阅读说明：本技术 一种热铆模具 (Hot riveting die ) 是由 王永和 黄微益 程战战 于 2019-09-20 设计创作，主要内容包括：本发明公开一种热铆模具,包括：下固定板；模具下模,模具下模设于下固定板上,模具下模用于放置热塑产品；上模板,上模板活动设于下固定板的正上方；若干预压机构,若干预压机构均与上模板的底部固定连接,若干预压机构用于压紧热塑产品；若干热铆凸模,若干热铆凸模均与上模板的底部固定连接,若干热铆凸模用于对热塑产品上的若干铆点进行热铆接；若干吹气装置,若干吹气装置均与上模板的底部固定连接,若干吹气装置用于对热铆接后的热塑产品上的若干铆点进行吹气,使若干铆点快速降温。本发明提高产品生产效率,降低生产运行成本,低压生产使用更安全。(The invention discloses a hot riveting die, which comprises: a lower fixing plate; the lower die is arranged on the lower fixing plate and used for placing a thermoplastic product; the upper template is movably arranged right above the lower fixing plate; if the prepressing mechanisms are arranged in the pressing mechanisms, the prepressing mechanisms are all fixedly connected with the bottom of the upper template, and the prepressing mechanisms are used for pressing thermoplastic products; the hot riveting male dies are all fixedly connected with the bottom of the upper die plate and are used for hot riveting a plurality of riveting points on a thermoplastic product; the plurality of air blowing devices are fixedly connected with the bottom of the upper template and are used for blowing air to a plurality of riveting points on the hot-riveted thermoplastic product so as to quickly cool the riveting points. The invention improves the production efficiency of products, reduces the production and operation cost and ensures safer low-pressure production and use.)

1. A hot-riveting die, comprising:

a lower fixing plate;

the lower die is arranged on the lower fixing plate and used for placing a thermoplastic product;

the upper template is movably arranged right above the lower fixing plate;

if the prepressing mechanisms are arranged, the prepressing mechanisms are all fixedly connected with the bottom of the upper template, and the prepressing mechanisms are used for pressing the thermoplastic product;

the hot riveting male dies are all fixedly connected with the bottom of the upper template and are used for hot riveting a plurality of riveting points on the thermoplastic product;

the blowing devices are fixedly connected with the bottom of the upper template and used for blowing air to the riveting points on the thermoplastic product subjected to hot riveting, so that the riveting points are quickly cooled.

2. The hot riveting die of claim 1, further comprising: and the electric control system is in signal connection with the hot riveting male die and is used for monitoring and adjusting the temperature of the lower end of the hot riveting male die in real time.

3. The hot riveting die of claim 2, wherein each male hot riveting die comprises: the upper end of the first fixed seat is fixedly connected with the bottom of the upper template;

the upper end of the second guide shaft is movably connected with the lower end of the first fixed seat;

the first compression spring is sleeved on the periphery of the second guide shaft, and two ends of the first compression spring are abutted between the first fixed seat and the second guide shaft;

the upper end of the male die is fixedly connected with the lower end of the second guide shaft through a heat insulation plate;

the heating pipe is arranged in the convex die, the electric control system is in signal connection with the heating pipe, and the heating pipe is used for adjusting the temperature of the convex die.

4. The hot riveting die of claim 1, wherein each pre-pressing mechanism comprises:

the upper end of the second fixed seat is fixedly connected with the bottom of the upper template;

the upper end of the third guide shaft is movably connected with the second fixed seat;

the pre-pressing head is fixedly connected with the lower end of the third guide shaft;

and the second compression spring is sleeved on the third guide shaft, and two ends of the second compression spring are abutted between the second fixing seat and the pre-pressing head.

5. The hot riveting die of claim 1, further comprising: at least one cushioning mechanism, each said cushioning mechanism comprising:

the oil buffer is arranged at the bottom of the upper template;

the buffer limiting column is arranged on the lower fixing plate and is opposite to the oil buffer, and the buffer limiting column is in limiting fit with the oil buffer.

6. The hot riveting die of claim 1, further comprising: at least one stop gear, each stop gear all includes:

the upper limiting column is arranged at the bottom of the upper template;

the lower limiting column is arranged on the lower fixing plate, the upper limiting column is opposite to the lower limiting column, and the upper limiting column is in limiting fit with the lower limiting column.

7. The hot riveting die of claim 1, further comprising: at least two guiding mechanisms, each guiding mechanism all includes:

the lower end of the first guide shaft is fixedly connected with the lower fixing plate;

the linear bearing is arranged on the upper template and is in sliding connection with the first guide shaft.

8. The hot riveting die of claim 1, wherein each blowing device comprises: the upper end of the copper pipe is fixedly connected with the bottom of the upper template, and the lower end of the copper pipe faces the riveting point.

