Plastic mold capable of automatically cutting off pouring gate

Abstract

The invention relates to the technical field of injection molds, in particular to a plastic mold with an automatic sprue cutting function. Comprising a first mold and a second mold, the second mold is arranged on the side edge of the first mold, an injection molding opening is formed in the first mold, a first mold plate is installed on the first mold in a sliding mode, and a second mold plate is installed on the second mold in a sliding mode. Through cooperation of the first mold plate, the second mold plate and the limiting mechanism, when different plastic products are produced, different products can be produced by replacing the first mold plate and the second mold plate, operation is convenient, consumed time is short, the downtime is shortened, and the production efficiency is improved. Meanwhile, the operation efficiency of the whole production line is greatly improved, through the design of a movable plate, a magnetic block and a magnetic plate, precise control over a through hole and an injection molding opening is achieved in combination with a translation mechanism, a sprue can be automatically cut off after injection molding is completed, follow-up manual cutting or secondary machining is not needed, the production efficiency is greatly improved, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and particularly to a plastic mold with automatic gate cutting. Background Art

[0002] With the wide use of plastic products in daily life and industrial applications, the demand for plastic molds is also increasing day by day. Plastic molds are key tools for manufacturing plastic products, and thermoplastic or thermosetting materials are made into parts or products with specific shapes through processes such as injection molding and extrusion molding. Although traditional plastic mold technologies can meet basic production requirements, they gradually expose some deficiencies when faced with the requirements of modern efficient and flexible production.

[0003] Firstly, in the actual production process, when it is necessary to switch to producing different types of products according to market demand or product design changes, it is often necessary to replace the existing mold. However, within the framework of the existing technology, this process takes a long time and usually requires complex disassembly and reinstallation steps for the mold, which not only increases the downtime but also significantly reduces the operating efficiency of the overall production line, affecting the economic benefits of the enterprise. In addition, another common problem is that after the product is injection molded, there are usually gates (i.e., the entrances when plastic raw materials are injected into the mold cavity) on the product, and these gates need to be removed through manual cutting or using special mechanical devices for secondary processing in most cases to meet the quality requirements of the final product. However, this additional process not only increases the production cost but also further slows down the production rhythm, resulting in low production efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a plastic mold with automatic gate cutting, which can solve the problems that when the existing mold needs to be replaced according to different products, the replacement process takes a long time, not only increasing the downtime but also significantly reducing the operating efficiency of the overall production line, and that after the existing mold injects the product, the gates generated on the product need to be processed subsequently, not only increasing the production cost but also resulting in low production efficiency.

[0005] The technical solution is as follows: A plastic mold with automatic gate removal includes a first mold and a second mold, the second mold is arranged on the side of the first mold, an injection port is opened on the first mold, a first template is slidably installed on the first mold, and a second template is slidably installed on the second mold, the first template and the second template are both used for molten plastic molding, the first mold and the second mold are both provided with a limiting mechanism, the limiting mechanism is used to limit the first template and the second template, a guide frame is installed on the first mold, a movable block is slidably arranged on the guide frame, and a translation mechanism is also arranged on the guide frame, the translation mechanism is used to drive the movable block to move, a magnetic plate is connected to the movable block, a movable plate is slidably arranged on the first template, a through hole is opened on the movable plate, the through hole is aligned with the injection port, a magnetic block is connected to the movable plate, the magnetic block and the magnetic plate are adsorbed, after the movable plate moves, the through hole and the injection port are staggered to remove the gate of the plastic product, and a blower mechanism is installed on the second mold, and the blower mechanism is used to blow out the plastic waste in the through hole.

[0006] Preferably, the limiting mechanism includes a first electric push rod and a limiting block. The first electric push rod is installed on the sides of the first mold and the second mold. The limiting block is connected to the telescopic rod of the first electric push rod. The limiting block is used to limit the first template and the second template.

[0007] Preferably, the translation mechanism includes a motor and a screw, the motor is mounted on the guide rail frame, a screw is rotatably arranged in the guide rail frame, the end of the screw is connected to the output shaft of the motor, and the movable block is threadedly connected to the screw.

