CA2240218C - Saw cutting machine - Google Patents
Saw cutting machine Download PDFInfo
- Publication number
- CA2240218C CA2240218C CA 2240218 CA2240218A CA2240218C CA 2240218 C CA2240218 C CA 2240218C CA 2240218 CA2240218 CA 2240218 CA 2240218 A CA2240218 A CA 2240218A CA 2240218 C CA2240218 C CA 2240218C
- Authority
- CA
- Canada
- Prior art keywords
- drive belt
- rod
- cutting machine
- saw
- saw cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 3
- 230000002459 sustained effect Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/007—Jig saws, i.e. machine saws with a vertically reciprocating narrow saw blade chucked at both ends for contour cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
- Thermistors And Varistors (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention relates to technical field of saw cutting machines. A saw cutting machine that includes a case (1), a base (2), and a working table (15), and wherein supporting rollers (19) that sustain a drive belt (10) are mounted in the case (1), is disclosed. Opposed ends of the drive belt (10) connect, respectively, with a lower rod (12) and an upper rod (18). Drive belt (10) is brought into receiprocating movement by corresponding movement of a sliding rod (4). With drive belt (10) made of flexible material and sliding rod (4) brought into reciprocating movement within a sleeve (5) by an electrical coil (6), various advantages can be achieved including high cutting efficiency, superior cutting quality, large effective operating dimensions of saw blade, big cutting thickness, no idle periods, low noise, low cost and small volume etc.
Description
SAW CUTTING MACHINE
FIELD OF THE INVENTION
The invention relates to technical field of saw cutting machines.
BACKGROUND TO THE INVENTION
Saw cutting machines have been widely used domestically and abroad for many years. After several improvements until now, their structures are tending towards designs where upper and lower rods are mounted on a working table, the rods are rigid, and cutting is performed in up and down movements of a saw blade driven by swinging rods.
The drawbacks of this type of saw cutting machine lie in a small swing amplitude, low cutting to efficiency, small effective operating dimensions of saw blades (the dimensions generally occupy about only one third of saw blade length), limited saw blade cutting thickness, large no-load power consumption, loud vibration noise, inferior cutting quality, restricted modification of it's configuration, etc.
The objects of the present invention are to provide a new and improved saw cutting IS machine enabling the machine to have advantages like high cutting efficiency, superior cutting quality, large effective operating dimensions of saw blade, big cutting thickness, no idle periods, low noise, etc.
SUMMARY OF THE INVENTION
In a broad aspect of the present invention, there is provided a saw cutting machine 2o that comprises a case, a working table, and a supporting base. Supporting rollers are mounted in the case and serve to sustain a drive belt, the drive belt having opposed ends that connect, respectively, with a lower rod and an upper rod. The drive belt, driven by a sliding rod connected to the belt, makes a reciprocating movement which in turn produces reciprocating movement of a saw blade extending between the lower and upper rods.
Preferably, the lower rod is installed in lower rod base, and the upper rod is installed in an upper rod base.
Generally, it is contemplated that at least three supporting rollers will be used to sustain the drive belt. In a preferred embodiment, six of such rollers are used. Further, in a preferred embodiment, the sliding rod is installed in a sliding sleeve. A
coil installed on the sleeve is used to bring the sliding rod into reciprocating movement in the sleeve.
Advantageously, a supporting roller may be mounted on a tightness-adjusting frame. An adjusting handle is installed on the frame is then used regulate the tightness of the saw blade.
to With drive belt 10 made of flexible material, the invention enables the saw blade to be driven with vertical up and down movement. Advantages like high cutting efficiency, superior cutting quality, large effective operating dimensions of saw blade, big cutting thickness, no idle periods, low noise, etc. can be readily acheived. Further, with such a belt, a saw cutting machine can be made into various shapes.
Components such as the sliding rod, sliding sleeve, and coil 6 forming part of the power transmission mechanism, serve advantages like low cost, small volume and low operating noise.
The invention will now be described with reference to the drawing.
BRIEF DESCRIPTION OF THE DRAWING
2o Fig. 1 is a structural schematic diagram of a saw cutting machine in accordance with the present invention.
