Wire feeding mechanism of computer spring machine

Abstract

The utility model relates to a wire feeding mechanism of a computer spring machine. A plurality of guide rail mechanisms which are sequentially distributed at intervals along a straight line are arranged on a box body of the wire feeding mechanism; a mounting space is formed between every two adjacent guide rail mechanisms; a guide groove parallel to the straight line is formed in the guide rail mechanism; a driven wire feeding mechanism on the box body is provided with a first wire guide wheel; a driving wire feeding mechanism on the box body is provided with a second wire guide wheel; the second wire guide wheels and the first wire guide wheels are arranged in one-to-one symmetry by taking a straight line as a symmetry axis; the second wire guide wheel is tangent to the first wire guide wheel, the tangent part is located in the mounting space, and the tangent point is located on a straight line; in the process that the steel wire is forcibly fed by the second wire guide wheel and the first wire guide wheel, the steel wire sequentially penetrates through the guide grooves of the guide rail mechanisms to be corrected, and due to the fact that the acting point of the conveying force applied to the steel wire by the second wire guide wheel and the first wire guide wheel, the guide grooves and the straight line are collinear, the correction effect of the guide grooves is guaranteed; and the convenience of processing the steel wire in the subsequent process is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spring machines, in particular to a wire feeding mechanism of a computer spring machine. BACKGROUND

[0002] At present, the wire feeding mechanism of a computer spring machine drives a variable speed gear arranged in a motor base by a servo motor, connects a driving gear arranged on the variable speed gear, and makes the driving gear transmit power to a matched wire feeding gear in a wire feeding box. Then the wire feeding gear drives a wire feeding wheel on the box to control the in-out or movement of the steel wire. That is, the in-out or movement of the steel wire is driven by the friction between the side groove of the wire feeding wheel and the steel wire. However, the following problems exist:

[0003] (1) When the steel wires with different diameters are driven by the wire feeding wheel, the required friction forces are different. If the steel wires with different diameters are replaced, the wire feeding speed is slow.

[0004] (2) The transferred steel wire is bent, which causes the product formed after being transferred into the next process to have defects. Therefore, the steel wire needs to be guided during the wire feeding process. SUMMARY

[0005] The embodiments of the present application provide a wire feeding mechanism of a computer spring machine to solve the problem that the transferred steel wire is bent in the related art, which causes the product formed after being transferred into the next process to have defects. The current wire feeding mechanism does not have a guiding effect.

[0006] In a first aspect, a wire feeding mechanism of a computer spring machine is provided, which includes:

[0007] a box body, which is provided with a plurality of guiding track mechanisms that are distributed along a straight line at intervals; an installation space is formed between adjacent two guiding track mechanisms; a guiding groove parallel to the straight line is arranged in the guiding track mechanism;

[0008] a driven wire feeding mechanism, which is connected with the box body and has a first wire wheel;

[0009] a driving wire feeding mechanism, which is connected with the box body and has a second wire wheel; the second wire wheel and the first wire wheel are symmetrically arranged with the straight line as the axis of symmetry; the second wire wheel and the first wire wheel are tangent to each other, and the tangent part is located in the installation space, and the tangent point is located on the straight line.

[0010] In some embodiments, the guiding track mechanism includes a mounting seat connected with the outer surface of the box body; a connecting plane is arranged on the side of the mounting seat away from the box body; a guide rail connecting groove is arranged on the connecting plane, and a linear guide rail is connected in the guide rail connecting groove; the guiding groove extending along the length direction of the linear guide rail is arranged on the linear guide rail;

[0011] The straight guide rail is provided with a pressing plate on one side of the guide groove; the pressing plate is provided with a supporting lug connected with the connecting plane of the mounting seat.

[0012] In some embodiments, the straight guide rail comprises two oppositely arranged mounting planes, one of which is close to the box; a guide groove is arranged on each mounting plane;

[0013] The pressing plate is arranged on the mounting plane away from the box.

