CN211839819U - Positioning and unloading structure for stretching housing and pneumatic punch - Google Patents

Abstract

The utility model discloses a positioning and unloading structure for stretching a housing and a pneumatic punch press, the structure comprises an upper die part, a lower die part and a pull rod (8), wherein the upper die part comprises a limit column (9), a stretching insert (18), an ejector (19) and a pressure mechanism for providing pressure for the ejector (19); the lower die part comprises a power mechanism, a positioning ring (22) and a stretching male die (24), and the positioning ring (22) is in clearance fit with the periphery of the stretching male die (24) through a positioning ring base plate (4) and a positioning ring fixing plate (5); the positioning ring (22) moves along the vertical direction under the action of the power mechanism; one end of the pull rod (8) is fixed on the upper die part, and the other end of the pull rod is connected with the positioning ring base plate (4). The utility model discloses guaranteed that treat tensile housing position at tensile in-process and do not take place the skew, the part after the tensile can not appear wrinkling, send out numb, draw quality problems such as split.

Description

Positioning and unloading structure for stretching housing and pneumatic punch

Technical Field

The utility model relates to a tensile location of housing, unload a structure and pneumatic punch press.

Background

The cover is an important part of the relay, as shown in fig. 1 and 2. The existing stretching die structure does not adopt blank holder positioning, and because the thickness of a housing material is within the range of 0.2-0.3, the blank holder positioning and stretching are easy to break, the existing stretching die adopts a structure that a stretching male die is directly positioned; the piece unloading device adopts a crow bar type; the ejector is not able to provide pressure on the top of the shell when the mold is in action, as shown in fig. 3 and 4. The existing mould structure has the following disadvantages: the positioning is unreliable, and the qualified rate of the produced parts is low; the crowbar type unloading device increases the labor intensity of operators and has low production efficiency; the top of the produced part is uneven, the subsequent leveling procedure is added, the process route is long, and the production period is long. The existing mould can not meet the requirements of high-quality and fast-paced production at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can treat tensile housing and carry out accurate location, guarantee to treat tensile housing at tensile in-process and do not take place the skew, the housing after the tensile can not appear wrinkling, send out the numb, draw the tensile location of housing of quality problems such as split, unload a structure.

In order to realize the purpose of the utility model, the positioning and unloading structure for stretching the housing provided herein comprises an upper die part, a lower die part and a pull rod, wherein the upper die part comprises a limit column, a stretching insert, an ejector and a pressure mechanism for providing pressure for the ejector; the lower die part comprises a power mechanism, a positioning ring and a stretching male die, and the positioning ring is in clearance fit with the periphery of the stretching male die through a positioning ring base plate and a positioning ring fixing plate; the positioning ring moves along the vertical direction under the action of the power mechanism; one end of the pull rod is fixed on the upper die part, and the other end of the pull rod is connected with the positioning ring base plate.

Further, the pressure mechanism comprises a screw plug and an elastic component, one end of the screw plug is connected with one end of the elastic component, and the other end of the screw plug is used for applying pressure; the other end of the elastic component is connected to the top end of the ejector.

Further, the elastic component is a flat wire spiral spring.

Furthermore, the pull rod is connected with the positioning ring base plate through a nut and a polyurethane washer. The polyurethane gasket is arranged to ensure that the pull force of each pull rod is uniform when the pull rod drives the positioning ring gasket to move upwards.

Furthermore, the upper die part also comprises a concave die plate, a concave die base plate, an upper support, a punch handle and a concave die insert.

Furthermore, the lower die part also comprises a base, a male die base plate and a male die fixing plate, the male die base plate and the male die fixing plate are sequentially arranged on the base, and the stretching male die penetrates through the male die base plate and the male die fixing plate and is arranged in the base through a second screw rod; a first guide pillar and a guide sleeve are arranged between the base and the upper support, one end of the first guide pillar is slidably arranged in the guide sleeve, the other end of the first guide pillar is arranged on the base, and the guide sleeve is arranged on the upper support.

