Lubricating system of splicing machine

Abstract

The utility model provides a lubricating system of a sewing machine, and belongs to the technical field of sewing machines. The lubricating system solves the technical problem that oil path simplification and lubrication sufficiency of an existing lubricating system of the sewing machine are difficult to consider at the same time. The piecing machine in the lubricating system of the piecing machine comprises a machine shell, a transmission main shaft and a co-moving shaft which are parallel to each other are arranged in the machine shell, the lubricating system comprises an oil pump arranged in the machine shell and an oil feeding disc capable of leaking oil downwards, the oil feeding disc is located over the transmission main shaft, a three-way piece is fixedly arranged on the oil feeding disc, and the three-way piece is connected with the transmission main shaft. An oil outlet pipe of the oil pump is communicated with an oil inlet end of the three-way piece, a first oil outlet end of the three-way piece is communicated into the oiling disc, a second oil outlet end of the three-way piece is connected with an oil distributing pipe, and an oil outlet end of the oil distributing pipe is arranged close to the co-moving shaft. According to the utility model, the lubrication sufficiency is improved while the simplification of the oil path structure is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of stitching machines and relates to a lubrication system of a stitching machine. Background Art

[0002] The patchwork sewing machine can sew the edges of two pieces of cloth together, so the industry calls it a patchwork sewing machine. The patchwork sewing machine generally includes a main housing and a lower housing located below the main housing. In order to avoid blocking the operator's line of sight, the main housing and the lower housing are connected through a transverse connecting portion arranged downwardly and tilted, so that the operator's line of sight can observe the sewing area through the upper part of the transverse connecting portion. For this reason, a crank-arm sewing machine structure with the authorization announcement number CN205275921U is provided between the main housing and the lower housing, and a transverse connecting portion extending downwardly from the inner side surface of one end of the main housing and connected to the lower housing is provided, so that the operator can maintain a good sitting posture; and in order to adapt to the change of the housing shape to realize the driving of the bottom line swinging member and hook teeth and other components in the sewing area, a cooperative shaft arranged parallel to the main shaft is provided in the transverse connecting portion, and the main shaft drives the connecting rod on the cooperative shaft to move through a belt to control the bottom line swinging member and the hook teeth.

[0003] Each transmission component in the sewing machine needs lubricating oil for lubrication. The patent with the authorization announcement number CN2483412Y discloses an automatic oiling device for a zigzag sewing machine, including a lower oil pan that also serves as the chassis of the machine body, an upper oil pan installed on the upper part of the machine body, an oil pump, an oil pipe, and a return pipe that circulate the oil in the upper and lower oil pans; the upper oil pan is connected to a lubrication pipe for lubricating various mechanisms. The oil pump is driven by the machine shaft (lower shaft or vertical shaft) to suck the oil from the lower oil pan to the upper oil pan, and part of the oil in the upper oil pan flows to various parts of the machine body through the lubrication pipe for oiling and lubrication. The excess oil on the upper oil pan and the oil after lubrication of various parts flow back to the lower oil pan through the return oil pipe.

[0004] The above-mentioned lubrication system can achieve lubrication of multiple mechanisms inside the stitching machine, but there are still some shortcomings: the lubricating oil pumped out by the oil pump is distributed by gravity after entering the upper oil pan, and the cooperative shaft in the transverse connecting part controls the transmission of multiple components and has a high lubrication demand. The amount of lubricating oil diverted from the upper oil pan by gravity alone is difficult to achieve sufficient lubrication at this location, and adding an independent oil outlet line from the oil pump to the cooperative shaft will make the oil circuit too complicated. Summary of the invention

[0005] The utility model aims at the above problems existing in the prior art and provides a lubrication system for a sewing machine. The technical problem to be solved by the utility model is that it is difficult to balance the simplification of the oil circuit and the adequacy of lubrication in the prior sewing machine lubrication system.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A lubrication system for a stitching machine, the stitching machine comprises a casing, wherein a parallel transmission main shaft and a cooperating shaft are arranged in the casing, the lubrication system comprises an oil pump arranged in the casing and an upper oil pan capable of leaking oil downward, the upper oil pan is located directly above the transmission main shaft, and is characterized in that a tee is fixedly provided on the upper oil pan, an oil outlet pipe of the oil pump is connected to an oil inlet end of the tee, a first oil outlet end of the tee leads to the upper oil pan, a second oil outlet end of the tee is connected to an oil distribution pipe, and the oil outlet end of the oil distribution pipe is arranged close to the cooperating shaft.

