A bow sawing machine

Abstract

The present invention relates to the field of bow saw machines, specifically a bow saw machine, comprising a bed body; a lifting assembly is provided on the material platform of the bed body, and the lifting assembly can realize up and down height adjustment of the material; a clamping assembly is symmetrically provided on the lifting assembly, and the clamping assembly is used to fix the material on the lifting assembly, and a connecting structure is provided on the clamping assembly; compared with the existing bow saw machine, the bow saw machine designed in the present invention can rotate the original fixed part round bar material, so that the round bar material and the cutting saw cooperate to cut a relatively regular circular groove, and at the same time, the processing efficiency is also improved. During the entire sawing process, there is no need to stop the machine to operate the round bar material, and the number of times that manual labor contacts the running bow saw machine is reduced, thereby improving safety.

Description

Technical Field

[0001] The invention relates to the field of bow sawing machines, in particular to a bow sawing machine. Background Art

[0002] A bow saw is a mechanical device used for metal cutting. It uses a reciprocating saw bow to achieve metal cutting. The saw bow is equipped with a saw blade. When the saw bow moves back and forth, the saw blade contacts and cuts the metal. Bow saws are usually used to cut large metal parts, such as steel beams, round bars, etc. In the machinery workshop, there is a support frame, the support body of which is composed of round bars and hanging ears, such as Figure 1 As shown in , the hanging ears are vertically welded on the surface of the round bar material, and multiple supporting bodies constitute the supporting system of the supporting frame. Then, the bearing plate is installed on the hanging ears to assemble the supporting frame. In actual use, the firmness of the hanging ears and the round bar material is poor. After repeated impacts by heavy objects, the welding point between the hanging ears and the round bar material is prone to cracking. For this reason, the manufacturer has made improvements on this basis, opening a circular groove in the radial direction of the round bar material, and then opening a notch that fits the circular groove at the end of the hanging ear. The hanging ear is embedded in the circular groove, and then welding is performed, as shown in FIG. Figure 2 and Figure 3 As shown, the impact resistance can be improved. Not only that, but welding is also convenient. The hanging ear is embedded in the circular groove, and there is no need to support and straighten the hanging ear.

[0003] The annular groove on the round bar material is generally processed by a lathe or a bow saw. In lathe processing, the round bar material is used as a rotating part, and the turning tool gradually turns out the annular groove, but the turning tool processing depth is limited, that is, the inner diameter of the processed annular groove fails to meet the standard. When processed by an existing bow saw, the round bar material is used as a fixed part, and the cutting saw is a movable part. However, the annular groove needs to be sawed out, and the round bar material needs to be rotated at intervals. This operation method is inefficient and it is difficult to determine the cutting shape of the annular groove. If the cutting shape of the annular groove is less regular, it is difficult to accurately match the ear with a notch. Moreover, each time the round bar material is rotated, the machine needs to be stopped to ensure safety.

[0004] Therefore, a hack sawing machine is proposed to solve the above problems. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the bow saw machine described in the present invention comprises a bed body; a lifting assembly is provided on the material platform of the bed body, and the lifting assembly can adjust the material up and down; a clamping assembly is symmetrically provided on the lifting assembly, and the clamping assembly is used to fix the material on the lifting assembly, and a connecting structure is provided on the clamping assembly;

[0007] The clamping assembly includes two groups of arc-shaped plates capable of clamping materials, an arc-shaped groove is provided in the inner circle of the arc-shaped plate, a plurality of rollers are rotatably connected in the arc-shaped groove, and the materials are rotatably connected to two adjacent arc-shaped plates through the rollers;

[0008] The connection structure is located outside the clamping assembly, and the connection structure includes a gear ring, one end face of the gear ring is fixedly connected to a ring body, and the outer ring of the ring body is threadedly connected to a plurality of fastening bolts, and the fastening bolts can fasten the end of the material to the gear ring;

[0009] The movable guide arm of the bed body is provided with a rubbing assembly on both sides, and the rubbing assembly can move back and forth synchronously with the movable guide arm, and the rubbing assembly includes a horizontal plate, and an L-shaped rod is vertically fixed to the end of the horizontal plate. The horizontal rod of the L-shaped rod is located above the gear ring, and a rotating groove is opened on the lower surface of the horizontal rod of the L-shaped rod. A shift block is provided in the rotating groove. The shift block is hinged in the rotating groove through a torsion spring, and the shift block can shift the gear ring to rotate.

