CN214814661U - Extrusion pin mechanism - Google Patents
Extrusion pin mechanism Download PDFInfo
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- CN214814661U CN214814661U CN202120275239.5U CN202120275239U CN214814661U CN 214814661 U CN214814661 U CN 214814661U CN 202120275239 U CN202120275239 U CN 202120275239U CN 214814661 U CN214814661 U CN 214814661U
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Abstract
The utility model relates to an extrusion pin mechanism, which comprises a fixed plate, an oil cylinder, an embedding needle plate and at least one extrusion pin; the oil cylinder is arranged on the fixing plate; the needle embedding plate and the fixing plate are arranged in a sliding manner; the output end of the oil cylinder is connected with the first end face of the needle embedding plate and drives the needle embedding plate to move relative to the fixed plate; and the first end of the extrusion pin is arranged on the second end surface of the needle embedding plate. The extrusion pin mechanism of the utility model realizes the extrusion function of the mould in a narrower space by adopting the novel technology that the pin embedding plate drives the extrusion pin to extrude, thereby avoiding the problem that the extrusion pin cannot be added due to insufficient mould space; the utility model discloses simple structure has simplified the mould structure greatly, realizes easily.
Description
Technical Field
The utility model relates to an extrusion round pin technical field especially relates to an extrusion round pin mechanism.
Background
The die casting process is a process for unifying pressure, speed and time by utilizing three major factors of a die casting machine, a die, alloy and the like. The pressure is used for metal hot working, and the pressure is the main characteristic of a die casting process to distinguish other casting methods. Pressure casting is a special casting method which is developed faster in the modern metal processing technology and has less cutting and no cutting. The method is a process of filling a casting mold with molten metal at high pressure and high speed, and crystallizing and solidifying the molten metal at high pressure to form a casting.
In order to increase the density of the casting, the size of the pores and the volume of the shrinkage cavities are compressed to the maximum possible extent, and one type of die casting is called "extrusion die casting". In the extrusion die casting, an 'extrusion pin' is arranged at a position where air holes are dense and a position where shrinkage holes are easy to generate. During die-casting, when the pressure boost starts (some professional extrusion die casting machines still set up extrusion start time control circuit and oil circuit), start "extrusion round pin", the extrusion foundry goods makes gas pocket and shrinkage cavity pressurized shrink. The extrusion pin is mostly a core-shaped metal cylinder and is used for extruding castings under the pushing of an oil cylinder.
At present, most of die casting molds in the die casting industry use an extrusion pin form, and the extrusion pin is pushed to move by adopting an extrusion oil cylinder, so that the defect part is extruded, and when the space of the mold is small, the ejector pin and water are interfered, part of the positions cannot use the extrusion pin.
In addition, because the die temperature is too high in the die-casting process, the clearance between the extrusion pin and the pin sleeve is easy to block due to thermal expansion, the extrusion pin is easy to break when the extrusion pin is removed from the die, an aluminum drawing die is easy to adhere in the extrusion process, the pin is easy to suffer from thermal fatigue and surface crack, the service life of the extrusion pin is greatly reduced, and batch production is not easy.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model discloses an it is not enough to overcome shortcoming and not enough among the prior art, provides an extrusion round pin mechanism.
An extrusion pin mechanism comprises a fixed plate, an oil cylinder, an embedding needle plate and at least one extrusion pin;
the oil cylinder is arranged on the fixing plate;
the needle embedding plate and the fixing plate are arranged in a sliding manner; the output end of the oil cylinder is connected with the first end face of the needle embedding plate and drives the needle embedding plate to move relative to the fixed plate;
and the first end of the extrusion pin is arranged on the second end surface of the needle embedding plate.
The extrusion pin mechanism of the utility model realizes the extrusion function of the mould in a narrower space by adopting the novel technology that the pin embedding plate drives the extrusion pin to extrude, thereby avoiding the problem that the extrusion pin cannot be added due to insufficient mould space; the utility model discloses simple structure has simplified the mould structure greatly, realizes easily.
