CN110653295A - Stamping die and stamping method - Google Patents
Stamping die and stamping method Download PDFInfo
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- CN110653295A CN110653295A CN201910995193.1A CN201910995193A CN110653295A CN 110653295 A CN110653295 A CN 110653295A CN 201910995193 A CN201910995193 A CN 201910995193A CN 110653295 A CN110653295 A CN 110653295A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 104
- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 238000003825 pressing Methods 0.000 claims abstract description 33
- 238000007493 shaping process Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 10
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000004080 punching Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/12—Edge-curling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a stamping die and a stamping method, relates to the technical field of stamping, and is used for reducing the forming processes and improving the forming quality. The stamping die comprises an outer pressing mechanism, an inner pressing mechanism and a forming mechanism, wherein the outer pressing mechanism comprises an outer sliding block, the inner pressing mechanism comprises an inner sliding block, and the inner sliding block and the outer sliding block move simultaneously and have opposite moving directions, so that the inner sliding block and the outer sliding block can be simultaneously close to the outer wall and the inner wall of a raw material when moving, the inner wall and the outer wall of a product can be synchronously covered, and the forming process can be reduced; and because inner wall and outer wall are covered simultaneously, therefore when fixing the shape to raw materials, can exert the effort to its inner wall and outer wall uniformly to avoid the raw materials to produce the deformation in the vertical direction, with the improvement shaping quality.
Description
Technical Field
The invention relates to the technical field of stamping, in particular to a stamping die and a stamping method.
Background
In the field of sheet metal stamping, in the forming process of a product with a ring-shaped characteristic (as shown in fig. 1), a material pressing mold mechanism covering the inner wall and the outer wall of the product on the ring-shaped surface in the horizontal direction is needed, so as to fixedly support the product (as shown in fig. 2), and when the product is fixedly supported, the edge rolling forming on the upper end surface and the lower end surface of the product in the vertical direction (as shown in fig. 3) needs to be synchronously realized, because of the limitation of a forming structure, the inner wall and the outer wall of the product are difficult to synchronously realize the covering, and therefore multiple processes are needed for step-by-step forming, so that the forming process is complex, and the forming quality is difficult to ensure.
Disclosure of Invention
The invention provides a stamping die and a stamping method, which are used for reducing the forming processes and improving the forming quality.
According to a first aspect of the present invention, there is provided a press die comprising:
the outer pressing mechanism comprises an outer sliding block, and the outer sliding block can move towards the direction close to or far away from the outer wall of the raw material so as to inwards extrude or release the outer wall of the raw material;
an inner pressing mechanism; the inner slide block can move towards the direction close to or far away from the inner wall of the raw material so as to extrude the inner wall of the raw material outwards or relieve the extrusion of the inner wall of the raw material; and
the forming mechanism is positioned on the upper side and/or the lower side of the outer sliding block and is used for performing punch forming on the end part of the raw material after the outer sliding block is attached to the outer wall of the raw material and the inner sliding block is attached to the inner wall of the raw material;
wherein, the inner slide block and the outer slide block move simultaneously and the moving directions of the inner slide block and the outer slide block are opposite.
In one embodiment, the outer press mechanism further comprises:
the outer sliding block stop block is arranged on the outer side of the outer sliding block stop block, and a first gap is formed between the outer sliding block stop block and the outer side of the outer sliding block stop block; and
an outer slider slotting tool for inserting or disengaging the first gap;
when the outer sliding block slotting tool is inserted into the first gap, the outer sliding block moves towards the direction close to the outer wall of the raw material to extrude the outer wall of the raw material inwards; when the outer slide block slotting tool leaves the first gap, the outer slide block moves towards the direction far away from the outer wall of the raw material so as to release extrusion on the outer wall of the raw material.
In one embodiment, the bottom end of the outer slide block slotting tool is provided with a first inclined surface, the outer side of the outer slide block is provided with a second inclined surface, and the inclined angle of the first inclined surface is the same as that of the second inclined surface.
In one embodiment, the outer pressing mechanism further comprises an outer slide return spring assembly located between the outer slide stop and the outer slide for moving the outer slide in a direction away from the outer wall of the feedstock to decompress the outer wall of the feedstock.
