WO2017016418A1

WO2017016418A1 - Multi-station injection moulding machine

Info

Publication number: WO2017016418A1
Application number: PCT/CN2016/090521
Authority: WO
Inventors: 范开贤
Original assignee: 现代精密塑胶模具（深圳）有限公司
Priority date: 2015-07-29
Filing date: 2016-07-19
Publication date: 2017-02-02
Also published as: CN204820144U

Abstract

Disclosed is a multi-station injection moulding machine, which comprises a machine rack (10), an upper moulding plate (20) located above the machine rack (10) and a lifting mechanism (40) driving the upward and downward movement of the upper moulding plate (20), wherein an injection device (60) is provided above the upper moulding plate (20), the machine rack (10) is also provided with a lower moulding plate (30) located below the upper moulding plate (20) and a rotating mechanism (50) driving the rotation of the lower moulding plate (30), the upper moulding plate (20) is provided with a fixed mould mounting station (21), and the lower moulding plate (30) is provided with a plurality of moving mould mounting stations (31) respectively corresponding to the fixed mould mounting station (21) during the rotation. A plurality of moving moulds (90) can be mounted at the same time by providing a plurality of moving mould mounting stations (31), the plurality of moving moulds (90) can perform a plurality of working procedures at the same time, thereby saving time in the whole period of injection moulding, improving the efficiency of injection moulding, and reducing the costs of injection moulding.

Description

Multi-station injection molding machine

[0001] The present invention relates to the field of injection molding machines, and more particularly to a multi-station injection molding machine.

Background technique

[0002] An injection molding machine, also known as an injection molding machine or an injection machine, is capable of forming a thermoplastic or thermosetting plastic into a main molding apparatus of plastic products of various shapes using a plastic molding die. In the existing injection molding machine, the usual injection molding mode is a single-station, that is, a fixed-mode configuration of a dynamic mold. Among them, the injection cycle is generally: implant (one process involved in injection molding), injection molding, heat preservation, cooling and ejection. The existing single-station injection molding machine is used for injection molding. All the injection molding cycles are concentrated in one fixed mold and one dynamic mold. The next step must be completed in the previous step. In particular, during the cooling process, it is necessary to stay for a long period of time. This process cannot be carried out in other processes. The entire injection cycle is completed in a long period of time, the production efficiency is low, and the production process is invested. The daytime, manpower and material resources increase correspondingly, and the production cost is high.

technical problem

[0003] The object of the present invention is to provide a multi-station injection molding machine with high injection efficiency and capable of saving day, manpower and material resources in view of the deficiencies of the prior art.

Problem solution

Technical solution

[0004] In order to achieve the above object, the technical solution of the present invention is: a multi-station injection molding machine, comprising: a frame, an upper template located above the frame, and a lifting mechanism for driving the upper template up and down, the upper template An injection device is disposed above the frame, the frame is further provided with a lower template under the upper template and a rotating mechanism for driving the lower template to rotate, the upper template is provided with a fixed mold mounting position, and the lower template is provided with a rotation多个 A plurality of movable mold mounting positions respectively corresponding to the fixed mold mounting positions.

[0005] Preferably, the movable mold mounting position has six and is radially distributed on the lower template.

[0006] Preferably, the rotating mechanism includes a motor, a driving gear that is drivingly coupled to the motor, and an external gear formed on an outer circumference of the lower die plate, and the external gear is meshed with the driving gear. [0007] Preferably, the movable mold mounting position is provided with an ejector hole, and an ejector cylinder is disposed below the ejector hole

The ejector cylinder is connected with an ejector rod corresponding to the ejector hole.

[0008] Preferably, the fixed mold mounting position is provided with an injection hole, and the injection device includes a nozzle, and the nozzle is located above the injection hole.

[0009] Preferably, the lifting mechanism includes a lifting cylinder, a lifting auxiliary plate and a plurality of lifting guide shafts, wherein the lifting cylinder is disposed below the lower template, and the plurality of lifting guide shafts are disposed through the machine And the two ends of the frame are respectively connected to the upper template and the lifting auxiliary plate, and the lifting auxiliary plate is drivingly connected to the lifting cylinder.

[0010] Preferably, the lifting guide shaft has three and is arranged in a triangular shape, wherein one of the lifting guide shafts is disposed in a middle portion of the lower template, and the lower template is rotated at a center of the lifting guide shaft. A bearing is disposed between the lifting guide shaft and the lower die plate.

[0011] Preferably, the bearing is a ball bearing.

[0012] Preferably, a periphery of the upper portion of the rack is provided with a protective baffle.

