CN106167960A - An automatic circulating oil supply system for a special sewing machine - Google Patents

Abstract

The invention belongs to the technical field of oil supply systems of special sewing machines, and particularly relates to an automatic circulating oil supply system of a special sewing machine, which comprises an arm oil supply oil way, a machine head constant oil way, a main constant pressure overflow oil way and an oil supply system.

Description

An automatic circulating oil supply system for a special sewing machine

technical field

The invention belongs to the technical field of oil supply systems for special sewing machines, in particular to an automatic circulation oil supply system for special sewing machines.

Background technique

The special sewing machine created by the present invention is an arm-type roll stitching sewing machine. The special sewing machine has disclosed its overall shape structure and part of the internal structure in Chinese patent numbers 201510697883.0 and 200820199507.4. The special sewing machine is an elbow-shaped cylindrical sewing machine. , used for lap sewing of men's clothing, women's clothing, casual clothing, denim clothing, shirts, overalls, raincoats, etc. At present, this style of arm-type seam seam special sewing machine is manually lubricated. If the operator is negligent and fails to refuel in time, it will easily lead to excessive wear or jamming of machine parts and high temperature heating. Since the manual refueling cannot effectively guarantee the continuous, uniform, stable and effective oil supply during the operation of the machine, the overall operating speed of the machine is limited and the efficiency of the machine operation is reduced. With manual refueling, the oil cannot be circulated and can only be refilled in one direction. There is a volatilization loss, and the impurities and stains generated during the wear and tear of the machine's running parts are always inside the machine and cannot be discharged, which further aggravates the machine. Wear and tear will affect the service life of the machine.

Contents of the invention

The object of the present invention is to provide an automatic circulating oil supply system for special sewing machines with stable structure, automatic circulating oil supply and good oil supply effect.

The purpose of the present invention is achieved like this:

An automatic circulating oil supply system for a special sewing machine. The oil supply system includes an arm oil supply oil circuit, a machine head oil supply oil circuit, a machine head constant oil oil circuit, a main constant pressure overflow oil circuit and an oil outlet device;

The oil outlet device includes an oil pump assembly, and the oil pump assembly is arranged in an oil pan in the sewing machine housing;

The arm oil supply circuit includes a first constant pressure overflow filter device, an arm oil supply pipeline and an arm oil return channel, the arm oil return channel is connected to the oil pan, and the arm of the sewing machine is connected to the A first constant pressure overflow oil filter device is arranged between the above oil pump components, and the machine arm, the first constant pressure overflow oil filter device and the oil pump component are connected through the machine arm oil supply pipeline;

The machine head oil supply circuit includes the second constant pressure overflow oil filter device and the machine head oil supply pipeline. At least one shaft sleeve is arranged on the main shaft of the sewing machine head. The interior of the main shaft is hollow, and the main shaft is connected to the shaft sleeve. An oil guide hole is provided at the head, the oil supply pipe of the machine head is led out from the oil pump assembly and connected with the hollow passage inside the main shaft, and a second constant pressure overflow oil filter is arranged between the main shaft and the oil pump assembly device;

The constant oil circuit of the machine head includes the oil return pipeline of the machine head, the end of the machine head is provided with the oil return pipeline of the machine head, and the oil return pipeline of the machine head is connected with the oil pan;

The main constant pressure overflow oil circuit includes a main constant pressure overflow device and a main overflow pipeline, and the oil pump assembly and the main constant pressure overflow device are connected through the main overflow pipeline.

The first constant pressure overflow oil filter device, the second constant pressure overflow oil filter device, and the main constant pressure overflow device are all provided with a relief valve, the relief valve includes a relief valve body, and the relief valve body is provided with An oil retaining steel ball is arranged at the intersection of the oil inlet and the oil outlet, the oil inlet channel and the oil outlet channel, and a compression spring is pressed on the back of the oil retaining steel ball. One end of the compression spring is pressed against the oil retaining steel ball, and the other end is pressed against on the relief valve body.

The rear part of the relief valve body is threadedly connected with a compression spring adjusting nut, and one end of the compression spring is pressed on the oil retaining steel ball, and the other end is pressed on the compression spring adjusting nut.

