CN113276367B

CN113276367B - Injection molding equipment with automatic discharging function

Info

Publication number: CN113276367B
Application number: CN202110337352.6A
Authority: CN
Inventors: 张娟
Original assignee: Shaoguan Dongzhu Industrial Co ltd
Current assignee: Shaoguan Dongzhu Industrial Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-06-21
Anticipated expiration: 2041-03-30
Also published as: CN113276367A

Abstract

The invention discloses injection molding equipment with an automatic discharging function, which comprises a bottom plate, a supporting platform, side brackets, a first vertical supporting rod, a second vertical supporting rod, a slideway plate and the like, wherein the bottom plate is provided with a first vertical supporting rod and a second vertical supporting rod; a support platform, a first vertical supporting rod, a second vertical supporting rod and a sliding track plate are fixedly mounted on the bottom plate, wherein the support platform and the sliding track plate are located on two sides of the first vertical supporting rod and the second vertical supporting rod, the first vertical supporting rod and the second vertical supporting rod are symmetrically arranged and close to the support platform, the second vertical supporting rod is close to the sliding track plate, and a side support is fixedly mounted on one side, far away from the first vertical supporting rod, of the support platform. Compared with manual demoulding, the automatic demoulding device has the advantages of good demoulding quality, high efficiency and automatic demoulding.

Description

Injection molding equipment with automatic discharging function

Technical Field

The invention relates to the field of injection molding, in particular to injection molding equipment with an automatic discharging function.

Background

Injection molding is a method for producing and molding industrial products, and is a method for manufacturing plastic products with various shapes by injecting thermoplastic plastics or thermosetting materials into a plastic molding die through injection molding equipment, wherein a plastic basin is a plastic container commonly used in our daily life at present. The plastic basin is made of general plastic, and has the performance of low manufacturing cost, durability, strong corrosion resistance, no reaction with acid and alkali and good insulator. Plastic pots are commonly used for household goods. High quality plastic products are also used in catering, medical appliances, etc. Corrosion resistant plastic pots are also used in chemical containers.

In injection molding, the mechanism for safely and undamaged ejecting the cooled and solidified plastic product and the casting system from the mold is called a mold-releasing mechanism, also called an ejector mechanism or an ejector mechanism. The safe and damage-free means that the plastic part is not deformed, damaged, stuck to the mold and white in top, and the appearance of the plastic part is not influenced by the position of the thimble. The demolding mode of the plastic basin is generally manual demolding, and a worker buckles a finished product out of the mold through fingers after the injection molding is finished, so that the efficiency is low, the quality of the finished product is influenced, and the following principle should be followed during demolding; for balanced ejection, and for the aesthetic quality of the plastic part, the ejection force must be applied to the lowermost end of the plastic part to eject the plastic part, rather than pull it out.

Therefore, it is necessary to design an injection molding apparatus with good demolding quality, high efficiency and automatic demolding.

Disclosure of Invention

In order to solve the technical defects in the prior art, the invention provides the injection molding equipment which has good demolding quality and high efficiency and can perform automatic demolding.

In order to solve the technical problem, the invention discloses injection molding equipment with an automatic discharging function, which comprises a bottom plate, a support table, side supports, a first vertical support rod, a second vertical support rod, a slideway plate, a pushing component and a shaping component, wherein the bottom plate is fixedly provided with the support table, the first vertical support rod, the second vertical support rod and the slideway plate, the support table and the slideway plate are positioned at two sides of the first vertical support rod and the second vertical support rod, the first vertical support rod is symmetrically provided with two parts which are close to the support table, the second vertical support rod is close to the slideway plate, the side supports are fixedly arranged at one side of the support table far away from the first vertical support rod, the pushing component is respectively connected with the support table and the side supports, the shaping component is fixedly connected with the bottom plate, and the shaping component is respectively connected with the second vertical support rod, the slideway plate and the pushing component.