In one embodiment, an outer slide block limiting block is arranged on one side, close to the outer slide block, of the outer slide block stop block, and the outer slide block limiting block is used for limiting the maximum displacement of the outer slide block away from the raw material.
In one embodiment, the outer swaging mechanism further includes an outer slide guide block, the outer slide guide block is provided with a guide groove, and at least a portion of the outer slide is disposed in the guide groove to move the outer slide along the guide groove.
In one embodiment, the number of the inner sliding blocks is at least two, and a second gap is arranged between the at least two inner sliding blocks;
the outer and inner pressing mechanisms further comprise inner sliding block slotting tools, and the inner sliding block slotting tools are used for being inserted into or separated from the second gaps;
when the inner slide block slotting tool is inserted into the second gap, the inner slide block moves towards the direction close to the inner wall of the raw material to extrude the inner wall of the raw material outwards; when the inner slide block slotting tool leaves the second gap, the inner slide block moves towards the direction far away from the inner wall of the raw material so as to release extrusion on the inner wall of the raw material.
In one embodiment, the bottom end of the inner slide slotting tool is provided with a third inclined surface, the inner side of the inner slide is provided with a fourth inclined surface, and the inclination angle of the third inclined surface is the same as that of the fourth inclined surface.
In one embodiment, the outer inner pressing mechanism further comprises a slide locking block, one side of the slide locking block is arranged in one of the inner sliding blocks, and the other side of the slide locking block is arranged in the inner sliding block adjacent to the inner sliding block, so that when the inner sliding block slotting tool is inserted into the second gap, at least two inner sliding blocks move simultaneously.
In one embodiment, the outer inner pressing mechanism further comprises an inner sliding block guide block, a sliding groove is formed in the inner sliding block, and the inner sliding block guide block is arranged in the sliding groove.
In one embodiment, the outer inner pressing mechanism further comprises an inner slide block return spring assembly disposed between the inner slide block guide block and the chute, the inner slide block return spring assembly being configured to move the inner slide block in a direction away from the inner wall of the raw material to decompress the inner wall of the raw material.
In one embodiment, the outer inner pressing mechanism further comprises an inner slider cover plate disposed on an upper side of the inner slider, the inner slider cover plate having a connection hole formed therein, and at least a portion of the inner slider guide block being disposed in the connection hole.
In one embodiment, the forming mechanism comprises an upper forming shoe located on the upper side of the outer slide and/or a lower forming shoe located on the lower side of the outer slide;
wherein, the lower extreme of going up the shaping template is provided with the shaping groove, and the upper end of lower shaping template is provided with down the shaping groove.
In one embodiment, the upper profiled groove is configured as a groove having an arcuate top wall and the lower profiled groove is configured as a groove having an arcuate bottom wall
According to a second aspect of the present invention, the present invention provides a method for stamping by using the stamping die, which includes the following steps:
moving the outer slide block towards the direction close to the outer wall of the raw material to extrude the outer wall of the raw material inwards, and simultaneously moving the inner slide block towards the direction close to the inner wall of the raw material to extrude the inner wall of the raw material outwards;
and pressing the end part of the raw material by the forming mechanism so as to punch and form the end part of the raw material.
