A material unloading device and method for injection molding machine

Abstract

The present invention discloses a material unloading device and method for an injection molding machine, belonging to the field of injection molding technology. A material unloading device for an injection molding machine includes a frame, and also includes: a support plate, fixedly mounted on the frame, wherein the support plate is connected to a rotating shaft by rotation, a disc is fixedly mounted on the rotating shaft, and a driving part for driving the disc to rotate intermittently is provided on the support plate; multiple groups of mold assemblies, circumferentially distributed on the outer wall of the disc, wherein the mold assembly includes two rotating rods rotatably connected to the disc, and injection molds are installed on the two rotating rods, and the two groups of injection molds cooperate with each other, and a linkage part for driving the two rotating rods to rotate is provided on the disc, and when the mold assembly is set downward, the two injection molds are away from each other; the present invention can automatically complete the unloading of workpieces, thereby improving the processing efficiency of the injection molding machine.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, and in particular to a material unloading device and method for an injection molding machine. Background Art

[0002] Waste plastics refer to plastic products that have been used or are no longer needed. These products may include but are not limited to plastic bottles, packaging materials, plastic bags, toys, electrical appliance casings, etc. The treatment of waste plastics is a global environmental problem, so in the existing technology, they are often recycled and reused.

[0003] In the recycling of waste plastics, the recycled plastics will be melted again and injection molded into plastic products. However, in the use of existing injection molding machines, it is found that the unloading work of the injection molding machine often requires manual assistance. This is mainly because some plastic parts are easily stuck in the mold, so manual operation is required to complete the unloading, which will affect the production efficiency of the injection molding machine. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the injection molding machine is inconvenient for unloading materials, and to propose an unloading device and method for the injection molding machine.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A material unloading device for an injection molding machine comprises a frame, and also comprises: a support plate fixedly mounted on the frame, wherein the support plate is connected to a rotating shaft by rotation, a disc is fixedly mounted on the rotating shaft, and a driving part for driving the disc to rotate intermittently is provided on the support plate; multiple groups of mold assemblies are circumferentially distributed on the outer wall of the disc, wherein the mold assembly comprises two rotating rods rotatably connected to the disc, injection molds are mounted on the two rotating rods, the two groups of injection molds cooperate with each other, and a linkage part for driving the two rotating rods to rotate is provided on the disc, and when the mold assembly is set downward, the two injection molds are away from each other.

[0007] In order to facilitate the intermittent rotation of the driving disc, preferably, the driving part includes a driving motor fixedly mounted on the support plate, and the output shaft of the driving motor is fixedly mounted with an incomplete gear, wherein a driven gear meshing with the incomplete gear is rotatably mounted on the support plate, and the driven gear is connected to the rotating shaft through a worm gear.

[0008] In order to enable the two mating injection molds to open and close automatically, preferably, the linkage part includes a transmission gear fixedly mounted on two rotating rods, and the two transmission gears are meshed and connected with each other, wherein a driving gear is fixedly mounted on one of the rotating rods, and a first rack and a second rack are fixedly connected on the support plate, and when the injection mold moves to a downward setting, the driving gear will mesh with the first rack, and when the injection mold moves upward, the driving gear will mesh with the second rack.

[0009] In order to make the injection mold vibrate, preferably, a slide groove is provided on the injection mold, a slide plate is slidably connected in the slide groove, the rotating rod is fixedly connected to the slide plate, the slide plate and the inner wall of the slide groove are elastically connected by a first spring, and a shaking part for driving the injection mold to vibrate reciprocally is provided on the disc.

[0010] In order to make the injection mold vibrate, the shaking part further includes a roller rotatably mounted on the injection mold, an arc plate is fixedly connected to the outer wall of the disc, and protrusions arranged at equal intervals are fixedly connected to the arc plate. When the two injection molds move away from each other, the injection molds will drive the roller to roll along the arc plate.

