CN210498194U

CN210498194U - High-temperature forging clamping tool

Info

Publication number: CN210498194U
Application number: CN201921007961.XU
Authority: CN
Inventors: 苏忠有
Original assignee: Zhejiang Longcheng Forging Co Ltd
Current assignee: Zhejiang Longcheng Forging Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-05-12
Anticipated expiration: 2029-07-01

Abstract

The utility model discloses an instrument is got to high temperature forging clamp, including clip hook and hydraulic push rod, characterized by the clip hook includes first coupler body, second coupler body and is used for connecting the crossbeam of the equipment of taking off and land, first coupler body passes through hinge structure with the second coupler body and rotates to be connected, first coupler body and second coupler body upper end respectively with the crossbeam passes through slide mechanism sliding connection. The utility model discloses utilize the changeable grip block of angle, increase to press from both sides and get the area of contact between instrument and the forging, avoid forging stress concentration and deformation, when rotatory through the grip block, thicker plate extrudees the forging, avoids the forging because the frictional force is not enough and unexpected landing.

Description

High-temperature forging clamping tool

Technical Field

The utility model relates to a press from both sides and get the instrument, especially relate to a high temperature forging presss from both sides and gets instrument.

Background

Generally, a roll of wire is straightened and fed into a forging forming machine, a feeding device guides the wire to extend out a predetermined length, a cutter device cuts the protruded wire into two blanks, a plurality of clamping devices sequentially and gradually transfer the blanks to a plurality of stamping devices, a series of forging and punching forming are carried out on the blanks, and the punched and forged semi-finished products are fed into other subsequent operations such as thread rolling and tapping to complete the manufacturing. In the process of producing large forgings by a forging machine, the temperature of the forgings is extremely high, so that clamping tools are often required to assist; for example, a device for clamping a forged piece of an electric spindle disclosed in chinese patent document, publication No. CN202754709U, includes two clamping arms, two connecting chains and a control chain, the two clamping arms are connected at their middle positions by a hinge, one end of each of the two clamping arms is connected to one connecting chain, the other end of each of the two clamping arms is provided with a clamping claw, and the control chain is connected to the hinge. According to the scheme, the tail end of the mechanism of the forging clamping tool is often in direct contact with the forging, friction is generated by means of pressure, the clamping tool can clamp the forging to complete the steps of lifting, moving and the like, in the using process, the abrasion of the clamping end is clamped by the clamping tool, the situation that the friction force of the forging is insufficient and the forging falls off accidentally in the clamping process can occur, the clamping end angle is fixed in the clamping process, the contact surface is too small when the forging is in contact, large pressure is applied when the forging is in contact, stress concentration of the forging clamping part is caused, and the deformation is caused.

Disclosure of Invention

The utility model relates to an overcome current forging clamp and get the instrument and easily cause the forging landing and the forging clamp to get the problem of position deformation, provide a high temperature forging clamp and get instrument, avoid the forging because the not enough landing of frictional force to and the forging clamp gets the position deformation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-temperature forging clamping tool comprises a clamping hook and a hydraulic push rod, and is characterized in that the clamping hook comprises a first hook body, a second hook body and a cross beam used for connecting lifting equipment, the first hook body and the second hook body are rotationally connected through a hinge structure, the upper ends of the first hook body and the second hook body are respectively connected with the cross beam in a sliding way through a sliding mechanism, the sliding mechanism comprises a sliding chute arranged on the lower end surface of the cross beam and two sliding rods, the middle parts of the two sliding rods are positioned in the sliding chute, the tail ends of the two sliding rods are respectively connected with the first hook body and the second hook body, the hydraulic push rod oil cylinder end is fixedly connected on the cross beam, the free end of the hydraulic push rod is fixedly connected at the hinge structure, the lower ends of the first hook body and the second hook body are respectively provided with a clamping plate, the clamping plate is in one-to-one corresponding rotary connection with the first hook body and the second hook body through rotating shafts respectively, and the end face of one end, in contact with the forge piece, of the clamping plate is an outer convex curved surface. First coupler body is articulated with second coupler body middle part, and both can wind the pin joint free rotation, through both respectively with the crossbeam between the slide rail structure for rotation between them receives the restraint, thereby can only open and shut certain angle, and opening and shutting the in-process, the pin joint is along with pressing from both sides the increase of getting the angle and be close to the crossbeam gradually, along with pressing from both sides the reduction of getting the angle and keep away from the crossbeam gradually, press from both sides the end complete closure until first coupler body and second coupler body clamp. One end of the hydraulic push rod is fixed on the cross beam, the other end of the hydraulic push rod pushes and pulls the hinge structure to enable the hydraulic push rod to be far away from or close to the cross beam, and the first hook body and the second hook body are restrained in the pushing and pulling process to complete opening and closing. When pressing from both sides and getting the forging, the grip block can rotate around its pivot according to the approximate shape that the forging corresponds the position for the corresponding position of grip block laminating forging avoids the forging to press from both sides the stress that gets the position and excessively concentrates, causes here to take place deformation.

