CN102091915B - Process for producing elevator draw rod - Google Patents
Process for producing elevator draw rod Download PDFInfo
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- CN102091915B CN102091915B CN2010106186858A CN201010618685A CN102091915B CN 102091915 B CN102091915 B CN 102091915B CN 2010106186858 A CN2010106186858 A CN 2010106186858A CN 201010618685 A CN201010618685 A CN 201010618685A CN 102091915 B CN102091915 B CN 102091915B
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- pull bar
- oil cylinder
- elevator
- counterdie
- fixed
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Abstract
The invention discloses a process for producing an elevator draw rod. The method comprises the following steps of: (1) heating one end of blank for the elevator draw rod; (2) placing the heated blank for the elevator draw rod in a mould; (3) starting a first oil cylinder to ensure that a piston rod of the first oil cylinder drives an upper mould to move downward to close the mould, wherein after the mould is closed, the heated end of the blank for the elevator draw rod is positioned in an accommodation space formed by a first accommodation groove and a second accommodation groove; (4) starting a second oil cylinder to ensure that a piston rod of the second oil cylinder drives an ejection rod to move and extrude the heated end of the blank for the elevator draw rod, and continuously upsetting the heated end of the blank for the elevator draw rod with the extrusion of the ejection rod; (5) moving the piston rod of the first oil cylinder upwards to drive the upper mould to move upward to open the mould; (6) forging the mould; and (7) drilling the head of the elevator draw rod. The process for producing the elevator draw rod improves the intensity of the molded elevator draw rod, and the molding quality of the elevator draw rod, and the molding efficiency is high.
Description
Technical field
The present invention relates to the production technology of elevator with pull bar.
Background technology
In order to make elevator easy for installation with promoting cable; Prevent to get loose; Improve the security of elevator operation, be to be to be to disclose a kind of fag end cover of wedge combination in the patent documentation of 2007.12.5 2006.5.12 Granted publication day in the patent No. 200620058855.0 applyings date, includes fag end voussoir, fag end cover of wedge, pull bar; Wherein the fag end voussoir is inserted in the end of fag end cover of wedge hollow cavity; Hawser C is located on the fag end voussoir, and the A of pull bar end is oblate head, and the A of pull bar end is packed in the other end of fag end cover of wedge hollow cavity through the cover of wedge pin.As to guarantee the bonding strength of fag end cover of wedge and pull bar, and the intensity of the shear resistance of cover of wedge pin and the oblate head of pull bar is vital, and traditional method adopts free compression, and die forging forms the head of pull bar again; The mould that free compression adopted is as shown in Figure 1, comprises the die holder plate, on the die holder plate, is fixed with guide pad, in a side of die holder plate fixed head is installed; Oil cylinder is installed on the fixed head, is connected with push rod on the piston rod of oil cylinder, be fixed with block, when making pull bar at the opposite side of die holder plate; Stock is placed on the guide pad, then, utilizes heater in end heating near baffle plate; After stock is heated to uniform temperature, start oil cylinder, the piston rod of oil cylinder drives the push rod motion; Under the effect of push rod and block, near the stock of block one end by jumping-up after, carry out the head that die forging forms pull bar again; Adopt the defective of the said equipment moulding pull bar to be: when the draw ratio of stock was big, in the process of freely upsetting, stock was at heating region; Unstability produces flexural deformation easily, and makes the jumping-up zone produce stratification; After die forging, still can make rod head have laminated joint, directly influence the tensile strength of pull bar, reduce the workmanship of pull bar; In addition, in the free compression process, be heating on one side, Yi Bian push the pull bar blank, it is thick that thermal treatment zone distortion is increased, this process is slower, if too fast, the thermal treatment zone can produce strange change, makes the jumping-up failure.So production efficiency is lower.
Summary of the invention
The purpose of this invention is to provide a kind of production technology, this production technology can improve the intensity after the moulding of elevator pull bar, improves the quality of elevator pull bar moulding, and the efficient of moulding is high.
For achieving the above object, a kind of step of production technology of elevator pull bar is:
(1) with of the end heating of elevator pull bar with stock.
(2) will put in the mould with stock through the elevator pull bar of heating, wherein, an end of heating does not withstand on the baffle mechanism, and an end of heating is placed between the upper die and lower die.
(3) start first cylinder or first oil cylinder, make the piston rod drive patrix of first cylinder or first oil cylinder move downward the realization matched moulds, behind the matched moulds, the elevator pull bar is in first storage tank and the formed accommodation space of second storage tank with an end of stock heating.
