CN116787715A

CN116787715A - Injection molding machine

Info

Publication number: CN116787715A
Application number: CN202310606814.9A
Authority: CN
Inventors: 曲经滨; 傅小卫; 徐文星; 余伟杰; 周朝森; 杨俊�; 董文泉
Original assignee: Zhejiang Changtong Technology Co ltd
Current assignee: Zhejiang Changtong Technology Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-09-22

Abstract

The application discloses an injection molding machine, which belongs to the field of injection molding of storage battery shells, and comprises a feeding box, an extruding device connected with the feeding box, and an opening and closing die driving device for controlling opening and closing of a die, wherein the die comprises a fixed die and a movable die, the opening and closing die driving device comprises a movable seat connected with the movable die and a driving structure for pushing the movable die, the bottom of the movable seat is arranged on an opening and closing die sliding rail, and the driving structure comprises two driving screw rods, so that the moving process of the movable die is more stable and is not easy to shake, the stability of opening and closing the die is improved, and the problems that in the prior art, the stability of the opening and closing processes is poor, the production efficiency of a production line is reduced, and more defective products are caused are solved.

Description

Injection molding machine

Technical Field

The application relates to the field of injection molding of storage battery shells, in particular to an injection molding machine.

Background

With the development of technology, various conventional manufacturing industries are increasing the automation degree of equipment as much as possible to increase the production efficiency. In the past battery case production line, after injection molding, the battery is manually conveyed to a subsequent station for other process steps, such as surface detection, plastic film packaging and the like, and the subsequent station is also manually completed, so that the production efficiency is low. In order to improve production efficiency, the prior art integrates all stations into a production line by using an automated object flow line, and replaces all stations which are originally and manually finished by using automated equipment. The correlation between the stations is increased while the production efficiency is improved, especially for upstream stations, such as injection molding stations in the production of battery cases, the downstream stations are shut down once errors occur, thereby affecting the efficiency of the overall production line.

Before and after the injection molding process of the injection molding machine, the mold opening and closing are needed to be carried out to take out the molded product, however, the existing injection molding machine has poor stability of mold opening and closing and is easy to cause the condition of dead stop, and once the injection molding machine stops, each station at the downstream can be stopped, so that the efficiency of the whole production line is affected. Moreover, once deviation occurs in the mold closing process, the shape of a runner of raw materials entering a molding cavity is changed, and the quality of a molded product is further affected.

For example, the publication CN112223699a of the "an injection molding machine and a control method for an injection molding machine" disclosed in the chinese patent literature includes a workbench, an injection molding mechanism and a mold mechanism are installed on the outer wall of the top of the workbench, a control module is disposed in the workbench, the mold mechanism includes an injection movable mold and an injection fixed mold, and the inner wall of one side of the injection fixed mold is connected to the output end of the injection molding mechanism; the control method of the injection molding machine comprises the following steps: the injection molding mechanism works to extrude materials in the mold core; the timer counts time synchronously in the extrusion process, and the electric control temperature liquid box keeps warm through the first temperature control pipeline and the second temperature control pipeline. The disadvantage of this patent lies in that it opens the mould, the compound die through hydro-cylinder drive, and stability is relatively poor, especially the compound die process, appears the dead condition of card easily, influences the efficiency of whole production line, still probably leads to the raw materials to get into the runner shape of shaping die cavity and changes, and then influences the quality of product after the shaping.

Disclosure of Invention

The application provides an injection molding machine, which aims to solve the problems that in the prior art, the stability of the mold opening and closing process is poor, so that the production efficiency of a production line is reduced, and more defective products appear.

In order to achieve the above purpose, the present application adopts the following technical scheme:

the application discloses an injection molding machine, which comprises a feeding box, an extruding device connected with the feeding box and an opening and closing die driving device for controlling opening and closing of a die, wherein the die comprises a fixed die and a movable die, the opening and closing die driving device comprises a movable seat connected with the movable die and a driving structure for pushing the movable die, the bottom of the movable seat is arranged on an opening and closing die sliding rail, the driving structure comprises two driving screw rods, and driving sliding blocks respectively arranged on two sides of the movable die in an adaptive manner.

