CN213142401U

CN213142401U - Bobbin winding amount detection device

Info

Publication number: CN213142401U
Application number: CN202021729809.5U
Authority: CN
Inventors: 徐海苗
Original assignee: Zhuji Light Industry Times Robot Technology Co ltd
Current assignee: Zhuji Light Industry Times Robot Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-05-07
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a cop latch winding volume detection device can be as required to detect cop latch winding volume, and removes the component position when not needing, removes detecting element's space and occupies, prevents to interfere with other automated mechanism. The device comprises a sliding seat, a detection rod and a pushing mechanism for pushing the sliding seat to approach the shuttle peg, wherein the detection rod is connected with the sliding seat in a sliding mode, the sliding seat is provided with a proximity switch for detecting the displacement of the detection rod, and an elastic reset mechanism for enabling the tail end of the detection rod to be pressed against the shuttle peg is arranged between the detection rod and the sliding seat. The utility model discloses accessible contact detection mode, the wire winding volume of comparatively accurate detection cop latch realizes the wire-wound automated control of cop latch. The sliding shoe is advanced along the guide rail to the vicinity of the bobbin only when the amount of winding needs to be detected. And when the winding amount does not need to be detected, the position of the element is moved, the space occupation of the detection element is eliminated, and the interference with other automatic mechanisms is prevented.

Description

Bobbin winding amount detection device

Technical Field

The utility model relates to an automatic technical field of sewing machine especially relates to a detection device that is used for winding suture amount on the automated inspection cop latch.

Background

When various common sewing devices run until the bottom thread is used up, the shuttle peg needs to be replaced. Taking a computerized embroidery machine as an example, the traditional bobbin replacing method adopts manual detachment of the bobbin and replacement of the bobbin with wound thread. This operation needs to be completed in the stopped state of the embroidery machine, which limits the production efficiency. Therefore, the skilled person has been successful in developing various bobbin thread removing or winding devices to replace the bobbin case (bobbin) manually. In the bobbin replacing process, the remaining thread on the bobbin needs to be removed and a new thread needs to be wound, so that the thread winding amount of the thread on the bobbin needs to be detected, the thread removing mechanism can be stopped when the remaining thread is removed, or the thread winding mechanism can be stopped when a sufficient amount of thread is wound.

The prior art detects the amount of winding mainly through the thickness of the winding suture on the cop latch at present: one is to detect the thickness of the thread by using a contact type detecting element which is arranged to be lower against the winding groove of the bobbin, and the other is to detect the thickness of the thread in a non-contact manner by using a distance measuring sensor. But the defects in the prior art are also obvious: in the contact type scheme, the shuttle peg is small in size, and the detection element occupies too much space around the shuttle peg, so that the design and operation space of other mechanisms are limited, and the contact type shuttle peg is not suitable for being configured in equipment for configuring automation devices such as a mechanical arm and the like. And the non-contact detection mode is not easy to debug, and the precision is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the above-mentioned weak point of winding volume detection device among the automatic spooling equipment of shuttle peg among the prior art, provide a shuttle peg winding volume detection device, can be as required to detect shuttle peg winding volume, and remove the component position when not needing, remove detecting element's space and occupy, prevent to interfere with other automated mechanism.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a bobbin winding volume detection device, the device sets up in bobbin unwrapping wire or spooling equipment one side for detect the winding volume of suture on the bobbin, including sliding seat, gauge rod and the advancing mechanism that advances the sliding seat and be close to the bobbin, gauge rod sliding connection the sliding seat, the sliding seat is equipped with the proximity switch who detects the gauge rod displacement, is equipped with the elasticity canceling release mechanical system who makes the terminal roof pressure bobbin of gauge rod between gauge rod and the sliding seat.

The detection rod is connected with the sliding seat in a sliding mode, and the detection rod can slide relative to the sliding seat. One end of the detection rod is propped against the winding groove of the shuttle peg under the action of the elastic reset mechanism. The bobbin winding process increases along with the winding amount of the thread, the thickness of the thread in the winding groove of the bobbin increases, and the detection rod is pushed to be close to the proximity switch in the reverse direction. When the proximity switch is triggered by the distance between the detection rod and the proximity switch, the bobbin winding amount can be judged to reach a preset value. When the thread amount on the bobbin in the residual thread removing process is detected, the detection rod cannot be extruded due to the fact that the thread amount on the bobbin is reduced, the detection rod is pushed by the elastic reset mechanism to be far away from the proximity switch, and therefore the completion of removing the residual thread of the bobbin is judged. The pushing mechanism is used for driving the sliding seat to be close to or far away from the bobbin, so that the sliding seat is pushed to be close to the bobbin only when the winding quantity needs to be detected by matching with other mechanisms of the bobbin winding device. And when the winding amount does not need to be detected, the position of the element is moved, the space occupation of the detection element is eliminated, and the interference with other automatic mechanisms is prevented. And the advancing mechanism ensures that the sliding seat is positioned at the same position close to the shuttle peg every time, and also ensures that the relative distance between the Hall switch and the shuttle peg is the same when the thread quantity is detected every time, thereby judging the thread quantity on the shuttle peg through the position of the detection rod.

