A multi-color plastic injection molding machine

Abstract

The present application relates to a multi-color plastic injection molding machine, belonging to the field of injection molding technology, comprising a box body, the interior of which is hollow, a hinged door for closing the box body being provided on the box body, a turntable rotatably provided in the box body, a fixed plate provided on the turntable, a lower mold and an upper mold provided on the fixed plate, the fixed plate being hinged on the turntable, the hinge axis of the fixed plate being parallel to the plane of the turntable and close to the edge of the turntable, the turntable being provided with a first driving member for driving the fixed plate to rotate and drive the injection molded part to dump toward the opening of the box body; the plastic injection molding machine also comprises a receiving member, the receiving member being used to receive the injection molded part when it falls from the mold. The present application has the effect of facilitating the removal of the injection molded part.

Description

Technical Field

[0001] The present application relates to the technical field of injection molded parts, and in particular to a multi-color plastic injection molding machine. Background Art

[0002] Injection molded parts refer to various products produced by injection molding machines, including various packaging and parts. They are mainly made of materials such as polyethylene or polypropylene with the addition of various organic solvents. Injection molded products are widely used, and most products are multi-colored for aesthetic purposes.

[0003] At present, a patent document with authorization announcement number CN218111501U discloses a multi-color plastic injection molding machine, including a box body, wherein a cavity and an injection cavity are provided inside the box body, the bottom end of the cavity is fixedly connected to two cylinders, the top ends of the two cylinders are fixedly connected to a hollow block, the interior of the hollow block is provided with a rotating structure, and the inner upper surface of the injection cavity is provided with a connecting plate. When the utility model is in use, by providing a cylinder and an electric push rod, the cylinder moves up and down to drive the lower base plate to move up and down. After the injection of the first plastic color is completed, the turntable is rotated by the push of the electric push rod to perform the injection of the second plastic color. By providing two sets of molds, the two screw feeders are operated simultaneously, so that not only multiple colors can be injected, but also the products inside the two molds can be injected at the same time, saving the time required for injection molding and improving production efficiency.

[0004] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: when removing the molded injection molded parts, the injection molded parts need to be taken out from the mold inside the box. Since the operation space inside the box is small, it is inconvenient to take out the injection molded parts. Summary of the Invention

[0005] To facilitate the removal of injection-molded parts, the present application provides a multi-color plastic injection molding machine.

[0006] This application provides a multi-color plastic injection molding machine, which adopts the following technical solutions:

[0007] A multi-color plastic injection molding machine includes a box body, the interior of the box body is hollow, an opening and closing door for closing the box body is hinged on the box body, a turntable is rotatably arranged in the box body, a fixed plate is provided on the turntable, a lower mold and an upper mold are provided on the fixed plate, the fixed plate is hinged on the turntable, the hinge axis of the fixed plate is parallel to the plane where the turntable is located and close to the edge of the turntable, and a first driving member is provided on the turntable for driving the fixed plate to rotate and drive the injection molded part to dump toward the opening of the box body; the plastic injection molding machine also includes a receiving member, which is used to receive the injection molded part when it falls from the mold.

[0008] By adopting the above technical solution, after the injection molded part is formed, the turntable rotates to drive the fixed plate, the lower mold and the upper mold to rotate toward the opening of the box body, and then the fixed plate is driven to rotate by the first driving member, and the rotation of the fixed plate drives the lower mold and the upper mold to rotate, so that the demoulded injection molded part falls off toward the edge of the turntable and is received on the receiving member, and then the injection molded part is taken out, and the operation is simple and convenient; furthermore, in the above process, the process of entering the interior of the box body to take out materials is reduced, thereby improving the safety of the staff and facilitating the removal of the injection molded parts.

[0009] Optionally, the receiving part includes a winding shaft rotatably arranged on the opening and closing door panel surface, the winding shaft is located on the panel surface of the opening and closing door close to the box body, the rotation axis of the winding shaft is perpendicular to the rotation axis of the opening and closing door, and a receiving cloth is rolled up on the winding shaft. The receiving part also includes a flattening part, and the flattening part is used to drive the receiving cloth to be flattened under the turntable to receive the injection molded part when the opening and closing door is opened.