[0014] In some embodiments, in the adjacent two guide rail mechanisms, the top surface of the opposite end of the two straight guide rails is provided with a first arc-shaped avoiding groove matched with the first wire guide wheel; the bottom surface of the opposite end of the two straight guide rails is provided with a second arc-shaped avoiding groove matched with the second wire guide wheel.

[0015] In some embodiments, in the plurality of guide rail mechanisms, the mounting seat of the guide rail mechanism located at one end of the straight guide rail is provided with a wire outlet direction indicating block.

[0016] In some embodiments, the wire feeding mechanism of the computer spring machine further comprises a driving shaft penetrating the box, a first gear connected to the driving shaft, and a driving motor connected to the outside of the box at one end of the driving shaft;

[0017] The box is provided with a transmission shaft; the transmission shaft is provided with a second gear and a third gear; the second gear is engaged with the first gear; the third gear is in transmission connection with the main wire feeding mechanism; the main wire feeding mechanism is in transmission connection with the driven wire feeding mechanism.

[0018] In some embodiments, the main wire feeding mechanism comprises two main shafts arranged side by side and spaced apart in the box, one end of the main shaft is rotatably connected to the side surface of the box, and the other end penetrates the side surface of the box and is connected with the second wire guide wheel; the main shaft is provided with a fourth gear; the third gear is located between the two fourth gears and is engaged with the two fourth gears;

[0019] The driven wire feeding mechanism comprises two driven shafts arranged side by side and spaced apart in the box, one end of the driven shaft is rotatably connected to the side surface of the box, and the other end penetrates the side surface of the box and is connected with the first wire guide wheel; the driven shaft is provided with a fifth gear engaged with the fourth gear.

[0020] In some embodiments, a plurality of vertical avoiding grooves are arranged on the side surface of the first wire guide wheel on the box; a square shaft seat located in the vertical avoiding groove is arranged on each driven shaft;

[0021] The top of the box is provided with a pressing force adjusting mechanism; the abutting end of the pressing force adjusting mechanism extends into the vertical avoiding groove and abuts against the top of the square shaft seat.

[0022] In some embodiments, the top of the box is provided with a vertical screw hole;

[0023] The pressing force adjusting mechanism comprises a spring, the bottom of the spring is connected with a first top block, and the top of the spring is connected with a second top block; the spring is located in the vertical screw hole, and the second top block is threadedly connected with the vertical screw hole.

[0024] In some embodiments, the end of the driving shaft connected with the second wire wheel is provided with a baffle; the baffle is provided with a positioning core column coaxial with the driving shaft; the end of the positioning core column is detachably connected with a pressing block, and the pressing block and the baffle form a clamping space for mounting the second wire wheel;

[0025] The end of the driving shaft connected with the second wire wheel is provided with a baffle; the baffle is provided with a positioning core column coaxial with the driving shaft; the end of the positioning core column is detachably connected with a pressing block, and the pressing block and the baffle form a clamping space for mounting the second wire wheel;

[0026] The technical scheme provided by the present application has the beneficial effects of:

[0027] The computer spring machine wire feeding mechanism provided by the embodiments of the present application is characterized in that a plurality of guide rails are arranged on the box in a straight line; an installation space is formed between two adjacent guide rails; a guide groove parallel to the straight line is arranged in the guide rail; a first wire wheel is arranged on the driven wire feeding mechanism of the box; a second wire wheel is arranged on the driving wire feeding mechanism of the box; the second wire wheel and the first wire wheel are symmetrically arranged with the straight line as the axis of symmetry; the second wire wheel and the first wire wheel are tangent to each other, and the tangent part is located in the installation space, and the tangent point is located on the straight line; in the process of forcibly feeding the steel wire by the second wire wheel and the first wire wheel, the steel wire passes through the guide grooves of the plurality of guide rails in sequence and is corrected; since the action point of the conveying force applied to the steel wire by the second wire wheel and the first wire wheel, the guide groove and the straight line are collinear, the correction effect of the guide groove will not be affected by the application of the conveying force, and the convenience of the steel wire in subsequent processing is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 The computer spring machine wire feeding mechanism provided by the embodiments of the present application shows the three-dimensional structure schematic diagram of the box provided with a plurality of guide rails;

