Resin zipper injection molding machine

Abstract

The application relates to the technical field of injection molding machines, and discloses a resin zipper injection molding machine which comprises a rack, a bottom plate, a supporting plate and a mold arranged on the rack, wherein the mold comprises a lower mold and an upper mold, a lifting mechanism for driving the mold to close and open is arranged on the rack, a heating mechanism for melting material and conveying the material to the mold is arranged on the supporting plate, and a cooling mechanism for cooling the supporting plate and the bottom plate is arranged on one side of the rack; a first flow channel is arranged in the bottom plate, a second flow channel is arranged in the supporting plate, the cooling mechanism comprises a water tank, a water passing pipe is connected to the side surface of the water tank, a refrigerator is connected to the tail end of the water passing pipe, a water pump is arranged on the water passing pipe, a first water inlet pipe which is in communication with a water inlet of the first flow channel and a second water inlet pipe which is in communication with a water inlet of the second flow channel are connected to the refrigerator, and a first water outlet pipe which is in communication with a water outlet of the first flow channel and a second water outlet pipe which is in communication with a water outlet of the second flow channel are connected to the water tank. The application has the effect that the physical performance of the formed product is not prone to reduction.

Description

Technical Field

[0001] This application relates to the technical field of injection molding machines, and in particular to a resin zipper injection molding machine. Background Technology

[0002] During the resin zipper manufacturing process, the front code and insert need to be injection molded onto the zipper belt. The zipper teeth are made of recyclable PET material. The working principle of molding the front code and insert is to inject molten plastic particles into a mold and shape them, thus molding the front code of the previous zipper belt and the insert of the next zipper belt in one step.

[0003] In related technologies, injection molding machines include a frame, on which a mold, a feeding mechanism for conveying material to the mold, and a heating mechanism for melting the material are mounted. The heating mechanism is located between the mold and the feeding mechanism.

[0004] During the injection molding process, the heating mechanism heats the material at high temperatures, which can easily cause the equipment temperature to be too high, thus affecting the physical properties of the molded product. Utility Model Content

[0005] In order to improve the physical properties of the molded product, this application provides a resin zipper injection molding machine.

[0006] This application provides a resin zipper injection molding machine, which adopts the following technical solution:

[0007] A resin zipper injection molding machine includes a frame, a base plate, a support plate, and a mold at the upper end of the frame. The mold includes a lower mold disposed above the base plate and an upper mold disposed below the support plate. A lifting mechanism for driving the mold to open and close is provided on the frame. A heating mechanism for melting material and conveying it to the mold is provided on the support plate. A cooling mechanism for cooling the support plate and the base plate is provided on one side of the frame. A first flow channel is formed in the base plate, and a second flow channel is formed in the support plate. The cooling mechanism includes a water tank, a water pipe connected to the side of the water tank, a chiller connected to the end of the water pipe, a water pump on the water pipe, a first water inlet pipe connected to the inlet of the first flow channel, and a second water inlet pipe connected to the inlet of the second flow channel on the chiller. A first water outlet pipe connected to the outlet of the first flow channel and a second water outlet pipe connected to the outlet of the second flow channel are connected to the water tank.

[0008] By adopting the above technical solution, after the lifting mechanism drives the mold to close, the heating mechanism injects the molten material into the mold, causing the temperature of the mold to rise. This causes the temperature of the base plate and support plate in contact with the mold to rise. Then, the water pump transports water from the water tank. The water is cooled in the chiller. The water is transported to the first flow channel through the first water inlet pipe to cool the base plate, and to the second flow channel through the second water inlet pipe to cool the support plate. Both the base plate and the support plate exchange heat with the mold, cooling the mold and making it less likely for the physical properties of the molded product to deteriorate.

[0009] Optionally, there are two second flow channels, and a connecting pipe is provided between the two second flow channels to connect them.

[0010] By adopting the above technical solution, the length of the flow channel inside the support plate is increased, and the contact area between the flow channel and the support plate is increased, thereby improving the cooling effect.

[0011] Optionally, the frame has a receiving cavity, and the lifting mechanism includes a lifting column located below the support plate and a lifting cylinder located on the lower inner wall of the receiving cavity. The piston rod of the lifting cylinder is connected to a lifting plate, and the lower end of the lifting column passes through the base plate and the frame and is connected to the lifting plate.

[0012] By adopting the above technical solution, the lifting cylinder drives the lifting plate, lifting column and support plate to descend, so as to realize the closing of the upper mold and the lower mold, and conversely, to open the mold.