9. The hot riveting die of claim 8, further comprising: the manifold block is fixedly connected with the bottom of the upper template, the upper end of the copper pipe is fixedly connected with the manifold block, a channel is formed in the manifold block, and the copper pipe is communicated with the channel.

10. The hot riveting die of claim 1, further comprising:

the upper fixing plate is fixedly connected with the top of the upper template through a plurality of connecting columns;

and the main cylinder is in transmission connection with the upper fixing plate.

Technical Field

The invention relates to the technical field of production of thermoplastic parts in automobiles, in particular to a hot riveting die.

Background

Automobile tail lights, turn lights and the like are main components of an automobile light signal system and are one of the guarantees of safe driving of an automobile.

Disclosure of Invention

The hot riveting die is simple in structure, convenient to operate, energy-saving in production, capable of improving production efficiency, reducing production and operation costs, and safer in low-pressure production and use.

The specific technical scheme is as follows:

a hot-riveting die comprising:

a lower fixing plate;

the lower die is arranged on the lower fixing plate and used for placing a thermoplastic product;

the upper template is movably arranged right above the lower fixing plate;

if the prepressing mechanisms are arranged, the prepressing mechanisms are all fixedly connected with the bottom of the upper template, and the prepressing mechanisms are used for pressing the thermoplastic product;

the hot riveting male dies are all fixedly connected with the bottom of the upper template and are used for hot riveting a plurality of riveting points on the thermoplastic product;

the blowing devices are fixedly connected with the bottom of the upper template and used for blowing air to the riveting points on the thermoplastic product subjected to hot riveting, so that the riveting points are quickly cooled.

The hot riveting mold further comprises: and the electric control system is in signal connection with the hot riveting male die and is used for monitoring and adjusting the temperature of the lower end of the hot riveting male die in real time.

The hot riveting die described above, wherein each of the hot riveting male dies comprises:

the upper end of the first fixed seat is fixedly connected with the bottom of the upper template;

the upper end of the second guide shaft is movably connected with the lower end of the first fixed seat;

the first compression spring is sleeved on the periphery of the second guide shaft, and two ends of the first compression spring are abutted between the first fixed seat and the second guide shaft;

the upper end of the male die is fixedly connected with the lower end of the second guide shaft through a heat insulation plate;

the heating pipe is arranged in the convex die, the electric control system is in signal connection with the heating pipe, and the heating pipe is used for adjusting the temperature of the convex die.

The hot riveting die described above, wherein each of said pre-pressing mechanisms comprises:

the upper end of the second fixed seat is fixedly connected with the bottom of the upper template;

the upper end of the third guide shaft is movably connected with the second fixed seat;

the pre-pressing head is fixedly connected with the lower end of the third guide shaft;

and the second compression spring is sleeved on the third guide shaft, and two ends of the second compression spring are abutted between the second fixing seat and the pre-pressing head.

The hot riveting mold further comprises: at least one cushioning mechanism, each said cushioning mechanism comprising:

the oil buffer is arranged at the bottom of the upper template;

the buffer limiting column is arranged on the lower fixing plate and is opposite to the oil buffer, and the buffer limiting column is in limiting fit with the oil buffer.

The hot riveting mold further comprises: at least one stop gear, each stop gear all includes:

the upper limiting column is arranged at the bottom of the upper template;

the lower limiting column is arranged on the lower fixing plate, the upper limiting column is opposite to the lower limiting column, and the upper limiting column is in limiting fit with the lower limiting column.

The hot riveting mold further comprises: at least two guiding mechanisms, each guiding mechanism all includes:

the lower end of the first guide shaft is fixedly connected with the lower fixing plate;

the linear bearing is arranged on the upper template and is in sliding connection with the first guide shaft.

The hot riveting mold described above, wherein each of the blowing devices comprises: the upper end of the copper pipe is fixedly connected with the bottom of the upper template, and the lower end of the copper pipe faces the riveting point.

The hot riveting mold further comprises: the manifold block is fixedly connected with the bottom of the upper template, the upper end of the copper pipe is fixedly connected with the manifold block, a channel is formed in the manifold block, and the copper pipe is communicated with the channel.

The hot riveting mold further comprises:

the upper fixing plate is fixedly connected with the top of the upper template through a plurality of connecting columns;

and the main cylinder is in transmission connection with the upper fixing plate.