[0030] Figure 2 The sending mechanism of the computer spring machine provided in the embodiment of the present application shows the box body, the driving motor, the driven sending mechanism, and the schematic diagram of the three-dimensional structure of the main sending mechanism;

[0031] Figure 3 The internal structure of the sending mechanism of the computer spring machine provided in the embodiment of the present application is shown;

[0032] Figure 4 The schematic diagram of the transmission connection between the driving motor, the driven sending mechanism, and the main sending mechanism provided in the embodiment of the present application is shown;

[0033] Figure 5 The schematic diagram of the transmission connection between the driven sending mechanism and the main sending mechanism provided in the embodiment of the present application is shown;

[0034] Figure 6 The schematic diagram of the transmission connection between the driving motor, the driven sending mechanism, and the main sending mechanism provided in the embodiment of the present application is shown;

[0035] Figure 7 The schematic diagram of the transmission connection between the driving motor, the driven sending mechanism, and the main sending mechanism provided in the embodiment of the present application is shown.

[0036] In the figure: 1, box body; 2, guide rail mechanism; 200, linear guide rail; 201, mounting seat; 202, pressing plate; 203, lug; 204, first arc-shaped avoidance groove; 205, second arc-shaped avoidance groove; 3, guide groove; 4, driven sending mechanism; 400, driven shaft; 401, fifth gear; 5, first wire guide wheel; 6, main sending mechanism; 600, main shaft; 601, fourth gear; 7, second wire guide wheel; 8, driving shaft; 9, first gear; 10, transmission shaft; 11, second gear; 12, third gear; 13, vertical avoidance groove; 14, square shaft seat; 15, pressure adjustment mechanism; 1500, spring; 1501, first top block; 1502, second top block; 16, pressing block; 17, wire direction indicating block; 18, driving motor. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] The embodiment of the present application provides a wire feeding mechanism of a computer spring machine, so as to solve the problem that the steel wire to be fed is bent in the related art, which leads to the fact that the product formed after being fed into the next process has defects, and the current wire feeding mechanism does not have a guiding effect.

[0039] Please refer to Figure 1 、 Figure 6 、 Figure 7 A wire feeding mechanism of a computer spring machine comprises:

[0040] A box body 1 is provided with a plurality of guiding track mechanisms 2 which are distributed along a straight line in sequence and at intervals; an installation space is formed between the two adjacent guiding track mechanisms 2; the guiding track mechanism 2 is provided with a guiding groove 3 which is parallel to the straight line;

[0041] A driven wire feeding mechanism 4 is connected with the box body 1, and has a first wire guide wheel 5;

[0042] An active wire feeding mechanism 6 is connected with the box body 1, and has a second wire guide wheel 7; the second wire guide wheel 7 and the first wire guide wheel 5 are symmetrically arranged with the straight line as the axis of symmetry; the second wire guide wheel 7 and the first wire guide wheel 5 are tangent to each other, and the tangent part is located in the installation space, and the tangent point is located on the straight line.

[0043] Through the above arrangement, the steel wire is sequentially corrected by passing through the guiding grooves 3 of the plurality of guiding track mechanisms 2 during the forced wire feeding process of the second wire guide wheel 7 and the first wire guide wheel 5; since the action point of the conveying force applied to the steel wire by the second wire guide wheel 7 and the first wire guide wheel 5, the guiding groove 3 and the straight line are collinear, the correction effect of the guiding groove will not be affected by the application of the conveying force, and the convenience of the steel wire in the subsequent process is improved.