Compared with the prior art, the invention has at least one of the following advantages: because the inner slide block and the outer slide block move simultaneously and the moving directions of the inner slide block and the outer slide block are opposite, when the inner slide block and the outer slide block move, the inner slide block and the outer slide block can be simultaneously close to the outer wall and the inner wall of the raw material, so that the inner wall and the outer wall of a product can be synchronously covered, and the molding process can be reduced; and because inner wall and outer wall are covered simultaneously, therefore when fixing the shape to raw materials, can exert the effort to its inner wall and outer wall uniformly to avoid the raw materials to produce the deformation in the vertical direction, with the improvement shaping quality.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
FIG. 1 is a top view of a product having a ring-type feature in one embodiment of the present invention;
FIG. 2 is a schematic view of a stationary support for a product having a loop-type feature in accordance with an embodiment of the present invention;
FIG. 3 is an expanded view of a product having a loop-type feature before and after being rolled in one embodiment of the present invention;
FIG. 4 is an exploded view of a stamping die in one embodiment of the invention;
FIG. 5 is a top view of an open state of a press die in an embodiment of the present invention;
FIG. 6 is a top view of a closed state of a stamping die according to an embodiment of the invention;
FIG. 7 is a cross-sectional view 1/4 of an open state of a press die in an embodiment of the invention;
FIG. 8 is a cross-sectional view 1/4 of a closed die condition of a stamping die in an embodiment of the invention;
FIG. 9 is a perspective view of the outer slide blade of FIG. 4;
FIG. 10 is a perspective view of the outer slide shown in FIG. 4;
FIG. 11 is a perspective view of the outer slide guide block shown in FIG. 4;
FIG. 12 is a perspective view of the inner slide slotting tool shown in FIG. 4;
FIG. 13 is a perspective view of the inner slide shown in FIG. 4;
fig. 14 is a perspective view of a press mold (not shown) closing the mold according to an embodiment of the invention.
In the drawings, like components are denoted by like reference numerals. The figures are not drawn to scale.
Reference numerals:
100-external material pressing mechanism; 101-outer slide block; 102-outer slider stop; 103-outer slide block slotting tool; 104-a first gap; 105-a first bevel; 106-a second bevel; 107-outer slide return spring assembly; 108-outer slider stop block; 109-outer slide guide block; 110-a guide groove; 111-through slots; 112-a spring; 113-a connecting rod;
200-an inner pressing mechanism; 201-inner slide block; 202-a second gap; 203-inner slide slotting tool; 204-a third bevel; 205-a fourth slope; 206-sliding lock block; 207-inner slide guide block; 208-a chute; 209-inner slide return spring assembly; 210-inner slide cover plate; 211-connection holes; 212-a connecting trough;
300-a forming mechanism; 301-upper forming template; 302-lower forming template; 303-forming a groove; 304-lower forming groove; 305-a jack;
400-raw material.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 4 to 8, according to a first aspect of the present invention, the present invention provides a stamping die, which includes an outer pressing mechanism 100, an inner pressing mechanism 200, and a forming mechanism 300. During stamping, the outer material pressing mechanism 100 is attached to and presses the outer wall of the raw material, and the inner material pressing mechanism 200 is attached to and presses the inner wall of the raw material, so that the outer wall and the inner wall of the raw material are pressed simultaneously to realize fixed support of the raw material; the end of the stock is then press formed by the forming mechanism 300.
Specifically, the outer pressing mechanism 100 includes an outer slider 101, and the outer slider 101 can move toward or away from the outer wall of the raw material 400 to press or release the outer wall of the raw material 400 inwardly; the inner pressing mechanism 200 comprises an inner slide block 201, the inner slide block 201 is positioned on the inner side of the outer slide block 101, and the inner slide block 201 can move towards a direction close to or far away from the inner wall of the raw material 400 so as to press or release the inner wall of the raw material 400 outwards; wherein, the inner slide 201 and the outer slide 101 move simultaneously and the moving directions of the two are opposite. That is, the outer slider 101 moves toward the outer wall of the raw material while the inner slider 201 moves toward the inner wall of the raw material, thereby clamping the raw material from the outside and the inside at the same time to fixedly support the raw material.
As will be appreciated, since the outer slider 101 and the inner slider 201 are used to extrude the outer wall and the inner wall of the raw material, respectively, for a product having a circular or elliptical radial cross-section, the inner side of the outer slider 101 is configured in an arc-shaped configuration matching the outer wall of the raw material, and the outer side of the inner slider 201 is configured in an arc-shaped configuration matching the inner wall of the raw material; for a product with a rectangular radial cross section, the inner side of the outer slide 101 is configured as a planar structure matching the outer wall of the raw material, and the outer side of the inner slide 201 is configured as a planar structure matching the inner wall of the raw material. In other words, the inner side of the outer slider 101 and the outer side of the inner slider 201 can be selected adaptively according to the shape of the product.
