Feeding and discharging device for machining of vertical injection molding machine

Abstract

A disclosed loading and unloading device for vertical injection molding machine processing comprises an injection molding machine main body and a base, the injection molding machine main body is arranged at the top of the base, the injection molding machine main body drives a moving mold moving up and down, the base is provided with a rotating mold matched with the moving mold, and the upper end face of the base is provided with a rotating cavity; the rotating mold is rotationally arranged in the rotating cavity, the upper end face and the lower end face of the rotating mold are each provided with a forming cavity, a positioning rod is arranged at the bottom of the movable mold, the upper end face and the lower end face of the rotating mold are each provided with a positioning hole matched with the positioning rod, and a driving mechanism used for driving the rotating mold to rotate is arranged in each positioning hole. According to the structure, manual discharging is not needed, and the device automatically completes discharging and collecting while plastic parts are produced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic material conveying equipment, and in particular to a loading and unloading device for vertical injection molding machines. Background Art

[0002] Vertical injection molding machine is a mechanical device. It is usually composed of injection system, mold clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc. The injection system is one of the most important components of the injection molding machine. Generally, there are three main types: plunger type, screw type, and screw pre-plastic plunger injection type. The most widely used is the screw type. Its function is to heat and plasticize a certain amount of plastic within a specified time in one cycle of the injection molding machine, and then inject the molten plastic into the mold cavity through the screw at a certain pressure and speed.

[0003] Chinese patent publication number CN105216213A discloses a vertical injection molding machine, including a base, a lower mold is arranged on the base, an upper mold is arranged above the lower mold, the lower mold cooperates with the upper mold to form an injection cavity, an injection tube is arranged inside the lower mold, a downward pressure cylinder is arranged at the upper end of the upper mold, an ejection cylinder is arranged on the lower mold, a material discharge chute is arranged on the right side of the lower mold, and a material discharge lever is arranged on the left side of the lower mold and the upper mold, and the material discharge lever is driven to move laterally by the transverse tracks arranged at both ends thereof. The upper mold and the lower mold are combined to form a cavity by the downward pressure cylinder, and the material is ejected by the ejection cylinder, and the material is transferred to the material discharge chute by the material discharge lever for discharge, and a guide column and a guide column plate are arranged to guide the travel direction of the upper mold to avoid the upper mold descending direction error resulting in loose mold clamping of the upper and lower molds.

[0004] Existing injection molding equipment requires manual removal of plastic parts from the mold after use. If the mold is closed incorrectly during the removal process, it can easily lead to major accidents and pose certain safety risks. The use of a robot to take out materials cannot adapt to most equipment and is also costly.

[0005] Therefore, it is necessary to provide a loading and unloading device for a vertical injection molding machine to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a loading and unloading device for vertical injection molding machine to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a loading and unloading device for vertical injection molding machine processing, comprising an injection molding machine body and a base, wherein the injection molding machine body is arranged on the top of the base, and the injection molding machine body drives a movable mold to move up and down, and the base is provided with a rotating mold adapted to the movable mold, and a rotating cavity is opened on the upper end surface of the base, and the rotating mold is rotatably arranged inside the rotating cavity, and the upper end surface and the lower end surface of the rotating mold are both provided with molding cavities, and a positioning rod is provided at the bottom of the movable mold, and the upper end surface and the lower end surface of the rotating mold are both provided with positioning holes adapted to the positioning rod, and a driving mechanism for driving the rotating mold to rotate is provided inside the positioning hole.

[0008] Furthermore, the positioning rods are provided in four groups and are symmetrically distributed at the four corners of the lower end surface of the movable mold.

[0009] As a further solution of the present invention, the driving mechanism includes a pressing plate, a tooth plate and a driving plate. A driving cavity adapted to the driving mechanism is opened inside the rotating mold, and the driving cavity is connected to the positioning hole. The pressing plate is elastically connected to the inside of the driving cavity. The driving plate is fixedly connected to the side of the pressing plate away from the positioning hole. The tooth plate is elastically embedded in the side end face of the driving plate, and the tooth plate is fitted with the outer end face of the rotating shaft. The outer end face of the rotating shaft is provided with a tooth groove adapted to the tooth plate.