The oil pump assembly includes an oil pump body, the two ends of the oil pump body are provided with an oil pump oil return port and an oil pump outlet port, and an oil pump row wheel is movable in the oil pump body, and the inner cavity of the oil pump row wheel is provided with a oil pump star wheel.

The cross section of the inner chamber of the oil pump row wheel is pentagonal, the cross section of the oil pump star wheel is quadrilateral, and several cavities are formed between the oil pump star wheel and the oil pump row wheel, and the cavities include the oil supply side cavity and the return The volumes of the oil side cavity, the oil supply side cavity and the oil return side cavity are staggered and become larger or smaller during the rotation of the star wheel of the oil pump.

The first constant-pressure overflow oil filter device and the second constant-pressure overflow oil filter device are side-by-side integral structures, and both are provided with filter layers inside.

The side of the machine arm is provided with an oil volume window of the machine arm and an oil return cover of the machine arm. The inner cavity of the oil return cover of the machine arm is provided with a first step and a second step, and the second step is arranged on the first step. above and the volume of the cavity formed by the second step is greater than the volume of the cavity formed by the first step.

The bottom of the oil pan is provided with cooling fins.

The cooling fin and the oil pan are integrally structured.

The arm oil supply pipeline is provided with three arm oil outlet pipelines at the arm.

Compared with the prior art, the present invention has outstanding and beneficial technical effects as follows:

1. The oil supply system of the special machine body of the present invention includes the arm oil supply oil circuit, the machine head oil supply oil circuit, the machine head constant oil oil circuit and the main constant pressure overflow oil circuit, and the four oil circuits all pass through the oil pan The oil pump components in the system provide collective oil supply. Due to the different oil supply oil pressure and oil volume required by each part, a relief valve is installed on each oil supply oil line to ensure the stability of the overall oil supply. The main constant The pressure overflow oil circuit is mainly to ensure that the oil pressure in the main oil supply oil circuit remains within the set range when the machine is operating at high and low speeds, so as to ensure the overall oil consumption. The other three oil circuits supply oil in their respective oil supply areas and Lubrication, the oil supply inside the special machine body is effectively carried out through these four oil passages.

2. The machine head of the present invention includes a main shaft, on which at least one bushing is arranged, the interior of the main shaft is hollow, and an oil guide hole is provided at the joint between the main shaft and the bushing, and the oil supply pipeline of the machine head is led out from the oil pump assembly and Connected with the hollow channel inside the main shaft, the oil supply pipe of the machine head leads the oil into the main shaft, and conducts the oil guide and lubrication of the machine head through the main shaft, and there are several bushings on the main shaft, and the lubrication inside the bushings is always One difficulty is that through the oil guide hole between the sleeve and the main shaft, the lubrication of the sleeve is more effective, changing the traditional structure of oil guide through the external opening, and avoiding the problems of oil leakage and incomplete lubrication of the sleeve.

3. The rear part of the overflow valve body of the present invention is threadedly connected with a compression spring adjustment nut, one end of the compression spring is pressed on the oil retaining steel ball, and the other end is pressed on the compression spring adjustment nut, through proper rotation Compressing the spring adjustment nut can change the required overall oil volume, and leak-proof devices such as sealing rings have been installed inside the overflow valve. The structure is simple and stable, making the oil supply more effective.

4. The planetary wheel pump is designed in the present invention, the pump body is placed independently in the oil pan, and the oil supply adopts a soft oil pipe to prevent disconnection, which is convenient for installation and replacement, and the oil pump star wheel and the oil pump row wheel in the oil pump assembly Several cavities are formed between them, the cavities include the oil supply side cavity and the oil return side cavity, the oil supply side cavity and the oil return side cavity are constantly changing during the rotation of the oil pump star wheel, and also In the oil return, the two reach a balance, and the oil pump row wheel and the oil pump star wheel are driven by the lubricating oil flowing back into the oil pan, and they are rotated under a certain force, which reduces the energy consumption of the oil pump.