In addition, since the outer slider 101 and the inner slider 201 need to move closer to or farther from the material, and the purpose of uniformly applying the force to each portion of the material is achieved, it is preferable to set the number of the outer slider 101 and the number of the inner slider 201 to two or more. In the embodiment shown in fig. 4 and 14, the number of the outer sliders 101 and the number of the inner sliders 201 are 4.
The forming mechanism 300 is located at the upper side and/or the lower side of the outer slider 101, and the forming mechanism 300 is used for performing press forming on the end portion of the raw material 400.
The press die of the present invention will be described below by taking as an example a structure in which the raw material has a circular radial cross section as shown in fig. 1.
First, the outer pressing mechanism 100 will be described in detail.
The outer swaging mechanism 100 further comprises an outer slide block stopper 102 and an outer slide block slotting tool 103, wherein the outer slide block stopper 102 is arranged on the outer side of the outer slide block 101, and a first gap 104 is arranged between the outer slide block stopper 102 and the outer side of the outer slide block 101; the outer slider blade 103 is adapted to move in a direction perpendicular to the upper side surface of the outer slider 101 (i.e., a vertical direction) to be inserted into or removed from the first gap 104.
As shown in fig. 5 and 7, when the outer slider plunge cutter 103 is not inserted into the first gap 104 (i.e., before the punching starts), the portion (bottom) of the outer slider plunge cutter 103 where the width is smallest is wider than the width of the first gap 104. Therefore, when the outer block plunge cutter 103 is inserted into the first gap 104 in the vertical direction, the outer block 101 is moved because the outer block stopper 102 is fixed, so that the bottom portion of the outer block plunge cutter 103 having the smallest width is inserted into the first gap 104 first, and as the outer block plunge cutter 103 is gradually inserted, the outer block 101 is pushed and moved toward the direction close to the outer wall of the raw material 400, so that the width of the first gap 104 becomes larger, so that the outer block plunge cutter 103 is inserted into the first gap 104 from the top down until the inner side of the outer block 101 is fitted and pressed against the outer wall of the raw material 400.
Further, in order to facilitate the outer slider slotting tool 103 to be smoothly inserted into the first gap 104, as shown in fig. 9, the bottom end of the outer slider slotting tool 103 has a first inclined surface 105, i.e. the bottom end of the outer slider slotting tool 103 is a wedge-shaped bottom end, as shown in fig. 10, the outer side of the outer slider 101 has a second inclined surface 106, and the inclination angles of the first inclined surface 105 and the second inclined surface 106 are the same.
When the outer slider slotting tool 103 is inserted into the first gap 104, the first inclined surface 105 and the second inclined surface 106 are in contact with each other, and along with the continuous insertion of the outer slider slotting tool 103, the first inclined surface 105 and the second inclined surface 106 are staggered with each other to drive the outer slider 101 to move towards the direction close to the outer wall of the raw material, when the first inclined surface 105 and the second inclined surface 106 are completely staggered, the plane side wall of the outer slider slotting tool 103 is attached to the plane outer wall of the outer slider 101, which indicates that each outer slider 101 has moved to a specified position, and at this time, the outer slider 101 cannot be driven to continue to move due to the plane contact between the outer slider slotting tool 103 and the outer slider 101.
In addition, in order to facilitate opening the mold, the outer pressing mechanism 100 further includes an outer slider return spring assembly 107 located between the outer slider stopper 102 and the outer slider 101, and two ends of the outer slider return spring assembly 107 are respectively connected to the outer slider stopper 102 and the outer slider 101. When the outer slide blade 103 is not inserted into the first gap 104 (i.e., before the punching starts), the outer slide return spring assembly 107 is not stressed, and as the outer slide blade 103 is gradually inserted into the first gap 104 and the width of the first gap 104 becomes larger, the outer slide return spring assembly 107 is gradually elongated until the outer slide blade 103 is completely inserted into the first gap 104. If the outer slider plunge cutter 103 is separated from the first gap 104, the width of the first gap 104 is reduced by the restoring force of the outer slider return spring assembly 107, thereby moving the outer slider 101 in a direction away from the outer wall of the raw material 400 to be separated from the outer wall of the raw material 400 to release the pressing.
