Saw blade tensioning mechanism of woodworking band sawing machine

Abstract

The saw blade tensioning mechanism of the woodworking band sawing machine comprises an upper wheel shaft assembly, a tensioning assembly and a supporting plate, and the upper wheel shaft assembly and the tensioning assembly are both arranged in an inner space defined by the supporting plate and an upper box body. The tensioning assembly is arranged above the upper wheel shaft assembly; a part of the lower edge of the tensioning assembly is arranged in the upper wheel shaft assembly; the tensioning assembly comprises a tensioning part, a mounting part and a connecting part. In addition, the tensioning part is fixedly connected with the upper wheel shaft assembly through the connecting part. The tensioning assembly can drive the upper wheel shaft assembly to move, so that the upper wheel moves, and finally tensioning of the saw blade is completed. The saw blade tensioning mechanism is convenient to assemble, easy to operate, stable in structure and capable of improving stability of a band sawing machine during operation and improving sawing quality.

Description

TECHNICAL FIELD

[0001] The utility model belongs to woodworking machinery technical field, concretely relates to a saw blade tensioning mechanism of woodworking band sawing machine. BACKGROUND

[0002] The saw blade tensioning mechanism is a key component for maintaining proper tension of the saw blade during operation. This mechanism ensures smooth operation of the saw blade during cutting, reduces vibration, and avoids problems such as reduced cutting quality or saw blade derailment due to insufficient tension.

[0003] The existing saw blade tensioning mechanism is installed in the upper box body by bolts, which increases the installation steps and makes the assembly of the band sawing machine more complicated. When the screws are loose, it affects the use of the band sawing machine and reduces the use effect of the band sawing machine. UTILITY MODEL CONTENTS

[0004] The utility model provides a saw blade tensioning mechanism of woodworking band sawing machine, solves the problem of complicated assembly and instability of the existing saw blade tensioning mechanism.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A saw blade tensioning mechanism of a woodworking band sawing machine, comprising an upper axle assembly, a tensioning assembly, and a support plate,

[0007] The upper axle assembly and the tensioning assembly are both placed in the internal space enclosed by the support plate and the upper box body.

[0008] The tensioning assembly is arranged above the upper axle assembly, and a part of the lower edge of the tensioning assembly is placed inside the upper axle assembly. The tensioning assembly comprises a tensioning component, a mounting component, and a connecting component. The tensioning component is fixedly connected to the upper axle assembly through the connecting component.

[0009] Further, the tensioning component comprises a screw rod, a locking connecting plate, a spring, and a U-shaped bracket. The U-shaped bracket is a reversed U-shaped structure with the opening facing downward, and its lower end is fixedly connected to the upper axle assembly.

[0010] Further, the lower end of the screw rod passes through the top of the upper box body, the U-shaped bracket, the spring, and the locking connecting plate in sequence. The screw rod is movably connected to the top of the upper box body, the U-shaped bracket, and the spring, and is threadedly connected to the locking connecting plate.

[0011] Further, the support plate comprises a cross support plate, a left support plate, and a right support plate. The two ends of the cross support plate are fixedly connected to the left support plate and the right support plate, respectively. The upper and lower end faces of the left support plate and the right support plate are fixedly connected to the inner wall of the upper box body.

[0012] Further, the screw rod passes through the cross support plate and is movably connected.

[0013] Further, the upper wheel shaft assembly comprises an upper wheel shaft connecting plate and an upper wheel shaft, the upper wheel shaft is fixedly connected with the upper wheel shaft connecting plate, and the upper wheel shaft connecting plate is a hollow rectangular structure, the lower end of the U-shaped frame is inserted into the upper wheel shaft connecting plate and is fixedly connected.

[0014] Further, the connecting component comprises a connecting rod, the two ends of the connecting rod pass through the side walls of the U-shaped frame and the upper wheel shaft connecting plate in sequence and are fixedly connected.

[0015] Further, the left support plate and the right support plate are provided with sliding grooves matched with the connecting rod, and the two ends of the connecting rod are movably connected in the sliding grooves.

[0016] The sliding grooves are configured to limit the movement of the connecting rod.

[0017] Further, the connecting rod and the U-shaped frame are provided with a retaining ring.

[0018] Further, the mounting component comprises a hand wheel, and the hand wheel is fixedly mounted at the top end of the screw rod.

[0019] Compared with the prior art, the wood band saw machine has the advantages and beneficial effects that:

[0020] 1. The wood band saw machine simplifies the assembly steps of the band saw, so that the operator can conveniently and quickly adjust the saw blade tension.

