Magazine strips for a typesetting machine

Abstract

The invention relates to a magazine strip (38) for a setting device (12), comprising a plastic collation (36) in which a plurality of setting elements (16) are received that can be driven into a workpiece, in particular made of concrete or stone, by means of the setting device (12). It is proposed that the setting elements (16) be designed as threaded bolts (70).

Description

[0001] The invention relates to a magazine strip for a setting tool according to the preamble of independent claim 1. State of the art

[0002] It is common practice to use setting tools with individual setting elements, for example in the form of nails or threaded bolts, which must be inserted individually from the front into a nose of the setting tool. After the setting process, various fasteners, such as clamps, hooks, etc., can then be screwed onto a threaded section of a threaded bolt. To increase the processing speed of nail setting tools, the setting elements designed as nails are often connected to rigid or flexible magazine strips, which allow for automatic reloading of a new nail from a magazine of the nail setting tool during nail setting.

[0003] EP 3 256 746 B1, for example, shows a nail strip for a nail-setting tool with several interconnected nails for connecting at least two components, each having a nail shank and a nail tip provided at its end. The nails of the nail strip are made of wood and / or wood-based materials and / or materials containing bamboo or palm tissue and are connected by separable fasteners that are automatically sheared off when the nail is set.

[0004] Furthermore, magazine strips for setting tools are already known. These have a plastic collet in which a plurality of nails are accommodated that can be driven into a concrete or stone workpiece using the setting tool. Typically, the magazine strips contain 10 nails, with two magazine strips being insertable into a magazine of the setting tool.

[0005] This means that an operator has to refill the magazine after driving in 20 nails.

[0006] The object of the invention is to improve the processing speed of a setting tool with which setting elements can be driven automatically, in particular into a workpiece made of concrete or stone, also for setting elements which enable a reversible fastening of further fastening means. Advantages of the invention

[0007] To achieve this objective, the setting elements are designed as threaded bolts. This has the particular advantage of significantly increasing productivity during series setting operations thanks to the automatic reloading of the threaded bolts. The risk of threaded bolts falling out or getting lost is also reduced compared to individual setting operations. Particularly for smaller threaded bolts with small thread diameters (e.g., with metric threads M4, M6, or similar) and short setting shafts, a collation can significantly improve handling, especially since the setup effort when changing from a nail strip to a magazine strip according to the invention with threaded bolts is very low. A collation is understood to be a device that connects the individual setting elements to one another to form the magazine strip. The collation is made of a thermoplastic elastomer or a hard plastic, e.g., a thermoplastic or thermoset.While a thermoplastic elastomer allows for greater flexibility of the magazine strip and thus also for rolling up in a drum magazine, a hard plastic makes it easier to insert the magazine strip into a straight magazine.

[0008] In a further embodiment of the invention, the collet has a receptacle for each threaded bolt, comprising a first section for a threaded portion of the threaded bolt and a second section for a setting shaft of the threaded bolt. This ensures particularly secure fixation of the threaded bolts in the collet of the magazine strip.

[0009] In addition, two adjacent receptacles of the collet are connected to one another by at least two shearing webs, with a first shearing web arranged on the first section and at least a second shearing web arranged on the second section of the receptacles. The shearing webs enable simple and targeted separation of two adjacent receptacles of the collet during the setting process. Because each receptacle of the collet can engage multiple points on the threaded bolt and the magazine, such a connection between the individual receptacles ensures better guidance in the magazine and / or in the nose of the setting tool during the setting process, in order to prevent jamming or tilting of the threaded bolt to be driven in.

[0010] To ensure that the magazine strip can only be inserted for the magazines of the setting tool intended for it, one of the receptacles - or in particular all of the receptacles - of the collation has a mechanical coding on its second section, which interacts with a corresponding counter-coding of the magazine of the setting tool. For this purpose, the mechanical coding is designed as at least one projection on the second section, which interacts with at least one groove of the counter-coding of the magazine running along an insertion direction of the magazine strip. Alternatively or additionally, the at least one projection can also be annular and interact with two oppositely arranged grooves of the counter-coding of the magazine running along the setting direction of the magazine strip. Thus, a plurality of magazine strips with threaded bolts of different lengths and thread sizes (e.g., in the case of a metric thread M3, M4, M5, etc.) can be used.) may only be used in conjunction with suitable magazines.

[0011] The at least one second shearing bar can preferably be arranged on the at least one projection. Thus, the shearing bar can be designed to be particularly short, similar to the first shearing bar arranged on the first section of the receptacle, which increases the rigidity of the magazine strip and thus improves handling.

