Automatic forming equipment for plastic part production

Abstract

The invention discloses automatic forming equipment for plastic part production, and relates to the technical field of injection molding. A turntable; multiple groups of molds; an injection gun; a molded part; a shearing mechanism; a lifting mechanism; in the rotating process of the rotating disc, the molds can conduct a first mold opening stroke and a second mold opening stroke, in the first mold opening stroke, only the two outer molds are driven to slide away from each other, so that the two inner molds are exposed, after the two inner molds are exposed, the rotating disc rotates to passively enable the lifting mechanism to drive the shearing mechanism to descend, and an abutting plate abuts against the side walls of the inner molds; along with rotation of the rotating disc, the two cutters move close to each other along the arc shape to cut the pouring gate, and after cutting, the second mold opening stroke enables the two inner molds to be opened, so that a formed part with the cut pouring gate is subjected to blanking, then the inner molds and the outer molds are reset, the pouring gate can be cut immediately after injection molding, production procedures are reduced, production efficiency is improved, and production cost is reduced. And the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to an automatic molding device for producing plastic accessories. Background Art

[0002] Injection molding is the process of recycling waste plastics, heating the waste plastics into a molten state, injecting the molten plastic into a mold for injection molding, and then forming the injection molded parts after the molten plastic cools down.

[0003] When refrigerators are produced, many parts are formed by injection molding. The injection molded parts of refrigerators have various shapes, including round, square, etc. Among them, the round injection molded parts include: round door handles, round safety door handles, round sealing rings, round storage boxes, etc.

[0004] For example, the publication number is CN221562153U, and the name is: "A new type of injection mold for refrigerator box accessories", which includes a lower mold, an upper mold is arranged above the lower mold, and a quick ejection component is arranged inside the lower mold; the new type of injection mold for refrigerator box accessories, through the cooperation of the arranged installation cavity, electric push rod, lower top plate and upper top plate, can eject the injection molded part upward after cooling, accelerate the demoulding of the injection molded part, and avoid the refrigerator box injection molded part condensing in the cavity and being difficult to demould; at the same time, through the cooperation of the arranged square frame, conical plate, sealing strip, countersunk groove, through hole and connecting hole, a small amount of air can be slowly injected into the bottom of the injection molded part before demoulding, accelerate the separation speed between the injection molded part and the inner wall of the lower mold, and avoid the injection molded part and the inner wall of the lower mold still being attached when demoulding upward, which affects the molding effect and demoulding effect of the injection molded part.

[0005] In the prior art such as the above, an injection port is provided on the mold, and the injection port is connected to the molding space inside the mold. The molten plastic raw material enters the molding space inside the mold through the injection port. When the molten plastic cools down, the molding space makes the injection molded part formed, and the injection port is also filled with molten plastic. Therefore, when the molten plastic in the injection port cools down, a gate integrated with the injection molded part will be formed. The gate is the excess scraps other than the injection molded part. In the prior art, usually after the injection molded part is formed, workers need to use special cutting equipment to cut the gate, and then polish it after cutting, which makes the production process more, thereby greatly reducing the production efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide an automated molding device for the production of plastic parts to solve the deficiencies in the above-mentioned prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solution: an automated molding device for producing plastic parts, comprising:

[0008] frame;

[0009] a turntable, which is rotatably connected to the frame;

[0010] Multiple sets of molds, each set of molds includes two outer molds slidably connected to a rotating disk, the two outer molds are both abutted and matched with inner molds, the two outer molds are abutted and matched with each other, the two inner molds are abutted and matched with each other, the two outer molds are each provided with an injection port, and the inner molds are each provided with a molding space;

[0011] An injection gun is arranged on the frame, and the mouth of the injection gun is plugged into and matched with the injection port;

[0012] A molded part, which is formed by cooling the molten plastic in the molding space;

[0013] The shearing mechanism comprises two abutment plates slidably connected to the frame, and the two abutment plates are fixedly connected with cutting knives;

[0014] A lifting mechanism, which is arranged on the frame and is used to drive the shearing mechanism to move up and down;

[0015] When the turntable rotates in the first direction, the following operations are performed in sequence:

[0016] At the injection molding station: the two outer molds and the two inner molds are in contact with each other, and the mouth of the injection molding gun is plugged into the injection port to inject molten plastic into the molding space;

