Defoaming and exhausting mechanism of injection mold

Abstract

The defoaming and exhausting mechanism comprises a base, a forming mold and an exhausting hole, a shell sleeve and an output pipe which are coaxially distributed are fixedly arranged on the inner side of the base, a filter element is installed in the output pipe, and the shell sleeve is filled with cooling liquid; a plug disc is connected into the air storage chamber in a sliding mode, a pressing structure is arranged in the air storage chamber, a driving piece is arranged on the disc-shaped frame, a guide piece is arranged on the disc-shaped frame, and a stirring structure is arranged on the bending frame. According to the continuous injection molding device, firstly, the gas storage chambers can make movable contact with cooling liquid at different positions, the filter element filters gas cooled to the normal temperature, the gas filtering effect is improved, secondly, through rotating switching of the multiple gas storage chambers, continuous injection molding of batched injection molding parts through the injection mold is achieved, and the production efficiency is improved. And on the premise that gas generated by injection molding is continuously and effectively sucked, the injection molding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mold processing, in particular to a defoaming and exhausting mechanism of an injection mold. Background Art

[0002] An injection mold is a tool used in the production of plastic products. It injects molten plastic into the mold cavity through an injection molding machine, and after cooling and solidification, it forms a plastic product of the desired shape and size.

[0003] It is very important to remove bubbles and exhaust during the mold injection process, which directly affects the quality and appearance of the product. If the air inside the mold is not effectively exhausted, the molten plastic will mix with the air when filling the cavity under high pressure, resulting in local overheating, which will cause the plastic to burn and carbonize, affecting the appearance and performance of the product.

[0004] The exhaust gas during the mold injection molding process not only includes the air in the mold cavity, but also includes water vapor evaporated from the plastic material, volatile gases decomposed from the liquid plastic, reaction gases and volatile gases of auxiliary additives in the plastic, etc. These exhaust gases have a pungent odor and are slightly toxic, which are very harmful to human health. Therefore, it is necessary to filter the exhausted gas through a filtering mechanism. In the prior art, activated carbon is usually used to filter the exhaust gas generated during mold injection molding. When the high-temperature exhaust gas is discharged from the exhaust hole, it directly passes through the filtering mechanism and is filtered by the activated carbon. The high temperature environment will reduce the adsorption capacity of the activated carbon for volatile organic compounds, which is not conducive to the effective filtration of the smoke generated during mold injection molding.

[0005] In view of the above-mentioned defects, a degassing and exhausting mechanism for an injection mold is provided. Summary of the invention

[0006] The purpose of the present invention is to solve the above-mentioned problem and to propose a degassing and exhaust mechanism for an injection mold.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a defoaming and exhausting mechanism of an injection mold, comprising a base, a molding mold installed on the base, and an exhaust hole formed in the base, a shell sleeve and an output pipe coaxially distributed are fixedly arranged on the inner side of the base, a first rotating disk and a second rotating disk are rotatably connected between the shell sleeve and the output pipe, a plurality of annularly distributed air storage chambers are fixedly arranged on the second rotating disk, a one-way flow structure is provided on the air storage chamber, a filter element is installed in the output pipe, and a coolant is filled in the shell sleeve; A plug disc is slidably connected in the air storage chamber, and a rotary sleeve is rotatably connected to the bottom of the air storage chamber. A pressure structure is provided in the air storage chamber. When the rotary sleeve rotates, the plug disc moves in the vertical direction under the action of the pressure structure. An annular frame is provided on the outer rotating sleeve of the output pipe, and a bending frame is slidably provided on the side of the annular frame. A disc-shaped frame is fixedly provided at the outer end of the output pipe, and a driving member for controlling the reciprocating rotation of the annular frame is provided on the disc-shaped frame. A guide member for adjusting the position of the bending frame relative to the annular frame is provided on the disc-shaped frame, and a toggle structure for alternately acting on the rotary sleeve and the second turntable is provided on the bending frame when the bending frame rotates with the annular frame.

