Then, the staff injects molten plastic into the engaged first mold 21 and second mold 22 through the control device 14 and the injection system 13. After the molten plastic condenses and forms inside the first mold 21 and the second mold 22, the control device 14 is used to manipulate the mold clamping system 15 to open, so that the mold clamping system 15 drives the first mold 21 and the second mold 22 to separate. After that, the staff starts the electric control telescopic rod 18 through the control device 14, and makes the output shaft end of the electric control telescopic rod 18 extend; It should be noted that the injection system 13, the control device 14, the mold clamping system 15 and the electric control telescopic rod 18 are all prior arts, so no more details will be described here; In the above process, since the extrusion rod 23 is located on the movement track of the output shaft end of the electric control telescopic rod 18, as the output shaft end of the electric control telescopic rod 18 extends, the extrusion rod 23 will gradually contact the output shaft end of the electric control telescopic rod 18, and be extruded as the output shaft end of the electric control telescopic rod 18 continues to extend, and move towards the inside of the first mold 21; At this time, the fixed ring 31 fixedly connected to the extrusion rod 23 will move accordingly, and then drive the first rack 24 fixedly connected to the outer surface of the fixed ring 31 to move synchronously towards the inside of the first mold 21. At the same time, since the first rack 24 and the second rack 26 are symmetrically arranged with respect to the meshing gear 25, and both the first rack 24 and the second rack 26 are engaged with the meshing gear 25, as the first rack 24 moves, it will drive the meshing gear 25 to rotate, and promote the second rack 26 to move away from the first mold 21 under the rotation of the meshing gear 25, and then drive the moving ring 2903 fixedly connected to the second rack 26 to move synchronously; It should be noted that in the above process, the meshing gear 25 is rotatably connected to the positioning ring 27, and the second rack 26 is slidably connected to the positioning ring 27 in a horizontal state. The positioning ring 27 is rotatably connected to the moving ring 2903. A spiral groove 2901 is provided inside the positioning sleeve 28, and the moving ring 2903 is slidably connected to the spiral groove 2901 through a slider 2902. Therefore, when the positioning ring 27 moves with the second rack 26, it will drive the moving ring 2903 connected to it to slide synchronously. And under the restriction of the slider 2902 and the spiral groove 2901, the moving ring 2903 will rotate while moving under the influence of the inclined groove wall of the slider 2902 and the spiral groove 2901 inside the positioning sleeve 28, and then drive the annular cleaning block 2905 connected to the moving ring 2903 through a connecting rod 2904 to rotate synchronously; At this time, the piston provided on the outer wall of the annular cleaning block 2905 will move synchronously until it disengages from the state of being in contact with the inside of the first mold 21. It should be noted that during the process of the annular cleaning block 2905 moving away from the first mold 21, the extrusion rod 23 still moves towards the inside of the first mold 21 in the extended state of the output shaft end of the electric control telescopic rod 18, that is, the movement states of the annular cleaning block 2905 and the extrusion rod 23 are opposite. As the extrusion rod 23 continues to move, the extrusion rod 23 will extrude the spherical toy after condensation between the first mold 21 and the second mold 22, thereby completing the demolding of the spherical toy; Through the setting of the extrusion rod 23, after the spherical toy is formed, the demolding operation of the spherical toy can be completed by extrusion. The extrusion rod 23 can be directly pushed for demolding through the control of the electric control telescopic rod 18, replacing the traditional manual operation, greatly improving the production efficiency. In addition, the design of the extrusion rod 23 can ensure that the force during demolding acts evenly on the surface of the sphere, avoiding deformation or damage caused by uneven local stress, and at the same time reducing the adhesion problem between the mold and the finished product, especially suitable for spherical toys with complex shapes or high-precision requirements; It should be noted that during the above process, as the fixed ring 31 moves, the auxiliary round rods 32 fixedly connected in an annular array on the fixed ring 31 will move accordingly. During the movement of the fixed ring 31 and the auxiliary round rods 32, the buffer spring 34 will synchronously drive the limit ring 33 to move together, and then through the movement of the limit ring 33, the compression spring 35 provided between the limit ring 33 and the mold clamping system 15 will be extruded. At the same time, the auxiliary round rods 32 will move towards the inside of the first mold 21 in the direction of the extrusion rod 23 synchronously until they contact the surface of the spherical toy formed inside the first mold 21 and synchronously push the spherical toy to assist in completing the demolding of the spherical toy; Since the auxiliary round rods 32 are arranged in an annular array outside the extrusion rod 23, when the extrusion rod 23 aligns with the center position of the spherical toy to complete the demolding operation, the auxiliary round rods 32 located outside the extrusion rod 23 will act on the surface of the spherical toy synchronously. And due to the compression and contraction of the compression spring 35 and the buffer spring 34, the elastic potential energy brought by the self-contraction of the compression spring 35 and the buffer spring 34 will act on the auxiliary round rods 32 and the spherical toy through the limit ring 33 and the fixed ring 31 synchronously; Through the arrangement of the auxiliary round rod 32, the limit ring 33, the buffer spring 34 and the compression spring 35, in the process of the extrusion rod 23 squeezing the center position of the spherical toy to complete the demoulding, the spherical toy is assisted in demoulding by synchronously applying pressure to the four corners around the force point of the spherical toy. The auxiliary round rod 32 synchronously applies pressure at the four corners, and combined with the action of the central extrusion rod 23, a uniform demoulding force field is formed to avoid demoulding failure (such as adhesion or jamming) due to local uneven force. At the