CN203002953U

CN203002953U - Bumper flattening mold

Info

Publication number: CN203002953U
Application number: CN 201220647052
Authority: CN
Inventors: 艾刚; 翟凤云
Original assignee: CHONGQING BEIBEI DISTRICT FENGHUO MACHINERY MANUFACTURING Co Ltd
Current assignee: CHONGQING BEIBEI DISTRICT FENGHUO MACHINERY MANUFACTURING Co Ltd
Priority date: 2012-11-30
Filing date: 2012-11-30
Publication date: 2013-06-19
Anticipated expiration: 2022-11-30

Abstract

The utility model discloses a bumper flattening mold, which comprises an upper mold and a lower mold. The lower mold comprises a lower mold plate, a cavity, pressing blocks and positioning assemblies which are used for positioning a workpiece, wherein the cavity is fixedly arranged in the middle part of the top surface of the lower mold plate, the number of the pressing blocks is two, the two pressing blocks are respectively arranged on the left side and the right side of the cavity, the pressing blocks are horizontally and slideably arranged on the top surface of the lower mold plate, and a flattening gap is formed between the pressing blocks and the cavity. The upper mold comprises an upper mold plate and two pushing blocks which move downwards with the upper mold plate and push the pressing blocks to horizontally slide towards the cavity to flatten the flattening gap. One sides of the pressing blocks opposite to the cavity are upper inclined planes. The internal sides of the pushing blocks are lower inclined planes with inclination which is equal to the inclination of the upper inclined planes of the pressing blocks. The bumper flattening mold provided by the utility model has the advantages that since the flattening gap with a certain inclination angle is arranged, the parallelism of the two ends of a bumper after flattening and rebounding can be guaranteed; and since avoiding grooves are arranged at positions corresponding to flattening positions, a flattening transition area is formed after flattening, stress concentration points can be eliminated, the structural strength of the bumper is guaranteed and the service life of the bumper is prolonged.

Description

The bumper bar flattening mold

Technical field

The utility model relates to a kind of mould, relates in particular to a kind of bumper bar flattening mold.

Background technology

for the part made from metal tube, as the bumper bar that is bent in obtuse angle to a side by the U-shaped tube end, be fixedly connected with general employing welding with other parts or bolt is connected, when wherein with bolts, in order to guarantee bonding strength, make connecting bolt have certain screwing force, need to flatten at the place of connecting, be used for the place of flattening, the bumper bar end generation resilience that the flattening mold of bumper bar processes in prior art, make bumper bar both ends flatten place's depth of parallelism relatively poor, assembling is bad, generally can produce internal stress, syndeton is fragile, and the place's of flattening distortion is lofty, stress concentration point is arranged, frangibility, service life is short.

Therefore, for addressing the above problem, need to be improved existing bumper bar flattening mold, the depth of parallelism of processing after resilience flattened at guarantee insurance bar both ends, and forms and flatten transitional region, and centrostigma eliminates stress, guarantee insurance bar structural strength extends its service life.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of bumper bar flattening mold, but the depth of parallelism after the processing resilience is flattened at guarantee insurance bar both ends, and transitional region is flattened in formation, the centrostigma that eliminates stress, guarantee insurance bar structural strength extends its service life.

Bumper bar flattening mold of the present utility model, this bumper bar is made by the U-shaped pipe, described U-shaped tube end bends in obtuse angle to a side, comprise upper die and lower die, the positioning component that described counterdie comprises lower bolster, core rod, briquetting and is used for workpiece is positioned, described core rod is fixed in lower bolster end face middle part, and described briquetting is two and is respectively in the core rod left and right sides and arranges, the briquetting horizontal slip be located at the lower bolster end face and and core rod between form and flatten the gap; Described patrix comprise cope match-plate pattern and be used for descending with cope match-plate pattern so promote briquetting to described core rod horizontal slip to press from both sides flat described two pushing blocks flattening the gap, a briquetting side of core rod dorsad is upper tapered plane, and the pushing block inboard is the lower tapered plane identical with tapered plane gradient on briquetting.