[0010] Furthermore, a circular plate matched with the positioning hole is provided at the end of the pressing plate, and the driving mechanism is provided with multiple groups and symmetrically arranged, and the multiple groups of driving mechanisms are all used to drive the rotating shaft to rotate in the same direction.

[0011] As a further solution of the present invention, a rotating shaft is rotatably provided in the middle part of the rotating mold, and the rotating shaft is elastically connected to the rotating mold through a coil spring. The rotating shaft passes through the rotating mold and extends to the interior of the rotating cavity. A rotating limit ring is provided inside the rotating cavity to limit the unidirectional rotation of the rotating shaft.

[0012] Furthermore, the rotating cavity is arc-shaped, and a collecting mechanism connected to the bottom of the rotating cavity is provided inside the base. After the plastic parts fall into the rotating cavity as the rotating mold flips, they slide along the rotating cavity to the inside of the collecting mechanism for collection, thereby preventing the plastic parts from accumulating inside the rotating cavity and affecting the rotation of the rotating mold.

[0013] As a further solution of the present invention, a rotation limiting mechanism is sleeved on the end of the rotating shaft, and the rotation limiting mechanism includes a sleeve tube, an arcuate portion and a parallel portion. The sleeve tube is sleeved on the end of the rotating shaft, and the sleeve tube is fixedly connected to the side end face of the rotating mold. Two groups of the arcuate portion and the parallel portion are provided, and the arcuate portion and the parallel portion are symmetrically arranged at one end of the sleeve tube away from the rotating mold. A rotating cavity matched with the arcuate portion is provided on the inner wall of the rotating cavity, and the rotating cavity is connected with a limiting sliding cavity matched with the parallel portion.

[0014] Furthermore, the limiting sliding cavity is vertically arranged relative to the downward movement direction of the rotating mold.

[0015] As a further solution of the present invention, the rotating cavity is provided with a sliding groove adapted to a rotating limit ring, the rotating limit ring is elastically arranged inside the sliding groove, the end of the rotating shaft extends out of the end of the sleeve and is provided with ratchet teeth, and the inner wall of the rotating limit ring is embedded with a limiting paddle adapted to the ratchet teeth.

[0016] Furthermore, a limit slider is provided on one side of the rotation limit ring that fits the inner wall of the sliding groove, and a limit slide groove that matches the limit slider is provided on the inner wall of the sliding groove, so that the rotation limit ring can only move up and down inside the sliding groove as the rotation limit mechanism moves, and cannot rotate. The inner wall of the limit slide cavity is a frosted surface, and the diameter of the rotation cavity is larger than the diameter of the arc portion.

[0017] As a further solution of the present invention, an electromagnetic sheet magnetically attached to the arc portion is provided at the bottom of the limiting sliding cavity, and a contact electrode is provided on one side of the electromagnetic sheet attached to the arc portion, and the contact electrode is electrically connected to the electromagnetic sheet.

[0018] Furthermore, the arc-shaped portion is made of magnetic material, and a magnetic sheet matching the arc-shaped portion is provided on the top of the rotating cavity.

[0019] As a further solution of the present invention, a cooling cavity is provided inside the rotating mold and is in contact with the molding cavity. Rotating blades are provided inside the cooling cavity and are fixedly connected to the outer end surface of the rotating shaft.

[0020] Furthermore, an insert groove is provided in the middle of the molding cavity, and the insert groove is used to place the insert by a robot.

[0021] As a further solution of the present invention, an oscillation block elastically fitted with the forming cavity is provided inside the cooling cavity, an oscillation cavity adapted to the oscillation block is opened in the middle of the rotating blade, and an oscillation plate is elastically connected inside the oscillation cavity.

[0022] Furthermore, the side of the oscillation block away from the molding cavity and the side of the oscillation plate away from the oscillation cavity are arranged in an arc shape.

