CN108526809A - A kind of trimmer - Google Patents

A kind of trimmer Download PDF

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Publication number
CN108526809A
CN108526809A CN201810466929.1A CN201810466929A CN108526809A CN 108526809 A CN108526809 A CN 108526809A CN 201810466929 A CN201810466929 A CN 201810466929A CN 108526809 A CN108526809 A CN 108526809A
Authority
CN
China
Prior art keywords
baffle
upper mold
lower die
telescopic
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810466929.1A
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Chinese (zh)
Other versions
CN108526809B (en
Inventor
宛正波
颜林海
钱永锋
白刚
谢道春
杨洛才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Hong Ji Plastic Mold Co Ltd
Original Assignee
Dongguan Hong Ji Plastic Mold Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Hong Ji Plastic Mold Co Ltd filed Critical Dongguan Hong Ji Plastic Mold Co Ltd
Priority to CN201810466929.1A priority Critical patent/CN108526809B/en
Publication of CN108526809A publication Critical patent/CN108526809A/en
Application granted granted Critical
Publication of CN108526809B publication Critical patent/CN108526809B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00Restoring or reconditioning objects

Abstract

The invention discloses a kind of trimmers, including working plate, it is equipped with workbench at the top of the working plate and bottom is equipped with baffle-box, the baffle-box intracavity bottom is equipped with multiple damping springs, the damping spring top is equipped with connecting plate, the workbench both sides are equipped with and are equipped with electric telescopic rod, the electric telescopic rod output shaft end is equipped with effect block, the bench-top offers work nest, lower die is equipped in the work nest, the lower die tip offers placing groove and bottom end is equipped with connecting rod, upper mold is equipped at the top of the lower die, the upper mold includes template, the template both sides offer telescopic hole, resetting spring is equipped in the telescopic hole.When carrying out pressing shaping, edge can be preferably bonded with upper mold the mobile phone shell of the present invention so that mobile phone shell can be installed preferably with Mobile phone screen in assembly, to improve the efficiency and quality of shaping.

