JPH031488Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a yarn splicing inspection device that automatically inspects a yarn splicing device, and particularly to drive mechanisms for various mechanisms working for inspection.

[Prior Art] Generally, an automatic winder (winding unit) is equipped with a yarn splicing device that automatically cuts and splices the yarn during winding in order to remove defects in the yarn being rewound. However, in order to ensure the quality of the yarn spliced by this splicing device, it is necessary to thoroughly inspect the splicing performance of the splicing device.

By the way, in order to have this inspection performed automatically by a machine rather than manually by an operator, the main points are as follows.
A mechanism for giving a splicing command to the yarn splicing device to form a seam, a mechanism for collecting the sample yarn including the formed seam from the winding unit, a mechanism for transporting the sample yarn to the measurement position, and a mechanism for transporting the sample yarn to the measurement position. A mechanism is required to measure the characteristics of the sample thread attached to the thread.

[Problems to be solved by the invention] However, a certain amount of time is required to accomplish the tasks of each of the above mechanisms. Assuming that each movement takes 6 seconds, if you complete each movement one by one before starting the next movement, it will take 23 seconds to complete one cycle. In particular, it takes approximately 4 minutes to perform at least 10 seam measurements on one winding unit, and it takes approximately 4 minutes to perform seam measurements on all 60 units.
It took 240 minutes, or about 4 hours, so even if it were done automatically, the problem was foreseen that the test would take an extremely long time.

[Purpose of the invention] The purpose of the invention is to solve the above problems by overlapping the operations of each mechanism required for automatically inspecting the splicing performance of a splicing device. It is an object of the present invention to provide a drive mechanism for a yarn splice inspection device that can measure seams in a short time.

[Summary of the invention] The present invention, which meets the above objectives, has a splicing command mechanism that gives a command to start a splicing operation to a splicing device installed on the winding unit side, and a joint portion of spliced yarn. A coloring mechanism that collects a sample thread including a sample thread, a transfer mechanism that transports the sample thread to a measurement position, a setting mechanism that sets the transferred sample thread at a predetermined measurement position, and a measurement mechanism that measures the characteristics of the set sample thread. A measuring mechanism is provided, and these mechanisms are grouped into multiple groups, for example, a thread splicing command mechanism, a collection mechanism and transfer mechanism, a work-in-process mechanism, and a measuring mechanism, and each group is operated independently. The mechanisms in each group are operated partially in parallel by attaching operating shafts, and by timing the rotations of these operating shafts and relating them to each other.

This allows the yarn splicing operation for collecting the next sample yarn to be performed in parallel with the measurement operation for the sample yarn that has already been colored, and allows all mechanisms to be operated with one operating axis. This prevents the start of the next yarn splicing from being commanded after the end of a measurement, or the cycle from the end of a measurement to the end of the next measurement to become long.

[Example] An example of the present invention will be described below based on the accompanying drawings.

In this embodiment, a driving mechanism will be described in which the inspection device moves along a large number of winding units each having a yarn splicing device arranged in parallel.

In addition, the yarn splicing device installed in each winding unit is disclosed in Japanese Patent Application Laid-Open No. 59-179832, which the applicant has already disclosed.
A pneumatic yarn splicing device as shown in the publication is applied. However, by fixing the inspection device of this embodiment in a fixed position and replacing the yarn splicing device of the winding unit, it is also possible to check a large number of yarn splicing devices before shipping. , a knotter for forming knots such as a weaver knot, a fisherman's knot, or a winding unit equipped with other types of splicing devices.

Referring to FIG. 2, a schematic configuration of an apparatus showing an embodiment of the present invention will be explained. The inspection device 1 includes a yarn splicing command mechanism 2 that gives a yarn splicing command to the yarn splicing device T of the winding unit U; A sample thread coloring mechanism 5 consisting of an upper thread cutting and grasping mechanism 3 and a lower thread cutting and grasping mechanism 4 to be grasped; A sample yarn transfer mechanism 9 consisting of a side movable arm 8 and a link mechanism for moving each arm 7, 8, and an upper side that separates the sample yarn transferred to the inspection position from the transfer mechanism and sets it at a fixed position. Clamp mechanism 1
0, a mechanism 1 consisting of a lower clamp mechanism 11, etc.
2, ◯) and a measuring mechanism 6 for measuring the characteristics of the sample yarn set above.