same time, multi-directional synchronous pressure can effectively overcome the friction between the mold and the sphere, which is particularly suitable for high-precision or complex-surface spherical toys (such as textured, hollow structures, etc.), and the buffer spring 34 and the compression spring 35 can absorb the impact force at the moment of demoulding, avoid damage to the mold or the sphere due to rigid collision, and reduce noise and vibration during equipment operation; By setting the extrusion rod 23 and the four auxiliary round rods 32 together, the auxiliary pressure at the four corners can balance the concentrated force of the central extrusion rod 23 during the demoulding process of the spherical toy, avoiding deformation of the sphere or stress concentration due to excessive force at a single point, ensuring the roundness and dimensional accuracy of the sphere after demoulding. At the same time, the auxiliary round rods 32 apply pressure through multi-point contact, reducing local extrusion on the surface of the sphere and reducing the risk of scratches or whitening. With the demoulding of the spherical toy completed, the staff again controls the output shaft end of the electric telescopic rod 18 to retract through the control device 14. At the same time, the extrusion rod 23 and the fixing ring 31 will lose the extrusion from the electric telescopic rod 18, and the buffer spring 34 and the compression spring 35 will simultaneously lose the pressure, and then quickly rebound under the action of their own elasticity until the initial state is restored. At the same time, the auxiliary round rod 32, the fixing ring 31 and the limit ring 33 will move synchronously, and then drive the extrusion rod 23 to move in the opposite direction through the fixing ring 31, and the extrusion rod 23 gradually returns to the initial position; It should be noted that, in the above process, with the reverse movement of the extrusion rod 23, the rack 1 24 will also synchronously move in the direction away from the mold 1 21, thereby driving the rack 2 26 to move in the direction close to the mold 1 21 through the meshing gear 25. With the movement of the rack 26, the positioning ring 27 will synchronously push the moving ring 2903 in the positioning sleeve 28 to move in the direction close to the inside of the mold 1 21. During the movement of the moving ring 2903, it will be restricted by the slider 2902 and the spiral groove 2901, and will rotate synchronously in the positioning sleeve 28. At this time, driven by the connecting rod 2904, the annular cleaning block 2905 and the piston arranged outside the annular cleaning block 2905 will rotate synchronously, so that relative friction occurs between the inside of the annular cleaning block 2905 and the outer surface of the extrusion rod 23, and rotational friction occurs between the piston and the through groove wall opened on the mold 1 21, so that the outer surface of the extrusion rod 23 and the surface of the through groove wall opened in the mold 1 21 are cleaned, and the above process will be repeated as the demoulding of the spherical toy proceeds; By setting the annular cleaning block 2905, relative rotational friction can be presented with the extrusion rod 23, thereby cleaning the through groove opened on the extrusion rod 23 and the first mold 21. The contact between the annular cleaning block 2905 and the extrusion rod 23 can prevent impurities contaminated during the demolding process from adhering to the outer surface of the extrusion rod 23, avoiding affecting the demolding of the next spherical toy. At the same time, the continuous contact between the annular cleaning block 2905 and the through groove of the first mold 21 can prevent the residues in the through groove of the first mold 21 from entering the surface of the sphere, resulting in defects such as sink marks, flash, or insufficient gloss. The real-time cleaning of the annular cleaning block 2905 can ensure the cleanliness of the mold cavity and guarantee product consistency; During the above process, as the demolding procedure progresses, that is, during the process of the first mold 21 and the second mold 22 separating from each other under the control of the mold clamping system 15, the piston rod 42 fixedly connected to the second mold 22 will synchronously move inside the air cylinder 41 fixedly connected to the first mold 21. During the movement, the positioning spring 43 arranged inside the air cylinder 41 is compressed, thereby reducing the air pressure inside the air cylinder 41. And since the connecting air pipe 44 fixedly connected to one end of the air cylinder 41 extends into the first mold 21, the movement of the piston rod 42 will extract the gas between the first mold 21 and the spherical toy through the connecting air pipe 44. And due to the symmetrical arrangement of the connecting air pipe 44, during the demolding process of the spherical toy, both ends of it will be subjected to the suction force between the piston rod 42 and the air cylinder 41, fixing the position of the spherical toy and preventing the spherical toy from loosening at the moment when the first mold 21 and the second mold 22 are separated; By setting the air cylinder 41 and the piston rod 42, the spherical toy is fixed to prevent the position of the spherical toy from changing at the moment of demolding. The air cylinder 41 and the piston rod 42 provide a stable adsorption force through air pressure, ensuring that the spherical toy always maintains the set position during the demolding process, avoiding lateral or longitudinal displacement caused by external forces (such as mold opening and closing vibration, uneven demolding force). The fixed position can prevent the spherical toy from colliding with the mold cavity due to shaking at the moment of demolding, reducing the risk of surface scratches, dents, or edge breakage. At the same time, for spherical toys with thin walls, hollow structures, or inserts, the fixed position can avoid local deformation or insert detachment caused by uneven force during demolding; It should be noted that the adsorption force of the above-mentioned air cylinder 41 and piston rod 42 is small and will not affect the extrusion of the spherical toy by the extrusion rod 23; At the same time, during the process of the first mold 21 and the second mold 22 approaching each other, the piston rod 42 will return to its initial state inside the air cylinder 41. And, a one-way valve is provided in the exhaust pipe 45, and the air originally drawn into the air cylinder 41 will be discharged through the exhaust pipe 45, which will not affect the next use of the air cylinder 41 and the piston rod 42.