[0010] By adopting the above technical solution, when the injection-molded parts are taken out, the opening of the box body is opened by rotating the opening and closing door. At this time, under the action of the flattening member, the receiving cloth is flattened under the turntable, and the demoulded injection-molded parts fall onto the receiving cloth, which makes it easier for the staff to take out the injection-molded parts. At the same time, the receiving cloth has flexible physical characteristics, which reduces the possibility of damage to the injection-molded parts during the falling process.

[0011] Optionally, the flattening member includes multiple groups of support members, each group of support members includes two support rods hinged to each other, the middle parts of the two support rods are hinged to each other, the ends of the two support rods close to the opening and closing door are hinged to the opening and closing door, the ends of each adjacent group of support rods are hinged to each other, the hinge axes of the support rods and the opening and closing door, the hinge axes of the two support rods in each group, and the hinge axes of each adjacent group of support rods are parallel to the hinge axes of the opening and closing door, the ends of a group of support rods facing away from the opening and closing door are hinged with flattening rods, the ends of the receiving cloth are fixedly set on the flattening rods, and the receiving cloth is located above the support rods. The flattening member also includes a second driving member for driving the support rods to rotate and drive the flattening rods to move in a direction away from the closing door.

[0012] By adopting the above technical solution, after the opening and closing door is opened, the support rods are driven to rotate under the action of the second driving member, and each group of support rods rotates in the direction of approaching each other, thereby driving the flattening rods to translate in the direction away from the closing door. When the flattening rods translate, they drive the receiving cloth rolled up on the winding shaft to be spread flat between the opening and closing doors, and the injection molded parts fall from the turntable onto the receiving cloth, and the receiving cloth is located outside the box, thereby facilitating the taking and placing of the injection molded parts; at the same time, the rotation axis of the support rods is parallel to the rotation axis of the opening and closing door, so that the support rods and the flattening rods are perpendicular to the plane of the opening and closing door after being flattened, thereby facilitating the receiving of the injection molded parts.

[0013] Optionally, the second driving member includes a first spring arranged on the opening and closing door, the length direction of the first spring is perpendicular to the plane where the opening and closing door is located, and the flattening rod is fixedly arranged at the end of the first spring facing away from the closing door.

[0014] By adopting the above technical solution, after the opening and closing door is opened, under the action of the first spring, the flattening rod is driven to move horizontally in the direction away from the closing door, thereby driving the receiving cloth to be flattened on the support rod, which is simple and convenient to operate.

[0015] Optionally, a pull rope is fixedly provided at the midline of the flattening rod, the pull rope passes through the opening and closing door, and a fixing member for fixing the flattening rod to the opening and closing door is provided on the opening and closing door.

[0016] By adopting the above technical solution, before injection molding, the pull rope is pulled, and the pull rope drives the flattening rod to move horizontally toward the opening and closing door. When the flattening rod abuts against the opening and closing door, the flattening rod is fixed to the opening and closing door under the action of the fixing part, thereby facilitating the closing of the opening and closing door, and then facilitating the related work of injection molding.

[0017] Optionally, a storage groove is provided on the opening and closing door, the length direction of the storage groove is parallel to the length direction of the flattening rod, the support rod close to the opening and closing door is hinged on the bottom wall of the storage groove, the fixing part includes a fixing block slidably arranged at the end of the flattening rod, the sliding direction of the fixing block is parallel to the length direction of the flattening rod, and the end wall of the storage groove is provided with a clamping groove for the fixing block to be clamped.

[0018] By adopting the above technical solution, the pull rope drives the flattening rod, and the flattening rod moves toward the storage slot. When the fixed block abuts against the side wall of the storage slot opening, the fixed block slides toward the center line of the flattening rod. When the fixed block enters the storage slot, the fixed block slides toward the clamping slot and is clamped in the clamping slot, thereby clamping the flattening rod in the storage slot. The operation is simple and convenient.

[0019] Optionally, the cross section of the fixing block is triangular, and the inclined surface of the fixing block is arranged toward the end wall of the receiving groove.