[0017] In the first mold opening stroke: the two outer molds slide on the turntable and move away from each other, and the two inner molds still abut against each other, so that the two inner molds are exposed;

[0018] In the cutting stroke: first, the lifting mechanism drives the shearing mechanism to descend as a whole, so that the two abutting plates abut against the side walls of one of the inner molds, and then the two abutting plates slide along the side walls of the inner mold, and the gate is cut by the cutting knife;

[0019] In the second mold opening stroke: the two outer molds continue to slide on the turntable, and drive their corresponding inner molds to slide synchronously, so that the two inner molds move away from each other, so that the molded parts in the molding space of the two inner molds are unloaded;

[0020] During the mold closing stroke, the two outer molds slide on the turntable and approach each other. During the sliding process, the two outer molds respectively abut against their corresponding inner molds and drive the two inner molds to move synchronously until the two inner molds abut against each other, so that the mold returns to its initial state.

[0021] Furthermore, the bottoms of the two outer molds are fixedly connected with sliding rods, and the turntable is provided with sliding grooves corresponding to the two sliding rods, and the two sliding rods are slidably connected in the two sliding grooves one by one.

[0022] Furthermore, two push rods are provided on the turntable, and the two push rods are fixedly connected to the two inner molds one by one, and the two outer molds are slidably connected to the two push rods one by one, and the two inner molds are fixedly connected with mold opening rods, and the ends of the two inner mold opening rods respectively penetrate and extend to the outside of the two outer molds, and abut against the side walls of the two outer molds.

[0023] Furthermore, it also includes an opening and closing mechanism, which corresponds to each group of molds. The opening and closing mechanism includes a rotating member rotatably connected to the bottom of the turntable, and two opening and closing frames are distributed on the rotating member in a circular array. The two sliding rods are slidably abutted against the two opening and closing frames one by one.

[0024] Furthermore, a gear is fixedly connected to the rotating member, and a first rack, a second rack and a third rack are respectively fixedly connected to the frame, and the gear is respectively meshed with the first rack, the second rack and the third rack.

[0025] Furthermore, the lifting mechanism includes a sleeve slidably connected to the frame, a lifting rod is arranged in the sleeve, a first spring is arranged between the lifting rod and the bottom of the sleeve, a lifting groove is provided on the sleeve, an elastic telescopic rod is fixedly connected to the lifting rod, the elastic telescopic rod is slidably connected in the lifting groove, the end of the elastic telescopic rod is rotatably abutted against the side wall of the turntable, the side wall of the turntable is provided with a plurality of inclined grooves in a circular array, the end of the elastic telescopic rod is plugged into and matched with each inclined groove, and a pull-out rod is fixedly connected to the elastic telescopic rod.

[0026] Furthermore, a following groove is provided on the frame, the sleeve is slidably connected in the following groove, and a second spring is provided between the sleeve and the inner wall of the following groove.

[0027] Furthermore, a pull-out groove is provided on the frame, the pull-out rod is slidably connected in the pull-out groove, and the pull-out groove is composed of an arc section and a pull-out section connected to each other.

[0028] Furthermore, the shearing mechanism also includes a fixed plate fixedly connected to the end of the lifting rod, two cutting grooves are opened on the fixed plate, and a lifting frame is vertically slidably connected to the fixed plate. The lifting frame is fixedly connected to a vertical rod, which passes through and extends to the outside of the lifting rod, and a contact rod is fixedly connected to the end of the vertical rod. A third spring is sleeved on the vertical rod, and cutting rods are slidably connected in the two cutting grooves, one end of the two cutting rods is fixedly connected to the two abutment plates respectively, and the other ends are slidably connected in the lifting frame, and a slope is fixedly connected to the frame, and the abutment rod slides and abuts against the slope.

[0029] Furthermore, the portion of the cutting rod that is slidably connected to the cutting groove is circular, and the portion of the cutting rod that is slidably connected to the lifting frame is square.