Each of the above-mentioned mechanisms ○I to ○H is incorporated into the inspection device body V, and a movable trolley 1 is suspended via wheels from the ceiling rails 13, 13 extending along the winding unit U.
4, each mechanism is operated in a timely manner by a drive mechanism to be described later, and operations such as sampling, transporting, setting, and measuring yarn splicing sample yarns are performed in an orderly manner.

In FIG. 1, the main parts of the present invention, that is, the driving camshafts A, B, and C of each of the above mechanisms that constitute the driving mechanism.
is shown. That is, these are incorporated in the upper part of the inspection device main body V, and the axis A is connected to the yarn splicing command arm 1.
5, the axis B operates the movable arms 7, 8 of the sample yarn collection mechanism 5 and the transfer mechanism 9, and the axis C operates the mechanism 12 and the measuring mechanism 6 for moving the sample yarn to the measuring position.

The axes A, B, and C are arranged separately, and the drive of each axis is turned on and off via a constantly rotating gear and clutch mechanism. For example, the first
A gear 17 that meshes with a gear 16 driven by a motor is loosely fitted to the shaft A in the figure, and a ratchet wheel 18 is loosely fitted to the shaft A integrally with the gear 17.
Rotation of the shaft A is controlled by selectively engaging and disengaging the ratchet wheel 18 with a ratchet 20 provided on a cam plate 19 fixed to the shaft A.

The clutch mechanism 21 is as shown in FIG.
When the ratchet wheel 18, which is loosely fitted on the shaft A and constantly rotates in the direction of the arrow 22, is engaged with the ratchet 20, which is pivotally supported on the side surface of the cam plate 19 fixed to the shaft A, the shaft is rotated through the cam plate 19. A starts rotating. That is, the ratchet 20 is biased clockwise around the shaft 23 by a spring (not shown), and is waiting at a position where it engages with the hook 25 of the stop lever 24, that is, a position where it is not engaged with the ratchet wheel 18. . When the solenoid 26 connected to the stop lever 24 is energized, the rod 27
moves downward, and the stop lever moves to spring 2.
8, the stop lever 24 and the latch 20 are disengaged, and the latch rotates clockwise around the shaft 23 due to the spring force. A cam plate 19 that is engaged with the ratchet wheel 18 and pivotally supports the ratchet 20 is driven to rotate in the direction of the arrow 22. When shaft A starts rotating, turn off the solenoid and return lever 24 to its original position, and shaft A will turn 1.
When rotated, the hook 30 engages with the hook 25 on the lever side, and the shaft A stops.

Such a clutch mechanism 21 is connected to each axis A, B, C.
The timing at which the solenoids of each clutch mechanism are actuated is controlled by a control cam, which will be described later. That is, in FIG. 1, a ratchet wheel 32 integral with a gear 31 is loosely fitted onto the shaft B, and a ratchet wheel 34 integral with a gear 33 is loosely fitted onto the shaft C.

Next, each of the above mechanisms will be explained in relation to the axes A, B, and C.

Yarn Splicing Command Mechanism In FIG. 4, the yarn splicing command mechanism 2 has a cam plate 35 fixed to the shaft A, and rotation of the cam plate 35 causes the command arm 15 to pivot. Normally, the arm 15 waits at the two-dot chain line position 15a, and when the cam follower 37 reaches the troughs 36a, 36b of the cam plate 35, the arm 15 is displaced to the solid line position, and the suction member 38 at the lower end of the arm moves to the take-up unit U.
It abuts the thread control button 39 on the side.

When this yarn control button 39 is pushed into the unit, it causes the winding unit equipped with a yarn splicing device to automatically start the yarn splicing operation, and when the button 39 is kept pressed, the yarn splicing is completed. After that, the winding operation is automatically started.

In addition, after pressing the button 39 once and starting the yarn splicing operation, press the button 39 again at the two-dot chain line position 39a.
When the unit is pulled back to , the winding of the unit does not start and remains stopped after the yarn splicing operation is completed.

Therefore, when the camshaft A starts rotating in the direction of the arrow, in the unit where the button 39 is in the pressed position 39a, the rotation of the cam plate 35 causes the cam follower 37 to reach the first trough 36a. The suction member 38 is idle and the button 39 is not operated. However, when the cam follower 37 reaches the cam surface 36c via the cam surface 36a, the suction member 38 presses the button 39.
Move to the left while adsorbing, so press button 3
9 is pulled out, and the operation of the unit during winding is stopped.

