CN111322681A - Lifting lug, air conditioner indoor unit, air conditioner and punch forming method of lifting lug - Google Patents
Lifting lug, air conditioner indoor unit, air conditioner and punch forming method of lifting lug Download PDFInfo
- Publication number
- CN111322681A CN111322681A CN202010243636.4A CN202010243636A CN111322681A CN 111322681 A CN111322681 A CN 111322681A CN 202010243636 A CN202010243636 A CN 202010243636A CN 111322681 A CN111322681 A CN 111322681A
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- Prior art keywords
- connecting plate
- edge
- hole
- shackle
- lifting lug
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims description 21
- 230000002265 prevention Effects 0.000 claims description 12
- 230000000750 progressive effect Effects 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 description 18
- 238000004378 air conditioning Methods 0.000 description 16
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000005498 polishing Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/32—Supports for air-conditioning, air-humidification or ventilation units
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
The invention discloses a lifting lug, and discloses an air conditioner indoor unit with the lifting lug, an air conditioner and a punch forming method of the lifting lug, wherein the punch forming method comprises the following steps: providing a sheet metal part; blanking the sheet metal part to obtain a preprocessed part, wherein the preprocessed part comprises a first connecting plate and a second connecting plate, the first connecting plate is provided with a first connecting hole, and the second connecting plate is provided with a second connecting hole; removing burrs on the edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate to obtain a to-be-stamped part; and carrying out punch forming on the to-be-stamped part. The punch forming method improves the existing punch forming manufacturing process, directly removes burrs in the blanking process, does not need secondary processing on the formed lifting lug, improves the production efficiency and the product quality, and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a lifting lug, an air conditioner indoor unit, an air conditioner and a punch forming method of the lifting lug.
Background
The lifting lug is a common part on light commercial air conditioners (air pipe machines, cold radiators, seat cranes and the like), and is mainly used for lifting an indoor unit of the air conditioner above a room. In current lug, there is the burr, and the burr is the sharp-pointed protrusion that the panel beating blanking in-process produced, and in the actual operation in-process, human (especially staff) can have the hidden danger of incising with the burr contact.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a lifting lug which can reduce the risk of cutting human bodies by burrs.
The invention also provides an air-conditioning indoor unit with the lifting lug.
The invention also provides an air conditioner with the air conditioner indoor unit.
The invention further provides a punch forming method of the lifting lug.
The shackle according to an embodiment of the first aspect of the invention comprises: a first connection plate provided with a first connection hole; the second connecting plate is connected to the first connecting plate and provided with a second connecting hole; the cutting prevention part comprises a bright belt and chamfers arranged at two ends of the bright belt; wherein the cutting prevention part is provided on an edge of the first connection plate, an edge of the first connection hole, and an edge of one end of the second connection plate away from the first connection plate.
The lifting lug according to the embodiment of the invention has at least the following beneficial effects: the lifting lug is fixedly connected with the indoor unit of the air conditioner through the matching of the bolt and the second connecting hole of the lifting lug, and the lifting lug is fixed at one end of the fixed lifting rod through the matching of the fixing nut, the gasket and the like and the first connecting hole, so that the indoor unit of the air conditioner is hoisted. The edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate are provided with the cutting prevention part, namely, the chamfer is arranged at the position, common burrs in the lifting lug can be removed, and the risk that the burrs cut the human body in the operation process is reduced.
According to some embodiments of the invention, the cut preventing portion is formed by press forming.
According to some embodiments of the invention, the first connection plate and the second connection plate each have a thickness of 1mm or more.
According to some embodiments of the invention, the first connection plate has a thickness that is the same as a thickness of the second connection plate.
According to some embodiments of the present invention, two material connecting plates are respectively disposed at two sides of the second connecting plate, the material connecting plates extend outward from one side of the second connecting plate, and the cutting preventing portions are disposed at two sides of the material connecting plates.
According to some embodiments of the present invention, the first connection plate is provided with an opening communicating with the first connection hole, and an edge of the opening is provided with the cut preventing part.
According to some embodiments of the invention, the chamfer is a fillet.
According to some embodiments of the invention, an end of the first connecting plate remote from the second connecting plate is provided with a flange.
According to some embodiments of the invention, further comprising a stiffener extending from the first connecting plate to the second connecting plate.
According to some embodiments of the invention, the first connection hole is a kidney-shaped hole.
According to some embodiments of the invention, the second connecting plate is provided with a third connecting hole, and the third connecting hole is a kidney-shaped hole.