[0030] In the above technical scheme, the present invention provides an automated molding equipment for the production of plastic accessories. During the rotation of the turntable, the mold can perform a first mold opening stroke and a second mold opening stroke respectively. In the first mold opening stroke, only the two outer molds are driven to slide away from each other, so that the two inner molds are exposed. After exposure, the rotation of the turntable passively causes the lifting mechanism to drive the shearing mechanism to descend, so that the abutment plate abuts against the side wall of the inner mold. As the turntable rotates, the two cutters move closer to each other along an arc to trim the gate. After trimming, the second mold opening stroke opens the two inner molds, so that the molded parts with the gate trimmed can be unloaded, and then the inner mold and the outer mold are reset, so that the gate can be trimmed immediately after injection molding, reducing production processes and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0032] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of a top view of the overall structure provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the bottom structure of a turntable provided in an embodiment of the present invention;

[0035] Figure 4 A schematic diagram of the initial state structure of the injection molding mold provided by an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of a first mold opening stroke state of a mold provided by an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of a second mold opening stroke state of a mold provided by an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of the structure of an opening and closing mechanism provided in an embodiment of the present invention;

[0039] Figure 8 A schematic diagram of the structure of a lifting mechanism and a shearing mechanism provided in an embodiment of the present invention;

[0040] Fig. 9 A schematic diagram of the shearing mechanism structure provided by an embodiment of the present invention;

[0041] Fig.10A schematic diagram of the exploded structure of the shearing mechanism provided in an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1. Frame; 11. Following slot; 12. Arc section; 13. Pull-out section; 2. Turntable; 21. Inclined slot; 3. Mold; 31. Outer mold; 31. Injection port; 32. Slide bar; 33. Ejector bar; 34. Inner mold; 34. Molding space; 35. Mold opening rod; 4. Injection gun; 5. Molding part; 6. Opening and closing mechanism; 61. Rotating part; 62. Opening and closing frame; 63. Gear; 64. First rack; 65. First Second rack; 66, third rack; 7, lifting mechanism; 71, sleeve; 711, lifting slot; 72, lifting rod; 73, first spring; 74, elastic telescopic rod; 75, pull-out rod; 76, second spring; 8, shearing mechanism; 81, fixing plate; 811, cutting slot; 82, lifting frame; 83, third spring; 84, cutting rod; 85, abutment plate; 86, cutter; 87, abutment rod; 88, ramp. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] See also Figure 1-10 An embodiment of the present invention provides an automated molding device for the production of plastic accessories, comprising: a frame 1; a turntable 2, which is rotatably connected to the frame 1; in an embodiment of the present invention, it also includes a driving source for driving the turntable 2, the driving source is a motor, and the output end of the motor is coaxially fixedly connected to the turntable 2.

[0046] Multiple groups of molds 3, each group of molds 3 includes two outer molds 31 slidably connected to the turntable 2, the two outer molds 31 are both abutted and connected with inner molds 34, the two outer molds 31 abut and fit with each other, the two inner molds 34 abut and fit with each other, the two outer molds 31 have injection ports 311, and the inner molds 34 have a molding space 341.

[0047] Specifically, the specific sliding connection method of the outer mold 31 on the turntable 2 is: the bottom of the two outer molds 31 are fixedly connected with a sliding rod 32, and the turntable 2 is provided with a sliding groove 22 corresponding to the two sliding rods 32, and the two sliding rods 32 are slidingly connected in the two sliding grooves 22 one by one.

[0048] More specifically, two push rods 33 are provided on the turntable 2; Figure 4As shown, the push rod 33 is in an "L" shape, and is divided into a horizontal section and a vertical section, and the vertical section abuts against the side wall of the outer mold 31; the two push rods 33 are fixedly connected to the two inner molds 34 one by one, and the two outer molds 31 are slidingly connected to the two push rods 33 one by one, and the two inner molds 34 are fixedly connected with mold opening rods 35, and the ends of the two inner mold opening rods 35 respectively penetrate and extend to the outside of the two outer molds 31, and abut against the side walls of the two outer molds 31.

[0049] During the first mold opening stroke, the two outer molds 31 are driven by the opening and closing mechanism 6 to move away from each other, so that the two outer molds 31 slide on the turntable 2. At the same time, the outer mold 31 also slides along the length direction of the horizontal section of the top until the side wall of the outer mold 31 abuts against the vertical section of the ejector rod 33. At this time, the outer mold 31 stops sliding, so that the two inner molds 34 leak out. At this time, the two inner molds 34 have a clamping effect on the molded part 5, and with the opening of the two outer molds 31, it is convenient to cut the gate.