In this scheme, replace the hydro-cylinder among the prior art through the drive lead screw for the removal process of movable mould is more stable, is difficult for taking place the shake, thereby improves the stability of die sinking and compound die. Because the driving screw rods are two, and the two sides of the movable die are respectively driven, the movable die can be prevented from being offset in the horizontal rotation direction. And because of the existence of the movable seat and the movable guide rail, the movable path of the movable die can be further limited by driving the screw rods to different heights, so that the movable die is prevented from being deviated in the vertical rotation direction. Under the limit of two different directions, the moving direction of the movable die can be ensured not to deviate, and the condition that the blocking of the movable die affects the production efficiency is avoided.

Preferably, the mold opening and closing driving device further comprises a guide structure, wherein the guide structure further comprises a guide rod, the guide rod comprises an upper guide rod and a lower guide rod, the upper guide rod is respectively arranged above the driving screw rod, the lower guide rod is arranged below the driving screw rod, and the guide rod is connected with the fixed mold through a fixed mold bearing seat and is connected with the movable mold through a movable mold bearing seat; the upper guide rod and the lower guide rod can avoid the deflection of the fixed mould and the movable mould in the relative vertical rotation direction, and the existence of two upper guide rods or two lower guide rods corresponding to the two guide rods can avoid the deflection of the fixed mould and the movable mould in the relative horizontal rotation direction; the structure ensures the reliability of the relative positions of the fixed die and the movable die, thereby avoiding the condition that the shape of a runner of raw materials entering a molding cavity changes and further influencing the quality of molded products.

Preferably, the driving structure further comprises a driving motor and a driving wheel arranged on the driving motor, a driving wheel is further arranged on the driving shaft, and the driving wheel is connected with the driving wheel through a synchronous belt.

Preferably, the driving structure further comprises a tensioner, the tensioner comprising a tensioner wheel for abutting the timing belt; the loosening of the synchronous belt can be avoided through the tensioning wheel.

Preferably, the fixed die and the movable die are respectively provided with a positioning pin and a positioning pin hole matched with the positioning pin, and the relative positions of the fixed die and the movable die after die assembly can be improved through the matching of the positioning pin and the positioning pin hole.

Preferably, the extruding device comprises an extruding pipe fixedly connected with the feeding box, an extruding shaft with a spiral groove at the outer side is arranged in the extruding pipe, an extruding channel is formed between the extruding shaft and the extruding pipe, an extruding head is arranged at one side of the extruding pipe facing the fixed mould, and an extruding driving device for driving the extruding shaft to rotate is arranged at one side of the extruding pipe facing away from the fixed mould; after the extrusion shaft rotates, the spiral groove can extrude the raw materials in the extrusion pipe towards the direction of the fixed mould, and the raw materials are sent into the fixed mould through the extrusion head.

Preferably, the outer side of the extruding pipe is sleeved with a plurality of heating rings, the outer side of the heating rings is sleeved with a heat insulation sleeve, and the lower side of the heat insulation sleeve is provided with a wiring opening; the heating ring is used for ensuring the temperature in the extruding pipe and enabling the raw materials to be in a molten state in the extruding pipe.

Preferably, a plurality of molding cavities are arranged in the movable mold, a diversion cavity is arranged in the fixed mold, the molding cavities are connected with the diversion cavity through diversion channels, and a blanking port is formed between the diversion channels and the molding cavities. In this scheme, after the shaping is accomplished, only need take off reposition of redundant personnel chamber waste material, can make the mouth of a river of a plurality of battery case excision simultaneously, need not to cut the mouth of a river to every battery case respectively to improve the efficiency of production greatly. Because the split cavity is positioned in the fixed mould, after the forming is finished, the movable mould is separated from the fixed mould, and the waste of the split cavity formed in the split cavity is also carried out along with the movable mould and positioned outside the movable mould, so that the waste of the split cavity is convenient to take off.

Preferably, the second split-flow cavity forming structure comprises a water-cutting opening rotary table, a split-flow channel forming groove for forming a split-flow channel is formed in the water-cutting opening rotary table, and the injection molding machine structure further comprises a water-cutting opening driving structure for driving the water-cutting opening rotary table to rotate. In this scheme, after the shaping is accomplished, a part of reposition of redundant personnel chamber waste material is located reposition of redundant personnel passageway shaping recess, and when the carousel rotated at the mouth of a river, the lateral wall of reposition of redundant personnel passageway shaping recess produced a tangential force to the reposition of redundant personnel chamber waste material of this part to make reposition of redundant personnel chamber waste material cut off simultaneously in a plurality of blank mouth department, can not lead to cutting mouth of a river carousel idle running.