[0013] Preferably, the multi-station injection molding machine further includes a controller, and the lifting mechanism, the injection device, and the rotating mechanism are respectively electrically connected to the controller.

Advantageous effects of the invention

Beneficial effect

[0014] Advantageous Effects of the Invention: The multi-station injection molding machine of the present invention uses a crucible to mount a fixed mold on a fixed mold mounting position of the upper mold set, and installs a plurality of dynamic molds respectively in the lower mold set. At the movable mold installation position, the starting work is performed, and the lifting mechanism drives the lower template to make the fixed mold cooperate with one of the movable molds mounted on the lower template. Thereafter, the injection device injects the molten plastic into the fixed mold and the movable mold. Between, the lifting device drives the upper template again to drive the fixed mold to rise, and the rotation mechanism drives the lower template to rotate, so that another moving mold mounted on the lower template moves to a lower position corresponding to the fixed mold, and the lifting mechanism drives the upper template again. The mold is lowered to cooperate with the movable mold, and the injection device performs the injection of the molten plastic again, and sequentially circulates, ensuring that each movable mold is plastically injection-molded one by one with the fixed mold. The multi-station injection molding machine of the invention can simultaneously install a plurality of movable molds through a plurality of movable mold mounting positions, and the plurality of dynamic molds can share the same process for multiple operations, thereby saving the entire injection molding cycle and improving the injection molding. Efficiency, saving a lot of time, manpower and material resources, injection molding costs will be greatly reduced, input costs will be reduced, and competitiveness in the market will be enhanced. Brief description of the drawing

DRAWINGS

1 is a schematic structural view of the present invention.

2 is a schematic structural view of a fixed mold and a movable mold 安装 installed in the present invention.

3 is another schematic structural view of a fixed mold and a movable mold 安装 installed in the present invention.

4 is a schematic structural view of an upper template of the present invention.

5 is a schematic structural view of a lower template of the present invention.

6 is a schematic structural view of a hidden part of the present invention.

[0021] FIG. 7 is another schematic structural view of a hidden part of the present invention.

[0022] The reference numerals include:

[0023] 10—Rack 11_ Protective baffle 20_Upper template

[0024] 21_ fixed mold mounting position 22_injection hole 30_ lower template

[0025] 31_moving mold mounting position 32_ejection hole 33-bearing

[0026] 40_ lifting mechanism 41_ lifting cylinder 42_ lifting auxiliary board

[0027] 43—lifting guide shaft 50_rotating mechanism 51_motor

[0028] 52_ drive gear 53_ external gear 60_injection device

[0029] 61—nozzle 70_ejection cylinder 71_ejection rod

[0030] 80 - fixed mode 90 - dynamic mode 100_ controller.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0032] It should be noted that the left, right, top, bottom, top, bottom and other orientation terms in this embodiment are only relative concepts or reference to the normal use state of the product, and should not be considered. Is restrictive

[0033] As shown in FIG. 1 to FIG. 7 , a multi-station injection molding machine provided by an embodiment of the present invention includes a rack 10 and is located in a rack. An upper template 20 above the 10 and a lifting mechanism 40 for driving the upper template 20 up and down, an injection device 60 is disposed above the upper template 20, and the frame 10 is further provided with a lower template 30 located below the upper template 20 and used for driving The rotating mechanism 50 for rotating the lower die plate 30, the upper die plate 20 is provided with a fixed die mounting position 21 (see FIG. 4), and the lower die plate 30 is provided with a plurality of movable die mounting positions 31 corresponding to the rotating die and the fixed die mounting position 21 respectively ( See Figure 5)

[0034] Specifically, the upper template 20 is located above the center of the lower template 30, the fixed mold mounting position 21 is located on the bottom surface of the upper template 20, and the movable mold mounting position 31 is located at the top surface of the lower template 30; It is ensured that the lower die plate 30 is driven by the rotating mechanism 50, and the plurality of movable die mounting positions 31 provided with the lower die plate 30 can correspond to the positions of the fixed die mounting positions 21 provided one by one with the upper die plate 20 one by one.

[0035] The multi-station injection molding machine of the present embodiment can be used in combination with a plurality of fixed molds 80 and movable molds 90.

[0036] Referring to FIG. 2 and FIG. 3, the fixed mold mounting position 21 and the movable mold mounting position 31 may be provided with a plurality of small holes for respectively fixing the fixed mold 80 and the movable mold 90, the fixed mold 80 and the movable mold 90. It can be mounted on the small holes by screws or bolts, which can effectively meet the installation of fixed-size 80 and movable mold 90 of different sizes, and meet the requirements of different injection molding sizes and shapes. It is very flexible and has a wide application range.

