Hot runner mold

Abstract

The invention discloses a hot runner mold, relates to the technical field of molds, and solves the technical problems that when an existing hot runner mold is used, the product cooling forming period is long, and demolding operation is inconvenient. The hot runner mold comprises a fixed mold body, a mounting frame is arranged on the back of the fixed mold body, and a movable mold body is arranged at the front end of the fixed mold body; and a fixing mechanism is arranged at the center of the front surface of the movable mold. The cooling coil and cooling liquid circulation design accelerates product cooling and shaping; the piston is pushed through the air channel to drive the ejector block to eject a product and blow air for demolding, and automatic operation is achieved. The piston sealing ring enhances sealing and ensures stable demolding power. The fixing mechanism can clamp telescopic rods of different specifications in a centering mode, and the device is suitable for various production devices. In addition, the hot runner injects liquid accurately, the bearing plate bears stably, the stability of the injection molding process is ensured, the product forming quality is improved, and the production efficiency and the mold applicability are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and particularly to a hot runner mold. Background Art

[0002] A hot runner mold is a mold that uses a heating device to keep the melt in the runner from solidifying all the time. Because it has a shorter molding cycle than traditional molds and saves more raw materials, hot runner molds are extremely widely used in industrialized developed countries and regions around the world today.

[0003] In the current field of plastic injection molding, traditional hot runner molds have many problems that limit production efficiency and application flexibility. On the one hand, the cooling system of the mold is poorly designed, resulting in a slow cooling rate of the injection-molded product, prolonging the product molding cycle and restricting the improvement of production efficiency. On the other hand, the demolding method is not convenient and efficient enough, and often requires manual assistance or complex operations to complete product demolding, which not only increases labor costs but also easily damages the product. In addition, the connection method between the existing mold and automated production equipment is relatively single, with poor adaptability, and it is difficult to meet the installation requirements of production equipment of different specifications, restricting the application of the mold in diverse production scenarios. The hot runner mold proposed by the present invention is developed in view of the deficiencies in the above background art, aiming to solve problems such as low cooling efficiency, difficult demolding, and poor equipment adaptability. Summary of the Invention

[0004] The purpose of the present invention is to provide a hot runner mold to solve the following technical problems: The cooling system has low efficiency, the product cooling and molding cycle is long, the demolding operation is inconvenient, it relies on manual labor and is prone to damage the product, the connection method with automated production equipment is single, the adaptability is poor, and it is difficult to meet the needs of diverse production scenarios.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A hot runner mold includes a fixed mold, an installation frame is arranged on the back of the fixed mold, a movable mold is arranged at the front end of the fixed mold, and a fixing mechanism is arranged at the center of the front surface of the movable mold; The fixed mold includes a fixed base plate, a first mold body is fixedly connected to the front surface of the fixed base plate, a receiving plate is fixedly connected to the front surface of the first mold body, a plurality of punch dies are uniformly and fixedly connected inside the receiving plate, a partition plate is fixedly connected to the rear end inside each punch die, a sliding cavity is formed at a position corresponding to the center of the first mold body and a plurality of punch dies on the front surface inside the first mold body, a cooling coil is wound around the front end of the outer wall of each sliding cavity, a piston is slidably connected to the rear end inside each sliding cavity, a sliding rod is fixedly connected to the front surface of each piston, a top block is fixedly connected to the front surface of each sliding rod, a return spring is sleeved on the outer wall of each sliding rod, an air duct is formed at the center of the back of each sliding cavity, the mounting bracket is threadedly connected to the back of the fixed base plate by bolts, the front end of each cooling coil is attached to the back of the partition plate corresponding to it, and each top block is fitted inside the center of the partition plate corresponding to it.

[0006] As a further scheme of the present invention, a water inlet and a water outlet are respectively formed at the top left and bottom of the first mold body, the water inlet and the water outlet are communicated with a plurality of cooling coils, the center of the right side of the first mold body is communicated with an external air source through a connecting pipe, and a plurality of the air ducts are all communicated with the connecting pipe.

[0007] As a further scheme of the present invention, a rubber sealing ring is sleeved on the outer wall of the piston, and the outer wall of the sealing ring is attached to the inner wall of the sliding cavity, which can enhance the sealing performance between the piston and the sliding cavity.