[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for producing spherical soft toys, including a housing (11). Inside the housing (11), there is an injection molding machine body (12). At one end of the top of the injection molding machine body (12), an injection system (13) is fixedly installed. On the upper surface of the injection molding machine body (12), a control device (14) is fixedly installed. In the middle of the upper surface of the injection molding machine body (12), a mold clamping system (15) is arranged. A positioning rod (16) is slidably connected inside the mold clamping system (15). At the outer surface of one end of the positioning rod (16) away from the mold clamping system (15), a limiting block (17) is fixedly installed. An electric control telescopic rod (18) is fixedly connected to the limiting block (17), and the output shaft of the electric control telescopic rod (18) penetrates and extends outside the limiting block (17). It is characterized in that: It also includes an injection molding component disposed within the mold clamping system (15); The injection molding component includes a first mold (21) and a second mold (22) disposed inside the mold clamping system (15). The first mold (21) and the second mold (22) are mutually adhered. Hemispherical injection cavities are respectively formed inside the first mold (21) and the second mold (22). The two hemispheres together form a spherical injection cavity. A through groove is formed through the center of the first mold (21). A pressing rod (23) is slidably connected to the center inside the first mold (21). On the outer surface of one end of the pressing rod (23), a first rack (24) is symmetrically slidably connected. Meshing gears (25) are respectively meshed with the outer surfaces of the first racks (24) near one end of the first mold (21). A second rack (26) is meshed with the outer surface of one side of the meshing gear (25) away from the first rack (24). A positioning ring (27) is fixedly connected to the common end of the second racks (26) away from the meshing gear (25). A positioning sleeve (28) is rotatably sleeved on the outer surface of the positioning ring (27).

