CN215039695U - Oil cylinder structure for injection molding machine - Google Patents
Oil cylinder structure for injection molding machine Download PDFInfo
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- CN215039695U CN215039695U CN202121240149.9U CN202121240149U CN215039695U CN 215039695 U CN215039695 U CN 215039695U CN 202121240149 U CN202121240149 U CN 202121240149U CN 215039695 U CN215039695 U CN 215039695U
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Abstract
The application relates to an oil cylinder structure for an injection molding machine, which comprises a cylinder body, a piston rod and a piston; a partition plate is arranged in the cylinder body to divide the cylinder body into a first containing cavity and a second containing cavity, and the volume of the first containing cavity is larger than that of the second containing cavity; the piston rod penetrates through the partition plate, and the two pistons are arranged on the piston rod and are respectively arranged in the first containing cavity and the second containing cavity; the piston divides the first cavity into a first area and a second area, and divides the second cavity into a third area and a fourth area; a first oil hole, a second oil hole, a vent hole and a glue injection oil hole are formed in the cylinder body, the first oil hole is communicated with the first area, the second oil hole is communicated with the third area, the vent hole is communicated with the second area, and the glue injection oil hole is communicated with the fourth area; the first oil hole and the second oil hole are both connected with oil pipes, and flow control valves are arranged on the oil pipes. The sealing device has the advantages of simple and reasonable structure, good operation performance, good sealing effect and high working efficiency.
Description
Technical Field
The application relates to the technical field of injection molding machines, in particular to an oil cylinder structure for an injection molding machine.
Background
An injection molding machine, also known as an injection molding machine or an injection molding machine, is a main molding device for molding thermoplastic plastics or thermosetting plastics into plastic products of various shapes by using a plastic molding mold. The injection molding machine can heat plastic and apply high pressure to the molten plastic to inject the plastic to fill the mold cavity.
The injection table driving oil cylinder of the injection molding machine is used for driving a melt adhesive screw to enter a charging barrel and be extracted from the charging barrel, but the existing injection table driving oil cylinder realizes driving by alternately introducing and discharging oil at two ends; when the glue is injected, all hydraulic oil in the rodless cavity needs to be discharged, the oil quantity is large, the resistance of the oil is also large, so that the resistance which needs to be overcome during the glue injection action is also large, the response speed is slow, and meanwhile, the counter-acting force borne by the piston is also large, so that the impact on the oil cylinder is easily caused, and the service life of the oil cylinder is influenced; when the glue is pumped, the load of the glue melting screw is small, but the glue melting screw is also realized by oil inlet of the rodless cavity, so that the same oil inlet amount as that in the glue injection process needs to be kept, a large electromagnetic valve needs to be selected, and the production cost of the electromagnetic valve is improved.
SUMMERY OF THE UTILITY MODEL
The application provides an oil cylinder structure for injection molding machine has simple structure reasonable, the working property is good, sealed effectual, the effect that work efficiency is high.
The application provides a pair of hydro-cylinder structure for injection molding machine adopts following technical scheme:
an oil cylinder structure for an injection molding machine comprises a cylinder body, a piston rod and a piston, wherein the piston rod penetrates through the cylinder body, one end of the piston rod is used for being connected with an oil motor, and the other end of the piston rod is used for being connected with a charging barrel; a partition plate is arranged in the cylinder body to divide the cylinder body into a first containing cavity and a second containing cavity, and the volume of the first containing cavity is larger than that of the second containing cavity; the piston rod penetrates through the partition plate, and the two pistons are arranged on the piston rod and are respectively arranged in the first containing cavity and the second containing cavity; the piston divides the first cavity into a first area and a second area, and divides the second cavity into a third area and a fourth area; a first oil hole, a second oil hole, a vent hole and a glue injection oil hole are formed in the cylinder block, the first oil hole is communicated with the first area, the second oil hole is communicated with the third area, the vent hole is communicated with the second area, the glue injection oil hole is communicated with the fourth area, the first oil hole is formed in one side facing the oil motor, and the second oil hole is formed in one side facing the partition plate; the first oil hole and the second oil hole are both connected with oil pipes, and flow control valves are arranged on the oil pipes.
