Special-shaped thin-wall injection molding product mold structure and injection molding machine

Abstract

The invention relates to the technical field of injection molds, and discloses a special-shaped thin-wall injection molding product mold structure and an injection mold.The special-shaped thin-wall injection molding product mold structure comprises a fixed mold and a movable mold, the movable mold is driven by an electric telescopic mechanism, the fixed mold and the movable mold correspond to each other and are spliced along with movement, and a feeding pipe is arranged on the right side of the fixed mold; according to the special-shaped thin-wall injection molding product mold structure and the injection molding machine, by arranging the heating mechanisms and the swing assembly, during injection molding operation, the feeding pipe can be heated, and it is avoided that materials are slightly solidified in the feeding pipe, and normal injection molding is affected; and meanwhile, when hot water impacts on a barrier plate, a rotating rod can be controlled to drive a connecting plate to swing back and forth, materials in the feeding pipe are stirred to form vortexes, and therefore the effect of promoting material mixing is achieved, and the situation that the materials are mixed unevenly, and the injection molding effect is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a mold structure for a special-shaped thin-walled injection molded product and an injection molding machine. Background Art

[0002] Special-shaped thin-walled injection molds are special molds used to produce thin-walled plastic products. Thin-walled injection molded products generally refer to plastic products with a wall thickness of less than 1mm, or even less than 0.5mm. This type of mold is unique in design and manufacturing, because thin-walled products have high requirements for molding technology, and the mold needs to be able to quickly fill the plastic melt into the cavity and ensure the quality of the product.

[0003] When producing some injection molded products, some special textures are required on the surface, such as marble, wood grain or plastic products with gradient color effects. It is necessary to mix plastic raw materials of different colors, and perform injection molding by mixing and melting the plastic raw materials. However, during the injection molding process, when the raw materials enter the injection mold through the injection molding pipeline, they are likely to be mixed unevenly, resulting in uneven color distribution. For example, the local color is too dark or too light, and the expected aesthetic effect cannot be achieved. The product may not be sold due to appearance defects. For this reason, we propose a mold structure and injection molding machine for special-shaped thin-walled injection molding products. Summary of the invention

[0004] The object of the present invention is to provide a mold structure for a special-shaped thin-walled injection molded product and an injection molding machine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mold structure for a special-shaped thin-walled injection mold, comprising a fixed mold and a movable mold, the movable mold being driven by an electric telescopic mechanism, the fixed mold and the movable mold corresponding to each other, and spliced ​​with the moving phase, a feed pipe is arranged on the right side of the fixed mold, a heating mechanism is arranged on the surface of the feed pipe, and the top of the fixed mold and the movable mold, a swinging component for promoting material mixing is arranged on the surface and inside of the feed pipe, and a driven component for flipping the material is arranged inside the feed pipe.

[0006] Preferably, the heating mechanism comprises a hot water tank, a connecting pipe is sleeved on the surface of the feed pipe, a spiral groove is provided on the inner side of the connecting pipe and the surface of the feed pipe, both ends of the connecting pipe are connected with the hot water tank through a circulating water pipe, a valve is provided on the circulating water pipe, a toothed ring is fixed on the surface of the valve, the toothed ring is meshed with a connecting rack, the connecting rack is slidably mounted on the top of the fixed mold, a spring sheet is fixed on the bottom of the connecting rack, one end of the spring sheet away from the connecting rack is fixed to the right side of the fixed mold, an abutment block is fixed on the top of the movable mold, when the hot water in the hot water tank enters the connecting pipe, the fast water flow pumped by the pump can only flow through the spiral grooves on the connecting pipe and the feed pipe, Since the spiral through groove is spiral, the contact time between the hot water and the feed pipe is further increased, thereby improving the heating effect on the feed pipe and avoiding slight solidification of the material in the feed pipe, which affects normal injection molding. When the fixed mold and the movable mold are spliced ​​and closed, the abutment block on the top of the movable mold can abut on the connecting rack, and the connecting rack moves to the right to drive the gear ring and the valve to rotate, thereby opening the circulating water pipe, so that the hot water in the hot water tank can be pumped into the circulating water pipe and then enter the connecting pipe. When the fixed mold and the movable mold are separated, under the action of the spring, the connecting rack can move to the left and reset, and at this time the gear ring and the valve rotate in the opposite direction, and the valve is closed, so that the hot water can no longer enter the circulating water pipe, completing the closure.

