An immersion cooling type plastic packaging box molding die

Abstract

This invention relates to an immersion-cooled plastic packaging box molding die, comprising: a molding power assembly; the molding power assembly includes an inverted bracket, and a protrusion is provided on the inner side of the upper inner mold. The inverted bracket is located on the left side of an injection extruder, and an upper outer mold is provided at the output end of the injection extruder. Through the cooperation of the upper molding module and the upper power assembly, the product is ejected under the push of the ejector block. Combined with the push of water, flexible demolding is possible. The cooperation of the lower molding module and the ejector allows cooling water to contact the product, which not only cools the product but also ejects it. This solves the problems in existing injection molding devices for packaging boxes, where cooling pipes are mostly used to circulate water in cold tanks or pipelines. The cooling water has poor fluidity, easily forming localized heat accumulation, resulting in slow cooling speed. Furthermore, the demolding process can easily cause the product to stick to the mold, and forced demolding can easily cause deformation of the packaging box.

Description

Technical Field

[0001] This invention relates to the field of molding dies, and more specifically to an immersion cooling type plastic packaging box molding die. Background Technology

[0002] Plastic packaging boxes are widely used in the food and daily chemical industries due to their advantages such as low density, ease of processing, and low cost. The core of their production lies in the molding mold. However, with the upgrading of consumption, the market is placing higher demands on the personalized design and efficient production (shorter cycle time and lower energy consumption) of packaging boxes. Traditional mold technology struggles to balance efficiency and quality, necessitating innovation in cooling and demolding mechanisms. Existing technologies suffer from the following problems.

[0003] In existing injection molding equipment for packaging boxes, most of them use cooling pipes to pass water through cold tanks or pipes. The cooling water has poor fluidity, which easily leads to local heat accumulation, slow cooling speed, and the demolding process can easily cause the product to stick to the mold. Forced demolding can easily cause the packaging box to deform.

[0004] Therefore, it is necessary to invent an immersion cooling type plastic packaging box molding die to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an immersion-cooled plastic packaging box molding die. Through the cooperation of the upper molding module and the upper power unit, the product is ejected under the push of the ejector block. Combined with the push of water, flexible demolding is possible. The cooperation of the lower molding module and the ejector allows the cooling water to contact the product, which can not only cool the product but also eject it. This solves the problems in the existing injection molding devices for packaging boxes, where most use cooling pipes to pass water through cold tanks or pipelines. The cooling water has poor fluidity, is prone to local heat accumulation, has a slow cooling speed, and the demolding process can easily cause the product to stick to the mold. Forced demolding can also cause the packaging box to deform.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an immersion cooling type plastic packaging box forming mold, comprising: A molding power assembly; the molding power assembly includes a C-shaped bracket, a protrusion is provided on the inner side of the upper inner mold, the C-shaped bracket is located on the left side of the injection extruder, an upper outer mold is provided at the output end of the injection extruder, a hydraulic cylinder is installed on the left side of the C-shaped bracket, a lower outer mold is provided at the output end of the hydraulic cylinder, and a limit rod is fixed at each of the four internal corners of the C-shaped bracket, the limit rod penetrating through the upper outer mold and the lower outer mold; The upper forming module is installed inside the upper outer mold by screws; the upper forming module includes an upper inner mold, and a cooling water chamber and an extrusion water chamber are provided between the upper outer mold and the upper inner mold. An ejector block is slidably connected inside the upper inner mold, and a closing valve is provided inside the ejector block. The upper power unit is located inside the C-shaped support; the upper power unit includes a fixed connecting rod, the inner side of which is fixedly connected to a limiting rod two, and the outer side of the limiting rod two is slidably connected to a movable block; the output end of the injection extruder is provided with a feeding pipe, the outer side of which is installed with a fixed sleeve, and the injection head at the end of the feeding pipe is adapted to the inner cavity of the ejector block; The lower forming module includes a lower inner mold, the inner side of which is provided with a groove that mates with a protrusion. The lower inner mold is installed inside the lower outer mold by screws. The lower inner mold has a water channel inside, which includes a water inlet and a water storage tank. A fixed column is slidably connected inside the lower outer mold and the lower inner mold. A second piston is fixedly connected to the end of the fixed column. A first rack is fixedly connected to the end of the second piston. A gear that is rotatably connected to the lower inner mold is meshed on the side of the first rack. A second rack is meshed on the side of the gear. A block is fixedly connected to the end of the second rack.