[0021] 2. The wood band saw machine is provided with support plates, so that the load-carrying capacity and deformation resistance of the upper box body can be improved.

[0022] 3. The wood band saw machine can improve the stability during operation of the band saw machine and improve the sawing quality. DRAWINGS

[0023] Figure 1 It is a whole structure schematic view of the wood band saw machine.

[0024] Figure 2 It is an internal structure schematic view of the upper box body.

[0025] Figure 3 It is a structure schematic view of the tensioning mechanism.

[0026] Figure 4 It is a structure schematic view of the connecting rod.

[0027] In the diagram: 1. Frame; 2. Upper housing; 3. Lower housing; 4. Upper wheel; 5. Lower wheel; 6. Upper wheel axle connecting plate; 7. Tensioning assembly; 8. Left support plate; 9. Right support plate; 10. Tensioning component; 11. U-shaped frame; 12. Screw; 13. Locking connecting plate; 14. Spring; 15. Upper wheel axle; 16. Cross brace plate; 17. Handwheel; 18. Slide groove; 19. Connecting rod; 20. Retaining ring. Detailed Implementation

[0028] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection claimed by this utility model is not limited to the scope of the examples described. Example 1

[0029] like Figures 1-4 As shown, the woodworking band saw includes a frame 1, on which an upper housing 2 and a lower housing 3 are fixedly mounted. An upper wheel 4 and a lower wheel 5 are respectively installed inside the upper housing 2 and the lower housing 3.

[0030] The present invention discloses a saw blade tensioning mechanism for a woodworking band saw, which includes an upper wheel axle assembly, a tensioning assembly 7, and a support plate. The upper wheel axle assembly and the tensioning assembly 7 are both placed in the internal space enclosed by the support plate and the upper housing 2. The tensioning assembly 7 is located above the upper wheel axle assembly, and a portion of the lower side of the tensioning assembly 7 is placed inside the upper wheel axle assembly.

[0031] The tensioning assembly 7 includes a tensioning component 10, a mounting component, and a connecting component;

[0032] In addition, the tensioning component 10 is fixedly connected to the upper wheel axle assembly via the connecting component.

[0033] The tensioning component 7 can drive the upper wheel axle assembly to move up and down, thereby causing the upper wheel 4 to move up and down, changing the distance between the upper wheel 4 and the lower wheel 5, and finally completing the tensioning of the saw blade.

[0034] Specifically, the tensioning component 10 includes a screw 12, a locking plate 13, a spring 14, and a U-shaped frame 11. The U-shaped frame 11 is an inverted U-shaped structure with the opening facing downwards, and its lower end is fixedly connected to the upper wheel axle assembly.

[0035] The lower end of the screw 12 passes sequentially through the top of the upper housing 2, the U-shaped frame 11, the spring 14, and the locking plate 13. The screw 12 is movably connected to the top of the upper housing 2, the U-shaped frame 11, and the spring 14, and is threadedly connected to the locking plate 13. The locking plate 13 is slidably connected to the inner wall of the U-shaped frame 11.

[0036] The mounting component is a hand wheel 17, which is fixedly installed at the top end of the screw rod 12.

[0037] The support plate comprises a cross support plate 16, a left support plate 8 and a right support plate 9, two ends of the cross support plate 16 are fixedly connected to the left support plate 8 and the right support plate 9 respectively; the screw rod 12 passes through the cross support plate 16 and is movably connected, and specifically can be bearing connection.

[0038] The upper and lower end faces of the left support plate 8 and the right support plate 9 are fixedly connected to the inner wall of the upper box body 2.

[0039] Specifically, the upper wheel shaft assembly comprises an upper wheel shaft connecting plate 6 and an upper wheel shaft 15; the upper wheel shaft 15 is fixedly connected to the upper wheel shaft connecting plate 6, and the upper wheel shaft connecting plate 6 is a hollow rectangular structure; the lower end of the U-shaped frame 11 is inserted into the inside of the upper wheel shaft connecting plate 6 and is fixedly connected by a connecting component.

[0040] The connecting component comprises a connecting rod 19, both ends of the connecting rod 19 pass through the side wall of the U-shaped frame 11 and the upper wheel shaft connecting plate 6 in sequence, and then are inserted into the sliding groove 18 formed in the left support plate 8 and the right support plate 9; and the connecting rod 19 is fixedly connected to the U-shaped frame 11 and the upper wheel shaft connecting plate 6; however, the connecting rod 19 is movably connected in the sliding groove 18; and the sliding groove 18 is configured to limit the movement of the connecting rod 19.

[0041] The connecting rod 19 and the U-shaped frame 11 are both provided with a check ring 20.

