Crank arm type edge folding sewing machine with oil supply structure

Abstract

The utility model belongs to the technical field of crank arm type edge folding and sewing machines, and particularly relates to a crank arm type edge folding and sewing machine with an oil supply structure, which comprises a machine base, a lower shaft device and an upper shaft device are arranged in the machine base, and the lower shaft device and the upper shaft device are connected through a synchronous belt; the oil box is installed below the machine base and used for storing lubricating oil; the engine arm oil supply device is arranged in the oil box and is used for supplying oil to lubricate the lower shaft device; the machine head oil supply device is arranged in the oil box and is used for supplying oil to lubricate the upper shaft device; the transmission device is installed in the machine base and used for transmitting power of the upper shaft device to the machine arm oil supply device and the machine head oil supply device, oil supply operation of the machine arm oil supply device and the machine head oil supply device is achieved, it is guaranteed that each assembly can be stably and sufficiently lubricated, and abrasion of parts is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a curved arm type hemming and sewing machine, in particular to a curved arm type hemming and sewing machine with an oil supply structure. Background Art

[0002] The curved arm hemming sewing machine, also known as the curved arm sewing machine, is suitable for sewing large, heavy or complex-shaped items, such as the sewing of columnar structures such as sleeves and trouser legs of some clothes. Its overall appearance structure and part of the internal structure are disclosed in both Chinese patents 201510697883.0 and 200820199507.4.

[0003] Most of the existing curved arm hemming sewing machines are lubricated manually or refueled by an oil pump. For example, a Chinese patent with publication number CN106167960B discloses an automatic circulation oil supply system for a special sewing machine, which includes an arm oil supply oil circuit, a head oil supply oil circuit, a head constant oil circuit, a main constant pressure overflow oil circuit and an oil outlet device, and oil supply is achieved through an oil pump assembly. However, it still has some shortcomings in that an oil pump is used to lubricate the components in the head and the base at the same time. However, this method has the problem of uncontrollable oil supply, and it is easy to have too much oil supply to the head and insufficient oil supply to the base, resulting in poor lubrication effect, accelerated wear of parts, and shortening the service life of the machine. Summary of the invention

[0004] The purpose of the utility model is to provide a curved arm hemming sewing machine with an oil supply structure, wherein the lower shaft device is supplied with oil and lubricated by the machine arm oil supply device, and the upper shaft device is supplied with oil and lubricated by the machine head oil supply device, thereby improving the problem that the sewing machine is supplied with oil by an oil pump, resulting in uncontrollable oil supply.

[0005] The purpose of the utility model is achieved in this way:

[0006] A curved arm hemming sewing machine with an oil supply structure, comprising:

[0007] A machine base, in which a lower shaft device and an upper shaft device are arranged, and the lower shaft device and the upper shaft device are connected by a synchronous belt;

[0008] An oil box, which is installed below the machine base and is used to store lubricating oil;

[0009] An arm oil supply device, which is arranged in the oil box and is used for supplying oil and lubricating the lower shaft device;

[0010] A machine head oil supply device, which is arranged in the oil box and is used for supplying oil and lubricating the upper shaft device;

[0011] The transmission device is installed in the machine base and is used to transmit the power of the upper shaft device to the arm oil supply device and the head oil supply device to realize the oil supply operation of the arm oil supply device and the head oil supply device.

[0012] Preferably, the arm oil supply device has:

[0013] An oil pump 1, which is disposed in the oil box and is movably connected to the transmission device;

[0014] An oil supply pipeline 1, with two ends thereof respectively connected to the oil pump 1 and the lower shaft device;

[0015] An oil return pipeline 1, two ends of which are respectively connected to the lower shaft device and the oil box;

[0016] An oil distribution valve is arranged at one end of the oil supply pipeline located at the lower shaft device;

[0017] A plurality of oil distribution pipes are connected to the oil distribution valves and are used to transport the lubricating oil to a designated location.

[0018] Preferably, the end of the oil distribution pipe 1 is connected to an oil distribution seat, and a plurality of oil distribution pipes 2 are arranged on the oil distribution seat for delivering the lubricating oil to a designated location.

[0019] Preferably, the head oil supply device has:

[0020] Oil pump 2, which is arranged in the oil box and movably connected to the transmission device;

[0021] The second oil supply pipeline, two ends of which are respectively connected to the second oil pump and the upper shaft device;

[0022] The second oil return pipeline has two ends connected to the upper shaft device and the second oil pump respectively.

