A reciprocating band saw cutting device

Abstract

The present invention provides a reciprocating band saw cutting device, belonging to the technical field of cutting equipment. It includes a frame, a workbench, a band saw, a new band saw wheel, a waste band saw wheel, a driving motor, a first clamping wheel, a second clamping wheel and a reciprocating motion unit; the new band saw wheel, the waste band saw wheel, the first clamping wheel and the second clamping wheel are all arranged on the workbench, the driving motor is in transmission connection with the waste band saw wheel, one end of the band saw is wound around the new band saw wheel, the other end of the band saw sequentially bypasses the first clamping wheel and the second clamping wheel and is wound around the waste band saw wheel; the reciprocating motion unit is in transmission connection with the first clamping wheel and the second clamping wheel, and clamping devices are arranged on both the first clamping wheel and the second clamping wheel. The replacement method of the band saw is not to completely replace the whole band saw, but to remove the worn section and at the same time move the unworn position to the notch, thereby reducing the use cost of the reciprocating band saw cutting device and reducing the economic loss caused by the replacement of the band saw.

Description

Technical Field

[0001] The invention relates to the field of cutting equipment, in particular to a reciprocating band saw cutting device. Background Art

[0002] A band saw is a cutting device that uses a ring-shaped endless saw blade to wrap around two saw wheels and make continuous rotating motion in the same direction to perform sawing. Band saws are highly efficient and have a small saw path. They are the most widely used main saw machine in China's wood processing equipment.

[0003] In the prior art, when a band saw in a band saw cutting machine is used for too long or the working section is severely worn, the band saw needs to be replaced, and the band saw can only be replaced by replacing the entire band saw blade.

[0004] However, the working section of a band saw is only a small part of the band saw blade, and a large part of it has not been used. Directly replacing it will cause certain losses and increase the cost of using the band saw cutting machine. Therefore, providing a cutting device that can effectively reduce the cost of using a band saw is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The invention provides a reciprocating band saw cutting device to solve the technical problem of high use cost of the band saw cutting machine existing in the prior art.

[0006] The present invention is achieved in that:

[0007] A reciprocating band saw cutting device comprises a frame, a workbench, a band saw, a new band saw wheel, a used band saw wheel, a driving motor, a first clamping wheel, a second clamping wheel and a reciprocating motion unit;

[0008] The new band saw wheel, the waste band saw wheel, the first clamping wheel and the second clamping wheel are all rotatably arranged on the upper end surface of the workbench, the driving motor is also arranged on the workbench, and the driving motor is drivingly connected with the waste band saw wheel, one end of the band saw is wound around the new band saw wheel, and the other end of the band saw is wound around the first clamping wheel and the second clamping wheel in sequence, and is wound around the waste band saw wheel, and a notch is arranged between the first clamping wheel and the second clamping wheel to facilitate the contact between the band saw and the object to be cut;

[0009] The reciprocating motion unit is arranged on the lower end surface of the workbench, and the reciprocating motion unit is transmission-connected with the first clamping wheel and the second clamping wheel. The first clamping wheel and the second clamping wheel are both provided with a clamping device for clamping and fixing the band saw.

[0010] To better implement the present invention, further optimization is made to the above structure. The reciprocating motion unit includes a reciprocating motor, a crank, a connecting rod, a power pulley, and a guiding pulley;

[0011] The number of both the power pulley and the guiding pulley is two. Both of the two power pulleys are rotatably arranged on the lower end surface of the workbench. The two power pulleys are connected by a first synchronous belt in a transmission manner. The two guiding pulleys are coaxially arranged with the first clamping wheel and the second clamping wheel respectively. Both of the two power pulleys are respectively connected with the two guiding pulleys by a second synchronous belt in a transmission manner;

[0012] The crank is arranged at the power output end of the reciprocating motor. One end of the connecting rod is hinged to the crank, and the other end of the connecting rod is eccentrically arranged on one of the power pulleys.

[0013] To better implement the present invention, further optimization is made to the above structure. Installation grooves for installing the clamping device are arranged on both the first clamping wheel and the second clamping wheel. And baffles are arranged on the circumferential side walls of the first clamping wheel and the second clamping wheel corresponding to the position of the clamping device. The telescopic end of the clamping device faces the baffle.

