An injection mold for automobile injection molded parts with demoulding and anti-deformation function

Abstract

The present invention discloses an injection mold for automobile injection molding parts with demoulding and anti-deformation, which relates to the field of injection molds, including an upper mold, a lower mold is installed at the bottom of the upper mold, a top support connecting piece is connected to the output end of a driving device, and an intermittent support piece is installed on one side of a support frame. The present invention sets a top support connecting piece and an intermittent support piece, and when a U-shaped pressing plate moves downward relative to the support frame, the air inside the second corrugated telescopic tube is ejected from the air hole, so as to impact the part connected to the injection molding part and the injection molding cavity, and when the U-shaped pressing plate moves upward, part of the heat at the bottom of the injection molding part will enter the first corrugated telescopic tube together with the air, so as to achieve heat dissipation of the bottom of the injection molding part, further reduce the adhesion strength between the bottom of the injection molding part and the inner wall of the injection molding cavity, and prevent uneven force caused by the part of the injection molding part being connected to the injection molding cavity when the injection molding part is ejected from the injection molding cavity, thereby preventing deformation when the injection molding part is demoulded.

Description

Technical Field

[0001] The invention relates to the field of injection molds, in particular to an injection mold for automobile injection molded parts with demoulding and anti-deformation function. Background Art

[0002] Automotive injection molding refers to plastic parts produced by injection molding in the production of automobiles. They are usually used to provide structural support, exterior decoration, waterproof protection and other functions for automobiles, such as dashboards, door panels, headlights, etc. The injection molding process is to inject the molten plastic into the mold, and then cool and solidify it in the mold to obtain parts of the desired shape, followed by demoulding operations to remove the cooled and fixed injection molded parts from the mold.

[0003] The traditional demoulding method is to use a cylinder to push the ejector pin, which applies a large force to the injection molded part in the injection cavity to lift the injection molded part at one time. Since part of the injection molded part is still connected to the injection cavity, this will cause a large deformation at the lifting point and other parts of the injection molded part. This will cause the injection molded part to fail and deform easily during the demoulding process, resulting in white tear bands, affecting the quality of the finished injection molded part. Summary of the invention

[0004] The purpose of the present invention is to provide an automobile injection mold with anti-deformation demoulding function in order to solve the problem that the injection molded part is easily deformed when the injection molded part is demoulded.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection mold for automobile injection molding parts with demolding and anti-deformation, comprising an upper mold, a lower mold is installed at the bottom of the upper mold, a mold connecting bin is installed at the bottom of the lower mold, an injection cavity is opened on the inner side of the lower mold, a support frame located on the inner side of the mold connecting bin is installed at the bottom of the lower mold, the support frame is an H-shaped structure, a driving device is installed at the bottom of the support frame, the driving source of the driving device is a motor, the output end of the driving device is connected to a top support member, the output end of the driving device is connected to a top block extending to the inner side of the injection cavity through the top support member, and an intermittent support member is installed on one side of the support frame.

[0006] As a further solution of the present invention: the top support connecting member includes a first rotating disk installed at the output end of the driving device, a shift pin rod is installed at one end of the first rotating disk away from the driving device, and a second rotating disk is installed at one end of the shift pin rod away from the first rotating disk, and the second rotating disk is rotatably connected to the support frame through a rotating shaft, and a second corrugated telescopic tube located above the shift pin rod is installed on the inner side of the support frame, and a U-shaped pressure plate is installed on the top of the second corrugated telescopic tube, and the first corrugated telescopic tube connected to the support frame is installed on the inner side of the U-shaped pressure plate, and the number of the first corrugated telescopic tubes is provided with two, and the two first corrugated telescopic tubes are symmetrically arranged along the vertical center axis of the second corrugated telescopic tube, and straight groove connecting blocks are installed on the two ends of the bottom of the U-shaped pressure plate and are sleeved on the outside of the shift pin rod, and a second one-way valve is installed at the bottom of the second corrugated telescopic tube, and the bottom end of the second one-way valve is installed The vent pipe is provided with a first check valve at the bottom end of the first check valve, and an exhaust pipe is provided at the bottom end of the first check valve, which extends to the outside of the mold connecting warehouse. The third check valve located on one side of the second check valve is installed at the bottom of the second check valve, and a support frame plate located above the U-shaped pressure plate is slidably connected to the support frame, and a plurality of connecting ducts are installed on the top of the support frame plate. The top block is installed on the top of the connecting duct, and a telescopic protective pipe located on the outside of the connecting duct is installed on the top of the support frame plate. An air guide pipe is provided at the bottom of the adjacent connecting duct, and a first hose connected to the air guide pipe is provided at the bottom of the third check valve, and a fourth check valve connected to the first corrugated telescopic pipe is provided on the top of the U-shaped pressure plate. A second hose connected to the air guide pipe is provided on the top of the fourth check valve, and air holes are opened around the top block.