Preferably, a torsion spring is arranged at the rotating shaft. All be equipped with the torsional spring between the grip block that first coupler body, second coupler body and connected separately, torsional spring one end is fixed and is got the end at the clamp of first coupler body, second coupler body, and the other end is fixed on the grip block, and when the grip block revoluted the rotation of axes, the torsional spring can produce the moment of torsion to the grip block for the grip block can keep fixed gesture when contactless forging, avoids its initial gesture to influence the clamp of follow-up forging and gets.

Preferably, the thickness of the clamping plate gradually increases and gradually decreases from the upper end to the lower end, and the curvature of the end face of the clamping plate, which is in contact with the forged piece, gradually decreases from the uppermost end to the lowermost end of the clamping plate. The position with the largest thickness of the whole clamping plate is positioned in the middle part close to the upper end, the rising curvature of the clamping plate is relatively larger from the upper end to the position with the largest thickness, the curvature of the clamping plate is gradually reduced from the position with the largest thickness to the lower end, and the descending curve gradually tends to be smooth. After the forging is got to two grip blocks clamp, at the promotion in-process, the forging produces the trend of gliding under the action of gravity, when the displacement of gravity direction takes place for the forging, along with the friction between forging and the grip block, the grip block can revolute the rotation of axes, and the thicker part in grip block upper end is close to the forging gradually to cause the extrusion to the forging, under extruded pressure effect, the frictional force between forging and the grip block increases, has improved the forging and has got the steadiness of getting the promotion in-process.

Preferably, the end face of the end, in contact with the forge piece, of the clamping plate is provided with anti-skid grains. The anti-slip lines increase the friction between the clamping plate and the forging.

Preferably, a ceramic plate is laid on the end face of the clamping plate, which is in contact with the forge piece, and the shape of the ceramic plate is matched with that of the end face of the clamping plate, which is in contact with the forge piece. Ceramic material's heat-proof quality is better, can avoid pressing from both sides a large amount of heat conduction of in-process to pressing from both sides and get instrument upper portion, damage its structure.

Preferably, the first hook body, the second hook body and the corresponding sliding rod are respectively provided with two connection points, and the two connection points are respectively located on two sides of the corresponding sliding groove. The effect of two tie points is balanced forging gravity, prevents to press from both sides the unbalanced tool deflection that causes of gravity behind the clamp forging.

Preferably, the cross-section of the beam is I-shaped. The I-shaped structure increases the structural rigidity of the beam.

Therefore, the utility model discloses following beneficial effect has: (1) the contact area between the clamping tool and the forge piece is increased by utilizing the clamping plate with the variable angle, so that the forge piece is prevented from being deformed due to stress concentration; (2) when the clamping plate rotates, the thick plate extrudes the forge piece, and the forge piece is prevented from accidentally sliding down due to insufficient friction force.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the clamping plate of the present invention.

In the figure: 1. the device comprises a cross beam 2, a sliding chute 3, a sliding rod 4, a first hook body 5, a hinge structure 6, a ceramic plate 7, a clamping plate 8, a second hook body 9, a hydraulic push rod 10, a rotating shaft 11 and a torsion spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Examples

