阅读说明：本技术 一种不锈钢钢管用扩径机构及其工作方法 (Diameter expanding mechanism for stainless steel pipe and working method thereof ) 是由 贾松 李广宇 贾健 陈丽敏 谢苗 于 2021-11-12 设计创作，主要内容包括：本发明涉及一种不锈钢钢管用扩径机构及其工作方法,此种不锈钢钢管用扩径机构,包括沿着物料行进方向依次设置的送料机构,承料机构和收料机构；位于承料机构的上方具有一适于压紧位于承料机构上的不锈钢钢管的压紧机构,位于承料机构的一侧设置有适于顶紧位于承料机构上的不锈钢钢管的辅顶机构；以及位于压紧机构的另一侧设置有扩径机构。通过送料机构,实现不锈钢钢管的输送,通过承料机构实现对于不锈钢钢管的承载为后续扩径提供一个良好的条件,通过收料机构的设置,实现将扩径之后的物料的收纳；通过扩径机构配合辅顶机构,分别对于不锈钢钢管实现扩径、磨削、以及钝化膏的涂覆,过程简单,功能多样。(The invention relates to a diameter expanding mechanism for a stainless steel pipe and a working method thereof, and the diameter expanding mechanism for the stainless steel pipe comprises a feeding mechanism, a material bearing mechanism and a material receiving mechanism which are sequentially arranged along the advancing direction of a material; a pressing mechanism which is suitable for pressing the stainless steel pipe on the material bearing mechanism is arranged above the material bearing mechanism, and an auxiliary jacking mechanism which is suitable for jacking the stainless steel pipe on the material bearing mechanism is arranged on one side of the material bearing mechanism; and the other side of the pressing mechanism is provided with an expanding mechanism. The conveying of the stainless steel pipes is realized through the feeding mechanism, the bearing of the stainless steel pipes is realized through the material bearing mechanism, a good condition is provided for subsequent expanding, and the storage of expanded materials is realized through the arrangement of the material receiving mechanism; the diameter expanding mechanism is matched with the auxiliary jacking mechanism, diameter expanding, grinding and passivation paste coating are respectively realized on the stainless steel pipe, the process is simple, and the functions are various.)

1. An expanding mechanism for a stainless steel pipe comprises a feeding mechanism, a material bearing mechanism and a material receiving mechanism which are sequentially arranged along the advancing direction of materials; it is characterized in that the preparation method is characterized in that,

a pressing mechanism which is suitable for pressing the stainless steel pipe on the material bearing mechanism is arranged above the material bearing mechanism, and an auxiliary jacking mechanism which is suitable for jacking the stainless steel pipe on the material bearing mechanism is arranged on one side of the material bearing mechanism; and

the other side of the pressing mechanism is provided with an expanding mechanism; wherein

When the diameter expanding mechanism moves to a first station in the stainless steel pipe, the inner wall of the stainless steel pipe is ground by the diameter expanding mechanism;

when the diameter expanding mechanism moves to a second station in the stainless steel pipe, the head of the stainless steel pipe is expanded by the diameter expanding mechanism;

and when the diameter expanding mechanism resets, the inner wall of the stainless steel pipe is coated with passivation paste by the diameter expanding mechanism.

2. The expanding mechanism for stainless steel pipes according to claim 1,

the diameter expanding mechanism comprises a side bracket, a diameter expanding cylinder fixed on the side bracket, and a diameter expanding device positioned at the end part of a piston rod of the diameter expanding cylinder; and

the inner sleeve of the expanding device is fixed on a fixed plate, and guide parts are arranged on two sides of the fixed plate in a mirror image manner;

the diameter expanding cylinder is suitable for pushing the diameter expanding device to a first station and a second station and pulling back the diameter expanding device, so that the diameter expanding device can grind, expand and coat passivation paste in sequence.

