CN216887406U

CN216887406U - Pinch roller conveying equipment

Info

Publication number: CN216887406U
Application number: CN202220533586.8U
Authority: CN
Inventors: 孟明雄; 韦天华
Original assignee: Liuzhou Zhuoxin Automation Equipment Co ltd
Current assignee: Liuzhou Zhuoxin Automation Equipment Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-05
Anticipated expiration: 2032-03-11

Abstract

The utility model discloses a pinch roller conveying device, which comprises: the feeding conveying mechanism is used for conveying materials; the lateral pressing mechanism comprises a lateral pressing belt and a lateral pressing wheel which are oppositely arranged and are used for being respectively contacted with two sides of the material, and the upper pressing mechanism comprises an upper pressing wheel which is used for being contacted with the upper side of the material. The utility model can reduce the problem of slipping of materials from stop to start.

Description

Pinch roller conveying equipment

Technical Field

The utility model relates to the technical field of packaging equipment. More particularly, the present invention relates to a pinch roller conveyor apparatus.

Background

The feeding and conveying mechanism at the front end of the household paper packing machine is used as the feeding mechanism at the front end of the packing machine, and the feeding speed of the feeding and conveying mechanism determines the packing quantity of the packing machine per minute. At present, due to the fact that the material intermittent feeding mode exists in the matching problem of the feeding device and the rear end material arranging device, the slipping problem between the material and the conveying belt exists when the material stops to move at the highest speed according to the mode that the material stops once, the feeding speed is directly influenced, and therefore the capacity of the tundish machine is influenced. Therefore, it is desirable to design a conveying mechanism capable of effectively reducing feed slippage.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a pinch roller conveyor apparatus that reduces the problem of material slippage from stop to start.

To achieve these objects and other advantages and in accordance with the purpose of the utility model, as embodied and broadly described herein, there is provided a pinch roller conveying apparatus, including: the feeding conveying mechanism is used for conveying materials; the lateral pressing mechanism comprises a lateral pressing belt and lateral pressing wheels which are arranged oppositely and used for being in contact with two sides of the material respectively, and the upper pressing mechanism comprises an upper pressing wheel used for being in contact with the upper side of the material.

The side pressure mechanism further comprises a pressure feeding power wheel, a pressure feeding front wheel, a pressure feeding direction-changing wheel and a pressure feeding tension wheel, and the side pressure feeding belt is sleeved on the pressure feeding power wheel, the pressure feeding front wheel, the pressure feeding direction-changing wheel and the pressure feeding tension wheel.

Further, the side pressing mechanism further comprises a side pressing wheel strip, a plurality of side pressing wheels are arranged on the side pressing wheel strip side by side, and the side pressing wheels are rotatably arranged.

Further, the side pressure mechanism still includes pressure spoke fixed plate, width modulation board, slider, guide arm and pressure spring, the width modulation board is located pressure spoke fixed plate top, both sides are equipped with preceding vertical flange and the vertical flange in back respectively around the width modulation board, the slider bottom sets up pressure spoke fixed plate surface, and be located preceding vertical flange with between the vertical flange in back, the guide arm passes by preceding to back in proper order preceding vertical flange, slider and the vertical flange in back, the guide arm front end with the side pressure spoke is connected, the guide arm rear end is provided with the separation blade, is used for blockking the vertical flange in back, pressure spring one end with the contact of side pressure spoke, the other end with preceding vertical flange contact.

Furthermore, the pressure wheel strip fixing plate is provided with a locking hole, and the width adjusting groove is arranged at a corresponding position on the width adjusting plate.

Furthermore, the upper pressing mechanism further comprises an upper pressing spoke, a plurality of upper pressing wheels are arranged on the upper pressing spoke side by side, and the upper pressing wheels are rotatably arranged.

Furthermore, go up pressure mechanism still includes support column, hoist and mount crossbeam, balancing weight, the support column upper end is connected the hoist and mount crossbeam, it is in to go up the pinch roller strip setting on the hoist and mount crossbeam, the balancing weight setting is in go up the pinch roller strip on.