[0010] Preferably, a recess is provided on the upper surface of the material platform, and a lifting assembly is arranged in the recess; the lifting assembly includes two No. 1 screw rods, the two No. 1 screw rods are rotatably connected in the recess, and the two No. 1 screw rods are both transmission-connected with wedge blocks, which are arranged close to the end of the No. 1 screw rod; a lifting platform is arranged in the recess, and oblique openings are provided on both sides of the lower surface of the lifting platform, and the oblique openings are arranged opposite to the wedge blocks.

[0011] Preferably, a groove is provided on the upper surface of the lifting platform, a buffer platform is arranged in the groove, the lower surface of the buffer platform is connected to the surface of the groove through a plurality of springs, and clamping components are symmetrically arranged on the upper surface of the buffer platform.

[0012] Preferably, each of the clamping assemblies further comprises two symmetrically arranged No. 2 screw rods, which are vertically rotatably connected to the buffer table, the threads on each No. 2 screw rod are halved and symmetrically arranged, and two adjacent No. 2 screw rods are transmission-connected to two arc-shaped plates symmetrically arranged up and down.

[0013] Preferably, the vertical rod of each L-shaped rod comprises a fixed portion and a movable portion; the fixed portion is fixed to the lower surface of the end of the horizontal plate, and the movable portion is fixed to the horizontal rod of the L-shaped rod;

[0014] A waist-shaped hole is arranged on the fixed connection part, a screw rod is fixedly connected to the side wall of the movable connection part, the screw rod passes through the waist-shaped hole, and can be adjusted up and down along the waist-shaped hole.

[0015] Preferably, a touch valve is provided on the lower surface of the transverse fixed guide arm of the bed, the oil inlet of the touch valve is connected to the external oil pump through a hose, the oil outlet of the touch valve is connected to the hollow guide rod through an oil pipe, the movable guide arm can reciprocate along the guide rod, a plurality of oil holes are provided on the surface of the guide rod, and a touch block is provided on the end surface of the movable guide arm, and the touch block can contact the touch valve;

[0016] The touch valve comprises a valve body, a touch head connected with a compression spring is arranged in the valve body, a through hole is arranged at the inner end of the touch head, and the through hole can communicate with the oil inlet and the oil outlet of the valve body.

[0017] Preferably, a plurality of oil passages are provided inside the movable guide arm, the oil passages penetrate to the middle position of the bottom of the movable guide arm, and an oil guide pipe is provided at the oil discharge hole position of the oil passage.

[0018] Preferably, limiting grooves are provided on both vertical side walls of the recess and the groove, and limiting blocks adapted to the limiting grooves are provided on both sides of the lifting platform and the buffer platform, and the limiting blocks are slidably connected in the limiting grooves.

[0019] Preferably, a plurality of balls are rotatably connected to the surface of each wedge block opposite to the bevel.

[0020] Preferably, a scale is provided on the side wall of the fixed portion, and a pointer is provided on the side wall of the movable portion.

[0021] The present invention is beneficial in that:

[0022] 1. Compared with the existing bow saw machines, the bow saw machine designed in the present invention can rub and rotate the original fixed round bar material, so that the round bar material and the cutting saw can cooperate to cut out relatively regular circular grooves. At the same time, the processing efficiency is also improved. During the entire sawing process, there is no need to stop the machine to operate the round bar material. Furthermore, the number of times that manual labor contacts the running bow saw machine is reduced, thereby improving safety.

[0023] 2. By dividing the vertical rod of the L-shaped rod into a fixed part and a movable part, the movable part can move up and down along the fixed part; when the fixed guide arm moves down, the movable part moves up, and after moving up, the screw rod cooperates with the nut to fix the movable part on the fixed part; when the fixed guide arm moves up, the movable part moves down, and after moving down, the screw rod cooperates with the nut to fix the movable part on the fixed part, thereby ensuring that the distance between the horizontal rod of the L-shaped rod and the gear ring remains unchanged, so that the shift block can effectively touch the gear ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of the welding coordination between the existing round bar material and the hanging ear;

[0025] Figure 2 It is a three-dimensional diagram of the welding cooperation between the round bar material and the hanging ear in the present invention;

[0026] Figure 3 is a cross-sectional view of a round bar material in the present invention;

[0027] Figure 4 A first-view stereoscopic view of the bow saw machine of the present invention;

[0028] Figure 5A second perspective stereoscopic view of the bow saw machine of the present invention;

[0029] Figure 6 is a cross-sectional view of the bow saw machine in the present invention;

[0030] Figure 7 A top view of the bow saw machine in the present invention;

[0031] Figure 8 It is a three-dimensional diagram of the material platform in the present invention;

