CN107662720B

CN107662720B - Automatic packing machine for valve plates

Info

Publication number: CN107662720B
Application number: CN201711036472.2A
Authority: CN
Inventors: 赫英强; 刘吉; 刘亚萍
Original assignee: Suzhou Hit Zhongzhi Automation Technology Co ltd
Current assignee: Suzhou Hit Zhongzhi Automation Technology Co ltd
Priority date: 2017-10-30
Filing date: 2017-10-30
Publication date: 2023-05-23
Anticipated expiration: 2037-10-30
Also published as: CN107662720A

Abstract

The invention relates to an automatic valve plate packaging machine which comprises a frame, a table top, a support, a wire binding and unwinding mechanism, a material receiving mechanism, a positioning mechanism, a transferring mechanism for transferring laminated valve plates collected by the material receiving mechanism to the positioning mechanism, a wire feeding mechanism, a control mechanism for controlling the wire feeding length of the wire feeding mechanism, a shearing mechanism for shearing the wire binding under the requirement of meeting the wire feeding length, a knotting mechanism for binding two ends of the sheared wire binding, and a material receiving device, wherein the upper end and the lower end of the sheared wire binding respectively emit the top surface and the bottom surface of the laminated valve plates, and the knotting mechanism can automatically adjust the twisting tightness of the wire binding according to packaging requirements. The invention not only can automatically receive the valve plates processed by the bending machine, but also can automatically transfer the valve plates to a packing area according to the packing quantity requirement of the valve plates and automatically finish the work of wire feeding, wire shearing, wire binding and knotting, has high efficiency, and simultaneously has completely consistent knotting force, and can adjust the tightness of the wire binding according to the packing requirement.

Description

Automatic packing machine for valve plates

Technical Field

The invention belongs to the field of valve plate processing equipment, and particularly relates to an automatic valve plate packaging machine.

Background

At present, most valve plates are processed on a production line, the valve plates are manually taken from the production line and are fed into a bending machine for bending, then the bent valve plates are manually conveyed to the production line for bending, then in the next bending process, detection is manually carried out to judge whether the bending requirement is met, and finally a plurality of valve plates are stacked and bundled according to the specified quantity.

Obviously, the above-described manner of operation, in particular during packaging, has the following drawbacks:

1. the manual operation is low in efficiency, and whether the number of the valve plates is accurate or not is difficult to ensure;

2. the valve plate cannot be automatically produced, and a large amount of manpower and material resources are required, so that the production cost is high, and the development of automatic processing of the valve plate is not facilitated;

3. the wire binding strength is difficult to be consistent, and the wire binding is not excessively loosened or excessively tightened, so that serious inconvenience is brought to subsequent packaging.

Disclosure of Invention

The invention aims to solve the technical problems of overcoming the defects of the prior art, and provides a brand-new automatic valve plate packaging machine which not only can automatically receive valve plates processed by a bending machine, but also can automatically transfer the valve plates to a packaging area according to the packaging quantity requirement of the valve plates and automatically finish the work of wire feeding, wire shearing, wire tying and knotting, has high efficiency, ensures that the knotting force is completely consistent, and can adjust the tightness of the tying wires according to the packaging requirement.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides an automatic packaging machine of valve block, which comprises a frame, be located the mesa in the frame, erect the support on the mesa, the mechanism is unreeled to the binding wire that sets up on the support, dock with valve block processing equipment and collect the receipts material mechanism of valve block according to packing quantity requirement, be located the mechanism of receiving of binding wire unreeled, a transport mechanism for transferring the range upon range of valve block that the receipts material mechanism was collected to positioning mechanism, be arranged in sending the binding wire into the connecting hole of alignment setting on the range upon range of valve block of positioning mechanism, a control mechanism for controlling the wire feeding length of wire feeding mechanism, communicate with control mechanism and cut the shearing mechanism that cuts the binding wire under the requirement that satisfies wire feeding length, be used for pressing together the both ends of cutting the back binding wire, receive the material device, wherein the binding wire upper and lower ends of being cut off respectively emit range upon range of back valve block top surface and bottom surface, the mechanism of tying knots can be according to packing requirement automatic adjustment binding wire torsion's tightness.

