CN102189216B

CN102189216B - Rivet punching die

Info

Publication number: CN102189216B
Application number: CN 201110065584
Authority: CN
Inventors: 李学华
Original assignee: HEFEI HUALIN MOULD CO Ltd
Current assignee: HEFEI HUALIN MOULD CO Ltd
Priority date: 2011-03-18
Filing date: 2011-03-18
Publication date: 2013-04-10
Anticipated expiration: 2031-03-18
Also published as: CN102189216A

Abstract

The invention relates to the field of dies, in particular to a rivet punching die. A riveting punch is arranged on an upper die plate, an overhanging concave die is fixedly connected to a bracket, a spring is arranged between a pressure plate and the upper die plate, a guide mechanism is arranged between the upper plate and the bracket, the riveting punch passes through the pressure plate and the head of the riveting punch is in punching fit with the concave die, the overhanging part of the concave die is provided with a support mechanism, and the concave die counteracts most of punching force under the action of the support mechanism, therefore the deformation of the concave die is effectively improved, the riveting quality is improved, a flat riveting surface is ensured and the service life of the die is prolonged.

Description

A kind of rivet punching die

Technical field

The present invention relates to mould applications, particularly rivet punching die.

Background technology

Rivet connects as a kind of connected mode commonly used in the machining; usually the fillet of box body or housing shape part 70 adopts rivet to connect; the die that is used for pressure rivet is cantilever-shaped more; to be processed is set on the die; stamping press to die in the riveting process is larger; cause easily the flexural deformation of die overhang; the die phenomenon that can fracture when serious; die causes stressed not of uniform size the causing of rivet riveting when producing bending; the out-of-flatness of riveting face; affect riveting quality, cause mould normally to use.

Summary of the invention

The purpose of this invention is to provide a kind of die that effectively prevents and produce distortion, improve the rivet punching die of riveting quality.

For achieving the above object, the present invention has adopted following technical scheme: a kind of rivet punching die, comprise that cope match-plate pattern is provided with the riveting drift, the die of shape of overhanging is fixed on the support, be provided with spring between holding pad and the cope match-plate pattern, be provided with guiding mechanism between cope match-plate pattern and the support, the riveting drift passes holding pad and its head cooperates with the punching press of die formation, the overhang of die is provided with supporting mechanism, described supporting mechanism is the push rod 21 between support 20 and die 30, the upper end of push rod 21 consists of conflict with die 30 and cooperates, described die 30 is provided with the through hole 32 that passes for push rod 21, the upper end of push rod 21 is provided with cap nut 23, and the external diameter of this nut 23 is greater than the aperture of through hole 32, and the upper surface of nut 23 is resisted against the periphery place of through hole 32 lower ends.

Because adopt above technical scheme, die is offset most stamping press under the effect of supporting mechanism, prevent that effectively die from producing distortion, improved riveting quality, guarantee that the riveting face is smooth, prolong die life.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the top view of die;

Fig. 3 is the top view of holding pad;

Fig. 4 is the top view of fixed head;

Fig. 5 is the perspective view of processed product;

Fig. 6 is the I section enlarged drawing of Fig. 5;

Fig. 7 is positive up and down narrow limit perspective view among Fig. 5;

The specific embodiment

A kind of rivet punching die, comprise that cope match-plate pattern 10 is provided with riveting drift 11, the die 30 of shape of overhanging is fixed on the support 20, be provided with spring 50 between holding pad 40 and the cope match-plate pattern 10, be provided with guiding mechanism 60 between cope match-plate pattern 10 and the support 20, riveting drift 11 passes holding pad 40 and its head cooperates with die 30 formation punching presses, and the overhang of die 30 is provided with supporting mechanism.One end of die 30 is fixed in that the other end is the shape that overhangs on the support 20, to be processed is set on the die 30, riveting drift 11 passes holding pad 40 rear punch rivets, realizes riveted joint, in punching course, the overhang of die 30 is under the effect of supporting mechanism, offset most stamping press, prevent that effectively die from deforming, and improved riveting quality, guarantee that the riveting face is smooth, prolong die life.