[0007] Preferably, the swing assembly includes a rotating rod, which passes through the feed pipe and is rotatably connected to the feed pipe, and the end of the rotating rod away from the connecting pipe is fixed with a connecting plate, the surface of the rotating rod is fixed with a volute spring, the end of the volute spring away from the rotating rod is fixed to the inner side of the connecting tube, the surface of the rotating rod is hinged with a blocking plate, the surface of the feeding tube is fixed with a fixing ring, the top of the fixing ring is provided with an arc groove, the surface of the rotating rod is provided with a groove, a stopper is slidably installed on the inner side of the groove, and an insertion rod is fixed to one end of the stopper close to the connecting plate, and the end of the insertion rod away from the stopper is inserted into the inner side of the arc groove, and a sealed bearing is provided at the connection position of the rotating rod and the feeding pipe, which can ensure the sealing of the connection position of the rotating rod and the feeding pipe without affecting the normal rotation of the rotating rod, and the stopper can support the blocking plate, and when the hot water pumped enters the spiral through groove, the hot water impacts on the blocking plate, so that the blocking plate The plate drives the rotating rod to rotate 90°, and the rotating rod drives the stopper to rotate. The stopper drives the plug rod to slide along the arc groove, and the plug rod is resisted by the arc groove. The plug rod drives the stopper to move closer to the inner side of the groove, and the stopper no longer supports the blocking plate, and then the blocking plate can swing to the position where the rotating rod is hinged, so that the hot water can not continue to produce enough impact on the blocking plate. At this time, the rotating rod can rotate in the opposite direction under the action of the spiral spring. When the rotating rod is fully reset, the plug rod continues to slide along the arc groove, so that the plug rod drives the stopper to reset, and the stopper resists the blocking plate, so that the blocking plate rotates again to a state perpendicular to the rotating rod. At this time, the blocking plate is impacted and the rotating rod rotates 90° again. Repeat the above steps, the rotating rod rotates back and forth, and the rotating rod drives the connecting plate to swing back and forth. The connecting plate swings back and forth in the feed pipe, and the material in the feed pipe is stirred to form a vortex, thereby promoting the mixing of the materials and avoiding uneven mixing of the materials, which affects the injection molding effect.

[0008] When the lifting plate is lifted up, the lifting plate is lifted up and the lifting plate is automatically lifted up, so that the lifting plate can be lifted up and the lifting plate can be automatically lifted up when the lifting plate is lifted.

[0009] Preferably, the lifting plate is provided with an auxiliary component, the auxiliary component includes a movable groove, the movable groove is opened on the surface of the lifting plate, an elastic telescopic rod is fixed on the inner side of the movable groove, a connecting block is fixed on the end of the elastic telescopic rod away from the movable groove, a vertical rod is slidably mounted on the surface of the connecting block, a lever is fixed on the side of the vertical rod away from the connecting block, a pull rope is fixed on the side of the connecting block away from the vertical rod, one end of the pull rope away from the connecting block is fixed to the surface of the connecting plate, a wave groove is opened on the inner side of the movable groove, a connecting rod is fixed on the surface of the vertical rod, and one end of the connecting rod away from the vertical rod is inserted into the wave groove When the lifting plate moves upward, the lifting plate moves upward with the auxiliary assembly. At this time, the connecting block is pulled by the pull rope to move toward the side close to the elastic telescopic rod, so that the elastic telescopic rod is compressed. When the lifting plate moves downward, the pull rope is no longer tight. Under the action of the elastic telescopic rod, the connecting block moves with the vertical rod to the side away from the elastic telescopic rod, thereby realizing back and forth movement. In the process of the vertical rod moving back and forth, the connecting rod moves up and down along the wave groove, thereby controlling the vertical rod and the shifting rod to move up and down, thereby realizing further stirring of the material, which not only improves the material mixing effect, but also can eliminate bubbles in the material to avoid affecting normal injection molding.

