CN210791315U

CN210791315U - Multi-blade saw

Info

Publication number: CN210791315U
Application number: CN201921512732.3U
Authority: CN
Inventors: 闻峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-06-19
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a multi-disc saw, including the frame, the frame front side is equipped with the processing platform, and processing platform middle part is equipped with the saw bit, is equipped with a plurality of nip rolls in processing bench side, and nip roll is equipped with presses the material roller, press material roller front end level to hang in processing bench side, press the material roller end to rotate with the frame through the connecting piece and be connected, press the material roller can the up-and-down motion for the processing platform, the position that is close to the front end on the connecting piece is equipped with elastic closing device. The utility model discloses the mode stability of holding that the compression roller unilateral is fixed can effectively be guaranteed to compression roller's closing device, moreover, the utility model discloses when using the multi-disc saw, because simple structure just is the unilateral setting, so more conveniently separate compression roller and closing device with baffle isotructure, make this one side of processing platform when the cutting operation, the saw-dust can not cause the pollution to other structures of closing device and multi-disc saw.

Description

Multi-blade saw

Technical Field

The utility model relates to a wood working equipment, in particular to multi-blade saw.

Background

The wood beam is commonly called as square wood, and the wood is sawed into square bars with certain specification and shape according to the actual processing requirements, and the wood bars with rectangular or square sections are mainly processed from pine, basswood, fir and other trees. It is generally used for decoration and door and window materials, template support and roof truss materials in structural construction, or can be used for various wooden furniture.

In the prior art, a multi-blade saw, also called a multi-edge saw, is generally used for cutting, and is mainly used for cutting through a plurality of circular saw blades which are arranged side by side and coaxially rotate and have the same size, and a wood board or wood is cut into a plurality of square wood strips through a saw blade.

When the saw blade cuts the wood board, the wood board is easy to tilt under the action of the saw blade, and the wood board needs to be pushed to move forwards. Therefore, a material pressing roller arranged above the processing table and a material feeding roller embedded in the processing table are usually arranged on two sides of the saw blade, and the wood plate is prevented from tilting and can be stably conveyed during cutting through clamping of the material pressing roller and the material feeding roller.

The wood is not neat and uniform in curvature, surface flatness and thickness, so that the acting force of the pressure roll on the wood during working can be too tight or too loose, indentation can be generated due to too tight force, and the force can be mutually and also can be reflected to the equipment of the multi-blade saw. Too loose, the situation that the plate is scattered when being fed in the cutting process can be caused, and the cut plate is completely not qualified.

In order to solve the problem, the utility model patent of publication No. CN206254275U discloses a pressing device for a plate double-shaft multi-blade saw, which comprises a pressing bracket arranged above a multi-blade saw worktable, two parallel front pressing shafts are arranged at the front end of the pressing bracket, two parallel rear pressing shafts are arranged at the rear end of the pressing bracket, two ends of each front pressing shaft and two ends of each rear pressing shaft are respectively arranged on the pressing bracket through a sliding bearing, a slide way is respectively arranged on the pressing bracket at two sides of each sliding bearing, two sides of each sliding bearing are respectively movably clamped on the corresponding slide way, an adjusting rod with external threads is respectively arranged at the top of each sliding bearing, the bottom end of the adjusting rod is fixedly connected with the top of the sliding bearing, the top end of the adjusting rod passes through an upper baffle plate of the pressing bracket and extends to the upper part of the upper baffle plate, a locking nut is sleeved on the adjusting rod above the upper baffle plate, the adjusting rod between the sliding bearing and the upper baffle is sleeved with a compression spring, each front compression shaft is provided with a front compression wheel, each rear compression shaft is provided with a rear compression wheel, one end of one front compression shaft is connected with a first motor through a first chain transmission mechanism, the two front compression shafts are connected through a second chain transmission mechanism, one end of one rear compression shaft is connected with a second motor through a third chain transmission mechanism, and the two rear compression shafts are connected through a fourth chain transmission mechanism.