[0014] To better implement the present invention, further optimization is made to the above structure. A tensioning cylinder is arranged between the second clamping wheel and the notch. A tensioning wheel for abutting against the band saw is arranged at the telescopic end of the tensioning cylinder.

[0015] To better implement the present invention, further optimization is made to the above structure. Guide devices are arranged between the first clamping wheel and the notch and between the second clamping wheel and the notch.

[0016] To better implement the present invention, further optimization is made to the above structure. The guide device includes a guide seat, a spring, a movable bracket, a movable guide wheel, and a fixed guide wheel;

[0017] The fixed guide wheel and the guide seat are both arranged on the workbench. A guide post is slidably arranged on the guide seat. One end of the guide post is provided with a fixed block. The spring is sleeved on the guide post, and the spring is located between the guide seat and the fixed block. The other end of the guide post is connected to the movable bracket. The movable guide wheel is rotatably arranged on the movable bracket. The fixed guide wheel is located between the movable guide wheel and the guide seat, and the movable guide wheel is tangent to the fixed guide wheel.

[0018] In order to better realize the present invention, further optimization is made in the above structure. A lifting motor, a lifting screw and a slide rail are arranged on the frame. The slide rail is vertically arranged on the frame. The workbench is slidably arranged on the frame through the slide rail. The lifting screw is vertically and rotatably arranged on the workbench, and the lifting screw is connected to the power output end of the lifting motor.

[0019] In order to better implement the present invention, further optimization is made in the above structure, and a cutting table for placing the object to be cut is arranged at the position of the frame corresponding to the notch.

[0020] In order to better realize the present invention, further optimization is made in the above structure. The cutting table includes a fixed table and a sliding plate slidably arranged on the fixed table. A telescopic motor is arranged on the fixed table. A telescopic screw is arranged at the power output end of the telescopic motor. The telescopic motor is transmission-connected to the sliding plate through the telescopic screw.

[0021] In order to better realize the present invention, further optimization is made in the above structure, and two cover bodies are provided on the workbench for covering the new band saw wheel, the waste band saw wheel, the first clamping wheel and the second clamping wheel, and the two cover bodies are hinged on both sides of the workbench respectively.

[0022] In summary, the present invention has the following technical effects:

[0023] When the reciprocating band saw cutting device is working, the reciprocating motion unit drives the first clamping wheel and the second clamping wheel to realize reciprocating motion, and the clamping devices on the first clamping wheel and the second clamping wheel can fasten the band saw and drive the band saw to realize reciprocating motion, so that the reciprocating band saw cutting device can complete the cutting work;

[0024] When the working section of the band saw in the reciprocating band saw cutting device needs to be replaced due to wear, the staff can loosen the clamping devices on the first clamping wheel and the second clamping wheel, and start the driving motor to drive the waste band saw wheel to rotate, so that the waste band saw wheel rolls the band saw onto the waste band saw wheel, so that the worn band saw can move to the side of the waste band saw wheel, and the new band saw will move to the notch to form a new working section, and then be clamped and fixed by the clamping devices on the first clamping wheel and the second clamping wheel, thereby completing the replacement of the wire saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a schematic structural view of a reciprocating band saw cutting device of the present invention;

[0027] Figure 2 is Figure 1 a partial enlarged view of part A in

[0028] Figure 3 is a schematic structural view of a workbench in a reciprocating band saw cutting device of the present invention;

[0029] Figure 4 is a schematic structural view of a reciprocating motion unit in a reciprocating band saw cutting device of the present invention;

[0030] Figure 5 is a schematic structural view of a first clamping wheel in a reciprocating band saw cutting device of the present invention;

[0031] Figure 6 is a schematic structural view of a guiding device in a reciprocating band saw cutting device of the present invention;

[0032] Figure 7 is a schematic structural view of a cutting table in a reciprocating band saw cutting device of the present invention.

[0033] The marks in the figure are respectively:

[0034] 100, frame; 101, lifting motor; 102, lifting screw; 103, slide rail; 104, fixed table; 105, sliding plate; 106, telescopic motor; 107, telescopic screw; 200, workbench; 201, notch; 202, cover body; 300, band saw; 401, new band saw wheel; 402, waste band saw wheel; 500, drive motor; 601, first clamping wheel; 602, second clamping wheel; 603, installation groove; 604, clamping device; 605, baffle; 701, reciprocating motor; 702, crank; 703, connecting rod; 704, power pulley; 705, guiding pulley; 800, tensioning cylinder; 801, tensioning wheel; 900, guiding device; 901, guiding seat; 902, spring; 903, movable bracket; 904, movable guide wheel; 905, fixed guide wheel. Detailed implementation manners

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0038] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0040] Example 1, referring to Figures 1 to 7 as shown

[0041] A reciprocating band saw cutting device, characterized in that it includes a frame 100, a workbench 200, a band saw 300, a new band saw wheel 401, a waste band saw wheel 402, a driving motor 500, a first clamping wheel 601, a second clamping wheel 602 and a reciprocating motion unit;

[0042] The new band saw wheel 401, the waste band saw wheel 402, the first clamping wheel 601 and the second clamping wheel 602 are all rotatably arranged on the upper end surface of the workbench 200. The driving motor 500 is also arranged on the workbench 200, and the driving motor 500 is in transmission connection with the waste band saw wheel 402. One end of the band saw 300 is wound around the new band saw wheel 401, and the other end of the band saw 300 sequentially bypasses the first clamping wheel 601 and the second clamping wheel 602 and is wound around the waste band saw wheel 402. A notch 201 for facilitating the contact between the band saw 300 and the object to be cut is arranged between the first clamping wheel 601 and the second clamping wheel 602;

[0043] The reciprocating motion unit is arranged on the lower end surface of the workbench 200, and the reciprocating motion unit is in transmission connection with the first clamping wheel 601 and the second clamping wheel 602. Clamping devices 604 for clamping and fixing the band saw 300 are arranged on both the first clamping wheel 601 and the second clamping wheel 602.

[0044] For a reciprocating band saw cutting device with the above structure, during use, the staff can start the reciprocating motion unit, and this reciprocating motion unit can drive the first clamping wheel 601 and the second clamping wheel 602 to rotate back and forth. The clamping devices 604 on the first clamping wheel 601 and the second clamping wheel 602 clamp and fix the working section of the band saw 300, so that the working section of the band saw 300 also moves back and forth accordingly. At this time, the staff can place the item to be cut at the notch 201 of the workbench 200, and complete the cutting of the item through the reciprocating band saw 300;

[0045] When the working section of the band saw 300 is severely worn and needs to be replaced, the staff can first loosen the clamping device 604 on the first clamping wheel 601 and the second clamping wheel 602, and then drive the waste band saw wheel 402 to rotate through the drive motor 500. During the rotation of the waste band saw wheel 402, it can traction the band saw 300, so that the band saw 300 is wound around the waste band saw wheel 402, so that the worn working section is moved out of the notch 201 of the workbench 200, and the unworn band saw 300 wound around the new band saw wheel 401 will move to the notch 201 to form a new working section. At this time, the staff can fix the band saw 300 through the clamping device 604 on the first clamping wheel 601 and the second clamping wheel 602 to complete the replacement of the band saw 300.

[0046] The replacement method of the band saw 300 does not completely replace the whole band saw 300, but removes the worn section and moves the unworn position to the notch 201 at the same time, so as to reduce the use cost of the reciprocating band saw cutting device and reduce the economic loss caused by the replacement of the band saw 300.

[0047] Optimally, the above-mentioned reciprocating motion unit includes a reciprocating motor 701, a crank 702, a connecting rod 703, a power pulley 704 and a guiding pulley 705; among them,

[0048] The number of the power pulley 704 and the guiding pulley 705 is two. The two power pulleys 704 are rotatably arranged on the lower end surface of the workbench 200. The two guiding pulleys 705 are coaxially arranged with the first clamping wheel 601 and the second clamping wheel 602 respectively. The two power pulleys 704 are connected by a first synchronous belt, and the two power pulleys 704 are respectively connected with the two guiding pulleys 705 by a second synchronous belt; the reciprocating motor 701 is arranged on the workbench 200, the crank 702 is arranged at the power output end of the reciprocating motor 701, one end of the connecting rod 703 is connected with the crank 702, and the other end of the connecting rod 703 is eccentrically arranged on one of the power pulleys 704;

[0049] When the reciprocating motor 701 is working, the rotation of the reciprocating motor 701 will drive the power pulley 704 to rotate through the crank 702 and the connecting rod 703. Since the rotation radius of the crank 702 is smaller than the rotation radius of the power pulley 704, therefore, under the continuous rotation of the reciprocating motor 701, the power pulley 704 will be reciprocated under the action of the connecting rod 703 to drive the first clamping wheel 601 and the second clamping wheel 602 to reciprocate, so as to realize the reciprocating action of the band saw 300 and enable the reciprocating band saw cutting device to complete the cutting work.

[0050] Optimized, the first clamping wheel 601 is provided with an installation groove 603, the above-mentioned clamping device 604 is arranged in the installation groove 603, the first clamping wheel 601 is provided with a baffle 605, the baffle 605 is located on the circumferential side wall of the first clamping wheel 601, and at the position corresponding to the installation groove 603, the telescopic end of the clamping device 604 is arranged towards the baffle 605. The structure of the second clamping wheel 602 is exactly the same as that of the first clamping wheel 601. When the staff winds the band saw 300, it is necessary to pass the band saw 300 between the baffle 605 and the clamping device 604, and the clamping / loosening of the band saw 300 is realized by controlling the cooperation between the telescopic end of the clamping device 604 and the baffle 605.

[0051] Preferably, a tensioning device for adjusting the tension of the band saw 300 is arranged between the second clamping wheel 602 and the notch 201.

[0052] Specifically, the tensioning device includes a tensioning cylinder 800 and a tensioning wheel 801. The tensioning wheel 801 is arranged at the telescopic end of the tensioning cylinder 800. The band saw 300 is attached to the circumferential side wall of the tensioning wheel 801. By controlling the telescopic movement of the tensioning cylinder 800, the tension of the band saw 300 is adjusted, making the use of this reciprocating band saw cutting device more convenient.

[0053] Optimized, a guiding device 900 is arranged between the first clamping wheel 601 and the notch 201, and a guiding device 900 is also arranged between the second clamping wheel 602 and the notch 201. The guiding device 900 can prevent the band saw 300 from deforming under force during the cutting work of this reciprocating band saw cutting device, resulting in the situation that the band saw 300 cannot complete the cutting work, thereby making the working state of this reciprocating cutting device more stable.

[0054] Specifically, the guiding device 900 includes a guiding seat 901, a spring 902, a movable bracket 903, a movable guide wheel 904 and a fixed guide wheel 905. Among them,

[0055] The fixed guide wheel 905 and the guiding seat 901 are both arranged on the workbench 200. The guiding seat 901 is provided with a guiding column, and the guiding column can freely slide on the guiding seat 901 along its length direction. A fixed block is arranged at the end of the guiding column far from the band saw 300. The spring 902 is sleeved on the guiding column, and the spring 902 is located between the fixed block and the guiding seat 901. The movable bracket 903 is arranged at the end of the guiding column close to the band saw 300, the movable guide wheel 904 is arranged on the movable bracket 903, and the fixed guide wheel 905 is located between the movable guide wheel 904 and the guiding seat 901.

[0056] When winding the band saw 300, it is necessary to pass the band saw 300 between the fixed guide pulley 905 and the movable guide pulley 904. The movable guide pulley 904 is subjected to the restoring force of the spring 902, which will squeeze the band saw 300 against the circumferential surface of the fixed guide pulley 905. When the band saw 300 is cutting, the movable guide pulley 904 and the fixed guide pulley 905 can effectively play a limiting role to prevent the band saw 300 from deforming under force and resulting in the situation where the band saw 300 cannot complete the cutting work normally.

[0057] When the force on the band saw 300 is too large, the band saw 300 will squeeze the movable guide pulley 904 during the deformation process. At this time, the movable guide pulley 904 will drag the movable bracket 903 and cause the fixed block to squeeze the spring 902, causing the movable guide pulley 904 to move away from the fixed guide pulley 905 to prevent the band saw 300 from breaking due to excessive force. When the band saw 300 returns to its initial state, the movable guide pulley 904 will return to its initial state under the action of the restoring force of the spring 902, enabling the reciprocating band saw cutting device to continue to maintain a stable working state.