[0010] The present invention also proposes an injection molding machine, including an injection molding mechanism, wherein a fixed mold and a movable mold are arranged inside the injection molding mechanism, the electric telescopic mechanism is arranged on the side wall of the injection molding mechanism, and the top of the injection molding mechanism is connected to the bottom of the hot water tank.

[0011] Compared with the prior art, the present invention provides a mold structure for a special-shaped thin-walled injection molded product and an injection molding machine, which have the following beneficial effects:

[0012] 1. The mold structure and injection molding machine for special-shaped thin-walled injection molding products can heat the feed pipe during the injection molding operation through the arranged heating mechanism and swinging assembly to avoid the material from being slightly solidified in the feed pipe and affecting the normal injection molding; at the same time, when the hot water impacts the blocking plate, the rotating rod can be controlled to drive the connecting plate to swing back and forth, and the material in the feed pipe can be moved to form a vortex, thereby promoting the mixing of the materials and avoiding uneven mixing of the materials and affecting the injection molding effect.

[0013] 2. The mold structure and injection molding machine for special-shaped thin-walled injection molding products can control the lifting plate to move up and down by setting a swinging component and a driven component when the connecting plate swings back and forth, so as to turn over the material at the bottom of the feed pipe, avoid material sedimentation, and further improve the mixing effect of the material.

[0014] 3. The mold structure and injection molding machine of the special-shaped thin-wall injection molding product are provided with a swinging component, a driven component and an auxiliary component. When the lifting plate is controlled to move upward, the lifting plate moves upward with the auxiliary component. At this time, the connecting block is pulled by the pull rope to move toward the side close to the elastic telescopic rod, so that the elastic telescopic rod is compressed. When the lifting plate moves downward, the pull rope is no longer tight. Under the action of the elastic telescopic rod, the connecting block moves with the vertical rod to the side away from the elastic telescopic rod, thereby realizing back and forth movement. In the process of the vertical rod moving back and forth, the connecting rod moves up and down along the wave groove, thereby controlling the vertical rod and the lever to move up and down, realizing further stirring of the material, which not only improves the material mixing effect, but also can eliminate bubbles in the material to avoid affecting normal injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall front view structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the overall cross-section front view structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the connection structure of the fixed mold, the movable mold and the heating mechanism of the present invention;

[0018] Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the connecting pipe and the feeding pipe of the present invention;

[0020] Figure 6 It is a schematic diagram of the connection structure of the swing assembly, the driven assembly and the auxiliary assembly of the present invention;

[0021] Figure 7 For the present invention Figure 6 Middle B is a schematic diagram of the enlarged structure;

[0022] Figure 8 It is a schematic diagram of the auxiliary component structure of the present invention;

[0023] Fig. 9 This is a schematic diagram of the structure of the movable slot on the lifting plate of the present invention.

