CN111063322B - Piano climbing belt manufacturing equipment and manufacturing method - Google Patents

Abstract

The invention discloses a manufacturing device of a piano climbing belt, which comprises: the head sticking machine comprises a driving device, a winding wheel connected with the driving device, a rope guiding mechanism connected with the driving device and a plurality of head sticking molds circumferentially arranged on the winding wheel, wherein each head sticking mold is provided with a positioning groove and a plurality of rope grooves communicated with the positioning groove and arranged along the length direction of the head sticking mold, the positioning groove is configured to position leather strips for manufacturing the heads of the climbing belts, the rope grooves are configured to position ropes for manufacturing the ropes of the climbing belts, and the driving device is used for driving the winding wheel to rotate and enabling the ropes to be wound on the leather strips along the rope grooves under the action of the rope guiding mechanism and the winding wheel to form blanks with a plurality of blank units; the head punching machine comprises a punching die, wherein the punching die is provided with a punching structure matched with the shape of the head of the climbing belt so as to punch and strip each blank unit to form a plurality of climbing belts. The climbing belt manufactured by the method has high quality, stable quality and low labor cost, and can be produced in batches.

Description

Piano climbing belt manufacturing equipment and manufacturing method

Technical Field

The invention relates to the field of instrument manufacturing, in particular to a manufacturing device and a manufacturing method of a piano bridle.

Background

The climbing belt is a part of a piano and generally comprises a climbing belt head and a climbing belt rope connected with the climbing belt head, wherein the climbing belt head is provided with climbing belt holes which are through holes and can be hung on a climbing belt hook. The hammer can be driven to return through the climbing belt, and the quick continuous striking speed of the hammer is ensured. The bridle wire is typically bonded to the bridle head by means of adhesive.

The existing climbing belt bonding mode is purely manual, a climbing belt head is supplied by a material supplier, a climbing belt rope is cut into a standard length, and white glue is coated on the climbing belt head by workers during bonding. Because the whole head of the climbing belt is glued during gluing, the climbing belt holes can be blocked by glue, and the subsequent assembly is affected. In order to prevent the situation, after the glue is naturally dried, a long stainless steel needle is used for puncturing the climbing belt hole of the climbing belt head once again so as to ensure the smoothness of the climbing belt hole.

The manufacturing process is purely manual, so that the manufacturing quality of each worker is different, and the problems of uneven gluing, unstable adhesion, different adhesion positions of the climbing rope, different puncture sizes, asymmetric climbing rope, rope head scattering and the like exist. The quality inspection workload of the workpiece is large, the material loss is large, and the assembly quality of the piano is affected by the manufacturing mode and the quality problem of the workpiece. The manual operation can only be carried out in a single distribution way, so that a large number of places and hands are occupied, batch production cannot be formed, and the operation cost of enterprises is increased.

Disclosure of Invention

The invention aims at overcoming the defects of the prior art, thereby providing the equipment for manufacturing the piano climbing belt, which has the advantages of high quality, stable quality, low labor cost and mass production.

Another object of the present invention is to provide a method of making a piano bridle strap.

Aiming at the purposes, the invention adopts the following technical scheme:

A piano bridle strap making apparatus comprising:

The head sticking machine comprises a driving device, a winding wheel connected with the driving device, a rope guiding mechanism connected with the driving device and a plurality of head sticking molds circumferentially arranged on the winding wheel, wherein the head sticking molds are provided with positioning grooves and a plurality of rope grooves which are communicated with the positioning grooves and are arranged along the length direction of the positioning grooves, the positioning grooves are used for positioning leather strips for manufacturing the head sticking, the rope grooves are used for positioning ropes for manufacturing the head sticking ropes, and the driving device is used for driving the winding wheel to rotate and enabling the ropes to be wound on the leather strips along the rope grooves under the action of the rope guiding mechanism and the winding wheel to form blanks with a plurality of blank units;

the head punching machine comprises a punching die, wherein the punching die is provided with a punching structure matched with the shape of the head of the climbing belt so as to punch and strip each blank unit to form a plurality of climbing belts.

As an optimized technical scheme, the driving device comprises a power source and an output shaft driven by the power source, and the output shaft is connected with the winding wheel to drive the winding wheel to rotate.

