CN112872137A

CN112872137A - Buckling and bending forming device for upper cross beam of automobile seat

Info

Publication number: CN112872137A
Application number: CN202110021408.7A
Authority: CN
Inventors: 李兴运; 杨灿元
Original assignee: Shenzhen Shumamou Automobile Technology Co ltd; Shenzhen Yihe Precision Technology Group Co ltd
Current assignee: Shenzhen Shumamou Automobile Technology Co ltd; Shenzhen Yihe Precision Technology Group Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-06-01
Anticipated expiration: 2041-01-08
Also published as: CN112872137B

Abstract

The invention relates to an inner buckle bending forming device for an upper beam of an automobile seat, which comprises an upper fixed die holder, a lower fixed die holder and a forming assembly, wherein the upper fixed die holder and the lower fixed die holder are vertically arranged oppositely, and the upper fixed die holder is vertically displaced relative to the lower fixed die holder; the forming assembly is located between the upper fixing die holder and the lower fixing die holder and comprises a first forming assembly, a second forming assembly and a third forming assembly, the second forming assembly is displaced in the vertical direction relative to the lower fixing die holder, the first forming assembly is displaced in the vertical direction relative to the second forming assembly, the third forming assembly is displaced in the horizontal direction relative to the second forming assembly, and the forming device is combined with a plurality of forming blocks, so that a part pressing process can be completed in a one-step forming process, the production efficiency of the die is improved, the forming effect of the product is guaranteed, and the problem that the existing die cannot realize one-step forming of a product inner buckle bending process is solved.

Description

Buckling and bending forming device for upper cross beam of automobile seat

Technical Field

The invention relates to the technical field of automobile molds, in particular to an inner buckle bending and forming device for an upper beam of an automobile seat.

Background

The automobile is a tool for daily travel, various odd-shaped and strange metal stamping parts are often utilized in the automobile manufacturing process, the shapes of the parts are special so as to improve the assembly strength of the whole automobile and improve the safety performance, particularly, the parts on an automobile seat are basically complex and various, a plurality of inner buckles and bends are usually required to be made around the parts, but the inner buckles and the bends are often required to be bent, the parts can only be completed in one step through a single process in the manufacturing process of dies of a plurality of stamping manufacturers, the parts are stripped by using an inclined sliding block under the condition of space limitation, the dimensional precision of the parts cannot meet the requirements of an automobile main engine factory, the production efficiency is extremely low and unstable, the requirements of customers cannot be met at all, the supply delay is led, the quality of the customers is complained, and the like, because the parts in the aspect of the automobile seat have extremely high requirements on the dimensional precision of products, it is currently a necessary and compelling problem for the entire automobile manufacturing industry to address such parts.

Chinese patent document CN208195391U discloses a stamping continuous die for reinforcing plates of car seats, which includes: the continuous die comprises an upper die base, an upper die screw, a punch, an upper base plate, a fixing plate, a discharging base plate, a discharging plate, a male die plate, an ejector rod, a female die plate, a female die base plate, a material guide column, a lower die screw, a lower supporting plate, a lower supporting pin, a lower die base, an outer guide sleeve, a limiting column, a forming punch, a material guide block, an outer guide column and a female die.

Chinese patent document CN208929025U discloses a flanging die for large back plate of car seat, including upper die base and die holder, the lower surface of upper die base is equipped with the pressure strip, the upper surface of die holder is equipped with the bearing plate, the top of bearing plate is equipped with the die cavity, on the bearing plate and around the die cavity be equipped with a plurality of guide block, the guide block includes the base, direction core and sliding block, open the both sides of direction core has the chute that slides, the chute that slides is close to the die cavity by the direction of top to bottom gradually, the sliding block is opened there is the chamber of sliding, the intracavity that slides is equipped with the inclined rail that slides, be located the die cavity and can dismantle on the sliding block of one side and be connected with the layering. The flanging die for the large back plate of the automobile seat has the advantages that the force borne by the flanging of the automobile seat is reduced, the phenomenon that the large back plate of the automobile seat generates indentation or bending transition due to overlarge pressure during flanging is reduced, and accordingly the yield of the large back plate of the automobile seat is improved.

Disclosure of Invention

Aiming at the problems in the prior art, the invention discloses an automobile seat upper beam inner buckle bending forming device, which utilizes a plurality of forming blocks to be combined with each other, realizes the part pressing process in the one-step forming process, improves the production efficiency of a die, ensures the product forming effect, and solves the problem that the existing die can not realize the one-step forming of the product inner buckle bending process.

The technical scheme adopted by the invention for solving the technical problems is as follows: the inner buckle bending forming device comprises an upper fixed die holder, a lower fixed die holder and a forming assembly, wherein the upper fixed die holder and the lower fixed die holder are vertically arranged oppositely, and the upper fixed die holder vertically displaces relative to the lower fixed die holder; the forming assembly is positioned between the upper fixed die holder and the lower fixed die holder and comprises a first forming assembly, a second forming assembly and a third forming assembly, the second forming assembly is displaced in the vertical direction relative to the lower fixed die holder, the first forming assembly is displaced in the vertical direction relative to the second forming assembly, and the third forming assembly is displaced in the horizontal direction relative to the second forming assembly;

the first forming assembly comprises at least one first forming block and a plurality of groups of first ejector blocks, the first forming block is fixedly connected to the lower surface of the upper fixing die holder through a connecting screw, the first ejector blocks are located on the side of the first forming block, and the first ejector blocks are fixedly connected to the lower surface of the upper fixing die holder through connecting screws;