[0024] In the figure: 11, fixed mold; 12, movable mold; 13, electric telescopic mechanism; 2, heating mechanism; 21, hot water tank; 22, connecting pipe; 23, spiral groove; 24, circulating water pipe; 25, valve; 26, gear ring; 27, connecting rack; 28, spring; 29, resistance block; 3, swing assembly; 31, rotating rod; 32, connecting plate; 33, scroll spring; 34, blocking plate; 35, fixed ring ; 36. arc groove; 37. groove; 38. stopper; 39. plug rod; 4. driven component; 41. cross bar; 42. lifting plate; 43. support rod; 44. hinged rod; 45. slide rod; 5. auxiliary component; 51. movable groove; 52. elastic telescopic rod; 53. connecting block; 54. vertical rod; 55. lever; 56. pull rope; 57. wave groove; 58. connecting rod; 6. injection molding mechanism; 7. feed pipe. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 9 As shown, the present invention provides a technical solution: a mold structure for a special-shaped thin-walled injection molded product, comprising a fixed mold 11 and a movable mold 12, the movable mold 12 is driven by an electric telescopic mechanism 13, the fixed mold 11 and the movable mold 12 correspond to each other, and are spliced ​​with the moving phase, a feed pipe 7 is arranged on the right side of the fixed mold 11, a heating mechanism 2 is arranged on the surface of the feed pipe 7, the top of the fixed mold 11 and the movable mold 12, a swinging component 3 for promoting material mixing is arranged on the surface and inside of the feed pipe 7, and a driven component 4 for flipping the material is arranged inside the feed pipe 7.

[0026] Among them, the heating mechanism 2 includes a hot water tank 21, a connecting pipe 22 is sleeved on the surface of the feed pipe 7, a spiral groove 23 is opened on the inner side of the connecting pipe 22 and the surface of the feed pipe 7, both ends of the connecting pipe 22 are connected to the hot water tank 21 through a circulating water pipe 24, a valve 25 is arranged on the circulating water pipe 24, a gear ring 26 is fixed on the surface of the valve 25, the gear ring 26 is meshed with a connecting rack 27, the connecting rack 27 is slidably installed on the top of the fixed mold 11, a spring piece 28 is fixed on the bottom of the connecting rack 27, the end of the spring piece 28 away from the connecting rack 27 is fixed to the right side of the fixed mold 11, and a resistance block 29 is fixed on the top of the movable mold 12.

[0027] Specifically, the hot water tank 21 is provided with a heating coil and a water pump therein. The heating coil is used to heat the water in the hot water tank 21. The water pump is used to pump water, which returns to the hot water tank 21 through the circulating water pipe 24 and the connecting pipe 22 to realize water circulation. The hot water tank 21 is an existing disclosed technology with mature existing products, so it is not elaborated on in detail. When the hot water in the hot water tank 21 enters the connecting pipe 22, the fast water flow pumped can only flow through the connecting pipe 22 and the spiral groove 23 on the feeding pipe 7. Since the spiral groove 23 is spiral, the contact time between the hot water and the feeding pipe 7 is further increased, thereby improving the heating effect of the feeding pipe 7 and avoiding the material from being heated. There is a slight solidification in the feed pipe 7, which affects the normal injection molding. When the fixed mold 11 and the movable mold 12 are spliced ​​and closed, the abutment block 29 on the top of the movable mold 12 can abut on the connecting rack 27, and the connecting rack 27 moves to the right to drive the gear ring 26 and the valve 25 to rotate, thereby opening the circulating water pipe 24, so that the hot water in the hot water tank 21 can be pumped into the circulating water pipe 24 and then enter the connecting pipe 22. When the fixed mold 11 and the movable mold 12 are separated, under the action of the spring 28, the connecting rack 27 can move to the left and reset. At this time, the gear ring 26 and the valve 25 rotate in the opposite direction, and the valve 25 is closed, so that the hot water can no longer enter the circulating water pipe 24, completing the closure.