As a preferred technical scheme, the pushing assembly comprises a U-shaped frame, a heating barrel, side sliding plates, a feeding port, a rack, a power motor, an air cylinder, an auger, a feeding assembly and a die breaking assembly, wherein the U-shaped frame is fixedly arranged on one side, far away from a bottom plate, of a supporting platform, the heating barrel is in sliding connection with the U-shaped frame through the two side sliding plates symmetrically arranged on two sides, the feeding port communicated with the interior of the heating barrel is formed in the upper portion of the heating barrel, the feeding assembly is arranged on the feeding port, the rack is arranged on the outer side wall of the heating barrel, the side, far away from the rack, of the heating barrel is provided with a discharging port, the discharging port is connected with the die breaking assembly, the power motor is arranged on the rack, a power shaft of the auger is fixedly connected with an output shaft of the power motor, the auger is arranged inside the heating barrel, the air cylinder is arranged on the side rack, and the air cylinder is fixedly connected with the rack.

As a preferred technical scheme of the invention, the injection molding equipment further comprises a heating pipe, the heating pipe is arranged in the cavity inside the U-shaped frame, and the heating pipe can continuously heat the heating barrel.

As a preferred technical scheme, the feeding assembly comprises a side frame, a first spur rack, a second U-shaped support, a first U-shaped support, a rotating shaft, a first gear, a push rod and a reciprocating device, wherein the side frame is fixedly arranged at a position, close to a rack, of the U-shaped support, the first spur rack is fixedly arranged at the upper portion of the side frame, the first U-shaped support is fixedly arranged on the side of a feeding hole, the first U-shaped support is fixedly connected with the second U-shaped support, the rotating shaft penetrates through the second U-shaped support in a rotating mode, the first gear and the reciprocating device are respectively and fixedly connected with two ends of the rotating shaft, the first gear is meshed with the first spur rack, the reciprocating device is provided with the push rod, and the push rod is connected with the first U-shaped support in a sliding mode.

As a preferred technical scheme of the invention, the reciprocating device comprises a rotary disc, a cylinder and a sliding sleeve, wherein the rotary disc is fixedly connected with one end of the rotating shaft, which is far away from the gear, the rotary disc is in rotating fit with one end of the U-shaped support, the cylinder is fixedly arranged at the position, which is far away from the circle center, of the rotary disc, the sliding sleeve is fixedly connected with the push rod, and the sliding sleeve is matched with the cylinder.

As a preferred technical scheme of the invention, the die-cutting assembly comprises a nut, a hollow screw and a connecting shaft sleeve, the hollow screw is rotatably connected with a discharge hole of the heating barrel through the connecting shaft sleeve, the nut is fixedly arranged at the upper end of the second vertical supporting rod, and the nut is in threaded fit with the hollow screw.

As a preferred technical scheme of the invention, the shaping assembly comprises a movable mould, a sliding round rod, a fixed mould, a base plate, a power rod, a pressure spring, an elliptical plate, an L-shaped rod and a connecting plate, wherein the movable mould is connected with a slideway plate in a sliding way, the movable mould is matched with a hollow screw rod in a rotating way, three corners of the movable mould are respectively and fixedly provided with the sliding round rod, the fixed mould is fixedly arranged on a bottom plate, the sliding round rod on the movable mould penetrates through the fixed mould in a sliding way, the fixed mould is matched with the movable mould in a sealing way, the discharge end of the hollow screw rod is positioned in a cavity between the fixed mould and the movable mould, the L-shaped rod is fixedly connected with the outer wall of the fixed mould, the connecting plate is fixedly connected with the L-shaped rod, the power rod penetrates through the L-shaped rod in a sliding way and is fixedly connected with the base plate at the end part, the base plate is matched with the fixed mould in a sliding way, the base plate, the fixed mould and the movable mould are matched to form a sealed cavity, the pressure spring is sleeved on the power rod, the L-shaped rod is contacted with the elliptical plate in a rotating way, one end part far away from the base plate, the center of the elliptic plate is matched with the connecting plate in a rotating way.

As a preferred technical scheme, the injection molding equipment further comprises a power round bar, a straight rack II, a fixed bar, a gear II, a gear III, a ring bar, a straight rack III, a touch connecting bar and a roller, wherein the power round bar is fixedly arranged at the other corner of the movable mold, the power round bar penetrates through the fixed mold in a sliding mode and is fixedly connected with the straight rack II, the fixed bar is fixedly connected with the outer side wall of the fixed mold, the fixed bar is connected with the straight rack II in a sliding mode, the gear II is coaxial with and fixedly connected with the gear III, a central shaft of the gear II and the gear III is rotatably connected with the fixed bar, the ring bar is fixedly connected with the outer side wall of the fixed mold, the ring bar is positioned right below the fixed bar, the straight rack III is connected with the ring bar in a sliding mode, the straight rack III is meshed with the gear III, the touch connecting bar is fixedly arranged on the side portion of the straight rack III, the end portion of the touch connecting bar is provided with the roller, and the roller is in contact with the elliptical plate.

