CN212892510U

CN212892510U - Turnover mechanism for turning flat plate articles and cleaning machine with turnover mechanism

Info

Publication number: CN212892510U
Application number: CN202021495719.4U
Authority: CN
Inventors: 陈沪; 张家玺; 卢明亮; 王俊杰
Original assignee: XIAMEN SHENYING TECHNOLOGY CO LTD
Current assignee: XIAMEN SHENYING TECHNOLOGY CO LTD
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-06
Anticipated expiration: 2030-07-23

Abstract

The utility model provides a tilting mechanism of upset flat article and cleaning machine that has this tilting mechanism, tilting mechanism mainly comprise conveyor and slant setting guider on the transport route of flat article, and flat article is spacing by guider direction in transportation process, accomplishes the upset between formula of keeping flat and the formula of inclining automatically, the utility model discloses can spread into clean assembly line with flat mode with flat article into, rethread tilting mechanism overturns to the clean stage that inclines vertical entering cleaning machine, and rethread tilting mechanism overturns to the formula of keeping flat after the cleanness is accomplished and spreads the assembly line, has reduced the manpower loss, has greatly improved the vertical clear efficiency of flat article.

Description

Turnover mechanism for turning flat plate articles and cleaning machine with turnover mechanism

Technical Field

The utility model relates to a tilting mechanism of dull and stereotyped article of upset and cleaning machine that has this mechanism.

Background

In the automatic processing process of foods such as bread or cakes, a baking tray is a common forming mold. After the cake baking molding is taken out of the baking tray, residual substances adhered in a mold cavity of the baking tray need to be cleaned, the conventional cleaning means is manual cleaning, and the manual cleaning not only wastes time and labor, but also has high cost.

Accordingly, baking tray cleaning machines for automatically cleaning baking trays are also available in the market, for example, a full-automatic cleaning system for food baking trays disclosed in chinese patent publication No. CN102669202A is mainly used for automatically cleaning baking trays by using an automatic cleaning device and an automatic air drying device, and the baking tray cleaning system of this kind is used for flatly cleaning baking trays, but most of the baking trays have a pit mold, and if the baking trays are flatly cleaned, the pit mold can accumulate water during cleaning, which affects the washing and drying effects of the baking trays. If the baking tray cleaning device is set to be in full-line side-vertical type conveying cleaning, the baking tray is very labor-consuming to stand due to certain weight of the baking tray, and the working efficiency is affected.

Therefore, how to transfer the baking tray into and out of the cleaning device in a labor-saving manner in a flat manner and automatically switch the baking tray to be in a side standing state before the cleaning step is a problem which needs to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above problems, the present invention provides a turnover mechanism for turning over a flat plate article and a cleaning machine having the same.

The utility model discloses a following technical scheme realizes:

the utility model provides a tilting mechanism of upset dull and stereotyped article, including transfer chain and linear guide structure, dull and stereotyped article are in move on the transport route of transfer chain, linear guide structure is roughly in the top or the side top setting of the transport route of transfer chain, linear guide structure along the upper reaches to low reaches of transport route are by low to high or by high to low simultaneously gradually to transport route's left side or right side are close to, dull and stereotyped article by at the in-process of carrying linear guide structure's direction, from the state of keeping flat upset to the state of standing on the side, or from the state of standing on the side upset to the state of keeping flat.

The conveying line comprises a conveying path and a linear guide device, wherein the conveying line is arranged on the conveying path, the linear guide device is arranged on the conveying path, and the linear guide device is arranged on the conveying path in a manner of being approximately parallel to the conveying direction of the conveying line.

As an embodiment structure, the conveying line pushes the flat plate articles to move on the conveying path of the conveying line, and the linear guide structure provides support for turning and guiding the flat plate articles.

Wherein, for realizing upset direction function, the transfer chain is including the conveyer belt that sets gradually and link up the supplementary transfer chain at conveyer belt conveying endpoint, the conveyer belt is used for promoting dull and stereotyped article are in the last motion of transfer route, linear guide structure is for along transfer route's upper reaches to low reaches by low to high or by high to low guide bar that is close to simultaneously to transfer route's left side or right side gradually.