Furthermore, go up pressure mechanism still includes hoist and mount board, hoisting screw and blocks the circle, the hoist and mount board sets up on the hoist and mount crossbeam, hoisting screw one end with go up the pinch roller strip and be connected, the other end passes the balancing weight with the hoist and mount board, it establishes to block that the movable cover of retaining ring is in on the other end of hoisting screw.

Further, feed conveying mechanism includes feed conveyer belt base member, supports the supporting legs of feed conveyer belt base member, setting are in the initiative gyro wheel, the drive of feed conveying mechanism end initiative gyro wheel pivoted gear motor, to the material about the side carry out the guardrail that leads and support the guardrail bracing piece, the guardrail seat of guardrail.

Furthermore, the feeding conveying mechanism is a pure linear type conveying belt or a turning type flexible chain conveying belt, the pure linear type conveying belt is sleeved on the driving roller surface, a plane flat belt or a conveying net chain is adopted as the pure linear type conveying belt, and the turning type flexible chain conveying belt is a conveying net chain.

The utility model at least comprises the following beneficial effects:

the feeding and conveying mechanism at the front end of the tundish machine comprises a side pressing mechanism or an upper pressing mechanism, wherein the side pressing mechanism adds a horizontal clamping force to the material in the horizontal direction in a side pressing mode to increase the friction force to the material and actively accelerate the conveying forward, and the upper pressing mechanism increases the friction force of the material to a conveying belt by adding a downward pressure to the material above the material.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic view of the whole connecting line of the pinch roller conveying equipment with a lateral pressing mechanism of the pinch roller conveying equipment;

FIG. 2 is a first schematic perspective view of a pinch roller conveying device with an independent power side pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 3 is a schematic perspective view of a second embodiment of the present invention, which is a pinch roller conveying device with an independent power lateral pressing mechanism;

FIG. 4 is a schematic perspective view of an independent power side-pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 5 is a schematic perspective view of the main components of the independent power side pressing mechanism of the pinch roller conveying device of the present invention;

FIG. 6 is a schematic top view of the main components of the independent power side pressing mechanism of the pinch roller conveying device of the present invention;

FIG. 7 is a schematic front view of a pinch roller conveying device with an independent power side pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 8 is a schematic top view of a roller conveyor with an independent power side pressing mechanism according to the present invention;

FIG. 9 is a schematic perspective view of the main components of the pinch roller conveying device with a common power side pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 10 is a schematic perspective view of a pinch roller conveyor with a common power side pressing mechanism according to the present invention;

FIG. 11 is a schematic top view of the main components of the pinch roller conveying device with a common power side pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 12 is a schematic view of the whole connecting line of the pinch roller conveying device with the belt pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 13 is a first schematic perspective view of a pinch roller conveying device with an upper pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 14 is a second schematic perspective view of a pinch roller conveyor with an upper pressing mechanism of the pinch roller conveyor according to the present invention;

FIG. 15 is a first perspective view of a pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 16 is a second perspective view of a pressing mechanism of the pinch roller conveying device according to the present invention;

FIG. 17 is a schematic front view of a pinch roller conveyor with an upper pressing mechanism of the pinch roller conveyor according to the present invention;

FIG. 18 is a schematic top view of a pinch roller conveyor with an upper pressing mechanism of the pinch roller conveyor according to the present invention;