[0020] By adopting the above technical solution, the cross-section of the fixing block is triangular, which makes it easy for the fixing block to enter the storage groove; at the same time, it is easy for the fixing block to be clamped in the clamping groove to fix the flattening rod.

[0021] Optionally, a pressing block is slidingly provided on the opening and closing door, and the sliding direction of the pressing block is perpendicular to the plane where the opening and closing door is located. The sliding path of the pressing block passes through the clamping groove, and the pressing block is located on the inclined surface of the fixed block at the end of the clamping groove. When the pressing block slides toward the clamping groove, it drives the fixed block to slide in the direction away from the clamping groove.

[0022] By adopting the above technical solution, after the opening and closing door is opened, the pressing block is squeezed, the pressing block slides toward the fixed block, and the fixed block is squeezed, the fixed block is squeezed and slides in the direction away from the clamping groove, so that the fixed block is disengaged from the clamping groove to release the fixation of the flattening rod, thereby making it easier for the flattening rod to drive the receiving cloth to be flattened between the opening and closing doors.

[0023] Optionally, a blocking rod is fixedly provided at the end of the pull rope facing away from the flattening rod, and the length of the blocking rod is greater than the diameter of the through hole on the opening and closing door for the pull rope to pass through.

[0024] By adopting the above technical solution, under the action of the blocking rod, the possibility of the tiling rod being stretched and separated from the closing plate when it is translated in the direction away from the closing plate is reduced; at the same time, under the action of the blocking rod, the translation range of the tiling rod is limited, reducing the possibility of the tiling rods colliding with each other.

[0025] Optionally, the first driving member includes an electric push rod hinged on the turntable, the rotation axis of the electric push rod is parallel to the rotation axis of the fixed plate, and the end surface of the fixed plate close to the turntable is hinged to the output shaft of the electric push rod.

[0026] By adopting the above technical solution, the electric push rod is started, which drives the fixed plate to rotate in the direction away from the turntable, thereby driving the lower mold and the upper mold to be in an inclined state, which is simple and convenient to operate.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. After the injection molded part is formed, the turntable rotates to drive the fixed plate, lower mold, and upper mold to rotate toward the opening of the box. Then, the first driving member drives the fixed plate to rotate, and the rotation of the fixed plate drives the lower mold and upper mold to rotate, so that the demoulded injection molded part falls off toward the edge of the turntable and is received on the receiving member. The injection molded part is then removed, which is simple and convenient to operate. Furthermore, the above process reduces the need to enter the box to remove materials, thereby improving the safety of workers and facilitating the removal of injection molded parts.

[0029] 2. Under the action of the blocking rod, the possibility of the tiling rod being stretched and separated from the closing plate when it is translated in the direction away from the closing plate is reduced; at the same time, under the action of the blocking rod, the translation range of the tiling rod is limited, reducing the possibility of the tiling rods colliding with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a multi-color plastic injection molding machine according to an embodiment of the present application;

[0031] Figure 2 This is a schematic structural diagram of a mounting slot in a multi-color plastic injection molding machine according to an embodiment of the present application;

[0032] Figure 3 This is a cross-sectional view of an opening and closing door in a multi-color plastic injection molding machine according to an embodiment of the present application, intended to illustrate a reel;

[0033] Figure 4 This is a schematic structural diagram of a support rod in a multi-color plastic injection molding machine according to an embodiment of the present application;

[0034] Figure 5 yes Figure 4 A magnified schematic diagram of part A;

[0035] Figure 6 This is a cross-sectional view of a flattening rod in a multi-color plastic injection molding machine according to an embodiment of the present application;

[0036] Figure 7 yes Figure 6 An enlarged schematic diagram of part B;

[0037] Figure 8 This is a cross-sectional view of an opening and closing door in a multi-color plastic injection molding machine according to an embodiment of the present application, intended to illustrate a pressing block.

