CN107813018B

CN107813018B - Feeding floating device in cutting machine

Info

Publication number: CN107813018B
Application number: CN201711362434.6A
Authority: CN
Inventors: 杨孙涛; 李萍
Original assignee: ZHANGJIAGANG XINGYU MACHINERY MANUFACTURING CO LTD
Current assignee: ZHANGJIAGANG XINGYU MACHINERY MANUFACTURING CO LTD
Priority date: 2017-12-18
Filing date: 2017-12-18
Publication date: 2024-08-09
Anticipated expiration: 2037-12-18
Also published as: CN107813018A

Abstract

The invention discloses a feeding floating device in a cutting machine in the field of cutting machines, which comprises: the frame is equipped with in the frame and send and press from both sides the fixing base, send to press from both sides and be equipped with the pay-off clamp on the fixing base, the pay-off clamp includes the mould fixing base, be equipped with the clamp pipe die on the mould fixing base, be equipped with the roof on the stand, be equipped with a clamp plate between roof and clamp pipe die, the clamp plate cover is established on the stand, the clamp plate bottom is equipped with the moulding-die, the clamp plate is connected with first actuating mechanism, first actuating mechanism can drive the clamp plate and slide from top to bottom along the stand, send to press from both sides the fixing base and be connected with floating mechanism, floating mechanism includes the pivot, the pivot is connected with the second actuating mechanism that can drive the pivot rotation, be equipped with cam mechanism in the pivot, be equipped with the connecting rod on the cam mechanism, the connecting rod other end is connected with sending to press from both sides the fixing base. The invention has the advantages of avoiding the mechanical friction between the pipe fitting and the clamping surface of the feeding clamp or the cutting clamp, thereby causing scratch on the surface of the pipe fitting, and the like.

Description

Feeding floating device in cutting machine

Technical Field

The invention relates to the field of cutting machines, in particular to a mechanism for floating lifting adjustment of a feeding clamp in a cutting machine.

Background

The cutting machine is a machine capable of sawing and processing pipes and generally comprises at least two sets of clamping jaw mechanisms, namely a feeding clamp and a cutting clamp, wherein the feeding clamp comprises a first pipe clamping die fixedly arranged on a first fixed die holder and a first pressing die capable of pressing the pipe fitting in the first pipe clamping die, the cutting clamp comprises a second pipe clamping die fixedly arranged on a second fixed die holder and a second pressing die capable of pressing the pipe fitting in the second pipe clamping die, and clamping surfaces of the first pipe clamping die and the second pipe clamping die must be kept on the same horizontal line to ensure cutting quality when cutting is performed. When the pipe cutting machine works, the pipe fitting is clamped by the feeding clamp, the pipe fitting is conveyed onto the second pipe clamping die of the cutting clamp by the feeding clamp under the action of the driving device, the cutting clamp is started to clamp the pipe fitting, then cutting is carried out, the pipe fitting is loosened by the feeding clamp after cutting is completed, the pipe fitting is retracted to the initial position, and then the operation is repeated.

Because the clamping surfaces of the first pipe clamping die and the second pipe clamping die are positioned on the same horizontal line, when the feeding clamp is used for feeding, the pipe fitting can mechanically rub with the second pipe clamping die of the blanking clamp, and when the feeding clamp is retracted, the pipe fitting can mechanically rub with the first pipe clamping die of the feeding clamp, so that scratches on the surface of the pipe fitting due to the mechanical friction are easily caused, and the product quality is affected.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the feeding floating device in the cutting machine can carry out floating lifting adjustment on the center position of the feeding clamp in the feeding and retreating processes, so that the phenomenon that the pipe fitting and the feeding clamp or the blanking clamp are mechanically rubbed to cause scratches is avoided.

In order to solve the problems, the invention adopts the following technical scheme: the feeding clamp comprises a die fixing seat fixedly arranged on the feeding clamp fixing seat, a pipe clamping die is arranged on the die fixing seat, a stand column is vertically arranged on the die fixing seat, a top plate is fixedly arranged at the uppermost part of the stand column, a pressing plate is further arranged between the top plate and the pipe clamping die, the pressing plate is sleeved on the stand column, a pressing die is fixedly arranged at the bottom of the pressing plate, the pressing plate is connected with a first driving mechanism, the first driving mechanism can drive the pressing plate to slide up and down along the stand column, so that the pressing die and the pipe clamping die can be clamped or opened, the feeding clamp fixing seat is connected with a floating mechanism, and the whole feeding clamp fixing seat and the whole feeding clamp can be lifted or lowered under the action of the floating mechanism; the specific structure of the floating mechanism comprises: the rotating shaft is movably supported in the frame and is connected with the second driving mechanism, the second driving mechanism can drive the rotating shaft to rotate, a cam mechanism is arranged on the rotating shaft, a connecting rod is arranged on the cam mechanism, and the other end of the connecting rod is connected with the clamp feeding fixing seat.