[0032] Fig. 9 is a cross-sectional view of the material platform in the present invention;

[0033] Fig.10 is a three-dimensional diagram of the lifting assembly in the present invention;

[0034] Fig.11 A three-dimensional diagram of a fixed guide arm in the present invention;

[0035] Fig.12 is a three-dimensional diagram of the guide rod in the present invention;

[0036] Fig.13 A three-dimensional diagram of the movable guide arm of the present invention;

[0037] Fig.14 It is a three-dimensional diagram of the cooperation between the cross plate and the movable guide arm in the present invention;

[0038] Fig.15 is a three-dimensional diagram of an L-shaped rod in the present invention;

[0039] Fig.16 It is a cross-sectional view of the trigger valve in the present invention.

[0040] In the figure: 1, bed; 2, arc plate; 3, arc groove; 4, roller body; 5, gear ring; 6, ring body; 7, fastening bolt; 8, movable guide arm; 9, cross plate; 10, L-shaped rod; 11, rotating groove; 12, shift block; 13, cutting saw; 14, circular groove; 15, hanging ear; 16, recess; 17, No. 1 screw rod; 18, wedge block; 19, lifting platform; 20, oblique mouth; 21, groove; 22, buffer table; 23, spring; 2 4. Screw rod No. 2; 25. Fixed part; 26. Ball bearing; 27. Flexible joint; 28. Waist-shaped hole; 29. ​​Fixed guide arm; 30. Cylinder; 31. Touch valve; 32. Hose; 33. Guide rod; 34. Oil hole; 35. Touch block; 36. Valve body; 37. Touch head; 38. Through hole; 39. Oil inlet; 40. Oil outlet; 41. Oil guide pipe; 42. Limit groove; 43. Limit block; 44. Round bar; 45. Scale. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0042] Reference Figure 1 - Fig.15 A bow saw machine comprises a bed 1; a lifting assembly is provided on a material platform of the bed 1, and the lifting assembly can adjust the height of the material up and down; a clamping assembly is symmetrically provided on the lifting assembly, and the clamping assembly is used to fix the material on the lifting assembly, and a connecting structure is provided on the clamping assembly;

[0043] The clamping assembly includes two groups of arc plates 2 that can clamp the material. The inner circle of the arc plate 2 is provided with an arc groove 3. A plurality of rollers 4 are rotatably connected in the arc groove 3. The material is rotatably connected to two adjacent arc plates 2 through the rollers 4.

[0044] The connection structure is located outside the clamping assembly, and the connection structure includes a gear ring 5, one end face of the gear ring 5 is fixedly connected to a ring body 6, and the outer ring of the ring body 6 is threadedly connected to a plurality of fastening bolts 7, and the fastening bolts 7 can fasten the end of the material to the gear ring 5;

[0045] The movable guide arm 8 of the bed body 1 is provided with a rubbing assembly on both sides, and the rubbing assembly can move back and forth synchronously with the movable guide arm 8, and the rubbing assembly includes a horizontal plate 9, and an L-shaped rod 10 is vertically fixed to the end of the horizontal plate 9, and the horizontal rod of the L-shaped rod 10 is located above the gear ring 5, and a rotation groove 11 is provided on the lower surface of the horizontal rod of the L-shaped rod 10, and a shifting block 12 is provided in the rotation groove 11, and the shifting block 12 is hinged in the rotation groove 11 through a torsion spring, and the shifting block 12 can shift the gear ring 5 to rotate;

[0046] In this embodiment, the round bar material 44 is loaded, the end of the round bar material 44 is placed in the ring body 6, and then the fastening bolt 7 is rotated and adjusted so that the axis of the round bar material 44 and the axis of the ring body 6 are placed in a colinear state, and then the bow sawing machine is driven, the movable guide arm 8 drives the cutting saw 13 to move back and forth, and the cutting saw 13 cuts the round bar material 44. At the same time, the movable guide arm 8 drives the rubbing assembly to move, that is, the cross plate 9 drives the L-shaped rod 10 to move back and forth with the movable guide arm 8; During the forward movement of the shaped rod 10, the shifting block 12 will contact the gear ring 5, and the shifting block 12 will shift the gear ring 5 to rotate, and at the same time, the gear ring 5 will drive the round bar material 44 connected to it to rotate. At this time, the round bar material 44 is cut by the cutting saw 13, and the round bar material 44 itself is also rotating. As for the cutting depth on the round bar material 44, it can be achieved by adjusting the lifting component. After cutting for a period of time, a complete circular groove 14 can be cut on the surface of the round bar material 44, and it can accurately fit the hanging ear 15 with a notch;

[0047] Compared with the existing bow saw machines, the bow saw machine designed in this embodiment can rub and rotate the original fixed round bar material 44, so that the round bar material 44 and the cutting saw 13 can cooperate to cut out relatively regular circular grooves 14. At the same time, the processing efficiency is also improved. During the entire sawing process, there is no need to stop the machine to operate the round bar material 44. Furthermore, the number of times that humans come into contact with the running bow saw machine is reduced, thereby improving safety.