In order to overcome the influence of friction force on the baking tray in the conveying path, a pushing piece for pushing the flat plate articles to move towards the conveying direction is arranged on the conveying belt, the pushing piece is connected to the conveying belt, and the vertical height of the pushing piece is larger than that of the conveying surface of the conveying belt.

The linear guide structure drives the flat plate articles to move on the conveying path of the conveying line, and simultaneously provides overturning and guiding support for the flat plate articles.

In order to realize the turning guide function, the linear guide structure is an obliquely arranged conveyor belt which gradually approaches to the left side or the right side of the conveying path from low to high or from high to low along the upstream to the downstream of the conveying path.

In order to increase the friction between the conveying belt and the baking tray, a plurality of raised cylinder structures made of flexible materials are distributed on the conveying surface of the conveying belt.

Based on foretell upset dull and stereotyped article tilting mechanism, the utility model discloses still provide a cleaning machine, the cleaning machine have as above arbitrary upset dull and stereotyped article tilting mechanism.

The utility model discloses following beneficial effect has: the utility model provides an automatic plate article tilting mechanism and have this tilting mechanism's cleaning machine of changing can spread into flat article into clean assembly line with the mode of keeping flat, and rethread tilting mechanism overturns to the formula of standing on one's side and gets into clean stage, and rethread tilting mechanism overturns to the formula of keeping flat after the cleanness is accomplished and spreads the assembly line, has reduced the manpower loss, has greatly improved vertical clear efficiency.

Drawings

FIG. 1 is a plan view of a baking pan turning mechanism in embodiment 1;

FIG. 2 is a front view of a baking tray turnover mechanism in embodiment 1;

FIG. 3 is a partial schematic view of the chain conveyor of example 1;

FIG. 4 is a front view of the neutral grill washer of embodiment 2;

FIG. 5 is a plan view of the neutral grill washer of embodiment 2;

FIG. 6 is an enlarged view of a portion of FIG. 4 at A;

FIG. 7 is a partial enlarged view at B in FIG. 5;

FIG. 8 is a front view of a tray turnover mechanism in embodiment 3;

FIG. 9 is a plan view of the tray turnover mechanism in embodiment 3;

fig. 10 is a schematic view of the structure of the rubber nail in example 3.

Description of reference numerals:

1-a frame; 2-a chain conveyor; 3-roller conveying line; 4-a guide rod; 5-a fixing frame; 6-connecting the beams; 7-a first stop lever; 8-a first limiting plate; 9-a second limiting rod; 10-oblique conveyor belt; 11-a connecting frame; 12-a second limiting plate; 13-a third limiting plate; 14-a transport platform; 15-a third stop bar; 16-a fourth stop bar; 21-pushing the hook;

41-first end of guide rod 4; 42-a second end of the guide rod 4;

101-rubber nails;

100-baking tray; 200-support legs; 300-a first motor; 400-second motor.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

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

In order to realize vertical cleaning of the baking tray, the inventor designs a baking tray cleaning production line for vertically cleaning, air drying and drying the baking tray, but the inventor finds that if the baking tray is lifted and lifted in a side-standing mode by hand and then is transferred into or out of the production line, manpower is consumed greatly, and the working efficiency is influenced; if the clamping and turning mechanism is used for executing the turning and lifting actions, in practice, the clamping and turning mechanism has a large load due to the heavy weight of the baking tray, and is easy to send faults.

Therefore, through the research of the inventor, through combining the advantage that the formula of keeping flat was introduced into and is spread the way, the inventor has provided an automatic mechanism that realizes the overware upset, can introduce into the clean assembly line with the mode of keeping flat with the overware, and the rethread tilting mechanism upset is to the formula of standing on one's side and is got into clean stage, and the rethread tilting mechanism upset is to the formula of keeping flat after the cleanness is accomplished and is spread the assembly line, has greatly improved the clear efficiency of overware.

The utility model provides a tilting mechanism of dull and stereotyped article of upset mainly comprises conveyor and the guider of slant setting on the transport route of dull and stereotyped article, and dull and stereotyped article is spacing by the guider direction in transportation process, accomplishes the upset between formula of keeping flat and the formula of inclining to erect. The guide device and the conveying device may have only conveying and guiding functions, respectively, or may be combined with each other, and are not necessarily separate mechanical components, for example, the guide device may also have a conveying function.