the second forming assembly comprises a lifting fixing seat, a plurality of second forming blocks, a plurality of groups of second jacking blocks and a plurality of groups of first jacking cylinders, the lifting fixing seat is arranged above the lower fixed die holder in parallel, the plurality of groups of first jacking cylinders are arranged between the lifting fixing seat and the lower fixed die holder side by side, a cylinder body of each first jacking cylinder is fixedly arranged on the lower fixed die holder, and the end part of a piston column of each first jacking cylinder is fixedly connected to the lower surface of the lifting fixing seat; the lifting fixing seat is provided with a first forming installation surface, and the second forming block is fixedly connected to the first forming installation surface of the lifting fixing seat through a connecting screw; the second ejector blocks are fixedly arranged on the upper surface of the lifting fixing seat by adopting connecting screws, the number of the second ejector blocks is equal to that of the first ejector blocks, and the position right above each second ejector block corresponds to one first ejector block;

the third forming assembly comprises a third forming block, a fourth forming block and a sliding block fixing seat, a second forming installation surface is arranged on the sliding block fixing seat, the second forming installation surface is fixedly connected with the fourth forming block, a third forming installation surface is arranged on the fourth forming block, the third forming block is located on the third forming installation surface, and the third forming block is displaced in the vertical direction relative to the fourth forming block.

Furthermore, still including connecting longeron and connecting the crossbeam in the second forming subassembly, connect the longeron and be located the side of lift fixing base, just connect the longeron and adopt three groups to connect crossbeam fixed connection between the crossbeam.

Furthermore, a plurality of groups of first guide assemblies are arranged between the lifting fixing seat and the lower fixing die holder side by side, each first guide assembly comprises a first guide column and a first guide shaft sleeve, one part of each first guide column extends into the lifting fixing seat, a fixing shaft collar is arranged at the position, which is flush with the lower surface of the lifting fixing seat, of each first guide column, and each first guide column is fixedly installed on the lower surface of the lifting fixing seat through two groups of fixing blocks, and each fixing shaft collar is tightly pressed on the corresponding first guide column; the lower fixing die holder is provided with a first guide hole, the first guide shaft sleeve is coaxially installed in the first guide hole of the lower fixing die holder, and the first guide shaft sleeve is installed on the lower fixing die holder through two groups of fixing blocks.

Furthermore, a plurality of groups of first limiting assemblies are arranged between the lifting fixing seat and the lower fixing die holder, the first limiting assemblies are used for limiting the lifting fixing seat to ascend at a limiting position, each first limiting assembly comprises a first limiting column and a first limiting hole, the lower end of each first limiting column is connected to the lower fixing die holder in a threaded mode, and the upper end of each first limiting column is provided with a first limiting collar; the first limiting hole is positioned on the lifting fixing seat and comprises a first guide part and a first limiting part, the diameter of the first guide part is smaller than that of the first limiting part, a first limiting boss is arranged at the joint position of the first guide part and the first limiting part, the first guide part is coaxially sleeved on the first limiting column, and the first limiting collar axially moves up and down in the first limiting part; the upper surface of lower fixed die holder is equipped with the first stopper of multiunit, first stopper is used for restricting the extreme position that the lift fixing base descends.

Furthermore, the lower surface of a sliding block fixing seat in the third forming assembly is fixedly connected with a plurality of guide sliding blocks, two sides of each guide sliding block are respectively provided with a limiting sliding plate, the limiting sliding plates are fixedly connected to the lower fixing die holder, and the displacement direction of the guide sliding blocks is limited by the limiting sliding plates; the horizontal driving air cylinder is horizontally placed inside the sliding block fixing seat, the cylinder body of the horizontal driving air cylinder is fixedly connected with the sliding block fixing seat, and the end part of the piston rod of the horizontal driving air cylinder is fixedly connected to the lower fixing die seat.

Furthermore, the driving block assembly comprises a movable driving block and a fixed driving block, the lower surface of the upper fixed die holder is fixedly connected with a plurality of driving fixing seats, the driving fixing seats are provided with driving mounting surfaces and product pressing surfaces, the driving mounting surfaces and the product pressing surfaces are of an L-shaped structure, the driving mounting surfaces of each driving fixing seat are fixedly connected with a group of movable driving blocks, the lower ends of the movable driving blocks are provided with first driving inclined surfaces, the side surfaces of the movable driving blocks are provided with first sliding surfaces, and the first sliding surfaces are parallel to the moving direction of the movable driving blocks; the fixed driving block is fixedly connected with the sliding block fixing seat, a second driving inclined plane is arranged at the upper end of the fixed driving block, and a second sliding plane is arranged on the side face of the fixed driving block; the first driving inclined surface and the second driving inclined surface are parallel to each other, and the first sliding surface and the second sliding surface are parallel to each other.

Furthermore, the two ends of the slider fixing seat are provided with guide pressing plates, the two end faces of the slider fixing seat are provided with extending parts, the guide pressing plates are installed on the lower fixing die holder through connecting screws, a guide sliding groove is formed between each guide pressing plate and the corresponding lower fixing die holder, and the extending parts are connected in the guide sliding grooves in a sliding mode.