[0058] Refer to Embodiment 2 Figures 1 to 6 as shown in

[0059] The device provided by the embodiment of the present invention has the same implementation principle and technical effects as those of Embodiment 1. For a brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding content in Embodiment 1.

[0060] The device obtained through the above design can basically meet the use of the reciprocating band saw cutting device. However, with the aim of further improving its functions, the designer has further improved the device.

[0061] An elevating motor 101, an elevating screw 102 and a slide rail 103 are further provided on the above-mentioned frame 100; among them,

[0062] The slide rail 103 is vertically arranged on the frame 100. The above-mentioned workbench 200 is slidably arranged on the frame 100 through the slide rail 103. The elevating motor 101 is also arranged on the frame 100, and the power output end of the elevating motor 101 is in transmission connection with the elevating screw 102. The workbench 200 is provided with a threaded hole matching the elevating screw 102, and the elevating screw 102 is inserted into the threaded hole. When the reciprocating band saw cutting device is working, the operator can control the rotation direction of the elevating motor 101 to realize the lifting / lowering of the workbench 200 to complete the adjustment of the position of the workbench 200, making the reciprocating band saw cutting device more convenient to work.

[0063] Optimized, a cutting table is also provided at the position of the rack 100 corresponding to the notch 201 described above, and a cutting slot is provided at the position of the cutting table corresponding to the band saw 300; when performing cutting work, the staff can place the object to be cut on the cutting table, and then adjust the position of the workbench 200 through the lifting motor 101 so that the band saw 300 can contact the object to be cut to complete the cutting of the article;

[0064] The setting of the cutting slot enables the reciprocating band saw cutting device to completely cut off the object to be cut when cutting an article, and can effectively avoid the situation that the band saw 300 is worn due to contact with the cutting table.

[0065] Preferably, the cutting table includes a fixed table 104 and a sliding plate 105; among them,

[0066] The sliding plate 105 is horizontally slidably arranged on the fixed table 104. A telescopic motor 106 is also provided on the fixed table 104. The power output end of the telescopic motor 106 is provided with a telescopic screw 107. A screw hole matching the telescopic screw 107 is provided on the sliding plate 105. The telescopic screw 107 is inserted into the screw hole on the sliding plate 105. By controlling the rotation direction of the telescopic motor 106, the position of the sliding plate 105 can be adjusted, making the reciprocating band saw cutting device more convenient when performing cutting work.

[0067] Optimized, a cover 202 is also provided on the workbench 200 described above. The number of covers 202 is two, and the two covers 202 are respectively hinged on both sides of the workbench 200. The cover 202 can rotate along its hinge with the workbench 200 so that the cover 202 can cover the new band saw wheel 401, the waste band saw wheel 402, the first clamping wheel 601 and the second clamping wheel 602, making the use of the reciprocating band saw cutting device safer, and the cover 202 can effectively avoid the situation that sundries fall on the new band saw wheel 401, the waste band saw wheel 402, the first clamping wheel 601 and the second clamping wheel 602 and cause their damage.

[0068] It should be noted that an opening is provided on the side wall of the cover 202; when the cover 202 is covered on the workbench 200, the position of the band saw 300 is just located at the opening to avoid the situation that the setting of the cover 202 causes the reciprocating band saw cutting device to malfunction.

