CN213923272U

CN213923272U - Paper separating mechanism of single-sheet printer

Info

Publication number: CN213923272U
Application number: CN202022994826.8U
Authority: CN
Inventors: 周永生
Original assignee: Shantou High And New Technology Industrial Development Zone Ju Sheng Science And Technology Ltd S
Current assignee: Shantou High And New Technology Industrial Development Zone Ju Sheng Science And Technology Ltd S
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-08-10
Anticipated expiration: 2030-12-14

Abstract

The utility model relates to a sheet separating mechanism of sola printer, including frame, paper conveyer belt, branch paper support, branch paper sword and can carry out the high position adjustment mechanism who adjusts to the high position of branch paper sword, paper conveyer belt installs on the frame, and paper conveyer belt has the antegrade section that moves from the front to the back, and the branch paper support is located directly over the antegrade section of paper conveyer belt, the lower part of branch paper support is equipped with branch paper sword installation cavity, and the lower extreme opening of branch paper sword installation cavity is on the bottom surface of branch paper support, and high position adjustment mechanism installs on the branch paper support, and in the branch paper sword installation cavity was located to the branch paper sword, the lower extreme of branch paper sword was exposed in the middle zone outside of branch paper support bottom from the lower extreme opening of branch paper sword installation cavity, and the lower extreme of branch paper sword is equipped with the first branch paper inclined plane of downward sloping gradually from the front to the back. The utility model discloses can separate out one by one the paper that is in the pile up state automatically, can ensure that the paper that sends into printing mechanism only one, be favorable to guaranteeing to print the effect.

Description

Paper separating mechanism of single-sheet printer

Technical Field

The utility model relates to a printer technical field, concretely relates to sheet separating mechanism of sola printer.

Background

The single-sheet printer, also called single-sheet bar code printer, is a professional printing device which takes various labels, hang tags, washing cloth and the like as paper and can rapidly print a large number of bar codes, characters, symbols and pictures.

In the existing single-sheet printer, paper to be printed is firstly conveyed into a printing mechanism one by a paper feeding mechanism, and then the paper is printed on the paper by the printing mechanism and then sent out; the paper feeding mechanism is generally a conveying belt, a baffle is arranged above the conveying belt, an operator adjusts the height position of the baffle in advance and adjusts the size of a gap between the baffle and the conveying belt, so that when paper is conveyed by the conveying belt, only one piece of paper passes through the gap between the baffle and the conveying belt at a time, however, the paper in a stacking state is difficult to separate one by one through the baffle, the situation that two pieces of paper are overlapped together and enter a printing mechanism is easy to occur in the paper feeding process, the printing mechanism is caused to print the two pieces of overlapped paper simultaneously, the paper is wasted, and the final printing effect is influenced. In addition, the adjustment operation of the baffle is difficult to control, and is very troublesome and inefficient for general office clerks.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a sola printer's branch paper mechanism is provided, this kind of branch paper mechanism can separate out one by one the paper that is in the pile up state automatically, can ensure that the paper that sends into printing mechanism only one, is favorable to guaranteeing to print the effect. The technical scheme is as follows:

the utility model provides a sheet-fed printer's branch paper mechanism, includes frame and paper conveyer belt, and paper conveyer belt installs on the frame, and paper conveyer belt has from preceding section of advancing to the back removal, its characterized in that: the paper separating mechanism further comprises a paper separating support, a paper separating cutter and a height adjusting mechanism capable of adjusting the height position of the paper separating cutter, the paper separating support is arranged right above the forward section of the paper conveying belt, a paper separating cutter mounting cavity is arranged on the lower portion of the paper separating support, the lower end opening of the paper separating cutter mounting cavity is formed in the bottom surface of the paper separating support, the height adjusting mechanism is installed on the paper separating support, the paper separating cutter is arranged in the paper separating cutter mounting cavity, the lower end of the paper separating cutter is exposed out of the middle area of the bottom of the paper separating support from the lower end opening of the paper separating cutter mounting cavity, and the lower end of the paper separating cutter is provided with a first paper separating inclined surface which gradually inclines downwards from front to back.

