CN211437974U - Riveting die for automobile riveting workpiece - Google Patents
Riveting die for automobile riveting workpiece Download PDFInfo
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- CN211437974U CN211437974U CN201922092248.6U CN201922092248U CN211437974U CN 211437974 U CN211437974 U CN 211437974U CN 201922092248 U CN201922092248 U CN 201922092248U CN 211437974 U CN211437974 U CN 211437974U
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Abstract
The utility model relates to a riveting die for automobile riveting workpieces, which comprises an upper die mechanism and a lower die mechanism, wherein the upper die mechanism comprises an upper die base, a hollow cavity arranged at the lower part of the upper die base and an upper fixing plate arranged at the bottom of the hollow cavity, a riveting punch head is arranged by passing through the upper fixing plate, the upper part of the riveting punch head is connected with a punching driving unit, and the riveting punch head has downward punching force under the action of the punching driving unit; the lower die mechanism comprises a lower die base and a lower die plate arranged on the upper part of the lower die base, a positioning pin is arranged on the upper part of the lower die plate and used for positioning a riveting workpiece to be processed, and a lower die insert matched with the riveting punch is further arranged on the lower die plate; and the upper die mechanism descends, and the riveting punch head is matched with the lower die insert block to rivet the riveting nut on the lower part of the workpiece to be riveted. Compared with the prior art, the die can effectively save the operation time, improve the production efficiency and obviously improve the product quality.
Description
Technical Field
The utility model relates to a mould, concretely relates to riveting die for car riveting work piece.
Background
There is a need for a clinch nut to be assembled to a stiffener assembly part for an automobile. The product riveting workpiece is made of CR2GI40/40-U material with the thickness of 1.2, the tensile strength of 270 plus 370N/mm2, the yield strength of 140 plus 240N/mm2, the elongation at break is more than or equal to 34 percent, and the product riveting workpiece is made of galvanized sheet and is softer. The riveting square nut material is 10B21, the thread load is 17200N, and the hardness is 200 and 302 HV; the nut has high requirements, so the process is relatively complex, and the specific processing process comprises the following steps: cold heading, tapping, heat treatment and electroplating. After the product is riveted, the product has a tighter functional test. Ftop is more than or equal to 1.4KN, and torque is more than or equal to 12.8 Nm; because the requirement of functional power is high, the riveting surface is a matching surface, the planeness is plus or minus 0.5, the verticality of the riveted nut and the bottom plate is 0.2, and most of the existing devices are difficult to meet the processing requirement based on the strict requirement.
The current riveting clamp is utilized for positioning, only one rivet can be riveted at a time, the air cylinder works very slowly, 10 seconds are needed for completing riveting at a time, only 1260 pieces can be produced under normal conditions of equipment and work within one shift, and production cannot be met. The existing riveting equipment is a combination of two actions of driving a main shaft to rotate by a motor and pressing a cylinder downwards, and when the existing riveting equipment is contacted with a workpiece, rolling action is generated on the workpiece, so that the rivet is riveted with the workpiece. The riveting power is mainly provided by the cylinder, and the cylinder power is related to the pressure of the air compressor; and the atmospheric pressure that the air compressor machine provided is invariable, can't quantify its pressure, can't manage and control during production. Therefore, the pressure is large and small, so that F top/torque is unstable after riveting, even the performance is over poor, and the product cannot be delivered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a riveting die for car riveting work piece in order to solve above-mentioned problem, can effectively save operating time, improve production efficiency, product quality is obviously improved.
The purpose of the utility model is realized through the following technical scheme:
a riveting die for automobile riveting workpieces comprises an upper die mechanism and a lower die mechanism, wherein the upper die mechanism comprises an upper die base, a hollow cavity arranged at the lower part of the upper die base, and an upper fixing plate provided with the bottom of the hollow cavity; the lower die mechanism comprises a lower die base and a lower die plate arranged on the upper part of the lower die base, a positioning pin is arranged on the upper part of the lower die plate and used for positioning a riveting workpiece to be processed, and a lower die insert matched with the riveting punch is further arranged on the lower die plate; the upper die mechanism descends, the riveting punch is matched with the lower die insert block, and the riveting nut is riveted on a riveting workpiece to be processed at the lower part.
Further, the punching driving unit is installed inside the hollow plate assembly and comprises a nitrogen spring and a striking plate, the upper portion of the riveting punch is connected to the striking plate, and the nitrogen spring is arranged on the upper portion of the striking plate.
