CN117124555A - Mould mechanism and injection molding machine that opens and shuts - Google Patents
Mould mechanism and injection molding machine that opens and shuts Download PDFInfo
- Publication number
- CN117124555A CN117124555A CN202211012459.4A CN202211012459A CN117124555A CN 117124555 A CN117124555 A CN 117124555A CN 202211012459 A CN202211012459 A CN 202211012459A CN 117124555 A CN117124555 A CN 117124555A
- Authority
- CN
- China
- Prior art keywords
- oil
- channel
- opening
- valve
- oil supplementing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 18
- 230000001502 supplementing effect Effects 0.000 claims description 63
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000003321 amplification Effects 0.000 abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000003749 cleanliness Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mold opening and closing mechanism and an injection molding machine, comprising a mold and an opening and closing mechanism, wherein the opening and closing mechanism comprises: the hydraulic cylinder is connected with the die and used for driving the die to open and close; the screw rod is in threaded connection with a piston rod of the hydraulic cylinder; and the driving motor is used for driving the screw rod. When the device works, on one hand, the screw rod is driven by the driving motor, and the screw rod drives the piston rod to provide a part of power; on the other hand, the hydraulic cylinder is provided with a part of driving force, so that the driving force of a single hydraulic cylinder can be improved, the structure of the driving motor and the screw rod does not pollute the working environment, and compared with a power amplification structure and a double-oil pump type structure, the structure is simpler.
Description
Technical Field
The invention belongs to the technical field of molds, and particularly relates to a mold opening and closing mechanism for opening and closing a mold by oil-electricity hybrid driving.
Background
The mold is called as a "manufacturing master", and is an important tool in the manufacturing industry, and the mold often needs to be moved during the use process of the mold, such as opening and closing the mold in an injection molding machine, and the like, and is generally completed by adopting a hydraulic system. The hydraulic system has the advantages of large output force, but the defects are obvious, such as the problem of insufficient hydraulic pressure, insufficient production environment cleanliness caused by oil leakage and the like. In order to solve the problem of insufficient hydraulic pressure, the hydraulic system relies on timely oil supplementing of an oil pump, in the prior art, for example, a "hydraulic system and a die" disclosed in the chinese patent literature, its publication number is CN106194867a, and a first oil pump and a second oil pump are simultaneously provided, and the first oil pump and the second oil pump can work simultaneously, so that sufficient pressure oil can be provided for the first oil cylinder group and the second oil cylinder group, so that the reliability of the working of the hydraulic system is better. But has the disadvantage of increasing the complexity of the structure and does not solve the problem of insufficient cleanliness of the production environment.
In another prior art, as shown in fig. 1, the power amplifying structure is provided to amplify hydraulic power to reduce the oil supplementing requirement, and the power amplifying structure 4 generally adopts devices such as a connecting rod, and needs lubrication, so that the mold is easily stained with oil stains, and cannot adapt to production conditions of products with high requirements on sanitation, such as production of medical equipment.
Disclosure of Invention
In order to solve the problems of insufficient cleanliness and complex structure of a die opening and closing mechanism in the prior art, the invention provides a die opening and closing mechanism driven by a hydraulic cylinder and a motor in a mixing way, namely an injection molding machine, which does not pollute the working environment and can omit a complex structure.
The invention is realized by the following technical scheme: a mold opening and closing mechanism comprising a mold and an opening and closing mechanism, the opening and closing mechanism comprising:
the hydraulic cylinder is connected with the die and used for driving the die to open and close;
the screw rod is in threaded connection with a piston rod of the hydraulic cylinder;
and the driving motor is used for driving the screw rod.
When the device works, on one hand, the screw rod is driven by the driving motor, and the screw rod drives the piston rod to provide a part of power; on the other hand, the hydraulic cylinder is provided with a part of driving force, so that the driving force of a single hydraulic cylinder can be improved, the structure of the driving motor and the screw rod does not pollute the working environment, and compared with a power amplification structure and a double-oil pump type structure, the structure is simpler.