[0048] Reference Figure 4 - Fig.10 A recess 16 is provided on the upper surface of the material platform, and a lifting assembly is arranged in the recess 16; the lifting assembly includes two No. 1 screw rods 17, which are rotatably connected to the recess 16, and the two No. 1 screw rods 17 are both transmission-connected with a wedge block 18, and the wedge block 18 is arranged close to the end of the No. 1 screw rod 17; a lifting platform 19 is arranged in the recess 16, and oblique openings 20 are provided on both sides of the lower surface of the lifting platform 19, and the oblique openings 20 are arranged opposite to the wedge block 18; the lifting assembly can realize the round bar material 4 4, so as to adjust the cutting depth of the cutting saw 13, cut evenly, and reduce the possibility of the cutting saw 13 being squeezed and broken; when the lifting assembly is specifically operated, the two No. 1 screws 17 are rotated synchronously, and the No. 1 screws 17 drive the two opposite wedge blocks 18 to gradually approach each other, and at the same time the wedge blocks 18 squeeze the bevel 20 and push the lifting platform 19, and the lifting platform 19 gradually rises, thereby driving the round bar material 44 to gradually rise, and then the cutting depth of the cutting saw 13 is adjusted.

[0049] Reference Figure 6 - Fig.10 A groove 21 is provided on the upper surface of the lifting platform 19, and a buffer platform 22 is arranged in the groove 21. The lower surface of the buffer platform 22 is connected to the surface of the groove 21 by a plurality of springs 23, and a clamping assembly is symmetrically arranged on the upper surface of the buffer platform 22; when the height of the lifting platform 19 is adjusted, if the height adjustment stroke is too large at one time, the extrusion of the round bar material 44 on the cutting saw 13 will be instantly increased, which may cause the bow saw machine to run unstably. In severe cases, the cutting saw 13 is squeezed and broken. In order to avoid the above problems, a buffer platform 22 is provided, and the buffer platform 22 is connected to the lifting platform 19 by a plurality of springs 23. The springs 23 buffer the destructive extrusion of the round bar material 44 on the cutting saw 13, thereby ensuring the stable operation of the bow saw machine.

[0050] Reference Fig.10Each of the clamping components also includes two symmetrically arranged No. 2 screw rods 24, which are vertically rotatably connected to the buffer table 22. The threads on each No. 2 screw rod 24 are half and symmetrically arranged, and two adjacent No. 2 screw rods 24 are transmission-connected to two arc-shaped plates 2 symmetrically arranged up and down; the No. 2 screw rod 24 cooperates with the arrangement of the arc-shaped plate 2 to ensure that the axis of the round bar material 44 and the axis of the gear ring 5 are on the same axis. When the shift block 12 rubs the gear ring 5 to rotate, the gear ring 5 can drive the round bar material 44 to rotate stably, so that when the cutting saw 13 cuts the round bar material 44, each back and forth movement of the cutting saw 13 can cut to the same depth, that is, each back and forth movement of the cutting saw 13 has the same cutting depth, which helps to cut a more regular circular groove 14.

[0051] Reference Fig.11 - Fig.15 , each vertical rod of the L-shaped rod 10 includes a fixed portion 25 and a movable portion 27; the fixed portion 25 is fixed to the lower surface of the end of the horizontal plate 9, and the movable portion 27 is fixed to the horizontal rod of the L-shaped rod 10;

