CN211256210U

CN211256210U - Unwinding tension control mechanism of shaft combining machine

Info

Publication number: CN211256210U
Application number: CN201922005495.8U
Authority: CN
Inventors: 梁天舒; 郭建华
Original assignee: Suzhou Four Spinning Technology Co ltd
Current assignee: Suzhou Four Spinning Technology Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-08-14
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a warp rebeaming machine's tension control mechanism that moves back relates to tension control technical field, aims at solving current beam rebeaming machine backing-off tension control scheme and can not effectively guarantee to move back the invariable problem of tension. The technical scheme is that the magnetic powder brakes are provided with two magnetic powder brakes, each magnetic powder brake is electrically connected with a brake current regulator, and the brake current regulators are electrically connected with a PLC (programmable logic controller); each magnetic powder brake is connected with the rack through a bearing and can rotate by taking a transmission shaft of the magnetic powder brake as a shaft, a connecting rod is connected between the shells of the two magnetic powder brakes, and the connecting rod is parallel to the connecting line of the middle points of the transmission shafts of the two magnetic powder brakes; one end of the transmission power arm is arranged on the shell of one of the magnetic powder brakes, and the other end of the transmission power arm is connected with the force measuring end of the tension sensor; the transmission shaft of each magnetic powder brake is coaxially connected with a brake gear, and the brake gear is meshed with a reduction gear. The constant unwinding tension can be effectively ensured.

Description

Unwinding tension control mechanism of shaft combining machine

Technical Field

The utility model belongs to the technical field of tension control technique and specifically relates to a draw back tension control mechanism of combining machine is related to.

Background

The beam combining machine can combine the pulp (warp) beams processed by a plurality of batch warping machines, sizing machines and sizing combination machines into a beam, and the specific process is as follows: the filaments are wound on warp bobbins first and then the multiple warp bobbins are wound onto a beam by a beam combiner and thus combined into a larger beam. During unwinding of the warp bobbins, it is generally required that unwinding tensions of the warp bobbins are consistent, and the smaller deviation is better.

In the existing warp beam combining machine unwinding tension control device, each warp beam is provided with a magnetic powder brake, an output shaft end of the magnetic powder brake is connected with a rotating shaft at the shaft end of the warp beam through two-stage speed reduction transmission, and the warp beam can rotate under the pulling of silk yarns; each magnetic powder brake is connected with a brake current regulator, the brake current regulator is connected with a PLC (programmable logic controller) of the parallel shaft machine, and the PLC controls the output torque of the magnetic powder brake by adjusting exciting current through the brake current regulator, so that the purpose of controlling tension release is achieved. When the magnetic powder brake is used, the PLC changes the size of the exciting current of the magnetic powder brake according to the measured rotating speed of the rotating shaft, and the output torque of the magnetic powder brake can be adjusted, so that the unwinding tension is controlled. For example:

chinese patent No. CN202030886U discloses a drawing-off tension detecting device for a shaft combining machine, which comprises a let-off gear, a driving gear, a magnetic powder brake and a sensing arm, wherein the let-off gear and a warp shaft of the shaft combining machine rotate coaxially, the driving gear and an output shaft of the magnetic powder brake rotate coaxially, the driving gear and the let-off gear are engaged with each other, and one end of the sensing arm is arranged on the magnetic powder brake; the detection device further comprises a tension sensor, the force measuring end of the tension sensor is arranged at the other end of the sensing force arm, and the output end of the tension sensor is electrically connected to the input end of the display. When the warp beam rotates, the brake resistance generated by the magnetic powder brake controls the unwinding tension of the warp beam; the braking torque is transmitted to the force measuring end of the tension sensor through the sensing arm, the data detected by the tension sensor is transmitted to the display to be displayed, and the size of the exciting current of the magnetic powder brake is changed according to the detected data, so that the output torque of the magnetic powder brake is adjusted, and the unwinding tension of the bobbin is controlled to be constant.