[0038] Explanation of reference numerals: 1. Box body; 2. Opening and closing door; 3. Turntable; 4. Fixing plate; 5. Lower mold; 6. Upper mold; 7. Electric push rod; 8. Mounting slot;

[0039] 9. Receiver; 91. Reel; 92. Receiver fabric; 93. Support rod; 94. Spreading rod; 95. First spring;

[0040] 10. Pull rope; 11. Storage slot; 12. Fixing block; 13. Snap-in slot; 14. Second spring; 15. Volute spring; 16. Pressing block; 17. Slide slot; 18. Blocking rod. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-8 This application is described in further detail.

[0042] The embodiment of the present application discloses a multi-color plastic injection molding machine. Figure 1 and Figure 2The multi-color plastic injection molding machine includes a box body 1, which is hollow inside. An opening and closing door 2 for closing the box body 1 is hinged on the box body 1. The opening and closing door 2 is provided with two leaves, and the two opening and closing doors 2 are symmetrically arranged along the center line of the box body 1; a turntable 3 is rotatably provided in the box body 1, and the turntable 3 is disc-shaped. Two fixed plates 4 are provided on the turntable 3, and the two fixed plates 4 are symmetrically arranged along the center of the turntable 3; further, a lower mold 5 and an upper mold 6 are provided on the fixed plate 4, and a mold cavity for molding injection molded parts is formed between the upper mold 6 and the lower mold 5 The fixed plate 4 is hinged on the turntable 3, and the hinge axis of the fixed plate 4 is parallel to the plane of the turntable 3 and close to the edge of the turntable 3. The turntable 3 is provided with a first driving member for driving the fixed plate 4 to rotate and drive the injection molded part to dump toward the opening of the box body 1; after the injection molded part is formed in the mold cavity, the upper mold 6 slides in the direction away from the lower mold 5, and then the first driving force drives one side of the fixed plate 4 to rotate in the direction away from the turntable 3, so that the fixed plate 4 is in an inclined state, and the injection molded part is removed from the lower mold 5 under the action of gravity.

[0043] Reference Figure 1 and Figure 2 In this embodiment of the present application, the first driving member includes an electric push rod 7 hinged to the turntable 3. In this embodiment of the present application, a mounting slot 8 is defined on the surface of the turntable 3, and the electric push rod 7 is positioned within the mounting slot 8. The electric push rod 7 is tilted away from the bottom wall of the mounting slot 8. The rotation axis of the electric push rod 7 is parallel to the rotation axis of the fixed plate 4. The end surface of the fixed plate 4 closest to the turntable 3 is hinged to the output shaft of the electric push rod 7. When the electric push rod 7 is activated, the output shaft of the electric push rod 7 drives the fixed plate 4 to rotate, placing the fixed plate 4 in a tilted state, making operation simple and convenient.

[0044] Reference Figure 3 In order to facilitate the reception of the fallen injection molded parts, the plastic injection molding machine also includes a receiving part 9, which is used to receive the injection molded parts when they fall from the mold. The receiving part 9 includes a reel-up shaft 91 rotatably arranged on the plate surface of the opening and closing door 2. The reel-up shaft 91 is located on the plate surface of the opening and closing door 2 close to the box body 1. The rotation axis of the reel-up shaft 91 is perpendicular to the rotation axis of the opening and closing door 2 and parallel to the plane where the turntable 3 is located. A receiving cloth 92 is rolled up on the reel-up shaft 91. The receiving cloth 92 is an elastic cloth. The receiving part 9 also includes a flattening part. The flattening part is used to drive the receiving cloth 92 to be flattened under the turntable 3 to receive the injection molded parts when the opening and closing door 2 is opened.

[0045] Reference Figure 3 and Figure 4In the embodiment of the present application, the flattening member includes multiple groups of support members, each group of support members includes two support rods 93 hinged to each other, the middle parts of the two support rods 93 are hinged to each other, the two support rods 93 in each group of support members are scissor-shaped, the ends of the two support rods 93 close to the opening and closing door 2 are hinged on the opening and closing door 2, and the hinged ends of the support rods 93 are slidably set on the opening and closing door 2, the ends of each adjacent group of support rods 93 are hinged to each other, the hinge axis of the support rods 93 and the opening and closing door 2, the hinge axis of the two support rods 93 in each group and the hinge axis of each adjacent group of support rods 93 are parallel to the hinge axis of the opening and closing door 2, the end of a group of support rods 93 facing away from the closing door 2 is hinged with a flattening rod 94, and the hinged ends of the support rods 93 and the flattening rod 94 are set on the flattening rod 94, combined with Figure 5 The rotation axis of the flattening rod 94 and the support rod 93 is parallel to the rotation axis of the opening and closing door 2, and the length direction of the flattening rod 94 is parallel to the plane where the opening and closing door 2 is located. The end of the receiving cloth 92 is fixed on the flattening rod 94, and the receiving cloth 92 is located above the support rod 93.