[0007] As a preferred embodiment of the present invention, the shape of the C-shaped bracket is set as C-shaped, a sealing ring is provided between the upper inner mold and the upper outer mold, the outer end of the ejector block extends through the upper outer mold to the outer side of the upper outer mold, a side lug is fixedly connected to the outer end of the ejector block, a first piston is fixedly connected to the outer side of the ejector block, the first piston is located inside the squeezing water chamber, a spring is sleeved on the outer side of the ejector block, and the two ends of the spring are respectively attached to the first piston and the upper inner mold.

[0008] In a preferred embodiment of the present invention, four fixed connecting rods are provided, and the four fixed connecting rods are arranged in a ring array around the feed pipe. The fixed sleeve is fixedly connected to the feed pipe. The outer side of the fixed sleeve is inclined. The movable block is provided with an inclined block adapted to the fixed sleeve at one end near the injection extruder, and a pushing block is provided at the other end of the movable block.

[0009] As a preferred embodiment of the present invention, a protective cylinder is fixedly connected to the inner side of the C-shaped bracket near the injection extruder. The protective cylinder covers the fixed connecting rod, and a limiting groove is formed on the inner side of the protective cylinder. The side lug is adapted to the pushing block and is slidably connected to the limiting groove.

[0010] In a preferred embodiment of the present invention, the closing valve includes four movable grooves arranged in a ring inside the ejector block. A sealing block is slidably connected inside each movable groove. Four sealing blocks are also provided, with the sealing blocks inclined on the side closest to the first piston. A limiting cavity is provided inside the ejector block within the movable groove. Limiting strips are fixedly connected to both sides of each sealing block, and the limiting strips are adapted to the limiting cavity. A first elastic element is provided between the limiting strip and the inner wall of the movable groove. The four sealing blocks cooperate with each other. A channel is provided inside the ejector block, and a cooling water chamber communicates with the movable groove through the channel.

[0011] As a preferred embodiment of the present invention, the water channel provided inside the lower inner mold further includes a water inlet pipe, which is connected to a water inlet tank. The end of the water inlet tank is connected to a plurality of cooling pipes, which are connected to a confluence pipe through a return pipe. The bottom of the confluence pipe is connected to a water outlet pipe.

[0012] In a preferred embodiment of the present invention, the blocking block and the second piston are both in contact with the inner wall of the water inlet tank, and the two sides of the blocking block are fixedly connected with support strips. The lower inner mold has a sliding groove inside, and the support strips are adapted to the sliding groove.

[0013] As a preferred embodiment of the present invention, the ejector includes four ejector pins, which are arranged in a circular array around the lower inner mold. The ejector pins penetrate the interior of the lower inner mold and the lower outer mold. A top block is fixedly connected to one end of the ejector pin near the lower inner mold, and a stop block is fixedly connected to the outside of the ejector pin. A second elastic element is sleeved on the outside of the ejector pin, and the two ends of the second elastic element are respectively attached to the stop block and the lower outer mold.

[0014] As a preferred embodiment of the present invention, the lower inner mold is provided with a slot inside, and the lower outer mold is provided with a connecting groove that matches the slot inside.

