TWI759474B - Burstenstopfvorrichtung - Google Patents

Abstract

A brush plugging device comprising at least one plugging tool, the at least one plugging tool comprising a plurality of sub-tools reciprocating on a track driven by a camshaft (80), on which the camshaft (80) is configured with a tilt Cams (82 to 100) of cam surfaces (102 to 104). The cam followers are located in pairs on a common rocker (114) which is inclined by means of inclined cam surfaces (102-104).

Description

Brush plug hole equipment

The present invention relates to a brush plugging apparatus having at least one plugging tool.

The brush plug hole device is used to insert one or more bristles or tufts of bristles into associated openings in a bristle carrier or cassette. In this case, the brush plugging device is designed to work with or without anchors. That is, with anchoring, the bristles or tufts of bristles are folded into a U shape and the anchor (a collar or a type of knife) touches the central segment of the U and the folded bristles or tufts of bristles are folded Push into the opening and cut into the opening wall to anchor the bristles or tufts in the opening.

The plugging tool used for this plugging process includes multiple subtools responsible for individual steps. These sub-tools are used for the individual steps and the movements of these steps, which can be the separation movement of the arc segments on the bristle box, the movement of the feed of the anchor, the movement of forming the collar, the so-called tuft beater (Bündelschläger ), the tool slide or the so-called tongue for inserting the anchor (to name a few), all originate from the rotational movement of one or more motor shafts. For this, cams and subsequent intermediate drives are usually provided. The concept of "intermediate drive" also includes: coupling drive, rod simulator, crank drive, cam drive, wheel drive (eg gear drive, friction wheel drive, sprocket drive or pulley drive) and roller drives, by means of these intermediate drives, rotary motion is converted into reciprocating motion. Another option for driving individual subtools is individual servomotors instead of cams.

In a cam drive, the cam is usually exposed due to the cam size. The dimensions of the cam are determined in particular by the stroke length. This open design results in relatively high noise emissions and light pollution from loose bristles and dust. Lubrication of the cam surfaces is relatively difficult because oil can fly away due to high rotational speeds. Due to the high moving masses, vibrations occur throughout the system, which must be controlled.

It is an object of the present invention to provide a brush plugging device which is characterized by a high number of revolutions, a low noise level, low maintenance and relatively small dimensions. Also, vibration should be reduced.

This object is solved by a brush plugging device having at least one plugging tool, a driver and a transmission, the plugging tool comprising: a plurality of sub-tools reciprocating on a track, the driver having a rotary motor, the transmission driving The rotary motion of the rotary motor is converted into the reciprocating motion of the at least one sub-tool, the transmission converts the rotary motion of the motor shaft into reciprocating motion, and the transmission includes a camshaft, wherein the camshaft includes two adjacent at least one drive pair of cams, wherein the two cams extend along a radial plane toward the axis of rotation of the camshaft, and the two cams have a cam surface forming the peripheral surface of the cam, wherein each cam surface extending radially outward on the one hand and obliquely to this radial plane on the other hand, wherein on each of the two cam surfaces a cam follower operates and the two cam followers are located on the rocker, The rocker shaft of the rocker is located between the radial planes of the two cams, wherein each cam follower causes the rocker shaft to rotate in the pivoting direction associated with the cam follower pivoting, and wherein the rocker shaft forms a driven shaft and is coupled with an intermediate drive that converts the driven shaft motion into the reciprocating motion.

In the brush plugging apparatus of the present invention, a special type of actuator is provided. The cam is designed like a disc or drum extending radially towards the camshaft. However, the peripheral surfaces of the discs or drums are inclined in side view. The cam followers ensure that the rocker is always positioned precisely because preferably both cam followers permanently rest on their associated cam surfaces. If the cam follower of one cam surface is further radially away from the axis of rotation of the camshaft than the other cam follower, the former is responsible for the rotational movement in one direction of rotation, and then as the cam rotates further, the abutment of the corresponding cam surface The radial distance from the part on the cam follower to the axis of rotation changes again, so that the other cam follower then moves outward, and the first cam follower with its contact surface can continue to move inward, so that the rocker The rotational movement occurs in the opposite direction. Due to this design, a compact cam can be produced which allows for a large cam follower so that large forces can be converted. Therefore, the compression springs, which are common in cam drives, are not required. The smooth running of the transmission is significantly improved compared to conventionally used transmissions. Also, the moving quality is low. The trajectory of the reciprocating motion can be formed as a linear, circular segment or any other trajectory.