However, the above prior art solutions have the following drawbacks: the output shaft of one magnetic powder brake is connected with the driving gear of the rotating shaft, and the torque of the magnetic powder brake is limited, so that the condition that the rotating speed of the motor cannot be limited and the unwinding tension of the bobbin cannot be constant easily occurs when the rotating speed of the rotating shaft is too high, and the working stability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a combining machine's tension control mechanism that separates, it has the effect that can effectively guarantee to separate the tension invariant.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a tension releasing control mechanism of a shaft combining machine comprises a rack, wherein a rotating shaft, a magnetic powder brake, a transmission force arm, a tension sensor and a shaft diameter detection device are arranged on the rack, one end of the rotating shaft is coaxially connected with a reduction gear, and the other end of the rotating shaft is in transmission connection with a warp shaft; the shaft diameter detection device is matched with the rotating shaft and is used for detecting the rotating speed of the rotating shaft, and the tension sensor and the shaft diameter detection device are both electrically connected with a PLC (programmable logic controller) of the shaft combining machine; the magnetic powder brakes are provided with two magnetic powder brakes, each magnetic powder brake is electrically connected with a brake current regulator, and the brake current regulators are electrically connected with the PLC;

each magnetic powder brake is connected with the rack through a bearing and can rotate by taking a transmission shaft of the magnetic powder brake as a shaft, a connecting rod is connected between the shells of the two magnetic powder brakes, and the connecting rod is parallel to a connecting line of the middle points of the transmission shafts of the two magnetic powder brakes; one end of the power transmission arm is arranged on the shell of one of the magnetic powder brakes, and the other end of the power transmission arm is connected with the force measuring end of the tension sensor; and the transmission shaft of each magnetic powder brake is coaxially connected with a brake gear, and the brake gears are meshed with the reduction gear.

Through adopting above-mentioned technical scheme, two magnetic powder brakes link together through the connecting rod to one of them magnetic powder brake's casing is connected through transmission power arm and tension sensor's dynamometry end, so magnetic powder brake's shell can not rotate, and the rotational speed of rotation axis is controlled to the braking resistance that produces by magnetic powder brake, thereby controls the tension of warp spool. The braking torque is transmitted to the force measuring end of the tension sensor through the sensing arm, and the detected tension is transmitted to the PLC controller, so that the PLC controller can realize continuous monitoring of the tension, and change the magnitude of exciting currents of the two magnetic powder brakes according to the detected tension so as to adjust the output torque and control the unwinding tension of the warp bobbin. Compared with the rotating speed of a rotating shaft controlled by one magnetic powder brake, the two magnetic powder brakes can provide larger braking torque, and the effect of effectively ensuring the constant unwinding tension is achieved.

The utility model discloses further set up to: the rack comprises an upright post, a mounting plate, a connecting plate and a shaft shell; the fixed end of the tension sensor is fixedly connected with one side wall of the upright post, and the mounting plate is arranged on one adjacent side wall of the upright post close to the side wall of the tension sensor; the connecting plate is positioned on one side of the upright column close to the tension sensor and on one side of the mounting plate far away from the tension sensor, and one end of the connecting plate close to the tension sensor is fixedly connected with the mounting plate;

the shaft shell is fixedly connected with the connecting plate and extends to one side of the connecting plate close to the mounting plate, and the rotating shaft is positioned in the shaft shell; one end of the rotating shaft penetrates through the shaft shell to be coaxially connected with the reduction gear, and the other end of the rotating shaft extends out of the shaft shell and is coaxially connected with a driving gear in transmission connection with the warp shaft;

the two magnetic powder brakes are sequentially arranged on the side wall, close to the rotating shaft, of the connecting plate along the direction from the upright column to the connecting plate, and a transmission shaft of each magnetic powder brake is connected with the connecting plate through the bearing and penetrates through the connecting plate to be coaxially connected with the corresponding brake gear; the mounting plate is provided with a through hole, and one end of the transmission arm, which is far away from the tension sensor, penetrates through the through hole and is fixedly connected with a shell of the magnetic powder brake close to the stand column.