According to some embodiments of the invention, an end of the second connecting plate remote from the first connecting plate is provided with a hook.
An air conditioning indoor unit according to a second aspect of the present invention includes the above-described lug.
The air conditioner indoor unit provided by the embodiment of the invention at least has the following beneficial effects: the edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate are provided with the cutting prevention part, namely, the chamfer is arranged at the position, common burrs in the lifting lug can be removed, and the risk that the burrs cut the human body in the operation process is reduced.
An air conditioner according to an embodiment of a third aspect of the present invention includes the air conditioning indoor unit described above.
The air conditioner provided by the embodiment of the invention has at least the following beneficial effects: the edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate are provided with the cutting prevention part, namely, the chamfer is arranged at the position, common burrs in the lifting lug can be removed, and the risk that the burrs cut the human body in the operation process is reduced.
A press-forming method of a shackle according to an embodiment of a fourth aspect of the present invention includes the steps of:
providing a sheet metal part;
blanking the sheet metal part to obtain a preprocessed part, wherein the preprocessed part comprises a first connecting plate and a second connecting plate, the first connecting plate is provided with a first connecting hole, and the second connecting plate is provided with a second connecting hole;
removing burrs on the edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate to obtain a to-be-stamped part;
and carrying out punch forming on the to-be-stamped part.
The punch forming method of the lifting lug has the following beneficial effects: according to the punch forming method, burrs are directly removed in the blanking process, secondary processing is not needed to be carried out on the formed lifting lug, the production efficiency and the product quality are improved, and the production cost is reduced.
According to some embodiments of the invention, the stamping forming method is performed using a progressive die.
According to some embodiments of the invention, the first connection plate of the pretreatment member is provided with an opening communicating with the first connection hole, and the deburring is performed on an edge of the first connection plate, an edge of the first connection hole, and an edge of an end of the second connection plate away from the first connection plate, further comprising:
and removing burrs on the edge of the opening.
According to some embodiments of the present invention, the deburring of the edge of the first connection plate, the edge of the first connection hole, and the edge of the second connection plate at the end away from the first connection plate, on which the corner collapse region, the bright zone, and the fracture zone are formed, includes the steps of:
finely cutting the fractured strip to remove burrs;
and carrying out rounding and flattening treatment on the finely cut fracture belt.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a shackle according to an embodiment of the present invention;
figure 2 is a side view of the shackle shown in figure 1;
FIG. 3 is an enlarged view at A shown in FIG. 2;
FIG. 4 is a sectional view B-B shown in FIG. 3;
FIG. 5 is a schematic view of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 6 is a flowchart of a press-forming method of a shackle according to a first embodiment of the present invention;
fig. 7 is a flowchart of a press-forming method of a shackle according to a second embodiment of the present invention;
fig. 8 is a flowchart of a method of press-forming a shackle according to a third embodiment of the present invention.
Reference numerals: a lifting lug 100; a first connection plate 101; a second connecting plate 102; a first connection hole 103; a second connection hole 104; a cut prevention portion 105; an opening 106; a flanging 107; a reinforcing rib 108; the third connection hole 109; a material connecting plate 110; a hook 111;
a bright band 301; chamfering 302; a collapsed corner region 303;
a fixed boom 501; an indoor air conditioner 502.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring now to figures 1 to 4, a shackle 100 according to a first aspect of an embodiment of the present invention will be described.
Referring to fig. 1 and 2, a shackle 100 according to a first aspect of an embodiment of the present invention includes a first connection plate 101 and a second connection plate 102, the first connection plate 101 being provided with a first connection hole 103; the second connecting plate 102 is vertically connected to the first connecting plate 101, and the second connecting plate 102 is provided with a second connecting hole 104; a cut prevention portion 105 is provided on an edge of the first connection plate 101, an edge of the first connection hole 103, and an edge of an end of the second connection plate 102 away from the first connection plate 101.
Here, referring to fig. 3 and 4, the cut preventing portion 105 includes a bright strip 301 and chamfers 302 provided at both ends of the bright strip 301. Referring to fig. 5, the lifting lug 100 is fixedly connected to the indoor unit 502 of the air conditioner by engaging the second connection hole 104 of the lifting lug 100 with a bolt, and then engages with the first connection hole 103 by engaging a fixing nut, a spacer, and the like, so that the lifting lug 100 is fixed to one end of the fixing hanger 501, thereby lifting the indoor unit 502 of the air conditioner. By providing the cutting prevention part 105 at the edge of the first connection plate 101, the edge of the first connection hole 103 and the edge of the end of the second connection plate 102 far away from the first connection plate 101, that is, by providing the chamfer 302 at the above-mentioned position, the burr commonly seen in the lifting lug 100 can be removed, and the risk of cutting the human body by the burr during the operation process can be reduced.
