Multi-color injection molding structure with anti-burst function

Abstract

The invention relates to the technical field of injection molds, in particular to a multicolor injection molding structure with an anti-burst function, which comprises a mounting frame, two electric guide rails, a fixed plate, a static mold, a movable plate, a movable mold and the like, the two electric guide rails are mounted on the mounting frame, the tops of the two electric guide rails are jointly connected with the fixed plate, and the static mold is mounted on the fixed plate; the tops of the sliding blocks of the two electric guide rails are jointly connected with a movable plate, and a movable mold is installed on the movable plate. Plastic materials can be injected into the movable mold and the static mold through the feeding port for injection molding, the interior of the feeding pipe is designed into a dovetail groove, stress can be dispersed, the arc-shaped blocks are combined into a thread structure, injection molding pressure can be dispersed through progressive contact of the thread structure, concentrated abrasion of a sprue area is reduced, cracks in an injection molding part are avoided, and the quality of the injection molding part is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and particularly to a multi-color injection molding structure with an anti-explosion function. Background Art

[0002] Multi-color injection molding is an advanced plastic molding technology that allows the production of plastic products with multiple colors or different material properties in the same mold or through multiple mold steps. This technology can significantly enhance the design flexibility and functionality of products and is widely used in fields such as automobiles, electronics, household appliances, and medical equipment.

[0003] During the injection molding process, a plastic material is first injected to form a base part, and then the workpiece is rotated or moved within the same mold, and then a second plastic material is injected. If the shrinkage rates of different color plastic materials vary greatly (such as the combination of PA and ABS), internal stress concentration is likely to occur at the interface. If the plastic material is not fully dried (such as PA type hygroscopic resin), the volatilization of moisture after injection will cause the expansion of micro-cracks inside the injection molded part, affecting the quality of the injection molded part. Summary of the Invention

[0004] In view of this, the present invention provides a multi-color injection molding structure with an anti-explosion function, which can overcome the disadvantages that if the shrinkage rates of different color plastic materials vary greatly, internal stress concentration is likely to occur at the interface, and if the plastic material is not fully dried, the volatilization of moisture after injection will cause the expansion of micro-cracks inside the injection molded part, affecting the quality of the injection molded part.

[0005] The technical solution of the present invention is: a multi-color injection molding structure with an anti-explosion function, including a mounting frame, an electric guide rail, a fixing plate, a stationary mold, a moving plate, a moving mold, an arc block, a feed pipe, a cooling mechanism, and an exhaust mechanism. Two electric guide rails are installed on the mounting frame, and a fixing plate is commonly connected to the tops of the two electric guide rails. A stationary mold is installed on the fixing plate. The tops of the sliders of the two electric guide rails are commonly connected to a moving plate, and a moving mold is installed on the moving plate. Feed grooves are opened on both the moving mold and the stationary mold, and arc blocks are evenly spaced and connected inside the feed grooves. When the moving mold and the stationary mold are closed, the arc blocks on the moving mold and the arc blocks on the stationary mold will combine into a threaded structure. A feed pipe is connected inside the stationary mold, and the feed pipe communicates with the feed groove on the stationary mold. The inside of the feed pipe is designed as a dovetail groove. A feed port is opened on the fixing plate, and the feed port communicates with the feed pipe. The cooling mechanism is used to cool the moving mold and the stationary mold, and the exhaust mechanism is used to exhaust the air inside the moving mold and the stationary mold.

[0006] In a preferred embodiment of the present invention, the cooling mechanism includes a cooling pipe and a valve. Cooling pipes are connected inside both the fixing plate and the moving plate, and valves are installed on the cooling pipes.

[0007] In a preferred embodiment of the present invention, the exhaust mechanism includes an electric push rod and a sealing plate. Exhaust grooves are formed on both the moving mold and the stationary mold. The exhaust grooves communicate with the feeding groove. An electric push rod is installed on the top of the stationary mold. A sealing plate for sealing the exhaust groove is connected to the telescopic rod of the electric push rod. A rectangular opening is formed on the sealing plate.

