Drilling equipment for machining lower shaft crank of sewing machine

Abstract

The utility model relates to the field of drilling equipment, and discloses sewing machine lower shaft crank machining drilling equipment which comprises a base, a supporting column is fixedly connected to the upper surface of the base, a motor is fixedly connected to the top of the supporting column, a fixing mechanism is arranged on the upper surface of the base, and a collecting mechanism is arranged on the upper surface of the base. The fixing mechanism comprises a first hydraulic rod, the first hydraulic rod is fixedly connected to the top of the base, the output end of the first hydraulic rod is fixedly connected with a workbench, an extrusion plate is slidably connected to the interior of the workbench, and a bearing column is fixedly connected to the bottom of the extrusion plate. According to the crankshaft fixing device, a second hydraulic rod is started to push connecting columns at the two ends, the connecting columns drive bearing columns on the same side, the bearing columns drive rotating arms to enable rotating plates to rotate, meanwhile, the four bearing columns drive extrusion plates to contract inwards to clamp crankshafts, and the effect that the crankshaft fixing device can fix crankshafts of different specifications is achieved; and the machined crankshaft can be fixed more effectively.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment, and in particular to a drilling equipment for machining the lower shaft crank of a sewing machine. Background Technology

[0002] Sewing machines are widely used in the textile, garment, and leather industries, primarily for stitching different materials together to complete various sewing processes. During operation, the lower crankshaft is a key component of the drive system, responsible for transmitting power from the motor to the needle to complete the cyclic operation. Precise machining of the lower crankshaft is crucial for the normal operation of the sewing machine, especially during drilling, where the accuracy and consistency of the hole positions must be ensured. Therefore, designing an efficient and precise lower crankshaft drilling device can improve production efficiency, reduce machining errors, and extend the service life of the sewing machine. This lower crankshaft drilling device mainly uses a simple positioning device and a motor-driven drill bit to perform the drilling operation on the workpiece.

[0003] Existing drilling mechanisms for sewing machine lower shaft cranks typically employ a relatively traditional mechanical structure design. They generally include a fixed work platform for placing the lower shaft crank workpiece to be processed. Above the work platform, a vertically movable drilling device is installed, equipped with only a simple positioning mechanism. This device uses a motor to drive the drill bit to rotate, achieving the drilling operation on the workpiece. However, this equipment has certain limitations. For example, when processing crankshafts of different specifications, the lack of a reliable fixing device leads to insecure fixing during drilling, causing drilling angle deviation and resulting in processing failure. Therefore, this paper proposes a new drilling device for sewing machine lower shaft cranks to solve these problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a drilling device for machining the lower shaft crank of a sewing machine, which aims to improve the problem that it is inconvenient to drill and fix cranks of different specifications in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A drilling device for processing the lower shaft crank of a sewing machine includes a base, a support column fixedly connected to the upper surface of the base, a motor fixedly connected to the top of the support column, a fixing mechanism provided on the upper surface of the base, and a collecting mechanism provided on the upper surface of the base.

[0007] The fixing mechanism includes a hydraulic rod one, which is fixedly connected to the top of the base. A worktable is fixedly connected to the output end of the hydraulic rod one. An extrusion plate is slidably connected inside the worktable. A receiving column is fixedly connected to the bottom of the extrusion plate. A rotating arm is rotatably connected to the side wall of the receiving column. A rotating plate is rotatably connected to the bottom of the worktable. The rotating arm is rotatably connected to the bottom of the rotating plate. A connecting column is fixedly connected to the bottom of the receiving column on the opposite side. A hydraulic rod two is arranged between the connecting columns on the opposite side.

[0008] As a further description of the above technical solution:

[0009] The collection mechanism includes a bellows, which is fixedly connected to the top of the base. A fan is fixedly connected inside the bellows, and a filter screen is slidably connected inside the bellows. A sleeve is fitted outside the drilling end of the drilling machine, and a collection cover is provided outside the sleeve. An exhaust pipe is fixedly connected inside the collection cover, and one end of the exhaust pipe is fixedly connected inside the bellows.