[0008] As a further scheme of the present invention, the moving mold includes a sliding base plate, a second mold body is fixedly connected to the back of the sliding base plate, a plurality of hot runners are uniformly distributed in a rectangular array inside the second mold body, a female die is fixedly connected to a position corresponding to the plurality of hot runners on the back of the second mold body, a hot nozzle is formed at the back of each hot runner, and the hot nozzle is fitted inside the center of the front end of the female die, the sliding base plate and the fixed base plate are on the same horizontal line, and the backs of a plurality of the female dies can be fitted inside the front surface of the receiving plate.

[0009] As a further scheme of the present invention, sprue bushings are formed on the left and right sides of the front surface of the sliding base plate, the back of the sprue bushing is communicated with the hot runner, and the front end of the sprue bushing is communicated with an external injection mother liquid through a conveying pipe.

[0010] As a further solution of the present invention, the fixing mechanism includes a fixing plate, a fixing shell is fixedly connected at the center of the front surface of the fixing plate, a gear is rotatably connected at the inner center of the fixing shell, a turntable is fixedly connected to the front surface of the gear, a plurality of sliders are slidably connected inside the turntable, a groove seat is fixedly connected to the front surface of the fixing shell, a plurality of clamping blocks are slidably connected to the back of the inner wall of the groove seat, a worm is rotatably connected to the inner top end of the fixing shell, the bottom end of the worm is meshed with the top end of the gear, and the fixing plate is threadably connected to the center of the front surface of the sliding seat plate by bolts.

[0011] As a further solution of the present invention, three slideways are provided in a circular array on the back of the inner wall of the groove seat, and the plurality of clamping blocks are respectively slidably connected inside the slideways, and the back of the clamping blocks is rotatably connected to the inside of the slider through a pin shaft.

[0012] As a further solution of the present invention, connecting through holes are provided around the front end of the outer wall of the groove seat.

[0013] Beneficial effects of the present invention: (1) Efficient cooling molding: The first mold body is provided with a water inlet and a drain outlet connected to the cooling coil, which can quickly remove heat through the circulating coolant. Combined with the cooling coil wound around the front end of the outer wall of the sliding cavity, it can significantly enhance the cooling speed of the injection molded product, speed up product shaping, and greatly improve production efficiency. (2) Convenient and automatic demolding: The gas is delivered to the inside of the sliding cavity through the air channel to push the piston, and the piston drives the sliding rod and the ejector block to eject the molded product from the inside of the punch. At the same time, the gas is continuously delivered to blow the product forward, achieving rapid demolding, reducing manual intervention, improving demolding efficiency, and facilitating continuous production; (3) Good sealing performance: The outer wall of the piston is sleeved with a rubber sealing ring, and the outer wall of the sealing ring fits tightly against the inner wall of the sliding cavity, which effectively enhances the sealing between the piston and the sliding cavity, prevents gas leakage, ensures stable transmission of demoulding power, and ensures a smooth demoulding process; (4) Flexible connection and adaptation: The slot seat in the fixing mechanism can be sleeved onto the output end of the electric telescopic rod or the hydraulic telescopic rod. The worm drives the gear, turntable and slider to make the clamping block slide toward the center of the slot seat for centering clamping. The connection is then achieved through the connecting through hole. It can adapt to telescopic rods of different specifications, thereby improving the flexibility and versatility of the connection between the movable mold and the automated production equipment, and enhancing the adaptability of the mold. (5) Precise injection and stable connection: The hot runner and hot nozzle design of the movable mold can accurately inject the mother liquid into the punch and die; the receiving plate of the fixed mold can wrap the outer wall of the punch and receive the die when the punch and die are engaged, ensuring a stable injection process and improving product molding quality; (6) The cooling coil and coolant circulation design accelerate the cooling and shaping of the product; the piston is pushed through the air channel to drive the ejector block to eject the product and blow out the mold to achieve automated operation. The piston seal ring enhances the seal and ensures stable demolding power. The fixing mechanism can clamp telescopic rods of different specifications in the center and adapt to a variety of production equipment. In addition, the hot runner accurately injects liquid, and the receiving plate stably receives it, ensuring the stability of the injection molding process, improving the product molding quality, and effectively improving production efficiency and mold applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the connection structure of the hot runner mold of the present invention; Figure 2 The present invention Figure 1 Schematic diagram of the split connection structure of the fixed mold and the movable mold; Figure 3 The present invention Figure 2 Another isometric schematic diagram of the connection structure; Figure 4 The present invention Figure 3 Another isometric schematic diagram of the connection structure; Figure 5 The present invention Figure 1 A top view cross-sectional connection structure diagram; Figure 6 The present invention Figure 5 Schematic diagram of the connection structure of the punch, partition and slide cavity; Figure 7 The present invention Figure 1 A schematic diagram of the front cross-sectional connection structure of the fixing mechanism; Figure 8 The present invention Figure 7 A schematic diagram of a side view connection structure; Figure 9 The present invention Figure 8 Schematic diagram of the partial cross-section connection structure.

