CN102825132A - Punching technology of handle of cabinet freezer and punching die thereof - Google Patents
Punching technology of handle of cabinet freezer and punching die thereof Download PDFInfo
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- CN102825132A CN102825132A CN2012103230186A CN201210323018A CN102825132A CN 102825132 A CN102825132 A CN 102825132A CN 2012103230186 A CN2012103230186 A CN 2012103230186A CN 201210323018 A CN201210323018 A CN 201210323018A CN 102825132 A CN102825132 A CN 102825132A
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- 238000004080 punching Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims description 142
- 239000002184 metal Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 16
- 230000001808 coupling Effects 0.000 claims description 15
- 230000000295 complement Effects 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 10
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Abstract
The invention relates to a punching technology of a handle of a cabinet freezer and a punching die of the punching technology of the handle of the cabinet freezer. The punching technology is a continuous punching technology, comprising the processes of blanking, stretching, side forming, wrapping and separating; and a continuous punching die is adopted in the punching technology. The punching die is the continuous punching die which comprises an upper die and a lower die which are integrally formed; the upper die comprises an upper die for blanking forming, an upper die for stretching forming, an upper die for lateral forming, an upper die for wrapping forming and an upper die for separating forming, which are arranged in sequence; and the lower die comprises a lower die for blanking forming, a lower die for stretching form, a lower die for lateral forming, a lower die for wrapping forming and a lower die for separating forming, which are arranged in sequence. The punching technology disclosed by the invention is continuously carried out, has simple steps, is easy to implement, has a good technical effect, improves the punching efficiency of products, and ensures the stability of the quality of the products; and the punching die disclosed by the invention is compact and symmetric in structure, low in cost of manufacture and high in efficiency, and has stable performance in punching.
Description
Technical field
The invention belongs to the stamping technology field, relate in particular to a kind of reach in freezer handle Sheet Metal Forming Technology and diel thereof.
Background technology
In reach in freezer handle production process, can relate to Sheet Metal Forming Technology and diel usually, existing reach in freezer handle requires the outward appearance light, and is attractive in appearance; Inboard commissure requires the gap even, and highly unanimity can not have drop, could satisfy and adopt welding and the requirement of outward appearance feel automatically automatically; Existing reach in freezer handle all is to adopt a plurality of single station productions usually; In order to enhance productivity, save production cost, customer requirement preferably can be used multistation quantity-produced pattern; But under this production model, reach in freezer handle Sheet Metal Forming Technology and diel meeting thereof run into following problem:
1, because the datum level of product requires the depth of parallelism 0.25, and tolerance is too small, refine limit after the necessary consideration moulding, the operation that is bound to like this trouble, efficient reduces;
2, because product is the typical products of a similar pipe, when using multistation to produce continuously, each structure space of diel receives certain limitation, and inboard joint close moulding is difficulty relatively;
3, because the body variation tendency at product two ends often has wrinkling appearance outside the product end in existing drawing process, the product appearance quality can be affected;
4, in committed step side molding procedure, because conventional slide block structure is adopted in the mould outside, the die size space is limited simultaneously, certainly will influence product stripping efficient and quality like this;
5, in the moulding of committed step parcel, change in shape is violent, and inboard, product end can produce cracking phenomena usually; If hollow forming is used at inboard moulding straight line position in the product end, can make formed product not in place.
Above-mentionedly know, be necessary prior art further perfect.
Summary of the invention
The present invention is that existing reach in freezer handle Sheet Metal Forming Technology operation is loaded down with trivial details, process efficiency is low in order to solve; Mould structure is complicated, high, the punching press weak effect of cost; Can not satisfy product technology and quality high request problem and to propose a kind of technique process simple, effective; Process efficiency is high, and die cost is low, punching press is effective, can satisfy the refrigerator handle Sheet Metal Forming Technology and the diel thereof of product technology and quality requirement.
The present invention realizes through following technical scheme:
Above-mentioned a kind of reach in freezer handle Sheet Metal Forming Technology is continuous stamping process, mainly comprises blanking-stretching-side moulding-parcel-five operations of separation, adopts continuous stamping die, adds the empty step in the not enough place of said die space.
