Twisting device with saw blade

Abstract

The utility model discloses a band saw blade twisting device which comprises an assembling frame, a driving mechanism, a steering mechanism and a positioning mechanism, the driving mechanism comprises an oil cylinder and a transmission assembly, the transmission assembly comprises a rack and a rotating disc, the rack is fixedly connected with a piston rod of the oil cylinder, and fan-shaped teeth are arranged on a quarter area of the outer circumferential face of the rotating disc. The sector teeth are meshed with the rack, and the rack is driven by the oil cylinder to drive the rotary disc to rotate in a reciprocating mode. The steering mechanism comprises a steering seat and a guide assembly, the steering seat is fixedly connected with the turntable, the steering seat can be driven by the turntable to rotate back and forth between a first position and a second position, when the steering seat is located at the first position, the saw blade is located at the initial position, and when the steering seat is located at the second position, the saw blade is twisted by 90 degrees; the positioning mechanism comprises a first positioning assembly and a second positioning assembly. The band saw blade twisting device is high in steering speed and steering precision, and the machining efficiency and machining precision of a band sawing machine are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of band sawing machine, concretely relates to a band saw blade twisting device. BACKGROUND

[0002] The band saw blade is the important component of the band sawing machine, the band sawing machine is a kind of sawing processing equipment, it realizes the sawing processing of material by driving the band saw blade, the band saw blade is endless annular steel band with side edge tooth, is sleeved on two saw wheels and is driven by saw wheel friction.Due to the different processing requirements and processing materials, sometimes need to carry out horizontal sawing to material, sometimes need to carry out longitudinal sawing to material, the traditional band sawing machine can only make straight line one-way sawing processing, and the adaptability is poor, cannot satisfy the turning sawing requirement, so the turning operation needs to be carried out to the band saw blade, to make the band saw blade convert in horizontal position and vertical position, and the turning speed and turning precision of the band saw blade directly influence the processing efficiency and processing precision of material, but the turning of the existing band saw blade is mostly operated by manual, and the turning speed and turning precision cannot be guaranteed. SUMMARY

[0003] The utility model discloses to the problem of traditional band saw blade turning speed and turning precision cannot be guaranteed in prior art, provide a kind of band saw blade twisting device.The utility model discloses the purpose of invention is realized by the following technical scheme:

[0004] A kind of band saw blade twisting device, it includes assembly frame, and drive mechanism, turning mechanism and positioning mechanism assembled on assembly frame, the drive mechanism includes oil cylinder and transmission assembly, transmission assembly includes rack and turntable, rack is fixedly connected with the piston rod of oil cylinder, the outer circumferential surface of turntable is provided with sector tooth in one fourth area, the sector tooth is engaged with rack, rack is driven under the oil cylinder and reciprocating linear operation, and can drive turntable reciprocating rotation, the rotation angle of turntable is 90 degrees;The turning mechanism includes turning seat, and guiding assembly assembled on turning seat, the turning seat is fixedly connected with turntable, and turning seat can reciprocating rotation between first position and second position under the driving of turntable, when turning seat is located at first position, saw blade is located at initial position, when turning seat is located at second position, saw blade twists 90 degrees;The positioning mechanism includes the first positioning assembly that the first position of turning seat is positioned, and the second positioning assembly that the second position of turning seat is positioned.

[0005] As preferred, the turntable is located above the turning seat, a first belt gap is formed on the turntable and extends along the radial direction of the turntable.

[0006] As preferred, the assembly frame includes an assembly plate, the turntable is rotatably assembled on the assembly plate, a rotating hole is formed on the assembly plate and matched with the turntable, and a strip-shaped slot is in communication with the rotating hole, the strip-shaped slot is arranged in alignment with the first belt gap.

[0007] As preferred, the rotating disc is divided into a transmission part and an assembly part along the axial direction, the fan-shaped teeth are formed on the outer circumferential surface of the transmission part, and the transmission part and the assembly part are coaxially arranged with the rotating hole, and the assembly part is rotationally assembled in the rotating hole.

[0008] As preferred, the rotating disc is fixedly connected with the steering seat through a connecting plate, the connecting plate is located below the assembly plate, and a second belt running gap is formed on the connecting plate and is aligned with the first belt running gap.

[0009] As preferred, the steering seat comprises a U-shaped assembly block and a square assembly block formed above the U-shaped assembly block, a U-shaped groove is formed on the U-shaped assembly block, and a strip-shaped groove is formed on the square assembly block and is communicated with the U-shaped groove.

[0010] As preferred, the steering seat comprises a U-shaped assembly block and a square assembly block formed above the U-shaped assembly block, a U-shaped groove is formed on the U-shaped assembly block, and a strip-shaped groove is formed on the square assembly block and is communicated with the U-shaped groove.

[0011] As preferred, two clamping blocks are assembled in the strip-shaped groove, and a third belt running gap is formed between the two clamping blocks, and the third belt running gap is aligned with the clamping gap, the first belt running gap and the second belt running gap.

[0012] As preferred, the square assembly block is provided with a first abutting flat wall and a second abutting flat wall, the first positioning assembly comprises a first positioning plate fixedly arranged on the assembly frame, a first adjusting screw hole is formed on the first positioning plate, and a first positioning screw column is assembled in the first adjusting screw hole, and when the steering seat is located at the first position, the first abutting flat wall abuts against the front end of the first positioning screw column.

[0013] As preferred, the second positioning assembly comprises a second positioning plate fixedly arranged on the assembly frame, a second adjusting screw hole is formed on the second positioning plate, and a second positioning screw column is assembled in the second adjusting screw hole, and when the steering seat is located at the second position, the second abutting flat wall abuts against the front end of the second positioning screw column.

[0014] Compared with the prior art, the utility model has the following technical effects: the driving mechanism and the steering mechanism cooperate to realize automatic steering of the band saw blade, improve the steering efficiency, and the cooperation of the rack and the rotating disc limits the steering angle and improves the steering precision; the rotating disc and the steering seat are reasonably distributed, the structure of the whole device is more compact, the band saw blade passes through three belt running gaps at the same time, the rotating disc, the connecting plate and the steering seat can all provide reliable torsional force for the band saw blade, and the band saw blade steering operation is more stable and reliable; the two positioning assemblies are both composed of a positioning plate and a positioning screw column, the position of the adjusting screw column is adjustable, the influence of the machining error and the assembly error of the positioning plate can be eliminated, the positioning is more accurate, and the band saw blade steering precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is a structural schematic view of the driving mechanism in the utility model;

[0017] Figure 3 is a structural schematic view of the steering mechanism and the positioning mechanism in the utility model;

[0018] Figure 4 is a structural schematic view of the steering mechanism in the utility model;

[0019] Markings in the drawing: assembly frame 10; assembly plate 11; strip-shaped slot 111; rotating hole 112; oil cylinder 21; rack 22; rotating disc 23; transmission part 231; sector tooth 232; assembly part 233; first belt running gap 234; steering seat 31; U-shaped assembly block 311; square assembly block 312; first abutting flat wall 3121; belt clamping wheel 32; belt clamping gap 321; belt pressing wheel 33; clamping block 34; third belt running gap 341; first positioning plate 41; first adjusting screw hole 411; second positioning plate 42; second adjusting screw hole 421; connecting plate 50; second belt running gap 51. DETAILED DESCRIPTION

[0020] The utility model will be further described in combination with the embodiments shown in the drawings:

[0021] Referring to Figure 1 The embodiment discloses a band saw blade twisting device, which is assembled on a band sawing machine and is used for twisting a band saw blade to change a sawing direction, and the twisting device comprises an assembly frame 10, and a driving mechanism, a steering mechanism and a positioning mechanism assembled on the assembly frame 10.

[0022] Referring to Figure 2 The driving mechanism comprises an oil cylinder 21 and a transmission assembly, the transmission assembly comprises a rack 22 and a rotating disc 23, the rack 22 is fixedly connected with a piston rod of the oil cylinder 21, a quarter of the outer circumferential surface of the rotating disc 23 is provided with sector teeth 232, the sector teeth 232 are engaged with the rack 22, the rack 22 is driven by the oil cylinder 21 to move linearly back and forth, and can drive the rotating disc 23 to rotate back and forth, the rotating angle of the rotating disc 23 is 90 degrees, the oil cylinder 21 is controlled through an electromagnetic valve, the automatic steering of the band saw blade can be realized, the steering efficiency is improved, and the steering precision is improved due to the cooperation of the rack 22 and the rotating disc 23 limiting the steering angle.