[0007] As a further solution of the present invention: the air inlet end of the third one-way valve is connected to the bottom of the second corrugated expansion tube, the air inlet end of the fourth one-way valve is connected to the second hose, the air inlet end of the second one-way valve is connected to the intake pipe, and the air outlet end of the first one-way valve is connected to the exhaust pipe.

[0008] As a further solution of the present invention: the inner side of the support frame is provided with through holes that match the two ends of the bottom of the U-shaped pressure plate, the shift pin and the center of the first rotating disk are in a misaligned state, and the center of the first rotating disk is coaxial with the center of the second rotating disk.

[0009] As a further scheme of the present invention: the intermittent support member includes a first half gear installed on the end of the second shift disk away from the shift pin rod, a side connecting plate is installed on the side of the support frame away from the driving device, and the bottom of the side connecting plate is rotatably connected to the first spur gear through a rotating shaft, and a second spur gear located above the first half gear is provided on one side of the support frame, and a second half gear located above the first spur gear is installed on the end of the second spur gear away from the support frame, and a second transmission bevel gear is installed on one end of the rotating shaft connecting the first spur gear and the side connecting plate, and a reciprocating screw rod is provided at the bottom of the lower mold on the side of the side connecting plate away from the support frame, a transmission rod is installed at the bottom end of the reciprocating screw rod, and the first transmission bevel gear meshing with the second transmission bevel gear is installed at the bottom end of the transmission rod, and a guide movable plate connected to the support frame plate is movably sleeved on the reciprocating screw rod.

[0010] As a further solution of the present invention: a crescent pin matching the reciprocating screw is arranged on the guide movable plate, and the length of the reciprocating screw is equal to the extension length of the telescopic protective tube.

[0011] As a further solution of the present invention: the second spur gear is coaxial with the center of the second half gear, and the first half gear is coaxial with the center of the first spur gear.

[0012] As a further solution of the present invention: a gap is left between the first half gear and the first spur gear.

[0013] As a further solution of the present invention: the sum of the internal spaces of the first bellows expansion tubes on both sides of the second bellows expansion tube is equal to the internal space of the second bellows expansion tube.

[0014] As a further solution of the present invention: the distance between one end of the exhaust pipe and the outer wall of the mold connection chamber is greater than the distance between one end of the intake pipe and the outer wall of the mold connection chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting the top support and intermittent support, when the driving device is in operation, the top block will be driven to rise a certain distance through the intermittent support. At this time, part of the injection molded part will be lifted to a certain height. When the U-shaped pressing plate moves downward relative to the support frame, the air inside the second corrugated telescopic tube is ejected from the air hole to impact the part connected to the injection molded part and the injection cavity. When the U-shaped pressing plate moves upward, the outside air enters the inner side of the second corrugated telescopic tube and is injected into the injection cavity and the bottom of the injection molded part through the air hole. The air at the bottom of the injection molded part will enter the first bellows expansion tube. In this process, part of the heat at the bottom of the injection molded part will enter the first bellows expansion tube together with the air, so as to achieve heat dissipation at the bottom of the injection molded part, further reducing the adhesion strength between the bottom of the injection molded part and the inner wall of the injection cavity. In this way, the bottom of the injection molded part and the injection cavity can be quickly separated, preventing uneven force due to the connection between part of the injection molded part and the injection cavity when the injection molded part is ejected from the injection cavity, thereby preventing deformation of the injection molded part during demoulding.