[0015] Compared with the prior art, the technical effects and advantages provided by the present invention in the above technical solution are as follows: Through the cooperation of the upper molding module and the upper power unit, the upper mold is demolded. When the fixed sleeve on the outside of the injection head contacts the inclined block, it pushes the movable block to slide outward on the outside of the limit rod two. The limit rod two is fitted with a spring on the outside to drive the movable block to reset. When the movable block slides outward, the push block also slides outward, thereby squeezing the side ear and driving the side ear to drive the ejector block to slide inward. The side ear slides inside the limit groove, which facilitates the limiting of the side ear. At the same time, the protective cylinder can protect the part. When the ejector block slides inward, the first piston squeezes the cooling water inside the squeezing water chamber, so that the cooling water enters the interior of the movable groove through the channel and enters the interior of the injection cavity through the water channel under high pressure. At this time, the ejector block also slides inward into the injection cavity. At the same time, the hydraulic cylinder drives the lower outer mold away from the upper outer mold. The product is ejected under the push of the ejector block. Combined with the push of the water, flexible demolding can be achieved, and the cooling water directly contacts the product, which speeds up the cooling time. 2. By cooperating with the lower forming module and the ejector, the lower mold is demolded. The water inlet valve is closed, and then the hydraulic cylinder is activated. The hydraulic cylinder drives the lower outer mold to retract away from the upper forming module. At this time, the fixed column remains stationary, and the lower inner mold drives the gear and the blocking block to move. The gear rotates under the action of the first rack, and the rotation of the gear will drive the second rack to move relative to the gear. The second rack drives the blocking block and the support strip to slide inside the lower inner mold. At this time, the support strip slides inside the slide groove, which facilitates the limiting. The blocking block will gradually move away from the cooling pipe, so that the cooling pipe is exposed at one end facing the blocking block. At this time, the second piston gradually slides inside the water inlet groove, which can squeeze out the cooling water inside the water inlet groove, so that the cooling water contacts the product. This can not only cool the product, but also eject the product. When the ejector pin contacts the C-shaped support, the ejector pin does not move, and the lower outer mold moves, which can make the ejector pin extend out of the slot and eject the material, thereby completing the material ejection design of the packaging box. The second elastic element can make the ejector pin automatically reset. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the upper outer mold and the upper forming module of the present invention; Figure 3 This is a schematic diagram of the connection structure between the I-shaped bracket and the upper power unit of the present invention; Figure 4This is a schematic diagram of the overall structure of the upper power unit of the present invention; Figure 5 This is a schematic cross-sectional view of the upper forming module of the present invention; Figure 6 This is an exploded structural diagram of the upper power unit and the upper outer mold of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic cross-sectional view of the upper forming module of the present invention; Figure 9 This is a schematic diagram showing the detailed structure of the closed block of the present invention; Figure 10 This is a first-view structural diagram of the connection between the lower outer mold and the lower forming module of the present invention; Figure 11 This is a second-view structural diagram of the connection between the lower outer mold and the lower forming module of the present invention; Figure 12 This is an exploded view of the lower molding module of the present invention; Figure 13 This is a three-dimensional structural diagram of the lower molding module of the present invention; Figure 14 This is a schematic cross-sectional view of the lower molding module of the present invention; Figure 15 This is a schematic diagram of the connection structure between the water storage tank and the second piston of the present invention; Figure 16 This is a schematic diagram of the internal water channel structure of the lower inner mold of the present invention; Figure 17 This is a schematic diagram of the internal water channel structure of the lower inner mold of the present invention.