Preferably, the cam follower is a roller mounted on the rocker. The rollers can have a relatively large diameter and therefore withstand large forces.

The rollers should be on the same central axis and especially have the same diameter.

The imaginary axis of rotation of the rocker shaft extends in particular in its own radial plane towards the axis of rotation of the cam, ie it does not intersect the radial plane, but lies in the radial plane. This reduces the manufacturing cost of the cam surface.

The rocker shaft, more precisely the driven shaft formed by the rocker shaft, can be coupled at two opposite ends of the rocker shaft with its own intermediate drive, so that two a follower. This provides the additional possibility of obtaining multiple motions from a compact center drive.

For example, the plugging device may be a multiple plugging device having two or more plugging tools to simultaneously plug two or more brushes, wherein each plugging tool of the two plugging tools is Set to work on its own brush to make two or more brushes at the same time. Compared to conventional brush plugging devices, the structural complexity and cost are significantly reduced. The drive motor and drive provide at least twice the brush output.

In particular, a plurality of drive pairs are provided on the camshaft, which drive pairs actuate further sub-tools with their driven shafts. Thus, by means of the camshaft, several or all of the tools and their sub-tools provided in the tapping device are driven.

In a double tap machine, all camshafts can be coupled with pairs of equally constructed subtools to machine two brushes simultaneously.

At least one camshaft is preferably accommodated in a housing, at least one end of at least one driven shaft, preferably both ends of a driven shaft or driven shafts project from the housing for subsequent The outside of the housing is coupled to the intermediate transmission.

The housing is preferably a closed housing so as to protect the transmission from dust and may have integral lubrication. This also reduces maintenance. In addition, there are fewer noise emissions.

The lubrication provided in the housing can be immersion lubrication, so that the cam surfaces run in an oil bath. Additionally, an internal or external oil pump may be provided by which the oil is directed to the cam surface, or an internal impeller may be provided which transports the oil from the oil sump to the intended location of the drive.

As examples of sub-tools, plug tongues, tool slides, tuft beaters, collar formers and/or tuft separators may be driven by their own drive pairs.

It should be emphasized that the two cams of the drive pair can also be stabilized against each other by means of an intermediate wall, wherein the intermediate wall can even transition to the two cams in one piece, so that optionally even the two cam surfaces transition to the intermediate without corners in the wall. In this case, each cam surface is defined by the running surface of the cam follower.

Figure 1 illustrates a brush plugging apparatus with a plugging tool 8 having a plurality of subtools. The plugging device comprises a drum 10 with a plurality of holders for the bristle carrier 12, a bristle magazine 14, a so-called tuft extractor 16 as a sub-tool and a tongue for plugging as a further sub-tool Section 18. Furthermore, a feeding device 19 (also a subtool), symbolically represented by an arrow, is configured for a so-called anchor 20, for example in the form of a collar or a metal sheet (also called a knife).

A bristle carrier 12 (eg a sheet with openings that will be part of the finished brush in the future) or a bristle carrier in the form of a complete brush body as illustrated in Figure 1 is inserted into the brush plugging device.

In the present example, a drum 10 is configured as a rotating holding tool, on which drum 10 accommodates a plurality of bristle carriers 12 on a carrier 26 rotatable about an axis 24, which bristle carriers 12 are fed in specific positions to the carrier 26 and removed and plugged in place.

In the plugging movement described below, the bristle carrier is displaced between the two axes by the movement of the carrier 26 so that the opening to be plugged next is always relative to the next tuft of bristles moved closer.

The bristle magazine 14 includes a lager with mechanically pretensioned bristles 28 adjacent to one another. The tuft extractor 16, which is pivotable about the vertical axis 30 and comprises a sheet-like circular arc section, moves along the magazine 14 with the bristles 28 and extracts the tufts, wherein the tuft extractor 16 extracts the tufts. The outer edge along the row of the device 16 has grooves 32 into which the tufts of bristles are pressed.

