CN217941763U - Automatic lead positive riveting die - Google Patents

Abstract

The utility model discloses an automatic lead positive riveting die, it includes first last mould assembly, mould assembly on the second, first lower mould assembly, second lower mould assembly, first slotting tool, the second slotting tool, press material piece and riveting drift, the reference column, the sheetmetal locating piece, the location briquetting, the equipment locating component, riveting locating component, the position of second work piece wherein is injectd to sheetmetal locating piece and reference column, the location briquetting is injectd the position of first work piece with the equipment locating component, riveting locating component presss from both sides tight first work piece when equipment locating component releases first work piece, the elasticity stroke between mould assembly on first last mould assembly and the second is not less than the material stroke of riveting drift on first work piece. The riveting die can be positioned firstly and then riveted in the riveting process, and the placing and riveting processes of each workpiece respectively adopt respective standards, so that the automatic placing process of the product and the qualified riveting size are ensured.

Description

Automatic lead positive riveting die

Technical Field

The utility model relates to an automatic lead positive riveting die.

Background

The riveting process is a common assembly process for mechanically combining at least two parts by using a rivet, generally adopts a riveting die to generate preset deformation of the rivet through mechanical pressure so as to generate a riveting effect, and the core of the riveting die is a riveting punch, a riveting female die and a product positioning structure. Generally, a positioning structure for guiding a product to be placed is consistent with a riveting size benchmark, but under some special conditions, the positioning benchmark for placing the product is inconsistent with the riveting size benchmark, so that the product can be correctly placed and the size is qualified, and the riveting size benchmark is required to be adopted for positioning in the riveting process.

Disclosure of Invention

The utility model aims at providing an automatic of accomplishing shaping and riveting a plurality of steps is led and is just riveted mould to fix a position and a punching press with riveting size benchmark.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an automatic pilot riveting die is used for riveting a plurality of workpieces and comprises an upper die part and a lower die part, wherein the upper die part comprises a first upper die assembly, a second upper die assembly which can slide up and down and is suspended below the first upper die assembly, an elastic piece which is connected between the first upper die assembly and the second upper die assembly and enables the first upper die assembly and the second upper die assembly to have a distance elastic stroke in an open die state, the lower die part comprises a first lower die assembly, a second lower die assembly which can slide up and down and is arranged above the first lower die assembly, an elastic piece which is connected between the first lower die assembly and the second lower die assembly and enables the first lower die assembly and the second lower die assembly to have a distance elastic stroke in an open die state, the upper die part further comprises a first plug cutter and a second plug cutter which are arranged in a cavity of the second upper die assembly, and a material pressing block which is arranged in the first upper die assembly and penetrates through the second upper die assembly and a riveting punch; the lower die part further comprises a positioning column, a metal sheet positioning block, a positioning pressing block, an assembling positioning assembly and a riveting positioning assembly which are arranged on the second lower die assembly, the position of the second workpiece is limited by the metal sheet positioning block and the positioning column, the position of the first workpiece is limited by the positioning pressing block and the assembling positioning assembly, the first workpiece is clamped by the riveting positioning assembly when the assembling positioning assembly releases the first workpiece, and the elastic stroke between the first upper die assembly and the second upper die assembly is not smaller than the pressing stroke of the riveting punch on the first workpiece.

Preferably, the lower die part comprises a riveting female die which is arranged on the first lower die assembly and penetrates through the second lower die assembly and is located right below the riveting punch, when the riveting punch finishes pressing, the riveting female die extrudes and deforms a third workpiece and fixedly connects the second workpiece and the first workpiece, and the elastic stroke between the first lower die assembly and the second lower die assembly is not smaller than the stroke of the riveting female die for extruding and deforming the third workpiece.

Preferably, the assembly positioning assembly comprises assembly positioning blocks which are symmetrically arranged on the second lower die assembly and can slide along the left-right direction, and a first spring which enables the two assembly positioning blocks to always have opposite movement trends.

Preferably, the riveting positioning assembly comprises two riveting positioning blocks which are symmetrically arranged on the second lower die assembly and can slide along the left and right directions, and a second spring which enables the two riveting positioning blocks to always move back to back.

Preferably, the first slotting tool and the assembly positioning blocks are provided with matched wedge surfaces, and when the first slotting tool contacts with the assembly positioning blocks and moves downwards, the two assembly positioning blocks move backwards.

Preferably, the second slotting tool and the riveting positioning block are provided with matched wedge-shaped surfaces, and when the second slotting tool is in contact with the riveting positioning block and moves downwards, the two riveting positioning blocks move oppositely.