[0028] The swing assembly 3 includes a rotating rod 31, which passes through the feed pipe 7 and is rotatably connected to the feed pipe 7. A connecting plate 32 is fixed to the end of the rotating rod 31 away from the connecting pipe 22. A volute spring 33 is fixed to the surface of the rotating rod 31. The end of the volute spring 33 away from the rotating rod 31 is fixed to the inner side of the connecting pipe 22. A blocking plate 34 is hinged on the surface of the rotating rod 31. A fixing ring 35 is fixed to the surface of the feed pipe 7. An arc groove 36 is provided on the top of the fixing ring 35. A groove 37 is provided on the surface of the rotating rod 31. The inner side of the groove 37 is slidably mounted. There is a stopper 38, and an insertion rod 39 is fixed at one end of the stopper 38 close to the connecting plate 32. The end of the insertion rod 39 away from the stopper 38 is inserted into the inner side of the arc groove 36. A sealed bearing is provided at the connection position of the rotating rod 31 and the feeding pipe 7 to ensure the sealing of the connection position of the rotating rod 31 and the feeding pipe 7 without affecting the normal rotation of the rotating rod 31. The stopper 38 can support the blocking plate 34. When the hot water pumped by the pump enters the spiral groove 23, the hot water impacts the blocking plate 34, so that the blocking plate 34 drives the rotating rod 31 to rotate 90° The rotating rod 31 drives the stopper 38 to rotate, and the stopper 38 slides along the arc groove 36 with the plug rod 39. The plug rod 39 is resisted by the arc groove 36, and the plug rod 39 moves with the stopper 38 to the inner side of the groove 37. The stopper 38 no longer supports the blocking plate 34, and then the blocking plate 34 can swing to the position where it is hinged with the rotating rod 31, so that the hot water can no longer generate enough impact on the blocking plate 34. At this time, the rotating rod 31 can rotate in the opposite direction under the action of the spiral spring 33. When the rotating rod 31 is completely reset, the plug rod 39 continues to slide along the arc groove 3 6 slides, so that the insertion rod 39 drives the stopper 38 to reset, and the stopper 38 contacts the blocking plate 34, so that the blocking plate 34 rotates again to a state perpendicular to the rotating rod 31. At this time, the blocking plate 34 is impacted to make the rotating rod 31 rotate 90 degrees again, and the above steps are repeated. The rotating rod 31 rotates back and forth, and the rotating rod 31 drives the connecting plate 32 to swing back and forth. The connecting plate 32 swings back and forth in the feeding pipe 7, and the material in the feeding pipe 7 is moved to form a vortex, thereby promoting the mixing of the materials, avoiding uneven mixing of the materials and affecting the injection molding effect.

[0029] In addition, the driven assembly 4 includes a cross bar 41, which is slidably mounted on the surface of the connecting plate 32, and a lifting plate 42 is slidably mounted on the surface of the connecting plate 32. A support rod 43 is hinged at one end of the cross bar 41 close to the lifting plate 42, and an end of the support rod 43 away from the cross bar 41 is hinged on one side of the lifting plate 42. A hinge rod 44 is hinged on the other side of the lifting plate 42, and an end of the hinge rod 44 away from the lifting plate 42 is hinged to a slide rod 45, and the slide rod 45 is slidably mounted on the surface of the connecting plate 32. When the connecting plate 32 swings to one side, the cross bar 41 is abutted by the inner wall of the feed pipe 7. , the cross bar 41 moves to the side close to the center of the connecting plate 32, and the cross bar 41 can push the lifting plate 42 to move upward through the support rod 43. When the connecting plate 32 swings to the other side, the sliding bar 45 is resisted by the inner wall of the feeding pipe 7, and the sliding bar 45 moves to the side close to the center of the connecting plate 32. The sliding bar 45 can push the lifting plate 42 to move downward through the hinge rod 44. As the connecting plate 32 swings back and forth, the lifting plate 42 can be controlled to move up and down, thereby turning over the material at the bottom of the feeding pipe 7 to avoid material sedimentation and further improve the mixing effect of the material.

