CN115008566B - Pneumatic plane nail stacking equipment for modular chair and nail stacking method thereof - Google Patents

Abstract

The invention provides a pneumatic plane staple stacking device of a modular chair and a staple stacking method thereof; the equipment comprises a base, a workbench, a station switching mechanism, a fabric feeding mechanism and an automatic staple stacking mechanism. The workbench is connected to the base in a sliding mode. The station switching mechanism drives the workbench to switch between a feeding station and a stacking station; and a die groove body for mounting the plate and the fabric is arranged on the workbench. The fabric feeding mechanism is used for placing the fabric on the workbench. The invention turns the upturned fabric in the die groove body to the top of the plate through the four mounting plates, thereby providing conditions for automatic tacking; simultaneously, the mounting panel that is located between material loading station and the flat nail station just has realized "horizontal migration → slope reduction → horizontal migration" motion process under the condition of only utilizing single motor through slope guiding mechanism, has both avoided the mounting panel to block the surface fabric of upwarping and has carried out the condition that the station switches, can effectively accomplish the work of pushing the surface fabric out of the way again.

Description

Modularized chair pneumatic plane nail stacking equipment and nail stacking method thereof

Technical Field

The invention belongs to the technical field of intelligent manufacturing, and particularly relates to a novel full-automatic nail stacking process and matched equipment for important processes in the field of manufacturing furniture such as chairs, sofas and the like.

Background

The flat nail process is an important process in the manufacturing process of furniture such as chairs, sofas and the like, and various fabrics are fixed on the plate frames or plates of the furniture such as the chairs, the sofas and the like by the flat nails. According to the position of the code nail, the code nail is divided into a plane code nail and a peripheral code nail. The plane tacking is to fix the fabric on a plate frame or a plate plane by tacking; the periphery tacking is to fix the fabric on the plate frame or the vertical surface of the periphery of the plate by tacking. Due to the difference of the positions of the code nails, the processing technology and the matched equipment have great difference. Almost all furniture manufacturing enterprises such as chairs, sofas and the like adopt the manual nail stacking operation mode at present, not only the production efficiency is low, the labor intensity of operating personnel is large, but also the nail stacking quality consistency is poor, and the main expression is as follows: the interval between the nails is inconsistent, and the difference of the binding fastness of the nails is large, etc. In addition, the manual nail stacking operation mode hinders the automation and the intellectualization of furniture manufacturing such as chairs, sofas and the like, and influences the progress of high-quality development of enterprises.

Therefore, furniture manufacturing enterprises such as chairs, sofas and the like urgently need a novel automatic nail stacking process and matched equipment, replace the current manual nail stacking operation mode, can improve the production efficiency and the quality of the nails, and can supplement a key ring for the automatic intelligent production line for manufacturing the furniture such as chairs, sofas and the like.

Disclosure of Invention

The invention aims to provide an automatic process for plane staple and modularized pneumatic staple stacking equipment in the field of furniture manufacturing such as chairs and sofas.

A pneumatic plane nail stacking device of a modularized chair comprises a base, a workbench, a station switching mechanism, a fabric feeding mechanism and an automatic nail stacking mechanism. The workbench is connected to the base in a sliding mode. The station switching mechanism drives the workbench to switch between a feeding station and a stacking station; and a die groove body for mounting the plate and the fabric is arranged on the workbench. The section shape of the die groove body corresponds to that of the plate. The fabric feeding mechanism is used for placing the fabric on the workbench.

The automatic nail stacking mechanism comprises a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate which surround the nail stacking station; the inboard edge of first mounting panel, second mounting panel, third mounting panel and fourth mounting panel all is provided with nail rifle installation position. The shapes of the four nail gun mounting positions correspond to the shapes of the four edges of the plate respectively. And a plurality of automatic setting nail guns are arranged on each nail gun mounting position. The first mounting plate is located between the feeding station and the stacking nail station. The second mounting plate, the third mounting plate and the fourth mounting plate are all connected with the base in a sliding mode and slide horizontally under the driving of the linear movement driving mechanism.

The first mounting plate is connected with the base through an inclined guide assembly. The inclined guide assembly comprises a sliding block, a limiting pin, a jacking spring and an inclined guide seat. The slider is connected on the base in a sliding manner. And a limiting pin is fixed at the top of the sliding block. The first mounting plate is connected to the limiting pin in a sliding mode along the non-horizontal direction. The jacking spring is arranged on the sliding block and applies upward elastic force to the first mounting plate. The inclined guide seats are all fixed on the base; the inclined guide seat is provided with a guide surface facing downwards. In the process that the first mounting plate slides towards the direction close to the stacking station, the guide surface of the inclined guide seat guides the first mounting plate to reduce the height; the height change of the first mounting plate in the sliding process enables the fabric edge warped upwards when the work station is switched not to be blocked by the first mounting plate. The sliding block, the second mounting plate, the third mounting plate and the fourth mounting plate are driven by a power element to move. When the first mounting plate, the second mounting plate, the third mounting plate and the fourth mounting plate move inwards to the position above the tacking station, the upward-turned fabric in the die groove body of the workbench can be turned over to the edge of the top surface of the plate, and an automatic tacking gun is used for tacking operation.

Preferably, the die groove body adopts a through groove; and a finished product blanking mechanism is arranged at the bottom of the workbench. Finished product unloading mechanism includes baffle and baffle switching drive assembly. The baffle opening and closing driving assembly drives the baffle to close the bottom of the die groove body or open the bottom of the die groove body, and supporting and automatic blanking of the fabric and the plate are achieved.

Preferably, the baffle opening and closing driving assembly comprises a connecting rod, a hinge seat, a first linear power element and a second linear power element. The hinged seat and the first linear power element are fixed on the bottom surface of the workbench and are respectively positioned on the opposite sides of the die groove body. The first linear power element pushing rod is arranged vertically downwards. One end of the second linear power element is rotatably connected with the hinge base. The connecting rod is L-shaped, one end of the connecting rod is fixed with the pushing rod of the first linear power element, and the other end of the connecting rod is rotatably connected with one end of the bottom surface of the baffle. The other end of the baffle is rotationally connected with the other end of the second linear power element.

Preferably, the fabric feeding mechanism comprises a fabric feeding assembly, a fabric grabbing assembly and a dragging and feeding assembly. The fabric feeding assembly is arranged on one side of the feeding station and comprises a fabric storage table and a lifting driving assembly. The fabric storage table is connected to the base in a sliding mode in the vertical direction and is driven by the lifting driving assembly to move up and down; the fabric storage table is used for storing the stacked fabrics. The dragging and feeding assembly is arranged right above the feeding station and comprises a fabric dragging plate and a dragging and driving assembly. The shell fabric planker is connected on the base in a sliding mode. The shell fabric planker is driven by the dragging driving component. The fabric dragging plate is provided with a plurality of fabric grabbing components facing the fabric feeding component; the fabric grabbing component is used for grabbing the fabric on the uppermost layer of the fabric storage table. The dragging and feeding assembly is used for driving the fabric grabbing assembly to drag the grabbed fabric to a die groove body of the workbench.

Preferably, the fabric grabbing component comprises a negative pressure suction nozzle, a suction nozzle support, a movable base plate and a base plate driving component; one end of the suction nozzle support is fixed on the fabric carriage, and the other end of the suction nozzle support is fixed with a negative pressure suction nozzle which is arranged downwards. The suction port of the negative pressure suction nozzle is arranged downwards. The movable backing plate is connected to the suction nozzle bracket in a sliding manner. The movable base plate is driven by the base plate driving assembly and is provided with two working positions, namely a grabbing working position and a releasing working position, and when the movable base plate is positioned at the grabbing working position, the movable base plate is positioned right below the negative pressure suction nozzle, so that the suction force of the negative pressure suction nozzle to the breathable fabric is improved; when the movable base plate is at the releasing working position, the movable base plate is staggered with the position right below the negative pressure suction nozzle.

Preferably, when the movable base plate is positioned at the grabbing working position, the distance between the movable base plate and the suction opening of the negative pressure suction nozzle is T-1.5T; and T is the thickness of the fabric.

Preferably, the pneumatic plane code nail equipment of the modular chair further comprises a plate material feeding mechanism; the plate material feed mechanism adopt an end effector as an industrial robot of the grabbing mechanism.

Preferably, the lifting driving assembly comprises a feeding screw rod and a feeding motor. The feeding screw rod which is vertically arranged is rotatably connected to the base. The fabric storage table and the feeding screw form a screw pair. The feeding screw rod is driven to rotate by a feeding motor.

Preferably, the dragging drive assembly comprises a pull-back spring, a dragging motor, a winding roller and a dragging belt. The material dragging motor is fixed on the base and is positioned on one side of the feeding station, which is far away from the fabric feeding assembly; a belt winding roller is fixed on the dragging motor; one end of the towing belt is wound on the winding roller, and the other end of the towing belt is fixed with the fabric planker. The pull-back spring is sleeved on the fabric feeding guide rod, and two ends of the pull-back spring are respectively fixed with the base and the fabric dragging plate. The pulling-back spring applies elastic force to the fabric planker towards one side far away from the belt winding roller.