[0037] Using a weir, a fixed mold 80 is mounted on the fixed mold mounting position 21 of the upper die plate 20, and a plurality of movable molds 90 are respectively mounted on the plurality of movable mold mounting positions 31 of the lower die plate 30, for example, Three movable molds 90, four movable molds 90, five movable molds 90, six movable molds 90, and the like can be installed. When the installation of the fixed mold 80 and the movable mold 90 is completed, the operation of the injection molding machine can be started, and the work is performed, and the lifting mechanism 40 drives the upper die plate 20 to be lowered so as to be mounted on the fixed mold 80 and the lower mold 30 of the fixed mold mounting position 21. One of the movable molds 90 mounted in the movable mold mounting position 31 is fitted, and the fixed mold 80 and the movable mold 90 are formed with a cavity for molding the product. Thereafter, the injection device 60 injects the molten plastic into the fixed mold 80 and In the cavity between the movable molds 90, the lifting device drives the upper die plate 20 to drive the fixed die 80 to rise again. Similarly, the rotating mechanism 50 drives the lower die plate 30 to rotate so that another movable die 90 mounted on the lower die plate 30 is moved to the fixed position. The lower position corresponding to the die 80, the lifting mechanism 40 drives the upper die plate 20 again to drive the fixed die 80 to descend and cooperate with the movable die 90, and the injection device 60 performs the injection of the molten plastic again, sequentially circulating, ensuring that each of the movable molds 90 is fixed one by one. The mold 80 is used for plastic injection molding.

[0038] Obviously, the plurality of station injection moldings formed by the present invention can realize the same division of labor of the plurality of movable molds 90, so that one movable mold 90 can realize implantation, and one dynamic mold 90 can realize injection molding and protection, one or more. The movable mold 90 realizes air cooling, and a movable mold 90 realizes ejection, and is distributed by a plurality of movable molds 90, thereby saving injection molding. Cycle. The cost of injection molding will also be greatly reduced, which is reflected in the cost of mold savings of N-1 fixed molds 80, where N is the number of multi-station; that is, injection molding capacity that would otherwise be required to achieve multiple injection molding machines, only The multi-station injection molding machine of the invention can be realized, so that the related expenses such as capital, plant, utility and electric power, and the number of people operating the injection molding machine are correspondingly reduced, and the production capacity is increased and the benefit is increased, which can be effective. Promote competitiveness in the market.

[0039] The injection molding cycle generally includes five processes of implanting (one process of implant molding), injection molding, heat preservation, cooling, and ejection. In this embodiment, the movable mold mounting position 31 is preferably set to six, and six The movable mold mounting positions 31 are radially distributed on the top surface of the lower mold 30. Specifically, the six movable mold mounting positions 31 are respectively mounted with a movable mold 90, and the working jaws can realize the implantation of one movable mold 90, one movable mold 90 realizes injection molding and protection, and one or more movable molds 90 realize air. Cooling, a moving mold 90 realizes ejection, apportioning work, and evenly distributing and installing six movable molds 90 is more convenient to control the rotation width of the lower template 30 by the rotating mechanism 50, and it is convenient to work according to the set rotation amplitude of the lower template 30.

[0040] In the present embodiment, as shown in FIG. 6, the rotating mechanism 50 includes a motor 51, a driving gear 52 that is drivingly coupled to the motor 51, and an external gear 53 formed on the outer periphery of the lower die plate 30. The outer gear 53 meshes with the driving gear 52. connection. Specifically, the driving gear 52 connected to the main shaft is driven to rotate by the spindle rotation of the motor 51, and the driving gear 52 directly drives the lower die plate 30 to rotate through the external gear 53 meshed with the driving mechanism, and the lower die plate 30 rotates and drives the mounting and moving molds. The movable mold 90 of the mounting position 31 is rotated to drive the plurality of movable molds 90 to rotate, respectively corresponding to the position of the fixed mold 80.

[0041] Of course, the rotating mechanism 50 is not limited to the above several components, and the rotating mechanism 50 formed by the servo motor and the speed reducer is also suitable for driving the lower die 30 to rotate.

[0042] In this embodiment, the ejector hole 32 is provided at the movable mold mounting position 31, and one of the ejector holes 32 is shown in FIG. 5. Referring to FIG. 6 and FIG. 7, the ejector hole 32 is disposed below. There is an ejector cylinder 70, and an ejector rod 71 corresponding to the ejector hole 32 is connected to the ejector cylinder 70. Specifically, when the ejector process is performed, the ejector cylinder 70 expands and contracts with the ejector rod 71 connected thereto by controlling the expansion and contraction of the piston rod. During the ascent of the ejector rod 71, the ejector rod 71 is driven from the movable mold mounting position 31. The ejector hole 32 is provided to eject the injection molded product. among them.

