Lifting adjusting mechanism of sewing machine rack

Abstract

The utility model relates to a lifting adjusting mechanism of a sewing machine rack, the adjusting mechanism comprises a driving mechanism and a lifting unit, the lifting unit comprises a nut, a screw rod and a connecting seat, the connecting seat is sleeved on the nut through a bearing, the driving mechanism drives the nut to rotate, and the nut drives the connecting seat to move along the screw rod; the nut is driven by the driving mechanism to enable the connecting base to move up and down along the lead screw, the lifting adjusting mechanism is installed on a rack or a machine base, the height of the rack or a sewing machine workbench can be adjusted at a high speed, and the lifting adjusting mechanism has the advantages of being reasonable in structure and convenient to adjust.

Description

Technical Field

[0001] The utility model relates to a lifting and lowering regulating mechanism, in particular to a lifting and lowering regulating mechanism for a sewing machine frame. Background Art

[0002] The automation procedures of existing industrial sewing machines are becoming increasingly higher. Workers generally stand while operating sewing machines. The heights of existing industrial sewing machine workbenches are almost the same, but the heights of workers are different. Therefore, the mismatch between the workbench height and the height can easily cause fatigue and affect work efficiency. Currently, it is common practice for shorter workers to stand on height-increasing pads to work, which is inconvenient to move and there are safety hazards if they accidentally step on empty space. Utility Model Content

[0003] The utility model aims to provide a lifting and adjusting mechanism for a sewing machine frame, which drives a nut through a driving mechanism to realize the up and down movement of a connecting seat along a screw rod. The lifting and adjusting mechanism is installed on the frame or the base to quickly adjust the height of the frame or the sewing machine worktable, and has the characteristics of reasonable structure and convenient adjustment.

[0004] To achieve the above purpose, the following technical solutions are adopted:

[0005] A lifting and adjusting mechanism for a sewing machine frame is characterized in that: the adjusting mechanism comprises a driving mechanism and a lifting unit, the lifting unit comprises a nut, a screw rod and a connecting seat, the connecting seat is arranged on the nut through a bearing sleeve, the driving mechanism drives the nut to rotate, and the nut drives the connecting seat to move along the screw rod.

[0006] A transmission wheel and a transmission gear are sleeved on the nut, and the output end of the driving mechanism is connected to the transmission wheel and the transmission gear directly or through a transmission belt.

[0007] The connecting seat is provided with a connecting hole, a positioning ring is arranged on the inner wall of the connecting hole, a plane bearing is installed below the positioning ring in the connecting hole, the bottom of the positioning ring abuts against the top surface of the plane bearing, and the plane bearing is sleeved on the nut.

[0008] A ball bearing is installed above the positioning ring in the connecting hole, and the ball bearing is also sleeved on the nut.

[0009] The utility model drives the lifting unit nut to rotate through a driving mechanism, thereby driving the connecting seat to move on the screw rod. When in use, the connecting seat is fixedly connected to the machine base or the frame, the screw rod is longitudinally arranged, and the connecting seat moves on the screw rod to realize the lifting of the frame or the workbench. The utility model has the characteristics of reasonable structure and convenient adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 The utility model is a schematic diagram of the internal structure of the lifting unit. DETAILED DESCRIPTION

[0012] like Figure 1-2 As shown, a lifting and lowering adjustment mechanism of a sewing machine frame, the adjustment mechanism includes a driving mechanism 2 and a lifting unit 1, the lifting unit includes a nut 11, a screw rod 12 and a connecting seat 13, the connecting seat 13 is sleeved on the nut 11 through a bearing, a connecting hole is opened on the connecting seat 13, a positioning ring 14 is arranged on the inner wall of the connecting hole, a plane bearing 31 is installed below the positioning ring in the connecting hole, the bottom of the positioning ring 14 abuts against the top surface of the plane bearing 31, and the plane bearing 31 is sleeved on the nut; a ball bearing 32 is installed above the positioning ring 14 in the connecting hole, and the ball bearing 32 is also sleeved on the nut 11; a transmission wheel and a transmission gear 15 are sleeved on the nut 11, and the output end of the driving mechanism 2 is connected to the transmission wheel and the transmission gear 15 directly or through a transmission belt 16; the driving mechanism 2 drives the nut 11 to rotate, and the nut 11 drives the connecting seat 13 to move along the screw rod 12.

[0013] Since the connecting seat 13 is connected to the machine base or frame, it needs to bear the larger gravity of the machine base or frame. Therefore, in the utility model, a plane bearing 33 is used below the positioning ring 14 of the connecting seat, and a ball bearing 34 is arranged above the positioning ring 32. The double bearing structure improves stability and durability.

[0014] The utility model drives the lifting unit nut to rotate through a driving mechanism, thereby driving the connecting seat to move on the screw rod. When in use, the connecting seat is fixedly connected to the machine base or the frame, the screw rod is longitudinally arranged, and the connecting seat moves on the screw rod to realize the lifting of the frame or the workbench. The utility model has the characteristics of reasonable structure and convenient adjustment.

Claims

1. A lifting and adjusting mechanism for a sewing machine frame, characterized in that: The adjusting mechanism comprises a driving mechanism (2) and a lifting unit (1); the lifting unit comprises a nut (11), a screw rod (12) and a connecting seat (13); the connecting seat (13) is mounted on the nut (11) via a bearing sleeve; the driving mechanism (2) drives the nut (11) to rotate, and the nut (11) drives the connecting seat (13) to move along the screw rod (12).

2. A lifting and adjusting mechanism for a sewing machine frame as claimed in claim 1, characterized in that: The nut (11) is sleeved with a transmission wheel and a transmission gear (15), and the output end of the driving mechanism (2) is connected to the transmission wheel and the transmission gear (15) directly or through a transmission belt (16).

3. A lifting and adjusting mechanism for a sewing machine frame according to claim 1 or 2, characterized in that: The connecting seat (13) is provided with a connecting hole, a positioning ring (14) is provided on the inner wall of the connecting hole, a plane bearing (31) is installed below the positioning ring in the connecting hole, the bottom of the positioning ring (14) abuts against the top surface of the plane bearing (31), and the plane bearing (31) is sleeved on the nut.

4. A lifting and adjusting mechanism for a sewing machine frame as claimed in claim 3, characterized in that: A ball bearing (32) is installed above the positioning ring (14) in the connecting hole, and the ball bearing (32) is also sleeved on the nut (11).

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