(4) start second cylinder or second oil cylinder; The piston rod of second cylinder or second oil cylinder drives the fire end of push rod motion extruding elevator pull bar with stock; Extruding along with push rod; The elevator pull bar with the fire end of stock by continuous jumping-up, and in the formed die cavity of last forming cavity and compacted under chamber the head of formation elevator pull bar.
(5) piston rod of first cylinder or first oil cylinder is moved upward, the piston rod of first cylinder or first oil cylinder drives the patrix realization die sinking that moves upward.
(6) the elevator pull bar to above-mentioned steps (5) moulding carries out die forging.
(7) hole at the head of elevator pull bar.
Above-mentioned production technology is in upsetting process, because last forming cavity and the sealing of compacted under chamber have stoped pull bar in upsetting process, to produce stratification with stock; The profile of distortion is well-balanced and consistent with forming cavity, and after die forging, metal streamline links up; There is not range upon range of connection phenomenon; Improve the tensile strength of pull bar, therefore, improved the Forming Quality of elevator pull bar; And blank can be concentrated heating before jumping-up, jumping-up, and the die forging required time is very short, and is therefore highly efficient in productivity, and the energy that consumes is also few.
As specializing, a kind of mould of producing the elevator pull bar comprises counterdie seat board, upper clamping plate, counterdie, patrix and pull bar; The counterdie seat board is fixed on the lower end of pull bar, and upper clamping plate is fixed on the upper end of pull bar; Counterdie is provided with first storage tank of a perforation, and the middle part that on counterdie, is positioned at first storage tank is provided with the compacted under chamber; Patrix is provided with second storage tank of a perforation corresponding with the first storage tank position, be provided with on the patrix corresponding with position, compacted under chamber and be positioned at second storage tank middle part on forming cavity; Counterdie is fixed on the counterdie seat board; Be fixed with first oil cylinder on the upper clamping plate, patrix is fixed on the piston rod of first oil cylinder; Side at the counterdie seat board is equipped with second oil cylinder, and the piston rod of second oil cylinder is provided with push rod; A side relative with second oil cylinder at the counterdie seat board is provided with baffle mechanism.In upsetting process, because last forming cavity and compacted under chamber can stop the elevator pull bar to occur bending and deformation with the fire end of stock, like this, seam can not appear at pull bar jumping-up position, improved the intensity of pull bar, therefore, improved the Forming Quality of elevator pull bar.
As improvement, be provided with backing plate between counterdie seat board and the counterdie.Backing plate is set is convenient to install counterdie.
As specializing, described baffle mechanism comprises fixed head, loading plate and baffle plate, and fixed head is fixed on the backing plate, and an end of loading plate is fixed on the fixed head, and the other end reaches the outside of counterdie seat board, and baffle plate is fixed on the loading plate external part.Described fixed head is used for fixing loading plate, and described loading plate is convenient to place pull bar and is used stock, is convenient to moulding elevator pull bar, described baffle plate be used to stop pull bar with stock so that form pull bar.
As improvement, be provided with sleeve between the second oil cylinder piston bar and the push rod with stepped hole; The macropore inwall of stepped hole is provided with screw thread, and the piston rod of second oil cylinder is provided with screw thread, and described sleeve is through on the piston rod that is threaded in second oil cylinder; Described push rod is the step axle, and the big end of push rod is located in the macropore of stepped hole, and the small end of push rod stretches out sleeve through the aperture of stepped hole.Sleeve is set is convenient to the installation and removal push rod, and when push rod has wearing and tearing or damages, be convenient to change push rod and do not need the push rod and second oil cylinder are changed together, practiced thrift maintenance cost.
Description of drawings
Fig. 1 is the equipment drawing of prior art moulding pull bar.
Fig. 2 produces the die structure dwg of elevator pull bar for the present invention.
Fig. 3 is the structure chart of elevator pull bar.
Fig. 4 is the enlarged drawing of A among Fig. 2.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further elaborated.
The mould of production elevator pull bar as shown in Figure 2 comprises counterdie seat board 1, upper clamping plate 2, counterdie 3, patrix 4, pull bar 5, backing plate 6, first oil cylinder 7, second oil cylinder 8, push rod 9 and baffle mechanism.
Counterdie seat board 1 is fixed on the lower end of pull bar 5 through nut, and upper clamping plate 2 is fixed on the upper end of pull bar 5 through nut.Backing plate 6 is fixed on the counterdie seat board 1.First oil cylinder 7 is fixed on upper clamping plate 2 upper surfaces, and the piston rod of first oil cylinder 7 stretches out upper clamping plate 1 downwards, and described patrix 4 is fixed on the piston rod of first oil cylinder.Counterdie 3 is fixed on the backing plate 6.Counterdie 3 is provided with first storage tank 31 of a perforation, and the middle part that on counterdie, is positioned at first storage tank is provided with compacted under chamber 32; Patrix is provided with second storage tank 41 of a perforation corresponding with the first storage tank position, be provided with on the patrix corresponding with position, compacted under chamber and be positioned at second storage tank middle part on forming cavity 42.Side at counterdie seat board 1 is fixed with installing plate 10, and second oil cylinder 8 is installed on the installing plate 10.