[0011] In order to be able to blow air into the injection mold, preferably, the outer wall of the injection mold is fixedly connected to a sliding rod, a slider is slidably connected to the sliding rod, a nozzle is installed on the slider, and a nozzle facing the injection mold is fixedly installed on the nozzle, wherein the injection mold is provided with a pushing part that drives the slider to slide along the sliding rod, and when the two injection molds move away from each other, the nozzle slides toward the opening direction of the injection mold.

[0012] In order to automatically move the nozzle to the opening top of the injection mold, the pushing part further includes a threaded rod rotatably mounted on the injection mold, the slider is threadedly connected to the threaded rod, a passive gear is fixedly mounted on one end of the threaded rod, and a third rack matching the passive gear is fixedly mounted on the disc.

[0013] In order to prevent two adjacent nozzles from interfering with each other, further, a sliding hole is provided on the slider, a sliding column is slidably connected in the sliding hole, the sliding column and the inner wall of the sliding hole are elastically connected by a second spring, and a guiding slope facing the edge of the injection mold is provided at the end of the nozzle, and the nozzle is fixedly connected to the sliding column.

[0014] In order to automatically supply air to the nozzle, further, the outer wall of the injection mold is fixedly connected with an air intake pipe and an exhaust pipe connected to the slide groove, and a one-way valve is fixedly installed in the air intake pipe and the exhaust pipe, and the end of the exhaust pipe is fixedly connected and connected to the nozzle.

[0015] A method for unloading an injection molding machine, the operating steps are as follows:

[0016] Step 1: Set the injection mold downward;

[0017] Step 2: Separate a pair of downwardly disposed injection molds into an inverted V shape;

[0018] Step 3: Make the separated injection molds reciprocate and shake;

[0019] Step 4: Blowing a fluctuating air pressure air flow into the injection mold;

[0020] Step 5: Close and reset the separated pair of injection molds.

[0021] Compared with the prior art, the present invention provides a material unloading device for an injection molding machine, which has the following beneficial effects:

[0022] 1. The unloading device of the injection molding machine drives the driving gear to rotate through the first rack, and the two rotating rods drive the two injection molds to rotate, and make the two injection molds appear on the disc in an inverted V shape, so that the injection molded parts in the injection mold will automatically fall down to automatically complete the unloading of the workpiece, thereby improving the processing efficiency of the injection molding machine.

[0023] 2. The unloading device of the injection molding machine drives the roller to roll along the arc plate. The roller will pass through a plurality of equally spaced bumps in sequence, and the injection mold will vibrate back and forth, thereby improving the demoulding efficiency of the injection molded parts in the injection mold, thereby indirectly improving the unloading efficiency of the injection molding machine.

[0024] 3. The unloading device of the injection molding machine drives the passive gear to sweep across the third rack, and the threaded rod drives the slider to slide toward the injection mold, thereby driving the nozzle to move to the opening top of the injection mold. At this time, the air is blown into the injection mold through the nozzle on the nozzle, which can further improve the demolding efficiency of the injection mold.

[0025] 4. The unloading equipment of the injection molding machine will intermittently generate positive and negative pressures in the slide when the injection mold reciprocates. When the pressure is positive, air will be blown to the nozzle through the exhaust pipe. Therefore, the reciprocatingly shaking injection mold will cause the nozzle to blow air indirectly, and the moving airflow will make the demoulding efficiency of the injection mold higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the axonometric structure of a material unloading device for an injection molding machine proposed by the present invention from a first perspective;

[0027] Figure 2 A schematic diagram of the axonometric structure of a blanking device for an injection molding machine proposed by the present invention from a second viewing angle;

[0028] Figure 3This is a schematic diagram of the axonometric structure of a disc of a material discharge device of an injection molding machine proposed by the present invention from a first-view perspective;

[0029] Figure 4 A schematic diagram of the axonometric structure of a disc of a material discharge device of an injection molding machine proposed by the present invention from a second viewing angle;

[0030] Figure 5 Schematic diagram of the axonometric structure of an injection mold of a material discharge device of an injection molding machine proposed by the present invention Figure 1 ;

[0031] Figure 6 Schematic diagram of the axonometric structure of an injection mold of a material discharge device of an injection molding machine proposed by the present invention Figure 2 ;

[0032] Figure 7 A schematic diagram of a partial axonometric structure of an injection mold of a material discharge device of an injection molding machine proposed by the present invention;

[0033] Figure 8 The present invention is a schematic diagram of the axonometric structure of a nozzle of a material discharge device of an injection molding machine.