[0044] In addition, the plurality of guiding track mechanisms 2 which are distributed along the straight line in sequence and at intervals, and the installation space formed between the two adjacent guiding track mechanisms 2 can avoid the interference between the guiding track mechanism 2 and the second wire guide wheel 7 and the first wire guide wheel 5, and maximize the increase of the guiding stroke.

[0045] In some preferred embodiments, the guiding track mechanism 2 comprises a mounting seat 201 connected with the outer surface of the box body 1; the mounting seat 201 is provided with a connecting plane on the side away from the box body 1; the connecting plane is provided with a guide rail connecting groove, and a linear guide rail 200 is connected in the guide rail connecting groove; and the linear guide rail 200 is provided with the guiding groove 3 extending along the length direction thereof.

[0046] One side of the linear guide rail 200 provided with the guiding groove 3 is provided with a pressing plate 202; and the pressing plate 202 is provided with a supporting lug 203 connected with the connecting plane of the mounting seat 201.

[0047] The specific structure of the guide rail mechanism 2 is introduced above, and the setting of the pressing plate 202 can further ensure the guiding effect, and when the card stagnation occurs, the wire cannot be sent; the pressing plate 202 can be removed to clean the guide groove 3, which is convenient for maintenance.

[0048] Further, the linear guide rail 200 includes two oppositely arranged mounting planes, one of which is close to the box body 1; one guide groove 3 is arranged on each mounting plane;

[0049] The mounting plane away from the box body 1 is provided with a pressing plate 202.

[0050] One of the guide grooves 3 does not have a pressing plate 202, and one of the guide grooves 3 has a pressing plate 202, which can transport the steel wire that does not need to be guided; it can also realize the transportation of two steel wires and improve the efficiency. Of course, the second wire wheel 7 and the first wire wheel 5 are provided with a friction groove for wheel edge conveying; the friction groove is a circular groove coaxial with the second wire wheel 7 and the first wire wheel 5.

[0051] Further, in order to further maximize the increase of the guiding stroke, in the adjacent two guide rail mechanisms 2, the top surfaces of the two linear guide rails 200 opposite one end are each provided with a first arc-shaped avoiding groove 204 adapted to the first wire wheel 5; the bottom surfaces of the two linear guide rails 200 opposite one end are each provided with a second arc-shaped avoiding groove 205 adapted to the second wire wheel 7.

[0052] The above realizes that all parts except the position where the conveying force is effectively applied are guided.

[0053] In some preferred embodiments, in the plurality of guide rail mechanisms 2, the mounting seat 201 of the guide rail mechanism 2 located at one end of the linear guide rail mechanism 2 is provided with a wire outlet direction indicating block 17; the wire outlet direction indicating block 17 can facilitate the operator to identify the steel wire placement order.

[0054] In some preferred embodiments, referring to the accompanying Figures 2-5 The wire feeding mechanism of the computer spring machine further includes a driving shaft 8 penetrating the box body 1, the driving shaft 8 is connected with a first gear 9, and one end of the driving shaft 8 is connected with a driving motor 18 connected to the outside of the box body 1.

[0055] The box body 1 is provided with a transmission shaft 10; the transmission shaft 10 is provided with a second gear 11 and a third gear 12; the second gear 11 is engaged with the first gear 9; the third gear 12 is in transmission connection with the driving wire feeding mechanism 6; the driving wire feeding mechanism 6 is in transmission connection with the driven wire feeding mechanism 4.

[0056] The active wire feeding mechanism 6 comprises two active shafts 600 which are arranged side by side in the box body 1, one end of the active shaft 600 is rotatably connected with the side of the box body 1, and the other end is connected with the second wire guide wheel 7 through the side of the box body 1; the fourth gear 601 is arranged on the active shaft 600; the third gear 12 is located between the two fourth gears 601 and is engaged with the two fourth gears 601.