5. The side of the machine arm of the present invention is provided with an oil quantity window of the machine arm and an oil return cover of the machine arm, and the oil quantity window of the machine arm is used for the operator to observe the oil quantity and fine-tune the overflow valve to reach the effective oil supply, the inner cavity of the arm oil return cover is provided with a first stepped portion and a second stepped portion, the second stepped portion is arranged above the first stepped portion and the volume of the inner cavity formed by the second stepped portion is larger than that of the first stepped portion The volume of the inner cavity formed by a step, when the oil return volume is small, the lubricating oil returned to the oil pan slowly returns through the first step, when the flow of lubricating oil is too large, the lubricating oil will be full to the second step, The inner cavity of the second stepped part is larger than that of the first stepped part, so the oil can be returned more quickly. This structure effectively ensures the oil return quality at the machine arm.

6. The bottom of the oil pan of the present invention is provided with cooling fins, which are integrated with the oil pan to effectively control the oil temperature of circulating oil supply and ensure effective lubrication of machine parts.

7. The present invention changes the traditional manual refueling method, effectively guarantees the timely oil supply and lubrication of each moving part of the machine, and avoids excessive wear, jamming and high temperature heating of zero parts caused by untimely oil supply, so that the machine can realize The speed of operation is increased, and after the machine is lubricated during operation, the lubricating oil with impurities is filtered through the filter layer and then returned to the oil pan. After filtering, the oil is supplied, so that all lubricating parts of the machine are in clean lubricating oil. , reducing the wear and tear of the machine and ensuring the service life of the machine.

Description of drawings

Fig. 1 is one of structural representations of the present invention.

Fig. 2 is the second structural diagram of the present invention.

Fig. 3 is a cross-sectional view along line E-E of Fig. 2 .

Fig. 4 is a schematic diagram of the internal structure of the present invention.

Fig. 5 is an enlarged view of A in Fig. 4 .

Fig. 6 is a schematic structural view of the oil pump assembly of the present invention.

In the figure: 1-oil pump assembly; 2-shaft sleeve; 3-main shaft; 4-head; 5-relief valve; 6-arm;

7-oil supply side cavity; 8-oil return side cavity; 9-oil pump row wheel; 10-oil pump star wheel; 12-lubricating oil;

13-first step; 14-second step; 15-arm oil return cover; 16-arm oil window;

17-main constant pressure overflow device; 18-oil pan; 19-radiator; 20-first constant pressure overflow oil filter device;

21-the second constant pressure overflow oil filter device; 22-compression spring adjustment nut; 23-compression spring;

24-overflow valve body; 25-oil retaining steel ball; 26-filter layer; 27-oil guide hole; 30-head oil return pipe;

31-main overflow pipe; 32-arm oil supply pipe; 33-arm oil outlet pipe; 34-head oil supply pipe;

a-head oil return channel; b-branch overflow channel; c-main overflow channel;

d- oil supply channel of machine head movement mechanism; e- oil supply channel of machine arm movement mechanism; f- oil return port of oil pump;

g-oil pump outlet; h-arm oil return channel.

detailed description

Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment, see shown in Fig. 1-6:

An automatic circulating oil supply system for a special sewing machine. The oil supply system includes an arm oil supply oil circuit, a machine head oil supply oil circuit, a machine head constant oil oil circuit, a main constant pressure overflow oil circuit and an oil outlet device;

The oil outlet device includes an oil pump assembly 1, and the oil pump assembly 1 is arranged in the oil pan 18 in the sewing machine housing;

The oil supply circuit of the machine arm includes the first constant pressure overflow oil filter device 20, the oil supply pipeline 32 of the machine arm and the oil return channel h of the machine arm, and the oil return channel h of the machine arm is communicated with the oil pan 18, through The most direct and fastest way is to return the lubricating oil 12 to the oil pan 18. A first constant pressure overflow oil filter device 20 is arranged between the machine arm 6 of the sewing machine and the oil pump assembly 1, and the machine arm 6, the first constant The pressure overflow oil filter device 20 and the oil pump assembly 1 are connected through the arm oil supply pipeline 32;