Furthermore, a second guide pillar is arranged between the positioning ring fixing plate and the male die fixing plate. A guide pillar is arranged between the locating ring fixing plate and the male die fixing plate, so that the locating ring is not in contact with the stretching male die when the locating ring fixing plate moves up and down.

Another object of the present invention is to provide a pneumatic punch press for positioning and unloading a housing, wherein the slider of the pneumatic punch press is stationary and the crankshaft of the pneumatic punch press is located at 2 o' clock.

The utility model has the advantages that: the utility model adopts the positioning ring to position the housing to be stretched, the positioning is accurate, the position of the housing to be stretched is ensured not to deviate in the stretching process, the stretched parts have no quality problems such as wrinkling, scutching and pulling crack, and the production qualification rate is improved; the pull rod drives the positioning ring to move upwards, and the function of automatic part unloading can be realized after stretching forming, so that the production efficiency is improved; the flat wire spiral spring provides continuous pressure for the ejector, and in the stretching process of the housing, the ejector provides continuously increased pressure for the top of the housing, so that the top of the housing is smooth after the housing to be stretched is stretched, a leveling procedure is not required to be added subsequently, the process route of the housing is optimized, and the production period is shortened.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of a housing prior to stretching;

FIG. 2 is a schematic view of the housing after stretching;

FIG. 3 is a schematic structural view of a conventional drawing die for housing;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic structural view of a housing drawing die of the present invention;

FIG. 6 is a top view of FIG. 5;

fig. 7 is a schematic view of the stretching process of the utility model housing 1;

FIG. 8 is an enlarged view of a portion of FIG. 7;

fig. 9 is a schematic view of the stretching process of the housing of the present invention 2;

FIG. 10 is an enlarged view of a portion of FIG. 9;

fig. 11 is a schematic view 3 of the stretching process of the housing of the present invention;

FIG. 12 is an enlarged view of a portion of FIG. 11;

in the drawings: 1. the drawing die comprises a base, 2 parts of a punch backing plate, 3 parts of a punch fixing plate, 4 parts of a locating ring backing plate, 5 parts of a locating ring fixing plate, 6 parts of a second nut, 7 parts of a polyurethane backing plate, 8 parts of a pull rod, 9 parts of a limiting column, 10 parts of a concave die plate, 11 parts of a concave die backing plate, 12 parts of an upper support, 13 parts of a punch handle, 14 parts of a screw plug, 15 parts of a flat wire spiral spring, 16 parts of a small backing plate, 17 parts of a concave die insert, 18 parts of a drawing insert, 19 parts of an ejector, 20 parts of a first guide pillar, 21 parts of a guide sleeve, 22 parts of a locating ring, 23 parts of a second guide pillar, 24 parts of a drawing punch, 25 parts of two screws, 26 parts of a second screw rod, 27 parts of a first clamping plate, 28 parts of a spring, 29 parts of a first nut, 30 parts of.

Detailed Description

Exemplary embodiments will now be described more fully with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. In the drawings, the size of some of the elements may be exaggerated or distorted for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, etc. In other instances, well-known structures, methods, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Example one

Fig. 5 and 6 show an exemplary structure of the positioning and removing structure of the stretching of the cover. In the embodiment, the positioning and unloading structure for stretching the housing comprises an upper die part, a lower die part and a pull rod, wherein the upper die part comprises an upper support 12, a punch handle 13, a pressure mechanism, a limiting column 9, a die backing plate 11, a die plate 10, a die insert 17, a stretching insert 18 and an ejector 19; the punch handle 13 is arranged on the upper support 12 and is used for connecting with external equipment; the pressure mechanism is arranged in a punch handle 13, a concave die plate 10 and a concave die cushion plate 11 are arranged on an upper support 12 through screws, a concave die insert 17 and a stretching insert 18 are arranged on the concave die plate 10, a limiting column 9 is arranged on the lower end face of the concave die plate 10, one end of an ejector 19 is connected to the pressure mechanism, and the other end of the ejector moves downwards along the vertical direction when the pressure mechanism provides pressure.

