CN209349446U - A kind of taper roller combined down molds of band exhaust - Google Patents

Abstract

The utility model relates to taper roller stamping die apparatus field, specifically a kind of taper roller combined down molds of band exhaust.Including the thimble in housing, the forming core being arranged in the top notch of housing and the bottom plate rabbet that housing is arranged in；Thimble includes traveller and is fixed on traveller upper end and cross section as the bowed top pillar of major arc；The top of forming core is equipped with for cooperating with upper mold with the type chamber of punching press production taper roller, and bottom is equipped with the intercommunicating pore being connected to type chamber；The first row stomata being connected with intercommunicating pore is offered on the side wall of forming core, second row stomata is offered on the side wall of housing, it is equipped with guide spring jointly in first row stomata and second row stomata, steel ball is equipped in first row stomata, steel ball is pressed on the planar side of top pillar by the elastic force of guide spring.The utility model can be by being rationally vented to improve service life, and avoids end face flaw caused by punching press air-flow.

Description

A kind of taper roller combined down molds of band exhaust

Technical field

The utility model relates to taper roller stamping die apparatus field, specifically a kind of taper roller of band exhaust Combined down molds.

Background technique

Taper roller in the prior art largely uses cold-heading impact style to manufacture.Its mold includes lower die and upper Mould is equipped with forming core in lower die, offers shape contour type chamber corresponding with taper roller at the top of forming core.It is raw in punching press In production, after green body is put into the type chamber in forming core, is acted on by the punching press of upper mold and taper roller is made in green body punching press.

Lower die in the prior art has the following problems, on the one hand, the air in the medium-sized chamber of punching course nowhere discharges, It is easy because crack of die deforms caused by air pressure is excessive, initial failure, service life is lower；On the other hand, the medium-sized chamber of punching course Interior air random motion and ultimately forms the random turbulent flow of green body lower end in type chamber, so that the circular cone of punching production rolls Sub- lower end surface generates irregular flaw with air-flow, and further reconditioning is needed to process, and reduces production efficiency.

Utility model content

The utility model is intended to provide a kind of taper roller combined down molds to be vented, and is used by being rationally vented with improving Service life, and avoid end face flaw caused by punching press air-flow.

In order to solve the above technical problems, the technical solution adopted in the utility model are as follows: a kind of taper roller of band exhaust Combined down molds, including in housing, the forming core being arranged in the top notch of housing and the bottom plate rabbet that housing is arranged in Thimble；Thimble includes the traveller being slidably arranged in bottom plate rabbet and is coaxially fixed on the top pillar of traveller upper end, the cross of top pillar Cross sectional shape is in major arc arch；The top of forming core is equipped with the type chamber for making taper roller with punching press with upper mold cooperation, at The bottom of type core is equipped with and is connected to type chamber and penetrates the intercommunicating pore in type chamber to eject taper roller for top pillar, intercommunicating pore Cross section is circle；The first row stomata being connected with intercommunicating pore is offered on the side wall of forming core, is opened on the side wall of housing Equipped with the second row stomata communicated with first row stomata, it is equipped with guide spring jointly in first row stomata and second row stomata, It is equipped with the hollow plug for avoiding guide spring from deviating from the orifice position of second row stomata, steel is equipped in first row stomata Ball, steel ball are pressed on the planar side of top pillar by the elastic force of guide spring.

Preferably, the shape of top notch is cylindrical shape, and the shape of forming core is taper type, in forming core and top notch Between be also fitted with transition sleeve, the outer rim shape of transition sleeve is corresponding with top notch, the inner edge shape of transition sleeve be with The corresponding taper of forming core.

Preferably, the third gas vent of connection first row stomata and second row stomata is offered on the side wall of transition sleeve.

Preferably, it is fitted on top pillar for the upper end of top pillar to be pulled in the reset spring in type chamber, resets bullet The upper end of spring and the lower end surface of forming core are fixed, and the upper surface of reset spring lower end and traveller is fixed.

Preferably, positive stop lug boss is equipped in the lower end of traveller.

Beneficial effect

The cross section of top pillar in the utility model on thimble be major arc arch, the intercommunicating pore being slidably matched for it is transversal Face is circle, so that the channel being discharged from gas vent for the air in type chamber is formed between top pillar and intercommunicating pore, so that punching Pressing through the air in the medium-sized chamber of journey can be discharged eventually by hollow plug, on the one hand avoid pressure-air rushing for forming core It hits, avoids its craze and transfiguration, prolong its service life；On the other hand high pressure draught is also avoided for taper roller lower end surface Punching press hinders, and avoids the flaw of taper roller lower end surface produced.

