An automatic demolding and taking device for injection molded parts of a packaging box

Abstract

The present application relates to injection molding automation auxiliary equipment field, specifically to a kind of automatic demolding and taking device of packaging box injection molding part, comprising: support assembly, for the installation and support of device whole, including base, support frame and top plate;Injection bottom die assembly, set in the inner top of base, including lower die plate and the side edge mould around the four edges of lower die plate.The present application relies on injection molding machine upper die lifting hydraulic cylinder to realize power supply, integrated multi-layer demolding, blowing auxiliary and the automatic taking device of ejecting demolding function, it is applicable to the efficient, non-destructive demolding and taking operation of packaging box injection molding part in screw cutter packaging production line, to solve the problem that the traditional demolding mode in prior art is mostly single ejecting mechanism, it is easy to cause demolding force concentration, and then cause injection molding part to appear top white, top mark, warping deformation and other defects, or introduce blowing auxiliary demolding or multi-layer demolding structure, but such scheme mostly needs additional configuration independent power source.

Description

Technical Field

[0001] This invention relates to the field of automated auxiliary equipment for injection molding, and specifically to an automated demolding and part removal device for injection molded packaging boxes. Background Technology

[0002] Injection molding is the core process for mass production of screw milling cutter packaging boxes. With its advantages of high efficiency, high precision, and strong batch consistency, it has become the preferred method for producing such packaging parts. It effectively meets the structural strength and dimensional accuracy requirements of screw milling cutter packaging, adapts to the storage and protection needs of screw milling cutters, reduces the overall cost of mass production, and improves production efficiency. As precision machining tools, screw milling cutters typically require packaging boxes with multi-layered cavities, limiting structures, or snap-fit ​​connections to achieve precise positioning and safe protection of the screw milling cutters. This results in a relatively complex injection-molded structure for the packaging boxes, making demolding significantly more difficult than for ordinary injection-molded parts.

[0003] Currently, there are still many problems to be solved in the demolding and removal process of injection molded parts for screw milling cutter packaging boxes. Traditional demolding methods mostly use a single ejection mechanism, which only uses ejector pins to apply mechanical force to forcibly eject the injection molded part from the mold core. Due to the multi-layered structure of the packaging box, this single ejection method is prone to concentrated demolding force, which can lead to defects such as whitening, ejection marks, and warping deformation in the injection molded part. This seriously affects the appearance quality and structural integrity of the packaging box and cannot meet the precision protection requirements of screw milling cutter packaging. At the same time, single ejection is difficult to overcome the clamping force and vacuum suction force between the injection molded part and the mold, which can easily lead to incomplete demolding and injection molded parts remaining in the mold cavity. This requires manual cleaning, which not only reduces production efficiency but also increases the labor intensity and the risk of damage to the injection molded parts.

[0004] To improve demolding performance, some existing technologies have introduced air-assisted demolding or multi-layer demolding structures. However, most of these solutions require additional independent power sources (such as high-pressure air pumps or dedicated ejection hydraulic cylinders) to drive the air-blowing and multi-layer demolding mechanisms. This not only increases the manufacturing cost and installation complexity of the equipment but also raises its energy consumption, which is inconsistent with the current trend of green energy saving, cost reduction, and efficiency improvement in the injection molding industry. Furthermore, existing demolding and part-removing devices are mostly general-purpose designs, not specifically adapted to the multi-layered structure of screw cutter packaging boxes. This makes it difficult to balance demolding efficiency and the integrity of the injection molded parts, failing to fully meet the automation and high-efficiency production requirements of screw cutter packaging production lines. This restricts the overall capacity increase and product quality stability of the screw cutter packaging production line.

[0005] Therefore, considering the structural characteristics of the injection molded parts for screw milling cutter packaging boxes, designing a device that integrates multi-layer demolding, air blowing assistance, and ejection functions without the need for an additional power source, and can achieve efficient, non-destructive, and automated demolding and part removal, has become a technical problem that urgently needs to be solved by those skilled in the art.