It is right to now combine specific embodiment the utility model discloses demonstrate:

example 1:

referring to fig. 1-3, as a preferred embodiment of the present invention, a baking tray turning mechanism is provided, which mainly includes a frame 1, a chain conveyor 2, a roller conveyor 3, a guide rod 4, a first limiting rod 7 and a first limiting plate 8. Wherein the frame 1 is connected by supporting leg 200 and is supported on ground, has set gradually chain conveyor 2 and cylinder transfer chain 3 in frame 1, and chain conveyor 2 and cylinder transfer chain 3 have the motor to drive respectively (not shown in the figure). The guide rod 4 is arranged above the roller conveying line 3, the guide rod 4 is connected to the fixing frame 5, and the fixing frame 5 is fixed on the rack 1 through the connecting beam 6. The connecting beam 6 is disposed in the gap between the rollers of the roller conveyor line 3 so as not to interfere with the rotation of the rollers.

Specifically, the guide rod 4 is obliquely arranged from low to high, and the guide rod 4 gradually approaches to the left side or the right side of the conveying path of the roller conveying line 3 along the direction of the guide rod 4, and in this embodiment, the guide rod 4 gradually approaches to the first limiting plate 8 arranged on one side of the roller conveying line 3 along the direction of the guide rod. In this way, when the grill pan 100 is conveyed along the conveyor line of the roller conveyor line 3, the grill pan 100 can be guided from a flat state to a side-standing state by the guide rod 4 which is inclined so as to gradually approach the first stopper plate 8 from a low position to a high position. And in order to guarantee the stability of the transmission of baking tray 100 when upset and side stand, on the transfer chain of roller transfer chain 3 guide bar 4 one side that faces mutually set up linear distribution's linear conflict structure in addition, in this embodiment, linear conflict structure including the horizontal first limiting plate 8 that sets up of direction of delivery that is on a parallel with roller transfer chain 3, first gag lever post 7 and following second gag lever post 9 etc. first limiting plate 8 fixed connection is in frame 1, and first gag lever post 7 is connected on first limiting plate 8, and first gag lever post 7 is on a parallel with the horizontal setting of direction of delivery of roller transfer chain 3, and first gag lever post 7 highly is higher than the height that baking tray 100 kept flat when chain conveyor 2. After the baking tray 100 is received by the roller conveyor line 3, one side of the baking tray 100 enters between the first limiting rod 7 and the roller conveyor line 3 and is gradually lifted up under the guidance of the guide rod 4, one end of the baking tray 100, which is close to the first limiting plate 8, abuts against the first limiting plate 8 under the action of gravity, and under the guidance action of the guide rod 4 and the limiting action of the first limiting rod 7, the baking tray 100 is gradually turned to a side-standing state in the direction towards the first limiting plate 8. First gag lever post 7 can not only restrict the direction that overware 100 overturns for orientation first limiting plate 8, can also make overware 100 overturn for the side stand state after the lower extreme can all be in on the cylinder (rather than have the part to be in the contained angle of first limiting plate 8 and cylinder transfer chain 3), make overware 100 can carry more steadily. In this embodiment, the first limiting rod 7 and the guide rod 4 are both of polished rod structures. The above-mentioned linear interference structure, such as the first limiting rod 7 and the first limiting plate 8, is not necessary, and the baking tray 100 can be turned over already by being limited by the guiding rod 4 during the transmission process, but the turning and the transmission of the baking tray 100 can be more stable after the linear interference structure is provided.

In the direction of the conveying path of the roller conveyor line 3, it is defined that the guide bar 4 is at a first end 41 at the end facing the entrance of the conveying path and that the guide bar 4 is at a second end 42 at the end facing the exit of the conveying path. The first end 41 of guide bar 4 should set up in the linking department of chain conveyor 2 and cylinder transfer chain 3, and in height, the first end 41 of guide bar 4 should be less than the conveying face height of chain conveyor 2, and after carrying overware 100 on chain conveyor 2, chain conveyor 2 can carry overware 100 steadily and then (shovel) and lean on guide bar 4. The first end 41 of the guide rod 4 can be smoothly rounded to better receive the grill pan 100.