Through adopting above-mentioned technical scheme, rotation axis and two magnetic powder brake all lie in same one side of connecting plate, and structural configuration is reasonable, compact, does benefit to and saves installation space.

The utility model discloses further set up to: the side wall of the upright column close to the tension sensor is provided with a U-shaped cover shell, and the tension sensor is positioned in the U-shaped cover shell.

Through adopting above-mentioned technical scheme, U type cover shell has the guard action, can prevent that foreign object from touching tension sensor and leading to the inaccurate problem of tension test.

The utility model discloses further set up to: the stand is provided with the riser on being close to the lateral wall of mounting panel, be provided with the screw hole on the riser, be provided with the waist shape hole with the screw hole intercommunication on the mounting panel, waist shape is downthehole to wear to be equipped with screw hole threaded connection's fastening bolt.

Through adopting above-mentioned technical scheme, realized dismantling and the position is adjustable of mounting panel, because the major axis in waist shape hole is along vertical direction, so can be located the height of the rotation axis on the connecting plate according to the adjustment of actual place condition to make the drive gear of rotation axis and the gear engagement on the warp spool.

The utility model discloses further set up to: the bottom of riser is provided with the diaphragm, the diaphragm offsets with the bottom of mounting panel.

Through adopting above-mentioned technical scheme, the diaphragm has played the effect of support and location to the mounting panel, and the installation of the mounting panel of being convenient for has also shared the pressure of the vertical direction that the fastening bolt received.

The utility model discloses further set up to: the bottom of stand is provided with the extension board, the extension board sets up along stand to mounting panel direction, the stand is located the middle part of extension board.

Through adopting above-mentioned technical scheme, the extension board has played the effect of support to integrated device, more does benefit to placing and installing of whole device.

The utility model discloses further set up to: the side wall of the connecting plate, which is far away from the magnetic powder brake, is provided with a containing shell, a containing cavity is arranged in the containing shell, and the brake gear and the reduction gear are both arranged in the containing cavity.

Through adopting above-mentioned technical scheme, the holding shell has the guard action, prevents that impurity such as dust from entering into and influencing both transmission or cause wearing and tearing to both on brake gear and reduction gear.

The utility model discloses further set up to: one end of the containing shell, which is far away from the connecting plate, is provided with an opening communicated with the containing cavity, and the opening of the containing shell is rotatably connected with a door body for closing the opening.

By adopting the technical scheme, the brake gear and the reduction gear are convenient to maintain, such as maintenance operations of adding lubricating oil, cleaning oil stains and impurities and the like.

To sum up, the utility model discloses a beneficial technological effect does:

1. through the arrangement of the two magnetic powder brakes, the connecting rod, the power transmission arm and the tension sensor, the effect of effectively ensuring constant unwinding tension is achieved;

2. the mounting plate is detachable through the arrangement of the transverse plate, the vertical plate, the waist-shaped hole and the threaded hole, and the position of the transmission motor in the height direction is convenient to adjust;

3. through the arrangement of the U-shaped housing and the containing shell, the tension sensor and each gear are protected, the working stability of the device is improved, and the constancy of the withdrawing tension is further ensured.

Drawings

Fig. 1 is a schematic view of an overall structure of a tension releasing control mechanism of a shaft combining machine according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an unwinding tension control mechanism of another shaft combining machine according to an embodiment of the present invention;

FIG. 3 is an exploded view of the unwinding tension control mechanism of the shaft combining machine according to the embodiment of the present invention;

fig. 4 is a cross-sectional view of a U-shaped housing according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram for showing a connection relationship between the power transmission arm and the mounting plate according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram for showing the connection relationship between the shaft diameter detection device, the tension sensor, the brake current sensor and the PLC controller according to the embodiment of the present invention.

