TWI816917B - Verfahren zur herstellung von buersten und buerstenherstellungsmaschine - Google Patents

Abstract

The invention relates to a method for manufacturing brushes using a brush manufacturing machine. The brush manufacturing machine includes a guide part (26) along which a plurality of slides (12) are directed to a plurality of drilling stations (16A, 16B). ) and then moves to a filling station (18), wherein the drilling stations (16A, 16B) are operated simultaneously with the filling station (18), and wherein each drilling station (16A, 16B) per unit time The number of drilling cycles is equal to the number of filling cycles of the filling station (18) in the same unit time divided by the number of drilling stations (16A, 16B). The invention also relates to a brush making machine, which includes a guide part (26) and a plurality of slide seats (12) that can accommodate one or more brush bodies (32) and are adjustably mounted on the guide part ( 26), also includes a plurality of drilling stations (16A, 16B) and a filling station (18), wherein the guide portion (26) is along the plurality of drilling stations (16A, 16B) and the subsequent filling station. The station (18) extends and also includes a control device (48). The control device (48) includes a loop distributor module (49). This loop distributor module (49) returns the return flow of the filling station (18). The loop speed is reduced to the loop speed of each drilling station (16A, 16B), which loop speed is one-nth of the loop speed of the drilling station (16), where n is the loop speed of the drilling station (16A, 16B). 16A, 16B) in proportion to the number of such filling stations (18).

Description

Method for making brushes and brush making machine

The present invention relates to a method of manufacturing a brush and a brush manufacturing machine.

In the manufacturing process of brushes, such as toothbrushes, household brushes or brushes, it is common for the brush bodies to be transported sequentially to different processing stations, where specific processing steps are performed. For example, several holes can be drilled into the brush body in one processing station and the bristle bundles can be inserted into the holes in a subsequent processing station. In order to adjust the brush body, a sliding seat is mostly used. The sliding seat moves in a circle along a designated path, so that the brush bodies arranged on the sliding seat are transported to different processing stations in turn for processing. In a simple example, a brush making machine consists of a loading station, a drilling station, a filling station and an extraction station. Four slides can then be used, with the slides adjusted at each station during each cycle of the brush making machine. The carriages are usually mounted on a drive component, such as a common bracket or chain, which changes the position of all carriages together.

A disadvantage of these known machines is that the continued adjustment of the slide from one processing station to the next requires a certain amount of time, which negatively affects the productivity of the brush-making machine.

To solve this problem, a brush manufacturing machine is known from DE 10 2014 103 599 A1, which is characterized by a very short cycle time and therefore a very high production efficiency. This known machine will be described below with reference to Figures 1 to 3 .

The brush making machine includes a guide block 10 along which a plurality of slide seats 12 can be cyclically adjusted.

A plurality of processing stations 14, 16, 18, 20, 22, 24 are arranged around this guide block 10. As the slide 12 moves around this guide block 10, the slide moves past the processing station.

The guide block 10 is provided with a guide part 26 , and the function of the guide part 26 is to movably install the slide base 12 on the guide block 10 . This guide section 26 should ensure in particular that the carriage 12 is guided precisely and with the smallest possible tolerances.

The guide part 26 can be designed, for example, as a guide rail on which the carriage 12 is guided by means of rollers, rolling bearings or similar components.

A drive 28 is provided for adjusting the slides 12 , by means of which each slide can be moved individually and individually around the guide block 10 . The only limit to the individual movements of the carriages is that no carriage can overtake another carriage. In addition to this, each carriage can be moved independently of the other carriages in terms of stroke and travel speed.

The drive means 28 can for example consist of a drive motor on each carriage 12 which is coupled to a drive component such as a drive wheel or gear, which in turn cooperates with a corresponding counterpart of the central guide block 10 which counterpart For example, rails or racks. The drive 28 can also be designed as a linear motor, which is assigned to the slide and adjusts the slide in a contactless manner relative to the guide block 10 . The drive device 28 can also be composed of a plurality of belt transmission mechanisms, by means of which the slide seats can be adjusted individually. Here, by rationally distributing the belt drives to the processing stations, the number of belt drives can be reduced compared to existing slides, since only a few processing stations (for example in the area of drilling and filling stations) can be used The individual and mutually independent adjustment of the carriages is sufficient to minimize the cycle time, while the carriages can be adjusted synchronously (and therefore with the same belt drive) from the extraction station to the loading station without any negative impact on the cycle time. influence.