101-a material arranging mechanism; 200-a lateral pressing mechanism; 300-a pressing mechanism; 110. 111-supporting feet; 120. 121-guardrail support bars; 130. 131-a guardrail base; 140. 141, 142, 143-guard bar; 150-feed conveyor belt base; 160-a reduction motor; 170-active roller; 171-motor end of active roller shaft; 172-drive roller shaft drive end; 180-feed conveyor belt (or feed conveyor network chain); 190. 191-material; 210-a force-feed motor; 211-a reducer; 213-pressure power transmission wheel; 214-side pressing belt; 220-pressure feeding connecting plates; 221-belt top plate; 222-pressure feed backing plate; 223. 2231-pressure-feeding the substrate; 2232-pressure feeding substrate trough; 224-press-feeding the tension wheel shaft; 225-pressure feeding tension wheel; 226-pressure feeding the front axle; 227-pressure feeding front wheels; 228-pressure feeding the direction-changing wheel shaft; 229-pressing and conveying the turning wheel; 230-side pressing of the spoke; 2301-side pinch roller; a 2302-side open guide; 240. 241-pressure spring; 250. 251-a slider; 260. 261-a guide rod; 262. 263-blocking piece; 264. 265-screw; 270-a width modulation plate; 2701-rear vertical rib; 2702-front vertical rib; 2703. 2704, 2705, 2706-guide bar avoidance holes; 2707-width-modulated slots; 280-pinch roller strip fixing plates; 2801-locking holes; 310-pressing the wheel strip upwards; 311-upper opening guide part; 312-upper pinch roller; 320. 321-a stop ring; 330. 331-hoisting screws; 340-hoisting the beam; 350-support column; 360-hoisting the plate; 370-a counterweight block; a-side pressure conveying space; b-upper pressure feeding space; 410-a drive gear; 420-a driven gear; 430-a transmission shaft; 440. 441-bearing.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in FIGS. 1-18, embodiments of the present application provide a pinch roller conveying apparatus, comprising: the feeding conveying mechanism is used for conveying

materials

190 and 191, and is suitable for the existing feeding conveying belt, feeding conveying net chain or similar mechanisms; the side pressing mechanism 200 or the upper pressing mechanism 300, the side pressing mechanism 200 comprises a side pressing belt 214 and a side pressing wheel 2301 which are oppositely arranged and are used for being respectively contacted with two sides of the

materials

190 and 191, and the upper pressing mechanism 300 comprises an upper pressing wheel 312 which is used for being contacted with the upper sides of the

materials

190 and 191; the side pressure mechanism 200 and the upper pressure mechanism 300 select one or both of them, the side pressure mechanism 200 generates friction force by the side pressure of the side pressure conveying belt and the side pressure wheel 2301 contacting the

materials

190, 191, the side pressure conveying belt 214 has power, and the side pressure wheel can adopt a non-power or power mode; the upper pressing mechanism 300 utilizes an upper pressing wheel to contact the upper sides of the

materials

190 and 191, and can adopt an unpowered or powered mode; it can be seen that the feeding and conveying mechanism at the front end of the packing machine in the embodiment comprises a side pressing mechanism 200 or an upper pressing mechanism 300, the side pressing mechanism 200 adds horizontal clamping force to the

materials

190 and 191 in the horizontal direction in a side pressing mode to increase the friction force to the

materials

190 and 191 and actively accelerate the forward conveying, and the upper pressing mechanism 300 increases the friction force of the

materials

190 and 191 to the conveying belt by increasing the downward pressure to the

materials

190 and 191 above the

materials

190 and 191, so that the problem of slippage of the

materials

190 and 191 from stopping to starting can be reduced.

In other embodiments, referring to fig. 5 to 6, an installation mode of the side pressure feeding belt 214 is provided, the side pressure mechanism 200 further comprises a pressure feeding power wheel 213, a pressure feeding front wheel 227, a pressure feeding direction changing wheel 229 and a pressure feeding tension wheel 225, and the side pressure feeding belt 214 is sleeved on the pressure feeding power wheel 213, the pressure feeding front wheel 227, the pressure feeding direction changing wheel 229 and the pressure feeding tension wheel 225.

In other embodiments, referring to fig. 5 to 6, an arrangement of the side pressing wheels is provided, the side pressing mechanism 200 further includes a side pressing wheel strip 230, a plurality of side pressing wheels 2301 are arranged on the side pressing wheel strip 230 side by side, and the side pressing wheels 2301 are rotatably arranged; optionally, the front end of the side pressing wheel strip 230 is provided with a side opening guide 2302 part to smoothly realize the material entering the side pressing mechanism 200.