Compared with the prior art, the technical scheme has the positive effects that:

according to the invention, the direct-current 48V heating pipe with a thermocouple four-wire is adopted to directly heat the male die, the temperature near the riveting point is monitored in real time, the accurate control of a single riveting point is realized, and the male die can be heated to a higher temperature during actual work, so that the riveting column is rapidly heated and softened, and thus the hot riveting forming under a lower pressure is realized. The whole mechanism is flexible, the height balance among different riveting points is automatically adjusted through the first compression spring, the situation that the riveting head is bent due to overlarge pressure is avoided, the structure is matched with the blowing device, the rapid temperature rise and the rapid temperature reduction can be realized, and the situations of wire drawing and riveting point sticking are avoided. The invention has simple structure, convenient operation, energy-saving production, improved production efficiency of products, reduced production and operation cost and safer low-pressure production and use.

Drawings

FIG. 1 is a schematic view of an overall structure of a hot riveting mold according to the present invention;

FIG. 2 is a schematic structural view of a hot riveting male die in the hot riveting die according to the invention;

FIG. 3 is a schematic structural view of a pre-pressing mechanism in a hot riveting mold according to the present invention;

in the drawings: 1. a lower fixing plate; 2. a lower die of the die; 3. mounting a template; 4. a pre-pressing mechanism; 5. hot riveting a male die; 6. a blowing device; 7. a first fixed seat; 8. a second guide shaft; 9. a first compression spring; 10. a male die; 11. heating a tube; 12. a heat insulation plate; 13. a second fixed seat; 14. a third guide shaft; 15. pre-pressing a head; 16. a second compression spring; 17. a buffer mechanism; 18. a hydraulic shock absorber; 19. a bumper position-limiting post; 20. a limiting mechanism; 21. an upper limiting column; 22. a lower restraint post; 23. a first guide shaft; 24. a linear bearing; 25. a manifold block; 26. an upper fixing plate; 27. connecting columns; 28. a thermoplastic product.

Detailed Description

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

Fig. 1 is a schematic overall structure diagram of a hot riveting die of the present invention, fig. 2 is a schematic structural diagram of a male hot riveting die of the present invention, fig. 3 is a schematic structural diagram of a pre-pressing mechanism of the hot riveting die of the present invention, and as shown in fig. 1 to 3, a hot riveting die of a preferred embodiment is shown, including: the hot riveting die comprises a lower fixing plate 1, a lower die 2, an upper die plate 3, a plurality of prepressing mechanisms 4 and a plurality of hot riveting male dies 5, wherein the lower die 2 is arranged on the lower fixing plate 1, the lower die 2 is used for placing a thermoplastic product 28, the upper die plate 3 is movably arranged right above the lower fixing plate 1, if the prepressing mechanisms 4 are fixedly connected with the bottom of the upper die plate 3, the prepressing mechanisms 4 are used for compressing the thermoplastic product 28, the hot riveting male dies 5 are fixedly connected with the bottom of the upper die plate 3, and the hot riveting male dies 5 are used for hot riveting a plurality of riveting points on the thermoplastic product 28.

Further, as a preferred embodiment, the hot riveting mold further includes: the plurality of air blowing devices 6 are fixedly connected with the bottom of the upper template 3, and the plurality of air blowing devices 6 are used for blowing air to a plurality of riveting points on the hot-riveted thermoplastic product 28 so as to rapidly cool the plurality of riveting points.

Further, as a preferred embodiment, the hot riveting mold further includes: and the electric control system is in signal connection with the hot riveting male die 5 and is used for monitoring and adjusting the temperature of the lower end of the hot riveting male die 5 in real time.

Further, as a preferred embodiment, each male hot riveting die 5 comprises: first fixing base 7, second guiding axle 8, first compression spring 9, terrace die 10 and heating pipe 11, the upper end of first fixing base 7 and the bottom fixed connection of cope match-plate pattern 3, the upper end of second guiding axle 8 and the lower extreme swing joint of first fixing base 7, first compression spring 9 cover is located on the periphery of second guiding axle 8, the both ends of first compression spring 9 are supported and are located between first fixing base 7 and the second guiding axle 8, the lower extreme fixed connection of heat insulating board 12 and second guiding axle 8 is passed through to the upper end of terrace die 10, heating pipe 11 is located in terrace die 10, electrical system and heating pipe 11 signal connection, heating pipe 11 is used for adjusting the temperature of terrace die 10. Preferably, the height balance among different riveting points is automatically adjusted through the first compression spring 9, so that the situation that the riveting head is bent due to overlarge pressure is avoided,

further, as a preferred embodiment, each of the pre-pressing mechanisms 4 includes: second fixing base 13, third guiding axle 14, pre-compaction head 15 and second compression spring 16, the upper end of second fixing base 13 and the bottom fixed connection of cope match-plate pattern 3, the upper end and the second fixing base 13 swing joint of third guiding axle 14, the lower extreme fixed connection of pre-compaction head 15 and third guiding axle 14, second compression spring 16 cover is located on third guiding axle 14, the both ends of second compression spring 16 are supported and are located between second fixing base 13 and pre-compaction head 15. Preferably, the second compression spring 16 can prevent the product from being crushed.