[0013] Optionally, the heating mechanism includes a support rod mounted on a support plate, a movable plate vertically slidably mounted on the support rod, a vertical cylinder mounted at the bottom of the movable plate, the piston rod of the vertical cylinder connected to the upper end face of the support plate, a fixed tube mounted on the movable plate, a heating tube mounted at the bottom of the fixed tube, a nozzle mounted at the bottom of the heating tube, a pushing cylinder mounted above the movable plate, a support block connected to the piston rod of the pushing cylinder, a motor mounted at the upper end of the support block, a rotating rod inserted into the heating tube connected to the output shaft of the motor, and spiral blades located inside the heating tube mounted on the outer circumference of the rotating rod.

[0014] By adopting the above technical solution, the material is heated and melted in the heating tube. The vertical cylinder is activated, which brings the movable plate and the support plate closer together, i.e., the movable plate descends. When the nozzle comes into contact with the mold, the pushing cylinder is activated, which brings the support block closer to the movable plate, i.e., the support block descends, and the material in the heating tube is squeezed and injected into the mold.

[0015] Optionally, the support block has punched holes for the support rod to pass through.

[0016] By adopting the above technical solution, the support rod passes through the punch hole, which guides the vertical movement of the support block.

[0017] Optionally, the fixed pipe is provided with a feeding mechanism for conveying materials into the fixed pipe. The feeding mechanism includes a feeding pipe disposed on the outer circumferential surface of the fixed pipe, and a hopper is connected to the end of the feeding pipe away from the fixed pipe.

[0018] By adopting the above technical solution, the hopper transports the material through the feed pipe to the fixed pipe, replenishing the material in the heating pipe.

[0019] Optionally, the frame is provided with a dewatering assembly for removing water from the material in the hopper. The dewatering assembly includes an air inlet pipe connected to the side of the hopper, and a fan is connected to the end of the air inlet pipe away from the hopper.

[0020] By adopting the above technical solution, the air blown out by the blower enters the hopper through the air inlet pipe, which can effectively remove moisture from the plastic particles.

[0021] Optionally, the dewatering assembly further includes a cover disposed on the top of the hopper, with an air outlet pipe connected to the upper end of the cover, a filter cartridge connected to the side of the air outlet pipe away from the cover, and a return air pipe connected to a blower disposed at one end of the filter cartridge.

[0022] By adopting the above technical solution, after the air in the hopper adsorbs the moisture of the plastic particles, it can be discharged into the filter cartridge through the air outlet pipe. The filter cartridge adsorbs the water vapor and harmful substances in the air, preventing the water vapor in the air from being re-adsorbed by the plastic particles. Furthermore, the air filtered by the filter cartridge can enter the blower through the return air pipe to achieve recycling, preventing the entry of humid air from the outside and preventing the plastic particles from re-adsorbing water vapor.

[0023] Optionally, the frame is provided with a spraying mechanism for spraying release agent. The spraying mechanism includes a storage tank on the frame, an atomizing nozzle for spraying release agent into the molding tank, a delivery pipe connecting the storage tank and the atomizing nozzle, and an air compressor connected to the atomizing nozzle.

[0024] By adopting the above technical solution, the release agent is delivered to the atomizing nozzle through the conveying pipeline and sprayed through the atomizing nozzle, which reduces the adhesion between the chain teeth and the mold after molding, improves the demolding efficiency and reduces product wear.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. After the lifting mechanism drives the mold to close, the heating mechanism injects the molten material into the mold, causing the temperature of the mold to rise. This causes the temperature of the base plate and support plate in contact with the mold to rise. Then, the water pump delivers water from the water tank. The water is cooled in the chiller. The water is delivered to the first flow channel through the first water inlet pipe to cool the base plate, and to the second flow channel through the second water inlet pipe to cool the support plate. Both the base plate and the support plate exchange heat with the mold, cooling the mold and making it less likely for the physical properties of the molded product to decrease.

[0027] 2. The material is dehydrated by a dehydration mechanism to prevent water from affecting the quality of the product molding. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0029] Figure 2 This is a schematic diagram highlighting a portion of the spraying mechanism.