[0008] Preferably, the blowing mechanism comprises an air compressor, a nozzle and an air pipe; the air compressor and the nozzle are installed on the side of the second mold; and the air outlet of the air compressor is connected to the nozzle through the air pipe.

[0009] Preferably, a cooling mechanism is further included, and the cooling mechanism includes a water inlet pipe and a water outlet pipe. The tops of the first mold and the second mold are both connected to the water inlet pipe, and the bottoms of the first mold and the second mold are both connected to the water outlet pipe.

[0010] Preferably, a heating mechanism is also included, which includes a second electric push rod, a heat-conducting frame and a heating module. The second electric push rod is arranged on the inner sides of the first mold and the second mold. The heat-conducting frame is slidably arranged on the inner sides of the first mold and the second mold. The heat-conducting frame in the first mold is in contact with the first template, and the heat-conducting frame in the second mold is in contact with the second template. The heat-conducting frame is used to transfer heat to the first template and the second template. The heat-conducting frame is connected to the telescopic rod of the second electric push rod. The heating module is installed on the inner side of the heat-conducting frame, and the heating module is used to heat the heat-conducting frame.

[0011] Preferably, a cleaning mechanism is further included. The cleaning mechanism includes an electric slide rail and an electric cleaning brush. The electric slide rail is mounted on the side of the second mold, and the electric cleaning brush is rotatably mounted on the slider of the electric slide rail. The electric cleaning brush is used to clean the foreign matters adhered to the surfaces of the first template and the second template.

[0012] Preferably, a spraying mechanism is further included. The spraying mechanism includes a water pump, a connecting pipe and a nozzle. The water pump and the connecting pipe are arranged on the slider of the electric slide rail. The connecting pipe is communicated with the water outlet of the water pump, and the nozzles are communicated with the connecting pipe at intervals. The nozzles are used to spray the release agent onto the surfaces of the first template and the second template.

[0013] The present invention has the following advantages: 1. Through the cooperation of the first template, the second template and the limiting mechanism, when facing the production of different plastic products, by replacing the first template and the second template, different products can be adapted for production. It is not only convenient to operate, but also time-consuming less, reducing the downtime, and at the same time greatly improving the operation efficiency of the overall production line. And through the design of the movable plate, the magnetic block and the magnetic plate, combined with the translation mechanism, the precise control of the through hole and the injection port can be realized, and the gate can be automatically cut off after injection molding, without subsequent manual cutting or secondary processing, greatly improving the production efficiency and reducing the cost.

[0014] 2. By setting the heating mechanism, the first template and the second template can be preheated before injection molding to prevent the molten plastic from cooling prematurely, ensuring that the plastic can fully fill the mold cavity and avoiding product defects caused by temperature differences. The cooling mechanism is set to accelerate the curing process of the plastic product, so that the product can be demolded faster, further improving the production efficiency.

[0015] 3. By integrating the cleaning mechanism and the spraying mechanism, the automatic cleaning of the mold surface and the uniform spraying of the release agent are realized, which not only ensures the appearance quality of the product, but also reduces the manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a separated structural diagram of the first template, the second template and the limiting mechanism of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the translation mechanism of the present invention.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the movable plate, the through hole and the magnetic block of the present invention.

[0020] Figure 5 It is a separated structural diagram of the movable plate, the through hole and the magnetic block of the present invention.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the blowing mechanism and the cooling mechanism of the present invention.

[0022] Figure 7 This is a three-dimensional structural schematic diagram of the heating mechanism of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the electric slide rail, the electric cleaning brush and the nozzle of the present invention.

[0024] Figure 9 This is a three-dimensional structural schematic diagram of the cleaning mechanism and the spraying mechanism of the present invention.