[0034] In the figure: 1, frame; 2, support plate; 3, rotating shaft; 4, disc; 5, injection mold; 6, rotating rod; 7, transmission gear; 8, first rack; 9, second rack; 10, slide groove; 11, slide plate; 12, driving gear; 13, first spring; 14, roller; 15, arc plate; 16, bump; 17, nozzle; 18, threaded rod; 19, slide rod; 20, slider; 21, passive gear; 22, third rack; 23, slide column; 24, slide hole; 25, nozzle; 26, suction pipe; 27, exhaust pipe; 28, driving motor; 29, incomplete gear; 30, driven gear; 31, worm gear; 32, conveyor belt; 33, rubber rod; 34, air vent; 35, wind hood; 36, guide slope; 37, exhaust end. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation on the present invention.

[0037] Embodiment 1:

[0038] Reference Figure 1-Figure 8 , a material unloading device for an injection molding machine, comprising a frame 1, and also comprising: a support plate 2, which is fixedly mounted on the frame 1, wherein the support plate 2 is connected to a rotating shaft 3 by rotation, a disc 4 is fixedly mounted on the rotating shaft 3, and a driving part for driving the disc 4 to rotate intermittently is provided on the support plate 2, and the driving part comprises a driving motor 28 fixedly mounted on the support plate 2, and an incomplete gear 29 is fixedly mounted on the output shaft of the driving motor 28, and the gear teeth of the incomplete gear 29 are only half, wherein the support plate 2 is rotatably mounted with the incomplete gear 29. The gear 29 is meshed with a driven gear 30, and the driven gear 30 is connected to the rotating shaft 3 through a worm gear 31; multiple groups of mold assemblies are circumferentially distributed on the outer wall of the disc 4, wherein the mold assembly includes two rotating rods 6 rotatably connected to the disc 4, and injection molds 5 are installed on the two rotating rods 6. The two groups of injection molds 5 cooperate with each other to complete the injection molding of the injection molded parts. A linkage part that drives the two rotating rods 6 to rotate is provided on the disc 4. When the mold assembly is set downward, the two injection molds 5 are away from each other.

[0039] When in use, start the drive motor 28, the drive motor 28 will drive the incomplete gear 29 to rotate, and the incomplete gear 29 will drive the driven gear 30 to rotate intermittently, so that the driven gear 30 can drive the disc 4 to rotate intermittently through the rotating shaft 3, and the disc 4 will drive multiple groups of injection molds 5 to intermittently revolve around its axis, so as to achieve the purpose of intermittent position exchange. When the injection mold 5 is set upward, that is, when the injection mold 5 moves to the top of the support plate 2, the injection molding of the plastic is completed. When the injection mold 5 moves to the bottom of the support plate 2, the linkage part will make the two injection molds 5 appear on the disc 4 in an inverted V shape, so that the injection molded parts in the injection mold 5 will automatically fall downward to automatically complete the unloading of the workpiece, thereby improving the processing efficiency of the injection molding machine. During this period, the injection mold 5 close to the top of the support plate 2 can also complete the injection molding work, thereby further improving the injection molding efficiency of the injection molding machine.

[0040] Embodiment 2:

[0041] Reference Figure 1-Figure 6 , which is basically the same as the first embodiment, and further discloses a specific implementation plan of the linkage part.

[0042] The linkage part includes a transmission gear 7 fixedly mounted on two rotating rods 6, and the two transmission gears 7 are meshed with each other, wherein a driving gear 12 is fixedly mounted on one of the rotating rods 6, and a first rack 8 and a second rack 9 are fixedly connected to the support plate 2, and the first rack 8 and the second rack 9 are both arc-shaped. When the injection mold 5 moves to a downward setting, the driving gear 12 will mesh with the first rack 8, and when the injection mold 5 moves upward, the driving gear 12 will mesh with the second rack 9.