Described reach in freezer handle Sheet Metal Forming Technology, wherein: in the said blanking operation, the outline at the product two ends after the punching molding is kept somewhere surplus.Said side moulding adopts the mode of taking off material by force to carry out moulding.Said side molding procedure increases the technology convex closure in the inboard at product both ends.Said parcel operation adopts solid moulding.
Implement the diel of above-mentioned reach in freezer handle Sheet Metal Forming Technology, be continuous stamping die, comprise integrated upper die and lower die respectively; Said patrix comprises blanking moulding patrix, drawing and forming patrix, side moulding patrix, the parcel moulding patrix of order setting successively and separates the moulding patrix; Said counterdie comprises blanking moulding counterdie, drawing and forming counterdie, side moulding counterdie, the parcel moulding counterdie of order setting successively and separates the moulding counterdie.
The diel of said reach in freezer handle, wherein: said blanking moulding patrix comprises the edge-cutting and hole-punching punch; Said blanking moulding counterdie and said blanking moulding patrix coupling comprise the edge-cutting and hole-punching die that is complementary with said edge-cutting and hole-punching punch.
The diel of said reach in freezer handle, wherein: said drawing and forming patrix comprises the stretching die; Said drawing and forming counterdie is positioned at said blanking moulding counterdie one side, comprise and the stretching convex die of said stretching die coupling, stretch blank holder and be located at said stretching convex die and the stretching blank holder between nitrogen spring.
The diel of said reach in freezer handle, wherein: said side moulding patrix is positioned at said drawing and forming patrix one side, comprise holding pad be located at said holding pad both sides tiltedly carve drive block; Said side moulding counterdie is positioned at said drawing and forming counterdie one side, comprises side shaping mould backing plate, tiltedly carves sliding shoe, back bracket, defelctor apron, slide block retracting spring, compacted under male model and take off the material thimble.
The diel of said reach in freezer handle, wherein: saidly tiltedly carve sliding shoe and back bracket all is located on the said side shaping mould backing plate, said back bracket is positioned at said both sides of tiltedly carving the sliding shoe bottom; Said defelctor apron is located at said both sides of tiltedly carving the sliding shoe top; Said slide block retracting spring, compacted under male model and take off material thimble coupling and be arranged at the said sliding shoe inboard of tiltedly carving.
The diel of said reach in freezer handle, wherein: said parcel moulding patrix is positioned at said side moulding patrix one side, comprises molding concave die; Said parcel moulding counterdie is positioned at said side moulding counterdie one side, comprises and the said compacted under piece of going up the molding concave die coupling.
The diel of said reach in freezer handle, wherein: said separation moulding patrix is positioned at said parcel moulding patrix one side, comprises the separation punch; Said separation moulding counterdie is positioned at said parcel moulding counterdie one side, comprises and the said die that separates that separates the punch coupling.
The diel of said reach in freezer handle, wherein: said counterdie also comprises the guiding mechanism on one group of relative side being located at said counterdie length direction, and said guiding mechanism comprises guide post and guide pad; The two ends of said blanking moulding counterdie, drawing and forming counterdie, side moulding counterdie and parcel moulding counterdie are equipped with one group of said guide post and guide pad.
Beneficial effect:
Reach in freezer handle Sheet Metal Forming Technology of the present invention is that a plurality of technology continuitys are carried out, and step is simple, implement easily, wherein, in blanking, leaves surplus at the outline that carries out product two ends when die-cut, can effectively guarantee the processing quality of subsequent technique; In stretching, control the material flowing velocity through increasing the waste material width, avoided product that wrinkling appearance is arranged in drawing high process; In the side moulding; Carry out moulding through using the mode of taking off material by force; Efficiently solve by conventional single action and tiltedly carve the limited problem of dimensional space that structure is brought, wherein, in the side moulding, also increased technology convex closure operation; Make product strike out the convex closure moulding shown in D zone among Fig. 7, the cracking phenomena of having avoided product when the parcel moulding, acutely to produce owing to change in shape; The parcel moulding can guarantee that the product accurate forming puts in place, and is as shown in Figure 1 simultaneously, and whole technology adds " empty step " in the place of insufficient space, has not only improved the punching press effect of whole technology, and has improved formed product quality and ram efficiency.