Description

A kind of trimmer
Technical field
The present invention relates to field of mechanical technique, more particularly to a kind of trimmer.
Background technology
Mobile phone determines that the shell of appearance becomes the vital part of Mobile Industry as consumer commodity.And phone housing It is a quite high field of technical threshold.Phone housing has started metallization trend, especially in high-grade field of mobile phones.It is super Thin type becomes current mainstream, and has an optimistic view of for a long time, and hardware and shell have absolute predominance at ultra-thin aspect.I State is global first big mobile phone manufacture base, so big yield, and the demand of phone housing is well imagined.Outside metallic mobile phone Shell phase has numerous advantages to plastic shell, is first that metallic mobile phone shell can be thinner lighter because the intensity of metal more than Plastics want high.The mainstream of frivolous exactly current mobile phone.Followed by good heat dissipation, the power consumption of mobile phone is higher and higher at present, certain mobile phones Using the chip of low-grade technique, if such mobile phone be entirely possible to using plastic shell in call it is hot, and it is golden It is far better to belong to shell heat dissipation effect.It is electromagnetic radiation again, the ELECTROMAGNETIC RADIATION SHIELDING of metal shell is unquestionably better than plastics Must be much more, radiation is fewer, more advantageous to the health of human body.It is environmental protection again, metal shell can recycle, and Plastics can not recycle, and want many decades that could decompose completely under natural conditions, environmental pollution is big.But metal shell is producing When, can due to casting and die casting it is inaccurate the problems such as cause shell that cannot carry out being connected installation with Mobile phone screen well.
Therefore, it is necessary to solve the above problems to invent a kind of trimmer.
Invention content
The purpose of the present invention is to provide a kind of trimmer, carried out in telescopic hole and casing by being equipped with using telescopic rod Mobile, the position of baffle and briquetting can be moved so that the pressure position that upper mold acts in mobile phone shell is changed, and is made At the both sides of the edge of mobile phone shell metal position can carry out pressing deformation, to solve traditional casting and die casting is inaccurate leads The problem of causing shell that cannot carry out being connected installation with Mobile phone screen well.
To achieve the above object, the present invention provides the following technical solutions:A kind of trimmer, including working plate, the work It is equipped with workbench at the top of plate and bottom is equipped with baffle-box, the baffle-box intracavity bottom is equipped with multiple damping springs, described to subtract It shakes spring top and is equipped with connecting plate, the workbench both sides are equipped with and are equipped with electric telescopic rod, the electric telescopic rod output shaft End is equipped with effect block, and the bench-top offers work nest, is equipped with lower die in the work nest, the lower die tip is opened It is equipped with connecting rod equipped with placing groove and bottom end, is equipped with upper mold at the top of the lower die, the upper mold includes template, the mould Plate both sides offer telescopic hole, are equipped with resetting spring in the telescopic hole, the flexible bore ends are embedded with casing, the set Telescopic rod is equipped in pipe, the telescopic rod end is equipped with baffle, and the baffle bottom side is equipped with briquetting, is set at the top of the upper mold There are screw rod, the screw tip to be equipped with fixed plate, hydraulic cylinder is equipped at the top of the fixed plate.
Preferably, the working plate both sides are equipped with rack, and the rack is set as " Π " shape, and the hydraulic cylinder is set to The output shaft end at the top of rack, the hydraulic cylinder is fixedly connected with fixed plate.
Preferably, the baffle-box is fixedly connected with working plate bottom, and the connecting plate passes through damping spring and baffle-box Intracavity bottom is flexibly connected, and the connecting rod is through workbench and working plate and bottom end extends in baffle-box and connecting plate top It is fixedly connected, the lower die is flexibly connected by connecting rod and damping spring with placing groove.
Preferably, the quantity of the telescopic hole, resetting spring, telescopic rod, casing, briquetting and baffle is set as two and leads to It crosses template axles to be symmetrical arranged, the briquetting section is set as trapezoidal.
Preferably, described resetting spring one end is fixedly connected with telescopic hole inner wall of end and the other end is fixed with telescopic rod Connection, described sleeve pipe is embedded at the end of telescopic hole and one end extends to the outside of telescopic hole, and the telescopic rod is by resetting bullet Spring is flexibly connected with telescopic hole.
Preferably, the baffle plate setting is "the" shape, and the fixed plate bottom offers screw hole, the screw tip It is embedded in screw hole, the upper mold is detachably connected by screw rod and screw hole with fixed plate, and the rack is equipped with control panel.
The technique effect and advantage of the present invention:
1, it is moved in telescopic hole and casing by being equipped with using telescopic rod, the position of baffle and briquetting can carry out It is mobile so that the pressure position that upper mold acts in mobile phone shell is changed so that at the both sides of the edge of mobile phone shell metal position It can carry out pressing deformation so that mobile phone shell can be installed preferably with Mobile phone screen in assembly;
2, by being equipped with connecting rod in lower die bottom, when lower die is acted on by the pressure that upper mold pushes, the company of lower die bottom Extension bar moves down, and the damping spring squeezed in baffle-box bounces back, and lower die carries out movement slowly so that mobile phone shell is being pressed Avoid the occurrence of that pressure in a flash is excessive to cause mobile phone shell unnecessary deformation occur when closing shaping;