The plugging tool itself includes a movable slide 34 (forming a sub-tool) having a tip 36 that reciprocates between the tuft receiving position and the plugging position illustrated in Figure 1 . This movement is illustrated by the double arrow. The movement can be along a linear axis or a circular arc segment.

In the receptacle position, the tip 36 contacts the bristle carrier 12 or remains close to the surface of the bristle carrier 12 .

In the tuft receiving position, the tip 36 is located on the dashed-dotted line 44 . The stroke of the tip 36 generally matches the length of the bristle material. For toothbrushes this stroke is up to 20mm, for brooms it is much longer (eg 100mm).

A slit-like guide is provided in the slider 34 along which the tongue 18 reciprocates.

With the tongue 18 retracted, (see arrow on the feeding device 19 ) the anchor can be inserted into the guide groove by means of a lateral slit at the front end of the tongue 18 . In addition, the tufts are fed as is known in the art in such a way that the tufts are folded and the anchor 20 rests on the lower end of the "U" folded tufts. The tongue 18 can then push the unit of folded tufts and anchors 20 to the tip 36 and finally into the corresponding opening. The individual steps are carried out by so-called subtools.

All movements are fairly fast reciprocating movements that must be precisely coordinated with each other, sometimes exceeding 1000 cycles per minute. This coordination of the various movements may be accomplished by mechanical coupling of the various moving components, as described below.

In Figure 2 a brush plugging device with a driver is shown. This is a multi-plugging device, here a double-plugging device, in which the upper plugging tool 50 and the lower plugging tool 52 simultaneously plug the brushes. For the upper and lower plugging tools 50, 52, the respective subtools can be made identical, resulting in two sets of tools (one for the upper and lower). Components that have been illustrated and described in connection with Figure 1 retain the symbols for those components. Some components in Figure 1 (as a schematic overview) have not been shown to increase the clarity of Figure 2. For this reason, in particular, the components of the driver are shown in FIG. 2 but not shown in FIG. 1 .

The drives for all movements of the reciprocating sub-tools include a rotary motor 54 and a drive 56 driven by the rotary motor 54 , the drive 56 having a closed housing 58 .

A plurality of driven shafts 60 to 68 protrude from the housing 58 with two opposite ends of the driven shafts 60 to 68 . The upper end marked with the symbol in Figure 2 is provided for driving a plurality of sub-tools of the upper plugging tool 50, and the opposite lower ends of the driven shafts 60 to 68 are provided for driving the lower plugging tool 52 subtools. The driven shafts 60 to 68 perform a rotational movement, but not a circular rotational movement, but a rotational movement of an angle < 360°, wherein the driven shafts 60 to 68 reciprocate alternately in clockwise and counterclockwise directions, as follows Also described with reference to Figures 3 and 4.

Each driven shaft 60 to 68 drives its own intermediate gear, here in the form of a rod simulator, respectively. This will be explained with reference to the driven shaft 60 . The driven shaft 60 drives a rod simulator having a first rod 70 and a second rod 72 pivotally mounted on the first rod 70 . The rod 72 is in turn coupled directly or indirectly with the tongue 18 . Thereby, the driven shaft 60 is responsible for the reciprocating movement of the tongue 18 and a corresponding rod simulator converts the continuously varying rotational movement of the driven shaft 60 into a substantially linear or orbital reciprocating movement of the tongue 18 .

The other following sub-tools of the brush plugging device are also driven by their own driven shafts 60 to 68 .

Therefore, the driven shaft 62 is responsible for the movement of the slide 34 . A lever simulator 76 is also provided here, which converts the rotational motion of the driven shaft 64 into a reciprocating motion.

The driven shaft 64 is responsible for the so-called tuft beater 77 . A corresponding rod simulator 78 is shown in FIG. 2 . When the total stroke of the tip 36 is so short that the tufts that have been inserted into the openings in the bristle carrier 12 are still partially in the tip 36 in the retracted position, the tuft beater 77 is used to remove the overly long tufts from the The tip 36 is knocked out.

The driven shaft 66 is the driver for forming the collar of the anchor, as explained also with reference to FIG. 5 .

To move the tuft picker 16, a driven shaft 68 is provided. If the driven shaft 68 coincides exactly with the shaft 30, then no shift or rod simulator is required here.