In other embodiments, the side pressing mechanism 200 further includes a pressing wheel strip fixing plate 280, a width adjusting plate 270,

sliders

250, 251,

guide rods

260, 261 and

compression springs

240, 241, the width adjusting plate 270 is located above the pressing wheel strip fixing plate 280, front and rear sides of the width adjusting plate 270 are respectively provided with a front vertical rib 2702 and a rear vertical rib 2701, bottoms of the

sliders

250, 251 are arranged on the surface of the pressing wheel strip fixing plate 280 and located between the front vertical rib 2702 and the rear vertical rib 2701, the

guide rods

260, 261 sequentially penetrate through the front vertical rib 2702, the

sliders

250, 251 and the rear vertical rib 2701 from front to rear, front ends of the

guide rods

260, 261 are connected with the side pressing wheel strips 230, rear ends of the

guide rods

260, 261 are provided with

stoppers

262, 263 for blocking the rear vertical rib 2701, one end of the

compression springs

240, 241 is in contact with the side pressing wheel strips 230, the other end is in contact with the front vertical rib 2702; optionally, the pressure wheel strip fixing plate 280 is provided with a locking hole 2801, and the width adjustment plate 270 is provided with a width adjustment groove 2707 at a corresponding position;

specifically, the side pressing mechanism 200 includes: a compression feed motor 210 for providing side compression power, a speed reducer 211 or a driving gear 410 for indirect transmission, a driven gear 420, a transmission shaft 430 and bearings 440 and 441; a pressure-feed power wheel 213 mounted on the output shaft of the speed reducer 211 or a pressure-feed power wheel 213 mounted on the transmission shaft 430; a press-feed connection plate 220, a press-feed back plate 222, and press-feed base plates 223, 2231 for providing mounting support; the side pressing belt 214 for driving the materials 190 and 191 to accelerate and convey forwards; a pressure feed tension pulley shaft 224 and a pressure feed tension pulley 225 for pressing the side feed belt 214; a belt top plate 221 for holding the side pressing belt 214 in a flat shape; a pressure feed front wheel shaft 226, a pressure feed front wheel 227, a pressure feed direction-changing wheel shaft 228, and a pressure feed direction-changing wheel 229 for guiding the side pressure feed belt 214; a pinch roller bar fixing plate 280 for supporting; a width adjusting plate 270 for adjusting the horizontal width of the side pressure feeding space a; the guide sliders 250 and 251; guide rods 260 and 261 of floating support, and pressure springs 240 and 241; limiting stoppers 262 and 263 and screws 264 and 265; a lateral pressure wheel strip 230 for lateral pressure of the materials 190 and 191;

the side pressing belt 214 of the side pressing mechanism 200 is consistent in height with the side pressing wheel strip 230, the effect is optimal, a drop is permitted, and the effect is not ideal; the pressure-feed power wheel 213 is mounted on the output shaft of the speed reducer 211, the speed reducer 211 is driven by the pressure-feed motor 210, so that the pressure-feed power wheel 213 is indirectly driven and rotated by the pressure-feed motor 210, and the speed reducer 211 is fixed on the pressure-feed substrate; the driving gear 410 is coaxially installed on the shaft transmission end of the driving roller 170, the driven gear 420 is installed at the lower end of the transmission shaft 430, the pressure feeding power wheel 213 is coaxially installed at the upper end of the transmission shaft 430, the bearings 440 and 441 are coaxially arranged at two sides of the pressure feeding power wheel 213, the outer rings of the bearings 440 and 441 are fixed with the pressure feeding base plate, the pressure feeding power wheel 213, the transmission shaft 430 and the driven gear 420 form a rigid whole body which can freely rotate, the driven gear 420 and the driving gear 410 are mutually engaged and matched for transmission, and the power of the speed reduction motor 160 is transmitted to the pressure feeding power wheel 213 through the shaft motor end of the driving roller 170, the shaft transmission end of the driving roller 170, the driving gear 410, the driven gear 420 and the transmission shaft 430 so as to rotate to achieve the purpose of transmitting power;