3. The expanding mechanism for stainless steel pipes according to claim 2,

the diameter expanding device comprises a diameter expanding outer sleeve, a guide spring embedded in the diameter expanding outer sleeve, and a grinding shaft sleeved in the guide spring; and

the end part of the diameter-expanding outer sleeve is a step matched with the diameter-expanding requirement, and the inside of the diameter-expanding outer sleeve is hollow and is provided with a through hole in a vertically through manner;

the grinding shaft is in a rod shape, a bearing table is arranged at the waist of the grinding shaft, a shaft head is arranged at the end part of the grinding shaft, the diameter of the shaft head is smaller than that of the grinding shaft, a horn flexible sleeve is arranged at the end part of the shaft head, a plurality of pores are formed in the outer wall of the shaft head, a flow passage is formed in the grinding shaft in a hollow mode, and a filing face is arranged on the side wall of the grinding shaft;

the guide spring is positioned in the diameter-expanding outer sleeve, the upper end of the guide spring props against the diameter-expanding outer sleeve, and the lower end of the guide spring props against the bearing table.

4. The expanding mechanism for stainless steel pipes according to claim 3,

the feeding mechanism comprises a feeding plate which is obliquely arranged, and a plurality of feeding notches are formed in the feeding plate;

the material bearing mechanism comprises a material bearing platform, a jacking cylinder arranged on one side of the material bearing platform and a guide part fixed on a piston rod of the jacking cylinder, wherein a bearing socket opening is formed in the end surface of the material bearing platform, and a plurality of material conveying notches are formed in the bearing socket opening; and

the guide part comprises a positioning plate, and a plurality of front lifting plates and a plurality of rear lifting plates which are fixed on the positioning plate; the end surface of the front lifting plate is provided with a front inclined slope surface, and the end surface of the rear lifting plate is provided with a rear inclined arc surface.

5. The expanding mechanism for stainless steel pipes according to claim 4,

the receiving mechanism comprises a receiving disc and a discharge chute obliquely arranged on the outlet side of the receiving disc, and

the discharge chute is obliquely arranged.

6. The expanding mechanism for stainless steel pipes according to claim 5,

the guide part comprises a guide post, a guide hole is formed in the fixing plate, and the guide post is slidably arranged in the guide hole.

7. The expanding mechanism for stainless steel pipes according to claim 6,

the feeding mechanism also comprises a transfer plate and a material placing plate;

the feeding plate and the feeding plate are arranged in parallel, the head of the transfer plate is connected with the tail of the feeding plate, and the tail of the transfer plate is connected with the head of the feeding plate.

8. The expanding mechanism for stainless steel pipes according to claim 7,

the pressing mechanism comprises a pressing cylinder and an upper closing cover fixed at the end part of a piston rod of the pressing cylinder, and a closing cover socket hole matched with the bearing socket hole is formed in the upper closing cover;

the auxiliary jacking mechanism comprises an auxiliary top plate and an auxiliary jacking column fixed on the auxiliary top plate, and an auxiliary jacking cavity is formed in the auxiliary jacking column;

the distance between the tail of the discharging plate and the head of the transit plate is matched with the distance between the tail of the discharging plate and the head of the transit plate; the distance between the tail of the transit plate and the head of the feeding plate is matched with the single stainless steel pipe.

9. A method of operating the expanding mechanism for stainless steel pipes according to claim 8,

s1, grinding the inner wall of the stainless steel pipe by the diameter expanding mechanism in the process that the diameter expanding mechanism moves to the first station in the stainless steel pipe;

s2, when the diameter expanding mechanism moves to a second station in the stainless steel pipe, the head of the stainless steel pipe is expanded by the diameter expanding mechanism;

and S3, when the diameter expanding mechanism resets, the inner wall of the stainless steel pipe is coated with passivation paste by the diameter expanding mechanism.

10. The method of operating an expanding mechanism for a stainless steel pipe according to claim 9,

s1, pushing the grinding shaft by the expanding cylinder to enable the guide spring to be extruded to the maximum forming process, turning the horn flexible sleeve outwards to wrap the shaft head and grinding the inner wall of the stainless steel pipe by the file surface, and spraying passivation paste to the flow channel and the fine holes in sequence;

s2, when the diameter expanding cylinder pushes the grinding shaft to a first station, the horn flexible sleeve is unfolded;

and S3, when the diameter expanding cylinder pulls back the grinding shaft, the horn flexible sleeve turns outwards and coats the passivation paste on the inner wall of the stainless steel pipe and grinding debris separated from the stainless steel pipe.

Technical Field

The invention relates to expanding equipment, in particular to an expanding mechanism for a stainless steel pipe and a working method of the expanding mechanism.