[0023] The rotating disc 23 is located above the steering seat 31, and a first walking gap 234 is formed in the rotating disc 23 and extends along the radial direction of the rotating disc 23. The assembling frame 10 comprises an assembling plate 11, the rotating disc 23 is rotatably assembled on the assembling plate 11, a rotating hole 112 is formed in the assembling plate 11 and matched with the rotating disc 23, and a strip-shaped slot 111 is communicated with the rotating hole 112, the strip-shaped slot 111 is arranged in position with the first walking gap 234 to facilitate the installation of the band saw blade. The rotating disc 23 is divided into a driving part 231 and an assembling part 233 along the axial direction, the fan-shaped teeth are formed on the outer circumferential surface of the driving part 231, and the driving part 231 and the assembling part 233 are coaxially arranged with the rotating hole 112, and the assembling part 233 is rotatably assembled in the rotating hole 112.

[0024] Referring to Figure 3 , Figure 4 The steering mechanism comprises the steering seat 31 and a guide assembly assembled on the steering seat 31. The steering seat 31 is fixedly connected with the rotating disc 23, and can reciprocate between the first position and the second position under the driving of the rotating disc 23. When the steering seat 31 is located at the first position, the saw blade is located at the initial position, and when the steering seat 31 is located at the second position, the saw blade is twisted by 90 degrees.

[0025] The rotating disc 23 is fixedly connected with the steering seat 31 through a connecting plate 50, and the three are fixedly connected through bolts. The connecting plate 50 is located below the assembling plate 11, and a second walking gap 51 is formed in the connecting plate 50 and arranged in position with the first walking gap 234. The steering seat 31 comprises a U-shaped assembling block 311 and a square assembling block 312 formed above the U-shaped assembling block 311. A U-shaped slot is formed in the U-shaped assembling block 311, and a strip-shaped slot is formed in the square assembling block 312 and communicated with the U-shaped slot. The guide assembly comprises two clamping wheels 32 and a pressing wheel 33. The two clamping wheels 32 are symmetrically assembled at the bottom of the U-shaped assembling block 311, and a clamping gap 321 is formed between the two clamping wheels 32. The pressing wheel 33 is rotatably assembled in the U-shaped slot, and the clamping wheel 32 and the pressing wheel 33 can guide the sawing movement of the band saw blade and improve the sawing accuracy. Two clamping blocks 34 are assembled in the strip-shaped slot, a third walking gap 341 is formed between the two clamping blocks 34, and the third walking gap 341 is arranged in position with the clamping gap 321, the first walking gap 234 and the second walking gap 51. The band saw blade passes through the three walking gaps at the same time, and the rotating disc 23, the connecting plate 50 and the steering seat 31 can provide reliable torsional force for the band saw blade, and the steering operation of the band saw blade is more stable and reliable.

[0026] The positioning mechanism comprises a first positioning assembly for positioning the steering seat 31 at the first position and a second positioning assembly for positioning the steering seat 31 at the second position. The square assembling block is provided with a first abutting flat wall 3121 and a second abutting flat wall matched with the two sets of positioning assemblies.

[0027] The first positioning assembly comprises a first positioning plate 41 fixed on the assembling frame 10, a first adjusting screw hole 411 is formed on the first positioning plate 41, and a first positioning stud is arranged in the first adjusting screw hole 411; when the steering seat 31 is located at the first position, the first abutting flat wall 3121 abuts against the front end of the first positioning stud; the second positioning assembly comprises a second positioning plate 42 fixed on the assembling frame 10, a second adjusting screw hole 421 is formed on the second positioning plate 42, and a second positioning stud is arranged in the second adjusting screw hole 421; when the steering seat 31 is located at the second position, the second abutting flat wall abuts against the front end of the second positioning stud. Both of the two positioning assemblies are composed of a positioning plate and a positioning stud, the position of the adjusting stud is adjustable, the influence of the machining error and the assembling error of the positioning plate can be eliminated, the positioning is more accurate, and the steering precision of the band saw blade is improved.

