An injection mold assembly that cools easily

Abstract

The utility model belongs to mould stripping technical field, concretely relates to an injection mold assembly of easy cooling stripping, including female die body, stripping mechanism and buffer mechanism, the utility model discloses a stripping mechanism is set up, when the plastic finished product inside female die body cooling forming, control second air cylinder drives the downward movement of lifting plate can drive first plug rod and move down and separate from female die body, the downward movement of lifting plate can drive second plug rod and separate from second insertion hole simultaneously, thereby can reduce the force that high pressure gas drive plastic finished product just stripping needs during stripping, reduce the speed when plastic finished product stripping, buffer mechanism is set up, when plastic finished product stripping and moving up and contact male die body, reset spring is compressed, reset spring cooperation male die body can play the buffering effect when plastic finished product stripping, further reduce the impact force that plastic finished product received, improve the quality of plastic finished product.

Description

Technical Field

[0001] This invention belongs to the field of mold demolding technology, specifically relating to an injection mold component that is easy to cool and demold. Background Technology

[0002] Injection molds are a type of processing equipment used in plastic molding. They are used to inject heated and molten plastic raw materials into a closed mold cavity under high pressure by pushing them along the screw of an injection molding machine. After cooling and solidification, the mold is opened to remove the finished product. Currently, most demolding is done using demolding tools. Common demolding methods include manual demolding, sliding insert demolding, and pneumatic / hydraulic assisted demolding. Among them, pneumatic assisted demolding results in the finished product moving at a relatively high speed during demolding, making it more susceptible to collisions with other objects and damage.

[0003] Practical content

[0004] The purpose of this invention is to provide an injection mold assembly that is easy to cool and demold, which solves the problem in the prior art where the finished product is easily damaged by collision with other objects when the pneumatically assisted demolding is completed at a high speed.

[0005] The specific technical solution adopted in this utility model is as follows: An injection mold assembly for easy cooling and demolding, comprising: A die body, wherein a pressing mechanism is mounted on the top surface of the die body; A demolding mechanism is disposed on the outer surface of the mold body, and the demolding mechanism is used to reduce the force required for pneumatically assisted demolding of the injection molded part; A buffer mechanism is provided above the mold body and is used to buffer the injection molded part during demolding.

[0006] In a preferred embodiment, the molding mechanism includes a U-shaped plate, a first cylinder, and a punch body. The top surface of the die body is fixedly provided with the U-shaped plate, and the inner top surface of the U-shaped plate is fixedly installed with the first cylinder. The bottom of the first cylinder is installed with the punch body, and the punch body is adapted to the die body and slidably connected to the inner wall of the die body.

[0007] In a preferred embodiment, the demolding mechanism includes a blower box, a second cylinder, a lifting plate, a first insert rod, a connecting block, an extension plate, a connecting rod, a mounting plate, a second insert rod, a baffle plate, and a guide rod. The blower box is fixedly mounted on the bottom surface of the die body. The second cylinder is fixedly mounted inside the blower box. A lifting plate is fixedly mounted on the top surface of the output end of the second cylinder. Multiple first insert rods are fixedly mounted on the top surface of the lifting plate. Symmetrical connecting blocks are fixedly mounted on the left and right sides of the lifting plate. An extension plate is fixedly mounted on the side of the connecting block away from the lifting plate. A connecting rod is hinged to the top surface of the extension plate. A mounting plate is hinged to the other end of the connecting rod. Multiple second insert rods are fixedly mounted on the sides of the mounting plates that are close to each other. Symmetrical guide rods are fixedly mounted on the left and right sides of the die body. A baffle plate is fixedly mounted on the side of the guide rod away from the die body.

[0008] In a preferred embodiment, the outer surface of the blower box is connected to an air blowing pipe; the front and rear sides and the left and right sides of the lifting plate are slidably connected to the inner wall of the blower box; the bottom surface of the die body is provided with a first insertion hole adapted to a first insertion rod, and the first insertion rod is slidably connected to the die body through the first insertion hole; the side of the blower box is provided with a vertical groove adapted to a connecting block, and the connecting block is slidably connected to the blower box through the vertical groove; a baffle is fixedly provided on the top surface of the extension plate, and the side of the baffle is slidably connected to the die body; the left and right sides of the die body are provided with second insertion holes adapted to second insertion rods, and the second insertion rods are slidably connected to the die body through the second insertion holes; and the guide rod passes through the mounting plate and is slidably connected to the mounting plate.