In the figure, 1, a frame; 11. a column; 12. mounting a plate; 121. a waist-shaped hole; 122. fastening the bolt; 13. a connecting plate; 14. a shaft housing; 15. a through hole; 16. a U-shaped housing; 17. a vertical plate; 171. a threaded hole; 18. a transverse plate; 19. a support plate; 2. a rotating shaft; 21. a reduction gear; 22. a drive gear; 3. a magnetic powder brake; 31. a brake current regulator; 32. a bearing; 33. a connecting rod; 34. a brake gear; 4. a power transmission arm; 5. a tension sensor; 6. a shaft diameter detection device; 7. a PLC controller; 8. a housing shell; 81. an accommodating cavity; 82. an opening; 83. a door body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 4, for the utility model discloses a draw back tension control mechanism of combining machine, including frame 1, be provided with rotation axis 2, magnetic powder brake 3, transmission arm 4, tension sensor 5 and axle diameter detection device 6 in the frame 1, magnetic powder brake is provided with two and the specification is 5 kgf. Specifically, the frame 1 includes a column 11, a mounting plate 12, a connecting plate 13 and a shaft housing 14, a support plate 19 is disposed at a bottom end of the column 11, the support plate 19 is disposed along a direction from the column 11 to the mounting plate 12, and the column 11 is located in a middle of the support plate 19. The upper end of the tension sensor 5 is a fixed end, and the lower end thereof is a force measuring end; the fixed end of the tension sensor 5 is fixedly connected with one side wall of the upright post 11, and the force measuring end of the tension sensor 5 is connected with one end of the transmission force arm 4. The mounting plate 12 is arranged on one adjacent side wall of the upright post 11 close to the tension sensor 5, the connecting plate 13 is positioned on one side of the upright post 11 close to the tension sensor 5 and on one side of the mounting plate 12 far away from the tension sensor 5, and one end of the connecting plate 13 close to the tension sensor 5 is fixedly connected with the mounting plate 12.

Referring to fig. 1 and 2, the shaft housing 14 is fixedly connected to the connecting plate 13 and extends toward one side of the connecting plate 13 close to the mounting plate 12, the rotating shaft 2 is fixedly disposed in the shaft housing 14, and the shaft diameter detecting device 6 is disposed on an outer side wall of the shaft housing 14 and is used for detecting a rotating speed of the rotating shaft 2, in this embodiment, the shaft diameter detecting device 6 is an eddy current sensor. Two magnetic powder brake 3 set gradually on connecting plate 13 is close to the lateral wall of rotation axis 2 along stand 11 to connecting plate 13 direction, it is concrete, be provided with holding shell 8 on the lateral wall that magnetic powder brake 3 was kept away from to connecting plate 13, be provided with holding chamber 81 in the holding shell 8, rotation axis 2 passes axle shell 14 and stretches into in holding chamber 81 and coaxial coupling has reduction gear 21 near the one end of connecting plate 13, the other end of rotation axis 2 stretches out axle shell 14 and coaxial coupling has with the drive gear 22 of the gear engagement of warp shaft tip, the transmission shaft of two magnetic powder brake 3 all passes connecting plate 13 and stretches into in holding chamber 81 and coaxial coupling has brake gear 34, two brake gear 34 all mesh with drive gear 22. An opening 82 communicated with the accommodating cavity 81 is formed in one end, far away from the connecting plate 13, of the accommodating shell 8, a door body 83 used for sealing the opening 82 is rotatably connected to the opening 82 of the accommodating shell 8, and after the door body 83 is closed, the accommodating cavity 81 can be sealed, so that dust or foreign matters are prevented from entering the accommodating cavity 81 and damaging the driving gear 22 and the reduction gear 21.

Referring to fig. 3, a vertical plate 17 is fixedly arranged on the side wall of the upright column 11 close to the mounting plate 12, four threaded holes 171 arranged in a rectangular shape are formed in the vertical plate 17, four waist-shaped holes 121 communicated with the threaded holes 171 in a one-to-one correspondence are formed in the mounting plate 12, and fastening bolts 122 in threaded connection with the threaded holes 171 are arranged in the waist-shaped holes 121 in a penetrating manner. The bottom end of the vertical plate 17 is also provided with a transverse plate 18, and after the transverse plate 18 is fixed on the vertical plate 17 through a fastening bolt 122, the transverse plate 18 is abutted against the bottom end of the mounting plate 12, so that a supporting force is exerted on the mounting plate 12.