Further, the feeding floating device in the foregoing cutting machine, wherein: the specific structure of the cam mechanism comprises: the eccentric shaft is fixedly sleeved on the rotating shaft through an eccentric hole, an eccentric bearing sleeve is sleeved outside the eccentric shaft, the eccentric shaft is connected with the eccentric bearing sleeve through a bearing, and the eccentric bearing sleeve is hinged with one end of the connecting rod.

Further, the feeding floating device in the foregoing cutting machine, wherein: the specific structure of the first driving mechanism comprises: the clamping oil cylinder is fixedly arranged on the top plate, and a piston rod of the clamping oil cylinder penetrates through the top plate downwards and then is connected with the pressing plate.

Further, the feeding floating device in the foregoing cutting machine, wherein: the specific structure of the second driving mechanism comprises: a floating oil cylinder is fixedly arranged on the frame, a piston rod of the floating oil cylinder is connected with the rack, and a gear meshed with the rack is fixedly sleeved on the rotating shaft.

Further, the feeding floating device in the foregoing cutting machine, wherein: a pressing block which can press the rack on the gear and keep the rack and the gear in a meshed state is fixedly arranged in the rack; the frame is also provided with a compaction adjusting mechanism which can adjust the compaction degree of the pressing block.

Further, the feeding floating device in the foregoing cutting machine, wherein: the specific structure of the compaction adjusting mechanism comprises: the fixed block is arranged above the pressing block, the fixed block is fixedly arranged on the frame, a through threaded hole is formed in the vertical direction of the fixed block, a matched compression screw is arranged in the threaded hole, and the bottom of the compression screw is propped against the pressing block after passing through the threaded hole.

The beneficial effects of the invention are as follows: the eccentric wheel is driven to rotate through the rotating shaft, so that the eccentric holes are positioned at different height positions, floating lifting adjustment is carried out on the whole feeding clamp, and mechanical friction between the pipe fitting and the clamping surface of the blanking clamp or between the pipe fitting and the clamping surface of the feeding clamp in the feeding process and the feeding clamp retreating process can be effectively prevented, so that scratches on the surface of the pipe fitting are avoided.

Drawings

Fig. 1 is a schematic structural view of a feeding floating device in a cutting machine according to the present invention.

Fig. 2 is a schematic view of the cam mechanism in fig. 1.

Detailed Description

The technical scheme of the invention is further described in detail below with reference to the attached drawings and the preferred embodiments.

As shown in fig. 1, a feeding float device in a cutting machine includes: the machine frame 1 is provided with a clamp feeding fixing seat 2, a clamp feeding clamp 3 is fixedly arranged on the clamp feeding fixing seat 2, the clamp feeding clamp 3 comprises a die fixing seat 31 fixedly arranged on the clamp feeding fixing seat 2, a pipe clamping die 32 is fixedly arranged on the die fixing seat 31, upright posts 33 are vertically arranged at four corners of the die fixing seat 31, a top plate 34 is fixedly arranged at the uppermost side of the four upright posts 33, a pressing plate 35 is further arranged between the top plate 34 and the pipe clamping die 32, the four upright posts 33 are movably sleeved with the pressing plate 35, a pressing die 36 is fixedly arranged at the bottom of the pressing plate 35, the pressing plate 35 is connected with a first driving mechanism 7, and the first driving mechanism 7 can drive the pressing plate 35 to slide up and down along the four upright posts 33, so that the pressing die 36 and the pipe clamping die 32 can be clamped or opened. In this embodiment, the specific structure of the first driving mechanism 7 includes: the clamping cylinder 71 fixedly installed on the top plate 34, wherein a piston rod of the clamping cylinder 71 passes through the top plate 34 downwards and is connected with the pressing plate 35, and the up-and-down movement of the piston rod of the clamping cylinder 71 enables the pressing die 36 and the pipe clamping die 32 to be clamped or unclamped, so that the pipe fitting on the pipe clamping die 32 is clamped or unclamped.

