Groover slot pin core movement mechanism

Abstract

The utility model discloses a kind of slotting machine's slot needle needle core movement mechanism, including slot needle movement mechanism, needle core movement mechanism and transmission main shaft, transmission main shaft is crankshaft, first connecting rod mechanism includes first connecting rod, first connecting rod rear end is sleeved on transmission main shaft, first connecting rod front end is rotatably connected with first output shaft rear end, at least one first metal sleeve is equipped in first support body inner hole, first ball sleeve is equipped in the inner hole of first metal sleeve, first ball sleeve is rolling fit with first metal sleeve, first output shaft;Second connecting rod mechanism includes second connecting rod, second connecting rod rear end is sleeved on transmission main shaft, at least one second metal sleeve is equipped in second support body inner hole, second ball sleeve is equipped in the inner hole of second metal sleeve, second ball sleeve is rolling fit with second metal sleeve, second output shaft;The utility model avoids that first and second support body temperature is too high and leads to equipment failure, simple structure, manufacturing and maintenance cost are low, production efficiency is high.

Description

Technical Field

[0001] This utility model relates to a sewing machine, and more particularly to a grooved needle core movement mechanism for a sewing machine, belonging to the field of textile equipment technology. Background Technology

[0002] In warp knitting production, the sewing machine is a key piece of equipment for post-knitting finishing. Among them, the grooved needle core motion mechanism is an important knitting mechanism of the sewing machine. The existing grooved needle core motion mechanism of the sewing machine includes a grooved needle motion mechanism, a needle core motion mechanism, and a transmission main shaft rotatably mounted in the oil tank. The grooved needle motion mechanism includes a grooved needle multi-link mechanism, a first output shaft, a first support body, a grooved needle bed, and grooved needles mounted on the grooved needle bed. The needle core motion mechanism includes a needle core multi-link mechanism, a second output shaft, a second support body, a needle core bed, and needle cores mounted on the needle core bed. The grooved needle multi-link mechanism and the needle core multi-link mechanism are driven by the transmission main shaft. The first and second support bodies are respectively fixedly mounted on the oil tank. A copper sleeve is installed in the inner cavity of the first and second support bodies, and a felt is installed at the front end of the first and second support bodies.

[0003] The existing slotted needle core motion mechanism has the following five disadvantages in actual production and use: (1) During the reciprocating motion of the first output shaft and the second output shaft, they slide and rub against the copper sleeves in the inner cavity of the first support body and the second support body, respectively. Although some oil grooves are opened on the copper sleeves, the oil cannot lubricate the first output shaft and the second output shaft in a timely and effective manner during the high-speed reciprocating motion of the first output shaft and the second output shaft. The first support body and the second support body will heat up rapidly, and due to the excessive heat, the copper sleeve will seize with the first output shaft and the second output shaft. Finally, the copper sleeve will be pulled away from the first support body. (1) The second support body causes equipment failure; (2) When the first output shaft and the second output shaft reciprocate at high speed, the copper sleeve is easily worn, which increases maintenance costs; (3) Since only one felt is installed at the front end of the first and second support bodies, the first and second support bodies leak oil seriously; (4) Since the groove needle motion mechanism adopts a groove needle multi-link mechanism composed of multiple connecting rods and the needle core motion mechanism adopts a needle core multi-link mechanism composed of multiple connecting rods, the structure of the motion mechanism is complex and the manufacturing cost is high; (5) The equipment speed can only be increased to about 1200 rpm and cannot be increased further, resulting in low production efficiency. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a grooved needle core movement mechanism for a sewing machine that can avoid equipment failure caused by excessive heating of the first and second support bodies, and has a simple structure, low manufacturing and maintenance costs, and high production efficiency.