[0018] Explanation of reference numerals in the attached figures: 001. Molding power assembly; 002. Upper molding module; 003. Upper power assembly; 004. Closing valve; 005. Lower molding module; 006. Ejector component; 101. C-shaped support; 102. Injection extruder; 103. Upper outer mold; 104. Hydraulic cylinder; 105. Lower outer mold; 106. Limiting rod one; 201. Upper inner mold; 202. Protrusion; 203. Cooling water cavity; 204. Extrusion water cavity; 205. Sealing ring; 206. Ejector block; 207. Side lug; 208. First piston; 301. Conveying pipe; 302. Injection head; 303. Fixing sleeve; 304. Fixing connecting rod; 305. Limiting rod two; 306. Movable block; 307. Inclined block; 308. Pushing block; 309. Protective cylinder; 310. Limiting groove; 401. Movable groove; 402. Enclosing block; 403. Limiting strip; 404. First elastic element; 405. Water passage groove; 501. Lower inner mold; 502. Groove; 503. Water inlet pipe; 504. Water inlet trough; 505. Water storage trough; 506. Cooling pipe; 507. Return pipe; 508. Merging pipe; 509. Water outlet pipe; 510. Fixed column; 511. Second piston; 512. First rack; 513. Gear; 514. Second rack; 515. Block; 516. Support strip; 517. Slide groove; 601. Ejector pin; 602. Ejector block; 603. Second elastic element; 604. Stop block; 701, enter the management; 702, exit the management. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] This invention provides, for example Figure 1-17 The immersion cooling type plastic packaging box molding die shown includes: a molding power assembly 001, including an inverted bracket 101. The inverted bracket 101 is in the shape of an inverted bracket. A protrusion 202 is provided on the inner side of the upper inner mold 201. The inverted bracket 101 is located on the left side of the injection extruder 102. The injection extruder 102 is used to perform injection extrusion on the device. This is prior art and will not be described in detail here. An upper outer mold 103 is provided at the output end of the injection extruder 102. A hydraulic cylinder 104 is installed on the left side of the inverted bracket 101. A lower outer mold 105 is provided at the output end of the hydraulic cylinder 104. Limiting rods 106 are fixed at the four internal corners of the inverted bracket 101. The limiting rods 106 penetrate the upper outer mold 103 and the lower outer mold 105. As a further optimization of the present invention, the upper molding module 002 is installed inside the upper outer mold 103 by screws, including an upper inner mold 201. A cooling water cavity 203 and an extrusion water cavity 204 are provided between the upper outer mold 103 and the upper inner mold 201. A water inlet pipe is connected above the cooling water cavity 203, and a water outlet pipe is connected below the cooling water cavity 203. An ejector block 206 is slidably connected inside the upper inner mold 201. A closing valve 004 is provided inside the ejector block 206. The closing valve 004 is used to close the inlet of the upper inner mold 201 to prevent the product of the packaging box from sticking to the injection molding material. A sealing ring 205 is provided between the upper inner mold 201 and the upper outer mold 103 to seal the internal cooling water cavity 203 and prevent cooling water leakage. The outer end of the ejector block 206 extends through the upper outer mold 103 to the outside of the upper outer mold 103. A side lug 207 is fixedly connected to the outer end of the ejector block 206. A first piston 208 is fixedly connected to the outside of the ejector block 206. The first piston 208 is located inside the squeezing water cavity 204. A spring is sleeved on the outside of the ejector block 206. The two ends of the spring are respectively attached to the first piston 208 and the upper inner mold 201. Under the action of the spring, it is easy to drive the ejector block 206 to reset.

[0021] The upper power unit 003 is located inside the U-shaped bracket 101 and includes a fixed connecting rod 304. A limiting rod 305 is fixedly connected to the inner side of the fixed connecting rod 304. A material conveying pipe 301 is provided at the output end of the injection extruder 102. A fixing sleeve 303 is installed on the outer side of the material conveying pipe 301. The injection head 302 at the end of the material conveying pipe 301 is adapted to the inner cavity of the ejector block 206. Four fixed connecting rods 304 are provided, arranged in a circular array around the material conveying pipe 301. A movable block 306 is slidably connected to the outer side of the limiting rod 305. The fixing sleeve 304... 3. It is fixedly connected to the feed pipe 301. The fixed sleeve 303 is inclined on the outside. The movable block 306 is provided with an inclined block 307 that is adapted to the fixed sleeve 303 at one end near the injection extruder 102. The other end of the movable block 306 is provided with a push block 308. In the above structure, the inner side of the C-shaped bracket 101 is fixedly connected to the side near the injection extruder 102 with a protective cylinder 309. The protective cylinder 309 wraps around the fixed connecting rod 304. The inner side of the protective cylinder 309 is provided with a limiting groove 310. The side ear 207 is adapted to the push block 308 and is slidably connected to the limiting groove 310.