3, by the way that the briquetting of the baffle and trapezoid cross section of "the" shape is arranged in template both sides, when mobile phone shell is being pressed When closing shaping, edge can be preferably bonded with upper mold, to improve the efficiency and quality of shaping.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Structural schematic diagram when Fig. 2 is the work of the present invention.
Fig. 3 is detailed structure schematic diagram at A in Fig. 1 of the present invention.
In figure:1 working plate, 2 baffle-boxs, 3 damping springs, 4 connecting plates, 5 work nests, 6 lower dies, 7 placing grooves, 8 connecting rods, 9 upper molds, 10 templates, 11 telescopic holes, 12 resetting springs, 13 casings, 14 telescopic rods, 15 baffles, 16 briquettings, 17 screw rods, 18 are fixed Plate, 19 hydraulic cylinders, 20 control panels, 21 racks, 22 workbench, 23 electric telescopic rods, 24 effect blocks.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of trimmer as shown in Figs. 1-3, including working plate 1,1 top of the working plate is equipped with work Make platform 22 and bottom is equipped with baffle-box 2,2 intracavity bottom of the baffle-box is equipped with multiple damping springs 3, the damping spring 3 Top is equipped with connecting plate 4, and 22 both sides of the workbench are equipped with and are equipped with electric telescopic rod 23,23 output shaft of the electric telescopic rod End is equipped with effect block 24, and 22 top of the workbench offers work nest 5, lower die 6 is equipped in the work nest 5, under described 6 top of mould offers placing groove 7 and bottom end is equipped with connecting rod 8, and 6 top of the lower die is equipped with upper mold 9, the upper mold 9 Including template 10,10 both sides of the template offer telescopic hole 11, and resetting spring 12 is equipped in the telescopic hole 11, described to stretch 11 end of shrinkage cavity is embedded with casing 13, and telescopic rod 14 is equipped in described sleeve pipe 13, and 14 end of the telescopic rod is equipped with baffle 15, institute It states 15 bottom side of baffle and is equipped with briquetting 16,9 top of the upper mold is equipped with screw rod 17, and 17 top of the screw rod is equipped with fixed plate 18,18 top of the fixed plate is equipped with hydraulic cylinder 19.
Further, in the above-mentioned technical solutions, 1 both sides of the working plate are equipped with rack 21, and the rack 21 is set as " Π " shape, the hydraulic cylinder 19 are set to the top of rack 21, output shaft end and the fixed plate 18 of the hydraulic cylinder 19 It is fixedly connected, its output shaft pushes fixed plate 18 to be moved when hydraulic cylinder 19 starts.
Further, in the above-mentioned technical solutions, the baffle-box 2 is fixedly connected with 1 bottom of working plate, the connecting plate 4 are flexibly connected by damping spring 3 with 2 intracavity bottom of baffle-box, and the connecting rod 8 is through workbench 22 and working plate 1 and bottom End extends in baffle-box 2 and is fixedly connected with 4 top of connecting plate, and the lower die 6 passes through connecting rod 8 and damping spring 3 and placement Slot 7 is flexibly connected, and the structure of a buffering is provided the movement of lower die 6 using damping spring 3.
Further, in the above-mentioned technical solutions, the telescopic hole 11, resetting spring 12, telescopic rod 14, casing 13, pressure The quantity of block 16 and baffle 15 is set as two and is arranged by 10 axial symmetry of template, and 16 section of the briquetting is set as trapezoidal.
Further, in the above-mentioned technical solutions, 12 one end of the resetting spring is fixed with 11 inner wall of end of telescopic hole and is connected Connect and the other end be fixedly connected with telescopic rod 14, described sleeve pipe 13 is embedded at the end of telescopic hole 11 and one end extend to it is flexible The outside in hole 11, the telescopic rod 14 are flexibly connected by resetting spring 12 with telescopic hole 11, and telescopic rod 14 can be in casing 13 It is moved, while being resetted using resetting spring 12.
Further, in the above-mentioned technical solutions, the baffle 15 is set as down "the" shape, 18 bottom of the fixed plate Screw hole is offered, 17 top of the screw rod is embedded in screw hole, and the upper mold 9 is removable by screw rod 17 and screw hole and fixed plate 18 Connection is unloaded, the rack 21 is equipped with control panel 20 and can be replaced to upper mold 9 by using the mode being detachably connected It is processed with the mobile phone shell for adapting to different.
This practicality operation principle:
With reference to Figure of description 1-2, when work, it would be desirable to which what the mobile phone shell of processing was positioned over that 6 top of lower die offers puts It sets in slot 7, hydraulic cylinder 19 is then started by control panel 20 so that the work of hydraulic cylinder 19 makes consolidating for its output shaft bottom end Fixed board 18 moves down, and the upper mold 9 of 18 bottom of fixed plate is moved down carries out pressing shaping to the mobile phone shell in 6 placing groove 7 of lower die, works as lower die 6 are squeezed by upper mold 9 when pressing, and the pressure effect pushed, the connecting rod 8 of 6 bottom of lower die moves down, and squeezes subtracting in baffle-box 2 Shake spring 3 bounces back, and lower die 6 carries out movement slowly so that mobile phone shell avoids the occurrence of in a flash when carrying out pressing shaping Pressure is excessive to cause mobile phone shell unnecessary deformation occur, while the work of electric telescopic rod 23 makes the effect block of its output shaft end 24 act on and squeeze 9 structure of upper mold so that the side of mobile phone shell can carry out pressing shaping;
With reference to Figure of description 3, when the effect block 24 of 23 output shaft end of electric telescopic rod acts in 9 structure of upper mold When baffle 15, squeezes 15 stress of baffle and generate displacement so that the telescopic rod 14 of 15 side of baffle moves in casing 13, makes simultaneously The resetting spring 12 in the extruding telescopic hole 11 of telescopic rod 14 is obtained, to which the position of baffle 15 and briquetting 16 is moved so that on The pressure position that mould 9 acts in mobile phone shell is changed so that metal position can be pressed at the both sides of the edge of mobile phone shell Close deformation so that mobile phone shell can be installed preferably with Mobile phone screen in assembly.
Finally it should be noted that:The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's Within protection domain.