The head oil supply circuit includes a second constant pressure overflow oil filter device 21, a head oil supply pipeline 34, and at least one bushing 2, preferably three bushings, is arranged on the main shaft 3 of the sewing machine head 4 2. Located at both ends and in the middle, the main shaft 3 is hollow inside, and the connection between the main shaft 3 and the sleeve 2 is provided with an oil guide hole 27, and the head oil supply pipeline 34 is led out from the oil pump assembly 1 and connected to the main shaft 3, the internal hollow channel is connected, the second constant pressure overflow oil filter device 21 is arranged between the main shaft 3 and the oil pump assembly 1, and the oil supply pipeline 34 of the machine head is led out from the oil pump assembly 1 and connected The internal hollow channels are connected, and the oil supply pipe 34 of the machine head guides the oil into the interior of the main shaft 3, and the oil guide and lubrication of the machine head 4 are carried out through the main shaft 3, and the internal lubrication of the shaft sleeve 2 on the main shaft 3 has always been a difficult point. The oil guide hole 27 between the shaft sleeve 2 and the main shaft 3 makes the lubrication of the sleeve 2 more effective, changing the traditional structure of guiding oil through an external hole, and avoiding the problems of oil leakage and incomplete lubrication of the sleeve 2;

The constant oil circuit of the machine head includes the oil return pipeline 30 of the machine head, and the oil return pipeline 30 of the machine head is arranged at the end of the machine head 4, and the oil return pipeline 30 of the machine head is connected with the oil pan 18;

The main constant pressure overflow oil circuit includes a main constant pressure overflow device 17 and a main overflow pipeline 31, and the oil pump assembly 1 and the main constant pressure overflow device 17 are connected through the main overflow pipeline 31;

The oil supply system of the special machine body includes the oil supply circuit of the arm, the oil supply circuit of the machine head, the constant oil circuit of the machine head and the main constant pressure overflow oil circuit. Collective oil supply, due to the difference in oil supply pressure and oil quantity required by each part, an overflow valve 5 is installed on each oil supply oil circuit to ensure the stability of the overall oil supply, and the main constant pressure overflow oil circuit It mainly ensures that when the machine is operating at high and low speeds, the oil pressure in the main oil supply circuit is kept within the set range to ensure the overall oil consumption. The other three are supplied with oil and lubricated in their respective oil supply areas. Effectively carry out the oil supply inside the special machine body.

The first constant pressure overflow oil filter device 20, the second constant pressure overflow oil filter device 21, and the main constant pressure overflow device 17 are all provided with a relief valve 5, and the relief valve 5 includes a relief valve body 24, The overflow valve body 24 is provided with an oil inlet and an oil outlet, and an oil retaining steel ball 25 is arranged at the intersection of the oil inlet passage and the oil outlet passage, and the rear part of the oil retaining steel ball 25 is pressed with a compression spring 23, and one end of the compression spring 23 is pressed against On the oil-retaining steel ball 25, the other end is pressed against the overflow valve body 24; the rear part of the overflow valve body 24 is threaded with a compression spring adjusting nut 22, and one end of the compression spring 23 is pressed against the oil-retaining steel ball 25, the other end is compressed on the compression spring adjustment nut 22, and the required overall oil volume can be changed by turning the compression spring adjustment nut 22 appropriately, and leak-proof devices such as sealing rings have been installed inside the overflow valve 5 , the structure is simple and stable, so that the oil supply is more effective. The compression spring adjusting nut 22 of the main constant pressure overflow device 17 is arranged inside the overflow valve body 24 due to the large load.