[0043] When the injection mold 5 is set upward, that is, when the injection mold 5 moves to the top of the support plate 2, the injection molding of the plastic is completed. When the injection mold 5 moves to the bottom of the support plate 2, the rotating disc 4 will drive the active gear 12 to first sweep across the first rack 8, and the first rack 8 will drive the active gear 12 to rotate, and under the action of the two transmission gears 7, the two rotating rods 6 will be driven to rotate, and the rotation directions are opposite, and the two rotating rods 6 will drive the two injection molds 5 to rotate, and make the two injection molds 5 appear on the disc 4 in an inverted V shape, so that the injection molded parts in the injection mold 5 will automatically fall downward to automatically complete the unloading of the workpiece, thereby improving the processing efficiency of the injection molding machine. During this period, the injection mold 5 close to the top of the support plate 2 can also complete the injection molding work, thereby further improving the injection molding efficiency of the injection molding machine.

[0044] When the injection mold 5 moves toward the top of the support plate 2 again, the rotating disc 4 will drive the driving gear 12 to sweep across the second rack 9 again, and the second rack 9 will drive the driving gear 12 to reverse and reset, thereby driving the two rotating rods 6 to reverse and reset, and then automatically drive the two injection molds 5 to merge again, so as to complete the subsequent injection molding work, thereby ensuring the continuity of the injection molding machine's operation.

[0045] Embodiment three:

[0046] Reference Figure 3-Figure 7 , which is basically the same as the second embodiment, and further, a specific implementation scheme for causing the injection mold 5 to vibrate is specifically added.

[0047] The above-mentioned injection mold 5 is provided with a slide groove 10, and a slide plate 11 is slidably connected in the slide groove 10. The rotating rod 6 is fixedly connected to the slide plate 11. The slide plate 11 is elastically connected to the inner wall of the slide groove 10 by a first spring 13. The disc 4 is provided with a shaking part for driving the injection mold 5 to shake back and forth; the shaking part includes a roller 14 rotatably mounted on the injection mold 5, an arc plate 15 is fixedly connected to the outer wall of the disc 4, and protrusions 16 arranged at equal intervals are fixedly connected to the arc plate 15. The shape of the protrusion 16 is semicircular, and the number of the protrusions 16 is 6-9. The preferred number in this application is 6. When the two injection molds 5 move away from each other, the injection mold 5 will drive the roller 14 to roll along the arc plate 15.

[0048] Specifically, when the rotating rod 6 drives the injection mold 5 to swing, the injection mold 5 will drive the roller 14 to roll along the arc plate 15, and the roller 14 will pass through a plurality of equally spaced protrusions 16 in turn. When the roller 14 presses on the protrusion 16, the protrusion 16 will press the roller 14, so that the roller 14 drives the injection mold 5 to slide in the direction away from the slide plate 11. When the roller 14 passes over the protrusion 16, the first spring 13 will drive the injection mold 5 to slide in the opposite direction and reset. Therefore, when the roller 14 passes through a plurality of protrusions 16, the injection mold 5 will shake back and forth, thereby improving the demolding efficiency of the injection molded parts in the injection mold 5, thereby indirectly improving the unloading efficiency of the injection molding machine. When the two injection molds 5 are being molded, the injection mold 5 will shake again, thereby shaking off the residual debris inside it, thereby ensuring the subsequent injection molding quality.

[0049] Embodiment 4:

[0050] Reference Figure 3-Figure 8 , which is basically the same as the third embodiment, and further, a specific implementation scheme of blowing air into the injection mold 5 is specifically added.

[0051] The outer wall of the above-mentioned injection mold 5 is fixedly connected with a slide bar 19, and a slider 20 is slidably connected to the slide bar 19. A nozzle 17 is installed on the slider 20, and a nozzle 25 facing the injection mold 5 is fixedly installed on the nozzle 17. The nozzle 25 is used to spray air. The injection mold 5 is provided with a pushing part that drives the slider 20 to slide along the slide bar 19. When the two injection molds 5 move away from each other, the nozzle 17 slides toward the opening direction of the injection mold 5. The pushing part includes a threaded rod 18 rotatably installed on the injection mold 5, and the slider 20 is threadedly connected to the threaded rod 18. A passive gear 21 is fixedly installed at one end of the threaded rod 18, and a third rack 22 that cooperates with the passive gear 21 is fixedly installed on the disc 4.