Reach in freezer handle of the present invention diel is a continuous stamping die, and upper die and lower die all are structure as a whole, and promptly integrates multiple operation die, and wherein, the design of blanking moulding patrix and blanking moulding counterdie can effectively guarantee the die-cut precision of product; The design of drawing and forming patrix and drawing and forming counterdie can effectively avoid the product part wrinkling, has guaranteed the presentation quality of product; Side moulding patrix and side moulding counterdie adopt and tiltedly carve structure, and side moulding counterdie is provided with and takes off the material thimble, can effectively solve the limited problem of bulk of mould; The dovetail groove slide block of parcel moulding counterdie setting can put the product accurate forming in place; Separating the moulding patrix can separate product with the design that separates the moulding counterdie fast and accurately with waste material; Whole diel compact conformation, symmetry, service efficiency is high, and manufacture difficulty is low; Not only improve the ram efficiency and the quality of workpiece, and reduced cost of goods manufactured.
Description of drawings
Fig. 1 is through the product design sketch after the reach in freezer handle Sheet Metal Forming Technology of the present invention.
Fig. 2 is the product cross section figure after the drawn moulding in the reach in freezer handle Sheet Metal Forming Technology of the present invention.
Fig. 3 is the product cross section figure after the side moulding in the reach in freezer handle Sheet Metal Forming Technology of the present invention.
Fig. 4 is the product cross section figure after the parcel moulding in the reach in freezer handle Sheet Metal Forming Technology of the present invention.
Fig. 5 is the local flow process structural representation of reach in freezer handle Sheet Metal Forming Technology of the present invention.
Fig. 6 is the product partial structurtes figure the reach in freezer handle does not add convex closure technology when the side moulding after.
Fig. 7 is the product partial structurtes figure the reach in freezer handle has added convex closure technology through the side moulding time after.
Fig. 8 is the structural representation of reach in freezer handle of the present invention diel.
Fig. 9 is the counterdie structural representation of reach in freezer handle of the present invention diel.
Figure 10 is the side moulding patrix of reach in freezer handle of the present invention diel and the partial structurtes sketch map after the cooperation of side moulding counterdie.
Figure 11 is the partial structurtes sketch map of the parcel moulding counterdie of reach in freezer handle of the present invention diel.
Figure 12 is the profile of the parcel moulding counterdie partial structurtes of reach in freezer handle of the present invention diel.
The specific embodiment
Shown in Fig. 1 to 7, cooling cabinet handle Sheet Metal Forming Technology of the present invention is a continuous stamping process, adopts continuous stamping die, and master operation is: blanking-stretching-side moulding-parcel-separation, and in the empty step of the place of insufficient space adding.Following further explain technological process of the present invention:
(1) blanking
The stainless steel plate is positioned on the continuous mould; Carry out die-cutly through diel, make it be die-cut into the wide plate structure in intermediate narrower two ends 3, the two ends outline 31,32 of this plate structure 3 leaves surplus when die-cut; That is increase the profile of this plate structure 3, like Fig. 5, shown in Figure 6; Owing to increase the profile of this plate structure 3, increase the waste material width, thereby controlled the material flowing velocity, overcome because the wrinkling problem in A place that the body variation tendency at product two ends causes.
(2) stretch
With in the step (1) the plate structure of blanking forming strike out the shell structure that the cross section roughly takes the shape of the letter U through diel, as shown in Figure 2, and then the surplus that product two ends outline is stayed fallen through cut;
(3) side moulding
The good product of drawing and forming in the step (2) is struck out the oval-shaped shell knot that the cross section roughly is breach, as shown in Figure 3; This side molding procedure adopts the mode of taking off material by force to carry out moulding, and increases technology convex closure 4 in the inboard at product both ends, and is as shown in Figure 7;
(4) parcel
Product after the side moulding in the step (3) is struck out the roughly rounded shell structure in cross section once more, as shown in Figure 4; This parcel operation adopts solid moulding, has overcome the moulding problem not in place of hollow forming;
(5) separate
The product of parcel forming in the step (4) is die-cut once more, it is separated with waste material, become finished product.
Wherein, Reach in freezer handle Sheet Metal Forming Technology adds the free step when the diel insufficient space; The so-called empty step promptly is that product shape or size in this operation have no variation; Adding the empty step is for the space of operation before increasing or back operation, just can better satisfy requirements such as life-span or convenient for maintaining like this, improves product quality and stability.