[0023] When the present invention is used, the movable mold is driven downward by the injection molding machine body, and the fit between the movable mold and the rotating mold is limited by the insertion of the positioning rod and the positioning hole, and the rotating mold is fixed to prevent the rotating mold from rotating inside the rotating cavity. At the same time, the driving mechanism is driven as the positioning rod is inserted. When the injection molding machine body injects the material into the molding cavity for molding, the movable mold is separated from the rotating mold. At the same time, the driving mechanism drives the rotating mold to rotate, so that the rotating mold is turned over, and the completed molding material falls into the interior of the rotating cavity, and the molding cavity originally located at the bottom is presented to the top, so that the next injection molding process can be carried out without manual material unloading operations, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the rotary mold structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the rotary mold of the present invention;

[0028] Figure 4 It is a schematic diagram of the driving mechanism structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the driving principle of the driving mechanism of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the rotation limiting mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the inner wall of the rotating chamber of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the rotation limiting ring of the present invention;

[0033] Fig. 9 is a schematic diagram of the structure of the rotating blade of the present invention;

[0034] Fig.10 The present invention Figure 3 Enlarged structural diagram at A in the middle.

[0035] In the figure: 1. Injection molding machine body; 2. Moving mold; 3. Rotating mold; 4. Base; 5. Collecting mechanism; 6. Rotating cavity; 7. Positioning rod; 8. Positioning hole; 9. Molding cavity; 10. Insert groove; 11. Rotating shaft; 12. Rotating limiting mechanism; 13. Driving mechanism; 14. Cooling cavity; 15. Sleeve tube; 16. Coil spring; 17. Rotating blade; 18. Driving cavity; 19. Pressing plate; 20. Tooth plate; 21. Driving plate; 22. Arc-shaped part; 23. Parallel part; 24. Rotating limiting ring; 25. Sliding groove; 26. Contact electrode; 27. Electromagnetic sheet; 28. Limiting sliding cavity; 29. ​​Rotating cavity; 30. Limiting slider; 31. Ratchet teeth; 32. Limiting paddle; 33. Oscillation plate; 34. Oscillation block; 35. Oscillation cavity. DETAILED DESCRIPTION

[0036] Embodiment 1

[0037] like Figure 1-2 As shown, a loading and unloading device for vertical injection molding machine processing includes an injection molding machine body 1 and a base 4. The injection molding machine body 1 is arranged on the top of the base 4. The injection molding machine body 1 drives a movable mold 2 to move up and down. The base 4 is provided with a rotating mold 3 adapted to the movable mold 2. A rotating cavity 6 is opened on the upper end surface of the base 4. The rotating mold 3 is rotatably arranged inside the rotating cavity 6. The upper and lower end surfaces of the rotating mold 3 are both provided with molding cavities 9. A positioning rod 7 is provided at the bottom of the movable mold 2. A positioning hole 8 adapted to the positioning rod 7 is provided on the upper and lower end surfaces of the rotating mold 3. A driving mechanism 13 for driving the rotating mold 3 to rotate is provided inside the positioning hole 8.

[0038] Furthermore, four groups of positioning rods 7 are provided, which are symmetrically distributed at the four corners of the lower end surface of the movable mold 2 .

[0039] When in use, the movable mold 2 is driven downward by the injection molding machine body 1, and the fit between the movable mold 2 and the rotating mold 3 is limited by the insertion of the positioning rod 7 and the positioning hole 8, and the rotating mold 3 is fixed to prevent the rotating mold 3 from rotating inside the rotating cavity 6. At the same time, the driving mechanism 13 is driven as the positioning rod 7 is inserted. When the injection molding machine body 1 injects the material into the molding cavity 9 for molding, the movable mold 2 is separated from the rotating mold 3. At the same time, the driving mechanism 13 drives the rotating mold 3 to rotate, so that the rotating mold 3 is turned over, and then the completed molding material falls into the rotating cavity 6, and the molding cavity 9 originally at the bottom is presented to the top, so that the next injection molding process can be carried out without manual material unloading operations, and the safety is high.

[0040] Embodiment 2

[0041] Based on the first embodiment, Figure 1-5As shown, the driving mechanism 13 includes a pressing plate 19, a tooth plate 20 and a driving plate 21. A driving cavity 18 adapted to the driving mechanism 13 is opened inside the rotating mold 3. The driving cavity 18 is connected to the positioning hole 8. The pressing plate 19 is elastically connected to the inside of the driving cavity 18. The driving plate 21 is fixedly connected to the side of the pressing plate 19 away from the positioning hole 8. The tooth plate 20 is elastically embedded in the side end surface of the driving plate 21. The tooth plate 20 is in contact with the outer end surface of the rotating shaft 11. The outer end surface of the rotating shaft 11 is provided with a tooth groove adapted to the tooth plate 20.