[0052] The fixed portion 25 is provided with a waist-shaped hole 28, and a screw is fixed on the side wall of the movable portion 27. The screw passes through the waist-shaped hole 28 and can be adjusted up and down along the waist-shaped hole 28; the diameters of the round bars 44 are different. For some smaller bars, the lifting height of the lifting platform 19 is limited, so that the cutting saw 13 cannot cut a set depth on the round bars 44. For this reason, a cylinder 30 that can drive the fixed guide arm 29 of the bow saw bed to move up and down is also provided on the bed body 1. The cylinder 30 drives the fixed guide arm 29 to move downward, so that the cutting saw 13 is close to the lifting platform 19. After the downward movement stroke of the fixed guide arm 29 is adjusted, the height of the lifting platform 19 is adjusted; the sizes of the gear ring 5 and the L-shaped rod 10 are fixed values. When the guide arm 29 is fixed, the L-shaped rod 10 will also move downward, causing the L-shaped rod 10 to be rigidly squeezed with the gear ring 5. For this reason, the L-shaped rod 10 is configured to have a structure with flexible adjustable size; by dividing the vertical rod of the L-shaped rod 10 into a fixed portion 25 and a movable portion 27, the movable portion 27 can move up and down along the fixed portion 25; when the fixed guide arm 29 moves downward, the movable portion 27 moves upward, and after moving upward, the screw rod cooperates with the nut to fix the movable portion 27 on the fixed portion 25; when the fixed guide arm 29 moves upward, the movable portion 27 moves downward, and after moving downward, the screw rod cooperates with the nut to fix the movable portion 27 on the fixed portion 25, thereby ensuring that the distance between the horizontal rod of the L-shaped rod 10 and the gear ring 5 remains unchanged, so that the shift block 12 can effectively touch the gear ring 5.

[0053] Reference Fig.11 - Fig.16The lower surface of the transverse fixed guide arm 29 of the bed body 1 is provided with a touch valve 31, and the oil inlet 39 of the touch valve 31 is connected to the external oil pump through a hose 32. When the bow sawing machine is running, the external oil pump also runs accordingly, and the external oil pump is a small oil pump; the oil outlet 40 of the touch valve 31 is connected to the hollow guide rod 33 through an oil pipe, and the movable guide arm 8 can reciprocate along the guide rod 33. A plurality of oil holes 34 are arranged on the surface of the guide rod 33, and a touch block 35 is arranged on the end surface of the movable guide arm 8, and the touch block 35 can contact the touch valve 31;

[0054] The touch valve 31 includes a valve body 36, in which a touch head 37 connected to a compression spring is arranged, and a through hole 38 is arranged at the inner end of the touch head 37, and the through hole 38 can connect the oil inlet 39 and the oil outlet 40 of the valve body 36; after the bow saw machine has been running for a period of time, it is necessary to replenish oil and lubricate between the guide rod 33 and the movable guide arm 8. The existing bow saw machine oil replenishment method requires that the bow saw machine can only be replenished when the bow saw machine is stopped, and the oil replenishment interval is uncertain. For this reason, an automatic oil replenishment touch valve 31 is provided in this embodiment, and the touch valve 31 cooperates with the movable guide arm 8 to execute, that is, when the bow saw machine is running, the lubricating oil will be automatically replenished to the guide rod 3 3 is connected to the movable guide arm 8; when the movable guide arm 8 moves backward, the touch block 35 on the movable guide arm 8 squeezes the touch head 37, and the touch head 37 moves backward into the valve body 36. At the same time, the through hole 38 on the touch head 37 connects the oil inlet 39 and the oil outlet 40. The lubricating oil flows along the hose 32, the oil inlet 39, the through hole 38, the oil outlet 40 and the hollow guide rod 33 in sequence, and is finally discharged from the oil hole 34 and spreads between the guide rod 33 and the movable guide arm 8, thereby realizing oil replenishment and lubrication. In addition, the oil replenishment and lubrication method is replenished as the bow saw machine is running, and the oil replenishment is performed in real time to ensure the stable operation of the bow saw machine.

[0055] Reference Fig.13 - Fig.14 A plurality of oil passages are provided inside the movable guide arm 8, and the oil passages extend to the middle position of the bottom of the movable guide arm 8, and an oil guide pipe 41 is provided at the oil drain hole position of the oil passage; the oil replenishing lubrication mode provided enables the lubricating oil to be replenished at all times, and excess lubricating oil will drip from the movable guide arm 8. Even if there is excess lubricating oil, continuous oil supply is required to ensure the stable operation of the bow saw machine, and the excess lubricating oil will be discharged from the oil drain hole. An oil guide pipe 41 is provided at the oil drain hole position, and the oil guide pipe 41 guides the lubricating oil discharged from the oil drain hole away from the bow saw machine for recycling and reuse, so as to prevent excess lubricating oil from dripping onto the bed body 1 and contaminating the bed body 1.

[0056] Reference Figure 8 - Fig.10, the vertical side walls on both sides of the recess 16 and the groove 21 are provided with limit grooves 42, and the two sides of the lifting platform 19 and the buffer platform 22 are provided with limit blocks 43 adapted to the limit grooves 42, and the limit blocks 43 are slidably connected in the limit grooves 42 up and down; through the cooperation between the limit grooves 42 and the limit blocks 43, the lifting platform 19 and the buffer platform 22 can move up and down stably, and at the same time, the stability of the round bar material 44 can also be improved.