Preferably, the wire feeding mechanism comprises one or more groups of conveying rollers which are positioned below the wire binding unreeling mechanism and positioned at two sides of the wire binding, a shaping unit which is positioned between the conveying rollers and the wire binding unreeling mechanism and enables the wire binding entering the conveying rollers to be relatively flat, and a driving unit for driving one side or/and two sides of the wire binding to rotate, wherein the wire binding is unreeled from the wire binding unreeling mechanism and conveyed into a connecting hole of the laminated valve plate on the positioning mechanism through the shaping unit under the relative rotation of the one or more groups of conveying rollers.

Preferably, the shaping unit comprises a plurality of shaping rollers which are arranged in parallel with the conveying rollers and are rotatably arranged on the support, wherein the shaping rollers are positioned on two opposite sides of the binding wire, the shaping rollers on the two sides are distributed in a staggered manner, and the binding wire sequentially passes through the shaping rollers on the two sides from top to bottom and is guided into the conveying rollers. The shaping unit is not used for shaping the binding wire into a straight binding wire, and mainly shaping the binding wire with a large deformation angle and large amplitude into the binding wire with a small deformation angle and small amplitude, so that the binding wire is relatively flat, and the subsequent straightening is convenient.

Further, the wire feeding mechanism further comprises a fixing frame positioned at the wire outlet end part of the conveying roller, and a straightening pipe vertically arranged on the fixing frame and aligned with the wire outlet end part of the conveying roller, wherein the inner diameter of the straightening pipe is equal to the outer diameter of the binding wire, and the straightening pipe can be adjusted up and down along the length direction of the straightening pipe.

Specifically, be equipped with the guide rail that extends along vertical direction on the support, the mount can be slided and set up on the guide rail, and still be equipped with the locking piece that is used for fixing a position the mount on the guide rail on the mount.

According to a specific implementation and preferred aspect of the present invention, the material receiving mechanism comprises a carrier for carrying the laminated valve plates, and a collecting unit for collecting the valve plates according to the number of packages; the positioning mechanism comprises a positioning panel which is horizontally arranged and used for supporting the carrier so that a material receiving opening of the carrier is upwards arranged.

Preferably, the carrier comprises a bottom plate, a positioning module arranged on the bottom plate and provided with a die cavity, and a supporting rod used for erecting the bottom plate on a positioning panel, wherein the valve plate is horizontally stacked in the die cavity, an avoidance hole for a binding wire to pass through and an avoidance groove communicated with the outside from the avoidance hole are arranged on the bottom plate, the avoidance groove is arranged towards the knotting mechanism, the side edge of the positioning module, which is close to the knotting mechanism, is provided with an avoidance gap communicated with the avoidance groove, and after knotting is completed, the binding wire can pass through the avoidance groove and the avoidance gap of the carrier to take out the knotted valve plate.

Further, a cushion block positioned below the avoidance hole is further arranged on the positioning panel, the lower end part of the binding wire is abutted against the cushion block, and the lengths of the binding wire, which respectively emerge from the laminated valve plate, are equal to those of the upper end part and the lower end part of the emerging bottom plate. Thereby ensuring the knotting quality and preventing the phenomenon of loose knots caused by over short at one end part.

According to still another specific implementation and preferred aspect of the present invention, the knotting mechanism includes a wire pressing unit and a twisting unit located at opposite sides of the positioning mechanism, wherein the wire pressing unit includes a U-shaped frame with an opening facing the twisting unit and horizontally arranged, pinch rollers respectively located at upper and lower ends of the U-shaped frame, and a driving assembly for driving the U-shaped frame to move close to or away from the twisting unit, and when the U-shaped frame approaches the twisting unit, the pinch rollers respectively force the wires, which emerge from the top and bottom surfaces of the laminated valve plates, to bend towards the twisting unit; the torsion unit comprises a positioning clamp capable of clamping the upper end and the lower end of the bent binding wire from two sides and a torsion assembly used for driving the positioning clamp to rotate around the moving direction of the U-shaped frame.

Preferably, the upper support rod and the lower support rod forming the U-shaped frame can be arranged in a relative motion mode, the pinch roller is arranged at the outer end parts of the upper support rod and the lower support rod in a rotating mode around the axis direction of the pinch roller respectively, and the wheel surface of the pinch roller is sunken from two sides to the middle part and the section of the pinch roller is in a V shape. The bending point is adjusted by the relative movement of the upper support rod and the lower support rod of the U-shaped frame on one hand, so that the requirement of tightness of the binding wire is met; on the other hand, when the bending is completed, the relative movement of the upper support rod and the lower support rod can be controlled so that the end parts of the tie wire, which are bent up and down, are intersected.

In this example, pinch rollers on upper branch and lower branch press the tie wire tip after buckling to dodge breach and dodge the inslot respectively, then make the tie wire intersect, and the locating clip centre gripping is in crossing department, then according to the requirement of torsion number of turns for the locating clip centre gripping tie wire is rotatory in place, is accomplished and is knotted.

In addition, the material receiving device comprises a turnover mechanism, a slide way and a material receiving box, wherein the turnover mechanism is used for driving the positioning mechanism to turn over, and when the positioning mechanism turns over, the stacked gaskets in the carrier fall to the slide way under the self gravity and slide into the material receiving box, so that the material receiving of the product is completed.

Specifically, be equipped with on the mesa and dodge the breach that is linked together with the slide, tilting mechanism include the upset motor, with the output shaft fixed connection's of upset motor linking arm, wherein be equipped with the interface on the linking arm, the locating panel is pegged graft in interface department from the middle part of one end.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

the invention not only can automatically receive the valve plates processed by the bending machine, but also can automatically transfer the valve plates to a packing area according to the packing quantity requirement of the valve plates and automatically finish the work of wire feeding, wire shearing, wire binding and knotting, has high efficiency, and simultaneously has completely consistent knotting force, and can adjust the tightness of the wire binding according to the packing requirement.

Drawings

FIG. 1 is a schematic perspective view of an automatic packing machine for valve sheets according to the present invention;

FIG. 2 is an enlarged schematic view of a part of the structure of FIG. 1;

FIG. 3 is a schematic view of the valve sheet after threading;

FIG. 4 is a schematic view of the valve sheet after tying;

wherein: 1. a frame; 30A, a carrier; 300a, a bottom plate; 301a, positioning blocks; 302a, struts; k. avoiding the notch;

30. a table top; 30a, avoiding grooves; 31. a bracket; 31a, a guide rail; 31b, locking member; 32. a wire binding unreeling mechanism; 320. a rotating shaft; 321. a winding roll; 33. a positioning mechanism; 330. positioning a panel; 34. a wire feeding mechanism; 340. a conveying roller; 341. a driving unit; 342. a shaping unit; 3420. shaping rollers; 343. calibrating a tube; 344. a fixing frame; 35. a control mechanism; 36. a shearing mechanism; 360. a pair of scissors; 361. a cylinder assembly; 37. a knotting mechanism; 370. a wire pressing unit; 3700. a U-shaped frame; 370a, upper struts; 370b, lower struts; 3701. a pinch roller; 3702. a drive assembly; 371. a torsion unit; 3710. a positioning clamp; 371a, clip; 371b, power components; 3711. a torsion assembly; 371c, sliding rails; 371d, rack; 371e, support frame; 371f, gears; 371g, connection block; 371h, a pen-shaped cylinder; 38. a material receiving device; 380. a turnover mechanism; 3800. a chuck; 3801. a turnover motor; 381. a slideway; 382. a receiving box; 39. a cushion block;

5. binding wires;

6. and a valve plate.

Detailed Description

The invention will now be described in further detail with reference to the drawings and to specific examples.