As the preferable technical scheme, the rope guiding mechanism comprises a screw rod driven by the output shaft and a rope guiding structure driven by the screw rod to axially move, wherein the screw rod comprises a screw rod and a nut in threaded connection with the screw rod, and the rope guiding structure is arranged on the nut.

As an optimal technical scheme, the rope guiding structure is provided with a limiting opening for the rope to pass through and to be limited, so that the rope is driven to synchronously move when the rope guiding structure moves.

As an optimized technical scheme, the output shaft is coaxially fixed with a first synchronous wheel, the screw is coaxially fixed with a second synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected through a synchronous belt.

As the preferable technical scheme, both sides of the length direction of the positioning groove are respectively provided with a limiting convex part for limiting both ends of the leather strip.

As a preferred technical solution, the rope grooves form a spiral path to enable the rope to be spirally wound.

As a preferable technical scheme, the rope groove penetrates through the sticky climbing belt head die along the rope path direction.

As an optimal technical scheme, a plurality of positioning blocks are respectively arranged on two sides of the width direction of the positioning groove, and the rope groove is formed between the positioning blocks.

In order to achieve the above purpose, the present invention further adopts the following technical scheme:

a manufacturing method of a piano bridle strap comprises the following steps:

providing the manufacturing equipment;

fixing the leather strips in the positioning grooves, and coating adhesive on the upper surfaces of the leather strips;

the driving device drives the winding wheel to rotate, and the rope is wound on the leather strip along the rope groove under the action of the rope guiding mechanism and the winding wheel to form a blank with a plurality of blank units;

cutting the blank into a plurality of blank units;

And stamping and slitting each blank unit through a head climbing machine to form a plurality of climbing belts.

Compared with the prior art, the invention has the beneficial effects that:

(1) The manufacturing equipment is used for processing, so that the number of workers required is greatly reduced, the labor intensity of the workers is reduced, the labor cost is saved, and the production efficiency of the climbing belt is improved.

(2) The original climbing belt is sent to individuals for completion, and the quality is uneven. The climbing belt is processed by manufacturing equipment, and has stable quality and high quality.

(3) The original climbing belt is sent to an individual for completion, and the delivery time is difficult to guarantee. The production equipment is used for processing, and the supply time is ensured by special workers.

Drawings

FIG. 1 is a perspective view of a head-sticking machine according to an embodiment of the present invention;

FIG. 2 is another perspective view of an alternate angle of the head taping machine of an embodiment of the present invention;

FIG. 3 is a front view of a bridle strap head machine according to an embodiment of the present invention;

FIG. 4 is a side view of a bridle strap head machine according to an embodiment of the present invention;

FIG. 5 is a schematic view showing a structure of a head mold for a tape tab according to an embodiment of the present invention;

FIG. 6 is a schematic view of a strap and rope positioning adhesive tab die according to an embodiment of the invention;

Fig. 7 is a schematic structural view of an upper die of a stamping die of a head punching machine according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a lower die of a stamping die of a head punching machine according to an embodiment of the present invention;

FIG. 9 is a schematic view of the structure of a blank unit according to an embodiment of the invention;

fig. 10 is a schematic view of the outer profile arrangement of a bridle strap head to be punched out of a strip in a blank unit according to an embodiment of the invention;

Fig. 11 is a schematic view of a plurality of bridles formed after stamping and slitting of a blank unit according to an embodiment of the invention.

Reference numerals:

100. Head sticking machine

1. Rack

2. Driving device

21. Hand wheel

22. Output shaft

23. Main shaft

24. Commutator device

25. First synchronous wheel

26. Second synchronizing wheel

27. Synchronous belt

3. Coiling wheel

31. Mounting station

4. Rope guiding mechanism

41. Screw rod

42. Nut

43. Rope guiding structure

431. Limiting opening

5. Adhesive climbing belt head mould

51. Positioning groove

52. Rope groove

53. Limiting convex part

54. Positioning block

6. Climbing belt

61. Climbing belt head

62. Climbing rope

7. Leather strip

8. Blank unit

9. Upper pressing die

10. Lower pressing die

11. Rope

Detailed Description

For a better understanding of the invention with objects, structures, features, and effects, the invention will be described further with reference to the drawings and to the detailed description. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale. Furthermore, the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "front", "rear", etc. are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

As shown in fig. 1, a piano bridle strap making apparatus according to an embodiment of the present invention includes a bridle strap machine 100 and a bridle strap machine (not shown).