[0008] The casing is used to provide protection and installation basis for the internal mechanism of the stitching machine. The rotation of the transmission main shaft is used to drive the movement of various components. The cooperative shaft is an existing structure, which is arranged in the horizontal connection part of the casing as a transfer support structure for the main shaft power to control the hook tooth movement. The oil pump is an existing device, which is used to extract the lubricating oil at the bottom of the casing and spray it from the top to achieve circulation. The upper oil pan is used to contain the lubricating oil output from the oil pump, so that the lubricating oil flows from the existing oil holes and pipelines at the bottom of the upper oil pan to the transmission main shaft and other mechanisms below to provide lubrication; by fixing a tee on the upper oil pan, the oil outlet pipe of the oil pump is connected to the oil inlet end of the tee, and the first oil outlet end of the tee is connected to the nearest Into the upper oil pan, and connect the oil distribution pipe to the second oil outlet end of the tee, so that the oil outlet end of the oil distribution pipe extends from the upper oil pan to the cooperative shaft. In this way, the pressurized lubricating oil output by the oil pump can be first sent to the tee of the upper oil pan, and then distributed to the upper oil pan and the cooperative shaft by the tee more evenly, thereby ensuring that the mechanisms at the transmission main shaft and the cooperative shaft can obtain relative lubricating oil for sufficient lubrication; at the same time, the oil outlet oil circuit is connected from the oil pump to the upper oil pan and then to the cooperative shaft after transfer. There is no need to add an independent oil outlet oil circuit to the oil pump. The original oil circuit of the upper oil pan is used to make the oil circuit as a whole present a continuous linear shape, thereby improving the lubrication adequacy while ensuring the simplicity of the oil circuit structure.

[0009] In the lubrication system of the above-mentioned stitching machine, a horizontally arranged middle oil pan is fixedly connected in the housing, and the middle oil pan is located directly above the cooperative shaft. The middle oil pan has a plurality of vertically penetrating oil leakage holes, and the oil outlet end of the oil distribution pipe is connected to the middle oil pan. In this way, the lubricating oil flowing out of the oil distribution pipe can first flow into the middle oil pan for storage, and then be distributed to the oil leakage holes to drip downwards to continuously lubricate the various connecting mechanisms on the cooperative shaft to ensure sufficient lubrication.

[0010] In the lubrication system of the above-mentioned seaming machine, the first oil outlet end of the tee is arranged upward, the top of the housing has an observation hole, and the tee is located directly below the observation hole. In this way, when the lubricating oil flows into the upper oil pan, it will flow upward from the first oil outlet end of the tee and then fall into the upper oil pan, which is convenient for the operator to directly check whether the oil outlet state is normal through the observation hole, and is also conducive to slightly increasing the oil outlet resistance of the first oil outlet end to offset the resistance of the oil distribution pipe, so that the flow distribution of the tee is more uniform to ensure sufficient lubrication.

[0011] In the lubrication system of the above-mentioned stitching machine, the top of the second oil outlet end of the tee is higher than the edge of the upper oil pan, which helps to reduce the interference of the edge of the upper oil pan with the oil distribution pipe connected to the second oil outlet end, and avoids the oil distribution pipe being squeezed and blocked to affect the lubrication effect at the cooperative shaft.