Background

An expanding machine in the prior art, such as chinese patent application No. CN201920875660.2, publication No. CN210059582U, application date 6 and 10 in 2019, and announcement date 2020 and 2 and 14 in 2020, is named as a sleeve forming machine, and discloses a sleeve forming machine, which includes a frame, a receiving box, and a feeding device, a discharging device, a positioning device, and an expanding device, which are arranged on the frame, wherein the feeding device is used for conveying a sleeve to the expanding device, the positioning device is used for pressing and fixing the sleeve on the expanding device, the expanding device is detachably provided with an expanding shaft core for expanding a port of the sleeve, and the discharging device is used for conveying the sleeve after expansion to the receiving box. The utility model discloses a positioner among the sleeve pipe make-up machine is used for pressing down fixedly to the sleeve pipe on the expander device, and the expander device is last detachably to be provided with and is used for carrying out the expander axle core of expander to sheathed tube port, when needs expand the pipe to the sleeve pipe of different bores, only needs the expander axle core of changing different diameters, just can realize the needs to the sleeve pipe expander of different bores.

The expanding machine has the following disadvantages:

1. the function is single, and only single diameter expansion can be realized;

2. the positioning effect is general;

3. there is no process for the treatment of the inner wall of the stainless steel tube.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the technical problem in the prior art is solved, and an expanding mechanism for the stainless steel pipe is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: an expanding mechanism for a stainless steel pipe comprises a feeding mechanism, a material bearing mechanism and a material receiving mechanism which are sequentially arranged along the advancing direction of materials;

a pressing mechanism which is suitable for pressing the stainless steel pipe on the material bearing mechanism is arranged above the material bearing mechanism, and an auxiliary jacking mechanism which is suitable for jacking the stainless steel pipe on the material bearing mechanism is arranged on one side of the material bearing mechanism; and

the other side of the pressing mechanism is provided with an expanding mechanism; wherein

When the diameter expanding mechanism moves to a first station in the stainless steel pipe, the inner wall of the stainless steel pipe is ground by the diameter expanding mechanism;

when the diameter expanding mechanism moves to a second station in the stainless steel pipe, the head of the stainless steel pipe is expanded by the diameter expanding mechanism;

and when the diameter expanding mechanism resets, the inner wall of the stainless steel pipe is coated with passivation paste by the diameter expanding mechanism.

Preferably, the expanding mechanism comprises a side bracket, an expanding cylinder fixed on the side bracket, and an expanding device positioned at the end part of a piston rod of the expanding cylinder; and

the inner sleeve of the expanding device is fixed on a fixed plate, and guide parts are arranged on two sides of the fixed plate in a mirror image manner;

the diameter expanding cylinder is suitable for pushing the diameter expanding device to a first station and a second station and pulling back the diameter expanding device, so that the diameter expanding device can grind, expand and coat passivation paste in sequence.

Preferably, the diameter expanding device comprises a diameter expanding outer sleeve, a guide spring embedded in the diameter expanding outer sleeve, and a grinding shaft sleeved in the guide spring; and

the end part of the diameter-expanding outer sleeve is a step matched with the diameter-expanding requirement, and the inside of the diameter-expanding outer sleeve is hollow and is provided with a through hole in a vertically through manner;

the grinding shaft is in a rod shape, a bearing table is arranged at the waist of the grinding shaft, a shaft head is arranged at the end part of the grinding shaft, the diameter of the shaft head is smaller than that of the grinding shaft, a horn flexible sleeve is arranged at the end part of the shaft head, a plurality of pores are formed in the outer wall of the shaft head, a flow passage is formed in the grinding shaft in a hollow mode, and a filing face is arranged on the side wall of the grinding shaft;

the guide spring is positioned in the diameter-expanding outer sleeve, the upper end of the guide spring props against the diameter-expanding outer sleeve, and the lower end of the guide spring props against the bearing table.

Preferably, the feeding mechanism comprises a feeding plate which is obliquely arranged, and a plurality of feeding notches are formed in the feeding plate;

the material bearing mechanism comprises a material bearing platform, a jacking cylinder arranged on one side of the material bearing platform and a guide part fixed on a piston rod of the jacking cylinder, wherein a bearing socket opening is formed in the end surface of the material bearing platform, and a plurality of material conveying notches are formed in the bearing socket opening; and

the guide part comprises a positioning plate, and a plurality of front lifting plates and a plurality of rear lifting plates which are fixed on the positioning plate; the end surface of the front lifting plate is provided with a front inclined slope surface, and the end surface of the rear lifting plate is provided with a rear inclined arc surface.