As shown in Figure 4, be with sleeve 11 on the piston rod of second oil cylinder 8 with stepped hole through being threaded; Described push rod 9 is the step axle, and the big end of push rod is located in the macropore of stepped hole, and the small end of push rod 9 stretches out sleeve 11 through the aperture of stepped hole.In the time will dismantling or change push rod 9, unclamp sleeve 11 and get final product, in the time will push rod being installed; Tighten sleeve and get final product, therefore, be convenient to the installation and removal push rod; And when push rod has wearing and tearing or damages, be convenient to change push rod and do not need the push rod and second oil cylinder are changed together, practiced thrift maintenance cost.
As shown in Figure 2; Described baffle mechanism comprises fixed head 13, loading plate 14 and baffle plate 15, and fixed head 13 is fixed on the backing plate 6, and an end of loading plate 14 is fixed on the fixed head 13; The other end reaches the outside of counterdie seat board, and baffle plate 15 is fixed on the loading plate external part.
As shown in Figure 3, the elevator pull bar is by shaft 16, constituted by the head 17 of jumping-up, and wherein the end at shaft 16 is processed with screw thread 18.
Utilize the production technology of above-mentioned mould molding elevator pull bar to be:
(1) with of the end heating of elevator pull bar with stock.
(2) will put into stock on the loading plate 14 through the elevator pull bar of heating, wherein, an end of heating does not withstand on the baffle plate 15, and an end of heating is placed between patrix 2 and the counterdie 1.
(3) start first oil cylinder 7, make the piston rod drive patrix 2 of first oil cylinder 7 move downward the realization matched moulds and form clamp force, behind the matched moulds, the elevator pull bar is in first storage tank 31 and second storage tank, the 41 formed accommodation spaces with an end of stock heating.
(4) start second oil cylinder 8; The piston rod of second oil cylinder 8 drives the fire end of push rod 9 motion extruding elevator pull bars with stock; Extruding along with push rod; The elevator pull bar with the fire end of stock by continuous jumping-up, and in last forming cavity 42 and compacted under chamber 32 formed die cavities the head of formation elevator pull bar.
(5) piston rod of first oil cylinder 7 is moved upward, the piston rod of first oil cylinder drives the patrix realization die sinking that moves upward.
(6) the elevator pull bar to above-mentioned steps (5) moulding carries out die forging.
(7) hole at the head of elevator pull bar.
(8) machining screw on the elevator pull bar.
Production technology of the present invention is in upsetting process, because last forming cavity and the sealing of compacted under chamber have stoped pull bar in upsetting process, to produce stratification with stock; The profile of distortion is well-balanced and consistent with forming cavity, and after die forging, metal streamline links up; There is not range upon range of connection phenomenon; Improve the tensile strength of pull bar, therefore, improved the Forming Quality of elevator pull bar; And blank can be concentrated heating before jumping-up, jumping-up, and the die forging required time is very short, and is therefore highly efficient in productivity, and the energy that consumes is also few.
Claims (3)
1. the production technology of an elevator pull bar, it is characterized in that: the processing step of production is:
(1) with of the end heating of elevator pull bar with stock;
(2) will put in the mould with stock through the elevator pull bar of heating, wherein, an end of heating does not withstand on the baffle mechanism, and an end of heating is placed between the upper die and lower die;
(3) start first oil cylinder, make the piston rod drive patrix of first oil cylinder move downward the realization matched moulds, behind the matched moulds, the elevator pull bar is in first storage tank and the formed accommodation space of second storage tank with an end of stock heating;
(4) start second oil cylinder; The piston rod of second oil cylinder drives the push rod motion and pushes the fire end of elevator pull bar with stock; Extruding along with push rod; The elevator pull bar with the fire end of stock by continuous jumping-up, and in the formed die cavity of last forming cavity and compacted under chamber the head of formation elevator pull bar;
(5) piston rod of first oil cylinder is moved upward, the piston rod of first oil cylinder drives the patrix realization die sinking that moves upward;
(6) the elevator pull bar to above-mentioned steps (5) moulding carries out die forging;
(7) hole at the head of elevator pull bar;
Described mould comprises counterdie seat board, upper clamping plate, counterdie, patrix and pull bar; The counterdie seat board is fixed on the lower end of pull bar, and upper clamping plate is fixed on the upper end of pull bar; Counterdie is provided with first storage tank of a perforation, and the middle part that on counterdie, is positioned at first storage tank is provided with the compacted under chamber; Patrix is provided with second storage tank of a perforation corresponding with the first storage tank position, be provided with on the patrix corresponding with position, compacted under chamber and be positioned at second storage tank middle part on forming cavity; Counterdie is fixed on the counterdie seat board; Be fixed with first oil cylinder on the upper clamping plate, patrix is fixed on the piston rod of first oil cylinder; Side at the counterdie seat board is equipped with second oil cylinder, and the piston rod of second oil cylinder is provided with push rod; A side relative with second oil cylinder at the counterdie seat board is provided with baffle mechanism.
