CN212664701U - Ejection mechanism of automobile drawing die - Google Patents
Ejection mechanism of automobile drawing die Download PDFInfo
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- CN212664701U CN212664701U CN202021459255.1U CN202021459255U CN212664701U CN 212664701 U CN212664701 U CN 212664701U CN 202021459255 U CN202021459255 U CN 202021459255U CN 212664701 U CN212664701 U CN 212664701U
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Abstract
The utility model discloses an automobile drawing die's ejection mechanism, including the blank holder, spacing insert, the cylinder, the fore-set, spliced pole and bolt, the bottom of blank holder is provided with the foundation, spacing insert and install the bottom at the foundation, the bottom of spacing inserting is installed to the cylinder, the position corresponds the vertical through-hole of seting up mutual intercommunication on blank holder and the foundation, spacing upper and lower both ends of inserting the middle part set up the first blind hole and the second blind hole of mutual intercommunication respectively, first blind hole equals and is greater than the radius of second blind hole with the through-hole radius, the fore-set sets up in through-hole and first blind hole, the bottom of fore-set is seted up flutedly, the spliced pole is pegged graft in the recess, the pinhole has been seted up at the top of spliced pole, the waist shape hole with the recess intercommunication is seted up to the bottom of fore-set, the bolt is pegged graft in. The utility model discloses improve to the problem that current drawing die produced the drawing trace easily, the utility model has the advantages of be difficult for producing the drawing trace.
Description
Technical Field
The utility model relates to an automobile drawing die technical field especially relates to an ejection mechanism of automobile drawing die.
Background
Because the production efficiency of the automobile is improved at present, the production efficiency of the automobile covering part needs to be improved so as to adapt to the design period of the automobile type. The manual line production mould covering can waste a lot of time at the in-process such as putting location, the transmission of fore-and-aft order of plate, consequently adopts the main flow trend that the automatic line production will be the production of back automobile covering, and the mould design is also with the current, adapts to the development.
The drawing die plays a great role in an automatic production line of automobile covering parts, and generally comprises an upper die, a blank holder and a lower die from top to bottom, wherein the upper die is generally concave, the lower die is generally convex, the blank holder is an annular part, the middle part of the blank holder is hollow, the blank holder is connected with the lower die through an elastic buffer part, when the drawing die works, a plate is placed on the blank holder, the upper die moves downwards firstly until the upper die is matched with the blank holder to press the plate tightly, then the blank holder and the upper die move downwards together, so that the plate is drawn and formed gradually between the upper die and the lower die, the formed plate needs to be taken out of the die after being rolled and formed, however, the plate can be tightly attached to the blank holder after being drawn and formed, and is difficult to take off, in the design of the traditional drawing die, the plate is clamped by an automatic manipulator, the abdication is usually designed, so that the manipulator can extend to, the drawing die is clamped, but for the drawing die, because the plate is formed on the molded surface in a flowing mode, the requirement on the molded surface is high, the sheet is drawn in the flowing forming process due to the abdication design, the surface quality of a product is influenced, therefore, an ejection mechanism needs to be designed to allow the manipulator to have enough space to clamp the plate without affecting the product quality, wherein, the cylinder can meet the jacking requirement, the cylinder is arranged to jack the material firstly on the molded surface, so that the ejection column can move up and down to eject the plate material, but the stroke of the cylinder has an error of 2-3 mm, therefore, the conditions of more retreating and less retreating are always generated after the cylinder retreats, the heights of the molded surfaces are inconsistent when the more retreating and the less retreating are both generated, therefore, in the next drawing process, the plate also generates drawing marks, so that an ejection mechanism capable of eliminating return stroke errors of the cylinder is urgently needed.
To above technical problem, the utility model discloses an ejection mechanism of car drawing die utensil, the utility model has the advantages of can eliminate return stroke error, the plate of cylinder and can not appear drawing the trace when drawing the shaping, improve the quality of automobile covering.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an ejection mechanism of car drawing die utensil to solve among the prior art plate and prolong fashioned in-process in drawing die and can produce and draw the trace, reduced technical problem such as quality of automobile panel, the utility model has the advantages of can not appear drawing the trace, having improved the quality of automobile panel when can eliminate return stroke error, the plate drawing shaping of cylinder.