Preferably, the material receiving mechanism comprises a material receiving disc and a discharge groove obliquely arranged on the outlet side of the material receiving disc, and

the discharge chute is obliquely arranged.

Preferably, the guide part comprises a guide post, a guide hole is formed in the fixing plate, and the guide post is slidably disposed in the guide hole.

Preferably, the feeding mechanism further comprises a transfer plate and a material discharging plate;

the feeding plate and the feeding plate are arranged in parallel, the head of the transfer plate is connected with the tail of the feeding plate, and the tail of the transfer plate is connected with the head of the feeding plate.

Preferably, the pressing mechanism comprises a pressing cylinder and an upper closing cover fixed at the end part of a piston rod of the pressing cylinder, and the upper closing cover is provided with a closing cover socket matched with the bearing socket;

the auxiliary jacking mechanism comprises an auxiliary top plate and an auxiliary jacking column fixed on the auxiliary top plate, and an auxiliary jacking cavity is formed in the auxiliary jacking column;

the distance between the tail of the discharging plate and the head of the transit plate is matched with the distance between the tail of the discharging plate and the head of the transit plate; the distance between the tail of the transit plate and the head of the feeding plate is matched with the single stainless steel pipe.

The stainless steel pipe receiving and conveying device has the advantages that the conveying of the stainless steel pipes is realized through the feeding mechanism, a good condition is provided for subsequent expanding of the stainless steel pipes for bearing through the material bearing mechanism, and the materials after expanding are received through the material receiving mechanism; the diameter expanding mechanism is matched with the auxiliary jacking mechanism, diameter expanding, grinding and passivation paste coating are respectively realized on the stainless steel pipe, the process is simple, and the functions are various.

The invention also provides a working method of the expanding mechanism for the stainless steel pipe,

s1, grinding the inner wall of the stainless steel pipe by the diameter expanding mechanism in the process that the diameter expanding mechanism moves to the first station in the stainless steel pipe;

s2, when the diameter expanding mechanism moves to a second station in the stainless steel pipe, the head of the stainless steel pipe is expanded by the diameter expanding mechanism;

and S3, when the diameter expanding mechanism resets, the inner wall of the stainless steel pipe is coated with passivation paste by the diameter expanding mechanism.

As a preference, the first and second liquid crystal compositions are,

s1, pushing the grinding shaft by the expanding cylinder to enable the guide spring to be extruded to the maximum forming process, turning the horn flexible sleeve outwards to wrap the shaft head and grinding the inner wall of the stainless steel pipe by the file surface, and spraying passivation paste to the flow channel and the fine holes in sequence;

s2, when the diameter expanding cylinder pushes the grinding shaft to a first station, the horn flexible sleeve is unfolded;

and S3, when the diameter expanding cylinder pulls back the grinding shaft, the horn flexible sleeve turns outwards and coats the passivation paste on the inner wall of the stainless steel pipe and grinding debris separated from the stainless steel pipe.

The working method of the diameter expanding mechanism for the stainless steel pipe is simple in working process, and the processing of various processes is realized through one action, so that the processing time is greatly saved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a preferred embodiment of a stainless steel tube of the present invention;

FIG. 2 is a perspective view of a preferred embodiment of an expanding mechanism for stainless steel pipes according to the present invention;

FIG. 3 is a schematic structural view of a preferred embodiment of the feed mechanism of the present invention;

FIG. 4 is a schematic structural view of a preferred embodiment of the loading mechanism of the present invention;

FIG. 5 is a schematic structural view of a preferred embodiment of the guide of the present invention;

FIG. 6 is a schematic structural view of a preferred embodiment of the hold-down mechanism of the present invention;

FIG. 7 is a schematic structural view of a preferred embodiment of the secondary roof mechanism of the present invention;

fig. 8 is a schematic structural view of a preferred embodiment of the expanding mechanism of the present invention;

fig. 9 is a schematic structural view of a preferred embodiment of the expanding device of the present invention;

in the figure: A. stainless steel pipe, B, ladder, 100, feeding mechanism, 101, feeding plate, 102, transfer plate, 103, discharging plate, 104, feeding notch;