Shown in Fig. 8 to 12, implement the diel of above-mentioned reach in freezer handle Sheet Metal Forming Technology, be continuous mould, comprise integrated respectively patrix 1 and the counterdie 2 that is complementary with patrix 1.
Patrix 1 is structure as a whole, and comprise blanking moulding patrix 11, drawing and forming patrix 12, side moulding patrix 13, the parcel moulding patrix 14 of order setting successively and separate moulding patrix 15,
Blanking moulding patrix 11 is positioned at patrix 1 one ends, comprises edge-cutting and hole-punching punch 111;
Drawing and forming patrix 12 is positioned at a side of blanking moulding patrix 11, comprises stretching die 121;
Side moulding patrix 13 is positioned at a side of drawing and forming patrix 12; Comprise holding pad 131 and a pair of drive block 132 of tiltedly carving; Holding pad 131 bottom central cave inward and form the guide groove that the cross section roughly is the breach elliptical shape; Tiltedly carve drive block 132 and be located at holding pad 131 both sides, wherein, each is tiltedly carved inboard, drive block 132 bottom and is equipped with the inclined-plane;
Parcel moulding patrix 14 is positioned at a side of drawing and forming patrix 13, comprises molding concave die 141;
Separate moulding patrix 15 and be positioned at a side of parcel moulding patrix 14, promptly be positioned at and touch the relative the other end of 1 up and down material moulding patrix 11, separate moulding patrix 15 and comprise and separate punch 151.
Counterdie 2 also is structure as a whole, and it comprises blanking moulding counterdie 21, drawing and forming counterdie 22, side moulding counterdie 23, parcel moulding counterdie 24, the separation moulding counterdie 25 of order setting successively and the guiding mechanism 26 of being located at 2 one groups of relative sides of counterdie;
Blanking moulding counterdie 21 is positioned at counterdie 2 one ends, the setting that is complementary of the blanking moulding patrix 11 of itself and patrix 1, and blanking moulding counterdie 21 comprises the edge-cutting and hole-punching die 211 with edge-cutting and hole-punching punch 111 couplings of blanking moulding patrix 11;
Drawing and forming counterdie 22 is positioned at blanking moulding counterdie 21 1 sides; The setting that is complementary of the drawing and forming patrix 12 of itself and patrix 1; Drawing and forming counterdie 22 comprises stretching convex die 221, stretching blank holder 222 and nitrogen spring 223; Stretching convex die 221 is located at middle side part on the stretching blank holder 222 and is complementary with the stretching die 121 of drawing and forming patrix 12, and nitrogen spring 223 is located between stretching convex die 221 and the stretching blank holder 222.
Side moulding counterdie 23 is positioned at drawing and forming counterdie 22 1 sides; The setting that is complementary of the side moulding patrix 13 of itself and patrix 1, side moulding counterdie 23 comprise side shaping mould backing plate 231, tiltedly carve sliding shoe 232, back bracket 233, slide block retracting spring 234, defelctor apron 235, compacted under male model 236 and take off material thimble 237; Tiltedly carve sliding shoe 232 for being symmetrically set in a pair of on the side shaping mould backing plate 231, its drive block 132 of tiltedly carving with side moulding patrix 13 is complementary, and each is tiltedly carved the outside, sliding shoe 232 tops and is equipped with and tiltedly carves the inclined-plane that inclined-plane, inboard, drive block 132 bottoms is complementary; Back bracket 233 is divided into two groups, is symmetrically set in the both sides of tiltedly carving sliding shoe 232 bottoms respectively; Slide block retracting spring 234 is symmetrically set in and tiltedly carves sliding shoe 232 inboard in opposite directions; Defelctor apron 235 is symmetrically set in the both sides of tiltedly carving sliding shoe 232 tops; Compacted under male model 236 is a pair of, and it is located at and tiltedly carves sliding shoe 232 inboards, promptly penetrates from a pair of gap of tiltedly carving between the sliding shoe 232; Take off material thimble 237 and be located at compacted under male model 236 inboards, promptly penetrate, can in the gap between a pair of compacted under male model 236, stretch back and forth under the promotion of hydraulic jack from the gap between a pair of compacted under male model 236.