[0025] Reference numerals in the drawings: 1: first mold, 2: second mold, 3: injection port, 4: first template, 5: second template, 601: first electric push rod, 602: limit block, 7: guide rail frame, 8: movable block, 901: motor, 902: lead screw, 10: magnetic plate, 11: movable plate, 12: through hole, 13: magnetic block, 1401: air compressor, 1402: nozzle, 1403: air pipe, 15: water inlet pipe, 16: water outlet pipe, 17: second electric push rod, 18: heat conduction frame, 19: heating module, 20: electric slide rail, 21: electric cleaning brush, 22: water pump, 23: connecting pipe, 24: nozzle. Detailed implementation manners

[0026] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0027] Embodiment: A plastic mold with automatic gate cutting, refer to Figures 1-6 as shown in the figure, which includes a first mold 1 and a second mold 2; the second mold 2 is arranged on the right side of the first mold 1, and an injection port 3 is opened in the middle of the first mold 1, and the injection port 3 is used for injecting molten plastic; It also includes a first template 4, a second template 5, a limiting mechanism, a guide rail frame 7, a movable block 8, a translation mechanism, a magnetic plate 10, a movable plate 11, a magnetic block 13 and a blowing mechanism; the first template 4 is slidably installed on the right side of the first mold 1; the second template 5 is slidably installed on the left side of the second mold 2, and both the first template 4 and the second template 5 are used for plastic molding in a molten state; limiting mechanisms are provided on both the first mold 1 and the second mold 2, and the limiting mechanisms are used to limit the first template 4 and the second template 5, thereby fixing the positions of the first template 4 and the second template 5; a guide rail frame 7 is installed at the rear side inside the first mold 1; a movable block 8 is slidably arranged on the guide rail frame 7; a translation mechanism is also provided on the guide rail frame 7, and the translation mechanism is used to drive the movable block 8 to move; the right side of the movable block 8 is connected to a magnetic plate 10; a movable plate 11 is slidably arranged in the middle of the left side of the first template 4, a through hole 12 is formed in the movable plate 11, and the through hole 12 is aligned with the injection port 3; a magnetic block 13 is connected to the rear side of the movable plate 11, and the magnetic block 13 is adsorbed to the magnetic plate 10. By driving the movable block 8 to move through the translation mechanism, the movable block 8 can drive the movable plate 11 to move synchronously through the magnetic block 13 and the magnetic plate 10, and after the movable plate 11 moves, the through hole 12 can be staggered from the injection port 3 to remove the gate of the plastic product; a blowing mechanism is installed on the second mold 2, and the blowing mechanism is used to blow out the plastic waste in the through hole 12.

[0028] See Figure 1 and Figure 2 As shown, the limiting mechanism includes a first electric push rod 601 and a limiting block 602; two first electric push rods 601 are provided on the front sides of both the first mold 1 and the second mold 2; a limiting block 602 is connected to the telescopic rod of the first electric push rod 601, and the limiting block 602 is used to limit the first template 4 and the second template 5.

[0029] See Figure 3 As shown, the translation mechanism includes a motor 901 and a lead screw 902; the motor 901 is installed at the rear side of the guide rail frame 7; a lead screw 902 is rotatably arranged inside the guide rail frame 7, the rear end of the lead screw 902 is connected to the output shaft of the motor 901, and the movable block 8 is threadedly connected to the lead screw 902.

[0030] See Figure 6 As shown, the blowing mechanism includes an air compressor 1401, a nozzle 1402 and an air pipe 1403; the air compressor 1401 and the nozzle 1402 are installed in the middle of the front side of the second mold 2, the nozzle 1402 is located on the left side of the air compressor 1401, and the air outlet of the air compressor 1401 is communicated with the nozzle 1402 through the air pipe 1403.

[0031] When in use, first install the first mold 1 and the second mold 2 on the injection molding machine, and then control the first mold 1 and the second mold 2 to approach each other through the injection molding machine, until the first mold 1 and the second mold 2 are accurately aligned and tightly closed, so that a complete mold cavity is formed between the first template 4 and the second template 5, and then the molten plastic is injected through the injection port 3, so that the molten plastic flows into the mold cavity through the injection port 3 and the through hole 12, until the molten plastic fills the mold cavity, and then the motor 901 drives the screw rod 902 to rotate, so that the screw rod 902 drives the movable block 8 to move forward, thereby driving the magnetic plate 10, the magnetic block 13 and the movable plate 11 to move forward until the through hole 12 on the movable plate 11 is aligned with the nozzle 1402. When the movable plate 11 moves forward, the through hole 12 on the movable plate 11 will be staggered with the injection port 3. At this time, the movable plate 11 can be used to disconnect the molten plastic between the mold cavity and the injection port 3, thereby After molding, the gate on the plastic product is removed, and then the molten plastic in the mold cavity is cooled and molded until the molten plastic forms a plastic product, and then the compressed air is introduced into the nozzle 1402 through the air pipe 1403 by the air compressor 1401, so that the nozzle 1402 blows out the compressed air toward the through hole 12, so as to blow out the waste in the through hole 12 (the molten plastic in the through hole 12 forms waste after molding), and then the motor 901 drives the screw rod 902 to reverse, so that the screw rod 902 drives the movable block 8 to move backward and reset, thereby driving the magnetic plate 10, the magnetic block 13 and the movable plate 11 to move backward and reset, until the through hole 12 on the movable plate 11 is aligned with the injection port 3, and then the first mold 1 and the second mold 2 are controlled by the injection molding machine to move away from each other, so that the first template 4 and the second template 5 are separated, and then the plastic product is removed from the first template 4 or the second template 5, so that the plastic injection molding can be completed; Before replacing different products for production, control the telescopic rod of the first electric push rod 601 to shorten, so that the telescopic rod of the first electric push rod 601 drives the limit block 602 to move, so that the limit block 602 releases the limit on the first template 4 and the second template 5. Then, pull out the first template 4 and the second template 5 forward, and pull out the movable block 8 and the magnetic plate 10 on the first template 4 together forward, so that the magnetic plate 10 is separated from the magnetic block 13. Then, push the first template 4 and the second template 5 adapted to the product back to their original positions, and push the movable block 8 and the magnetic plate 10 adapted to the first template 4 back together, so that the magnetic plate 10 contacts the magnetic block 13 again, and the magnetic block 13 attracts the magnetic plate 10. Then, control the telescopic rod of the first electric push rod 601 to extend, so that the telescopic rod of the first electric push rod 601 drives the limit block 602 to move back to its original position, so that the limit block 602 limits the first template 4 and the second template 5. After that, the first template 4 and the second template 5 can be used to produce different products. By adopting the above method, only by replacing the first template 4 and the second template 5, different products can be adapted for production. It is not only convenient to replace, but also takes less time, reduces the downtime, and greatly improves the operation efficiency of the overall production line.

[0032] See Figure 6 As shown, it further includes a cooling mechanism. The cooling mechanism includes a water inlet pipe 15 and a water outlet pipe 16; the tops of the first mold 1 and the second mold 2 are both connected to the water inlet pipe 15, and the water inlet pipe 15 is used to introduce the coolant into the first mold 1 and the second mold 2; the bottoms of the first mold 1 and the second mold 2 are both connected to the water outlet pipe 16, and the water outlet pipe 16 is used to discharge the coolant in the first mold 1 and the second mold 2.

[0033] See Figure 7 As shown, it further includes a heating mechanism. The heating mechanism includes a second electric push rod 17, a heat conduction frame 18 and a heating module 19; the second electric push rods 17 are arranged at intervals on the inner sides of the first mold 1 and the second mold 2; the heat conduction frames 18 are slidably arranged on the inner sides of the first mold 1 and the second mold 2. The right side of the heat conduction frame 18 in the first mold 1 contacts the left side of the first template 4, and the left side of the heat conduction frame 18 in the second mold 2 contacts the right side of the second template 5. The heat conduction frame 18 is used to transfer heat to the first template 4 and the second template 5, and the heat conduction frame 18 is connected to the telescopic rod of the second electric push rod 17; a heating module 19 is installed inside the heat conduction frame 18, and the heating module 19 is used to heat the heat conduction frame 18.