FIELD OF THE INVENTION
The invention relates to technical field of saw cutting machines.
BACKGROUND TO THE INVENTION
Saw cutting machines have been widely used domestically and abroad for many years. After several improvements until now, their structures are tending towards designs where upper and lower rods are mounted on a working table, the rods are rigid, and cutting is performed in up and down movements of a saw blade driven by swinging rods.
The drawbacks of this type of saw cutting machine lie in a small swing amplitude, low cutting to efficiency, small effective operating dimensions of saw blades (the dimensions generally occupy about only one third of saw blade length), limited saw blade cutting thickness, large no-load power consumption, loud vibration noise, inferior cutting quality, restricted modification of it's configuration, etc.
The objects of the present invention are to provide a new and improved saw cutting IS machine enabling the machine to have advantages like high cutting efficiency, superior cutting quality, large effective operating dimensions of saw blade, big cutting thickness, no idle periods, low noise, etc.
SUMMARY OF THE INVENTION
In a broad aspect of the present invention, there is provided a saw cutting machine 2o that comprises a case, a working table, and a supporting base. Supporting rollers are mounted in the case and serve to sustain a drive belt, the drive belt having opposed ends that connect, respectively, with a lower rod and an upper rod. The drive belt, driven by a sliding rod connected to the belt, makes a reciprocating movement which in turn produces reciprocating movement of a saw blade extending between the lower and upper rods.
Preferably, the lower rod is installed in lower rod base, and the upper rod is installed in an upper rod base.
Generally, it is contemplated that at least three supporting rollers will be used to sustain the drive belt. In a preferred embodiment, six of such rollers are used. Further, in a preferred embodiment, the sliding rod is installed in a sliding sleeve. A
coil installed on the sleeve is used to bring the sliding rod into reciprocating movement in the sleeve.
Advantageously, a supporting roller may be mounted on a tightness-adjusting frame. An adjusting handle is installed on the frame is then used regulate the tightness of the saw blade.
to With drive belt 10 made of flexible material, the invention enables the saw blade to be driven with vertical up and down movement. Advantages like high cutting efficiency, superior cutting quality, large effective operating dimensions of saw blade, big cutting thickness, no idle periods, low noise, etc. can be readily acheived. Further, with such a belt, a saw cutting machine can be made into various shapes.
Components such as the sliding rod, sliding sleeve, and coil 6 forming part of the power transmission mechanism, serve advantages like low cost, small volume and low operating noise.
The invention will now be described with reference to the drawing.
BRIEF DESCRIPTION OF THE DRAWING
2o Fig. 1 is a structural schematic diagram of a saw cutting machine in accordance with the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In Fig. 1, a case 1 and a working table 15 are mounted on a base 2. Six supporting rollers 19 are fitted in case 1, a drive belt 10 being sustained by the rollers. The ends of drive belt 10 are connected with upper rod 18 and lower rod I2.
The use of six supporting rollers 19 enables the definition of a relatively large working region around working table 15. However, it will of course be understood that a greater or lesser number of rollers may be used. As noted above, it is generally contemplated that there will be at least three such rollers.
Drive belt 10 is brought into reciprocating movement by sliding rod 4 which is to installed in sliding sleeve 5. A coil 6 is mounted on sliding sleeve S and is electrically connected with a control circuit 8 by electric wire 7. In order to bring sliding rod 4 into reciprocating movement in sliding sleeve S by coil 6, control circuit 8 may include an oscillating circuit. Holder 3 is mounted on sliding rod 4, and drive belt 10 is fastened with holder 3. Supporting roller 19 on top of upper rod 18 is installed on tightness-adjusting frame 21, and adjusting handle 23 is mounted on the upper end of tightness-adjusting frame 21. When the degree of tightness of saw blade 16 needs to be regulated, handle 23 is adjusted to bring the tightness-adjusting frame 2I into movement, thereby moving supporting roller 19 on top of upper rod 18 to move and to achieve the goal of adjusting saw blade tightness. Drive belt 10 is flexible, for example, it may be made of 2o polyurethane or steel wire. Lower rod 12 is fitted in lower rod base 11, and upper rod I8 is installed in upper rod base 17. Both ends of saw blade 16 are connected with upper rod 18 and lower rod 12 respectively. Saw blade 16 performs vertical movements, its sawteeth being directed in a fixed direction concurrently, and do not incline at an angle.