[0043] The ejector mechanism in this embodiment is not limited to the power source by the ejector cylinder 70, and other power sources that can control the expansion and contraction of the ejector rod 71 can be used. For example, the ejector cylinder 70 can be replaced by a cylinder. The telescopic movement of the ejector rod 71 can be controlled. In the present embodiment, the injection molding hole 22 is provided at the fixed mold mounting position 21, and as shown in FIG. 4 and FIG. 6, the injection device 60 includes a nozzle 61 which is located above the injection hole 22. Specifically, the setting of the injection hole 22 facilitates the injection of the molten plastic into the matched fixed mold 80 and the movable mold 90 through the injection hole 22, and the design of the injection device 60 facilitates the installation of the injection device 60, and the design is ingenious. The structure of the multi-station injection molding machine is made more compact, and the space occupied by the multi-station injection molding machine can be reduced accordingly.

[0045] In addition, the injection device 60 further includes components such as an injection base, an injection piston rod, a transmission shaft, an oil motor, and a screw. The injection device 60 is a commonly used injection molding tool in the technical field, and detailed description thereof will not be repeated here.

[0046] Referring to FIG. 6, in the embodiment, the lifting mechanism 40 includes a lifting cylinder 41, a lifting auxiliary plate 42 and a plurality of lifting guide shafts 43. The lifting cylinder 41 is disposed below the lower die plate 30, and the plurality of lifting guide shafts 43 are worn. It is disposed on the frame 10 and is connected to the upper die plate 20 and the lifting auxiliary plate 42 at both ends, and the lifting auxiliary plate 42 is drivingly connected to the lifting cylinder 41. The lifting mechanism 40 works, the piston rod of the lifting cylinder 41 operates, and the piston rod drives the lifting auxiliary plate 42 to move up and down. Since the bottom end of each lifting guide shaft 43 is fixedly connected with the lifting auxiliary plate 42, the top end is fixedly connected with the upper template 20. That is, by driving the up and down movement of the lifting and lowering auxiliary plate 42, the lifting and lowering auxiliary plate 42 can drive the upper and lower movements of the upper die plate 20 through the plurality of lifting and guiding guide shafts 43, thereby realizing the fixed mold 80 that is fixedly mounted to the fixed mold mounting position 21. The up and down movement, in turn, allows the fixed mold 80 to cooperate with the movable mold 90 to which the movable mold mounting position 31 of the lower die plate 30 is fixed. The lift cylinder 41 is capable of generating a sufficient amount of power to drive the lift assisting plate 42 to move the upper die plate 20 up and down, and the stability of the lift cylinder 41 is very good, and accidents can be avoided.

[0047] The design of the lifting mechanism 40 of the present embodiment can ensure that the lifting cylinder 41 as a power source is disposed below the lower die plate 30 and inside the frame 10, avoiding the mounting position of the lifting mechanism 40 and the injection device 60. The installation positions overlap, effectively utilizing the space inside the frame 10, and the installation of the components does not affect each other, further making the structure of the entire multi-station injection molding machine compact.

[0048] In this embodiment, the lifting guide shaft 43 has three and arranged in a triangular shape, and the structural arrangement can improve the balance and stability of controlling the upper and lower movements of the upper template 20, and avoid the occurrence of one side position of the upper template 20. Tilting or the like, one of the lifting guide shafts 43 is disposed in the middle of the lower die plate 30 and the lower die plate 30 is pivoted about the lifting guide shaft 43. See FIG. 6, the lifting guide shaft 43 is disposed at the center of the lower die plate 30. Specifically, the position of the fixed mold mounting position 21 is substantially located in the middle of the three lifting guide shafts 43. When the rotating mechanism 50 controls the lower template 30 to rotate around the lifting guide shaft 43 of the lower die plate 30, the fixed mode is fixed. Installation bit 2 The position of 1 corresponds to the movable mold mounting position 31 provided at the lower die plate 30, so that the position of the fixed mold 80 fixedly mounted to the fixed mold mounting position 21 and the movable mold 90 fixedly mounted to the movable mold mounting position 31 can be ensured to each other. Correspondingly, the matching precision is high, ensuring high yield of products after subsequent injection molding.

More specifically, a bearing 33 is disposed between the elevation guide shaft 43 and the lower die plate 30. The arrangement of the bearing 33 ensures that the lower die plate 30 can be rotated about the lift guide shaft 43 that is disposed through the lower die plate 30.

[0050] wherein the bearing 33 is preferably a ball bearing, the ball bearing has a small rotational frictional resistance, and the use effect is better.