Before paper feeding, the height position of the paper dividing knife can be adjusted through the height adjusting mechanism according to the thickness value of paper to be printed, so that the size of a gap between the lower end of the paper dividing knife and the forward section of the paper conveying belt is equivalent to the thickness of the paper to be printed. When paper is fed, a plurality of pieces of paper to be printed in a stacked state are driven by the forward section of the paper conveying belt to move from front to back; when the paper to be printed reaches the front side of the paper separating support, each piece of paper positioned higher than the bottom surface of the paper separating support stops moving under the blocking of the front side surface of the paper separating support, and each piece of paper positioned lower than the bottom surface of the paper separating support passes through a paper conveying channel formed between the paper separating support and the front section of the paper conveying belt under the conveying of the paper conveying belt, so that the first separation of the paper is realized; when the paper entering the paper conveying channel reaches the first paper dividing inclined surface of the paper dividing knife under the driving of the paper conveying belt advancing section, the number of the paper is gradually reduced under the blocking of the first paper dividing inclined surface (at the moment, the rest of the paper except the lowest paper is suspended and moves under the blocking of the first paper dividing inclined surface of the paper dividing knife), the lowest paper passes through the space between the lower end of the paper dividing knife and the paper conveying belt advancing section and is smoothly separated from the rest of the paper, the second separation of the paper is realized, and only one piece of paper fed into the printing mechanism is ensured. The lower end of the paper separating knife is exposed out of the middle area of the bottom of the paper separating support, a paper conveying channel is formed between the paper separating support and the paper conveying belt advancing section, the front side face of the paper separating support realizes the first separation of paper, and the paper separating knife realizes the second separation of the paper in the paper conveying channel, so that the paper to be printed is automatically separated one by one, only one paper fed into the printing mechanism is ensured, and the printing effect is favorably ensured. In addition, the paper separating knife mounting cavity is formed in the bottom of the paper separating support, and the paper separating knife is mounted in the paper separating support, so that the mounting position of the paper separating knife is convenient to adjust, and the lower end of the paper separating knife can be accurately matched with the forward section of the paper conveying belt.

In a preferable scheme, the paper separating support is provided with a first screw hole and a first guide hole which run up and down, the first screw hole, the first guide hole and the paper separating cutter mounting cavity are sequentially communicated from top to bottom, the aperture of the first screw hole is larger than that of the first guide hole, and an annular limiting step is arranged between the lower end of the first screw hole and the upper end of the first guide hole; the height adjusting mechanism comprises a first guide pillar, a compression spring and a first adjusting screw rod, the upper part of the first guide pillar is positioned in a first screw hole, the middle part of the first guide pillar is positioned in a first guide hole, and the lower part of the first guide pillar is positioned in the paper separating cutter mounting cavity; the paper separating knife is arranged at the lower end of the first guide pillar; the upper end of the first guide pillar is provided with a limiting block, the compression spring is sleeved on the upper part of the first guide pillar and is positioned between the limiting block and the annular limiting step, the upper end of the compression spring is in close contact with the limiting block, and the lower end of the compression spring is in close contact with the annular limiting step; the first adjusting screw rod is positioned in the first screw hole and meshed with the first screw hole, and the lower end of the first adjusting screw rod is in contact fit with the limiting block. Among the above-mentioned height adjusting mechanism, the upper portion outside cover of first guide pillar has compression spring, under compression spring's effect, there is the trend of upward movement in first guide pillar, and first adjusting screw installs in first screw, and first adjusting screw lower extreme and stopper contact cooperation, can be spacing to first guide pillar, like this, can make first guide pillar and branch paper sword height position under compression spring and first adjusting screw's combined action keep unchangeable, thereby make the clearance size between branch paper sword lower extreme and the paper conveyer belt section of advancing keep unchangeable. When the height position of the paper separating knife needs to be adjusted to be low, the first adjusting screw rod is rotated in the forward direction, so that the first adjusting screw rod moves downwards along the first screw hole, and the height positions of the first guide pillar and the paper separating knife are adjusted to be low; when the height position of the paper separating knife needs to be heightened, the first adjusting screw rod is rotated reversely, so that the first adjusting screw rod rises along the first screw hole, the height positions of the first guide pillar and the paper separating knife are heightened, the operation is convenient, and the adjustment is accurate.

In a more preferable embodiment, a first adjusting wheel is fixedly mounted at an upper end of the first adjusting screw. The first adjusting wheel can be rotated forward or reversely, so that the first adjusting screw rod moves up or down along the first screw hole, the height position of the paper splitting knife can be adjusted, and the operation is more convenient.

In a more preferable scheme, the bottom of the front side surface of the paper separating support is provided with an installation opening, and a sealing plate is detachably arranged on the installation opening. When the paper splitting knife needs to be installed or detached, the sealing plate is detached from the installation opening, so that the operation is more convenient.