The oil pump assembly 1 includes an oil pump body 11, the two ends of the oil pump body 11 are provided with an oil pump oil return port f and an oil pump outlet g, and an oil pump row wheel 9 is movable inside the oil pump body 11, and the oil pump row wheel 9 has an inner cavity The oil pump star wheel 10 that is adapted to it is arranged in it; the inner cavity cross section of the described oil pump row wheel 9 is pentagonal, and the cross section of the described oil pump star wheel 10 is quadrilateral, and the oil pump star wheel 10 and the oil pump row wheel Several cavities are formed between 9, the cavities include the oil supply side cavity 7 and the oil return side cavity 8, the volumes of the oil supply side cavity 7 and the oil return side cavity 8 are interlaced during the rotation of the oil pump star wheel 10 In the process of oil return, the inner cavity of the oil return side cavity 8 becomes larger continuously, pushing the oil pump row wheel 9 makes the inner cavity of the oil supply side cavity 7 be compressed, and the oil supply side cavity 7 During the compression process, the row wheel 9 of the oil pump is driven to rotate and compresses the oil return side chamber 8. The two restrict each other to maintain the balance of oil return and oil output. In the process of oil supply, oil is also returned at the same time. The two reach a Balanced, the oil pump row wheel 9 and the oil pump star wheel 10 are driven by the lubricating oil 12 in the oil pan 18 and are subjected to a certain force to rotate, which reduces the energy consumption of the oil pump.

The first constant-pressure overflow oil filter device 20 and the second constant-pressure overflow oil filter device 21 are side-by-side integrated structures, which greatly reduce the installation space and make later maintenance more convenient. The filter layer 26 is arranged inside, and the filter layer 26 is a wool felt filter layer. After the machine is lubricated in operation, the lubricating oil 12 with impurities is filtered through the filter layer 26 and returned to the oil pan 18, so that the machine All lubricating parts are in clean lubricating oil 12, which reduces the wear and tear of the machine and ensures the service life of the machine.

The side of the machine arm 6 is provided with a machine arm oil quantity window 16 and a machine arm oil return cover 15, and the machine arm oil quantity window 16 is used for the operator to observe the oil quantity and fine-tune the overflow valve 5 to reach the position of each station. effective oil supply, the inner cavity of the arm oil return cover 15 is provided with a first stepped portion 13 and a second stepped portion 14, the second stepped portion 14 is arranged above the first stepped portion 13 and the second stepped portion 14 forms The volume of the inner cavity is greater than the volume of the inner cavity formed by the first stepped portion 13. When the oil return volume is small, the lubricating oil returned to the oil pan 18 returns slowly through the first stepped portion 13. When the flow rate of the lubricating oil 12 is too large, The lubricating oil 12 will be full to the second step portion 14, and the inner cavity of the second step portion 14 is larger than that of the first step portion 13, so the oil can be returned more quickly. This structure effectively ensures the oil return quality at the machine arm 6.

The bottom of the oil pan 18 is provided with cooling fins 19, and the cooling fins 19 and the oil pan 18 are integrally structured to effectively control the oil temperature of circulating oil supply and ensure effective lubrication of machine parts.

The machine arm oil supply pipeline 32 is provided with three machine arm oil outlet pipelines 33 at the machine arm 6. Since there are many structures at the machine arm 6 and the mechanism itself is relatively large, more lubricating oil is needed for lubrication.

The foregoing embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made according to the structures, shapes and principles of the present invention shall be covered by the protection of the present invention. within range.

Claims (10)