Preferably, the pad driving assembly includes an electromagnet, a return spring, and a guide shaft. The guide shaft is fixed at the bottom of the suction nozzle bracket. The vertical part of the L-shaped movable base plate is connected with the guide shaft in a sliding way. The electromagnet is arranged on the inner side of the negative pressure suction nozzle. The return spring is sleeved on the guide shaft, and two ends of the return spring respectively abut against the movable base plate and the electromagnet. The movable shim plate can be subjected to the attraction force of the energized electromagnet.

The working method of the pneumatic plane dowel equipment of the modular chair comprises the following specific steps:

step one, a single fabric is placed on a die groove body of a workbench through a fabric feeding mechanism.

Secondly, placing the plate on the die groove body by a plate feeding mechanism, and pressing the fabric into the die groove body by the plate; the sheet material is completely placed in the die groove body, and the edge of the fabric is upwards turned to the outside of the die groove body under the extrusion.

Thirdly, the working table is driven by the working position switching mechanism to move to a nail stacking working position; the first mounting plate, the second mounting plate, the third mounting plate and the fourth mounting plate in the automatic tacking mechanism move inwards to push the fabric edges warped upwards around the sheet material to the top surface of the sheet material. And then, the movable setting nails are used for synchronously setting the setting nails on the fabric and the plate.

And step four, opening a baffle plate in the finished product blanking mechanism, and outputting the fabric and the plate material which finish the tacking operation from the bottom of the die groove body.

And step five, driving the workbench to move to a feeding station by the station switching mechanism.

And step six, repeating the step one to the step five to realize continuous automatic stacking and nailing of the plate and the fabric.

The invention has the beneficial effects that:

1. the four mounting plates are used for turning the upward warped fabric in the die groove body to the top of the plate, so that conditions are provided for automatic tacking; meanwhile, the mounting plate between the feeding station and the tacking station realizes the motion process of horizontal movement → inclined reduction → horizontal movement under the condition of only utilizing a single motor through the inclined guide mechanism, so that the condition that the mounting plate blocks the upturned fabric to switch the stations is avoided, and the fabric is pushed to be flat effectively.

2. The fabric feeding mechanism provided by the invention has the advantages that the negative pressure suction nozzle is matched with the partition plate driven by the electromagnet, the partition plate is pushed to the position below the fabric adsorbed position after the fabric is sucked up by the suction nozzle, and the gas fluidity below the fabric is reduced, so that the stability of the breathable fabric adsorbed by the negative pressure suction nozzle is improved, and the fabric feeding reliability is obviously improved.

3. The die groove body is a through groove, and the opening and closing of the baffle plate in the finished product blanking mechanism can realize the support and automatic blanking of the plate and the fabric.

4. The automatic nail stacking machine solves the problem that automatic nail stacking operation is difficult to realize for the plate materials and the fabrics of furniture such as chairs, sofas and the like, replaces the manual operation of nail stacking for a long time by automatic equipment, not only reduces the labor intensity of operators, but also improves the nail stacking quality, and is key equipment of an automatic intelligent production line for manufacturing the furniture such as chairs, sofas and the like. Therefore, the method has remarkable economic, social and environmental benefits.

Drawings

FIG. 1 is a schematic view (top view) of the overall structure of the present invention;

FIG. 2 isbase:Sub>A schematic view ofbase:Sub>A fabric feeding mechanism according to the present invention (cross-sectional view taken along section A-A in FIG. 1);

FIG. 3 is a schematic view of the negative pressure nozzle assembly of the present invention (enlarged partial view in FIG. 2);

FIG. 4 is a diagram showing the relationship among the fabric carriage, the fabric loading guide bar and the pullback spring of the fabric loading mechanism according to the present invention (cross-sectional view taken along section B-B in FIG. 1);

FIG. 5 is a schematic view of a blanking mechanism of the present invention (cross-sectional view of section C-C in FIG. 1);

FIG. 6 is a schematic view of a first tack assembly of the present invention (cross-sectional view taken along section D-D in FIG. 1);

FIG. 7 is a schematic illustration (cross-sectional view E-E in FIG. 1) of a second staple assembly and a fourth staple assembly of the present invention;

FIG. 8 is a schematic view (cross-sectional view F-F in FIG. 1) of a third staple assembly of the present invention;

FIG. 9 is a schematic representation of the angled guide assembly of the first staple assembly of the present invention (cross-sectional view taken at section G-G in FIG. 1).