Referring to fig. 1 to 4, the automatic valve sheet packaging machine provided in this embodiment includes a frame 1, a table 30 located on the frame 1, a stand 31 standing on the table 30, a wire unwinding mechanism 32 disposed on the stand 31, a receiving mechanism 3A abutting against a valve sheet processing apparatus and collecting valve sheets according to the number of packages, a positioning mechanism 33 located below the wire unwinding mechanism 32, a transfer mechanism for transferring stacked valve sheets collected by the receiving mechanism 3A to the positioning mechanism 33, a wire feeding mechanism 34 for feeding wires into connection holes aligned on the stacked valve sheets of the positioning mechanism 33, a control mechanism 35 for controlling the wire feeding mechanism 34 to cut short, a shearing mechanism 36 communicating with the control mechanism 35 and shearing the wires under the requirement of satisfying the wire feeding length, a knotting mechanism 37 for binding both ends of the sheared wires, and a receiving device 38, wherein the upper and lower end portions of the sheared wires respectively pop up the top and bottom surfaces of the stacked valve sheets, and the knotting mechanism 37 can automatically adjust the tightness of the twisted wires according to the package requirements.

Specifically, the wire-binding unreeling mechanism 32 includes a rotating shaft 320 rotatably disposed on the support 31, and a winding roll 321 positioned on the rotating shaft 320, wherein the rotating shaft 320 is disposed along a horizontal direction and perpendicular to the support 31, and the wire-binding is wound on the winding roll 321.

The positioning mechanism 33 is located below the wire unwinding mechanism 32 and includes a horizontally disposed positioning panel 330 located above the table 30.

The material receiving mechanism 3A comprises a carrier 30A for bearing the laminated valve plates and a collecting unit for collecting the valve plates according to the packing quantity requirement; the positioning mechanism 33 is located below the wire unwinding mechanism 32, and the positioning mechanism 33 includes a positioning panel 330 that is disposed horizontally and is used to support the carrier 30a such that the receiving opening of the carrier 30a is disposed upward.

The carrier 30A comprises a bottom plate 300A, a positioning block 301a arranged on the bottom plate 300A and provided with a die cavity, and a supporting rod 320A for erecting the bottom plate 300A on a positioning panel 330, wherein the valve plates are horizontally stacked in the die cavity, an avoidance hole for a binding wire to pass through and an avoidance groove communicated with the outside from the avoidance hole are formed in the bottom plate 300A, an avoidance notch k communicated with the avoidance groove is formed in the positioning block 301a, the avoidance groove is arranged towards a knotting mechanism, a cushion block 39 positioned below the avoidance hole is further arranged on the positioning panel 330, the lower end part of the binding wire is abutted against the cushion block 39, and the binding wire respectively emits the stacked valve plates and the lengths of the upper end part and the lower end part of the bottom of the carrier 30A are equal. Thereby ensuring the knotting quality and preventing the phenomenon of loose knots caused by over short at one end part.

Meanwhile, the avoidance hole, the avoidance groove and the avoidance notch k have the main purposes of avoiding the binding wire, so that the binding wire is convenient to tie on one hand, and the valve plate is convenient to take out from the carrier 30A after the tying wire is tied on the other hand.

The wire feeding mechanism 34 includes one or more sets of conveying rollers 340 located below the rotating shaft 310 and located at two sides of the wire binding, and a driving unit 341 for driving the conveying rollers 340 at one side or/and two sides of the wire binding to rotate, where the wire binding is unwound from the wire binding reel and conveyed into the connecting hole of the laminated valve sheet on the positioning mechanism 33 under the relative rotation of the one or more sets of conveying rollers 340.

Further, a shaping unit 342 is provided between the conveying roller 340 and the rotating shaft 320 to make the binding wire entering the conveying roller 340 relatively flat.

The shaping unit 342 comprises a plurality of shaping rollers 3420 which are arranged in parallel with the conveying rollers 340 and are rotatably arranged on the bracket 31, wherein the shaping rollers 3420 are positioned on two opposite sides of the binding wire, the shaping rollers 3420 on the two sides are staggered, and the binding wire sequentially passes through the shaping rollers 3420 on the two sides from top to bottom and is led into the conveying rollers 340. Here, the shaping unit 342 is not to shape the binding wire into straight one, but mainly shapes the binding wire with a larger deformation angle and amplitude into the binding wire with a smaller deformation angle and amplitude, so that the binding wire is relatively flat, thereby facilitating subsequent straightening.