[0008] In a preferred embodiment of the present invention, the multi-color injection molding structure with an anti-explosion function further includes a blowing mechanism. The blowing mechanism includes a fixed frame, a rotating frame, a connecting frame, a mounting plate, a rotating shaft, a nozzle, an air pump, an air pipe, an air tank and a hose. A fixed frame is connected to the mounting frame. The rotating frame is rotatably connected to the top of the fixed frame. The connecting frame is connected to the top of the rotating frame. The mounting plate is connected to the connecting frame. The rotating shaft is rotatably connected to the bottom of the mounting plate. The nozzle is connected to the rotating shaft. The air pump is installed on the top of the mounting frame. The air pipe is connected to the air outlet end of the air pump. The air tank is connected to the top of the connecting frame. The air pipe and the air tank are connected and communicate with each other. The hose is connected to the air tank and the nozzle.

[0009] In a preferred embodiment of the present invention, the blowing mechanism further includes a damping ring. The damping ring is connected to the mounting plate. The rotating shaft is located inside the damping ring and contacts the inner wall of the damping ring.

[0010] In a preferred embodiment of the present invention, the multi-color injection molding structure with an anti-explosion function further includes an ejection mechanism. The ejection mechanism includes a triangular frame, a circular block, a connecting rod and an ejector rod. The triangular frame is connected to the top of the mounting frame. The circular block is connected to the triangular frame. The connecting rod is connected to the circular block. The ejector rod for ejecting the injection molded part is connected to the connecting rod. The ejector rod slidably penetrates through the moving plate and the moving mold.

[0011] In a preferred embodiment of the present invention, the multi-color injection molding structure with an anti-explosion function further includes a material receiving mechanism. The material receiving mechanism includes a wire mesh frame and a support rod. The wire mesh frame is commonly connected to the bottoms of two electric guide rails. Support rods for supporting the wire mesh frame are connected to the electric guide rails. The support rods are connected to the wire mesh frame.

[0012] In a preferred embodiment of the present invention, the multi-color injection molding structure with an anti-explosion function further includes a sliding rod. A sliding rod for guiding the moving plate is slidably connected to the fixed frame. The sliding rod is connected to the moving plate.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. In the present invention, plastic materials can be injected into the moving mold and the stationary mold through the feeding port for injection molding. The inside of the feeding pipe is designed as a dovetail groove, which can disperse stress. The arc-shaped blocks are combined into a threaded structure, and the progressive contact of the threaded structure can disperse the injection pressure, reduce the concentrated wear in the gate area, avoid cracks in the interior of the injection molded part, and ensure the quality of the injection molded part.

[0015] 2. The air pump can suck air into the trachea, and the air is ejected from the nozzle through the hose and sprayed onto the moving mold and the stationary mold to cool the moving mold and the stationary mold, preventing the moving mold and the stationary mold from deforming due to overheating, and can remove the residues on the moving mold and the stationary mold to avoid the residues affecting the appearance of the new injection molded parts.

[0016] 3. The ejector rod can eject the injection molded parts to automatically demold, forming a continuous working process and reducing manual intervention, thus significantly improving the production speed and efficiency. Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0018] Figure 2 It is a three-dimensional structure schematic diagram of the stationary mold, the moving plate, the moving mold and the feed port of the present invention.

[0019] Figure 3 It is a three-dimensional structure schematic diagram of the moving mold and the feed trough of the present invention.

[0020] Figure 4 For the present invention Figure 3 An enlarged view of part A in it.

[0021] Figure 5 It is a cross-sectional view of the fixing plate and the stationary mold of the present invention.

[0022] Figure 6 It is a cross-sectional view of the feed pipe of the present invention.

[0023] Figure 7 It is a three-dimensional structure schematic diagram of the cooling mechanism of the present invention.

[0024] Figure 8 It is a three-dimensional structure schematic diagram of the exhaust mechanism of the present invention.

[0025] Figure 9 For the present invention Figure 8 An enlarged view of part B in it.

[0026] Figure 10 It is a three-dimensional structure schematic diagram of the plugging plate and the rectangular opening of the present invention.

[0027] Figure 11 It is a three-dimensional structure schematic diagram of the air blowing mechanism of the present invention.

[0028] Figure 12 It is a three-dimensional structure schematic diagram of the rotating shaft, the nozzle and the damping ring of the present invention.

