Band sawing machine with saw blade stabilizing structure

Abstract

The utility model belongs to the technical field of metal band sawing machines, and particularly relates to a band sawing machine with a saw blade stabilizing structure, which comprises a saw frame, a sliding seat, a movable seat, a horizontal driving mechanism and a fine adjustment mechanism, a driving belt wheel and an adjusting belt wheel are arranged on the saw frame, and the same saw blade is sleeved on the driving belt wheel and the adjusting belt wheel. A guide seat for guiding the saw blade is arranged on the saw frame; the sliding seat is slidably arranged on the saw frame in the circle center connecting line direction of the driving belt wheel and the adjusting belt wheel. The movable seat is arranged on the side, close to the driving belt wheel, of the sliding seat, and the adjusting belt wheel is arranged on the movable seat. The horizontal driving mechanism is used for driving the sliding seat to slide on the saw frame; the fine adjustment mechanism is used for finely adjusting the distance between the movable seat and the sliding seat; compared with the prior art, the band sawing machine has the advantages that in the process of adjusting the tensioning degree of the saw blade, the rapid adjusting stage and the fine adjusting stage are included, the adjusting efficiency can be improved in the rapid adjusting stage, the tensioning accuracy of the saw blade can be improved in the fine adjusting stage, and the saw blade is prevented from being expanded too tightly.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal band sawing machines, and in particular relates to a band sawing machine with a saw blade stabilizing structure. Background Art

[0002] As a processing equipment for sawing metal bars, metal band saws have the advantages of energy saving, high efficiency, material saving, low cost and good safety. They can conveniently saw block materials and are favored by customers in the mechanical processing industry. Generally, metal band saws include a base, a ring saw blade, a saw blade transmission mechanism, a guide component and a workpiece clamping component. The ring saw blade is tensioned on the saw blade transmission mechanism and is driven by the saw blade transmission mechanism to achieve longitudinal feeding. The longitudinal feeding is achieved by the feed cylinder driving the support frame.

[0003] The saw blade of a band saw tends to become loose after being used for a period of time, and the saw blade needs to be tensioned and adjusted. In the prior art, a Chinese patent document with publication number: CN109822159A discloses a new type of band saw, in which a tensioning wheel is arranged at the saw blade to adjust the tension of the saw blade. However, this adjustment method increases the friction between the saw blade and the tensioning wheel, which aggravates the wear of the saw blade, thereby shortening the service life of the saw blade.

[0004] Based on the above-mentioned new band saw technology, a Chinese patent document with publication number: CN218836312U discloses a band saw that is convenient for adjusting the tightness of a saw blade. In this technology, the saw blade is driven by a driving pulley and an adjusting pulley, and the tension of the saw blade is adjusted by designing the adjusting pulley to be adjustable in horizontal position. However, in this technology, the position adjustment method of the adjusting pulley is driven by a cylinder. Although the cylinder drive is efficient, the adjustment accuracy is difficult to guarantee. The saw blade may be expanded too tight, which will also shorten the service life of the saw blade. Therefore, there is still room for improvement in the adjustment of the tension of the saw blade. Utility Model Content

[0005] The purpose of the utility model is to provide a band saw with a saw blade stabilizing structure in order to solve the above-mentioned technical problems. The band saw includes a rapid adjustment stage and a fine adjustment stage in the process of adjusting the tension of the saw blade. The rapid adjustment stage can improve the adjustment efficiency, and the fine adjustment stage can improve the accuracy of the saw blade tensioning to avoid the saw blade being expanded too tight.

[0006] In view of this, the utility model provides a band sawing machine with a saw blade stabilizing structure, comprising:

[0007] A saw frame, wherein a driving pulley and an adjusting pulley are provided on the saw frame, a same saw blade is sleeved on the driving pulley and the adjusting pulley, and a guide seat for guiding the saw blade is provided on the saw frame;

[0008] A sliding seat is arranged on the saw frame so as to slide along the direction of the line connecting the centers of the driving pulley and the adjusting pulley;

[0009] A movable seat, which is arranged on a side of the sliding seat close to the driving pulley, and an adjusting pulley is arranged on the movable seat;

[0010] A horizontal driving mechanism, the horizontal driving mechanism is used to drive the sliding seat to slide on the saw frame;

[0011] The fine-tuning mechanism is used to fine-tune the distance between the movable seat and the sliding seat.