[0006] Therefore, it is necessary to invent an automated demolding and part removal device for injection molded packaging boxes to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide an automated demolding and part removal device for injection molded packaging boxes. Power is supplied by a hydraulic cylinder for lifting the upper mold of the injection molding machine. This automated part removal device integrates multi-layer demolding, air-assisted demolding, and ejection demolding functions. It is suitable for efficient and non-destructive demolding and part removal of injection molded packaging boxes in screw and milling cutter packaging production lines. This addresses the problem that existing demolding methods often use a single ejection mechanism, which easily leads to concentrated demolding force, resulting in defects such as whitening, ejection marks, and warping deformation in the injection molded parts. Alternatively, air-assisted demolding or multi-layer demolding structures are introduced, but these solutions often require an additional independent power source.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automated demolding and part removal device for injection-molded packaging boxes, comprising: Support components, used for the installation and support of the entire device, include a base, support frame and top plate; The injection molding bottom mold assembly is located at the inner top of the base and includes a lower mold plate and side molds surrounding the four sides of the lower mold plate. The side molds are used for demolding the injection molded parts. The injection molding top mold assembly is positioned above the injection molding bottom mold assembly and includes a lifting plate, the bottom of which is fixedly connected to an upper module; A flexible demolding assembly includes an air cylinder, which is fixedly installed on the top of a lifting plate via a connecting frame. A piston rod is slidably connected inside the air cylinder. A ventilation groove communicating with the lower part of the upper module is opened inside the connecting frame. A communication groove communicating with the ventilation groove is opened inside the lifting plate. An ejector assembly, disposed on the side of the piston rod, includes a compression rod that extends into the interior of the lifting plate, and an ejector block is disposed below the compression rod.

[0009] In a preferred embodiment of the present invention, a support frame is fixedly connected to the top of the base, a top plate is fixedly connected to the top of the support frame, a limiting groove is formed on the inner side of the support frame, an mounting plate is fixedly connected to the top of the base, the injection molding bottom mold assembly is mounted on the top of the mounting plate, a limiting rod is fixedly connected between the mounting plate and the top plate, and the injection molding top mold assembly is slidably connected to the limiting rod.

[0010] In a preferred embodiment of the present invention, a lower wedge block is fixedly connected to the outer side of the side mold, the lower wedge block is inclined, four side molds are provided, and all four side molds cooperate with the lower template. An upper wedge block is fixedly connected to the bottom of the lifting plate, and the upper wedge block cooperates with the lower wedge block.

[0011] As a preferred embodiment of the present invention, the injection molding bottom mold assembly further includes a base frame, a support plate is fixedly connected to the top of the base frame, an L-shaped frame is fixedly connected to the outer side of the support plate, a slide rod is fixedly connected to the inside of the L-shaped frame, a bottom plate is fixedly connected to the bottom of the side mold, a through hole is opened inside the bottom plate, the through hole is slidably connected to the slide rod, a demolding spring is sleeved on the outer side of the slide rod, and the demolding spring is disposed between the support plate and the bottom plate.

[0012] In a preferred embodiment of the present invention, a cylinder is installed on the top of the top plate, and a lifting rod is fixedly connected to the output end of the cylinder. The lifting rod passes through the top plate and is fixedly connected to the lifting plate. A limit block is fixedly connected to the side of the lifting plate, and the limit block is slidably connected to the limit groove.

[0013] In a preferred embodiment of the present invention, a piston block is slidably connected inside the air cylinder, the top of the piston block is fixedly connected to a piston rod, an elastic element is provided on the outer side of the piston rod, the piston rod extends to the outer side of the top of the air cylinder, a plurality of linkage frames are fixedly connected to the outer side of the piston rod, a hinge block is hinged to the end of the linkage frame, a fixed bracket is fixedly connected to the top of the air cylinder, the hinge block is hinged to the fixed bracket, a lifting frame is hinged to the other end of the hinge block, a movable plate is fixedly connected to the bottom of the lifting frame, a blocking rod extending to the bottom of the upper module is fixedly connected to the bottom of the movable plate, and elliptical grooves are provided at both ends of the hinge block.

