CN201659179U - Die for looping metal bar - Google Patents

Die for looping metal bar Download PDF

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Publication number
CN201659179U
CN201659179U CN2010201697138U CN201020169713U CN201659179U CN 201659179 U CN201659179 U CN 201659179U CN 2010201697138 U CN2010201697138 U CN 2010201697138U CN 201020169713 U CN201020169713 U CN 201020169713U CN 201659179 U CN201659179 U CN 201659179U
Authority
CN
China
Prior art keywords
pressure arm
gripper shoe
metal bar
bracing strut
axis hole
Prior art date
Application number
CN2010201697138U
Other languages
Chinese (zh)
Inventor
赵祯
宁建强
李晓峰
赵大海
Original Assignee
晋西工业集团有限责任公司
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 晋西工业集团有限责任公司 filed Critical 晋西工业集团有限责任公司
Priority to CN2010201697138U priority Critical patent/CN201659179U/en
Application granted granted Critical
Publication of CN201659179U publication Critical patent/CN201659179U/en

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Abstract

The utility model discloses a die for looping a metal bar. The die comprises an upper die plate, a lower die plate, a pressure plate, a pin frame, a left pressure arm, a right pressure arm, a support plate, a stop plate, a rotating shaft, a pressure shaft, a shaft bracket and a positioning block. The pressure shaft is arranged in a shaft hole of the front end of the pin shaft. The rear end of the pin shaft is arranged in a cone-shaped hole of the pressure shaft. The pressure plate is connected with the upper die plate. The support plate is fixedly connected with the lower die plate. The shaft bracket is fixedly connected with the lower die plate. The stop plate is fixedly connected with the support plate. The positioning block is fixedly connected with the left pressure arm. The left pressure arm and the right pressure arm are assembled with the shaft bracket and the support plate through the rotating shaft. When looped, the left pressure arm and the right pressure arm turn around the rotating shaft and gather up gradually, and the metal bar gradually forms a circular ring in the cavity composed of the left pressure arm and the right pressure arm. The utility model has the advantages of simple structure, low manufacture cost and convenient operation, which improves the appearance quality, realizes the standard manufacture and greatly increases the production efficiency.