[0029] Figure 13 It is the first three-dimensional structure schematic diagram of the ejection mechanism of the present invention.

[0030] Figure 14This is the second three-dimensional structural schematic diagram of the ejection mechanism of the present invention.

[0031] Figure 15 This is the three-dimensional structural schematic diagram of the material receiving mechanism of the present invention.

[0032] In the figure: 1. Mounting frame, 2. Electric guide rail, 3. Fixed plate, 4. Stationary mold, 5. Moving plate, 6. Movable mold, 7. Feeding groove, 8. Arc block, 9. Feeding pipe, 10. Feeding port, 111. Cooling pipe, 112. Valve, 121. Exhaust groove, 122. Electric push rod, 123. Sealing plate, 124. Rectangular opening, 131. Fixed frame, 132. Rotating frame, 133. Connecting frame, 134. Mounting plate, 135. Rotating shaft, 136. Nozzle, 137. Damping ring, 138. Air pump, 139. Air pipe, 1310. Air box, 1311. Hose, 141. Tripod, 142. Circular block, 143. Connecting rod, 144. Ejector rod, 151. Mesh frame, 152. Support rod, 16. Slide bar. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the detailed implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0034] Refer to Figures 1 - 10 , a multi-color injection molding structure with an anti-explosion function, including a mounting frame 1, an electric guide rail 2, a fixed plate 3, a stationary mold 4, a moving plate 5, a movable mold 6, an arc block 8, a feeding pipe 9, a cooling mechanism and an exhaust mechanism. Electric guide rails 2 are installed on the front and rear sides of the right side of the mounting frame 1 through bolts. The right sides of the tops of the two electric guide rails 2 are jointly connected through bolts to a fixed plate 3. A stationary mold 4 is installed on the left side of the fixed plate 3. The tops of the sliders of the two electric guide rails 2 are jointly connected through bolts to a moving plate 5. A movable mold 6 is installed on the right side of the moving plate 5. Four feeding grooves 7 are opened on the sides of the movable mold 6 and the stationary mold 4 that are close to each other. The four feeding grooves 7 are evenly spaced. When the movable mold 6 and the stationary mold 4 are closed, the feeding grooves 7 on the movable mold 6 and the feeding grooves 7 on the stationary mold 4 will be combined together. Arc blocks 8 are evenly spaced and connected in the feeding grooves 7. When the movable mold 6 and the stationary mold 4 are closed, the arc blocks 8 on the movable mold 6 and the arc blocks 8 on the stationary mold 4 will be combined into a threaded structure. The upper and lower sides and the front and rear sides inside the stationary mold 4 are all connected with feeding pipes 9. The feeding pipes 9 communicate with the feeding grooves 7 on the stationary mold 4. The inside of the feeding pipes 9 is designed as a dovetail groove. The upper and lower sides and the front and rear sides inside the fixed plate 3 are all provided with feeding ports 10. The feeding ports 10 communicate with the feeding pipes 9. The cooling mechanism is used to cool the movable mold 6 and the stationary mold 4, and the exhaust mechanism is used to exhaust the air inside the movable mold 6 and the stationary mold 4.

[0035] Referring to Figure 7 , the cooling mechanism includes a cooling pipe 111 and a valve 112. The cooling pipes 111 are connected inside both the fixed plate 3 and the moving plate 5, and valves 112 are installed at the front parts of the cooling pipes 111.

[0036] Referring to Figures 8 - 10 , the exhaust mechanism includes an electric push rod 122 and a plugging plate 123. Exhaust grooves 121 are formed at the upper parts of the sides where the moving mold 6 and the stationary mold 4 are close to each other. When the moving mold 6 and the stationary mold 4 are closed, the exhaust groove 121 on the moving mold 6 and the exhaust groove 121 on the stationary mold 4 will be combined together. The exhaust groove 121 communicates with the uppermost feeding groove 7. An electric push rod 122 is installed in the middle of the top of the stationary mold 4 through bolts. The left end of the telescopic rod of the electric push rod 122 is connected with a plugging plate 123, and a rectangular opening 124 is formed in the right part of the plugging plate 123.

[0037] Install this structure on the injection molding machine through the mounting frame 1. Control the electric guide rail 2 to drive the moving plate 5 and the moving mold 6 to move to the right. The moving mold 6 and the stationary mold 4 are closed. Then, inject the first plastic material into the feed pipe 9 through the feed port 10. The first plastic material flows into the feed trough 7 through the feed pipe 9. Subsequently, the first plastic material flows into the moving mold 6 and the stationary mold 4 through the feed trough 7 for injection molding. The inside of the feed pipe 9 is designed with a dovetail groove, which can disperse stress. When the moving mold 6 and the stationary mold 4 are closed, the arc-shaped blocks 8 on the moving mold 6 and the arc-shaped blocks 8 on the stationary mold 4 will combine into a threaded structure. The first plastic material flows into the moving mold 6 and the stationary mold 4 along the threaded structure. The progressive contact of the threaded structure can disperse the injection pressure, reduce the concentrated wear in the gate area, avoid cracks in the interior of the injection molded part, and ensure the quality of the injection molded part. After the injection of the first plastic material is completed, control the telescopic rod of the electric push rod 122 to extend, driving the plugging plate 123 to move backward. The rectangular opening 124 corresponds to the exhaust groove 121. The air in the moving mold 6 and the stationary mold 4 is discharged through the exhaust groove 121, avoiding the reverse pressure generated by the compression of the second plastic material due to gas, so as to avoid insufficient filling or flow imbalance. After the exhaust is completed, control the telescopic rod of the electric push rod 122 to shorten, driving the plugging plate 123 to move forward. The rectangular opening 124 and the exhaust groove 121 are staggered, and the plugging plate 123 seals the exhaust groove 121. Then, inject the second plastic material. After the injection molding is completed, inject cooling water into the cooling pipe 111. Cool the stationary mold 4 and the moving mold 6 through the cooling water, thereby cooling the injection molded part and accelerating the solidification and molding of the injection molded part. The valve 112 can be closed to make the cooling water stand still in the cooling pipe 111. The flowing cooling water can improve the heat exchange effect and the cooling efficiency. In the subsequent cooling process, the cooling water can be made to stand still in the cooling pipe 111 to save resources. After the injection molded part is cooled, open the valve 112 to discharge the cooling water. Then, control the electric guide rail 2 to drive the moving plate 5 and the moving mold 6 to move to the left to open the mold. The moving mold 6 and the stationary mold 4 can be disassembled and replaced, and the appropriate moving mold 6 and stationary mold 4 can be replaced according to the structure of the injection molded part.

[0038] Refer to Figure 11 and Figure 12, further comprising a blowing mechanism, the blowing mechanism includes a fixed frame 131, a rotating frame 132, a connecting frame 133, a mounting plate 134, a rotating shaft 135, a nozzle 136, a damping ring 137, an air pump 138, an air pipe 139, an air tank 1310 and a hose 1311. The left side of the mounting frame 1 is connected to the fixed frame 131 by bolts. The top of the fixed frame 131 is rotatably connected to the rotating frame 132. Both the front and rear sides of the top of the rotating frame 132 are connected to the connecting frame 133 by bolts. The right sides of the two connecting frames 133 are jointly connected to the mounting plate 134 by bolts. Both the left and right sides of the bottom of the mounting plate 134 are rotatably connected to the rotating shaft 135. The rotating shaft 135 is evenly spaced and connected with the nozzles 136. Both the front and rear sides of the mounting plate 134 are symmetrically connected with the damping rings 137 on the left and right. The rotating shaft 135 is located within the damping ring 137, and the rotating shaft 135 contacts the inner wall of the damping ring 137. The left side of the top of the mounting frame 1 is installed with the air pump 138 by bolts. The air outlet end of the air pump 138 is connected with the air pipe 139. The top of the two connecting frames 133 is jointly connected to the air tank 1310 by bolts. The right end of the air pipe 139 is connected to the left side of the air tank 1310, and the air pipe 139 is communicated with the air tank 1310. The right side of the air tank 1310 is evenly spaced and communicated with the hoses 1311. The number of the hoses 1311 is the same as that of the nozzles 136, and the hoses 1311 are connected to the nozzles 136.

