CN102814622A - Manufacture method for fork of forklift - Google Patents
Manufacture method for fork of forklift Download PDFInfo
- Publication number
- CN102814622A CN102814622A CN2011101611507A CN201110161150A CN102814622A CN 102814622 A CN102814622 A CN 102814622A CN 2011101611507 A CN2011101611507 A CN 2011101611507A CN 201110161150 A CN201110161150 A CN 201110161150A CN 102814622 A CN102814622 A CN 102814622A
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- Prior art keywords
- fork
- pallet fork
- fixed form
- bending
- manufacturing approach
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000004080 punching Methods 0.000 claims abstract description 5
- 239000002918 waste heat Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to a manufacture method for a fork of a forklift. The manufacture method comprises the following steps of: selecting a rectangular or quadrate long strip-shaped steel with the same cross section as that of the fork to be processed; cutting the long strip-shaped steel in length according to a technical requirement, and cutting to obtain various inclined faces as required; partially heating the cut proximate matters at bending parts; partially upsetting and forming in dies, and bending a convex face at an upsetting part as an internal surface to form a fork shape by utilizing afterheat; extruding a protuberance inside a bending angle of the fork to the outside of the bending angle through a punching die so as to form a thickened external surface of a fork bottom; cutting two ends of the fork as required; and then carrying out processing programs.
Description
Technical field
The present invention relates to mechanical manufacturing field, be meant a kind of manufacturing approach of fork of forklift truck especially.
Background technology
Pallet fork is a kind of steel component of L type, is installed on fork truck or the lifting engineering truck to be used to hold up various weights.According to the weight capacity of pallet fork, the pallet fork of all size includes a vertical section of taking out and a horizontal segment that is used for fixing fork truck.According to the pallet fork safe requirement, stipulate in the pallet fork standard that the thickness of horizontal segment root is more than 1.2 times of other position thickness, production brings certain difficulty to pallet fork in this requirement.
The main method of domestic production pallet fork blank is with forging making after the steel billet heating at present.Employing forges explained hereafter pallet fork blank needs large-tonnage to forge bell and Large-scale Heater.To consume mass energy in process of production, and produce environmental pollution; Labor intensity of operating personnel is big in process of production simultaneously.
Utilizing common method for upsetting to add man-hour,, making the jumping-up part surface seem abundant because of the used mould reason of jumping-up; But in fact, the metallic crystal density of this part reduces, and at this moment carries out bending at this place and handles; The mode shown in China's patent CN200810013709 for example becomes the outside of bent angle with jut, can compensate the problem that outer surface stretches and causes crystal to descend when bending; Realize that also the pallet fork root thickness increases; But in fact, not can realize compensation, the also inreal safety problem that solves because of not increasing in the inner crystalline density of projection.
Summary of the invention
The purpose of this invention is to provide a kind of high efficiency, high-quality, low cost, oligosaprobic pallet fork manufacturing approach.
Fork of forklift truck manufacturing approach of the present invention is following:
A chooses rectangle identical with pallet fork to be processed cross section or square long strip type steel;
B cuts off the long strip type steel by technological requirement length, and cuts needed each inclined-plane;
C, the section bar after the cutting are in the bending part local heat, and gathering stock becomes the one side convex shaped in mould, and utilizes waste heat, is that inner surface is bent into the pallet fork shape with jumping-up position crowning;
D utilizes diel again, and with the projections press at position in the pallet fork bending angle outside to bent angle, the outer surface that forms the pallet fork root thickens; Described diel includes a fixed form and a moving platen; Described fixed form and moving platen are respectively the L type; There is a little L type at position, said fixed form L type base angle with the identical groove of pallet fork blank width; Said fixed form is fixed on the workbench; Described moving platen is connected on the press, under the drive of press, realizes the matched moulds with fixed form, accomplishes punching course;
E cuts the pallet fork two ends on request;
F, its handling procedure of back.
The pallet fork blank is shaped as a lateral process behind the described gathering stock.
Described pallet fork is in the bending process, and jut is positioned at the inside of bent angle.