Furthermore, the cam follower 37 is located at the second valley portion 36b.
When the arm 15 reaches the solid line position again,
When the button 39 is pressed, a command to start yarn splicing is issued to the unit U side, and the yarn splicing device on the unit side operates to start the yarn splicing operation.

When the cam follower 37 reaches the large-diameter portion 36b, the button 39 adsorbed by the suction member 38 is pulled out, so winding is not restarted after the yarn splicing is completed, and the sample yarn collection, transfer, and setting described later are , transition to measurement operation. It should be noted that after a predetermined number of yarn measurements are completed, the command button 39 is pressed, and after the yarn splicing is completed, the normal winding operation begins.

Mechanism for collecting and transporting sample yarn The mechanism for collecting and transporting a certain length of sample yarn, including the spliced part of the yarn spliced by the winding unit and connected between the yarn feeding bobbin and the winding package, is shown in Figure 5. It is comprised of an upper yarn collection and transfer device 40 shown in FIG. 6, and a lower yarn collection and transfer device 41 shown in FIG.

In Fig. 5, the camshaft B has an upper thread collection,
A control cam 42 of the transfer device 40 is attached, and rotation of the control cam 42 causes a segment gear 43, a first lever 45 integrated with a gear 44 meshing with the segment gear 43, and a second lever 45 connected by a link mechanism. The upper movable arm 7, which has an upper thread cutting and gripping mechanism 3 at its tip, is retracted and pivoted via a lever 46 or the like. Normally, the arm 7 is at the standby position 7b, and is lowered by the counterclockwise rotation of the segment gear 43, and the upper yarn is cut at the solid line position 7 above the yarn splicing device T, and the yarn is cut and gripped by the gripping mechanism 3. It ascends and moves from the intermediate two-dot chain line position 7a to another two-dot chain line position 7c, and the yarn gripping point at the tip of the arm transfers the yarn to the upper clamper position of the measuring device.

On the other hand, in FIG. 6, a control cam 47 of the lower yarn collection and transfer device 41 is also attached to the cam shaft B, and the rotation of this control cam 47 causes the segment gear 48 to A lower movable arm 8 having a lower yarn cutting and gripping mechanism 4 at its tip is pivoted via a lever 50 integrated with the gear 49 that meshes with the lower arm 8 and a lever 51 connected by a link mechanism. That is, the arm 8 at the solid line position where the lower yarn cutting and gripping mechanism 4 has cut and gripped the yarn is rotated by the rotation of the segment gear 48 in the counterclockwise direction, passing through the intermediate position 8a and moving to the highest position 8b. Moving.

Therefore, when the shaft B is driven by a command from the shaft A side, which will be described later, since the control cams 42 and 47 of the sample thread sampling mechanism 5 are attached to the shaft B, the shaft A is driven.
After a certain period of time from the side yarn splicing command, the collection mechanism is activated. That is, the start of lowering of the upper movable arm 7 in FIG. 5 and the lower movable arm 8 in FIG. The thread cutting and gripping mechanisms 3 and 4 provided at 8 are performed until the thread splicing is completed. Next, the upper and lower movable arms 7, 8
starts to rise, and the sample thread is transferred to the measurement position. That is, the segment gears 43 and 48 simultaneously start rotating counterclockwise from the solid line position by the cams 42 and 47, and the upper and lower movable arms 7 and 8
Start moving in parallel at approximately the same speed.

Figure 7 shows the transport route of the sample thread YT. axis 52
is the upper movable arm 7 in FIGS. 5 and 6.
The fulcrum of the lever 45 of the lower movable arm 8 and the fulcrum of the lever 50 of the lower movable arm 8 are coaxial, and the upper movable arm 7
The fulcrum of the other lever 46 is the shaft 53, and the fulcrum of the other lever 51 of the lower movable arm is the shaft 54. Therefore, the upper end gripping point P of the sample thread YT is the trajectory P
1 and the reversal locus P2, while the lower end gripping point Q of the sample thread YT moves along the locus Q1. 55a is a locus of movement of the connecting point 55 between the lever 45 and the upper movable arm 7, and 56a is a locus of movement of the connecting point 56 of the lever 50 and the lower movable arm 8.