Further, described to a lateral deviation of core rod oblique 0 ° ~ 7 ° from front to back, the gap of flattening;

Further, described positioning component comprises that lower bolster is fixed in the front side that described bearing and limited block are distributed in described core rod and briquetting for supporting the bearing that the U-shaped pipe stretches into its both ends correspondence that need flatten processing to flatten the gap and being used for U-shaped pipe bottom is stopped spacing preventing it around the limited block of bearing upper edge upset;

Further, the corresponding U-shaped tube end of described briquetting bending segment is provided with slot to make way;

Further, described counterdie also comprises two blocks, and described block correspondence one by one is positioned at the pushing block outside and is fixed in lower bolster;

Further, described counterdie also comprises backboard, the rear side that described backboard is distributed in described core rod and briquetting is fixed in lower bolster, and briquetting is located between backboard and bearing and slides spacingly, and backboard and bearing are located between two blocks and are fixedly connected with two blocks respectively;

Further, described briquetting is connected in the block of its homonymy by the elasticity pulling device, described elasticity pulling device comprises and is fixed in briquetting and passes the horizontal stayed pole that corresponding block stretches out and be sheathed on described horizontal stayed pole external part and bullet peaks at the Compress Spring of block lateral surface, and described stayed pole external part end is provided be used to the nut that blocks Compress Spring and catch; The corresponding stayed pole of described pushing block is provided with open slot.

The beneficial effects of the utility model are: bumper bar flattening mold of the present utility model, be provided with the gap of flattening with certain inclination angle, the depth of parallelism after the processing resilience is flattened at energy guarantee insurance bar both ends, and the correspondence place of flattening arranges slot to make way, can make to flatten to process to form afterwards and flatten transitional region, the centrostigma that can eliminate stress, guarantee insurance bar structural strength extends its service life.

Description of drawings

Below in conjunction with drawings and Examples, the utility model is further described:

Fig. 1 is half sectional view of the present utility model;

Fig. 2 is the counterdie plane;

Fig. 3 is the A-A cutaway view of Fig. 1.

The specific embodiment

Fig. 1 is half sectional view of the present utility model, Fig. 2 is the counterdie plane, Fig. 3 is the A-A cutaway view of Fig. 1, as shown in the figure: the bumper bar flattening mold of the present embodiment, this bumper bar is made by the U-shaped pipe, described U-shaped tube end bends in obtuse angle to a side, comprise upper die and lower die, described counterdie comprises lower bolster 1, core rod 2, the positioning component that briquetting 3 and be used for positions workpiece, described core rod 2 is fixed in the middle part of lower bolster 1 end face, described briquetting 3 is two and is respectively in core rod 2 left and right sides settings, briquetting 3 horizontal slips be located at lower bolster 1 end face and and core rod 2 between form and to flatten the gap, described patrix comprise cope match-plate pattern 4 and be used for descending with cope match-plate pattern 4 so promote briquetting 3 to described core rod 2 horizontal slips to press from both sides flat described two pushing blocks 5 flattening the gap, briquetting 3 side of core rod 2 dorsad is upper tapered plane, pushing block 5 inboards are the lower tapered plane identical with tapered plane gradient on briquetting 3, in the present embodiment, upper tapered plane refers to the inclined-plane towards oblique upper, lower tapered plane makes it the plane towards oblique below, briquetting 3 can arrange automatic reset device, when making patrix up, briquetting 3 automatically resets, and is beneficial to pick and place part, be fixed with die shank 13 in the middle part of cope match-plate pattern 4 end faces.

In the present embodiment, drift angle numerical value can specifically be set according to the springback capacity of different materials in described to a lateral deviation of core rod 2 oblique 0 ° ~ 7 ° from front to back, the gap of flattening, and the depth of parallelism after the processing resilience is flattened at guarantee insurance bar both ends.

In the present embodiment, described positioning component comprises for supporting the bearing 6 that the U-shaped pipe stretches into its both ends correspondence that need flatten processing to flatten the gap and being used for stopping spacing to prevent that it is around the limited block 7 of bearing 6 upper edges upsets to U-shaped pipe bottom, lower bolster 1 is fixed in the front side that described bearing 6 and limited block 7 are distributed in described core rod 2 and briquetting 3, the positioning component of the present embodiment is located reliable to workpiece, pick and place part convenient, and bearing 6 also can be used as the spacing block piece of briquetting 3, and is simple and reasonable for structure.

In the present embodiment, the corresponding U-shaped tube end of described briquetting 3 bending segment is provided with slot to make way 8, can make to flatten to process to form afterwards to flatten transitional region, the centrostigma that can eliminate stress, guarantee insurance bar structural strength.