Preferably, the piston in the hydraulic cylinder is provided with an oil supplementing channel, the oil supplementing channel is communicated with two sides of the piston, and an oil supplementing valve for opening and closing the oil supplementing channel is arranged in the oil supplementing channel. When the hydraulic cylinder is used, oil liquid at one side of the smaller space in the hydraulic cylinder can be supplemented to one side of the larger space in the hydraulic cylinder through the oil supplementing channel, so that oil supplementing is not required to pass through an oil pump, and the oil supplementing efficiency is greatly improved. In addition, the oil pump can be omitted even in some scenes with low driving force requirements, external oil supplementing is not needed, the structure is simpler, and the equipment cleanliness is further improved.
Preferably, an opening and closing rod is arranged on one side, back to the piston rod, of the hydraulic cylinder, the die comprises an upper die close to the hydraulic cylinder and a lower die far away from the hydraulic cylinder, the opening and closing rod penetrates through the upper die and then is connected with the lower die, and the opening and closing rod is in sliding connection with the upper die. Because the piston rod needs to be connected with the screw rod, the other side of the piston also needs to be provided with an opening and closing rod for connecting an upper die and a lower die of the die, and therefore the hydraulic cylinder is in a double-side rod form.
Preferably, the hydraulic cylinder is divided into two cavities by the piston, and the two cavities are provided with oil inlet and outlet ports communicated with the oil pump. In order to increase the power provided by the hydraulic cylinder, the two cavities are connected with the oil pump, so that the oil supplementing efficiency is further improved, and the driving force of the opening and closing mechanism is larger.
Preferably, the oil supplementing channel comprises an oil outlet channel communicated with the cavity on one side of the piston rod, an oil inlet channel communicated with the cavity on one side of the opening and closing rod, and a valve channel communicated with the oil outlet channel and the oil inlet channel and containing an oil supplementing valve, wherein a sliding cavity for containing the oil supplementing valve to open the valve channel is arranged on one side of the valve channel towards the oil inlet channel. When one side needs to be supplemented with oil, the oil supplementing valve is slid to communicate the oil inlet channel and the oil outlet channel to complete oil supplementing.
Preferably, the oil supplementing valve is dumbbell-shaped, two ends of the oil supplementing valve can seal the oil supplementing valve channel, and the length of the oil supplementing valve is longer than the distance between the oil inlet channel and the oil outlet channel and the oil supplementing valve channel. The dumbbell-shaped oil supplementing valve is arranged, so that the periphery of the oil supplementing valve and the inner wall of the oil supplementing valve channel form an oil passing channel in the oil supplementing valve channel, the flow of oil in the oil supplementing valve channel is more uniform, and the resistance is smaller.
Preferably, one end of the oil supplementing valve is provided with a protection section with a cross section area larger than that of two ends of the oil supplementing valve, and the oil supplementing valve channel is correspondingly provided with a protection channel for sliding of the protection section, so that the oil supplementing valve is prevented from being bumped against the piston to avoid damage during sliding.
Preferably, the cavity is arranged in the opening and closing rod, a connecting rod for operating the oil supplementing valve is arranged on one side of the oil supplementing valve, which faces to the opening and closing rod, and the connecting rod penetrates out of the cavity of the opening and closing rod, so that the opening and closing of the oil supplementing valve can be controlled manually or automatically on one side of the opening and closing rod.
The injection molding machine comprises the mold opening and closing mechanism and injection molding machine equipment, and the injection molding machine is simplified in structure, so that the position arrangement of the injection molding equipment is more convenient.
Compared with the prior art, the invention has the advantages that:
the motor provides driving force jointly through the screw rod and the hydraulic pump, and when lifting the total driving force of the opening and closing die, the driving motor and the structure of the screw rod do not pollute the working environment, and compared with the power amplification structure and the double-oil pump form structure, the structure is simpler.
Drawings
FIG. 1 is a schematic perspective view of a mold opening and closing mechanism with a power amplification structure and an injection molding machine in the prior art;
FIG. 2 is a schematic side view of an external appearance of an injection molding machine;
FIG. 3 is a schematic cross-sectional view of an embodiment taken at A-A of FIG. 2;
FIG. 4 is an enlarged schematic view of FIG. 3B;
FIG. 5 is an enlarged schematic view of the second embodiment at A-A of FIG. 2;
fig. 6 is an external perspective view of an injection molding machine.
