CN102873250A

CN102873250A - Riveting machine for stamping short-axis hinge

Info

Publication number: CN102873250A
Application number: CN2011101948544A
Authority: CN
Inventors: 周永明; 陈晓晶; 唐富贵; 宋光文
Original assignee: SHANGHAI HONGCHANG AUTOMOBILE FITTINGS CO Ltd
Current assignee: SHANGHAI HONGCHANG AUTOMOBILE FITTINGS CO Ltd
Priority date: 2011-07-12
Filing date: 2011-07-12
Publication date: 2013-01-16

Abstract

The invention discloses a riveting machine for stamping a short-axis hinge. The riveting machine comprises a special stamping die and a punch press matched with the special stamping die, wherein the special stamping die comprises a convex die formed by a die handle, a bolt, a convex die and pre-pressed rubber, and a lower die formed by a bottom plate, a convex die base, a concave die, a locating square element and a locating arc element; the die handle and the convex die are fixed by the bolt; the pre-pressed rubber is sleeved on the convex die; the locating square element resists against the concave die and is supported by the bottom plate; the locating arc element is fixed at the end part of the bottom plate; a main hinge and a hinge support element are arranged on the locating square element; a secondary hinge assembly is arranged on the locating arc element; a rivet inside a secondary hinge assembly bushing is arranged inside the concave die cavity; the die handle is arranged inside a slide block hole of the punch press; and the lower die is fixed on a work bench of the punch press. The torque stability of the hinge is good; the hinge is has long service life, and can undergo a high and low temperature durability test; the riveting strength of the hinge is enhanced; the riveting release force is improved; and the deviation of the location of the mounting hole of the hinge and the molding surface deviation of a riveting normal direction of the riveted hinge are reduced.

Description

Minor axis hinge stamping riveting machine

Technical field

The present invention relates to a kind of minor axis hinge stamping riveting machine, specifically be used for the riveted joint to a kind of automobile front/rear cover hinge assembly and other all minor axis hinge assemblies.

Background technology

The luggage compartment cover hinge of car and the structure of hood hinge product generally are comprised of body part (being commonly called as main hinge), car bonnet spare (being commonly called as secondary hinge), rivet (also claiming bearing pin) and lining (or and axle sleeve), be to be pressed into bearing pin after having secondary hinge shaft hole to be pressed into axle sleeve and flange in axle sleeve, then the shaft hole of main hinge is inserted in bearing pin on the little assembly of secondary hinge and rivets and form again.The raw material of major and minor hinge are generally the hot continuous rolling pickled plate that vehicle structure is used, and bearing pin is generally used cold-forging steel, and axle sleeve is by the material of metal as the heat-resistant antifriction of a kind of PTFE of substrate hot compress.

Domestic traditional clinching method is to connect with the spinning riveting riveting by machine, is to cooperate easy positioning tool to hold by hand part by the spinning riveting machine to produce the process that downward pressure is finished the riveted joint of minor axis hinge through the machinery rotation and by hydraulic pressure.

Its shortcoming is: this technique can't be installed prepressing device, can have the gap between the major-minor hinge when riveted joint, can have the gap equally behind the riveted joint finished product, causes the larger deviation of finished product profile Y-direction;

Hinge rivet and main hinge contact-making surface behind the spinning riveting are little, are unable to undergo the test of high low temperature long duration test and riveted joint tearaway load, and the major-minor hinge is short service life.

Summary of the invention

The technical problem to be solved in the present invention is: after overcoming the riveted joint processing of traditional spinning riveting machine to the minor axis hinge, the major-minor hinge exists gap, service life to lack, be unable to undergo the technical problems such as height long duration test, and a kind of minor axis hinge stamping riveting machine is provided.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of minor axis hinge stamping riveting machine, be used for minor axis major-minor hinge assembly is riveted processing, comprise punching press particular manufacturing craft and the punch press that cooperates with the punching press particular manufacturing craft, the punching press particular manufacturing craft comprises by die shank, bolt, the punch that punch and precompressed rubber form, and by base plate, the die base, die, the counterdie that the side's of location part and location arc spare form, die shank and punch are bolted, socket precompressed rubber on the punch, the side's of location part near die by backplanes support, location arc spare is fixed on bottom end, main hinge and hinge support are placed on location side's part, secondary hinge assembly is installed on the arc spare of location, rivet in the lining of secondary hinge assembly is placed in the concave die cavity, die shank is installed in the slider bore of punch press, and counterdie is fixed on the work top of punch press.