[0017] 2. By setting an intermittent support, when the second indexing disc rotates with the operation of the driving device, it will drive the first half gear to rotate synchronously. When the first half gear is meshed with the second spur gear, the second spur gear will rotate a certain angle with the first half gear, and the second half gear will rotate with the second spur gear. When the second indexing disc rotates several times, the second half gear is meshed with the first spur gear. At this time, the first spur gear will drive the second transmission bevel gear to rotate a certain angle with the rotation of the second half gear, so that the second transmission bevel gear can be driven by the first transmission bevel gear and the transmission rod to drive the reciprocating screw to rotate. At this time, the guide movable plate will drive the support frame plate to move up a certain distance, so that the airflow can impact the connection between the bottom of the injection molded part and the injection cavity for multiple times, and then the support frame plate drives the top block to rise a certain distance, so that the top block can intermittently push the injection molded part, and at the same time, the bottom of the injection molded part and the injection cavity are separated when the top block pushes the injection molded part, so as to prevent the injection molded part from bending due to excessive lifting distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the top structure of the lower mold of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the mold connection chamber of the present invention;

[0021] Figure 4 It is a schematic diagram of the connection between the support frame and the second corrugated telescopic tube of the present invention;

[0022] Figure 5It is a schematic diagram of the connection between the support frame plate and the support frame of the present invention;

[0023] Figure 6 It is a schematic diagram of the connection between the top block and the support frame plate of the present invention;

[0024] Figure 7 It is a schematic diagram of the connection between the first bellows expansion tube and the second bellows expansion tube of the present invention;

[0025] Figure 8 It is a schematic diagram of the connection between the U-shaped pressing plate and the first indexing disc of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of the support frame of the present invention;

[0027] Fig.10 It is a schematic diagram of the connection between the first half gear and the first spur gear of the present invention.

[0028] In the figure: 1, upper mold; 2, lower mold; 3, mold connection chamber; 401, suction pipe; 402, exhaust pipe; 403, top block; 404, telescopic protection pipe; 405, driving device; 406, support frame plate; 407, support frame; 408, reciprocating screw rod; 409, U-shaped pressure plate; 410, first corrugated telescopic pipe; 411, first transfer plate; 412, shifting pin rod; 413, side connecting plate; 414, first transmission bevel gear; 415, air guide pipe; 416, second corrugated telescopic pipe; 417, air hole ; 418, connecting conduit; 419, first hose; 420, second hose; 421, guide movable plate; 422, first one-way valve; 423, second one-way valve; 424, second transfer disk; 425, first half gear; 426, straight groove connecting block; 427, third one-way valve; 428, first straight gear; 429, second transmission bevel gear; 430, second straight gear; 431, second half gear; 432, transmission rod; 433, fourth one-way valve; 5, injection cavity; 6, top support connecting piece; 7, intermittent support piece. DETAILED DESCRIPTION

[0029] 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.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0031] See also Figures 1 to 10 In an embodiment of the present invention, an injection mold for automobile injection molded parts with demolding and anti-deformation, includes an upper mold 1, a lower mold 2 is installed at the bottom of the upper mold 1, a mold connecting bin 3 is installed at the bottom of the lower mold 2, an injection cavity 5 is opened on the inner side of the lower mold 2, a support frame 407 located on the inner side of the mold connecting bin 3 is installed at the bottom of the lower mold 2, the support frame 407 is an H-shaped structure, a driving device 405 is installed at the bottom of the support frame 407, the driving source of the driving device 405 is a motor, the output end of the driving device 405 is connected to a top support member 6, the output end of the driving device 405 is connected to a top block 403 extending to the inner side of the injection cavity 5 through the top support member, and an intermittent support member 7 is installed on one side of the support frame 407.

[0032] In this embodiment, when the upper mold 1 and the lower mold 2 are molded together, the material is injected into the injection cavity 5 through the injection port on the upper mold 1. When the upper mold 1 and the lower mold 2 are separated, the injection molded part will remain in the injection cavity 5. At this time, the driving device 405 is started, and the driving device 405 drives the operation of the intermittent support member 7 to move the top block 403 toward the injection cavity 5 for a distance, so that the top block 403 can lift part of the injection molded part to a certain height, and at the same time, the top support member 6 can be used to make the injection molded part The position where the plastic part is connected to the inner wall of the injection cavity 5 is separated. As the driving device 405 continues to operate, the intermittent support member will lift the injection molded part to a certain height again, cool the bottom of the lifted injection molded part through the top support member, and impact the connection between the bottom of the injection molded part and the injection cavity 5, so as to separate the bottom of the injection molded part from the injection cavity 5. At the same time, the intermittent support member 7 intermittently lifts the injection molded part to completely separate the injection molded part from the injection cavity 5. When the injection molded part is separated from the injection cavity 5, the injection molded part can be removed.