The lower die part comprises a base 1, a male die base plate 2, a male die fixing plate 3, a positioning ring 22, a stretching male die 24 and a power mechanism, wherein the male die fixing plate 3 is arranged on the base 1 through the male die base plate 2, and the stretching male die 24 penetrates through the male die base plate 2 and the male die fixing plate 3 and is arranged in the base 1 through a second screw 26; the positioning ring 22 is in clearance fit with the periphery of the stretching male die 24 through the positioning ring backing plate 4 and the positioning ring fixing plate 5; the positioning ring 22 moves along the vertical direction under the action of the power mechanism; the clearance space between the retainer 22 and the drawing punch 24 may be any, and a 0.5 clearance fit is used herein.

One end of the pull rod 8 is fixed on the concave mould plate 10 of the upper mould part, the other end of the pull rod is connected with the positioning ring backing plate 4, and the upper mould part moves upwards to pull the pull rod to drive the positioning ring backing plate to move upwards.

The concave template 10 is fixed with the limiting column 9, when the concave template 10 moves downwards, the limiting column 9 is contacted with the positioning ring fixing plate 5 when the concave template 10 is contacted with the housing 32 to be stretched, the concave template 10 continues to move downwards, and the limiting column 9 pushes the positioning ring fixing plate 5 to move downwards so as to eliminate the blank holder force generated by the positioning ring 22 on the housing 32 to be stretched; the upper end surface of the ejector 19 is provided with a pressure mechanism which provides adjustable continuous pressure for the ejector 19.

Example two

The positioning and part-removing structure for stretching the housing provided by the embodiment comprises all technical characteristics of the positioning and part-removing structure for stretching the housing provided by the embodiment, and further comprises a first guide pillar 20 and a guide sleeve 21, wherein the first guide pillar 20 and the guide sleeve 21 are installed between the base 1 and the upper support 12, one end of the first guide pillar 20 is slidably installed in the guide sleeve 21, the other end of the first guide pillar is installed on the base 1, and the guide sleeve 21 is installed on the upper support 12.

The second guide post 23 is provided between the retainer plate 5 and the punch retainer 3 described in the first and second embodiments, and the second guide post 23 prevents the retainer 22 from contacting the drawing punch 24 when the retainer plate 5 moves up and down.

Any one of the pressure mechanisms described in the first and second embodiments may be adopted, and the pressure mechanism used here includes a screw plug 14 and an elastic member 15, one end of the screw plug 14 is connected to one end of the elastic member 15, and the other end of the screw plug 14 is used for applying pressure; the other end of the elastic member 15 is connected to the tip of the ejector 19.

The screw plug 14 and the elastic component 15 provide adjustable continuous pressure for the ejector 19; the elastic component 15 can be any spring, a flat wire spiral spring is adopted to provide continuous pressure for the ejector 19, and the ejector 19 provides continuously increased pressure for the top of the housing 19 to be stretched in the stretching process of the housing 32 to be stretched, so that the top of the housing is ensured to be flat after the housing to be stretched is stretched.

A small pad 16 is installed between the elastic member 15 and the ejector 19.

Any one of the power mechanisms described in the first and second embodiments may be adopted, and the power mechanism adopted herein includes a first clamping plate 27, a second clamping plate 30, a spring 28, a first nut 29, two screw sections 25 and a first screw 31, wherein the spring 28 is installed between the first clamping plate 27 and the second clamping plate 30, the first nut 29 is screwed on the first screw 31, and the first screw 31 is connected to the bottom end face of the first clamping plate 27; one end of each screw is arranged on the second clamping plate 30, and the other end of each screw is connected with the positioning ring backing plate 4.