It should be noted that the included angle between the first connecting plate 101 and the second connecting plate 102 may also be set to be 45 ° to 135 °, and in this embodiment, the included angle between the first connecting plate 101 and the second connecting plate 102 is only 90 °, that is, the first connecting plate 101 and the second connecting plate 102 are vertically disposed for illustration, and should not be construed as limiting the present invention.
In some embodiments, two material connecting plates 110 are respectively disposed on two sides of the second connecting plate 102, the material connecting plates 110 extend outward from one side of the second connecting plate 102, and the cut preventing portions 105 are disposed on two sides of the material connecting plates 110. The material connecting plate 110 extends and protrudes towards two sides of the second connecting plate 102, so that the attaching area of the side plate assembled with the indoor unit 502 of the air conditioner can be increased, the friction force is increased, and the bearing capacity is improved. Meanwhile, in the process of installing the lifting lug 100, both sides of the material connecting plate 110 are easy to contact with a human body, and the cutting prevention parts 105 are arranged on both sides of the material connecting plate 110, so that the accident that the human body is cut is effectively avoided.
In some embodiments, the first connection plate 101 is provided with an opening 106 communicating with the first connection hole 103, and an edge of the opening 106 is provided with a cut-preventing portion 105. Through setting up first connecting hole 103 of opening 106 intercommunication, can make things convenient for fixed jib 501 to put into first connecting hole 103 along opening 106 from one side of first connecting plate 101, and need not fixed jib 501 vertical insert first connecting hole 103 in, easy to assemble. In addition, the edge of the opening 106 is provided with the cutting-proof portion 105, the opening 106 is also burred after being punched, and the human body is easily touched in the operation process, so that the risk of cutting the human body is present.
In some embodiments, the cut resistant portion 105 is formed by stamping. Compare in polishing the burring again after processing the edge, the lug 100 of this application can directly get rid of the burr in stamping process through progressive die punching press anti-cutting portion 105, does not need secondary operation, has improved production efficiency, product quality, has reduced manufacturing cost. Wherein the progressive die is a die having two or more stations into which material is fed in succession with the press stroke, thereby progressively forming the punch. Meanwhile, the chamfer 302 formed by punch forming has a smoother surface compared with a machined surface formed after the burr is removed by polishing, and can also prevent the generation of secondary burrs.
In some embodiments, the thickness of the first connecting plate 101 and the thickness of the second connecting plate 102 are both above 1 mm. In the related technology, some schemes adopt an edge folding process to remove burrs, and edge folding is a process of bending and turning a sheet material by 180 degrees through a die or other tools to enable the material to be tightly pressed and combined into a whole so as to increase the appearance quality, strength or rigidity of a workpiece. The folding edge is generally only suitable for sheet metal parts with the material thickness less than or equal to 1.0 mm. Sheet metal parts having a thickness exceeding this value cannot be used. The light commercial air conditioner is heavy, and the lifting lug 100 is used as a bearing part and generally adopts a sheet metal part with the thickness of more than 1.0mm and even 2.5mm, so the lifting lug 100 of the light commercial air conditioner is not suitable for deburring by adopting a flanging process. And adopt foretell stamping forming, can get rid of the burr effectively. In some embodiments, the first connecting plate has the same thickness as the second connecting plate, which facilitates the stamping process.
In some embodiments, the chamfer 302 of the cut guard 105 is a fillet. The scheme of adopting the fillet is more level and smooth for the scheme that adopts 45 chamfer 302, 60 chamfer 302 on its connection face, is difficult to appear closed angle and burr, can further reduce the risk that lug 100 cuts the human body.