As a preferred technical scheme, the injection molding equipment further comprises two contact blocks, two pin rods and a first spring, the two contact blocks are symmetrically arranged, the contact blocks are in sliding connection with the tracks on the U-shaped frame and are in contact with the side sliding plates, two pin rods penetrate through each first vertical supporting rod, each contact block is fixedly connected with the two adjacent pin rods, each pin rod is sleeved with the first spring, and two ends of the first spring are in contact with the first vertical supporting rod and the contact blocks respectively.

Compared with the prior art, the invention has the following advantages:

according to the invention, when the movable mold is separated from the fixed mold, the hollow screw is matched with the nut, so that the nut rotates to drive the injection molding part to rotate, the mold core and the injection molding part are fractured, meanwhile, the movable mold enables the power round rod to move, so that power is provided for the demolding structure, finally, the power rod drives the chassis to push the injection molding part away from the fixed mold through power transmission, and when the movable mold and the fixed mold are closed, the chassis and the power rod are reset relative to the movable mold under the action of the pressure spring, so that demolding of the injection molding part is completed.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic partial perspective view of the material pushing assembly according to the present invention.

FIG. 3 is a cross-sectional view of a U-shaped frame of the present invention.

Fig. 4 is a schematic perspective view of the reciprocating apparatus of the present invention.

Fig. 5 is a schematic perspective view of the cylinder of the present invention.

Fig. 6 is a schematic perspective view of the die-cutting assembly according to the present invention.

Fig. 7 is a schematic perspective view of a fixed mold and a base plate according to the present invention.

Fig. 8 is a partial perspective view of the present invention.

Fig. 9 is a schematic perspective view of the roller according to the present invention.

Fig. 10 is a schematic perspective view of a contact block, a pin rod and a first spring according to the present invention.

Wherein: 1-bottom plate, 101-supporting platform, 1011-side bracket, 102-first vertical supporting rod, 103-second vertical supporting rod, 104-slideway plate, 2-U-shaped bracket, 201-heating barrel, 2011-side sliding plate, 2012-feeding port, 202-rack, 203-power motor, 2031-cylinder, 204-auger, 3-side bracket, 301-spur rack I, 302-U-shaped bracket I, 303-U-shaped bracket II, 304-rotating shaft, 305-gear I, 306-rotating disk, 3061-cylinder, 307-sliding sleeve, 308-push rod, 4-contact block, 401-pin rod, 402-spring I, 5-nut, 501-hollow screw rod, 502-connecting shaft sleeve, 6-heating pipe, 7-movable die, 701-sliding round rod, 702-fixed die, 703-chassis, 7031-power rod, 7032-pressure spring, 7033-elliptical plate, 805-L-shaped rod, 8051-connecting plate, 8-power circular rod, 801-straight rack II, 802-fixed rod, 803-gear II, 804-gear III, 806-annular rod, 8041-straight rack III, 8042-touch connecting rod and 8043-roller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an injection molding device with an automatic discharging function comprises a bottom plate 1, a supporting platform 101, a side support 1011, a first vertical support rod 102, a second vertical support rod 103, a chute plate 104, a pushing component and a shaping component, wherein the supporting platform 101, the first vertical support rod 102, the second vertical support rod 103 and the chute plate 104 are fixedly installed on the upper side of the bottom plate 1, the supporting platform 101 and the chute plate 104 are located on the left side and the right side of the first vertical support rod 102 and the second vertical support rod 103, the first vertical support rod 102 is symmetrically provided with two front and back parts, the two parts are located on the left side of the supporting platform 101, the second vertical support rod 103 is located on the right side of the chute plate 104, the side support 1011 is fixedly installed on the right side of the supporting platform 101, the pushing component is respectively connected with the supporting platform 101 and the side support 1011, the shaping component is fixedly connected with the bottom plate 1, and the shaping component is respectively connected with the second vertical support rod 103, the chute plate 104 and the pushing component.