[0051] In addition, since the multi-station injection molding machine performs the injection molding work, the plurality of components thereof have a higher temperature, and the high-temperature molten plastic sprayed from the nozzle 61 of the injection device 60 may be splashed. In this embodiment, a protective baffle 11 is disposed on the periphery of the upper portion of the frame 10 of the multi-station injection molding machine, and the protective baffle 11 is surrounded by three plates to form a "door" shape, and the "door" shaped protective baffle 11 has a gap for the staff to observe the actual working state of the multi-station injection molding machine and to carry out the injection molding, etc., that is, the safety factor of the working raft of the invention can be improved, the production installation accident can be prevented, and the staff can be ensured. The working state of the actual working of the present invention and the work of taking out the injection and the like can be normally observed, and the structural design is reasonable and the practical performance is stronger.

[0052] Further, the multi-station injection molding machine of the embodiment further includes a controller 100, wherein the controller 100 can adopt a PLC controller 100, and the lifting mechanism 40, the injection device 60, and the rotating mechanism 50 are respectively electrically connected to the controller 100. connection. Specifically, the program can be programmed on the controller 100, and the controller 100 operates according to the set program, that is, the controller 100 can coordinately control the work of the lifting mechanism 40, the injection device 60, and the rotating mechanism 50 to ensure that each process is step by step. , to achieve intelligent control, high production efficiency.

[0053] In summary, the present invention has the following excellent features: 1. The multi-station injection molding machine has reasonable space utilization, and the overall structure is compact; 2. The safety factor is high, and safety accidents can be avoided; The precision of the matching is high, and the yield of the products is high. 4. The entire injection cycle is shortened and the injection efficiency is improved. 5. Intelligent control is achieved. 6. Saving a lot of time, manpower and material resources, and the cost of injection molding will be greatly reduced. The input cost is reduced, and the competitiveness in the market is enhanced; thus, it can be used in the use, and the utility of the prior art is improved and practical, and becomes a practical product.

The above content is only a preferred embodiment of the present invention, and those skilled in the art will have any changes in the specific embodiments and application scope according to the idea of the present invention, and the contents of the present specification should not be understood. To limit the invention.

Claims

Claim

The multi-station injection molding machine includes a frame, an upper template located above the frame, and a lifting mechanism for driving the upper template up and down, and an injection device is disposed above the upper template, wherein: the frame a lower template disposed under the upper template and a rotating mechanism for driving the lower template to rotate, wherein the upper template is provided with a fixed mold mounting position, and the lower template is provided with a rotating jaw corresponding to the fixed mold mounting position respectively Multiple movable mold mounting positions.

The multi-station injection molding machine according to claim 1, wherein: the movable mold mounting position is six and radially distributed to the lower mold.

The multi-station injection molding machine according to claim 1, wherein: the rotating mechanism includes a motor, a driving gear that is drivingly coupled to the motor, and an external gear formed on an outer circumference of the lower die plate, the external gear Engaged with the driving gear.

The multi-station injection molding machine according to claim 1, wherein: the movable mold mounting position is provided with an ejector hole, and an ejector cylinder is disposed below the ejector hole, and the ejector cylinder is connected There is an ejector rod corresponding to the ejector hole.

The multi-station injection molding machine according to claim 1, wherein: said fixed mold mounting position is provided with an injection hole, and said injection device includes a nozzle, said nozzle being located above said injection hole.

The multi-station injection molding machine according to claim 1, wherein: the lifting mechanism comprises a lifting cylinder, a lifting auxiliary plate and a plurality of lifting guide shafts, wherein the lifting cylinder is disposed below the lower template, and the plurality of The lifting guide shaft is disposed in the frame and is connected to the upper plate and the lifting auxiliary plate at two ends thereof, and the lifting auxiliary plate is drivingly connected to the lifting cylinder.

The multi-station injection molding machine according to claim 6, wherein: the lifting guide shaft has three and is arranged in a triangular shape, wherein one of the lifting guide shafts is disposed in a middle portion of the lower template and The lower die plate is rotated centering on the lifting guide shaft, and a bearing is disposed between the lifting guide shaft and the lower die plate.

A multi-station injection molding machine according to claim 7, wherein: said bearing is a ball bearing. [Claim 9] The multi-station injection molding machine according to any one of claims 1 to 8, characterized in that: a periphery of the upper portion of the frame is provided with a protective baffle.

[Claim 10] The multi-station injection molding machine according to any one of claims 1 to 8, further comprising: a controller, the lifting mechanism, the injection device, and the rotating mechanism respectively The controller is electrically connected.