[0014] As a preferred embodiment of the present invention, multiple blocking rods are provided, and the multiple blocking rods are respectively located at the bottom end of the upper module. The lifting plate and the upper module have through grooves that are slidably connected to the blocking rods, wherein the through grooves are connected to the connecting grooves.

[0015] As a preferred embodiment of the present invention, a plurality of fixing rods are fixedly connected to the outer side of the piston rod, and a pressing rod is fixedly connected to the end of the fixing rod. A sliding cavity that is slidably connected to the pressing rod is opened inside the upper module. A pressing cavity is opened inside the upper module below the sliding cavity. A limit frame is slidably connected inside the pressing cavity. An ejector block is fixedly connected to the bottom of the limit frame.

[0016] As a preferred embodiment of the present invention, a return spring is sleeved on the outer side of the limiting frame, and the return spring is disposed inside the extrusion chamber.

[0017] Compared with the prior art, the technical effects and advantages provided by the present invention in the above technical solution are as follows: Designed specifically for the characteristics of screw milling cutter packaging box injection molded parts, this method employs a multi-layer demolding, air-assisted demolding, and ejection-assisted demolding approach. This effectively disperses demolding stress and avoids the problem of concentrated demolding force caused by single ejection. It completely solves the defects such as whitening, ejection marks, and warping deformation that are prone to occur in injection molded parts in traditional demolding methods. Among them, the pneumatic flexible ejection can prevent damage caused by mechanical ejection, further ensuring the appearance integrity and structural precision of the packaging box injection molded parts, meeting the precision protection requirements of screw milling cutter packaging, significantly reducing the defect rate of injection molded parts, and improving product quality stability. This device eliminates the need for additional power sources such as high-pressure air pumps and dedicated ejection hydraulic cylinders in existing technologies. Instead, it directly utilizes the hydraulic cylinders of the injection molding machine's own upper mold lifting mechanism as the sole power source. This enables the synchronous driving of multi-layer demolding, air blowing assistance, and ejection actions. It not only simplifies the overall structure of the device and reduces the manufacturing cost, installation difficulty, and maintenance cost of the equipment, but also avoids the energy consumption caused by additional power sources. This aligns with the current development trend of green energy saving, cost reduction, and efficiency improvement in the injection molding industry. Long-term use can significantly reduce the energy consumption and operating costs of enterprises. With a high degree of automation, this device improves production efficiency and reduces labor intensity. It realizes fully automated demolding and part removal of injection molded parts for screw milling cutter packaging boxes. Through multi-layer demolding, the injection molded parts are gradually separated from the mold cavity. With the help of air blowing, the vacuum adsorption between the injection molded parts and the mold is broken, and the clamping force is reduced. Finally, the ejection mechanism completes the smooth removal of the injection molded parts. No manual intervention is required throughout the process. It effectively solves the problems of incomplete demolding and the need for manual cleaning in traditional demolding methods. It greatly improves demolding and part removal efficiency, shortens the injection molding production cycle, reduces the intensity of manual labor, and reduces the risk of damage to injection molded parts caused by manual operation. It helps the screw milling cutter packaging production line achieve large-scale, automated and efficient production. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the injection molding bottom mold assembly structure of the present invention; Figure 3 This is an exploded structural diagram of the injection molding bottom mold assembly of the present invention; Figure 4 This is a first-view structural schematic diagram of the injection molding top mold assembly of the present invention; Figure 5This is a second-view structural schematic diagram of the injection molding top mold assembly of the present invention; Figure 6 This is a schematic diagram of the flexible demolding component structure 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 flexible demolding component of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B.