Therefore, the application has the following beneficial effects: (1) The moving direction of the moving die can be prevented from being deviated, and the condition that the clamping of the moving die affects the production efficiency is avoided; (2) The reliability of the relative positions of the fixed die and the movable die can be ensured, so that the condition that the shape of a runner of raw materials entering a forming cavity is changed, and the quality of a formed product is further influenced is avoided; (3) A plurality of storage battery shells can be formed simultaneously in one injection molding process, so that the production efficiency is improved; (4) The water gap can be cut to a plurality of storage battery shells fast, and the production efficiency is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic view of a structure of the mold opening and closing driving device of the present application.

Fig. 3 is a schematic left-hand view of the driving structure of the present application.

Fig. 4 is a schematic right-hand view of the driving structure of the present application.

Fig. 5 is a schematic view of a structure of the extruding device of the present application.

Fig. 6 is a schematic view of a structure of an injection mold according to the present application.

Fig. 7 is a schematic side view of the moving die of the present application.

FIG. 8 is a schematic side view of a stent of the present application.

Fig. 9 is an enlarged view of a portion of the first and second nozzle triggering arrangements of the present application in fig. 1.

Fig. 10 is an enlarged view of a portion of the shunt lumen of the present application in fig. 6.

In the figure: 1. the feeding box 2, the extruding device 3, the die-opening and closing driving device 4, the fixed die 5, the movable die 6, the movable seat 7, the die-opening and closing sliding rail 8, the driving screw rod 9, the driving sliding block 10, the upper guide rod 11, the lower guide rod 12, the fixed die bearing seat 13, the movable die bearing seat 14, the driving motor 15, the driving wheel 16, the driving wheel 17, the synchronous belt 18, the extruding pipe 19, the extruding shaft 20, the extruding head 21, the extruding driving device 22, the heating ring 23, the heat insulation sleeve 24, the wire opening 25, the splitting cavity 26, the forming cavity 27, the splitting channel 28, the cutting opening 29, the water cutting opening turntable 30, the forming groove 31, the forming convex block 32, the water cutting opening rotating shaft 33, the rotating shaft through hole 34, the extruding convex block 35, the elastic ring 36, the worm wheel 37, the worm 38, the first driving wheel 39, the second driving wheel 40, the positioning pin 41, the positioning pin hole 42, the recovery box 43 and the tensioning wheel.

Detailed Description

The application is further described below with reference to the drawings and detailed description.

In the embodiment shown in fig. 1 to 10, an injection molding machine comprises a feeding box 1, an extruding device 2 connected with the feeding box, and a mold opening and closing driving device 3 for controlling opening and closing of a mold, wherein the mold comprises a fixed mold 4 and a movable mold 5.

The mold opening and closing driving device comprises a moving seat 6 connected with the moving mold and a driving structure for pushing the moving mold, wherein the bottom of the moving seat is arranged on an opening and closing mold sliding rail 7, the driving structure comprises two driving screw rods 8, and driving sliding blocks 9 respectively arranged on two sides of the moving mold in an adaptive manner. The die opening and closing driving device further comprises a guide structure, the guide structure further comprises guide rods, each guide rod comprises an upper guide rod 10 arranged above the driving screw rod and a lower guide rod 11 arranged below the driving screw rod, and the guide rods are connected with the fixed die through fixed die bearing seats 12 and connected with the movable die through movable die bearing seats 13.

The driving structure further comprises two driving motors 14, driving wheels 15 are arranged on the two driving motors, driving wheels 16 are further arranged on the driving shafts, the driving wheels are connected with the driving wheels through synchronous belts 17, and the single driving machine is a servo motor. The drive structure further comprises a tensioner comprising a tensioner wheel 43 for abutting the timing belt.