Optimized, offer on the rear end portion of the up end of second lower mould subassembly and dodge the hole of dodging of first work piece downwardly extending's part, go up the mould portion still including the swing briquetting, make the swing briquetting has throughout and compresses tightly the briquetting spring on dodging the downthehole wall with first work piece, the swing briquetting rotate connect in go up the mould subassembly on the second and around the axis swing that the left and right directions extended.

Preferably, the first upper die assembly comprises an upper die base, an upper base plate and an upper clamping plate which are fixedly connected from top to bottom in sequence; the second upper die assembly comprises an upper stripping base plate and an upper stripping plate which are fixedly connected from top to bottom in sequence.

Preferably, the first lower die assembly comprises a lower die base, a lower backing plate and a lower clamping plate which are fixedly connected from bottom to top in sequence; the second lower die assembly comprises a lower die plate base plate and a lower die plate which are fixedly connected from bottom to top in sequence.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the riveting die can be positioned firstly and then riveted in the riveting process, and the placing and riveting processes of each workpiece respectively adopt respective standards, so that the automatic placing process of the product and the qualified riveting size are ensured.

Drawings

FIG. 1 is a schematic view of a riveting die in an open state;

FIG. 2 is a schematic view showing a state in which a riveting die is closed;

FIG. 3 is a schematic view of the general structure of the upper mold part;

FIG. 4 is a schematic view of the internal structure of the upper mold part I;

FIG. 5 is a second schematic view of the internal structure of the upper mold part;

FIG. 6 is a schematic view of the overall structure of the lower mold part;

FIG. 7 is a schematic view of a portion of the parts in the closed position;

FIG. 8 is a partial schematic view of the lower die section;

FIG. 9 is a schematic view of the assembly positioning components;

FIG. 10 is a schematic view of a riveting punch, a female die and a product in the process of closing the die;

FIG. 11 is a schematic view of a rivet locating block.

In the above drawings: 1. a mold feeding section; 1-1, an upper die base; 1-2, arranging a base plate; 1-3, an upper splint; 1-4, putting a stripping base plate; 1-5, removing the plate; 1-6, guide posts; 1-7, a limit column; 1-8, a first slotting tool; 1-9, a second slotting tool; 1-10, swinging a pressing block; 1-11, a rotating shaft; 1-12, pressing block spring; 1-13, pressing blocks; 1-14, riveting a punch; 2. a lower mold part; 2-1, a lower die holder; 2-2, a lower backing plate; 2-3, a lower splint; 2-4, a lower template backing plate; 2-5, a lower template; 2-6, a pin; 2-7, positioning a pressing block; 2-8, assembling a positioning block; 2-9, riveting a positioning block; 2-10, metal sheet positioning blocks; 2-11, a first spring; 2-12, riveting a female die; 2-13, positioning columns; 2-14, a second spring; 3-1, a bending piece; 3-2, metal sheets; 3-3, and riveting.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

Referring to the attached drawings 1-3 and 6, the automatic guide riveting die mainly comprises an upper die part 1 and a lower die part 2, the upper die part comprises an upper die holder 1-1, an upper backing plate 1-2, an upper clamping plate 1-3, an upper stripper backing plate 1-4, an upper stripper plate 1-5, a limiting column 1-7, a first slotting tool 1-8, a second slotting tool 1-9, a swinging pressing block assembly, a pressing block 1-13 and a riveting punch 1-14 in sequence from top to bottom, the upper die holder 1-1, the upper backing plate 1-2 and the upper clamping plate 1-3 are fixedly installed together to form a first upper die assembly, the upper stripper backing plate 1-4 and the upper stripper plate 1-5 are fixedly installed together to form a second upper die assembly, the alignment relation between the upper die assembly and the upper stripper plate 1-4 is ensured through guide pillars 1-6, springs are installed, a distance elastic stroke is ensured between the upper clamping plate 1-3 and the upper stripper backing plate 1-4 in a die opening state, the limiting column 1-7, the first slotting tool 1-8, the second slotting tool 1-9, the upper stripper plate backing plate 1-4 is provided with a spring, a pressing block is installed in the swinging pressing block assembly, a side 12, and a swinging pressing block is installed in the swinging pressing block assembly, and a pressing block 1-10 is installed in the swinging pressing block assembly, and a pressing block side of the swinging pressing block assembly, and a pressing block assembly is provided with a pressing block 10, and a pressing block side 12, the swinging pressing block side surface of the swinging pressing block assembly; the riveting punch 1-14 can protrude from the swage block 1-13 and deform the rivet 3-3. The lower die part comprises a lower die base 2-1, a lower cushion plate 2-2, a lower clamping plate 2-3, a lower die plate base plate 2-4, a lower die plate 2-5, the assembling and positioning assembly, a riveting and positioning assembly, a metal sheet positioning block and a riveting female die 2-12 which is arranged on the first lower die assembly, penetrates through the second lower die assembly and is located right below the riveting punch 1-14 from bottom to top in sequence. After the swaging blocks 1-13 and the swaging punches 1-14 finish swaging, the swaging female die 2-14 extrudes and deforms a third workpiece and fixedly connects a second workpiece and the first workpiece, and the elastic stroke between the first lower die assembly and the second lower die assembly is not less than the stroke of the swaging female die for extruding and deforming the third workpiece; the lower die base 2-1, the lower cushion plate 2-2 and the lower clamp plate 2-3 are fixedly arranged together to form a first lower die assembly, the lower die plate 2-4 and the lower die plate 2-5 are fixedly arranged together to form a second lower die assembly, alignment relation is guaranteed through guide pillars 1-6, springs are arranged, and a distance elastic stroke is guaranteed between the lower clamp plate and the lower die plate in a die opening state. The first workpiece is a bent part 3-1, the second workpiece is a metal sheet 3-2, and the third workpiece is a rivet 3-3. The assembling and positioning assembly, the riveting and positioning assembly and the metal sheet positioning block are installed in the lower template, the pins 2-6 are installed in the lower template 2-5 from the side, and the side is blocked by bolts and round gaskets. The side faces of the two riveting positioning blocks 2-9 which are symmetrically arranged are in sliding fit with the pin, second springs 2-14 are installed in cavities of the riveting positioning blocks 2-9 and the lower template 2-5, and the second springs 2-14 are used for ensuring that the riveting positioning blocks 2-9 are in an open state in an initial state. The swing pressing block 1-10 is installed on the upper stripper plate 1-5 and is provided with a part extending into an avoidance hole on the lower stripper plate 2-5, and the bending piece 3-1 is pressed by the pressing block spring 1-12. The assembly positioning assembly comprises assembly positioning blocks 2-8 which are symmetrically arranged on the second lower die assembly and can slide along the left-right direction, and first springs 2-11 which enable the two assembly positioning blocks to always have opposite movement trends.