[0057] Reference Figure 8 , a plurality of balls 26 are rotatably connected to the surface of each wedge block 18 opposite to the bevel 20; the balls 26 are arranged so that when the wedge block 18 and the bevel 20 are squeezed, the surface of the bevel 20 will squeeze the balls 26 on the wedge block 18, that is, the sliding friction between the wedge block 18 and the bevel 20 is converted into rolling friction between the balls 26 and the bevel 20, thereby reducing resistance and improving the stability of the lifting platform 19 when it is lifted up and down.

[0058] Reference Fig.15 A scale 45 is set on the side wall of the fixed part 25, and a pointer is set on the side wall of the movable part 27; by setting the scale 45 and the pointer, and then measuring the diameter of the round bar material 44, it can be quickly adapted to the up and down movement stroke of the movable part 27, so that the pointer is aligned with the corresponding scale 45, which is convenient and quick.

[0059] Working principle: In this embodiment, the round bar material 44 is loaded, the end of the round bar material 44 is placed in the ring body 6, and then the fastening bolt 7 is rotated and adjusted so that the axis of the round bar material 44 and the axis of the ring body 6 are placed in a colinear state, and then the bow saw is driven, the movable guide arm 8 drives the cutting saw 13 to move back and forth, and the cutting saw 13 cuts the round bar material 44. At the same time, the movable guide arm 8 drives the rubbing assembly to move, that is, the cross plate 9 drives the L-shaped rod 10 to move back and forth with the movable guide arm 8. When the L-shaped rod 10 moves forward, the shifting block 12 will contact the gear ring 5, and the shifting block 12 will shift the gear ring 5 to rotate, and at the same time, the gear ring 5 will drive the round bar material 44 connected to it to rotate. At this time, the round bar material 44 is being cut by the cutting saw 13, and the round bar material 44 itself is also rotating. As for the cutting depth on the round bar material 44, it can be achieved by adjusting the lifting assembly. After cutting for a period of time, a complete circular groove 14 can be cut on the surface of the round bar material 44, and it can accurately fit the hanging ear 15 with a notch;

[0060] Compared with the existing bow saw machine, the bow saw machine designed in this embodiment can rotate the original fixed round bar material 44, so that the round bar material 44 and the cutting saw 13 can cooperate to cut a relatively regular circular groove 14, and at the same time, the processing efficiency is also improved. During the entire sawing process, there is no need to stop the machine to operate the round bar material 44, and the number of times that manual labor contacts the bow saw machine in operation is reduced, thereby improving safety.

[0061] The lifting assembly can adjust the height of the round bar material 44, thereby adjusting the cutting depth of the cutting saw 13, cutting evenly, and reducing the possibility of the cutting saw 13 being squeezed and broken; when the lifting assembly is specifically operated, the two No. 1 screws 17 are rotated synchronously, and the No. 1 screws 17 drive the two opposite wedge blocks 18 to gradually approach each other, and at the same time the wedge blocks 18 squeeze the bevel 20 and push the lifting platform 19, and the lifting platform 19 gradually rises, thereby driving the round bar material 44 to gradually rise, and then the cutting depth of the cutting saw 13 can be adjusted;

[0062] When adjusting the height of the lifting platform 19, if the height adjustment stroke is too large at one time, the squeezing of the round bar material 44 on the cutting saw 13 will be instantly increased, which may cause the bow saw machine to run unstably. In serious cases, the cutting saw 13 is squeezed and broken. In order to avoid the above problem, a buffer platform 22 is provided. The buffer platform 22 is connected to the lifting platform 19 through a plurality of springs 23. The springs 23 buffer the destructive squeezing of the round bar material 44 on the cutting saw 13, thereby ensuring the stable operation of the bow saw machine.

[0063] The second screw rod 24 cooperates with the arrangement of the arc plate 2 to ensure that the axis of the round bar material 44 and the axis of the gear ring 5 are on the same axis. When the shift block 12 rubs the gear ring 5 to rotate, the gear ring 5 can drive the round bar material 44 to rotate stably, so that when the cutting saw 13 cuts the round bar material 44, each back and forth movement of the cutting saw 13 can cut to the same depth, that is, each back and forth movement of the cutting saw 13 has the same cutting depth, which helps to cut a more regular circular groove 14;