In FIG. 3, the inside of the transmission 56 is shown. The rotary motor 54 is coupled to a camshaft 80 from which all motion of the driven shafts 60 to 68 is tapped.

For each driven shaft 60 to 68 there is provided on the camshaft 80 its own drive pair of cams 82 to 100 which extend in the associated radial plane R to the axis of rotation A of the camshaft 80 . Of course, this does not mean that the cams are only of infinitely small thickness, the cams are disc-shaped and extend outwards along the radial plane, i.e. the cams are not helical cams, but are like A flat disc oriented at right angles to axis A. The radial plane R is the plane of the cams 82 to 100 passing through the cam in the center relative to the thickness of the cam.

Each cam 82 to 100 has a peripheral surface, hereinafter referred to as cam surface 102, 104 (for clarity, only cam surfaces 102, 10 are labeled). The cam surfaces 102 , 104 extend mainly obliquely with respect to the radial plane R, but there are also portions extending parallel to the axis A on the periphery, as can be seen from the portions 106 , 108 on the cams 94 , 96 . However, these parts are only transitions between the parts of the cam surface that extend obliquely to the radial plane.

Generally, with reference to FIG. 3, the cam surfaces 102, 104 of each cam 82-100 have a left sloping portion followed by a rightward sloping portion with parallel to the left sloping portion and the rightward sloping portion therebetween. The transition of the axis A corresponds to the portions 106 , 108 .

Cam followers in the form of rollers 110 , 112 , which are mounted on opposite lateral arms of the rocker 114 , run on the cam surfaces 102 , 104 . The rocker 114 has a rocker axis with an imaginary central axis of rotation 116 located between the radial planes R of the cam-driven pair.

The rocker shaft simultaneously forms the driven shaft 60 . The remaining output shafts 62 to 68 are correspondingly the rocker shafts of the rocker 114 arranged there.

As can be seen in FIG. 3, the bearing element 118 is mounted on the rocker shaft, or in other words on the driven shafts 60 to 68, so that the fixing and support of the rollers 110 and 112 on this bearing element 118 is facilitated and become possible.

The central axes M of the rollers 110 and 112 of each pair of rollers of the corresponding rocker 114 are coincident.

As can be seen in Figure 3, the rollers 110, 112 also have the same diameter and at the same time bear against the cam surfaces 102, 104 of the respective cams 82, 84 of the rollers 110, 112.

This means that, viewed in any axial section through axis A, the cam surfaces 102, 104 lie on line G. The straight lines G are illustrated in Figure 3 for some of the portions of the cam surface. For the sake of clarity, these lines G are not shown for other parts of the corresponding cam surfaces. With this orientation of the cam surfaces 102, 104 and cam surface portions, the respective rocker 114 is allowed to have no play as the rollers 110, 112 of the rocker 114 roll over the cam surfaces.

By the rotation of the camshaft 80, the cams are rotated in the portions of the cams that are unequally spaced from the axis A. In this regard, the cams are configured and sized and eccentric for each drive pair such that the rollers 110 , 112 are in permanent contact with the respective cam surfaces 102 , 104 .

The dimensions of the cams must also be chosen so that the axis of rotation 116 of the rocker 114 does not need to be at different distances from the axis A in order to achieve the following objectives: on the one hand not being pressed outwards, and on the other hand being permanently supported by the rollers 110, 112 and the cam surfaces 102, 104 contact. In other words: the intersection of all straight lines G around the cams of the driving pair and the radial plane R' on which the axis of rotation 116 of the associated rocker 114 is located forms a circle.

By orienting the cam surfaces 102, 104 once to the left and to the right in other portions, the associated rocker 114 is tilted clockwise once and counterclockwise once. This is illustrated by the corresponding double arrows in Figure 3. This pivoting of the rocker shaft in the opposite pivoting direction ensures subsequent reciprocation of the sub-tool coupled to the rocker shaft. In this regard, each cam surface 102, 104 is solely responsible for movement in one rotational direction.

The rollers 110, 112 run only on the peripheral surface (cam surface), not on the side surfaces of the cam (as in the case of a camber drive). A camber drive also has a helical cam shape, while the cam shape in the present invention is a disk or roller shape with a sloping surrounding surface.