[0030] Reference numerals: 1. Frame; 11. Receiving cavity; 2. Base plate; 3. Support plate; 31. Fixing hole; 4. Lifting mechanism; 41. Lifting cylinder; 42. Lifting plate; 43. Lifting column; 44. Lifting block; 45. Lifting nut; 5. Mold; 51. Upper mold; 511. Linkage pipe; 52. Lower mold; 6. Heating mechanism; 61. Support rod; 62. Movable plate; 63. Fixing pipe; 64. Heating pipe; 641. Nozzle; 65. Vertical cylinder; 66. Pushing cylinder; 67. Support block; 68. Motor; 6 9. Rotating rod; 7. Feeding mechanism; 71. Feeding pipe; 72. Hopper; 73. Dewatering assembly; 731. Fan; 732. Air inlet pipe; 733. Air outlet pipe; 734. Filter cartridge; 735. Return air pipe; 8. Cooling mechanism; 81. Water tank; 82. Water pipe; 83. Water pump; 84. Refrigeration unit; 85. Solenoid valve; 86. First water inlet pipe; 87. Second water inlet pipe; 88. First water outlet pipe; 89. Second water outlet pipe; 9. Spraying mechanism; 91. Storage tank; 92. Atomizing nozzle; 93. Conveying pipeline. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0032] This embodiment discloses a resin zipper injection molding machine. (Refer to...) Figure 1 A resin zipper injection molding machine includes a frame 1, on which a base plate 2, a support plate 3, a mold 5, and a lifting mechanism 4 are mounted. Both the base plate 2 and the support plate 3 are made of a metal material with good thermal conductivity. The base plate 2 is fixedly connected to the upper surface of the frame 1. A first flow channel is formed within the base plate 2.

[0033] Reference Figure 1The frame 1 has a receiving cavity 11. The lifting mechanism 4 is used to drive the support plate 3 to rise and fall. The lifting mechanism 4 includes a lifting cylinder 41, a lifting plate 42, a lifting column 43, a lifting block 44, and a lifting nut 45.

[0034] Reference Figure 1 The lifting cylinder 41 is fixedly connected to the lower inner wall of the accommodating cavity 11. The lifting plate 42 is fixedly connected to the piston rod of the lifting cylinder 41. Four lifting columns 43 are provided, and each is fixedly connected to the upper end face of the lifting plate 42. All four lifting columns 43 pass through the frame 1 and the base plate 2 and extend to the top of the frame 1. The upper end of each lifting column 43 is fixedly connected to a lifting block 44.

[0035] Reference Figure 1 A support plate 3 is mounted on the lifting column 43. Four through holes are provided on the support plate 3 for the lifting block 44 to pass through. A lifting nut 45 is threaded onto the lifting block 44, with its lower end face abutting against the upper end face of the support plate 3. Two second flow channels are provided inside the support plate 3, and a linkage pipe 511 connecting the two flow channels is provided between them.

[0036] Reference Figure 1 The mold 5 is positioned between the base plate 2 and the support plate 3. The mold 5 is used for inserting the front and rear links of one chain before chain forming. The mold 5 includes an upper mold 51 and a lower mold 52. The lower mold 52 is mounted above the base plate 2. The upper mold 51 is mounted below the support plate 3. The upper mold 51 and the lower mold 52 close together, forming a cavity inside the mold 5.

[0037] Reference Figure 1 The top plate is equipped with a heating mechanism 6, which is used to heat and melt the raw materials. The heating mechanism 6 includes a support rod 61, a movable plate 62, a fixed tube 63, a heating tube 64, a vertical cylinder 65, a pushing cylinder 66, a support block 67, a motor 68, a rotating rod 69, and spiral blades.

[0038] Reference Figure 1 Four support rods 61 are provided, all of which are fixedly connected to the upper end face of the support plate 3. A movable plate 62 is located above the support plate 3, and has four through holes for the support rods 61 to pass through. The movable plate 62 can move along the axis of the support rods 61. A mounting hole is provided on the movable plate 62, and a fixing tube 63 is installed in the mounting hole. A heating tube 64 is connected to the bottom of the fixing tube 63. A nozzle 641 is fixedly connected to the bottom wall of the heating tube 64. A fixing hole 31 is provided on the support plate 3 for the heating tube 64 and the nozzle 641 to pass through.

[0039] Reference Figure 1Two vertical cylinders 65 are provided, and both vertical cylinders 65 are fixedly connected to the lower end face of the movable plate 62. The piston rod of the vertical cylinder 65 is fixedly connected to the upper end face of the support plate 3.

[0040] Reference Figure 1 The support block 67 is located above the movable plate 62, and has four punched holes for the support rod 61 to pass through. The support plate 3 can move along the axis of the support rod 61. Two pusher cylinders 66 are provided, and both pusher cylinders 66 are fixedly connected to the upper end face of the movable plate 62. The piston rod of the pusher cylinder 66 is fixedly connected to the lower end face of the support block 67.