[0033] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8The top support member 6 includes a first rotating disk 411 installed at the output end of the driving device 405, a shifting pin 412 is installed at one end of the first rotating disk 411 away from the driving device 405, a second rotating disk 424 is installed at one end of the shifting pin 412 away from the first rotating disk 411, the second rotating disk 424 is rotatably connected to the support frame 407 through a rotating shaft, a second corrugated telescopic tube 416 located above the shifting pin 412 is installed on the inner side of the support frame 407, and a U-shaped pressure plate 4 is installed on the top of the second corrugated telescopic tube 416. 09, a first bellows expansion tube 410 connected to the support frame 407 is installed on the inner side of the U-shaped pressing plate 409, the number of the first bellows expansion tube 410 is set to two, and the two first bellows expansion tubes 410 are symmetrically arranged along the vertical center axis of the second bellows expansion tube 416, and the two ends of the bottom of the U-shaped pressing plate 409 are installed with straight groove connecting blocks 426 sleeved on the outside of the shifting pin rod 412, and the bottom of the second bellows expansion tube 416 is installed with a second one-way valve 423, and the bottom end of the second one-way valve 423 is installed with a valve extending to the outside of the mold connection chamber 3. The first one-way valve 422 is installed at the bottom end of the first bellows expansion pipe 410, and the exhaust pipe 402 extending to the outside of the mold connection chamber 3 is arranged at the bottom end of the first one-way valve 422. The third one-way valve 427 located on one side of the second one-way valve 423 is installed at the bottom of the second bellows expansion pipe 416. The support frame 407 is slidably connected with a support frame plate 406 located above the U-shaped pressure plate 409. A plurality of connecting conduits 418 are installed on the top of the support frame plate 406. The top block 403 is installed on the connecting conduit 418. At the top, a telescopic protective tube 404 located outside the connecting duct 418 is installed on the top of the supporting frame plate 406, an air duct 415 is arranged at the bottom of the adjacent connecting duct 418, a first hose 419 connected to the air duct 415 is arranged at the bottom of the third one-way valve 427, a fourth one-way valve 433 connected to the first corrugated telescopic tube 410 is arranged on the top of the U-shaped pressure plate 409, a second hose 420 connected to the air duct 415 is arranged at the top of the fourth one-way valve 433, and air holes 417 are opened around the top block 403.

[0034] In the present embodiment, when the driving device 405 is in operation, the jacking block 403 will be driven to rise a certain distance through the intermittent support member, and at this time, part of the position of the injection molded part will be lifted to a certain height, and at the same time, when the driving device 405 drives the first indexing disk 411 to rotate, the first indexing disk 411 will drive the U-shaped pressing plate 409 to move up and down reciprocatingly through the shifting pin rod 412 and the straight groove connecting block 426. When the U-shaped pressing plate 409 moves downward relative to the support frame 407, the air inside the second corrugated telescopic tube 416 will be injected into the connecting duct 418 through the third one-way valve 427, the first hose 419, and the air guide tube 415, and finally ejected from the air hole 417, so as to impact the part of the injection molded part connected to the injection cavity 5, and at the same time, the air inside the first corrugated telescopic tube 410 will be discharged through the first one-way valve 422 and the exhaust pipe 402, so as to separate the bottom of the injection molded part from the injection cavity 5. When the U-shaped pressing plate 409 moves upward, due to the negative pressure formed inside the second bellows expansion tube 416, the outside air will enter the inner side of the second bellows expansion tube 416 through the suction pipe 401 and the second one-way valve 423. At the same time, the air injected into the injection cavity 5 and the bottom of the injection molded part through the air hole 417 will enter the first bellows expansion tube 410 through the air hole 417, the second hose 420 and the fourth one-way valve 433. In this process, part of the heat at the bottom of the injection molded part will enter the first bellows expansion tube 410 together with the air, so as to achieve heat dissipation of the bottom of the injection molded part, further reduce the adhesion strength between the bottom of the injection molded part and the inner wall of the injection cavity 5, so that the bottom of the injection molded part and the injection cavity 5 can be quickly separated, and uneven force caused by the connection between part of the injection molded part and the injection cavity 5 when the injection molded part is ejected from the injection cavity 5 is prevented, thereby preventing deformation of the injection molded part during demolding.