[0010] As a further description of the above technical solution:

[0011] A limiting ring is fixedly connected to the side wall of the sleeve, and a sliding ring is fixedly connected to the top of the collection cover. The sliding ring is slidably connected to the side wall of the sleeve, and the collection cover is made of acrylic material.

[0012] As a further description of the above technical solution:

[0013] A collection box is slidably connected inside the fan box, and the filter screen is located between the fan and the collection box.

[0014] As a further description of the above technical solution:

[0015] A rubber pad is fixedly connected to the side wall of the extrusion plate.

[0016] As a further description of the above technical solution:

[0017] The top of the filter screen is fixedly connected to a handle, which makes it easy to remove the filter screen from inside the air box.

[0018] As a further description of the above technical solution:

[0019] The top of the collection box is equipped with a sealing strip to fill the gap between the collection box and the bellows.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by activating the second hydraulic rod to push the connecting columns at both ends, during the pushing process, the connecting columns at both ends drive the receiving columns on the same side. The receiving columns drive the rotating arm to rotate the rotating plate. At the same time, the four receiving columns drive the extrusion plate to retract inward to clamp the crankshaft, and the crankshaft is further fixed by the rubber pad. Then, the first hydraulic rod is activated to raise the worktable until the crankshaft is in contact with the drill bit, which can more effectively fix the processed crankshaft. This solves the problem that it is not convenient to fix crankshafts of different specifications when drilling and processing crankshafts on a traditional worktable. The above method improves the flexibility and adaptability of the equipment.

[0022] 2. In this utility model, after the bottom of the collection cover contacts the workbench, the sliding ring on the collection cover will slide upward along the sleeve, so that the collection cover can cover the working area. Then, the bellows is started to run the fan to exhaust air, so that the iron filings splashed out when drilling the crankshaft are blocked by the collection cover and collected into the collection box through the exhaust pipe, achieving the effect of waste chip collection. This solves the problem of the difficulty in collecting waste chips in traditional workbenches and can protect the workbench fixing device from being blocked. The above method improves the efficiency of cleaning. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a drilling device for machining the lower shaft crank of a sewing machine according to the present invention;

[0024] Figure 2 This is a schematic diagram of the worktable of a drilling device for machining the lower shaft crank of a sewing machine, as proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the bellows structure of a drilling device for machining the lower shaft crank of a sewing machine, as proposed in this utility model.

[0026] Figure 4 This is a cross-sectional view of the collection cover of a drilling device for machining the lower crankshaft of a sewing machine, as proposed in this utility model.

[0027] Legend:

[0028] 1. Base; 2. Support column; 3. Drilling machine; 4. Collection cover; 5. Hydraulic rod one; 6. Workbench; 7. Air box; 8. Rotating plate; 9. Rotating arm; 10. Support column; 11. Extrusion plate; 12. Rubber pad; 13. Connecting column; 14. Hydraulic rod two; 15. Fan; 16. Filter screen; 17. Collection box; 18. Exhaust pipe; 19. Sliding ring; 20. Limiting ring; 21. Sleeve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-2 This utility model provides an embodiment of a sewing machine lower shaft crank drilling device, including a base 1, a support column 2 fixedly connected to the upper surface of the base 1, a motor 3 fixedly connected to the top of the support column 2, a fixing mechanism and a collecting mechanism provided on the upper surface of the base 1; the fixing mechanism includes a hydraulic rod 5, which is fixedly connected to the top of the base 1, and a worktable 6 is fixedly connected to the output end of the hydraulic rod 5; an extrusion plate 11 is slidably connected inside the worktable 6; a receiving column 10 is fixedly connected to the bottom of the extrusion plate 11; a rotating arm 9 is rotatably connected to the side wall of the receiving column 10; a rotating plate 8 is rotatably connected to the bottom of the worktable 6; the rotating arm 9 is rotatably connected to the bottom of the rotating plate 8; a connecting column 13 is fixedly connected to the bottom of the receiving column 10 on the opposite side; and a hydraulic rod 14 is provided between the connecting columns 13 on the opposite side.