200. the material loading mechanism comprises a material loading mechanism 210, a material loading platform 211, a bearing socket 212, a material conveying notch 220, a jacking cylinder 230, a guide part 231, a positioning plate 232, a front lifting plate 233, a front inclined slope surface 234, a rear lifting plate 235 and a rear inclined arc surface;

300. the receiving mechanism 301, the receiving tray 302 and the discharging groove;

400. the pressing mechanism 401, the pressing cylinder 402, the upper closing cover 403 and the closing cover socket;

500. the auxiliary top mechanism comprises an auxiliary top plate 501, an auxiliary top plate 502, an auxiliary top column 503 and an auxiliary top cavity;

600. the device comprises an expanding mechanism 610, a side bracket 620, an expanding cylinder 630, an expanding device 631, an expanding outer sleeve 632, a guide spring 633, a grinding shaft 634, a bearing platform 635, a shaft head 636, a horn flexible sleeve 637, a flow channel 638, an expansion sleeve 640, a fixing plate 650, a guide part 651 and a guide column.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Example one

As shown in fig. 1 to 9, the present application mainly processes a stainless steel pipe a having a step B on the inner wall thereof, and a portion of the stainless steel pipe a having a relatively small diameter to be subjected to diameter expansion, grinding and passivation paste application.

An expanding mechanism 600 for a stainless steel pipe A comprises a feeding mechanism 100, a material bearing mechanism 200 and a material receiving mechanism 300 which are sequentially arranged along the advancing direction of materials; a pressing mechanism 400 which is positioned above the material bearing mechanism 200 and is suitable for pressing the stainless steel pipe A positioned on the material bearing mechanism 200, and an auxiliary jacking mechanism 500 which is positioned on one side of the material bearing mechanism 200 and is suitable for jacking the stainless steel pipe A positioned on the material bearing mechanism 200; and an expanding mechanism 600 is arranged at the other side of the pressing mechanism 400; wherein

When the diameter expanding mechanism 600 moves to the first station in the stainless steel pipe A, the inner wall of the stainless steel pipe A is ground by the diameter expanding mechanism 600; when the diameter expanding mechanism 600 moves to a second station in the stainless steel pipe A, the head of the stainless steel pipe A is expanded by the diameter expanding mechanism 600; and in the process of resetting the diameter expanding mechanism 600, the passivation paste is coated on the inner wall of the stainless steel pipe A by the diameter expanding mechanism 600.

The conveying of the stainless steel tube A is realized through the feeding mechanism 100, a good condition is provided for subsequent expanding of the stainless steel tube A by the bearing of the material bearing mechanism 200, and the material after expanding is accommodated through the arrangement of the material receiving mechanism 300; the diameter expanding mechanism 600 is matched with the auxiliary jacking mechanism 500, diameter expanding, grinding and passivation paste coating on the stainless steel pipe A are respectively realized, the process is simple, and the functions are various.

The expanding mechanism 600 comprises a side bracket 610, an expanding cylinder 620 fixed on the side bracket 610, and an expanding device 630 positioned at the end part of the piston rod of the expanding cylinder 620; the inner sleeve of the expanding device 630 is fixed on a fixing plate 640, and guide parts 650 are arranged on two sides of the fixing plate 640 in a mirror image manner, wherein; the expanding cylinder 620 is suitable for pushing the expanding device 630 to a first station and a second station and pulling back the expanding device 630, so that the expanding device 630 can grind, expand and coat passivation paste in sequence.

The side bracket 610 is arranged to mainly play a supporting role, such as bearing and fixing an expanding cylinder 620, the outer shell of the expanding cylinder 620 is fixed on the side bracket 610, a fixing plate 640 is arranged parallel to the plane of the side bracket 610, an expanding device 630 is carried on the fixing plate 640, the piston rod of the expanding cylinder 620 at this position firstly pushes the expanding device 630, the expanding device 630 is moved forwards to extend into the stainless steel pipe A, and the expanding device 630 achieves a primary grinding effect on the inner wall of the stainless steel pipe A in the process of gradually moving forwards;

then, the whole body continues to move to a second station, and at the moment, the expanding device 630 continues to work to realize expanding;

after the diameter expansion is finished, the diameter expanding device 630 needs to be reset in a mode that the diameter expanding device 630 is pulled back through the diameter expanding cylinder 620, and then passivation paste coating on the inner wall of the stainless steel pipe A is achieved in the process of pulling back and resetting.