the side pressure feed belt is sleeved on the pressure feed power wheel 213, the pressure feed front wheel 227, the pressure feed direction-changing wheel 229 and the pressure feed tension wheel 225, the pressure feed tension wheel 225 can rotate around the pressure feed tension wheel shaft 224, the pressure feed base plates 223 and 2231 are provided with pressure feed base plate grooves 2232, the pressure feed tension wheel 225 and the pressure feed tension wheel shaft 224 move in the pressure feed base plate grooves 2232 to tension the side pressure feed belt 214, and the belt top plate 221 supports the side pressure feed belt 214 to prevent the side pressure feed belt 214 from collapsing; the side pressure wheel strips 230 are provided with a plurality of side pressure wheels 2301 which can rotate freely so as to increase the side pressure of the materials 190 and 191 and reduce the resistance of the side pressure wheel strips 230 to the materials 190 and 191; the side pressure wheel strips 230 adopt a floating type elastic side pressure supporting structure, can be adaptive to the situation of different material widths, and adjust the compression amount of the pressure springs 240 and 241 to control the side pressure of the side pressure wheel strips 230 on the materials 190 and 191; the sliding blocks 250 and 251 are fixed on the pressing wheel strip fixing plate 280, the width adjusting plate 270 is provided with two vertical flanges, namely a rear vertical flange 2701 and a front vertical flange 2702, guide rod avoiding holes 2703, 2704, 2705 and 2706 are arranged on the rear vertical flange 2701 and the front vertical flange 2702 so as to penetrate through the guide rods 260 and 261 without contact, one ends of the pressure springs 240 and 241 are in contact with the side pressing wheel strips 230 while the other ends are in contact with the front vertical flange 2702, one ends of the guide rods 260 and 261 are connected with the other ends of the side pressing wheel strips 230 and are fixed with the blocking pieces 262 and 263 and the screws 264 and 265, the pressure springs 240 and 241 and the guide rods 260 and 261 can be coaxially mounted or mounted in different axes, after the pressure springs 240 and 241 exert pre-pressure, the blocking pieces 262 and 263 naturally adhere to the rear vertical flange 2701 so as to maintain the pre-pressure of the pressure springs 240 and 241 constant, and when the horizontal width of the side pressing space a is adjusted, when the position of the widening plate 270 is moved, the side pressure rollers 230, the pressure springs 240 and 241, the guide rods 260 and 261, the stoppers 262 and 263, and the screws 264 and 265 move together with the widening plate 270 while keeping the pre-pressure of the pressure springs 240 and 241 unchanged, and after moving to the right position, the widening plate 270 is fixed again through the locking holes 2801 formed in the pressure roller fixing plate 280 and the widening grooves 2707 formed in the widening plate 270.

In other embodiments, referring to fig. 15 to 16, an arrangement of upper pressing wheels is provided, the upper pressing mechanism 300 further includes an upper pressing wheel bar 310, a plurality of upper pressing wheels 312 are arranged on the upper pressing wheel bar 310 side by side, and the upper pressing wheels 312 are rotatably arranged; optionally, an upward opening guide 311 is provided to facilitate the material entering the lateral pressing mechanism.

