CN216607470U

CN216607470U - Gantry type band sawing machine

Info

Publication number: CN216607470U
Application number: CN202123435007.0U
Authority: CN
Inventors: 许红华
Original assignee: Wuxi Cabos Power Transmission Technology Co ltd
Current assignee: Wuxi Cabos Power Transmission Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-27
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the field of cutting, in particular to a gantry type band sawing machine which comprises a band sawing machine body and a feeding frame connected with the band sawing machine body, wherein a feeding device is arranged on the feeding frame and comprises a first motor, a lead screw, a first nut block, a feeding arm and a synchronizing block, the first motor is arranged on the feeding frame, the lead screw is rotatably connected to one side of the feeding frame, the first motor is linked with the lead screw, the first nut block is in threaded connection with the lead screw, the first nut block is in sliding fit with the feeding frame, the synchronizing block is in sliding connection with one side, far away from the lead screw, of the feeding frame, one end of the feeding arm is hinged to the first nut block, and the other end of the feeding arm is detachably connected with the synchronizing block.

Description

Gantry type band sawing machine

Technical Field

The utility model relates to the field of cutting, in particular to a gantry type band sawing machine.

Background

With the continuous development of the machining and manufacturing industry in China, the requirements of machining equipment are more and more large, especially the requirements of cutting equipment, in the machining and manufacturing process, some steel pipes are generally required to be cut, and the demand of the cutting equipment is increasingly increased.

Chinese patent with publication number CN202411545U discloses a large gantry horizontal band sawing machine, which comprises a base, and a saw frame, a main speed reduction control device, a transmission system and a movable worktable which are arranged on the base, wherein the base is further provided with a gantry, the saw frame is arranged on the gantry, the gantry is provided with a main guide rail and an auxiliary guide rail which are matched with the saw frame, the transmission system and the main speed reduction control device are arranged on the saw frame, and the transmission system is provided with a saw blade hydraulic tensioning device.

Although the large gantry horizontal band sawing machine can cut steel pipes, in the cutting process, manual feeding is needed, and large manpower is consumed.

Disclosure of Invention

In order to use manpower sparingly, this application provides a planer-type band sawing machine.

The application provides a planer-type band sawing machine adopts following technical scheme:

the utility model provides a planer-type band sawing machine, including the band sawing machine body, still including the last work or material rest of connecting the band sawing machine body, be equipped with feeder on going up the work or material rest, feeder includes first motor, the lead screw, first nut piece, feeding arm and synchronizing block, first motor sets up on last work or material rest, the lead screw rotates and connects the one side at last work or material rest, first motor and lead screw linkage, first nut piece threaded connection is on the lead screw, first nut piece and last work or material rest sliding fit, synchronizing block sliding connection keeps away from one side of lead screw at last work or material rest, the one end of feeding arm is articulated with first nut piece, the other end can be dismantled with synchronizing block and be connected, feeding arm is located the work or material rest top.

Through adopting above-mentioned technical scheme, when the cutting steel pipe, after on placing the material loading frame with the steel pipe, rotate the feeding arm, the one end that makes the feeding arm keep away from first nut piece is connected on synchronizing block, start first motor, first motor drives first nut piece orientation under operating condition and is close to band sawing machine body direction and removes, first nut piece drives feeding arm and synchronizing block simultaneous movement, the feeding arm is at the steel pipe of contradicting all the time of removal in-process, exert thrust for the steel pipe, thereby make the steel pipe orientation be close to band sawing machine body direction and remove, manual feeding has been replaced, realize automatic feed's purpose, use manpower sparingly.

Optionally, a groove is arranged on the synchronizing block, one end of the feeding arm far away from the first nut block is inserted into the groove, a positioning piece is arranged on the synchronizing block, the positioning piece comprises a positioning rod and a connecting rod, handle and spring, be equipped with the second grade shoulder hole on the synchronous piece, the less one end of second grade shoulder hole internal diameter and synchronous piece lateral wall intercommunication, the great one end of second grade shoulder hole internal diameter communicates to the recess, the connecting rod runs through the less part of second grade shoulder hole internal diameter, the connecting rod stretches into the one end connection locating lever to the great part of second grade shoulder hole internal diameter, locating lever and second grade shoulder hole sliding fit, the connecting rod is located the outside one end connection handle of synchronous piece, the spring housing is established on the connecting rod, the spring is located synchronous piece outside, the handle is connected to the one end of spring, synchronous piece is connected to the other end, be equipped with on the feeder arm and insert and establish the hole, when the spring is in natural state, the locating lever is inserted and is established downtheholely.

