CN220113873U

CN220113873U - Lifting die device for injection molding machine

Info

Publication number: CN220113873U
Application number: CN202321725309.8U
Authority: CN
Inventors: 覃启雄
Original assignee: Guangdong Multi Tech Machinery Co ltd
Current assignee: Guangdong Multi Tech Machinery Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-12-01
Anticipated expiration: 2033-07-03

Abstract

The utility model discloses a mould lifting device for an injection molding machine, which comprises a mould supporting mechanism, wherein the mould supporting mechanism comprises a plurality of universal balls movably arranged on a lower fixed template, and springs are sleeved at the lower parts of the universal balls; the mould lifting mechanism comprises a push rod which can penetrate through the lower fixed template, the push rod is fixed on the lifting template, a plurality of guide rods are penetrated on the lifting template and are located below the lower fixed plate, the guide rods are installed on the bottom plate and are located on the guide rods of the middle portion, double-cylinder combination plates are movably sleeved with the guide rods, the end portions of two piston rods are embedded in the double-cylinder combination plates, the other ends of the piston rods are located in a cylinder body of the horizontal cylinder, the end portions of the cylinder body are hinged with two connecting rods, the connecting rods are rotatably connected with mounting seats, the mounting seats are fixed on the lifting template or the bottom plate, the cylinder body is pushed outwards through oiling of the horizontal cylinder to move, and then the height of the lifting template and the horizontal cylinder are synchronously lifted. The device is convenient for die loading on the injection molding machine, and can rapidly improve the ejection speed of the ejector rod.

Description

Lifting die device for injection molding machine

Technical Field

The utility model relates to the technical field of improvement of auxiliary die-filling equipment of injection molding machines, in particular to a die lifting device for an injection molding machine.

Background

The use of dies to obtain molds or tools for injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, etc. of various desired products is central to the modern manufacturing industry and is widely used in modern factories because it involves various aspects of manufacturing. The large mould has the characteristics of huge volume and heavy weight due to the stability requirement, so that the position of the mould is difficult to move easily. When the mold is required to be installed or moved on the injection molding machine, the work is difficult, a plurality of manual work and corresponding moving tools are required to be used, and time and labor are wasted. At present, the conventional mould lifting method adopts a sliding rail design, so that the friction force between the mould and the mould can be reduced, but the mould can only move in or out of an injection molding machine along the fixed sliding rail direction, in addition, the conventional mould lifting device is pneumatic, the lifting height cannot be flexibly controlled, when the weight of the mould is large, the pneumatic mould lifting device is easy to generate gas leakage to cause lifting failure, and the stability and flexibility in the use process are required to be improved.

In the prior art, patent with publication number of CN219239154U discloses a pneumatic mould lifter, which comprises a substrate, wherein a plurality of driving columns are arranged at the lower end of the substrate, a plurality of grooves are formed in the upper end surface of the substrate, a mould lifting mechanism is arranged in the driving columns, a pneumatic plate is arranged at the lower end of the driving columns, a plurality of gas distribution pipes are arranged at the outer side of the pneumatic plate, and an electromagnetic gas valve is arranged at the upper end of the gas distribution pipes; according to the utility model, the lifting height of the mould lifting mechanism is controlled by controlling the opening and closing of the electromagnetic air valve, namely the lifting height of the mould is controlled, the whole pneumatic mould lifter realizes flexible control of the lifting height of the mould by controlling the opening and closing of the electromagnetic air valve, the flexibility of the mould lifter in the use process is improved, and when the electromagnetic air valve is closed, the leakage path of the air can be effectively intercepted, so that the pneumatic mould lifter can ensure the lifting stability even bearing a mould workpiece with larger weight, the phenomenon of air leakage can not occur, and the phenomenon of lifting failure can be avoided.

In the technical scheme, the driving plate is lifted by supplying air to the bottom of the pneumatic plate, the air supply pipeline is provided with the electromagnetic air valve, the lifting height of the die is controlled by opening and closing the electromagnetic air valve, and the lifting of the die is directly driven by air pressure, so that the lifting height of the pneumatic die lifter and the maximum mass of the bearing die are limited by the structural bearing capacity of the electromagnetic air valve and the air pipe.