[0005] To solve the above-mentioned technical problems, this utility model adopts a grooved needle core motion mechanism for a sewing machine, including a grooved needle motion mechanism, a core motion mechanism, and a transmission main shaft rotatably installed in an oil tank. The grooved needle motion mechanism includes a first linkage mechanism, a first output shaft, a first support body, a grooved needle bed, and grooved needles installed on the grooved needle bed; the core motion mechanism includes a second linkage mechanism, a second output shaft, a second support body, a core bed, and cores installed on the core bed. The transmission main shaft is a crankshaft. The first connecting rod mechanism includes a first connecting rod. The rear end of the first connecting rod is fitted onto the transmission main shaft. The front end of the first connecting rod is rotatably connected to the rear end of the first output shaft. The first support body is cylindrical and fixedly connected to the oil tank. At least one first metal sleeve is provided in the inner hole of the first support body. The first metal sleeve is tightly fitted with the first support body. A first ball sleeve is provided in the inner hole of the first metal sleeve. The front end of the first output shaft passes through the first ball sleeve and is fixedly connected to the slotted needle bed. The first ball sleeve rolls with the first metal sleeve and the first output shaft. The second linkage mechanism includes a second linkage, the rear end of which is fitted onto the transmission main shaft, the front end of which is rotatably connected to the rear end of the second output shaft, the second support body is cylindrical and fixedly connected to the oil tank, at least one second metal sleeve is provided in the inner hole of the second support body, the second metal sleeve is tightly fitted to the second support body, a second ball sleeve is provided in the inner hole of the second metal sleeve, the front end of the second output shaft passes through the second ball sleeve and is fixedly connected to the needle core bed, and the second ball sleeve is in rolling engagement with the second metal sleeve and the second output shaft.

[0006] In a preferred embodiment of this utility model, both the first metal sleeve and the second metal sleeve are steel sleeves. A first retaining spring is provided at both ends of the first metal sleeve, and a second retaining spring is provided at both ends of the second metal sleeve. The travel of the first ball bearing in the first metal sleeve is greater than or equal to half the travel of the first output shaft, and the travel of the second ball bearing in the second metal sleeve is greater than or equal to half the travel of the second output shaft.

[0007] In a preferred embodiment of this utility model, a first oil supply hole is provided radially along the first support body and / or a second oil supply hole is provided axially along the first support body, the first oil supply hole and the second oil supply hole being connected to the inner hole of the first support body; a third oil supply hole is provided radially along the second support body and / or a fourth oil supply hole is provided axially along the second support body, the third oil supply hole and the fourth oil supply hole being connected to the inner hole of the second support body.

[0008] In a preferred embodiment of the present invention, two parallel first rotary oil seals are provided in the inner hole at the front end of the first support body, and two parallel second rotary oil seals are provided in the inner hole at the front end of the second support body.

[0009] By adopting the above structure, this utility model has the following beneficial effects: Because the first and second output shafts of this invention roll and rub against the first and second ball sleeves in the inner holes of the first and second support bodies respectively during the reciprocating motion, even during high-speed reciprocating motion, the first and second support bodies will not overheat, effectively preventing equipment failure. Moreover, this invention can increase the equipment speed to 1800 rpm and above, significantly improving production efficiency.

[0010] The first linkage mechanism of the grooved needle motion mechanism of this utility model uses only one linkage, namely the first linkage, and the second linkage mechanism of the needle core motion mechanism uses only one linkage, namely the second linkage. The transmission main shaft is a crankshaft, which simplifies the structure of the entire motion mechanism and greatly reduces manufacturing and maintenance costs.

[0011] This utility model provides a first oil supply hole in the radial direction of the first support body and / or a second oil supply hole in the axial direction of the first support body, and a third oil supply hole in the radial direction of the second support body and / or a fourth oil supply hole in the axial direction of the second support body. Since there is a gap between the retainer of the first ball sleeve and the second ball sleeve and the first output shaft and the second output shaft, cooling oil can freely enter and exit, further reducing the temperature of the first support body and the second support body.

[0012] The first ball bearing in this invention has a travel distance greater than or equal to half the travel distance of the first output shaft, and the second ball bearing has a travel distance greater than or equal to half the travel distance of the second output shaft, which makes the first and second output shafts work more reliably and stably when they are in high-speed reciprocating motion.

[0013] This invention provides two parallel first rotary oil seals in the inner hole at the front end of the first support body and two parallel second rotary oil seals in the inner hole at the front end of the second support body. By using two rotary oil seals simultaneously in the inner hole at the front end, the risk of oil leakage is significantly reduced. Attached Figure Description

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the grooved needle core movement mechanism of the sewing machine of this utility model.

[0016] Figure 2This is a schematic diagram of the groove needle motion mechanism of this utility model.

[0017] Figure 3 This is a schematic diagram of a needle core motion mechanism in this utility model.

[0018] Figure 4 This is a schematic diagram of an installation structure for the first support body, the first metal sleeve, the first ball sleeve, and the first output shaft in this utility model.