By adopting the technical scheme, the feeding arm is inserted into the groove, so that the end, far away from the first nut block, of the feeding arm can be limited, and the feeding arm is prevented from being separated from the synchronous block; insert the feed arm in the recess before, the pulling handle, the spring is stretched, connecting rod and locating lever orientation are kept away from the recess direction and are removed, the locating lever removes to the second grade shoulder hole, so that with the smooth recess of putting into of feed arm, put into the recess with the feed arm after, remove the pulling force to the handle, the spring becomes natural state by tensile state, at this in-process, the locating lever, connecting rod and handle orientation are close to the feed arm orientation and are removed, the locating lever is inserted and is established downtheholely, thereby to the feed arm location, the stability of feed arm in the recess has both been improved, the purpose of connecting feed arm and synchronizing block has been realized again.

Optionally, the recess lateral wall inlays and is equipped with the magnet piece, and the feed arm is iron material, and the feed arm is adsorbed by the magnet piece.

Through adopting above-mentioned technical scheme, insert the recess back with the feed arm, the feed arm is adsorbed by the magnet piece to further improve the stability between feed arm and the synchronizing block.

Optionally, be equipped with mounting groove and clamping device on the workstation of band sawing machine body, clamping device includes second motor, supporting rod, second nut piece, third nut piece and grip block, the second motor sets up in the mounting groove, the supporting rod rotates to be connected in the mounting groove, be equipped with two sections opposite direction's screw thread on the supporting rod, second nut piece threaded connection is on one section screw thread, third nut piece threaded connection is on another section screw thread, second nut piece and third nut piece all with the workstation sliding fit of band sawing machine body, the grip block sets up on second nut piece and third nut piece, and the grip block is protruding in the mounting groove.

Through adopting above-mentioned technical scheme, when cutting the steel pipe, start the second motor, second motor drive second nut piece and third nut piece move towards the direction that is close to each other, and second nut piece and third nut piece are with the steel pipe centre gripping to the realization carries out centre gripping, spacing purpose to the steel pipe, improves the stability of steel pipe in cutting process.

Optionally, go up the work or material rest and include support body and driving roller, the support body is connected on the workstation of band sawing machine body, the driving roller rotates to be connected on the support body, the driving roller interval sets up, be equipped with a plurality of groups stop device on the support body, stop device sets up along the length direction of support body, stop device includes first cylinder, the lifter plate, the second cylinder, movable plate and stopper, the vertical setting of first cylinder is on the support body, the lifter plate is connected to the piston rod of first cylinder, connect the second cylinder that two levels set up on the lifter plate, and the piston rod of two second cylinders sets up relatively, the movable plate is connected to the piston rod of second cylinder, the stopper is connected on the movable plate, the width of stopper is less than the space between the adjacent driving roller.

By adopting the technical scheme, before feeding work is carried out, the first air cylinder is started, the first air cylinder drives the lifting plate to move, the limiting blocks penetrate through a gap between adjacent transmission rollers and are positioned at two sides of the steel pipe, the second air cylinder is started, the second air cylinder drives the moving plate and the limiting blocks to move, so that the limiting blocks are contacted with the steel pipe, in the moving process of the steel pipe, the feeding arm pushes the steel pipe to move forwards, when the feeding arm is close to the limiting devices, the first motor is closed, the feeding arm does not move continuously, the second air cylinder is started first, the first air cylinder is started again, the limiting blocks close to the feeding arm move towards the direction far away from the steel pipe first, then the first motor is started again, the feeding arm moves continuously, when the feeding arm is close to other limiting devices again, the first motor is closed again, the second air cylinder is started again first, then the first air cylinder is started, the limiting blocks close to the feeding arm continue to move towards the direction far away from the steel pipe, and moving to the lower part of the transmission roller, continuing to move the feeding arm, and repeating the steps to finish the feeding process. The limiting device can guide the moving direction of the steel pipe, and the possibility that the moving direction of the steel pipe changes is reduced.