[0042] Furthermore, a circular plate matched with the positioning hole 8 is provided at the end of the pressing plate 19 , and a plurality of driving mechanisms 13 are provided and symmetrically arranged, and the plurality of driving mechanisms 13 are all used to drive the rotating shaft 11 to rotate in the same direction.

[0043] like Figure 1-3 As shown in Figures 6-8, a rotating shaft 11 is rotatably provided in the middle of the rotating mold 3. The rotating shaft 11 is elastically connected to the rotating mold 3 through a coil spring 16. The rotating shaft 11 penetrates the rotating mold 3 and extends to the inside of the rotating cavity 6. A rotating limit ring 24 is provided inside the rotating cavity 6 to limit the unidirectional rotation of the rotating shaft 11.

[0044] Furthermore, the rotating cavity 6 is arc-shaped, and a collecting mechanism 5 connected to the bottom of the rotating cavity 6 is provided inside the base 4. After the plastic parts fall into the rotating cavity 6 as the rotating mold 3 flips over, they slide along the rotating cavity 6 to the inside of the collecting mechanism 5 for collection, thereby preventing the plastic parts from accumulating inside the rotating cavity 6 and affecting the rotation of the rotating mold 3.

[0045] When in use, as the positioning rod 7 is inserted into the positioning hole 8, the positioning rod 7 will press the pressing plate 19 to slide inside the driving cavity 18, so that the driving plate 21 at the bottom of the pressing plate 19 slides relative to the rotating shaft 11, and the toothed plate 20 on the side end face of the driving plate 21 drives the rotating shaft 11 to rotate, and the toothed plate 20 is elastically arranged inside the driving plate 21, and the rotating shaft 11 can only rotate in one direction due to the limitation of the rotating limit ring 24, thereby realizing the rotation of the rotating mold 3 driven by the driving mechanism 13. When the positioning rod 7 moves downward, the rotating shaft 11 will be unable to rotate due to the limitation of the rotating limit ring 24, and the toothed plate 20 will It is pressed into the interior of the driving plate 21. When the positioning rod 7 moves upward, the pressing plate 19 moves upward in the driving cavity 18 under the action of elastic force, so that the tooth plate 20 drives the rotating shaft 11 to rotate, thereby storing energy for the coil spring 16 between the rotating shaft 11 and the driving mechanism 13. When the positioning rod 7 is disengaged from the positioning hole 8, the limiting effect of the positioning rod 7 on the rotating mold 3 is eliminated, so that the elastic potential energy inside the coil spring 16 is released to drive the rotating mold 3 to rotate, thereby completing the turning over of the rotating mold 3, and the material inside the molding cavity 9 falls into the rotating cavity 6 by gravity, while the rotating mold 3 can directly perform the next injection molding operation.

[0046] Embodiment 3

[0047] Based on the first and second embodiments, Figure 1-8 As shown, a rotation limiting mechanism 12 is sleeved on the end of the rotating shaft 11, and the rotation limiting mechanism 12 includes a sleeve tube 15, an arcuate portion 22 and a parallel portion 23. The sleeve tube 15 is sleeved on the end of the rotating shaft 11, and the sleeve tube 15 is fixedly connected to the side end surface of the rotating mold 3. There are two groups of arcuate portions 22 and parallel portions 23, and the arcuate portions 22 and the parallel portions 23 are symmetrically arranged at one end of the sleeve tube 15 away from the rotating mold 3. A rotating cavity 29 matched with the arcuate portion 22 is provided on the inner wall of the rotating cavity 6, and the rotating cavity 29 is connected to a limiting sliding cavity 28 matched with the parallel portion 23.

[0048] Furthermore, the limiting sliding cavity 28 is vertically arranged relative to the downward movement direction of the rotating mold 3 .

[0049] like Figure 1-8 As shown, the rotating cavity 6 is provided with a sliding groove 25 adapted to the rotating limit ring 24, the rotating limit ring 24 is elastically arranged inside the sliding groove 25, the end of the rotating shaft 11 extends out of the end of the sleeve 15 and is provided with ratchet teeth 31, and the inner wall of the rotating limit ring 24 is embedded with a limit paddle 32 adapted to the ratchet teeth 31.