[0035] Please refer to Figure 6 , Figure 7 The air inlet end of the third one-way valve 427 is connected to the bottom of the second corrugated expansion tube 416, the air inlet end of the fourth one-way valve 433 is connected to the second hose 420, the air inlet end of the second one-way valve 423 is connected to the suction pipe 401, and the air outlet end of the first one-way valve 422 is connected to the exhaust pipe 402.

[0036] In this embodiment, this structure is provided to allow the air inside the second bellows expansion tube 416 and the first bellows expansion tube 410 to flow in one direction. At the same time, when the second bellows expansion tube 416 and the first bellows expansion tube 410 are compressed, the air inside the second bellows expansion tube 416 enters the injection cavity 5, and the air inside the first bellows expansion tube 410 is discharged through the exhaust pipe 402, thereby improving the heat dissipation at the bottom of the injection molded part.

[0037] Please refer to Figure 8 , Fig. 9The inner side of the support frame 407 is provided with through holes that match the two ends of the bottom of the U-shaped pressure plate 409, the shift pin 412 and the center of the first rotating disk 411 are in a misaligned state, and the center of the first rotating disk 411 and the center of the second rotating disk 424 are coaxial.

[0038] In this embodiment, this structure is provided to enable the U-shaped pressure plate 409 limited by the support frame 407 to move up and down reciprocatingly when the first transfer disk 411 drives the shifting pin 412 to rotate, thereby realizing the repeated contraction and extension of the second bellows telescopic tube 416 and the first bellows telescopic tube 410.

[0039] Please refer to Figure 4 , Figure 6 , Fig. 9 , Fig.10 The intermittent support member 7 includes a first half gear 425 installed on the end of the second indexing disk 424 away from the shifting pin 412, a side connecting plate 413 is installed on the side of the support frame 407 away from the driving device 405, and the bottom of the side connecting plate 413 is rotatably connected to a first spur gear 428 through a rotating shaft, and a second spur gear 430 located above the first half gear 425 is provided on one side of the support frame 407, and a second half gear 430 located above the first spur gear 428 is installed on the end of the second spur gear 430 away from the support frame 407. Gear 431, a second transmission bevel gear 429 is installed at one end of the rotating shaft connected to the first spur gear 428 and the side connecting plate 413, a reciprocating screw 408 is provided at the bottom of the lower mold 2 and is located on the side of the side connecting plate 413 away from the support frame 407, a transmission rod 432 is installed at the bottom end of the reciprocating screw 408, and a first transmission bevel gear 414 meshing with the second transmission bevel gear 429 is installed at the bottom end of the transmission rod 432, and a guide movable plate 421 connected to the support frame plate 406 is movably sleeved on the reciprocating screw 408.

[0040] In this embodiment, when the second indexing disk 424 rotates with the operation of the driving device 405, it will drive the first half gear 425 to rotate synchronously. When the first half gear 425 is meshed with the second spur gear 430, the second spur gear 430 will rotate a certain angle with the first half gear 425, and the second half gear 431 will rotate with the second spur gear 430. When the second indexing disk 424 rotates several times, the second half gear 431 is meshed with the first spur gear 428. At this time, the first spur gear 428 will drive the second transmission bevel gear 429 to rotate a certain angle with the rotation of the second half gear 431. In this way, The second transmission bevel gear 429 drives the reciprocating screw 408 to rotate through the first transmission bevel gear 414 and the transmission rod 432. At this time, the guide movable plate 421 will drive the support frame plate 406 to move up a certain distance. In this way, the airflow can impact the connection between the bottom of the injection molded part and the injection cavity 5 for multiple times, and then the support frame plate 406 drives the top block 403 to rise a certain distance, so that the top block 403 can push the injection molded part intermittently. At the same time, when the top block 403 pushes the injection molded part, the bottom of the injection molded part and the injection cavity 5 are in a separated state, so as to prevent the injection molded part from being bent due to the excessive lifting distance of the injection molded part.