The present utility model is directed to solving one of the above problems by providing a mold lifting device for an injection molding machine.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a die lifting device for an injection molding machine, which is convenient for die assembly on the injection molding machine and can rapidly improve the ejection speed of an ejector rod.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the die supporting mechanism comprises a plurality of universal balls movably mounted on a lower fixed die plate, springs are sleeved on the lower parts of the universal balls, and the dies are supported by the aid of spring pre-pressing elasticity;

the mould lifting mechanism comprises a push rod which can penetrate through the lower fixed template, the push rod is fixed on the lifting template, a plurality of guide rods are penetrated on the lifting template and are all located below the lower fixed plate, the guide rods are installed on the bottom plate and are located at the middle part, a double-cylinder combination plate is movably sleeved on the guide rods, the double-cylinder combination plate is embedded with the end parts of two piston rods, namely, the two piston rods are fixed on the double-cylinder combination plate to move up and down along with the guide rods, the other end of each piston rod is located in a cylinder body of a horizontal cylinder, the end parts of the cylinder body are hinged with two connecting rods, the connecting rods are rotatably connected with an installation seat, the installation seat is fixed on the lifting template or the bottom plate, the cylinder body is pushed outwards through oiling of the horizontal cylinder, and then the height of the lifting template and the horizontal cylinder are lifted synchronously.

Further, a groove is formed in the lower fixing template, the lower portion of the universal ball is embedded in the groove, the upper portion of the universal ball is clamped in the groove through a pressing ring, and the height of the universal ball exposed out of the pressing ring is limited.

Further, be equipped with the lower bolster in the middle of the lower fixed plate as described above, be equipped with a plurality of dislocation arrangement's universal ball between lower bolster and the lower fixed plate, but the trompil is held at the top of universal ball in the middle of the clamping ring, lifts the mould through dislocation arrangement's universal ball, and the rolling surface that universal ball formed can significantly reduce the frictional force with between the mould to greatly reduce the die filling degree of difficulty, the mould can multi-direction free roll, simple to operate.

Furthermore, the double-cylinder combination plate is convenient for disassembling and assembling the piston rod by embedding the end part of the piston rod through the split type hole seat.

Furthermore, the split hole seat and the end part of the piston rod are both arranged in a step ring shape, and the piston rod is convenient to clamp and install and fix.

Further, the two ends of the connecting rod are respectively connected with the mounting seat and the cylinder body through the pivot shaft and the pivot hole, and the connecting rod mechanism is hinged to move conveniently.

Further, the end of the cylinder body is connected with the flange plate, the piston shaft penetrates through the flange plate and is connected with the piston, the outer diameter of the piston is larger than the diameter of the piston rod, and the outer diameter of the piston is larger than the inner diameter of the opening of the flange plate so that the piston can stop the flange plate from moving.

Further, a stop block is arranged on the bottom plate and positioned below the horizontal oil cylinder, and rib plates are arranged on the lifting template and the bottom plate.

Further, the mould lifting mechanism is arranged in the frame, the top of the frame is provided with the lower fixed template, the lower fixed template is provided with the guide post, the guide post is provided with the upper movable template in a sliding manner, the upper movable template is connected with the upper fixed plate through the lifting mechanism and the power-off brake mechanism, and the upper fixed plate is arranged at the end part of the guide post.

Further, the lifting mechanism drives the connecting shaft to drive the upper movable template to move by the lifting oil cylinder, the lifting oil cylinder is arranged on the upper fixed plate, the power-off braking mechanism comprises a gear, a rack, a power-off brake, a transmission shaft and a connecting plate, the gear is arranged on the connecting plate through the transmission shaft, the connecting plate is arranged on the upper fixed plate, the power-off brake is arranged at one end of the transmission shaft, the rack is meshed with the gear, and the lower end of the rack is connected with the upper movable template.

Compared with the prior art, the utility model has the beneficial effects that: the device is convenient for die loading on the injection molding machine, the rolling surface formed by the universal balls on the surface of the die supporting mechanism is utilized, and the friction force between the die supporting mechanism and the die is reduced, so that the die can be conveniently moved into or moved out of the injection molding machine, in addition, the lifting height of the conventional pneumatic die lifter cannot be flexibly controlled, when the weight of the die is large, the pneumatic die lifter is easy to generate gas leakage to cause the condition of lifting failure, and the die lifting mechanism adopts the design of combining a horizontal oil cylinder with a connecting rod mechanism, so that the ejection speed of an ejector rod can be rapidly improved.