Parcel moulding counterdie 24 is positioned at side moulding counterdie 23 1 sides; The setting that is complementary of the parcel moulding patrix 14 of itself and patrix 1; Parcel moulding counterdie 24 comprises parcel moulding backing plate 241, die holder 242, compacted under piece 243, dovetail sliding shoe 244, slide block retracting spring 245 and sliding shoe holder 246, and die holder 242 couplings are arranged on the parcel moulding backing plate 241; Compacted under piece 243 coupling be arranged at die holder 242 upsides and with patrix 1 on the last molding concave die 141 of parcel moulding patrix 14 be complementary; Dovetail sliding shoe 244 couplings are arranged at compacted under piece 243 ends, and are connected with die holder 242 through slide block retracting spring 245; Sliding shoe holder 246 couplings are arranged at dovetail sliding shoe 244 1 ends.
Separate moulding counterdie 25 and be positioned at parcel moulding counterdie 24 1 sides; Promptly be positioned at the relative the other end of counterdie 2 up and down material punching molding counterdie 21; Its with separate moulding patrix 15 setting that is complementary; Separate moulding counterdie 25 and comprise the separation die 251 that is symmetrical in both sides, counterdie 2 one end, separate the punch 151 that separates that separates moulding patrix 15 on die 251 and the patrix 1 and be complementary;
Guiding mechanism 26 is located on one group of relative side of counterdie 2 length directions; Comprise the guide post 261 and guide pad 262 that are used for coiled strip; Be positioned at one group of guide post 261 and guide pad 262 at edge-cutting and hole-punching die 211 two ends of blanking moulding counterdie 21, guide pad 262 is provided in a side of guide post 261 1 sides;
Wherein, Be positioned at stretching blank holder 222 two ends of drawing and forming counterdie 22, the one group of guide post 261 that is positioned at side shaping mould backing plate 231 two ends of side moulding counterdie 23 and is positioned at that the two ends of parcel moulding counterdie 24 respectively establish and guide pad 262, guide pad 262 is provided in a side of on the guide post 261.
The Sheet Metal Forming Technology of reach in freezer handle of the present invention is carried out for a plurality of Sheet Metal Forming Technology continuitys, and blanking punching molding and drawing and forming have effectively guaranteed the tolerance and the presentation quality of product; The mode moulding of taking off material is by force adopted in the side moulding, has improved the stability of product; The parcel moulding has effectively avoided traditional parcel process product to produce cracking and moulding problem not in place; Separating moulding can separate product accurately and effectively with waste material, whole technology not only makes formed product effective, and efficient is high.
The diel of reach in freezer handle of the present invention is a continuous stamping die; Its structural design is compact, symmetrical, and upper die and lower die all are structure as a whole and integrate multiple operation die, have significantly improved the ram efficiency of product; And the product punching press is effective; Steady quality has improved production efficiency of products, has reduced production cost.
Claims (13)
1. reach in freezer handle Sheet Metal Forming Technology, it is characterized in that: said technology is continuous stamping process, mainly comprises blanking-stretching-side moulding-parcel-five operations of separation, adopts continuous stamping die, adds the empty step in the not enough place of said die space.
2. reach in freezer handle Sheet Metal Forming Technology as claimed in claim 1 is characterized in that: in the said blanking operation, the outline at the product two ends after the punching molding is kept somewhere surplus.
3. reach in freezer handle Sheet Metal Forming Technology as claimed in claim 1 is characterized in that: said side moulding adopts the mode of taking off material by force to carry out moulding.
4. reach in freezer handle Sheet Metal Forming Technology as claimed in claim 3 is characterized in that: said side molding procedure increases the technology convex closure in the inboard at product both ends.
5. reach in freezer handle Sheet Metal Forming Technology as claimed in claim 1 is characterized in that: said parcel operation adopts solid moulding.
6. the diel of enforcement such as the arbitrary described reach in freezer handle Sheet Metal Forming Technology of claim 1-5, it is characterized in that: said mould is a continuous stamping die, comprises integrated upper die and lower die respectively;
Said blanking moulding patrix, drawing and forming patrix, side moulding patrix, parcel moulding patrix and the separation moulding patrix that comprises order setting successively;
Said counterdie comprises blanking moulding counterdie, drawing and forming counterdie, side moulding counterdie, the parcel moulding counterdie of order setting successively and separates the moulding counterdie.
7. reach in freezer handle as claimed in claim 6 diel is characterized in that: said blanking moulding patrix comprises the edge-cutting and hole-punching punch; Said blanking moulding counterdie and said blanking moulding patrix coupling comprise the edge-cutting and hole-punching die that is complementary with said edge-cutting and hole-punching punch.