1. An automatic circulation oil supply system of a special sewing machine, characterized in that: the oil supply system includes an arm oil supply oil circuit, a machine head oil supply oil circuit, a machine head constant oil oil circuit, a main constant pressure overflow oil circuit and Oil outlet device; The oil outlet device includes an oil pump assembly (1), and the oil pump assembly (1) is arranged in an oil pan (18) in the sewing machine housing; The oil supply circuit of the machine arm comprises the first constant pressure overflow oil filter device (20), the oil supply pipeline (32) of the machine arm and the oil return channel (h) of the machine arm, and the oil return channel (h) of the machine arm is connected with the oil return channel (h) of the machine arm The oil pan (18) is connected, the first constant pressure overflow oil filter device (20) is arranged between the machine arm (6) of the sewing machine and the oil pump assembly (1), and the machine arm (6), the first The constant pressure overflow oil filtering device (20) and the oil pump assembly (1) are connected through the machine arm oil supply pipeline (32); The machine head oil supply circuit includes a second constant pressure overflow oil filter device (21), a machine head oil supply pipeline (34), and at least one shaft sleeve is arranged on the main shaft (3) of the sewing machine head (4) (2), the interior of the main shaft (3) is hollow, and the connection between the main shaft (3) and the bushing (2) is provided with an oil guide hole (27), and the oil supply pipeline (34) of the machine head is provided by the oil pump assembly (1) It is exported from the center and connected to the hollow channel inside the main shaft (3), and a second constant pressure overflow oil filter device (21) is arranged between the main shaft (3) and the oil pump assembly (1); The constant oil circuit of the machine head comprises the oil return pipeline (30) of the machine head, and the oil return pipeline (30) of the machine head (4) is arranged on the end of the machine head, and the oil return pipeline (30) of the machine head is connected with the oil return pipeline (30). Disk (18) is connected; The main constant pressure overflow oil circuit includes the main constant pressure overflow device (17) and the main overflow pipeline (31), and the oil pump assembly (1) and the main constant pressure overflow device (17) pass through The main overflow pipe (31) is connected. 2. The automatic circulating oil supply system for special sewing machines according to claim 1, characterized in that: the first constant pressure overflow oil filter device (20), the second constant pressure overflow oil filter device (21), The main constant pressure overflow device (17) is provided with an overflow valve (5), and the overflow valve (5) includes an overflow valve body (24), and the overflow valve body (24) is provided with an oil inlet and an oil outlet , the intersection of the oil inlet channel and the oil outlet channel is provided with an oil-retaining steel ball (25), and the rear portion of the oil-retaining steel ball (25) is compressed with a compression spring (23), and one end of the compression spring (23) is tightly pressed against the oil-retaining steel ball (25 ), the other end is tight on the overflow valve body (24). 3. The automatic circulating oil supply system of special sewing machine according to claim 2, characterized in that: the rear part of the overflow valve body (24) is threadedly connected with a compression spring adjusting nut (22), and the compression spring ( 23) One end is pressed on the oil retaining steel ball (25), and the other end is pressed on the compression spring adjusting nut (22). 4. The automatic circulating oil supply system for special sewing machines according to claim 1, characterized in that: the oil pump assembly (1) includes an oil pump body (11), and oil pump oil return ports are arranged at both ends of the oil pump body (1) (f) and the oil pump outlet (g), the oil pump body (1) is provided with an oil pump row wheel (9), and the inner cavity of the oil pump row wheel (9) is provided with a matching oil pump star wheel (10). 5. The automatic circulating oil supply system for special sewing machines according to claim 4, characterized in that: the cross section of the inner cavity of the oil pump row wheel (9) is pentagonal, and the transverse section of the oil pump star wheel (10) The cross section is quadrilateral, and several cavities are formed between the oil pump star wheel (10) and the oil pump row wheel (9). The cavities include the oil supply side cavity (7) and the oil return side cavity (8), and the oil supply side cavity (7) and the volume of the oil return side cavity (8) are staggered and become larger or smaller during the rotation of the oil pump star wheel (10). 6. The automatic circulating oil supply system for special sewing machines according to claim 1, characterized in that: the first constant pressure overflow oil filter device (20) and the second constant pressure overflow oil filter device (21) are The side-by-side integral structures are provided with filter layers (26) inside the two. 7. The automatic circulation oil supply system of special sewing machine according to claim 1, characterized in that: the side of the machine arm is provided with the machine arm oil volume window (16) and the machine arm oil return cover (15), and the machine arm The inner cavity of the arm oil return cover (15) is provided with a first stepped portion (13) and a second stepped portion (14), the second stepped portion (14) is arranged above the first stepped portion (13) and the second stepped portion The volume of the inner cavity formed by (14) is larger than the volume of the inner cavity formed by the first step part (13). 8. The automatic circulating oil supply system for special sewing machines according to claim 1, characterized in that: the bottom of the oil pan (18) is provided with cooling fins (19). 9. The automatic circulating oil supply system for special sewing machines according to claim 8, characterized in that: the heat sink (19) and the oil pan (18) are integrally structured. 10. The automatic circulation oil supply system of special sewing machine according to claim 1, characterized in that: said machine arm oil supply pipeline (32) is provided with three machine arm oil outlet pipelines (33) at the machine arm (6) .