The planar side that steel ball in the utility model is pressed on top pillar by being oriented to lantern ring, can play the work of guiding thimble With, avoid top pillar in punching course generate twisting and caused by molding taper roller lower end flatness phenomenon not up to standard.

The taper roller lower end stamped out through the utility model position corresponding with air duct will form tiny protrusion, should Protrusion does not exceed the 3% of taper roller lower end surface area in the case where top pillar plane side area rational deployment, not but not The final product quality of taper roller is impacted, and is capable of forming the backtracking label of taper roller punching production quality, is being sent out After the quality problems of existing stamping products, stamping die can be checked by observing the backtracking of the relative position between the protrusion and mass defect Have and make corresponding adjustment, is conducive to control of product quality.

Detailed description of the invention

Fig. 1 is coupled structural schematic diagram for the utility model；

Fig. 2 is the schematic perspective view of top pillar part in the utility model；

Fig. 3 is schematic diagram of the utility model under punching production state；

Fig. 4 is sectional view along A-A in Fig. 3；

Fig. 5 is status diagram of the utility model after punching press；

Marked in the figure: 1, housing, 101, top notch, 102, bottom plate rabbet, 103, second row stomata, 2, transition sleeve, 201, third gas vent, 3, forming core, 301, type chamber, 302, intercommunicating pore, 303, first row stomata, 4, steel ball, 5, guide spring, 6, hollow plug, 7, reset spring, 8, thimble, 801, top pillar, 802, traveller, 803, positive stop lug boss.

Specific embodiment

As shown in Fig. 1, Fig. 3 and Fig. 5, a kind of taper roller combined down molds of band exhaust of the utility model, including cylinder The housing 1 of shape, the forming core 3 that 1 top of housing is set and the thimble 8 that 1 bottom of housing is set.The top of forming core 3 has There is type chamber 301 identical with taper roller appearance profile, and can cooperate with upper mold and prepare taper roller in a manner of punching press.Thimble 8 from type chamber 301 for ejecting it after taper roller punch forming, collects and subsequent punching production convenient for product.

Columnar top notch 101 is coaxially offered at the top of housing 1, forming core 3 is in taper type, in forming core 3 Transition sleeve 2 is additionally provided between top notch 101.The shape of transition sleeve 2 be cylinder, the inside of transition sleeve 2 offer with The corresponding bellmouth of 3 shape of forming core, forming core 3 are fitted in transition sleeve 2 with wedge structure, are improved forming core 3 and are existed Stability in punching production.

The intercommunicating pore 302 being connected to type chamber 301 is additionally provided in the lower part of forming core 3, the cross-sectional shape of intercommunicating pore 302 is The lower edge of circle, intercommunicating pore 302 is concordant with the lower edge of forming core 3, the upper end for thimble 8 slide and penetrate in type chamber 301 with The taper roller for completing punching press is ejected from type chamber 301.

Columnar bottom plate rabbet 102 is coaxially offered at the top of housing 1, bottom plate rabbet 102 and top notch 101 are total With the length direction through housing 1, and it is connected to bottom plate rabbet 102 and the lower end of intercommunicating pore 302.The thimble 8 of the utility model Including be slidably arranged in bottom plate rabbet 102 traveller 802, be coaxially fixed on the top pillar 801 of 802 upper end of traveller and coaxial It is fixed on the positive stop lug boss 803 of 802 lower end of traveller, top pillar 801 therein is slidably arranged in intercommunicating pore 302.In top pillar 801 On be fitted with for the upper end of top pillar 801 to be pulled in the reset spring 7 in type chamber 301, the upper end of reset spring 7 and molding The lower end surface of core 3 is fixed, and 7 lower end of reset spring and the upper surface of traveller 802 are fixed.As shown in Figures 2 and 4, intercommunicating pore 302 Cross section is circle, and the cross-sectional shape of top pillar 801 is in major arc arch, so in 802 side plane side of traveller and intercommunicating pore 302 Inner wall between form air duct, the air in the medium-sized chamber 301 of punching course can be discharged by the air duct.For the ease of The shape for illustrating traveller 802, the area of planar side is larger on the traveller 802 shown in Fig. 2 and Fig. 4.In actual production, sliding Planar side on column 802 can be small as far as possible, in the case where meeting exhaust demand, so that the protrusion of molding taper roller lower end It is as small as possible, and control the 3% or less of taper roller lower end area.