[0008] Preferably, the one-way circulation structure includes a docking groove formed in the first turntable corresponding to the air storage chamber, an intake pipe corresponding to the docking groove is fixedly provided between the air storage chamber and the first turntable, a rotating ring is rotatably connected to the outer side of the output pipe, an exhaust pipe is connected between the rotating ring and the air storage chamber, one-way air valves are installed in the intake pipe and the exhaust pipe, and an exhaust groove is formed in the output pipe and is connected to one of the exhaust pipes through a driven ring.

[0009] Preferably, the pressing structure includes a sliding rod fixed at the bottom of the plug disc and penetrating the air storage chamber downward, and an elastic reset component acting on the plug disc upward. A protrusion is formed on the inner wall of the rotary sleeve, and a spiral slide rail is formed on the side wall of the sliding rod to cooperate with the protrusion to slide.

[0010] Preferably, the elastic reset assembly comprises a compression spring fixedly arranged at the bottom of the air storage chamber, and the free end of the compression spring is fixed to the bottom of the plug disc.

[0011] Preferably, the driving member comprises a telescopic mechanism rotatably mounted on the disc-shaped frame, and a free end of the telescopic mechanism is rotatably connected to the annular frame.

[0012] Preferably, a baffle that cooperates with the sliding of the bending frame is fixedly provided on the side end of the annular frame, the guide member includes a return spring abutting between the bending frame and the annular frame, a bracket is fixedly provided on the upper end of the disc-shaped frame, and a magnetic block with the same magnetic poles is fixedly provided on the opposite end of the bracket and the bending frame, and a guide component that cooperates with the movement guide of the bending frame is formed on the disc-shaped frame.

[0013] Preferably, the guide assembly comprises a vertical rod fixed on the bending frame, and a slideway cooperating with the vertical rod for sliding is formed on the disc frame.

[0014] Preferably, the slideway is composed of an inner ring groove, an outer ring groove and two radial grooves connecting the inner ring groove and the end of the outer ring groove, and the bracket is distributed in a straight line with one of the radial grooves.

[0015] Preferably, a support arm is fixedly provided on the side end of the rotating sleeve, the toggle mechanism includes a portion of a vertical rod extending upward from the bending frame, a driven ring fixed to the second turntable is rotatably connected between the annular frame and the output pipe, an insertion rod is fixedly provided on one end of the bending frame facing the annular frame, and a slot for inserting the insertion rod is formed on the side wall of the driven ring.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present application, when the air storage chamber rotates with the second turntable, the air storage chamber can be in active contact with the coolant at different positions, thereby realizing a rapid cooling effect on the high-temperature gas. When the high-temperature gas is cooled, as the second turntable rotates into place, the gas in the air storage chamber will flow into the output pipe in one direction, and the gas cooled to room temperature will be filtered by the filter element, thereby improving the filtering effect on the gas.

[0017] 2. In the present application, when the injection molded parts are being injected into the molding mold, gas enters the gas storage chamber. As the second turntable rotates, the docking groove facing the exhaust hole is switched. By rotating and switching multiple gas storage chambers, the injection mold can continuously perform injection molding on batch injection molded parts, thereby improving the injection molding efficiency while ensuring continuous and effective absorption of the gas generated by the injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of an injection mold provided according to an embodiment of the present invention is shown; Figure 2 A schematic cross-sectional structure diagram of an injection mold provided according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the internal structure of a housing provided according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the bottom structure of a second rotating disk provided according to an embodiment of the present invention is shown; Figure 5 A schematic cross-sectional view of a disc-type frame according to an embodiment of the present invention is shown; Figure 6 A schematic cross-sectional view of the internal structure of a housing provided according to an embodiment of the present invention is shown; Figure 7 A schematic cross-sectional view of the structure of an air storage chamber according to an embodiment of the present invention is shown; Figure 8 A schematic exploded view of the structure of a disc frame and a driven ring provided according to an embodiment of the present invention is shown.