Description

A kind of mould that metal bar material is enclosed loop forming
Technical field
The utility model belongs to the forming materials technical field in the mechanical plastic working, relates to a kind of mould that metal bar material is enclosed loop forming.
Background technology
At the industrial machinery manufacture field, often need some ends of processing to be circular metallic element, the parts of this shape use widely among the product of each industrial circle, for example suspension hook that adopts on the overhang-door hook that is adopted on the railway freight railway carriage, the mechanical engineering vehicle etc.
At present, domestic enterprise is when enclosing loop forming to this kind parts, generally the processing method of Cai Yonging is at first with the manual ring mode of enclosing in metal bar material heating back, it is bigger that this mode is influenced by human factor, the product precision does not often reach production engineering specifications, be shaped bad, outward appearance is relatively poor, homogeneity of product does not reach requirement, and productivity ratio is low.Abroad some large enterprises then adopt the large-sized numerical control forging equipment to process, but this equipment price is very expensive, and for non-ultra-large production, cost is too high, and domestic enterprise and parts buying side are difficult to accept.
The utility model content
The purpose of this utility model is in order to overcome the defective of prior art, to enclose the loop forming problem for solving metal bar material, make it under the prerequisite of controlling cost, realize standardization, mass manufacturing, proposing a kind of loop forming particular manufacturing craft that encloses.
The utility model is realized by the following technical solutions.
A kind of metal bar material is enclosed the particular manufacturing craft of loop forming, comprise cope match-plate pattern, lower bolster, pressing plate, bearing pin frame, left pressure arm, right pressure arm, gripper shoe, limiting plate, turning cylinder, last item, bracing strut, locating piece and nut.
Wherein, the middle part of pressing plate has a bellmouth, and preferred, the tapering of bellmouth is 5 °.
All have an axis hole on left side pressure arm, the right pressure arm, simultaneously, all have 2 axis holes on gripper shoe, the bracing strut separately.The axis hole of left side pressure arm is on the same axis with an axis hole of gripper shoe, an axis hole of bracing strut, the axis hole of right pressure arm is on the same axis with another axis hole of gripper shoe, another axis hole of bracing strut, make turning cylinder can pass these axis holes, left pressure arm, right pressure arm and bracing strut and gripper shoe are assembled together.
Described left pressure arm, right pressure arm structurally require as follows: it encloses plane, loop forming portion radius place will become 15 ° of angles with the vertical line of circle diameter.Purpose is to enclose in the ring process at metal bar material, can not cause extruding to the extension of bar, thereby prevents that bar from scrapping.
Preferably, in order to allow left pressure arm, right pressure arm return to initial position easily, on each pressure arm, be equipped with counter weight device.
Annexation between the above-mentioned building block is as follows:
Last item is installed in the axis hole of bearing pin frame lower end, and the upper end of bearing pin frame is installed in the bellmouth of pressing plate, and pressing plate is connected with cope match-plate pattern.
Be connected between gripper shoe and the lower bolster; Be connected between bracing strut and the lower bolster; Limiting plate is connected with gripper shoe, is used to guarantee that left and right pressure arm is fixed on initial position; Locating piece and left pressure arm are connected, and the length that locating piece stretches to the metal bar material direction requires to determine according to the product design dimensions; A left side pressure arm, right pressure arm are assembled together by turning cylinder and bracing strut and gripper shoe respectively.With nut turning cylinder is fixed on bracing strut and the gripper shoe.
Preferably, this mould also comprises elastic washer.Elastic washer is enclosed within the screw position, top of turning cylinder, with nut turning cylinder is fixed on the bracing strut again.
Preferably, this mould also comprises a dog screw, and dog screw is screwed on the locating piece, is used for when initial trial-production metal bar material being positioned.
Adopt above-mentioned mould that the process that metal bar material encloses loop forming is as follows:
At first, metal bar material is put on the type groove of right pressure arm, left pressure arm, and its top is pushed into locating piece place on the left pressure arm, avoiding the slit between the final annulus contact site that forms of bar excessive, and avoid squeezing and hinder bar.Preferably, if adopted dog screw, then adopt dog screw that metal bar material is positioned.
Then, start hydraulic press, piston rod drives the downward pressed metal of last item bar.That is, last item is the contacting metal bar at first, and constantly to pressing down, metal bar material forms an annulus gradually in the die cavity that left pressure arm, right pressure arm and last item constituted with metal bar material.In this process, left pressure arm, right pressure arm all rotate also around turning cylinder and close up gradually.
When metal bar material form one complete circular after, promptly stop compacting, subsequently, piston rod drives last item, and the extension of metal bar material is upwards lifted, at this moment, left pressure arm, right pressure arm oppositely open around equal turning cylinder.Lift in the process last, provide the power that returns back to top by locating piece, with the extension of metal bar material toward pushing up back.After left pressure arm, right pressure arm all return to initial position, product can be taken out.
Beneficial effect
The utility model is simple in structure, manufacturing cost is lower, in enclosing the loop forming process, adopt left and right pressure arm symmetry to rotate the die mould mode, contrast existing manual production mode, technological operation is easy, further improved the presentation quality of product, realized the standardization manufacturing of product, production efficiency has improved at least 5 times.
