CN215699511U - Automatic hammer head pin inserting machine - Google Patents

Abstract

The utility model discloses an automatic hammer head pin inserting machine, which comprises a base, a linear driving mechanism and a pin inserting mechanism, wherein the linear driving mechanism is arranged on the base; the linear driving mechanism is mounted on the base to drive the hammers to move in the front-rear direction; the pin inserting mechanism comprises a multi-shaft driving mechanism installed on the base and a pin inserter installed at the tail end of the multi-shaft driving mechanism, and the multi-shaft driving mechanism drives the pin inserter to insert pins towards the hammers. Replace artifical felt to the hammer head to carry out the pin inserting operation through automatic hammer head pin inserting machine, be favorable to alleviateing workman intensity of labour, can guarantee the uniformity of pin inserting dynamics simultaneously, guarantee processingquality.

Description

Automatic hammer head pin inserting machine

Technical Field

The utility model relates to the technical field of pianos, in particular to an automatic hammer head pin inserting machine.

Background

The hammer is an important part of the piano, the piano sound is generated, strings are knocked by the hammer to vibrate the strings, vibration energy is transmitted to a soundboard playing a resonance effect through string codes, and the vibration of the soundboard generates density waves in the air to generate the sound of the piano heard by people. In the production process of the piano, pin insertion treatment needs to be carried out on two sides of the hammer felt, so that the felt is fluffy, and the effects of reducing the hardness of the hammer felt and increasing the tone saturation when the hammer strikes a string are achieved. The existing pin inserting mode is manual operation, and a pin inserting device is held by hands to be inserted into a hole on the surface of a felt. The operation mode has the defects of high labor intensity and high labor cost, and meanwhile, the working quality of the number, the position and the depth of the pin inserting in the pin inserting process is difficult to guarantee, the mutual inspection is completely realized by depending on the quality consciousness of workers, and the processing quality is difficult to guarantee.

Therefore, there is a need for an improvement of the existing processing method.

SUMMERY OF THE UTILITY MODEL

The utility model is primarily intended to overcome the above-mentioned disadvantages of the prior art, and to provide an automatic hammer head pin inserting machine, which is advantageous to reduce the labor intensity of workers and improve the processing quality of hammer heads.

In order to achieve the above purpose, the utility model provides the following technical scheme:

an automatic hammer head pin inserting machine comprises a base, a linear driving mechanism and a pin inserting mechanism; the linear driving mechanism is mounted on the base to drive the hammers to move in the front-rear direction; the pin inserting mechanism comprises a multi-shaft driving mechanism installed on the base and a pin inserter installed at the tail end of the multi-shaft driving mechanism, and the multi-shaft driving mechanism drives the pin inserter to insert pins towards the hammers.

As a preferable scheme, the linear driving mechanism comprises a mounting seat, a linear sliding rail, a clamping device and a linear driving device; the mounting seat is fixed on the base; the linear sliding rail is arranged on the mounting seat; the clamping device is slidably mounted on the linear slide rail and is used for clamping the hammer heads; the linear driving device drives the clamping device to move along the linear sliding rail.

As a preferred scheme, the clamping device comprises a fixing plate, a clamp and a pneumatic clamping jaw; the fixing plate is movably arranged on the linear slide rail and is connected with the linear driving device; the clamp comprises a clamp bottom plate and a pair of clamp side plates, the clamp bottom plate comprises a flat plate part arranged on the fixing plate and a convex strip protruding upwards from the flat plate part, and the convex strip is used for supporting the lower end of the hammer; the two clamp side plates are erected on the flat plate part and are respectively positioned on two opposite sides of the convex strip to clamp the hammer heads; the pneumatic clamping jaw is arranged on the fixing plate and used for clamping the clamp side plate.

As a preferable scheme, the clamping device further comprises at least one group of side limiting blocks installed on the fixing plate, each group of side limiting blocks comprises two side limiting blocks which are distributed in bilateral symmetry, and each side limiting block is located on the outer side corresponding to the clamp side plate.

Preferably, the clamping device further comprises a baffle plate mounted at the front end of the clamp.