At present, the structure of the multi-blade saw commonly seen in the prior art is the same as or similar to that of the multi-blade saw disclosed in the utility model, but the structure of the multi-blade saw is complex and the manufacturing cost is high. When the device is used, the pressing device cannot be isolated from the processing table by using devices such as a protection device or a partition plate due to the structural defects of the device, so that dust such as sawdust generated by cutting can enter the structure of the pressing device, and the pressing effect of the pressing device is poor after the pressing device is used for a long time.

There is a need for an improved hold down device of the prior art that is configured to facilitate spacing the hold down device from the table during manufacture and use of the multi-blade saw.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a multi-blade saw, the closing device simple structure of nip roll compresses tightly effectually, when using, can set up the baffle and separate closing device and processing platform on multi-blade saw, makes closing device not polluted by the saw-dust.

The utility model discloses a following technical scheme realizes:

the multi-blade saw comprises a frame, wherein a processing table is arranged on the front side of the frame, a saw blade is arranged in the middle of the processing table, a plurality of pressure rollers are arranged above the processing table and provided with pressure roller shafts, the front ends of the pressure roller shafts are horizontally suspended above the processing table, the tail ends of the pressure roller shafts are rotatably connected with the frame through connecting pieces, the pressure roller shafts can move up and down relative to the processing table, and elastic pressing devices are arranged on the connecting pieces close to the front ends.

The connecting piece is rectangular plate-shaped, the material pressing roller shaft is connected to the lower surface of the front end of the connecting piece through a bearing seat, the tail end of the connecting piece is rotatably connected with the rack, and the connecting piece rotates in the vertical direction.

The pressing device is arranged on the side, close to the nip roll, of the connecting piece.

The pressing device comprises a compression spring sleeved on a straight rod, the bottom of the straight rod is rotatably connected with a connecting piece, the top of the straight rod penetrates out of the top of the rack, the compression spring is arranged below the rack, a limiting bulge for limiting the downward movement of the compression spring is arranged at the position, located at the bottom of the compression spring, on the straight rod, the top of the compression spring is abutted to the lower surface of the rack, and a nut in threaded fit is arranged at the top, located above the rack, of the straight rod.

The material pressing rollers are symmetrically arranged on two sides of the saw blade, the axial leads of the material pressing roller shafts are on the same horizontal plane, and the connecting pieces located on the same side are arranged in an up-down stacked mode.

The tail ends of the connecting pieces on the same side are arranged in the same vertical plane at equal intervals from top to bottom.

The width of the part of the front end of the connecting piece, which is provided with the bearing seat, is larger than the width of other parts, and the part of the front end of the connecting piece, which is provided with the elastic pressing device, protrudes outwards.

The tail ends of the pressing roll shafts are provided with a pair of pressing gears which rotate coaxially and have the same diameter, the pressing gears which are positioned on the same side of the saw blade are in transmission connection in the same direction through a plurality of chains, the pressing gears on the two sides are in transmission connection with an output shaft of the speed reducer through the chains, and the transmission directions of the pressing gears on the two sides of the saw blade are consistent.

The number of the pressure rolls on two sides of the saw blade is three, the feeding rolls are arranged right below the two pressure rolls which are far away from the two sides of the saw blade and embedded in the processing table, and the height of the horizontal plane on which the top of each feeding roll is located is larger than that of the horizontal plane on which the upper surface of the processing table is located; two ends of a feeding roll shaft of the feeding roll are fixed on the rack through bearing seats, one end of the feeding roll shaft, which is positioned on the inner side of the rack, is provided with a pair of feeding gears which rotate coaxially and have the same diameter, and the rotation direction of the feeding gears is opposite to that of the pressing gears.

The material pressing gear and the material feeding gear which are positioned on the same side of the saw blade are respectively in link transmission through a turning gear set, and the turning gear set is fixed on the rack through a turning gear shaft.

The utility model has the advantages that:

compared with the prior art, the utility model discloses a novel structure of multi-disc saw, especially the closing device of nip roll can effectively guarantee the mode stability of holding that the nip roll unilateral is fixed, moreover, the utility model discloses when using multi-disc saw, because simple structure just is the unilateral setting, so more conveniently separate nip roll and closing device with baffle isotructure, make this one side of processing platform when the cutting operation, the saw-dust can not cause the pollution to other structures of closing device and multi-disc saw.

Drawings

FIG. 1 is a front view of the multi-blade saw of the present invention;

FIG. 2 is a rear view of the multi-blade saw structure of the present invention;

FIG. 3 is a schematic top view of the multi-blade saw structure of the present invention;

FIG. 4 is a schematic view of the pressing device of the multi-blade saw of the present invention;

fig. 5 is a schematic view of the transmission part of the present invention.

Detailed Description

As shown in figure 1, the utility model discloses a

frame

1, 1 front sides of frame are equipped with processing platform 2, and processing platform 2 is used for processing platform 2 middle part to be equipped with saw bit 3, is equipped with a plurality of nip rolls 4 above processing platform 2. The processing table 2 is used for placing wood, the saw blade 3 is used for cutting the wood, the saw blade 3 is composed of a plurality of coaxial rotating equal-diameter circular saw blades, the circular saw blades are arranged at equal intervals, the distance between every two adjacent saw blades is adjusted, and the wood can be cut into battens with required specifications.

When cutting, the wood is pushed from one end of the processing table 2 to the other end, passes through the saw blade 3, and is cut into desired wood pieces. In the prior art, the material pressing rollers 4 are symmetrically distributed on two sides of the saw blade 3, and are used for conveying wood and preventing the wood from being driven by the saw blade to tilt or change positions during cutting in the conveying process.

The nip roll 4 is provided with a nip roll shaft 40, in the embodiment, the front end of the nip roll shaft 40 is horizontally suspended above the processing table 2, the nip roll shaft 40 is in a cantilever shape, and the tail end thereof is rotatably connected with the frame 1 through a connecting piece 41.

Specifically, as shown in fig. 2, the end of the connecting member 41 is provided with a rotating shaft 44, and the connecting member 41 is rotatably connected to the frame 1 through the rotating shaft 44, so that the connecting member 41 vertically rotates around the rotating shaft 44. The pressing roller shaft 40 is connected to a lower surface of a front end of the connecting member 41 through a bearing housing 42, and the connecting member 41 carries the pressing roller shaft 40 at the front end thereof to move up and down with respect to the processing table 2. Although the pressing roller shaft 40 rotates in an arc shape, the movement track is similar to the up-and-down displacement under the condition of small movement amplitude, so the effect is consistent with the moving path of the front pressing shaft or the rear pressing shaft in the vertical pressing device in the prior art.

As shown in FIG. 1, the material pressing rolls 4 are symmetrically arranged at both sides of the

saw blade

3, 3 material pressing rolls 4 are arranged at each side, and the axial leads of the material pressing roll shafts 40 are on the same horizontal plane.

The utility model discloses a press material roller 40 of pressure feed roll 4 is that only one end rotates fixedly, and the other end is unsettled, in order to fix steadily below the front end of connecting piece 41 press material roller 40, bearing frame 42 is two at least, and bearing frame 42's distance is big more, and the messenger is located the length that the partial length of pressing material roller 40 between bearing frame 42 is big more than the length that is located the material roller 40 of pressing of processing platform 2 tops, and the steadiness is just better.

Therefore, in the present embodiment, the connecting member 41 has a rectangular plate shape, and as shown in fig. 4, the bearing seats 42 are distributed on both sides of the lower surface of the front end of the connecting member 41.

In order to ensure the normal movement of the connecting member 41, the connecting member 41 is disposed obliquely, and the axes of the nip rolls 4 on the same side are on the same horizontal plane, so that the connecting members 41 on the same side are stacked up and down. In the present embodiment, the ends of the connecting members 41 on the same side are arranged in the same vertical plane at equal distances from top to bottom, i.e. the axes of the rotating shafts 44 are in the same vertical plane. Referring to fig. 2 and 4, the rotating shaft 44 is fixed to the frame 1 at both sides of the end of the connecting member 41 through a bearing block 45.

As in the prior art, the force of the nip roller 4 pressing down is derived from the elastic pressing device 5 provided on the connecting member 41 near the front end.

The utility model discloses nip roll 4 sets up this one end of hanging on processing platform 2 at swage roller axle 40, so, in order to guarantee the effective transmission of pressure in this embodiment, this closing device 5 is located this one side that is close to nip roll 4 on connecting piece 41.