Described supporting mechanism is the push rod 21 between support 20 and die 30, the upper end of push rod 21 consists of conflict with die 30 and cooperates, the hydraulic press supporting post-rod 21 of taking blame for others among the present invention, die 30 is supported in the upper end of push rod 21, push rod 21 is positioned at the below of die 30 projecting ends, during punch rivet, push rod is played a supporting role to die 30, the overhang that hinders die 30 moves downward, prevented that effectively die 30 from producing distortion, guarantee that the gap between die 30 and the holding pad 40 is even, thereby guarantee the smooth of riveting face, improve riveting quality.The riveting face of to be processed corresponding both sides among the present invention is plate frame structure, leave the space that push rod 21 passes through, in other words, under the prerequisite that does not affect to be processed functional requirement, consist of on to be processed the plate face and offer aperture or notch part, avoiding to be processed when shifting to mould or separating with mould and push rod 2l interferes, or when guaranteeing to be processed the corresponding position that can be placed into die 30, push rod 21 can be in the support position.

Described cope match-plate pattern 10 is provided with little guide pillar 12, and the corresponding position of die 30 is provided with the guide pillar hole 31 that size matches, and little guide pillar 12 passes holding pad 40 from top to bottom and consists of grafting with guide pillar hole 31 and cooperates.Little guide pillar 12 is positioned at guide pillar hole 31 and can moves up and down, make the overhang generation of die 30 be bent downwardly distortion in the process of riveting drift 11 punch rivets, because little guide pillar 12 is positioned at guide pillar hole 31, the overhang that hinders die 30 moves downward, prevent that effectively die 30 from producing distortion, guarantee riveting quality, same as above, gap portions behind the aperture is offered in the plate face corresponding position that consists of to be processed, in order to pass through for little guide pillar 12, little guide pillar 12 can insert in the guide pillar hole 31 on the die 30 smoothly when guaranteeing matched moulds.As shown in Figure 5, the front and back of processed product all is free oral area, two sides and bottom surface are the entity shape, case or box mouth one end of upper end are ends that at first inserts die 30, the positive narrow limit 7l in the left and right sides, 72 and positive up and down

narrow limit

73,74 pressed by mould respectively and be integrated, wherein

narrow limit

71,72 is the riveting limit.

Described guiding mechanism 60 cooperates for the guide pillar guide pin bushing, the spacing direction of guiding mechanism 60 is parallel with the support direction of supporting mechanism, adopt the guide pillar guide sleeve structure simple, guidance quality is good, guide pillar is fixed on the cope match-plate pattern among the present invention, and guide pin bushing is positioned on the support 20, under the cooperation of guide pillar guide pin bushing, guarantee that the cope match-plate pattern position is accurate, improve riveting quality.

Described die 30 is provided with the locating hole 33 of rivet, this locating hole 33 is positioned at the both sides of the edge place adjacent with die 30 stiff ends, riveting drift 11 is corresponding with the position of locating hole 33, to be processed be set on the die 30 after, rivet is placed in position at locating hole 33, play just positioning action, guarantee the degree of accuracy of rivet position, locating hole 33 can be the recess area of counterbore or blind hole form.

Described holding pad 40 is provided with resigning hole 41, and resigning hole 41 and size corresponding with the position of riveting drift 11 matches, and holding pad 40 is provided with the hole 42 of passing for little guide pillar 12.Rivet is higher than the riveting face before the punching press, and when holding pad 40 compressed the riveting face, the head of rivet was positioned at resigning hole 41, and this resigning hole 41 has been determined the rivet position, prevents that the rivet generation is mobile in the punching course, guarantees that the rivet position is accurate, improves riveting quality.