[0050] During the second mold opening stroke, the shearing mechanism 8 has completed cutting the gate. At this time, the molded part 5 needs to be demolded and unloaded. Immediately after the above, the two outer molds 31 continue to slide and move away from each other. At this time, since the vertical section of the outer mold 31 abuts against the push rod 33, and the push rod 33 is fixedly connected to the inner mold 34, the sliding of the outer mold 31 will drive the inner mold 34 to slide synchronously under the action of the abutment force, so that the two inner molds 34 move away from each other and open, so that there is a unloading space between the two inner molds 34, and the molded part 5 is unloaded.

[0051] Preferably, if Figure 6 In the state shown, the push rod 33 is rotatably connected to the turntable 2, and the end of the push rod 33 is provided with a thread, through which the push rod 33 and the inner mold 34 are screwed together; when the outer mold 31 drives the inner mold 34 to move laterally, the inner mold 34 in the moving state will drive the push rod 33 to rotate due to the effect of the screw connection, and the rotation of the push rod 33 can make the end of the push rod 33 separate from the molded part 5 as the rotation proceeds, thereby avoiding the molded part 5 and the end of the push rod 33 from sticking; and the lateral movement of the inner mold 34 will cause the push rod 33 to support the molded part 5, so that the molded part 5 is separated from the inner mold 34, thereby avoiding the molded part 5 sticking to the inner mold 34, which makes it impossible to unload the material.

[0052] The injection gun 4 is arranged on the frame 1 , and the mouth of the injection gun 4 is plugged into and matched with the injection port 311 .

[0053] The molded part 5 is formed by cooling the molten plastic in the molding space 341;

[0054] In an embodiment of the present invention, an opening and closing mechanism 6 is also included, which is used to drive the outer mold 31 to move back and forth horizontally on the turntable 2; it corresponds to each group of molds 3, and the opening and closing mechanism 6 includes a rotating member 61 rotatably connected to the bottom of the turntable 2, and two opening and closing frames 62 are distributed in a circular array on the rotating member 61, wherein the opening and closing frame 62 is arc-shaped; the two sliding rods 32 are slidably abutted against the two opening and closing frames 62 respectively in a one-to-one correspondence.

[0055] Specifically, a gear 63 is fixedly connected to the rotating member 61, and a first rack 64, a second rack 65 and a third rack 66 are fixedly connected to the frame 1 respectively. The gear 63 is meshed with the first rack 64, the second rack 65 and the third rack 66 respectively.

[0056] Among them, the teeth of the first rack 64 and the second rack 65 are both facing the axis position of the turntable 2, and the teeth of the third rack 66 are set away from the axis position of the turntable 2, that is, the teeth of the third rack 66 are set in the opposite direction to the teeth of the first rack 64 and the second rack 65.

[0057] Understandable, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, when the first rack 64 is meshed with the gear 63, the gear 63 drives the two opening and closing frames 62 to rotate synchronously, so that the slide bar 32 slides in the slide groove 22 through the cooperation between the opening and closing frames 62 and the slide bar 32, that is, the initial state is changed to the first mold opening stroke (that is, from Figure 4 becomes Figure 5 When the second rack 65 is meshed with the gear 63, the mold 3 is driven to change from the first mold opening stroke to the second mold opening stroke (i.e., from Figure 5 becomes Figure 6 The outer mold 31 is in the state shown in the figure, wherein the distance moved by the outer mold 31 in the first mold opening stroke is equal to the distance moved by the outer mold 31 in the second mold opening stroke, and when the third rack 66 is engaged with the gear 63, the gear 63 is driven to rotate in the opposite direction, and the outer mold 31 is reversely moved and reset to the initial state through the rotation of the gear 63, that is, the reset distance of the outer mold 31 at this time is twice the moving distance of the outer mold 31 in the first mold opening stroke and the second mold opening stroke.

[0058] The lifting mechanism 7 is arranged on the frame 1, and is used for driving the shearing mechanism 8 to move up and down.

[0059] Specifically, the lifting mechanism 7 includes a sleeve 71 slidably connected to the frame 1, a lifting rod 72 is arranged in the sleeve 71, and a first spring 73 is arranged between the lifting rod 72 and the bottom of the sleeve 71; the first spring 73 is a compression spring; a lifting groove 711 is provided on the sleeve 71, and an elastic telescopic rod 74 is fixedly connected to the lifting rod 72, and the elastic telescopic rod 74 is slidably connected in the lifting groove 711, and the end of the elastic telescopic rod 74 is rotatably abutted against the side wall of the turntable 2, and the side wall of the turntable 2 is provided with a plurality of inclined grooves 21 in a circular array, and the end of the elastic telescopic rod 74 is plugged into each inclined groove 21, and a pull-out rod 75 is fixedly connected to the elastic telescopic rod 74.