As shown in fig. 1 to 4, the sticky climbing head machine 100 includes a frame 1, a driving device 2 provided on the frame 1, a winding wheel 3 connected to the driving device 2, a rope guide mechanism 4 connected to the driving device 2, and a plurality of sticky climbing head molds 5 circumferentially provided on the winding wheel 3. In this embodiment, there are 18 molds 5, and in other embodiments, the number of molds 5 may be reduced or increased according to the processing speed of different operators. For example, the number of the pieces can be reduced to 6 or 12 pieces, or the number can be increased to 24 pieces. The adhesive climbing belt head mould 5 is fixed on the winding wheel 3 and can move along with the winding wheel 3. The winding reel 3 has a mounting station 31 for mounting the sticky climbing head die 5, the mounting station 31 being adapted to the number of sticky climbing head dies 5.

As shown in fig. 5 and 6, the adhesive climbing-head die 5 is provided with a positioning groove 51 and a plurality of rope grooves 52 that communicate with the positioning groove 51 and are provided along the length direction thereof, the positioning groove 51 is configured to position the leather strap 7 for making the climbing-head 61, and the rope grooves 52 are configured to position the rope 11 for making the climbing-belt rope 62. The leather strip 7 has a predetermined size to be adapted to the size of the positioning groove 51 so as to be positioned. Through the design glues and climbs tape head mould 5, leather strap 7 can firmly put in the constant head tank 51 of mould, and rope 11 also can be spacing in the preset position through rope groove 52, and the location is accurate, and centering bonding precision is high. The strips 7 may be secured in the positioning slots 51 by suitable means, such as by using reusable glue, such as pressure sensitive adhesives, which are readily available on the market. When the strips 7 are removed, the further strips 7 can be secured again by gluing.

In the conventional manufacturing method, the shape of the bridle 61 is prefabricated. However, in this embodiment, in order to solve the problem of slow and uneven glue application, the whole leather strip 7 capable of forming a plurality of climbing belt heads 61 is glued and then bonded with the rope 11, and the glue used may be white latex, so that the glue on the bonding surface can be ensured to be uniform. I.e. the lower surface of the leather strap 7 is fixed in the positioning groove 51 by glue, and the upper surface of the leather strap 7 is coated with glue for bonding the rope 11.

The size and shape of the leather strip 7 can be selected according to practical situations, and in this embodiment, the leather strip 7 is rectangular, and has a length of 150mm and a width of 21.5mm. One leather strap 7 with the above dimensions can cut out 15 bridle heads 61 on the premise of ensuring the external dimensions of the bridle heads 61. Preferably, the leather strip 7 is made of sheepskin. The rope groove 52 is communicated with the positioning groove 51, so that the rope 11 positioned by the rope groove 52 can be contacted with the leather strap 7.

In this embodiment, two sides of the positioning slot 51 in the length direction are respectively provided with a limiting protrusion 53 for limiting two ends of the leather strip 7. A plurality of positioning blocks 54 are respectively arranged on two sides of the positioning groove 51 in the width direction, and rope grooves 52 are formed between the positioning blocks 54. That is, the limit protrusion 53 and the positioning block 54 basically define the size of the positioning groove 51, and the movement of the leather strip 7 in the positioning groove 51 can be prevented by the limit protrusion 53 and the positioning block 54, so that the leather strip can be accurately positioned.

As shown in fig. 1 to 4, the driving device 2 is used for driving the winding wheel 3 to rotate and winding the rope 11 on the leather strap 7 along the rope groove 52 under the action of the rope guiding mechanism 4 and the winding wheel 3 to form a blank with a plurality of blank units 8. Since the leather strip 7 is coated with glue, the rope 11 is simultaneously adhered to the leather strip 7 when being wound on the leather strip 7. The number of blank units 8 corresponds to the number of adhesive tab head dies 5, i.e. in this embodiment the blank has 18 blank units 8.