[0009] In a preferred embodiment, the buffer mechanism includes a pressure plate, a return spring, a vertical rod, a circular plate, a fixing ring, and a sleeve. The pressure plate is fixedly installed at the output end of the first cylinder. Symmetrical return springs and symmetrical vertical rods are fixedly installed on the bottom surface of the pressure plate. The other end of the return spring is fixedly connected to the punch body. A circular plate is fixedly installed on the bottom surface of the vertical rod. A sleeve adapted to the circular plate is fixedly installed on the top surface of the punch body. The circular plate passes through the sleeve and is slidably connected to the sleeve. A fixing ring is fixedly installed on the top surface of the sleeve, and the vertical rod passes through the fixing ring.

[0010] In a preferred embodiment, the mounting plate has a plurality of heat dissipation grooves extending through its side, and the second insert has a horizontal groove on the side near the mounting plate, the horizontal groove being connected to the heat dissipation grooves.

[0011] The technical effects achieved by this utility model are as follows: This invention, by setting up a demolding mechanism, allows the plastic product inside the mold body to cool and solidify after cooling. Controlling the second cylinder to move the lifting plate downwards can simultaneously move the first insert rod downwards and disengage it from the mold body. A blower pipe connects to an external air pump and blows high-pressure gas above the lifting plate inside the blower box. The high-pressure gas blows the plastic product out of the mold body along the first insert hole, achieving demolding. As the lifting plate moves downwards, it can also move the connecting blocks and extension plates on both sides downwards together. The movement of the extension plates causes the connecting rod to rotate simultaneously. The rotation of the connecting rod causes the two mounting plates to move away from each other. The movement of the mounting plates causes the second insert rod to disengage from the second insert hole and the plastic product. Thus, during demolding, the force required for the high-pressure gas to drive the plastic product to demold is reduced, and the speed of demolding of the plastic product is reduced. This invention incorporates a buffer mechanism. When the finished plastic product is demolded and moves upward, it contacts the punch body, compressing the return spring. The return spring, in conjunction with the punch body, acts as a buffer during demolding, further reducing the impact force on the finished plastic product and improving its quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic cross-sectional view of the main structure of this utility model; Figure 3 This is a schematic cross-sectional view of the demolding mechanism of this utility model; Figure 4 This is a cross-sectional structural diagram of the buffer mechanism of this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 100. Die body; 200. Pressing mechanism; 201. U-shaped plate; 202. First cylinder; 203. Punch body; 300. Demolding mechanism; 301. Air box; 302. Second cylinder; 303. Lifting plate; 304. First insert rod; 305. Connecting block; 306. Extension plate; 307. Connecting rod; 308. Mounting plate; 309. Second insert rod; 310. Baffle plate; 311. Guide rod; 400. Buffer mechanism; 401. Pressure plate; 402. Return spring; 403. Vertical rod; 404. Circular plate; 405. Fixing ring; 406. Sleeve; 500, baffle; 600. Air blowing tube; 700, heat dissipation slot. Detailed Implementation

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0017] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0018] Please see the appendix Figures 1 to 2 As shown, this utility model provides an injection mold assembly for easy cooling and demolding, including: a cavity mold body 100, a demolding mechanism 300, and a buffer mechanism 400. A pressing mechanism 200 is installed on the top surface of the cavity mold body 100. The pressing mechanism 200 consists of a U-shaped plate 201, a first cylinder 202, and a punch body 203. The U-shaped plate 201 is fixedly installed on the top surface of the cavity mold body 100. The first cylinder 202 is fixedly installed on the inner top surface of the U-shaped plate 201. The punch body 203 is installed at the bottom of the first cylinder 202. The punch body 203 is adapted to the cavity mold body 100 and is slidably connected to the inner wall of the cavity mold body 100. The top surface of the punch body 203 is connected to an injection port. By controlling the first cylinder 202, the punch body 203 is moved downward and extended into the cavity mold body 100. The heated and molten plastic raw material is injected into the cavity mold body 100 through the injection port. After cooling, a finished plastic product can be obtained.