When the machine is in operation, a power source (not shown) is switched on.
The control circuit then works and drives sliding rod 4 into reciprocating movement. Since drive belt 10 is connected with holder 3, drive belt 10 likewise reciprocates, and further drives saw blade 16 with up and down cutting motion. In Fig. 1, 13 is a pointer, 14 is a scale plate, 20 is a washer, and 22 is a rating nut.
Various modifications and changes to the embodiment that has been described can be made without departing from the scope of the present invention, and will undoubtedly occur to those skilled in the art. The invention is not to be construed as limited to the particular embodiment that has been described and should be understood as encompassing all those embodiments that are within the spirit and scope of the claims that follow.
In Fig. 1, a case 1 and a working table 15 are mounted on a base 2. Six supporting rollers 19 are fitted in case 1, a drive belt 10 being sustained by the rollers. The ends of drive belt 10 are connected with upper rod 18 and lower rod I2.
The use of six supporting rollers 19 enables the definition of a relatively large working region around working table 15. However, it will of course be understood that a greater or lesser number of rollers may be used. As noted above, it is generally contemplated that there will be at least three such rollers.
Drive belt 10 is brought into reciprocating movement by sliding rod 4 which is to installed in sliding sleeve 5. A coil 6 is mounted on sliding sleeve S and is electrically connected with a control circuit 8 by electric wire 7. In order to bring sliding rod 4 into reciprocating movement in sliding sleeve S by coil 6, control circuit 8 may include an oscillating circuit. Holder 3 is mounted on sliding rod 4, and drive belt 10 is fastened with holder 3. Supporting roller 19 on top of upper rod 18 is installed on tightness-adjusting frame 21, and adjusting handle 23 is mounted on the upper end of tightness-adjusting frame 21. When the degree of tightness of saw blade 16 needs to be regulated, handle 23 is adjusted to bring the tightness-adjusting frame 2I into movement, thereby moving supporting roller 19 on top of upper rod 18 to move and to achieve the goal of adjusting saw blade tightness. Drive belt 10 is flexible, for example, it may be made of 2o polyurethane or steel wire. Lower rod 12 is fitted in lower rod base 11, and upper rod I8 is installed in upper rod base 17. Both ends of saw blade 16 are connected with upper rod 18 and lower rod 12 respectively. Saw blade 16 performs vertical movements, its sawteeth being directed in a fixed direction concurrently, and do not incline at an angle.
When the machine is in operation, a power source (not shown) is switched on.
The control circuit then works and drives sliding rod 4 into reciprocating movement. Since drive belt 10 is connected with holder 3, drive belt 10 likewise reciprocates, and further drives saw blade 16 with up and down cutting motion. In Fig. 1, 13 is a pointer, 14 is a scale plate, 20 is a washer, and 22 is a rating nut.
Various modifications and changes to the embodiment that has been described can be made without departing from the scope of the present invention, and will undoubtedly occur to those skilled in the art. The invention is not to be construed as limited to the particular embodiment that has been described and should be understood as encompassing all those embodiments that are within the spirit and scope of the claims that follow.
Claims (7)
1. A saw cutting machine for producing reciprocating movement of a saw blade (16), said saw blade having first and second ends, said machine comprising:
(a) a case (1), a base (2) and a working table (15);
(b) supporting rollers (19) mounted in said case (1);
(c) a drive belt (10) sustained by said supporting rollers (19), a first end of said drive belt (10) connecting with a lower rod (12) connectable with said first end of said saw blade (16), a second end of said drive belt connecting with an upper rod (18) connectable to said second end of said saw blade (16); and, (d) a sliding rod (4) fastened to said drive belt (10) at a position distanced from said lower and upper rods (12, 18), said drive belt (10) being reciprocally drivable by reciprocating movement of said sliding rod (4).