[0069] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A reciprocating band saw cutting device, characterized in that, It includes a frame (100), a workbench (200), a band saw (300), a new band saw wheel (401), a waste band saw wheel (402), a drive motor (500), a first clamping wheel (601), a second clamping wheel (602) and a reciprocating motion unit; The new band saw wheel (401), the waste band saw wheel (402), the first clamping wheel (601) and the second clamping wheel (602) are all rotatably arranged on the upper end surface of the workbench (200). The drive motor (500) is also arranged on the workbench (200), and the drive motor (500) is in transmission connection with the waste band saw wheel (402). One end of the band saw (300) is wound around the new band saw wheel (401), and the other end of the band saw (300) sequentially bypasses the first clamping wheel (601) and the second clamping wheel (602) and is wound around the waste band saw wheel (402). A notch (201) for facilitating the contact between the band saw (300) and the object to be cut is arranged between the first clamping wheel (601) and the second clamping wheel (602); The reciprocating motion unit is arranged on the lower end surface of the workbench (200), and the reciprocating motion unit is in transmission connection with the first clamping wheel (601) and the second clamping wheel (602). Clamping devices (604) for clamping and fixing the band saw (300) are arranged on both the first clamping wheel (601) and the second clamping wheel (602); The reciprocating motion unit includes a reciprocating motor (701), a crank (702), a connecting rod (703), a power pulley (704) and a guiding pulley (705); The number of the power pulleys (704) and the guiding pulleys (705) is two each. Both of the two power pulleys (704) are rotatably arranged on the lower end surface of the workbench (200). The two power pulleys (704) are in transmission connection through a first synchronous belt. The two guiding pulleys (705) are coaxially arranged with the first clamping wheel (601) and the second clamping wheel (602) respectively. Both of the two power pulleys (704) are in transmission connection with the two guiding pulleys (705) respectively through second synchronous belts; The crank (702) is arranged at the power output end of the reciprocating motor (701). One end of the connecting rod (703) is hinged to the crank (702), and the other end of the connecting rod (703) is eccentrically arranged on one of the power pulleys (704); Two covers (202) for covering the new band saw wheel (401), the waste band saw wheel (402), the first clamping wheel (601) and the second clamping wheel (602) are arranged on the workbench (200). The two covers (202) are respectively hinged on both sides of the workbench (200).

2. The reciprocating band saw cutting device according to claim 1, wherein The first clamping wheel (601) and the second clamping wheel (602) are both provided with mounting grooves (603) for mounting the clamping device (604), and baffles (605) are arranged on the circumferential side walls of the first clamping wheel (601) and the second clamping wheel (602) corresponding to the position of the clamping device (604), and the telescopic end of the clamping device (604) faces the baffle (605).

3. The reciprocating band saw cutting device according to claim 2, characterized in that, A tensioning cylinder (800) is arranged between the second clamping wheel (602) and the notch (201), and a tensioning wheel (801) for abutting against the band saw (300) is arranged at the telescopic end of the tensioning cylinder (800).

4. The reciprocating band saw cutting device according to claim 3, characterized in that, Guiding devices (900) are arranged between the first clamping wheel (601) and the notch (201) and between the second clamping wheel (602) and the notch (201).

5. The reciprocating band saw cutting device according to claim 4, wherein, The guiding device (900) includes a guiding seat (901), a spring (902), a movable bracket (903), a movable guide wheel (904) and a fixed guide wheel (905). The fixed guide wheel (905) and the guiding seat (901) are both arranged on the workbench (200). A guiding column is slidably arranged on the guiding seat (901). One end of the guiding column is provided with a fixed block. The spring (902) is sleeved on the guiding column, and the spring (902) is located between the guiding seat (901) and the fixed block. The other end of the guiding column is connected to the movable bracket (903). The movable guide wheel (904) is rotatably arranged on the movable bracket (903). The fixed guide wheel (905) is located between the movable guide wheel (904) and the guiding seat (901), and the movable guide wheel (904) is tangent to the fixed guide wheel (905).

6. The reciprocating band saw cutting device according to any one of claims 1 to 5, characterized in that, A lifting motor (101), a lifting screw rod (102) and a slide rail (103) are arranged on the frame (100). The slide rail (103) is vertically arranged on the frame (100). The workbench (200) is slidably arranged on the frame (100) through the slide rail (103). The lifting screw rod (102) is vertically and rotatably arranged on the workbench (200), and the lifting screw rod (102) is connected to the power output end of the lifting motor (101).

7. The reciprocating band saw cutting device according to claim 6, wherein, A cutting table for facilitating the placement of the object to be cut is arranged at the position of the frame (100) corresponding to the notch (201).

8. The reciprocating band saw cutting device according to claim 7, characterized in that, The cutting table includes a fixed table (104) and a sliding plate (105) slidably arranged on the fixed table (104). A telescopic motor (106) is arranged on the fixed table (104). A telescopic screw rod (107) is arranged at the power output end of the telescopic motor (106). The telescopic motor (106) is in transmission connection with the sliding plate (105) through the telescopic screw rod (107).

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