The utility model discloses a following technical scheme realizes: the utility model discloses an ejection mechanism of an automobile drawing die, which comprises a blank holder, a limiting insert, a cylinder, a top post, a connecting post and a bolt, wherein the bottom end of the blank holder is provided with a bottom post at intervals, the limiting insert is fixedly arranged at the bottom end of the bottom post, the top end of the cylinder is provided with a cylinder mounting plate, the cylinder mounting plate is fixedly connected with the bottom end of the limiting insert, the blank holder corresponds to the bottom post and is vertically provided with through holes which are communicated with each other, the upper end and the lower end of the middle part of the limiting insert are respectively provided with a first blind hole and a second blind hole, the first blind hole is communicated with the second blind hole, the circle centers of the first blind hole, the second blind hole and the through hole are on the same vertical axis, the radius of the first blind hole is equal to that of the through hole, the radius of the second blind hole is smaller than that of the first blind hole, the top post is arranged, the top of fore-set and the top of blank holder are located the coplanar, the bottom of fore-set is seted up flutedly, peg graft in the recess at the top of spliced pole, the bottom of spliced pole is located the second blind hole, and the top of spliced pole can slide from top to bottom in the recess, the pinhole has transversely been seted up at the top of spliced pole, waist shape hole has transversely been seted up to the bottom of fore-set, waist shape hole and recess intercommunication, the bolt is pegged graft downtheholely at pinhole and waist shape, and the bolt is located the middle part in waist shape hole, the middle part of cylinder mounting panel is provided with dodges the hole, the tailpiece of the piston rod portion of cylinder upwards passes in proper order and dod.
Further, in order to facilitate installation and disassembly between the piston rod of the cylinder and the connecting column, the end part of the piston rod of the cylinder is provided with an external thread, the bottom end of the connecting column is provided with a screw hole, an internal thread is arranged in the screw hole, and the end part of the piston rod of the cylinder is fixed in the screw hole through the external thread and the internal thread in a screwed connection mode.
Furthermore, in order to facilitate the installation and the disassembly of the blank holder and the limiting insert and the cylinder mounting plate, the blank holder and the limiting insert are fixedly welded and the limiting insert and the cylinder mounting plate are fixedly connected through bolts.
Furthermore, in order to well eliminate errors generated after the return stroke of the cylinder, the height of the waist-shaped hole is 7-9 mm.
The utility model has the advantages of it is following: the utility model limits the top column through the limiting insert block, so that the top column can not continue to move downwards when falling to contact with the limiting insert block, at the moment, the top end of the top column and the top end of the blank holder are positioned on the same plane, meanwhile, the bottom end of the top column is provided with a groove, the top of the connecting column is inserted in the groove, the top of the connecting column can slide up and down in the groove, the top of the connecting column is transversely provided with a pin hole, the bottom of the top column is transversely provided with a waist-shaped hole which is communicated with the groove, a bolt is inserted in the pin hole and the waist-shaped hole, and the bolt is positioned in the middle of the waist-shaped hole, so that when the return stroke of the cylinder is too much, the bolt can move downwards in the waist-shaped hole, when the return stroke of the cylinder is less, the bolt can move upwards in the waist-shaped hole, thereby eliminating the error generated after the return stroke of the cylinder, thereby the top, the flatness of the top surface of the blank holder is ensured, so that the plate cannot generate pull marks in the drawing forming process, and the quality of the automobile covering part is improved.
Drawings
Fig. 1 is a sectional view of the present invention;
FIG. 2 is a sectional view of a partial structure of a blank holder;
FIG. 3 is a cross-sectional view of a spacing insert;
FIG. 4 is a cross-sectional view of the top post;
FIG. 5 is a cross-sectional view of a connecting stud;
fig. 6 is a sectional view of the cylinder mounting plate.
In the figure: 1. a blank holder; 2. a limiting insert; 21. a first blind hole; 22. a second blind hole; 3. a cylinder; 31. a cylinder mounting plate; 32. an external thread; 311. avoiding holes; 4. a top pillar; 41. a groove; 42. a waist-shaped hole; 5. connecting columns; 51. a pin hole; 52. a screw hole; 521. an internal thread; 6. a bolt; 7. a bottom pillar; 8. and a through hole.