The ends of the rocker shaft extending from the housing 58 are the driven shafts 60 to 68 shown in FIG. 2 . The driven shafts 60 to 68 and thus the rocker shaft are simply mounted in the housing wall by means of ball bearings or plain bearings.

In the externally closed housing 58 there is oil lubrication, either by means of pumps or by vanes, scrapers or the like.

The embodiment according to FIG. 4 corresponds functionally to the embodiment according to FIG. 3 . Here, however, the two cams 82 , 84 are integrally connected to the intermediate wall 120 . The intermediate wall 120 continues the cam surfaces 102, 104 of the cams 82, 84 without corners, thereby creating the impression of only one cam. However, the intermediate wall 120 has no functional significance for the driven shaft. Thus, in other words, the cams 82, 84 are part of the "whole" cam on which the rollers 110, 112 roll.

Although only one drive pair is illustrated in Figure 4, corresponding drive pairs may also be used for the remaining driven shafts 62 to 68 or for only some of the drive pairs.

In Figures 5a) to d) a non-limiting example of how the anchor 20 (here the collar) is fed and deformed is illustrated. In Fig. 5a), the tongue portion 18 is in the forward position. The anchor 20 (here in the form of a straight wire) is then fed laterally by means of a reciprocating movement, which can also originate from a driver. Reference numeral 140 designates a bent part, and reference numeral 180 designates a deformation pin.

Then, the bending member 140 is pushed forward in the direction of the arrow (this movement can also originate or originate from the driver). Due to the shape of the front end of the curved part 140 and the corresponding complementary shape of the deformation pin 180 (see Figure 5b), the anchor 20 (here the wire) is bent into a U-shape. The tongue 18 is then moved further back until it is pulled back under the anchor 20 so that the scraper 130 (indicated by the arrow in Fig. 5c) presses the anchor 20 down into the plane of the tongue so that subsequent On the forward stroke of the tongue 18, the tongue 18 can push the anchor 20 forward of the tongue 18 and fold and entrain a tuft 150 of the tufts of bristles. The movements of all these subtools can be tapped from the drive.

The two separate plugging tools 50, 52 can be equipped with identically constructed or identical rod simulators, thereby greatly simplifying the manufacture of brush plugging devices. In addition, the device is very compact and runs smoothly.

8‧‧‧Plucking tool 10‧‧‧Roller 12‧‧‧Bristle carrier 14‧‧‧Bristle box 16‧‧‧Bristle tuft extractor 18‧‧‧Tongue 19‧‧‧Feeding device 20‧‧‧ Anchor 24‧‧‧Axle 26‧‧‧Carrier 28‧‧‧Bristle 30‧‧‧Shaft 32‧‧‧Groove 34‧‧‧Slider 36‧‧‧Tip 44‧‧‧Dotted line 50‧‧‧Top Plugging Tool 52‧‧‧Bottom Plugging Tool 54‧‧‧Rotary Motor 56‧‧‧Transmission 58‧‧‧Enclosure 60‧‧‧Driven Shaft 62‧‧‧Driven Shaft 64‧‧‧Driven Shaft 66 ‧‧‧Driver Shaft 68‧‧‧Driver Shaft 70‧‧‧First Rod 72‧‧‧Second Rod 76‧‧‧Rod Simulator 77‧‧‧Burst Taper 78‧‧‧Rod Simulator 80‧‧‧Camshaft 82‧‧‧Cam84‧‧‧Cam 90‧‧‧Cam 92‧‧‧Cam 94‧‧‧Cam 96‧‧‧Cam 98‧‧‧Cam 100‧‧‧Cam 102‧‧‧ Cam surface 104‧‧‧Cam surface 106‧‧‧Part 108‧‧‧Part 110‧‧‧Roller 112‧‧‧Roller 114‧‧‧Rocker 116‧‧‧Shaft 118‧‧‧Bearing piece 120‧‧‧Middle Wall 130‧‧‧Scraper 140‧‧‧Bending part 150‧‧‧Burst 180‧‧‧Deformation pin A‧‧‧Rotation axis G‧‧‧Linear M‧‧‧Central axis R‧‧‧Radial plane R' ‧‧‧Radial plane

Further features and advantages of the present invention are explained from the following description and the accompanying drawings to which reference is made. In the diagram:

Figure 1 shows a schematic schematic diagram of a part of a plugging device according to the invention, but without the driver;

Figure 2 illustrates a perspective side view of a variant of the brush plugging apparatus according to the present invention, with a driver and a transmission;

Figure 3 shows a schematic diagram of the interior of the actuator of Figure 2;

FIG. 4 illustrates an alternative embodiment of the transmission of FIG. 3; and

Figures 5a) to d) schematically illustrate the steps performed in a variant of the brush hole plugging device according to the invention.