Description of drawings
Fig. 1 is that the structure of mould described in the utility model preferred implementation is formed schematic diagram;
Fig. 2 is the side cutaway view of pressing plate 2 described in the utility model preferred implementation;
Fig. 3 is the side cutaway view of mould described in the utility model preferred implementation;
Fig. 4 is the structural representation of left pressure arm 17 described in the utility model preferred implementation;
Wherein, 1-cope match-plate pattern, 2-pressing plate, 3-bearing pin frame, 4-first screw, the right pressure arm of 5-, 6-gripper shoe, 7-limiting plate, 8-second screw, 9-lower bolster, 10-turning cylinder, 11-bracing strut, 12-the 3rd screw, 13-the 4th screw, 14-dog screw, 15-locating piece, 16-the 6th screw, 17-left side pressure arm, 18-nut, 19-last item, 20-elastic washer.
The specific embodiment
Below in conjunction with accompanying drawing preferred implementation of the present utility model is described in further details.
A kind of particular manufacturing craft that metal bar material is enclosed loop forming, its structure is formed as shown in Figure 1, be divided into the upper and lower, top comprises cope match-plate pattern 1, pressing plate 2, bearing pin frame 3, first screw 4 and last item 19, and the bottom comprises right pressure arm 5, left pressure arm 17, gripper shoe 6, limiting plate 7, turning cylinder 10, bracing strut 11, lower bolster 9, locating piece 15, second screw 8, the 3rd screw 12, the 4th screw 13, dog screw 14, the 6th screw 16, nut 18 and elastic washer 20.
Wherein, pressing plate 2 is the annulus plate-like, and its middle part has bellmouth, and the bellmouth next door has aperture, is used for first screw 4 and passes.Preferably, the tapering of bellmouth is 5 °.As shown in Figure 2.
All have an axis hole on right pressure arm 5, the left pressure arm 17, simultaneously, have 2 axis holes and 4 screwed holes on gripper shoe 6, the bracing strut 11 separately.The axis hole of right pressure arm 5 is on the same axis with an axis hole of gripper shoe 6, an axis hole of bracing strut 11, the axis hole of left side pressure arm 17 is on the same axis with another axis hole of gripper shoe 6, another axis hole of bracing strut 11, purpose is to make turning cylinder 10 can pass these axis holes, and left pressure arm 17, right pressure arm 5 are assembled together with bracing strut 11 and gripper shoe 6.
In addition, described left pressure arm 17, right pressure arm 5 structurally require to possess following condition: enclosing plane, loop forming portion radius place will form 15 ° of angles with the vertical line of circle diameter, purpose is to enclose in the ring process at metal bar material, and the extension to bar does not cause extruding, prevents that bar from scrapping.The structure of left side pressure arm 17 is equipped with center bridge as shown in Figure 4 on it.The difference of right pressure arm 5 structures and left pressure arm 17 only is not have center bridge.
Metal bar material encloses the internal diameter that enclose loop forming portion of the circle diameter size of ring formation by left pressure arm 17, right pressure arm 5, and the decision of the diameter of last item 19.
Annexation between the above-mentioned building block is as follows:
Last item 19 is installed in the axis hole of bearing pin frame 3 front ends, and last item 19 is used to press down metal bar material, as shown in Figure 3.The rear end of bearing pin frame 3 is installed in the bellmouth of pressing plate 2, and pressing plate 2 is connected with cope match-plate pattern 1 by first screw 4.
Be connected by the 3rd screw 13 between gripper shoe 6 and the lower bolster 9; Be connected by the 4th screw 12 between bracing strut 11 and the lower bolster 9; Limiting plate 7 is connected with gripper shoe 6 by second screw 8; Locating piece 15 is connected with left pressure arm 17 by the 6th screw 16, and dog screw 18 is screwed on the locating piece 15; Left side pressure arm 17, right pressure arm 5 are assembled together by turning cylinder 10 and bracing strut 11 and gripper shoe 6 respectively.
Elastic washer 20 is enclosed within the screw position, top of turning cylinder 10, with nut 18 turning cylinder 10 is fixed on bracing strut 11 and the gripper shoe 6 again.
Be example with the annulus end that adopts above-mentioned mould to make railway freight railway carriage overhang-door hook below, the process of metal bar material being enclosed loop forming describes.May further comprise the steps:
At first, the cope match-plate pattern 1 of this mould is fixedly connected with the piston rod of oil outer press, simultaneously, that lower bolster 9 is fixedly connected with the T type hole of operate outside platform.
Then, metal bar material is placed on the type groove of right pressure arm 5 and left pressure arm 17, and the bar top is pushed into dog screw 14 places of left pressure arm 17.
Then, start hydraulic press, its piston rod drives last item 19 to pressing down.Last item 19 is the contacting metal bar at first, and along with the hydraulic press promotion, last item 19 constantly advances the pressed metal bars downwards, and left pressure arm 17, right pressure arm 5 center on turning cylinder 10 rotations separately and close up gradually.In this process, metal bar material is configured as an annulus in left pressure arm 17, right pressure arm 5 and last item 19 formed die cavities.
After metal bar material forms a complete annulus, stop compacting, piston rod drives last item 19 metal bar material is upwards lifted, and at this moment, left pressure arm 17, right pressure arm 5 oppositely open around equal turning cylinder 10.Lift in the process last, locating piece 15 provides the power that returns back to top, with the extension of metal bar material to returning back to top.After left pressure arm 17, right pressure arm 5 all return to initial position, the product after being shaped can be taken out.
Preferably, in order to allow left pressure arm 17, right pressure arm 5 return to initial position easily, can be by counter weight device of welding on each pressure arm; Also can adopt spring with pressure arm with bracing frame 6 ways of connecting, realize the returning quickly of pressure arm.