The drives mentioned are examples only and are not exhaustive.

At least one clamping device 30 for the brush body 32 is mounted on each carriage 12 . In the illustrated embodiment, two clamping devices 30 are used per carriage. If necessary, additional clamping devices can be provided.

Each clamping device 30 is pivotable or tiltable about two axes. On the one hand, a pivot device 36 is provided, by means of which each clamping device 30 can be pivoted about the pivot axis S. This pivot axis S is aligned parallel to the slide adjustment direction.

In addition, a tilting device 38 is provided, with which the clamping device 30 can be tilted about the tilting axis K. The tilt axis K is perpendicular to the adjustment direction V of the slide 12 .

Furthermore, a height adjustment device 40 is provided, with which the bracket 34 can be adjusted vertically, ie in the direction of the double arrow H, relative to the slide 12 .

With reference to the orientation of the brush making machine as illustrated in Figures 1 and 2, the height adjustment device 40 adjusts the bracket 34 vertically, ie upward and downward. The tilting device 38 can tilt the associated clamping device 30 , with reference to FIG. 1 , in clockwise and counterclockwise directions about the tilting axis K (see double arrow K in FIG. 1 ). The pivoting device 36 can pivot the associated clamping device 30 , with reference to FIG. 1 , in clockwise and counterclockwise directions about the pivot axis S (see double arrow S in FIG. 2 ).

Statements such as "above" are to be understood herein only as reference to the accompanying drawings. The brush making machine can be rearranged later as the guide portion 26 does not have to be in a horizontally extending plane as shown in the figure.

In order to adjust the slide 12 along the guide section 26 , an actuating device 48 is provided, as shown in the schematic diagram here, which can be freely programmed as required. Depending on the required process steps, the control device 48 controls at what speed and in what steps the carriage 12 is adjusted along the guide portion 26 .

Processing stations perform various processing steps. By way of example, the processing station 14 can be a loading station, where an empty clamping device 30 picks up the brush body 32 to be processed.

Here, the processing station 16 is a drilling station, in which a drill bit 50 is used to drill holes in the brush body 32 using a reciprocating movement in the direction of the double arrow B. The required longitudinal adjustment of the brush body 32 , ie along the adjustment direction V of the slide 12 above the guide 26 , is achieved by adjusting the slide 12 in small steps relative to the processing station 16 using the drive 28 This is achieved, more precisely, for each column of holes to be drilled around the hole spacing. In the vertical direction, the height adjustment device 40 is used to adjust the brush body 32, more precisely for each row of holes to be drilled around the hole spacing. If it is desired to drill holes in the brush body 32 in non-parallel directions, the pivoting device 36 and the tilting device 38 are used to pivot and/or tilt the brush body 32 in a suitable manner.

Here, the processing station 18 is a filling station, where the filling tool 52 reciprocates in the direction of the double arrow P to fill the holes of the brush body 32 with the bundles of bristles 60 stored in the storage box 54 . Here too, the brush body 32 is positioned relative to the filling tool 52 by appropriate manipulation of the drive device 28 , the height adjustment device 40 , the pivot device 36 and the tilting device 38 .

The processing station 20 can be an extraction station, where the brush body 32 with the bristle bundles can be removed from the clamping tool 30 or simply ejected.

Other processing stations related to the processing steps performed with the brush making machine may be used. For example, a trimming station can be provided, where the bristles 60 installed on the brush body 32 can be shortened and/or polished to achieve a desired length and/or desired shape. In this case, the extraction station 20 is of course arranged behind the trimming station when viewed in the adjustment direction V.

The brush manufacturing machine can be connected to the injection molding station so that the brush body is first injection molded or other spare parts are molded onto the already made brush body at the adjacent injection molding station. The brush body is then transported from the injection molding station manually or preferably fully automatically to the brush manufacturing machine and is coupled to the brush manufacturing machine at the loading station. This system can be completed in a variety of ways. When the bracket does not leave the brush making machine, the brush body is inserted into the bracket in the brush making machine. Alternatively, at the loading station, the rack can be placed into a brush-making machine that is already loaded. In the illustrated embodiment, however, the carriage circulates within the brush-making machine and therefore does not leave the brush-making machine.