Preferably, a sealing ring is arranged between the piston rod and the partition plate.
Preferably, a seal is provided on both of said pistons.
Preferably, the length of the first cavity is equal to that of the second cavity, and the aperture of the first cavity is larger than that of the second cavity.
Preferably, the aperture of the first cavity is equal to the aperture of the second cavity, and the length of the first cavity is longer than that of the second cavity.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the cylinder body is divided into a first containing cavity and a second containing cavity by arranging a partition plate in the cylinder body, oil is fed into the first containing cavity and the second containing cavity respectively through a first oil hole and a second oil hole, one of the control flow control valves is opened singly or simultaneously by adjusting the flow control valve on the oil pipe, the piston rod is adjusted at different speeds and oil pressures under different precision requirements, and the piston is pushed to slide in the cylinder body;
2. the sealing ring is arranged between the piston rod and the partition plate, and the sealing elements are arranged on the piston, so that the sealing performance between the first accommodating cavity and the second accommodating cavity is improved when the piston rod moves.
Drawings
FIG. 1 is a structural sectional view of embodiment 1;
FIG. 2 is a structural sectional view of embodiment 2.
Description of reference numerals: 1. a cylinder body; 2. a piston rod; 3. a piston; 4. a partition plate; 5. a first cavity; 51. a first region; 52. a second region; 6. a second cavity; 61. a third region; 62. a fourth region; 7. a first oil hole; 8. a second oil hole; 9. a seal member; 10. a flow control valve; 11. a seal ring; 12. a vent hole; 13. penetrate the gluey oilhole.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses oil cylinder structure for injection molding machine.
Example 1
Referring to fig. 1, the cylinder structure includes a cylinder body 1, a piston rod 2, and a piston 3; the piston rod 2 penetrates through the cylinder body 1, and one end of the piston rod is used for being connected with the oil motor, and the other end of the piston rod is used for being connected with the charging barrel.
The cylinder body 1 is internally provided with a partition plate 4 which divides the cylinder body 1 into a first containing cavity 5 and a second containing cavity 6, the length of the first containing cavity 5 is equal to that of the second containing cavity 6, and the volume of the first containing cavity 5 is larger than that of the second containing cavity 6; the piston rod 2 penetrates through the partition plate 4, and a sealing ring 11 is arranged between the piston rod 2 and the partition plate 4 so as to improve the sealing performance between the first accommodating cavity 5 and the second accommodating cavity 6 when the piston rod 2 moves.
The two pistons 3 are arranged on the piston rod 2 and are respectively arranged in the first cavity 5 and the second cavity 6; the piston 3 divides the first chamber 5 into a first area 51 and a second area 52, divides the second chamber 6 into a third area 61 and a fourth area 62, and a first oil hole 7, a second oil hole 8, a vent hole 12 and a glue injection oil hole 13 are arranged on the cylinder 1; the first oil hole 7 communicates with the first region 51, the second oil hole 8 communicates with the third region 61, the vent hole 12 communicates with the second region 52, the grease-injecting hole 13 communicates with the fourth region 62, the first oil hole 7 is disposed on the side facing the oil motor, and the second oil hole 8 is disposed on the side facing the partition plate 4.
In order to improve the sealing performance of the piston 3 when the piston is in the movement of the first cavity 5 or the second cavity 6, a sealing element 9 is arranged on each piston 3.
The first oil hole 7 and the second oil hole 8 are both connected with an oil pipe, the flow control valves 10 are arranged on the oil pipes, and one of the flow control valves 10 is controlled to be opened singly or simultaneously, so that the piston rod 2 can be adjusted at different speeds and oil pressures under different precision requirements.