In other embodiments, referring to fig. 15 to 16, a setting manner of an upper pressing wheel is provided, the upper pressing mechanism 300 further includes a supporting column 350, a hoisting beam 340, and a weight block 370, an upper end of the supporting column 350 is connected to the hoisting beam 340, the upper pressing wheel strip 310 is arranged on the hoisting beam 340, and the weight block 370 is arranged on the upper pressing wheel strip 310; optionally, the pressing mechanism 300 further includes a hoisting plate 360, hoisting

screws

330, 331 and blocking

rings

320, 321, the hoisting plate 360 is disposed on the hoisting cross beam 340, one end of each hoisting

screw

330, 331 is connected to the upper pressing roller strip 310, the other end passes through the counterweight 370 and the hoisting plate 360, and the blocking rings 320, 321 are movably sleeved on the other end of each hoisting

screw

330, 331;

specifically, the pressing mechanism 300 includes: a supporting column 350, a hoisting beam 340 and a hoisting plate 360 for providing support; an upper pinch roller 310 for pressing the upper surfaces of the materials 190 and 191; hoisting screws 330, 331 for hoisting the upper pinch roller strip 310; the check rings 320 and 321 are used for adjusting the hoisting height of the upper pinch roller strip 310; a balancing weight 370 for increasing the gravity of the upper pressing wheel strip 310 to press the materials 190 and 191; the lower end of a supporting column 350 of the upper pressing mechanism 300 is fixed on the feeding conveyor belt base 150, the top end of the supporting column 350 is fixed with the hoisting beam 340, the hoisting plate 360 is fixed on the hoisting beam 340, the hoisting screws 330 and 331 are fixed on the upper pressure roller 310, the hoisting screws 330 and 331 are sleeved with the movable check rings 320 and 321, the height position of the upper pressure roller 310 can be adjusted by moving the check rings 320 and 321 relative to the hoisting screws 330 and 331, the hoisting screws 330 and 331 penetrate through the hoisting plate 360, the hoisting screws 330 and 331 penetrate through the counterweight 370, when the materials 190 and 191 reach the upper pressing space B, the upper pressure roller 310, the hoisting screws 330 and 331, the check rings 320, 321 and the counterweight 370 are supported by the top surfaces of the materials 190 and 191 to move upwards by a small distance, so that the self gravity of the upper pinch roller strip 310, the hoisting screws 330 and 331, the blocking rings 320 and 321 and the counterweight 370 is completely applied to the materials 190 and 191 to increase the vertical downward pressure on the materials 190 and 191, thereby achieving the purpose of increasing the friction force between the materials 190 and 191 and the feeding conveyer belt (or the feeding conveyer chain), and after the materials 190 and 191 leave the upper pressure feeding space B, the upper pinch roller strip 310, the hoisting screws 330 and 331, the blocking rings 320 and 321 and the counterweight 370 automatically move downwards to the bottom surfaces of the blocking rings 320 and 321 to collide with the top surface of the hoisting plate 360 and then stop; the upper pressing mechanism 300 has a supporting and hoisting structure, and the parts of the upper pressing mechanism 300 used for pressing the materials 190 and 191 can be pressed upwards by gravity or increased by spring force and gravity.

In other embodiments, the feed conveying mechanism includes a feed conveyor belt base 150, support

legs

110, 111 for supporting the feed conveyor belt base 150, a driving roller 170 disposed at an end of the feed conveying mechanism, a reduction motor 160 for driving the driving roller 170 to rotate,

guard rails

140, 141, 142, 143 for guiding left and right sides of the

materials

190, 191, and guard rail support bars 120, 121 for supporting the guard rails,

guard rail seats

130, 131, 171-a driving roller shaft motor end 171 and a driving roller shaft transmission end 172 engaged with the driving roller 170, and the pressure feed connection plate and the pressure roller fixing plate are fixed on the feed conveyor belt base 150.

In other embodiments, the feeding and conveying mechanism is a pure linear conveyor belt or a turning flexible chain conveyor belt (feeding conveyor belt 180), and is sleeved on the surface of the driving roller 170, the pure linear conveyor belt adopts a flat plane belt or a conveying network chain, and the turning flexible chain conveyor belt adopts a conveying network chain; this embodiment provides alternative types of feed conveyor mechanisms, but is not only applicable to these types.