[0031] When using this equipment to drill holes in the lower crankshaft of a sewing machine, the crank to be processed is first placed in the center of the worktable 6. Then, hydraulic rod 14 is activated, pushing the connecting columns 13 at both ends. During this pushing process, the connecting columns 13 drive the connected receiving columns 10 to move synchronously. The movement of the receiving columns 10 causes the rotating arm 9 to deflect, which in turn drives the rotating plate 8 to rotate. This series of linkages ensures that all the receiving columns 10 move synchronously, ultimately causing the pressing plate 11 to contract inward, thereby clamping the crankshaft. During this process, the rotating plate 8 acts as the central axis, effectively ensuring that all the receiving columns 10 move on the same horizontal line, guaranteeing the synchronous movement of the pressing plate 11. It is worth noting that during the extrusion process, the rubber pad 12 on the extrusion plate 11 will deform. This deformation can further enhance the clamping effect on the crankshaft. After confirming that the crankshaft has been firmly fixed, the hydraulic rod 5 is then started. The hydraulic rod 5 will gradually raise the worktable 6 until the crankshaft and the drill bit are tightly fitted. At this time, the drilling machine 3 is started to officially carry out the drilling operation on the crankshaft.

[0032] Reference Figures 3-4The collection mechanism includes a bellows 7, which is fixedly connected to the top of the base 1. A fan 15 is fixedly connected inside the bellows 7, and a filter screen 16 is slidably connected inside the bellows 7. A sleeve 21 is fitted outside the drilling end of the drilling machine 3, and a collection cover 4 is provided outside the sleeve 21. An exhaust pipe 18 is fixedly connected inside the collection cover 4, and one end of the exhaust pipe 18 is fixedly connected inside the bellows 7. A limit ring 20 is fixedly connected to the side wall of the sleeve 21, and a sliding ring 19 is fixedly connected to the top of the collection cover 4. The sliding ring 19 is slidably connected to the side wall of the sleeve 21. The collection cover 4 is made of acrylic material. A collection box 17 is slidably connected inside the bellows 7. The filter screen 16 is located between the fan 15 and the collection box 17. A handle is fixedly connected to the top of the filter screen 16 to facilitate the removal of the filter screen 16 from inside the bellows 7. A sealing strip is provided on the top of the collection box 17 to fill the gap between the collection box 17 and the bellows 7.

[0033] When the drilling machine is drilling the crankshaft, the drilling machine 3 will start drilling the crank, generating waste iron filings. At this time, after the bottom of the collection cover 4 contacts the worktable 6, the sliding ring 19 on the collection cover 4 will slide upward along the sleeve 21, causing the collection cover 4 to slide upward. The collection cover 4 is made of transparent acrylic material, which will not affect the observation of the drill bit operation. Moreover, because of the presence of the sleeve 21, the collection cover 4 will not affect the downward movement of the drill bit, and can always cover the working area well. At this time, the fan 15 is started to exhaust the air inside the collection cover 4. The iron filings splashed during drilling will be blocked by the collection cover 4 and sucked into the air box 7 through the exhaust pipe 18. The iron filings entering the air box 7 will be blocked by the filter screen 16 and fall into the collection box 17, so that the iron filings will not enter the fan 15 and cause damage. After the work is finished, the collection box 17 can be pulled out to empty the iron filings. At the same time, the filter screen 16 can be pulled out by the handle for cleaning, ensuring that the equipment can be used repeatedly for a long time.