Domestic storage information (please note in the order of storage institution, date and number) None

Foreign deposit information (please note in the order of deposit country, institution, date and number) None

60‧‧‧Driven shaft

80‧‧‧Camshaft

82‧‧‧Cam

84‧‧‧Cam

90‧‧‧Cam

92‧‧‧Cam

94‧‧‧Cam

96‧‧‧Cam

98‧‧‧Cam

100‧‧‧Cam

102‧‧‧Cam surface

104‧‧‧Cam surface

Section 106‧‧‧

Section 108‧‧‧

110‧‧‧Rollers

112‧‧‧Rollers

114‧‧‧Joystick

116‧‧‧Rotary shaft

118‧‧‧Bearing parts

A‧‧‧shaft

G‧‧‧straight line

M‧‧‧Central axis

R‧‧‧Radial plane

R’‧‧‧Radial plane

Claims (12)

A brush plugging device having at least one plugging tool, a driver and a transmission (56), the plugging tool comprising: a plurality of sub-tools reciprocating on a track, the driver having a rotary motor (54), the The transmission (56) converts a rotational motion of the rotary motor (54) into the reciprocating motion of the at least one subtool, and the transmission (56) includes a camshaft (80), wherein the camshaft (80) includes At least one drive pair with two adjacent cams (82 to 100) along a radial plane (R) towards the axis of rotation (A) of the camshaft (80) extending, and the two cams (82-100) have a cam surface (102, 104) forming the peripheral surface of the cam (82-100), wherein each cam surface (102, 104) is on the one hand radial extending outwardly and on the other hand at least partially inclined to the radial plane, wherein a cam follower operates on each of the two cam surfaces (102, 104), and the two of each drive pair The cam followers are located on a common rocker (114) whose rocker axis is located between the radial planes (R) of the two cams (82 to 100), where each A cam follower causes a pivot of the rocker shaft in a pivot direction associated with the cam follower, and wherein the rocker shaft forms a follower shaft (60-68) and is associated with a An intermediate drive is coupled that converts a driven motion to the reciprocating motion move. The brush plug hole apparatus of claim 1, wherein the cam followers are rollers (110, 112), and the rollers (110, 112) are mounted on the rocker (114). The brush hole plugging device of claim 2, wherein the rollers (110, 112) have the same central axis (M). The brush plug hole device according to any one of claims 1 to 3, wherein the imaginary rotation axis (116) of the rocker shaft is located on a radial plane of the rotation axis (A) of the camshaft (80) (R'). The brush plug hole apparatus of any one of claims 1 to 3, wherein the driven shaft formed by the rocker shaft has two opposite ends, each of which is associated with an own An intermediate drive is coupled. The brush plugging apparatus of claim 5, wherein the brush plugging apparatus is a multiple plugging apparatus having at least two tools for plugging at least two brushes simultaneously, wherein the two intermediate drives Each intermediate drive of the machine is configured to process a brush. The brush plug hole apparatus of any one of claims 1 to 3, wherein a plurality of driving pairs of cams (82 to 100) are located on the cam shaft (80), and the driven shaft (60) of the driving pairs is located on the cam shaft (80). To 68) other subtools are actuated. The brush hole plugging device of claim 6, wherein each The ends of the driven shafts are coupled with equally constructed intermediate drives and subtools to each form two identical tools. The brush plug hole device of any one of claims 1 to 3, wherein the at least one camshaft (80) is installed in a housing (58), and at least one of the driven shafts (60 to 68) One end protrudes from the housing (58). The brush plugging apparatus of claim 9, wherein there is a lubrication in the housing (58). The brush plug hole device of claim 9, wherein the intermediate drive is mounted outside the housing (58). The brush hole plugging device of any one of claims 1 to 3, wherein a hole plug tongue (18), a tool slide, A tuft beater, a collar former and/or a tuft separator.

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