Adjusting the first nut 29 causes an upward force to be applied to the first jaw 27, causing the spring 28 mounted between the first jaw 27 and the second jaw 30, the spring 28 causing an upward pushing force to move the second jaw 30 and the two sets of screws 25 upward, thereby urging the cage plate 4 upward to move the cage 22 upward.

The tie rod 8 described in the first and second embodiments is connected to the retainer plate 4 via the second nut 6 and the urethane washer 7.

The utility model provides a tensile location of housing, unload a structure in the use need install it on outside power equipment, provide power through outside power equipment and make the mould part motion, accomplish tensile, unload an operation. The external power equipment can adopt a pneumatic punch press known in the art, when the pneumatic punch press is used for providing power, and when a sliding block of the pneumatic punch press is static, a crankshaft of the pneumatic punch press is required to be located at a 2 o ' clock position, because when the sliding block of the pneumatic punch press is located at a 12 o ' clock position, the sliding block is located at a top dead center, an operator needs to adjust a die to a state that a pull rod 8 pulls a positioning ring 22 to be higher than a stretching male die 24, as shown in fig. 11, the automatic part unloading function can be realized, but if the sliding block is static at the moment, the positioning ring cannot position a housing in the next working cycle, the crankshaft of the pneumatic punch press needs to continuously rotate to the 2 o ' clock position, the sliding block moves downwards, the positioning ring 22 moves downwards to an initial position by self gravity, as shown in fig. 7, the positioning.

The utility model provides a tensile location of housing, the working process who unloads a structure as follows:

mold initial position, i.e., the position where the lock ring 22 is positioned: the upper die part of the die is fixed on a slide block of the pneumatic punching machine, and the lower die part of the die is fixed on a workbench of the pneumatic punching machine. Firstly, an operator loosens the second nut 6 to disable the pull rod 8, and simultaneously adjusts the first nut 29 to push the first clamping plate 27, the spring 28, the second clamping plate 30, the two sections of screws 25, the retainer plate 4, the retainer fixing plate 5 and the retainer 22 to be about 3mm higher than the stretching male die 24, as shown in fig. 7 and 8; in this state, the stretching male die 24 positions the top of the housing 32 to be stretched, and the positioning ring 22 positions the inner wall of the housing 32 to be stretched, so that the housing 32 to be stretched is accurately positioned; the second nut 6 is then adjusted to push the urethane washer 7 to a position approximately 1mm below the retainer washer 4 because the tie rod is only active at the time of part removal.

Limiting column working position: under the action of a slide block of a pneumatic punch press, the upper die part moves downwards, when the stretching insert 18 just contacts the to-be-stretched encloser 32, the limiting column 9 starts to contact the positioning ring fixing plate 5, as shown in fig. 9 and 10, at the moment, the ejector 19 provides continuously increased pressure for the top of the to-be-stretched encloser 32 under the action of the flat wire spiral spring, and the top of the stretched to-be-stretched encloser 32 is ensured to be flat; the upper die part continues to move downwards, the stretching insert 18 begins to stretch the to-be-stretched encloser 32, meanwhile, the limiting column 9 pushes the locating ring fixing plate 5 to move downwards, and as the locating ring 22 is installed on the locating ring fixing plate 5, the locating ring 22 moves downwards simultaneously when the locating ring locating plate 5 moves downwards, so that the blank holder force generated by the locating ring 22 on the to-be-stretched encloser 32 during stretching is eliminated, and the to-be-stretched encloser 32 cannot have quality problems of wrinkling, scutching, pulling cracking and the like after stretching.

The position of the positioning ring for unloading the workpiece is as follows: when the slide block of the pneumatic punching machine moves to the bottom dead center, namely the die finishes the stretching action, at the moment, the to-be-stretched housing 32 is tightly covered on the stretching male die 24, the slide block continues to move to be changed into an upward movement, namely the upper die part of the die moves upward, the pull rod 8, the pull nut 6, the polyurethane gasket 7, the positioning ring gasket 4, the positioning ring fixing plate 5 and the positioning ring 22 move upward, the positioning ring 22 pushes the housing to start unloading, and when the slide block moves to the top dead center, namely the positioning ring 22 is pulled to be higher than the stretching male die 24 by about 1mm, as shown in fig. 11 and fig. 12, the die finishes automatic unloading.