As shown in fig. 7 and 8, the outer slider return spring assembly 107 includes a spring 112 disposed outside the outer slider stopper 102 and a connecting rod 113 passing through the spring 112, the connecting rod 113 being connected to the outer slider 101 after penetrating the outer slider stopper 102, and the outer slider 101 can be moved away from the outer wall of the raw material 400 by pulling the spring 112.
In order to avoid interference between the outer slider slotting tool 103 and the outer slider return spring assembly 107, a through groove 111 extending in the thickness direction of the outer slider slotting tool 103 is provided; the bottom of the outer slider slotting tool 103 is divided into two parts by the through groove 111, and when the outer slider slotting tool 103 is inserted into the first gap 104, the outer slider return spring assembly 107 can be avoided through the through groove 111, so that interference between the outer slider slotting tool 103 and the outer slider return spring assembly 107 is avoided.
Further, when the outer slider plunge cutter 103 leaves the first gap 104, in order to limit the maximum displacement of the outer slider 101 generated under the restoring force of the outer slider return spring assembly 107, an outer slider stopper 102 is disposed on the outer slider stopper 102 on a side close to the outer slider 101, and the outer slider stopper 102 is used for limiting the maximum displacement of the outer slider 101 away from the raw material 400, that is, when the outer slider 101 moves towards the outer wall far away from the raw material 400, it moves until it contacts the outer slider stopper 102; meanwhile, the outer slider stopper 102 is further configured to maintain a first gap 104 between the outer slider 101 and the outer slider stopper 102 so that the outer slider slotting tool 103 can be inserted between the outer slider 101 and the outer slider stopper 102.
Further, in order to ensure the movement track of the outer slider 101, the outer pressing mechanism 100 further includes an outer slider guide block 109, as shown in fig. 11, a guide groove 110 is provided on the outer slider guide block 109, and at least a portion of the outer slider 101 is disposed in the guide groove 110, so that the outer slider 101 moves along the guide groove 110.
Furthermore, since the number of the outer slides 101 is at least two and accordingly, the number of the outer slide blades 103 is the same as the number of the outer slides 101, it is necessary to ensure that these outer slides 101 can move synchronously. Therefore, the outer slide guide blocks 109 are provided with guide grooves 110 on both sides, the guide groove 110 on one side is used for accommodating at least a part of one outer slide 101, and the guide groove 110 on the other side is used for accommodating at least a part of the other outer slide 101 adjacent to the outer slide 101, so that the two adjacent outer slides 101 can be interlocked through one outer slide guide block 109 to ensure synchronous movement between the outer slides 101.
It will be appreciated that the number of outer slide guide blocks 109 is the same as the number of outer slides 101.
The inner swage mechanism 200 will be described in detail below.
As described above, the number of the inner sliders 201 is at least two, and the second gap 202 is provided between at least two inner sliders 201; the inner swaging mechanism 200 further includes an inner slide blade 203, and the inner slide blade 203 is used for being inserted into or separated from the second gap 202. The inner slide 201 moves in a manner similar to that of the outer slide 101, and is pushed toward the inner wall of the raw material 400 during the movement of the inner slide plunger 203 from the top to the bottom to press the inner wall of the raw material 400 outward.
As shown in fig. 4, the number of the inner sliding blocks 201 is 4, and the 4 inner sliding blocks 201 are wound into a ring shape, and the middle part thereof is the second gap 202, i.e. the ring-shaped gap. When the inner slide slotting tool 203 is inserted into the second gap 202 from top to bottom, the inner slide 201 moves towards the direction close to the inner wall of the raw material 400 to press the inner wall of the raw material 400 outwards; when the inner block slotting tool 203 leaves the second gap 202 from bottom to top, the inner block 201 moves towards the direction away from the inner wall of the raw material 400 to release the extrusion away from the inner wall of the raw material 400.
The inner slide blade 203 is also configured to have a large top and a small bottom, and further, in order to facilitate the insertion of the second gap 202, as shown in fig. 12, the bottom end of the inner slide blade 203 has a third inclined surface 204, the inner side of the inner slide 201 has a fourth inclined surface 205, and the inclined angle of the third inclined surface 204 is the same as that of the fourth inclined surface 205.
