CN212551358U - Closing-up die and processing tool thereof - Google Patents

Abstract

The utility model relates to the technical field of mold forming, in particular to a closing-in mold and a processing tool thereof, wherein the closing-in mold comprises an upper mold, a lower mold and an upper driving part; the upper die comprises an upper die base and a closing mechanism movably connected on the upper die base; the closing mechanism is annular, and the annular shape can stretch out and draw back; the lower die is used for placing an end cover; the upper driving part is used for driving the closing mechanism to contract so as to extrude, close and mold the periphery of the end cover in the annular inner part of the closing mechanism. The utility model discloses a mould can once extrude the shaping of binding off, and binding off size precision is high, does not need adjustment many times and stable, and the complicated binding off shape of shaping improves production efficiency, and different binding off sizes can be realized to one set of mould, need not to change the mould, reduces and occupies the factory building space.

Description

Closing-up die and processing tool thereof

Technical Field

The utility model belongs to the technical field of the mould shaping technique and specifically relates to a binding off mould and machining tool thereof is related to.

Background

The large fuel tank for automobile consists of end cap, cylinder and partition board. The oil tank end cover can also be called an end socket, and plays a role in sealing two ends of the oil tank cylinder body so as to prevent oil leakage. In order to be assembled with the cylinder, the part of the end cover matched with the cylinder needs to be smaller than the inner cavity of the cylinder, but the shape of the end cover is consistent with that of the cylinder. The partition board is arranged in the cylinder body and plays a role of supporting the cylinder body.

In the prior art, the closing-in of the end cover is realized by a special device through roll forming, namely, the edge of the end cover is repeatedly roll formed.

The necking-in devices of the prior art have the following drawbacks:

1. the rolling cannot be formed at one time, the closing-up size precision is poor, and the rolling needs to be adjusted for many times and is unstable;

2. complex shapes can not be rolled, and the production efficiency is low;

3. different closing-in equipment is required to be used for closing-in different sizes, and the closing-in equipment occupies a larger workshop space.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a binding off mould and machining tool thereof to solve the above-mentioned technical problem who exists among the prior art.

In order to solve the technical problem, the utility model provides a closing-up die, which comprises an upper die, a lower die and an upper driving part; the upper die comprises an upper die base and a closing mechanism movably connected to the upper die base; the closing mechanism is annular, and the annular shape can stretch out and draw back; the lower die is used for placing an end cover; the upper driving part is used for driving the closing mechanism to contract so as to extrude, close and mold the periphery of the end cover in the annular inner part of the closing mechanism.

Further, the closing mechanism comprises a plurality of upper forming modules which are arranged in a ring shape; the upper driving part is used for driving the upper forming module to move towards the annular inner part of the upper forming module so as to enable the annular of the closing mechanism to shrink.

Further, the lower die comprises a lower die seat; the upper driving part is an upper guide plate which is arranged on the lower die holder and is annularly arranged; the end cover is placed in the ring formed by the upper guide plate; the upper guide plate inclines towards the direction far away from the end cover; when the upper forming module is contacted with the upper guide plate in the downward moving process, the upper guide plate can drive the upper forming module to move towards the annular inner direction of the upper forming module and extrude, close and form the periphery of the end cover.

Furthermore, the bottom of the upper forming module is a bottom plate which is obliquely arranged, and the bottom plate is parallel to the upper guide plate and is matched with the upper guide plate to slide.

Furthermore, the upper guide plate comprises a plurality of upper sub guide plates which are annularly arranged, and the plurality of upper sub guide plates and the plurality of upper forming modules are arranged in a one-to-one up-and-down corresponding manner; the upper sub guide plate inclines towards the direction far away from the end cover; when the upper forming module is contacted with the upper sub-guide plate in the downward moving process, the upper sub-guide plate can drive the upper forming module to move towards the annular inner direction of the upper forming module and extrude, close and form the periphery of the end cover.

Furthermore, the upper die base is provided with a slide way which is obliquely arranged towards the end cover, and the upper forming module is arranged on the slide way in a sliding manner.

Furthermore, an upper sliding plate and a lower sliding plate which are arranged in parallel at intervals are arranged on the upper die base, the upper sliding plate and the lower sliding plate are arranged in an inclined mode towards the end cover, and the slide way is formed between the upper sliding plate and the lower sliding plate.

Furthermore, the upper molding module comprises a molding installation part and a molding insert which is detachably and fixedly connected to the molding installation part; the shaping installation department with slide sliding connection, the shaping is inserted and is used for the inside end cover border extrusion binding off shaping of annular.