Accordingly, it should be noted that the first station refers to a grinding process, i.e., when the horn flexible sleeve 636 is not yet slightly spread, and the second station refers to a process in which the horn flexible sleeve 636 is slightly spread.

Further, the diameter expanding means 630 has a more detailed structure, and the diameter expanding means 630 includes a diameter expanding outer sleeve 631, a guide spring 632 embedded in the diameter expanding outer sleeve 631, and a grinding shaft 633 internally sleeved in the guide spring 632; and

the end part of the diameter-expanding outer sleeve 631 is a step adapted to the diameter-expanding requirement, and the diameter-expanding outer sleeve 631 is hollow and is provided with a through hole which is vertically communicated; the grinding shaft 633 is in a rod shape, the waist of the grinding shaft 633 is provided with a bearing table 634, the end of the grinding shaft 633 is provided with a shaft head 635, the diameter of the shaft head 635 is smaller than that of the grinding shaft 633, the end of the shaft head 635 is provided with a horn flexible sleeve 636, a plurality of fine holes are formed in the outer wall of the shaft head 635, a flow channel 637 is formed in the grinding shaft 633 in a hollow mode, and the side wall of the grinding shaft 633 is provided with a filing face; the guide spring 632 is located inside the diameter-expanding casing 631, and the upper end of the guide spring 632 abuts against the diameter-expanding casing 631 and the lower end abuts against the bearing table 634.

The piston rod of the expanding cylinder 620 is coaxially fixed to the grinding shaft 633, and may be generally screwed, inserted, or the like. The piston rod of the expanding cylinder 620 pushes against the grinding shaft 633, so that the bearing table 634 on the grinding shaft 633 pushes against the guide spring 632, the guide spring 632 is pressed, synchronously, the grinding shaft 633 extends out of the expanding outer sleeve 631, the grinding shaft 633 extends into the stainless steel tube A, at the moment, the horn flexible sleeve 636 is pressed by the stainless steel tube A and is reversely folded to cover the shaft head 635, at the moment, the fine hole on the shaft head 635 is shielded by the horn flexible sleeve 636, partial debris is prevented from falling into the fine hole in the process that the grinding shaft 633 extends into the stainless steel tube A, and therefore the effect of protecting the fine hole is achieved to a certain extent, then, along with the advancing of the grinding shaft 633, the file of the grinding shaft 633 grinds against the inner wall of the stainless steel tube A until the horn flexible sleeve 636 is in transition with the stainless steel tube A, at the step B of the stainless steel tube A, at the moment, the horn flexible sleeve 636 slightly expands to be attached to the inner wall of the inner cavity of the stainless steel tube A with a relatively larger inner diameter until the whole horn flexible sleeve 636 completely enters into a larger inner cavity of the stainless steel tube A The stainless steel pipe A is arranged in the inner wall of the inner cavity of the stainless steel pipe A;

at this time, the step on the diameter-expanding outer sleeve 631 expands the diameter of the head of the stainless steel pipe a. Further, after the diameter expansion is completed, the grinding shaft 633 needs to be reset.

A piston rod of the expanding cylinder 620 pulls back the grinding shaft 633, and in the pulling back process, the horn flexible sleeve 636 is abutted against the step B of the stainless steel pipe A to realize turnover before realizing turnover; and passivation paste is sequentially injected into the flow channel 637 and the fine hole of the grinding shaft 633, the passivation paste is stained on the inner surface of the horn flexible sleeve 636, after the horn flexible sleeve 636 is turned over, the passivation paste is positioned on the outer surface of the horn flexible sleeve 636, and then, in the process of continuing to retreat, the passivation paste is coated on the inner wall of the stainless steel pipe A.

Similarly, during the retraction process, the stainless steel tube a has some chips on its surface due to grinding, and the passivation paste has a certain viscosity to carry the ground chips away from the inner cavity of the stainless steel tube a.