After the baking tray 100 is abutted on the guide rod 4 at one side, the other end is supported by the roller conveyor line 3, at this time, the baking tray 100 is influenced by the friction force brought by the guide rod 4 when continuously moving to the conveying path, in order to help overcome the influence, the following baking tray 100 on the chain conveyor 2 can generate enough propelling force to the baking tray 100 which is being turned over on the roller conveyor line 3, in the preferred embodiment, a push hook 21 is further arranged on the chain conveyor 2, the push hook 21 is provided with a plurality of chains which are arranged on the chain conveyor 2, the height of the push hook 21 is larger than that of the chains in the vertical direction, and specifically, the push hook 21 can be a solid block in a shape of an inverted J. As a more convenient solution, the push hook 21 can also be just a square block, as long as it can push the baking pan 100 against the pan body of the baking pan 100 by means of the movement of the chain conveyor 2. When the baking tray 100 is used, a plurality of baking trays 100 are continuously placed on the chain conveyor 2, and then the baking trays 100 placed later can push the baking tray 100 placed first to gradually push and convey the baking tray 100 forward through the conveying of the chain conveyor 2 and the pushing of the pushing hooks 21. The roller conveyor line 3 may also provide some power assist propulsion, but if the bakeware 100 is light enough, or the chain conveyor 2 is powered enough, the roller conveyor line 3 may also be configured to be driven to reduce power consumption. In other embodiments, the whole conveying line can be set as the chain-type conveying belt 2, but the contact area between the baking tray 100 and the driving plane is large, which is not beneficial to the realization of overturning; alternatively, the entire conveyor line can also be provided as a roller conveyor line 3, but this has a lower drive force on the baking pan. In general, the solution of the chain conveyor 2+ the roller conveyor line 3 is preferred.

A second limiting rod 9 which is transversely arranged is further arranged above the roller conveying line 3 at the rear section of the conveying path of the roller conveying line 3, the height of the second limiting rod 9 is slightly smaller than that of the baking tray 100 which is turned over to the side standing state on the roller conveying line 3, after the baking tray 100 is turned over to the side standing state, the two sides of the upper end of the baking tray 100 in the side standing state are limited by the second limiting rod 9 and the second end 42 of the guide rod 4 in the front and back direction, so that the baking tray 100 is prevented from toppling over, and the baking tray 100 is conveyed to a cleaning flow in the side standing state smoothly. In addition, in order to more smoothly maintain the grill pan 100 in the side standing state on the conveying path, a set of lower limiting rods (not shown) facing each other is additionally provided at both sides of the lower end of the grill pan 100 in the side standing state, and the interval between the lower limiting rods is equivalent to (slightly wider than) the width of the grill pan 100 in the side standing state.

The linear interference structure, such as the first limiting rod 7, the first limiting plate 8 and the second limiting rod 9, may be continuous as in the embodiment, but may also be discontinuous and disposed on the conveying path at certain intervals according to the size of the baking tray 100, as long as the interference limiting function is satisfied. For example: the roller of the roller conveyor line 3 may be provided with a protrusion surrounding the surface of the roller, and the protrusion is disposed on a plurality of rollers at a certain interval (the smaller the interval is set to be more favorable for the stability of the support, but the cost is increased, depending on the size of the baking tray 100), so as to replace the first limiting plate 8 to support the baking tray 100.

The structure in this embodiment can also be used to turn the baking tray 100 from the side standing state to the flat state, and only the transmission direction of the baking tray 100 needs to be reversed, that is, the end of the guiding rod 4 on the roller conveying line 3, which is higher and is close to the first limiting plate 8, is used as the transmission starting point to be transmitted into the side standing baking tray 100, and the transmission direction of the roller conveying line 3 is reversed, so that the reverse turning structure of the baking tray 100 from the side standing state to the flat state can be realized, and the baking tray 100 itself has gravity, and can slide down when leaning on the guiding rod 4, and under the condition that the transmission power is enough to be transmitted out of the baking tray 100, the chain-type conveying belt 2 is not required when the structure in this embodiment is.

Example 2:

referring to fig. 4-7, the present embodiment provides a vertical baking tray cleaning machine, which mainly includes a device for implementing the following steps:

i: a turnover transfer mechanism for turning over the baking tray from a flat state to a side-standing state;

II, a cleaning mechanism for cleaning the side-standing baking tray;

and III, a turnover delivery mechanism for turning the baking tray from a side standing state to a flat state.