Described cope match-plate pattern 10 is provided with fixed head 13, riveting drift 11 all is fixed on the fixed head 13 with little guide pillar 12, fixed head 13 is fixed on the cope match-plate pattern 10 by screw, only needs fixed disassembly plate 13 to realize when changing riveting drift 11 or little guide pillar 12, and is simple to operation.

Described die 30 is provided with the through hole 32 that passes for push rod 21, and the upper end of push rod 21 is provided with cap nut 23, and the external diameter of this nut 23 is greater than the aperture of through hole 32, and the upper surface of nut 23 is resisted against the periphery place of through hole 32 lower ends.During installation, push rod 21 passes the below that is positioned at die 30 behind the through hole 32, the nut 23 of screwing at the upper end place of push rod 21, regulate push rod 21 height, make push rod 21 be in moderate bearing height, the dismounting that nut 23 is convenient to push rod 21 is set, also can play the effect of fine setting push rod 21 height simultaneously.

Described riveting drift 11 is arranged in the edge of the relative dual-side of fixed head 13, little guide pillar 12 is between riveting drift 11, with guide pillar hole 31 deflections on the die 30 that little guide pillar 12 cooperates end one side that suspends, the position of the locating hole 33 that arranges on riveting drift 11 and the die 30 is corresponding, little guide pillar 12 intervals are arranged two, stressed even, prevent that more effectively die 30 from producing distortion in punching course.

Claims

1. rivet punching die, comprise that cope match-plate pattern (10) is provided with riveting drift (11), the die (30) of shape of overhanging is fixed on the support (20), be provided with spring (50) between holding pad (40) and the cope match-plate pattern (10), be provided with guiding mechanism (60) between cope match-plate pattern (10) and the support (20), riveting drift (11) passes holding pad (40) and its head cooperates with the punching press of die (30) formation, it is characterized in that: the overhang of die (30) is provided with supporting mechanism, described supporting mechanism is for being positioned at the push rod (21) between support (20) and the die (30), the upper end of push rod (21) consists of conflict with die (30) and cooperates, described die (30) is provided with the through hole (32) that passes for push rod (21), the upper end of push rod (21) is provided with cap nut (23), the external diameter of this nut (23) is greater than the aperture of through hole (32), and the upper surface of nut (23) is resisted against the periphery place of through hole (32) lower end.

2. according to the described rivet punching die of claim l, it is characterized in that: described cope match-plate pattern (10) is provided with little guide pillar (12), the corresponding position of die (30) is provided with the guide pillar hole (31) that size matches, and little guide pillar (12) passes holding pad (40) from top to bottom and consists of grafting with guide pillar hole (31) and cooperates.

3. according to the described rivet punching die of claim l, it is characterized in that: described guiding mechanism (60) cooperates for the guide pillar guide pin bushing, and the spacing direction of guiding mechanism (60) is parallel with the support direction of supporting mechanism.

4. rivet punching die according to claim 1, it is characterized in that: described die (30) is provided with the locating hole (33) of rivet, this locating hole (33) is positioned at the both sides of the edge place adjacent with die (30) stiff end, and riveting drift (11) is corresponding with the position of locating hole (33).

5. rivet punching die according to claim 1 and 2, it is characterized in that: described holding pad (40) is provided with resigning hole (41), resigning hole (41) and size corresponding with the position of riveting drift (11) matches, and holding pad (40) is provided with the hole (42) of passing for little guide pillar (12).

6. rivet punching die according to claim 1 and 2, it is characterized in that: described cope match-plate pattern (10) is provided with fixed head (13), and riveting drift (11) all is fixed on the fixed head (13) with little guide pillar (12).

7. rivet punching die according to claim 6, it is characterized in that: described riveting drift (11) is arranged in the edge of the relative dual-side of fixed head (13), little guide pillar (12) is positioned between the riveting drift (11), with guide pillar hole (31) deflection on the die (30) that little guide pillar (12) cooperates end one side that suspends.