In some embodiments, a flange 107 is disposed at an end of the first connecting plate 101 away from the second connecting plate 102, the flange 107 is turned over toward the inner side of the lifting lug 100, a round corner surface is formed at a joint of the flange 107 and the first connecting plate 101 due to the turning over, the round corner surface is a position which is easily touched by a human body when the lifting lug 100 is installed, and the round corner surface is smooth in plane and does not cause a risk of cutting the human body. Meanwhile, the first connection hole 103 of the first connection plate 101 is engaged with the fixed hanger 501 by a fixing nut, a washer, or the like, to fix the lifting lug 100 to one end of the fixed hanger 501. In some conditions, the nut is loosened, and the fixed suspension bar 501 may slip out along the opening 106 communicating with the first connection hole 103, causing an accident. The turned edge 107 in the scheme can limit the movement of the nut, so that the hanger rod is blocked from sliding out along the opening 106, and the risk of accidents is reduced.
In some embodiments, the lifting lug 100 includes a reinforcing bar 108, the reinforcing bar 108 extending to the first attachment plate 101 to the second attachment plate 102. The reinforcing ribs 108 are arranged on the inner surface of the lifting lug 100, so that the connection strength of the first connecting plate 101 and the second connecting plate 102 can be effectively improved, and the bearing capacity of the lifting lug 100 can be further improved.
In some embodiments, the first connection hole 103 is a kidney-shaped hole. When the air-conditioning indoor unit 502 is assembled, mutual positions among some parts hardly reach ideal positions or positions among the parts need to be adjusted, and compared with round holes, the waist-shaped holes are adopted to facilitate adjustment of installation positions, so that assembly errors are adapted, reworking is not needed, and the installation efficiency and the assembly quality are improved.
In some embodiments, the end of the second connecting plate 102 away from the first connecting plate 101 is provided with a hook 111, and the hook 111 is folded along the free end of the second connecting plate 102 to the outside of the lifting lug 100 and is disposed at an acute angle with the second connecting plate 102. When the lifting lug 100 and the air-conditioning indoor unit 502 are used, the hook 111 is reversely hooked in the mounting hole of the air-conditioning indoor unit 502, so that the lifting lug 100 and the air-conditioning indoor unit 502 are pre-positioned, an operator does not need to hold the lifting lug 100 at the moment, hands of the operator are released, and then the lifting lug 100 is fixedly connected with the air-conditioning indoor unit 502 through the matching of the screw and the second connecting hole 104 on the second connecting plate 102. Through adopting the fixed mode that couple 111 adds the screw, be convenient for install and dismantle, alleviate operating personnel's intensity of labour, improved the installation effectiveness, this structure has also improved the load-carrying capacity of lug 100 simultaneously, has increased the rigidity and the stability of lug 100, makes lug 100 have good performance.
In some embodiments, the second connection plate 102 is provided with a third connection hole 109, and the third connection hole 109 is a kidney-shaped hole. The second connecting hole 104 and the third connecting hole 109 are connected with an assembly side plate of the air-conditioning indoor unit 502 through screws, and the connection strength of the second connecting plate 102 and the air-conditioning indoor unit 502 is improved through the combination of the second connecting hole 104 and the third connecting hole 109. Meanwhile, as the number of the connecting holes on the second connecting plate 102 is large, the mutual positions are difficult to reach ideal positions, and the positions may need to be adjusted during assembly, in the embodiment, the third connecting holes 109 are waist-shaped holes, so that the mounting positions can be conveniently adjusted to adapt to assembly errors, rework is not needed, and the mounting efficiency and the assembly quality are improved.
According to the air-conditioning indoor unit 502 of the second aspect of the embodiment of the present invention, the air-conditioning indoor unit 502 employs all the technical solutions of the lifting lug 100 in the above embodiments, and all the beneficial effects produced by the lifting lug 100 are also achieved by the air-conditioning indoor unit 502, and are not described herein again.
According to the air conditioner of the third aspect of the embodiment of the present invention, the air-conditioning indoor unit 502 adopts all the technical solutions of the air-conditioning indoor unit 502 in the above embodiments, and the air conditioner has all the beneficial effects produced by the air-conditioning indoor unit 502, which are also the same and will not be described herein again.
Referring to fig. 6 to 8, in order to illustrate the press forming method of the shackle 100 according to the fourth aspect of the present invention, it should be noted that the following description is only exemplary and not a specific limitation of the invention. The specific structure of the lifting lug 100 can be shown in fig. 1-4.
Referring to fig. 6, as a first embodiment of the press forming method of the shackle 100 of the present invention, the method includes the steps of:
step S610, providing a sheet metal part;
it should be noted that the specific material of the sheet metal part is selected according to the type of the object to be lifted by the lifting lug 100, and for the lifting lug 100 with a large bearing weight, the sheet metal part made of a metal material is selected.