The implementation principle is as follows: through set up baffle 4 in cylinder body 1 and divide into first appearance chamber 5 and second appearance chamber 6 with it, when oil motor drive cylinder body 1 was done, through first oilhole 7 and second oilhole 8 respectively to first appearance chamber 5 and second appearance intracavity oil feed to through the flow control valve 10 on the regulation oil pipe, make one of them single division of control flow control valve 10 or open simultaneously, realize under different precision requirements piston rod 2, to the regulatory action of different speed and oil pressure, the realization promotes piston 3 and slides in cylinder body 1, and has simple structure rationally, the operating performance is good, sealed effectual, the effect that work efficiency is high. When the flow control valve 10 is synchronously opened, multi-section oil pressure acts on the piston rod 2 to achieve the effect of uniform stress; when the charging barrel moves back, the rubber injection oil hole 13 at the fourth area 62 is used for feeding oil, the first oil hole 7 in the first area 51 and the second oil hole 8 in the third area 61 move back, the second area 52 forms negative pressure and air is fed through the vent hole 12, and the return effect of the piston rod 2 is realized.
Example 2
Referring to fig. 2, the difference from embodiment 1 is that the aperture of a first cavity 5 is equal to the aperture of a second cavity 6, and the length of the first cavity 5 is longer than that of the second cavity 6.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. An oil cylinder structure for an injection molding machine comprises a cylinder body (1), a piston rod (2) and a piston (3), wherein the piston rod (2) penetrates through the cylinder body (1), one end of the piston rod is used for being connected with an oil motor, and the other end of the piston rod is used for being connected with a charging barrel; the method is characterized in that: a partition plate (4) is arranged in the cylinder body (1) to divide the cylinder body (1) into a first containing cavity (5) and a second containing cavity (6), and the volume of the first containing cavity (5) is larger than that of the second containing cavity (6); the piston rod (2) penetrates through the partition plate (4), and the two pistons (3) are arranged on the piston rod (2) and are respectively arranged in the first accommodating cavity (5) and the second accommodating cavity (6); the piston (3) divides the first cavity (5) into a first area (51) and a second area (52), and divides the second cavity (6) into a third area (61) and a fourth area (62); a first oil hole (7), a second oil hole (8), a vent hole (12) and a glue injection oil hole (13) are formed in the cylinder block (1), the first oil hole (7) is communicated with the first area (51), the second oil hole (8) is communicated with the third area (61), the vent hole (12) is communicated with the second area (52), and the glue injection oil hole (13) is communicated with the fourth area (62); the first oil hole (7) is formed in one side of the oil motor, the second oil hole (8) is formed in one side of the partition plate (4), the first oil hole (7) and the second oil hole (8) are both connected with oil pipes, and flow control valves (10) are arranged on the oil pipes.
2. The cylinder structure for an injection molding machine according to claim 1, characterized in that: and a sealing ring (11) is arranged between the piston rod (2) and the partition plate (4).
3. The cylinder structure for an injection molding machine according to claim 1, characterized in that: and sealing elements (9) are arranged on the two pistons (3).
4. The cylinder structure for an injection molding machine according to claim 1, characterized in that: the length of the first containing cavity (5) is equal to that of the second containing cavity (6), and the caliber of the first containing cavity (5) is larger than that of the second containing cavity (6).
5. The cylinder structure for an injection molding machine according to claim 1, characterized in that: the caliber of the first containing cavity (5) is equal to that of the second containing cavity (6), and the length of the first containing cavity (5) is longer than that of the second containing cavity (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121240149.9U CN215039695U (en) | 2021-06-03 | 2021-06-03 | Oil cylinder structure for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121240149.9U CN215039695U (en) | 2021-06-03 | 2021-06-03 | Oil cylinder structure for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215039695U true CN215039695U (en) | 2021-12-07 |
Family
ID=79207132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121240149.9U Active CN215039695U (en) | 2021-06-03 | 2021-06-03 | Oil cylinder structure for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215039695U (en) |
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2021
- 2021-06-03 CN CN202121240149.9U patent/CN215039695U/en active Active
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