[0019] In a preferred embodiment, please refer to Figures 1 to 3A demolding mechanism 300 is provided on the outer surface of the die body 100. The demolding mechanism 300 consists of an air box 301, a second cylinder 302, a lifting plate 303, a first insert rod 304, a connecting block 305, an extension plate 306, a connecting rod 307, a mounting plate 308, a second insert rod 309, a baffle plate 310, and a guide rod 311. An air box 301 is fixedly installed on the bottom surface of the die body 100. The top surface of the air box 301 is open. A second cylinder 302 is fixedly installed on the bottom surface inside the air box 301. A lifting plate 303 is fixedly installed on the top surface of the output end of the second cylinder 302. Multiple first insert rods 304 are fixedly installed on the top surface of the lifting plate 303. 3. A high-temperature resistant rubber sealing gasket is pasted on the top surface. Symmetrical connecting blocks 305 are fixedly installed on the left and right sides of the lifting plate 303. An extension plate 306 is fixedly installed on the side of the connecting block 305 away from the lifting plate 303. A connecting rod 307 is hinged to the top surface of the extension plate 306. An installation plate 308 is hinged to the other end of the connecting rod 307. Multiple second insert rods 309 are fixedly installed on the side of the installation plate 308 that are close to each other. A high-temperature resistant rubber sealing gasket is pasted on the side of the installation plate 308 that is close to each other. Symmetrical guide rods 311 are fixedly installed on the left and right sides of the die body 100. A baffle plate 310 is fixedly installed on the side of the guide rod 311 away from the die body 100.

[0020] In this embodiment, an air blowing pipe 600 is connected to the outer surface of the blower box 301, and the air blowing pipe 600 is connected to an external air pump. The lifting plate 303 is slidably connected to the inner wall of the blower box 301 on both the front and rear sides and the left and right sides. A first insertion hole for the first insertion rod 304 is provided through the bottom surface of the die body 100. The first insertion rod 304 is slidably connected to the die body 100 through the first insertion hole. The length of the first insertion rod 304 is the same as that of the first insertion hole. A vertical groove for the connecting block 305 is provided through the side of the blower box 301. The connecting block 305 is slidably connected to the blower box 301 through the vertical groove. The top surface of the extension plate 306 is fixedly provided with... A baffle 500 is provided, and the side of the baffle 500 is slidably connected to the die body 100. The baffle 500 is used to cover the vertical groove to prevent air leakage when the extension plate 306 is moved to the lowest position. The die body 100 has second insertion holes through the left and right sides to accommodate the second insertion rod 309. The second insertion rod 309 is slidably connected to the die body 100 through the second insertion hole. The length of the second insertion rod 309 is the same as that of the second insertion hole. The guide rod 311 passes through the mounting plate 308 and is slidably connected to the mounting plate 308. When the first insertion rod 304 is just fully inserted into the first insertion hole, the second insertion rod 309 is just fully inserted into the second insertion hole.

[0021] In this embodiment, the guide rod 311 is used to guide the movement of the mounting plate 308. After the plastic product inside the mold body 100 cools and forms, controlling the second cylinder 302 to drive the lifting plate 303 to move downward can drive the first insert rod 304 to move downward at the same time and disengage from the mold body 100. The air pump is connected to the outside through the air pipe 600 and high-pressure gas is blown above the lifting plate 303 inside the air box 301. The high-pressure gas can blow the plastic product out of the mold body 100 along the first insertion hole to achieve demolding. When the lifting plate 303 moves downward, it can drive the connecting blocks 305 and the extension plate 306 on both sides to move downward together. The movement of the extension plate 306 drives the connecting rod 307 to rotate at the same time. The rotation of the connecting rod 307 drives the two mounting plates 308 to move away from each other. The movement of the mounting plate 308 drives the second insert rod 309 to disengage from the second insertion hole and the plastic product. Thus, during demolding, the force required for the high-pressure gas to drive the plastic product to just demold can be reduced, and the speed of the plastic product demolding can be reduced.