[0020] Explanation of reference numerals in the attached figures: 001. Support assembly; 002. Injection mold bottom assembly; 003. Injection mold top assembly; 004. Flexible demolding assembly; 005. Ejection assembly; 101. Base; 102. Support frame; 103. Top plate; 104. Limiting groove; 105. Mounting plate; 106. Limiting rod; 201. Lower mold plate; 202. Side mold; 203. Lower wedge block; 204. Base plate; 205. Through hole; 206. Base frame; 207. Support plate; 208. L-shaped frame; 209. Slide bar; 210. Demolding spring; 301. Lifting plate; 302. Upper module; 303. Cylinder; 304. Lifting rod; 305. Upper wedge block; 306. Limit block; 401. Air pump; 402. Connecting frame; 403. Piston block; 404. Vent groove; 405. Connecting groove; 406. Piston rod; 407. Linkage frame; 408. Hinge block; 409. Fixed bracket; 410. Lifting frame; 411. Movable plate; 412. Blocking rod; 413. Elliptical groove; 501. Fixed rod; 502. Extrusion rod; 503. Sliding cavity; 504. Extrusion cavity; 505. Limiting frame; 506. Return spring; 507. Ejection block. Detailed Implementation

[0021] 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.

[0022] This invention provides, for example Figure 1-9 An automated demolding and part removal device for injection molded packaging boxes, as shown, includes: Support component 001 is used to install and support the entire device, including base 101, support frame 102 and top plate 103; Injection molding bottom mold assembly 002 is located on the inner top of base 101, including lower mold plate 201 and side molds 202 surrounding the four sides of lower mold plate 201. The side molds 202 are used to demold the injection molded parts. The injection mold top mold assembly 003 is located above the injection mold bottom mold assembly 002, and includes a lifting plate 301. The bottom of the lifting plate 301 is fixedly connected to the upper module 302. The flexible demolding assembly 004 includes an air cylinder 401, which is fixedly installed on the top of the lifting plate 301 via a connecting frame 402. A piston rod 406 is slidably connected inside the air cylinder 401. A ventilation groove 404 communicating with the lower part of the upper module 302 is opened inside the connecting frame 402. A communication groove 405 communicating with the ventilation groove 404 is opened inside the lifting plate 301. The ejector assembly 005 is located on the side of the piston rod 406 and includes a compression rod 502. The compression rod 502 extends into the interior of the lifting plate 301, and an ejector block 507 is provided below the compression rod 502.

[0023] When the injection bottom mold assembly 002 and the injection top mold assembly 003 are closed, the upper wedge block 305 presses the lower wedge block 203, thereby closing the side mold 202 and the lower template 201 to facilitate injection molding. The base frame 206 has an injection inlet located below the lower template 201. Injection inlet is existing technology and will not be described in detail here. After injection molding is completed, after the injection molded part cools and solidifies, the cylinder 303 is activated to drive the injection top mold assembly 003 to rise, thereby demolding.

[0024] As a further optimization of the present invention, a support frame 102 is fixedly connected to the top of the base 101, a top plate 103 is fixedly connected to the top of the support frame 102, a limiting groove 104 is opened on the inner side of the support frame 102, an installation plate 105 is fixedly connected to the top of the base 101, an injection molding bottom mold assembly 002 is installed on the top of the installation plate 105, a limiting rod 106 is fixedly connected between the installation plate 105 and the top plate 103, and the injection molding top mold assembly 003 is slidably connected to the limiting rod 106.

[0025] The side mold 202 is fixedly connected to a lower wedge block 203 on its outer side. The lower wedge block 203 is inclined. There are four side molds 202, and all four side molds 202 cooperate with the lower template 201. The bottom of the lifting plate 301 is fixedly connected to an upper wedge block 305, which cooperates with the lower wedge block 203. In the above structure, the injection molding bottom mold assembly 002 also includes a base frame 206. The top of the base frame 206 is fixedly connected to a support plate 207. The outside of the support plate 207 is fixedly connected to an L-shaped frame 208. The inside of the L-shaped frame 208 is fixedly connected to a slide rod 209. The bottom of the side mold 202 is fixedly connected to a bottom plate 204. The inside of the bottom plate 204 is provided with a through hole 205. The through hole 205 is slidably connected to the slide rod 209. A demolding spring 210 is sleeved on the outside of the slide rod 209. The demolding spring 210 is disposed between the support plate 207 and the bottom plate 204.