As shown in fig. 1-3, the material pushing assembly comprises a U-shaped frame 2, a heating barrel 201, a side sliding plate 2011, a material inlet 2012 and a machine frame 202, power motor 203, cylinder 2031, auger 204, material loading subassembly and disconnected mould subassembly, U type frame 2 fixed mounting is at the upside of a platform 101, two side slides 2011 and U type frame 2 sliding connection that heating barrel 201 set up through bilateral symmetry around, the upper right portion of heating barrel 201 is equipped with the feed inlet 2012 rather than inside intercommunication, install the material loading subassembly on feed inlet 2012, rack 202 installs on the right side wall of heating barrel 201, the left side of heating barrel 201 is equipped with the discharge gate, the discharge gate is connected with disconnected mould subassembly, power motor 203 installs on rack 202, the power shaft and the power motor 203 output shaft fixed connection of auger 204, auger 204 is located inside heating barrel 201, cylinder 2031 installs on side support 1011 upper portion, cylinder 2031 and rack 202 fixed connection.

As shown in fig. 3, the injection molding apparatus further includes a heating pipe 6, the heating pipe 6 is disposed in the cavity inside the U-shaped frame 2, and the heating pipe 6 can continuously heat the heating barrel 201.

As shown in fig. 2 and 4, the feeding assembly comprises a side frame 3, a first spur rack 301, a second U-shaped support 303, a first U-shaped support 302, a rotating shaft 304, a first gear 305, a push rod 308 and a reciprocating device, wherein the side frame 3 is fixedly arranged at the right rear side of the first U-shaped support 2, the first spur rack 301 is fixedly arranged at the upper part of the side frame 3, the first U-shaped support 302 is fixedly arranged at the side of the feed port 2012, the first U-shaped support 302 is fixedly connected with the second U-shaped support 303, the rotating shaft 304 rotatably penetrates through the second U-shaped support 303, the first gear 305 and the reciprocating device are respectively fixedly connected with two ends of the rotating shaft 304, the first gear 305 is meshed with the first spur rack 301, the push rod 308 is arranged on the reciprocating device, and the push rod 308 is slidably connected with the first U-shaped support 302.

As shown in fig. 4-5, the reciprocating device includes a rotating disc 306, a cylindrical post 3061 and a sliding sleeve 307, the rotating disc 306 is fixedly connected with the front end of the rotating shaft 304, the rotating disc 306 is rotatably matched with the first U-shaped bracket 302, the cylindrical post 3061 is fixedly arranged at a position far away from the center of the circle on the rotating disc 306, the sliding sleeve 307 is fixedly connected with the push rod 308, and the sliding sleeve 307 is matched with the cylindrical post 3061.

As shown in fig. 6, the die-cutting assembly includes a nut 5, a hollow screw 501 and a coupling sleeve 502, the hollow screw 501 is rotatably connected with the left side of the discharge port of the heating barrel 201 through the coupling sleeve 502, the nut 5 is fixedly mounted at the upper end of the second vertical support rod 103, and the nut 5 is in threaded fit with the hollow screw 501.

As shown in fig. 6-8, the shaping assembly comprises a moving mold 7, a sliding round rod 701, a fixed mold 702, a chassis 703, a power rod 7031, a pressure spring 7032, an elliptical plate 7033, an L-shaped rod 805 and a connecting plate 8051, wherein the moving mold 7 is slidably connected with the upper side of the chute plate 104, the moving mold 7 is rotatably matched with the hollow screw 501, one sliding round rod 701 is fixedly installed at each of three corners of the moving mold 7, the fixed mold 702 is fixedly installed at the left upper side of the bottom plate 1, the sliding round rod 701 on the moving mold 7 slides through the fixed mold 702, the fixed mold 702 is in sealing fit with the moving mold 7, the left end of the hollow screw 501 is positioned in a cavity between the fixed mold 702 and the moving mold 7, the L-shaped rod 805 is fixedly connected with the left outer wall of the fixed mold 702, the connecting plate 8051 is fixedly connected with the L-shaped rod 805, the connecting plate 7031 slides through the L-shaped rod 805 and is fixedly connected with the chassis 703 at the right end, the chassis 703 is slidably matched with the fixed mold 702, the chassis 703 is in sliding fit with the fixed mold 702, the chassis 703 and the moving mold 7 are matched with a sealed cavity formed by matching, the pressure spring 7032 is sleeved on the power rod 7031, the pressure spring 7032 is in contact with the L-shaped rod 805, the right end of the power rod 7031 is rotatably and slidably connected with an elliptical plate 7033, and the center of the elliptical plate 7033 is in rotating fit with the connecting plate 8051.