[0041] Reference Figure 1 The housing of motor 68 is fixedly connected to the upper end face of support block 67. The output shaft of motor 68 passes through support block 67 and is connected to rotating rod 69. Rotating rod 69 passes through fixed tube 63 and is inserted into heating tube 64. Helical blades are fixedly connected to the outer circumferential surface of rotating rod 69. Helical blades are located inside heating tube 64.

[0042] Reference Figure 1 The movable plate 62 is equipped with a feeding mechanism 7, which is used to convey materials into the heating tube 64. The feeding mechanism 7 includes a feeding pipe 71, a hopper 72, and a dewatering component 73.

[0043] Reference Figure 1 The feed pipe 71 is connected to the outer circumferential surface of the fixed pipe 63, and the distance between the axes of the feed pipe 71 and the fixed pipe 63 gradually increases in the vertically upward direction. The hopper 72 is connected to the end of the feed pipe 71 away from the fixed pipe 63. A cover is installed on the top of the hopper 72.

[0044] Reference Figure 1 The dewatering assembly 73 includes a blower 731, an inlet duct 732, an outlet duct 733, a filter cartridge 734, and a return duct 735. One side of the inlet duct 732 is connected to the outlet of the blower 731, and the other side is connected to the outer surface of the hopper 72. One side of the outlet duct 733 is connected to the cover of the hopper 72, and the other side is connected to the filter cartridge 734. One side of the return duct 735 is connected to the top of the filter cartridge 734, and the other side is connected to the inlet of the blower 731.

[0045] Reference Figure 1 A cooling mechanism 8 is provided on the side of the frame 1. The cooling mechanism 8 is used to cool and reduce the temperature of the mold 5. The cooling mechanism 8 includes a water tank 81, a water pipe 82, a water pump 83, a chiller 84, a solenoid valve 85, a first water inlet pipe 86, a second water inlet pipe 87, a first water outlet pipe 88, and a second water outlet pipe 89. The water pipe 82, the first water inlet pipe 86, the second water inlet pipe 87, the first water outlet pipe 88, and the second water outlet pipe 89 are all made of flexible hoses.

[0046] Reference Figure 1 The water tank 81 is located on the side of the frame 1. The water tank 81 is connected to the chiller 84 via a water pipe 82, and the water pump 83 is mounted on the water pipe 82. Both the first water inlet pipe 86 and the second water inlet pipe 87 are connected to the chiller 84. The other end of the first water inlet pipe 86 is connected to the base plate 2, connecting the inlet of the first flow channel to the first water inlet pipe 86. The other end of the second water inlet pipe 87 is connected to the support plate 3, connecting the inlet of the second flow channel to the second water inlet pipe 87.

[0047] Reference Figure 1 The first water outlet pipe 88 and the second water outlet pipe 89 are both connected to the water tank 81. The other end of the first water outlet pipe 88 is connected to the bottom plate 2, so that the water outlet of the first flow channel is connected to the first water outlet pipe 88. The other end of the second water outlet pipe 89 is connected to the support plate 3, so that the water outlet of the second flow channel is connected to the second water outlet pipe 89.

[0048] Reference Figure 2 A spraying mechanism 9 is provided on the base plate 2. The spraying mechanism 9 is used to spray the release agent. The spraying mechanism 9 includes a storage tank 91, an atomizing nozzle 92, a conveying pipe 93, and an air compressor.

[0049] Reference Figure 2 The storage tank 91 is fixedly connected to the side of the water tank 81. A delivery pipe 93 is connected to the side of the storage tank 91. An atomizing nozzle 92 is fixedly connected to the side of the delivery pipe 93 away from the storage tank 91. The atomizing nozzle 92 is connected to an air compressor.

[0050] The implementation principle of a resin zipper injection molding machine according to an embodiment of this application is as follows: First, the lifting cylinder 41 retracts, driving the lifting plate 42, lifting column 43, and support plate 3 to descend, causing the upper mold 51 and lower mold 52 to close. Second, the piston rod of the vertical cylinder 65 retracts, causing the nozzle 641 to contact the upper mold 51, and the piston rod of the pushing cylinder 66 descends, causing the support plate 3 to move closer to the fixed tube 63, squeezing the material in the heating tube 64 into the mold 5. The water pump 83 starts, causing water to move in the first and second flow channels, heating the support plate 3 and the bottom plate 2, thereby lowering the mold 5 and accelerating product molding.