Further, the riveting punch is provided with one or more groups, and the riveting punch is driven by independent punching driving units respectively.
Further, the hollow cavity is enclosed by a plurality of hollow plate assemblies.
Furthermore, a magnet is arranged in the riveting punch and used for adsorbing the riveting nut made of metal materials.
Further, a lower cushion plate is arranged between the lower die base and the lower die plate.
Further, the riveting nut is a square riveting nut.
Furthermore, guide post mechanisms are further arranged at four corners of the upper die mechanism and the lower die mechanism, and each guide post mechanism comprises a guide post, a guide sleeve and a buffer spring sleeved on the guide post.
Furthermore, a limiting rod is arranged between the upper die mechanism and the lower die mechanism.
Furthermore, the upper die mechanism is a punch press, the jacking force is more than or equal to 3KN, and the torque is more than or equal to 20 Nm.
When the riveting die is used specifically, the following steps are adopted:
(1) the riveting nut is placed in the riveting punch, the inside of the riveting punch is provided with the magnet, and the square riveting nut is automatically absorbed on the riveting punch.
(2) And placing the riveting workpiece in the lower template positioning pin.
(3) An operator presses a button, and the upper table surface of the upper die mechanism descends; when the riveting nut and the riveting workpiece are contacted in a descending mode, the upper die nitrogen spring acts on the striking plate and the riveting punch head to press the rivet on the workpiece, the upper die nitrogen spring increases force to act on the striking plate and the riveting punch head along with the continuous descending of the upper die mechanism, and the rivet punches holes on the workpiece.
(4) The upper die mechanism continues to move downwards, the lower die insert block and the rivet act together to extrude the punched workpiece part into the rivet, and therefore riveting is achieved.
(5) When the upper table surface of the upper die mechanism reaches a lower dead point, the upper die and the lower die are completely closed; and 3, leveling a riveted product, ensuring the planeness of a riveting surface and ensuring the verticality of the rivet. The planeness of the riveting surface is plus or minus 0.5, the verticality of the riveted nut and the bottom plate is 0.2, and all the requirements are met.
(6) Because the die is dead-stamped by the die feeding mechanism, all functional parameters of the riveted part are qualified after riveting; f top is more than or equal to 3KN, and torque is more than or equal to 20 Nm; completely meets the requirements that the popular Fcap is more than or equal to 1.4KN and the torque is more than or equal to 12.8 Nm.
Compared with the prior art, the utility model has the advantages of it is following:
1. can effectively save operating time, greatly improve production efficiency, compare and can only produce 1260 in equipment and the normal operating condition on one shift now, 5040 can be produced in equipment and the normal operating condition on one shift to the device.
2. Because of adopting new mould structure, product quality obviously improves: ftop is more than or equal to 1.4KN, and torque is more than or equal to 12.8 Nm; the verticality of the riveted nut and the bottom plate is less than 0.2 after riveting within plus or minus 0.5 of the flatness of riveting, and the riveted product completely meets the requirements of customers.
3. The labor and material resources can be effectively saved, the maintenance cost of the die is greatly reduced, and the workload of a master for maintaining the die is greatly reduced.
4. The production safety is greatly improved, the former production accidents often occur, a novel die structure is adopted, and the safety accidents are zero.
Drawings
Fig. 1 is a schematic view of the overall structure of a mold according to an embodiment of the present invention;
fig. 2 and 3 are schematic sectional structural diagrams of embodiments of the present invention;
fig. 4 is a schematic front view of the embodiment of the present invention;
fig. 5 is a schematic top view of an embodiment of the present invention;
FIG. 6 is a schematic structural view of a riveting workpiece according to an embodiment of the present invention;
in the figure: 1-an upper die holder, 2-a nitrogen spring, 3-a hollow cavity, 4-a striking plate, 5-a hollow plate, 6-an upper fixing plate, 7-a riveting workpiece, 8-a riveting punch, 9-a riveting nut, 10-a lower die plate, 11-a lower die insert, 12-a lower backing plate and 13-a lower die holder; 14-a guide post mechanism; 15-limiting rod.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
As shown in FIG. 6, the existing reinforcing plate assembly product on the popular B-MPV vehicle type is made of CR2GI40/40-U material with the thickness of 1.2, the tensile strength of 270 plus 370N/mm2, the yield strength of 140 plus 240N/mm2, the elongation at break is greater than or equal to 34%, and the material is galvanized plate, which is softer. The riveting square nut material is 10B21, the thread load is 17200N, and the hardness is 200 and 302 HV; the nut has high requirements, so the process is relatively complex, and the specific processing process comprises the following steps: cold heading, tapping, heat treatment and electroplating. After the product is riveted, the product has a relatively strict functional test, the F top is more than or equal to 1.4KN, and the torque is more than or equal to 12.8 Nm; because the requirement of functional power is high, the riveting surface is a matching surface, the planeness is plus or minus 0.5, the verticality of the riveted nut and the bottom plate is 0.2, and the existing device is difficult to meet the processing requirement based on the strict requirement.