[0019] Figure 5 This is a schematic diagram of an installation structure for the second support body, the second metal sleeve, the second ball sleeve, and the second output shaft in this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the first ball sleeve and the second ball sleeve in this utility model. Detailed Implementation

[0021] See Figures 1 to 6 The diagram illustrates a grooved needle core motion mechanism for a sewing machine, comprising a grooved needle motion mechanism 1, a core motion mechanism 2, and a transmission main shaft 4 rotatably mounted within the sewing machine's oil tank 3. The transmission main shaft 4 is driven to rotate by a motor. The grooved needle motion mechanism 1 includes a first linkage mechanism, a first output shaft 1-2, a first support body 1-3, a grooved needle bed 1-4, and grooved needles 1-5 fixedly mounted on the grooved needle bed 1-4. The core motion mechanism 2 includes a second linkage mechanism, a second output shaft 2-2, a second support body 2-3, a core bed 2-4, and cores 2-5 fixedly mounted on the core bed 2-4. The transmission main shaft 4 is a crankshaft. The first connecting rod mechanism includes a first connecting rod 1-1. The rear end 1a of the first connecting rod 1-1 is preferably mounted on the transmission main shaft 4 through a bearing bush, and the two form a rotatable connection. The front end 1b of the first connecting rod 1-1 is preferably rotatably connected to the rear end 1c of the first output shaft 1-2 through a conventional C-type chuck and a short shaft. The first support body 1-3 is cylindrical and is fixedly connected to the oil tank 3 by bolts. At least one first metal sleeve 5 is provided in the inner hole of the first support body 1-3. The first metal sleeve 5 is tightly fitted with the first support body 1-3, preferably with an interference fit. A first ball sleeve 6 is provided in the inner hole of the first metal sleeve 5. The front end 1d of the first output shaft 1-2 passes through the first ball sleeve 6 and is preferably fixedly connected to the slotted needle bed 1-4 through a connecting plate and bolts. The first ball sleeve 6 is in rolling fit with the first metal sleeve 5 and the first output shaft 1-2. The first metal sleeve 5 of this utility model is preferably two and is spaced apart in the inner hole of the first support body 1-3. The second linkage mechanism includes a second linkage 2-1. The rear end 2a of the second linkage 2-1 is preferably mounted on the transmission main shaft 4 via a bearing bush. The front end 2b of the second linkage 2-1 is preferably rotatably connected to the rear end 2c of the second output shaft 2-2 via a conventional C-type chuck and a short shaft. The second support body 2-3 is cylindrical and is fixedly connected to the oil tank 3 by bolts. At least one second metal sleeve 7 is provided in the inner hole of the second support body 2-3. The second metal sleeve 7 is tightly fitted with the second support body 2-3, preferably with an interference fit. A second ball sleeve 8 is provided in the inner hole of the second metal sleeve 7. The front end 2d of the second output shaft 2-2 passes through the second ball sleeve 8 and is preferably fixedly connected to the needle core bed 2-4 via a connecting plate and bolts. The second ball sleeve 8 is in rolling fit with the second metal sleeve 7 and the second output shaft 2-2. Preferably, there are two second metal sleeves 7 in this invention, which are spaced apart in the inner hole of the second support body 2-3.

[0022] In a preferred embodiment of this utility model, both the first metal sleeve 5 and the second metal sleeve 7 are steel sleeves. (See [reference]) Figure 4 , 5 A first retaining ring 9 is provided at both ends of the first metal sleeve 5, and a second retaining ring 10 is provided at both ends of the second metal sleeve 7. The first retaining ring 9 and the second retaining ring 10 are preferably earless retaining rings. The first ball sleeve 6 has a movement stroke A in the first metal sleeve 5 that is greater than or equal to half the movement stroke of the first output shaft 1-2, and the second ball sleeve 8 has a movement stroke B in the second metal sleeve 7 that is greater than or equal to half the movement stroke of the second output shaft 2-2.

[0023] As a preferred embodiment of this utility model, such as Figure 4 , 5 As shown, a first oil supply hole 11 is provided radially along the first support body 1-3 and / or a second oil supply hole 12 is provided axially along the first support body 1-3, and the first oil supply hole 11 and the second oil supply hole 12 are connected to the inner hole of the first support body 1-3; a third oil supply hole 13 is provided radially along the second support body 2-3 and / or a fourth oil supply hole 14 is provided axially along the second support body 2-3, and the third oil supply hole 13 and the fourth oil supply hole 14 are connected to the inner hole of the second support body 2-3.