The first row stomata 303 being connected with intercommunicating pore 302 is offered on the side wall of forming core 3, on the side wall of housing 1 Second row stomata 103 is offered, connection first row stomata 303 and second row stomata 103 are offered on the side wall of transition sleeve 2 Third gas vent 201.Air in air duct can pass sequentially through first row stomata 303, third gas vent 201 and second row Stomata 103 is discharged.To improve the service life of forming core 3 in the utility model, the end face quality of product is improved.

It is equipped with guide spring 5 jointly in first row stomata 303, second row stomata 103 and third gas vent 201.? The orifice position of second row stomata 103 is equipped with the hollow plug 6 for avoiding guide spring 5 from deviating from, and the air-flow of discharge can be by sky Heart plug 6 is discharged.Hollow plug 6 itself offers external screw thread, offers in second row stomata 103 and cooperates for hollow plug 6 The internal screw thread of installation.Steel ball 4 is equipped in first row stomata 303, steel ball 4 is pressed on top pillar 801 by the elastic force of guide spring 5 Planar side.It can play the role of leading to thimble 8 by pressure of the guide spring 5 for steel ball 4, avoid top pillar in punching course 801 generate twisting and caused by molding taper roller lower end flatness phenomenon not up to standard.

The application of the utility model is as depicted in figs. 3 and 5.Fig. 5 is the initial state of punching production, the lower end of housing 1 by Horizontal table support, the position that thimble 8 is corresponded on horizontal table invaginate to form the support station of thimble 8.Top in thimble 8 Column 801 partially enters in type chamber 301 under the pulling force effect of reset spring 7.Will in green body merging type chamber 301 by upper mold into After row punching press, there is green body to push thimble 8 to state as shown in Figure 3.The positive stop lug boss 803 of 8 lower end of thimble and above-mentioned top at this time Needle 8 supports station to touch and can not continue to move down, and the upper edge of top pillar 801 it is concordant with 301 lower edge of type chamber and constitute taper roller at The bottom of chamber of type type chamber 301.Green body forms under punching press effect, and air is by air duct and eventually by hollow in type chamber 301 Plug 6 is discharged.Upper mold is removed after punch forming, and top pillar 801 heads into type chamber 301 under the effect of reset spring 7 and will be at Taper roller ejection after type, makes the utility model go successively to standby mode as shown in Figure 5.

Claims (5)

1. a kind of taper roller combined down molds of band exhaust, it is characterised in that: including housing (1), be arranged at the top of housing (1) The thimble (8) of forming core (3) and setting in the bottom plate rabbet (102) of housing (1) in notch (101)；Thimble (8) includes The traveller (802) that is slidably arranged in bottom plate rabbet (102) and the top pillar (801) for being coaxially fixed on traveller (802) upper end, top The cross-sectional shape of column (801) is in major arc arch；The top of forming core (3), which is equipped with, makes circular cone for cooperating with upper mold with punching press The type chamber (301) of roller, the bottom of forming core (3), which is equipped with, to be connected to type chamber (301) and penetrates type chamber for top pillar (801) (301) intercommunicating pore (302) in eject taper roller, the cross section of intercommunicating pore (302) are circle；In forming core (3) The first row stomata (303) being connected with intercommunicating pore (302) is offered on side wall, is offered on the side wall of housing (1) and first It is equipped with jointly in the second row stomata (103) that gas vent (303) communicates, first row stomata (303) and second row stomata (103) Guide spring (5) is equipped with the hollow plug for avoiding guide spring (5) from deviating from the orifice position of second row stomata (103) (6), steel ball (4) are equipped in first row stomata (303), steel ball (4) is pressed on top pillar by the elastic force of guide spring (5) (801) planar side.

2. a kind of taper roller combined down molds of band exhaust according to claim 1, it is characterised in that: top notch (101) shape is cylindrical shape, and the shape of forming core (3) is taper type, between forming core (3) and top notch (101) also It is fitted with transition sleeve (2), the outer rim shape of transition sleeve (2) is corresponding with top notch (101), the inner edge of transition sleeve (2) Shape is taper corresponding with forming core (3).

3. a kind of taper roller combined down molds of band exhaust according to claim 2, it is characterised in that: in transition sleeve (2) Side wall on offer connection first row stomata (303) and second row stomata (103) third gas vent (201).

4. a kind of taper roller combined down molds of band exhaust according to claim 1, it is characterised in that: in top pillar (801) On be fitted with for the upper end of top pillar (801) to pull in the reset spring (7) in type chamber (301), reset spring (7) it is upper It holds and is fixed with the lower end surface of forming core (3), reset spring (7) lower end and the upper surface of traveller (802) are fixed.

5. a kind of taper roller combined down molds of band exhaust according to claim 4, it is characterised in that: in traveller (802) Lower end be equipped with positive stop lug boss (803).