In a preferable scheme, the front end of the bottom surface of the paper separating support is provided with a second paper separating inclined surface which is gradually inclined downwards from front to back. The plurality of paper sheets in the stacking state are firstly blocked by the second paper dividing inclined surface, so that the number of the paper sheets entering the lower part of the paper dividing support is gradually reduced (generally, the number of the paper sheets reaching the first paper dividing inclined surface is controlled to be 1-3), and the paper dividing of the paper dividing knife is smoother.

In a preferable scheme, the back side of the bottom of the paper separating support is provided with a paper pressing block, and the bottom surface of the paper pressing block is flush with the bottom surface of the paper separating support. When the paper passes over the paper separating support, the paper pressing block is used for pressing the paper to prevent the paper from warping upwards, and the paper conveying belt is ensured to convey the paper into the printing mechanism smoothly.

In a preferred scheme, the paper conveying belt comprises a conveying motor, an annular belt, two rotating shafts and two transmission belt wheels, wherein the conveying motor is arranged on the base, the two rotating shafts can be rotatably arranged on the base and are arranged side by side in front and back, one rotating shaft is in transmission connection with a power output shaft of the conveying motor, the two transmission belt wheels are respectively arranged on the corresponding rotating shafts, the two transmission belt wheels tension the annular belt together, and the annular belt is provided with a forward section moving from front to back and a return section below the forward section; the paper separating knife is arranged right above the driving belt wheel at the rear side. When the paper feeding device works, the conveying motor drives the corresponding rotating shaft and the transmission belt wheel on the rotating shaft to rotate, and the front section of the annular belt drives paper to move from front to back; because the driving belt wheel at the rear side can support the rear end of the forward section of the endless belt, and the lower end of the paper separating knife is arranged right above the driving belt wheel at the rear side, the forward section of the endless belt and the paper separating compression roller can be more stably matched with each other, so that the size of a gap between the lower end of the paper separating knife and the forward section of the paper conveying belt is kept unchanged, and only one piece of paper fed into the printing mechanism is ensured.

In a more preferred scheme, above-mentioned paper mechanism that divides still includes two spacing risers of controlling setting side by side, divide paper support, endless belt, two driving pulley to all locate between two spacing risers. Usually, through holes for two rotating shafts to pass through are formed on the two limiting vertical plates. The two limiting vertical plates can limit the position of paper on the paper conveying belt in the left and right directions, so that the position of the paper is prevented from deviating in the conveying process; and two spacing risers and the preceding middle part of the preceding section of annular band constitute the paper storage tank, and operating personnel can place the paper of waiting to print in the paper storage tank.

In a further more preferable scheme, the front side edge of one limiting vertical plate is positioned behind the front side edge of the other limiting vertical plate. Like this, can form the paper mouth that adds of storing up the paper groove in spacing riser front side, during the operating personnel accessible adds the paper mouth and puts into the paper groove of storing up of waiting to print, convenient operation.

In a further more preferred scheme, above-mentioned paper mechanism that divides still includes two support wheelsets, and two support wheelsets set up side by side the left and right sides of girdle, support wheelset include from preceding to a plurality of supporting wheels of back range in proper order, and each supporting wheel all can rotate and install on a side that corresponding spacing riser is close to the girdle. Typically, the highest point of the tread of each support wheel is flush with or slightly below the upper surface of the leading section of the elastomeric belt. Two support wheelsets are used for playing the supporting role to the both sides border of paper on the endless belt, prevent that the paper from dropping from one side of endless belt for the paper conveyer belt is more steady to the transport of paper.

In a further more preferable scheme, the supporting wheel adopts a bearing, and an inner ring of the bearing is fixedly arranged on the limiting vertical plate.