[0026] When the injection mold top mold assembly 003 approaches the injection mold bottom mold assembly 002, the upper wedge block 305 presses against the lower wedge block 203, causing the side mold 202 to close with the lower mold plate 201, thus facilitating injection molding. The side mold 202 slides inward, pressing against the demolding spring 210, causing the base plate 204 to slide outside the slide rod 209, thus providing a limiting position. When the injection molding is completed and the mold is opened, the injection mold top mold assembly 003 rises, and the upper wedge block 305 moves away from the lower wedge block 201. 3. Under the action of the demolding spring 210, the lifting rod 304 pushes the bottom plate 204 away from the support plate 207, thereby pushing the side mold 202 away from the lower template 201, which facilitates side demolding. Under the action of the L-shaped frame 208, the bottom plate 204 can be limited to prevent the side mold 202 from detaching. The bottom of the side mold 202 is provided with an isolation plate, which is located above the mounting plate 105 and can prevent external dust from entering the interior of the mounting plate 105.

[0027] Furthermore, a cylinder 303 is installed on the top of the top plate 103, and a lifting rod 304 is fixedly connected to the output end of the cylinder 303. The lifting rod 304 passes through the top plate 103 and is fixedly connected to the lifting plate 301. A limit block 306 is fixedly connected to the side of the lifting plate 301, and the limit block 306 is slidably connected to the limit groove 104.

[0028] When the cylinder 303 is activated, it drives the lifting plate 301 to rise and fall, causing the limiting block 306 on the side wall of the lifting plate 301 to slide inside the limiting groove 104, which facilitates limiting. In addition, the lifting plate 301 is slidably connected to the limiting rod 106, which allows the lifting plate 301 to slide smoothly. The bottom of the upper module 302 is provided with protrusions that cooperate with products such as screws and milling cutters, so that the inside of the packaging box has a groove for product storage, which facilitates the precise positioning and safety protection of screws and milling cutters.

[0029] In a further optimization of the above embodiment, a piston block 403 is slidably connected inside the air cylinder 401. The top of the piston block 403 is fixedly connected to the piston rod 406. An elastic element is provided on the outer side of the piston rod 406, which extends to the outer side of the top of the air cylinder 401. Multiple linkage frames 407 are fixedly connected to the outer side of the piston rod 406. A hinge block 408 is hinged to the end of the linkage frame 407. A fixed bracket 409 is fixedly connected to the top of the air cylinder 401. The hinge block 408 is hinged to the fixed bracket 409. The other end of 08 is hinged to a lifting frame 410, and the bottom of the lifting frame 410 is fixedly connected to a movable plate 411. The bottom of the movable plate 411 is fixedly connected to a blocking rod 412 extending to the bottom of the upper module 302. Multiple blocking rods 412 are provided, and the multiple blocking rods 412 are respectively located at the bottom of the upper module 302. The lifting plate 301 and the upper module 302 have through grooves that are slidably connected to the blocking rods 412. The through grooves are connected to the connecting grooves 405. Elliptical grooves 413 are provided at both ends of the hinge block 408.

[0030] As the lifting plate 301 gradually rises, the packaging box is first demolded from the bottom. Due to the complex shape of the upper module 302, the lifting plate 301 will carry the packaging box up. At this time, the user can insert the receiving tray into the lower part of the lifting plate 301. This is existing technology and is a common device for those skilled in the art, so it will not be described in detail here. When the lifting plate 301 gradually rises, the piston rod 406 contacts the top of the top plate 103. The piston rod 406 is pressed down inside the air cylinder 401, squeezing the elastic element. The piston rod 406 drives the linkage frame 407 to descend relative to the lifting plate 301. The descent of the linkage frame 407 drives the hinge block 408 to rotate. The hinge block 408 drives the lifting frame 410 to rise. Since the two ends of the hinge block 408 are provided with elliptical grooves 413, it is convenient to cooperate with the linkage frame 407 and the lifting frame 410, giving the hinge block 408 room to move and preventing interference.