[0039] After the moving mold 6 and the static mold 4 are opened, rotate the rotating shaft 135, the rotating shaft 135 drives the nozzle 136 to rotate, align the nozzle 136 with the moving mold 6 and the static mold 4, then start the air pump 138, the air pump 138 sucks air into the air pipe 139, the air flows into the air tank 1310 through the air pipe 139, and then the air is ejected from the nozzle 136 through the hose 1311 and sprayed onto the moving mold 6 and the static mold 4 to cool the moving mold 6 and the static mold 4, preventing the moving mold 6 and the static mold 4 from deforming due to overheating, and being able to remove the residues on the moving mold 6 and the static mold 4, avoiding the residues from affecting the appearance of the new injection molded parts. Under the action of the damping ring 137, the resistance of the rotating shaft 135 can be increased, thereby increasing the resistance of the nozzle 136 to rotate and preventing the angle of the nozzle 136 from changing. When it is necessary to replace the moving mold 6 and the static mold 4, the rotating frame 132 can be rotated, and the rotating frame 132 drives the mounting plate 134 to rotate, turning the mounting plate 134 away from above the moving mold 6 and the static mold 4.

[0040] Refer to Figure 13 and Figure 14 , further comprising an ejection mechanism, the ejection mechanism includes a triangular frame 141, a circular block 142, a connecting rod 143 and an ejector rod 144. The middle of the top of the mounting frame 1 is connected to the triangular frame 141 by bolts. The upper right part of the triangular frame 141 is connected to the circular block 142 by bolts. The front, rear, upper and lower sides of the circular block 142 are all connected with the connecting rods 143. The ends of the four connecting rods 143 away from each other are all connected with the ejector rods 144. The ejector rods 144 slide through the moving plate 5 and the moving mold 6.

[0041] Referring to Figure 15 , it further includes a material receiving mechanism. The material receiving mechanism includes a screen frame 151 and support rods 152. The left sides of the bottoms of the two electric guide rails 2 are commonly connected to the screen frame 151 by bolts. The screen frame 151 is inclined. Support rods 152 are connected to the mutually remote sides of the two electric guide rails 2 by bolts. The two support rods 152 are respectively connected to the front and rear sides of the screen frame 151.

[0042] After the moving mold 6 and the stationary mold 4 are clamped, the ejector rod 144 is still located within the moving mold 6 to prevent leakage of the plastic material. After the moving mold 6 and the stationary mold 4 are opened, relative movement occurs between the moving mold 6 and the ejector rod 144. The ejector rod 144 can eject the injection molded part to automatically perform demolding, forming a continuous working process, reducing manual intervention, thereby significantly improving the production speed and efficiency. The injection molded part will fall into the screen frame 151 and fall down along the screen frame 151 for subsequent collection. The screen frame 151 is inclined to ensure that the injection molded part can fall down along the screen frame 151 and prevent the injection molded part from remaining in the screen frame 151.

[0043] Referring to Figure 1 , it further includes a sliding rod 16. The front and rear sides of the fixed frame 131 are symmetrically and slidably connected to the sliding rod 16 up and down. The right end of the sliding rod 16 is connected to the left side of the moving plate 5. The sliding rod 16 can guide the moving plate 5 to improve the stability of the moving plate 5.

[0044] The above are only examples of the present invention and are not used to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included within the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art of those skilled in the art.

Claims

1. A multi-color injection molding structure with an explosion-proof function, comprising a mounting bracket (1), characterized in that: It further includes an electric guide rail (2), a fixing plate (3), a stationary mold (4), a moving plate (5), a moving mold (6), an arc-shaped block (8), a feed pipe (9), a cooling mechanism and an exhaust mechanism. Two electric guide rails (2) are installed on the mounting frame (1). The tops of the two electric guide rails (2) are jointly connected to a fixing plate (3). A stationary mold (4) is installed on the fixing plate (3). The tops of the sliders of the two electric guide rails (2) are jointly connected to a moving plate (5). A moving mold (6) is installed on the moving plate (5). Feeding grooves (7) are formed in both the moving mold (6) and the stationary mold (4). Arc-shaped blocks (8) are evenly spaced and connected in the feeding grooves (7). When the moving mold (6) and the stationary mold (4) are closed, the arc-shaped blocks (8) on the moving mold (6) and the arc-shaped blocks (8) on the stationary mold (4) will combine into a threaded structure. A feed pipe (9) is connected inside the stationary mold (4). The feed pipe (9) communicates with the feeding groove (7) on the stationary mold (4). The inside of the feed pipe (9) is designed as a dovetail groove. A feed port (10) is formed in the fixing plate (3). The feed port (10) communicates with the feed pipe (9). The cooling mechanism is used to cool the moving mold (6) and the stationary mold (4), and the exhaust mechanism is used to exhaust the air inside the moving mold (6) and the stationary mold (4).