[0052] When the rotating rod 6 drives the injection mold 5 to swing, and before the injection mold 5 shakes, it will also drive the passive gear 21 to sweep across the third rack 22, and the passive gear 21 will drive the threaded rod 18 to rotate, and the threaded rod 18 will drive the slider 20 to slide in the direction of the injection mold 5, thereby driving the nozzle 17 to move to the opening top of the injection mold 5. At this time, air is blown into the injection mold 5 through the nozzle 25 on the nozzle 17, which can further improve the demolding efficiency of the injection mold 5; and when the injection mold 5 moves in the opposite direction to reset, the passive gear 21 will drive the threaded rod 18 to reverse and reset, so that the nozzle 17 is away from the opening top of the injection mold 5.

[0053] The slider 20 is provided with a sliding hole 24, in which a sliding column 23 is slidably connected. The sliding column 23 is elastically connected to the inner wall of the sliding hole 24 via a second spring, which is not shown in the figure. The end of the nozzle 17 is provided with a guiding inclined surface 36 facing the edge of the injection mold 5, and the nozzle 17 is fixedly connected to the sliding column 23.

[0054] Specifically, before the nozzle 17 moves toward the injection mold 5, the nozzle 17 is flush with the end face of the injection mold 5. When the nozzle 17 moves toward the injection mold 5, the guide slope 36 will slide along the edge of the injection mold 5, so that the nozzle 17 moves to the open end face of the injection mold 5. At this time, the nozzle 17 will drive the slide column 23 to slide in the slide hole 24 in the direction away from the second spring. When the nozzle 17 is reset, the second spring will drive the nozzle 17 to move in the opposite direction and reset. Therefore, after the two injection molds 5 are closed, the two nozzles 17 will not interfere with each other.

[0055] The outer wall of the injection mold 5 is fixedly connected with an air intake pipe 26 and an air exhaust pipe 27 which are connected with the slide groove 10 . Both the air intake pipe 26 and the air exhaust pipe 27 are fixedly installed with a one-way valve. The end of the air exhaust pipe 27 is fixedly connected with and connected with the nozzle 17 .

[0056] Specifically, when the injection mold 5 vibrates back and forth, positive pressure and negative pressure will be intermittently generated in the slide groove 10. When there is positive pressure, air will be blown to the nozzle 17 through the exhaust pipe 27, and when there is negative pressure, air will be sucked in through the suction pipe 26. Therefore, the reciprocatingly vibrating injection mold 5 will cause the nozzle 25 to blow air indirectly, and the moving airflow will make the demolding efficiency of the injection mold 5 higher.

[0057] Embodiment five:

[0058] Reference Figure 1-Figure 2 , which is basically the same as the fourth embodiment, and further, a specific implementation plan for conveying and dissipating heat of the injection molded parts is specifically added.

[0059] A conveyor belt 32 is fixedly mounted on the frame 1, and rubber rods 33 arranged at equal intervals are fixedly connected to the outer wall of the conveyor belt 32, and ventilation holes 34 are provided on the surface of the conveyor belt 32. A wind hood 35 is fixedly mounted on the frame 1, and a fan is fixedly mounted inside the wind hood 35, and the exhaust end 37 of the wind hood 35 faces between the upper end of the conveyor belt 32 and the bottom of the support plate 2.

[0060] Specifically, when in use, the injection molded parts falling from the injection mold 5 will fall onto the conveyor belt 32 and be suspended on the conveyor belt 32 under the action of the rubber rod 33. The rubber rod 33 can reduce the impact force on the injection molded parts when they fall, and the fan in the wind cover 35 will blow air onto the conveyor belt 32 through the exhaust end 37, so that the injection molded parts can be efficiently cooled. At this time, the rubber rod 33 and the air vent 34 can improve the air permeability of the conveyor belt 32.