[0012] In the lubrication system of the above-mentioned stitching machine, the three-way piece is located at the edge of the upper oil pan close to the side where the cooperative shaft is located. In this way, the oil distribution pipe from the three-way piece to the cooperative shaft is shorter, which is conducive to keeping the oil circuit structure simple.

[0013] In the lubrication system of the above-mentioned stitching machine, the oil outlet end of the oil distribution pipe is fixed in the middle oil pan, which is conducive to keeping the oil outlet end of the oil distribution pipe stable when discharging oil, and avoiding its shaking to affect the smooth collection of lubricating oil into the middle oil pan.

[0014] In the lubrication system of the above-mentioned stitching machine, the casing includes a main casing, a lower casing and a transverse connection part, the transverse connection part is arranged obliquely upward and connected between the main casing and the lower casing, the transmission main shaft and the upper oil pan are located in the main casing, the cooperative shaft is connected in the transverse connection part, the top of the transverse connection part has an inspection port, the cooperative shaft is located directly below the inspection port, and a cover plate for closing the inspection port is fixedly connected to the transverse connection part. The main casing is used to accommodate mechanisms such as the transmission main shaft, the lower casing is used to accommodate existing mechanisms such as the bottom line swinging member and the hook teeth, the transverse connection part is arranged obliquely between the main casing and the lower casing to prevent the main casing from blocking the operator's line of sight, and by arranging the inspection port at the top of the transverse connection part and arranging the cover plate to close the inspection port, it is convenient for the operator to directly maintain the components and oil distribution pipes at the cooperative shaft after opening the cover plate.

[0015] In the lubrication system of the above-mentioned stitching machine, the cover plate is arranged obliquely and the bottom surface abuts against the edge of the side of the middle oil pan away from the transmission main shaft, and the oil outlet end of the oil distribution pipe is arranged toward the edge of the middle oil pan. In this way, even if the lubricating oil in the oil distribution pipe flows fast and rushes out of the edge of the middle oil pan, the cover plate can block the lubricating oil and make it flow back to the middle oil pan, thereby reducing the loss of lubricating oil and ensuring sufficient lubrication at the cooperative shaft.

[0016] In the lubrication system of the above-mentioned stitching machine, the outer peripheral rotating sleeve of the cooperative shaft is provided with a swing arm that can swing around the cooperative shaft to control the hooking action of the stitching machine, the outer periphery of the transmission main shaft is provided with an eccentric wheel, and a transmission connecting rod is provided between the transmission main shaft and the swing arm, one end of the transmission connecting rod is hinged to the eccentric wheel, and the other end of the transmission connecting rod is tilted downward and hinged to the swing arm. In this way, when the transmission main shaft rotates, the eccentric wheel can drive the transmission connecting rod to move back and forth, thereby driving the swing arm on the outer periphery of the cooperative shaft to swing and finally control the hooking action of the stitching machine, and the lubricating oil flowing downward from the upper oil pan to the transmission main shaft can also flow downward along the transmission connecting rod to the swing arm to provide lubrication, thereby improving the lubrication effect.

[0017] Compared with the prior art, the advantages of the utility model are as follows:

[0018] In the lubrication system of the stitching machine, the pressurized lubricating oil output by the oil pump can be first sent to the tee of the upper oil pan, and then evenly distributed to the upper oil pan and the cooperating shaft by the tee, so that both places can obtain relative lubricating oil for sufficient lubrication; at the same time, the oil outlet oil circuit is connected from the oil pump to the upper oil pan and then to the cooperating shaft after transfer, and the original oil circuit of the upper oil pan is used to make the oil circuit as a whole present a continuous linear shape, thereby ensuring that the oil circuit structure is streamlined and the lubrication is more sufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the stitching machine in this embodiment.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the local structure of the stitching machine in this embodiment.

[0021] Figure 3 1 is a schematic diagram of the top view of the stitching machine in this embodiment.

[0022] Figure 4 yes Figure 3 Schematic diagram of the AA section structure.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the transmission main shaft in this embodiment.