[0050] Furthermore, a limit slider 30 is provided on one side of the rotation limit ring 24 that fits the inner wall of the sliding groove 25, and a limit slide groove compatible with the limit slider 30 is provided on the inner wall of the sliding groove 25, so that the rotation limit ring 24 can only move up and down inside the sliding groove 25 as the rotation limit mechanism 12 moves, and cannot rotate. The inner wall of the limit slide cavity 28 is a frosted surface, and the diameter of the rotation cavity 29 is larger than the diameter of the arc-shaped portion 22.

[0051] When in use, in order to avoid the collision between the rotating mold 3 and the positioning rod 7 when the positioning rod 7 is disengaged from the positioning hole 8, a rotation limiting mechanism 12 is further provided. When the positioning rod 7 is moving downward, the pressing plate 19 will be pressed against the rotating mold 3, so that the rotation limiting mechanism 12 at the end of the driving mechanism 13 slides from the rotating cavity 29 to the inside of the limiting sliding cavity 28. At this time, the limiting sliding cavity 28 will fit with the parallel portion 23, thereby limiting the rotation of the sleeve 15, and further limiting the rotation of the rotating mold 3. At this time, as the positioning rod 7 continues to move, the coil spring 16 between the rotating shaft 11 and the rotating mold 3 will be stored. When the positioning rod 7 is disengaged, The limit slide cavity 28 slowly moves upward under the friction between the parallel portion 23 and the elastic force of the sliding groove 25 on the rotation limit ring 24. When the sleeve tube 15 moves to the inside of the rotation cavity 29, the limit slide cavity 28 will be disengaged from the parallel portion 23. At this time, the arc portion 22 can rotate inside the rotation cavity 29, so that the limit on the rotation mold 3 is cancelled at this time. The rotation mold 3 can be rotated to complete the flipping under the elastic action of the coil spring 16, and the rotation limit ring 24 is provided with a limit paddle 32 and the ratchet teeth 31 on the outer end surface of the rotation shaft 11 to limit the rotation of the rotation shaft 11 in one direction, and the limiting direction is opposite to the driving direction of the rotation shaft 11 by the driving mechanism 13.

[0052] like Figure 1-8 As shown, an electromagnetic sheet 27 that is magnetically attached to the arc portion 22 is provided at the bottom of the limiting sliding cavity 28 , and a contact electrode 26 is provided on one side of the electromagnetic sheet 27 that is attached to the arc portion 22 , and the contact electrode 26 is electrically connected to the electromagnetic sheet 27 .

[0053] Furthermore, the arc-shaped portion 22 is made of a magnetic material, and a magnetic sheet matching the arc-shaped portion 22 is provided on the top of the rotating cavity 29 .

[0054] During use, in order to prevent the rotating shaft 11 from being worn and causing its delay effect to be uncontrollable, an electromagnetic sheet 27 is provided. When the arc portion 22 moves to fit with the bottom of the electromagnetic sheet 27, the contact electrode 26 will trigger the electromagnetic sheet 27 to magnetically adsorb the arc portion 22. By setting a corresponding delay program, the electromagnetic sheet 27 is disconnected after a delay of a period of time, so that the arc portion 22 can move up again until it enters the interior of the rotating chamber 29. A magnetic sheet is provided inside the rotating chamber 29 so that after the arc portion 22 rotates half a circle, the rotating mold 3 can be in a horizontal state through the adsorption of the magnetic sheet, thereby reducing the situation where the rotating mold 3 deflects too much or too little.

[0055] Embodiment 4

[0056] Based on the first, second and third embodiments, Figure 1-3 As shown in FIGS. 9-10 , a cooling cavity 14 is provided inside the rotating mold 3 to fit the molding cavity 9 . Rotating blades 17 are provided inside the cooling cavity 14 . The rotating blades 17 are fixedly connected to the outer end surface of the rotating shaft 11 .

[0057] Furthermore, an insert groove 10 is provided in the middle of the molding cavity 9, and the insert groove 10 is used to place an insert or the like by a robot.