Optionally, the limiting block is connected to the moving plate through a rotating cylinder, and an arc-shaped groove is formed in one vertical side wall of the limiting block.

Through adopting above-mentioned technical scheme, if the steel pipe that needs promote is square, when spacing to the steel pipe, starts revolving cylinder, makes the vertical plane of stopper towards the steel pipe, then contacts the steel pipe, if the steel pipe that needs promote is cylindrical, then adjusts the stopper through revolving cylinder, makes one side orientation steel pipe that the stopper has the arc wall to through arc wall contact steel pipe, so that provide better spacing effect.

Optionally, be equipped with the concentric arc piece of a plurality of in the arc wall, can dismantle between the arc piece of conflict arc wall lateral wall and the stopper and be connected, can dismantle between the adjacent arc piece and be connected.

Through adopting above-mentioned technical scheme, if the steel pipe is cylindrical, the staff can select suitable arc piece according to the steel pipe size, installs corresponding arc piece on the stopper to can be better carry on spacingly to the steel pipe, improve spacing effect.

Optionally, the feeding frame is detachably connected with the band sawing machine body

Through adopting above-mentioned technical scheme, when the transportation, can open the transportation with the splitting of last work or material rest and band sawing machine body, avoid going up work or material rest and this body coupling of band sawing machine and transport together, occupation space.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the cutting steel pipe, after placing the last work or material rest with the steel pipe, rotate the feeding arm, the one end that makes the feeding arm keep away from first nut piece is connected on the synchronizing block, start first motor, first motor drives first nut piece orientation under operating condition and is close to band sawing machine body direction and removes, first nut piece drives feeding arm and synchronizing block and removes simultaneously, the feeding arm is at the steel pipe of contradicting all the time of removal in-process, exert thrust for the steel pipe, thereby make the steel pipe orientation be close to band sawing machine body direction and remove, artificial feeding has been replaced, realize the purpose of automatic feed, use manpower sparingly.

2. The feeding arm is inserted into the groove, so that one end of the feeding arm, which is far away from the first nut block, can be limited, and the feeding arm is prevented from being separated from the synchronous block; insert the feed arm in the recess before, the pulling handle, the spring is stretched, connecting rod and locating lever orientation are kept away from the recess direction and are removed, the locating lever removes to the second grade shoulder hole, so that with the smooth recess of putting into of feed arm, put into the recess with the feed arm after, remove the pulling force to the handle, the spring becomes natural state by tensile state, at this in-process, the locating lever, connecting rod and handle orientation are close to the feed arm orientation and are removed, the locating lever is inserted and is established downtheholely, thereby to the feed arm location, the stability of feed arm in the recess has both been improved, the purpose of connecting feed arm and synchronizing block has been realized again.

3. After the feeding arm is inserted into the groove, the feeding arm is adsorbed by the magnet block, so that the stability between the feeding arm and the synchronous block is further improved.

Drawings

Fig. 1 is a schematic structural diagram for embodying the gantry-type band sawing machine in the present embodiment.

Fig. 2 is a schematic structural diagram for embodying the limiting device in this embodiment.

Fig. 3 is a schematic structural diagram for showing a positional relationship between the arc-shaped block and the limiting block in this embodiment.

Fig. 4 is a schematic structural diagram for showing a connection relationship between the feeding arm and the synchronization block in the present embodiment.

Description of reference numerals:

1. a band sawing machine body; 2. mounting grooves; 3. a second motor; 4. a clamping rod; 5. a second nut block; 6. a third nut block; 7. a clamping plate; 8. a frame body; 9. a driving roller; 10. a fixing sheet; 11. a first cylinder; 12. a lifting plate; 13. a second cylinder; 14. moving the plate; 15. a limiting block; 16. a rotating cylinder; 17. an arc-shaped block; 18. a first motor; 19. a lead screw; 20. a first nut block; 21. a feeding arm; 22. a synchronization block; 23. a first guide bar; 24. a second guide bar; 25. a groove; 26. positioning a rod; 27. a connecting rod; 28. a handle; 29. a spring; 30. a second-stage stepped hole; 31. inserting the holes; 32. and a magnet block.