2. The molding injection device for producing a spherical soft toy according to claim 1, characterized in that: A spiral groove (2901) is formed on one side inside the positioning sleeve (28). A slider (2902) is slidably connected inside the spiral groove (2901). A moving ring (2903) is fixedly connected to the end of the slider (2902) away from the spiral groove (2901). Connecting rods (2904) are symmetrically fixedly connected to one side of the moving ring (2903). A ring-shaped cleaning block (2905) is rotatably connected to the common end of the connecting rods (2904) away from the moving ring (2903).

3. The molding injection device for producing a spherical soft toy according to claim 1, characterized in that: One end of the pressing rod (23) is slidably connected to the through groove at the center of the first mold (21). The first racks (24) and the second racks (26) on the same side are centrally symmetrically arranged with the center point of the meshing gear (25) as the reference. The meshing gear (25) is rotatably connected to the outer surface of the positioning sleeve (28). The second rack (26) and the positioning ring (27) are both slidably connected inside the positioning sleeve (28).

4. The molding injection device for producing a spherical soft toy according to claim 2, wherein: The positioning ring (27) is rotatably connected to the outer surface of the moving ring (2903). The moving ring (2903) and the connecting rods (2904) are both slidably connected inside the positioning sleeve (28). A rubber piston is provided on the outer surface of the ring-shaped cleaning block (2905). The ring-shaped cleaning block (2905) is in contact with the wall of the through groove formed at the center of the first mold (21). The ring-shaped cleaning block (2905) is slidably connected to the outer surface of the pressing rod (23).

5. The molding injection device for producing a spherical soft toy according to claim 1, wherein: It also includes an auxiliary component disposed outside the pressing rod (23); The auxiliary component comprises a fixing ring (31) fixedly connected to the outer surface of the extrusion rod (23); an auxiliary round rod (32) is fixedly connected to the outer surface of the fixing ring (31) on the side close to the mold (21) in a centrally symmetrical manner with the center of the extrusion rod (23) as a reference; the outer surfaces of the auxiliary round rod (32) are slidably connected to the limiting ring (33); a buffer spring (34) is fixedly connected to the outer surface of the auxiliary round rod (32) on the side close to the fixing ring (31) in a centrally symmetrical manner around the center of the extrusion rod (23); and a compression spring (35) is fixedly connected to the outer surface of the auxiliary round rod (32) on the side away from the buffer spring (34) in a circular array around the center of the extrusion rod (23).

6. The molding injection device for producing a spherical soft toy according to claim 5, characterized in that: A circular hole is formed inside the mold 1 (21) and around the center of the mold 1 (21). The auxiliary round rod (32) is sealingly and slidably connected to the inside of the circular hole. The buffer spring (34) and the compression spring (35) are both sleeved on the outer surface of the auxiliary round rod (32). One end of the buffer spring (34) away from the limiting ring (33) is fixedly connected to the outer surface of the fixing ring (31).

7. The molding injection device for producing a spherical soft toy according to claim 5, characterized in that: One end of the rack 1 (24) away from the meshing gear (25) is fixedly connected to the outer surface of the fixing ring (31).

8. The molding injection device for producing a spherical soft toy according to claim 1, characterized in that: It also includes an exhaust assembly disposed outside the mold 1 (21) and the mold 2 (22); The air extraction assembly comprises an air cylinder (41) symmetrically fixedly mounted on the outer surfaces of both sides of the mold one (21); a piston rod (42) is slidably connected to the inside of the air cylinder (41); a positioning spring (43) is sleeved on the outer surface of the piston rod (42); a connecting air pipe (44) is fixedly connected to the side of the air cylinder (41) close to the mold one (21); and an exhaust pipe (45) is fixedly connected to the outer surface of the air cylinder (41).

9. The molding injection device for producing a spherical soft toy according to claim 8, characterized in that: One end of the piston rod (42) passes through the air cylinder (41) and extends to the outside of the air cylinder (41), and one end of the piston rod (42) passes through the air cylinder (41) and is fixedly connected to the outer surface of the second mold (22). The positioning spring (43) is arranged inside the air cylinder (41). Air passages are opened through both sides of the first mold (21), and the end of the connecting air pipe (44) away from the air cylinder (41) is arranged inside the air passage.

Images