[0024] As a preferred embodiment of this utility model, such as Figure 4 , 5 As shown, two parallel first rotary oil seals 15 are provided in the inner hole at the front end of the first support body 1-3, and two parallel second rotary oil seals 16 are provided in the inner hole at the front end of the second support body 2-3.

[0025] After trial use, this utility model can avoid equipment failure caused by excessive heating of the first and second supports. It also has a simple structure, low manufacturing and maintenance costs, and high production efficiency, achieving good practical results.

Claims

1. A grooved needle core motion mechanism for a sewing machine, comprising a grooved needle motion mechanism (1), a core motion mechanism (2), and a transmission main shaft (4) rotatably mounted in an oil tank (3), wherein the grooved needle motion mechanism (1) comprises a first linkage mechanism, a first output shaft (1-2), a first support body (1-3), a grooved needle bed (1-4), and grooved needles (1-5) mounted on the grooved needle bed (1-4); the core motion mechanism (2) comprises a second linkage mechanism, a second output shaft (2-2), a second support body (2-3), a core bed (2-4), and cores (2-5) mounted on the core bed (2-4); characterized in that: The transmission main shaft (4) is a crankshaft. The first connecting rod mechanism includes a first connecting rod (1-1). The rear end (1a) of the first connecting rod (1-1) is fitted on the transmission main shaft (4). The front end (1b) of the first connecting rod (1-1) is rotatably connected to the rear end (1c) of the first output shaft (1-2). The first support body (1-3) is cylindrical and fixedly connected to the oil tank (3). At least one first metal sleeve (5) is provided in the inner hole of the first support body (1-3). The first metal sleeve (5) is tightly fitted with the first support body (1-3). A first ball sleeve (6) is provided in the inner hole of the first metal sleeve (5). The front end (1d) of the first output shaft (1-2) passes through the first ball sleeve (6) and is fixedly connected to the slotted needle bed (1-4). The first ball sleeve (6) is in rolling contact with the first metal sleeve (5) and the first output shaft (1-2). The second linkage mechanism includes a second linkage (2-1), the rear end (2a) of the second linkage (2-1) is fitted on the transmission main shaft (4), the front end (2b) of the second linkage (2-1) is rotatably connected to the rear end (2c) of the second output shaft (2-2), the second support body (2-3) is cylindrical and fixedly connected to the oil tank (3), at least one second metal sleeve (7) is provided in the inner hole of the second support body (2-3), the second metal sleeve (7) is tightly fitted with the second support body (2-3), a second ball sleeve (8) is provided in the inner hole of the second metal sleeve (7), the front end (2d) of the second output shaft (2-2) passes through the second ball sleeve (8) and is fixedly connected to the needle core bed (2-4), the second ball sleeve (8) is in rolling fit with the second metal sleeve (7) and the second output shaft (2-2).

2. The grooved needle core movement mechanism of the sewing machine according to claim 1, characterized in that: Both the first metal sleeve (5) and the second metal sleeve (7) are steel sleeves. A first retaining ring (9) is provided at both ends of the first metal sleeve (5), and a second retaining ring (10) is provided at both ends of the second metal sleeve (7). The first ball sleeve (6) has a travel (A) in the first metal sleeve (5) that is greater than or equal to half the travel of the first output shaft (1-2), and the second ball sleeve (8) has a travel (B) in the second metal sleeve (7) that is greater than or equal to half the travel of the second output shaft (2-2).

3. The grooved needle core movement mechanism of the sewing machine according to claim 1 or 2, characterized in that: A first oil supply hole (11) is provided radially along the first support body (1-3) and / or a second oil supply hole (12) is provided axially along the first support body (1-3), wherein the first oil supply hole (11) and the second oil supply hole (12) are connected to the inner hole of the first support body (1-3); a third oil supply hole (13) is provided radially along the second support body (2-3) and / or a fourth oil supply hole (14) is provided axially along the second support body (2-3), wherein the third oil supply hole (13) and the fourth oil supply hole (14) are connected to the inner hole of the second support body (2-3).

4. The grooved needle core movement mechanism of the sewing machine according to claim 1 or 2, characterized in that: Two parallel first rotary oil seals (15) are provided in the inner hole at the front end of the first support body (1-3), and two parallel second rotary oil seals (16) are provided in the inner hole at the front end of the second support body (2-3).

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