Said is heating in medium frequency in local heat.
The invention has the advantages that,
Thinking of the present invention is that it is inner that this technology jut is at first put into the bending angle, when bending; Make the crystalline density of corner outer surface further reduce, and then utilize mould, whole projections press are outside to bent angle; In this extrusion process, the metal inside crystal structure changes, and mends after real the crystalline density that originally reduces outstanding again; Realized the real purpose that thickens, simultaneously, in extrusion process; Because of crook external crystal density reduces, reduced resistance, also just realized requirements of saving energy.
Description of drawings
Fig. 1, process route chart of the present invention.
Fig. 2, upsetting process sketch map of the present invention.
Fig. 3, blank bending sketch map of the present invention.
Fig. 4, punching course sketch map of the present invention.
The specific embodiment
To Fig. 4, describe embodiments of the invention below in conjunction with accompanying drawing 1 in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar parts or the parts with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain this patent, and can not be interpreted as restriction this patent.
Fork of forklift truck manufacturing approach of the present invention is following, sees Fig. 1:
A chooses rectangle identical with pallet fork to be processed cross section or square long strip type steel;
B cuts off the long strip type steel by technological requirement length, and cuts needed each inclined-plane;
C, the section bar 2 after the cutting are in the bending part local heat, and gathering stock becomes the one side convex shaped in mould 1, and utilizes waste heat, is that inner surface is bent into pallet fork shape (referring to Fig. 3) with jumping-up position crowning 3;
D utilizes diel again, and with the projections press at position in the pallet fork bending angle outside to bent angle, the outer surface that forms the pallet fork root thickens; Described diel includes a fixed form 6 and a moving platen 5; Described fixed form 6 is respectively the L type with moving platen 5; There is a little L type at position, said fixed form L type base angle with the identical groove 7 of pallet fork blank width; Said fixed form is fixed on the workbench; Described moving platen is connected on the press, under the drive of press, realizes the matched moulds with fixed form, accomplishes punching course;
E cuts the pallet fork two ends on request;
F, the post-processed program.
The pallet fork blank is shaped as a lateral process behind the described gathering stock.
Described pallet fork is in the bending process, and jut is positioned at the inside of bent angle.
Said is heating in medium frequency in local heat.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (4)
1. a fork of forklift truck manufacturing approach is characterized in that comprising the steps:
A chooses rectangle identical with pallet fork to be processed cross section or square long strip type steel;
B cuts off the long strip type steel by technological requirement length, and cuts needed each inclined-plane;
C, the section bar after the cutting are in the bending part local heat, and gathering stock becomes the one side convex shaped in mould, and utilizes waste heat, is that inner surface is bent into the pallet fork shape with jumping-up position crowning;
D utilizes diel again, and with the projections press at position in the pallet fork bending angle outside to bent angle, the outer surface that forms the pallet fork root thickens; Described diel includes a fixed form and a moving platen; Described fixed form and moving platen are respectively the L type; There is a little L type at position, said fixed form L type base angle with the identical groove of pallet fork blank width; Said fixed form is fixed on the workbench; Described moving platen is connected on the press, under the drive of press, realizes the matched moulds with fixed form, accomplishes punching course;
E cuts the pallet fork two ends on request;
F, its handling procedure of back.
2. fork of forklift truck manufacturing approach according to claim 1 is characterized in that, the pallet fork blank is shaped as a lateral process behind the described gathering stock.
3. fork of forklift truck manufacturing approach according to claim 1 is characterized in that, described pallet fork is in the bending process, and jut is positioned at the inside of bent angle.