[0064] The diameters of the round bars 44 vary. For some smaller bars, the lifting height of the lifting platform 19 is limited, so that the cutting saw 13 cannot cut the set depth on the round bars 44. For this reason, a cylinder 30 capable of driving the fixed guide arm 29 of the bow saw bed to move up and down is also provided on the bed body 1. The cylinder 30 drives the fixed guide arm 29 to move downward, so that the cutting saw 13 is close to the lifting platform 19. After the downward stroke of the fixed guide arm 29 is adjusted, the height of the lifting platform 19 is adjusted. The sizes of the gear ring 5 and the L-shaped rod 10 are fixed values. When the fixed guide arm 29 is moved downward, the L-shaped rod 10 will also move downward, causing the L-shaped rod 10 to be close to the gear ring 5. In order to prevent the occurrence of hard extrusion, the L-shaped rod 10 is set to a structure with flexible size adjustment; by dividing the vertical rod of the L-shaped rod 10 into a fixed portion 25 and a movable portion 27, the movable portion 27 can move up and down along the fixed portion 25; when the fixed guide arm 29 moves down, the movable portion 27 moves up, and after moving up, the screw rod cooperates with the nut to fix the movable portion 27 on the fixed portion 25; when the fixed guide arm 29 moves up, the movable portion 27 moves down, and after moving down, the screw rod cooperates with the nut to fix the movable portion 27 on the fixed portion 25, thereby ensuring that the distance between the horizontal rod of the L-shaped rod 10 and the gear ring 5 remains unchanged, so that the shift block 12 can effectively touch the gear ring 5;

[0065] After the bow saw machine has been running for a period of time, it is necessary to replenish oil and lubricate between the guide rod 33 and the movable guide arm 8. The existing bow saw machine oil replenishment method requires that the bow saw machine be stopped before oil replenishment, and the oil replenishment interval is uncertain. For this reason, the present embodiment is provided with an automatic oil replenishment trigger valve 31, which cooperates with the movable guide arm 8 to execute, that is, when the bow saw machine is running, the lubricating oil will be automatically replenished to the connection position between the guide rod 33 and the movable guide arm 8; when the rear side of the movable guide arm 8 moves, the touch block 35 on the movable guide arm 8 squeezes The touch head 37 is pressed, and the rear side of the touch head 37 moves into the valve body 36. At the same time, the through hole 38 on the touch head 37 connects the oil inlet 39 and the oil outlet 40. The lubricating oil flows along the hose 32, the oil inlet 39, the through hole 38, the oil outlet 40 and the hollow guide rod 33 in sequence, and finally is discharged from the oil hole 34 and spreads between the guide rod 33 and the movable guide arm 8, so as to realize oil replenishment and lubrication. Moreover, the oil replenishment and lubrication mode is replenished as the bow saw machine is running, and the oil replenishment is performed in real time to ensure the stable operation of the bow saw machine.

[0066] The oil replenishing lubrication method is set so that the lubricating oil is replenished all the time, and there will be excess lubricating oil dripping from the movable guide arm 8. Even if there is excess lubricating oil, in order to ensure the stable operation of the bow saw machine, it is still necessary to continue to supply oil, and the excess lubricating oil will be discharged from the oil drain hole. An oil guide pipe 41 is set at the position of the oil drain hole. The oil guide pipe 41 guides the lubricating oil discharged from the oil drain hole to be discharged away from the bow saw machine for recycling and reuse, so as to prevent the excess lubricating oil from dripping on the bed body 1 and contaminating the bed body 1;