[0023] Preferably, the upper shaft device has a main shaft, a shaft sleeve is provided on the main shaft, an oil inlet hole is opened on one side end of the shaft sleeve, and the oil supply pipeline 2 is movably connected to the oil inlet hole 1 to realize oil supply between the main shaft and the shaft sleeve 1.

[0024] Preferably, the main shaft is hollow inside, and a second oil inlet hole is opened on the main shaft, and the second oil inlet hole conducts the inside of the main shaft and the outside;

[0025] The main shaft is sleeved with a plurality of shaft sleeves 2, and the main shaft is provided with an oil outlet hole, the oil outlet hole is connected to the inside of the main shaft and the outside,

[0026] The lubricating oil flows into the interior of the main shaft through the second oil inlet hole, and then flows into between the main shaft and the second shaft sleeve through the oil outlet hole.

[0027] Preferably, a strip groove is provided on the outer side wall of the main shaft, the strip groove is provided with the second oil inlet hole and the oil outlet hole, the first sleeve and the second sleeve are both located at the strip groove of the main shaft, and the strip groove is used to contain lubricating oil.

[0028] Preferably, a fixing plate is provided in the oil box, and a plurality of openings are provided on the fixing plate. The upper ends of the oil pump 1 of the arm oil supply device and the oil pump 2 of the head oil supply device are both snapped into the openings, so that the oil pump 1 and the oil pump 2 are installed in the oil box.

[0029] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0030] 1. The utility model supplies oil and lubricates the lower shaft device through the arm oil supply device, and the head oil supply device supplies oil and lubricates the upper shaft device. The two oil supply devices are used to supply oil separately, which can ensure that the head and each component inside the base of the sewing machine can be stably and adequately lubricated, thereby reducing the wear between the various parts in the components and extending the service life of the sewing machine.

[0031] 2. The utility model designs an oil supply pipe of the arm oil supply device, one end of which is connected to an oil distribution valve. The oil distribution valve supplies oil and lubrication to parts at different positions through the oil distribution pipe, ensuring that each part can be lubricated and reducing wear between parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is one of the structural schematic diagrams of the utility model.

[0033] Figure 2 This is the second structural schematic diagram of the present utility model.

[0034] Figure 3 It is a partial exploded view of the oil supply device and upper shaft device of the machine head of the utility model.

[0035] Figure 4 This is the third structural diagram of the present utility model.

[0036] : 1. base; 2. arm oil supply device; 21. oil pump 1; 22. oil supply pipeline 1; 23. oil return pipeline 1; 24. oil distribution valve; 25. oil distribution pipeline 1; 26. oil distribution seat; 27. oil distribution pipeline 2; 3. head oil supply device; 31. oil pump 2; 32. oil supply pipeline 2; 33. oil return pipeline 2; 4. lower shaft device; 5. upper shaft device; 51. main shaft; 511. oil inlet hole 2; 512. oil outlet hole; 52. shaft sleeve 1; 521. oil inlet hole 1; 53. shaft sleeve 2; 54. strip groove; 6. oil box; 61. fixing plate; 611. opening; 7. transmission device. DETAILED DESCRIPTION

[0037] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 As shown, a crank-arm hemming sewing machine with an oil supply structure comprises: a machine base 1, in which a lower shaft device 4 and an upper shaft device 5 are arranged, and the lower shaft device 4 and the upper shaft device 5 are connected by a synchronous belt; an oil box 6, which is installed below the machine base 1 and is used to store lubricating oil; an arm oil supply device 2, which is arranged in the oil box 6 and is used for oil supply and lubrication of the lower shaft device 4; a head oil supply device 3, which is arranged in the oil box 6 and is used for oil supply and lubrication of the upper shaft device 5; a transmission device 7, which is installed in the machine base 1 and is used to transmit the power of the upper shaft device 5 to the arm oil supply device 2 and the head oil supply device 3, so as to realize the oil supply operation of the arm oil supply device 2 and the head oil supply device 3;

[0039] The lower shaft device 4 and the upper shaft device 5 are respectively supplied with oil through the arm oil supply device 2 and the head oil supply device 3, so that the lower shaft device 4 and the upper shaft device 5 can obtain corresponding lubricating oil, thereby ensuring that the internal parts structure of the two are better lubricated, reducing the wear between the parts, and extending the service life, such as the meshing between the gears, the connection between the rotating shaft and the sleeve, the meshing between the universal connectors, etc.