2. The multi-color injection molding structure with an explosion-proof function according to claim 1, characterized in that: The cooling mechanism includes cooling pipes (111) and valves (112). Cooling pipes (111) are connected inside both the fixing plate (3) and the moving plate (5). Valves (112) are installed on the cooling pipes (111).

3. The multi-color injection molding structure with an anti-explosion function according to claim 2, wherein: The exhaust mechanism includes an electric push rod (122) and a plugging plate (123). Exhaust grooves (121) are formed in both the moving mold (6) and the stationary mold (4). The exhaust grooves (121) communicate with the feeding grooves (7). An electric push rod (122) is installed on the top of the stationary mold (4). A plugging plate (123) for sealing the exhaust groove (121) is connected to the telescopic rod of the electric push rod (122). A rectangular opening (124) is formed in the plugging plate (123).

4. A multi-color injection molding structure with an explosion-proof function according to claim 1, characterized in that: The multi-color injection molding structure with an explosion-proof function further includes a blowing mechanism. The blowing mechanism includes a fixing frame (131), a rotating frame (132), a connecting frame (133), a mounting plate (134), a rotating shaft (135), a spray head (136), an air pump (138), an air pipe (139), an air tank (1310) and a hose (1311). A fixing frame (131) is connected to the mounting frame (1). The top of the fixing frame (131) is rotatably connected to a rotating frame (132). The top of the rotating frame (132) is connected to a connecting frame (133). A mounting plate (134) is connected to the connecting frame (133). The bottom of the mounting plate (134) is rotatably connected to a rotating shaft (135). A spray head (136) is connected to the rotating shaft (135). An air pump (138) is installed on the top of the mounting frame (1). An air pipe (139) is connected to the air outlet end of the air pump (138). An air tank (1310) is connected to the top of the connecting frame (133). The air pipe (139) is connected to and communicates with the air tank (1310). A hose (1311) is communicated with the air tank (1310). The hose (1311) is connected to the spray head (136).

5. The multi-color injection molding structure with an explosion-proof function according to claim 4, characterized in that: The air blowing mechanism further includes a damping ring (137). The damping ring (137) is connected to the mounting plate (134). The rotating shaft (135) is located inside the damping ring (137) and contacts the inner wall of the damping ring (137).

6. The multi-color injection molding structure with an explosion-proof function according to claim 1, characterized in that: The multi-color injection molding structure with an anti-explosion function further includes an ejection mechanism. The ejection mechanism includes a tripod (141), a circular block (142), a connecting rod (143), and an ejector rod (144). The tripod (141) is connected to the top of the mounting frame (1). The circular block (142) is connected to the tripod (141). The connecting rod (143) is connected to the circular block (142). The ejector rod (144) for ejecting the injection molded part is connected to the connecting rod (143). The ejector rod (144) slidably penetrates through the moving plate (5) and the moving die (6).

7. The multi-color injection molding structure with an explosion-proof function according to claim 1, characterized in that: The multi-color injection molding structure with an anti-explosion function further includes a material receiving mechanism. The material receiving mechanism includes a wire mesh frame (151) and a support rod (152). The wire mesh frame (151) is commonly connected to the bottoms of the two electric guide rails (2). The support rods (152) for supporting the wire mesh frame (151) are connected to the electric guide rails (2). The support rod (152) is connected to the wire mesh frame (151).

8. The multi-color injection molding structure with an explosion-proof function according to claim 4, characterized in that: The multi-color injection molding structure with an anti-explosion function further includes a slide bar (16). The slide bar (16) for guiding the moving plate (5) is slidably connected to the fixed frame (131). The slide bar (16) is connected to the moving plate (5).

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