[0015] In the figure: 1. fixed mold; 101. fixed seat plate; 102. first mold body; 103. receiving plate; 104. punch; 105. partition; 106. sliding cavity; 107. cooling coil; 108. piston; 109. slide rod; 110. ejector block; 111. return spring; 112. airway; 2. mounting frame; 3. movable mold; 301. sliding seat plate; 302. second mold body; 303. hot runner; 304. concave mold; 305. hot nozzle; 4. fixing mechanism; 401. fixing plate; 402. fixing shell; 403. gear; 404. turntable; 405. slider; 406. slot seat; 407. clamping block; 408. worm. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1. Please refer to Figures 1-6 As shown in the figure, the present invention is a hot runner mold, which includes a fixed mold 1. An installation frame 2 is arranged on the back of the fixed mold 1, and the installation frame 2 is used for installing the fixed mold 1. A moving mold 3 is arranged at the front end of the fixed mold 1. Through the mutual cooperation of the fixed mold 1 and the moving mold 3, the plastic mother liquid can be injection-molded into a finished workpiece. A fixing mechanism 4 is arranged at the center of the front surface of the moving mold 3, and the fixing mechanism 4 is used for installing the moving mold 3 and other automated production equipment together; The fixed mold 1 includes a fixed base plate 101 which is used to fix the first mold body 102. The front surface of the fixed base plate 101 is fixedly connected with the first mold body 102. The first mold body 102 is used to fix the receiving plate 103 and the punch 104. The front surface of the first mold body 102 is fixedly connected with the receiving plate 103. The receiving plate 103 is used to wrap the outer wall of the punch 104 and can receive the female mold 304 when the punch 104 and the female mold 304 are fitted together. A plurality of punches 104 are uniformly and fixedly connected inside the receiving plate 103. A partition plate 105 is fixedly connected to the inner rear end of each punch 104. The partition plate 105 is used to separate the punch 104 from the cooling coil 107. A sliding cavity 106 is provided at a position corresponding to the center of each punch 104 inside the front surface of the first mold body 102. A piston 108 can slide inside the sliding cavity 106. The front end of the outer wall of each sliding cavity 106 is wound with a cooling coil 107. The cooling coil 107 is used to enhance the cooling speed of the injection molded product. A piston 108 is slidably connected to the inner rear end of each sliding cavity 106. The piston 108 is used to drive the sliding rod 109 to move. A sliding rod 109 is fixedly connected to the front surface of each piston 108. The sliding rod 109 is used to drive the ejector block 110 to move. An ejector block 110 is fixedly connected to the front surface of each sliding rod 109. The ejector block 110 is used to eject the injection molded product from the inside of the punch 104, so as to facilitate the demolding of the product. A return spring 111 is sleeved on the outer wall of each sliding rod 109. The return spring 111 is used to reset the piston 108 so that the ejector block 110 can be re-fitted into the inside of the partition plate 105. An air duct 112 is provided at the center of the back of each sliding cavity 106. The air duct 112 is used to convey gas into the sliding cavity 106, so as to provide power to the piston 108 through the gas. The mounting frame 2 is connected to the back of the fixed base plate 101 by bolt threads. The front end of each cooling coil 107 is attached to the back of the corresponding partition plate 105. Each ejector block 110 is fitted into the center of the inside of the corresponding partition plate 105.