Furthermore, a plurality of guide pillars are arranged on the first end face of the needle embedding plate, a plurality of guide holes are arranged on the fixing plate, each guide hole corresponds to each guide pillar, and each guide pillar is arranged in the corresponding guide hole in a sliding manner.
The beneficial effects of adopting above-mentioned further scheme are that, realize inlaying the relative movement of faller and fixed plate through setting up guide pillar and guide hole, simple structure realizes easily.
Furthermore, a sliding bearing bush is sleeved in each guide hole; each guide post is arranged in the corresponding sliding bearing bush in a sliding way.
The beneficial effect who adopts above-mentioned further scheme is through setting up the slip axle bush, avoids guide pillar and guide hole direct friction contact, reduces the wearing and tearing of guide pillar and guide hole, cost and time when greatly reduced mould maintenance.
Further, the utility model also comprises a plurality of needle sleeves; the needle sleeve is arranged in the die and corresponds to the extrusion pin; the first end of the needle sleeve is provided with a through hole for the first end of the extrusion pin to pass through; the second end of the needle sleeve is provided with an extrusion hole which is communicated with the through hole; the extrusion hole is of a flaring structure, and the minimum diameter of the extrusion hole is larger than the outer diameter of the extrusion pin.
The beneficial effects of adopting above-mentioned further scheme are that, through the extrusion hole that sets up flaring structure, can get into the extrusion hole when extrudeing the product, need not to contact with the inner wall of needle cover, can avoid the mould temperature higher and lead to extrusion round pin and needle cover card to die, can not adhesion mould or adhesion product among the extrusion process, the extrusion round pin is not fragile, improves life.
Further, the pressing pin includes a fixed portion and a movable portion; the first end of the fixing part is arranged on the second end surface of the pin inserting plate; the first end of the moving part is provided with a sliding groove, the second end of the fixed part is arranged in the sliding groove in a sliding manner, and the second end part of the fixed part and the first end part of the moving part are provided with clamping structures; and a pin head is arranged at the second end of the moving part and is arranged in the through hole of the needle sleeve in a sliding manner.
The beneficial effects of adopting above-mentioned further scheme are that, through the extrusion round pin of fixed part and the combination of removal portion, design the extrusion round pin into extending structure, saved the space of mould with inlaying the faller greatly, improved the bulk strength of extrusion round pin simultaneously, and after the round pin head damages, only need change the removal portion can, reduced the maintenance cost.
Furthermore, a threaded hole is formed in the second end face of the needle embedding plate; the first end of the fixing part is in threaded connection with the threaded hole of the pin inserting plate.
The beneficial effect who adopts above-mentioned further scheme is through with fixed part and inlay needle board threaded connection, under the unchangeable circumstances of hydro-cylinder stroke, the position of accessible screw thread regulation fixed part, and then the distance of the ejecting removal portion of regulation fixed part, adjusts the degree of depth that the round pin head stretched into in the extrusion hole promptly, and then the extrusion effect of regulation and control round pin head to the product.
Furthermore, a water pipeline is arranged inside the pin head.
The beneficial effect who adopts above-mentioned further scheme is that, through at the inside water pipeline that sets up of round pin head, can inject cooling water in the water pipeline, in time cool down to the round pin head, guarantee that the extrusion round pin can not lead to the cracked phenomenon in surface because of the change of temperature, improve the life of extrusion round pin, can avoid extrusion round pin adhesion mould or adhesion product simultaneously, improve product quality.
Further, the side surface of the second end of the pin head is provided with a draft angle.
The beneficial effect who adopts above-mentioned further scheme is, the side of the second end of round pin head is equipped with the draft, can further avoid extrusion round pin adhesion mould or adhesion product, improves product quality.
Furthermore, a distance measuring sensor is correspondingly arranged on the second end surface of the fixing part and the bottom surface of the sliding groove.
Adopt above-mentioned further scheme's beneficial effect be, through setting up range sensor, can be when the fixed part is adjusted to the screw thread, but the stroke distance between accurate detection fixed part and the removal portion.
Further, a pressure sensor is arranged on the second end surface of the fixing part or the bottom surface of the sliding groove; the inlet of the water passage is connected with a water pump; the pressure sensor is electrically connected with the water pump.
The beneficial effect who adopts above-mentioned further scheme is that, through setting up pressure sensor, when the fixed part pushes up into the removal portion, pressure sensor detects pressure, and then control water pump starts, can pour into the cooling water into at the water service pipeline before making the round pin head get into the extrusion hole, in time cools off.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of the extruding pin mechanism of the present invention;
fig. 2 is a schematic structural view of the extrusion pin and the needle sleeve of the present invention.
In the figure: 10. a fixing plate; 11. a guide hole; 12. a sliding bearing bush; 20. an oil cylinder; 30. embedding a needle plate; 31. a guide post; 32. a threaded hole; 41. a fixed part; 42. a moving part; 421. a chute; 422. a pin head; 423. a water pipeline; 43. a snap projection; 50. a needle sleeve; 51. a through hole; 52. extruding the hole; 60. a mold; 70. a ranging sensor; 80. a pressure sensor.
Detailed Description
Referring to fig. 1 and 2, an extrusion pin mechanism of the present embodiment includes a fixing plate 10, an oil cylinder 20, a needle inserting plate 30, a plurality of extrusion pins, a plurality of needle sleeves 50 whose number is the same as that of the extrusion pins, and a mold 60;
specifically, the oil cylinder 20 is arranged on the fixing plate 10;
specifically, the needle embedding plate 30 and the fixing plate 10 are arranged in a sliding manner; the output end of the oil cylinder 20 is connected with the first end face of the needle embedding plate 30 and drives the needle embedding plate 30 to move relative to the fixed plate 10;
more specifically, a plurality of guide pillars 31 are arranged on the first end surface of the needle embedding plate 30, a plurality of guide holes 11 are arranged on the fixing plate 10, each guide hole 11 is arranged corresponding to each guide pillar 31, and each guide pillar 31 is arranged in the corresponding guide hole 11 in a sliding manner;
more specifically, a sliding bearing bush 12 is sleeved in each guide hole 11; each guide post 31 is slidably disposed in the corresponding sliding bush 12.
Specifically, the first end of the pressing pin is disposed on the second end surface of the insert pin plate 30;
specifically, the needle sleeve 50 is arranged in the mold 60, and the needle sleeve 50 is arranged corresponding to the extrusion pin; the first end of the needle sleeve 50 is provided with a through hole 51 for the first end of the extrusion pin to pass through; the second end of the needle sleeve 50 is provided with an extrusion hole 52, and the extrusion hole 52 is communicated with the through hole 51; the extrusion hole 52 is a flaring structure, and the minimum diameter of the extrusion hole 52 is larger than the outer diameter of the extrusion pin.
In the preferred embodiment, the pressing pin includes a fixed portion 41 and a movable portion 42; a first end of the fixing portion 41 is disposed on a second end surface of the insert pin plate 30; the first end of the moving part 42 is provided with a sliding slot 421, the second end of the fixing part 41 is slidably disposed in the sliding slot 421, and the second end of the fixing part 41 and the first end of the moving part 42 are provided with a detent structure, which can be realized by providing corresponding detent protrusions 43 at the first end of the sliding slot 421 of the moving part 42 and the second end of the fixing part 41, so as to prevent the second end of the fixing part 41 from disengaging from the sliding slot 421; the second end of the moving part 42 is provided with a pin head 422, and the pin head 422 is slidably arranged in the through hole 51 of the needle sleeve 50;
the side of the second end of the pin head 422 is provided with a draft angle.
In the preferred embodiment, the second end surface of the insert needle plate 30 is provided with a threaded hole 32; a first end of the fixing portion 41 is screwed into the screw hole 32 of the insert plate 30.
In the preferred embodiment, a water pipe 423 is provided inside the pin head 422.
In a preferred embodiment, the second end surface of the fixing portion 41 is provided with a distance measuring sensor 70 corresponding to the bottom surface of the sliding chute 421.
In a preferred embodiment, the second end surface of the fixing portion 41 or the bottom surface of the sliding chute 421 is provided with a pressure sensor 80; the inlet of the water passage is connected with a water pump; the pressure sensor 80 is electrically connected with the water pump.
The working process of the embodiment:
the oil cylinder 20 pushes the needle embedding plate 30 to move, and then the needle embedding plate 30 drives the extrusion pin to move;
specifically, the insert pin plate 30 pushes the fixing portion 41, and after moving a certain distance, the second end of the fixing portion 41 abuts against the bottom surface of the sliding groove 421, so as to drive the moving portion 42 to move, and then the pin 422 originally in the through hole 51 enters the extrusion hole 52, and extrudes the product;
meanwhile, when the second end of the fixing portion 41 abuts against the bottom surface of the sliding chute 421, the pressure sensor 80 detects the pressure, and then the water pump is controlled to start, so that the cooling water can be injected into the water passage 423 before the pin 422 enters the extrusion hole 52, and the cooling can be performed in time.
The user can adjust the position relation between the fixing part 41 and the needle inserting plate 30 through the screw thread, and then adjust the stroke distance of the fixing part 41 ejecting the moving part 42 under the condition that the stroke of the oil cylinder 20 is not changed, namely, adjust the depth of the pin head 422 extending into the extrusion hole 52, and further adjust and control the extrusion effect of the pin head 422 on the product.
Compared with the prior art, the utility model realizes the extrusion function of the die in a narrower space by adopting the novel technology that the pin plate is embedded with the pin plate to drive the extrusion pin to extrude, thereby avoiding the problem that the extrusion pin cannot be added due to insufficient die space; the utility model discloses simple structure has simplified the mould structure greatly, realizes easily.
Additionally, the utility model discloses still have following beneficial effect:
the relative movement of the needle embedding plate and the fixed plate is realized by arranging the guide pillar and the guide hole, the structure is simple, and the realization is easy.
Through setting up the slip axle bush, avoid guide pillar and guide hole direct friction contact, reduce the wearing and tearing of guide pillar and guide hole, cost and time when greatly reduced mould maintenance.
Through the extrusion hole that sets up flaring structure, can get into the extrusion hole when extrudeing the product, need not to contact with the inner wall of needle cover, can avoid the mould temperature higher and lead to extrusion round pin and needle cover card to die, can not adhesion mould or adhesion product among the extrusion process, the extrusion round pin is not fragile, improves life.
The extrusion pin is combined by the fixed part and the moving part, the extrusion pin is designed into a telescopic structure, the space between a die and the inlaid needle plate is greatly saved, the overall strength of the extrusion pin is improved, and only the moving part needs to be replaced after the pin head is damaged, so that the maintenance cost is reduced.
Through with fixed part and inlay needle board threaded connection, under the unchangeable circumstances of hydro-cylinder stroke, the position of accessible screw thread regulation fixed part, and then the distance of the ejecting removal portion of regulation fixed part, adjust the degree of depth that the round pin head stretched into the extrusion hole promptly, and then the extrusion effect of regulation and control round pin head to the product.
The side of the second end of the pin head is provided with a draft angle, so that the extrusion pin can be further prevented from being adhered to a die or a product, and the product quality is improved.
Through at the inside water pipeline that sets up of round pin head, can inject cooling water in the water pipeline, in time cool down to the round pin head, guarantee that the extrusion round pin can not lead to the cracked phenomenon in surface because of the change of temperature, improve the life of extrusion round pin, can avoid extrusion round pin adhesion mould or adhesion product simultaneously, improve product quality.
Through setting up range sensor, can be when the fixed part is adjusted to the screw thread, the stroke distance between can accurate detection fixed part and the removal portion.
Through setting up pressure sensor, when the fixed part pushed into the removal portion, pressure sensor detected pressure, and then the control water pump starts, can pour into the cooling water into at the water pipeline before making the round pin head get into the extrusion hole, in time cools off.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. An extrusion pin mechanism is characterized by comprising
A fixed plate (10);
the oil cylinder (20), the said oil cylinder (20) is set up on the said dead plate (10);
the needle embedding plate (30), the needle embedding plate (30) and the fixing plate (10) are arranged in a sliding mode; the output end of the oil cylinder (20) is connected with the first end face of the needle embedding plate (30) and drives the needle embedding plate (30) to move relative to the fixing plate (10);
at least one extrusion pin, the first end of which is arranged on the second end surface of the needle embedding plate (30).
2. The squeeze pin mechanism according to claim 1, wherein the needle insertion plate (30) has a plurality of guide posts (31) on a first end surface thereof, the fixing plate (10) has a plurality of guide holes (11), each guide hole (11) is disposed corresponding to each guide post (31), and each guide post (31) is slidably disposed in the corresponding guide hole (11).
3. The squeeze pin mechanism according to claim 2, wherein a sliding bush (12) is fitted in each guide hole (11); each guide post (31) is arranged in the corresponding sliding bearing bush (12) in a sliding way.
4. The squeeze pin mechanism of claim 3, further comprising a plurality of needle sleeves (50); the needle sleeve (50) is arranged in the die (60), and the needle sleeve (50) is arranged corresponding to the extrusion pin; the first end of the needle sleeve (50) is provided with a through hole (51) for the first end of the extrusion pin to pass through; the second end of the needle sleeve (50) is provided with an extrusion hole (52), and the extrusion hole (52) is communicated with the through hole (51); the extrusion hole (52) is of a flaring structure, and the minimum diameter of the extrusion hole (52) is larger than the outer diameter of the extrusion pin.
5. The pressing pin mechanism according to claim 4, wherein the pressing pin comprises a fixed portion (41) and a moving portion (42); the first end of the fixing part (41) is arranged on the second end surface of the needle embedding plate (30); a sliding groove (421) is formed in the first end of the moving part (42), the second end of the fixing part (41) is arranged in the sliding groove (421) in a sliding mode, and clamping structures are formed in the second end of the fixing part (41) and the first end of the moving part (42); the second end of the moving part (42) is provided with a pin head (422), and the pin head (422) is arranged in the through hole (51) of the needle sleeve (50) in a sliding manner.
6. The squeeze pin mechanism of claim 5, wherein the second end face of the insert plate (30) is provided with a threaded hole (32); the first end of the fixing part (41) is in threaded connection with a threaded hole (32) of the needle embedding plate (30).
7. The squeeze pin mechanism of claim 6, wherein a water passage (423) is provided inside the pin head (422).
8. The squeeze pin mechanism of claim 7, wherein the sides of the second end of the pin head (422) are provided with draft angles.
9. The squeeze pin mechanism according to claim 8, wherein the second end surface of the fixed portion (41) is provided with a distance measuring sensor (70) corresponding to the bottom surface of the slide groove (421).
10. The squeeze pin mechanism according to claim 9, wherein a second end surface of the fixing portion (41) or a bottom surface of the chute (421) is provided with a pressure sensor (80); the inlet of the water pipeline is connected with a water pump; the pressure sensor (80) is electrically connected with the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120275239.5U CN214814661U (en) | 2021-01-29 | 2021-01-29 | Extrusion pin mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120275239.5U CN214814661U (en) | 2021-01-29 | 2021-01-29 | Extrusion pin mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214814661U true CN214814661U (en) | 2021-11-23 |
Family
ID=78880470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120275239.5U Active CN214814661U (en) | 2021-01-29 | 2021-01-29 | Extrusion pin mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214814661U (en) |
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2021
- 2021-01-29 CN CN202120275239.5U patent/CN214814661U/en active Active
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