CN201267841Y - Closed pull rod device of pipe bender - Google Patents

Abstract

The utility model discloses a jam tension rod of a tube bender, which comprises a plurality of jam tension rods; one end of the jam tension rods is connected with a rotational axis of a swiveling jib of a machine and the other end is connected with the rotational axis provided with a clamp and a working lug boss provided with a lock block. The jam tension rod can increase the running stability of equipment, reduce the occurrence probability of defects and improve the bending forming quality of pipe fittings.

Description

Bending machine and strain at lever apparatus

Technical field

The utility model relates to a kind of bend pipe processing unit (plant), especially a kind of pull rod device.

Background technology

The bend pipe part except that the transfer pipeline that is widely used in gas, liquid, also is widely used as hardware because the satisfied easily requirement to aspects such as product lightweight, high strength and low consumption has obtained extensive use in high-tech sectors such as aerospace.Along with the development of high-tech sectors such as aerospace, to the demand of bend pipe more and more thin-walled property, heavy caliberization, this maximizes with regard to the corresponding CNC tube bending machine that makes.Yet the pivoted arm weight of large-scale bending machine is very big, and machine tool chief axis is produced a very big moment of flexure, has caused the rotation instability of pivoted arm when bending pipe fitting.(wall thickness is less than 1 millimeter and for the small-bend radius of large-diameter and thin-wall pipes such as stainless steel, aluminium alloy, the wall thickness factor is greater than 40, relative bending radius is less than 2.0) be shaped, because the tube wall thickness factor is big, structural stability is poor, bending needs equipment that good stability is arranged, and the deviation that pivoted arm is small when rotated all may influence the forming quality of pipe fitting, causes generation of defects.And pivoted arm is worked under unsure state for a long time and can be reduced the service life of machine tool chief axis.

Summary of the invention

For the pivoted arm that overcomes prior art rotates unsettled technical problem, the utility model proposes a kind of and strain at lever apparatus, effectively reduced the moment of flexure of pivoted arm to machine tool chief axis, avoided the instability of duty, guaranteed the stable bending forming of pipe fitting.

The technical scheme that its technical problem that solves the utility model adopts is: use some and strain at lever apparatus with clamp and bending die, and briquetting and bending die are separately fixed at together.And strain at the solid rod member that bar is a kind of simple shape, and consider shape symmetry and easy for installation, generally adopt rectangular shaft.And there is the collar at the two ends that strain at bar, one end connects the turning cylinder of machine pivoted arm during work, be enclosed within (the machine pivoted arm is around the axis rotation of this bolt) on the king-bolt that bending die is installed, the other end links to each other with pivoted arm that clamp is housed and work boss that briquetting is housed respectively, all has upright arm on pivoted arm and the work boss perpendicular to horizontal plane, and strain at bar and connect upright arm, guaranteeing and to strain at bar maintenance level, and any parts of discord bending machine interfere during bending pipe fitting.

The beneficial effects of the utility model are: under the prerequisite that technological parameter rationally is set, use the utility model can improve operation stability of equipment, reduce the probability that defective occurs, improved pipe fitting bending forming quality.Should and strain at bar and make simple and conveniently, cost is low, can both satisfy its instructions for use by the design different size for the large-scale bending machine of different size, and applicability is wide.

Below in conjunction with drawings and Examples the utility model is further specified.

Description of drawings

Fig. 1 is described in the utility model and strains at the profile schematic diagram of bar.

Fig. 2 is the assembling schematic diagram of the utility model under in working order.

Fig. 3 is a connection schematic side view of the present utility model.

Among the figure, 1-bending die, 2-king-bolt, 3-clamp, 4-pivoted arm, 5-work boss, the 6-upright arm that hangs down, the bolt of 7-band handle, 8-and strain at bar, 9-briquetting, 10-insert.

The specific embodiment

As shown in fig. 1, in the present embodiment and to strain at bar be the rectangle rod member, its cross sectional dimensions 60mm * 20mm.

As shown in Figure 2, bending die 1 is loaded on the king-bolt 2, and the axis of king-bolt 2 is the crooked main shaft of bending machine; Clamp 3 is housed on the pivoted arm 4; Work boss 5 to stretch out direction consistent with the initial position direction of pivoted arm 4, briquetting 9 is housed above; On pivoted arm 4 and the work boss 5 vertical upright arm 6 structures are arranged all.During work, and strain at bar 8 one ends and be enclosed within on the king-bolt 2, the other end and pivoted arm 4 are connected with vertical upright arm 6 on the work boss 5, guarantee and strain at bar maintenance level simultaneously, and any parts of the bending machine of getting along well during bending pipe fitting interfere.

As shown in Figure 3, in working order down, and strain at bar 8 one ends and directly be enclosed within on the king-bolt 2, contact with screw thread on the king-bolt 2 by lower surface and carry out location on the vertical direction.And to strain at bar 8 other ends and vertical upright arm 6 connected modes be to insert in 10 the groove inserted on the upright arm, is fixed in the bolt 7 of being with handle then and inserts on 10.Inserting 10 directly is connected by bolt with vertical upright arm 6, can regulate horizontal level within the specific limits, thereby regulate and strain at the tension degree of bar 8.

Above-mentioned is a kind of embodiment of the present utility model, does not constitute restriction of the present utility model.The utility model can also have other structural change, as and strain at bar and adopt round bar; And strain between bar and the upright arm connected mode that adopts other etc., but so long as use and strain at lever apparatus with clamp/bending die, briquetting/bending die is fixed together and forms an integral body, all should belong to scope of the present utility model.

Claims (3)

1, bending machine and strain at lever apparatus, comprise several and strain at bar, it is characterized in that: and an end that strains at bar connects the turning cylinder of machine pivoted arm, the other end and the pivoted arm that clamp is housed and the work boss that briquetting is housed link to each other.

2, bending machine according to claim 1 and strain at lever apparatus, it is characterized in that: there is the collar at two ends described and that strain at bar, one end is enclosed within on the king-bolt that bending die is installed during work, the other end links to each other with pivoted arm that clamp is housed and work boss that briquetting is housed respectively, all has upright arm on pivoted arm and the work boss perpendicular to horizontal plane, and strain at bar and connect upright arm, guaranteeing and to strain at bar maintenance level, and any parts of discord bending machine interfere during bending pipe fitting.

3, bending machine according to claim 1 and strain at lever apparatus, it is characterized in that: described and strain at bar and adopt rectangular shaft.

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