The clamp feeding fixing seat 2 is connected with the floating mechanism 4, and the clamp feeding fixing seat 2 and the clamp feeding clamp 3 can be lifted or lowered integrally under the action of the floating mechanism 4; the specific structure of the floating mechanism 4 comprises: the rotating shaft 41 is movably supported in the frame 1, the rotating shaft 41 is connected with the second driving mechanism 42, the second driving mechanism 42 can drive the rotating shaft 41 to rotate, the rotating shaft 41 is provided with the cam mechanism 43, the cam mechanism 43 is provided with the connecting rod 44, and the other end of the connecting rod 44 is connected with the clamp feeding fixing seat 2. As shown in fig. 1 and 2, in the present embodiment, the specific structure of the cam mechanism 43 includes: the eccentric shaft 431, the eccentric hole 432 of the eccentric shaft 431 is fixedly sleeved on the rotating shaft 41, the eccentric shaft 431 is sleeved with the eccentric bearing sleeve 433, the eccentric shaft 431 is connected with the eccentric bearing sleeve 433 through the bearing 434, and the eccentric bearing sleeve 433 is hinged with one end of the connecting rod 44. The second driving mechanism 42 drives the eccentric shaft 431 to rotate through the rotating shaft 41, so that the eccentric holes 432 are positioned at different height positions, and the feeding clamp 3 is lifted or lowered in a floating manner. In this embodiment, the specific structure of the second driving mechanism 42 includes: a floating oil cylinder 421 is fixedly arranged on the frame 1, a piston rod of the floating oil cylinder 421 is connected with a rack 422, and a gear 423 meshed with the rack 422 is sleeved on the rotating shaft 41. In this embodiment, the press block 5 capable of pressing the rack 422 against the gear 423 and keeping the rack 422 and the gear 423 in an engaged state is fixedly installed in the rack 1, and the press block 5 can effectively prevent the rack 422 from jumping up. The frame 1 is also provided with a compaction adjusting mechanism 8 which can adjust the compaction degree of the pressing block 5. In this embodiment, the specific structure of the pressing adjustment mechanism 8 includes: the fixed block 81 located briquetting 5 top, fixed block 81 fixed mounting is provided with the screw hole that link up in the frame 1 in the vertical direction of fixed block 81, is provided with matched with hold-down screw 82 in the screw hole, and hold-down screw 82's bottom supports behind the screw hole on briquetting 5, can adjust briquetting 5 to the degree of compressing tightly of rack 422 through screwing up hold-down screw 82.

The working principle of the feeding floating device in the cutting machine is as follows: before feeding, a clamping oil cylinder 71 is started, and the clamping oil cylinder 71 drives a pressing die 36 to approach to the pipe clamping die 32 until the pressing die 36 and the pipe clamping die 32 are clamped so as to clamp a pipe fitting; when feeding, a floating oil cylinder 421 is started, the floating oil cylinder 421 rubs the rotating shaft 41 through a rack 422 until an eccentric hole 432 of an eccentric shaft 431 is positioned at the lowest position, and at the moment, the whole of the feeding clamp fixing seat 2 and the feeding clamp 3 is lifted to the highest position in a floating way, so that the clamping surface of a pipe clamping die 32 in the feeding clamp 3 is higher than the clamping surface of a second pipe clamping die in a cutting clamp, and mechanical friction between a pipe fitting and the surface of the second pipe clamping die of the cutting clamp is avoided in the feeding process; after feeding to a specified position, starting the floating oil cylinder 421 again, and rubbing the rotating shaft 41 by the floating oil cylinder 421 through the rack 422 until the eccentric hole 432 of the eccentric shaft 431 is positioned at the middle position, wherein at the moment, the clamping surface of the pipe clamping die 32 in the feeding clamp 3 is kept flush with the clamping surface of the second pipe clamping die in the cutting clamp, so that the feeding clamp 3 and the cutting clamp can clamp and fix a pipe simultaneously, and the cutting quality is ensured; when the cutting of the pipe is finished and the feeding clamp 3 needs to be retracted to the initial position, the clamping oil cylinder 71 is started again, the clamping oil cylinder 71 drives the pressing die 36 to be separated from the pipe clamping die 32, so that the pipe is loosened, then the floating oil cylinder 421 is started again, the floating oil cylinder 421 rubs the rotating shaft 41 through the rack 422 until the eccentric hole 432 of the eccentric shaft 431 is located at the highest position, at the moment, the whole feeding clamp fixing seat 2 and the feeding clamp 3 are floated and lowered to the lowest position, so that the clamping surface of the pipe clamping die 32 in the feeding clamp 3 is lower than the clamping surface of the second pipe clamping die in the cutting clamp, and mechanical friction between the pipe and the surface of the pipe clamping die 32 of the feeding clamp 3 is avoided in the process of retracting the feeding clamp 3 to the initial position.

The feeding floating device in the cutting machine with the structure has the advantages that: the eccentric wheel is driven to rotate through the rotating shaft, so that the eccentric holes are positioned at different height positions, floating lifting adjustment is carried out on the whole feeding clamp, and mechanical friction between the pipe fitting and the clamping surface of the blanking clamp or between the pipe fitting and the clamping surface of the feeding clamp in the feeding process and the feeding clamp retreating process can be effectively prevented, so that scratches on the surface of the pipe fitting are avoided.