As shown in fig. 7-9, the injection molding apparatus further comprises a power round bar 8, a second spur rack 801, a fixed bar 802, a second gear 803, a third gear 804, a ring bar 806, a third spur rack 8041, a touch connecting bar 8042 and a roller 8043, the power round bar 8 is fixedly installed at one corner of the rear upper portion of the movable mold 7, the power round bar 8 slides leftwards to penetrate through the fixed mold 702 and is fixedly connected with the second spur rack 801, the right end of the fixed bar 802 is fixedly connected with the left side wall of the fixed mold 702, the fixed bar 802 is slidably connected with the second spur rack 801, the second gear 803 is coaxial with and fixedly connected with the third gear 804, the second gear 803 is rotatably connected with the central shaft of the third gear 804 and the fixed bar 802, the ring bar 806 is fixedly connected with the left side wall of the fixed mold 702, the ring bar 806 is positioned right below the fixed bar 802, the third spur rack 8041 is slidably connected with the upper side of the ring bar 806, the third spur rack 8041 is engaged with the third gear 804, the touch connecting bar 8042 is fixedly installed at the front portion of the third spur rack 8041, the left end of the touch connecting rod 8042 is provided with a roller 8043, and the roller 8043 is in contact with the elliptical plate 7033.

As shown in fig. 10, the injection molding device further includes two contact blocks 4, two pin rods 401 and two springs, the two contact blocks 4 are symmetrically arranged in front and back, the contact blocks 4 are slidably connected with the rails on the U-shaped frame 2, the contact blocks 4 are in contact with the side sliding plate 2011, the two pin rods 401 are arranged on the upper portion of each first vertical support rod 102 in a penetrating mode, each contact block 4 is fixedly connected with the two adjacent pin rods 401, each pin rod 401 is sleeved with one spring 402, and two ends of each spring 402 are respectively in contact with the first vertical support rod 102 and the contact block 4.

The working principle is as follows:

before the injection molding equipment works, a worker needs to electrify the heating pipe 6, after the heating pipe 6 is preheated, plastic raw materials can be added into the heating barrel 201 through the feeding hole 2012, the cylinder 2031 is started after plastics in the heating barrel 201 are completely melted, the cylinder 2031 can drive the whole pushing material assembly to move towards the molding assembly, the feeding hole 2012 can drive the U-shaped bracket II 303 to move, the U-shaped bracket II 303 can drive the rotating shaft 304 and the gear I305 to move, therefore, when the whole pushing material assembly moves, the gear I305 can rotate through the matching with the straight rack I301, the rotating shaft 304 and the turntable 306 can be driven to rotate, when the turntable 306 rotates, the sliding sleeve 307 and the push rod 308 can be driven to reciprocate up and down, so that the plastic raw materials in the feeding hole 2012 can be filled into the heating barrel 201, and the raw materials can be prevented from being clamped at the feeding hole 2012, when the cylinder 2031 drives the pushing material assembly to be conveyed to the leftmost end, the movable mold 7 is in sealing fit with the fixed mold 702, the side sliding plate 2011 can be in buffering effect by touching with the contact block 4, meanwhile, the power motor 203 is turned on, then the power motor 203 drives the packing auger 204 to rotate, so that plastic raw materials melted in the heating barrel 201 can be continuously conveyed into a mold cavity through the hollow screw 501, the power motor 203 is turned off after injection is completed, then, a mold needs to be waited for cooling and molding, and thus, molding action of the mold is completed.