The cam of the pneumatic punch continues to act to the 2 o' clock position and stops, so that the slide block continues to act downwards, and when the positioning ring part returns to the initial position under the action of self gravity, the slide block is static, and as shown in fig. 7 and 8, a work cycle is completed.

The present disclosure has been described in terms of the above-described embodiments, which are merely exemplary of the implementations of the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the disclosure. Rather, variations and modifications are possible within the spirit and scope of the disclosure, and these are all within the scope of the disclosure.

Claims (9)

1. The utility model provides a tensile location of housing, unloads a structure which characterized in that: the structure comprises an upper die part, a lower die part and a pull rod (8), wherein the upper die part comprises a limiting column (9), a stretching insert (18), an ejector (19) and a pressure mechanism for providing pressure for the ejector (19); the lower die part comprises a power mechanism, a positioning ring (22) and a stretching male die (24), and the positioning ring (22) is in clearance fit with the periphery of the stretching male die (24) through a positioning ring base plate (4) and a positioning ring fixing plate (5); the positioning ring (22) moves along the vertical direction under the action of the power mechanism; one end of the pull rod (8) is fixed on the upper die part, and the other end of the pull rod is connected with the positioning ring base plate (4).

2. A tensile positioning and removing structure for a housing according to claim 1, wherein: the pressure mechanism comprises a screw plug (14) and an elastic component (15), one end of the screw plug (14) is connected with one end of the elastic component (15), and the other end of the screw plug (14) is used for applying pressure; the other end of the elastic component (15) is connected with the top end of the ejector (19).

3. A positioning and unloading structure for stretching a casing according to claim 2, wherein: the elastic component (15) is a flat wire spiral spring.

4. A tensile positioning and removing structure for a housing according to claim 1, wherein: the pull rod (8) is connected with the positioning ring base plate (4) through a second nut (6) and a polyurethane base plate (7).

5. A tensile positioning and removing structure for a housing according to claim 1, wherein: the upper die part also comprises a concave die plate (10), a concave die base plate (11), an upper support (12), a punch handle (13) and a concave die insert (17).

6. A positioning and unloading structure for stretching of casings, according to claim 5, characterized in that: the lower die part further comprises a base (1), a male die base plate (2) and a male die fixing plate (3), the male die base plate (2) and the male die fixing plate (3) are sequentially mounted on the base (1), and a stretching male die (24) penetrates through the male die base plate (2) and the male die fixing plate (3) and is mounted in the base (1) through a second screw (26); a first guide post (20) and a guide sleeve (21) are arranged between the base (1) and the upper support (12), one end of the first guide post (20) is slidably arranged in the guide sleeve (21), the other end of the first guide post is arranged on the base (1), and the guide sleeve (21) is arranged on the upper support (12).

7. A tensile positioning and removing structure for a housing according to claim 1, wherein: the lower die part further comprises a base (1), a male die base plate (2) and a male die fixing plate (3), the male die base plate (2) and the male die fixing plate (3) are sequentially mounted on the base (1), and a stretching male die (24) penetrates through the male die base plate (2) and the male die fixing plate (3) and is mounted in the base (1) through a second screw (26).

8. Positioning and unloading structure for stretching of enclosures according to claim 6 or 7, characterized in that: and a second guide pillar (23) is arranged between the positioning ring fixing plate (5) and the male die fixing plate (3).

9. A pneumatic punching machine is characterized in that: the pneumatic punching machine is provided with a positioning and unloading structure for stretching the housing as claimed in any one of claims 1 to 8, and when a slide block of the pneumatic punching machine is static, a crankshaft of the pneumatic punching machine is positioned at 2 o' clock.

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