In a further more preferable scheme, the paper separating support and the two limiting vertical plates are both arranged on the base through a left-right adjusting mechanism; the left-right adjusting mechanism comprises at least one second adjusting screw rod and at least one second guide rod, the second guide rod is arranged on the base and moves left and right, and the second adjusting screw rod is rotatably arranged on the base and is parallel to the second guide rod; the paper separating support is provided with at least one second guide hole and at least one second screw hole, the paper separating support is provided with at least one third guide hole and at least one third screw hole, the third guide hole is formed in the position-limiting vertical plate, the second guide holes of the position-limiting vertical plate are identical to the second guide rods in number and in one-to-one correspondence, the second guide rods sequentially penetrate through the second guide holes of one position-limiting vertical plate, the third guide holes of the paper separating support and the second guide holes of the other position-limiting vertical plate, the third screw holes and the second screw holes of the position-limiting vertical plate are identical to the second adjusting screws in number and in one-to-one correspondence, and the second adjusting screws sequentially penetrate through the second screw holes of one position-limiting vertical plate, the third screw holes of the paper separating support and the second screw holes of the other position-limiting vertical plate. In a further preferred embodiment, a second adjusting wheel is fixedly mounted at one end of the second adjusting screw. By adopting the structure, the positions of the paper splitting support and the two limiting vertical plates in the left and right directions can be adjusted through the left and right adjusting mechanisms so as to adjust the positions of the lower end of the paper splitting knife and the paper to be printed in the left and right directions and enable the positions of the paper splitting knife and the paper to be printed to correspond to the positions of the printing heads of the printing mechanism; during adjustment, the second adjusting screw rod rotates forwards or reversely by rotating the second adjusting wheel, the paper separating support and the two limiting vertical plates are driven to move leftwards or rightwards for a certain distance along the second guide rod, and the positions of the lower end of the paper separating knife and the paper to be printed in the left and right directions are adjusted.

The utility model discloses a divide paper mechanism to pass through frame, paper conveyer belt, branch paper support, first guide pillar, compression spring, first adjusting screw and divide the cooperation between the paper sword, can separate out one by one the paper that is in the stacked state automatically, can ensure that the paper that sends into printing mechanism only has one, is favorable to guaranteeing to print the effect. In addition, the paper separating knife mounting cavity is formed in the bottom of the paper separating support, and the paper separating knife is mounted in the paper separating support, so that the mounting position of the paper separating knife is convenient to adjust, and the lower end of the paper separating knife can be accurately matched with the forward section of the paper conveying belt.

Drawings

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

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a top view of fig. 1.

Detailed Description

As shown in fig. 1 to 3, the paper separating mechanism of the sheet-fed printer includes a base (not shown), a paper conveying belt 2, a paper separating support 3, a paper separating blade 4, and a height adjusting mechanism 5 capable of adjusting the height position of the paper separating blade 4; the paper conveying belt 2 comprises a conveying motor (not shown in the figure), an annular belt 22, two rotating shafts 23 and two driving belt wheels 24, wherein the conveying motor is arranged on the base, the two rotating shafts 23 can be rotatably arranged on the base and are arranged side by side in the front-back direction, one rotating shaft 23 is in driving connection with a power output shaft of the conveying motor, the two driving belt wheels 24 are respectively arranged on the corresponding rotating shafts 23, the two driving belt wheels 24 jointly tension the annular belt 22, and the annular belt 22 is provided with a forward section 221 moving from front to back and a return section 222 below the forward section; the paper separating support 3 is arranged right above the annular belt advancing section 221, a paper separating knife installation cavity 301 is arranged at the lower part of the paper separating support 3, the lower end opening of the paper separating knife installation cavity 301 is arranged on the bottom surface of the paper separating support 3, the height adjusting mechanism 5 is arranged on the paper separating support 3, the paper separating knife 4 is arranged in the paper separating knife installation cavity 301 and is arranged right above a driving belt wheel 24 at the rear side, the lower end of the paper separating knife 4 is exposed out of the middle area of the bottom of the paper separating support 3 from the lower end opening of the paper separating knife installation cavity 301, and a first paper separating inclined surface 41 which is gradually inclined downwards from front to back is arranged at the lower end of the paper separating knife 4.

In this embodiment, the paper separating support 3 is provided with a first guide hole 302 and a first screw hole 303 which run up and down, the first screw hole 303, the first guide hole 302 and the paper separating cutter installation cavity 301 are sequentially communicated from top to bottom, the aperture of the first screw hole 303 is larger than that of the first guide hole 302, and an annular limiting step 304 is arranged between the lower end of the first screw hole 303 and the upper end of the first guide hole 302; the height adjusting mechanism 5 comprises a first guide post 51, a compression spring 52 and a first adjusting screw 53, wherein the upper part of the first guide post 51 is positioned in a first screw hole 303, the middle part of the first guide post 51 is positioned in a first guide hole 302, and the lower part of the first guide post 51 is positioned in a paper separating knife mounting cavity 301; the paper separating blade 4 is arranged at the lower end of the first guide post 51 and is positioned at the rear side of the first guide post 51; the upper end of the first guide post 51 is provided with a limit block 511, the compression spring 52 is sleeved on the upper part of the first guide post 51 and is positioned between the limit block 511 and the annular limit step 304, the upper end of the compression spring 52 is tightly contacted with the limit block 511, and the lower end of the compression spring 52 is tightly contacted with the annular limit step 304; the first adjusting screw 53 is located in the first screw hole 303 and meshed with the first screw hole 303, the lower end of the first adjusting screw 53 is in contact fit with the limiting block 511, the upper end of the first adjusting screw 53 is exposed out of the top of the paper separating support 3, and the upper end of the first adjusting screw 53 is fixedly provided with a first adjusting wheel 531.