Further, the wire feeding mechanism 34 further includes a straightening tube 343 disposed vertically at the wire outlet end of the conveying roller 340, and a fixing frame 344, wherein the inner diameter of the straightening tube 343 is equal to the outer diameter of the binding wire. Through the arrangement of the aligning pipes 343, the binding wires sent out from the aligning pipes 343 can be vertically inserted into the connecting holes of the laminated valve plates.

In this example, the fixing frame 344 is provided on the bracket 31 so as to be movable and adjustable up and down along the height direction of the bracket 31. The distance between the straightening tube 343 and the conveying roller 340 is mainly adjusted according to the flatness of the binding wires, so that the straightening adjustment is convenient.

Specifically, the bracket 31 is provided with a guide rail 31a, the fixing frame 344 is slidably disposed on the guide rail 31a, and the fixing frame 344 is further provided with a locking member 31b for locking the fixing frame 344 on the guide rail 31 a.

The control means 35, which may be a sensor or a gauge with a measure of the length of wire fed, have the same end result,

in this example, the control mechanism 35 is a rolling device, which can measure the length of the binding wire fed into the positioning mechanism 33, and when the length meets the knotting requirement, the signal is fed back to the shearing mechanism 36 and the wire feeding mechanism 34, the wire feeding is stopped, the binding wire is sheared, then the binding wire freely passes through the avoiding hole of the carrier 30A, and the lower end part is erected on the cushion block 39.

The cutting mechanism 36 comprises blades 360 which are arranged at the two sides of the binding wire and are staggered up and down, and a cylinder assembly 361 for driving the blades 360 to move relatively so as to cut the binding wire.

The knotting mechanism 37 comprises a wire pressing unit 370 and a twisting unit 371 which are positioned on two opposite sides of the positioning mechanism 33, wherein the wire pressing unit 370 comprises a U-shaped frame 3700 which is horizontally arranged with an opening facing the twisting unit 371, pressing wheels 3701 respectively positioned at the upper end and the lower end of the U-shaped frame 3700, and a driving component 3702 for driving the U-shaped frame 3700 to move close to or far away from the twisting unit 371, and when the U-shaped frame 3700 approaches to the twisting unit 371, the pressing wheels 3701 respectively force the wire binding out of the top surface and the bottom surface of the laminated valve plates to be bent and arranged towards the twisting unit 371; the torsion unit 371 includes a positioning clamp 3710 capable of clamping the upper and lower ends of the bent wire from both sides, and a torsion assembly 3711 for driving the positioning clamp 3710 to rotate around the moving direction of the U-shaped frame 3700.

In this example, the wire pressing unit 370 and the twisting unit 371 are located on both front and rear sides of the positioning mechanism 33.

Further, the upper and

lower support rods

370a and 370b forming the U-shaped frame 3700 are disposed so as to be movable relative to each other, and the pressing wheel 3701 is disposed at outer ends of the upper and

lower support rods

370a and 370b so as to be rotatable about its own axis.

In this example, the tread of puck 3701 is concave from both sides toward the middle and has a V-shaped cross section. The binding wire is conveniently positioned at the bottom of the V, so that the bending direction is limited, and the positioning clamp 3710 can be conveniently and accurately clamped.

Meanwhile, the U-shaped frame is arranged, so that the upper end and the lower end can pass through the bottom of the bottom plate 300A of the carrier 30A and the top of the positioning block 301a, the binding wires are forced to bend towards the avoidance groove and the avoidance notch, the upper support rod 370A and the lower support rod 370b are relatively close to each other, the bent binding wires are intersected, and then the U-shaped frame is reset.

In this example, the positioning clamp 3710 is clamped at the intersection of the binding wires, so that the binding wires are twisted more conveniently, and meanwhile, after the upper support rod 370a and the lower support rod 370b are deformed by extrusion, the upper end and the lower end of the two binding wires are arranged in parallel, at this time, the positioning clamp 3710 is clamped at the end of the parallel binding wires and then rotated, and the binding wires can be knotted, so that the binding wires are good in parallelism or intersection after being bent.