Further, the molding installation part comprises a sliding block and a connecting part; the sliding block is obliquely arranged between the upper sliding plate and the lower sliding plate and is parallel to the upper sliding plate; the upper end of the connecting part is fixed with the upper end of the sliding block, and the forming insert is fixed with the connecting part.

Further, the lower die further comprises a material supporting mechanism and a lower driving part; the material supporting mechanism comprises a material supporting body and a positioning mechanism movably connected to the material supporting body; the positioning mechanism is annular and the annular can stretch out and draw back; the lower driving part is used for driving the positioning mechanism to stretch and is abutted with the periphery of the end cover positioned outside the ring shape of the lower driving part so as to position the end cover.

Further, the positioning mechanism comprises a plurality of lower forming modules which are arranged in a ring shape; the lower driving part is used for driving the lower forming module to move towards the annular outer part of the lower forming module so as to enable the positioning mechanism to extend.

Further, the material supporting body is connected with a lower die seat of the lower die in a vertical sliding mode; the lower driving part is a lower guide plate which is arranged on the lower die holder and is annularly arranged; the ring formed by the lower guide plate is positioned in the periphery of the end cover; the lower guide plate is inclined towards the annular center direction of the lower guide plate; when the lower forming module is contacted with the lower guide plate in the downward moving process, the lower guide plate can drive the lower forming module to move towards the direction of the annular outer part enclosed by the lower forming module and position the end cover.

Further, the side part of the lower forming module is an obliquely arranged side plate, and the side plate is parallel to the lower guide plate and is matched with the lower guide plate to slide.

Furthermore, the lower guide plate comprises a plurality of lower sub guide plates which are annularly arranged, and the plurality of lower sub guide plates and the plurality of lower forming modules are arranged in a one-to-one correspondence manner; the lower sub guide plate is inclined towards the annular center of the lower guide plate; when the lower forming module is contacted with the lower sub-guide plate in the downward moving process, the lower sub-guide plate can drive the lower forming module to move towards the direction of the annular outer part enclosed by the lower forming module and position the end cover.

Furthermore, a reset mechanism is arranged on the lower die base and used for contracting and resetting the positioning mechanism.

Furthermore, an upper elastic piece is arranged on the upper die holder, and a lower elastic piece used for supporting the material supporting body is arranged on the die holder; in the process that the upper die holder moves downwards, the upper elastic piece is abutted to the material supporting body and pushes the material supporting body to move downwards, the lower forming module on the material supporting body starts to contact the lower guide plate, the lower forming module moves under the action of the lower guide plate and positions the end cover, and then the upper forming module starts to contact the upper guide plate and moves under the action of the upper guide plate and closes the end cover.

Further, the utility model also provides a processing tool, which comprises a stretching and squeezing integrated die and the closing-up die; the stretching and extruding integrated die comprises an upper die and a lower die; the upper die comprises a stretching female die; the lower die comprises a stretching male die and a lower extrusion block arranged around the periphery of the stretching male die; when the plate is contacted with the lower extrusion breaking block in the descending process, the plate can be extruded and broken by the lower port of the concave cavity of the stretching female die and the lower extrusion breaking block.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

the utility model provides a closing die has following advantage:

1. the one-time extrusion closing-in molding has high closing-in size precision, does not need to be adjusted for many times and is stable;

2. a complex closing-up shape can be formed, and the production efficiency is improved;

3. different closing sizes can be realized by one set of mould, the mould does not need to be changed, and the occupation of factory space is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a sectional view of a closing-up die provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a closing mechanism of a closing mold according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an upper mold provided in an embodiment of the present invention;

fig. 4 is a schematic structural view of a material supporting mechanism of the necking die according to the embodiment of the present invention;

fig. 5 is a schematic structural view of a lower mold of the necking mold according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the upper forming module and the upper and lower sliding plates provided by the embodiment of the present invention;

fig. 7 is a cross-sectional view of a stretch-squeeze integrated mold according to an embodiment of the present invention;

FIG. 8 is a partial component view of the upper die of the stretch-break unitary die shown in FIG. 7;

FIG. 9 is a schematic structural view of a lower mold of the stretch-break integrated mold shown in FIG. 7;

fig. 10 is a schematic structural view of a blank holder ring in the stretch-break integrated mold shown in fig. 7.