Wherein, the device in the step I adopts the overturning structure provided in the embodiment 1. The apparatus in step III employs the reverse flip structure provided in example 1.

Wherein, the cleaning mechanism in step II includes a cleaning chamber, a drying chamber, etc. connected in sequence, the cleaning mechanism can be realized by means of the prior art, and those skilled in the art can easily imagine steps and technical means for cleaning the vertical baking tray, and will not be described herein again.

The cleaning mechanism in step II is provided with a conveying platform 14 for conveying the baking tray, in order to keep the baking tray stably in a side standing state, the cleaning mechanism is further provided with two sets of third limiting rods 15 and fourth limiting rods 16 facing each other on both sides of the upper end and the lower end of the baking tray 100 in the side standing state in the conveying direction of the conveying platform 14, and the interval between the two support rods of the third limiting rods 15 and the fourth limiting rods 16 is equivalent to (slightly wider than) the width of the baking tray 100 in the side standing state.

Example 3:

referring to fig. 8-10, as a preferred embodiment of the present invention, a baking tray turning mechanism is provided, which mainly includes an inclined conveyor belt 10, a roller conveyor line 3, a second limiting plate 12 and a third limiting plate 13, the inclined conveyor belt 10 and the roller conveyor line 3 are connected and supported on the ground by support legs 200, and the two are fixed by a connecting frame 11, and the inclined conveyor belt 10 and the roller conveyor line 3 are driven by a first motor 300 and a second motor 400 respectively.

Specifically, the second limiting plate 12 is transversely arranged on the roller conveyor line 3 in parallel with the conveying direction of the roller conveyor line 3, the inclined conveyor belt 10 is obliquely arranged from low to high, and the inclined conveyor belt 10 gradually approaches the second limiting plate 12 along the conveying direction of the roller conveyor line 3. After the baking tray 100 is carried on the oblique conveyor belt 10 and the roller conveyor line 3, the baking tray 100 is driven by the oblique conveyor belt 10 and the roller conveyor line 3 to be gradually conveyed, one end of the baking tray 100 is abutted by the second limiting plate 12 under the action of gravity, the other end of the baking tray 100 can be gradually guided to the oblique conveyor belt 10 which is close to the oblique position of the second limiting plate 12, and the baking tray is guided to be in a side standing state from a flat state.

In this embodiment, for material saving and reduce cost, the cylinder of cylinder transfer chain 3 sets up to be shorter, nevertheless can satisfy and bear the required length of overware 100, simultaneously in order to prevent that overware 100 from following cylinder transfer chain 3 landing at the in-process of upset, and make overware 100 can steadily keep the side standing state, still be equipped with third limiting plate 13 at the opposite side of the relative second limiting plate 12 of cylinder transfer chain 3, be equipped with the second gag lever post 9 of horizontal setting in the back end of 3 delivery routes of cylinder transfer chain above cylinder transfer chain 3.

In this embodiment, the biggest difference from embodiment 1 is that: the propulsion used in embodiment 1 is that the front grill pan is pushed by the rear grill pan (the power of the chain conveyor 2), and the guide bar 4 only provides a supporting function in the turning direction. The inclined conveyor belt 10 in this embodiment 3 is a power supplier that not only provides a supporting function in the turning direction, but also conveys the baking pan forward. In this embodiment, as a preferable scheme, in order to enhance the friction between the inclined conveyor belt 10 and the baking tray 100, so that the inclined conveyor belt 10 has a larger pushing force and more stable support for the baking tray 100, and further drives the baking tray 100 to convey forward and turn over at the same time, the inclined conveyor belt 10 is further provided with rubber nails 101. Specifically, the plurality of protruding rubber pins 101 are arranged in a group of strips, and the plurality of groups of strip-shaped arranged rubber pins 101 are densely arranged on the oblique conveyor belt 10 at the same interval to form a strip-shaped rubber pin structure.

In this embodiment, the distance between the roller conveyor line 3 and the inclined conveyor belt 10 can be adjusted by changing the length of the connecting frame 11, so as to be suitable for baking trays with different widths.