Referring to fig. 4 and 5, the transmission shafts of the two magnetic particle brakes 3 are connected to the connection plate 13 through bearings 32, that is, the two magnetic particle brakes 3 can rotate around their own transmission shafts. Through-hole 15 has been seted up along vertical direction on the mounting panel 12, and the one end that tension sensor 5 was kept away from to transmission power arm 4 passes through-hole 15 and the casing fixed connection of the magnetic powder brake 3 that is close to stand 11, and transmission power arm 4 is the level setting. A connecting rod 33 is connected between the shells of the two magnetic powder brakes 3, and the connecting rod 33 is parallel to the connecting line of the middle points of the transmission shafts of the two magnetic powder brakes 3. The side wall of the upright post 11 close to the tension sensor 5 is also fixed with a U-shaped housing 16, the tension sensor 5 is positioned in the U-shaped housing 16, the tension sensor 5 is protected, and meanwhile, the measurement accuracy of the tension sensor 5 is ensured.

Referring to fig. 6, the tension sensor 5, the shaft diameter detecting device 6 and the two brake current regulators 31 are electrically connected with the PLC controller 7 of the shaft combining machine, and when the shaft combining machine works, the PLC controller 7 changes the magnitude of the exciting currents of the two magnetic powder brakes 3 according to the tension measured by the tension sensor 5 to adjust the output torques of the two magnetic powder brakes 3, so as to control the unwinding tension to be constant.

The implementation principle of the embodiment is as follows:

the transmission shafts of the two magnetic powder brakes 3 are connected with the connecting plate 13 through the bearings 32, so that the shells of the two magnetic powder brakes 3 can rotate around the transmission shafts.

At the beginning, one of the magnetic powder brakes 3 works, the unwinding tension of the bobbin is controlled by the braking resistance generated by the magnetic powder brake 3, the braking torque of the magnetic powder brake 3 is transmitted to the force measuring end of the tension sensor 5 through the transmission force arm 4, namely the force measuring end of the tension sensor 5 is pulled down by the transmission force arm 4, and the PLC 7 changes the size of the exciting current of the magnetic powder brake 3 according to the tension measured by the tension sensor 5 so as to adjust the output torque of the magnetic powder brake and control the unwinding tension of the bobbin.

When the output torque of the magnetic powder brake 3 in the working state is adjusted to the maximum and the rotating speed of the rotating shaft 2 is required to be limited, the PLC 7 changes the size of the exciting current of the other magnetic powder brake 3 through the corresponding brake current adjuster 31, so that the other magnetic powder brake 3 also starts to work. Because two brake gears 34 are all meshed with the reduction gear 21, two magnetic powder brakes 3 can both play a braking role on the rotating shaft 2, and the constancy of the unwinding tension of the shaft combining machine is effectively ensured.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A tension releasing control mechanism of a shaft combining machine comprises a rack (1), wherein a rotating shaft (2), a magnetic powder brake (3), a power transmission arm (4), a tension sensor (5) and a shaft diameter detection device (6) are arranged on the rack (1), one end of the rotating shaft (2) is coaxially connected with a reduction gear (21), and the other end of the rotating shaft is in transmission connection with a warp shaft; the shaft diameter detection device (6) is matched with the rotating shaft (2) and is used for detecting the rotating speed of the rotating shaft (2), and the tension sensor (5) and the shaft diameter detection device (6) are electrically connected with a PLC (programmable logic controller) (7) of the shaft combining machine; the method is characterized in that: the magnetic powder brakes (3) are arranged in two numbers, each magnetic powder brake (3) is electrically connected with a brake current regulator (31), and each brake current regulator (31) is electrically connected with the PLC (7);

each magnetic powder brake (3) is connected with the rack (1) through a bearing (32) and can rotate by taking a transmission shaft of the magnetic powder brake as a shaft, a connecting rod (33) is connected between the shells of the two magnetic powder brakes (3), and the connecting rod (33) is parallel to the connecting line of the middle points of the transmission shafts of the two magnetic powder brakes (3); one end of the power transmission arm (4) is arranged on the shell of one of the magnetic powder brakes (3), and the other end of the power transmission arm is connected with the force measuring end of the tension sensor (5); the transmission shaft of each magnetic powder brake (3) is coaxially connected with a brake gear (34), and the brake gears (34) are meshed with the reduction gear (21).