8. reach in freezer handle as claimed in claim 6 diel is characterized in that: said drawing and forming patrix is positioned at and comprises the stretching die; Said drawing and forming counterdie comprises and the stretching convex die of said stretching die coupling, stretch blank holder and be located at said stretching convex die and the stretching blank holder between nitrogen spring.
9. reach in freezer handle as claimed in claim 6 diel is characterized in that: said side moulding patrix comprise holding pad be located at said holding pad both sides tiltedly carve drive block; Said side moulding counterdie comprises side shaping mould backing plate, tiltedly carves sliding shoe, back bracket, defelctor apron, slide block retracting spring, compacted under male model and take off the material thimble.
10. reach in freezer handle as claimed in claim 9 diel is characterized in that: saidly tiltedly carve sliding shoe and back bracket all is located on the said side shaping mould backing plate, said back bracket is positioned at said both sides of tiltedly carving the sliding shoe bottom; Said defelctor apron is located at said both sides of tiltedly carving the sliding shoe top; Said slide block retracting spring, compacted under male model and take off material thimble coupling and be arranged at the said sliding shoe inboard of tiltedly carving.
11. reach in freezer handle as claimed in claim 6 diel is characterized in that: said parcel moulding patrix comprises molding concave die; Said parcel moulding counterdie comprises and the said compacted under piece of going up the molding concave die coupling.
12. reach in freezer handle as claimed in claim 6 diel is characterized in that: said separation moulding patrix comprises the separation punch; Said separation moulding counterdie comprises and the said die that separates that separates the punch coupling.
13. reach in freezer handle as claimed in claim 6 diel is characterized in that: said counterdie also comprises the guiding mechanism on one group of relative side being located at said counterdie length direction, and said guiding mechanism comprises guide post and guide pad;
The two ends of said blanking moulding counterdie, drawing and forming counterdie, side moulding counterdie and parcel moulding counterdie are equipped with one group of said guide post and guide pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323018.6A CN102825132B (en) | 2012-09-04 | 2012-09-04 | Punching technology of handle of cabinet freezer and punching die thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323018.6A CN102825132B (en) | 2012-09-04 | 2012-09-04 | Punching technology of handle of cabinet freezer and punching die thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102825132A true CN102825132A (en) | 2012-12-19 |
| CN102825132B CN102825132B (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210323018.6A Expired - Fee Related CN102825132B (en) | 2012-09-04 | 2012-09-04 | Punching technology of handle of cabinet freezer and punching die thereof |
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| Country | Link |
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| CN (1) | CN102825132B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979362A (en) * | 2012-12-31 | 2013-03-20 | 东莞市精力仁模具有限公司 | Cabinet door handle of household appliance |
| CN104438534A (en) * | 2014-12-03 | 2015-03-25 | 宁波李氏实业有限公司 | Machining method for trigger of spray gun |
| CN113757986A (en) * | 2021-08-20 | 2021-12-07 | Tcl空调器(中山)有限公司 | Handle forming method, air conditioner outdoor unit and air conditioner |
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| US8196498B2 (en) * | 2009-12-23 | 2012-06-12 | Wen-Pin Wang | Forming method for applying a continuous punching to a chain roller |
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| CN202725834U (en) * | 2012-09-04 | 2013-02-13 | 东莞市精力仁模具有限公司 | Stamping die for cabinet freezer handle |
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| CN1962112A (en) * | 2005-11-11 | 2007-05-16 | 比亚迪股份有限公司 | Method for forming platy pieces with negative angle |
| US8196498B2 (en) * | 2009-12-23 | 2012-06-12 | Wen-Pin Wang | Forming method for applying a continuous punching to a chain roller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102979362A (en) * | 2012-12-31 | 2013-03-20 | 东莞市精力仁模具有限公司 | Cabinet door handle of household appliance |
| CN104438534A (en) * | 2014-12-03 | 2015-03-25 | 宁波李氏实业有限公司 | Machining method for trigger of spray gun |
| CN113757986A (en) * | 2021-08-20 | 2021-12-07 | Tcl空调器(中山)有限公司 | Handle forming method, air conditioner outdoor unit and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN102825132B (en) | 2014-11-12 |
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