The invention has the beneficial effects as follows: it is hinged by this equipment the minor axis hinge to be carried out punching press, the property enhancement of product: need be smooth and easy during hinge opening and closing, the good stability of moment; Prolong the service life of hinge, and stood high low temperature long duration test; Strengthen the riveting intensity of hinge, improved the riveted joint tearaway load;

Product size is guaranteed: the deviation that has reduced hinge mounting hole position size; Reduced hinge riveting after the riveted joint to the profile deviation.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the schematic diagram through product behind the stamping riveting.

The specific embodiment

In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.

As shown in Figure 1, a kind of minor axis hinge stamping riveting machine, be used for minor axis major-minor hinge assembly is riveted processing, comprise punching press particular manufacturing craft and the punch press that cooperates with the punching press particular manufacturing craft, the punching press particular manufacturing craft comprises by die shank 1, bolt 2, the punch that punch 3 and precompressed rubber 4 form, and by base plate 9, die base 8, die 7, the counterdie that the side's of location part 6 and location arc spare 5 form, die shank 1 and punch 3 are fixing by bolt 2, socket precompressed rubber 4 on the punch 3, the side's of location part 6 is supported by base plate 9 near die 7, location arc spare 5 is fixed on base plate 9 ends, main hinge and hinge support are placed on location side's part 6, secondary hinge assembly is installed on the arc spare 5 of location, rivet 11 in the lining 13 of secondary hinge assembly is placed in die 7 die cavities, and die shank 1 is installed in the slider bore of punch press, and counterdie is fixed on the work top of punch press.

For the requirement of hinge long duration test, particularly 30000 long duration tests with the high low temperature of dust of Shanghai Volkswagen's rear cover hinge must be satisfied in the attenuation 30% of hinge moment, end play≤0.5mm after the test; The bearing pin riveted joint tearaway load 〉=14500N of front cover hinge.Can only adopt the technique guarantee of stamping riveting to be close to the performance test of harsh test standard.

Advantage of the present invention is:

1, because the precompressed rubber has been installed, major and minor hinge is not also riveted the front rear riveted joint that compressed first, gap behind the hinge assembly between major and minor hinge can be eliminated fully, reduces the Y-direction dimensional discrepancy of hinge general assembly hole site and the profile deviation that secondary hinge matches car bonnet in the maximum magnitude;

2, rivet because of the mode that adopts punching press, active force is vertically downward, patrix act on bearing pin axially huge active force can bearing pin axially with flat and jumping-up of upsetting all radially, increase hinge general assembly rear pin shaft fully axially and the contact-making surface of main hinge, and automatically finish bearing pin working portion external diameter and radially cooperate with sleeve diameter ideal radially.Moment during hinge opening and closing is naturally also smooth and easy, front cover hinge assembly bearing pin riveted joint tearaway load also can increase than old technique a lot naturally, because the increase of contact-making surface, the face that means friction portion increases, just more wear-resisting, the hinge life, the requirement of the high low temperature long duration test of rear cover hinge assembly is just better to be guaranteed.

As shown in Figure 2, be shape between main hinge 10 behind the stamping riveting, secondary hinge 12 and the rivet 11.Fit fully between this three, can guarantee the size of product, also can strengthen the performance of product.Rivet 11 is topmost fitted fully with main hinge 10 will improve the riveted joint tearaway load, prolongs simultaneously the life-span of hinge.

Claims

1. minor axis hinge stamping riveting machine, be used for minor axis major-minor hinge assembly is riveted processing, comprise punching press particular manufacturing craft and the punch press that cooperates with the punching press particular manufacturing craft, it is characterized in that: the punching press particular manufacturing craft comprises by die shank (1), bolt (2), the punch that punch (3) and precompressed rubber (4) form, and by base plate (9), die base (8), die (7), the counterdie that the side's of location part (6) and location arc spare (5) form, die shank (1) and punch (3) are fixing by bolt (2), the upper socket of punch (3) precompressed rubber (4), the side's of location part (6) is supported by base plate (9) near die (7), location arc spare (5) is fixed on base plate (9) end, main hinge and hinge support are placed on location side's part (6), secondary hinge assembly is installed on the location arc spare (5), rivet in the lining of secondary hinge assembly is placed in die (7) die cavity, die shank (1) is installed in the slider bore of punch press, and counterdie is fixed on the work top of punch press.