Claims (6)

1. a kind of trimmer, including working plate (1), it is characterised in that:Be equipped at the top of the working plate (1) workbench (22) and Bottom is equipped with baffle-box (2), and baffle-box (2) intracavity bottom is equipped with multiple damping springs (3), damping spring (3) top End is equipped with connecting plate (4), and workbench (22) both sides are equipped with and are equipped with electric telescopic rod (23), the electric telescopic rod (23) Output shaft end is equipped with effect block (24), and work nest (5) is offered at the top of the workbench (22), is set in the work nest (5) There is lower die (6), lower die (6) top offers placing groove (7) and bottom end is equipped with connecting rod (8), lower die (6) top Equipped with equipped with upper mold (9), the upper mold (9) includes template (10), and template (10) both sides offer telescopic hole (11), institute It states and is equipped with resetting spring (12) in telescopic hole (11), telescopic hole (11) end is embedded with casing (13), described sleeve pipe (13) Interior to be equipped with telescopic rod (14), telescopic rod (14) end is equipped with baffle (15), and baffle (15) bottom side is equipped with briquetting (16), it is equipped with screw rod (17) at the top of the upper mold (9), fixed plate (18), the fixed plate are equipped at the top of the screw rod (17) (18) top is equipped with hydraulic cylinder (19).
2. a kind of trimmer according to claim 1, it is characterised in that:Working plate (1) both sides are equipped with rack (21), The rack (21) is set as " Π " shape, and the hydraulic cylinder (19) is set to the top of rack (21), the hydraulic cylinder (19) output shaft end is fixedly connected with fixed plate (18).
3. a kind of trimmer according to claim 1, it is characterised in that:The baffle-box (2) and working plate (1) bottom are solid Fixed connection, the connecting plate (4) are flexibly connected by damping spring (3) with baffle-box (2) intracavity bottom, the connecting rod (8) It extends in baffle-box (2) through workbench (22) and working plate (1) and bottom end and is fixedly connected with connecting plate (4) top, it is described Lower die (6) is flexibly connected by connecting rod (8) and damping spring (3) with placing groove (7).
4. a kind of trimmer according to claim 1, it is characterised in that:The telescopic hole (11), is stretched resetting spring (12) Contracting bar (14), casing (13), briquetting (16) and baffle (15) quantity be set as two and be arranged by template (10) axial symmetry, Briquetting (16) section is set as trapezoidal.
5. a kind of trimmer according to claim 1, it is characterised in that:Described resetting spring (12) one end and telescopic hole (11) inner wall of end is fixedly connected and the other end is fixedly connected with telescopic rod (14), and described sleeve pipe (13) is embedded at telescopic hole (11) end and one end extends to the outside of telescopic hole (11), and the telescopic rod (14) passes through resetting spring (12) and telescopic hole (11) it is flexibly connected.
6. a kind of trimmer according to claim 1, it is characterised in that:The baffle (15) is set as down "the" shape, Fixed plate (18) bottom offers screw hole, and screw rod (17) top is embedded in screw hole, and the upper mold (9) passes through screw rod (17) it is detachably connected with fixed plate (18) with screw hole, the rack (21) is equipped with control panel (20).
CN201810466929.1A 2018-05-16 2018-05-16 Shaping machine Active CN108526809B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810466929.1A CN108526809B (en) 2018-05-16 2018-05-16 Shaping machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810466929.1A CN108526809B (en) 2018-05-16 2018-05-16 Shaping machine