It is also possible to "double" equip the brush-making machine, i.e. have one half with a loading station, various processing stations and an extraction station, and then have a loading station, multiple processing stations and an extraction station in the second half. In this way, the number of brushes produced per cycle can be doubled.

The main feature of the brush making machine is that the brush bodies are pre-positioned before they go to the next processing station. Please refer to the description of Figure 3 for this point. The filling tool 52 can be seen in Figure 3 filling the last hole of the brush body 32A with the tufts of bristles. Since the bristles 60 are arranged in a fan shape when viewed in the plan view of FIG. 3 , when the brush body 32 passes the filling tool 52 from left to right, the brush body 32 must be tilted clockwise around the tilt axis K.

Before the slide seat 12B carrying the brush body 32B reaches the processing station 18, the brush body 32B is tilted counterclockwise from the neutral position to the position shown in the figure. Through this action, the brush body 32B to be processed next is pre-positioned accordingly. Bit. In this position, the longitudinal axis L of the first hole to be filled in the brush body 32B is parallel to the filling direction P of the filling tool 52 .

This prepositioning can take place on the one hand during the movement of the feed material from one processing station to the next, or by a short stop immediately before the next processing station. This depends first of all on how far apart the processing stations are from each other and how much time is spent on pre-positioning, which is also related to the geometry of the brushes to be produced.

When all the holes in the brush body 32A are filled with bristles, continue to adjust the sliding seat 12A in the adjustment direction V, and at the same time continue to adjust the sliding seat 12B in the adjustment direction V. Because the brush body 32B has been "correctly" calibrated, the filling tool 52 can continue working without delay. In fact, the brush body 32B in the pre-positioned state may be closer to the brush body 32A currently being processed than in the case shown in FIG. 3 . Then, when processing continues from brush body 32A to brush body 32B, only minimal adjustment of brush body 32B is required in the longitudinal direction (ie in the adjustment direction V). In an ideal situation, the necessary adjustment movements are so small that the filling tool can work continuously without interruption, and the adjustment is no different or at least not significantly different from the adjustment required to fill the same brush body hole by hole.

It can be seen that the processing cycle of drilling the brush body and then filling the bristles depends on the "slowest" of the two processing stations: drilling and filling; because the number of holes drilled on each brush body must be filled, the number of holes must be filled. , so one of the two stations will not work faster than the other. If one station is indeed faster than another, the former must wait until the other station's work is completed.

It has been confirmed that the current drilling process shows a "bottleneck". Taking into account that the drill chips must be removed from the hole and that in addition the material cannot be processed easily and quickly (there is a risk of melting of the material with the plastic brush body), the current processing limits are reached using ordinary drill bits and ordinary drilling techniques.

The object of the present invention is to provide a method of manufacturing a brush and a brush manufacturing machine, both of which can further increase the processing speed.

To achieve this object, the present invention provides a method for manufacturing brushes by means of a brush manufacturing machine, which brush manufacturing machine includes a guide portion along which a plurality of slides can be moved sequentially to a plurality of drilling stations and subsequently to at least A filling station in which the drilling station operates simultaneously with at least one filling station and in which the number of drilling cycles per unit time of each drilling station is equal to the number of filling cycles of the at least one filling station in the same unit time , divided by the ratio of the number of drilling stations to the number of filling stations. To achieve this goal, the present invention also provides a brush making machine, especially for implementing the above method. The brush making machine includes a guide part and a plurality of sliding seats. The sliding seats can accommodate one or more brush bodies and are adjustably mounted on the brush body. The guide part includes a plurality of drilling stations and a filling station, wherein the guide part extends along the plurality of drilling stations and then along the filling station, and also includes a control device, and the control device has a loop distributor module, The loop distributor module reduces the loop speed of the filling station to the loop speed of each drilling station, which is one-nth of the loop speed of the drilling station, where n is the same as the loop speed of the filling station. The number is proportional to the number of drilling stations.