As shown in fig. 2-5, the utility model provides a riveting die for car riveting work piece, including upper die mechanism and lower die mechanism, upper die mechanism includes upper die base 1, installs in cavity 3 of 1 lower part of upper die base, is equipped with the last solid board 6 of cavity 3 bottom, passes solid board 6 and is equipped with riveting drift 8, and punching press drive unit is connected on riveting drift 8 upper portion to have decurrent punching press power under punching press drive unit's effect. Riveting drift 8 is equipped with two sets ofly, is driven by independent punching press drive unit respectively, and punching press drive unit installs inside hollow plate subassembly, including nitrogen gas spring 2 and beater 4, 8 upper portions of riveting drift are connected on beater 4, and nitrogen gas spring 2 locates beater 4's upper portion, and nitrogen gas spring 2 that shows in the figure distributes about carrying out owing to spatial arrangement's needs. The lower die mechanism comprises a lower die base 13 and a lower die plate 10 arranged on the upper part of the lower die base 13, a positioning pin is arranged on the upper part of the lower die plate 10 and used for positioning a riveting workpiece to be processed, and a lower die insert 11 used for being matched with the riveting punch 8 is further arranged on the lower die plate 10; and the upper die mechanism descends, and the riveting punch 8 is matched with the lower die insert 11 to rivet the riveting nut 9 on the lower part of the workpiece 7 to be processed.
The hollow cavity 3 is defined by a plurality of hollow plates 5. And a magnet is arranged in the riveting punch 8 and is used for adsorbing a riveting nut 9 made of a metal material. A lower backing plate 12 is arranged between the lower die base 13 and the lower die plate 10. The riveting nut 9 is a square riveting nut 9. And guide post mechanisms are further arranged at four corners of the upper die mechanism and the lower die mechanism and comprise guide posts, guide sleeves and buffer springs sleeved on the guide posts. And a limiting rod is also arranged between the upper die mechanism and the lower die mechanism. The upper die mechanism is a punch press, the jacking force is more than or equal to 3KN, and the torque is more than or equal to 20 Nm.
The specific working principle and process are as follows:
(1) the riveting nut is placed in the riveting punch, the inside of the riveting punch is provided with the magnet, and the square riveting nut is automatically absorbed on the riveting punch.
(2) And placing the riveting workpiece in the lower template positioning pin.
(3) An operator presses a button, and the upper table surface of the upper die mechanism descends; when the riveting nut and the riveting workpiece are contacted in a descending mode, the upper die nitrogen spring acts on the striking plate and the riveting punch head to press the rivet on the workpiece, the upper die nitrogen spring increases force to act on the striking plate and the riveting punch head along with the continuous descending of the upper die mechanism, and the rivet punches holes on the workpiece.
(4) The upper die mechanism continues to move downwards, the lower die insert block and the rivet act together to extrude the punched workpiece part into the rivet, and therefore riveting is achieved.
(5) When the upper table surface of the upper die mechanism reaches a lower dead point, the upper die and the lower die are completely closed; and 3, leveling a riveted product, ensuring the planeness of a riveting surface and ensuring the verticality of the rivet. The planeness of the riveting surface is plus or minus 0.5, the verticality of the riveted nut and the bottom plate is 0.2, and all the requirements are met.
(6) Because the die is dead-stamped by the die feeding mechanism, all functional parameters of the riveted part are qualified after riveting; f top is more than or equal to 3KN, and torque is more than or equal to 20 Nm; completely meets the requirements that the popular Fcap is more than or equal to 1.4KN and the torque is more than or equal to 12.8 Nm.