[0018] In this embodiment, preferably, a water inlet and a drain outlet are respectively provided at the left top end and the bottom end of the first mold body 102. The water inlet and the drain outlet are communicated with a plurality of cooling coils 107. The center of the right side of the first mold body 102 is connected to an external gas source through a connecting pipe. A plurality of air ducts 112 are all connected to the connecting pipe. A rubber - material sealing ring is sleeved on the outer wall of the piston 108, and the outer wall of the sealing ring is attached to the inner wall of the sliding cavity 106, which can enhance the sealing between the piston 108 and the sliding cavity 106.

[0019] In this embodiment, preferably, the moving die 3 includes a sliding seat plate 301 which is used for fixedly installing the second die body 302 and the fixing mechanism 4. The back of the sliding seat plate 301 is fixedly connected with the second die body 302 which is used for installing the hot runner 303. A plurality of hot runners 303 are evenly distributed in a rectangular array inside the second die body 302. The backs of the plurality of hot runners all penetrate out from the back of the second die body 302. Die cavities 304 are fixedly connected to the positions corresponding to the plurality of hot runners 303 on the back of the second die body 302. The die cavity 304 can be fitted together with the punch 104. A hot nozzle 305 is provided at the back of each hot runner 303 for injecting the mother liquid in the hot runner 303 into the inside of the punch 104 and the die cavity 304. And the hot nozzle 305 is fitted at the center of the front end inside the die cavity 304. The sliding seat plate 301 and the fixed seat plate 101 are on the same horizontal line. The backs of the plurality of die cavities 304 can be fitted inside the front surface of the receiving plate 103.

[0020] In this embodiment, preferably, pouring sleeves are provided on both the left and right sides of the front surface of the sliding seat plate 301. The back of the pouring sleeve is communicated with the hot runner 303, and the front end of the pouring sleeve is communicated with the external injection mother liquid through a conveying pipe for supplementing the injection stock solution into the hot runner 303.

[0021] In summary, when the product needs to be injection-molded, the injection mother liquid is injected into the inside of the hot runner 303 through the pouring sleeve. When the fixed die 1 and the moving die 3 are combined together, the die cavity 304 and the punch 104 will also be fitted together. The mother liquid can be poured into the inside of the die cavity 304 and the punch 104 through the hot nozzle 305. After the pouring is completed, through the operation of the cooling coil 107, the product inside the die cavity 304 and the punch 104 can be quickly cooled, thereby accelerating the molding speed of the product. After the product is shaped, the die cavity 304 is separated from the front end of the punch 104. At the same time, air is introduced into the inside of the sliding cavity 106 through the air duct 112, so that the piston 108 can be pushed forward. When the piston 108 slides forward, the sliding rod 109 can be driven to move together. While the sliding rod 109 moves, the ejector block 110 can be driven to move forward, so as to eject the molded product from the inside of the punch 104. While the ejector block 110 ejects the punch 104 forward, the air duct 112 will continuously introduce air into the inside of the sliding cavity 106, so that the already lifted product can be blown forward continuously, thereby quickly demolding the product and facilitating the production and processing of the injection mother liquid again.

[0022] Embodiment 2, please refer to Figure 1 and Figures 7-9As shown, on the basis of the first embodiment, the fixing mechanism 4 includes a fixing plate 401 for installing the fixing shell 402. At the center of the front surface of the fixing plate 401, a fixing shell 402 is fixedly connected, which is used to support the groove seat 406. At the center of the interior of the fixing shell 402, a gear 403 is rotatably connected, which is used to drive the turntable 404 to rotate. On the front surface of the gear 403, a turntable 404 is fixedly connected, which is used to drive the slider 405 to move. A plurality of sliders 405 are slidably connected inside the turntable 404, and the sliders 405 are used to drive the clamping blocks 407 to move. On the front surface of the fixing shell 402, a groove seat 406 is fixedly connected, which is used to communicate with the external electric telescopic rod. A plurality of clamping blocks 407 are slidably connected to the back of the inner wall of the groove seat 406. The clamping blocks 407 are used to center and clamp the end of the output end of the electric telescopic rod inside the groove seat 406, facilitating subsequent connection to the groove seat 406. At the top of the interior of the fixing shell 402, a worm 408 is rotatably connected, which is used to drive the gear 403 to rotate. The bottom end of the worm 408 is meshed with the top end of the gear 403. The fixing plate 401 is threadedly connected to the center of the front surface of the sliding seat plate 301 by bolts.