Loading Mechanism and Measuring Mechanism for Loading the Sample Thread to the Measuring Device The sample yarn including the seam portion, which has been transferred to the measuring device by the sample yarn collecting mechanism and transfer mechanism, is transferred to the sample yarn by the loading mechanism 12 shown in FIG. Both ends of the thread are set and clamped in place.

In FIG. 8, the mechanism 12 includes an upper clamp mechanism 57 that clamps the upper end of the sample thread, and a lower clamp mechanism 58 that clamps the lower end of the sample thread.
and a drive mechanism 59 that drives both mechanisms. Both clamp mechanisms 57 and 58 are both attached to fixed pieces 60 and 61 so as to be openable and closable, and movable pieces 62 and 63 biased in the closing direction can be opened by rotating operating levers 64 and 65. It's becoming like that. The drive mechanism 59 for opening the movable pieces 62, 63 consists of a cam mechanism shown in FIG. 9 that moves the actuating rods 66, 67 up and down. The actuating rods 66 and 67 are moved by rotating them.

In the state shown in FIG. 9, the cam follower 70 is
a, the rod 66 is in the lowered position and the upper movable piece 62 is in the closed position, as in the small diameter portion 68b, but the large diameter portion 68c,
When it reaches 68d, the rod 66 rises and places the movable piece 62 in the open position. Note that the lower movable piece 63 also opens and closes in the same manner.

Therefore, when the upper movable arm 7 in FIG. 5 reaches the position 7c indicated by the two-dot chain line, the sample yarn YT connected to the gripping point of the lower movable arm is moved to the upper clamp mechanism 5 in FIG.
It is guided by the tapered surface between the fixed piece 60 and the movable piece 62 of No. 7, and is naturally positioned at a specific position. At this time, the lower movable arm 8 is at the intermediate position 8a in FIG. 6, and after the upper movable arm has stopped, it moves to the final raised position 8b with a slight delay.

After this, the clamp mechanism operating cam 6 shown in FIG.
8 and the coaxial cam 71 (FIG. 1), the upper and lower movable pieces 62 and 63 shown in FIG. 8 are closed, completing the thread clamping. Therefore, when the camshaft C starts rotating immediately before the sample thread is positioned at the measurement position, the sample thread moves between the upper and lower movable pieces 62 and the fixed piece 60.
When contact is made between 63 and 61, the movable piece 6
2 and 63 are already in an open state due to the lifting of the rods 66 and 67 shown in FIG. By operating the movable pieces 62, 63 in the closing direction, the sample thread YT is set in the measuring device. After the clamping mechanism completes clamping the sample thread, the thread cutting and gripping mechanisms 3 and 4 of the upper and lower movable arms 7 and 8 are reset and returned to their original states in preparation for the next sample thread collection operation.

By the way, the upper clamp mechanism 57 constituting the above-mentioned mechanism 12 is different from the fixed lower clamp mechanism 58.
Unlike this, it is movable in the vertical direction, and in this case, by raising the upper clamp mechanism 57, characteristics such as strength and elongation of the sample yarn can be measured.

That is, in FIG. 5, the sample thread measuring mechanism 6
This is a known measurement gauge 75 in which a cam plate 7 is fixed to a cam shaft C, and by rotation of this cam plate 73, an elevating plate 73a having an upper clamp mechanism 57 is moved via a cam lever 74. The tensile strength of the sample thread can be measured by raising the thread integrally with the thread. When the lever 74 pivots from the solid line position to the two-dot chain line position 74a, the elevating plate 73a rises and the clamped sample thread is pulled.

Therefore, when the camshaft C rotates, the lower end of the sample yarn YT, which has a seam at approximately the center of the sample yarn, is clamped by the fixed lower clamp mechanism 58, so as the lifting plate rises, the lower end of the sample yarn YT is pulled. A load is applied to the yarn YT, and a known strain gauge inside the gauge 75 is displaced in proportion to the load, and the gauge 75 is moved to the position where the joint part of the sample yarn finally breaks.
When the value increases, the maximum displacement of the strain gauge that occurred at the time of breakage is converted to a load value, and the yarn strength can be determined in grams.