Detailed Description
The following embodiments of the present invention are described in detail, and the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments, and in the description of the present invention, words like "front", "back", "left", "again" etc. indicating directions or position relations are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
Example 1
Embodiment 1 discloses an ejection mechanism of an automobile drawing die, as shown in fig. 1, which comprises a blank holder 1, a limiting insert 2, a cylinder 3, a top pillar 4, a connecting pillar 5 and a bolt 6, wherein the bottom end of the blank holder 1 is provided with bottom pillars 7 at intervals, the blank holder 1 is annular and is matched with the shape of a plate to be drawn, which is not described in detail in the drawings in the specification, specifically, the bottom of the blank holder 1 is provided with at least three bottom pillars at intervals, so that the drawn plate can be well ejected upwards from the blank holder 1 through the ejection mechanism, a manipulator can conveniently clamp the plate, the limiting insert 2 is fixedly installed at the bottom end of the bottom pillar 7, specifically, the blank holder 1 and the limiting insert 2 are fixedly welded, the top end of the cylinder 3 is provided with a cylinder installation plate 31, and the cylinder installation plate 31 is fixedly connected with the bottom end of the limiting insert 2, the limiting insert 2 is fixedly connected with the cylinder mounting plate 31 through a bolt (not marked in the figure); as shown in fig. 1 and 2, through holes 8 which are communicated with each other are vertically formed on the blank holder 1 and the bottom column 7 at corresponding positions; as shown in fig. 1 and 3, the upper end and the lower end of the middle part of the limiting insert 2 are respectively provided with a first blind hole 21 and a second blind hole 22, the first blind hole 21 is communicated with the second blind hole 22, the circle centers of the first blind hole 21, the second blind hole 22 and the through hole 8 are on the same vertical axis, the radius of the first blind hole 21 is equal to that of the through hole 8, and the radius of the second blind hole 22 is smaller than that of the first blind hole 21; as shown in fig. 1, 2 and 3, the top pillar 4 is arranged in the through hole 8 and the first blind hole 21, the outer wall of the top pillar 4 is attached to the inner wall of the through hole 8 and the inner wall of the first blind hole 21, and the top end of the top pillar 4 and the top end of the blank holder 1 are located on the same plane; as shown in fig. 1 and 4, a groove 41 is formed at the bottom end of the top column 4, the top of the connecting column 5 is inserted into the groove 41, the bottom of the connecting column 5 is located in the second blind hole 22, and the top of the connecting column 5 can slide up and down in the groove 41; as shown in fig. 5, the top of the connecting column 5 is transversely provided with a pin hole 51; as shown in fig. 4, a waist-shaped hole 42 is transversely formed in the bottom of the top column 4, the height of the waist-shaped hole 42 is 7-9 mm, and the waist-shaped hole 42 is communicated with the groove 41; as shown in fig. 1, 4 and 5, the bolt 6 is inserted into the pin hole 51 and the kidney-shaped hole 42, and the bolt 6 is located in the middle of the kidney-shaped hole 42; as shown in fig. 6, the middle of the cylinder mounting plate 31 is provided with an avoidance hole 311; as shown in fig. 1 and 6, the end of the piston rod of the cylinder 3 sequentially penetrates through the avoidance hole 311 and the second blind hole 22 upward to be fixedly connected with the bottom end of the connection column 5, specifically, the end of the piston rod of the cylinder 3 is provided with an external thread 32, the bottom end of the connection column 5 is provided with a screw hole 52, an internal thread 521 is arranged in the screw hole 52, and the end of the piston rod of the cylinder 3 is fixed in the screw hole 52 by the external thread 32 and the internal thread 521 in a threaded manner.
The working process of the utility model is as follows: the drawing die generally comprises an upper die (not marked in the figure), a blank holder 1 and a lower die (not marked in the figure), wherein the upper die is generally concave, the lower die is generally convex, the blank holder 1 is a ring-shaped member, the middle part of the blank holder is hollow, the blank holder 1 is arranged at the top end of the lower die through an elastic buffer (not marked in the figure), when the drawing die works, a plate is firstly placed at the top end of the blank holder 1, then the upper die of the drawing die is controlled to move downwards, so that the upper die is gradually contacted with the plate on the blank holder 1 and continuously moves downwards, the elastic buffer is compressed, an upward jacking force is generated on the blank holder 1, the upper die and the blank holder 1 are enabled to press the plate, the upper die is continuously controlled to move downwards, the elastic buffer is continuously compressed, the upper die, the blank holder 1 and the plate move downwards together, so that the plate is gradually drawn and formed between the upper die and the lower die, after a plate is drawn and formed, the upper die is controlled to move upwards to sequentially leave the lower die and the blank holder 1, then the piston rod of the cylinder 3 is controlled to extend out, so that the cylinder drives the connecting post 5 to move upwards, the ejection post 4 is further controlled to move upwards to eject the plate from the blank holder 1, at the moment, a manipulator is convenient to clamp the plate, when the die is closed again, the upper die moves downwards to press the ejection post 4 downwards, when the ejection post 4 is pressed downwards to be in contact with the limiting insert 2, the ejection post is limited and can not move downwards any more, at the moment, the top end of the ejection post 4 and the top end of the blank holder 1 are positioned on the same plane, the upper die and the blank holder 1 compress the plate, errors after the return stroke of the cylinder 3 are offset by the up-and-down sliding of the two ends of the bolt 6 in the kidney-shaped hole 42, when the cylinder 3 has more return strokes, the end part of the, when the return stroke of the cylinder 3 is small, the end part of the piston rod of the cylinder 3 is higher relative to the original position, and at the moment, the bolt 6 is positioned above the middle part of the waist-shaped hole 42, so that the top end of the top column 4 and the top end of the blank holder 1 are always positioned on the same plane in the process of drawing the plate by continuously moving the upper die and the blank holder 1 downwards, the plate is ensured not to be drawn and marked in the drawing forming process, and the quality of the automobile covering part is improved.
Claims (4)
1. An ejection mechanism of an automobile drawing die is characterized by comprising a blank holder, a limiting insert, an air cylinder, an ejection column, a connecting column and a bolt, wherein a bottom column is arranged at the bottom end of the blank holder at intervals, the limiting insert is fixedly arranged at the bottom end of the bottom column, an air cylinder mounting plate is arranged at the top end of the air cylinder, the air cylinder mounting plate is fixedly connected with the bottom end of the limiting insert, mutually communicated through holes are vertically formed in the blank holder and the bottom column in a corresponding mode, a first blind hole and a second blind hole are respectively formed in the upper end and the lower end of the middle of the limiting insert, the first blind hole is communicated with the second blind hole, the circle centers of the first blind hole, the second blind hole and the through hole are on the same vertical axis, the radius of the first blind hole is equal to that of the through hole, and the radius of the second blind hole is smaller than that, the top pillar is arranged in the through hole and the first blind hole, the outer wall of the top pillar is attached to the inner wall of the through hole and the inner wall of the first blind hole, the top end of the top column and the top end of the blank holder are positioned on the same plane, the bottom end of the top column is provided with a groove, the top of the connecting column is inserted into the groove, the bottom of the connecting column is positioned in the second blind hole, the top of the connecting column can slide up and down in the groove, the top of the connecting column is transversely provided with a pin hole, a waist-shaped hole is transversely formed at the bottom of the top column and communicated with the groove, the bolt is inserted in the pin hole and the waist-shaped hole, the bolt is positioned in the middle of the waist-shaped hole, the middle of the cylinder mounting plate is provided with an avoidance hole, the end part of a piston rod of the air cylinder sequentially penetrates through the avoidance hole, the second blind hole and the bottom end of the connecting column.
2. The ejection mechanism of the automobile drawing die as claimed in claim 1, wherein an external thread is arranged at the end of the piston rod of the air cylinder, a screw hole is arranged at the bottom end of the connecting column, an internal thread is arranged in the screw hole, and the end of the piston rod of the air cylinder is fixed in the screw hole through the external thread and the internal thread in a threaded manner.
3. The ejection mechanism of the automobile drawing die as claimed in claim 1, wherein the blank holder and the limiting insert are welded and fixed, and the limiting insert and the cylinder mounting plate are fixedly connected through a bolt.
4. The ejection mechanism of the automobile drawing die as claimed in claim 1, wherein the height of the waist-shaped hole is 7-9 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021459255.1U CN212664701U (en) | 2020-07-22 | 2020-07-22 | Ejection mechanism of automobile drawing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021459255.1U CN212664701U (en) | 2020-07-22 | 2020-07-22 | Ejection mechanism of automobile drawing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212664701U true CN212664701U (en) | 2021-03-09 |
Family
ID=74816702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021459255.1U Active CN212664701U (en) | 2020-07-22 | 2020-07-22 | Ejection mechanism of automobile drawing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212664701U (en) |
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2020
- 2020-07-22 CN CN202021459255.1U patent/CN212664701U/en active Active
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