When the inner slide slotting tool 203 is inserted into the first gap 104, the third inclined surface 204 and the fourth inclined surface 205 are in contact with each other, and with the continued insertion of the inner slide slotting tool 203, the third inclined surface 204 and the fourth inclined surface 205 are staggered with each other to drive the inner slide 201 to move towards the direction close to the inner wall of the raw material, when the third inclined surface 204 and the fourth inclined surface 205 are completely staggered, the plane side wall of the inner slide slotting tool 203 is attached to the plane inner wall of the inner slide 201, which indicates that each inner slide 201 has moved to a specified position, and at this time, because the plane contact is formed between the inner slide slotting tool 203 and the inner slide 201, the inner slide 201 cannot be driven to continue to move.
The number of the inner slide blades 203 is one, and 4 inner slides 201 are driven to move simultaneously by one inner slide blade 203. Specifically, the inner swaging mechanism 200 further includes a slide lock block 206, one side of the slide lock block 206 is disposed in one of the inner sliders 201, and the other side of the slide lock block 206 is disposed in the inner slider 201 adjacent to the inner slider 201, so that when the inner slider slotting tool 203 is inserted into the second gap 202, 4 inner sliders 201 can move simultaneously.
The sliding lock block 206 is configured as an L-shaped structure, and the inner sliding block 201 is provided with a connecting groove 212 extending from the upper end to the lower end thereof; as shown in fig. 13, both sides of the slide locking piece 206 are respectively disposed in the connection grooves 212 of two adjacent inner sliders 201 so that the inner sliders 201 can be interlocked with each other.
Further, the inner pressing mechanism 200 further comprises an inner slide block guide block 207, a sliding groove 208 is arranged on the inner slide block 201, and the inner slide block guide block 207 is arranged in the sliding groove 208. Because the inner slide block guide block 207 is fixed, when the inner slide block slotting tool 203 pushes the inner slide block 201 downwards, the inner slide block 201 and the inner slide block guide block 207 are staggered along the sliding groove 208, so that the movement track of the inner slide block 201 is ensured.
The inner swaging mechanism 200 further comprises an inner slide block return spring assembly 209 arranged between the inner slide block guide block 207 and the chute 208, and the inner slide block return spring assembly 209 is used for enabling the inner slide block 201 to move towards the direction away from the inner wall of the raw material 400 so as to be away from the inner wall of the raw material 400 to relieve extrusion.
As shown in fig. 6 and 8, when the inner slide slotting cutter 203 is not inserted into the second gap 202 (i.e. before the punching starts), the inner slide resetting spring assembly 209 is not stressed, and as the inner slide slotting cutter 203 is gradually inserted into the second gap 202 and the width of the second gap 202 is increased, the inner slide resetting spring assembly 209 is gradually elongated until the inner slide slotting cutter 203 is completely inserted into the second gap 202. If the inner slide plunge cutter 203 leaves the second gap 202, the radius of the second gap 202 is reduced by the restoring force of the inner slide return spring assembly 209, thereby moving the inner slide 201 away from the inner wall of the raw material 400 to be separated from the inner wall of the raw material 400 to release the compression.
In addition, the inner swaging mechanism 200 further includes an inner slider cover plate 210 disposed on the upper side of the inner slider 201, a connection hole 211 is disposed in the inner slider cover plate 210, at least a portion of the inner slider guide block 207 is disposed in the connection hole 211, and the inner slider guide block 207 is fixed by the inner slider cover plate 210.
As shown in fig. 4, the molding mechanism 300 includes an upper molding plate 301 located on the upper side of the outer slide 101 and/or a lower molding plate 302 located on the lower side of the outer slide 101; wherein, the lower end of the upper forming template 301 is provided with an upper forming groove 303, and the upper end of the lower forming template 302 is provided with a lower forming groove 304.
In one embodiment, as shown in FIG. 7, the upper forming groove structure 303 is configured as a groove having an arcuate top wall and the lower forming groove 304 is configured as a groove having an arcuate bottom wall to provide a roll forming of the upper and/or lower end of the stock material 400.