Referring to fig. 2 and 4, the pressing device 5 includes a compression spring 51 sleeved on the straight rod 50, the bottom of the straight rod 50 is rotatably connected to the connecting member 41, the top of the straight rod 50 penetrates through the top of the rack 1, the compression spring 51 is disposed below the rack 1, a limiting protrusion 52 for limiting the downward movement of the compression spring 51 is disposed at a position of the straight rod 50 at the bottom of the compression spring 51, the top of the compression spring 51 is abutted to the lower surface of the rack 1, and a nut 53 in threaded engagement is disposed at a top of the straight rod 50 above the rack 1.

Since the pressing device 5 is provided on the side of the connecting member 41 close to the nip roll 4, the pressing device 5 on the connecting member 41 located below is liable to be interfered by the connecting member 41 located above, and therefore, in order not to interfere with the pressing device 5, as shown in fig. 4, in this embodiment, the width of the portion of the connecting member 41 provided with the bearing seat 42 is larger than that of the other portion, and the portion of the connecting member 41 provided with the elastic pressing device 5 protrudes outward. In this way, since the nip roller shaft 40 is spaced forward and backward in the horizontal direction, the front ends of the vertically adjacent links 41 are offset forward and backward in the horizontal direction, the front end of the lower link 41 is located just behind the front end of the upper link 41, and the pressing device 5 on the lower link 41 is located just in the recessed portion behind the front side protruding portion of the upper link 41.

In this embodiment, the transmission portion of the nip roller 4 includes a pair of nip gears 43 which are arranged at the end of each nip roller shaft 40 and rotate coaxially, the nip gears 43 located at the same side of the saw blade 3 are in transmission connection with each other in the same direction through a plurality of chains, the nip gears 43 distributed at both sides of the saw blade 3 are in transmission connection with the output shaft 60 of the speed reducer 6 through chains, and the transmission directions of the nip gears 43 at both sides of the saw blade 3 are the same.

Since each pressing roller shaft 40 needs to move up and down independently, the adjacent pressing roller shafts 40 on each side are in transmission connection through mutually independent closed chains.

In order to ensure that the wood can be effectively conveyed on the processing table 2 without slipping, a feeding roller 7 is further arranged under the two pressure rollers 4 which are far away from the two sides of the saw blade 3, as shown in fig. 1, the feeding roller 7 is embedded in the processing table 2, the height of the horizontal plane on which the top of the feeding roller 7 is positioned is greater than the height of the horizontal plane on which the upper surface of the processing table 2 is positioned, namely the top of the feeding roller 7 needs to be in contact with the wood, so that the wood can be fed together with the pressure rollers 4 in a clamping manner.

In the present embodiment, referring to fig. 2, both ends of the feeding roller shaft 70 of the feeding roller 7 are fixed on the frame 1 through bearing seats 71, and one end of the feeding roller shaft 70 located inside the frame 1 is provided with a pair of feeding gears 72 which are coaxially rotated and have the same diameter, and the rotation direction of the feeding gears 72 is opposite to the rotation direction of the pressing gears 43.

On the equipment of a multi-blade saw, for the compactness in structure and the saving of cost, the material pressing gear 43 and the material feeding gear 72 which are positioned at the same side of the saw blade 3 are respectively linked and driven through a direction-changing gear group 8, and the direction-changing gear group 8 is fixed on the frame 1 through a direction-changing gear shaft 80. The direction changing gear group 8 comprises a pair of direction changing gear shafts 80 which are on the same horizontal plane with the axis of the material pressing roller shaft 40, and direction changing gear shafts 80 are arranged, the front ends of the direction changing gear shafts 80 are provided with direction changing gears 81 which rotate coaxially and have the same diameter, and the tail ends of the direction changing gear shafts 80 are fixedly connected with a horizontal support 10 fixed on the rack 1.