[0046] After the injection molded part is formed, the opening and closing door 2 is rotated to open the box body 1, and then the flattening rod 94 is pulled. The flattening rod 94 drives the receiving cloth 92 to fall off the unwinding shaft and is received on the support rod 93, so that the receiving cloth 92 is spread flat under the turntable 3. When the injection molded part is moved out, the injection molded part falls on the receiving cloth 92, reducing the possibility of damage to the injection molded part.

[0047] Reference Figure 6 In order to facilitate the translation of the flattening rod 94 to drive the receiving cloth 92 to be spread flat on the support rod 93, the flattening part also includes a second driving part for driving the support rod 93 to rotate and drive the flattening rod 94 to move toward the direction away from the closing door 2. The second driving part includes a first spring 95 fixedly arranged on the opening and closing door 2. The length direction of the first spring 95 is perpendicular to the plane where the opening and closing door 2 is located, and the flattening rod 94 is fixedly arranged at the end of the first spring 95 away from the closing door 2; after the opening and closing door 2 is opened, under the action of the first spring 95, the flattening rod 94 is driven to translate toward the direction away from the closing door 2, and the operation is simple and convenient; at the same time, under the action of the support rod 93, the length direction of the first spring 95 is limited, so that the first spring 95 can push the flattening rod 94 to translate toward the direction away from the closing door 2.

[0048] Reference Figure 6In order to facilitate the recovery of the flattening rod 94 to the opening and closing door 2, a pull rope 10 is fixed at the center line of the flattening rod 94. The pull rope 10 passes through the opening and closing door 2. A storage groove 11 is provided on the opening and closing door 2. The positive projection of the flattening rod 94 on the opening and closing door 2 is located in the storage groove 11. The length direction of the storage groove 11 is parallel to the length direction of the flattening rod 94. The support rod 93 close to the opening and closing door 2 is hinged on the bottom wall of the storage groove 11; pulling the pull rope 10 drives the flattening rod 94 to move horizontally toward the opening and closing door 2, which is convenient for rotating the opening and closing door 2 to close the box body 1 later; combined with Figure 7 and Figure 8 The opening and closing door 2 is provided with a fixing part for fixing the flattening rod 94 to the opening and closing door 2, and the fixing part includes a fixing block 12 slidably set at the end of the flattening rod 94. Furthermore, the fixing block 12 is slidably passed through the flattening rod 94, and the sliding direction of the fixing block 12 is parallel to the length direction of the flattening rod 94. The end wall of the storage groove 11 is provided with a clamping groove 13 for the fixing block 12 to be clamped. Furthermore, there are two fixing blocks 12 and they are respectively located at the ends of the flattening rod 94. Two second springs 14 are sleeved on the flattening rod 94. The two second springs 14 are arranged one-to-one corresponding to the fixing block 12. One end of the second spring 14 is fixedly set on the flattening rod 94, and the other end is fixedly set on the fixing block 12.

[0049] When the flattening rod 94 enters the storage slot 11 driven by the pull rope 10, the fixing block 12 enters the storage slot 11 through the opening of the storage slot 11, and then enters the clamping slot 13, thereby fixing the flattening rod 94 in the storage slot 11. The operation is simple and convenient.

[0050] In the embodiment of the present application, the cross section of the fixing block 12 is triangular, and the inclined surface of the fixing block 12 is arranged toward the end wall of the receiving groove 11 .