Drawings

FIG. 1 is a schematic diagram of the whole machine of the present utility model;

FIG. 2 is a partial cross-sectional view at A in FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic view of the lifting assembly of FIG. 3;

FIG. 5 is an exploded view of the mold lifting mechanism of the present utility model;

FIG. 6 is a side view of the lift mechanism of the present utility model;

fig. 7 is a sectional view in the direction B-B of fig. 6.

In the figure: 1. a lower fixed template; 11. a compression ring; 12. a universal ball; 13. a spring; 2. a mould lifting mechanism; 21. a bottom plate; 22. a mounting base; 23. a connecting rod; 24. a horizontal cylinder; 241. a cylinder; 242. a piston rod; 243. a flange plate; 25. a stop block; 26. a guide rod; 27. a double-cylinder combination plate; 28. lifting a template; 29. a push rod; 3. a frame; 4. an upper movable template; 5. and (5) an upper fixing plate.

Detailed Description

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "fixed," "mounted," "connected," "disposed," and the like are to be construed broadly, e.g., when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, in a first embodiment, the mold lifting device for an injection molding machine of the present utility model includes a mold supporting mechanism, wherein the mold supporting mechanism includes a plurality of universal balls 12 movably mounted on a lower fixed mold plate 1, springs 13 are sleeved at the lower parts of the universal balls 12, and the springs 13 are preloaded to achieve a required lifting force, namely, the weight of a mold is lifted by the elasticity of the springs 13; the mould lifting mechanism 2 comprises a push rod 29 which can penetrate through the lower fixed template 1, the push rod 29 is fixed on the mould lifting plate 28, a plurality of guide rods 26 are penetrated on the mould lifting plate 28 and are all positioned below the lower fixed plate, the guide rods 26 are arranged on the bottom plate 21, double-cylinder combination plates 27 are movably sleeved on the guide rods 26 positioned in the middle, the ends of two piston rods 242 are embedded in the double-cylinder combination plates 27, the other ends of the piston rods 242 are positioned in cylinder bodies 241 of the horizontal cylinders 24, the end parts of the cylinder bodies 241 are hinged with two connecting rods 23, the connecting rods 23 are rotatably connected with mounting seats 22, the mounting seats 22 are fixed on the mould lifting plate 28 or the bottom plate 21, the cylinder bodies 241 are outwards pushed to move through oiling of the horizontal cylinders 24, and then the height of the mould lifting plates 28 is lifted and the horizontal cylinders 24 are synchronously lifted.

Further, referring to fig. 1, 3 and 4, the lifting mechanism 2 is installed in the frame 3, a lower fixed die plate 1 is provided at the top of the frame 3, a guide post is provided on the lower fixed die plate 1, an upper movable die plate 4 is slidably installed on the guide post, the upper movable die plate 4 is connected with an upper fixed plate 5 through a lifting mechanism and a power-off brake mechanism, the upper fixed plate 5 is installed at the end of the guide post, the lifting mechanism drives the upper movable die plate 4 to move by a lifting cylinder driving connecting shaft, the lifting cylinder is arranged on the upper fixed plate 5, the power-off brake mechanism is composed of a gear, a rack, a power-off brake, a transmission shaft and a connection plate, the gear is installed on the connection plate through the transmission shaft, the power-off brake is installed at one end of the transmission shaft, the rack is meshed with the gear, and the lower end of the rack is connected with the upper movable die plate 4. The power-off brake mechanism is large in transmission bearing capacity, stable in motion and long in stroke, when power-off occurs, the rotor of the power-off brake cannot rotate, the gear connected through the transmission shaft cannot rotate, the rack combined with the gear cannot move up and down, the upper movable template 4 cannot move, the power-off brake mechanism is suitable for machines (such as an injection molding machine and the like) with the movable template moving up and down, the movable template is prevented from damaging articles due to the fact that the machine is out of control under the condition of sudden power-off, safety accidents are avoided, and the protection effect is achieved.