Publications (2)

Publication Number Publication Date
CN108526809A true CN108526809A (en) 2018-09-14
CN108526809B CN108526809B (en) 2024-04-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109484048A (en) * 2018-12-25 2019-03-19 苏州市铭将意电子科技有限公司 A kind of packaging bag production printing equipment and printing process

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10156597A (en) * 1996-11-25 1998-06-16 Watanabe Giken Kk Variable type press die construction
KR20080055084A (en) * 2006-12-14 2008-06-19 (주)파버나인 Manufacturing apparatus and method thereof for mobile phone housing
CN202162282U (en) * 2011-07-25 2012-03-14 天津双鑫机械制造有限公司 Support shaping and stamping device for automobile shock absorber
KR101336954B1 (en) * 2013-07-05 2013-12-04 주식회사 에스아이 플렉스 Die cutting molding apparatus for preventing a product from getting imprinted
CN205800190U (en) * 2016-04-29 2016-12-14 苏州嘉太材料科技有限公司 Tool for phone housing pressing
CN106583567A (en) * 2017-02-13 2017-04-26 李志东 Anti-deformation machining die
CN106734474A (en) * 2016-12-08 2017-05-31 无锡市彩云机械设备有限公司 A kind of metallic article stamping machine
CN206492866U (en) * 2017-02-13 2017-09-15 平湖市精铭模具有限公司 A kind of automobile cover rolling fetal membrane quickly exchanges device for
CN206763727U (en) * 2017-04-25 2017-12-19 沧州鑫晟汽车模具有限公司 A kind of pneumatic stamping machine
CN107716683A (en) * 2017-11-10 2018-02-23 镇江金鑫有色合金有限公司 A kind of non-ferrous alloy decompressor for being easy to the demoulding
CN107900174A (en) * 2017-12-14 2018-04-13 温州市南云金属制品有限公司 A kind of metal product press machine and processing method
CN208437894U (en) * 2018-05-16 2019-01-29 东莞鸿绩塑胶模具有限公司 A kind of trimmer

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10156597A (en) * 1996-11-25 1998-06-16 Watanabe Giken Kk Variable type press die construction
KR20080055084A (en) * 2006-12-14 2008-06-19 (주)파버나인 Manufacturing apparatus and method thereof for mobile phone housing
CN202162282U (en) * 2011-07-25 2012-03-14 天津双鑫机械制造有限公司 Support shaping and stamping device for automobile shock absorber
KR101336954B1 (en) * 2013-07-05 2013-12-04 주식회사 에스아이 플렉스 Die cutting molding apparatus for preventing a product from getting imprinted
CN205800190U (en) * 2016-04-29 2016-12-14 苏州嘉太材料科技有限公司 Tool for phone housing pressing
CN106734474A (en) * 2016-12-08 2017-05-31 无锡市彩云机械设备有限公司 A kind of metallic article stamping machine
CN106583567A (en) * 2017-02-13 2017-04-26 李志东 Anti-deformation machining die
CN206492866U (en) * 2017-02-13 2017-09-15 平湖市精铭模具有限公司 A kind of automobile cover rolling fetal membrane quickly exchanges device for
CN206763727U (en) * 2017-04-25 2017-12-19 沧州鑫晟汽车模具有限公司 A kind of pneumatic stamping machine
CN107716683A (en) * 2017-11-10 2018-02-23 镇江金鑫有色合金有限公司 A kind of non-ferrous alloy decompressor for being easy to the demoulding
CN107900174A (en) * 2017-12-14 2018-04-13 温州市南云金属制品有限公司 A kind of metal product press machine and processing method
CN208437894U (en) * 2018-05-16 2019-01-29 东莞鸿绩塑胶模具有限公司 A kind of trimmer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109484048A (en) * 2018-12-25 2019-03-19 苏州市铭将意电子科技有限公司 A kind of packaging bag production printing equipment and printing process
CN109484048B (en) * 2018-12-25 2020-12-08 上海柏连艾广告有限公司 Printing device and printing method for packaging bag production

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