[0022] In a preferred embodiment, please refer to Figures 1 to 4 A buffer mechanism 400 is provided above the die body 100. The buffer mechanism 400 consists of a pressure plate 401, a return spring 402, a vertical rod 403, a circular plate 404, a fixing ring 405, and a sleeve 406. The output end of the first cylinder 202 is fixedly provided with a pressure plate 401. The bottom surface of the pressure plate 401 is fixedly provided with symmetrical return springs 402 and symmetrical vertical rods 403. The other end of the return spring 402 is fixedly connected to the punch body 203. The bottom surface of the vertical rod 403 is fixedly provided with a circular plate 404. The top surface of the punch body 203 is fixedly provided with a sleeve 406 that is adapted to the circular plate 404. The circular plate 404 passes through the sleeve 406 and is slidably connected to the sleeve 406. The top surface of the sleeve 406 is fixedly provided with a fixing ring 405, and the vertical rod 403 passes through the fixing ring 405.

[0023] In this embodiment, extending the output end of the first cylinder 202 can drive the pressure plate 401 to move downward. The movement of the pressure plate 401 drives the return spring 402, the vertical rod 403, and the circular plate 404 to move downward, thereby driving the punch body 203 to move downward. When the plastic product cools and forms, retracting the output end of the first cylinder 202 drives the pressure plate 401 to move upward, thereby driving the vertical rod 403 and the circular plate 404 to move upward. The circular plate 404 contacts the fixing ring 405 and drives the fixing ring 405 to move upward. The movement of the fixing ring 405 drives the sleeve 406 and the punch body 203 to move upward until the punch body 203 moves back to its original position. When the plastic product is demolded and moves upward, it contacts the punch body 203, and the return spring 402 is compressed. The return spring 402, together with the punch body 203, can play a buffering role when the plastic product is demolded, further reducing the impact force on the plastic product and improving the quality of the plastic product.

[0024] In a preferred embodiment, please refer to Figures 1 to 3 The mounting plate 308 has multiple heat dissipation slots 700 running through its side. The second insert 309 has a horizontal slot on the side near the mounting plate 308. The horizontal slot is connected to the heat dissipation slots 700. The heat dissipation slots 700, together with the horizontal slots, can accelerate the heat exchange between the plastic material and the outside air, thereby improving the cooling efficiency.

[0025] The working principle of this utility is as follows: When the device is in use, the extension of the output end of the first cylinder 202 can drive the pressure plate 401 to move downward. The movement of the pressure plate 401 drives the return spring 402, the vertical rod 403 and the circular plate 404 to move downward, thereby driving the punch body 203 to move downward and extend into the cavity mold body 100. The heated and molten plastic raw material is injected into the cavity mold body 100 through the injection port. After cooling, a finished plastic product can be obtained. The heat dissipation groove 700, together with the horizontal groove, can improve the cooling efficiency. When the finished plastic product is cooled and formed, the retraction of the output end of the first cylinder 202 drives the pressure plate 401 to move upward, thereby driving the vertical rod 403 and the circular plate 404 to move upward. The circular plate 404 contacts the fixing ring 405 and drives the fixing ring 405 to move upward. The movement of the fixing ring 405 drives the sleeve 406 and the punch body 203 to move upward until the punch body 203 moves back to its original position.

[0026] Controlling the second cylinder 302 to move the lifting plate 303 downwards can simultaneously move the first insert rod 304 downwards and disengage it from the die body 100. Simultaneously, the downward movement of the lifting plate 303 can also move the connecting blocks 305 and extension plate 306 downwards together. The movement of the extension plate 306 causes the connecting rod 307 to rotate simultaneously. The rotation of the connecting rod 307 causes the two mounting plates 308 to move away from each other. The movement of the mounting plates 308 causes the second insert rod 309 to disengage from the second insertion hole and the finished plastic product. The disengagement of the second insert rod 309 from the finished plastic product can reduce the need for high-pressure gas during demolding. The plastic product is just the force required for demolding, reducing the speed of demolding. High-pressure gas is blown above the lifting plate 303 inside the blow box 301 through the air pipe 600 connected to an external air pump. The high-pressure gas can blow the plastic product out to the outside of the cavity mold body 100 through the first insertion hole to achieve demolding. When the plastic product is demolded and moves upward, it contacts the punch body 203, and the return spring 402 is compressed. The return spring 402, together with the punch body 203, can play a buffering role when the plastic product is demolded, further reducing the impact force on the plastic product and improving the quality of the plastic product.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. An injection mold assembly that facilitates cooling and demolding, characterized in that: include: A die body (100) has a pressing mechanism (200) mounted on its top surface. A demolding mechanism (300) is provided on the outer surface of the mold body (100). The demolding mechanism (300) is used to reduce the force required for pneumatically assisted demolding of the injection molded part. A buffer mechanism (400) is disposed above the mold body (100) and is used to buffer the injection molded part during demolding.