[0040] Combination Figure 2 and Figure 4 The arm oil supply device 2 comprises: an oil pump 21, which is arranged in the oil box 6, and the oil pump 21 is movably connected to the transmission device 7; an oil supply pipeline 22, both ends of which are respectively connected to the oil pump 21 and the lower shaft device 4; an oil return pipeline 23, both ends of which are respectively connected to the lower shaft device 4 and the oil box 6; an oil distribution valve 24, which is arranged at one end of the oil supply pipeline 22 located at the lower shaft device 4; a plurality of oil distribution pipes 25, which are connected to the oil distribution valve 24 and are used to transport the lubricating oil to a designated position, and the designated position is a connection structure of the lower shaft device 4 located in the arm, such as meshing between gears, connection or meshing between universal joints, and penetration connection between a rotating rod and a sleeve.

[0041] In order to further achieve the corresponding lubrication effect inside the machine arm (i.e., between the connecting structures inside the lower shaft device 4), an oil distribution seat 26 is connected to the end of the oil distribution pipe 25, and a plurality of oil distribution pipes 27 are arranged on the oil distribution seat 26 for delivering the lubricating oil to the designated position. The oil distribution seat 26 can cooperate with the oil distribution valve 24 to further subdivide the oil circuit. Because the internal structure of the lower shaft device 4 occupies a large area, if the oil is supplied directly through the oil distribution valve 24 and the oil distribution pipe 25, it is necessary to lengthen the oil distribution pipe 25. However, lengthening the oil distribution pipe 25 will cause the front end of the oil distribution pipe 25 to lack fixation and shake, making it difficult to accurately deliver the oil to the designated position, affecting the lubrication effect.

[0042] Combination Figure 2 and Figure 3 The head oil supply device 3 comprises: an oil pump 31, which is arranged in the oil box 6, and the oil pump 31 is movably connected to the transmission device 7; an oil supply pipeline 32, both ends of which are respectively connected to the oil pump 31 and the upper shaft device 5; an oil return pipeline 33, both ends of which are respectively connected to the upper shaft device 5 and the oil pump 31, and an oil cavity is formed at the front end of the outer shell of the upper shaft device 5. When the lubricating oil flows out from the main shaft 51, the excess lubricating oil will be stored in the oil cavity, and one end of the oil return pipeline 33 is connected to the oil cavity.

[0043] Combination Figure 2 and Figure 3 The upper shaft device 5 has a main shaft 51, a sleeve 52 is sleeved on the main shaft 51, an oil inlet hole 521 is opened at the side end of the sleeve 52, and an oil supply pipeline 32 is movably connected to the oil inlet hole 521 to realize oil supply between the main shaft 51 and the sleeve 52; the sleeve is fixed in the outer shell of the upper shaft device 5 to realize the rotation of the main shaft 51 in the outer shell.

[0044] Look specifically Figure 3 The main shaft 51 is hollow inside, and is provided with an oil inlet hole 511, which connects the inside of the main shaft 51 with the outside. The main shaft 51 is sleeved with a plurality of shaft sleeves 53, and the outer sides of the shaft sleeves 53 are connected to the outer shell. The main shaft 51 is provided with an oil outlet hole 512, which connects the inside of the main shaft 51 with the outside. The lubricating oil flows into the inside of the main shaft 51 through the oil inlet hole 511, and then flows into between the main shaft 51 and the shaft sleeve 53 through the oil outlet hole 512, and the excess lubricating oil flows from the front end of the main shaft 51 into the oil chamber described above.

[0045] like Figure 3 As shown, a strip groove 54 is provided on the outer wall of the main shaft 51. The strip groove 54 is a threaded hole or an annular hole. The strip groove 54 is provided with an oil inlet hole 2 511 and an oil outlet hole 512. The shaft sleeve 1 52 and the shaft sleeve 2 53 are both sleeved on the strip groove 54 on the main shaft 51. The strip groove 54 is used to contain lubricating oil, so that the main shaft 51 can rotate in the shaft sleeve 1 52 and the shaft sleeve 2 53.

[0046] like Figure 1 A fixing plate 61 is provided in the oil box 6, and a plurality of openings 611 are provided on the fixing plate 61. The upper ends of the oil pump 1 21 and the oil pump 2 31 are clamped in the openings 611, so that the oil pump 1 21 and the oil pump 2 31 are installed in the oil box 6.

[0047] The specific structures of the lower shaft device 4 and the upper shaft device 5 can be referred to as disclosed in Chinese patent CN201510697883.0, which will not be described here.

[0048] The transmission device 7 has two vertical shafts, and the upper end of each vertical shaft is meshed with the main shaft 51 through a pair of bevel gears. When the main shaft 51 rotates, the main shaft 51 drives the vertical shaft to rotate through the meshing of the bevel gears, and the vertical shaft drives the oil pump 1 21 and the oil pump 2 31 to supply oil. The specific structure of the oil pump 1 21 and the oil pump 2 31 can be referred to as disclosed in Chinese patent CN106167960B, which will not be repeated here.