(a) a case (1), a base (2) and a working table (15);
(b) supporting rollers (19) mounted in said case (1);
(c) a drive belt (10) sustained by said supporting rollers (19), a first end of said drive belt (10) connecting with a lower rod (12) connectable with said first end of said saw blade (16), a second end of said drive belt connecting with an upper rod (18) connectable to said second end of said saw blade (16); and, (d) a sliding rod (4) fastened to said drive belt (10) at a position distanced from said lower and upper rods (12, 18), said drive belt (10) being reciprocally drivable by reciprocating movement of said sliding rod (4).
2. A saw cutting machine in accordance with claim 1, wherein said sliding rod (4) is mounted in a sliding sleeve (5) and a coil (6) is installed on said sliding sleeve (5) for reciprocally moving said sliding rod (4) in response to electrical power supplied to said coil.
3. A saw cutting machine in accordance with claim 1, including at least three of said supporting rollers (19).
4. A saw cutting machine in accordance with claim 1, including six of said supporting rollers (19).
5. A saw cutting machine in accordance with claim 1, wherein a supporting roller (19) is mounted on a tightness-adjusting frame (21), and an adjusting handle (23) is installed on said tightness-adjusting frame (21).
6. A saw cutting machine in accordance with claim 1, wherein said drive belt (10) is made of flexible material.
7. A saw cutting machine in accordance with claim 1, wherein said lower rod (12) is fitted in a lower rod base (11), and said upper rod (18) is mounted in an upper rod base (17).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97233276U CN2312089Y (en) | 1997-06-10 | 1997-06-10 | Curved cutting machine |
| CN97233276.6 | 1997-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2240218A1 CA2240218A1 (en) | 1998-12-10 |
| CA2240218C true CA2240218C (en) | 2005-05-24 |
Family
ID=5202984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2240218 Expired - Fee Related CA2240218C (en) | 1997-06-10 | 1998-06-10 | Saw cutting machine |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN2312089Y (en) |
| CA (1) | CA2240218C (en) |
| DE (1) | DE29810446U1 (en) |
| GB (1) | GB2326127B (en) |
| TW (1) | TW401874U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332778C (en) * | 2004-11-19 | 2007-08-22 | 青岛地恩地机电科技股份有限公司 | Steel wire drive scroll saw |
| CN108856883A (en) * | 2018-08-21 | 2018-11-23 | 任广伟 | A kind of electric reciprocating saw |
| CN109227764A (en) * | 2018-10-22 | 2019-01-18 | 苏州昆仑绿建木结构科技股份有限公司 | A kind of curve wood component diced system |
| CN110014519A (en) * | 2019-05-17 | 2019-07-16 | 深圳九福科技股份有限公司 | A multifunctional saw table |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2082114B (en) * | 1980-08-20 | 1984-07-11 | Tonge Robert Fraser | Mechanical fret saw |
| IT1176686B (en) * | 1984-09-07 | 1987-08-18 | Deca Spa | ALTERNATIVE SAW, PROVIDED WITH A VERTICAL BLADE COMMANDED BY INTERCONNECTED SWINGING ARMS, MOVED BY AN ECCENTRIC MECHANISM |
| JPH01503288A (en) * | 1987-05-22 | 1989-11-09 | メフィナ エス ア | Machine Tools |
| GB8712702D0 (en) * | 1987-05-29 | 1987-07-01 | Charman P R | Sawing machines |
-
1997
- 1997-06-10 CN CN97233276U patent/CN2312089Y/en not_active Expired - Fee Related
-
1998
- 1998-06-10 DE DE29810446U patent/DE29810446U1/en not_active Expired - Lifetime
- 1998-06-10 CA CA 2240218 patent/CA2240218C/en not_active Expired - Fee Related
- 1998-06-10 GB GB9812370A patent/GB2326127B/en not_active Expired - Fee Related
- 1998-06-29 TW TW87210385U patent/TW401874U/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB9812370D0 (en) | 1998-08-05 |
| DE29810446U1 (en) | 1998-09-03 |
| CA2240218A1 (en) | 1998-12-10 |
| CN2312089Y (en) | 1999-03-31 |
| TW401874U (en) | 2000-08-11 |
| GB2326127A (en) | 1998-12-16 |
| GB2326127B (en) | 2001-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |