CN209937569U - Oil cylinder core-pulling retaining mechanism - Google Patents
Oil cylinder core-pulling retaining mechanism Download PDFInfo
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- CN209937569U CN209937569U CN201920370064.9U CN201920370064U CN209937569U CN 209937569 U CN209937569 U CN 209937569U CN 201920370064 U CN201920370064 U CN 201920370064U CN 209937569 U CN209937569 U CN 209937569U
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Abstract
The utility model discloses a hydro-cylinder stopping mechanism of loosing core, including hydro-cylinder, stopping piece and a plurality of core rod that the level set up side by side, the hydro-cylinder is connected with external core and hydro-cylinder connecting block respectively, just the hydro-cylinder is located the top of hydro-cylinder connecting block, stopping piece and external back mould fixed connection, just the stopping piece install in the bottom of hydro-cylinder connecting block, every core rod through the core rod connecting block that corresponds with the hydro-cylinder connecting block is connected, the hydro-cylinder with the plane at a plurality of core rod places sets up perpendicularly, the drive direction of hydro-cylinder is perpendicular with the direction of loosing core. Compared with the prior art, the utility model discloses simple structure, processing is convenient, and dismouting, maintenance are convenient, and it is with low costs to make and use, and the stable performance, and work efficiency is high, and the security is high.
Description
Technical Field
The utility model relates to a hydro-cylinder stopping technical field of loosing core especially relates to a hydro-cylinder stopping mechanism of loosing core.
Background
At present, an inverted buckle structure exists on the main appearance surface of a plurality of products on a vehicle, a sliding block needs to be independently designed for core pulling, so that the appearance of the main visual area is influenced by a sliding block line, the core pulling rod is generally driven by an oil cylinder for ensuring the stability of core pulling, if the stopping of the oil cylinder is unreliable, the core pulling rod is stressed to retreat when the high-pressure injection molding is carried out, so that the appearance surface of the product is required to be repaired or even scrapped due to the fact that flash and fracture are generated.
The existing cylinder core pulling method adopted by the prior art is that the cylinder and the core pulling rod are positioned on the same straight line, the pressure of injection molding filling is directly transmitted to the cylinder, and because the inside of the cylinder is not a rigid structure, especially a product with a complex structure, the cylinder cannot be prevented from retreating during high-pressure filling, even if a backstop valve is added, the flow of oil in an oil pipe cannot be controlled, the backstop is unreliable, the cylinder is transversely installed, the maintenance is inconvenient, and the integral size of a die needs to be increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a hydro-cylinder stopping mechanism of loosing core, aims at solving for the oil leak that leads to under the control limit oil pressure of returning, hydro-cylinder loss and safety problem, increases the mould and the injection molding machine wasting of resources problem that lead to for reducing the potential safety hazard mould size, installs the inconvenient problem of maintenance to and loose core product overlap that the state of the core unstability leads to, disconnected poor problem.
For the above-mentioned purpose of realization, the utility model provides an hydro-cylinder is loosed core and is only moved back mechanism, including hydro-cylinder, only move back piece and level a plurality of core rod that set up side by side, the hydro-cylinder is connected with external core and hydro-cylinder connecting block respectively, just the hydro-cylinder is located the top of hydro-cylinder connecting block, only move back piece and external back mould fixed connection, just the only move back piece install in the bottom of hydro-cylinder connecting block, every core rod through the corresponding core rod connecting block with the hydro-cylinder connecting block is connected, the hydro-cylinder with the plane perpendicular setting at a plurality of core rod places, the drive direction of hydro-cylinder is perpendicular with the direction of loosing core.
The further technical scheme of the utility model is, the hydro-cylinder connecting block with the face that the core rod connecting block contacted is the inclined plane.
The further technical scheme of the utility model is, the hydro-cylinder with external core passes through screw fixed connection.
The utility model has the advantages that: the utility model discloses a hydro-cylinder, stopping piece and level set up side by side a plurality of core rod, the hydro-cylinder is connected with external core and hydro-cylinder connecting block respectively, just the hydro-cylinder is located the top of hydro-cylinder connecting block, stopping piece and external back mould fixed connection, just the stopping piece install in the bottom of hydro-cylinder connecting block, every core rod through the core rod connecting block that corresponds with the hydro-cylinder connecting block is connected, the hydro-cylinder with the plane at a plurality of core rod place sets up perpendicularly, the drive direction of hydro-cylinder is perpendicular with the direction of loosing core, and for prior art, simple structure, processing is convenient, dismouting, and maintenance is convenient, and manufacturing and application cost are low, and the stable performance, and work efficiency is high, and the security is high.
Drawings
Fig. 1 is a schematic view of the whole structure of the cylinder core-pulling retaining mechanism of the present invention;
fig. 2 is another schematic overall structure diagram of the cylinder core-pulling retaining mechanism of the present invention;
FIG. 3 is a schematic cross-sectional view of the cylinder core-pulling retaining mechanism of the present invention;
FIG. 4 is a schematic view of the force analysis of the cylinder core-pulling retaining mechanism of the present invention;
fig. 5 is the utility model discloses the stroke schematic diagram of loosing core of hydro-cylinder stopping mechanism of loosing core.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Please refer to fig. 1 to 3, the utility model provides an oil cylinder core pulling stopping mechanism, this oil cylinder core pulling stopping mechanism include a plurality of core rod 30 that oil cylinder 10, stopping block 20 and level set up side by side, oil cylinder 10 is connected with external core 40 and oil cylinder connecting block 50 respectively, just oil cylinder 10 is located oil cylinder connecting block 50's top, stopping block 20 and external back mould 60 fixed connection, just stopping block 20 install in oil cylinder connecting block 50's bottom, every core rod 30 through the corresponding core rod connecting block 70 with oil cylinder connecting block 50 is connected, oil cylinder 10 with the plane at a plurality of core rod 30 place sets up perpendicularly, the drive direction of oil cylinder 10 is perpendicular with the direction of loosing core.
The contact surfaces of the oil cylinder connecting block 50 and the core rod connecting block 70 are inclined planes. The oil cylinder 10 is fixedly connected with the external mold core 40 through screws.
The following combines fig. 4 and fig. 5 to be right the utility model discloses the effect principle of hydro-cylinder core pulling stopping mechanism is elaborated further in detail, wherein, F0 is core pulling rod 30 backspacing, and S1 is hydro-cylinder 10 stroke, and S0 is the stroke of loosing core, and theta does core pulling rod connecting block 70 and hydro-cylinder connecting block 50' S contact angle.
During high-pressure injection molding, the stress of the core rod 30 is transmitted to the oil cylinder 10 and the backstop block 20 through the core rod connecting block 70 and the oil cylinder connecting block 50, and the stress analysis is shown in fig. 4; the retraction force of the core rod 30 is F0, since the core rod connecting block 70 and the cylinder connecting block 50 are in inclined plane contact, they can be divided into vertical upward F1 and horizontal rightward F2, the inclined plane angle is θ, and can be calculated:
f1 ═ F0 × sin θ, all acting on the cylinder 10, will cause the retraction of the cylinder 10;
f2 ═ F0 × cos θ, all act on the stop block 20, the stop block 20 is independent from the core 40, and has no effect on the cylinder 10;
on the contrary, the driving force of the oil cylinder 10 is also decomposed, and the force F4 acting on the plunger 30 is F3 cos θ, which is used for die sealing;
the stroke analysis is shown in fig. 5, where S1 is S0 × cot θ, S1 is the stroke of the cylinder 10(4), and S0 is the stroke of the plunger 30 (2).
To sum up: theta is reduced, the withdrawal force F1 born by the oil cylinder 10 is also reduced, the backstop effect is better, the driving force F4 transmitted by the oil cylinder 10 is larger, the glue sealing effect is better, and flashing is not easy to run, but the core-pulling stroke S1 of the oil cylinder 10 is increased, the sizes of the die and the oil cylinder 10 are affected, comprehensive consideration and verification are carried out, and as an optimal implementation mode, the theta is preferably 15-20 degrees.
The oil cylinder core-pulling retaining mechanism can effectively prevent core-pulling and returning, avoids the problems of oil leakage, loss and fatigue fracture of limit oil pressure, has good sealing effect, solves the problems of product surface flash, fracture difference and contraction print caused by unstable process, reduces the resource waste caused by manual repair and batch scrapping, and has no need of additionally increasing the size of a template because the oil cylinder 10 is changed into vertical installation, so that the resource of an injection molding machine table is more effectively utilized.
The utility model discloses hydro-cylinder stopping mechanism of loosing core has following advantage:
a. the structure is simple: the oil cylinder core-pulling backstop mechanism is formed by matching a core-pulling rod connecting block, an oil cylinder connecting block and a backstop block, and does not have a complex motion control mechanism;
b. the processing is convenient: the components are square blocks with simple shapes, and only simple CNC or linear cutting machining is needed;
c. the disassembly, the assembly and the maintenance are convenient: the oil cylinder is vertically arranged and is externally connected with an oil pipe, and the oil cylinder connecting block is linked with the oil cylinder through a T-shaped groove;
d. the efficiency is high: the structure is simple, the disassembly, the assembly and the maintenance are convenient, the workload is small, and the efficiency is high;
e. the safety is improved: the oil cylinder does not need to work under the limit oil pressure, so that the problems of oil leakage, fatigue fracture and the like are avoided;
f. the manufacturing cost is low: the oil cylinder is vertically installed, the size of the die is reduced, and the corresponding manufacturing cost of processing, assembly and the like is low;
g. the application cost is low: the tonnage of the matched injection molding machine is reduced, resources are more effectively utilized, and the application cost is reduced;
h. the performance is stable: the required sealing effect can be achieved by adopting smaller oil pressure, the loss to a motion mechanism is small, and the performance is stable.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (3)
1. The utility model provides an hydro-cylinder stopping mechanism of loosing core, its characterized in that, includes hydro-cylinder, stopping piece and a plurality of core rod that the level set up side by side, the hydro-cylinder is connected with external core and hydro-cylinder connecting block respectively, just the hydro-cylinder is located the top of hydro-cylinder connecting block, stopping piece and external back mould fixed connection, just stopping piece install in the bottom of hydro-cylinder connecting block, every core rod through the core rod connecting block that corresponds with the hydro-cylinder connecting block is connected, the hydro-cylinder with the plane at a plurality of core rod places sets up perpendicularly, the drive direction of hydro-cylinder is perpendicular with the direction of loosing core.
2. The oil cylinder core-pulling retaining mechanism according to claim 1, wherein the surfaces of the oil cylinder connecting block and the core-pulling rod connecting block, which are in contact with each other, are inclined surfaces.
3. The oil cylinder core-pulling retaining mechanism according to claim 1, wherein the oil cylinder is fixedly connected with the external core through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370064.9U CN209937569U (en) | 2019-03-22 | 2019-03-22 | Oil cylinder core-pulling retaining mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370064.9U CN209937569U (en) | 2019-03-22 | 2019-03-22 | Oil cylinder core-pulling retaining mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209937569U true CN209937569U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920370064.9U Active CN209937569U (en) | 2019-03-22 | 2019-03-22 | Oil cylinder core-pulling retaining mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209937569U (en) |
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2019
- 2019-03-22 CN CN201920370064.9U patent/CN209937569U/en active Active
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