[0060] As the turntable 2 rotates, the end of the elastic telescopic rod 74 is always in contact with the side wall of the turntable 2. During the contact process, the end of the elastic telescopic rod 74 is always in a contracted state until the inclined groove 21 rotates to the position of the elastic telescopic rod 74, the end of the elastic telescopic rod 74 extends outward and is inserted into the inclined groove 21, and moves synchronously with the turntable 2, so that the elastic telescopic rod 74 has a descending stroke and a following stroke; in the descending stroke, the lifting rod 72 slides vertically in the sleeve 71, that is, drives the shearing mechanism 8 to descend vertically synchronously, so that the abutment plate 85 abuts against the top and side of the inner mold 34, preparing for the cutting operation; in the following stroke, the elastic telescopic rod 74 rotates with the turntable 2, that is: drives the sleeve 71 to slide in the following groove 11.

[0061] The specific sliding connection between the sleeve 71 and the frame 1 is as follows: a following groove 11 is provided on the frame 1, the sleeve 71 is slidably connected in the following groove 11, and a second spring 76 is provided between the sleeve 71 and the inner wall of the following groove 11; the second spring 76 is a tension spring.

[0062] Specifically, a pull-out groove is provided on the frame 1, and the pull-out rod 75 is slidably connected in the pull-out groove, and the pull-out groove is composed of an arc segment 12 and a pull-out segment 13. The arc segment 12 is coaxially provided with the rotating disk 2, and the pull-out segment 13 is provided obliquely.

[0063] When the lifting mechanism 7 rotates following the turntable 2, the pulling rod 75 is slidably connected in the arc segment 12. As the lifting mechanism 7 rotates following the turntable 2, when the pulling rod 75 slides into the pulling segment 13, the pulling rod 75 drives the end of the elastic telescopic rod 74 to contract, so that the end of the elastic telescopic rod 74 is pulled out from the inclined groove 21. After being pulled out, due to the elastic force of the first spring 73 and the second spring 76 to restore the elastic deformation, the lifting mechanism 7 is driven to move and reset to the initial state, so as to facilitate the cutting of the gate of the next adjacent molded part 5.

[0064] The shearing mechanism 8 comprises two abutment plates 85 slidably connected to the frame 1, and a cutter 86 is fixedly connected to the two abutment plates 85;

[0065] Specifically, the shearing mechanism 8 also includes a fixed plate 81 fixedly connected to the end of the lifting rod 72, and two cutting grooves 811 are opened on the fixed plate 81; specifically, the cutting grooves 811 are opened in an arc shape; a lifting frame 82 is vertically slidably connected to the fixed plate 81, and a vertical rod is fixedly connected to the lifting frame 82, and the vertical rod passes through and extends to the outside of the lifting rod 72, and an abutment rod 87 is fixedly connected to the end of the vertical rod, and a third spring 83 is sleeved on the vertical rod, and cutting rods 84 are slidably connected in the two cutting grooves 811, and one end of the two cutting rods 84 is fixedly connected to the two abutment plates 85 respectively, and the other end is slidably connected in the lifting frame 82, and a ramp 88 is fixedly connected to the frame 1, and the abutment rod 87 is slidably abutted with the ramp 88.

[0066] It can be understood that when the abutment plate 85 abuts against the inner mold 34 , the two cutting grooves 811 are coaxial with the axis of the inner mold 34 , so that the abutment plate 85 moves along an arc, that is, along the side wall edge of the inner mold 34 , thereby cutting the gate.

[0067] The shearing mechanism 8 is driven by the lifting mechanism 7, and in the process of following the rotation of the turntable 2, the abutment rod 87 will abut against the slope 88, driving the abutment rod 87 to drive the lifting frame 82 to move vertically upward, and through the cooperation of the lifting frame 82, the cutting groove 811, and the cutting rod 84, the two abutment plates 85 are driven to make an arc movement to the position between the two and above, so that the two abutment plates 85 are close to each other, so that the two cutters 86 cut the gate; when the abutment rod 87 is disengaged from the slope 88, the elastic force of the elastic deformation is restored by the third spring 83, driving the shearing mechanism 8 to reset to its initial state.