The above are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.

The present invention also has the following embodiments in addition to the above:

in a further embodiment of the present invention, with continued reference to fig. 1 to 3, the hot riveting mold further includes: at least one buffer mechanism 17, each buffer mechanism 17 comprising: the hydraulic buffer 18 and the buffer limit column 19, the hydraulic buffer 18 is arranged at the bottom of the upper template 3, the buffer limit column 19 is arranged on the lower fixing plate 1, the buffer limit column 19 is opposite to the hydraulic buffer 18, and the buffer limit column 19 is in limit fit with the hydraulic buffer 18. Preferably, the cushioning mechanism 17 can reduce the risk of damage to the product.

In a further embodiment of the present invention, the hot riveting die further comprises: at least one stop gear 20, each stop gear 20 includes: go up spacing post 21 and lower spacing post 22, go up spacing post 21 and locate the bottom of cope match-plate pattern 3, on lower fixed plate 1 was located to lower spacing post 21, go up spacing post 21 and lower spacing post 22 just right mutually, go up spacing post 21 and the spacing cooperation of lower spacing post 22.

Preferably, a two-stage limiting structure is adopted, firstly, the buffering mechanism 17 is adopted for buffering, product riveting point bending caused by overlarge impact force of the main cylinder is reduced, and then final limiting is realized through the limiting mechanism 20.

In a further embodiment of the present invention, the hot riveting die further comprises: at least two guiding mechanism, each guiding mechanism all includes: the lower end of the first guide shaft 23 is fixedly connected with the lower fixing plate 1, the linear bearing 24 is arranged on the upper template 3, and the linear bearing 24 is connected with the first guide shaft 23 in a sliding manner. Preferably, the stabilization and guiding action of the upper mold plate 3 during its movement can be improved.

In a further embodiment of the invention, each blowing device 6 comprises: the upper end of the copper pipe is fixedly connected with the bottom of the upper template 3, and the lower end of the copper pipe faces towards the riveting point.

In a further embodiment of the present invention, the hot riveting die further comprises: manifold block 25, manifold block 25 and the bottom fixed connection of cope match-plate pattern 3, the upper end and the manifold block 25 fixed connection of copper pipe, be formed with the passageway in the manifold block 25, the copper pipe is linked together with the passageway.

In a further embodiment of the present invention, the hot riveting die further comprises: the upper fixing plate 26 is fixedly connected with the top of the upper template 3 through a plurality of connecting columns 27, and the main cylinder is in transmission connection with the upper fixing plate 26.

Preferably, the hot riveting die further comprises: and the electromagnetic valve and the air blowing pipe blow air into the channel of the manifold block through the electromagnetic valve and the air blowing pipe.

Preferably, the electronic control system comprises: a temperature controller, a low-voltage power supply and the like.

Preferably, the lower fixing plate 1 is fixed on the machine table.

The method of use of the invention is illustrated below:

step S1: the upper die plate 3, a plurality of prepressing mechanisms 4 at the bottom of the upper die plate 3 and a plurality of hot riveting male dies 5 are driven by the main cylinder to be pressed downwards;

step S2: the impact of the depression of the master cylinder is buffered by the buffer mechanism 17;

step S3: driving the pressing intervening mechanism 4 to press the LED circuit board to be attached to the product mounting bracket, pressing down the hot riveting male dies 5, contacting riveting points of the product, and starting hot riveting;

step S4: until the limiting mechanism 20 limits, the main cylinder stops pressing;

step S5: when the hot riveting is close to the end, the copper pipe blows air to the riveting point, so that the temperature is rapidly reduced.

According to the invention, the direct-current 48V heating pipe 11 with a thermocouple four-wire is adopted to directly heat the male die 10, the temperature near the riveting point is monitored in real time, the accurate control of a single riveting point is realized, and the male die 10 can be heated to a higher temperature during actual work, so that the riveting column is rapidly heated and softened, and thus the hot riveting forming under a smaller pressure is realized.

The whole mechanism is flexible, the height balance among different riveting points is automatically adjusted through the first compression spring 9, the situation that the riveting head is bent due to overlarge pressure is avoided, the structure is matched with the blowing device, the rapid temperature rise and the rapid temperature reduction can be realized, and the situations of wire drawing and riveting point sticking are avoided.

The invention has simple structure, convenient operation, energy-saving production, improved production efficiency of products, reduced production and operation cost and safer low-pressure production and use.

The novel hot riveting die is better in hot riveting quality, lower in energy consumption and simpler and more convenient to debug.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.