[0057] The driven wire feeding mechanism 4 comprises two driven shafts 400 which are arranged side by side in the box body 1, one end of the driven shaft 400 is rotatably connected with the side of the box body 1, and the other end is connected with the first wire guide wheel 5 through the side of the box body 1; the fifth gear 401 which is engaged with the fourth gear 601 is arranged on the driven shaft 400.

[0058] The above specifically describes the movement mode of the active wire feeding mechanism 6 and the driven wire feeding mechanism 4, and the connection form with the box body 1.

[0059] In some preferred embodiments, a plurality of vertical avoiding grooves 13 are arranged on the side of the box body 1 which is located on the first wire guide wheel 5; a square shaft seat 14 which is located in the vertical avoiding groove 13 is arranged on each driven shaft 400.

[0060] The top of the box body 1 is provided with a pressing force adjusting mechanism 15; the abutting end of the pressing force adjusting mechanism 15 extends into the vertical avoiding groove 13 and abuts against the top of the square shaft seat 14.

[0061] The embodiment is to solve the problem that the friction force required when the steel wires with different diameters are driven by the wire feeding wheels is different, and the wire feeding speed is slow if the steel wires with different diameters are replaced; when the diameter of the steel wire changes, the pressing force adjusting mechanism 15 is adjusted.

[0062] The top of the box body 1 is provided with a vertical screw hole;

[0063] The pressing force adjusting mechanism 15 comprises a spring 1500, the bottom of the spring 1500 is connected with a first top block 1501, and the top of the spring 1500 is connected with a second top block 1502; the spring 1500 is located in the vertical screw hole, and the second top block 1502 is threadedly connected with the vertical screw hole.

[0064] In order to realize the conveying of steel wires with different diameters and facilitate the replacement of the second wire guide wheel 7 and the first wire guide wheel 5, the following settings are made:

[0065] The end of the active shaft 600 which is connected with the second wire guide wheel 7 is provided with a baffle; a positioning core column which is coaxial with the active shaft 600 is arranged on the baffle; a pressing block 16 which is detachably connected with the end of the positioning core column is formed between the pressing block 16 and the baffle, and a clamping space in which the second wire guide wheel 7 is arranged is formed;

[0066] The driven shaft 400 is connected with the first wire wheel 5, and the first wire wheel 5 is also provided with a baffle; the baffle is provided with a positioning core column coaxial with the driven shaft 400; the end of the positioning core column is detachably connected with a pressing block 16, and a clamping space for mounting the first wire wheel 5 is formed between the pressing block 16 and the baffle.

[0067] When replacement or maintenance is required, the pressing block 16 can be disassembled.

[0068] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0070] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A wire feeding mechanism of a computer spring machine, characterized by, It includes: Box (1), which is provided with a plurality of guide rail mechanisms (2) which are distributed along a straight line; the installation space is formed between the adjacent two guide rail mechanisms (2); the guide rail mechanism (2) is provided with a guide groove (3) which is parallel to the straight line; Driven wire feeding mechanism (4) connected with the box (1), and it has a first wire wheel (5); Active wire feeding mechanism (6) connected with the box (1), and it has a second wire wheel (7); the second wire wheel (7) and the first wire wheel (5) are symmetrically arranged with the straight line as the axis of symmetry; the second wire wheel (7) and the first wire wheel (5) are tangent, and the tangent part is located in the installation space, and the tangent point is located on the straight line; the guide rail mechanism (2) includes a mounting seat (201) connected with the outer surface of the box (1); the mounting seat (201) is provided with a connecting plane on the side away from the box (1); the connecting plane is provided with a guide rail connecting groove, and the linear guide rail (200) is connected in the guide rail connecting groove; the linear guide rail (200) is provided with the guide groove (3) extending along the length direction thereof; The linear guide rail (200) is provided with a pressing plate (202) on one side provided with the guide groove (3); the pressing plate (202) is provided with a supporting lug (203) connected with the connecting plane of the mounting seat (201); the linear guide rail (200) includes two oppositely arranged mounting planes, one of which is close to the box (1); one guide groove (3) is arranged on each mounting plane; The mounting plane away from the box (1) is provided with the pressing plate (202); In the adjacent two guide rail mechanisms (2), the top surface of the opposite end of the two linear guide rails (200) is provided with a first arc-shaped avoiding groove (204) matched with the first wire wheel (5); the bottom surface of the opposite end of the two linear guide rails (200) is provided with a second arc-shaped avoiding groove (205) matched with the second wire wheel (7); In the plurality of guide rail mechanisms (2), the mounting seat (201) of the guide rail mechanism (2) located at one end of the straight line is provided with a wire outlet direction indicating block (17).