[0042] The use process of the utility model is as follows:

[0043] Firstly, the hand wheel 17 is rotated, the screw rod 12 is rotated, the locking connecting plate 13 is moved downward by the rotation of the screw rod 12, the U-shaped frame 11 at the end of the locking connecting plate 13 is moved due to the elastic force of the spring 14, the upper wheel shaft connecting plate 6 on the U-shaped frame 11 is moved downward.

[0044] When the upper wheel shaft connecting plate 6 on the U-shaped frame 11 is moved downward, the upper wheel 4 is moved downward, the distance between the upper wheel 4 and the lower wheel 5 is changed, and the saw blade on the upper wheel 4 and the lower wheel 5 is in the loosened state.

[0045] II. Reverse direction rotating handle 17, through screw rod 12 rotation makes the locking connecting plate 13 move upward, the spring 14 elastic force acts and thus the U-shaped frame 11 on its end moves, the upper wheel shaft connecting plate 6 on the U-shaped frame 11 moves upward and thus drives the upper wheel 4 to move upward, makes the distance between the upper wheel 4 and the lower wheel 5 change, after the saw blade reaches the tension state, stop operating the tensioning handle 17.

[0046] In summary, the above-mentioned embodiments are not the limiting embodiments of the present application, and any modification or equivalent transformation made by those skilled in the art on the basis of the essential content of the present application is within the technical scope of the present application.

Claims

1. A saw blade tensioning mechanism for a woodworking band saw machine, characterized in that, The upper wheel shaft assembly, the tensioning assembly and the support plate are arranged in the internal space surrounded by the support plate and the upper box body. The upper wheel shaft assembly and the tensioning assembly are arranged in the internal space surrounded by the support plate and the upper box body. The tensioning assembly is arranged above the upper wheel shaft assembly, and a part of the lower edge of the tensioning assembly is arranged in the internal space of the upper wheel shaft assembly. The tensioning assembly comprises a tensioning component, a mounting component and a connecting component. The tensioning component is fixedly connected to the upper wheel shaft assembly through the connecting component.

2. A saw blade tensioning mechanism for a woodworking band saw machine according to claim 1, characterized in that The tensioning component comprises a screw rod, a locking connecting plate, a spring and a U-shaped frame.

3. A saw blade tensioning mechanism for a wood working band saw machine according to claim 2, characterized in that The U-shaped frame is in an upside-down U-shaped structure with an opening facing downward, and the lower end of the U-shaped frame is fixedly connected to the upper wheel shaft assembly. The lower end of the screw rod passes through the top of the upper box body, the U-shaped frame, the spring and the locking connecting plate in sequence.

4. A saw blade tensioning mechanism for a wood working band saw machine according to claim 2, characterized in that The screw rod is movably connected to the top of the upper box body, the U-shaped frame and the spring, and is threadedly connected to the locking connecting plate. The support plate comprises a cross support plate, a left support plate and a right support plate.

5. A saw blade tensioning mechanism for a wood working band saw machine according to claim 4, characterized in that The upper and lower end faces of the left support plate and the right support plate are fixedly connected to the inner wall of the upper box body.

6. A saw blade tensioning mechanism for a wood working band saw machine according to claim 4, characterized in that The screw rod passes through the cross support plate and is movably connected to the cross support plate.

7. A saw blade tensioning mechanism for a wood working band saw machine according to claim 6, characterized in that The upper wheel shaft assembly comprises an upper wheel shaft connecting plate and an upper wheel shaft.

8. A saw blade tensioning mechanism for a woodworking band saw machine according to claim 7, characterized in that The upper wheel shaft is fixedly connected to the upper wheel shaft connecting plate, and the upper wheel shaft connecting plate is in a hollow rectangular structure. The lower end of the U-shaped frame is inserted into the internal space of the upper wheel shaft connecting plate and is fixedly connected to the upper wheel shaft connecting plate.

9. A saw blade tensioning mechanism for a wood working band saw machine according to claim 7, characterized in that The connecting component comprises a connecting rod.

10. A saw blade tensioning mechanism for a wood working band saw machine according to claim 2, characterized in that The two ends of the connecting rod pass through the side wall of the U-shaped frame and the upper wheel shaft connecting plate in sequence and are fixedly connected. The left support plate and the right support plate are provided with sliding grooves matched with the connecting rod. The two ends of the connecting rod are movably connected in the sliding grooves. The sliding grooves are configured to limit the movement of the connecting rod. A stop ring is arranged between the connecting rod and the U-shaped frame. The mounting component comprises a hand wheel. The hand wheel is fixedly installed at the top end of the screw rod.

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