[0034] By setting up a cooling mechanism and a heating mechanism, when it is necessary to inject molten plastic through the injection port 3, the heat conduction frame 18 can be preheated in advance by the heating module 19, so that the heat conduction frame 18 transfers heat to the first template 4 and the second template 5, thereby preheating the first template 4 and the second template 5. In this way, when the molten plastic enters the mold cavity between the first template 4 and the second template 5, it can prevent the molten plastic from being rapidly cooled and solidified due to the temperature of the first template 4 and the second template 5, thus avoiding the problem of insufficient filling. When the molten plastic fills the mold cavity, then control the telescopic rod of the second electric push rod 17 to shorten, so that the telescopic rod of the second electric push rod 17 drives the heat conduction frame 18 to move, so that the heat conduction frame 18 is separated from the first template 4 or the second template 5, and a space is separated between the heat conduction frame 18 and the first template 4 or the second template 5. Then, continuously introduce the coolant through the water inlet pipe 15 into the inner sides of the first mold 1 and the second mold 2, so that the coolant passes through the space between the heat conduction frame 18 and the first template 4 or the second template 5, and then discharges from the water outlet pipe 16. When the coolant flows through the inner sides of the first mold 1 and the second mold 2, the coolant will cool down the first template 4 or the second template 5, thereby accelerating the cooling of the molten plastic in the mold cavity, and further accelerating the cooling and molding of the molten plastic. After the molten plastic is cooled and molded, then stop introducing the coolant into the inner sides of the first mold 1 and the second mold 2, and then control the telescopic rod of the second electric push rod 17 to extend, so that the telescopic rod of the second electric push rod 17 drives the heat conduction frame 18 to move back to its original position, so that the heat conduction frame 18 contacts the first template 4 or the second template 5 again.

[0035] See Figure 8 and Figure 9 As shown, it further includes a cleaning mechanism, and the cleaning mechanism includes an electric slide rail 20 and an electric cleaning brush 21; an electric slide rail 20 is installed at the rear side of the second mold 2; an electric cleaning brush 21 is rotatably installed at the upper left side of the slider of the electric slide rail 20, and the electric cleaning brush 21 is used to clean foreign matters adhered to the surfaces of the first template 4 and the second template 5.

[0036] See Figure 8 and Figure 9 As shown, it further includes a spraying mechanism, and the spraying mechanism includes a water pump 22, a connecting pipe 23 and a spray head 24; a water pump 22 is arranged at the rear side of the slider of the electric slide rail 20, a connecting pipe 23 is installed at the lower left side of the slider of the electric slide rail 20, and the connecting pipe 23 is communicated with the water outlet of the water pump 22; spray heads 24 are communicated with the connecting pipe 23 at intervals, and the spray heads 24 are used to spray the release agent onto the surfaces of the first template 4 and the second template 5.

[0037] By setting up a cleaning mechanism and a spraying mechanism, during use, the water inlet of the water pump 22 can be connected to a container filled with a demolding agent; when it is necessary to control the first mold 1 and the second mold 2 to approach each other through an injection molding machine, the electric cleaning brush 21, the connecting pipe 23 and the nozzle 24 can be first driven to move downward by the electric slide rail 20, and at the same time, the electric cleaning brush 21 is controlled to start, so that the electric cleaning brush 21 contacts the surfaces of the first template 4 and the second template 5, thereby enabling the electric cleaning brush 21 to brush the surfaces of the first template 4 and the second template 5, so as to clean foreign matters such as dust and particles adhered to the surfaces of the first template 4 and the second template 5, preventing foreign matters such as dust and particles from affecting the appearance quality of the plastic product after molding; after the foreign matters such as dust and particles adhered to the surfaces of the first template 4 and the second template 5 are cleaned, the electric cleaning brush 21 is then controlled to be turned off, and then the electric cleaning brush 21, the connecting pipe 23 and the nozzle 24 are driven to move upward and reset by the electric slide rail 20, and at the same time, the water pump 22 is controlled to start, so that the water pump 22 pumps the demolding agent into the connecting pipe 23, thereby enabling the demolding agent to be sprayed onto the surfaces of the first template 4 and the second template 5 through the nozzle 24, and further realizing the automatic spraying of the demolding agent. After the surfaces of the first template 4 and the second template 5 are sprayed with the demolding agent, the water pump 22 can be turned off.

[0038] The above are only examples of the present invention and are not intended to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included within the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art in the technical field of the present profession.