[0030] An auxiliary component 5 is provided on the lifting plate 42, and the auxiliary component 5 includes a movable groove 51, which is opened on the surface of the lifting plate 42, an elastic telescopic rod 52 is fixed on the inner side of the movable groove 51, and a connecting block 53 is fixed on the end of the elastic telescopic rod 52 away from the movable groove 51, a vertical rod 54 is slidably installed on the surface of the connecting block 53, a lever 55 is fixed on the side of the vertical rod 54 away from the connecting block 53, a pull rope 56 is fixed on the side of the connecting block 53 away from the vertical rod 54, and one end of the pull rope 56 away from the connecting block 53 is fixed to the surface of the connecting plate 32, a wave groove 57 is opened on the inner side of the movable groove 51, a connecting rod 58 is fixed on the surface of the vertical rod 54, and one end of the connecting rod 58 away from the vertical rod 54 is inserted into the inner side of the wave groove 57.

[0031] It is worth noting that the elastic telescopic rod 52 is composed of a spring and a telescopic rod. The spring is arranged inside the telescopic rod to provide elastic potential energy. It is a simple structural assembly. When the lifting plate 42 moves upward, the lifting plate 42 moves upward with the auxiliary component 5. At this time, the connecting block 53 is pulled by the pull rope 56 to move toward the side close to the elastic telescopic rod 52, so that the elastic telescopic rod 52 is compressed. When the lifting plate 42 moves downward, the pull rope 56 is no longer tight. Under the action of the elastic telescopic rod 52, the connecting block 53 moves with the vertical rod 54 to the side away from the elastic telescopic rod 52, thereby realizing back and forth movement. In the process of the vertical rod 54 moving back and forth, the connecting rod 58 moves up and down along the wave groove 57, thereby controlling the vertical rod 54 and the lever 55 to move up and down, thereby realizing further stirring of the material, which not only improves the material mixing effect, but also can eliminate bubbles in the material to avoid affecting normal injection molding.

[0032] This embodiment also proposes an injection molding machine, including an injection molding mechanism 6, wherein a fixed mold 11 and a movable mold 12 are arranged inside the injection molding mechanism 6, an electric telescopic mechanism 13 is arranged on the side wall of the injection molding mechanism 6, and the top of the injection molding mechanism 6 is connected to the bottom of the hot water tank 21.

[0033] As an application of this embodiment:

[0034] During the injection molding process, the injection molding mechanism 6 performs a hot-melt treatment on the raw material, and enters the fixed mold 11 through the feed pipe 7 for injection molding operation. Prior to this, the electric telescopic mechanism 13 drives the movable mold 12 to move, so that the movable mold 12 and the fixed mold 11 are spliced ​​and closed.

[0035] When the fixed mold 11 and the movable mold 12 are spliced ​​and closed, the injection molding mechanism 6 starts the injection molding operation. At the same time, the abutment block 29 on the top of the movable mold 12 can abut on the connecting rack 27. The connecting rack 27 moves to the right to drive the gear ring 26 and the valve 25 to rotate, thereby opening the circulating water pipe 24, so that the hot water in the hot water tank 21 can be pumped into the circulating water pipe 24 and then enter the connecting pipe 22, so as to heat the feed pipe 7 and avoid the material in the feed pipe 7 from being slightly solidified, which affects the normal injection molding operation.

[0036] As the hot water moves in the spiral groove 23, the hot water impacts the blocking plate 34, so that the blocking plate 34 drives the rotating rod 31 to rotate 90 degrees, and the rotating rod 31 drives the stopper 38 to rotate. The stopper 38 slides along the arc groove 36 with the insertion rod 39, and the insertion rod 39 is resisted by the arc groove 36. The insertion rod 39 moves with the stopper 38 to the inner side of the groove 37, and the stopper 38 no longer supports the blocking plate 34, so that the blocking plate 34 can swing to the position where it is hinged with the rotating rod 31, so that the hot water can no longer generate sufficient impact on the blocking plate 34. At this time, the rotating rod 31 can rotate in the opposite direction under the action of the spiral spring 33. When the rotating rod 31 is completely reset, the insertion rod 39 continues to slide along the arc groove 36, so that the insertion rod 39 drives the block 38 to reset, and the block 38 contacts the blocking plate 34, so that the blocking plate 34 rotates again to a state perpendicular to the rotating rod 31. At this time, the blocking plate 34 is impacted to make the rotating rod 31 rotate 90° again, and the above steps are repeated. The rotating rod 31 rotates back and forth, and the rotating rod 31 drives the connecting plate 32 to swing back and forth. The connecting plate 32 swings back and forth in the feeding pipe 7, and the material in the feeding pipe 7 is stirred to form a vortex, thereby promoting the mixing of the materials and avoiding uneven mixing of the materials, which affects the injection molding effect.