Specifically, the positioning clamp 3710 includes clamping pieces 371a disposed at two sides of the avoidance gap and parallel to each other, and a power component 371b for driving the clamping pieces 371a to move relatively, and when in use, the two clamping pieces 3710 are relatively close to each other to clamp the front end of the bent or intersected binding wire.

The torsion assembly 3711 includes a slide rail 371c positioned on the table board 30 and extending along a left-right direction (perpendicular to a moving direction of the U-shaped frame), a rack 371d slidably disposed on the slide rail 371c, a gear 371f positioned on the table board 30 through a support frame 371e and matched with the rack 371d, a connection block 371g fixedly connected with an end portion of a central shaft of the gear 371f, and a pen cylinder 371h for driving the rack 371f to move, wherein the central shaft of the gear 371f extends along a front-rear direction, and the connection block 371g is fixedly connected with the positioning clip 3710 through an external connection piece.

The material receiving device 38 comprises a turnover mechanism 380, a slideway 381 and a material receiving box 382, wherein the turnover mechanism 380 is used for driving the positioning mechanism 33 to turn around the front-back direction, and when the positioning mechanism 33 turns over, the stacked gaskets in the carrier 30A fall down to the slideway 381 under the self gravity and slide into the material receiving box 382, so that the material receiving of the product is completed.

Specifically, the tilting mechanism 380 includes a chuck 3800 fixedly clamped on both sides of the positioning panel 330, and a tilting motor 3801 for driving the chuck 3800 to tilt around a horizontal direction (front-rear direction).

Meanwhile, an avoidance groove 30A communicated with a slide 381 is formed in the table 30, wherein the positioning panel 330 and the carrier 30A on the table 30 are turned from the avoidance groove 30A into the table 30, so that the laminated valve plate in the die cavity is poured out and slides from the slide 381 to the material receiving box 382.

In addition, in this example, all drives such as U-shaped frames, locating clamps, shearing mechanisms, etc. are pneumatic.

Then, combining fig. 3 and fig. 4, it is very clear that this application is main purpose, just will tie the silk 5 and pass the connecting hole of range upon range of valve block 6, then tie the both ends of silk tightly, whole process is whole automatic to be accomplished, thoroughly replaces the manual work, not only packing quantity is accurate, and the quality of knoing is good moreover, is difficult for loosening, and the dynamics of knoing is completely unanimous simultaneously, is convenient for follow-up packing work more, in addition, work efficiency improves greatly, human cost greatly reduced.