Since the rope grooves 52 are provided along the length direction of the positioning grooves 51, the ropes 11 are also distributed along the length direction of the leather strips 7 after the winding is completed. Each of the blank units 8 may be cut out (i.e., the string 11 cut) by a suitable cutting tool (e.g., scissors, a die cutting device, or a suitable die), and each blank unit 8 may then be press formed by a bridle machine.

The prior art bridle 62 is pre-cut and is also manually glued and then trimmed, which is quite inconvenient to handle. In this embodiment, the rope 11 is not cut in the whole winding process, and the rope 11 needs to be cut once after the whole winding is completed, and then the rope 11 is cut by the cutting tool so that the rope 11 has a predetermined length, thereby not only solving the problem that the rope tail needs to be collected when the climbing rope 62 is manually stuck, but also making the length of the climbing rope 62 uniform.

As shown in fig. 7 to 11, the head punch comprises a punch die provided with a punch structure adapted to the shape of the head 61 to punch and strip each of the blank units 8 to form a plurality of bridles 6, i.e. each of the blank units 8 can form a plurality of bridles 6. Wherein the holes of the climbing belts 6 in the climbing belts 6 are also formed by stamping. The stamping die comprises an upper die 9 and a lower die 10.

As shown in fig. 1 to 4, the driving device 2 includes a power source and an output shaft 22 driven by the power source, and the output shaft 22 is connected to the reel 3 to drive the reel 3 to rotate. The power source may be manual or electric, for example, in this embodiment, the power source is a hand wheel 21, and the rotation of the reel 3 is achieved by manually shaking the hand wheel 21. In other embodiments, a motor may be used instead of manual rotation in order to reduce worker effort. The output shaft 22 may be directly connected to the driving device 2 or may be indirectly connected to the driving device 2. In this embodiment, in order to effectively use space and facilitate the operation of a worker, the hand wheel 21 is directly connected to the main shaft 23, and the main shaft 23 is connected to the output shaft 22 through the commutator 24, that is, an angle of 90 ° is formed between the main shaft 23 and the output shaft 22. According to practical situations, the commutator 24 may be a speed-reducing commutator 24, and speed-reducing is performed at the same time of the commutation.

The rope guiding mechanism 4 comprises a screw rod driven by the output shaft 22 and a rope guiding structure 43 driven by the screw rod to axially move, the screw rod comprises a screw rod 41 and a nut 42 in threaded connection with the screw rod 41, and the rope guiding structure 43 is arranged on the nut 42. The axial movement here refers to the axial direction along the reel 3.

The rope guide 43 serves to guide the direction in which the rope 11 is threaded. The rope guiding structure 43 is provided with a limiting opening 431 for the rope 11 to pass through and to be limited, so that the rope 11 is driven to synchronously move when the rope guiding structure 43 moves.

In this embodiment, the output shaft 22 is coaxially fixed with a first synchronizing wheel 25, the screw 41 is coaxially fixed with a second synchronizing wheel 26, and the first synchronizing wheel 25 and the second synchronizing wheel 26 are connected by a timing belt 27. In other embodiments, the transmission can be performed by means of gears and racks.

During the winding process of the rope 11, a worker shakes the hand wheel 21 to enable the main shaft 23 to rotate, and under the action of the reverser 24, power is transmitted to the output shaft 22 to drive the output shaft 22 to rotate, so that the winding wheel 3 is driven to rotate. The output shaft 22 drives the winding wheel 3 to rotate, and simultaneously, the first synchronous wheel 25 coaxially rotates, and drives the second synchronous wheel 26 to rotate through the synchronous belt 27, so that the screw 41 is driven to rotate, the nut 42 is further driven to axially move, and finally, the rope guiding structure 43 is driven to axially move. The winding wheel 3 pulls the rope 11 to perform circumferential rotation, and the rope guiding structure 43 enables the rope 11 to axially move, namely, the rope 11 axially moves while performing circumferential rotation, so as to form spiral movement. Correspondingly, the rope grooves 52 form a spiral path to allow the rope 11 to be spirally wound. Meanwhile, for smooth winding, the rope groove 52 penetrates the sticky climbing die 5 along the path direction of the rope 11.