[0061] A method for unloading an injection molding machine, the operating steps are as follows:

[0062] Step 1: Set the injection mold 5 downward;

[0063] Step 2: Separate the pair of injection molds 5 that are arranged downwards into an inverted V shape;

[0064] Step 3: shaking the separated injection molds 5 back and forth;

[0065] Step 4: Blowing a fluctuating air pressure airflow into the injection mold 5;

[0066] Step 5: closing and resetting the pair of injection molds 5 separated from each other.

[0067] When the unloading device of the injection molding machine is in use, the driving motor 28 is started, the driving motor 28 will drive the incomplete gear 29 to rotate, and the incomplete gear 29 will drive the driven gear 30 to rotate intermittently, so that the driven gear 30 can drive the disc 4 to rotate intermittently through the rotating shaft 3, and the disc 4 will drive multiple groups of injection molds 5 to intermittently revolve around its axis, so as to achieve the purpose of intermittent position exchange. When the injection mold 5 is set upward, that is, when the injection mold 5 moves to the top of the support plate 2, the plastic injection work is completed. When the injection mold 5 moves to the bottom of the support plate 2, the rotating disc 4 will drive The driving gear 12 first sweeps across the first rack 8, and the first rack 8 drives the driving gear 12 to rotate, and drives the two rotating rods 6 to rotate under the action of the two transmission gears 7, and the rotation directions are opposite, and the two rotating rods 6 drive the two injection molds 5 to rotate, and make the two injection molds 5 appear on the disc 4 in an inverted V shape, so that the injection molded parts in the injection mold 5 will automatically fall downward to automatically complete the unloading of the workpiece, thereby improving the processing efficiency of the injection molding machine. During this period, the injection mold 5 near the top of the support plate 2 can also complete the injection molding work, thereby further improving the injection molding efficiency of the injection molding machine.

[0068] When the rotating rod 6 drives the injection mold 5 to swing, the injection mold 5 will drive the roller 14 to roll along the curved plate 15, and the roller 14 will pass through a plurality of equally spaced protrusions 16 in turn. When the roller 14 presses on the protrusion 16, the protrusion 16 will press the roller 14, so that the roller 14 drives the injection mold 5 to slide in the direction away from the slide plate 11. When the roller 14 passes over the protrusion 16, the first spring 13 will drive the injection mold 5 to slide in the opposite direction and reset. Therefore, when the roller 14 passes through a plurality of protrusions 16, the injection mold 5 will shake back and forth, thereby improving the demoulding efficiency of the injection molded parts in the injection mold 5, thereby indirectly improving the unloading efficiency of the injection molding machine. When the two injection molds 5 are in the mold closing, the injection mold 5 will shake again, thereby shaking off the residual debris inside it, thereby ensuring the subsequent injection molding quality.

[0069] When the rotating rod 6 drives the injection mold 5 to swing, and before the injection mold 5 shakes, it will also drive the passive gear 21 to sweep across the third rack 22, and the passive gear 21 will drive the threaded rod 18 to rotate, and the threaded rod 18 will drive the slider 20 to slide in the direction of the injection mold 5, thereby driving the nozzle 17 to move to the opening top of the injection mold 5. At this time, air is blown into the injection mold 5 through the nozzle 25 on the nozzle 17, which can further improve the demolding efficiency of the injection mold 5; and when the injection mold 5 moves in the opposite direction to reset, the passive gear 21 will drive the threaded rod 18 to reverse and reset, so that the nozzle 17 is away from the opening top of the injection mold 5.