Claims

1. A plastic mold with an automatic gate removal, comprising a first mold (1) and a second mold (2), wherein the second mold (2) is arranged on the side of the first mold (1), and an injection port (3) is opened on the first mold (1), characterized in that: A first template (4) is slidably mounted on the first mold (1), and a second template (5) is slidably mounted on the second mold (2). Both the first template (4) and the second template (5) are used for molding molten plastic. Both the first mold (1) and the second mold (2) are provided with a limiting mechanism, which is used to limit the first template (4) and the second template (5). A guide rail frame (7) is mounted on the first mold (1), and a movable block (8) is slidably mounted on the guide rail frame (7). A translation mechanism is also provided on the guide rail frame (7), and the translation mechanism is used to drive the movable block (8). The movable block (8) is moved, a magnetic plate (10) is connected to the movable block (8), a movable plate (11) is slidably arranged on the first template (4), a through hole (12) is opened on the movable plate (11), the through hole (12) is aligned with the injection port (3), a magnetic block (13) is connected to the movable plate (11), the magnetic block (13) and the magnetic plate (10) are attracted to each other, after the movable plate (11) moves, the through hole (12) and the injection port (3) are offset to remove the gate of the plastic product, and a blower mechanism is installed on the second mold (2), the blower mechanism is used to blow out the plastic waste in the through hole (12).

2. A plastic mold with an automatic gate removal according to claim 1, characterized in that: The limiting mechanism comprises a first electric push rod (601) and a limiting block (602); the first electric push rod (601) is installed on the side of the first mould (1) and the second mould (2); the limiting block (602) is connected to the telescopic rod of the first electric push rod (601); the limiting block (602) is used to limit the first mould (4) and the second mould (5).

3. A plastic mold with automatic gate removal according to claim 2, characterized in that: The translation mechanism comprises a motor (901) and a screw rod (902); the motor (901) is mounted on the guide rail frame (7); a screw rod (902) is rotatably arranged in the guide rail frame (7); an end of the screw rod (902) is connected to an output shaft of the motor (901); and a movable block (8) is threadedly connected to the screw rod (902).

4. A plastic mold with automatic gate removal according to claim 3, characterized in that: The air blowing mechanism comprises an air compressor (1401), a nozzle (1402) and an air pipe (1403); the air compressor (1401) and the nozzle (1402) are mounted on the side of the second mould (2); and the air outlet of the air compressor (1401) is connected to the nozzle (1402) via the air pipe (1403).

5. A plastic mold with automatic gate removal according to claim 4, characterized in that: A cooling mechanism is also included, the cooling mechanism comprising a water inlet pipe (15) and a water outlet pipe (16), the tops of the first mould (1) and the second mould (2) are both connected to the water inlet pipe (15), and the bottoms of the first mould (1) and the second mould (2) are both connected to the water outlet pipe (16).

6. A plastic mold with automatic gate removal according to claim 5, characterized in that: The invention also comprises a heating mechanism, which comprises a second electric push rod (17), a heat-conducting frame (18) and a heating module (19). The second electric push rod (17) is arranged on the inner side of the first mold (1) and the second mold (2). The heat-conducting frame (18) is slidably arranged on the inner side of the first mold (1) and the second mold (2). The heat-conducting frame (18) in the first mold (1) contacts the first mold plate (4), and the heat-conducting frame (18) in the second mold (2) contacts the second mold plate (5). The heat-conducting frame (18) is used to transfer heat to the first mold plate (4) and the second mold plate (5). The heat-conducting frame (18) is connected to the telescopic rod of the second electric push rod (17). The heating module (19) is installed on the inner side of the heat-conducting frame (18). The heating module (19) is used to heat the heat-conducting frame (18).

7. A plastic mold with an automatic gate removal according to claim 6, characterized in that: The invention also comprises a cleaning mechanism, which comprises an electric slide rail (20) and an electric cleaning brush (21). The electric slide rail (20) is mounted on the side of the second mold (2). The electric cleaning brush (21) is rotatably mounted on a slider of the electric slide rail (20). The electric cleaning brush (21) is used to clean foreign matter adhered to the surfaces of the first mold (4) and the second mold (5).

8. A plastic mold with an automatic gate removal according to claim 7, characterized in that: The invention also comprises a spraying mechanism, which comprises a water pump (22), a connecting pipe (23) and a nozzle (24). The water pump (22) and the connecting pipe (23) are arranged on the slider of the electric slide rail (20). The connecting pipe (23) is connected to the water outlet of the water pump (22). The nozzle (24) is connected to the connecting pipe (23) at intervals. The nozzle (24) is used to spray the release agent onto the surface of the first template (4) and the second template (5).

Images