Detailed Description

The embodiment of the application discloses planer-type band sawing machine. Referring to fig. 1, the gantry band sawing machine comprises a band sawing machine body 1 and a feeding frame.

Referring to fig. 1, be equipped with mounting groove 2 and clamping device on the workstation of band saw machine body 1, clamping device includes second motor 3, supporting rod 4, second nut piece 5, third nut piece 6 and grip block 7, second motor 3 sets up in mounting groove 2, supporting rod 4 rotates to be connected in mounting groove 2, be equipped with two sections opposite direction's screw thread on supporting

rod

4, 5 threaded connection of second nut piece are on one section screw thread, 6 threaded connection of third nut piece are on another section screw thread, second nut piece 5 and third nut piece 6 all with the workstation sliding fit of band saw machine body 1, it is specific, second nut piece 5 and third nut piece 6 are located mounting groove 2 and with mounting groove 2 sliding fit, grip block 7 sets up on second nut piece 5 and third nut piece 6, and grip block 7 is protruding in mounting groove 2.

The second motor 3 drives the clamping rod 4 to rotate in a working state, and the clamping rod 4 drives the second nut block 5 and the third nut block 6 to move towards opposite directions in the rotating process; when the steel pipe is cut, the second motor 3 is controlled to enable the second nut block 5 and the third nut block 6 to move towards the mutually approaching direction, the clamping plate 7 on the second nut block 5 and the clamping plate 7 on the third nut block 6 clamp the steel pipe, and the steel pipe is limited so as to improve the stability of the steel pipe in the cutting process; after the steel pipe cutting, control second motor 3, make second nut piece 5 and third nut piece 6 remove towards the direction of keeping away from each other, and the steel pipe is no longer pressed from both sides tightly to grip block 7, removes the spacing to the steel pipe.

Referring to fig. 1, go up and to dismantle between work or material rest and the band sawing machine body 1 the workstation and be connected, it is specific, go up the work or material rest and include support body 8 and driving roller 9, the one end of support body 8 is connected with stationary blade 10, and the connection can be dismantled on the workstation of band sawing machine body 1 through the screw to stationary blade 10, and driving roller 9 rotates to be connected on support body 8, and the interval sets up between the adjacent driving roller 9.

Referring to fig. 1, 2 and 3, a plurality of sets of limiting devices are disposed on a frame body 8, in this embodiment, the limiting devices are disposed in four sets, the limiting devices are disposed along a length direction of the frame body 8, each limiting device includes a first cylinder 11, a lifting plate 12, a second cylinder 13, a moving plate 14 and a limiting block 15, the first cylinder 11 is vertically disposed on the frame body 8 and located below a transmission roller 9, a piston rod of the first cylinder 11 is connected to the lifting plate 12, the lifting plate 12 is connected to two horizontally disposed second cylinders 13, piston rods of the two second cylinders 13 are oppositely disposed, a piston rod of the second cylinder 13 is connected to the moving plate 14, the limiting block 15 is connected to the moving plate 14 through a rotating cylinder 16, the rotating cylinder 16 is connected to the moving plate 14, the limiting block 15 is connected to a rotating rod of the rotating cylinder 16, a width of the limiting block 15 is smaller than a gap between adjacent transmission rollers 9, so that the limiting block 15 can freely pass through between the adjacent two transmission rollers 9, be equipped with the arc wall on the vertical lateral wall of stopper 15, the arc wall in-connection has three concentric arc piece 17, can dismantle through countersunk screw between the arc piece 17 of conflict arc wall lateral wall and the stopper 15 and be connected, can dismantle through countersunk screw between the adjacent arc piece 17 and be connected.