[0012] In a further embodiment, the receptacle has at least one window section which only partially encompasses the setting shaft of the threaded bolt over its circumference, in particular to a maximum of 20%. Because the window section is pressed together when the threaded bolt is driven in, it acts as a defined boundary in conjunction with the projection and the first section of the receptacle. In addition, this can prevent the setting shaft of the threaded bolt from penetrating the workpiece insufficiently deeply due to over-compressed plastic of the collet. Particularly preferably, the at least one window section is arranged between the first and the second section in the axial direction of the threaded bolt.

[0013] The first section encompasses the threaded section of the threaded bolt in the axial direction by at least 25%, preferably 50%. Thus, the first section serves as mechanical protection for the thread.

[0014] To facilitate insertion of the magazine strip into the magazine of the setting tool, the first section only partially encompasses the threaded section of the threaded bolt, specifically, up to a maximum of 50%. This also allows for a narrower design of the magazine strip.

[0015] Furthermore, when the threaded bolt is inserted into the receptacle, an internal thread complementary to the threaded section is formed in the first section. This allows for a self-locking thread lock for a fastener screwed onto the thread.

[0016] To make it easier for the operator to identify magazine strips with different threaded bolts, the first section and at least one second section are colored differently. The more sections or projections the holder or collation has, the more coding options are available. Examples of implementationDrawing

[0017] The invention is described below with reference to Fig. 1 to 5 are explained by way of example, wherein the same reference numerals in the figures indicate the same components with the same mode of operation.

[0018] It shows Fig. 1: a state-of-the-art setting tool designed as a battery-powered concrete nailer in a schematic representation, Fig. 2: a magazine of the setting tool partially filled with a nail magazine strip according to Fig. 1 in a perspective view, Fig. 3: a plan view of a lower opening of the magazine according to Fig. 2, Fig. 4: a first embodiment of a magazine strip according to the invention for a magazine of the setting tool in a perspective view, Fig. 5: a second embodiment of the magazine strip according to the invention for a magazine of the setting tool in a side view. Fig. 6: a third embodiment of the magazine strip according to the invention for a magazine of the setting tool in a front view. Description of the embodiments

[0019] In Fig. Figure 1 shows a schematic representation of a prior art setting tool 12 designed as a battery-powered concrete nailer 10. An electric motor (not shown) is arranged in a housing 14 of the setting tool 12 consisting of two half-shells. This electric motor drives a percussion mechanism (also not shown) for driving in a setting element 18 designed as a nail 16 (see Figure 1). Fig. 2). The electric motor and control and power electronics arranged in the device are supplied with energy via a replaceable battery pack 20. The replaceable battery pack 20 typically has a battery voltage of 18 V and is equipped with a plurality of Li-ion energy storage cells. The energy supply and drive train of the setting tool 12 will not be discussed in further detail here, as this is of secondary importance for the invention and is also part of the prior art. However, it should be pointed out as a precaution that the invention is not limited to the design of the setting tool 12 and its energy supply. For example, setting tools 12 with different battery voltages as well as with a permanently integrated battery or a mains supply (e.g. 230 V, 110 V or the like) can also be used for the invention.

[0020] The battery-powered concrete nailer 10 can be operated via the power button of a rear and therefore in Fig. 1 invisible human-machine interface (HMI). The HMI is also used to display the status and reset the cordless concrete nailer 10 as well as to display the charge level of the plugged-in interchangeable battery pack 20. A trigger button 24 is arranged in a handle 22 of the housing 14, which must be unlocked with a release button 25 before the setting process is initiated. The cordless concrete nailer 10 has an engageable contact element 26 with a mouth 28 at a front end. The contact element 26 can be unlocked if necessary using a release button 30 in order to separate it from the cordless concrete nailer 10. This can be necessary in particular in conjunction with setting elements 18 of different diameters. To enable the setting process, the contact element 26 must be placed all the way onto a workpiece to be worked on, e.g. a concrete wall.When the contact element 26 is pressed in, a workstation light 32 illuminates the work area of ​​the workpiece to make processing easier for the operator, particularly in poor lighting conditions. The driving process is started by pressing the trigger button 24 within a time window of, for example, 2 seconds after the contact element 26 is engaged. The nail 16 is driven into the workpiece along a driving direction S. If the trigger occurs after the time window has expired, the cordless concrete nailer 10 goes into a secured state and the driving process must be restarted. To start another driving process, the operator must completely lift the cordless concrete nailer 10 from the substrate and firmly place it again at the next desired location. The driving depth of the nail 16 into the workpiece can be set using a depth stop switch 34.