As a preferred scheme, the multi-shaft driving mechanism comprises a transverse driving device, a vertical driving device, an angle adjusting device and a pin driving device which are sequentially connected; the transverse driving device is arranged on the base and drives the vertical driving device to transversely move; the vertical driving device drives the angle adjusting device to lift; the angle adjusting device is arranged on one side of the vertical driving device and used for adjusting the inclination angle of the contact pin driving device relative to the horizontal plane; the pin driving device is installed on one side of the angle adjusting device and is connected with the pin inserting device in a driving mode.

As a preferred scheme, the angle adjusting device comprises a mounting plate, a lifting driving device, a lifting connecting piece, a pivot shaft and a swinging block; the mounting plate is mounted on the vertical driving device; the lifting driving device is arranged on the fixing plate and drives the lifting connecting piece to move up and down; the pivot shaft is arranged on the mounting plate and is positioned on one side of the lifting connecting piece close to the linear driving mechanism; one end of the connecting plate is hinged to the pivot shaft, the other end of the connecting plate is movably connected with the lifting connecting piece, and one side, far away from the fixing plate, of the connecting plate is fixed with the contact pin driving device.

Preferably, the linear driving mechanism comprises a pair of pin mechanisms, and two pin mechanisms are distributed on two opposite sides of the linear driving mechanism.

As a preferred scheme, a plurality of needle heads are arranged on the needle inserter, and the plurality of needle heads are distributed on the lower end face of the needle inserter in a multi-row staggered manner.

Preferably, the staggered distance of the needles in two adjacent rows is half of the central line distance of two adjacent needles in the same row.

Compared with the prior art, the utility model has the following beneficial effects:

1. the automatic hammer head pin inserting mechanism provided by the utility model replaces manual work to insert pins on the felt of the hammer head through the pin inserting mechanism, is beneficial to reducing the labor intensity of workers, and can ensure the uniformity of pin inserting force and ensure the processing quality.

2. The linear driving mechanism is used for clamping and driving the hammer heads to move back and forth, so that a plurality of hammer heads can be processed at one time, and the processing efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a perspective view of a hammer pin inserting mechanism in the present invention;

FIG. 2 is a front view of the hammer pin inserting mechanism of the present invention;

FIG. 3 is a side view of the linear drive mechanism of the present invention;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a perspective view of a clamping device of the present invention;

FIG. 6 is a perspective view of the hammer pin inserting mechanism of the present invention;

FIG. 7 is a front view of the hammer pin inserting mechanism of the present invention;

FIG. 8 is a cross-sectional view taken along B-B of FIG. 7;

FIG. 9 is a schematic view of the arrangement of needles on the inserter instrument according to the present invention;

in the figure:

1. a base; 2. a linear drive mechanism; 21. a mounting seat; 22. a linear slide rail; 23. a clamping device; 231. a clamp; 2311. a clamp base plate and; 2312. a clamp side plate; 232. a pneumatic clamping jaw; 2321. parallel clamping fingers; 233. a side limiting block; 234. a baffle plate; 235. a fixing plate; 24. a linear drive device; 241. a first servo motor; 242. a first lead screw; 243. a first lead screw nut; 244. a connecting member; 25. a guard plate; 3. a pin inserting mechanism; 31. a lateral drive device; 32. a vertical driving device; 33. an angle adjusting device; 331. mounting a plate; 332. a second servo motor; 333. a second lead screw; 334. a lifting connecting piece; 3341. a strip hole; 335. a pivot shaft; 336. a swing block; 337. rotating the positioning column; 338. a sliding bearing; 339. a second feed screw nut; 34. a pin driving device; 35. a needle inserter; 341. a mounting seat; 342. a fixed block; 343. a cylinder; 351. a needle head; 36. a support frame; 100. hammers.