In the figure: the hydraulic cylinder 1, the piston rod 11, the oil supplementing channel 12, the oil outlet channel 121, the oil inlet channel 122, the valve channel 123, the sliding cavity 124, the oil supplementing valve 13, the protection section 131, the oil inlet and outlet 14, the opening and closing rod 15, the connecting rod 16, the screw rod 2, the driving motor 3, the power amplification structure 4 and the injection molding equipment 5.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention easy to understand, the following further describes how the present invention is implemented with reference to the accompanying drawings and the detailed description.
In a first embodiment, as shown in fig. 2-4, a mold opening and closing mechanism includes a mold and an opening and closing mechanism, the mold includes an upper mold close to a hydraulic cylinder 1 and a lower mold far away from the hydraulic cylinder 1, the opening and closing mechanism includes:
the hydraulic cylinder 1 is connected with the die and used for driving the die to open and close;
the screw rod 2 is in threaded connection with a piston rod 11 of the hydraulic cylinder 1;
and a driving motor 3 for driving the screw rod 2.
The hydraulic cylinder 1 includes:
the oil supplementing channel 12 is communicated with two sides of a piston of the hydraulic cylinder 1 and is provided with an oil supplementing valve 13 for opening and closing the oil supplementing channel 12;
the oil inlet and outlet 14 is positioned at two ends of the hydraulic cylinder 1 and is used for being communicated with an oil pump, so that the power provided by the hydraulic cylinder 1 is increased, the oil supplementing efficiency is further improved, and the driving force of the opening and closing mechanism is larger;
the opening and closing rod 15 is arranged on one side of the hydraulic cylinder 1, which is opposite to the piston rod 11, the opening and closing rod 15 passes through the upper die and then is connected with the lower die, the opening and closing rod 15 is in sliding connection with the upper die, a cavity is arranged in the opening and closing rod 15, a connecting rod 16 for operating the oil compensating valve 13 is arranged on one side of the oil compensating valve 13, which faces the opening and closing rod 15, the connecting rod 16 passes out of the cavity of the opening and closing rod 15, and the opening and closing of the oil compensating valve 13 are conveniently controlled manually or automatically on one side of the opening and closing rod 15.
The theory of operation of this embodiment is, through driving motor drive lead screw 2, lead screw 2 drive piston rod 11 provides a part power, pneumatic cylinder 1 itself also has a part driving force to, when the fluid of pneumatic cylinder 1 interior space grow one side of space grow is supplemented to the pneumatic cylinder 1 interior space one side by the oil make-up passageway 12, make the oil make-up need not pass through the oil pump, improve the oil make-up efficiency greatly, when consequently can improve the driving force of single pneumatic cylinder 1, driving motor does not pollute operational environment with the structure of lead screw 2, and compare power amplification structure and double oil pump's formal structure simpler.
In addition, the oil pump can be omitted even in some scenes with low driving force requirements, external oil supplementing is not needed, the structure is simpler, and the equipment cleanliness is further improved.
In a second embodiment, as shown in fig. 5, the oil compensating passage 12 includes:
an oil outlet passage 121 communicated with the cavity on one side of the piston rod 11;
an oil inlet passage 122 communicating with the cavity on one side of the opening/closing lever 15;
the valve passage 123 communicates the oil outlet passage 121 and the oil inlet passage 122 and accommodates the oil replenishment valve 13.
Further, the valve passage 123 is provided with a sliding chamber 124 toward the oil feed passage 122 side for accommodating the oil replenishment valve 13 to open the valve passage 123. The oil compensating valve 13 is dumbbell-shaped, two ends can seal the channel of the oil compensating valve 13, and the length of the oil compensating valve 13 is longer than the distance between the oil inlet channel 122 and the oil outlet channel 121, and the distance is greater than the distance between the oil inlet channel 122 and the oil outlet channel 121. The arrangement of the dumbbell-shaped oil supplementing valve 13 enables the periphery of the oil supplementing valve 13 and the inner wall of the oil supplementing valve 13 to form an oil passing channel in the oil supplementing valve 13 channel, so that the oil flows more uniformly in the valve channel 123, and the resistance is smaller.