Based on this idea, the present invention allocates the work of drilling holes on the brush body to two or more drilling stations, and reduces the loop speed of the drilling stations corresponding to the ratio of drilling stations to filling stations. This makes it possible to fill at two-thirds of the filling circle speed (if there are three drilling stations and two filling stations), at one-half the filling circle speed (if the existing drilling station is a filling station) Twice) or one-third, one-quarter, ... filling loop speed (if three, four, ... drilling stations are present) drilling. This leaves enough time to drill using standard drill bits without having to resort to complex techniques, which may allow for faster drilling.

"Cycle speed" refers to the rate at which a cycle (such as filling a hole or drilling a hole) is performed. For example, if two drilling stations are provided for one filling station, a recirculation speed of 50 holes/second during drilling and 100 holes/second during filling can be used. Correspondingly, the "loop ratio" is the quantity ratio between the different processing stations and the resulting reduction in the loop speed of the drilling station in proportion to the loop speed of the filling station.

If there are two drilling stations, it can be provided according to one embodiment that the hole pattern drilled by one drilling station matches the hole pattern drilled by the other drilling station by staggering a row of holes. This reduces the effort involved in programming drilling plans because the drill bits can be adjusted simultaneously for both drilling stations. If the holes drilled at the same time are in different directions from each other, only a small adjustment of the brush body angle can be made at most.

It can also be specified that all drilling stations drill exactly the same hole pattern, but when a drilling station has drilled "its" part of the hole pattern, the brush body must be further adjusted. This reduces the programming and control effort for the drilling station, since only a single hole pattern has to be programmed.

To further reduce operating workload, drilling stations can be operated simultaneously with each other.

Preferably, the carriage is continuously adjusted simultaneously within two drilling stations and a filling station, ie simultaneously from the first drilling station to the next, and from the second drilling station to the next or to the filling station, and from the filling station to other processing stations. This reduces cycle time for making brushes.

Figure 4 illustrates an embodiment of a brush making machine according to the invention. The same symbols are used for structural components known from Figures 1 to 3 and to this extent reference is made to the above description.

The difference between the brush manufacturing machine illustrated in FIG. 4 and the brush manufacturing machine illustrated in FIGS. 1 to 3 is that in the embodiment according to FIG. 4 there are two drilling stations, namely drilling station 16A. and drilling station 16B.

The two drilling stations 16A, 16B are controlled by a control device 48 like the filling station 18 .

Another difference between the brush making machines known from the prior art and the brush making machine illustrated in FIG. 4 is that the brush making machine according to the invention is provided with a loop distributor module 49 . This loop distributor module is integrated into the control device 48 .

The purpose of this loop distributor module is to define the loop speed of the drilling stations 16A, 16B, more precisely at a fixed reduction ratio relative to the loop speed of the filling station 18 . This reduction ratio corresponds to the ratio between the number of drilling stations and the number of filling stations. In the illustrated embodiment one filling station 18 and two drilling stations 16A, 16B are used. Therefore, the loop distributor module 49 reduces the loop speed of the filling station 18 by a ratio of 2:1. In other words: the loop speed of the drilling station 16A, 16B is half the loop speed of the filling station.

The reduction ratio can be set according to the machine configuration, but is constant during machine operation.

In order to obtain a higher recovery rate overall, each drilling station 16A, 16B drills half of the holes that need to be drilled in the brush body 32 .

It can also be provided that the brush bodies 32 are moved synchronously with each other in the drilling stations 16A, 16B, so that the drilling station 16A drills holes 1, 3, 5, 7, ... in a row of holes in a brush body 32. ..., while the drilling station 16B simultaneously drills the holes 2, 4, 6, 8, ... in the same row of holes on the other brush body 32.

It may also be provided that half of the holes are drilled by drilling station 16A in a different sequence than the other half of the holes are drilled by drilling station 16B.

Particularly preferably, all drilling stations operate synchronously, that is, the same complete hole pattern is drilled at the same time. Next, this will be explained based on FIG. 4 .

Looking at a particular brush moving along the guide section, the brush first encounters the drilling station 16B. This drilling station (in this case using half the cycle speed of the filling station 18) drills all the holes to be drilled in a brush body. For example, start from the left side of the brush body 32 and drill all the holes on the left side first.

After drilling the last hole on the left half of the brush body 32 at the drilling station 16B, the slide continues to move so that the new brush body 32 enters the drilling station 16B. Since the drilling station 16B always drills the complete hole pattern, the holes are now drilled on the right half of the brush body 32, however on the "new" brush body.