Then the air cylinder 2031 drives the whole pushing material assembly to return, and simultaneously the hollow screw 501 is matched with the screw thread of the nut 5 when returning, thus the connecting point of the plastic raw material in the hollow screw 501 and the model is rotationally broken, and at this time, the injection molded finished product is attached to the fixed mold 702, when the hollow screw 501 drives the movable mold 7 to move rightwards, the movable mold 7 drives the straight rack two 801 to move together through the power circular rod 8, thus the gear three 804 is driven to rotate through the matching of the straight rack two 801 and the gear two 803, when the gear three 804 rotates, the touch connecting rod 8042 is driven to move leftwards through the matching with the straight rack three 8041, when the roller 8043 on the touch connecting rod 8042 touches the elliptical plate 7033, the elliptical plate 7033 is driven to rotate along the central axis, thus the power rod 7031 is pushed to move rightwards through the elliptical plate 7033, and the chassis 703 is driven to move rightwards, and when the chassis 703 moves, the injection molded part on the mold is pushed away, this completes the final demolding.

The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.

Claims

1. An injection molding device with an automatic discharging function comprises a bottom plate (1), a supporting platform (101), side supports (1011), a first vertical support rod (102), a second vertical support rod (103) and a slide way plate (104), wherein the supporting platform (101), the first vertical support rod (102), the second vertical support rod (103) and the slide way plate (104) are fixedly installed on the bottom plate (1), the supporting platform (101) and the slide way plate (104) are positioned at two sides of the first vertical support rod (102) and the second vertical support rod (103), the first vertical support rod (102) is symmetrically provided with two supporting platforms (101), the second vertical support rod (103) is abutted against the slide way plate (104), the side supports (1011) are fixedly installed at one side of the supporting platform (101) far away from the first vertical support rod (102), the injection molding device is characterized by further comprising a pushing and feeding assembly and a shaping assembly, the pushing and the feeding assembly is respectively connected with the supporting platform (101) and the side supports (1011), the shaping component is fixedly connected with the bottom plate (1), and the shaping component is respectively connected with the second vertical supporting rod (103), the slideway plate (104) and the pushing component;

the pushing and feeding assembly comprises a U-shaped frame (2), a heating barrel (201), side sliding plates (2011), a feeding port (2012), a rack (202), a power motor (203), a cylinder (2031), an auger (204), a feeding assembly and a die breaking assembly, wherein the U-shaped frame (2) is fixedly installed on one side, away from the bottom plate (1), of the supporting platform (101), the heating barrel (201) is in sliding connection with the U-shaped frame (2) through the two side sliding plates (2011) symmetrically arranged on two sides, the upper part of the heating barrel (201) is provided with the feeding port (2012) communicated with the interior of the heating barrel, the feeding port (2012) is provided with the feeding assembly, the rack (202) is installed on the outer side wall of the heating barrel (201), the side, away from the rack (202), of the heating barrel (201) is provided with the discharging port, the discharging port is connected with the die breaking assembly, the power motor (203) is installed on the rack (202), a power shaft of the auger (204) is fixedly connected with an output shaft of the power motor (203), the packing auger (204) is arranged inside the heating barrel (201), the cylinder (2031) is arranged on the side bracket (1011), and the cylinder (2031) is fixedly connected with the rack (202);

the feeding assembly comprises a side frame (3), a first spur rack (301), a second U-shaped support (303), a first U-shaped support (302), a rotating shaft (304), a first gear (305), a push rod (308) and a reciprocating device, wherein the side frame (3) is fixedly installed at a position, close to the rack (202), of the U-shaped frame (2), the first spur rack (301) is fixedly installed at the upper portion of the side frame (3), the first U-shaped support (302) is fixedly installed at the side of the feeding port (2012), the first U-shaped support (302) is fixedly connected with the second U-shaped support (303), the rotating shaft (304) rotates to penetrate through the second U-shaped support (303), the first gear (305) and the reciprocating device are fixedly connected with two ends of the rotating shaft (304) respectively, the first gear (305) is meshed with the first spur rack (301), the push rod (308) is installed on the reciprocating device, and the push rod (308) is connected with the first U-shaped support (302) in a sliding mode.

2. The injection molding device with the automatic discharging function according to claim 1, wherein the injection molding device further comprises a heating pipe (6), the heating pipe (6) is arranged in the cavity inside the U-shaped frame (2), and the heating pipe (6) can continuously heat the heating barrel (201).

3. The injection molding device with the automatic discharging function according to claim 1, wherein the reciprocating device comprises a rotating disc (306), a cylinder (3061) and a sliding sleeve (307), the rotating disc (306) is fixedly connected with one end, away from the first gear (305), of the rotating shaft (304), the rotating disc (306) is in rotating fit with the first U-shaped bracket (302), the cylinder (3061) is fixedly installed at a position, away from the center of a circle, of the rotating disc (306), the sliding sleeve (307) is fixedly connected with the push rod (308), and the sliding sleeve (307) is matched with the cylinder (3061).