After putting into driving roller 9 with the steel pipe on, according to the shape of steel pipe, adjust stopper 15's position, if the steel pipe is square steel pipe, start revolving cylinder 16, make stopper 15's vertical plane towards the steel pipe, if the steel pipe is cylindrical steel pipe, start revolving cylinder 16, one side that has arc piece 17 on making stopper 15 is towards the steel pipe, and can be according to the size of cylindrical steel pipe size, install arc piece 17 of corresponding size on stopper 15, so that arc piece 17 can be smooth in follow-up operation in-process laminating in the steel pipe lateral wall.

After adjusting stopper 15, start first cylinder 11, first cylinder 11 drives lifter plate 12, second cylinder 13, revolving cylinder 16 and stopper 15 move upwards, stopper 15 passes the space between the adjacent driving roller 9, then start second cylinder 13, second cylinder 13 drives movable plate 14, revolving cylinder 16 and stopper 15 horizontal migration, make the arc piece 17 on stopper 15 or the stopper 15 can contact the steel pipe, thereby spacing the steel pipe, if the steel pipe is promoted towards band sawing machine body 1 direction, then at the steel pipe removal in-process, can lead to the moving direction of steel pipe.

Referring to fig. 1, a feeding device is connected to the frame body 8, and the feeding device includes a first motor 18, a screw rod 19, a first nut block 20, a feeding arm 21, and a synchronizing block 22.

Referring to fig. 1, first motor 18 sets up on support body 8, lead screw 19 rotates to be connected in one side of support body 8, the motor shaft and the lead screw 19 of first motor 18 are connected, first nut piece 20 threaded connection is on lead screw 19,

first nut piece

20 and 8 sliding fit of support body, be connected with first guide bar 23 on the support body 8, first guide bar 23 runs through first nut piece 20, first nut piece 20 can slide along first guide bar 23, synchronizing block 22 sliding connection is in one side that lead screw 19 was kept away from to support body 8, be connected with second guide bar 24 on the support body 8, synchronizing block 22 slides to overlap and establishes on second guide bar 24, the one end of feeding arm 21 is articulated with first nut piece 20, the other end can be dismantled with synchronizing block 22 and be connected, feeding arm 21 is located driving roller 9 top.

When needs are to take band saw bed body 1 feed, place the steel pipe on driving roller 9, rotate feeding arm 21, the one end that makes feeding arm 21 keep away from first nut piece 20 is connected on synchronizing block 22, start first motor 18, first motor 18 drives lead screw 19 and rotates, lead screw 19 drives first nut piece 20 and removes at the rotation in-process, first nut piece 20 drives feeding arm 21 and synchronizing block 22 and removes, feeding arm 21 supports the steel pipe at the removal in-process, the application of force to the steel pipe, push the steel pipe to band saw bed body 1, realize the purpose of feed.

Referring to fig. 1 and 4, a groove 25 is formed in the synchronizing block 22, one end of the feeding arm 21, which is far away from the first nut block 20, is inserted into the groove 25, a positioning member is connected to the synchronizing block 22, the positioning member includes a positioning rod 26, a connecting rod 27, a handle 28 and a spring 29, a second-stage stepped hole 30 is formed in the synchronizing block 22, one end of the second-stage stepped hole 30, which has a smaller inner diameter, is communicated with a side wall of the synchronizing block 22, one end of the second-stage stepped hole 30, which has a larger inner diameter, is communicated with the groove 25, the connecting rod 27 penetrates through the smaller inner diameter portion of the second-stage stepped hole 30, the connecting rod 27 extends into one end of the second-stage stepped hole 30, which has a larger inner diameter, is connected to the positioning rod 26, which is in sliding fit with the second-stage stepped hole 30, one end of the connecting rod 27, which is located outside the synchronizing block 22, is connected to the handle 28, the spring 29 is located outside the synchronizing block 22, one end of the spring 29 is connected to the handle 28, and the other end is connected to the synchronizing block 22, the feeding arm 21 is provided with an inserting hole 31, when the feeding arm 21 is inserted into the groove 25 and abuts against the bottom of the groove 25, the inserting hole 31 corresponds to the second-stage stepped hole 30, and when the spring 29 is in a natural state, the positioning rod 26 is inserted into the inserting hole 31.