In the present embodiment; described counterdie also comprises two blocks 9, and described block 9 correspondence one by one is positioned at pushing block 5 outsides and is fixed in lower bolster 1, can provide horizontal support power for pushing block 5; avoid flattening and add man-hour pushing block 5 because reaction force tilts, can guarantee the stable and crudy of mould structure.

in the present embodiment, described counterdie also comprises backboard 10, the rear side that described backboard 10 is distributed in described core rod 2 and briquetting 3 is fixed in lower bolster 1, briquetting 3 be located between backboard 10 and bearing 6 slide spacing, backboard 10 and bearing 6 are located between two blocks 9 and are fixedly connected with two blocks 9 respectively, can limit the horizontal slip free degree of briquetting 3 by backboard 10 and bearing 6, improve the mold integral operation stability, serviceability is good, and the connection function by backboard 10 and bearing 6 and two blocks 9 can make two block 9 cooperative bearings, make to flatten and add the man-hour reaction force and cancel out each other, the mold integral stress performance is good.

In the present embodiment, described briquetting 3 is connected in the block 9 of its homonymy by the elasticity pulling device, described elasticity pulling device comprises and is fixed in briquetting 3 and passes the horizontal stayed pole 11 that corresponding block 9 stretches out and be sheathed on described horizontal stayed pole 11 external parts and bullet peaks at the Compress Spring of block 9 lateral surfaces, and described stayed pole 11 external part ends are provided be used to the nut that blocks Compress Spring and catch; The corresponding stayed pole 11 of described pushing block 5 is provided with open slot 14, and as shown in Figure 1, corresponding each briquetting 3 of described pulling device is arranged above and below two covers are set, can effectively guarantee automatically reseting of briquetting 3, be beneficial to and pick and place part, can improve the continuity of processing, be beneficial to the raising working (machining) efficiency.

Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. bumper bar flattening mold, this bumper bar is made by the U-shaped pipe, described U-shaped tube end bends in obtuse angle to a side, it is characterized in that: comprise upper die and lower die, the positioning component that described counterdie comprises lower bolster, core rod, briquetting and is used for workpiece is positioned, described core rod is fixed in lower bolster end face middle part, and described briquetting is two and is respectively in the core rod left and right sides and arranges, the briquetting horizontal slip be located at the lower bolster end face and and core rod between form and flatten the gap; Described patrix comprise cope match-plate pattern and be used for descending with cope match-plate pattern so promote briquetting to described core rod horizontal slip to press from both sides flat described two pushing blocks flattening the gap, a briquetting side of core rod dorsad is upper tapered plane, and the pushing block inboard is the lower tapered plane identical with tapered plane gradient on briquetting.

2. bumper bar flattening mold according to claim 1 is characterized in that: described to a lateral deviation of core rod oblique 0 ° ~ 7 ° from front to back, the gap of flattening.

3. bumper bar flattening mold according to claim 2, it is characterized in that: described positioning component comprises that lower bolster is fixed in the front side that described bearing and limited block are distributed in described core rod and briquetting for supporting the bearing that the U-shaped pipe stretches into its both ends correspondence that need flatten processing to flatten the gap and being used for U-shaped pipe bottom is stopped spacing preventing it around the limited block of bearing upper edge upset.

4. bumper bar flattening mold according to claim 3 is characterized in that: the corresponding U-shaped tube end of described briquetting bending segment is provided with slot to make way.

5. bumper bar flattening mold according to claim 4, it is characterized in that: described counterdie also comprises two blocks, described block correspondence one by one is positioned at the pushing block outside and is fixed in lower bolster.

6. bumper bar flattening mold according to claim 5; it is characterized in that: described counterdie also comprises backboard; the rear side that described backboard is distributed in described core rod and briquetting is fixed in lower bolster; briquetting is located between backboard and bearing and slides spacingly, and backboard and bearing are located between two blocks and are fixedly connected with two blocks respectively.

7. bumper bar flattening mold according to claim 6, it is characterized in that: described briquetting is connected in the block of its homonymy by the elasticity pulling device, described elasticity pulling device comprises and is fixed in briquetting and passes the horizontal stayed pole that corresponding block stretches out and be sheathed on described horizontal stayed pole external part and bullet peaks at the Compress Spring of block lateral surface, and described stayed pole external part end is provided be used to the nut that blocks Compress Spring and catch; The corresponding stayed pole of described pushing block is provided with open slot.