In addition, one end of the oil compensating valve 13 is provided with a protection section 131 with a cross-sectional area larger than that of the two ends of the oil compensating valve 13, and the valve channel 123 is correspondingly provided with a protection channel for sliding the protection section 131, so that the oil compensating valve 13 is prevented from being bumped against a piston to avoid damage during sliding.
The other structure is the same as that of the first embodiment.
In the third embodiment, as shown in fig. 2, 3 and 6, the injection molding machine includes the mold opening and closing mechanism and the injection molding device 5 of the second embodiment, as compared with fig. 1, the overall structure of the injection molding machine is simpler due to the simplification of the mold opening and closing device.
Claims (9)
1. The utility model provides a mould mechanism that opens and shuts, includes mould and mechanism that opens and shuts, its characterized in that, mechanism that opens and shuts includes:
the hydraulic cylinder is connected with the die and used for driving the die to open and close;
the screw rod is in threaded connection with a piston rod of the hydraulic cylinder;
and the driving motor is used for driving the screw rod.
2. The mold opening and closing mechanism according to claim 1, wherein: the piston in the hydraulic cylinder is provided with an oil supplementing channel which is communicated with two sides of the piston, and an oil supplementing valve for opening and closing the oil supplementing channel is arranged in the oil supplementing channel.
3. The mold opening and closing mechanism according to claim 2, wherein: the die comprises an upper die close to the hydraulic cylinder and a lower die far away from the hydraulic cylinder, wherein the opening and closing rod is arranged on one side, back to the piston rod, of the hydraulic cylinder, and is connected with the lower die after penetrating through the upper die and is in sliding connection with the upper die.
4. A mold opening and closing mechanism according to claim 2 or 3, characterized in that: the hydraulic cylinder is divided into two cavities by the piston, and the two cavities are provided with oil inlet and oil outlet ports communicated with the oil pump.
5. A mold opening and closing mechanism according to claim 2 or 3, characterized in that: the oil supplementing channel comprises an oil outlet channel communicated with the cavity on one side of the piston rod, an oil inlet channel communicated with the cavity on one side of the opening and closing rod and a valve channel communicated with the oil outlet channel and the oil inlet channel and used for accommodating an oil supplementing valve, and a sliding cavity used for accommodating the oil supplementing valve to open the valve channel is arranged on one side of the valve channel facing the oil inlet channel.
6. A mold opening and closing mechanism according to claim 2 or 3, characterized in that: the oil supplementing valve is dumbbell-shaped, two ends of the oil supplementing valve can seal the oil supplementing valve channel, and the length of the oil supplementing valve is larger than the distance between the oil inlet channel and the oil outlet channel, and the distance is between the oil inlet channel and the oil outlet channel and is connected with the oil supplementing valve channel.
7. The mold opening and closing mechanism according to claim 6, wherein: one end of the oil supplementing valve is provided with a protection section with the cross section area larger than that of the two ends of the oil supplementing valve, and the oil supplementing valve channel is correspondingly provided with a protection channel for the protection section to slide.
8. A mold opening and closing mechanism according to claim 3, wherein: the oil supplementing valve is characterized in that a cavity is formed in the opening and closing rod, a connecting rod for operating the oil supplementing valve is arranged on one side, facing the opening and closing rod, of the oil supplementing valve, and the connecting rod penetrates out of the cavity of the opening and closing rod.
9. An injection molding machine comprising the mold opening and closing mechanism according to any one of claims 1 to 8, characterized in that: also comprises an injection molding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211012459.4A CN117124555A (en) | 2022-08-23 | 2022-08-23 | Mould mechanism and injection molding machine that opens and shuts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211012459.4A CN117124555A (en) | 2022-08-23 | 2022-08-23 | Mould mechanism and injection molding machine that opens and shuts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117124555A true CN117124555A (en) | 2023-11-28 |
Family
ID=88861620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211012459.4A Pending CN117124555A (en) | 2022-08-23 | 2022-08-23 | Mould mechanism and injection molding machine that opens and shuts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117124555A (en) |
-
2022
- 2022-08-23 CN CN202211012459.4A patent/CN117124555A/en active Pending
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