Claims

1. A feeding floating device in a cutting machine comprises: a frame, a feeding clamp fixing seat is arranged on the frame, a feeding clamp is fixedly installed on the feeding clamp fixing seat, the feeding clamp comprises a mold fixing seat fixedly installed on the feeding clamp fixing seat, a pipe clamping mold is arranged on the mold fixing seat, a column is vertically installed on the mold fixing seat, a top plate is fixedly installed on the top of the column, a pressing plate is also arranged between the top plate and the pipe clamping mold, the pressing plate is sleeved on the column, a pressing mold is fixedly installed on the bottom of the pressing plate, the pressing plate is connected to the first driving mechanism, and the first driving mechanism can drive The pressing plate slides up and down along the column, so that the pressing die and the clamping tube die can be closed or opened, and the characteristics are: the feeding clamp fixing seat is connected to the floating mechanism, under the action of the floating mechanism, the feeding clamp fixing seat and the feeding clamp can be lifted or lowered as a whole; the specific structure of the floating mechanism includes: a rotating shaft movably supported in the frame, the rotating shaft is connected to the second driving mechanism, the second driving mechanism can drive the rotating shaft to rotate, a cam mechanism is arranged on the rotating shaft, a connecting rod is arranged on the cam mechanism, and the other end of the connecting rod is connected to the feeding clamp fixing seat;

The specific structure of the cam mechanism includes: an eccentric shaft, the eccentric shaft is fixedly sleeved on the rotating shaft through an eccentric hole, an eccentric bearing sleeve is arranged on the outer sleeve of the eccentric shaft, the eccentric shaft and the eccentric bearing sleeve are connected through a bearing, and the eccentric bearing sleeve is hinged to one end of the connecting rod; the specific structure of the first driving mechanism includes: a clamping cylinder fixedly installed on the top plate, the piston rod of the clamping cylinder passes downward through the top plate and is connected to the pressure plate; the specific structure of the second driving mechanism includes: a floating cylinder fixedly installed on the frame, the piston rod of the floating cylinder is connected to the rack Then, a gear meshing with the rack is fixedly sleeved on the rotating shaft; a pressure block capable of pressing the rack against the gear to keep the rack and the gear in meshing state is fixedly installed in the frame; a clamping adjustment mechanism capable of adjusting the clamping degree of the pressure block is also provided in the frame; the specific structure of the clamping adjustment mechanism includes: a fixed block located above the pressure block, the fixed block is fixedly installed on the frame, a through threaded hole is provided in the vertical direction of the fixed block, a matching clamping screw is provided in the threaded hole, and the bottom of the clamping screw is abutted against the pressure block after passing through the threaded hole;

Before feeding, start the clamping cylinder, which drives the pressure die toward the tube clamping die until the pressure die and the tube clamping die are closed to clamp the tube fitting; during feeding, start the floating cylinder, which rubs the rotating shaft through the rack until the eccentric hole of the eccentric shaft is at the lowest position. At this time, the feeding clamp fixing seat and the feeding clamp are floated and lifted to the highest position as a whole, so that the clamping surface of the tube clamping die in the feeding clamp is higher than the clamping surface of the second tube clamping die in the cutting clamp, thereby avoiding mechanical friction between the tube fitting and the surface of the second tube clamping die of the cutting clamp during feeding; after feeding to the specified position, start the floating cylinder again, which rubs the rotating shaft through the rack until the eccentric hole of the eccentric shaft is at the middle height. At this time, the clamping surface of the tube clamping die in the feeding clamp It is kept flush with the clamping surface of the second tube clamping die in the cutting clamp, so that the feeding clamp and the cutting clamp can clamp and fix the pipe fitting at the same time to ensure the cutting quality; when the cutting of the pipe fitting is completed and the feeding clamp needs to be returned to the initial position, the clamping cylinder is started again, and the clamping cylinder drives the pressing die and the tube clamping die to separate, thereby loosening the pipe fitting, and then the floating cylinder is started again, and the floating cylinder rubs the rotating shaft through the rack until the eccentric hole of the eccentric shaft is at the highest position. At this time, the feeding clamp fixing seat and the feeding clamp are floated and lowered to the lowest position as a whole, so that the clamping surface of the tube clamping die in the feeding clamp is lower than the clamping surface of the second tube clamping die in the cutting clamp, thereby avoiding mechanical friction between the pipe fitting and the surface of the tube clamping die of the feeding clamp when the feeding clamp is returned to the initial position.