[0031] In the initial state, to avoid the through groove affecting the injection molding shape, the through groove is blocked by the blocking rod 412 to prevent the injection molding liquid from entering the through groove and causing adhesion, resulting in injection molding defects. The rise of the lifting frame 410 drives the movable plate 411 to rise, thereby driving the blocking rod 412 to rise. After the blocking rod 412 rises inside the through groove, the opening connecting the empty groove and the connecting groove 405 is exposed. As the piston block 403 gradually descends, it can squeeze the air inside. The air enters the inside of the through groove through the ventilation groove 404 and the connecting groove 405, thereby injecting air into the upper mold. The air blowing assistance can break the vacuum adsorption between the injection molded part and the mold, reduce the clamping force, and the flexible demolding method can prevent defects such as ejection marks and warping deformation from the product, ensuring the appearance integrity and structural accuracy of the injection molded parts of the packaging box, meeting the requirements of the complex inner groove required for screw milling cutter packaging, greatly reducing the defect rate of injection molded parts, and improving the stability of product quality.

[0032] As a further optimization of the present invention, a plurality of fixing rods 501 are fixedly connected to the outer side of the piston rod 406, and a pressing rod 502 is fixedly connected to the end of the fixing rod 501. A sliding cavity 503 is provided inside the upper module 302, which is slidably connected to the pressing rod 502. A pressing cavity 504 is provided inside the upper module 302 below the sliding cavity 503. A limit frame 505 is slidably connected inside the pressing cavity 504, and an ejector block 507 is fixedly connected to the bottom of the limit frame 505. A return spring 506 is sleeved on the outer side of the limit frame 505, and the return spring 506 is disposed inside the pressing cavity 504.

[0033] During flexible demolding, the piston rod 406 drives the fixed rod 501 and the extrusion rod 502 to descend. The extrusion rod 502 gradually approaches the limiting frame 505, thereby extruding the limiting frame 505 and causing it to descend. The limiting frame 505 then extrudes the return spring 506, which in turn causes the ejector block 507 to descend and eject the product, preventing the product from sticking. The ejector block 507 is easily reset under the action of the return spring 506. The bottom of the extrusion rod 502 is initially a distance from the top of the limiting frame 505, so that ejection only occurs when the pneumatic flexible demolding is activated.

[0034] 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 automated demolding and part removal device for injection-molded packaging boxes, characterized in that: include: The support assembly (001) is used to install and support the entire device, including a base (101), a support frame (102), and a top plate (103). Injection molding bottom mold assembly (002) is disposed on the inner top of the base (101), including a lower mold plate (201) and side molds (202) surrounding the four sides of the lower mold plate (201), the side molds (202) being used for demolding the injection molded part; The injection top mold assembly (003) is located above the injection bottom mold assembly (002) and includes a lifting plate (301). The bottom of the lifting plate (301) is fixedly connected to the upper module (302). The flexible demolding assembly (004) includes an air cylinder (401), which is fixedly installed on the top of the lifting plate (301) via a connecting frame (402). A piston rod (406) is slidably connected inside the air cylinder (401). A ventilation groove (404) communicating with the lower part of the upper module (302) is opened inside the connecting frame (402). A communicating groove (405) communicating with the ventilation groove (404) is opened inside the lifting plate (301). The ejector assembly (005) is disposed on the side of the piston rod (406) and includes a pressing rod (502) that extends into the interior of the lifting plate (301), and an ejector block (507) is disposed below the pressing rod (502).

2. The automated demolding and part removal device for injection-molded packaging boxes according to claim 1, characterized in that: A support frame (102) is fixedly connected to the top of the base (101), and a top plate (103) is fixedly connected to the top of the support frame (102). A limiting groove (104) is opened on the inner side of the support frame (102). An installation plate (105) is fixedly connected to the top of the base (101). The injection molding bottom mold assembly (002) is installed on the top of the installation plate (105). A limiting rod (106) is fixedly connected between the installation plate (105) and the top plate (103). The injection molding top mold assembly (003) is slidably connected to the limiting rod (106).