[0024] In the figure, 1, housing; 11, observation hole; 12, main housing; 13, lower housing; 14, transverse connecting part; 141, inspection port; 142, cover plate;

[0025] 2. Transmission main shaft; 21. Eccentric wheel;

[0026] 3. Co-operating axis;

[0027] 4. Oil pump; 41. Oil outlet pipe;

[0028] 5. Oil the pan;

[0029] 6. Tee; 61. Oil inlet; 62. First oil outlet; 63. Second oil outlet; 64. Oil distribution pipe;

[0030] 7. Middle oil pan; 71. Oil leakage hole;

[0031] 8. Swing arm; 9. Transmission connecting rod. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] like Figure 1-4 As shown, in the lubrication system of the stitching machine, the stitching machine includes a casing 1, the casing 1 includes a main casing 121, a lower casing 131 and a transverse connecting portion 14, the transverse connecting portion 14 is arranged to be tilted upward and connected between the main casing 121 and the lower casing 131, a transmission main shaft 2 is arranged in the casing 1, an inner wall of the transverse connecting portion 14 is rotatably connected to a cooperative shaft 3 arranged parallel to the transmission main shaft 2, the top of the transverse connecting portion 14 is provided with an inspection port 141, the cooperative shaft 3 is located directly below the inspection port 141, and the transverse connecting portion 14 is fixedly connected to the inspection port 141. 1 is a closed cover plate 142, and the lubrication system includes an oil pump 4 and an upper oil pan 5 arranged in the housing 1. The oil pump 4 is an existing component. The upper oil pan 5 is located just above the transmission main shaft 2. An oil hole facing downward is arranged in the upper oil pan 5. A tee 6 is fixed on the upper oil pan 5. The tee 6 can be an existing tee module. The oil outlet pipe 41 of the oil pump 4 is communicated with the oil inlet end 61 of the tee 6. The first oil outlet end 62 of the tee 6 is connected to the upper oil pan 5. The second oil outlet end 63 of the tee 6 is connected to an oil distribution pipe 64. The oil outlet end of the oil distribution pipe 64 is arranged close to the cooperative shaft 3. The casing 1 is used to provide protection and installation foundation for the internal mechanism of the stitching machine. The transmission main shaft 2 rotates to drive the various components to move. The cooperative shaft 3 is an existing structure, which is arranged in the horizontal connection part 14 of the casing 1 as a transfer support structure for the main shaft power to control the hook tooth movement. The oil pump 4 is an existing device, which is used to extract the lubricating oil at the bottom of the casing 1 and spray it from the top to achieve circulation. The upper oil pan 5 is used to contain the lubricating oil output from the oil pump 4, so that the lubricating oil flows from the existing oil hole at the bottom of the upper oil pan 5 to the transmission main shaft 2 and other mechanisms below to provide lubrication. The first oil outlet end 62 of the tee 6 is arranged upward, and the top of the casing 1 has an observation hole 11. The tee 6 is located at the edge of the upper oil pan 5 close to the cooperative shaft 3, and is arranged directly below the observation hole 11. The top of the second oil outlet end 63 of the tee 6 is higher than the edge of the upper oil pan 5.

[0034] like Figure 1-4As shown, a horizontally arranged middle oil pan 7 is fixedly connected in the casing 1, and the middle oil pan 7 is located just above the cooperative shaft 3. The middle oil pan 7 has a plurality of vertically penetrating oil leakage holes 71, and the oil outlet end of the oil distribution pipe 64 is fixed in the middle oil pan 7. Preferably, the cover plate 142 is arranged obliquely and the bottom surface abuts against the edge of the middle oil pan 7 away from the transmission main shaft 2, and the oil outlet end of the oil distribution pipe 64 is arranged toward the edge of the middle oil pan 7 on this side.