The extruding device comprises an extruding pipe 18 fixedly connected with the feeding box, an extruding shaft 19 with a spiral groove at the outer side is arranged in the extruding pipe, an extruding channel is formed between the extruding shaft and the extruding pipe, an extruding head 20 is arranged on one side of the extruding pipe facing to the fixed mould, and an extruding driving device 21 for driving the extruding shaft to rotate is arranged on one side of the extruding pipe facing away from the fixed mould. The outer side of the extruding pipe is sleeved with a plurality of heating rings 22, the outer side of each heating ring is sleeved with a heat insulation sleeve 23, and the lower side of each heat insulation sleeve is provided with a wiring opening 24.

The mould is equipped with reposition of redundant personnel chamber 25 and a plurality of shaping chamber 26 in the compound die state, and a plurality of shaping chamber is arranged as central circumference with the reposition of redundant personnel chamber, and in this embodiment, six shaping chambers use the reposition of redundant personnel chamber to be central circumference equipartition, reposition of redundant personnel chamber and injection moulding passageway intercommunication, the shaping chamber is connected with the reposition of redundant personnel chamber through reposition of redundant personnel passageway 27, forms blank mouth 28 between reposition of redundant personnel passageway and the shaping chamber. The fixed mould is internally provided with a first flow distribution cavity forming structure, the movable mould comprises a product forming structure and a second flow distribution cavity forming structure, and a gap part between the first flow distribution cavity forming structure and the second flow distribution cavity forming structure is a flow distribution cavity.

The second split-flow cavity forming structure comprises a water-cutting opening rotary table 29, split-flow channel forming grooves 30 for forming split-flow channels are uniformly distributed on the water-cutting opening rotary table in the circumferential direction, and the first split-flow cavity forming structure comprises split-flow channel forming convex blocks 31 which are locally positioned in the split-flow channel forming grooves.

A water cutting rotating shaft 32 is also connected to the water cutting rotating disc. The product shaping structure is internally provided with a rotating shaft through hole 33, and the aperture of the rotating shaft through hole is larger than the outer diameter of the rotating shaft of the water cutting port and smaller than the outer diameter of the rotating disc of the water cutting port. An elastic structure is arranged between the water cutting opening rotating disc and the water cutting opening rotating shaft, and an extrusion lug 34 for propping against the water cutting opening rotating disc is arranged in the fixed mould; in the mold closing state, the elastic structure is pressed, the water cutting opening rotary table is abutted with the product forming structure, in the mold opening state, the elastic structure is relaxed, and the water cutting opening rotary table is separated from the product forming structure. In this embodiment, the elastic structure is an elastic ring 35, and two sides of the elastic ring are fixed with the water cutting turntable and the water cutting rotating shaft respectively. In other equivalent embodiments, the resilient structure may also be a combination of springs and shaft holes, etc.

The injection molding machine structure further comprises a water cutting port driving structure for driving the water cutting port rotating disc to rotate. The water cutting opening driving structure comprises a first water cutting opening triggering structure fixedly installed on the frame and a second water cutting opening triggering structure installed on the movable seat, and when the first water cutting opening triggering structure triggers the second water cutting opening triggering structure in the moving process of the movable seat, the water cutting opening rotating shaft drives the water cutting opening rotating disc to rotate. The first water cutting opening triggering structure comprises a worm wheel 36, the second water cutting opening triggering structure comprises a worm 37 matched with the worm wheel, a first driving wheel 38 is installed at one end of the worm, and a second driving wheel 39 which rotates synchronously with the first driving wheel is installed at one end of a water cutting opening rotating shaft.

The movable die is also provided with a locating pin 40, and the fixed die is provided with a locating pin hole 41 matched with the locating pin.

A recovery tank 42 for receiving the waste of the diversion cavity is also mounted in the frame.

The die assembly injection molding process of the device comprises the following steps: when the driving motor rotates positively, the two driving wheels drive the driving wheels to rotate through the synchronous belt, so that the two driving screw rods are driven to synchronously rotate, the two driving sliding blocks move at the same speed, the movable die is driven to move towards the fixed die, die assembly is carried out, and in the die assembly process, the positioning pins are adaptively inserted into the positioning pin holes; after the die is closed, a split-flow cavity is formed between the first split-flow cavity forming structure and the second split-flow cavity forming structure, and a forming cavity is formed between the fixed die and the product forming structure; then, the extrusion driving device drives the spiral structure in the extrusion channel to rotate, so that raw materials are extruded into the distribution cavity through the injection molding head, the distribution cavity is full, the raw materials enter the molding cavities again, and molding is started after injection molding is completed.