Reference numerals:

1, mounting a mold; 11-an upper die holder; 12-a closing mechanism; 121-upper forming module; 122-forming the mounting portion; 123-a forming insert; 124-a slide block; 125-a connecting part; 126-a bottom plate; 2-lower mould; 21-a lower die holder; 22-a retainer body; 23-a positioning mechanism; 231-lower molding module; 24-a limiting plate; 25-a reset mechanism; 3, an upper guide plate; 4-a lower guide plate; 5-pressing the material body; 6-nitrogen spring; 7-rectangular spring; 8, an upper sliding plate; 9-a lower sliding plate; 10, mounting a mold; 101-an upper die holder; 102-stretching the female die; 1021-an accommodation; 1022-stretching the insert; 1023-a cavity; 103-a withdrawing mechanism; 20-lower mould; 201-a lower die holder; 202-lower extrusion block; 203-stretching male die; 30-blank holder; 301-loop body; 302-blankholder insert.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

Example 1:

as shown in fig. 1 to fig. 3, the necking die provided in this embodiment includes an upper die 1, a lower die 2 and an upper driving portion; the upper die 1 comprises an upper die holder 11 and a closing mechanism 12 movably connected on the upper die holder 11; the closing-in mechanism 12 is annular and the annular shape can be stretched; the lower die 2 is used for placing an end cover; the upper driving part is used for driving the closing mechanism 12 to contract so as to extrude, close and mold the circumference of the end cover in the annular inner part of the closing mechanism. The ring shape of the closing-in mechanism 12 is capable of stretching and contracting, which means that the size of the ring shape can be increased or decreased (when the ring shape is circular, the diameter of the ring shape can be increased or decreased). When the end cover is located the annular inside of close-up mechanism 12 when using, utilize the upper drive portion with the 12 shrink of close-up mechanism, close-up mechanism 12 shrink promptly for the annular that the size diminishes, close-up mechanism 12 shrink in-process contacts and extrudes the end cover border with the end cover border and carries out the end cover binding off shaping, realize the one time binding off shaping, and binding off size precision is high, need not adjustment many times and stable, improve production efficiency, one set of binding off mould can be applicable to not unidimensional end cover binding off, it is little to occupy the factory building space.

The closing-in mechanism 12 may be a plurality of arc sections with two ends inserted into each other, and the arc sections may move toward the center of the ring or in the opposite direction, so that the size of the ring enclosed becomes smaller or larger, and the opening and closing-in mechanism 12 is extended and contracted.

As shown in fig. 2 and 3, preferably, the necking mechanism 12 includes a plurality of upper forming modules 121 arranged in a ring shape; the upper driving part is used for driving the upper forming module 121 to move towards the annular inner part thereof so as to shrink the annular shape of the closing-in mechanism 12. When in use, the upper driving part drives the plurality of upper forming modules 121 to move towards the end cover direction (at this time, the ring shape of the closing mechanism 12 shrinks), and contacts with the circumference of the end cover to press the end cover for closing. The closing-up mechanism 12 is arranged into a plurality of forming modules, so that the setting and the processing are convenient.

As shown in fig. 4 and 5, further, the lower mold 2 includes a lower die base 21; the upper driving part is an upper guide plate 3 which is arranged on the lower die holder 21 and is annularly arranged; the end cover is placed in the ring formed by the upper guide plate 3; the upper guide plate 3 inclines towards the direction far away from the end cover; when the upper forming module 121 contacts the upper guide plate 3 during the downward movement, the upper guide plate 3 can drive the upper forming module 121 to move towards the annular inner direction and press the end cover periphery to close and form. Since the upper guide plate 3 is inclined in a direction away from the end cap, that is, in a direction away from the closing-in mechanism 12 to form a circular center. The press drives the upper die 1 to move downwards, the upper forming module 121 gradually contacts the upper guide plate 3 on the lower die holder 21 in the downward moving process and abuts against the inclined surface of the upper guide plate 3, and under the action of the inclined surface, the upper forming module 121 starts to move towards the annular inner direction while descending (namely, the upper forming module 121 descends and moves horizontally), and gradually abuts against the end cover periphery to extrude the end cover periphery for forming. Preferably, when the upper forming module 121 descends to the lowest position of the upper guide plate 3, the upper forming module 121 and the end cover circumference realize the closest extrusion, and the closing-in forming is completed.

As shown in fig. 6, the bottom of the upper forming module 121 is preferably a base plate 126 that is disposed obliquely, and the base plate 126 is parallel to the upper guide plate 3 and slides in cooperation with the upper guide plate 3. In the descending process of the upper forming module 121, the bottom plate 126 gradually contacts with the upper guide plate 3 and moves downwards in cooperation with the upper guide plate 3, and the whole closing process can be stably carried out by the cooperation of the bottom plate and the upper guide plate.

Wherein, the upper guide plate 3 can be an integral annular plate, namely, the whole plate is in an inverted truncated cone shape, and the inclination of the upper guide plate 3 means that the side wall of the upper guide plate is inclined.