Preferably, the proximity switch comprises a hall switch and a magnet, the hall switch is arranged on the sliding seat, and the magnet is arranged on the detection rod.

The magnet moves along with the detection rod, when the magnet moves close to the Hall switch, the Hall element on the detection surface of the switch changes the state of the internal circuit of the switch due to the Hall effect, and therefore the existence of the magnet nearby is identified, and the on-off of the switch is controlled. The Hall switch can utilize the principle based on the Hall effect to sense the position of the detection rod, and the bobbin winding is stopped when the detection rod is reversely pushed to a preset position by the increase of the thickness in the winding groove of the bobbin. Compared with a physical contact inductive switch, the Hall switch has higher induction precision and longer service life due to the non-contact induction working principle of the Hall switch.

Preferably, the proximity switch is a contact switch or an optical coupling switch.

Preferably, the sliding seat is provided with a sliding groove, the detection rod is connected with the sliding groove in a sliding mode, a limiting block is arranged at one end, away from the shuttle peg, of the detection rod, and the magnet is arranged on the limiting block.

Preferably, the elastic reset mechanism comprises a reset spring, a blind hole extending parallel to the detection rod is formed in one side of the detection rod of the sliding seat, the reset spring is arranged in the blind hole, and a top block is arranged on one side, close to the blind hole, of the detection rod.

Preferably, the elastic reset mechanism further comprises a top shaft, the top shaft is connected with the blind hole in a sliding mode, one end of the top shaft is pressed against the reset spring, and the other end of the top shaft is in contact with the top block.

The elastic reset mechanism utilizes the elastic potential energy of the reset spring to enable the tail end of the detection rod to be pressed on the surface of the thread winding groove of the bobbin, the detection rod can be pushed only when the thread winding thickness is increased, and the precision of detecting the thread winding amount is guaranteed.

Preferably, one end of the detection rod, which is pressed against the shuttle peg, is provided with a rolling element.

The rolling piece can adopt a bearing which is rotationally connected with the tail end of the detection rod, so that the friction force between the tail end of the detection rod and the surface of the suture line can be reduced, and the influence of the detection rod on the rotating winding work of the bobbin core can be reduced as much as possible.

Preferably, the propelling mechanism comprises a feed screw and nut mechanism, the feed screw and nut mechanism comprises a motor, a feed screw and a nut, the feed screw is connected with the motor, the nut is in threaded connection with the feed screw, the nut is connected with the sliding seat, and the axial direction of the feed screw and the length direction of the detection rod are mutually parallel.

Preferably, the propelling mechanism further comprises a guide rail, the guide rail is arranged in parallel with the screw rod, and the sliding seat is connected with the screw rod in a sliding mode.

Preferably, the propulsion mechanism comprises an opto-coupler sensor for sensing the position of the sliding seat.

The pushing mechanism is used for driving the sliding seat to be close to or far away from the bobbin, so that the sliding seat is pushed to the position near the bobbin along the guide rail only when the winding amount needs to be detected or the residual thread needs to be removed by matching with other mechanisms of the bobbin winding device, and the bobbin is pressed by the detection rod. When the winding is not needed, the sliding seat is driven to enable the detection rod to be far away from the shuttle peg, the detection rod is placed to interfere with other mechanisms, and the difficulty of equipment design and the operation stability of the mechanism are reduced. The optical coupling sensor is used for detecting the position of the sliding seat and stopping at a fixed position after the sliding seat is pushed out, so that the relative positions of the Hall switch and the shuttle peg can be fixed, and the thread quantity on the shuttle peg can be judged through the position of the detection rod.

Therefore, the utility model discloses following beneficial effect has: (1) the accessible contact detection mode, the winding volume of comparatively accurate detection cop latch realizes the automatic control of cop latch winding. (2) The sliding seat is advanced along the guide rail to the vicinity of the bobbin only when it is necessary to detect the amount of winding or the surplus thread. And when the winding amount does not need to be detected, the position of the element is moved, the space occupation of the detection element is eliminated, and the interference with other automatic mechanisms is prevented. (3) The Hall switch is used as a proximity switch, and compared with a physical contact inductive switch, the Hall switch has higher induction precision and longer service life by utilizing the Hall effect non-contact induction working principle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the explosion structure of the present invention.