[0023] In this embodiment, preferably, three slideways are annularly and arrayedly formed on the back of the inner wall of the groove seat 406, and a plurality of clamping blocks 407 are respectively slidably connected inside the slideways. The back of the clamping blocks 407 is rotatably connected to the inside of the sliders 405 through pins. While the turntable 404 rotates, the clamping blocks 407 can be driven to move through the sliders 405, so that a plurality of clamping blocks 407 slide towards the center of the groove seat 406 simultaneously.

[0024] In this embodiment, preferably, connection through holes are formed around the front end of the outer wall of the groove seat 406. Through the operation of the connection through holes, it is convenient to connect the groove seat 406 to the end of the output end of the electric telescopic rod.

[0025] In summary, when the fixed mold 1 and the movable mold 3 need to be installed together with the production equipment, first, the socket 406 in the fixing mechanism 4 is sleeved on the outer wall of the end of the output end of the electric telescopic rod or the hydraulic telescopic rod to be connected together. Then, an inner hexagon wrench is inserted into the left side of the inner top of the fixing shell 402. By driving the worm 408 to rotate with the inner hexagon wrench, while the worm 408 rotates, the gear 403 meshed with its bottom end can be driven to rotate synchronously. When the gear 403 rotates, the turntable 404 can be driven to rotate synchronously. When the turntable 404 rotates, the slider 405 slidably connected inside it will also slide synchronously. However, since the center of the slider 405 is rotatably connected to the back of the clamping block 407 through a pin shaft, the clamping block 407 slidably connected inside the socket 406 will be driven to slide towards the center of the socket 406 when the slider 405 rotates. The fixing mechanism 4 is centered and clamped to the outer wall of the end of the output end of the electric telescopic rod or the hydraulic rod through the clamping block 407, which is convenient for subsequently connecting it to the socket 406 through the through hole, and the movable mold 3 can be connected to the output ends of electric telescopic rods or hydraulic telescopic rods of different specifications through the fixing mechanism 4, thereby improving its use adaptability.

[0026] Embodiment 3. Please refer to Figures 1-9 As shown in the figure, by combining Embodiment 1 and Embodiment 2, this embodiment is obtained. The hot runner mold involved in the present invention includes a fixed mold 1 and a movable mold 3. An installation frame 2 is arranged on the back of the fixed mold 1, and the installation frame 2 is fixed to the fixed mold 1 by bolts, mainly responsible for the installation and fixation of the fixed mold 1. The front end of the fixed mold 1 cooperates with the movable mold 3, and the two cooperate with each other to inject the plastic mother liquid into a finished workpiece. A fixing mechanism 4 is provided at the center of the front surface of the movable mold 3 for realizing the connection and installation of the movable mold 3 with other automated production equipment.

[0027] The fixed mold 1 part, the fixed seat plate 101 is used as a basic component to firmly fix the first mold body 102. The receiving plate 103 is fixed on the front surface of the first mold body 102. The receiving plate 103 wraps the outer wall of the punch 104 and plays the role of receiving the die 304 when the punch 104 and the die 304 are engaged. Multiple punches 104 are evenly distributed in the receiving plate 103, and a partition 105 is installed at the rear end of each punch 104 to separate the punch 104 and the cooling coil 107. A sliding cavity 106 is opened at the center of each punch 104 on the front surface of the first mold body 102, and the piston 108 can slide flexibly in the sliding cavity 106. The cooling coil 107 is coiled at the front end of the outer wall of the sliding cavity 106, which can significantly improve the cooling speed of the injection molded product. The rear end of the sliding cavity 106 is slidably connected with the piston 108. The piston 108 can drive the sliding rod 109 to move, and the sliding rod 109 further drives the ejector block 110 to move. The ejector block 110 is used to eject the injection-molded product from the inside of the punch 104 to achieve product demoulding. The outer wall of the sliding rod 109 is sleeved with a reset spring 111, which can reset the piston 108 and allow the ejector block 110 to be re-embedded in the partition 105. An air channel 112 is provided at the back center of the sliding cavity 106 to transport gas to the sliding cavity 106 and provide power for the piston 108. In addition, the top and bottom ends of the left side of the first mold body 102 are respectively provided with a water inlet and a drain outlet, which are connected to multiple cooling coils 107; the center of the right side is connected to the external air source through a connecting pipe, and each air channel 112 is connected to the connecting pipe. The outer wall of the piston 108 is sleeved with a rubber sealing ring, which fits tightly against the inner wall of the sliding cavity 106, effectively enhancing the sealing performance.