[0051] Reference Figure 3 In order to facilitate the storage of the receiving cloth 92 when the flattening rod 94 is translated toward the opening and closing door 2, the winding shaft 91 is located in the storage groove 11 and is rotatably set in the storage groove 11. A spiral spring 15 is sleeved on the winding shaft 91. One side of the spiral spring 15 is fixed on the winding shaft 91, and the other side is fixed on the side wall of the storage groove 11; when the flattening rod 94 is translated toward the opening and closing door 2, under the action of the elastic force of the spiral spring 15, the winding shaft 91 is driven to rotate, and the winding shaft 91 rotates to reel in the receiving cloth 92.

[0052] Reference Figure 7 and Figure 8In order to facilitate the removal of the fixing block 12 from the card slot 13 to release the fixation of the flattening rod 94, a pressing block 16 is slidingly provided on the opening and closing door 2. Furthermore, a sliding groove 17 for the pressing block 16 to slide is provided on the opening and closing door 2. The axial direction of the sliding groove 17 is perpendicular to the plane where the opening and closing door 2 is located. The sliding direction of the pressing block 16 is perpendicular to the plane where the opening and closing door 2 is located. The sliding path of the pressing block 16 passes through the card slot 13. Further, the sliding groove 17 is connected to the card slot 13. The pressing block 16 is located in the card slot 1 3 abuts against the inclined surface of the fixing block 12, and when the pressing block 16 slides toward the clamping groove 13, it drives the fixing block 12 to slide in the direction away from the clamping groove 13; after the fixing block 12 enters the clamping groove 13, the inclined surface of the fixing block 12 abuts against the end surface of the fixing block 12; when the fixation of the fixing block 12 needs to be released, the pressing block 16 is squeezed, and the pressing block 16 drives the fixing block 12 to move in the direction of leaving the clamping groove 13, so that the fixing block 12 falls off from the clamping groove 13, thereby releasing the fixation of the paving rod 94.

[0053] Reference Figure 6 In order to facilitate the limitation of the translation distance of the flattening rod 94, a blocking rod 18 is fixedly provided at the end of the pull rope 10 away from the flattening rod 94, and the length of the blocking rod 18 is greater than the diameter of the through hole for the pull rope 10 to pass through the opening and closing door 2; when the flattening rod 94 translates toward the direction away from the closing door 2 under the action of the spring force, the flattening rod 94 drives the pull rope 10 to translate, and when the blocking rod 18 abuts against the opening and closing door 2, the flattening rod 94 is fixed at the above-mentioned position.

[0054] The implementation principle of a multi-color plastic injection molding machine in the embodiment of the present application is as follows:

[0055] After the injection molded product is formed, the turntable 3 is first rotated, and the turntable 3 drives the fixed block 12 to the opening of the box body 1, and then the opening and closing door 2 is rotated to open the opening of the box body 1;

[0056] The pressing block 16 is then pressed, and the pressing block 16 drives the fixing block 12 to slide in the direction of disengaging from the engaging groove 13, and disengages from the engaging groove 13. Under the action of the spring force, the flattening rod 94 is driven to move in the direction away from the closing door 2, and the flattening rod 94 drives the receiving cloth 92 to translate and drives the support rod 93 to rotate, and the support rod 93 receives the receiving cloth 92;