Fig. 3 is a structural diagram of an application state of the present invention.

The figure is marked with: 1. a sliding seat; 101. a return spring; 102. a chute; 103. blind holes; 104. a top shaft; 105. a cover plate; 2. a probe rod; 201. a limiting block; 202. a top block; 203. a bearing; 3. a Hall switch; 301. a Hall switch bracket; 4. a magnet; 501. a motor; 502. a screw rod; 503. a nut; 504. a guide rail; 505. an opto-coupler sensor; 6. a motor bracket; 7. a bobbin.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1 and 2, the utility model discloses a bobbin winding amount detection device, including sliding seat 1, gauge rod 2 and the advancing mechanism that advances sliding seat 1 and be close to the bobbin, 2 sliding connection of gauge rod the sliding seat 1, sliding seat 1 are equipped with the proximity switch that detects 2 displacements of gauge rod, are equipped with the elasticity canceling release mechanical system that makes 2 terminal roof pressures bobbin of gauge rod between gauge rod 2 and the sliding seat 1.

The proximity switch comprises a Hall switch 3 and a magnet 4, wherein the Hall switch 3 is arranged on the sliding seat 1, and the magnet 4 is arranged on the detection rod 2. The hall switch 3 is arranged on the sliding seat 1 through a hall switch bracket 301 and is close to one end of the detection rod 2 far away from the shuttle peg.

In actual use, the proximity switch can also adopt alternative schemes such as a contact switch or an optical coupling switch, and only the advancing and retreating positions of the detection rod can be detected.

The magnet 4 moves along with the detection rod 2, when the magnet 4 moves close to the Hall switch 3, the Hall element on the switch detection surface changes the state of the internal circuit of the switch due to the Hall effect, thereby identifying the existence of the magnet 4 nearby and further controlling the on or off of the switch. The hall switch 3 can sense the position of the detection rod 2 by using the principle based on the hall effect, and stops the bobbin winding when the detection rod 2 is pushed reversely to a preset position by the increase of the thickness in the winding groove of the bobbin. Compared with a physical contact inductive switch, the Hall switch 3 has higher induction precision and longer service life due to the non-contact induction working principle.

The sliding seat 1 is provided with a sliding chute 102, and a cover plate 105 is arranged at the sliding chute 102. The detection rod 2 passes through a space formed by the sliding groove 102 and the cover plate 105, and the detection rod 2 is connected with the sliding groove 102 in a sliding mode. The detection rod 2 is provided with a limiting block 201 at one end far away from the bobbin, and the magnet 4 is arranged on the limiting block 201.

The elastic return mechanism includes a return spring 101 and a top shaft 104. Slide 1 is equipped with the blind hole 103 that parallel detection pole 2 extends in one side of detection pole 2, reset spring 101 is located in the blind hole 103, detection pole 2 is equipped with kicking block 202 near blind hole 103 one side. The top shaft 104 is slidably connected with the blind hole 103, one end of the top shaft 104 presses against the return spring 101, and the other end of the top shaft 104 contacts with the top block 202.

The elastic reset mechanism utilizes the elastic potential energy of the reset spring 101 to enable the tail end of the detection rod 2 to be pressed on the surface of the thread winding groove of the bobbin, the detection rod 2 is pushed only when the thread winding thickness is increased, and the precision of detecting the thread winding amount is guaranteed.

And a rolling part is arranged at one end of the detection rod 2, which is pressed against the shuttle peg. The rolling part can adopt a bearing 203 which is rotationally connected with the tail end of the detection rod 2, so that the friction force between the tail end of the detection rod 2 and the surface of the thread can be reduced, and the influence of the detection rod 2 on the rotating winding work of the bobbin can be reduced as much as possible.

The propelling mechanism comprises a feed screw and nut mechanism, the feed screw and nut mechanism comprises a motor 501, a feed screw 502 and a nut 503, the feed screw 502 is connected with the motor 501, the nut 503 is in threaded connection with the feed screw 502, the nut 503 is connected with the sliding seat 1, and the axial direction of the feed screw 502 is parallel to the length direction of the detection rod 2. The propelling mechanism further comprises a guide rail 504, the guide rail 504 is arranged in parallel with the screw rod 502, and the sliding seat 1 is connected with the screw rod 502 in a sliding mode. The propulsion mechanism comprises an opto-coupler sensor 505 for sensing the position of the sliding seat 1.