The transmission direction of the utility model is shown as the circular arc arrow marked on each gear in figure 2, wherein the rotation directions of the pressure roll 4 and the feed roll 7 are opposite. Specifically, as shown in fig. 5, the transmission link structure of the output shaft 60 of the pressure roll 4, the feeding roll 7, the direction changing gear set 8 and the speed reducer 6 of the present invention takes one side of the saw blade 3 as an example, and the pressure gears 43 on the pressure roll shaft 40 include pressure gears 431 and 431 ', pressure gears 432 and 432 ', and pressure gears 433 and 433 ', which are three pairs in total, and each pair of gears coaxially rotate; the feed gears 72 on the feed roller shaft 70 include feed gears 721 and 721 'and feed gears 722 and 722', in total, two pairs, each pair rotating coaxially; direction change gears 811 and 811' and direction change gear 812 coaxially rotating on the direction change gear shaft 80; a pair of equal diameter co-axially rotating output gears 61 and 61' on the output shaft 60.

The concrete linking mode sequentially comprises the following steps of: the output gear 61 is in transmission link with the feeding gear 721, the feeding gear 721 'is in transmission link with the feeding gear 722', the feeding gear 722 is in transmission link with the direction changing gear 812 through a chain 78, the chain 78 is in circumscribed link transmission with the direction changing gear 811, the direction changing gear 811 'is in transmission link with the pressing gear 433', the pressing gear 433 is in transmission link with the pressing gear 432, and the pressing gear 432 'is in transmission link with the pressing gear 431'.

Each pair of gears on the pressing roller shaft 40, the feeding roller shaft 70, the direction changing gear shaft 80 and the output shaft 60 are arranged in parallel front and back on the shaft in the direction of the shaft axis, the space between each pair of gears is equal, and the gears on the same side on each shaft are in the same vertical plane.

The transmission link mode of the transmission pressure roller 4, the feeding roller 7, the change gear set 8 and the output shaft 60 of the speed reducer 6 on the other side of the saw blade 3 is the same as the aforementioned link mode, and adjacent gears are sequentially linked and transmitted through a chain from the output gear 61'.

As shown in fig. 1 to 3, the utility model discloses a still be equipped with air exhauster 11 on the multi-blade saw, exhaust pipe 12 of air exhauster 11, the rear end of saw bit 3 is equipped with drive wheel 30, and saw bit 3 and the coaxial rotation of drive wheel 30, the axle of saw bit 3 also are fixed in frame 1 through the bearing frame, and drive wheel 30 directly passes through belt drive with the power take-off wheel 14 of another motor 13 and is connected.

In this embodiment, the exhaust fan 11 is provided on the side of the direction of wood output, and a sloping plate 15 is provided below the processing table 2, the sloping plate being inclined such that the lower side of the sloping plate 15 is positioned at the suction port of the exhaust fan 11. The inclined plate 15 and a housing of the multi-blade saw apparatus (in fig. 1 to 3, the housing of the multi-blade saw is omitted for illustrating an internal structure) just form a relatively closed space, and wood chips generated when the saw blade 3 cuts the wood fall into the closed space, and the suction fan 11 is communicated with the space, and draws out the wood chips communicating air therefrom, and sends the air to the recycling apparatus through the exhaust duct 12, thereby preventing the wood chips from polluting the air.

The utility model discloses a multiple blade saw is equipped with vertical baffle 16 between the inboard of nip roll 4 and closing device 5, and the bottom of this vertical baffle 16 is connected with the inboard edge seal of processing platform 2, and with processing platform 2 isolated with other parts of equipment, the saw-dust of cutting can not pollute parts such as closing device 5 and drive division.

In practical application, the inclined plate 15, the vertical baffle 16, and the device housing not shown in the figure are connected with each other and connected with the frame 1 by welding or bolts, which are commonly used in the prior art, and are selectively used according to practical requirements, such as whether to be detachable or not.

The utility model discloses compare in prior art, the running roller that is used for compressing tightly timber among the prior art realizes compressing tightly the effect through the closing device at both ends, and its structure is inconvenient sets up the shell on the surface and comes and external isolated, but the utility model discloses a structure of multi-disc saw then can, through vertical baffle 16, not only will be apart other structures except that pressure roll 4 and processing platform, but also obtain certain pleasing to the eye effect.