[0012] In the present technical solution, during the saw blade installation process, the sliding seat can be first driven close to the driving pulley by the horizontal driving mechanism. During the movement of the sliding seat, the movable seat will move together to reduce the distance between the driving pulley and the adjusting pulley, which is beneficial to the installation of the saw blade. After the saw blade is put on the driving pulley and the adjusting pulley, the sliding seat is driven away from the driving pulley by the horizontal driving mechanism. When the saw blade tends to be tensioned, the distance between the movable seat and the sliding seat is slowly adjusted by the fine-tuning mechanism, so that the saw blade is slowly tensioned to an appropriate degree. After the saw blade becomes loose after being used for a period of time, the saw blade can also be tensioned to an appropriate degree by the above method.

[0013] In the above technical solution, further, the horizontal driving mechanism includes:

[0014] A rack, which is arranged on the sliding seat along the sliding direction of the sliding seat;

[0015] Gear, the gear is arranged on one side of the rack, and the gear is meshed and connected with the rack;

[0016] Motor: The motor is used to drive the gears to rotate.

[0017] In the above technical solution, further, the horizontal driving mechanism also includes:

[0018] A longitudinal shift groove is provided on the saw frame and is located on one side of the gear;

[0019] A longitudinal movement block is arranged in the longitudinal movement groove for sliding along the radial direction of the gear;

[0020] A locking block is arranged on the longitudinal moving block, and a locking tooth set is arranged on one side of the locking block close to the gear, and the locking tooth set can mesh with the gear.

[0021] In the above technical solution, further, the fine-tuning mechanism includes:

[0022] A threaded hole is provided on the sliding seat along the sliding direction of the sliding seat;

[0023] A screw rod, the screw rod is threadedly connected to the threaded hole, and a first end of the screw rod is rotatably connected to the movable seat;

[0024] The guide rod is arranged on the movable seat, the length direction of the guide rod is the same as the sliding direction of the sliding seat, and the guide rod is slidably connected with the sliding seat along the axial direction.

[0025] In the above technical solution, further, a driving rod perpendicular to the screw is provided on one side of the screw, the first end of the driving rod passes through the inner wall of the saw frame and extends to the outside of the saw frame, and the second end of the screw is connected to the second end of the driving rod through a bevel gear set.

[0026] In the above technical solution, further, a translation groove is provided on the saw frame, a translation block is provided on the sliding seat, and the translation block is slidably arranged in the translation groove.

[0027] The beneficial effects of the utility model are:

[0028] 1. Through the cooperation of the sliding seat and the horizontal driving mechanism, the distance between the driving pulley and the adjusting pulley can be quickly adjusted. Through the cooperation of the sliding seat, the movable seat and the fine-tuning mechanism, the distance between the driving pulley and the adjusting pulley can be adjusted. The combination of the two can efficiently and accurately control the tension of the saw blade.

[0029] 2. The sliding seat is driven to move by the rack, gear and motor. At the same time, the longitudinal movement groove, longitudinal movement block, locking block and locking tooth group are arranged. After the sliding seat moves to the appropriate position, the locking tooth group meshes with the gear to lock the gear, thereby ensuring that the sliding seat will not be shifted, thereby ensuring the stability of the band saw working process.

[0030] 3. Through the cooperation of threaded holes, screws, guide rods, drive rods, and bevel gear sets, the distance between the movable seat and the sliding seat can be indirectly fine-tuned by applying force to the drive rod outside the saw frame, and the screw and threaded holes have a good self-locking effect. When there is no external force driving, the distance between the movable seat and the sliding seat can be fixed, ensuring the stability of the working process of the band saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a schematic diagram of the front three-dimensional structure of the utility model.

[0033] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the utility model.

[0034] Figure 3 It is a rear view structural schematic diagram of the utility model.

[0035] Figure 4 It is a schematic diagram of the front three-dimensional structure of the utility model after the housing and the saw blade are hidden.

[0036] Figure 5 It is a front view structural schematic diagram of the utility model after the housing and the saw blade are hidden.