[0028] It should be understood that, in the claims of the utility model, the specification, all "including" should be understood as open meaning, that is, its meaning is equivalent to "at least contains", and should not be understood as closed meaning, that is, its meaning should not be understood as "only contains". The terms "first", "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0029] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the utility model should be covered in the protection scope of the utility model.

Claims

1. A band saw blade twisting apparatus characterized by, The utility model provides a sawing machine, including assembly frame, and drive mechanism, steering mechanism, positioning mechanism are assembled on assembly frame, drive mechanism includes oil cylinder and transmission assembly, transmission assembly includes rack and turntable, rack is fixed with piston rod of oil cylinder, the outer circumferential surface of turntable is equipped with sector tooth in a quarter of area, sector tooth is engaged with rack, and rack is driven under the oil cylinder and carries out reciprocating linear operation, and can drive turntable reciprocating rotation, and the rotation angle of turntable is 90 degrees, steering mechanism includes steering seat and guiding assembly, steering seat is fixed with turntable, and steering seat can reciprocate rotation between first position and second position under the drive of turntable, and when steering seat is located first position, saw blade is located initial position, and when steering seat is located second position, saw blade is twisted 90 degrees, positioning mechanism includes first positioning assembly that positions steering seat in first position and second positioning assembly that positions steering seat in second position.

2. A band saw blade twisting device according to claim 1, characterized in that The turntable is located above the steering seat, the first walking gap is provided on the turntable and extends along the radial direction of the turntable.

3. A band saw blade twisting device according to claim 2, characterized in that The assembly frame includes an assembly plate, the turntable is rotatably assembled on the assembly plate, the assembly plate is provided with a rotating hole matched with the turntable and a strip-shaped slot communicated with the rotating hole, and the strip-shaped slot is arranged in position with the first walking gap.

4. A band saw blade twisting apparatus according to claim 3, wherein The turntable is divided into a transmission part and an assembly part along the axial direction, the sector tooth is formed on the outer circumferential surface of the transmission part, and the transmission part and the assembly part are coaxially arranged with the rotating hole.

5. A band saw blade twisting apparatus according to claim 4, wherein The turntable is fixed with the steering seat through a connecting plate, the connecting plate is located below the assembly plate, and the second walking gap is provided on the connecting plate and in position with the first walking gap.

6. A band saw blade twisting apparatus according to claim 5, wherein The steering seat includes a U-shaped assembly block and a square assembly block formed above the U-shaped assembly block, a U-shaped slot is provided on the U-shaped assembly block, and a strip-shaped slot communicated with the U-shaped slot is provided on the square assembly block.

7. A band saw blade twisting device according to claim 6, characterized in that The guiding assembly includes two clamping wheels and a pressing wheel, the two clamping wheels are symmetrically assembled on the bottom of the U-shaped assembly block and have a clamping gap therebetween, and the pressing wheel is rotatably assembled in the U-shaped slot.

8. A band saw blade twisting apparatus according to claim 7, wherein Two clamping blocks are assembled in the strip-shaped slot, a third walking gap is provided between the two clamping blocks, and the third walking gap is arranged in position with the clamping gap, the first walking gap and the second walking gap.

9. A band saw blade twisting device according to any one of claims 6-8, characterized in that The square assembly block is provided with a first abutting flat wall and a second abutting flat wall, the first positioning assembly includes a first positioning plate fixed on the assembly frame, a first adjusting screw hole is provided on the first positioning plate, and a first positioning screw column is assembled in the first adjusting screw hole, and when the steering seat is located in the first position, the first abutting flat wall abuts against the front end of the first positioning screw column.

10. A band saw blade twisting apparatus according to claim 9, wherein The second positioning assembly includes a second positioning plate fixed on the assembly frame, a second adjusting screw hole is provided on the second positioning plate, and a second positioning screw column is assembled in the second adjusting screw hole, and when the steering seat is located in the second position, the second abutting flat wall abuts against the front end of the second positioning screw column.

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