Detailed Description

For a better understanding of the objects, structure, features, and functions of the utility model, reference should be made to the drawings and detailed description that follow. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale. Moreover, the described embodiments are a few embodiments of the utility model, rather than all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "front", "rear", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Examples

Referring to fig. 1-2, the present invention provides an automatic hammer pin inserting machine for inserting pins of felt of hammers 100. The automated hammer pin inserting machine includes a base 1, a linear driving mechanism 2, and a pin inserting mechanism 3. Wherein the linear driving mechanism 2 is mounted on the base 1 to drive the hammers 100 to move in the front-rear direction; the pin inserting mechanism 3 includes a multi-axis driving mechanism mounted on the base 1 and a pin inserter 35 mounted at the end of the multi-axis driving mechanism, the multi-axis driving mechanism driving the pin inserter 35 toward hammer pins. In the present embodiment, two pin mechanisms 3 are provided, and are respectively installed on two opposite sides of the linear driving mechanism 2. Two contact pin mechanisms 3 go on in step, do benefit to and promote the improvement machining efficiency. In other embodiments, a single pin mechanism may be provided.

As shown in fig. 1 and 3, the linear driving mechanism 2 includes a mounting base 21, a linear slide 22, a clamping device 23, and a linear driving device 24; the mounting seat 21 is fixed on the base 1; the linear slide rail 22 is arranged on the mounting seat 21; the holding device 23 is slidably mounted on the linear slide rail 22 for holding hammers; the linear driving device 24 drives the gripping device 23 to move along the linear slide 22.

As shown in fig. 4 and 5, the clamping device 23 includes a fixing plate 235, a clamp 231, and a pneumatic jaw 232. Specifically, the fixing plate 235 is movably mounted on the linear slide 22 and connected to the linear driving device 24; the jig 231 is in the form of a longitudinally extending strip, and a pair of hammers 100 can be placed at a time, improving the processing efficiency. The jig 231 includes a jig base plate 2311 and a pair of jig side plates 2312, the cross section of the jig base plate 2311 is of an inverted T shape, and it includes a flat plate portion mounted on the fixing plate 235 and a protruding strip protruding upward from the flat plate portion, the top of the protruding strip is used for supporting the lower end of the hammer; the two clamp side plates 2312 are erected on the flat plate part and are respectively positioned on two opposite sides of the raised line, the top of the clamp side plates 2312 is higher than the raised line, and the two clamp side plates 2312 and the raised line are surrounded to form an accommodating groove for placing a hammer; the pneumatic clamping jaw 232 is mounted on the fixing plate 235, and includes a main body mounted on the lower side of the fixing plate and two parallel clamping fingers 2321 upwardly penetrating through the bottom plate, the two parallel clamping fingers 2321 being respectively located at the outer sides of the corresponding clamp side plates 2312. In a normal state, the distance between the two clamp side plates 2312 is large, and hammers can be taken and placed; when the actuation jaw is actuated, the parallel clamp fingers 2321 clamp the clamp side plates 2312 inward, and the interval between the two clamp side plates 2312 is narrowed to fix the positions of hammers. Be equipped with a plurality of pneumatic clamping jaws in this implementation, a plurality of pneumatic clamping jaws 232 are along preceding back direction interval distribution to even centre gripping anchor clamps curb plate 2312, hammer head 100 rocks when avoiding the contact pin operation, guarantees processingquality.

As shown in fig. 3 and 5, the clamping device 23 further includes at least one set of side stoppers 233 mounted on the fixing plate 235, each set of side stoppers 233 includes two side stoppers 233 oppositely disposed left and right, and each side stopper 233 is located at an outer side of the corresponding clamp side plate 2312. In this embodiment, two sets of side stoppers 233 are provided, which are respectively provided at the front and rear ends of the holding device 23. Further, the holding device 23 further includes a stopper 234 installed at the front end of the clamp 231 to prevent the hammer from falling.

As shown in fig. 3 to 4, the linear driving device 24 includes a first servo motor 241, a first lead screw 242, and a first lead screw nut 243; the first servo motor 241 is installed at the lower side of the base plate, and the rotation shaft thereof is fixed to one end of the first lead screw 242, and the first lead screw nut 243 is threadedly coupled to the first lead screw 242 and fixed to the lower side of the fixing plate 235 by a coupling member 244. Of course, in other embodiments, the holding device 23 may be driven by a stepping motor or an air cylinder.