In the second embodiment, on the basis of the technical solution of the first embodiment, for the structural design of the mold supporting mechanism, as shown in fig. 2, a groove is machined on the lower fixed mold plate 1, the lower part of the universal ball 12 is embedded in the groove, the upper part of the universal ball 12 is clamped in the groove through the compression ring 11, the compression ring 11 limits the height, the mold supporting mechanism adopts a split design, and different lifting forces can be obtained by changing the pre-pressing height of the spring 13 and the type of the spring 13, thereby adapting to different mold requirements. Further, the lower fixed plate in the middle of be equipped with the lower bolster, be equipped with a plurality of dislocation arrangement's universal ball 12 between lower bolster and the lower fixed plate, but the trompil is in the middle of the clamping ring 11 and the top of holding universal ball 12, can lift mould weight through above-mentioned dislocation arrangement's universal ball 12, and the rolling surface that universal ball 12 formed can significantly reduce with the frictional force between the mould to greatly reduce the die filling degree of difficulty, simple to operate.

In the third embodiment, based on the technical solution of the first embodiment, in a mold lifting device for an injection molding machine, as shown in fig. 5 and 7, for the structural design of the mold lifting mechanism 2, the two-cylinder combination plate 27 is embedded with the end portion of the piston rod 242 through a split type hole seat, the split type hole seat is convenient for installing the end portion of the piston rod 242, specifically, the split type hole seat and the end portion of the piston rod 242 are all set into a step ring shape, the end portions of the two piston rods 242 are all clamped in the step rings of the split type hole seat, and the step rings of the piston rods 242 are clamped on the two end portions of the split type hole seat, so that the two piston rods 242 are relatively fixed together and can synchronously move up and down along with the two-cylinder combination plate 27.

Further, the two ends of the connecting rod 23 are respectively connected with the mounting seat 22 and the cylinder body 241 through a pivot and a pivot hole, specifically, the pivot is mounted on the pivot hole through an oilless bearing, the mounting seat 22 and the cylinder body 241 are respectively provided with the pivot hole through two side-by-side opposite plates, and the end parts of the connecting rod 23 are also provided with through holes which are the same in size and matched with the pivot. In addition, the end of the cylinder 241 is connected with the flange plate 243, the piston shaft penetrates through the opening in the flange plate 243 and is connected with the piston, the outer diameter of the piston is larger than the diameter of the piston rod 242, when the cylinder is filled with oil to enable the cylinder 241 to move towards the two ends, the opening of the flange plate 243 is close to the piston until the cylinder 241 is attached together, at the moment, the cylinder 241 stops moving towards the two ends, the connecting rod 23 stops pressing outwards, the lifting template 28 cannot be lifted continuously, and at the moment, the height of the lifting template 28 is the upper limit height in the lifting process. Further, as described above, the stopper 25 is mounted on the bottom plate 21, the stopper 25 is located below the horizontal cylinder 24, when the cylinder stops oiling and shrinking, the cylinder body 241 moves toward the middle double-cylinder combining plate 27, the connecting rod 23 shrinks inward, so that the height of the lifting template 28 decreases, the height of the horizontal cylinder 24 decreases until the cylinder body 241 abuts against the stopper 25 to stop decreasing, and at this time, the height of the lifting template 28 is the lower limit height in the lifting motion, and rib plates are arranged on the lifting template 28 and the bottom plate 21 for increasing the structural strength of the plate.

Working principle: the piston shaft of the horizontal oil cylinder 24 is fixed on the double-cylinder combination plate 27 and can move up and down along with the guide post, then oil is injected into the oil injection port of the cylinder body 241, the cylinder body 241 moves towards the two outer sides under the action of hydraulic pressure, and the cylinder body 241 and the lifting template 28 move upwards together under the drive of the mechanism of the connecting rod 23. The improvement is that: the traditional mould lifting speed is determined according to the input flow, and under the condition of unchanged flow, the ejection speed of the ejector rod 29 can be well improved after the double-cylinder and connecting rod 23 mechanism is matched for use, and the ejection speed can be up to 2 times of the speed.

In the device, the assembly and matching relation of all the parts, namely the universal ball 12, the spring 13, the oil cylinder, the matched oil way system and the like are the prior art or materials, and the skilled person can directly purchase or order from the market according to the required product model and specification.

The electrical components are all electrically connected with an external main controller and 220V commercial power or industrial power, and the main controller can be conventional known equipment with a control function of a computer and the like.