[0068] Preferably, the portion of the cutting rod 84 that is slidably connected to the cutting groove 811 is circular, and the portion of the cutting rod 84 that is slidably connected to the lifting frame 82 is square; in this way, it can be ensured that the abutment plate 85 will not abut against the side wall of the inner mold 34 due to its own rotation.

[0069] In the embodiment of the present invention, a robot arm (not shown in the figure) is also included. The robot arm is a prior art and will not be described in detail here. The robot arm is used to collect the fallen molded parts 5.

[0070] When the turntable 2 rotates in the first direction, the following operations are performed in sequence:

[0071] At the injection molding station: the two outer molds 31 and the two inner molds 34 are in contact with each other, and the mouth of the injection molding gun 4 is plugged into the injection port 311 to inject molten plastic into the molding space 341;

[0072] In the first mold opening stroke: the two outer molds 31 slide on the turntable 2 and move away from each other, and the two inner molds 34 still abut against each other, so that the two inner molds 34 are exposed;

[0073] In the cutting stroke: first, the lifting mechanism 7 drives the shearing mechanism 8 to descend as a whole, so that the two abutting plates 85 abut against the side walls of one of the inner molds 34, and then the two abutting plates 85 slide along the side walls of the inner mold 34, and the gate is cut by the cutter 86;

[0074] In the second mold opening stroke: the two outer molds 31 continue to slide on the turntable 2, and drive the corresponding inner molds 34 to slide synchronously, so that the two inner molds 34 move away from each other, so that the molded parts 5 in the molding spaces 341 of the two inner molds 34 are unloaded;

[0075] During the mold closing stroke, the two outer molds 31 slide on the turntable 2 and approach each other. During the sliding process, the two outer molds 31 respectively abut against their corresponding inner molds 34 and drive the two inner molds 34 to move synchronously until the two inner molds 34 abut against each other, so that the mold 3 returns to its initial state.

[0076] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automated molding device for the production of plastic parts, characterized in that: include: Rack (1); A turntable (2) rotatably connected to the frame (1); A plurality of groups of molds (3), each group of molds (3) comprising two outer molds (31) slidably connected to a rotating disk (2), the two outer molds (31) being connected to inner molds (34) in abutment with each other, the two outer molds (31) being in abutment with each other, the two inner molds (34) being in abutment with each other, the two outer molds (31) being provided with an injection port (311), and the inner molds (34) being provided with a molding space (341); An injection gun (4) is arranged on the frame (1), and the mouth of the injection gun (4) is plugged into and matched with the injection port (311); A molded part (5) formed by cooling the molten plastic in the molding space (341); A shearing mechanism (8), comprising two abutment plates (85) slidably connected to the frame (1), and a cutter (86) is fixedly connected to each of the two abutment plates (85); A lifting mechanism (7) is arranged on the frame (1), and the lifting mechanism (7) is used to drive the shearing mechanism (8) to move up and down; During the process of the rotating disk (2) rotating in the first direction, the following operations are sequentially performed: At the injection molding station: the two outer molds (31) and the two inner molds (34) are in contact with each other, and the mouth of the injection molding gun (4) is plugged into the injection molding port (311) to inject molten plastic into the molding space (341); In the first mold opening stroke: the two outer molds (31) slide on the rotating disk (2) and move away from each other, and the two inner molds (34) still abut against each other, so that the two inner molds (34) are exposed; In the material cutting stroke: firstly, the lifting mechanism (7) drives the shearing mechanism (8) to descend as a whole, so that the two abutting plates (85) abut against the side wall of one of the inner molds (34); secondly, the two abutting plates (85) slide along the side wall of the inner mold (34), and the gate is cut by the cutter (86); In the second mold opening stroke: the two outer molds (31) continue to slide on the rotating disk (2), and drive the corresponding inner molds (34) to slide synchronously, so that the two inner molds (34) move away from each other, thereby allowing the molded parts (5) in the molding spaces (341) of the two inner molds (34) to be unloaded; During the mold closing stroke, the two outer molds (31) slide on the turntable (2) and approach each other. During the sliding process, the two outer molds (31) respectively abut against their corresponding inner molds (34) and drive the two inner molds (34) to move synchronously until the two inner molds (34) abut against each other, so that the mold (3) returns to the initial state.