Further, as shown in fig. 3-4, guard plates 25 are installed on both sides of the linear driving mechanism 2, which is beneficial to the safety of the lifting device.

As shown in fig. 6, the multi-axis driving mechanism includes a transverse driving device 31, a vertical driving device 32, an angle adjusting device 33 and a pin driving device 34 connected in sequence; wherein, the transverse driving device 31 is arranged on the base 1 and drives the vertical driving device 32 to move transversely; the vertical driving device 32 is arranged on the transverse driving device 31 through a support frame 36 and drives the angle adjusting device 33 to ascend and descend; an angle adjusting device 33 is installed at one side of the vertical driving device 32 for adjusting the inclination angle of the pin driving device 34 with respect to the horizontal plane; the pin driving device 34 is arranged on one side of the angle adjusting device 33 and connected with the pin inserter 35; the pin driver 34 is drivingly connected to the pin keeper 35. In this embodiment, the transverse driving device 31 and the vertical driving device 32 are driven by servo motors, so that the moving speed and the position accuracy can be accurately controlled.

Referring to fig. 7-8, the angle adjusting device 33 includes a mounting plate 331, a lifting driving device, a lifting connecting member 334, a pivot shaft 335 and a swing block 336; the mounting plate 331 is mounted on the vertical driving device 12; the lifting driving device is arranged on the fixing plate 235 and drives the lifting connecting piece 334 to move up and down, one end of the lifting connecting piece 334 in the horizontal direction is provided with a long hole 3341 which is butted with the swinging block 336, and the length direction of the long hole 3341 is in the left-right direction; the pivot shaft 335 is arranged on the mounting plate 331 and is located on one side of the lifting connecting piece 334 close to the linear driving mechanism 2, and the center line thereof is arranged along the front-back direction; one end of the swing block 336 is rotatably connected with the pivot shaft 335, the other end is provided with a rotating positioning column 337, the rotating positioning column 337 is sleeved with a sliding bearing 338, and the sliding bearing 338 is slidably arranged on the elongated hole 3341. When the lifting driving member drives the lifting connecting member 334 to move up and down, the swinging block 336 swings around the pivot shaft 335, so as to adjust the inclination angle of the needle inserter 35, and realize that the needle inserter 35 moves along the peripheral surface of the hammer felt.

The lifting driving device in the embodiment is driven by a pull rod. Specifically, the lifting driving device comprises a second servo motor 332 arranged at the top of the mounting plate 331, a second lead screw 333 connected with the second servo motor 332, and a second lead screw nut 339 in threaded connection with the second lead screw 333, the second lead screw 333 is arranged along the vertical direction, and the second lead screw nut 339 is fixed with the lifting connecting piece 334. When the lifting driving device is started, the second servo motor 332 drives the second screw rod 333 to rotate, and drives the lifting connecting piece 334 to move up and down along the second screw rod, so as to drive the swinging block 336 to rotate around the pivot shaft 335. Of course, in other embodiments, the angle adjusting device can be set to be a turntable structure, so as to directly output the rotating angle and improve the intuitiveness of the angle.

The pin driving device 34 includes a pin inserter mount 341, a cylinder 343, and a fixing block 342; the needle inserter 35 mounting seat 21 is fixed on one side of the swinging block 336 far away from the mounting plate 331, the fixed block 342 is slidably mounted on the needle inserter mounting seat 341 and fixed with the needle inserter 35, and the air cylinder 343 is connected with the fixed block 342 through a piston rod so as to drive the needle inserter 35 to stretch and retract.

As shown in fig. 7 and 9, a plurality of needles 351 are disposed on the pin inserter 35, and the needles 351 are arranged in a plurality of rows and staggered on the lower end surface of the pin inserter 35. In this embodiment, two rows of needles 351 are provided in one needle inserter 35, and the adjacent two rows of needles 351 are staggered by a distance which is half of the distance between the central lines of the two adjacent needles 351 in the same row of needles 351. So set up and can further promote machining efficiency, and can evenly cover the external surface of hammer when the hammer contact pin, guarantee processingquality.