[0021] As mentioned at the beginning, the setting elements 18 designed as nails 16 are often connected by means of a plastic collation 36 to form a magazine strip 38, which allows for automatic reloading of a new nail 16 from a magazine 40 of the setting tool 12 during driving in. This is Fig. 2. To fill the magazine 40 with the magazine strip 38, the operator must press a release button 42 of a magazine slide 44 and slide the magazine slide 44 towards a lower opening 46 of the magazine 40 until it clicks into place. He can then insert a suitable magazine strip 38 along an insertion direction E into the opening 46. Typically, two magazine strips 38 can be inserted into the magazine 40, each containing ten nails 16 connected by means of the collation 36. After a magazine strip 38 has been inserted into the magazine 40 along the insertion direction E, the magazine slide 44 must be pushed to the upper stop with the release button 42 pressed. The cordless concrete nailer 10 is then ready for use.To empty the magazine 40, the magazine slide 44 is moved in a similar manner, counter to the insertion direction E, toward the lower opening 46 of the magazine 40 until it engages, allowing the magazine strip 38 to slide out of the opening 46. A support foot 48 of the magazine 40, located adjacent to the lower opening 46, facilitates vertical alignment of the cordless concrete nailer 10 on a flat workpiece. The magazine 40 can be unlocked using a release lever 50 and then replaced with another magazine 40.

[0022] In Fig. 3, the magazine 40 is shown in a plan view of its lower opening 46. A magazine strip 38 is inserted into the magazine 40, the individual setting elements 18 of which are designed as nails 16 and are connected to one another via the collation 36. Each nail 16 is held in a receptacle 52 of the collation 36 such that a setting shaft 54 ​​of the nail 16 is fixed by two sections 58, 60 connected via a window section 56. The two sections 58, 60 of the collation 36 are each designed as an annular projection 62 and serve to guide the magazine strip 38 in corresponding grooves 64 along the setting direction M. In particular, the second section 60 fulfills the purpose of a mechanical coding 66, which interacts with the grooves 64 of the magazine 40 in the sense of a counter coding 68. In this way, it is possible for a magazine 40 to be filled only with a magazine strip 38 in which a specific type of nails 16 is collated.

[0023] In Fig. Figure 4 shows a first embodiment of the magazine strip 38 according to the invention for the magazine 40 in a perspective view. The individual setting elements 18 are designed as threaded bolts 70. Each threaded bolt 70 has a threaded portion 72 and a setting shaft 54 ​​to be driven into the workpiece, which in particular consists of concrete or stone, by means of the setting tool 12. The driving in takes place in an analogous manner with the Fig. 1 and Fig. 2. However, it is also conceivable to use a setting tool 12 specifically designed for driving threaded bolts 70 instead of a concrete nailer 10. Furthermore, the setting tool 12 can also be powered by a power cable or a permanently integrated battery instead of a removable battery pack 20. The invention is likewise applicable to setting tools whose impact mechanisms are powered by gas, black powder, or the like. The magazine 40 itself does not have to differ from magazines 40 suitable for driving setting elements 18 designed as nails 16. For example, a magazine 40 can be used that is suitable for setting elements 18 with a wide variety of head geometries and sizes. However, it is also conceivable to use a magazine 40 that is specifically designed for driving setting elements 18 designed as threaded bolts 70 of a defined size.

[0024] After the setting process, various fastening devices, such as clamps, hooks, etc., can be screwed onto the threaded section 72 of the threaded bolt 70. This means that productivity during series setting can be significantly increased by the automatic reloading of the threaded bolts 70 compared to the use of individual threaded bolts 70. The risk of a threaded bolt 70 falling off or getting lost is also reduced compared to a single setting. In particular for smaller threaded bolts 70 with small thread diameters (e.g. with metric threads M4, M6 or the like) and short setting shanks 54, the collation 36 thus significantly improves handling. This has a receptacle 52 for each threaded bolt 70, which comprises a first section 58 for the threaded section 72 and a second section 60 for the setting shank 54 of the threaded bolt 70.In this way, a particularly secure fixation of the threaded bolt 70 in the collet 36 of the magazine strip 38 is ensured.