Claims (4)

1. mould that metal bar material is enclosed loop forming, comprise that cope match-plate pattern, lower bolster, middle part have the pressing plate and the gripper shoe of bellmouth, it is characterized in that, also comprise bearing pin frame, left pressure arm, right pressure arm, limiting plate, turning cylinder, last item, bracing strut, locating piece and nut;
All have an axis hole on described left pressure arm, the right pressure arm; All have 2 axis holes on gripper shoe, the bracing strut separately;
The axis hole of described left pressure arm is on the same axis with an axis hole of gripper shoe, an axis hole of bracing strut, the axis hole of described right pressure arm is on the same axis with another axis hole of gripper shoe, another axis hole of bracing strut, make turning cylinder can pass these axis holes, left pressure arm, right pressure arm and bracing strut and gripper shoe are assembled together;
Described left pressure arm, right pressure arm structurally require as follows: it encloses plane, loop forming portion radius place will become 15 ° of angles with the vertical line of circle diameter;
Annexation between the above-mentioned building block is as follows:
Last item is installed in the axis hole of bearing pin frame lower end, and the upper end of bearing pin frame is installed in the bellmouth of pressing plate, and pressing plate is connected with cope match-plate pattern;
Be connected between gripper shoe and the lower bolster; Be connected between bracing strut and the lower bolster; Limiting plate is connected with gripper shoe, is used to guarantee that left and right pressure arm is fixed on initial position; Locating piece and left pressure arm are connected, and the length that locating piece stretches to the metal bar material direction requires to determine according to the product design dimensions; A left side pressure arm, right pressure arm are assembled together by turning cylinder and bracing strut and gripper shoe respectively; With nut turning cylinder is fixed on bracing strut and the gripper shoe.
2. as claimed in claim 1ly a kind of metal bar material is enclosed the mould of loop forming, it is characterized in that this mould comprises an elastic washer, elastic washer is enclosed within the screw position, top of turning cylinder, with nut turning cylinder is fixed on the bracing strut again.
3. as claimed in claim 1ly a kind of metal bar material is enclosed the mould of loop forming, it is characterized in that this mould comprises a dog screw, dog screw is screwed on the locating piece, is used for when initial trial-production metal bar material being positioned.
4. as claimed in claim 1ly a kind of metal bar material is enclosed the mould of loop forming, it is characterized in that, on left pressure arm, right pressure arm, all be equipped with counter weight device.
CN2010201697138U 2010-04-26 2010-04-26 Die for looping metal bar CN201659179U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201697138U CN201659179U (en) 2010-04-26 2010-04-26 Die for looping metal bar

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Application Number Priority Date Filing Date Title
CN2010201697138U CN201659179U (en) 2010-04-26 2010-04-26 Die for looping metal bar

Publications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101875073A (en) * 2010-04-26 2010-11-03 晋西工业集团有限责任公司 Die for performing loop forming on metal bar material and using method thereof
CN104139099A (en) * 2013-08-08 2014-11-12 河南卫华重型机械股份有限公司 Plate bending forming mold
CN106077287A (en) * 2016-06-22 2016-11-09 苏州天朋精密元器件有限公司 A kind of diel
CN106734424A (en) * 2016-11-17 2017-05-31 讯龙型材折弯(合肥)有限公司 A kind of both sides rotary extrusion type S-shaped bar bending mechanism
CN107790521A (en) * 2017-10-05 2018-03-13 余永海 A kind of efficient pressing equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101875073A (en) * 2010-04-26 2010-11-03 晋西工业集团有限责任公司 Die for performing loop forming on metal bar material and using method thereof
CN101875073B (en) * 2010-04-26 2012-09-26 晋西工业集团有限责任公司 Die for performing loop forming on metal bar material and using method thereof
CN104139099A (en) * 2013-08-08 2014-11-12 河南卫华重型机械股份有限公司 Plate bending forming mold
CN106077287A (en) * 2016-06-22 2016-11-09 苏州天朋精密元器件有限公司 A kind of diel
CN106734424A (en) * 2016-11-17 2017-05-31 讯龙型材折弯(合肥)有限公司 A kind of both sides rotary extrusion type S-shaped bar bending mechanism
CN107790521A (en) * 2017-10-05 2018-03-13 余永海 A kind of efficient pressing equipment

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20101201

Effective date of abandoning: 20120926