The "old" brush body 32 is continued to the drilling station 16A, where the right half of the hole is drilled in the old brush body.

When this step is completed, the slide continues to be adjusted so that the drilling station 16A now drills the left hole on the next brush body, while the drilling station 16B drills the right side of the "new" brush body.

Importantly, each drilling station spends as much time drilling "their" holes as the filling station spends filling all the holes of a brush body 32 with bristles.

10: Guide block

12:Sliding seat

12A:Sliding seat

12B:Sliding seat

14:Loading station

16:Drilling Station

16A:Drilling station

16B:Drilling station

18: Filling station

20: Extraction station

22:Processing station

24:Processing station

26:Guide part

28:Driving device

30: Clamping device

32:Brush the body

32A:Brush body

32B:Brush body

34: Bracket

36: Pivot device

38:Tilt device

40: Height adjustment device

48:Control device

49:Loop distributor module

50:Drill bit

52: Fill tool

54: Reserve box

60:Bristles

K: tilt axis

S: pivot axis

Next, the invention is described with reference to the accompanying drawings. In the diagram:

- Figure 1 illustrates a schematic plan view of a prior art brush manufacturing machine;

- Figure 2 shows a schematic cross-section along line II-II in Figure 1;

- Figure 3 shows an enlarged view of a processing station with a brush body currently being processed and a pre-positioned brush body to be processed; and

- Figure 4 illustrates a brush making machine according to the invention in a schematic plan view.

Domestic storage information (please note in order of storage institution, date and number) without

Overseas storage information (please note in order of storage country, institution, date, and number) without

10: Guide block

12:Sliding seat

14:Loading station

16A:Drilling station

16B:Drilling station

18: Filling station

20: Extraction station

22:Processing station

24:Processing station

30: Clamping device

32:Brush the body

38:Tilt device

48:Control device

49:Loop distributor module

50:Drill bit

52: Fill tool

54: Reserve box

60:Bristles

K: tilt axis

Claims (6)

A method of manufacturing brushes using a brush making machine, which brush making machine includes a guide part (26) along which a plurality of slides (12) can be directed to a plurality of drilling stations (16A, 16B) in sequence and then moving to at least one filling station (18), wherein the drilling stations (16A, 16B) are operated simultaneously with the at least one filling station (18), and wherein each drilling station (16A, 16B) per unit time The number of drilling cycles within is equal to the number of filling cycles of the at least one filling station (18) in the same unit of time, divided by the ratio of the number of drilling stations to the number of filling stations, where exactly two drillings are provided Stations (16A, 16B) operating at half the cycle speed of the filling station (18), with holes drilled by one of the drilling stations (16A, 16B) The hole pattern is consistent with the hole pattern drilled by another drilling station (16A, 16B), staggered by a row of holes. Method according to claim 1, wherein exactly three drilling stations (16) are provided, which drilling stations (16) operate at one third of the cycle speed of the filling station (18). The method of claim 1 or 2, wherein the drilling stations (16) operate synchronously with each other. The method as described in claim 3, wherein all drilling stations (16A, 16B) drill the same hole type accurately, but if a drilling station has drilled the corresponding part of the corresponding loop ratio, rule Continue to adjust multiple brush bodies (32). The method of claim 1 or 2, wherein the sliding seats (12) are continuously adjusted simultaneously in the two drilling stations (16A, 16B) and the filling station (18). A brush manufacturing machine especially for carrying out the method according to one of the claims 1 to 5, the brush manufacturing machine comprising a guide part (26), a plurality of sliding seats (12), the plurality of sliding seats (12) One or more brush bodies (32) can be accommodated and adjustably mounted on the guide portion (26), including a plurality of drilling stations (16A, 16B) and a filling station (18), wherein the guide portion The portion (26) extends along the plurality of drilling stations (16A, 16B) and later along the filling station (18), and also includes a control device (48) having a loop distribution The loop distributor module (49) reduces the loop speed of the filling station (18) to the loop speed of each drilling station (16A, 16B). The speed is one n times the cycle speed of the drilling station (16), where n is the number of drilling stations (16A, 16B) proportional to the number of filling stations (18).