[0037] When the connecting plate 32 swings to one side, the cross bar 41 is resisted by the inner wall of the feed pipe 7, and the cross bar 41 moves to the side close to the center of the connecting plate 32. The cross bar 41 can push the lifting plate 42 to move upward through the support rod 43. When the connecting plate 32 swings to the other side, the sliding rod 45 is resisted by the inner wall of the feed pipe 7, and the sliding rod 45 moves to the side close to the center of the connecting plate 32. The sliding rod 45 can push the lifting plate 42 to move downward through the hinge rod 44. As the connecting plate 32 swings back and forth, the lifting plate 42 can be controlled to move up and down, thereby turning over the material at the bottom of the feed pipe 7 to avoid material sedimentation and further improve the mixing effect of the material.

[0038] When the lifting plate 42 moves upward, the lifting plate 42 moves upward with the auxiliary component 5. At this time, the connecting block 53 is pulled by the pull rope 56 to move toward the side close to the elastic telescopic rod 52, so that the elastic telescopic rod 52 is compressed. When the lifting plate 42 moves downward, the pull rope 56 is no longer tight. Under the action of the elastic telescopic rod 52, the connecting block 53 moves with the vertical rod 54 to the side away from the elastic telescopic rod 52, thereby realizing back and forth movement. In the process of the vertical rod 54 moving back and forth, the connecting rod 58 moves up and down along the wave groove 57, thereby controlling the vertical rod 54 and the lever 55 to move up and down, thereby realizing further stirring of the material, which not only improves the material mixing effect, but also can eliminate bubbles in the material to avoid affecting normal injection molding.

[0039] After the injection molding is completed, the injection molding mechanism 6 stops feeding. After cooling is completed, the electric telescopic mechanism 13 drives the movable mold 12 to separate from the fixed mold 11. At this time, under the action of the spring 28, the connecting rack 27 can move to the left and reset. At this time, the gear ring 26 and the valve 25 rotate in opposite directions, and the valve 25 is closed, so that hot water can no longer enter the circulating water pipe 24, completing the closure.

[0040] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A mold structure for a special-shaped thin-walled injection molded product, comprising a fixed mold (11) and a movable mold (12), wherein the movable mold (12) is driven by an electric telescopic mechanism (13), the fixed mold (11) and the movable mold (12) correspond to each other and are spliced ​​with each other during movement, and characterized in that: A feed pipe (7) is arranged on the right side of the fixed mold (11); a heating mechanism (2) is arranged on the surface of the feed pipe (7), the top of the fixed mold (11) and the movable mold (12); a swinging assembly (3) for promoting material mixing is arranged on the surface and inside of the feed pipe (7); a driven assembly (4) for turning the material is arranged inside the feed pipe (7); the heating mechanism (2) comprises a hot water tank (21); a connecting pipe (22) is sleeved on the surface of the feed pipe (7); a spiral through groove (23) is provided on the inner side of the connecting pipe (22) and the surface of the feed pipe (7); and both ends of the connecting pipe (22) are connected to the hot water tank (21) through a circulating water pipe (24).