Control System As explained in ~, the yarn splicing command arm 15 is driven by the axis A, the movable arms 7 and 8 of the sample yarn collection mechanism 5 and the transfer mechanism 9 are operated by the axis B, and the yarn splicing command arm 15 is driven by the axis C. The mechanism 12 for feeding the sample thread to the measuring device and the measuring mechanism 6 are driven.
Each of these axes A, B, and C is a movable trolley (Fig. 2
4) The timing control that correlates the operation of each mechanism is driven by a drive unit attached to the side, but the timing control that correlates the operation of each mechanism is performed by each camshaft A, shown in FIGS. 10 and 11.
In addition to the cams for the operating levers of each mechanism provided at B and C, this is done by a limit switch that controls the on/off timing of various mechanisms and a control cam that operates the actuator of the limit switch.

That is, the shaft A has four types of cams K1 to K1 shown in FIG.
Measurement positions LS1 to LS4 in FIG. 10, which are turned on and off by K4 and each cam, are provided. Although only the switch LS1 is shown in FIG. 10, it is located at the same position when viewed from the side, and is provided at a position corresponding to each cam. The cam K1 is a cam for controlling the electromagnet at the tip of the yarn splicing command arm 15 on the winding unit side shown in the second figure, and controls on/off of the attraction force of the electromagnet. Cam K2 turns on the solenoid for driving shaft B,
The cams that are turned off, cam K3 and cam K4, are cams that perform stop positioning control of the truck, etc.

Axis B in FIG. 11 is provided with three types of cams K5 to K7 and limit switches LS5 to LS7 in FIG. 10, which are turned on and off by the cams. Cam K5 is a cam that controls the upper thread cutting and gripping mechanism 3 in FIG.
The cam K7 is a cam that controls the lower thread cutting and gripping mechanism 4 shown in FIG. 6, and the cam K6 is a cam that turns on and off the solenoid clutches for driving the shafts A and C.

The shaft C is provided with three types of cams K8 to K10 for the measuring device shown in FIG. 12 and limit switches LS8 to LS10 shown in FIG. 10 which are turned on and off by the cams. The cam K8 is a cam that turns on the limit switch only during thread measurement, and is a cam that turns on the limit switch only during thread measurement.
The cam K9, which operates in response to the rise of the thread, is a control cam for disposing of broken thread waste after measurement.

Regarding the gluing force measurement operation by the inspection device having each of the above-mentioned mechanisms, the relationship between the drive of the camshafts A, B, and C that operate each mechanism, the operation timing of each mechanism, and the timing of the yarn splicing device is shown below. This will be explained based on FIG. 13.

In the above time chart, the yarn splicing command button (39 in Figure 2) is already in the protruding position in the winding unit, and the yarn splicing command arm 15 moves from the standby position 15a in Figure 4 to the active position 15 shown by the solid line. The case where the yarn splicing device operates in the first operation is shown. The horizontal direction shows the passage of time, with divisions shown every second.

That is, when the movable cart reaches a predetermined position, first, the shaft A is driven to rotate, and after 1.5 seconds, the yarn splicing start A1 is performed by the operation of the yarn splicing command arm 15, and the yarn splicing device of the winding unit starts T1. . Then,
During the yarn splicing operation, the shaft B is driven by the control cam provided on the shaft A, and the upper and lower movable arms 7 and 8 start lowering B1. At this time, the yarn splicing operation is still in progress, and the shaft C remains stopped. When the upper and lower movable arms 7 and 8 reach the lowest position, that is, the sample yarn collection position B2, the yarn on both sides of the yarn splicing member is clamped at a fixed position T3 on the yarn splicing device side, and the yarn is It is in a bent state. After this, the yarn cutting and gripping mechanisms 3 and 4 of the vertically movable arms 7 and 8 operate to cut and grip the yarn at step B3. End of thread splicing operation T
After B4, the upper and lower movable arms 7 and 8 start to rise, and at B4, the transfer of the sample yarn begins. During the transfer of this sample thread, the cam installed on shaft B (K6 in Fig. 11)
This drives the axis C via the axis A and the timer. A4, C1. That is, the splicing operation T5 for collecting the next sample yarn can be performed in parallel with the measuring operation for the sample yarn that has already been sampled.