[0019] Legend: 1. Base; 2. Forming mold; 3. Exhaust hole; 4. First turntable; 401. Docking groove; 5. Shell; 6. Output pipe; 601. Exhaust groove; 7. Rotary ring; 8. Air storage chamber; 9. Inlet pipe; 10. Exhaust pipe; 11. One-way air valve; 12. Filter element; 13. Plug plate; 14. Slide rod; 15. Spiral slide rail; 16. Compression spring; 17. Rotary sleeve; 18. Protrusion; 19. Support arm; 20. Second turntable; 21. Follower ring; 22. Slot; 23. Ring frame; 24. Baffle; 25. Bending frame; 26. Vertical rod; 27. Insert rod; 28. Reset spring; 29. ​​Bracket; 30. Magnetic block; 31. Disc frame; 32. Telescopic mechanism; 33. Slideway. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 8 The present invention provides a technical solution: a degassing and exhaust mechanism for an injection mold, comprising a base 1, a molding mold 2 installed on the base 1, and an exhaust hole 3 formed in the base 1, a shell 5 and an output pipe 6 coaxially distributed are fixedly arranged on the inner side of the base 1, a first turntable 4 and a second turntable 20 are rotatably connected between the shell 5 and the output pipe 6, a plurality of annularly distributed air storage chambers 8 are fixedly arranged on the second turntable 20, a one-way flow structure for matching gas suction and discharge to the output pipe 6 is provided on the air storage chamber 8, a filter element 12 is installed in the output pipe 6, and the shell 5 is filled with coolant.

[0022] The gas exhausted from the exhaust hole 3 is sucked into the gas storage chamber 8 through the gas one-way flow structure. When the gas storage chamber 8 rotates to a specified position along with the second turntable 20, the gas is discharged into the output pipe 6 through the one-way flow structure.

[0023] The exhaust hole 3 shown in the figure of this application is for illustration only. In actual use, the size of the exhaust hole 3 should be designed to prevent the molten material from overflowing into the groove and prevent the exhaust hole 3 from being blocked. The width of the exhaust hole 3 should be between 4-10 mm according to the size of the mold, the front end depth should be smaller than the edge value of the molten material, and the length should be 3-6 mm. When the injection molded part is being injected into the molding mold 2, the gas enters the gas storage chamber 8 inside the shell 5 through the docking groove 401 corresponding to the exhaust hole 3. As the second turntable 20 rotates, the docking groove 401 facing the exhaust hole 3 is switched. By rotating and switching multiple gas storage chambers 8, the injection mold can continuously and effectively absorb the generated gas when continuously injecting and molding batch injection molded parts.

[0024] Since the air storage chamber 8 is immersed in the coolant, when the air storage chamber 8 rotates with the second turntable 20, the air storage chamber 8 can make active contact with the coolant at different positions, so that the heat of the high-temperature gas discharged into the air storage chamber 8 can be quickly taken away by the coolant, thereby achieving a rapid cooling effect on the high-temperature gas, which is beneficial to the safety of the gas when it is discharged outward.

[0025] When the high-temperature gas is cooled in the gas storage chamber 8, as the second rotary disk 20 rotates to the right position, the gas storage chamber 8 will be connected to the output pipe 6 in one direction through the gas one-way flow structure. At this time, the gas in the gas storage chamber 8 will flow into the output pipe 6 in one direction, and the gas cooled to room temperature will be filtered by the filter element 12 installed in the output pipe 6 to improve the filtering effect of the gas. The filter element 12 is an activated carbon adsorption filter cartridge.

[0026] A plug disc 13 is slidably connected in the air storage chamber 8, and a rotary sleeve 17 is rotatably connected to the bottom of the air storage chamber 8. A pressing structure is provided in the air storage chamber 8. When the rotary sleeve 17 rotates, the plug disc 13 moves in the vertical direction under the action of the pressing structure. An annular frame 23 is rotatably provided on the outer side of the output pipe 6, and a bending frame 25 is slidably provided on the side of the annular frame 23. A disc frame 31 is fixedly provided at the outer end of the output pipe 6, and a driving member for controlling the reciprocating rotation of the annular frame 23 is provided on the disc frame 31. A guide member for adjusting the position of the bending frame 25 relative to the annular frame 23 is provided on the disc frame 31. The bending frame 25 is provided with a toggle structure that alternately acts on the rotary sleeve 17 and the second turntable 20 when it rotates with the annular frame 23.

[0027] When the annular frame 23 rotates counterclockwise (the direction of rotation is based on the top view shown in the figure), the bending frame 25 is in an outwardly extended state, and the air storage chamber 8 corresponding to the exhaust hole 3, the rotating sleeve 17 at the bottom will rotate under the action of the toggle member, and the second turntable 20 will remain stationary, so that the plug disc 13 moves downward under the action of the pressing member, and then the gas discharged from the exhaust hole 3 is sucked into the air storage chamber 8 through the one-way flow structure. As the annular frame 23 rotates counterclockwise to the right position, the bending frame 25 will slide and extend relative to the annular frame 23 under the action of the guide member.

[0028] When the annular frame 23 rotates clockwise, the bending frame 25 is in a shortened state, and the second turntable 20 is driven to rotate through the toggle member to switch the air storage chamber 8 facing the exhaust hole 3. Before the air storage chamber 8 is connected to the output pipe 6 through the one-way flow structure, the gas in the air storage chamber 8 cannot be discharged in a short time, and the gas in the air storage chamber 8 will be fully cooled down.

[0029] As the second turntable 20 rotates, the one-way flow structure on the air storage chamber 8 is connected to the exhaust groove 601 on the output pipe 6. At this time, the plug disc 13 will move upward under the action of the pressure-driven structure, and the gas stored in the air storage chamber 8 that has been cooled will be discharged into the output pipe 6, and then discharged to the outside after being filtered by the filter element 12.

[0030] Specifically, Figure 3-Figure 7 As shown, the one-way flow structure includes a docking groove 401 formed in the first turntable 4 corresponding to the air storage chamber 8, an intake pipe 9 corresponding to the docking groove 401 is fixedly provided between the air storage chamber 8 and the first turntable 4, a rotating ring 7 is rotatably connected to the outer side of the output pipe 6, an exhaust pipe 10 is connected between the rotating ring 7 and the air storage chamber 8, a one-way air valve 11 is installed in the intake pipe 9 and the exhaust pipe 10, and an exhaust groove 601 is formed in the output pipe 6 and is connected to one of the exhaust pipes 10 through a driven ring 21.

[0031] The one-way air valve 11 is a directional control valve that allows air flow in only one direction in the air path, while blocking the reverse flow. The one-way air valve 11 in the air intake pipe 9 is a one-way air intake valve, and the one-way air valve 11 in the exhaust pipe 10 is a one-way exhaust valve.

[0032] When the second turntable 20 drives the air storage chamber 8 to rotate, the air inlet pipe 9 fixed to the air storage chamber 8 will drive the first turntable 4 to rotate synchronously until the docking groove 401 is aligned with the exhaust hole 3. By controlling the plug disc 13 in the corresponding air storage chamber 8 to move downward, the gas generated by injection molding will enter the air storage chamber 8 through the exhaust hole 3, the docking groove 401 and the air inlet pipe 9 in sequence.

[0033] After the air storage chamber 8 completes the inhalation of gas, with the rotation of the second turntable 20, the docking groove 401 corresponding to the air storage chamber 8 will be offset from the exhaust groove 601, and the exhaust pipe 10 fixed to the air storage chamber 8 will drive the rotary ring 7 to rotate along the output pipe 6. Before the rotary ring 7 is connected with the output pipe 6 through the exhaust groove 601, the air storage chamber 8 is always in a closed state, and the plug disc 13 will remain stationary relative to the air storage chamber 8 under the action of air pressure. With the rotation of the second turntable 20, the position of the air storage chamber 8 is switched, so that the rotary ring 7 is connected with the exhaust groove 601. At this time, the plug disc 13 will move upward along the air storage chamber 8 under the action of the compression spring 16, and discharge the normal temperature gas into the output pipe 6 through the exhaust pipe 10, thereby realizing the filtering treatment of the gas.

[0034] Specifically, Figure 6 and Figure 7 As shown, the pressing structure includes a slide rod 14 fixed at the bottom of the plug disc 13 and penetrating the air storage chamber 8 downward, and an elastic reset component acting on the plug disc 13 upward. A protrusion 18 is formed on the inner wall of the rotary sleeve 17, and a spiral slide rail 15 is formed on the side wall of the slide rod 14 to cooperate with the protrusion 18 to slide.

[0035] When the rotary sleeve 17 rotates, the protrusion 18 fixed on the inner wall of the rotary sleeve 17 will slide along the spiral slide rail 15. The protrusion 18 presses the spiral slide rail 15 to drive the plug disc 13 fixed to the slide rod 14 to move downward along the air storage chamber 8.

[0036] The elastic reset assembly includes a compression spring 16 fixed to the bottom of the air storage chamber 8, and the free end of the compression spring 16 is fixed to the bottom of the plug disc 13. When the plug disc 13 moves upward along the air storage chamber 8 under the action of the compression spring 16, the spiral slide rail 15 will pass through the acting protrusion 18, driving the rotary sleeve 17 fixed to the protrusion 18 to rotate and reset accordingly.

[0037] Specifically, Figure 8 As shown, the driving member includes a telescopic mechanism 32 rotatably mounted on a disc-shaped frame 31 , and a free end of the telescopic mechanism 32 is rotatably connected to the annular frame 23 .

[0038] The telescopic mechanism 32 is an existing hydraulic or pneumatic telescopic rod. By controlling the extension and retraction of the free end of the telescopic mechanism 32, the annular frame 23 is driven to rotate along the output pipe 6. During this process, the telescopic mechanism 32 will also rotate along the disc frame 31. The driving member is not limited to the telescopic mechanism 32. The rotation of the annular frame 23 can also be controlled by the existing gear meshing method and the pulley transmission method.

[0039] Specifically, Figure 4-Figure 8 As shown, a baffle 24 cooperating with the sliding of the bending frame 25 is fixedly provided at the side end of the annular frame 23, and the guide member includes a return spring 28 abutting between the bending frame 25 and the annular frame 23, a bracket 29 is fixedly provided at the upper end of the disc frame 31, and a magnetic block 30 with the same magnetic poles is fixedly provided at the opposite end of the bracket 29 and the bending frame 25, and a guide component cooperating with the movement guide of the bending frame 25 is formed on the disc frame 31.

[0040] When the annular frame 23 rotates counterclockwise under the traction of the telescopic mechanism 32 (the direction of rotation is based on the top view of the figure), the bending frame 25 remains in an outwardly extended state under the action of the reset spring 28. As the annular frame 23 rotates to the right position, the bending frame 25 and the bracket 29 are distributed in the same radial direction relative to the disc frame 31. Since the repulsive force between the two magnetic blocks 30 with the same polarity is much greater than the elastic force of the reset spring 28, the bending frame 25 will slide along the baffle 24 toward the annular frame 23 under the action of the magnetic force. When the annular frame 23 rotates clockwise to reset, the bending frame 25 will always remain in an inwardly shortened state relative to the baffle 24 under the action of the guide assembly.

[0041] The guide assembly includes a vertical rod 26 fixed on the bending frame 25, and a slideway 33 is formed on the disc frame 31 to cooperate with the vertical rod 26 to slide. The slideway 33 is composed of an inner ring groove, an outer ring groove and two radial grooves connecting the ends of the inner ring groove and the outer ring groove. The bracket 29 is distributed in the same straight line as one of the radial grooves.

[0042] When the bending frame 25 moves in the annular direction as the annular frame 23 rotates, the vertical rod 26 fixed on the bending frame 25 slides along the inner ring groove or the outer ring groove of the slideway 33, so that the bending frame 25 maintains a stable extended or retracted state relative to the baffle 24. As the annular frame 23 rotates to the right position, if the bending frame 25 is radially distributed with the bracket 29, as the bending frame 25 slides toward the annular frame 23, the vertical rod 26 will slide from the outer ring groove to the inner ring groove along the radial groove of the slideway 33. If the bending frame 25 is not radially distributed with the bracket 29, the bending frame 25 will slide away from the annular frame 23 under the action of the return spring 28, and the vertical rod 26 will slide from the inner ring groove to the outer ring groove along the radial groove of the slideway 33.

[0043] A support arm 19 is fixedly provided at the side end of the rotating sleeve 17, and the toggle mechanism includes a vertical rod 26 extending upward from the portion of the bending frame 25, a driven ring 21 fixed to the second turntable 20 is rotatably connected between the annular frame 23 and the output pipe 6, and an insertion rod 27 is fixedly provided at one end of the bending frame 25 facing the annular frame 23, and a slot 22 is formed on the side wall of the driven ring 21 to fit the insertion rod 27.

[0044] When the bending frame 25 is in the extended state, the insertion rod 27 fixed on the bending frame 25 is in the non-plugged state with the slot 22. As the annular frame 23 rotates counterclockwise, the part of the vertical rod 26 extending upward from the bending frame 25 will drive the rotating sleeve 17 fixed to the arm 19 to rotate through the side wall of the acting support arm 19. In this process, the second rotating disk 20 fixed to the annular frame 23 remains stationary, so that the gas storage chamber 8 remains in a stable state to suck gas into the gas. When the bending frame 25 slides toward the annular frame 23, the insertion rod 27 fixed on the bending frame 25 will be inserted into the slot 22. At this time, as the annular frame 23 rotates clockwise, it will drive the second rotating disk 20 fixed to the driven ring 21 to rotate synchronously, and the position of the gas storage chamber 8 is switched. By controlling the reciprocating rotation of the annular frame 23, the unidirectional rotation of the second rotating disk 20 is controlled, thereby realizing the rotation cycle of the gas storage chamber 8.

[0045] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A degassing and exhausting mechanism for an injection mold, comprising a base (1), a molding mold (2) mounted on the base (1), and an exhaust hole (3) formed in the base (1), characterized in that: A shell (5) and an output pipe (6) are fixedly provided on the inner side of the base (1) and are coaxially distributed. A first rotating disk (4) and a second rotating disk (20) are rotatably connected between the shell (5) and the output pipe (6). A plurality of annularly distributed gas storage chambers (8) are fixedly provided on the second rotating disk (20). The gas storage chambers (8) are provided with a one-way flow structure for gas suction and discharge to the output pipe (6). A filter element (12) is installed in the output pipe (6). The shell (5) is filled with coolant. A plug disc (13) is slidably connected to the gas storage chamber (8), a rotary sleeve (17) is rotatably connected to the bottom of the gas storage chamber (8), a pressure structure is provided in the gas storage chamber (8), when the rotary sleeve (17) rotates, the plug disc (13) moves in the vertical direction under the action of the pressure structure, an annular frame (23) is rotatably provided on the outer side of the output pipe (6), a bending frame (25) is slidably provided on the side of the annular frame (23), a disc frame (31) is fixedly provided at the outer end of the output pipe (6), a driving member for controlling the reciprocating rotation of the annular frame (23) is provided on the disc frame (31), a guide member for adjusting the position of the bending frame (25) relative to the annular frame (23) is provided on the disc frame (31), and a toggle structure for alternately acting on the rotary sleeve (17) and the second rotating disc (20) is provided on the bending frame (25) when the bending frame (25) rotates with the annular frame (23).

2. The degassing and exhausting mechanism of an injection mold according to claim 1, characterized in that: The one-way flow structure comprises a docking groove (401) formed in the first rotating disk (4) and corresponding to the air storage chamber (8); an air intake pipe (9) corresponding to the docking groove (401) is fixedly arranged between the air storage chamber (8) and the first rotating disk (4); a rotating ring (7) is rotatably connected to the outer side of the output pipe (6); an exhaust pipe (10) is connected between the rotating ring (7) and the air storage chamber (8); a one-way air valve (11) is installed in the air intake pipe (9) and the exhaust pipe (10); and an exhaust groove (601) is formed in the output pipe (6) and is connected to one of the exhaust pipes (10) via a driven ring (21).

3. The degassing and exhausting mechanism of an injection mold according to claim 1, characterized in that: The pressing structure comprises a slide bar (14) fixed at the bottom of the plug disc (13) and penetrating downwardly through the air storage chamber (8), and an elastic reset component acting on the plug disc (13) upwardly, the inner wall of the rotary sleeve (17) is formed with a protrusion (18), and the side wall of the slide bar (14) is formed with a spiral slide rail (15) that cooperates with the protrusion (18) to slide.

4. The degassing and exhausting mechanism of an injection mold according to claim 3, characterized in that: The elastic reset assembly comprises a compression spring (16) fixedly mounted on the bottom of the air storage chamber (8), wherein the free end of the compression spring (16) is fixed to the bottom of the plug disc (13).

5. The degassing and exhausting mechanism of an injection mold according to claim 1, characterized in that: The driving member comprises a telescopic mechanism (32) rotatably mounted on a disc-shaped frame (31), and a free end of the telescopic mechanism (32) is rotatably connected to the annular frame (23).

6. The degassing and exhausting mechanism of an injection mold according to claim 1, characterized in that: A baffle (24) is fixedly provided at the side end of the annular frame (23) for cooperating with the bending frame (25) to slide, the guide member comprises a return spring (28) abutting between the bending frame (25) and the annular frame (23), a bracket (29) is fixedly provided at the upper end of the disc-shaped frame (31), a magnetic block (30) having the same magnetic pole as the bracket (29) and the bending frame (25) is fixedly provided at one end opposite to the bracket (29), and a guide assembly is formed on the disc-shaped frame (31) for cooperating with the bending frame (25) to guide movement.

7. The degassing and exhausting mechanism of an injection mold according to claim 6, characterized in that: The guide assembly comprises a vertical rod (26) fixedly mounted on the bending frame (25), and a slideway (33) cooperating with the vertical rod (26) for sliding is formed on the disc frame (31).

8. The degassing and exhausting mechanism of an injection mold according to claim 7, characterized in that: The slideway (33) is composed of an inner ring groove, an outer ring groove, and two radial grooves connecting the ends of the inner ring groove and the outer ring groove, and the bracket (29) is distributed in a straight line with one of the radial grooves.

9. The degassing and exhausting mechanism of an injection mold according to claim 1, characterized in that: A support arm (19) is fixedly provided at a side end of the rotary sleeve (17); the toggle mechanism comprises a portion of a vertical rod (26) extending upward from a bending frame (25); a driven ring (21) fixed to a second rotating disk (20) is rotatably connected between the annular frame (23) and the output pipe (6); an insertion rod (27) is fixedly provided at one end of the bending frame (25) facing the annular frame (23); and a slot (22) for inserting the insertion rod (27) is formed on a side wall of the driven ring (21).

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