The feeding mechanism 100 comprises a feeding plate 101 which is obliquely arranged, and a plurality of feeding notches 104 are formed in the feeding plate 101;

the material bearing mechanism 200 comprises a material bearing table 210, a jacking cylinder 220 arranged on one side of the material bearing table 210 and a guide part 230 fixed on a piston rod of the jacking cylinder 220, wherein a bearing socket 211 is formed in the end surface of the material bearing table 210, and a plurality of material conveying notches 212 are formed in the bearing socket 211; and the guide part 230 includes a positioning plate 231, a plurality of front lifting plates 232 and a plurality of rear lifting plates 234 fixed to the positioning plate 231; the front lifting plate 232 has a front inclined slope surface 233 on its end surface, and the rear lifting plate 234 has a rear inclined arc surface 235 on its end surface.

The workpiece lifts the piston rod under the action of the jacking cylinder 220, the workpiece on the feeding plate 101 is synchronously lifted under the action of the front lifting plate 232, and the stainless steel pipe A rolls into the bearing socket 211 along the trend because the front lifting plate 232 has a front inclined surface 233 at the same time of lifting;

synchronously, the processed stainless steel tube a in the bearing socket 211 is lifted by the rear lifting plate 234 under the action of the jacking cylinder 220, and then slides down into the material receiving mechanism 300 under the action of the rear inclined arc surface 235.

Specifically, the receiving mechanism 300 has the following structure: the receiving mechanism 300 comprises a receiving tray 301 and a discharging groove 302 obliquely arranged on the outlet side of the receiving tray 301, and the discharging groove 302 is obliquely arranged.

Through the material receiving tray 301, the stainless steel tube a guided by the rear inclined arc surface 235 can be received and slid along the material receiving tray 301, and guided to the discharge chute 302 under the guidance of the material receiving tray 301.

Specifically, in the process of expanding the diameter of the diameter expanding cylinder 620, the guide part 650 operates, and a good guiding effect is achieved. The guide part 650 includes a guide post 651, a guide hole is formed in the fixing plate 640, and the guide post 651 is slidably disposed in the guide hole. I.e. by means of the guide post 651, sliding it back and forth within the guide hole to achieve good guidance.

Specifically, the feeding mechanism 100 further includes a transfer plate 102 and a material discharging plate 103; the material discharging plate 103 is arranged in parallel with the material feeding plate 101, the head of the transfer plate 102 is engaged with the tail of the material discharging plate 103, and the tail of the transfer plate 102 is engaged with the head of the material feeding plate 101. The pressing mechanism 400 comprises a pressing cylinder 401 and an upper closing cover 402 fixed at the end of a piston rod of the pressing cylinder 401, and the upper closing cover 402 is provided with a closing cover socket 403 matched with the bearing socket 211; the auxiliary jacking mechanism 500 comprises an auxiliary top plate 501 and an auxiliary jacking pillar 502 fixed on the auxiliary top plate 501, wherein an auxiliary jacking cavity 503 is formed in the auxiliary jacking pillar 502; the distance between the tail part of the discharging plate 103 and the head part of the transit plate 102 is matched with the single stainless steel pipe A; the distance between the tail part of the transit plate 102 and the head part of the feeding plate 101 is matched with the single stainless steel pipe A. The setting of this height is convenient for arrange full whole material, avoids the material to have the condition of piling up.

The pressing mechanism 400 is mainly used for realizing the pressing effect on the stainless steel pipe A before grinding and expanding, namely, the pressing cylinder 401 is used for pressing down the upper closing cover 402 to enable the closing cover socket 403 to be matched with the bearing socket 211;

the existence of the auxiliary jacking mechanism 500 is a positioning point for expanding the diameter of the stainless steel tube A, namely, one end of the stainless steel tube A is inserted into the auxiliary jacking cavity 503 in the auxiliary jacking column 502.

Example two

The second embodiment is carried out on the basis of the first embodiment.

The diameter-expanding outer sleeve 631 is provided with a closed cavity, the inner wall of the diameter-expanding outer sleeve 631 is provided with an opening, the opening is provided with an expansion sleeve 638, the closed cavity is filled with cooling liquid, and the cooling liquid is filled in the closed cavity

When the bearing table 634 slides, the bearing table 634 is suitable for pushing and pressing the expansion sleeve 638 to fill the inner cavity corresponding to the step with the cooling liquid; when the carrier 634 is repositioned, the expansion sleeve 638 is adapted to reposition.