2. The injection mold assembly for easy cooling and demolding according to claim 1, characterized in that: The molding mechanism (200) includes a U-shaped plate (201), a first cylinder (202) and a punch body (203). The top surface of the die body (100) is fixedly provided with the U-shaped plate (201). The first cylinder (202) is fixedly installed on the inner top surface of the U-shaped plate (201). The bottom of the first cylinder (202) is installed with the punch body (203). The punch body (203) is adapted to the die body (100) and is slidably connected to the inner wall of the die body (100).

3. The injection mold assembly for easy cooling and demolding according to claim 1, characterized in that: The demolding mechanism (300) includes a blower box (301), a second cylinder (302), a lifting plate (303), a first insert rod (304), a connecting block (305), an extension plate (306), a connecting rod (307), a mounting plate (308), a second insert rod (309), a baffle plate (310), and a guide rod (311). The blower box (301) is fixedly installed on the bottom surface of the die body (100). The second cylinder (302) is fixedly installed on the bottom surface inside the blower box (301). The lifting plate (303) is fixedly installed on the top surface of the output end of the second cylinder (302). A plurality of first insert rods are fixedly installed on the top surface of the lifting plate (303). (304) Symmetrical connecting blocks (305) are fixedly provided on the left and right sides of the lifting plate (303). An extension plate (306) is fixedly provided on the side of the connecting block (305) away from the lifting plate (303). A connecting rod (307) is hinged to the top surface of the extension plate (306). An installation plate (308) is hinged to the other end of the connecting rod (307). Multiple second insert rods (309) are fixedly provided on the side of the installation plate (308) that are close to each other. Symmetrical guide rods (311) are fixedly provided on the left and right sides of the die body (100). A baffle (310) is fixedly provided on the side of the guide rod (311) away from the die body (100).

4. The injection mold assembly for easy cooling and demolding according to claim 3, characterized in that: The outer surface of the blower box (301) is connected to an air blowing pipe (600). The lifting plate (303) is slidably connected to the inner wall of the blower box (301) on both the front and rear sides and the left and right sides. The bottom surface of the die body (100) is provided with a first insertion hole adapted to the first insertion rod (304). The first insertion rod (304) is slidably connected to the die body (100) through the first insertion hole. The side of the blower box (301) is provided with a vertical groove adapted to the connecting block (305). The connecting block (305) is connected to the connecting block (305) through the vertical groove. The groove is slidably connected to the blower box (301). A baffle (500) is fixedly provided on the top surface of the extension plate (306). The side of the baffle (500) is slidably connected to the die body (100). The die body (100) has second insertion holes for the second insertion rod (309) through the left and right sides. The second insertion rod (309) is slidably connected to the die body (100) through the second insertion hole. The guide rod (311) passes through the mounting plate (308) and is slidably connected to the mounting plate (308).

5. The injection mold assembly for easy cooling and demolding according to claim 2, characterized in that: The buffer mechanism (400) includes a pressure plate (401), a return spring (402), a vertical rod (403), a circular plate (404), a fixing ring (405), and a sleeve (406). The pressure plate (401) is fixedly installed at the output end of the first cylinder (202). The bottom surface of the pressure plate (401) is fixedly provided with symmetrical return springs (402) and symmetrical vertical rods (403). The other end of the return spring (402) is fixedly connected to the punch body (203). The bottom surface of the vertical rod (403) is fixedly provided with a circular plate (404). The top surface of the punch body (203) is fixedly provided with a sleeve (406) that is adapted to the circular plate (404). The circular plate (404) passes through the sleeve (406) and is slidably connected to the sleeve (406). The top surface of the sleeve (406) is fixedly provided with a fixing ring (405), and the vertical rod (403) passes through the fixing ring (405).

6. The injection mold assembly for easy cooling and demolding according to claim 3, characterized in that: The mounting plate (308) has multiple heat dissipation slots (700) through its side. The second insert (309) has a horizontal slot on the side near the mounting plate (308), and the horizontal slot is connected to the heat dissipation slots (700).

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