The invention also provides a manufacturing method of the piano bridle 6, which comprises the following steps:

providing the manufacturing equipment;

the positioning groove 51 is coated with reusable glue, the leather strip 7 is fixed in the positioning groove 51, the upper surface of the leather strip 7 is coated with adhesive glue, such as white latex, and the leather strip 7 can be glued before fixation or after fixation;

The driving device 2 drives the winding wheel 3 to rotate, and the rope 11 is wound on the leather strip 7 along the rope groove 52 under the action of the rope guiding mechanism 4 and the winding wheel 3 to form a blank with a plurality of blank units 8;

cutting the blank into a plurality of blank units 8;

Each blank unit 8 is punched and striped to form a plurality of bridles 6 by a bridle machine 100.

The above detailed description is merely illustrative of the preferred embodiments of the invention and is not intended to limit the scope of the invention, so that all equivalent technical changes that can be made by the present specification and illustrations are included in the scope of the invention.

Claims (10)

1. A piano bridle strap making apparatus, comprising:

The head sticking machine comprises a driving device, a winding wheel connected with the driving device, a rope guiding mechanism connected with the driving device and a plurality of head sticking molds circumferentially arranged on the winding wheel, wherein the head sticking molds are provided with positioning grooves and a plurality of rope grooves which are communicated with the positioning grooves and are arranged along the length direction of the positioning grooves, the positioning grooves are used for positioning leather strips for manufacturing the head sticking, the rope grooves are used for positioning ropes for manufacturing the head sticking ropes, and the driving device is used for driving the winding wheel to rotate and enabling the ropes to be wound on the leather strips along the rope grooves under the action of the rope guiding mechanism and the winding wheel to form blanks with a plurality of blank units;

the head punching machine comprises a punching die, wherein the punching die is provided with a punching structure matched with the shape of the head of the climbing belt so as to punch and strip each blank unit to form a plurality of climbing belts.

2. The apparatus for making a piano bridle according to claim 1, wherein: the driving device comprises a power source and an output shaft driven by the power source, and the output shaft is connected with the winding wheel to drive the winding wheel to rotate.

3. The apparatus for making a piano bridle according to claim 2, wherein: the guide rope mechanism comprises a screw rod driven by the output shaft and a guide rope structure driven by the screw rod to axially move, the screw rod comprises a screw rod and a nut in threaded connection with the screw rod, and the guide rope structure is arranged on the nut.

4. The apparatus for making a piano bridle according to claim 3, wherein: the rope guiding structure is provided with a limiting opening for the rope to pass through and to be limited, so that the rope is driven to synchronously move when the rope guiding structure moves.

5. The apparatus for making a piano bridle according to claim 3, wherein: the output shaft is coaxially fixed with a first synchronous wheel, the screw is coaxially fixed with a second synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected through a synchronous belt.

6. The apparatus for making a piano bridle according to claim 1, wherein: and the two sides of the length direction of the positioning groove are respectively provided with a limiting convex part for limiting the two ends of the leather strip.

7. The apparatus for making a piano bridle according to claim 1, wherein: the rope grooves form a spiral path to enable the rope to be spirally wound.

8. The apparatus for making a piano bridle according to claim 7, wherein: the rope groove penetrates through the sticky climbing belt head die along the rope path direction.

9. The apparatus for making a piano bridle according to claim 1, wherein: a plurality of positioning blocks are respectively arranged on two sides of the width direction of the positioning groove, and the rope grooves are formed between the positioning blocks.

10. The manufacturing method of the piano bridle belt is characterized by comprising the following steps of:

Providing a production apparatus according to any one of claims 1 to 9;

fixing the leather strips in the positioning grooves, and coating adhesive on the upper surfaces of the leather strips;

the driving device drives the winding wheel to rotate, and the rope is wound on the leather strip along the rope groove under the action of the rope guiding mechanism and the winding wheel to form a blank with a plurality of blank units;

cutting the blank into a plurality of blank units;

And stamping and slitting each blank unit through a head climbing machine to form a plurality of climbing belts.