[0022] Before injection molding, the cooling water inlet valve is closed. When injection molding is required, the upper power unit 003 is pushed to the side of the upper molding module 002, so that the injection head 302 enters the interior of the ejector block 206. At this time, the injection head 302 cooperates with the upper inner mold 201, and then injection molding is performed. After injection molding is completed, the cooling water valve is opened, and then the injection head 302 is driven away from the ejector block 206. After cooling is completed, the water valve is closed. When the injection head 302 moves away from the closing valve 004, the closing valve 004 automatically closes to prevent sticking. At this time, the water channel 405 located inside the closing valve 004 is exposed. To further facilitate flexible material ejection, when the fixed sleeve 303 on the outer side of the injection head 302 contacts the inclined block 307, it pushes the movable block 306 to slide outward outside the limit rod 305. A spring is fitted on the outer side of the limit rod 305 to reset the movable block 306. When the movable block 306 slides outward, the pushing block 308 also slides outward, thereby squeezing the side ear 207. This causes the side ear 207 to move the ejector block 206 inward. The side ear 207 slides inside the limiting groove 310, which facilitates the limiting of the side ear 207. Simultaneously, the protective cylinder 3... 09 can protect the parts. When the ejector block 206 slides inward, the first piston 208 squeezes the cooling water inside the extrusion water chamber 204, so that the cooling water enters the interior of the movable groove 401 through the channel, and enters the interior of the injection cavity through the water channel 405 under high pressure. At this time, the ejector block 206 also slides into the injection cavity. At the same time, the hydraulic cylinder 104 drives the lower outer mold 105 away from the upper outer mold 103. The product is ejected under the push of the ejector block 206. Combined with the push of water, flexible demolding can be performed, and the cooling water is in direct contact with the product, which speeds up the cooling time.

[0023] The closing valve 004 includes four movable grooves 401 arranged in a ring inside the ejector block 206. Four sealing blocks 402 are slidably connected inside the movable grooves 401, with the sealing blocks 402 inclined on the side closest to the first piston 208. A limiting cavity is provided inside the ejector block 206 within the movable grooves 401. Limiting strips 403 are fixedly connected to both sides of the sealing blocks 402, and the limiting strips 403 are adapted to the limiting cavities. A first elastic element 404 is provided between the limiting strips 403 and the inner wall of the movable grooves 401. The four sealing blocks 402 cooperate with each other. A channel is provided inside the ejector block 206, through which the cooling water chamber 203 communicates with the movable grooves 401.

[0024] When the sealing block 402 is compressed, it contracts into the movable groove 401, compressing the first elastic element 404. The limiting strip 403 slides in the limiting cavity inside the movable groove 401 for easy positioning. At this time, the water channel 405 is blocked, and the movable groove 401 is blocked by the injection head 302, so the internal cooling water will not leak out. The setting of the closing valve 004 can not only prevent adhesion but also allow the cooling water to push the flexible part out, greatly improving the cooling effect and facilitating the protection of the product.

[0025] Furthermore, the lower molding module 005 includes a lower inner mold 501, which is installed inside the lower outer mold 105 by screws. The lower inner mold 501 is provided with a water channel, which includes a water inlet trough 504 and a water storage trough 505. A fixing post 510 is slidably connected inside the lower outer mold 105 and the lower inner mold 501. A second piston 511 is fixedly connected to the end of the fixing post 510. A first rack 512 is fixedly connected to the end of the second piston 511. A gear 513 is rotatably connected to the side of the first rack 512 and is engaged with the side of the gear 513. A second rack 514 is engaged with the side of the gear 513. A block 515 is fixedly connected to the end of the second rack 514. When cooling the lower inner mold 501, cooling water is injected into the water inlet tank 504 through the water inlet pipe 503, and then transported from the water inlet tank 504 to the interior of each cooling pipe 506. It is then fed into the manifold 508 through the return pipe 507, thereby completing the cooling of the material. The cooling water is output through the water outlet pipe 509 inside the manifold 508, completing the cooling cycle.

[0026] The inner side of the lower inner mold 501 is provided with a groove 502 that mates with the protrusion 202. The water channel inside the lower inner mold 501 also includes a water inlet pipe 503, which is connected to a water inlet trough 504. The end of the water inlet trough 504 is connected to multiple cooling pipes 506, which are connected to a manifold pipe 508 via a return pipe 507. The bottom of the manifold pipe 508 is connected to a water outlet pipe 509. The plug 515 and the second piston 511 are both in contact with the inner wall of the water inlet trough 504. Both sides of 15 are fixedly connected with support strips 516. The interior of the lower inner mold 501 is provided with a sliding groove 517, and the support strips 516 are adapted to the sliding groove 517. The interior of the lower inner mold 501 is provided with a slot, and the interior of the lower outer mold 105 is provided with a connecting groove adapted to the slot. The ejector pin 601 passes through the slot and the connecting groove. The bottom of the lower outer mold 105 is connected with an inlet pipe 701 and an outlet pipe 702, which are respectively connected to the water inlet pipe 503 and the water outlet pipe 509.