If only the upper molding plate 301 is disposed on the upper side of the outer slide 101 or only the lower molding plate 302 is disposed on the lower side of the outer slide 101, only the upper end or the lower end of the raw material 400 is rounded; if the upper forming template 301 and the lower forming template 302 are arranged at the same time, the upper end and the lower end of the raw material 400 are simultaneously rounded, and a product with two rounded end surfaces can be obtained.
Further, an insertion hole 305 for fixing the outer slider block 102 is provided on the lower molding plate 302, and the bottom of the outer slider block 102 is inserted into the insertion hole 305 to fix the outer slider block 102.
After the outer slide block 101 and the inner slide block 201 are respectively attached to the outer wall and the inner wall of the raw material 400, the upper forming template 301 moves downwards, so that the raw material 400 is pressed downwards, the upper end face of the raw material 400 enters the upper forming groove 303, the lower section of the raw material 400 enters the lower forming groove 304, and the upper end and the lower end of the raw material 400 form a curled edge under the guiding and pressing effects of the upper forming groove 303 and the lower forming groove 304.
It should be noted that the downward movement of the outer slide slotting tool 103, the inner slide slotting tool 203 and the upper forming die plate 301 can all be provided with original power by the punch press.
Further, the outer and inner swaging mechanisms 100 and 200 of the present invention are both symmetrically disposed with respect to a horizontal direction (X-axis direction as shown in fig. 4) and are both symmetrically disposed with respect to a vertical direction (Y-axis direction as shown in fig. 4), so that only the 1/4 structure of the press mold of the present invention is shown in fig. 7 and 8, and the structure of the rest can be known to those skilled in the art from the symmetry thereof.
According to another aspect of the present invention, the present invention provides a method for stamping by using the stamping die, which includes the following steps:
first, the outer slider plunge cutter 103 moves downward and plunges into the first gap 104, moving the outer slider 101 toward a direction close to the outer wall of the raw material 400 to press the outer wall of the raw material 400 inward; at the same time, the inner block blades 203 are moved downward and inserted into the second gap 202, and the inner blocks 201 are moved toward the inner wall of the raw material 400 to press the inner wall of the raw material 400 outward.
The outer slide blade 103 moves downward until the top of the channel 111 contacts the outer wall of the outer slide return spring assembly 107, indicating proper insertion.
In the second step, the upper molding plate 301 is moved downward to press the ends of the raw material 400 so that the ends of the raw material 400 enter the upper molding groove 303 and the lower molding groove 304, respectively, to obtain a roll-formed product.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (15)
1. A stamping die, comprising:
the outer pressing mechanism comprises an outer sliding block, and the outer sliding block can move towards the direction close to or far away from the outer wall of the raw material so as to inwards extrude or release the extrusion of the outer wall of the raw material;
an inner pressing mechanism; the inner sliding block is positioned on the inner side of the outer sliding block and can move towards the direction close to or far away from the inner wall of the raw material so as to extrude or release the extrusion of the inner wall of the raw material; and
the forming mechanism is positioned on the upper side and/or the lower side of the outer sliding block and is used for performing punch forming on the end part of the raw material after the outer sliding block extrudes the outer wall of the raw material and the inner sliding block extrudes the inner wall of the raw material;
wherein, the inner slide block and the outer slide block move simultaneously and the moving directions of the inner slide block and the outer slide block are opposite.
2. The stamping die of claim 1, wherein the outer swage mechanism further includes:
the outer sliding block stop block is arranged on the outer side of the outer sliding block, and a first gap is formed between the outer sliding block stop block and the outer side of the outer sliding block; and
an outer slider slotting tool for inserting or disengaging the first gap;
when the outer sliding block slotting tool is inserted into the first gap, the outer sliding block moves towards the direction close to the outer wall of the raw material to extrude the outer wall of the raw material inwards; when the outer sliding block slotting tool leaves the first gap, the outer sliding block moves towards the direction far away from the outer wall of the raw material so as to release extrusion on the outer wall of the raw material.