Referring to fig. 4, a magnet block 32 is embedded in a side wall of the groove 25 opposite to the second-stage stepped hole 30, the feeding arm 21 is made of an iron material, and the feeding arm 21 is adsorbed by the magnet block 32.

When the feed arm 21 and the synchronization block 22 are connected, before the feed arm 21 is inserted into the groove 25, the handle 28 is pulled, the spring 29 is stretched, the connecting rod 27 and the positioning rod 26 move in a direction away from the groove 25, the positioning rod 26 moves into the second-stage stepped hole 30, the feed arm 21 is placed into the groove 25, the feed arm 21 abuts against the bottom of the groove 25, the feed arm 21 is attracted by the magnet block 32, the pulling force on the handle 28 is released, the spring 29 is changed from the stretched state to the natural state, the positioning rod 26, the connecting rod 27 and the handle 28 move in a direction close to the feed arm 21, the positioning rod 26 is inserted into the insertion hole 31, the positioning rod 26 is engaged with the magnet block 32, and the connection between the feed arm 21 and the synchronization block 22 is completed.

When the feeding arm 21 and the synchronizing block 22 are separated, the handle 28 is pulled towards the direction far away from the feeding arm 21, the positioning rod 26 moves along with the handle 28, the positioning rod 26 is separated from the inserting hole 31 and enters the second-stage stepped hole 30, the limitation on the feeding arm 21 is removed, the feeding arm 21 is rotated, the feeding arm 21 is separated from the magnet block 32, the feeding arm 21 is moved out of the groove 25, and the separation between the feeding arm 21 and the synchronizing block 22 is completed.

The implementation principle of this application embodiment a planer-type band sawing machine does: when a steel pipe is cut, after the steel pipe is placed on a feeding frame, the limiting block 15 is adjusted according to the shape of the steel pipe, then the limiting device is operated, the limiting block 15 or the arc-shaped block 17 on the limiting block 15 is enabled to contact two sides of the steel pipe, then the feeding arm 21 is connected to the synchronizing block 22, the first motor 18 is started, the feeding arm 21 pushes the steel pipe to move towards the band sawing machine body 1, in the moving process of the feeding arm 21, when the feeding arm 21 is close to the limiting device, the first motor 18 is closed, the feeding arm 21 does not continue to move, the second cylinder 13 is started first, then the first cylinder 11 is started, the limiting block 15 close to the feeding arm 21 moves towards the direction away from the steel pipe first, then the limiting block moves to the lower part of the transmission roller 9, the limiting device close to the feeding arm 21 does not block the movement of the feeding arm 21, then the first motor 18 is started, the feeding arm 21 continues to move, when the feeding arm 21 is close to other limiting devices, and then the first motor 18 is closed, the second air cylinder 13 and the first air cylinder 11 are sequentially started, the limiting block 15 close to the feeding arm 21 moves towards the direction away from the steel pipe, then the limiting block moves to the position below the driving roller 9, the feeding arm 21 continues to move, and the like, so that the feeding process is completed. In the feeding process, the feeding device replaces manual feeding, the purpose of automatic feeding is achieved, and manpower is saved.

Claims

1. The utility model provides a planer-type band sawing machine, includes band sawing machine body (1), its characterized in that: still including the last work or material rest of connecting band saw (ing) machine body (1), be equipped with feeder on going up the work or material rest, feeder includes first motor (18), lead screw (19), first nut piece (20), feed arm (21) and synchronizing block (22), first motor (18) set up on last work or material rest, lead screw (19) rotate to be connected in the one side of last work or material rest, first motor (18) and lead screw (19) linkage, first nut piece (20) threaded connection is on lead screw (19), first nut piece (20) and last work or material rest sliding fit, synchronizing block (22) sliding connection keeps away from the one side of lead screw (19) at last work or material rest, the one end and the first nut piece (20) of feed arm (21) are articulated, the other end can be dismantled with synchronizing block (22) and be connected, feed arm (21) are located the work or material rest top.