[0070] The above description 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 solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A material unloading device for an injection molding machine, comprising a frame (1), characterized in that: Also includes: The support plate (2) is fixedly mounted on the frame (1). The support plate (2) is rotatably connected to a rotating shaft (3), a disc (4) is fixedly mounted on the rotating shaft (3), and a driving part for driving the disc (4) to intermittently rotate is provided on the support plate (2); A plurality of groups of mold assemblies are circumferentially distributed on the outer wall of the disk (4), The mold assembly comprises two rotating rods (6) rotatably connected to the disc (4), the two rotating rods (6) are each mounted with an injection mold (5), the two groups of injection molds (5) cooperate with each other, the disc (4) is provided with a linkage part for driving the two rotating rods (6) to rotate, and when the mold assembly is arranged downward, the two injection molds (5) are separated from each other; The driving unit comprises a driving motor (28) fixedly mounted on the support plate (2), an output shaft of the driving motor (28) being fixedly mounted with an incomplete gear (29). Wherein, a driven gear (30) meshingly connected with the incomplete gear (29) is rotatably mounted on the support plate (2), and the driven gear (30) is connected to the rotating shaft (3) via a worm gear (31); The linkage part comprises a transmission gear (7) fixedly mounted on two rotating rods (6), the two transmission gears (7) being meshed and connected with each other. A driving gear (12) is fixedly mounted on one of the rotating rods (6), and a first rack (8) and a second rack (9) are fixedly connected to the support plate (2); when the injection mold (5) is moved to a downward position, the driving gear (12) meshes with the first rack (8); and when the injection mold (5) is moved upward, the driving gear (12) meshes with the second rack (9); The injection mold (5) is provided with a slide groove (10), a slide plate (11) is slidably connected in the slide groove (10), the rotating rod (6) is fixedly connected to the slide plate (11), the slide plate (11) and the inner wall of the slide groove (10) are elastically connected via a first spring (13), and the disc (4) is provided with a shaking part for driving the injection mold (5) to shake back and forth; The shaking part comprises a roller (14) rotatably mounted on the injection mold (5); an arc-shaped plate (15) is fixedly connected to the outer wall of the disc (4); and convex blocks (16) arranged at equal intervals are fixedly connected to the arc-shaped plate (15); when the two injection molds (5) move away from each other, the injection molds (5) drive the roller (14) to roll along the arc-shaped plate (15).

2. The unloading device of an injection molding machine according to claim 1, characterized in that: The outer wall of the injection mold (5) is fixedly connected to a slide bar (19), a slider (20) is slidably connected to the slide bar (19), a nozzle (17) is mounted on the slider (20), and a nozzle (25) facing the inside of the injection mold (5) is fixedly mounted on the nozzle (17). The injection mold (5) is provided with a driving portion for driving the slider (20) to slide along the slide bar (19); when the two injection molds (5) move away from each other, the nozzle (17) slides towards the opening direction of the injection mold (5).

3. The unloading device of an injection molding machine according to claim 2, characterized in that: The pushing portion comprises a threaded rod (18) rotatably mounted on the injection mold (5); the slider (20) is threadedly connected to the threaded rod (18); a passive gear (21) is fixedly mounted on one end of the threaded rod (18); and a third rack (22) that cooperates with the passive gear (21) is fixedly mounted on the disc (4).

4. The unloading device of an injection molding machine according to claim 2, characterized in that: The slider (20) is provided with a sliding hole (24), a sliding column (23) is slidably connected in the sliding hole (24), the sliding column (23) and the inner wall of the sliding hole (24) are elastically connected via a second spring, a guide slope (36) facing the edge of the injection mold (5) is provided at the end of the nozzle (17), and the nozzle (17) is fixedly connected to the sliding column (23).

5. The unloading device of an injection molding machine according to claim 2, characterized in that: An air intake pipe (26) and an air exhaust pipe (27) which are in communication with the slide groove (10) are fixedly connected to the outer wall of the injection mold (5); a one-way valve is fixedly installed in each of the air intake pipe (26) and the air exhaust pipe (27); and the end of the air exhaust pipe (27) is fixedly connected to and in communication with the nozzle (17).

6. A method for unloading a material for an injection molding machine, comprising the unloading device for an injection molding machine according to any one of claims 1 to 5, characterized in that: The steps are as follows: Step 1: placing the injection mold (5) facing downward; Step 2: Separate a pair of downwardly disposed injection molds (5) into an inverted V-shape; Step 3: shaking the separated injection molds (5) back and forth; Step 4: Blowing an air flow with fluctuating air pressure into the injection mold (5); Step 5: The pair of injection molds (5) separated from each other are closed and reset.

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