[0025] The first section 58 of the collet 36 encompasses the threaded section 72 of the threaded bolt 70 over its circumference and in the axial direction or in the setting direction S to approximately 50%. This makes the thread size of the threaded section 72 more visible to the operator and makes it easier to insert the magazine strip 38 into the magazine 40. On the other hand, this provides at least partial protection of the thread on the threaded section 72 against any mechanical damage. In addition, this results in a narrower design of the magazine strip 38 in order to increase packaging density and facilitate storage. When the threaded bolts 70 are inserted into the receptacles 52 of the collet 36 by the manufacturer, an internal thread complementary to the threaded section 72 is formed in the first sections 58 of the receptacles 52.Since the first sections 58 are only pressed in their lower part during the setting process of the threaded bolts 70, a self-locking thread lock for a fastener screwed onto the thread of the threaded section 72 can be realized in this way. Alternatively, it is also conceivable for the first section 58 to completely enclose the threaded section 72 over its circumference and / or over its axial length. The collation 36 consists of a thermoplastic elastomer or a hard plastic, e.g. a thermoplastic or duroplastic. A thermoplastic elastomer enables greater flexibility of the magazine strip 38 and thus also rolling up in a drum magazine, whereas a hard plastic makes it easier to insert the magazine strip 38 into a straight magazine 40. In addition, a hard plastic can also be used to realize a more reliable and, if necessary, multiple-use thread lock.

[0026] In order to enable the insertion of the magazine strip 38 only for magazines 40 of the setting tool 12 intended for it, the receptacles 52 of the collation 36 each have a mechanical coding 66 on their second section 60, which interacts with a corresponding counter-coding 68 of the magazine 40. The mechanical coding 66 is designed as an annular projection 62 on the second section 60, which interacts with two opposing grooves 64 of the counter-coding 68 of the magazine 40, running along the insertion direction E of the magazine strip 38. Alternatively or additionally, the projection 62 can also be designed on one side only, for example as a protruding nose, which interacts with only one groove 64 of the counter-coding 68 of the magazine 40, running along the insertion direction E of the magazine strip 38. Thus, a plurality of magazine strips 38 with threaded bolts of different lengths and thread sizes (e.g.in the case of a metric thread M3, M4, M5, etc.) in conjunction with suitable magazines 40.

[0027] The adjacent receptacles 52 of the collet 36 are each connected to one another by two shearing webs 74 such that a first shearing web 74 is arranged on the first section 58 and a second shearing web 74 is arranged on the second section 60 of the receptacles 52. The shearing webs 74 enable simple and targeted separation of the receptacles 52 during the setting process. Since each receptacle 52 of the collet 36 also engages two points on the threaded bolt 68 and the magazine 40 along the setting direction S, canting or tilting of the threaded bolt 68 to be driven in is effectively prevented during the setting process. The second shearing web 74 is arranged on the projection 62. Thus, the shearing web 74 can be designed to be particularly short, similar to the first shearing web 74 arranged on the first section 58 of the receptacle 52, which increases the rigidity of the magazine strip 38 and thus improves handling.

[0028] The first and second sections 58, 60 of the receptacle 52 are connected to one another via a window section 56, which encompasses approximately 20% of the circumference of the setting shaft 54 ​​of the threaded bolt 70. During the setting process of the threaded bolt 70, the window section 56 is compressed in such a way that it acts as a defined boundary in conjunction with the likewise compressed projection 62 and the lower part of the first section 58 of the receptacle 52. Furthermore, the window section 56 can prevent the setting shaft 54 ​​of the threaded bolt 70 from penetrating the workpiece insufficiently due to excessively compressed plastic of the collet 36.

[0029] In Fig. 5 shows a further embodiment of the magazine strip 38 according to the invention for a magazine 40 of the setting tool 12 in a side view. This embodiment differs substantially from that according to Fig. 4 in that the first section 58 does not enclose the threaded section 72 of the threaded bolt 70. Otherwise, each receptacle 52 of the collation 36 further has a first and a second section 58, 60, which are connected to one another by a window section 56. The adjacent receptacles 52 of the collation 36 are each connected to one another by two shear-off webs 74 such that a first shear-off web 74 is arranged on the first section 58 and a second shear-off web 74 is arranged on the second section 60 of the receptacles 52. In addition, here too, the second section 60 is designed as an annular projection 62, which interacts as a mechanical coding 66 with opposite grooves 64 of the counter coding 68 of the magazine 40, which run along the insertion direction E of the magazine strip 38.