In this embodiment, the bottom of the front side of the paper separating support 3 is provided with an installation opening 305, and a sealing plate 306 is detachably installed on the installation opening 305. When the paper splitting knife 4 needs to be mounted or dismounted, the sealing plate 306 is firstly dismounted from the mounting opening 305, so that the operation is more convenient.

In the present embodiment, the front end of the bottom surface of the paper separation holder 3 is provided with a second paper separation slope 32 which gradually slopes downward from front to back. The plurality of stacked sheets are firstly blocked by the second sheet separating slope 32, so that the number of sheets entering the lower part of the sheet separating support 3 is gradually reduced (generally, the number of sheets reaching the first sheet separating slope 41 is controlled to be 1-3), and the sheet separation of the sheet separating knife 4 is smoother.

In the present embodiment, the paper separation holder 3 is provided with a paper pressing block 33 at the bottom rear side, and the bottom surface of the paper pressing block 33 is flush with the bottom surface of the paper separation holder 3. The paper pressing block 33 is used to press the paper to prevent the paper from warping when the paper passes over the paper separating support 3, ensuring that the paper can be smoothly fed into the printing mechanism by the paper conveying belt 2.

Above-mentioned divide paper mechanism still includes controls two spacing risers 6 that set up side by side, divides paper support 3, endless belt 22, two driving pulley 24 all to locate between two spacing risers 6, sets up the through-hole that can supply two pivots 23 to pass on two spacing risers 6. The two limiting vertical plates 6 can limit the position of the paper on the paper conveying belt 2 in the left and right directions, so that the position of the paper is prevented from being deviated in the conveying process; and two spacing risers 6 and the preceding middle part of the section 221 that advances of annular belt constitute the paper storage tank, and operating personnel can place the paper that waits to print in the paper storage tank.

In this embodiment, the front edge of one vertical stopper 6 is located behind the front edge of the other vertical stopper 6. Like this, can form the paper feeding mouth in paper storage groove in spacing riser 6 front side, the paper storage groove is put into to operating personnel accessible paper feeding mouth paper that will wait to print, convenient operation.

The paper separating mechanism of this embodiment further includes two support wheel sets 7, and two support wheel sets 7 set up in the left and right sides of endless belt 22 side by side, and support wheel set 7 includes a plurality of supporting wheels 71 that arrange in proper order from front to back, and each supporting wheel 71 is all rotatable to be installed on a side that corresponding spacing riser 6 is close to endless belt 22. The two supporting wheel sets 7 are used for supporting the edges of the two sides of the paper on the endless belt 22, and the paper is prevented from falling off from one side of the endless belt 22, so that the paper is conveyed more stably by the paper conveying belt 2.