4. fork of forklift truck manufacturing approach according to claim 1 is characterized in that, said is heating in medium frequency in local heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110161150.7A CN102814622B (en) | 2011-06-09 | 2011-06-09 | Manufacture method for fork of forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110161150.7A CN102814622B (en) | 2011-06-09 | 2011-06-09 | Manufacture method for fork of forklift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102814622A true CN102814622A (en) | 2012-12-12 |
| CN102814622B CN102814622B (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110161150.7A Active CN102814622B (en) | 2011-06-09 | 2011-06-09 | Manufacture method for fork of forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102814622B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555824A (en) * | 2014-11-25 | 2015-04-29 | 宁波韧霸货叉有限公司 | Forklift fork and preparation method thereof |
| CN109746644A (en) * | 2019-02-19 | 2019-05-14 | 海盐孙氏建新标准件制造有限公司 | A kind of production technology of bent angle bolt |
| CN113042589A (en) * | 2021-03-11 | 2021-06-29 | 山东泰金斯锻造有限公司 | Fork truck front fork bending machine processingequipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987272A (en) * | 1973-07-17 | 1976-10-19 | Lancer Boss Limited | Manufacture of forks for fork lift trucks |
| JPS5265168A (en) * | 1975-11-25 | 1977-05-30 | Daido Steel Co Ltd | Method of making fork having hook |
| JPS52125456A (en) * | 1976-04-15 | 1977-10-21 | Daido Steel Co Ltd | Method of making fork |
| JPS5431064A (en) * | 1977-08-11 | 1979-03-07 | Tonan Tankou Kk | Method of making fork for fork lift |
| HU211798B (en) * | 1990-11-15 | 1996-02-28 | Agromat Gepipari Es Szolgaltat | Process for producing increased service life fork for lift-truck |
| DE10013543A1 (en) * | 2000-03-20 | 2001-09-27 | Cfs Falkenroth Umformtechnik G | Fabrication process for fork arms for forklift trucks is forged completely from a blank in one or stages in a two-part forging die |
| CN101214604A (en) * | 2008-01-07 | 2008-07-09 | 秦绪卿 | Manufacturing process method for fork of forklift truck |
| CN201768849U (en) * | 2010-08-25 | 2011-03-23 | 山东省淄博生建机械厂 | One-step molding machine for section forks |
-
2011
- 2011-06-09 CN CN201110161150.7A patent/CN102814622B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987272A (en) * | 1973-07-17 | 1976-10-19 | Lancer Boss Limited | Manufacture of forks for fork lift trucks |
| JPS5265168A (en) * | 1975-11-25 | 1977-05-30 | Daido Steel Co Ltd | Method of making fork having hook |
| JPS52125456A (en) * | 1976-04-15 | 1977-10-21 | Daido Steel Co Ltd | Method of making fork |
| JPS5431064A (en) * | 1977-08-11 | 1979-03-07 | Tonan Tankou Kk | Method of making fork for fork lift |
| HU211798B (en) * | 1990-11-15 | 1996-02-28 | Agromat Gepipari Es Szolgaltat | Process for producing increased service life fork for lift-truck |
| DE10013543A1 (en) * | 2000-03-20 | 2001-09-27 | Cfs Falkenroth Umformtechnik G | Fabrication process for fork arms for forklift trucks is forged completely from a blank in one or stages in a two-part forging die |
| CN101214604A (en) * | 2008-01-07 | 2008-07-09 | 秦绪卿 | Manufacturing process method for fork of forklift truck |
| CN201768849U (en) * | 2010-08-25 | 2011-03-23 | 山东省淄博生建机械厂 | One-step molding machine for section forks |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555824A (en) * | 2014-11-25 | 2015-04-29 | 宁波韧霸货叉有限公司 | Forklift fork and preparation method thereof |
| CN109746644A (en) * | 2019-02-19 | 2019-05-14 | 海盐孙氏建新标准件制造有限公司 | A kind of production technology of bent angle bolt |
| CN113042589A (en) * | 2021-03-11 | 2021-06-29 | 山东泰金斯锻造有限公司 | Fork truck front fork bending machine processingequipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102814622B (en) | 2014-12-10 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: The manufacturing method of forklift forks Effective date of registration: 20231129 Granted publication date: 20141210 Pledgee: Ningbo Yinzhou Rural Commercial Bank Co.,Ltd. Hengxi Sub branch Pledgor: NINGBO RENBA FORK Co.,Ltd. Registration number: Y2023330002823 |
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