[0028] In the movable mold 3 part, the sliding seat plate 301 is used to fix the second mold body 302 and the fixing mechanism 4. A plurality of concave molds 304 are arranged on the back of the second mold body 302, which can be precisely fitted with the convex mold 104, and the hot runners 303 are evenly distributed inside. A hot nozzle 305 is arranged on the back of each hot runner 303, which is used to inject the mother liquid into the convex mold 104 and the concave mold 304. The sliding seat plate 301 and the fixed seat plate 101 are on the same horizontal line, and the backs of the plurality of concave molds 304 can be embedded in the front surface of the receiving plate 103. A sprue sleeve is provided on the left and right sides of the front surface of the sliding seat plate 301. The rear end of the sprue sleeve is connected to the hot runner 303, and the front end is connected to the external injection mother liquid source through a conveying pipe to realize the replenishment of the injection stock liquid.

[0029] The fixed plate 401 is fixed to the center of the front surface of the sliding seat plate 301 by bolts and is used to install the fixed shell 402. A gear 403 is rotatably connected to the center inside the fixed shell 402. The gear 403 drives the turntable 404 to rotate. A plurality of sliders 405 are slidably connected inside the turntable 404, and the sliders 405 can drive the clamping blocks 407 to move. A groove seat 406 is fixed to the front surface of the fixed shell 402. The back of the inner wall of the groove seat 406 is slidably connected to the clamping block 407, which is used to centrally clamp the end of the output end of the electric telescopic rod. A worm 408 is rotatably connected to the top inside the fixed shell 402 and meshes with the top of the gear 403. Three slideways are annularly arranged on the back of the inner wall of the groove seat 406, and the clamping blocks 407 are respectively slidably connected in the slideways, and the back of the clamping block 407 is rotatably connected to the slider 405 through a pin shaft; connection through holes are provided around the front end of the outer wall of the groove seat 406 for facilitating connection with the end of the output end of the electric telescopic rod.

[0030] During injection molding, the injection mother liquid is injected into the hot runner 303 through the nozzle sleeve. The moving mold 3 and the fixed mold 1 are combined, and the female mold 304 and the male mold 104 are fitted together. The hot nozzle 305 pours the mother liquid into the molding cavity composed of the female mold 304 and the male mold 104. After the pouring is completed, the cooling coil 107 starts to work. Cooling liquid is introduced through the water inlet, flows through the coil to take away heat, and is discharged through the drain port to quickly cool the product in the molding cavity and accelerate the shaping of the product. After the product is shaped, the moving mold 3 and the fixed mold 1 are separated. The air duct 112 inputs gas into the sliding cavity 106 to push the piston 108 to move forward. The piston 108 drives the sliding rod 109 and the ejector block 110 to eject the molded product from inside the male mold 104. At the same time, the gas continuously blows the product to achieve rapid demolding and prepare for the next injection molding.

[0031] When installing the fixed mold 1 and the moving mold 3 on the production equipment, first put the groove seat 406 of the fixing mechanism 4 on the outer wall of the end of the output end of the electric telescopic rod or the hydraulic telescopic rod, and then insert an inner hexagon wrench into the left side at the top inside the fixed shell 402 to rotate the worm 408. The worm 408 drives the gear 403 to rotate. The gear 403 drives the turntable 404 to rotate. The rotation of the turntable 404 causes the slider 405 to slide inside it. The slider 405 drives the clamping block 407 to slide towards the center of the groove seat 406 through a pin shaft, and the fixing mechanism 4 is centrally clamped on the outer wall of the end of the telescopic rod. Subsequently, using the connection through holes of the groove seat 406, it can be firmly connected to the telescopic rod, realizing the adaptive installation of the moving mold 3 and the output ends of telescopic rods of different specifications.