2. The automated molding equipment for producing plastic parts according to claim 1, characterized in that: The bottoms of the two outer molds (31) are fixedly connected with sliding rods (32), and the turntable (2) is provided with sliding grooves (22) corresponding to the two sliding rods (32). The two sliding rods (32) are slidably connected in the two sliding grooves (22) in a one-to-one correspondence.

3. The automated molding equipment for producing plastic parts according to claim 1, characterized in that: Two push rods (33) are arranged on the turntable (2), and the two push rods (33) are fixedly connected to the two inner molds (34) in a one-to-one correspondence, and the two outer molds (31) are slidably connected to the two push rods (33) in a one-to-one correspondence, and the two inner molds (34) are fixedly connected with mold opening rods (35), and the ends of the two inner mold opening rods (35) respectively penetrate and extend to the outside of the two outer molds (31) and abut against the side walls of the two outer molds (31).

4. The automated molding equipment for producing plastic parts according to claim 2, characterized in that: The invention also comprises an opening and closing mechanism (6) which corresponds to each group of molds (3). The opening and closing mechanism (6) comprises a rotating member (61) rotatably connected to the bottom of the turntable (2). Two opening and closing frames (62) are distributed in a circular array on the rotating member (61). The two sliding rods (32) are respectively slidably abutted against the two opening and closing frames (62) in a one-to-one correspondence.

5. The automated molding equipment for producing plastic parts according to claim 4, characterized in that: A gear (63) is fixedly connected to the rotating member (61), and a first rack (64), a second rack (65) and a third rack (66) are respectively fixedly connected to the frame (1), and the gear (63) is respectively meshed with the first rack (64), the second rack (65) and the third rack (66).

6. The automated molding equipment for producing plastic parts according to claim 1, characterized in that: The lifting mechanism (7) comprises a sleeve (71) slidably connected to the frame (1), a lifting rod (72) is arranged in the sleeve (71), a first spring (73) is arranged between the lifting rod (72) and the bottom of the sleeve (71), a lifting groove (711) is provided on the sleeve (71), an elastic telescopic rod (74) is fixedly connected to the lifting rod (72), the elastic telescopic rod (74) is slidably connected in the lifting groove (711), the end of the elastic telescopic rod (74) is rotatably abutted against the side wall of the rotating disk (2), the side wall of the rotating disk (2) is provided with a plurality of inclined grooves (21) in a circumferential array, the end of the elastic telescopic rod (74) is plugged into each inclined groove (21), and a pull-out rod (75) is fixedly connected to the elastic telescopic rod (74).

7. The automated molding equipment for producing plastic parts according to claim 6, characterized in that: A following groove (11) is provided on the frame (1), a sleeve (71) is slidably connected in the following groove (11), and a second spring (76) is provided between the sleeve (71) and the inner wall of the following groove (11).

8. The automated molding equipment for producing plastic parts according to claim 6, characterized in that: The frame (1) is provided with a pull-out groove, in which a pull-out rod (75) is slidably connected, and the pull-out groove is composed of an arc section (12) and a pull-out section (13) connected to each other.

9. The automated molding equipment for producing plastic parts according to claim 6, characterized in that: The shearing mechanism (8) further comprises a fixed plate (81) fixedly connected to the end of the lifting rod (72), two cutting grooves (811) being provided on the fixed plate (81), a lifting frame (82) being vertically slidably connected to the fixed plate (81), a vertical rod being fixedly connected to the lifting frame (82), the vertical rod penetrating and extending to the outside of the lifting rod (72), and a contact rod (87) being fixedly connected to the end of the vertical rod, a third spring (83) being sleeved on the vertical rod, cutting rods (84) being slidably connected in the two cutting grooves (811), one end of the two cutting rods (84) being fixedly connected to the two contact plates (85) in a one-to-one correspondence, and the other end of the two cutting rods (84) being slidably connected in the lifting frame (82), a slope (88) being fixedly connected to the frame (1), and the contact rod (87) being slidably contacted with the slope (88).

10. The automated molding equipment for producing plastic parts according to claim 9, characterized in that: The portion of the cutting rod (84) that is slidably connected to the cutting groove (811) is circular, and the portion of the cutting rod (84) that is slidably connected to the lifting frame (82) is square.

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