As shown in fig. 4-6 and 8, the first slotting tool 1-8 and the assembly positioning blocks 2-8 have matching wedge surfaces, and when the first slotting tool 1-8 contacts with the assembly positioning blocks 2-8 and moves downwards, the two assembly positioning blocks 2-8 move backwards. The second slotting tool 1-9 and the riveting positioning block 2-9 are provided with matched wedge-shaped surfaces, and when the second slotting tool 1-9 is in contact with the riveting positioning block 2-9 and moves downwards, the two riveting positioning blocks 2-9 move towards each other.

In the die sinking state, a bent part 3-1 to be riveted and a metal sheet 3-2 are placed on a lower template 2-5 and are positioned through a positioning part arranged on the lower template, wherein the metal sheet 3-2 is completely positioned by using a positioning column 2-13 and a metal sheet positioning block 2-10, the metal sheet 3-2 is kept fixed in the riveting process, the bent part 3-1 is positioned by using a positioning pressing block 2-7 and an assembling positioning block 2-8, the assembling positioning block 2-8 is arranged in the lower template 2-5, a first spring 2-11 is arranged on the side face, in the initial state, the assembling positioning block 2-8 clamps two sides of the bent part 3-1 under the spring force, and the assembling positioning block 2-8 is a positioning reference in the assembling process, namely the positioning reference is referred when rivets are automatically placed. The movement mechanism is further described below in terms of a course of action.

In the riveting process, in an initial state, the riveting die is in a die opening state, then the upper die part starts to move downwards, firstly, the guide post 1-6 enters the guide sleeve arranged on the lower die plate 2-5, then the first slotting tool 1-8 is in contact with the assembly positioning block 2-8 and opens the assembly positioning block 2-8, and the first spring 2-11 is compressed in the process; the second slotting tool 1-9 is contacted with the riveting positioning block 2-9 and synchronously moves the riveting positioning block 2-9 in opposite directions, and the second spring 2-14 is compressed in the process; the swing pressing block 1-10 is contacted with the bending piece 3-1 to generate micro swing, and the bending piece 3-1 is pressed by the elastic force provided by the pressing block spring 1-12. When the limiting columns 1-7 are in contact with the lower template 2-5, the relative positions of the first slotting tools 1-8 and the assembly positioning blocks 2-8 are not changed any more, namely the assembly positioning blocks 2-8 are in a fully opened state; the relative position of the second slotting tool 1-9 and the riveting positioning block 2-9 is not changed any more, namely the riveting positioning block 2-9 is in a complete clamping state, at the moment, the riveting positioning block 2-9 is in contact with the side surface of the bending piece 3-1, and the contact surface is a riveting positioning datum. As the upper die part 1 continues to descend, the elastic piece of the upper die part 1 is compressed, and when the upper clamping plate 1-3 and the upper stripper shim plate 1-4 are closed, the swaging blocks 1-13 and the riveting punches 1-14 installed in the upper clamping plate 1-3 are respectively contacted with the bending piece 3-1 and the rivet 3-3 and complete swaging. And then the upper die part 1 continues to move downwards and compresses a stroke spring of the lower die part 2, when the lower clamping plate 2-3 and the lower template base plate 2-4 are closed, the riveting female die 2-12 arranged in the lower clamping plate 2-3 is contacted with the lower end of the rivet 3-3 and generates riveting deformation, and the riveting process is finished. Finally, the upper mold portion 1 is moved upward, and the positioning mechanisms and the mold plates are returned to their original positions by the spring force.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (9)