2. The gantry type band sawing machine according to claim 1, characterized in that: the feeding mechanism is characterized in that a groove (25) is formed in the synchronizing block (22), one end, far away from the first nut block (20), of the feeding arm (21) is inserted into the groove (25), a positioning piece is arranged on the synchronizing block (22) and comprises a positioning rod (26), a connecting rod (27), a handle (28) and a spring (29), a secondary stepped hole (30) is formed in the synchronizing block (22), one end, with a smaller inner diameter, of the secondary stepped hole (30) is communicated with the side wall of the synchronizing block (22), one end, with a larger inner diameter, of the secondary stepped hole (30) is communicated with the groove (25), the connecting rod (27) penetrates through the smaller inner diameter part of the secondary stepped hole (30), the connecting rod (27) extends into one end, with a larger inner diameter, of the secondary stepped hole (30) to be connected with the positioning rod (26), the positioning rod (26) is in sliding fit with the secondary stepped hole (30), one end, located outside the synchronizing block (22), of the connecting rod (27) is connected with the handle (28), the spring (29) is sleeved on the connecting rod (27), the spring (29) is located outside the synchronizing block (22), one end of the spring (29) is connected with the handle (28), the other end of the spring is connected with the synchronizing block (22), the feeding arm (21) is provided with an inserting hole (31), and when the spring (29) is in a natural state, the positioning rod (26) is inserted into the inserting hole (31).

3. The gantry type band sawing machine according to claim 2, characterized in that: the side wall of the groove (25) is embedded with a magnet block (32), the feeding arm (21) is made of iron, and the feeding arm (21) is adsorbed by the magnet block (32).

4. The gantry type band sawing machine according to claim 1, characterized in that: be equipped with mounting groove (2) and clamping device on the workstation of band saw (ing) machine body (1), clamping device includes second motor (3), supporting rod (4), second nut piece (5), third nut piece (6) and grip block (7), second motor (3) set up in mounting groove (2), supporting rod (4) rotate to be connected in mounting groove (2), be equipped with two sections opposite direction's screw thread on supporting rod (4), second nut piece (5) threaded connection is on one section screw thread, third nut piece (6) threaded connection is on another section screw thread, second nut piece (5) and third nut piece (6) all with the workstation sliding fit of band saw (ing) machine body (1), grip block (7) set up on second nut piece (5) and third nut piece (6), and grip block (7) are followed mounting groove (2) and are interior play.

5. The gantry band sawing machine according to claim 1, wherein: the feeding frame comprises a frame body (8) and transmission rollers (9), the frame body (8) is connected to a workbench of a band sawing machine body (1), the transmission rollers (9) are rotatably connected to the frame body (8), the transmission rollers (9) are arranged at intervals, a plurality of groups of limiting devices are arranged on the frame body (8), the limiting devices are arranged along the length direction of the frame body (8), each limiting device comprises a first air cylinder (11), a lifting plate (12), second air cylinders (13), a moving plate (14) and limiting blocks (15), the first air cylinders (11) are vertically arranged on the frame body (8), piston rods of the first air cylinders (11) are connected with the lifting plate (12), the lifting plate (12) is connected with the two horizontally arranged second air cylinders (13), the piston rods of the two second air cylinders (13) are oppositely arranged, the piston rods of the second air cylinders (13) are connected with the moving plate (14), the limiting blocks (15) are connected to the moving plate (14), the width of the limiting block (15) is smaller than the gap between the adjacent driving rollers (9).

6. The gantry type band sawing machine according to claim 5, characterized in that: the limiting block (15) is connected to the moving plate (14) through a rotating cylinder (16), and an arc-shaped groove is formed in one vertical side wall of the limiting block (15).

7. The gantry type band sawing machine according to claim 6, wherein: be equipped with concentric arc piece (17) of a plurality of in the arc wall, can dismantle between arc piece (17) and the stopper (15) of contradicting the arc wall lateral wall and be connected, can dismantle between adjacent arc piece (17) and be connected.

8. The gantry type band sawing machine according to claim 1, characterized in that: the feeding frame is detachably connected with the band sawing machine body (1).