[0051] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A resin zipper injection molding machine, comprising a frame (1), characterized in that: The upper end of the frame (1) is provided with a base plate (2), a support plate (3), and a mold (5). The mold (5) includes a lower mold (52) disposed above the base plate (2) and an upper mold (51) disposed below the support plate (3). The frame (1) is provided with a lifting mechanism (4) for driving the mold (5) to open and close. The support plate (3) is provided with a heating mechanism (6) for melting the material and conveying it to the mold (5). A cooling mechanism (8) for cooling the support plate (3) and the base plate (2) is provided on one side of the frame (1). A first flow channel is opened in the base plate (2). The support plate (3) A second flow channel is provided inside. The cooling mechanism (8) includes a water tank (81). A water pipe (82) is connected to the side of the water tank (81). A chiller (84) is connected to the end of the water pipe (82). A water pump (83) is provided on the water pipe (82). A first water inlet pipe (86) connected to the water inlet of the first flow channel and a second water inlet pipe (87) connected to the water inlet of the second flow channel are connected to the chiller (84). A first water outlet pipe (88) connected to the water outlet of the first flow channel and a second water outlet pipe (89) connected to the water outlet of the second flow channel are connected to the water tank (81).

2. The resin zipper injection molding machine according to claim 1, characterized in that: There are two second flow channels, and a connecting pipe (511) is provided between the two second flow channels to connect them.

3. The resin zipper injection molding machine according to claim 1, characterized in that: The frame (1) has a receiving cavity (11) inside. The lifting mechanism (4) includes a lifting column (43) located below the support plate (3) and a lifting cylinder (41) located on the lower inner wall of the receiving cavity (11). The piston rod of the lifting cylinder (41) is connected to a lifting plate (42). The lower end of the lifting column (43) passes through the bottom plate (2) and the frame (1) and is connected to the lifting plate (42).

4. A resin zipper injection molding machine according to claim 1, characterized in that: The heating mechanism (6) includes a support rod (61) mounted on a support plate (3). A movable plate (62) is vertically slidably mounted on the support rod (61). A vertical cylinder (65) is mounted at the bottom of the movable plate (62). The piston rod of the vertical cylinder (65) is connected to the upper end face of the support plate (3). A fixed tube (63) is mounted on the movable plate (62). A heating tube (64) is mounted at the bottom of the fixed tube (63). (64) has a nozzle (641) at the bottom and a pusher cylinder (66) above the movable plate (62). The piston rod of the pusher cylinder (66) is connected to a support block (67). The upper end of the support block (67) is equipped with a motor (68). The output shaft of the motor (68) is connected to a rotating rod (69) inserted into the heating tube (64). The outer circumference of the rotating rod (69) is provided with spiral blades located inside the heating tube (64).

5. A resin zipper injection molding machine according to claim 4, characterized in that: The support block (67) has a punch hole through which the support rod (61) passes.

6. A resin zipper injection molding machine according to claim 4, characterized in that: The fixed pipe (63) is provided with a feeding mechanism (7) for conveying materials into the fixed pipe (63). The feeding mechanism (7) includes a feeding pipe (71) disposed on the outer circumferential surface of the fixed pipe (63). The end of the feeding pipe (71) away from the fixed pipe (63) is connected to a hopper (72).

7. A resin zipper injection molding machine according to claim 6, characterized in that: The frame (1) is provided with a dewatering assembly (73) for removing water from the material in the hopper (72). The dewatering assembly (73) includes an air inlet pipe (732) connected to the side of the hopper (72), and a fan (731) is connected to the end of the air inlet pipe (732) away from the hopper (72).

8. A resin zipper injection molding machine according to claim 7, characterized in that: The dewatering assembly (73) also includes a cover set on the top of the hopper (72), with an air outlet pipe (733) connected to the upper end of the cover. A filter cartridge (734) is connected to the side of the air outlet pipe (733) away from the cover, and a return air pipe (735) connected to the blower (731) is provided at one end of the filter cartridge (734).

9. A resin zipper injection molding machine according to claim 1, characterized in that: The frame (1) is provided with a spraying mechanism (9) for spraying release agent. The spraying mechanism (9) includes a storage tank (91) on a water tank (81), an atomizing nozzle (92) for spraying release agent onto the mold (5), a delivery pipe (93) connecting the storage tank (91) and the atomizing nozzle (92), and an air compressor connected to the atomizing nozzle (92).

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