In the embodiment, the paper separating support 3 and the two limiting vertical plates 6 are both arranged on the machine base through the left-right adjusting mechanism 8; the left-right adjusting mechanism 8 comprises a plurality of second adjusting screws 81 and a plurality of second guide rods 82, each second guide rod 82 is installed on the machine base and moves left and right, each second adjusting screw 81 can be rotatably installed on the machine base and is parallel to the second guide rod 82, and one end of each second adjusting screw 81 is fixedly provided with a second adjusting wheel 811; the limiting vertical plate 6 is provided with a plurality of second guide holes 602 and a plurality of second screw holes 603, the paper separating support 3 is provided with a plurality of third guide holes 307 and a plurality of third screw holes 308, the third guide holes 307, the second guide holes 602 of the limiting vertical plate 6 and the second guide rods 82 are the same in number and are in one-to-one correspondence, the second guide rods 82 sequentially pass through the second guide holes 602 of one limiting vertical plate 6, the third guide holes 307 of the paper separating support 3 and the second guide holes 602 of the other limiting vertical plate 6, the third screw holes 308, the second screw holes 603 of the limiting vertical plate 6 and the second adjusting screws 81 are the same in number and are in one-to-one correspondence, and the second adjusting screws 81 sequentially pass through the second screw holes 603 of one limiting vertical plate 6, the third screw holes 308 of the paper separating support 3 and the second screw holes 603 of the other limiting vertical plate 6. The positions of the paper splitting support 3 and the two limiting vertical plates 6 in the left and right direction can be adjusted through the left and right adjusting mechanism 8 so as to adjust the positions of the lower end of the paper splitting knife 4 and the paper to be printed in the left and right direction and enable the positions to correspond to the positions of a printing head of the printing mechanism; during adjustment, the second adjusting wheel 811 is rotated to enable the second adjusting screw 81 to rotate in the forward direction or in the reverse direction, so as to drive the paper separating support 3 and the two limiting vertical plates 6 to move leftwards or rightwards for a certain distance along the second guide rod 82, and thus the positions of the lower end of the paper separating knife 4 and the paper to be printed in the left and right directions are adjusted.

The working principle of the paper separating mechanism of the single-sheet printer is briefly described as follows:

before paper feeding, the first adjusting wheel 531 can be rotated forward or backward according to the thickness value of the paper to be printed, so that the first adjusting screw 53 moves up or down along the first screw hole 303, the height positions of the first guide pillar 51 and the paper separating knife 4 are adjusted, and the size of the gap between the lower end of the paper separating knife 4 and the forward section 221 of the annular belt is equivalent to the thickness of the paper to be printed.

When paper is fed, a plurality of pieces of paper to be printed in a stacked state move from front to back under the drive of the paper conveying belt 2 (the two supporting wheel sets 7 are used for supporting the edges of two sides of the paper on the annular belt 22 and preventing the paper from falling from one side of the annular belt 22); when the paper to be printed reaches the front side of the paper separating support 3, the paper positioned above the bottom surface of the paper separating support 3 stops moving under the blocking of the front side of the paper separating support 3, and the paper positioned below the bottom surface of the paper separating support 3 passes through a paper conveying channel formed between the paper separating support 3 and the annular belt advancing section 221 under the driving of the paper conveying belt 2, so that the first separation of the paper is realized. Then, the paper entering the paper conveying channel is blocked by the second paper dividing inclined surface 32, so that the number of the paper entering the lower part of the paper dividing support 3 is gradually reduced, when the paper reaches the first paper dividing inclined surface 41 of the paper dividing knife 4 under the driving of the paper conveying belt 2, the number of the paper is gradually reduced under the blocking of the first paper dividing inclined surface 41 (at this time, the rest of the paper except the lowest paper stops moving under the blocking of the first paper dividing inclined surface 41 of the paper dividing knife 4), and the lowest paper passes through between the lower end of the paper dividing knife 4 and the forward section 221 of the annular belt to be separated from the rest of the paper, so that the second separation of the paper is realized, and only one paper fed into the printing mechanism is ensured.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a sheet-fed printer's branch paper mechanism, includes frame and paper conveyer belt, and paper conveyer belt installs on the frame, and paper conveyer belt has from preceding section of advancing to the back removal, its characterized in that: the paper separating mechanism further comprises a paper separating support, a paper separating cutter and a height adjusting mechanism capable of adjusting the height position of the paper separating cutter, the paper separating support is arranged right above the forward section of the paper conveying belt, a paper separating cutter mounting cavity is arranged on the lower portion of the paper separating support, the lower end opening of the paper separating cutter mounting cavity is formed in the bottom surface of the paper separating support, the height adjusting mechanism is installed on the paper separating support, the paper separating cutter is arranged in the paper separating cutter mounting cavity, the lower end of the paper separating cutter is exposed out of the middle area of the bottom of the paper separating support from the lower end opening of the paper separating cutter mounting cavity, and the lower end of the paper separating cutter is provided with a first paper separating inclined surface which gradually inclines downwards from front to back.