[0035] like Figure 2 , Figure 4 , Figure 5 As shown, the outer periphery of the cooperative shaft 3 is provided with a swing arm 8 which can control the hooking action of the stitching machine by swinging around the cooperative shaft 3. The outer periphery of the transmission main shaft 2 is provided with an eccentric wheel 21. A transmission connecting rod 9 is provided between the transmission main shaft 2 and the swing arm 8. One end of the transmission connecting rod 9 is hinged to the eccentric wheel 21, and the other end of the transmission connecting rod 9 is tilted downward and hinged to the swing arm 8.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A lubrication system for a stitching machine, the stitching machine comprising a housing (1), wherein the housing (1) is provided with a parallel transmission main shaft (2) and a co-drive shaft (3), the lubrication system comprising an oil pump (4) arranged in the housing (1) and an upper oil pan (5) capable of leaking oil downwards, wherein the upper oil pan (5) is located directly above the transmission main shaft (2), and characterized in that: A tee (6) is fixedly provided on the upper oil pan (5); the oil outlet pipe (41) of the oil pump (4) is connected to the oil inlet end (61) of the tee (6); the first oil outlet end (62) of the tee (6) leads to the upper oil pan (5); the second oil outlet end (63) of the tee (6) is connected to an oil distribution pipe (64); the oil outlet end of the oil distribution pipe (64) is arranged close to the cooperative shaft (3).

2. The lubrication system of the stitching machine according to claim 1, characterized in that: A horizontally arranged middle oil pan (7) is fixedly connected to the casing (1). The middle oil pan (7) is located directly above the cooperative shaft (3). The middle oil pan (7) has a plurality of vertically penetrating oil leakage holes (71). The oil outlet end of the oil distribution pipe (64) leads to the middle oil pan (7).

3. The lubrication system of the stitching machine according to claim 1 or 2, characterized in that: The first oil outlet end (62) of the three-way piece (6) is arranged upwards, the top of the housing (1) is provided with an observation hole (11), and the three-way piece (6) is located directly below the observation hole (11).

4. The lubrication system of the stitching machine according to claim 1 or 2, characterized in that: The top of the second oil outlet end (63) of the three-way piece (6) is higher than the edge of the upper oil tray (5).

5. The lubrication system of the stitching machine according to claim 1 or 2, characterized in that: The three-way piece (6) is located at the edge of the upper oil pan (5) close to the cooperative shaft (3).

6. The lubrication system of the stitching machine according to claim 2, characterized in that: The oil outlet end of the oil distribution pipe (64) is fixed in the middle oil pan (7).

7. The lubrication system of the stitching machine according to claim 2, characterized in that: The casing (1) comprises a main casing (12), a lower casing (13) and a transverse connecting portion (14); the transverse connecting portion (14) is arranged to be inclined upward and connected between the main casing (12) (1) and the lower casing (13); the transmission main shaft (2) and the upper oil pan (5) are located in the main casing (12); the cooperative shaft (3) is connected in the transverse connecting portion (14); the top of the transverse connecting portion (14) is provided with an inspection opening (141); the cooperative shaft (3) is located directly below the inspection opening (141); and a cover plate (142) is fixedly connected to the transverse connecting portion (14) for closing the inspection opening (141).

8. The lubrication system for a stitching machine according to claim 7, characterized in that: The cover plate (142) is arranged at an angle and its bottom surface abuts against the edge of the middle oil pan (7) on the side away from the transmission main shaft (2), and the oil outlet end of the oil distribution pipe (64) is arranged toward the edge of the middle oil pan (7).

9. The lubrication system of a stitching machine according to claim 1 or 2, characterized in that: The outer periphery of the cooperative shaft (3) is provided with a swing arm (8) which can swing around the cooperative shaft (3) to control the hooking action of the stitching machine. The outer periphery of the transmission main shaft (2) is provided with an eccentric wheel (21). A transmission connecting rod (9) is provided between the transmission main shaft (2) and the swing arm (8). One end of the transmission connecting rod (9) is hinged to the eccentric wheel (21), and the other end of the transmission connecting rod (9) is arranged to be tilted downward and hinged to the swing arm (8).

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