The utility model discloses the mould has following advantage: the operation time can be effectively saved, the production efficiency is greatly improved, compared with the prior art that only 1260 pieces can be produced under the normal conditions of equipment and work, 5040 pieces can be produced under the normal conditions of equipment and work by the device; because of adopting new mould structure, product quality obviously improves: ftop is more than or equal to 1.4KN, and torque is more than or equal to 12.8 Nm; the riveting flatness is within plus or minus 0.5, the verticality of the riveted nut and the bottom plate is less than 0.2, and the riveted product completely meets the customer requirements; the maintenance cost of the die is greatly reduced, and the workload of a master maintaining the die is greatly reduced; the production safety is greatly improved, the former production accidents often occur, a novel die structure is adopted, and the safety accidents are zero.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. A riveting die for automobile riveting workpieces is characterized by comprising an upper die mechanism and a lower die mechanism,
the upper die mechanism comprises an upper die base (1), a hollow cavity (3) arranged at the lower part of the upper die base (1), and an upper fixing plate (6) provided with the bottom of the hollow cavity (3), wherein a riveting punch (8) penetrates through the upper fixing plate (6), the upper part of the riveting punch (8) is connected with a punching driving unit, and the riveting punch has downward punching force under the action of the punching driving unit;
the lower die mechanism comprises a lower die base (13) and a lower die plate (10) arranged on the upper portion of the lower die base (13), a positioning pin is arranged on the upper portion of the lower die plate (10) and used for positioning a riveting workpiece to be processed, and a lower die insert block (11) matched with the riveting punch head (8) is further arranged on the lower die plate (10);
the upper die mechanism descends, the riveting punch (8) is matched with the lower die insert block (11) to rivet the riveting nut (9) on the lower riveting workpiece (7) to be processed.
2. A riveting die for riveting workpieces of automobiles according to claim 1, wherein the punching driving unit is installed inside a hollow plate component and comprises a nitrogen spring (2) and a knock plate (4), the upper part of the riveting punch (8) is connected to the knock plate (4), and the nitrogen spring (2) is arranged on the upper part of the knock plate (4).
3. A riveting die for riveting workpieces for automobiles according to claim 2, wherein the riveting punches (8) are provided with one or more sets, and the riveting punches (8) are respectively driven by independent punch driving units.
4. A riveting die for riveting workpieces for automobiles according to claim 1, wherein the hollow cavity (3) is surrounded by an assembly of hollow plates (5).
5. A riveting die for riveting workpieces of automobiles according to claim 1, wherein a magnet is arranged in the riveting punch (8) for adsorbing the riveting nut (9) made of metal.
6. The riveting die for riveting workpieces of automobiles according to claim 1, wherein a lower backing plate (12) is arranged between the lower die holder (13) and the lower die plate (10).
7. Riveting die for automotive riveting workpieces according to claim 1, characterized in that the riveting nut (9) is a square riveting nut (9).
8. The riveting die for automobile riveting workpieces as recited in claim 1, wherein guide post mechanisms are further arranged at four corners of the upper die mechanism and the lower die mechanism, and each guide post mechanism comprises a guide post, a guide sleeve and a buffer spring sleeved on the guide post.
9. The riveting die for the automobile riveting workpiece according to claim 1, wherein a limiting rod is further arranged between the upper die mechanism and the lower die mechanism.
10. The riveting die for the automobile riveting workpiece as defined in claim 1, wherein the upper die mechanism is a punch press, the jacking force is not less than 3KN, and the torque is not less than 20 Nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922092248.6U CN211437974U (en) | 2019-11-28 | 2019-11-28 | Riveting die for automobile riveting workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922092248.6U CN211437974U (en) | 2019-11-28 | 2019-11-28 | Riveting die for automobile riveting workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN211437974U true CN211437974U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922092248.6U Active CN211437974U (en) | 2019-11-28 | 2019-11-28 | Riveting die for automobile riveting workpiece |
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| Country | Link |
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| CN (1) | CN211437974U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788272A (en) * | 2019-11-28 | 2020-02-14 | 奥林汽车零部件（常熟）有限公司 | Riveting die for automobile riveting workpiece |
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2019
- 2019-11-28 CN CN201922092248.6U patent/CN211437974U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788272A (en) * | 2019-11-28 | 2020-02-14 | 奥林汽车零部件（常熟）有限公司 | Riveting die for automobile riveting workpiece |
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