[0049] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A curved arm hemming sewing machine with an oil supply structure, characterized in that: include: A machine base (1) is provided with a lower shaft device (4) and an upper shaft device (5), wherein the lower shaft device (4) and the upper shaft device (5) are connected via a synchronous belt; An oil box (6), which is installed below the machine base (1) and is used to store lubricating oil; An arm oil supply device (2), which is arranged in the oil box (6) and is used to supply oil and lubricate the lower shaft device (4); A machine head oil supply device (3), which is arranged in the oil box (6) and is used to supply oil and lubricate the upper shaft device (5); A transmission device (7) is installed in the machine base (1) and is used to transmit the power of the upper shaft device (5) to the machine arm oil supply device (2) and the machine head oil supply device (3), thereby realizing the oil supply operation of the machine arm oil supply device (2) and the machine head oil supply device (3).

2. The curved arm hemming sewing machine with an oil supply structure according to claim 1, characterized in that: The arm oil supply device (2) comprises: An oil pump (21) is disposed in the oil box (6), and the oil pump (21) is movably connected to the transmission device (7); An oil supply pipeline (22), the two ends of which are respectively connected to the oil pump (21) and the lower shaft device (4); An oil return pipeline (23) having two ends connected to the lower shaft device (4) and the oil box (6) respectively; An oil distribution valve (24) is arranged at one end of the oil supply pipeline (22) located at the lower shaft device (4); A plurality of oil distribution pipes (25) are connected to the oil distribution valve (24) and are used to transport lubricating oil to a designated location.

3. The curved arm hemming sewing machine with an oil supply structure according to claim 2, characterized in that: The end of the oil distribution pipe 1 (25) is connected to an oil distribution seat (26), and a plurality of oil distribution pipes 2 (27) are arranged on the oil distribution seat (26) for delivering lubricating oil to a designated location.

4. A curved arm hemming sewing machine with an oil supply structure according to any one of claims 1 to 3, characterized in that: The machine head oil supply device (3) comprises: Oil pump 2 (31), which is arranged in the oil box (6), and oil pump 2 (31) is movably connected to the transmission device (7); The second oil supply pipeline (32) has two ends connected to the second oil pump (31) and the upper shaft device (5) respectively; The second oil return pipeline (33) has two ends connected to the upper shaft device (5) and the second oil pump (31) respectively.

5. The curved arm hemming sewing machine with oil supply structure according to claim 4, characterized in that: The upper shaft device (5) comprises a main shaft (51), a shaft sleeve (52) is sleeved on the main shaft (51), an oil inlet hole (521) is opened at the side end of the shaft sleeve (52), and the oil supply pipeline (32) is movably connected to the oil inlet hole (521) to realize oil supply between the main shaft (51) and the shaft sleeve (52).

6. The curved arm hemming sewing machine with an oil supply structure according to claim 5, characterized in that: The main shaft (51) is hollow inside, and a second oil inlet hole (511) is provided on the main shaft (51), wherein the second oil inlet hole (511) connects the inside of the main shaft (51) with the outside; The main shaft (51) is sleeved with a plurality of shaft sleeves (53). The main shaft (51) is provided with an oil outlet hole (512). The oil outlet hole (512) connects the inside of the main shaft (51) with the outside. The lubricating oil flows into the interior of the main shaft (51) through the second oil inlet hole (511), and then flows into between the main shaft (51) and the second shaft sleeve (53) through the oil outlet hole (512).

7. The curved arm hemming sewing machine with an oil supply structure according to claim 6, characterized in that: The outer wall of the main shaft (51) is provided with a strip groove (54), the strip groove (54) is provided with the second oil inlet hole (511) and the oil outlet hole (512), the first shaft sleeve (52) and the second shaft sleeve (53) are both located at the strip groove (54) of the main shaft (51), and the strip groove (54) is used to contain lubricating oil.

8. The curved arm hemming sewing machine with an oil supply structure according to claim 4, characterized in that: A fixing plate (61) is provided in the oil box (6), and a plurality of openings (611) are provided on the fixing plate (61). The upper ends of the oil pump 1 (21) of the arm oil supply device (2) and the oil pump 2 (31) of the head oil supply device (3) are both snap-fitted into the openings (611), so that the oil pump 1 (21) and the oil pump 2 (31) are installed in the oil box (6).

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