1. An automatic pilot riveting die for riveting a plurality of workpieces comprises an upper die part and a lower die part, wherein the upper die part comprises a first upper die assembly, a second upper die assembly which can slide up and down and is suspended below the first upper die assembly, an elastic piece which is connected between the first upper die assembly and the second upper die assembly and enables the first upper die assembly and the second upper die assembly to have a distance elastic stroke in an open die state, the lower die part comprises a first lower die assembly, a second lower die assembly which can slide up and down and is arranged above the first lower die assembly, and an elastic piece which is connected between the first lower die assembly and the second lower die assembly and enables the first lower die assembly and the second lower die assembly to have a distance elastic stroke in an open die state, and the automatic pilot riveting die is characterized in that: the upper die part also comprises a first slotting tool and a second slotting tool which are arranged in a cavity of the second upper die component, and a material pressing block and a riveting punch which are arranged in the first upper die component and penetrate through the second upper die component; the lower die part further comprises a positioning column, a metal sheet positioning block, a positioning pressing block, an assembling positioning assembly and a riveting positioning assembly which are arranged on the second lower die assembly, the metal sheet positioning block and the positioning column limit the position of a second workpiece, the positioning pressing block and the assembling positioning assembly limit the position of a first workpiece, the riveting positioning assembly clamps the first workpiece when the assembling positioning assembly releases the first workpiece, and the elastic stroke between the first upper die assembly and the second upper die assembly is not smaller than the material pressing stroke of the riveting punch on the first workpiece.

2. The automatic pilot riveting die of claim 1, wherein: the lower die part comprises a riveting female die which is arranged on the first lower die assembly and penetrates through the second lower die assembly and is located right below the riveting punch, after the riveting punch finishes pressing, the riveting female die extrudes and deforms a third workpiece and enables the second workpiece to be fixedly connected with the first workpiece, and the elastic stroke between the first lower die assembly and the second lower die assembly is not smaller than the stroke of the riveting female die for extruding the third workpiece to enable the third workpiece to deform.

3. The self-correcting riveting die of claim 1, wherein: the assembly positioning assembly comprises assembly positioning blocks which are symmetrically arranged on the second lower die assembly and can slide along the left-right direction, and first springs which enable the two assembly positioning blocks to always have opposite movement trends.

4. The self-correcting riveting die of claim 1, wherein: the riveting positioning assembly comprises riveting positioning blocks which are symmetrically arranged on the second lower die assembly and can slide along the left-right direction, and a second spring which enables the two riveting positioning blocks to always have the tendency of moving back to back.

5. The self-correcting riveting die of claim 3, wherein: the first slotting tool and the assembling positioning blocks are provided with matched wedge-shaped surfaces, and when the first slotting tool is in contact with the assembling positioning blocks and moves downwards, the two assembling positioning blocks move backwards.

6. The self-correcting riveting die of claim 4, wherein: the second slotting tool and the riveting positioning block are provided with matched wedge-shaped surfaces, and when the second slotting tool is in contact with the riveting positioning block and moves downwards, the two riveting positioning blocks move oppositely.

7. The self-correcting riveting die of claim 1, wherein: offer on the rear end portion of the up end of second lower mould subassembly and dodge the hole of dodging of the part of first work piece downwardly extending, go up mould portion still including swing briquetting, messenger the swing briquetting has throughout and compresses tightly first work piece at the briquetting spring of dodging on the downthehole wall, swing briquetting rotate connect in go up the mould subassembly on the second and around the axis swing of left right direction extension.

8. The self-correcting riveting die of claim 1, wherein: the first upper die assembly comprises an upper die base, an upper base plate and an upper clamping plate which are fixedly connected from top to bottom in sequence; the second upper die assembly comprises an upper stripping base plate and an upper stripping plate which are fixedly connected from top to bottom in sequence.

9. The self-correcting riveting die of claim 1, wherein: the first lower die assembly comprises a lower die base, a lower backing plate and a lower clamping plate which are fixedly connected from bottom to top in sequence; the second lower die assembly comprises a lower die plate base plate and a lower die plate which are fixedly connected from bottom to top in sequence.

Images