[0037] Figure 6 for Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0038] The symbols in the figure are:

[0039] 1. Saw frame; 2. Driving pulley; 3. Adjusting pulley; 4. Saw blade; 5. Guide seat; 6. Sliding seat; 7. Movable seat; 8. Horizontal driving mechanism; 801. Rack; 802. Gear; 803. Motor; 9. Longitudinal moving groove; 10. Longitudinal moving block; 11. Locking block; 12. Fine adjustment mechanism; 1201. Threaded hole; 1202. Screw rod; 1203. Guide rod; 1204. Driving rod; 13. Bevel gear set; 14. Translation groove; 15. Translation block; DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the utility model, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] Band saw

[0043] The band saw includes a base, a saw frame 1, a saw blade 4 arranged on the saw frame 1, a driving mechanism for driving the saw blade 4 to move, a guiding mechanism for guiding the saw blade 4, a lifting mechanism for driving the saw frame 1 to rise and fall relative to the base, and a clamping mechanism arranged on the base for clamping a workpiece; the utility model mainly improves the driving mechanism for driving the saw blade 4 to move, and the specific structures of the base, saw frame 1, saw blade 4, guiding mechanism, lifting mechanism, and clamping mechanism are well known to those skilled in the art, so the entire structure of the band saw is not described in the following embodiments.

[0044] Example 1

[0045] like Figure 1-Figure 5 As shown, this embodiment provides a band sawing machine with a saw blade stabilizing structure, including: a saw frame 1, a driving pulley 2, an adjusting pulley 3, a saw blade 4, a guide seat 5, a sliding seat 6, a movable seat 7, a horizontal driving mechanism 8, a fine adjustment mechanism 12,

[0046] The saw frame 1 is provided with a driving pulley 2 and an adjusting pulley 3, on which the same saw blade 4 is sleeved, and the saw frame 1 is provided with a guide seat 5 for guiding the saw blade 4; see Figure 1 In order to protect these components on the saw frame 1, a shell is provided on the saw frame 1 to cover the above components, and the shell is detachably connected to the saw frame 1;

[0047] The sliding seat 6 is L-shaped as a whole, and the sliding seat 6 is slidably arranged on the saw frame 1 along the direction of the line connecting the centers of the driving pulley 2 and the adjusting pulley 3. Figure 2 A translation groove 14 is provided on the saw frame 1, and a translation block 15 is provided on the sliding seat 6. The translation block 15 is slidably arranged in the translation groove 14;

[0048] The movable seat 7 is arranged on a side of the sliding seat 6 close to the driving pulley 2. The movable seat 7 includes a connecting part and a mounting part. The adjusting pulley 3 is arranged on the mounting part of the movable seat 7.

[0049] The horizontal driving mechanism 8 is used to drive the sliding seat 6 to slide on the saw frame 1;

[0050] The fine-tuning mechanism 12 is used to fine-tune the distance between the movable seat 7 and the sliding seat 6;

[0051] In the present embodiment, during the installation of the saw blade 4, the sliding seat 6 can be first driven by the horizontal driving mechanism 8 to approach the driving pulley 2. During the movement of the sliding seat 6, the movable seat 7 will move together to reduce the distance between the driving pulley 2 and the adjusting pulley 3, which is beneficial to the installation of the saw blade 4. After the saw blade 4 is sleeved on the driving pulley 2 and the adjusting pulley 3, the sliding seat 6 is driven away from the driving pulley 2 by the horizontal driving mechanism 8. When the saw blade 4 tends to be tightened, the distance between the movable seat 7 and the sliding seat 6 is slowly adjusted by the fine-tuning mechanism 12, so that the saw blade 4 is slowly tightened to a suitable degree. After the saw blade 4 is loosened after being used for a period of time, the saw blade 4 can also be tightened to a suitable degree by the above method.

[0052] This embodiment combines the rapid adjustment of the horizontal drive mechanism 8 with the slow adjustment of the fine-tuning mechanism 12, so that the saw blade 4 can be tightened to an appropriate degree with high efficiency; it should be noted that the rapid adjustment and slow adjustment in this embodiment are relative. In order to ensure the rationality of the tensioning adjustment of the saw blade 4, the rapid adjustment of the horizontal drive mechanism 8 needs to be controlled within a certain range, and this range can be obtained through actual experiments by technicians.

[0053] Example 2

[0054] This embodiment provides a band sawing machine with a saw blade stabilizing structure. In addition to the technical solutions of the above embodiments, a structure of a horizontal driving mechanism 8 is also disclosed.

[0055] See also Figure 4-Figure 5 In this embodiment, the horizontal driving mechanism 8 includes: a rack 801, a gear 802, a motor 803,

[0056] For details, please refer to Figure 6 , the rack 801 is fixed on the sliding seat 6 along the sliding direction of the sliding seat 6; the gear 802 is arranged on one side of the rack 801, and the gear 802 is meshed and connected with the rack 801; the motor 803 is arranged on the back of the saw frame 1, and the output shaft of the motor 803 passes through the outer wall of the saw frame 1 and is coaxially connected with the gear 802, so as to drive the gear 802 to rotate;

[0057] In this embodiment, the motor 803 can be a servo motor 803 or a reduction motor 803. The motor 803 starts to drive the gear 802 to rotate. During the rotation of the gear 802, the rack 801 is driven to move along the length direction. During the movement of the rack 801, the sliding seat 6 is moved.

[0058] Example 3

[0059] This embodiment provides a band sawing machine with a saw blade stabilizing structure. Based on the second embodiment, the following technical features are also disclosed:

[0060] See also Figure 5 In this embodiment, the horizontal driving mechanism 8 further includes: a longitudinal moving slot 9, a longitudinal moving block 10, a locking block 11,

[0061] The longitudinal shift slot 9 is formed on the saw frame 1 and is located on one side of the gear 802;

[0062] The longitudinal movement block 10 is arranged in the longitudinal movement groove 9 for sliding along the radial direction of the gear 802;

[0063] The locking block 11 is disposed on the longitudinal moving block 10. A locking tooth set is disposed on one side of the locking block 11 close to the gear 802. The locking tooth set can mesh with the gear 802.

[0064] In this embodiment, the longitudinal movement block 10 slides in the longitudinal movement slot 9, and the locking block 11 can be brought closer to and away from the gear 802, so that the locking tooth set is engaged with and separated from the gear 802;

[0065] When the locking tooth set is meshed with the gear 802, the rotation of the gear 802 can be restricted, and the sliding seat 6 cannot move at this time. This state is suitable for situations other than the rapid adjustment stage of the position of the adjustment pulley 3;

[0066] When the locking tooth set is separated from the gear 802 , the rotation of the gear 802 is not affected. At this time, the sliding seat 6 can be driven to move. This state is suitable for the stage of rapid adjustment of the position of the adjustment pulley 3 .

[0067] Example 4

[0068] This embodiment provides a band sawing machine with a saw blade stabilizing structure. In addition to the technical solutions of the above embodiments, a structure of a fine-tuning mechanism 12 is also disclosed.

[0069] See also Figure 5 In this embodiment, the fine-tuning mechanism 12 includes: a threaded hole 1201, a screw rod 1202, and a guide rod 1203.

[0070] The threaded hole 1201 is formed on the sliding seat 6 along the sliding direction of the sliding seat 6;

[0071] The screw rod 1202 is threadedly connected to the threaded hole 1201, and the first end of the screw rod 1202 is rotatably connected to the connecting part of the movable seat 7;

[0072] The guide rod 1203 is arranged on the movable seat 7, the length direction of the guide rod 1203 is the same as the sliding direction of the sliding seat 6, and the guide rod 1203 is slidably connected with the sliding seat 6 along the axial direction;

[0073] By driving the screw 1202 to rotate, the distance between the movable seat 7 and the sliding seat 6 can be adjusted. The screw 1202 and the threaded hole 1201 have a small pitch. During the rotation of the screw 1202, the speed at which the screw 1202 moves along the axial direction is slow, so the distance between the movable seat 7 and the sliding seat 6 can be slowly adjusted to achieve the most suitable distance between the movable seat 7 and the sliding seat 6.

[0074] In addition, the fine-tuning mechanism 12 in this embodiment further includes a driving rod 1204 and a bevel gear 802 group.