[0057] Then the electric push rod 7 is started, and the electric push rod 7 pushes the fixed plate 4 to rotate, and the injection molded part is removed from the mold and falls on the receiving cloth 92, so as to facilitate the removal of the injection molded part.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-color plastic injection molding machine, comprising a box (1), wherein the box (1) is hollow inside, an opening and closing door (2) is hinged on the box (1) for closing the box (1), a turntable (3) is rotatably arranged in the box (1), a fixed plate (4) is arranged on the turntable (3), and a lower mold (5) and an upper mold (6) are arranged on the fixed plate (4), characterized in that: The fixed plate (4) is hinged on the turntable (3), and the hinge axis of the fixed plate (4) is parallel to the plane of the turntable (3) and close to the edge of the turntable (3). The turntable (3) is provided with a first driving member for driving the fixed plate (4) to rotate and drive the injection molded part to fall toward the opening of the box body (1); the plastic injection molding machine also includes a receiving member (9), and the receiving member (9) is used to receive the injection molded part when the injection molded part falls from the mold; The receiving member (9) includes a reel (91) rotatably arranged on the plate surface of the opening and closing door (2), the reel (91) is located on the plate surface of the opening and closing door (2) close to the box body (1), the rotation axis of the reel (91) is perpendicular to the rotation axis of the opening and closing door (2), a receiving cloth (92) is rolled up on the reel (91), and the receiving member (9) also includes a flattening member, which is used to drive the receiving cloth (92) to be flattened under the turntable (3) when the opening and closing door (2) is opened to receive the injection molded part. The flattening member comprises a plurality of groups of support members, each group of support members comprises two support rods (93) hinged to each other, the middle parts of the two support rods (93) are hinged to each other, the ends of the two support rods (93) close to the opening and closing door (2) are hinged to the opening and closing door (2), the ends of the support rods (93) of each adjacent group are hinged to each other, the hinge axis of the support rods (93) and the opening and closing door (2), the hinge axis of the two support rods (93) in each group, and the hinge axis of each adjacent group of support rods The hinge axes of (93) are all parallel to the hinge axes of the opening and closing door (2), and the ends of a group of support rods (93) away from the opening and closing door (2) are hinged with a flattening rod (94), and the ends of the receiving cloth (92) are fixedly arranged on the flattening rod (94), and the receiving cloth (92) is located above the support rod (93). The flattening member also includes a second driving member for driving the support rod (93) to rotate and drive the flattening rod (94) to move in a direction away from the closing door (2).

2. The multi-color plastic injection molding machine according to claim 1, characterized in that: The second driving member comprises a first spring (95) arranged on the opening and closing door (2), the length direction of the first spring (95) is perpendicular to the plane where the opening and closing door (2) is located, and the flattening rod (94) is fixedly arranged at the end of the first spring (95) facing away from the closing door (2).

3. The multi-color plastic injection molding machine according to claim 2, characterized in that: A pull rope (10) is fixedly provided at the center line of the paving rod (94), and the pull rope (10) passes through the opening and closing door (2). The opening and closing door (2) is provided with a fixing member for fixing the paving rod (94) to the opening and closing door (2).

4. The multi-color plastic injection molding machine according to claim 3, characterized in that: The opening and closing door (2) is provided with a receiving groove (11), the length direction of the receiving groove (11) is parallel to the length direction of the flattening rod (94), the support rod (93) close to the opening and closing door (2) is hinged on the bottom wall of the receiving groove (11), the fixing member includes a fixing block (12) slidably arranged at the end of the flattening rod (94), the sliding direction of the fixing block (12) is parallel to the length direction of the flattening rod (94), and the end wall of the receiving groove (11) is provided with a clamping groove (13) for the fixing block (12) to be clamped.

5. The multi-color plastic injection molding machine according to claim 4, characterized in that: The cross section of the fixing block (12) is triangular, and the inclined surface of the fixing block (12) is arranged toward the end wall of the receiving groove (11).

6. The multi-color plastic injection molding machine according to claim 4, characterized in that: A pressing block (16) is slidably provided on the opening and closing door (2), the sliding direction of the pressing block (16) being perpendicular to the plane on which the opening and closing door (2) is located, the sliding path of the pressing block (16) passing through the clamping groove (13), the pressing block (16) being located on the inclined surface of the fixing block (12) where the end of the clamping groove (13) abuts against the fixing block (12), and when the pressing block (16) slides toward the clamping groove (13), it drives the fixing block (12) to slide in a direction away from the clamping groove (13).

7. The multi-color plastic injection molding machine according to claim 3, characterized in that: A blocking rod (18) is fixedly provided at the end of the pull rope (10) facing away from the paving rod (94), and the length of the blocking rod (18) is greater than the diameter of the through hole on the opening and closing door (2) for the pull rope (10) to pass through.

8. The multi-color plastic injection molding machine according to claim 1, characterized in that: The first driving member comprises an electric push rod (7) hinged on the turntable (3), the rotation axis of the electric push rod (7) is parallel to the rotation axis of the fixed plate (4), and the end surface of the fixed plate (4) close to the turntable (3) is hinged on the output shaft of the electric push rod (7).

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