3. The automated demolding and part removal device for injection-molded packaging boxes according to claim 1, characterized in that: A lower wedge block (203) is fixedly connected to the outer side of the side mold (202). The lower wedge block (203) is inclined. There are four side molds (202). All four side molds (202) cooperate with the lower template (201). An upper wedge block (305) is fixedly connected to the bottom of the lifting plate (301). The upper wedge block (305) cooperates with the lower wedge block (203).

4. The automated demolding and part removal device for injection-molded packaging boxes according to claim 3, characterized in that: The injection molding bottom mold assembly (002) also includes a base frame (206), a support plate (207) is fixedly connected to the top of the base frame (206), an L-shaped frame (208) is fixedly connected to the outside of the support plate (207), a slide rod (209) is fixedly connected to the inside of the L-shaped frame (208), a bottom plate (204) is fixedly connected to the bottom of the side mold (202), a through hole (205) is opened inside the bottom plate (204), the through hole (205) is slidably connected to the slide rod (209), a demolding spring (210) is sleeved on the outside of the slide rod (209), and the demolding spring (210) is disposed between the support plate (207) and the bottom plate (204).

5. An automated demolding and part removal device for injection-molded packaging boxes according to claim 1, characterized in that: A cylinder (303) is installed on the top of the top plate (103). A lifting rod (304) is fixedly connected to the output end of the cylinder (303). The lifting rod (304) passes through the top plate (103) and is fixedly connected to the lifting plate (301). A limit block (306) is fixedly connected to the side of the lifting plate (301). The limit block (306) is slidably connected to the limit groove (104).

6. An automated demolding and part removal device for injection-molded packaging boxes according to claim 1, characterized in that: A piston block (403) is slidably connected inside the air cylinder (401). The top of the piston block (403) is fixedly connected to a piston rod (406). An elastic element is provided on the outer side of the piston rod (406). The piston rod (406) extends to the top outer side of the air cylinder (401). Multiple linkage frames (407) are fixedly connected to the outer side of the piston rod (406). A hinge block (408) is hinged to the end of each linkage frame (407). The top of the hinge block (408) is fixedly connected to a fixed bracket (409), and the hinge block (408) is hinged to the fixed bracket (409). The other end of the hinge block (408) is hinged to a lifting frame (410). The bottom of the lifting frame (410) is fixedly connected to a movable plate (411). The bottom of the movable plate (411) is fixedly connected to a blocking rod (412) extending to the bottom of the upper module (302). Elliptical grooves (413) are provided at both ends of the hinge block (408).

7. An automated demolding and part removal device for injection-molded packaging boxes according to claim 6, characterized in that: Multiple blocking rods (412) are provided, and the multiple blocking rods (412) are respectively located at the bottom end of the upper module (302). The lifting plate (301) and the upper module (302) have through grooves that are slidably connected to the blocking rods (412), wherein the through grooves are connected to the connecting grooves (405).

8. An automated demolding and part removal device for injection-molded packaging boxes according to claim 1, characterized in that: Multiple fixing rods (501) are fixedly connected to the outside of the piston rod (406). A pressing rod (502) is fixedly connected to the end of the fixing rod (501). A sliding cavity (503) that is slidably connected to the pressing rod (502) is opened inside the upper module (302). A pressing cavity (504) is opened inside the upper module (302) below the sliding cavity (503). A limit frame (505) is slidably connected inside the pressing cavity (504). An ejector block (507) is fixedly connected to the bottom of the limit frame (505).

9. An automated demolding and part removal device for injection molded packaging boxes according to claim 8, characterized in that: A return spring (506) is sleeved on the outside of the limiting frame (505), and the return spring (506) is disposed inside the extrusion chamber (504).

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