In other embodiments, the material arranging mechanism 101 is arranged at the material outlet end of the pinch roller conveying equipment in a bearing mode, the material arranging mechanism 101 arranges materials into a single-row multi-column mode, a double-row multi-column mode, a multi-row multi-column mode or a material arranging mechanism converts the motion direction of a single material into a vertical or nearly vertical transverse motion direction.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the present puck transport device will be apparent to those skilled in the art.

While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. Pinch roller conveying equipment, its characterized in that includes:

the feeding conveying mechanism is used for conveying materials;

the lateral pressing mechanism comprises a lateral pressing belt and lateral pressing wheels which are arranged oppositely and used for being in contact with two sides of the material respectively, and the upper pressing mechanism comprises an upper pressing wheel used for being in contact with the upper side of the material.

2. The pinch roller conveyor apparatus of claim 1, wherein the side pressure mechanism further comprises a pressure-feed power wheel, a pressure-feed front wheel, a pressure-feed direction-changing wheel, and a pressure-feed tension wheel, and the side pressure-feed belt is sleeved on the pressure-feed power wheel, the pressure-feed front wheel, the pressure-feed direction-changing wheel, and the pressure-feed tension wheel.

3. The pinch roller conveyor apparatus of claim 1 wherein said side press further comprises a side press bar having a plurality of said side press rollers disposed side-by-side on said side press bar, said side press rollers being rotatably disposed.

4. The pinch roller conveying device according to claim 3, wherein the lateral pressing mechanism further comprises a pinch roller strip fixing plate, a width adjusting plate, a sliding block, a guide rod and a pressure spring, the width adjusting plate is positioned above the pinch roller strip fixing plate, a front vertical rib and a rear vertical rib are respectively arranged on the front side and the rear side of the width adjusting plate, the bottom of the sliding block is arranged on the surface of the pinch roller strip fixing plate and is positioned between the front vertical rib and the rear vertical rib, the guide rod sequentially penetrates through the front vertical rib, the sliding block and the rear vertical rib from front to back, the front end of the guide rod is connected with the lateral pressing roller strip, the rear end of the guide rod is provided with a blocking piece for blocking the rear vertical rib, one end of the pressure spring is in contact with the lateral pressing roller strip, and the other end of the pressure spring is in contact with the front vertical rib.

5. The pinch roller conveyor as claimed in claim 4, wherein the pinch roller strip fixing plate is provided with locking holes, and the width-adjusting plate is provided with width-adjusting grooves at corresponding positions.

6. The pinch roller conveyor apparatus of claim 1 wherein said upper press mechanism further comprises an upper press roller bar having a plurality of said upper press rollers disposed side-by-side thereon, said upper press rollers being rotatably disposed.

7. The pinch roller conveying device according to claim 6, wherein the pressing mechanism further comprises a supporting column, a hoisting beam and a balancing weight, the hoisting beam is connected to the upper end of the supporting column, the pressing roller strip is arranged on the hoisting beam, and the balancing weight is arranged on the pressing roller strip.

8. The pinch roller conveying device according to claim 7, wherein the pressing mechanism further comprises a hoisting plate, hoisting screws and a blocking ring, the hoisting plate is arranged on the hoisting cross beam, one end of each hoisting screw is connected with the upper pinch roller strip, the other end of each hoisting screw penetrates through the balancing weight and the hoisting plate, and the blocking ring is movably sleeved on the other end of each hoisting screw.

9. The pinch roller conveyor device according to claim 1, wherein the feed conveyor mechanism comprises a feed conveyor belt base body, support legs for supporting the feed conveyor belt base body, driving rollers arranged at the ends of the feed conveyor mechanism, a speed reduction motor for driving the driving rollers to rotate, guardrails for guiding the left and right sides of the material, and guardrail support rods and guardrail seats for supporting the guardrails.

10. The pinch roller conveyor apparatus of claim 9 wherein the feed conveyor mechanism is a straight conveyor belt or a curved flexible chain conveyor belt, and is mounted on the drive roller surface, the straight conveyor belt being a flat belt or a mesh conveyor chain, and the curved flexible chain conveyor belt being a mesh conveyor chain.