Preferably, the upper guide plate 3 comprises a plurality of upper sub guide plates which are annularly arranged, and the plurality of upper sub guide plates and the plurality of upper forming modules 121 are arranged in a one-to-one up-and-down correspondence; the upper sub guide plate inclines towards the direction far away from the end cover; when the upper forming module 121 contacts with the upper sub-guide during the downward movement, the upper sub-guide can drive the upper forming module 121 to move towards the annular inner direction and press the periphery of the end cover to close up and form. That is, the upper guide plate 3 includes a plurality of upper sub-guide plates, and each upper sub-guide plate is respectively matched with one upper forming module 121 to drive the upper forming module 121 to move, so that the processing is convenient to arrange.

Further, the upper die base 11 has a slide way inclined toward the end cover, and the upper forming module 121 is slidably disposed on the slide way. Since the upper forming module 121 performs horizontal movement under the action of the upper guide plate 3, the slide rail can play a role of guiding the movement of the upper forming module 121, so that the movement process is stable.

Wherein, a hole can be arranged on the upper die base 11, the inner cavity of the hole is the slideway, and the forming module penetrates through the hole and slides in the hole.

As shown in fig. 6, preferably, the upper die base 11 is provided with an upper sliding plate 8 and a lower sliding plate 9 which are arranged in parallel and spaced up and down, the upper sliding plate 8 and the lower sliding plate 9 are arranged obliquely towards the end cover, and a slideway is formed between the upper sliding plate 8 and the lower sliding plate 9. The upper slide plate 8 and the lower slide plate 9 play a guiding role at the same time, and the friction force is also reduced.

As shown in fig. 6, further, the upper molding module 121 includes a molding mounting portion 122 and a molding insert 123 detachably and fixedly connected to the molding mounting portion 122; the forming installation part 122 is connected with the slideway in a sliding mode, and the forming insert 123 is used for extruding, closing and forming the periphery of the end cover in the annular inner part. The user can choose to install the forming insert 123 with different shapes to realize different closing-in shapes of the end cover, can realize closing-in with complex shapes, and improves the applicability.

As shown in fig. 6, further, the mold mounting portion 122 includes a slider 124 and a connecting portion 125; the slide block 124 is obliquely arranged between the upper slide plate 8 and the lower slide plate 9 and is parallel to the upper slide plate 8; the upper end of the connecting portion 125 is fixed to the upper end of the slider 124, and the forming insert 123 is fixed to the connecting portion 125. That is, the upper forming module 121 is hung on the upper die base 11 by the cooperation of the sliding block 124 and the upper and lower sliding plates 9, and can move in the channel between the upper and lower sliding plates 9.

As shown in fig. 4 and 5, the lower mold 2 further includes a material supporting mechanism and a lower driving portion; the material supporting mechanism comprises a material supporting body 22 and a positioning mechanism 23 movably connected to the material supporting body 22; the positioning mechanism 23 is annular and the annular shape can be stretched; the lower driving part is used for driving the positioning mechanism 23 to stretch and is abutted with the circumference of the end cover positioned at the annular outer part of the lower driving part so as to position the end cover. When the end cover positioning device is used, the end cover is placed on the material supporting body 22, the lower driving part drives the positioning mechanism 23 to stretch out and abut against the inner wall at the end opening of the end cover, the end cover is positioned after the end opening of the end cover is gradually expanded, and the end cover is positioned on the lower die 2.

The positioning mechanism 23 may be a plurality of arc segments with two ends inserted into each other, and the arc segments may move toward the center of the ring or in the opposite direction, so that the size of the ring formed by the arc segments is reduced or increased, and the positioning mechanism 23 is extended or contracted.

As shown in fig. 4, preferably, the positioning mechanism 23 includes a plurality of lower molding modules 231 arranged in a ring shape; the lower driving part is used to drive the lower molding block 231 to move toward the annular outer portion thereof to extend the positioning mechanism 23. When in use, the lower driving part drives the plurality of lower forming modules 231 to move towards the direction away from the center of the end cover (at this time, the ring of the closing-in mechanism 12 is expanded), and the lower driving part gradually contacts and abuts against the inner wall of the periphery of the end cover to realize the positioning function. The positioning mechanism 23 is provided as a plurality of lower molding modules 231, which facilitates the setting and processing.

As shown in fig. 1, further, the material supporting body 22 is connected with the lower die base 21 in a sliding manner up and down; the lower driving part is a lower guide plate 4 which is arranged on the lower die holder 21 and is annularly arranged; the lower guide plate 4 forms a ring shape and is positioned in the periphery of the end cover; the lower guide plate 4 is inclined toward the annular center direction thereof; when the lower forming module 231 contacts the lower guide plate 4 during the downward movement of the lower forming module 231, the lower guide plate 4 can drive the lower forming module 231 to move towards the outside of the ring enclosed by the lower forming module and position the end cover. That is, during the downward movement of the material supporting body 22, the lower forming module 231 on the material supporting body 22 gradually contacts the lower guide plate 4 and moves in the direction away from the annular center of the lower guide plate 4 (i.e., the lower forming module 231 descends and also moves horizontally) under the action of the lower guide plate 4, and gradually abuts against the inner wall of the periphery of the end cover to position the end cover. Preferably, a limiting plate 24 is fixed on the lower die holder 21, the limiting plate 24 is located in the direction of the lower molding module 231, and when the limiting plate 24 is contacted in the process of descending the lower molding module 231, the downward movement is stopped, and at this time, the positioning of the end cover is completed. The retainer plate 24 also functions to support the lower molding block 231.

Preferably, the side of the lower forming module 231 is an obliquely arranged side plate, which is parallel to the lower guide plate 4 and is matched with the lower guide plate 4 for sliding. The side plates cooperate with the lower guide plate 4 to allow the lower molding block 231 to move smoothly.

Wherein, lower baffle 4 can be the integral type annular plate, and the whole looks like the round platform shape promptly, and lower baffle 4 slope means that its lateral wall inclines.

Preferably, the lower guide plate 4 comprises a plurality of lower sub-guide plates arranged in a ring shape, and the plurality of lower sub-guide plates are arranged in one-to-one correspondence with the plurality of lower forming modules 231; the lower sub-guide plate is inclined towards the annular center of the lower guide plate 4; when the lower forming module 231 contacts the lower sub-guide during the downward movement, the lower sub-guide can drive the lower forming module 231 to move towards the outside of the ring enclosed by the lower forming module and position the end cover. That is, the lower guide plate 4 includes a plurality of lower sub-guide plates, and each lower sub-guide plate is respectively matched with one lower forming module 231 to drive the lower forming module 231 to move, so that the setting and processing are convenient.

As shown in fig. 1, a resetting mechanism 25 is further disposed on the lower die base 21, and the resetting mechanism 25 is used for retracting and resetting the positioning mechanism 23. That is, after the closing-up forming of the end cap is completed, the lower forming module 231 of the positioning mechanism 23 still abuts against the inner wall of the circumference of the end cap, and the positioning mechanism 23 is retracted by the resetting mechanism 25 to be reset, so that the lower forming module 231 of the positioning mechanism 23 is separated from the end cap, and the end cap is taken out. The reset mechanism 25 may be an elastic element such as a spring, and when the positioning mechanism 23 is positioned, the elastic element is squeezed, and after the closing is completed, the elastic force of the elastic element drives the positioning mechanism 23 to separate from the end cover.

Preferably, a return spring is fixed on the upper die holder 11, one end of the return spring is connected with the upper forming module 121, the return spring is extruded when the upper forming module 121 moves in the closing process, and the return spring resets the upper forming module 121 to the initial position after the closing process is completed and the upper die 1 moves upwards.

Further, an upper elastic element is arranged on the upper die base 11, and a lower elastic element for supporting the supporting body 22 is arranged on the die base; during the downward movement of the upper die holder 11, the upper elastic member abuts against the material supporting body 22 and pushes the material supporting body 22 to move downward, the lower forming module 231 on the material supporting body 22 starts to contact the lower guide plate 4, the lower forming module 231 moves under the action of the lower guide plate 4 and positions the end cover, and then the upper forming module 121 starts to contact the upper guide plate 3 and moves under the action of the upper guide plate 3 and closes the end cover. The upper elastic member may be a nitrogen spring 6, and the lower elastic member may be a rectangular spring 7. Furthermore, a material pressing body 5 is further arranged on the upper die base 11.

To sum up, the utility model provides a whole use of binding off mould does: the user places the end cover on the supporting body 22, at this time, the lower forming module 231 is located below the end cover and inside the periphery of the end cover, the press drives the upper die 1 to move downwards, because the elasticity of the lower elastic part (the rectangular spring 7) is smaller than that of the upper elastic part (the nitrogen spring 6), the upper elastic part (the nitrogen spring 6) contacts the supporting body 22 first and drives the supporting body 22 to move downwards on the lower die base 21, meanwhile, the lower forming module 231 on the supporting body 22 also moves downwards, the lower forming module 231 gradually contacts the lower guide plate 4 in the downward movement process, and starts to move towards the annular outer direction under the action of the lower guide plate 4, the descending is stopped after the lower forming module 231 abuts against the limiting plate 24 in the descending process, at this time, the lower forming module 231 abuts against the inner wall of the periphery of the end cover, and the periphery of the end cover is supported and positioned. After the end cap is positioned, the upper die 1 continues to move downwards, and the pressing body 5 starts to press on the end cap, so that the end cap is kept still during side molding. After the end cover is pressed, the upper forming module 121 starts to contact the upper guide plate 3, and moves towards the end cover while descending under the action of the upper guide plate 3, and gradually abuts against the outer wall of the periphery of the end cover to squeeze and close the end cover. After the closing-in molding, the upper die 1 is lifted, the material supporting body 22 moves upwards under the action of the lower elastic piece (rectangular spring 7), the lower molding module 231 moves towards the annular center of the lower molding module under the action of the reset mechanism 25 to be closed and separated from the end cover, and finally, the molded end cover is taken down. The utility model discloses also use on the other work pieces outside applicable to car oil tank end cover.

The utility model provides a closing die has following advantage:

1. the one-time extrusion closing-in molding has high closing-in size precision, does not need to be adjusted for many times and is stable;

2. a complex closing-up shape can be formed, and the production efficiency is improved;

3. different closing sizes can be realized by one set of mould, the mould does not need to be changed, and the occupation of factory space is reduced.

Example 2:

as shown in fig. 1-10, the present invention further provides a processing tool, which comprises a stretch breaking integrated mold and the above-mentioned closing-up mold, wherein the stretch breaking integrated mold comprises an upper mold 10 and a lower mold 20; the upper mold 10 includes a drawing die 102; the lower die 20 comprises a drawing male die 203 and a lower extruding block 202 arranged around the outer periphery of the drawing male die 203; when the sheet material contacts the lower breaking block 202 during the descending process, the lower port of the cavity 1023 of the stretching female die 102 and the lower breaking block 202 can break the sheet material.

The utility model discloses well port under the cavity 1023 of tensile die 102 means the border department of the lower extreme of the cavity 1023 of tensile die 102. The lower breaking block 202 arranged around the outer periphery of the drawing punch 203 means that the lower breaking block can be arranged around the outer wall of the drawing punch 23, or as shown in fig. 1, the lower breaking block can be arranged around the edge of the lower port of the drawing punch 23.

When the stretching and squeezing integrated die provided by the embodiment is used, an operator places a plate on the upper portion of the stretching male die 203 of the lower die 20, the press machine drives the upper die 10 to move downwards, and when the stretching female die 102 of the upper die 10 contacts with the plate and then moves downwards, the plate is stretched under the action of the stretching male die 203 and the stretching female die 102. When the stretching female die 102 of the upper die 10 continues to move downwards to the position of the lower extrusion block 202 on the stretching male die 203, the bottom surface of the plate material contacts with the lower extrusion block 202, at this time, because the top surface of the plate material contacts with the stretching female die 102, namely the plate material is clamped between the stretching female die 102 and the ring body, the port of the concave cavity 1023 of the stretching female die 102 and the lower extrusion block 202 extrude the plate material, and finally the upper die 10 moves upwards, and the formed workpiece is taken out. Use the utility model provides a but mould integral type realizes the drawing and crowded disconnected of sheet material, need not to carry on deburring and turn-ups process again, the process of traditional three-lane mould can be realized to one set of mould, required material is less, the material cost is low, and one set of mould assembly is simple with the debugging procedure, the man-hour of assembly debugging mould has been reduced, manpower and processing debugging equipment, mould parking space and later stage cost of transportation have also been reduced simultaneously, integrated into one piece, the later stage production stamping workpiece, practice thrift the manpower, equipment, cost such as time, improve production efficiency simultaneously, the suitability is strong, box-shaped spare such as general oil tank end cover all can be applicable to the utility model discloses a can be used for the material cost.

The utility model discloses a tensile crowded disconnected integral type mould processes out the end cover, recycles binding off mould and closes up to the end cover.

Specifically, the lower extrusion block 202 is horizontally spaced from the lower end of the cavity 1023 by a distance less than the thickness of the slab. The gap between the two is smaller than the thickness of the plate, so that the plate is extruded and broken. The horizontal distance between the two is set according to different plate thicknesses and can be adjusted according to actual processing requirements. Preferably, the horizontal spacing between the two is zero, that is, the inner edge of the port 1023 of the drawing die 102 and the outer edge of the crushing insert are located on the same vertical line, so that the crushing effect is better.