[0027] After injection molding, cooling is performed. Once cooling is complete, the water inlet valve is closed, and then the hydraulic cylinder 104 is activated. The hydraulic cylinder 104 drives the lower outer mold 105 to retract, moving away from the upper molding module 002. At this time, the fixed column 510 remains stationary, and the lower inner mold 501 drives the gear 513 and the block 515 to move. The gear 513 rotates under the action of the first rack 512. The rotation of the gear 513 will drive the second rack 514 to move relative to the gear 513. The second rack 514 drives the block 515 and the support bar 516 to slide inside the lower inner mold 501. At this time, the support bar 516 slides inside the slide groove 517 for easy positioning. The block 515 will gradually move away from the cooling pipe 506, exposing one end of the cooling pipe 506 facing the block 515. At this time, the second piston 511 gradually slides inside the water inlet groove 504, which can squeeze out the cooling water inside the water inlet groove 504, allowing the cooling water to contact the product. This not only cools the product but also ejects it. In a further optimization of the above embodiment, the ejector 006 includes four ejector pins 601, which are arranged in a circular array around the lower inner mold 501. The ejector pins 601 penetrate the interior of the lower inner mold 501 and the lower outer mold 105. An ejector block 602 is fixedly connected to one end of the ejector pin 601 near the lower inner mold 501. A stop block 604 is fixedly connected to the outside of the ejector pin 601. A second elastic member 603 is sleeved on the outside of the ejector pin 601. The two ends of the second elastic member 603 are respectively attached to the stop block 604 and the lower outer mold 105.

[0028] When the ejector pin 601 contacts the C-shaped bracket 101, the ejector pin 601 remains stationary while the lower outer mold 105 moves, allowing the ejector pin 601 to extend out of the slot and eject the material, thus completing the material ejection design for the packaging box. The second elastic element 603 can cause the ejector pin 601 to automatically reset.

[0029] The cooling water inside the upper forming module 002 and the lower forming module 005 is controlled by an external water pump, which can circulate and cool the water and automatically replenish the water. The water that has flowed out can be recycled, filtered and reused. This is existing technology and will not be described in detail here.

[0030] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An immersion cooling type plastic packaging box forming mold, characterized in that: include: Molding power assembly (001); The molding power assembly (001) includes an inverted bracket (101), the inverted bracket (101) is located on the left side of the injection extruder (102), the output end of the injection extruder (102) is provided with an upper outer mold (103), a hydraulic cylinder (104) is installed on the left side of the inverted bracket (101), the output end of the hydraulic cylinder (104) is provided with a lower outer mold (105), and a limit rod (106) is fixed at each of the four internal corners of the inverted bracket (101), the limit rod (106) passes through the upper outer mold (103) and the lower outer mold (105); The upper forming module (002) is installed inside the upper outer mold (103) by screws; the upper forming module (002) includes an upper inner mold (201), a cooling water chamber (203) and an extrusion water chamber (204) are provided between the upper outer mold (103) and the upper inner mold (201), an ejector block (206) is slidably connected inside the upper inner mold (201), and a closing valve (004) is provided inside the ejector block (206); The upper power unit (003) is located inside the C-shaped support (101); the upper power unit (003) includes a fixed connecting rod (304), the inner side of the fixed connecting rod (304) is fixedly connected to a limiting rod (305), the outer side of the limiting rod (305) is slidably connected to a movable block (306), the output end of the injection extruder (102) is provided with a feeding pipe (301), the outer side of the feeding pipe (301) is installed with a fixed sleeve (303), and the injection head (302) at the end of the feeding pipe (301) is adapted to the inner cavity of the ejector block (206); The lower molding module (005) includes a lower inner mold (501). The shape of the C-shaped bracket (101) is C-shaped. The inner side of the upper inner mold (201) is provided with a protrusion (202). A sealing ring (205) is provided between the upper inner mold (201) and the upper outer mold (103). The outer end of the ejector block (206) extends through the upper outer mold (103) to the outer side of the upper outer mold (103). The outer end of the ejector block (206) is fixedly connected with a side ear (207). The outer side of the ejector block (206) is fixedly connected with a first piston (208). The first piston (208) is located inside the squeezing water chamber (204). A spring is sleeved on the outer side of the ejector block (206). The two ends of the spring are respectively attached to the first piston (208) and the upper inner mold (201).