[0075] Specifically, a driving rod 1204 perpendicular to the screw rod 1202 is provided on one side of the screw rod 1202, a first end of the driving rod 1204 penetrates the inner wall of the saw frame 1 and then extends to the outside of the saw frame 1, and a second end of the screw rod 1202 is connected to a second end of the driving rod 1204 through a bevel gear 802 group; in this way, a technician applies a torque to the driving rod 1204 outside the saw frame 1, and can drive the screw rod 1202 to rotate, thereby fine-tuning the spacing between the movable seat 7 and the sliding seat 6;

[0076] In this embodiment, a connecting frame (not shown in the figure) and two bevel gears 802 are provided in the bevel gear 802 group. The two bevel gears 802 are respectively arranged at the second end of the driving rod 1204 and the screw rod 1202. The connecting frame is used to connect the two bevel gears 802 so that during the movement of the sliding seat 6, the driving rod 1204 can follow the movement of the screw rod 1202.

[0077] The embodiments of the utility model are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A band sawing machine with a saw blade stabilizing structure, characterized in that: include: A saw frame (1), wherein the saw frame (1) is provided with a driving pulley (2) and an adjusting pulley (3), the driving pulley (2) and the adjusting pulley (3) are sleeved with a same saw blade (4), and the saw frame (1) is provided with a guide seat (5) for guiding the saw blade (4); A sliding seat (6), the sliding seat (6) being slidably arranged on the saw frame (1) along the direction of the line connecting the centers of the driving pulley (2) and the adjusting pulley (3); A movable seat (7), wherein the movable seat (7) is arranged on a side of the sliding seat (6) close to the driving pulley (2), and the adjusting pulley (3) is arranged on the movable seat (7); A horizontal driving mechanism (8), the horizontal driving mechanism (8) being used for driving the sliding seat (6) to slide on the saw frame (1); A fine-adjustment mechanism (12), wherein the fine-adjustment mechanism (12) is used to fine-adjust the distance between the movable seat (7) and the sliding seat (6).

2. A band sawing machine with a saw blade stabilizing structure according to claim 1, characterized in that: The horizontal driving mechanism (8) comprises: A rack (801), wherein the rack (801) is arranged on the sliding seat (6) along the sliding direction of the sliding seat (6); A gear (802), the gear (802) being disposed on one side of the rack (801), the gear (802) being meshedly connected with the rack (801); A motor (803), wherein the motor (803) is used to drive the gear (802) to rotate.

3. A band sawing machine with a saw blade stabilizing structure according to claim 2, characterized in that: The horizontal driving mechanism (8) further comprises: A longitudinal shift groove (9), the longitudinal shift groove (9) being formed on the saw frame (1) and located on one side of the gear (802); A longitudinal movement block (10), the longitudinal movement block (10) being arranged in the longitudinal movement groove (9) for sliding along the radial direction of the gear (802); A locking block (11), wherein the locking block (11) is arranged on the longitudinal movement block (10), and a locking tooth group is arranged on a side of the locking block (11) close to the gear (802), and the locking tooth group can mesh with the gear (802).

4. The band sawing machine with a saw blade stabilizing structure according to claim 1, characterized in that: The fine adjustment mechanism (12) comprises: a threaded hole (1201), the threaded hole (1201) being opened on the sliding seat (6) along the sliding direction of the sliding seat (6); A screw rod (1202), wherein the screw rod (1202) is threadedly connected to the threaded hole (1201), and a first end of the screw rod (1202) is rotatably connected to the movable seat (7); A guide rod (1203), wherein the guide rod (1203) is arranged on the movable seat (7), the length direction of the guide rod (1203) is the same as the sliding direction of the sliding seat (6), and the guide rod (1203) is slidably connected to the sliding seat (6) along the axial direction.

5. The band sawing machine with a saw blade stabilizing structure according to claim 4, characterized in that: A driving rod (1204) perpendicular to the screw rod (1202) is provided on one side of the screw rod (1202); the first end of the driving rod (1204) passes through the inner wall of the saw frame (1) and extends to the outside of the saw frame (1); the second end of the screw rod (1202) is connected to the second end of the driving rod (1204) through a bevel gear (802) group.

6. The band sawing machine with a saw blade stabilizing structure according to claim 1, characterized in that: The saw frame (1) is provided with a translation groove (14), the sliding seat (6) is provided with a translation block (15), and the translation block (15) is slidably arranged in the translation groove (14).

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