4. The injection molding device with the automatic discharging function according to claim 1, wherein the die-cutting assembly comprises a nut (5), a hollow screw (501) and a connecting shaft sleeve (502), the hollow screw (501) is rotatably connected with a discharging port of the heating barrel (201) through the connecting shaft sleeve (502), the nut (5) is fixedly installed at the upper end of the second vertical supporting rod (103), and the nut (5) is in threaded fit with the hollow screw (501).

5. The injection molding device with the automatic discharging function according to claim 1, wherein the molding assembly comprises a movable mold (7), a sliding round rod (701), a fixed mold (702), a chassis (703), a power rod (7031), a pressure spring (7032), an elliptical plate (7033), an L-shaped rod (805) and a connecting plate (8051), the movable mold (7) is connected with the sliding track plate (104) in a sliding manner, the movable mold (7) is matched with the hollow screw (501) in a rotating manner, the sliding round rods (701) are fixedly arranged on three corners of the movable mold (7), the fixed mold (702) is fixedly arranged on the bottom plate (1), the sliding round rod (701) on the movable mold (7) penetrates through the fixed mold (702) in a sliding manner, the fixed mold (702) is matched with the movable mold (7) in a sealing manner, the discharging end of the hollow screw (501) is positioned in a cavity between the fixed mold (702) and the movable mold (7), and the L-shaped rod (805) is fixedly connected with the outer wall of the fixed mold (702), the connecting plate (8051) is fixedly connected with the L-shaped rod (805), the power rod (7031) penetrates through the L-shaped rod (805) in a sliding mode and is fixedly connected with a chassis (703) at the end portion, the chassis (703) is in sliding fit with the fixed die (702), the chassis (703), the fixed die (702) and the movable die (7) are matched to form a sealed cavity, the power rod (7031) is sleeved with a pressure spring (7032), the pressure spring (7032) is in contact with the L-shaped rod (805), one end, far away from the chassis (703), of the power rod (7031) is rotatably and slidably connected with an elliptical plate (7033), and the center of the elliptical plate (7033) is in rotating fit with the connecting plate (8051).

6. The injection molding device with the automatic discharging function as claimed in claim 1, wherein the injection molding device further comprises a power round bar (8), a spur rack II (801), a fixed bar (802), a gear II (803), a gear III (804), a ring bar (806), a spur rack III (8041), a touch connecting bar (8042) and a roller (8043), the power round bar (8) is fixedly installed at the other corner of the movable mold (7), the power round bar (8) penetrates through the fixed mold (702) in a sliding manner and is fixedly connected with the spur rack II (801), the fixed bar (802) is fixedly connected with the outer side wall of the fixed mold (702), the fixed bar (802) is slidably connected with the spur rack II (801), the gear II (803) is coaxial and fixedly connected with the gear III (804), the central axis of the gear II (803) and the gear III (804) is rotatably connected with the fixed bar (802), the ring bar (806) is fixedly connected with the outer side wall of the fixed mold (702), the annular rod (806) is located right below the fixing rod (802), the straight rack III (8041) is connected with the annular rod (806) in a sliding mode, the straight rack III (8041) is meshed with the gear III (804), the touch connecting rod (8042) is fixedly installed on the side portion of the straight rack III (8041), a roller (8043) is arranged at the end portion of the touch connecting rod (8042), and the roller (8043) is in contact with the elliptical plate (7033).

7. The injection molding device with the automatic discharging function according to claim 6, wherein the injection molding device further comprises two contact blocks (4), two pin rods (401) and a first spring (402), the two contact blocks (4) are symmetrically arranged, the contact blocks (4) are slidably connected with a rail on the U-shaped frame (2), the contact blocks (4) touch the side sliding plate (2011), two pin rods (401) penetrate through each first vertical support rod (102), each contact block (4) is fixedly connected with two adjacent pin rods (401), each pin rod (401) is sleeved with a first spring (402), and two ends of each first spring (402) are respectively in contact with the first vertical support rod (102) and the contact blocks (4).