[0032] The above has described a specific embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the application of the present invention.

Claims

1. A hot runner mold, characterized in that: It comprises a fixed mold, a mounting frame is arranged at the back of the fixed mold, a movable mold is arranged at the front end of the fixed mold, and a fixing mechanism is arranged at the center of the front surface of the movable mold; The fixed mold includes a fixed seat plate, a front surface of the fixed seat plate is fixedly connected to a first mold body, a front surface of the first mold body is fixedly connected to a receiving plate, a plurality of convex molds are evenly fixedly connected inside the receiving plate, a partition is fixedly connected to the inner rear end of each of the convex molds, a sliding cavity is opened at a position corresponding to the center of the plurality of convex molds inside the front surface of the first mold body, a cooling coil is coiled around the front end of the outer wall of each of the sliding cavities, a piston is slidably connected to the inner rear end of each of the sliding cavities, a sliding rod is fixedly connected to the front surface of each of the pistons, a top block is fixedly connected to the front surface of each of the sliding rods, a return spring is sleeved on the outer wall of each of the sliding rods, an air channel is opened at the back center of each of the sliding cavities, the mounting frame is threadedly connected to the back of the fixed seat plate by bolts, the front end of each of the cooling coils is attached to the back of the partition corresponding thereto, and each of the top blocks is embedded in the inner center of the partition corresponding thereto.

2. A hot runner mold according to claim 1, characterized in that: The top and bottom ends of the left side of the first mold body are respectively provided with a water inlet and a drain outlet, which are connected to multiple cooling coils. The center of the right side of the first mold body is connected to the external air source through a connecting pipe, and multiple air ducts are all connected to the connecting pipe.

3. A hot runner mold according to claim 1, characterized in that: The outer wall of the piston is sleeved with a rubber sealing ring, and the outer wall of the sealing ring is in contact with the inner wall of the sliding cavity, which can enhance the sealing between the piston and the sliding cavity.

4. A hot runner mold according to claim 1, characterized in that: The movable mold includes a sliding seat plate, the back of the sliding seat plate is fixedly connected to a second mold body, the interior of the second mold body is evenly distributed with multiple hot runners in a rectangular array, the back of the second mold body is fixedly connected to a female mold at positions corresponding to the multiple hot runners, the back of each hot runner is provided with a hot nozzle, and the hot nozzle is embedded in the center of the inner front end of the female mold, the sliding seat plate and the fixed seat plate are on the same horizontal line, and the backs of multiple female molds can be embedded in the front surface of the receiving plate.

5. A hot runner mold according to claim 4, characterized in that: The left and right sides of the front surface of the sliding seat plate are both provided with sprue sleeves, the back of the sprue sleeves is connected with the hot runner, and the front end of the sprue sleeves is connected with the external injection molding mother liquid through a conveying pipe.

6. A hot runner mold according to claim 1, characterized in that: The fixing mechanism includes a fixing plate, a fixing shell is fixedly connected to the center of the front surface of the fixing plate, a gear is rotatably connected to the inner center of the fixing shell, a turntable is fixedly connected to the front surface of the gear, a plurality of sliders are slidably connected to the inside of the turntable, a groove seat is fixedly connected to the front surface of the fixing shell, a plurality of clamping blocks are slidably connected to the back of the inner wall of the groove seat, a worm is rotatably connected to the inner top end of the fixing shell, the bottom end of the worm is meshed with the top end of the gear, and the fixing plate is threadedly connected to the center of the front surface of the sliding seat plate by bolts.

7. A hot runner mold according to claim 6, characterized in that: The inner wall back of the groove seat is provided with three slideways in a circular array, and the plurality of clamping blocks are respectively slidably connected inside the slideways, and the back of the clamping blocks is rotatably connected with the inside of the slider through a pin shaft.

8. A hot runner mold according to claim 6, characterized in that: The front end of the outer wall of the slot seat is surrounded by connecting holes.

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