The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. An automatic packaging machine of valve block, its characterized in that: the automatic bundling and uncoiling machine comprises a frame, a table top positioned on the frame, a support erected on the table top, a bundling and uncoiling mechanism arranged on the support, a material receiving mechanism which is in butt joint with valve plate processing equipment and used for collecting valve plates according to the packing quantity requirement, a positioning mechanism positioned below the bundling and uncoiling mechanism, a transferring mechanism used for transferring stacked valve plates collected by the material receiving mechanism to the positioning mechanism, a wire feeding mechanism used for feeding bundling wires into connecting holes which are arranged on stacked valve plates of the positioning mechanism in an aligned mode, a control mechanism used for controlling the wire feeding length of the wire feeding mechanism, a shearing mechanism which is communicated with the control mechanism and used for shearing bundling wires under the condition that the wire feeding length is met, a knotting mechanism used for fastening two ends of the bundling wires after shearing, and a material receiving device, wherein the material receiving mechanism comprises a carrier used for carrying the stacked valve plates and a collecting unit used for collecting the valve plates according to the packing quantity requirement; the positioning mechanism comprises a positioning panel which is horizontally arranged and used for supporting the carrier so that a material receiving opening of the carrier is upwards arranged; the carrier comprises a bottom plate, a positioning module arranged on the bottom plate and provided with a die cavity, and a supporting rod used for erecting the bottom plate on the positioning panel, wherein the valve plates are horizontally stacked in the die cavity, an avoidance hole for a binding wire to pass through and an avoidance groove communicated with the outside from the avoidance hole are formed in the bottom plate, the avoidance groove faces to the knotting mechanism, an avoidance gap communicated with the avoidance groove is formed in the side edge, close to the knotting mechanism, of the positioning module, and after knotting is completed, the binding wire can pass through the avoidance groove and the avoidance gap of the carrier to take out the knotted valve plates; the positioning panel is also provided with a cushion block positioned below the avoidance hole, the lower end part of the binding wire is abutted against the cushion block, and the lengths of the binding wire, which respectively emerge from the laminated valve plate, are equal to those of the upper end part and the lower end part of the bottom plate; the upper end and the lower end of the sheared binding wire respectively emit the top surface and the bottom surface of the laminated valve plate, the knotting mechanism can automatically adjust the twisting tightness of the binding wire according to the packaging requirement, and the knotting mechanism comprises a wire pressing unit and a twisting unit which are positioned at two opposite sides of the positioning mechanism, wherein the wire pressing unit comprises a U-shaped frame with an opening facing the twisting unit and horizontally arranged, pressing wheels respectively positioned at the upper end and the lower end of the U-shaped frame, and a driving assembly for driving the U-shaped frame to move close to or far away from the twisting unit, when the U-shaped frame approaches to the twisting unit, the pressing wheels respectively force the binding wire which emits the top surface and the bottom surface of the laminated valve plate to be bent towards the twisting unit, and the pressing wheels are formed in a relative motion arrangement between an upper supporting rod and a lower supporting rod of the U-shaped frame and are respectively arranged at the outer end parts of the upper supporting rod and the lower supporting rod in a rotating manner around the axis direction of the pressing wheels; the twisting unit comprises a positioning clamp capable of clamping the upper end and the lower end of the bent binding wire from two sides and a twisting assembly used for driving the positioning clamp to rotate around the moving direction of the U-shaped frame, and the wheel surface of the pinch roller is sunken from two sides to the middle part and the section of the pinch roller is V-shaped; the material receiving device comprises a turnover mechanism, a slide way and a material receiving box, wherein the turnover mechanism is used for driving the positioning mechanism to turn over, and when the positioning mechanism turns over, the stacked gaskets in the carrier fall to the slide way under the self gravity and slide into the material receiving box, so that the material receiving of the product is completed.

2. An automatic valve sheet packing machine according to claim 1, wherein: the wire feeding mechanism comprises one or more groups of conveying rollers, a shaping unit and a driving unit, wherein the one or more groups of conveying rollers are positioned below the wire binding unreeling mechanism and positioned on two sides of the wire binding, the shaping unit is positioned between the conveying rollers and the wire binding unreeling mechanism, so that the wire binding entering the conveying rollers is relatively flat, the driving unit is used for driving one side or two sides of the wire binding to rotate, and the wire binding is unreeled from the wire binding unreeled mechanism and conveyed into a connecting hole of the laminated valve plate on the positioning mechanism through the shaping unit under the relative rotation of the one or more groups of conveying rollers.

3. An automatic valve sheet packing machine according to claim 2, wherein: the shaping unit comprises a plurality of shaping rollers which are arranged in parallel with the conveying rollers and are rotatably arranged on the support, wherein the shaping rollers are positioned on two opposite sides of the binding wire, the shaping rollers on two sides are distributed in a staggered mode, and the binding wire sequentially passes through the shaping rollers on two sides from top to bottom and is guided into the conveying rollers.

4. An automatic valve sheet packing machine according to claim 2 or 3, wherein: the wire feeding mechanism further comprises a fixing frame positioned at the wire outlet end part of the conveying roller, and a straightening pipe vertically arranged on the fixing frame and provided with a pipe orifice aligned with the wire outlet end part of the conveying roller, wherein the inner diameter of the straightening pipe is equal to the outer diameter of the binding wire, and the straightening pipe can be vertically adjusted along the length direction of the straightening pipe.