The vertical baffle 16 is provided with a through hole for the material pressing roller shaft 40 to pass through, the length and the width of the through hole are reserved to be enough for the vertical fluctuation range of the material pressing roller shaft 40, an elastic rubber sheet commonly used in the prior art is arranged on the through hole, the material pressing roller shaft 40 passes through a cutting seam on the rubber sheet, and therefore sealing is not influenced, and the material pressing roller shaft 40 does not move up and down.

Referring to fig. 1 and 2, in the present embodiment, the outer side of the direction changing gear group 8 is also provided with the outer cover 83, and since the direction changing gear group 8 horizontally extends outward, the outer cover 83 is provided in order to prevent a worker from being injured by the worker and to prevent wood chips, dust, etc. from falling on the direction changing gear shaft 8.

Claims

1. Multi-disc saw, including the frame, the frame front side is equipped with the processing platform, and processing platform middle part is equipped with the saw bit, is equipped with a plurality of nip rolls in processing bench top, and nip roll is equipped with presses material roller, its characterized in that: the front end of the pressing roll shaft is horizontally suspended above the processing table, the tail end of the pressing roll shaft is rotatably connected with the rack through a connecting piece, the pressing roll shaft can move up and down relative to the processing table, and an elastic pressing device is arranged at a position, close to the front end, on the connecting piece.

2. The multi-blade saw as set forth in claim 1, wherein: the connecting piece is rectangular plate-shaped, the material pressing roller shaft is connected to the lower surface of the front end of the connecting piece through a bearing seat, the tail end of the connecting piece is rotatably connected with the rack, and the connecting piece rotates in the vertical direction.

3. The multi-blade saw as set forth in claim 2, wherein: the pressing device is arranged on the side, close to the nip roll, of the connecting piece.

4. The multi-blade saw as in claim 3, wherein: the pressing device comprises a compression spring sleeved on a straight rod, the bottom of the straight rod is rotatably connected with a connecting piece, the top of the straight rod penetrates out of the top of the rack, the compression spring is arranged below the rack, a limiting bulge for limiting the downward movement of the compression spring is arranged at the position, located at the bottom of the compression spring, on the straight rod, the top of the compression spring is abutted to the lower surface of the rack, and a nut in threaded fit is arranged at the top, located above the rack, of the straight rod.

5. A multi-blade saw as defined in any one of claims 2 to 4 wherein: the material pressing rollers are symmetrically arranged on two sides of the saw blade, the axial leads of the material pressing roller shafts are on the same horizontal plane, and the connecting pieces located on the same side are arranged in an up-down stacked mode.

6. The multi-blade saw as in claim 5, wherein: the tail ends of the connecting pieces on the same side are arranged in the same vertical plane at equal intervals from top to bottom.

7. The multi-blade saw as in claim 5, wherein: the width of the part of the front end of the connecting piece, which is provided with the bearing seat, is larger than the width of other parts, and the part of the front end of the connecting piece, which is provided with the elastic pressing device, protrudes outwards.

8. The multi-blade saw as in claim 5, wherein: the tail ends of the pressing roll shafts are provided with a pair of pressing gears which rotate coaxially and have the same diameter, the pressing gears which are positioned on the same side of the saw blade are in transmission connection in the same direction through a plurality of chains, the pressing gears on the two sides are in transmission connection with an output shaft of the speed reducer through the chains, and the transmission directions of the pressing gears on the two sides of the saw blade are consistent.

9. The multi-blade saw as in claim 8, wherein: the number of the pressure rolls on two sides of the saw blade is three, the feeding rolls are arranged right below the two pressure rolls which are far away from the two sides of the saw blade and embedded in the processing table, and the height of the horizontal plane on which the top of each feeding roll is located is larger than that of the horizontal plane on which the upper surface of the processing table is located; two ends of a feeding roll shaft of the feeding roll are fixed on the rack through bearing seats, one end of the feeding roll shaft, which is positioned on the inner side of the rack, is provided with a pair of feeding gears which rotate coaxially and have the same diameter, and the rotation direction of the feeding gears is opposite to that of the pressing gears.

10. The multi-blade saw as in claim 9, wherein: the material pressing gear and the material feeding gear which are positioned on the same side of the saw blade are respectively in link transmission through a turning gear set, and the turning gear set is fixed on the rack through a turning gear shaft.