2. The mold structure for special-shaped thin-walled injection molded products according to claim 1, characterized in that: The circulating water pipe (24) is provided with a valve (25), a toothed ring (26) is fixed on the surface of the valve (25), the toothed ring (26) is meshed with a connecting rack (27), the connecting rack (27) is slidably mounted on the top of the fixed mold (11), a spring sheet (28) is fixed at the bottom of the connecting rack (27), one end of the spring sheet (28) away from the connecting rack (27) is fixed to the right side of the fixed mold (11), and a resistance block (29) is fixed on the top of the movable mold (12).

3. The mold structure for special-shaped thin-walled injection molded products according to claim 1, characterized in that: The swing assembly (3) comprises a rotating rod (31), the rotating rod (31) passes through the feed pipe (7) and is rotatably connected to the feed pipe (7), a connecting plate (32) is fixed to one end of the rotating rod (31) away from the connecting pipe (22), a spiral spring (33) is fixed to the surface of the rotating rod (31), and the end of the spiral spring (33) away from the rotating rod (31) is fixed to the inner side of the connecting pipe (22).

4. The mold structure for special-shaped thin-walled injection molded products according to claim 3, characterized in that: A blocking plate (34) is hingedly connected to the surface of the rotating rod (31), a fixing ring (35) is fixed to the surface of the feeding pipe (7), an arc groove (36) is provided on the top of the fixing ring (35), a groove (37) is provided on the surface of the rotating rod (31), a stopper (38) is slidably installed on the inner side of the groove (37), an insertion rod (39) is fixed to one end of the stopper (38) close to the connecting plate (32), and one end of the insertion rod (39) away from the stopper (38) is inserted into the inner side of the arc groove (36).

5. The mold structure for special-shaped thin-walled injection molded products according to claim 4, characterized in that: The driven assembly (4) comprises a cross bar (41) which is slidably mounted on the surface of a connecting plate (32), a lifting plate (42) being slidably mounted on the surface of the connecting plate (32), and a support rod (43) being hingedly connected at one end of the cross bar (41) close to the lifting plate (42).

6. The mold structure for special-shaped thin-walled injection molded products according to claim 5, characterized in that: One end of the support rod (43) away from the cross rod (41) is hinged to one side of the lifting plate (42), and the other side of the lifting plate (42) is hinged with a hinge rod (44). One end of the hinge rod (44) away from the lifting plate (42) is hinged to a slide rod (45), and the slide rod (45) is slidably installed on the surface of the connecting plate (32).

7. The mold structure for special-shaped thin-walled injection molded products according to claim 5, characterized in that: An auxiliary component (5) is arranged on the lifting plate (42), and the auxiliary component (5) comprises a movable groove (51), the movable groove (51) is opened on the surface of the lifting plate (42), an elastic telescopic rod (52) is fixed inside the movable groove (51), a connecting block (53) is fixed at one end of the elastic telescopic rod (52) away from the movable groove (51), and a vertical rod (54) is slidably mounted on the surface of the connecting block (53).

8. The mold structure for special-shaped thin-walled injection molded products according to claim 7, characterized in that: A lever (55) is fixed to the side of the vertical rod (54) away from the connecting block (53), a pull rope (56) is fixed to the side of the connecting block (53) away from the vertical rod (54), one end of the pull rope (56) away from the connecting block (53) is fixed to the surface of the connecting plate (32), a wave groove (57) is provided on the inner side of the movable groove (51), a connecting rod (58) is fixed to the surface of the vertical rod (54), and one end of the connecting rod (58) away from the vertical rod (54) is inserted into the inner side of the wave groove (57).

9. An injection molding machine, characterized in that: A mold structure for a special-shaped thin-walled injection molded product as claimed in any one of claims 1 to 8; The injection molding machine comprises an injection molding mechanism (6), wherein a fixed mold (11), a movable mold (12) and an electric telescopic mechanism (13) are arranged inside the injection molding mechanism (6), wherein the electric telescopic mechanism (13) is arranged on the side wall of the injection molding mechanism (6), and the top of the injection molding mechanism (6) is connected to the bottom of a hot water tank (21).

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