As shown in fig. 7 and 9, further, the lower mold 20 includes a lower mold base 201; the top of the lower extrusion block 202 is positioned below the bottom surface of the stretching male die 203, the bottom of the lower extrusion block 202 is fixed with the lower die holder 201, and the outer edge of the lower extrusion block 202 protrudes out of the side surface of the stretching male die 203. That is, the lower breaking block 202 is provided at the bottom of the drawing punch 203, and the protrusion of the outer edge of the lower breaking block 202 from the side surface of the drawing punch 203 means that the outer edge of the lower breaking block 202 is located outside the drawing punch 203 as viewed from the front-rear direction of the die. The die maker can adjust the height of the lower extrusion block 202 according to the actual processing requirement, so as to adjust the extrusion position of the plate material, and meanwhile, the lower extrusion block 202 is convenient to process and install.

The cross-sectional shape of the lower extrusion block 202 is square. The square upper left corner and the port of the concave cavity 1023 of the stretching female die 102 mutually extrude and break the plate, and the upper left corner plays a role similar to a knife edge and can quickly extrude and break the plate. Of course, the cross section of the lower extrusion block 202 may be trapezoidal, so long as the plate can be extruded and broken.

As shown in fig. 7, the upper die 10 includes an upper die base 101; the stretch die 102 includes stretch inserts 1022 around the outside perimeter of the cavity 1023; the stretching insert 1022 forms a lower port of the concave cavity 1023, and the stretching insert 1022 is fixed on the upper die base 101; when the slab contacts the lower breaking block 202 during the descent, the stretching inserts 1022 and the lower breaking block 202 can break the slab. The fact that the stretching insert 1022 forms the lower port of the cavity 1023 means that a cavity surrounded by the stretching insert 1022 forms a part of the cavity 1023, and the stretching insert 1022 can be made of a material having higher strength than the upper die base, so that the strength of the upper die 10 can be improved without causing excessive cost.

Preferably, the upper die holder 101 is provided with an annular mounting groove that receives the tension insert 1022.

Further, the mold provided by the utility model also comprises a blank holder 30; the blank holder 30 is intended to be placed on a telescopic mechanism of a machine tool, which is intended to jack up the blank holder 30 and to enable the blank holder 30 to move downwards under the pressure of the upper mould 10. Initially, the blank holder 30 is located at a position higher than the drawing male die 203 under the action of the telescopic mechanism, a user places a sheet on the blank holder 30, the upper die 10 moves downward, the upper die 10 and the blank holder 30 press the sheet tightly and then continue to move downward to realize sheet drawing, and when the drawing process is finished, the lower breaking block 202 and the drawing female die 102 break the sheet in a squeezing manner.

Further, the blank holder 30 includes a holder body 301 and a blank holder insert 302 mounted on the holder body 301 and having a ring shape. The binder inserts 302 and binder 30 can be made of different materials as desired.

As shown in fig. 7, further, the drawing die 102 further includes a withdrawing mechanism 13; the ejection mechanism 13 is used for ejecting the formed workpiece in the cavity 1023 of the drawing female die 102. When the sheet material is extruded and broken, the workpiece is molded, the upper die 10 moves upwards, the molded workpiece is clamped in the concave cavity 1023 of the stretching female die 102 due to expansion, and at the moment, the ejection mechanism 13 ejects the molded workpiece in the concave cavity 1023 of the stretching female die 102 out of the concave cavity 1023, so that the molded workpiece is convenient to take out. Further, the drawing die 102 further includes a receiving portion 1021 at the top of the cavity 1023, and the piece returning mechanism 13 includes a nitrogen spring and a piece returning device, wherein the nitrogen spring pushes the piece returning device to move downwards to penetrate into the cavity 1023 so as to eject the formed workpiece.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (17)

1. A necking die is characterized by comprising an upper die, a lower die and an upper driving part;

the upper die comprises an upper die base and a closing mechanism movably connected to the upper die base;

the closing mechanism is annular, and the annular shape can stretch out and draw back;

the lower die is used for placing an end cover;

the upper driving part is used for driving the closing mechanism to contract so as to extrude, close and mold the periphery of the end cover in the annular inner part of the closing mechanism.

2. The necking die of claim 1, wherein the necking mechanism comprises a plurality of upper forming modules arranged in a ring shape; the upper driving part is used for driving the upper forming module to move towards the annular inner part of the upper forming module so as to enable the annular of the closing mechanism to shrink.

3. The necking die of claim 2, wherein the lower die comprises a lower die holder; the upper driving part is an upper guide plate which is arranged on the lower die holder and is annularly arranged; the end cover is placed in the ring formed by the upper guide plate; the upper guide plate inclines towards the direction far away from the end cover;

when the upper forming module is contacted with the upper guide plate in the downward moving process, the upper guide plate can drive the upper forming module to move towards the annular inner direction of the upper forming module and extrude, close and form the periphery of the end cover.

4. The necking die of claim 3, wherein the bottom of the upper forming die block is an obliquely arranged bottom plate, and the bottom plate is parallel to the upper guide plate and is matched with the upper guide plate to slide.