In this embodiment, the roller conveyor line 3 and the oblique conveyor belt 10 are both driven by a motor, and in order to ensure the stability of the conveyance of the baking tray 100, the conveying rates of the roller conveyor line 3 and the oblique conveyor belt 10 in the horizontal direction are consistent. However, the roller conveyor line 3 may also be arranged to be driven in case the power of the oblique conveyor 10 is sufficient.

The structure in this embodiment can also be used to turn the baking tray 100 from the side standing state to the flat state, and only the conveying direction of the baking tray 100 needs to be reversed, that is, the end of the inclined conveyor belt 10 higher and closer to the second limiting plate 12 is used as a conveying starting point to be conveyed into the side standing baking tray 100, and the conveying directions of the roller conveyor line 3 and the inclined conveyor belt 10 are reversed, so that the reverse turning structure for turning the baking tray 100 from the side standing state to the flat state can be realized.

Example 4:

referring to embodiment 2, based on the turning mechanism provided in embodiment 3, this embodiment further provides a vertical baking tray cleaning machine, which has a turning-in mechanism, a cleaning mechanism and a turning-out mechanism, where the turning-in mechanism and the turning-out mechanism adopt the turning-over mechanism and the reverse turning-over mechanism in embodiment 3. Wherein the cleaning mechanism can adopt the structure and function of the cleaning mechanism in the embodiment 2 (see fig. 4-7).

In the above embodiments 1-4, the turnover mechanism for turning over a flat article provided by the present invention is described by taking a baking tray as an example, but the turnover mechanism can also be applied to a generally flat-plate-shaped object to be cleaned, such as a dinner plate.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a tilting mechanism of upset dull and stereotyped article, includes transfer chain and linear guide structure, its characterized in that: the flat plate article moves on the conveying path of the conveying line, the linear guide structure is arranged above or laterally above the conveying path of the conveying line, the linear guide structure gradually approaches to the left side or the right side of the conveying path from low to high or from high to low along the upstream to the downstream of the conveying path, and the flat plate article is guided by the linear guide structure in the conveying process and is turned from a flat state to a side standing state or from the side standing state to the flat state.

2. A turnover mechanism for turnover a flat sheet article as set forth in claim 1, wherein: the conveying line is characterized by further comprising a linear abutting structure which is arranged on the conveying path and faces the linear guide structure, the linear abutting structure is arranged approximately parallel to the conveying direction of the conveying line, and the flat plate article is abutted and limited by the linear abutting structure in the conveying process.

3. A turnover mechanism for turnover a flat sheet article as set forth in claim 1, wherein: the conveying line pushes the flat plate articles to move on the conveying path of the conveying line, and the linear guide structure provides support for overturning and guiding the flat plate articles.

4. A turnover mechanism for turnover a flat sheet article as set forth in claim 3, wherein: the conveying line comprises a conveying belt and an auxiliary conveying line, the conveying belt is sequentially arranged, the auxiliary conveying line is connected to the conveying end point of the conveying belt, the conveying belt is used for pushing the flat plate articles to move on the conveying path, and the linear guide structure is a guide rod which is arranged along the conveying path from the upstream to the downstream from low to high or from high to low and is gradually close to the left side or the right side of the conveying path.

5. A turnover mechanism for turnover a flat sheet article as set forth in claim 4, wherein: the conveying belt is provided with a pushing piece for pushing the flat plate article to move towards the conveying direction, the pushing piece is connected to the conveying belt, and the vertical height of the pushing piece is larger than that of the conveying surface of the conveying belt.

6. A turnover mechanism for turnover a flat sheet article as set forth in claim 1, wherein: the linear guide structure drives the flat plate articles to move on the conveying path of the conveying line, and simultaneously provides support for overturning and guiding the flat plate articles.

7. A turnover mechanism for turnover a flat sheet article as set forth in claim 6, wherein: the linear guide structure is a conveyor belt which is obliquely arranged along the upstream to the downstream of the conveying path from low to high or from high to low and gradually approaches to the left side or the right side of the conveying path.

8. A turnover mechanism for turnover a flat sheet article as set forth in claim 7, wherein: a plurality of raised cylinder structures made of flexible materials are distributed on the conveying surface of the conveying belt.

9. A cleaning machine characterized in that it comprises at least a turning mechanism according to any one of claims 1-8.