It should be noted that, when the supporting table 634 presses the expansion sleeve 638, the step is also expanded in real time, so as to ensure that the coolant can be cooled in time. Synchronously, the expansion sleeve 638 can also play a certain buffering effect, so that the expanding process can be well transited.

The second station refers to when the horn flexible sleeve 636 is slightly expanded and the carriage 634 is pressing against the expansion sleeve 638.

EXAMPLE III

The third embodiment is carried out on the basis of the second embodiment.

A working method of an expanding mechanism 600 for a stainless steel tube A is disclosed, wherein the expanding mechanism 600 for the stainless steel tube A comprises a feeding mechanism 100, a material bearing mechanism 200 and a material receiving mechanism 300 which are sequentially arranged along the advancing direction of materials; a pressing mechanism 400 which is positioned above the material bearing mechanism 200 and is suitable for pressing the stainless steel pipe A positioned on the material bearing mechanism 200, and an auxiliary jacking mechanism 500 which is positioned on one side of the material bearing mechanism 200 and is suitable for jacking the stainless steel pipe A positioned on the material bearing mechanism 200; and an expanding mechanism 600 is arranged at the other side of the pressing mechanism 400;

s1, grinding the inner wall of the stainless steel pipe A by the diameter expanding mechanism 600 in the process that the diameter expanding mechanism 600 moves to the first station in the stainless steel pipe A; s2, when the diameter expanding mechanism 600 moves to the second station in the stainless steel pipe A, the head of the stainless steel pipe A is expanded by the diameter expanding mechanism 600; and S3, when the diameter expanding mechanism 600 is reset, the inner wall of the stainless steel pipe A is coated with passivation paste by the diameter expanding mechanism 600.

Specifically, the expanding mechanism 600 comprises a side bracket 610, an expanding cylinder 620 fixed on the side bracket 610, and an expanding device 630 positioned at the end part of the piston rod of the expanding cylinder 620; the inner sleeve of the expanding device 630 is fixed on a fixing plate 640, and guide parts 650 are arranged on two sides of the fixing plate 640 in a mirror image manner; the diameter expanding device 630 comprises a diameter expanding outer sleeve 631, a guide spring 632 embedded in the diameter expanding outer sleeve 631, and a grinding shaft 633 sleeved in the guide spring 632; the end part of the diameter-expanding outer sleeve 631 is a step matched with the diameter-expanding requirement, and the diameter-expanding outer sleeve 631 is hollow and is provided with a through hole which is vertically communicated; the grinding shaft 633 is in a rod shape, a bearing table 634 is arranged at the waist of the grinding shaft 633, a shaft head 635 is arranged at the end of the grinding shaft 633, the diameter of the shaft head 635 is smaller than that of the grinding shaft 633, a horn flexible sleeve 636 is arranged at the end of the shaft head 635, a plurality of fine holes are formed in the outer wall of the shaft head 635, and a flow channel 637 is formed in the grinding shaft 633 in a hollow mode; the guide spring 632 is located in the diameter-expanding outer sleeve 631, the upper end of the guide spring 632 abuts against the diameter-expanding outer sleeve 631, the lower end abuts against the bearing table 634, and the side wall of the grinding shaft 633 has a filing face;

s1, the expanding cylinder 620 pushes the grinding shaft 633 to press the guide spring 632 to the maximum forming process, the horn flexible sleeve 636 is turned outwards to wrap the shaft head 635 and the file surface grinds the inner wall of the stainless steel tube a, and passivation paste is sprayed to the flow channel 637 and the fine holes in sequence;

s2, when the expanding cylinder 620 pushes the grinding shaft 633 to the first station, the horn flexible sleeve 636 is expanded and the bearing table 634 presses the expansion sleeve 638 to guide the coolant to fill the inner cavity corresponding to the step;

s3, when the expanding cylinder 620 pulls back the grinding shaft 633, the horn flexible sleeve 636 turns outwards and coats the passivation paste on the inner wall of the stainless steel tube a and the grinding chips separated from the stainless steel tube a.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.