[0034] Working principle: When drilling holes in the lower shaft crank of a sewing machine using this equipment, the crank is placed in the center of the worktable 6. Hydraulic rod 2 14 is activated to push the connecting columns 13 at both ends. During this pushing process, the connecting columns 13 at both ends drive the connected receiving columns 10 to move. The movement of the receiving columns 10 further drives the rotating arm 9 to deflect, which in turn drives the rotating plate 8 to rotate. This causes all the receiving columns 10 to move synchronously, resulting in the extrusion plate 11 contracting inward and clamping the crankshaft. During the extrusion process, the rubber pad 12 on the extrusion plate 11 deforms, further clamping the crankshaft. After fixing, hydraulic rod 1 5 is activated again to raise the worktable 6. The crankshaft is brought into contact with the drill bit. At the same time, after the bottom of the collection cover 4 contacts the worktable 6, the sliding ring 19 on the collection cover 4 will slide upward along the sleeve 21, so that the collection cover 4 can cover the working area. The drilling machine 3 is started to drill the crankshaft. While drilling, the fan 15 is started to run to exhaust air. The iron filings splashed during drilling will be blocked by the collection cover 4 and enter the air box 7 through the exhaust pipe 18. The iron filings entering the air box 7 will be blocked by the filter screen 16 and fall into the collection box 17. After the work is finished, the iron filings can be poured out by pulling out the collection box 17 by the handle, or the filter screen 16 can be cleaned by pulling out the handle.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sewing machine under shaft crank machining drilling apparatus comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a support column (2), the top of the support column (2) is fixedly connected with a drilling machine (3), the upper surface of the base (1) is provided with a fixing mechanism, and the upper surface of the base (1) is provided with a collecting mechanism. The fixing mechanism comprises a hydraulic rod one (5), the hydraulic rod one (5) is fixedly connected at the top of the base (1), the output end of the hydraulic rod one (5) is fixedly connected with a workbench (6), the inside of the workbench (6) is slidably connected with an extrusion plate (11), the bottom of the extrusion plate (11) is fixedly connected with a receiving column (10), the side wall of the receiving column (10) is rotatably connected with a rotating arm (9), the bottom of the workbench (6) is rotatably connected with a rotating plate (8), the rotating arm (9) is rotatably connected at the bottom of the rotating plate (8), the bottom of the receiving column (10) is fixedly connected with a connecting column (13) on the opposite side, and the hydraulic rod two (14) is arranged between the connecting columns (13) on the opposite sides.

2. A sewing machine lower shaft crank machining drilling apparatus according to claim 1, characterized in that: The collecting mechanism comprises a wind box (7), the wind box (7) is fixedly connected at the top of the base (1), the inside of the wind box (7) is fixedly connected with a fan (15), the inside of the wind box (7) is slidably connected with a filter screen (16), the outside of the drilling end of the drilling machine (3) is sleeved with a sleeve (21), the outside of the sleeve (21) is provided with a collecting cover (4), the inside of the collecting cover (4) is fixedly connected with an air extraction pipe (18), and one end of the air extraction pipe (18) is fixedly connected inside the wind box (7).

3. A sewing machine lower shaft crank machining drilling apparatus according to claim 2, characterized in that: The side wall of the sleeve (21) is fixedly connected with a limiting ring (20), the top of the collecting cover (4) is fixedly connected with a sliding ring (19), the sliding ring (19) is slidably connected with the side wall of the sleeve (21), and the collecting cover (4) is made of acrylic material.

4. A sewing machine lower shaft crank machining drilling apparatus according to claim 2, characterized in that: The inside of the wind box (7) is slidably connected with a collecting box (17), and the filter screen (16) is located between the fan (15) and the collecting box (17).

5. A sewing machine lower shaft crank machining and drilling apparatus according to claim 1, characterized in that: The side wall of the extrusion plate (11) is fixedly connected with a rubber pad (12).

6. A sewing machine lower shaft crank machining drilling apparatus according to claim 2, characterized in that: The top of the filter screen (16) is fixedly connected with a handle, so as to facilitate taking out the filter screen (16) from the inside of the wind box (7).

7. A sewing machine lower shaft crank machining and drilling apparatus according to claim 4, characterized in that: The top of the collecting box (17) is provided with a sealing strip for filling the gap between the collecting box (17) and the wind box (7).

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