[0041] Please refer to Figure 6 , Fig. 9 A crescent pin matching the reciprocating screw rod 408 is provided on the guide movable plate 421 , and the length of the reciprocating screw rod 408 is equal to the extension length of the telescopic protective tube 404 .

[0042] In this embodiment, by providing this structure, the guide movable plate 421 moves upward or downward along the reciprocating screw 408 when the reciprocating screw 408 rotates, thereby improving the stability of the lifting block 403 on the injection molded part.

[0043] Please refer to Fig. 9 The second spur gear 430 is coaxial with the second half gear 431 , and the first half gear 425 is coaxial with the first spur gear 428 .

[0044] In this embodiment, this structure is set to enable the first half gear 425 to rotate one circle and drive the second spur gear 430 to rotate a certain angle, so that after the first half gear 425 rotates several circles, the first spur gear 428 drives the second transmission bevel gear 429 to rotate a certain angle, so that the intermittent rotation of the first spur gear 428 can be achieved, thereby achieving the slow upward movement of the guide movable plate 421.

[0045] Please refer to Fig.10 A gap is left between the first half gear 425 and the first spur gear 428 .

[0046] In the present embodiment, this structure is provided to prevent the first half gear 425 and the first spur gear 428 from interfering with each other.

[0047] Please refer to Figure 7 The sum of the internal spaces of the first bellows expansion tube 410 on both sides of the second bellows expansion tube 416 is equal to the internal space of the second bellows expansion tube 416 .

[0048] In this embodiment, this structure is provided to ensure that the air injected into and absorbed by the air holes 417 between the molded part and the injection cavity 5 is equal, thereby further improving the heat dissipation efficiency of the injection cavity 5 and the bottom of the molded part.

[0049] Please refer to Figure 7 The distance between one end of the exhaust pipe 402 and the outer wall of the mold connecting chamber 3 is greater than the distance between one end of the suction pipe 401 and the outer wall of the mold connecting chamber 3.

[0050] In this embodiment, this structure is provided to prevent the hot air exhausted from the exhaust pipe 402 from entering the second bellows expansion pipe 416 again through the intake pipe 401 .