2. the production technology of elevator pull bar according to claim 1 is characterized in that: be provided with backing plate between counterdie seat board and the counterdie.
3. the production technology of elevator pull bar according to claim 2; It is characterized in that: described baffle mechanism comprises fixed head, loading plate and baffle plate; Fixed head is fixed on the backing plate; One end of loading plate is fixed on the fixed head, and the other end reaches the outside of counterdie seat board, and baffle plate is fixed on the loading plate external part.
4The production technology of elevator pull bar according to claim 1 is characterized in that: be provided with the sleeve with stepped hole between the second oil cylinder piston bar and the push rod; The macropore inwall of stepped hole is provided with screw thread, and the piston rod of second oil cylinder is provided with screw thread, and described sleeve is through on the piston rod that is threaded in second oil cylinder; Described push rod is the step axle, and the big end of push rod is located in the macropore of stepped hole, and the small end of push rod stretches out sleeve through the aperture of stepped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106186858A CN102091915B (en) | 2010-12-31 | 2010-12-31 | Process for producing elevator draw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106186858A CN102091915B (en) | 2010-12-31 | 2010-12-31 | Process for producing elevator draw rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102091915A CN102091915A (en) | 2011-06-15 |
| CN102091915B true CN102091915B (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106186858A Active CN102091915B (en) | 2010-12-31 | 2010-12-31 | Process for producing elevator draw rod |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128493A (en) * | 2011-11-29 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Preparation technology of snap ring connection rod |
| CN103934400A (en) * | 2014-03-17 | 2014-07-23 | 天津机辆轨道交通装备有限责任公司 | Pull rod forging tool of expanding device |
| CN105057534B (en) * | 2015-08-06 | 2017-06-27 | 平高集团有限公司 | A kind of shaped device of extending pull rod |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1207606A1 (en) * | 1983-09-09 | 1986-01-30 | Предприятие П/Я Р-6543 | Method of producing rods having thickened end and middle parts |
| JP2005144554A (en) * | 2003-10-21 | 2005-06-09 | Showa Denko Kk | Forging method, forged article and forging apparatus |
| CN101181730A (en) * | 2007-12-07 | 2008-05-21 | 江阴隆澄钻采机械制造有限公司 | Drill pipe joint precision die forging process |
| CN101198424A (en) * | 2005-06-17 | 2008-06-11 | 昭和电工株式会社 | Method and apparatus for upsetting |
| CN201140262Y (en) * | 2007-12-17 | 2008-10-29 | 重庆市合川区渝生精加工厂 | Selective heating continuous upsetting enclosed simple mould for metal bar |
| CN101564751A (en) * | 2009-04-28 | 2009-10-28 | 巨力索具股份有限公司 | Technique for forging electric upsetting steel tie rod cap |
-
2010
- 2010-12-31 CN CN2010106186858A patent/CN102091915B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1207606A1 (en) * | 1983-09-09 | 1986-01-30 | Предприятие П/Я Р-6543 | Method of producing rods having thickened end and middle parts |
| JP2005144554A (en) * | 2003-10-21 | 2005-06-09 | Showa Denko Kk | Forging method, forged article and forging apparatus |
| CN101198424A (en) * | 2005-06-17 | 2008-06-11 | 昭和电工株式会社 | Method and apparatus for upsetting |
| CN101181730A (en) * | 2007-12-07 | 2008-05-21 | 江阴隆澄钻采机械制造有限公司 | Drill pipe joint precision die forging process |
| CN201140262Y (en) * | 2007-12-17 | 2008-10-29 | 重庆市合川区渝生精加工厂 | Selective heating continuous upsetting enclosed simple mould for metal bar |
| CN101564751A (en) * | 2009-04-28 | 2009-10-28 | 巨力索具股份有限公司 | Technique for forging electric upsetting steel tie rod cap |
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| CN102091915A (en) | 2011-06-15 |
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