In some embodiments, the thickness of the sheet metal part is more than 1mm, for example, the sheet metal lifting lug 100 in the field of existing commercial air conditioners (of ducted air conditioners, cold air heaters, seat cranes, and the like) has a large weight, and the lifting lug 100 generally adopts a sheet metal with a thickness of 1.0mm to 2.5mm as a load-bearing part.
Step S620, blanking the sheet metal part to obtain a preprocessed part, wherein the preprocessed part comprises a first connecting plate 101 and a second connecting plate 102, the first connecting plate 101 is provided with a first connecting hole 103, and the second connecting plate 102 is provided with a second connecting hole 104;
it should be noted that, corresponding structures may be punched according to actual needs, for example, two material connecting plates 110 may be respectively disposed on two sides of the second connecting plate 102, and the material connecting plates 110 are formed by extending outward from one side of the second connecting plate 102. The connecting plate 110 extends and protrudes towards two sides of the second connecting plate 102, so that the attaching area of the connecting plate and the assembling surface can be increased, the friction force is increased, and the bearing capacity is improved.
Step 630, removing burrs on the edge of the first connecting plate 101, the edge of the first connecting hole 103 and the edge of one end of the second connecting plate 102 far away from the first connecting plate 101 to obtain a to-be-stamped part;
and step S640, performing punch forming on the piece to be stamped.
The sheet metal lifting lug 100 in the field of the existing commercial air conditioner (of a duct machine, a cold air heater, a seat crane and the like) has the following surface treatment modes: 1. no treatment is carried out, only a common blanking piece is used, and burrs exist; 2. and (5) polishing the surface and spraying paint. Polishing the metal plate to remove the protruded long burrs, and spraying paint to cover the rough fracture zone and the polished short burrs; 3. and (6) edge folding. The cut surface is punched to be overlapped and flattened, burrs are beaten into the inner part and are not exposed any more, and therefore the human body is prevented from being injured. In the actual operation process, the hidden danger of cutting injury exists when a human body (particularly a human hand) contacts with the electric heating device; polishing and painting are both secondary processing after blanking, the processing technology is complex, and the cost is high; the overlap edge is generally only suitable for sheet metal with the material thickness less than or equal to 1.0mm, and cannot be used for sheet metal parts with the thickness exceeding the value. Therefore, the press forming method of the shackle 100 according to the present invention has at least the following advantages: the manufacturing method improves the existing punch forming manufacturing process, directly removes burrs in the blanking process, does not need secondary processing on the formed lifting lug 100, improves the production efficiency and the product quality, and reduces the production cost.
In some embodiments, the method of manufacturing the shackle 100 is performed using a progressive die. Progressive dies (also known as progressive dies and skip dies) are dies that complete multiple processes simultaneously at several different positions in one stroke of a press. The blanking part is formed step by step in a continuous die, the continuous forming is a process method with centralized working procedures, and various working procedures such as trimming, notching, grooving, punching, plastic deformation, blanking and the like can be completed on one die. The punching die can complete the punching process, the forming process and even the assembling process, and a plurality of complex stamping parts needing multi-process stamping can be completely formed on one die. It can be seen that the manufacturing of the shackle 100 using the progressive die can greatly improve the production efficiency.
Referring to fig. 7, as a second embodiment of the method for press-forming the shackle 100 of the present invention, the first connection plate 101 of the pre-processing member is provided with an opening 106 communicating with the first connection hole 103, and the fixture can be conveniently installed in the first connection hole 103 along the opening 106 by providing the opening 106 communicating with the first connection hole 103. In addition, the edge position of the opening 106 may also generate burrs after blanking, and during the operation, the edge position is likely to touch the human body, and there is a risk that the human body is cut, so the step S630 further includes:
step S710 removes the burr at the edge of the opening 106.
Referring to fig. 8, as a second embodiment of the press forming method of the shackle 100 of the present invention, the step S630 further includes the steps of:
step S810, performing fine cutting on the broken belt to remove burrs;
and step S820, carrying out rounding and flattening treatment on the precisely cut fracture belt.
Through the above processing, it should be noted that the chamfer 302 is selected to be about r0.3mm, and the ratio of the final collapsed region 303, the bright band 301 and the chamfer 302 region is about 1:3:1, so that the broken band generating burrs is eliminated. Through the north american UL edge sharpness test, the surface roughness of the lifting lug 100 is significantly reduced, and burrs originally having a height of about 0.02mm to 0.07mm are all cut off cleanly, so that the hand is not injured.