5. The necking die of claim 3, wherein the upper guide plate comprises a plurality of upper sub guide plates which are arranged in a ring shape, and the plurality of upper sub guide plates and the plurality of upper forming modules are arranged in a one-to-one correspondence up and down; the upper sub guide plate inclines towards the direction far away from the end cover;

when the upper forming module is contacted with the upper sub-guide plate in the downward moving process, the upper sub-guide plate can drive the upper forming module to move towards the annular inner direction of the upper forming module and extrude, close and form the periphery of the end cover.

6. The necking die of claim 2, wherein the upper die base is provided with a slide way which is obliquely arranged towards the end cover, and the upper forming module is slidably arranged on the slide way.

7. A necking die according to claim 6, wherein the upper die base is provided with an upper sliding plate and a lower sliding plate which are arranged in parallel at an interval from top to bottom, the upper sliding plate and the lower sliding plate are arranged obliquely towards the end cover, and the sliding way is formed between the upper sliding plate and the lower sliding plate.

8. The necking die of claim 7, wherein the upper forming module comprises a forming mounting portion and a forming insert detachably and fixedly connected to the forming mounting portion;

the shaping installation department with slide sliding connection, the shaping is inserted and is used for the inside end cover border extrusion binding off shaping of annular.

9. The necking die of claim 8, wherein the shaped mounting portion comprises a slider and a connecting portion;

the sliding block is obliquely arranged between the upper sliding plate and the lower sliding plate and is parallel to the upper sliding plate; the upper end of the connecting part is fixed with the upper end of the sliding block, and the forming insert is fixed with the connecting part.

10. A necking die according to claim 3, wherein the lower die further comprises a material supporting mechanism and a lower driving part;

the material supporting mechanism comprises a material supporting body and a positioning mechanism movably connected to the material supporting body; the positioning mechanism is annular and the annular can stretch out and draw back;

the lower driving part is used for driving the positioning mechanism to stretch and is abutted with the periphery of the end cover positioned outside the ring shape of the lower driving part so as to position the end cover.

11. The necking die of claim 10, wherein the positioning mechanism comprises a plurality of lower forming modules arranged in a ring shape; the lower driving part is used for driving the lower forming module to move towards the annular outer part of the lower forming module so as to enable the positioning mechanism to extend.

12. The necking die of claim 11, wherein the support body is connected with the lower die holder of the lower die in a vertically sliding manner; the lower driving part is a lower guide plate which is arranged on the lower die holder and is annularly arranged; the ring formed by the lower guide plate is positioned in the periphery of the end cover; the lower guide plate is inclined towards the annular center direction of the lower guide plate;

when the lower forming module is contacted with the lower guide plate in the downward moving process, the lower guide plate can drive the lower forming module to move towards the direction of the annular outer part enclosed by the lower forming module and position the end cover.

13. The necking die of claim 12, wherein the side portion of the lower forming module is an obliquely arranged side plate, and the side plate is parallel to the lower guide plate and is matched with the lower guide plate to slide.

14. The necking die of claim 12, wherein the lower guide plate comprises a plurality of lower sub-guide plates arranged in a ring shape, and the plurality of lower sub-guide plates are arranged in one-to-one correspondence with the plurality of lower forming modules; the lower sub guide plate is inclined towards the annular center of the lower guide plate;

when the lower forming module is contacted with the lower sub-guide plate in the downward moving process, the lower sub-guide plate can drive the lower forming module to move towards the direction of the annular outer part enclosed by the lower forming module and position the end cover.

15. The necking die of claim 10, wherein a resetting mechanism is arranged on the lower die holder and used for retracting and resetting the positioning mechanism.

16. A necking die according to claim 10, wherein an upper elastic member is provided on the upper die holder, and a lower elastic member for supporting the carrier body is provided on the die holder;

in the process that the upper die holder moves downwards, the upper elastic piece is abutted to the material supporting body and pushes the material supporting body to move downwards, the lower forming module on the material supporting body starts to contact the lower guide plate, the lower forming module moves under the action of the lower guide plate and positions the end cover, and then the upper forming module starts to contact the upper guide plate and moves under the action of the upper guide plate and closes the end cover.

17. A tooling comprising a stretch-break integral die and a converging die of any of claims 1-16;

the stretching and extruding integrated die comprises an upper die and a lower die;

the upper die comprises a stretching female die;

the lower die comprises a stretching male die and a lower extrusion block arranged around the periphery of the stretching male die;

when the plate is contacted with the lower extrusion breaking block in the descending process, the plate can be extruded and broken by the lower port of the concave cavity of the stretching female die and the lower extrusion breaking block.

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