2. The immersion cooling type plastic packaging box forming mold according to claim 1, characterized in that: Four fixed connecting rods (304) are provided, and the four fixed connecting rods (304) are arranged in a ring array around the feed pipe (301). The fixed sleeve (303) is fixedly connected to the feed pipe (301). The fixed sleeve (303) is inclined on the outside. The movable block (306) is provided with an inclined block (307) that matches the fixed sleeve (303) at one end near the injection extruder (102). The other end of the movable block (306) is provided with a pushing block (308).

3. The immersion cooling type plastic packaging box forming mold according to claim 2, characterized in that: A protective cylinder (309) is fixedly connected to the inner side of the C-shaped bracket (101) near the injection extruder (102). The protective cylinder (309) wraps around the fixed connecting rod (304). A limiting groove (310) is opened on the inner side of the protective cylinder (309). The side ear (207) is adapted to the push block (308) and is slidably connected to the limiting groove (310).

4. The immersion cooling type plastic packaging box forming mold according to claim 1, characterized in that: The closing valve (004) includes four movable grooves (401) arranged in a ring inside the ejector block (206). A closing block (402) is slidably connected inside the movable groove (401). There are four closing blocks (402), and the closing blocks (402) are inclined on the side near the first piston (208). A limiting cavity is provided inside the movable groove (401). A limiting strip (403) is fixedly connected to both sides of the closing block (402). The limiting strip (403) is adapted to the limiting cavity. A first elastic element (404) is provided between the limiting strip (403) and the inner wall of the movable groove (401). The four closing blocks (402) cooperate with each other. A channel is provided inside the ejector block (206). The cooling water chamber (203) is connected to the movable groove (401) through the channel.

5. The immersion cooling type plastic packaging box forming mold according to claim 1, characterized in that: The lower inner mold (501) is installed inside the lower outer mold (105) by screws. The lower inner mold (501) is provided with a water channel, which includes a water inlet tank (504) and a water storage tank (505). The lower outer mold (105) and the lower inner mold (501) are slidably connected by a fixed column (510). The end of the fixed column (510) is fixedly connected to a second piston (511). The end of the second piston (511) is fixedly connected to a first rack (512). The side of the first rack (512) is meshed with a gear (513) that is rotatably connected to the lower inner mold (501). The side of the gear (513) is meshed with a second rack (514). The end of the second rack (514) is fixedly connected to a block (515).

6. The immersion cooling type plastic packaging box forming mold according to claim 5, characterized in that: The water channel inside the lower inner mold (501) also includes a water inlet pipe (503). The inner side of the lower inner mold (501) is provided with a groove (502) that cooperates with the protrusion (202). The water inlet pipe (503) is connected to the water inlet groove (504). The end of the water inlet groove (504) is connected to a plurality of cooling pipes (506). The cooling pipes (506) are connected to the manifold pipe (508) through the return pipe (507). The bottom of the manifold pipe (508) is connected to the water outlet pipe (509).

7. The immersion cooling type plastic packaging box forming mold according to claim 6, characterized in that: The block (515) and the second piston (511) are both in contact with the inner wall of the water inlet (504). The block (515) is fixedly connected with a support strip (516) on both sides. The lower inner mold (501) has a sliding groove (517) inside. The support strip (516) is adapted to the sliding groove (517).

8. The immersion cooling type plastic packaging box forming mold according to claim 1, characterized in that: It also includes an ejector (006), which includes four ejector pins (601). The four ejector pins (601) are arranged in a ring array around the lower inner mold (501). The ejector pins (601) penetrate the interior of the lower inner mold (501) and the lower outer mold (105). An ejector block (602) is fixedly connected to one end of the ejector pin (601) near the lower inner mold (501). A stop block (604) is fixedly connected to the outside of the ejector pin (601). A second elastic element (603) is sleeved on the outside of the ejector pin (601). The two ends of the second elastic element (603) are respectively attached to the stop block (604) and the lower outer mold (105). A slot is provided inside the lower inner mold (501). A connecting groove that matches the slot is provided inside the lower outer mold (105).

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