[0030] Fig. Figure 6 shows a third embodiment of the magazine strip 38 according to the invention for a magazine 40 of the setting tool 12 in a front view. In contrast to the embodiment according to Fig. 5, a further, annular projection 76 is provided between the first and second sections 58, 60, which divides the window section 56 into two window sections 56. The further projection 76, in conjunction with the annular projection 62 of the second section 60, serves as a mechanical coding 66, which interacts with opposing grooves 64 of the counter-coding 68 of the magazine 40 (not shown) running along the insertion direction E of the magazine strip 38. In contrast to the previous two embodiments, the magazine now has two further, opposing grooves 64 as counter-coding 68.

[0031] Finally, it should be noted that the illustrated embodiments do not refer to the Fig. 4 and Fig.5 is still limited to the values ​​mentioned therein regarding the engagement of the threaded bolt 70 by the individual sections 56, 58, 60. It is also conceivable, without limiting the invention, that the threaded bolts can be inserted into workpieces made of other materials, such as wood or plastic, in addition to workpieces made of concrete and stone. Furthermore, a magazine strip 38 according to the invention can also collide more or fewer than ten threaded bolts 70, depending on the size of the threaded bolts 70. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 256 746 B1

[0003]

Claims

[1] Magazine strip (38) for a setting tool (12), with a collation (36) made of plastic, in which a plurality of setting elements (16) which can be driven into a workpiece consisting in particular of concrete or stone by means of the setting tool (12) are accommodated, characterized by that the setting elements (16) are designed as threaded bolts (70). [2] Magazine strip (38) according to claim 1, characterized by that the collation (36) has a receptacle (52) for each threaded bolt (70), which receptacle comprises a first section (58) for a threaded section (72) of the threaded bolt (70) and a second section (60) for a setting shaft (54) of the threaded bolt (70). [3] Magazine strip (38) according to claim 2, characterized byin that two adjacent receptacles (52) of the collation (36) are connected to one another by at least two shearing webs (74), wherein a first shearing web (74) is arranged on the first section (58) and at least one second shearing web (74) is arranged on the second section (60) of the receptacles (52). [4] Magazine strip (38) according to one of the preceding claims, characterized by that at least one of the receptacles (52), in particular all of the receptacles (52), of the collation (36) has / have a mechanical coding (66) on its second section (60), which interacts with a corresponding counter-coding (68) of a magazine (40) of the setting tool (10). [5] Magazine strip (38) according to claim 4, characterized bythat the mechanical coding (66) is designed as at least one projection (62) on the second section (60) which cooperates with at least one groove (64) of the counter coding (78) of the magazine (40) running along an insertion direction (E) of the magazine strip (38). [6] Magazine strip (38) according to claim 5, characterized by that the at least one projection (62) is annular and cooperates with two oppositely arranged grooves (64) of the counter coding (68) of the magazine (40) running along the insertion direction (E) of the magazine strip (38). [7] Magazine strip (38) according to one of the preceding claims 5 or 6, characterized by that the at least one second shearing web (74) is arranged on the at least one projection (62). [8] Magazine strip (38) according to one of the preceding claims 2 to 7, characterized bythat the receptacle (52) has at least one window section (56) which only partially encompasses the setting shaft (54) of the threaded bolt (70) over its circumference, in particular to a maximum of 20%. [9] Magazine strip (38) according to claim 8, characterized by that the at least one window section (56) is arranged in the axial direction of the threaded bolt (70) between the first and the second section (58, 60). [10] Magazine strip (38) according to one of the preceding claims 2 to 9, characterized by that the first section (58) encompasses the threaded section (72) in the axial direction of the threaded bolt (70) by at least 25%, preferably by 50%. [11] Magazine strip (38) according to one of the preceding claims 2 to 10, characterized by that the first section (58) only partially encompasses the threaded section (72) of the threaded bolt (70) over its circumference, in particular to a maximum of 50%. [12] Magazine strip (38) according to one of the preceding claims 2 to 11, characterized by that when the threaded bolt (70) is inserted into the receptacle (52), an internal thread complementary to the threaded section (72) is formed in the first section (58). [13] Magazine strip (38) according to one of the preceding claims, characterized by that the plastic of the collet (36) is a thermoplastic elastomer. [14] Magazine strip (38) according to one of the preceding claims 1 to 13, characterized by that the plastic of the collation (36) is a thermoplastic or thermoset. [15] Magazine strip (38) according to one of the preceding claims 2 to 14, characterized by that the first section (58) and the second section (60) are colored differently.

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