The operation mode of the automatic hammer pin inserting machine is as follows:

1. placing an aligned pair of hammers 100 on the jig 231, actuating the pneumatic clamping jaws 232 to clamp the hammers 100;

2. inputting relevant parameters such as the number of pins of each hammer at the man-machine interface;

3. upon activation of the linear driving mechanism 2, the hammers are moved forward with the holding devices 23;

4. when the hammers are moved to the proper positions, the pin inserting mechanism 3 is actuated, and the pin inserting machine performs the pin inserting work at different positions of the hammer felt by the driving of the lateral driving means 31, the vertical driving means 32, the angle adjusting means 33 and the pin inserting driving means 34.

5. The pin inserting operation of one hammer head is completed, the linear driving mechanism 2 drives the hammer head to continue to advance, and the processing of the next hammer head is continued;

6. after the hammer heads are finished, the linear driving mechanism 2 drives the holding device 23 to return to the starting point;

7. after the pneumatic gripper 232 releases the parallel fingers 2321, the hammer 100 can be removed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An automatic hammer head pin inserting machine is characterized by comprising a base, a linear driving mechanism and a pin inserting mechanism; the linear driving mechanism is mounted on the base to drive the hammers to move in the front-rear direction; the pin inserting mechanism comprises a multi-shaft driving mechanism installed on the base and a pin inserter installed at the tail end of the multi-shaft driving mechanism, and the multi-shaft driving mechanism drives the pin inserter to insert pins towards the hammers.

2. The automated hammer pin inserting machine of claim 1, wherein the linear drive mechanism includes a mount, a linear slide, a clamping device and a linear drive device; the mounting seat is fixed on the base; the linear sliding rail is arranged on the mounting seat; the clamping device is slidably mounted on the linear slide rail and is used for clamping the hammer heads; the linear driving device drives the clamping device to move along the linear sliding rail.

3. The automated hammer pin inserting machine of claim 2, wherein the clamping device includes a fixing plate, a clamp and a pneumatic jaw; the fixing plate is movably arranged on the linear slide rail and is connected with the linear driving device; the clamp comprises a clamp bottom plate and a pair of clamp side plates, the clamp bottom plate comprises a flat plate part arranged on the fixing plate and a convex strip protruding upwards from the flat plate part, and the convex strip is used for supporting the lower end of the hammer; the two clamp side plates are erected on the flat plate part and are respectively positioned on two opposite sides of the convex strip to clamp the hammer heads; the pneumatic clamping jaw is arranged on the fixing plate and used for clamping the clamp side plate.

4. The automated hammer pin inserting machine according to claim 3, wherein said holding means further comprises at least one set of side stoppers mounted on said fixing plate, each set of said side stoppers comprising two of said side stoppers symmetrically disposed in left and right, each said side stopper being located at an outer side of a corresponding said clamp side plate.

5. An automated hammer pin inserting machine according to claim 3, wherein said holding means further includes a baffle plate mounted at a front end of said jig.

6. The automated hammer pin inserting machine according to claim 1, wherein the multi-axis driving mechanism includes a lateral driving device, a vertical driving device, an angle adjusting device and a pin driving device connected in sequence; the transverse driving device is arranged on the base and drives the vertical driving device to transversely move; the vertical driving device drives the angle adjusting device to lift; the angle adjusting device is arranged on one side of the vertical driving device and used for adjusting the inclination angle of the contact pin driving device relative to the horizontal plane; the pin driving device is installed on one side of the angle adjusting device and is connected with the pin inserting device in a driving mode.

7. An automated hammer pin inserting machine as claimed in claim 1, including a pair of pin inserting mechanisms, two of said pin inserting mechanisms being disposed on opposite sides of said linear drive mechanism.

8. The automated hammer pin inserting machine according to claim 1, wherein a plurality of needles are provided on said needle inserter, and said plurality of needles are arranged in a staggered arrangement in a plurality of rows on a lower end surface of said needle inserter.

9. The automated hammer pin inserting machine of claim 8, wherein adjacent rows of said pins are staggered by a distance which is one half of the centerline distance between two adjacent pins of the same row of pins.

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