B7, where the upper and lower movable arms 7, 8 reach the clamp mechanism at the measurement position, and C4, where the clamp start C2 and end C3 are controlled by the camshaft C, and measurement is started after the clamp ends. At C4-C5 during measurement,
The restart B10 of the axis B is performed by the cam on the axis A side, and sample thread sampling is performed again in parallel with the measurement operation. Therefore, after the end of the measurement C5, the next sample yarn has already been taken, and the B11 measurement operations are intermittently executed one after another. That is, in the case of the above example, 1
The first measurement takes 20 seconds, but after the second measurement, the cycle from the end of the measurement to the end of the next measurement is
The measurement time is 11 seconds, making it possible to perform measurement operations extremely efficiently. That is, in one winding unit, 10
It takes about 2 minutes to measure the joints once, and it takes about 120 minutes to measure all 60 units.
It will just take time. This is because the yarn splicing command mechanism, yarn collection, transfer mechanism, and measurement mechanism are operated by independent and divided drive shafts.For example, if one drive shaft operates all of the above mechanisms, If this is the case, the next yarn splicing start T5 will be commanded only after the end of measurement C5 in FIG. 13, so the cycle will take twice as long as the above cycle.

In the above embodiment, five mechanisms are grouped into three groups and are operated by three cam shafts A, B, and C. However, the present invention is not limited to this, and may be operated by one shaft. If this is avoided, each mechanism can be operated with two axes, four axes, or even five axes.

Further, the operation timing of each of the mechanisms described above can be changed depending on the type of yarn splicing device or the type of measuring device. That is, by changing the rotational speeds of the camshafts A, B, and C in unison, the overall cycle time can be easily changed.

[Effects of the invention] In summary, according to the invention, each mechanism necessary for automatic inspection of seams is partially operated in parallel, so compared to the case where each mechanism is operated in series, The cycle seam measurement time can be shortened, and in particular, when a large number of winding units are arranged in parallel, the total measurement time can be significantly shortened, which is an excellent effect.

[Brief explanation of drawings]

Fig. 1 is a front view showing the arrangement of cam shafts A, B, and C, which are the drive mechanisms of the device of the present invention, Fig. 2 is a schematic perspective view showing an embodiment of the device of the present invention, and Fig. 3 is a diagram of each cam. A side view showing the clutch mechanism of the shaft, Fig. 4 is a side view showing the structure and action of the yarn splicing command arm, Fig. 5 is a side view showing the structure and action of the upper movable arm, and Fig. 6 is a side view showing the structure and action of the upper movable arm. A side view showing the structure and function of the arm, FIG. 7 is a schematic explanatory diagram showing the movement locus of the upper and lower movable arms 7 and 8 during the sample yarn collection and transfer process, and FIG. 8 is a side view showing the sample yarn installed on the measuring mechanism side. Partially sectional front view showing the mechanism of the device, No. 9
The figure is a side view showing the drive mechanism of the movable piece of the above-mentioned upper and lower clamp mechanism, FIG. 10 is a side view showing the arrangement of limit switches operated by cams provided on each cam shaft, and FIG. FIG. 12 is a front view showing the arrangement of the cams provided, FIG. 12 is a front view showing the arrangement of the cams provided on the shaft C, and FIG. 13 is a basic time chart showing the yarn measuring process by the above inspection device. In the figure, 1 is an inspection device, 2 is a yarn splicing command mechanism, 5 is a sample yarn collection mechanism, 6 is a measurement mechanism, 9 is a sample yarn transfer mechanism, 12 is a sample yarn loading mechanism, T is a yarn splicing device, and U
is a take-up unit, and A, B, and C are camshafts as operating shafts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A yarn splicing command mechanism that gives a command to start a yarn splicing operation to a yarn splicing device installed on the winding unit side;
A collection mechanism that collects a sample yarn including the joint part of the spliced yarn, a transfer mechanism that transfers the sample yarn to a measurement position, a mechanism that sets the transferred sample yarn at a predetermined measurement position, A measuring mechanism is provided to measure the characteristics of the sample thread.
These mechanisms are grouped into multiple groups, each group is equipped with an independent divided operating shaft that operates them separately, and the rotations of these operating axes are related to each other so that the mechanisms in each group are partially parallel. 1. A drive mechanism for a yarn splicing inspection device, characterized in that it is operated by (2) A drive mechanism for a yarn splicing inspection device according to claim 1, wherein the relevant rotation of the operating shaft is timed by a cam mechanism.