The pushing mechanism is used for driving the sliding seat 1 to be close to or far away from the shuttle peg, so that the sliding seat 1 is pushed to the position close to the shuttle peg along the guide rail only when the winding quantity needs to be detected by matching with other mechanisms of the shuttle peg winding equipment, and the detecting rod 2 is enabled to be pressed against the shuttle peg. When the winding is not needed, the sliding seat 1 is driven to enable the detection rod 2 to be far away from the shuttle peg, and the detection rod is placed to interfere with other mechanisms, so that the difficulty of equipment design and the running stability of the mechanisms are reduced.

The optical coupling sensor is used for detecting the position of the sliding seat and stopping at a fixed position after the sliding seat is pushed out, so that the relative positions of the Hall switch and the shuttle peg can be fixed, and the thread quantity on the shuttle peg can be judged through the position of the detection rod.

In practical use, as shown in fig. 3, the motor 501 is mounted on the automatic winding device through a motor bracket 6 and is located above the bobbin 7. The screw rod 502, the guide rail and the detection rod 2 are all vertically arranged, so that the propelling mechanism can drive the sliding seat 1 to lift. When the bobbin needs to be removed or wound, the sliding seat 1 descends, so that one end of the detection rod 2 is abutted against the winding groove of the bobbin under the action of the elastic reset mechanism. The bobbin winding process increases along with the winding amount of the thread, the thickness of the thread in the winding groove of the bobbin increases, and the detection rod is pushed to be close to the proximity switch in the reverse direction. When the proximity switch is triggered by the distance between the detection rod and the proximity switch, the bobbin winding amount can be judged to reach a preset value. When the thread amount on the bobbin in the residual thread removing process is detected, the detection rod cannot be extruded due to the fact that the thread amount on the bobbin is reduced, the detection rod is pushed by the elastic reset mechanism to be far away from the proximity switch, and therefore the completion of removing the residual thread of the bobbin is judged.

When the distance of the detection rod 2 pushed triggers the proximity switch, the bobbin winding amount can be judged to reach the preset value. The pushing mechanism is used for driving the sliding seat 1 to be close to or far away from the bobbin, so that the sliding seat 1 is pushed to be close to the bobbin only when the winding quantity needs to be detected by matching with other mechanisms of the bobbin winding equipment. And when the winding amount does not need to be detected, the position of the element is moved, the space occupation of the detection element is eliminated, and the interference with other automatic mechanisms is prevented.

Claims

1. The bobbin winding amount detection device is arranged on one side of a bobbin thread removing or winding device and used for detecting the winding amount of a thread on the bobbin.

2. The bobbin winding amount detecting device according to claim 1, wherein the proximity switch includes a hall switch provided on the sliding seat and a magnet provided on the detecting rod.

3. The bobbin winding amount detecting device according to claim 1, wherein the proximity switch is a contact switch or an opto-coupler switch.

4. The bobbin winding amount detecting device according to claim 2, wherein the sliding seat is provided with a sliding groove, the detecting rod is slidably connected to the sliding groove, a stopper is provided at an end of the detecting rod away from the bobbin, and the magnet is provided on the stopper.

5. The bobbin winding amount detecting device according to claim 1, wherein the elastic reset mechanism includes a reset spring, the sliding seat is provided with a blind hole extending parallel to the detecting rod at one side of the detecting rod, the reset spring is provided in the blind hole, and the detecting rod is provided with a top block at a side near the blind hole.

6. The bobbin winding amount detecting device according to claim 5, wherein the elastic return mechanism further comprises a top shaft slidably coupled to the blind hole, one end of the top shaft presses the return spring, and the other end of the top shaft contacts the top block.

7. The bobbin winding amount detecting device according to claim 1, wherein a rolling member is provided at an end of the detecting rod pressed against the bobbin.

8. The bobbin winding amount detecting device according to claim 1, wherein the feed mechanism includes a feed screw and nut mechanism, the feed screw and nut mechanism includes a motor, a feed screw and a nut, the feed screw is connected to the motor, the nut is threadedly connected to the feed screw, the nut is connected to the slide base, and an axial direction of the feed screw and a length direction of the detection rod are parallel to each other.

9. The bobbin winding amount detecting device according to claim 8, wherein the advancing mechanism further comprises a guide rail disposed in parallel with the lead screw, and the sliding seat is slidably coupled to the lead screw.

10. The bobbin winding amount detecting device according to claim 8, wherein the urging mechanism includes an optical coupling sensor for sensing a position of the sliding seat.