2. The sheet separation mechanism for a single sheet printer of claim 1, wherein: the paper separating support is provided with a first screw hole and a first guide hole which run up and down, the first screw hole, the first guide hole and the paper separating cutter installation cavity are sequentially communicated from top to bottom, the aperture of the first screw hole is larger than that of the first guide hole, and an annular limiting step is arranged between the lower end of the first screw hole and the upper end of the first guide hole; the height adjusting mechanism comprises a first guide pillar, a compression spring and a first adjusting screw rod, the upper part of the first guide pillar is positioned in a first screw hole, the middle part of the first guide pillar is positioned in a first guide hole, and the lower part of the first guide pillar is positioned in the paper separating cutter mounting cavity; the paper separating knife is arranged at the lower end of the first guide pillar; the upper end of the first guide pillar is provided with a limiting block, the compression spring is sleeved on the upper part of the first guide pillar and is positioned between the limiting block and the annular limiting step, the upper end of the compression spring is in close contact with the limiting block, and the lower end of the compression spring is in close contact with the annular limiting step; the first adjusting screw rod is positioned in the first screw hole and meshed with the first screw hole, and the lower end of the first adjusting screw rod is in contact fit with the limiting block.

3. The sheet separation mechanism for a single sheet printer of claim 2, wherein: a first adjusting wheel is fixedly arranged at the upper end of the first adjusting screw rod; the bottom of the front side face of the paper separating support is provided with a mounting opening, and a sealing plate is detachably mounted on the mounting opening.

4. The sheet separation mechanism for a sheet-fed printer as claimed in any one of claims 1 to 3, wherein: the front end of the bottom surface of the paper separating support is provided with a second paper separating inclined surface which is gradually inclined downwards from front to back; the back side of the bottom of the paper separating support is provided with a paper pressing block, and the bottom surface of the paper pressing block is flush with the bottom surface of the paper separating support.

5. The sheet separation mechanism for a sheet-fed printer as claimed in any one of claims 1 to 3, wherein: the paper conveying belt comprises a conveying motor, an annular belt, two rotating shafts and two driving belt wheels, the conveying motor is mounted on the base, the two rotating shafts can be rotatably mounted on the base and are arranged side by side in the front and back direction, one rotating shaft is in transmission connection with a power output shaft of the conveying motor, the two driving belt wheels are respectively mounted on the corresponding rotating shafts, the two driving belt wheels jointly tension the annular belt, and the annular belt is provided with a forward section moving from front to back and a return section below the forward section; the paper separating knife is arranged right above the driving belt wheel at the rear side.

6. The sheet separation mechanism for a single sheet printer of claim 5, wherein: the paper separating mechanism further comprises two limiting vertical plates which are arranged side by side on the left and right, and the paper separating support, the annular belt and the two driving belt wheels are arranged between the two limiting vertical plates.

7. The sheet separation mechanism for a single sheet printer of claim 6, wherein: the front side edge of one limiting vertical plate is positioned behind the front side edge of the other limiting vertical plate.

8. The sheet separation mechanism for a single sheet printer of claim 6, wherein: the paper separating mechanism further comprises two supporting wheel sets, the two supporting wheel sets are arranged on the left side and the right side of the annular belt side by side, each supporting wheel set comprises a plurality of supporting wheels which are sequentially arranged from front to back, and each supporting wheel can be rotatably installed on one side face, close to the annular belt, of the corresponding limiting vertical plate.

9. The sheet separation mechanism for a single sheet printer of claim 6, wherein: the paper separating support and the two limiting vertical plates are arranged on the base through a left-right adjusting mechanism; the left-right adjusting mechanism comprises at least one second adjusting screw rod and at least one second guide rod, the second guide rod is arranged on the base and moves left and right, and the second adjusting screw rod is rotatably arranged on the base and is parallel to the second guide rod; the paper separating support is provided with at least one second guide hole and at least one second screw hole, the paper separating support is provided with at least one third guide hole and at least one third screw hole, the third guide hole is formed in the position-limiting vertical plate, the second guide holes of the position-limiting vertical plate are identical to the second guide rods in number and in one-to-one correspondence, the second guide rods sequentially penetrate through the second guide holes of one position-limiting vertical plate, the third guide holes of the paper separating support and the second guide holes of the other position-limiting vertical plate, the third screw holes and the second screw holes of the position-limiting vertical plate are identical to the second adjusting screws in number and in one-to-one correspondence, and the second adjusting screws sequentially penetrate through the second screw holes of one position-limiting vertical plate, the third screw holes of the paper separating support and the second screw holes of the other position-limiting vertical plate.

10. The sheet separation mechanism for a single sheet printer of claim 9, wherein: and a second adjusting wheel is fixedly arranged at one end of the second adjusting screw rod.