[0058] When in use, a cooling chamber 14 is provided so that the material inside the molding chamber 9 can accelerate the molding of the plastic part after injection molding. A rotating blade 17 is provided inside the cooling chamber 14. The rotating blade 17 disturbs the liquid inside the cooling chamber 14 as the rotating shaft 11 rotates, thereby accelerating the cooling and molding speed of the molding chamber 9. When in use, molding chambers 9 are symmetrically provided at the upper and lower ends of the rotating mold 3. When the top molding chamber 9 is injected, the bottom molding chamber 9 is vacant, so that the temperature of the coolant in the bottom molding chamber 9 is relatively low. The disturbance of the rotating blade 17 can reduce the temperature at the bottom of the cooling chamber 14, and the cooling medium moves upward to further accelerate the cooling of the insert inside the molding chamber 9. This cooling method can be achieved without an additional power source.

[0059] like Figure 1-3 As shown in Figures 9-10, an oscillation block 34 elastically fitted with the molding cavity 9 is provided inside the cooling cavity 14, an oscillation cavity 35 adapted to the oscillation block 34 is opened in the middle of the rotating blade 17, and an oscillation plate 33 is elastically connected to the inside of the oscillation cavity 35.

[0060] Furthermore, the side of the oscillation block 34 facing away from the molding cavity 9 and the side of the oscillation plate 33 facing away from the oscillation cavity 35 are arranged in an arc shape.

[0061] During use, as the rotating shaft 11 drives the rotating blade 17 to rotate, an oscillation plate 33 and an oscillation block 34 are provided, and the oscillation block 34 is elastically arranged at the bottom plate of the molding cavity 9, especially at the bottom plate of the insert groove 10, and the oscillation plate 33 is elastically embedded in the inside of the oscillation cavity 35, so that when the rotating shaft 11 rotates, the oscillation plate 33 will intermittently collide with the oscillation block 34 to generate oscillation on the bottom of the insert groove 10, and the oscillation effect can drive the material distribution inside the molding cavity 9 on the upper end surface of the rotating mold 3 to be more uniform, and at the same time, the molded plastic parts inside the molding cavity 9 on the lower end surface of the rotating mold 3 can be quickly detached to avoid the adhesion of the plastic parts and the molding cavity 9.

[0062] Working principle: The movable mold 2 is driven downward by the injection molding machine body 1, and the fit between the movable mold 2 and the rotating mold 3 is limited by the insertion of the positioning rod 7 and the positioning hole 8, and the rotating mold 3 is fixed to prevent the rotating mold 3 from rotating inside the rotating cavity 6. At the same time, the driving mechanism 13 is driven as the positioning rod 7 is inserted. When the injection molding machine body 1 injects the material into the molding cavity 9 for molding, the movable mold 2 is separated from the rotating mold 3. At the same time, the driving mechanism 13 drives the rotating mold 3 to rotate, so that the rotating mold 3 is turned over, and the completed molding material falls into the rotating cavity 6, and the molding cavity 9 originally located at the bottom is presented to the top, so that the next injection molding process can be carried out, and there is no need for manual material unloading operation, which is highly safe. The rod 7 is inserted into the positioning hole 8, and the positioning rod 7 presses the pressing plate 19 to slide inside the driving cavity 18, so that the driving plate 21 at the bottom of the pressing plate 19 slides relative to the rotating shaft 11, and the toothed plate 20 on the side end face of the driving plate 21 drives the rotating shaft 11 to rotate, and the toothed plate 20 is elastically arranged inside the driving plate 21, and the rotating shaft 11 can only rotate in one direction due to the limitation of the rotating limit ring 24, so as to realize the rotation of the rotating mold 3 driven by the driving mechanism 13. When the positioning rod 7 moves downward, the rotating shaft 11 will not be able to rotate due to the limitation of the rotating limit ring 24, and the toothed plate 20 will be pressed into the inside of the driving plate 21. When the positioning rod 7 moves upward, the pressing plate 19 moves upward inside the driving cavity 18 under the action of the elastic force, so that the toothed plate 20 drives the rotating shaft 1 1 rotates, thereby storing energy for the coil spring 16 between the rotating shaft 11 and the driving mechanism 13. When the positioning rod 7 is separated from the positioning hole 8, the limit of the rotating mold 3 by the positioning rod 7 is eliminated, so that the elastic potential energy inside the coil spring 16 is released to drive the rotating mold 3 to rotate, thereby completing the turning over of the rotating mold 3, and the material inside the molding cavity 9 falls into the rotating cavity 6 with gravity, while the rotating mold 3 can directly perform the next injection molding operation. In order to avoid the collision between the rotating mold 3 and the positioning rod 7 when the positioning rod 7 is separated from the positioning hole 8, a rotation limiting mechanism 12 is further provided. When the positioning rod 7 is in the process of moving downward, the pressing plate 19 will be pressed first, and the pressing plate 19 will press the rotating mold 3, so that the rotation limiting mechanism 12 at the end of the driving mechanism 13 is rotated. The movable cavity 29 slides to the inside of the limiting sliding cavity 28. At this time, the limiting sliding cavity 28 will fit with the parallel part 23, thereby limiting the rotation of the sleeve tube 15, and further limiting the rotation of the rotating mold 3. At this time, as the positioning rod 7 continues to move, the coil spring 16 between the rotating shaft 11 and the rotating mold 3 will be stored. When the positioning rod 7 is disengaged, it slowly moves up under the friction between the limiting sliding cavity 28 and the parallel part 23 and the elastic force of the sliding groove 25 on the rotating limiting ring 24. When the sleeve tube 15 moves to the inside of the rotating cavity 29, the limiting sliding cavity 28 will be disengaged from the parallel part 23. At this time, the arc portion 22 can rotate inside the rotating cavity 29, so that the limit on the rotating mold 3 is cancelled at this time, and the rotating mold 3 can rotate under the elastic action of the coil spring 16 to complete the flipping.The rotation limit ring 24 is provided with a limit paddle 32 and a ratchet tooth 31 on the outer end surface of the rotating shaft 11 to limit the rotation of the rotating shaft 11 in one direction, and the limit direction is opposite to the driving direction of the rotating shaft 11 by the driving mechanism 13. In order to avoid the wear of the rotating shaft 11 causing its delay effect to be uncontrollable, an electromagnetic sheet 27 is provided. When the arc portion 22 moves to fit with the bottom of the electromagnetic sheet 27, the contact electrode 26 will be triggered to make the electromagnetic sheet 27 magnetically absorb the arc portion 22. By setting a corresponding delay program, the electromagnetic sheet 27 is delayed by a certain amount. After a period of time, the adsorption is disconnected, so that the arc portion 22 can move up again until it enters the inside of the rotating cavity 29, and a magnetic sheet is provided inside the rotating cavity 29 so that after the arc portion 22 rotates half a circle, the rotating mold 3 can be in a horizontal state through the adsorption of the magnetic sheet, thereby reducing the situation where the rotating mold 3 deflects too much or too little. By providing a cooling cavity 14, the material inside the molding cavity 9 can accelerate the molding of the plastic part after injection molding. The inside of the cooling cavity 14 is provided with a rotating blade 17, and the rotating blade 17 rotates with the rotation of the rotating shaft 11. The liquid disturbance inside the cooling cavity 14 accelerates the cooling and molding speed of the molding cavity 9, and the molding cavities 9 are symmetrically arranged at the upper and lower ends of the rotating mold 3 when in use. When the top molding cavity 9 is injected, the bottom molding cavity 9 is vacant, so that the temperature of the coolant in the bottom molding cavity 9 is relatively low. The disturbance of the rotating blades 17 can reduce the temperature at the bottom of the cooling cavity 14, and the cooling medium moves upward to further accelerate the cooling of the insert inside the molding cavity 9. This cooling method can be achieved without an additional power source. As the rotating shaft 11 drives the rotating blades 17 to rotate, an oscillation plate 33 and an oscillation block 34 are provided, and the oscillation block 34 is elastically arranged at the bottom plate of the molding cavity 9, especially at the bottom plate of the insert groove 10. The oscillation plate 33 is elastically embedded in the inside of the oscillation cavity 35, so that when the rotating shaft 11 rotates, the oscillation plate 33 will intermittently collide with the oscillation block 34 to generate an oscillation on the bottom of the insert groove 10. The oscillation effect can drive the material distribution inside the molding cavity 9 on the upper end surface of the rotating mold 3 to be more uniform, and at the same time, the molded plastic parts inside the molding cavity 9 on the lower end surface of the rotating mold 3 can be quickly separated to avoid the adhesion of the plastic parts to the molding cavity 9. ,

Claims

1. A loading and unloading device for vertical injection molding machine processing, comprising an injection molding machine body and a base, wherein the injection molding machine body is arranged on the top of the base, the injection molding machine body drives a movable mold that moves up and down, and the base is provided with a rotating mold adapted to the movable mold, characterized in that: A rotating cavity is provided on the upper end surface of the base, the rotating mold is rotatably arranged inside the rotating cavity, the upper end surface and the lower end surface of the rotating mold are both provided with molding cavities, a positioning rod is provided at the bottom of the movable mold, and the upper end surface and the lower end surface of the rotating mold are both provided with positioning holes adapted to the positioning rod, and a driving mechanism for driving the rotating mold to rotate is provided inside the positioning hole.

2. The loading and unloading device for vertical injection molding machine according to claim 1 is characterized in that: The driving mechanism includes a pressing plate, a tooth plate and a driving plate. A driving cavity adapted to the driving mechanism is provided inside the rotating mold, and the driving cavity is communicated with the positioning hole. The pressing plate is elastically connected inside the driving cavity, and the driving plate is fixedly connected to the side of the pressing plate away from the positioning hole. The tooth plate is elastically embedded in the side end face of the driving plate, and the tooth plate is fitted with the outer end face of the rotating shaft. The outer end face of the rotating shaft is provided with a tooth groove adapted to the tooth plate.

3. The loading and unloading device for vertical injection molding machine according to claim 2 is characterized in that: A rotating shaft is rotatably arranged in the middle of the rotating mold, and the rotating shaft is elastically connected to the rotating mold through a coil spring. The rotating shaft penetrates the rotating mold and extends to the inside of the rotating cavity. A rotating limit ring is arranged inside the rotating cavity to limit the unidirectional rotation of the rotating shaft.

4. The loading and unloading device for vertical injection molding machine according to claim 3 is characterized in that: A rotation limiting mechanism is sleeved on the end of the rotating shaft, and the rotation limiting mechanism includes a sleeve tube, an arcuate portion and a parallel portion. The sleeve tube is sleeved on the end of the rotating shaft, and the sleeve tube is fixedly connected to the side end surface of the rotating mold. Two groups of the arcuate portion and the parallel portion are provided, and the arcuate portion and the parallel portion are symmetrically arranged at one end of the sleeve tube away from the rotating mold. A rotating cavity matched with the arcuate portion is provided on the inner wall of the rotating cavity, and the rotating cavity is connected with a limiting sliding cavity matched with the parallel portion.

5. The loading and unloading device for vertical injection molding machine according to claim 4 is characterized in that: The rotating cavity 6 is provided with a sliding groove 25 adapted to the rotating limit ring 24, the rotating limit ring is elastically arranged inside the sliding groove, the end of the rotating shaft extends out of the end of the sleeve and is provided with ratchet teeth, and the inner wall of the rotating limit ring is embedded with a limit paddle adapted to the ratchet teeth.

6. The loading and unloading device for vertical injection molding machine according to claim 4, characterized in that: An electromagnetic sheet which is magnetically attached to the arc-shaped portion is provided at the bottom of the position-limiting sliding cavity, and a contact electrode is provided on one side of the electromagnetic sheet which is attached to the arc-shaped portion, and the contact electrode is electrically connected to the electromagnetic sheet.

7. The loading and unloading device for vertical injection molding machine according to claim 3 is characterized in that: A cooling cavity which is in contact with the forming cavity is provided inside the rotating mold, and rotating blades are provided inside the cooling cavity. The rotating blades are fixedly connected to the outer end surface of the rotating shaft.

8. The loading and unloading device for vertical injection molding machine according to claim 7, characterized in that: An oscillating block elastically fitted with the forming cavity is arranged inside the cooling cavity, an oscillating cavity adapted to the oscillating block is opened in the middle of the rotating blade, and an oscillating plate is elastically connected inside the oscillating cavity.

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