3. The stamping die of claim 2, wherein the bottom end of the outer slide insert has a first slope and the outer side of the outer slide has a second slope, the first slope having the same angle of inclination as the second slope.
4. The stamping die of claim 2 or 3, wherein the outer swaging mechanism further comprises an outer slide return spring assembly located between the outer slide stop and the outer slide, the outer slide return spring assembly configured to move the outer slide in a direction away from the outer wall of the stock material to decompress the outer wall of the stock material.
5. The stamping die of claim 4, wherein an outer slide stopper is disposed on the outer slide stopper on a side thereof adjacent to the outer slide, the outer slide stopper being configured to limit a maximum displacement of the outer slide away from the material.
6. The stamping die of claim 2 or 3, wherein the outer swaging mechanism further comprises an outer slide block guide block, a guide groove is formed in the outer slide block guide block, and at least a portion of the outer slide block is disposed in the guide groove to move the outer slide block along the guide groove.
7. The stamping die according to any one of claims 1 to 3, wherein the number of the inner sliding blocks is at least two, and a second gap is arranged between at least two inner sliding blocks;
the outer pressing mechanism and the inner pressing mechanism further comprise an inner sliding block slotting tool, and the inner sliding block slotting tool is used for being inserted into or separated from the second gap;
when the inner slide block slotting tool is inserted into the second gap, the inner slide block moves towards the direction close to the inner wall of the raw material so as to extrude the inner wall of the raw material outwards; when the inner slide block slotting tool leaves the second gap, the inner slide block moves towards the direction far away from the inner wall of the raw material so as to release extrusion on the inner wall of the raw material.
8. The stamping die of claim 7, wherein the bottom end of the inner slide slotting tool has a third inclined surface, the inner side of the inner slide has a fourth inclined surface, and the third inclined surface has the same inclination angle as the fourth inclined surface.
9. The stamping die of claim 7, wherein the outer and inner swaging mechanism further comprises a slide lock, one side of the slide lock is disposed in one of the inner slides, and the other side of the slide lock is disposed in an inner slide adjacent to the inner slide, such that when the inner slide slotting tool is inserted into the second gap, at least two of the inner slides move simultaneously.
10. The stamping die of claim 7, wherein the outer and inner swaging mechanism further comprises an inner slide guide block, the inner slide is provided with a slide slot, and the inner slide guide block is disposed in the slide slot.
11. The stamping die of claim 10, wherein the outer and inner swage mechanisms further include an inner slide return spring assembly disposed between the inner slide guide block and the chute, the inner slide return spring assembly configured to move the inner slide in a direction away from the inner wall of the stock to decompress the inner wall of the stock.
12. The stamping die of claim 10, wherein the outer and inner swage mechanisms further include an inner slide cover plate disposed on an upper side of the inner slide, the inner slide cover plate having a connection hole disposed therein, at least a portion of the inner slide guide block being disposed in the connection hole.
13. A stamping die according to any of claims 1-3, characterised in that the forming mechanism comprises an upper forming shoe on the upper side of the outer slide and/or a lower forming shoe on the lower side of the outer slide;
the lower end of the upper forming template is provided with an upper forming groove, and the upper end of the lower forming template is provided with a lower forming groove.
14. The stamping die of claim 13, wherein the upper shaping groove is configured as a groove having an arcuate top wall and the lower shaping groove is configured as a groove having an arcuate bottom wall.
15. A method for stamping with a stamping die according to any one of claims 1 to 14, comprising the following operating steps:
moving the outer slide block towards the direction close to the outer wall of the raw material to press the outer wall of the raw material inwards, and simultaneously moving the inner slide block towards the direction close to the inner wall of the raw material to press the inner wall of the raw material outwards;
and pressing the end part of the raw material by the forming mechanism so as to punch and form the end part of the raw material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910995193.1A CN110653295A (en) | 2019-10-18 | 2019-10-18 | Stamping die and stamping method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910995193.1A CN110653295A (en) | 2019-10-18 | 2019-10-18 | Stamping die and stamping method |
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| CN110653295A true CN110653295A (en) | 2020-01-07 |
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