2. The wire feeding mechanism of the computer spring machine according to claim 1, wherein: The wire feeding mechanism of the computer spring machine further comprises a driving shaft (8) penetrating the box (1), a first gear (9) connected to the driving shaft (8), and a driving motor (18) connected to the outer side of the box (1) at one end of the driving shaft (8); The box (1) is provided with a transmission shaft (10); the transmission shaft (10) is provided with a second gear (11) and a third gear (12); the second gear (11) is engaged with the first gear (9); the third gear (12) is in transmission connection with the active wire feeding mechanism (6); the active wire feeding mechanism (6) is in transmission connection with the driven wire feeding mechanism (4).

3. The wire feeding mechanism of the computer spring machine according to claim 2, wherein: The active wire feeding mechanism (6) comprises two active shafts (600) arranged side by side in the box (1), one end of the active shaft (600) is rotatably connected to the side of the box (1), and the other end is connected to the second wire guide wheel (7) through the side of the box (1); the fourth gear (601) is arranged on the active shaft (600); the third gear (12) is located between the two fourth gears (601) and meshes with the two fourth gears (601); The driven wire feeding mechanism (4) comprises two driven shafts (400) arranged side by side in the box (1), one end of the driven shaft (400) is rotatably connected to the side of the box (1), and the other end is connected to the first wire guide wheel (5) through the side of the box (1); the fifth gear (401) meshes with the fourth gear (601) is arranged on the driven shaft (400).

4. The wire feeding mechanism of the computer spring machine according to claim 3, wherein: A plurality of vertical avoiding grooves (13) are arranged on the side of the first wire guide wheel (5) of the box (1); a square shaft seat (14) is arranged on each driven shaft (400) and located in the vertical avoiding groove (13); The top of the box (1) is provided with a compression force adjusting mechanism (15); the abutting end of the compression force adjusting mechanism (15) extends into the vertical avoiding groove (13) and abuts against the top of the square shaft seat (14).

5. The wire feeding mechanism of the computer spring machine according to claim 4, wherein: The top of the box (1) is provided with a vertical screw hole; The compression force adjusting mechanism (15) comprises a spring (1500), the bottom of the spring (1500) is connected with a first top block (1501), and the top of the spring (1500) is connected with a second top block (1502); the spring (1500) is located in the vertical screw hole, and the second top block (1502) is threadedly connected with the vertical screw hole.

6. The wire feeding mechanism of the computer spring machine according to claim 3, wherein: One end of the active shaft (600) connected with the second wire guide wheel (7) is provided with a baffle; a positioning core column coaxial with the active shaft (600) is arranged on the baffle; a pressing block (16) is detachably connected to the end of the positioning core column, and a clamping space for mounting the second wire guide wheel (7) is formed between the pressing block (16) and the baffle; The driven shaft (400) connected with the first wire guide wheel (5) is also provided with a baffle; a positioning core column coaxial with the driven shaft (400) is arranged on the baffle; a pressing block (16) is detachably connected to the end of the positioning core column, and a clamping space for mounting the first wire guide wheel (5) is formed between the pressing block (16) and the baffle.

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