Furthermore, a plurality of groups of second guide assemblies, a plurality of groups of second limiting assemblies and a plurality of groups of second jacking cylinders are arranged on a second forming installation surface on the sliding block fixing seat, the second guide assemblies are used for limiting the horizontal displacement of the third forming block, the second limiting assemblies are used for limiting the limit position of the upward movement of the third forming block, and the second jacking cylinders are used for driving the vertical displacement of the third forming block; the cylinder body of the second jacking cylinder is fixedly arranged on the second forming installation surface of the sliding block fixing seat, and the piston rod of the second jacking cylinder penetrates through the fourth forming block and is connected to the bottom surface of the third forming block; the second guide assembly comprises a second guide post and a second guide shaft sleeve, the second guide shaft sleeve is fixed on the fourth forming block, one end of the second guide post is fixedly connected to the bottom surface of the third forming block, and the other end of the second guide post downwards penetrates through the second guide shaft sleeve and extends to the sliding block fixing seat; the second limiting assembly comprises a second limiting column and a second limiting hole, the lower end of the second limiting column is in threaded connection with a third forming installation surface of a fourth forming block, and the upper end of the second limiting column is provided with a second limiting collar; the second limiting hole is located on the third forming block and comprises a second guide part and a second limiting part, the diameter of the second guide part is smaller than that of the second limiting part, a second limiting shaft boss is arranged at the joint position of the second guide part and the second limiting part, and the second guide part is sleeved on the second limiting column.

Furthermore, a plurality of groups of first positioning pins are arranged on a second forming block in the second forming assembly, and first positioning pin holes with the positions consistent with those of the first positioning pins are arranged on the first forming block; a plurality of groups of second positioning pins are arranged on a connecting longitudinal beam in the second molding assembly, the lower surface of the upper fixing die holder is fixedly connected with a driving fixing seat, and a second positioning pin hole with the same position as the second positioning pins is arranged on the driving fixing seat; and a group of third positioning pins are respectively arranged on the connecting beam in the second molding assembly, and the upper fixing die holder is provided with third positioning pin holes consistent with the third positioning pins in position.

Furthermore, a first detection baffle is arranged on the sliding block fixing seat, a first sensor is arranged in the vertical direction of the first detection baffle, and the first sensor is used for detecting the displacement distance of the first detection baffle; and second sensors are arranged at two ends of the connecting beam in the second forming assembly and used for detecting the distance between the second forming assembly and the upper fixing die holder.

Compared with the prior art, the invention has the following advantages:

1) the forming device adopts a transfer die structure, and realizes the part pressing process in the one-step forming process by mutually combining the first forming block, the second forming block, the third forming block and the fourth forming block so as to replace the traditional single-process die structure, realize the rapid pressing process, improve the die production efficiency and ensure the product forming effect; in addition, the forming device is simple to operate and convenient to assemble and disassemble in the charging and discharging process, and the production efficiency is further improved.

2) According to the forming device, the parallel sliding block structure is adopted for forming components to replace the traditional angle forming structure, so that batch forming of the same die can be realized in the forming process, and the product and the die are completely separated in the material returning process, so that the material returning is smoother; and in the pressing process of each forming block, the movement direction and the movement distance of each forming block are limited by the limiting column structure, so that the forming blocks cannot generate redundant stroke displacement after being formed in place, and the quality of final formed products is ensured.

3) The forming device can perform buckling and bending on the product by driving each forming block to sequentially displace, and the forming blocks are matched with the sliding block structures after the bending is completed, so that the forming blocks completely exit the bending position of the product, and the interference of the product and a mold is avoided, and the material returning process is not influenced.

Drawings

FIG. 1 is a structural diagram of an upper cross beam inner buckle bending and forming device of an automobile seat in an embodiment of the invention;

FIG. 2 is a view showing an installation structure of a part of the molding assembly and the lower fixing mold base according to the embodiment of the present invention;

FIG. 3 is a view showing an installation structure of a part of the molding assembly and the upper fixing mold base according to the embodiment of the present invention;

FIG. 4 is a block diagram of a molding assembly in an embodiment of the invention;

FIG. 5 is a schematic structural view of a third molding assembly in an embodiment of the present invention;

FIG. 6 is a side cross-sectional block diagram of a third molding assembly in an embodiment of the present invention;

FIG. 7 is a schematic structural view of a second molding assembly in an embodiment of the present invention;

FIG. 8 is a side cross-sectional block diagram of a second molding assembly in an embodiment of the present invention;

FIG. 9 is a top view of a second molding assembly in an embodiment of the present invention;

FIG. 10 is a block diagram of a cross member of a vehicle seat in accordance with an embodiment of the present invention;

FIG. 11 is a schematic structural view of a charging stage of the molding apparatus according to the embodiment of the present invention;

FIG. 12 is a schematic diagram of a first stage of a forming apparatus in a pressing stage according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of the second stage of the pressing stage of the forming apparatus in accordance with the embodiment of the present invention;

FIG. 14 is a schematic view of a first molding member and a second molding member after compression in accordance with an embodiment of the present invention;

FIG. 15 is a schematic diagram of a third molding assembly of an embodiment of the present invention after compaction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example (b):

with reference to fig. 1 to 4, the embodiment discloses an inner buckle bending forming device for an upper beam of an automobile seat, which includes an upper fixing die holder ii, a lower fixing die holder iii and a forming assembly i, wherein the upper fixing die holder ii and the lower fixing die holder iii are vertically arranged oppositely, and the upper fixing die holder ii vertically displaces relative to the lower fixing die holder iii; and the forming assembly I is positioned between the upper fixed die holder II and the lower fixed die holder III and is used for performing press forming on a product. Specifically, the molding assembly I comprises a first molding assembly, a second molding assembly 1 and a third molding assembly 2, the second molding assembly 1 is displaced in the vertical direction relative to the lower fixing die holder III, the first molding assembly is displaced in the vertical direction relative to the second molding assembly 1, and the third molding assembly 2 is displaced in the horizontal direction relative to the second molding assembly 1.