In the foregoing description, only the preferred embodiment of the present utility model is described, but the common general knowledge of the specific structure and characteristics of the present utility model is not described in any detail. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the present embodiments are to be considered in all respects as illustrative and not restrictive, and any equivalents and modifications thereof according to the technical scheme and the inventive concept thereof, which are within the scope of the present disclosure, are intended to be included in the scope of the present disclosure.

Claims

1. The lifting die device for the injection molding machine is characterized by comprising a die supporting mechanism, wherein the die supporting mechanism comprises a plurality of universal balls (12) movably mounted on a lower fixed die plate (1), and springs (13) are sleeved on the lower parts of the universal balls (12);

the mould lifting mechanism (2), mould lifting mechanism (2) include ejector pin (29) that can run through lower fixed template (1), ejector pin (29) are fixed on lifting template (28), it is equipped with a plurality of guide arms (26) and all is located the below of lower fixed plate to run through on lifting template (28), guide arm (26) are installed on bottom plate (21) and are located the guide arm (26) of middle part and go up movable sleeve and be equipped with double-cylinder joint board (27), inlay the tip of two piston rods (242) on double-cylinder joint board (27), the other end of piston rod (242) is located the cylinder body (241) of horizontal hydro-cylinder (24), the tip of cylinder body (241) articulates there are two connecting rods (23), connecting rod (23) rotationally connect mount pad (22), mount pad (22) are fixed on lifting template (28) or bottom plate (21), outwards promote connecting rod (23) through horizontal hydro-cylinder (24) oiling and make cylinder (241) outwards promote the height of lifting template (28) and horizontal hydro-cylinder (24) rise in step.

2. The lifting die device for the injection molding machine according to claim 1, wherein the lower fixed die plate (1) is provided with a groove, the lower part of the universal ball (12) is embedded in the groove, and the upper part of the universal ball (12) is clamped in the groove through the compression ring (11).

3. The lifting die device for the injection molding machine according to claim 2, wherein a lower die plate is arranged in the middle of the lower fixing plate, a plurality of universal balls (12) which are arranged in a staggered mode are arranged between the lower die plate and the lower fixing plate, and a hole is formed in the middle of the pressing ring (11) and can accommodate the top of the universal balls (12).

4. A lifting die device for an injection molding machine according to claim 1, wherein the double-cylinder combination plate (27) is embedded with the end part of the piston rod (242) through a split hole seat.

5. The mold lifting device for an injection molding machine according to claim 4, wherein the split hole seat and the end of the piston rod (242) are each provided in a stepped ring shape.

6. The mold lifting device for injection molding machine according to claim 5, wherein two ends of the connecting rod (23) are respectively connected with the mounting seat (22) and the cylinder body (241) through a pivot and a pivot hole.

7. The lifting die device for the injection molding machine according to claim 6, wherein the end of the cylinder body (241) is connected with a flange plate (243), a piston shaft penetrates through the flange plate (243) and is connected with a piston, and the outer diameter of the piston is larger than the diameter of the piston rod (242).

8. The lifting die device for the injection molding machine according to claim 7, wherein a stop block (25) is arranged on the bottom plate (21), the stop block (25) is positioned below the horizontal oil cylinder (24), and rib plates are arranged on the lifting die plate (28) and the bottom plate (21).

9. The lifting die device for the injection molding machine according to any one of claims 1 to 8, wherein the lifting die mechanism (2) is installed in the frame (3), a lower fixed die plate (1) is arranged at the top of the frame (3), a guide pillar is arranged on the lower fixed die plate (1), an upper movable die plate (4) is slidably installed on the guide pillar, the upper movable die plate (4) is connected with an upper fixed plate (5) through a lifting mechanism and a power-off brake mechanism, and the upper fixed plate (5) is installed at the end part of the guide pillar.

10. The lifting die device for the injection molding machine according to claim 9, wherein the lifting mechanism drives the connecting shaft to drive the upper movable die plate (4) to move by a lifting oil cylinder, the lifting oil cylinder is arranged on the upper fixed plate (5), the power-off braking mechanism consists of a gear, a rack, a power-off brake, a transmission shaft and a connecting plate, the gear is arranged on the connecting plate through the transmission shaft, the connecting plate is arranged on the upper fixed plate (5), the power-off brake is arranged at one end of the transmission shaft, the rack is meshed with the gear, and the lower end of the rack is connected with the upper movable die plate (4).