In some embodiments, the stamping forming of the workpiece to be stamped further comprises: carrying out flanging 107 treatment on one end of the first connecting plate 101, which is far away from the second connecting plate 102; bending one end of the second connecting plate 102 far away from the first connecting plate 101 to form a hook 111; the first connecting plate 101 and the second connecting plate 102 are punched, and a reinforcing rib 108 extending from the first connecting plate 101 to the second connecting plate 102 is formed on the inner surface of the lifting lug 100.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (18)
1. The lug, its characterized in that includes:
a first connection plate provided with a first connection hole;
the second connecting plate is connected to the first connecting plate and provided with a second connecting hole;
the cutting prevention part comprises a bright belt and chamfers arranged at two ends of the bright belt;
wherein the cutting prevention part is provided on an edge of the first connection plate, an edge of the first connection hole, and an edge of one end of the second connection plate away from the first connection plate.
2. The shackle of claim 1, wherein the cut resistant portion is formed by stamping.
3. The shackle of claim 1, wherein the first connecting plate and the second connecting plate both have a thickness of 1mm or more.
4. The shackle of claim 3, wherein the first connecting plate has a thickness that is the same as a thickness of the second connecting plate.
5. The lifting lug according to claim 1, wherein two connecting plates are respectively disposed at both sides of the second connecting plate, the connecting plates extend outward from one side of the second connecting plate, and the cutting preventing portions are disposed at both sides of the connecting plates.
6. The shackle according to claim 1, wherein the first connection plate is provided with an opening communicating with the first connection hole, and an edge of the opening is provided with the cut prevention portion.
7. The shackle of claim 1, wherein the chamfer is a fillet.
8. The lifting lug according to claim 1, wherein the end of the first connecting plate remote from the second connecting plate is provided with a flange.
9. The shackle of claim 1, further comprising a reinforcing bar extending from the first connecting plate to the second connecting plate.
10. The shackle of claim 1, wherein the first connection hole is a kidney-shaped hole.
11. The shackle of claim 1, wherein the second connecting plate is provided with a third connecting hole, and the third connecting hole is a kidney-shaped hole.
12. The shackle of claim 1, wherein a hook is provided at an end of the second connecting plate remote from the first connecting plate.
13. An indoor unit of an air conditioner, comprising the shackle of any one of claims 1 to 12.
14. An air conditioner characterized by comprising the indoor unit of an air conditioner as set forth in claim 13.
15. The punch forming method of the lifting lug is characterized by comprising the following steps:
providing a sheet metal part;
blanking the sheet metal part to obtain a preprocessed part, wherein the preprocessed part comprises a first connecting plate and a second connecting plate, the first connecting plate is provided with a first connecting hole, and the second connecting plate is provided with a second connecting hole;
removing burrs on the edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate;
and carrying out punch forming on the pretreatment piece.
16. The punch forming method of the shackle according to claim 15, wherein: the stamping forming method is completed by adopting a progressive die.
17. The punch forming method of the shackle according to claim 15, wherein: the first connecting plate of preliminary treatment piece is provided with the intercommunication the opening of first connecting hole, get rid of the edge of first connecting plate, the edge of first connecting hole with the second connecting plate is kept away from burr on the edge of the one end of first connecting plate still includes following step:
and removing burrs on the edge of the opening.
18. The press forming method of the shackle according to any one of claims 15 to 17, wherein: the method comprises the following steps of forming a corner collapse area, a bright belt and a fracture belt on the edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate, and removing burrs on the edge of the first connecting plate, the edge of the first connecting hole and the edge of one end, far away from the first connecting plate, of the second connecting plate, wherein the method comprises the following steps:
finely cutting the fractured strip to remove burrs;
and carrying out rounding and flattening on the broken belt after the fine cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243636.4A CN111322681A (en) | 2020-03-31 | 2020-03-31 | Lifting lug, air conditioner indoor unit, air conditioner and punch forming method of lifting lug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243636.4A CN111322681A (en) | 2020-03-31 | 2020-03-31 | Lifting lug, air conditioner indoor unit, air conditioner and punch forming method of lifting lug |
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| CN111322681A true CN111322681A (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010243636.4A Pending CN111322681A (en) | 2020-03-31 | 2020-03-31 | Lifting lug, air conditioner indoor unit, air conditioner and punch forming method of lifting lug |
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| CN (1) | CN111322681A (en) |
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