[0067] Through the cooperation of the limit groove 42 and the limit block 43, the lifting platform 19 and the buffer platform 22 can both move up and down stably, and at the same time, the stability of the round bar material 44 can be improved; the ball 26 is arranged, and when the wedge block 18 and the bevel 20 are squeezed, the surface of the bevel 20 will squeeze the ball 26 on the wedge block 18, that is, the sliding friction between the wedge block 18 and the bevel 20 is converted into rolling friction between the ball 26 and the bevel 20, thereby reducing the resistance and improving the stability of the lifting platform 19 when lifting up and down.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bow saw machine, comprising a bed (1); characterized in that: The material platform of the bed (1) is provided with a lifting component, which can adjust the height of the material up and down; the lifting component is symmetrically provided with a clamping component, which is used to fix the material on the lifting component, and the clamping component is provided with a connection structure; The clamping assembly comprises two groups of arc-shaped plates (2) capable of clamping materials, the inner ring of the arc-shaped plates (2) is provided with an arc-shaped groove (3), a plurality of roller bodies (4) are rotatably connected in the arc-shaped groove (3), and the materials are rotatably connected to the inside of two adjacent arc-shaped plates (2) through the roller bodies (4); The connection structure is located outside the clamping assembly, and comprises a toothed ring (5), one end face of the toothed ring (5) is fixedly connected to a ring body (6), the outer ring of the ring body (6) is threadedly connected to a plurality of fastening bolts (7), and the fastening bolts (7) are capable of fastening the end of the material to the toothed ring (5); The movable guide arm (8) of the bed body (1) is provided with a rubbing assembly on both sides, and the rubbing assembly can move back and forth synchronously with the movable guide arm (8), and the rubbing assembly includes a horizontal plate (9), and an L-shaped rod (10) is vertically fixed to the end of the horizontal plate (9), and the horizontal rod of the L-shaped rod (10) is located above the gear ring (5), and a rotation groove (11) is provided on the lower surface of the horizontal rod of the L-shaped rod (10), and a shifting block (12) is provided in the rotation groove (11), and the shifting block (12) is hinged in the rotation groove (11) through a torsion spring, and the shifting block (12) can shift the gear ring (5) to rotate; A recess (16) is provided on the upper surface of the material platform, and a lifting assembly is arranged in the recess (16); the lifting assembly comprises two No. 1 screw rods (17), the two No. 1 screw rods (17) are rotatably connected in the recess (16), and the two No. 1 screw rods (17) are both transmission-connected with a wedge block (18), and the wedge block (18) is arranged close to the end of the No. 1 screw rod (17); a lifting platform (19) is arranged in the recess (16), and oblique openings (20) are provided on both sides of the lower surface of the lifting platform (19), and the oblique openings (20) are arranged opposite to the wedge block (18); The upper surface of the lifting platform (19) is provided with a groove (21), a buffer platform (22) is arranged in the groove (21), the lower surface of the buffer platform (22) is connected to the surface of the groove (21) via a plurality of springs (23), and a clamping assembly is symmetrically arranged on the upper surface of the buffer platform (22); Each of the clamping assemblies further comprises two symmetrically arranged No. 2 screw rods (24), the No. 2 screw rods (24) being vertically rotatably connected to the buffer platform (22), the threads on each No. 2 screw rod (24) being halved and symmetrically arranged, and two adjacent No. 2 screw rods (24) being transmission-connected to two arc-shaped plates (2) symmetrically arranged up and down; The vertical rod of each L-shaped rod (10) comprises a fixed portion (25) and a movable portion (27); the fixed portion (25) is fixed to the lower surface of the end of the horizontal plate (9), and the movable portion (27) is fixed to the horizontal rod of the L-shaped rod (10); The fixed portion (25) is provided with a waist-shaped hole (28), and a screw is fixedly connected to the side wall of the movable portion (27). The screw passes through the waist-shaped hole (28) and can be adjusted up and down along the waist-shaped hole (28).

2. A hacksaw according to claim 1, characterized in that: A touch valve (31) is provided on the lower surface of the transverse fixed guide arm (29) of the bed body (1); an oil inlet (39) of the touch valve (31) is connected to an external oil pump via a hose (32); an oil outlet (40) of the touch valve (31) is connected to a hollow guide rod (33) via an oil pipe; the movable guide arm (8) can reciprocate along the guide rod (33); a plurality of oil holes (34) are provided on the surface of the guide rod (33); a touch block (35) is provided on the end surface of the movable guide arm (8); and the touch block (35) can contact the touch valve (31); The touch valve (31) comprises a valve body (36), wherein a touch head (37) connected to a compression spring is arranged inside the valve body (36), a through hole (38) is provided at the inner end of the touch head (37), and the through hole (38) can communicate with an oil inlet (39) and an oil outlet (40) of the valve body (36).

3. A hacksaw according to claim 2, characterized in that: A plurality of oil passages are provided inside the movable guide arm (8), the oil passages extending to the middle position of the bottom of the movable guide arm (8), and an oil guide pipe (41) is provided at the oil discharge hole position of the oil passage.

4. A hacksaw according to claim 1, characterized in that: Limiting grooves (42) are provided on both vertical side walls of the concave portion (16) and the groove (21), and limiting blocks (43) matching the limiting grooves (42) are provided on both sides of the lifting platform (19) and the buffer platform (22), and the limiting blocks (43) are slidably connected in the limiting grooves (42) up and down.

5. A hacksaw according to claim 1, characterized in that: A plurality of balls (26) are rotatably connected to the surface of each wedge block (18) opposite to the oblique opening (20).

6. A hacksaw according to claim 1, characterized in that: A scale (45) is provided on the side wall of the fixed portion (25), and a pointer is provided on the side wall of the movable portion (27).

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