2. The unwinding tension control mechanism of a shaft combining machine according to claim 1, characterized in that: the rack (1) comprises a stand column (11), a mounting plate (12), a connecting plate (13) and a shaft shell (14); the fixed end of the tension sensor (5) is fixedly connected with one side wall of the upright post (11), and the mounting plate (12) is arranged on one adjacent side wall of the upright post (11) close to the side wall of the tension sensor (5); the connecting plate (13) is positioned on one side of the upright post (11) close to the tension sensor (5) and on one side of the mounting plate (12) far away from the tension sensor (5), and one end of the connecting plate (13) close to the tension sensor (5) is fixedly connected with the mounting plate (12);

the shaft shell (14) is fixedly connected with the connecting plate (13) and extends towards one side, close to the mounting plate (12), of the connecting plate (13), and the rotating shaft (2) is located in the shaft shell (14); one end of the rotating shaft (2) penetrates through the shaft shell (14) and is coaxially connected with the reduction gear (21), and the other end of the rotating shaft (2) extends out of the shaft shell (14) and is coaxially connected with a driving gear (22) in transmission connection with the warp shaft;

the two magnetic powder brakes (3) are sequentially arranged on the side wall, close to the rotating shaft (2), of the connecting plate (13) along the direction from the upright column (11) to the connecting plate (13), and a transmission shaft of each magnetic powder brake (3) is connected with the connecting plate (13) through the bearing (32) and penetrates through the connecting plate (13) to be coaxially connected with the corresponding brake gear (34); be provided with through-hole (15) on mounting panel (12), the one end that tension sensor (5) were kept away from in transmission power arm (4) passes through-hole (15) and the casing fixed connection of magnetic powder brake (3) that is close to stand (11).

3. The unwinding tension control mechanism of a shaft combining machine according to claim 2, characterized in that: the side wall of the upright post (11) close to the tension sensor (5) is provided with a U-shaped housing (16), and the tension sensor (5) is positioned in the U-shaped housing (16).

4. The unwinding tension control mechanism of a shaft combining machine according to claim 2, characterized in that: be provided with riser (17) on the lateral wall that stand (11) are close to mounting panel (12), be provided with screw hole (171) on riser (17), be provided with waist shape hole (121) with screw hole (171) intercommunication on mounting panel (12), wear to be equipped with in waist shape hole (121) and screw hole (171) threaded connection's fastening bolt (122).

5. The unwinding tension control mechanism of a shaft combining machine according to claim 4, characterized in that: the bottom of riser (17) is provided with diaphragm (18), diaphragm (18) offset with the bottom of mounting panel (12).

6. The unwinding tension control mechanism of a shaft combining machine according to claim 2, characterized in that: the bottom end of the upright post (11) is provided with a support plate (19), the support plate (19) is arranged along the direction from the upright post (11) to the mounting plate (12), and the upright post (11) is positioned in the middle of the support plate (19).

7. The unwinding tension control mechanism of a shaft combining machine according to claim 2, characterized in that: be provided with on the lateral wall of connecting plate (13) far away from magnetic powder brake (3) and hold shell (8), be provided with holding chamber (81) in holding shell (8), brake gear (34) and reduction gear (21) all set up in holding chamber (81).

8. The unwinding tension control mechanism of a shaft combining machine according to claim 7, characterized in that: one end, far away from the connecting plate (13), of the containing shell (8) is provided with an opening (82) communicated with the containing cavity (81), and the opening (82) of the containing shell (8) is rotatably connected with a door body (83) used for sealing the opening (82).