In the embodiment shown in fig. 1 and 2, an i-shaped cross beam 1 of the high-temperature forging clamping tool is connected with external lifting equipment, two straight sliding grooves 2 are formed in the lower end face of the cross beam 1, the sliding grooves 2 are longitudinally arranged along the lower end face, cylindrical sliding rods 3 with the same diameter as the groove width of the sliding grooves 2 are respectively arranged in the two sliding grooves 2, two ends of each sliding rod 3 extend out of the sliding grooves 2, the two sliding rods 3 are respectively connected with a first hook body 4 and a second hook body 8 through welding, each sliding rod 3 is provided with two welding points, and the two welding points are respectively located at two ends of each sliding rod 3, so that the stress balance is guaranteed. The first hook body 4 and the second hook body 8 are connected together through the hinge structure 5 in the middle of the first hook body and the second hook body, the lower ends of the first hook body and the second hook body form a clamping end, two clamping plates 7 are arranged on the clamping end, the clamping plates 7 are respectively connected to the lower ends of the first hook body 4 or the second hook body 8 corresponding to the clamping plates through rotating shafts 10, torsion springs 11 are further arranged on the rotating shafts 10, certain torque force can be generated on the clamping plates 7, ceramic plate pieces 6 are laid on the end faces of the clamping plates 7 and the end faces of the contact ends of the forged pieces, the position where the overall thickness of the clamping plates 7 is maximum is located in the middle and close to the upper end, the rising curvature is relatively large from the upper end to the maximum thickness, the curvature is gradually reduced. A hydraulic push rod 9 is arranged between the hinge structure 5 and the cross beam 1, the oil cylinder end of the hydraulic push rod 9 is fixed on the cross beam 1, and the free end of the hydraulic push rod 9 is fixed on the hinge structure 5.

When the clamping tool works, the hydraulic push rod 9 retracts to drive the hinge structure 5 to be close to the beam 1, the first hook body 4 and the second hook body 8 drive the slide rods 3 connected with the hinge structure 5 to slide in the sliding grooves 2 along with the rotation of the hinge structure 5, the two slide rods 3 are gradually separated from each other, the clamping ends of the first hook body 4 and the second hook body 8 are gradually opened, after the forge piece is placed into the hydraulic push rod 9, the hinge structure 5 is gradually separated from the beam 1, the clamping ends are gradually closed along with the hinge structure, when the clamping plate 7 is in contact with the forge piece, the clamping plate 7 rotates by a certain angle according to the shape of the forge piece to be matched with the shape of the forge piece, and finally, the clamping part of the forge piece is attached to. At the promotion in-process, the forging can move to the gravity direction because self weight, when the forging removes, along with the frictional force between forging and the grip block 7, grip block 7 can rotate certain angle towards forging moving direction, the great upper end of grip block 7 thickness is close to the forging gradually to finally contact with the forging and extrude the forging, great pressure can cause than before great frictional force in the extrusion process, make the removal of forging stop, it is more firm to press from both sides the instrument of getting the forging centre gripping.

Claims

1. A high-temperature forging clamping tool comprises a clamping hook and a hydraulic push rod, and is characterized in that the clamping hook comprises a first hook body, a second hook body and a cross beam used for connecting lifting equipment, the first hook body and the second hook body are rotationally connected through a hinge structure, the upper ends of the first hook body and the second hook body are respectively connected with the cross beam in a sliding way through a sliding mechanism, the sliding mechanism comprises a sliding chute arranged on the lower end surface of the cross beam and two sliding rods, the middle parts of the two sliding rods are positioned in the sliding chute, the tail ends of the two sliding rods are respectively connected with the first hook body and the second hook body, the hydraulic push rod oil cylinder end is fixedly connected on the cross beam, the free end of the hydraulic push rod is fixedly connected at the hinge structure, the lower ends of the first hook body and the second hook body are respectively provided with a clamping plate, the clamping plate is in one-to-one corresponding rotary connection with the first hook body and the second hook body through rotating shafts respectively, and the end face of one end, in contact with the forge piece, of the clamping plate is an outer convex curved surface.

2. The hot forging picking tool of claim 1, wherein a torsion spring is disposed at the shaft.

3. The hot forging picking tool of claim 1, wherein the thickness of the clamping plate gradually increases and gradually decreases from the upper end to the lower end, and the curvature of the end surface of the clamping plate at the end contacting the forging gradually decreases from the uppermost end to the lowermost end of the clamping plate.

4. The high-temperature forging clamping tool as claimed in claim 3, wherein the end face of the clamping plate at the end contacting the forging is provided with anti-slip lines.

5. The high-temperature forging clamping tool as claimed in claim 1, wherein a ceramic plate is laid on the end face of the clamping plate at the end contacting the forging, and the shape of the ceramic plate is matched with that of the end face of the clamping plate at the end contacting the forging.

6. The clamping tool for the high-temperature forging piece as claimed in claim 1, wherein the first hook body, the second hook body and the corresponding sliding rod are respectively provided with two connecting points, and the two connecting points are respectively located on two sides of the corresponding sliding groove.

7. The high temperature forging clamping tool as claimed in any one of claims 1 to 6, wherein the cross beam is I-shaped in cross section.