[0051] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold for automobile injection molded parts with demoulding and anti-deformation, characterized in that: The invention comprises an upper mold (1), a lower mold (2) is installed at the bottom of the upper mold (1), a mold connecting chamber (3) is installed at the bottom of the lower mold (2), an injection cavity (5) is opened on the inner side of the lower mold (2), a support frame (407) located on the inner side of the mold connecting chamber (3) is installed at the bottom of the lower mold (2), a driving device (405) is installed at the bottom of the support frame (407), an output end of the driving device (405) is connected to a top support member (6), and the output end of the driving device (405) is connected to a top block (403) extending to the inner side of the injection cavity (5) through the top support member, and an intermittent support member (7) is installed on one side of the support frame (407); The top support member (6) includes a first rotating disk (411) installed at the output end of the driving device (405), a shifting pin (412) is installed at one end of the first rotating disk (411) away from the driving device (405), a second rotating disk (424) is installed at one end of the shifting pin (412) away from the first rotating disk (411), the second rotating disk (424) is rotatably connected to the support frame (407) via a rotating shaft, a second corrugated telescopic tube (416) located above the shifting pin (412) is installed on the inner side of the support frame (407), and a U-shaped pressure plate (416) is installed on the top of the second corrugated telescopic tube (416). 09), a first bellows telescopic tube (410) connected to the support frame (407) is installed on the inner side of the U-shaped pressing plate (409), the number of the first bellows telescopic tube (410) is two, and the two first bellows telescopic tubes (410) are symmetrically arranged along the vertical center axis of the second bellows telescopic tube (416), and straight groove connecting blocks (426) sleeved on the outside of the shifting pin rod (412) are installed at both ends of the bottom of the U-shaped pressing plate (409), and a second one-way valve (423) is installed at the bottom of the second one-way valve (423), and a suction pipe extending to the outside of the mold connection chamber (3) is installed at the bottom end of the second one-way valve (423). (401), a first one-way valve (422) is installed at the bottom end of the first bellows expansion tube (410), an exhaust pipe (402) extending to the outside of the mold connection chamber (3) is provided at the bottom end of the first one-way valve (422), a third one-way valve (427) located on one side of the second one-way valve (423) is installed at the bottom of the second bellows expansion tube (416), a support frame plate (406) located above the U-shaped pressure plate (409) is slidably connected to the support frame (407), a plurality of connecting conduits (418) are installed on the top of the support frame plate (406), and a top block (403) is installed on the top of the connecting conduit (418). The top of the support frame plate (406) is provided with a telescopic protective tube (404) located outside the connecting duct (418); the bottom of the adjacent connecting duct (418) is provided with an air guide tube (415); the bottom of the third one-way valve (427) is provided with a first hose (419) connected to the air guide tube (415); the top of the U-shaped pressing plate (409) is provided with a fourth one-way valve (433) connected to the first corrugated telescopic tube (410); the top of the fourth one-way valve (433) is provided with a second hose (420) connected to the air guide tube (415); and air holes (417) are provided around the top block (403); The inner side of the support frame (407) is provided with through holes that fit with the two ends of the bottom of the U-shaped pressure plate (409); the shifting pin (412) and the center of the first rotating disk (411) are in a misaligned state; the center of the first rotating disk (411) and the center of the second rotating disk (424) are coaxial; The intermittent support member (7) comprises a first half gear (425) mounted on an end of the second indexing disk (424) away from the shifting pin (412); a side connecting plate (413) is mounted on a side of the support frame (407) away from the driving device (405); a first spur gear (428) is rotatably connected to the bottom of the side connecting plate (413) via a rotating shaft; a second spur gear (430) located above the first half gear (425) is disposed on one side of the support frame (407); a second half gear (430) located above the first spur gear (428) is mounted on an end of the second spur gear (430) away from the support frame (407) (431), a second transmission bevel gear (429) is installed at one end of the rotating shaft connecting the first spur gear (428) and the side connecting plate (413), a reciprocating screw (408) is arranged at the bottom of the lower mold (2) and is located on the side of the side connecting plate (413) away from the support frame (407), a transmission rod (432) is installed at the bottom end of the reciprocating screw (408), and a first transmission bevel gear (414) meshing with the second transmission bevel gear (429) is installed at the bottom end of the transmission rod (432), and a guide movable plate (421) connected to the support frame plate (406) is movably sleeved on the reciprocating screw (408).

2. The automotive injection mold with mold release and anti-deformation function according to claim 1, characterized in that: The air inlet end of the third one-way valve (427) is connected to the bottom of the second corrugated telescopic tube (416), the air inlet end of the fourth one-way valve (433) is connected to the second hose (420), the air inlet end of the second one-way valve (423) is connected to the air intake pipe (401), and the air outlet end of the first one-way valve (422) is connected to the exhaust pipe (402).

3. The automotive injection mold with mold release and anti-deformation function according to claim 1, characterized in that: The guide movable plate (421) is provided with a crescent pin that matches the reciprocating screw rod (408), and the length of the reciprocating screw rod (408) is equal to the extension length of the telescopic protective tube (404).

4. The automotive injection mold with mold release and anti-deformation function according to claim 1, characterized in that: The second spur gear (430) is coaxial with the center of the second half gear (431), and the first half gear (425) is coaxial with the center of the first spur gear (428).

5. The automotive injection mold with mold release and anti-deformation function according to claim 1, characterized in that: A gap is left between the first half gear (425) and the first spur gear (428).

6. The automotive injection mold with mold release and anti-deformation function according to claim 1, characterized in that: The sum of the internal spaces of the first corrugated telescopic tube (410) on both sides of the second corrugated telescopic tube (416) is equal in size to the internal space of the second corrugated telescopic tube (416).

7. The automotive injection mold with mold release and anti-deformation function according to claim 1, characterized in that: The distance between one end of the exhaust pipe (402) and the outer wall of the mold connection chamber (3) is greater than the distance between one end of the air intake pipe (401) and the outer wall of the mold connection chamber (3).

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