Referring to fig. 3, the first molding assembly includes at least one first molding block 5 and a first ejector block 6, the first molding block 5 is fixedly connected to the lower surface of the upper fixing die holder ii by a connecting screw, the first ejector block 6 is located on the side of the first molding block 5, and the first ejector block 6 is fixedly connected to the lower surface of the upper fixing die holder ii by a connecting screw.

Referring to fig. 7-9, the second molding assembly 1 includes a lifting fixing seat 101, a plurality of second molding blocks 102, a plurality of second ejecting blocks 105, and a plurality of first ejecting cylinders 108, the lifting fixing seat 101 is disposed above the lower fixing mold seat iii in parallel, a plurality of first ejecting cylinders 108 are disposed between the lifting fixing seat 101 and the lower fixing mold seat iii in parallel, a cylinder body of the first ejecting cylinder 108 is fixedly mounted on the lower fixing mold seat iii, and a piston column end of the first ejecting cylinder 108 is fixedly connected to a lower surface of the lifting fixing seat 101; a first forming installation surface 1011 is arranged on the lifting fixed seat 101, and the second forming block 102 is fixedly connected to the first forming installation surface 1011 of the lifting fixed seat 101 through a connecting screw; the second ejector blocks 105 are fixedly installed on the upper surface of the lifting fixing seat 101 through connecting screws, the number of the second ejector blocks 105 is equal to that of the first ejector blocks 6, and the first ejector blocks 6 correspond to the second ejector blocks 105 directly above the second ejector blocks.

In addition, the second forming assembly 1 further comprises a connecting longitudinal beam 103 and a connecting cross beam 104, the connecting longitudinal beam 103 is located on the side of the lifting fixing seat 101, and the connecting longitudinal beam 103 and the connecting cross beam 104 are fixedly connected through three groups of connecting cross beams 104.

More specifically, a plurality of groups of first guide assemblies are arranged between the lifting fixed seat 101 and the lower fixed die holder iii side by side, each first guide assembly comprises a first guide column 113 and a first guide shaft sleeve 114, a part of the first guide column 113 extends into the lifting fixed seat 101, a fixed shaft collar is arranged at a position of the first guide column 113, which is flush with the lower surface of the lifting fixed seat 101, and the first guide column 113 is fixedly mounted on the lower surface of the lifting fixed seat 101 by pressing and fastening the fixed shaft collar through two groups of fixed blocks 115; and a first guide hole is formed in the lower fixed die holder III, the first guide shaft sleeve 114 is coaxially installed in the first guide hole of the lower fixed die holder III, and the first guide shaft sleeve 114 is installed on the lower fixed die holder III through two groups of fixed blocks 115. In the process of displacement of the lifting fixing seat 101, the stability of the vertical linear displacement process of the lifting fixing seat 101 is higher through the cooperation of the first guide column 113 and the first guide shaft sleeve 114, and the movement load capacity is enhanced.

Furthermore, a plurality of groups of first limiting assemblies are further arranged between the lifting fixing seat 101 and the lower fixing die holder III, and the first limiting assemblies are used for limiting the lifting fixing seat 101 to ascend at a limiting position. The first limiting component comprises a first limiting column 106 and a first limiting hole 1012, the lower end of the first limiting column 106 is connected to the lower fixed die holder III in a threaded manner, and the upper end of the first limiting column 106 is provided with a first limiting collar 1061; the first limiting hole 1012 is located on the lifting fixing seat 101, the first limiting hole 1012 includes a first guiding portion 1012b and a first limiting portion 1012a, the diameter of the first guiding portion 1012b is smaller than that of the first limiting portion 1012a, a first limiting boss 1012c is disposed at a joint position of the first guiding portion 1012b and the first limiting portion 1012a, the first guiding portion 1012b is coaxially sleeved on the first limiting post 106, and the first limiting collar 1061 axially moves up and down in the first limiting portion 1012 a. The upper surface of the lower fixing die holder III is also provided with a plurality of groups of first limiting blocks 107, and the first limiting blocks 107 are used for limiting the limit positions of the lifting fixing base 101 in descending. The limit position of the upward movement of the lifting fixing seat 101 can be limited by the first limit component, the limit position of the downward movement of the lifting fixing seat 101 can be limited by the first limit component 107, the vertical displacement distance of the lifting fixing seat 101 can be ensured to be within a safe displacement range by the aid of the first limit component and the first limit component 107, and the lifting fixing seat 101 is prevented from being damaged due to the fact that the movement distance is too large.

In more detail, referring to fig. 5 to 6, the third molding assembly 2 includes a third molding block 201, a fourth molding block 202, and a slider holder 203, a second molding mounting surface 2031 is disposed on the slider holder 203, the fourth molding block 202 is fixedly connected to the second molding mounting surface 2031, a third molding mounting surface 2021 is disposed on the fourth molding block 202, the third molding block 201 is disposed on the third molding mounting surface 2021, and the third molding block 201 is vertically displaced with respect to the fourth molding block 202.

Furthermore, a plurality of guide sliders 213 are fixedly connected to the lower surface of the slider fixing seat 203 in the third molding assembly 2, and two sides of each guide slider 213 are respectively provided with a limiting sliding plate 214, the limiting sliding plates 214 are fixedly connected to the lower fixing mold seat iii, and the displacement direction of the guide sliders 213 is limited by the limiting sliding plates 214, so that the movement direction of the slider fixing seat 203 connected with the guide sliders 213 is limited, and the slider fixing seat 203 is ensured to perform linear displacement in the horizontal direction all the time. In order to keep the slider fixing seat 203 to linearly reciprocate, a plurality of groups of transverse driving cylinders 212 and a plurality of groups of driving block assemblies are arranged on the slider fixing seat 203, the transverse driving cylinders 212 are horizontally placed inside the slider fixing seat 203, the cylinder body of each transverse driving cylinder 212 is fixedly connected with the slider fixing seat 203, and the end part of the piston rod of each transverse driving cylinder is fixedly connected to the lower fixing die holder III; the driving block assembly comprises a movable driving block 8 and a fixed driving block 206, the lower surface of the upper fixed die holder II is fixedly connected with a plurality of driving fixing seats 3, each driving fixing seat 3 is provided with a driving mounting surface 302 and a product pressing surface 301, the driving mounting surfaces 302 and the product pressing surfaces 301 are of an L-shaped structure, the driving mounting surface 302 of each driving fixing seat 3 is fixedly connected with a group of movable driving blocks 8, the lower ends of the movable driving blocks 8 are provided with first driving inclined surfaces 801, the side surfaces of the movable driving blocks 8 are provided with first sliding surfaces 802, and the first sliding surfaces 802 are parallel to the movement direction of the movable driving blocks 8; the fixed driving block 206 is fixedly connected with the slider fixing seat 203, the upper end of the fixed driving block 206 is provided with a second driving inclined surface 2062, and the side surface of the fixed driving block 206 is provided with a second sliding surface 2061; the first driving ramp 801 and the second driving ramp 2062 are parallel to each other, and the first sliding surface 802 and the second sliding surface 2061 are parallel to each other.

It is foreseeable that the slider fixing seat 203 can keep the horizontal direction to reset through the transverse driving cylinder 212 and the driving block assembly, and the specific motion process is as follows: when the upper fixed die holder II is pressed downwards, the movable driving block 8 is driven to move downwards, the first driving inclined surface 801 drives the fixed driving block 206 and the sliding block fixing seat 203 to linearly displace along the horizontal direction by applying pressure to the second driving inclined surface 2062, so that the third forming block 201 and the fourth forming block 202 connected to the sliding block fixing seat 203 are driven to horizontally displace, and when the first sliding surface 802 contacts with the second sliding surface 2061, the sliding block fixing seat 203 reaches the displacement limit position; when the upper fixed die holder II is lifted and reset, the movable driving block 8 moves upwards, at the moment, the movable driving block 8 cannot limit the movement of the fixed driving block 206, and the piston rod in the transverse driving cylinder 212 is used for ejecting, so that the sliding block fixing seat 203 is driven to linearly displace along the horizontal reverse direction, and the resetting of the sliding block fixing seat 203 is completed. In order to ensure that the sliding fixing block 115 only moves in the horizontal direction during the movement, the two ends of the slider fixing seat 203 are provided with the guide pressing plates 205, the two end faces of the slider fixing seat 203 are provided with the extending portions 2031, the guide pressing plates 205 are mounted on the lower fixing die holder iii through the connecting screws, a guide sliding groove is formed between the guide pressing plates 205 and the lower fixing die holder iii, and the extending portions 2031 are slidably connected in the guide sliding groove, so that the movement of the slider fixing seat 203 is limited in the vertical direction and only the sliding in the horizontal direction is kept.

More specifically, the third forming block 201 and the fourth forming block 202 slide vertically, the bottom of the fourth forming block 202 is tightly attached to the second forming installation surface 2031 on the slider fixing seat 203, in order to avoid the displacement of the fourth forming block 202 in the horizontal direction, a plurality of positioning blocks 211 are fixedly connected to the second forming installation surface 2031 of the slider fixing seat 203 by using connecting screws, positioning grooves with the same number and corresponding positions as the positioning blocks 211 are arranged on the bottom surface of the fourth forming block 202, and the positioning blocks 211 are embedded in the positioning grooves to limit the displacement of the fourth forming block 202 in the horizontal direction; a plurality of groups of second guide assemblies 209, a plurality of groups of second limit assemblies and a plurality of groups of second jacking cylinders 210 are arranged on a second forming mounting surface 2031 of the sliding block fixing seat 203, the second guide assemblies 209 are used for limiting the horizontal displacement of the third forming block 201, the second limit assemblies are used for limiting the limit position of the third forming block 201 moving upwards, and the second jacking cylinders 210 are used for driving the vertical displacement of the third forming block 201.

In more detail, the cylinder body of the second jacking cylinder 210 is fixedly mounted on the second forming mounting surface 2031 of the slider fixing seat 203, a cylinder body through hole is formed in the fourth forming block 202, and the piston rod of the second jacking cylinder 210 penetrates through the cylinder body through hole of the fourth forming block 202 and is connected to the bottom surface of the third forming block 201; the second guiding assembly 209 includes a second guiding column 2091 and a second guiding shaft sleeve 2092, guide holes are respectively formed in the fourth forming block 202 and the sliding block fixing seat 203, the second guiding shaft sleeve 2092 is fixed in the guide hole formed in the fourth forming block 202, one end of the second guiding column 2091 is fixedly connected to the bottom surface of the third forming block 201, and the other end of the second guiding column 2091 downwardly penetrates through the second guiding shaft sleeve 2092 and extends into the guide hole of the sliding block fixing seat 203; the second limiting assembly comprises a second limiting column 207 and a second limiting hole 208, the lower end of the second limiting column 207 is connected to the third forming installation surface 2021 of the fourth forming block 202 in a threaded manner, and the upper end of the second limiting column 207 is provided with a second limiting collar 2071; the second limiting hole 208 is located on the third forming block 201, the second limiting hole 208 comprises a second guide part and a second limiting part, the diameter of the second guide part is smaller than that of the second limiting part, a second limiting pillow block is arranged at the joint position of the second guide part and the second limiting part, the second guide part is sleeved on the second limiting column 207, and the second limiting collar 2071 axially moves up and down in the second limiting part.

When the second jacking cylinder 210 is pushed out, the third forming block 201 is driven to ascend, the second guide component 209 ensures that the third forming block 201 runs stably in the ascending process, and when the second jacking cylinder 210 continues to drive the third forming block 201 to ascend until the second limiting collar 2071 on the second guide post 2091 contacts with the second limiting boss in the second limiting hole 208, the third forming block 201 ascends to the limit position; when the third forming block 201 needs to be lowered, the piston rod of the second jacking cylinder 210 retracts to drive the third forming block 201 to be lowered until the bottom surface of the third forming block 201 contacts the third forming installation surface 2021 of the fourth forming block 202.

Furthermore, a plurality of groups of first material pressing blocks 4 are arranged on the lower surface of the upper fixing die holder II, the first material pressing blocks 4 are fixedly connected to the upper fixing die holder II through connecting screws, a group of first material pressing blocks 4 correspond to the upper parts of two ends of the third forming block 201 respectively, and the first material pressing blocks 4 are used for compressing and fixing the end part of the third forming block 201; and a second material pressing block 7 is also arranged between the two groups of first material pressing blocks 4. When the upper fixing die holder II moves downwards to be pressed, the lower surfaces of the first material pressing block 4 and the second material pressing block 7 are tightly attached to the end part of the third forming block 201, and the first material pressing block 4 and the second material pressing block 7 respectively apply downward pressing force to the end part of the third forming block 201 to ensure that the third forming block 201 has no displacement in the vertical direction.

In addition, in order to ensure that each forming block is accurately positioned in the pressing process, the device is further provided with a plurality of positioning pin structures, in this embodiment, a plurality of groups of first positioning pins 110 are arranged on the second forming block 102 in the second forming assembly 1, and correspondingly, the first forming block 5 is provided with first positioning pin holes having the same positions as the first positioning pins 110. A plurality of groups of second positioning pins 111 are arranged on the connecting longitudinal beam 103 in the second forming assembly 1, and second positioning pin holes with the same positions as the second positioning pins 111 are arranged on the product pressing surface 301 on the driving fixing seat 3. And a group of third positioning pins 109 are respectively arranged on the connecting beam 104 in the second molding assembly 1, and a third positioning pin hole with the same position as the third positioning pin 109 is arranged on the upper fixing die holder II. Through the matching and positioning of the positioning pins and the positioning pin holes, the situation that the quality of pressed products is reduced due to dislocation of each forming block in the pressing process can be avoided.

Meanwhile, in this embodiment, in order to accurately control the displacement distance between the forming blocks in the pressing process, the slider fixing seat 203 is provided with a first detection baffle 216, a first sensor 217 is arranged in the vertical direction of the first detection baffle 216, and the first sensor 217 is used for detecting the displacement distance of the first detection baffle 216, so as to detect the displacement distance of the slider fixing seat 203; and second sensors 112 are arranged at two ends of the connecting beam 104 in the second molding assembly 1, and the second sensors 112 are used for detecting the distance between the second molding assembly 1 and the upper fixing die holder II.

Specifically, the device in this embodiment is used for bending an upper cross beam of an automobile seat, referring to fig. 10, the upper cross beam iv of the automobile seat is provided with an inner buckle bend 9, the inner buckle bend 9 is formed by the first forming block 5, the second forming block 102, the third forming block 201, and the fourth forming block 202 in the device in this embodiment by a matched pressing process, and the specific pressing process is as follows:

a charging stage:

referring to fig. 11, firstly, the apparatus keeps the mold open, at this time, the upper fixed mold base ii and the first molding assembly move to the upper limit position, the piston rod of the transverse driving cylinder 212 in the third molding assembly 2 extends, the slider fixing base 203 in the third molding assembly 2 moves to the limit position in the direction away from the piston rod movement direction of the transverse driving cylinder 212, the piston rod of the second jacking cylinder 210 extends to drive the third molding block 201 to rise to the limit position, that is, the second limit pillow block of the third molding block 201 contacts with the second limit collar 2071 of the second limit column 207; the piston rod of the first jacking cylinder 108 in the second molding assembly 1 extends out to drive the lifting fixing seat 101 and the second molding assembly 1 to ascend to the limit position, that is, the first limit pillow block of the lifting fixing seat 101 contacts with the first limit collar 1061 of the first limit column 106. The operator now places the product to be pressed on the second forming assembly 1, supporting it by means of the second forming block 102 and the connecting stringer 103.

And (3) a pressing stage:

stage one: referring to fig. 12, at this time, the upper fixed die holder ii and the first forming assembly start to move downward, the movable driving block 8 connected to the upper fixed die holder ii moves downward synchronously, when the first driving inclined surface 801 of the movable driving block 8 contacts with the second driving inclined surface 2062 of the fixed driving block 206, the driving slider fixing seat 203 starts to displace, and simultaneously the third forming block 201 and the fourth forming block 202 fixedly connected to the slider fixing seat 203 will move synchronously to the inner buckle bending 9 position of the upper cross beam of the car seat, when the first sliding surface 802 of the movable driving block 8 contacts with the second sliding surface 2061 of the fixed driving block 206, the third forming block 201 contacts with the surface of the product to be pressed, and at this time, the first forming block 5, the second forming block 102 and the third forming block 201 fix the product to be pressed in the horizontal direction.

And a second stage: referring to fig. 13, at this stage, the upper fixed die holder ii and the first forming assembly continue to move downward, and at this time, the slide block fixing seat 203, the third forming block 201 and the fourth forming block 202 are kept stationary in the horizontal direction due to the parallel contact between the first sliding surface 802 of the movable driving block 8 and the second sliding surface 2061 of the fixed driving block 206; when the first forming block 5 and the third forming block 201 start to contact, a distance of about 10mm is kept between the first forming block 5 and the second forming block 102, and the first forming block 5, the second forming block 102 and the third forming block 201 compact a product to be pressed; after that, the first forming block 5 and the third forming block 201 continue to move downwards synchronously, and when the first top block 6 and the second top block 105 contact each other, the first forming block 5 and the second forming block 102 are pressed against each other.

And a third stage: referring to fig. 14 to 15, the upper fixed die holder ii and the first forming assembly continue to be pressed downward, and simultaneously the second forming assembly 1 starts to synchronously displace downward, the third forming assembly 2 in the third forming assembly 2 synchronously and continuously displaces downward by about 15mm, the products to be pressed and pressed in the first forming block 5, the second forming block 102 and the third forming block 201 synchronously displace downward, when the bottom of the third forming block 201 contacts with the third forming installation surface 2021 of the fourth forming block 202, the upper fixed die holder ii, the first forming assembly, the second forming assembly 1 and the third forming block 201 of the third forming assembly 2 finish being pressed downward, at this stage, the product to be pressed is bent by the fourth forming block 202 during the continuous downward movement of the product to be pressed, and when the displacement of the product to be pressed is finished, the product bending is finished.

A material returning stage:

after pressing is completed, the upper fixing die holder II and the first forming assembly move upwards to positions of a charging stage, the third forming block 201 in the second forming assembly 1 and the third forming assembly 2 synchronously move upwards, when the second forming assembly 1 moves upwards for 15mm, the second forming assembly stops moving, the third forming block 201 continues moving upwards for 10mm and then stops, at the moment, a piston rod of the transverse driving cylinder 212 in the sliding block fixing seat 203 stretches out, the sliding block fixing seat 203 in the third forming assembly 2 moves to a limit position in a direction opposite to the movement direction of the piston rod of the transverse driving cylinder 212, an operator takes down a pressed product, the pressed product is replaced by other products to be pressed, and the pressing process is repeated.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The inner buckle bending forming device for the upper beam of the automobile seat comprises an upper fixing die holder, a lower fixing die holder and a forming assembly, wherein the upper fixing die holder and the lower fixing die holder are vertically arranged oppositely, and the upper fixing die holder is vertically displaced relative to the lower fixing die holder; the forming assembly is positioned between the upper fixed die holder and the lower fixed die holder and is characterized in that: the molding assembly comprises a first molding assembly, a second molding assembly and a third molding assembly, the second molding assembly is displaced in the vertical direction relative to the lower fixed die holder, the first molding assembly is displaced in the vertical direction relative to the second molding assembly, and the third molding assembly is displaced in the horizontal direction relative to the second molding assembly;

2. The molding apparatus as defined in claim 1, wherein: still including connecting longeron and connecting the crossbeam among the second forming assembly, connect the longeron and be located the side of lift fixing base, just connect the longeron and adopt three groups between the crossbeam to connect crossbeam fixed connection.

3. The molding apparatus as defined in claim 1, wherein: a plurality of groups of first guide assemblies are arranged between the lifting fixing seat and the lower fixing die holder side by side, each first guide assembly comprises a first guide column and a first guide shaft sleeve, one part of each first guide column extends into the lifting fixing seat, a fixing shaft collar is arranged at the position, flush with the lower surface of the lifting fixing seat, of each first guide column, and the first guide columns are fixedly mounted on the lower surface of the lifting fixing seat through two groups of fixing blocks; the lower fixing die holder is provided with a first guide hole, the first guide shaft sleeve is coaxially installed in the first guide hole of the lower fixing die holder, and the first guide shaft sleeve is installed on the lower fixing die holder through two groups of fixing blocks.

4. The molding apparatus as defined in claim 1, wherein: a plurality of groups of first limiting assemblies are arranged between the lifting fixing seat and the lower fixing die holder, the first limiting assemblies are used for limiting the lifting fixing seat to ascend at a limiting position, each first limiting assembly comprises a first limiting column and a first limiting hole, the lower end of each first limiting column is connected to the lower fixing die holder in a threaded mode, and the upper end of each first limiting column is provided with a first limiting collar; the first limiting hole is positioned on the lifting fixing seat and comprises a first guide part and a first limiting part, the diameter of the first guide part is smaller than that of the first limiting part, a first limiting boss is arranged at the joint position of the first guide part and the first limiting part, the first guide part is coaxially sleeved on the first limiting column, and the first limiting collar axially moves up and down in the first limiting part; the upper surface of lower fixed die holder is equipped with the first stopper of multiunit, first stopper is used for restricting the extreme position that the lift fixing base descends.

5. The molding apparatus as defined in claim 1, wherein: the lower surface of a sliding block fixing seat in the third forming assembly is fixedly connected with a plurality of guide sliding blocks, two sides of each guide sliding block are respectively provided with a limiting sliding plate, the limiting sliding plates are fixedly connected to a lower fixing die holder, and the displacement direction of the guide sliding blocks is limited by the limiting sliding plates; the horizontal driving air cylinder is horizontally placed inside the sliding block fixing seat, the cylinder body of the horizontal driving air cylinder is fixedly connected with the sliding block fixing seat, and the end part of the piston rod of the horizontal driving air cylinder is fixedly connected to the lower fixing die seat.

6. The molding apparatus as defined in claim 5, wherein: the driving block assembly comprises a movable driving block and a fixed driving block, the lower surface of the upper fixed die holder is fixedly connected with a plurality of driving fixing seats, driving mounting surfaces and product pressing surfaces are arranged on the driving fixing seats, the driving mounting surfaces and the product pressing surfaces are of an L-shaped structure, a group of movable driving blocks are fixedly connected to the driving mounting surface of each driving fixing seat, a first driving inclined surface is arranged at the lower end of each movable driving block, a first sliding surface is arranged on the side surface of each movable driving block, and the first sliding surface is parallel to the moving direction of the movable driving block; the fixed driving block is fixedly connected with the sliding block fixing seat, a second driving inclined plane is arranged at the upper end of the fixed driving block, and a second sliding plane is arranged on the side face of the fixed driving block; the first driving inclined surface and the second driving inclined surface are parallel to each other, and the first sliding surface and the second sliding surface are parallel to each other.

7. The molding apparatus as defined in claim 1, wherein: the slide block fixing seat is characterized in that guide pressing plates are arranged at two ends of the slide block fixing seat, extending portions are arranged on two end faces of the slide block fixing seat, the guide pressing plates are installed on the lower fixing die seat through connecting screws, a guide sliding groove is formed between the guide pressing plates and the lower fixing die seat, and the extending portions are connected in the guide sliding groove in a sliding mode.

8. The molding apparatus as defined in claim 1, wherein: a plurality of groups of second guide assemblies, a plurality of groups of second limiting assemblies and a plurality of groups of second jacking cylinders are arranged on a second forming mounting surface on the sliding block fixing seat, the second guide assemblies are used for limiting the horizontal displacement of the third forming block, the second limiting assemblies are used for limiting the limit position of the upward movement of the third forming block, and the second jacking cylinders are used for driving the vertical displacement of the third forming block; the cylinder body of the second jacking cylinder is fixedly arranged on the second forming installation surface of the sliding block fixing seat, and the piston rod of the second jacking cylinder penetrates through the fourth forming block and is connected to the bottom surface of the third forming block; the second guide assembly comprises a second guide post and a second guide shaft sleeve, the second guide shaft sleeve is fixed on the fourth forming block, one end of the second guide post is fixedly connected to the bottom surface of the third forming block, and the other end of the second guide post downwards penetrates through the second guide shaft sleeve and extends to the sliding block fixing seat; the second limiting assembly comprises a second limiting column and a second limiting hole, the lower end of the second limiting column is in threaded connection with a third forming installation surface of a fourth forming block, and the upper end of the second limiting column is provided with a second limiting collar; the second limiting hole is located on the third forming block and comprises a second guide part and a second limiting part, the diameter of the second guide part is smaller than that of the second limiting part, a second limiting shaft boss is arranged at the joint position of the second guide part and the second limiting part, and the second guide part is sleeved on the second limiting column.

9. The molding apparatus as defined in claim 2, wherein: a plurality of groups of first positioning pins are arranged on a second forming block in the second forming assembly, and first positioning pin holes with the positions consistent with those of the first positioning pins are arranged on the first forming block; a plurality of groups of second positioning pins are arranged on a connecting longitudinal beam in the second molding assembly, the lower surface of the upper fixing die holder is fixedly connected with a driving fixing seat, and a second positioning pin hole with the same position as the second positioning pins is arranged on the driving fixing seat; and a group of third positioning pins are respectively arranged on the connecting beam in the second molding assembly, and the upper fixing die holder is provided with third positioning pin holes consistent with the third positioning pins in position.

10. The molding apparatus as defined in claim 2, wherein: a first detection baffle is arranged on the sliding block fixing seat, a first sensor is arranged in the vertical direction of the first detection baffle, and the first sensor is used for detecting the displacement distance of the first detection baffle; and second sensors are arranged at two ends of the connecting beam in the second forming assembly and used for detecting the distance between the second forming assembly and the upper fixing die holder.