The demolding process of the device comprises the following steps: the driving motor rotates reversely, so that the movable die moves back to the fixed die and opens the die. In the die sinking process, the waste materials in the split cavity are separated from the fixed die, and the first material breaking is carried out; in the process of separating the extrusion lug from the water cutting gap turntable, friction force is generated on the waste of the diversion cavity, so that a gap is generated between the waste of the diversion cavity and the water cutting gap turntable; meanwhile, under the action of the elastic structure, a gap is also generated between the water cutting opening rotating disc and the product forming structure, and the gap at the moment is a tiny gap brought by the plasticity of waste materials of the flow distribution cavity, so that the elastic structure is not completely restored. When the worm moves to the worm wheel, the worm wheel and the worm wheel are meshed, and the worm wheel is fixed, and the moving seat continuously moves, so that the worm rotates and drives the first driving wheel, the second driving wheel and the water cutting opening rotating shaft to rotate. After the rotating shaft of the water cutting port rotates, under the action of tangential force on the side wall of the forming groove of the flow dividing channel, the positions of all the material cutting ports are broken to generate secondary material cutting, so that waste materials of the flow dividing cavity are separated from a storage battery shell in the forming cavity; at this time, under the effect of elastic construction, cut mouth of a river carousel outside and pop out for cut mouth of a river waste material drops down in the collection box. After the die opening is completed, the material taking manipulator stretches into the space between the fixed die and the movable die, and the storage battery shell in the forming cavity is sucked out through the material taking sucker.

Claims

1. The utility model provides an injection molding machine, its characterized in that includes the feeding case, the crowded material device of being connected with the feeding case to and be used for controlling the mould drive arrangement that opens and shuts, the mould includes fixed mould and movable mould, open and shut mould drive arrangement include with the movable seat that the movable mould is connected, and be used for promoting the drive structure of movable mould, the bottom of movable seat is installed on opening and closing the mould slide rail, drive structure includes two drive lead screws, the both sides of movable mould install respectively in the drive slider of drive lead screw adaptation installation.

2. An injection molding machine as claimed in claim 1, wherein said mold opening and closing driving means further comprises a guide structure further comprising guide bars including upper guide bars respectively installed above the driving screw and lower guide bars installed below the driving screw, said guide bars being connected to the fixed mold through a fixed mold bearing housing and to the movable mold through a movable mold bearing housing.

3. The injection molding machine of claim 1, wherein the drive structure further comprises a drive motor, and a drive wheel mounted on the drive motor, and a drive wheel is further mounted on the drive shaft, and the drive wheel are connected by a timing belt.

4. An injection molding machine as claimed in claim 3, wherein said drive structure further comprises a tensioner comprising a tensioner for abutting said timing belt.

5. An injection molding machine as claimed in any one of claims 1-4, wherein said fixed mold and said movable mold are respectively provided with a positioning pin and a positioning pin hole adapted to the positioning pin.

6. The injection molding machine of claim 1, wherein the extruding device comprises an extruding pipe fixedly connected with the feeding box, an extruding shaft with a spiral groove at the outer side is arranged in the extruding pipe, an extruding channel is formed between the extruding shaft and the extruding pipe, an extruding head is arranged on one side of the extruding pipe facing the fixed mold, and an extruding driving device for driving the extruding shaft to rotate is arranged on one side of the extruding pipe facing away from the fixed mold.

7. The injection molding machine of claim 6, wherein a plurality of heating rings are sleeved outside the extrusion pipe, a heat insulation sleeve is sleeved outside the heating rings, and a wiring opening is arranged on the lower side of the heat insulation sleeve.

8. The injection molding machine according to claim 1, wherein a plurality of molding cavities are arranged in the movable mold, a split cavity is arranged in the fixed mold, the molding cavities are connected with the split cavity through split channels, and a blanking port is formed between the split channels and the molding cavities.

9. The injection molding machine of claim 8, wherein the second split cavity forming structure comprises a split runner turntable provided with split runner forming grooves for forming split runners, and the injection molding machine further comprises a split runner driving structure for driving the split runner turntable to rotate.