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, a pneumatic plane tacking device for a modular chair comprises a base 1, a workbench 5, a workbench guide rail 11, a station switching mechanism, a fabric feeding mechanism, an automatic tacking mechanism, a finished product blanking mechanism and a plate feeding mechanism. The plate material feed mechanism adopts an end effector as an industrial robot of a grabbing mechanism. The industrial robot adopts a purchased existing robot, and the grabbing mechanism adopts a mechanical clamping jaw capable of clamping the plate, which is not described herein. The station switching mechanism, the fabric feeding mechanism, the automatic nail stacking mechanism and the finished product discharging mechanism are all arranged on the base 1.

A feeding station and a stacking nail station are arranged on the base 1 side by side. The table rail 11 is fixed to the base 1. The table 5 and the table rail 11 constitute a sliding pair. And a die groove body for mounting the plate and the fabric 37 is formed on the workbench 5. The die groove body is a through groove, and the bottom of the die groove body is sealed by a finished product discharging mechanism. The section shape of the die groove body is consistent with that of the plate. The station switching mechanism is used for driving the workbench 5 to slide and driving the plates and the fabrics in the die groove body to be switched between the feeding station and the stacking nail station. The fabric feeding mechanism and the plate feeding mechanism are respectively arranged at different positions on the side part of the feeding station. The fabric feeding mechanism and the plate feeding mechanism are respectively used for placing the fabric and the plate on the workbench 5.

In this embodiment, the station switching mechanism employs a station switching cylinder 10. The station switching cylinder 10 adopts a double-rod cylinder, the cylinder body of the double-rod cylinder is fixed on the workbench 5, and two ends of the piston rod are respectively fixed with the two supporting seats 2 on the base 1.

The fabric feeding mechanism comprises a fabric feeding assembly, a fabric grabbing assembly and a dragging and feeding assembly. The fabric feeding assembly is arranged on one side of the feeding station and comprises a feeding guide rod 34, a feeding support 35, a fabric storage table 36, a feeding base 39 and a lifting driving assembly. The supply base 39 is fixed to the side of the base 1. The feed carriage 35 is fixed above the feed base 39 by the feed guide bar 34. Each feed guide bar 34 is arranged vertically; the fabric storage table 36 and each feeding guide rod 34 form a sliding pair; the fabric storage table 36 is driven by the lifting driving component to move up and down; the lift drive assembly includes a feed screw 43 and a feed motor 33. Two ends of a vertically arranged feeding screw 43 are respectively and rotatably connected to the base 1 and the feeding support 35 through feeding bearings 42. The fabric storage table 36 and the feed screw 43 constitute a screw pair. The feed screw 43 is rotated by the feed motor 33. A plurality of sheets of fabric 37 can be stacked on the fabric storage table 36. The height of the fabric can be adjusted through the rotation of the feeding screw 43, and the fabric grabbing component is matched to realize the one-by-one grabbing of the fabric.

The dragging and feeding assembly is arranged right above the feeding station and comprises a fabric feeding guide rod 3, a fabric dragging plate 30 and a dragging and driving assembly 7. Two ends of the fabric feeding guide rod 3 are respectively fixed on the first fixing seat 4 and the second fixing seat 40 on the base 1. The axial line of the fabric feeding guide rod 3 is vertical to the axial line of the workbench guide rail 11. The fabric planker 30 and the fabric feeding guide rod 3 form a sliding pair. The fabric carriage 30 slides under the driving of the dragging driving component 7.

The tow drive assembly 7 comprises a pullback spring 41, a tow motor 6, a winding drum and a tow 7. The dragging motor 6 is fixed on the base 1 and is positioned on one side of the feeding station away from the fabric feeding assembly; a belt winding roller is fixed on the dragging motor 6; one end of the towing belt 7 is wound on the winding roller, and the other end is fixed with the fabric planker 30. The pull-back spring 41 is sleeved on the fabric feeding guide rod 3, and two ends of the pull-back spring are respectively fixed with the base 1 and the fabric dragging plate 30. The pullback spring 41 applies an elastic force to the fabric carriage 30 towards the side away from the winding roller, so as to realize the reset of the fabric carriage 30.

The two fabric grabbing components are arranged on the fabric dragging plate 30 and used for grabbing the uppermost layer of fabric, and each fabric grabbing component comprises a negative pressure suction nozzle 32, a suction nozzle support 31, a movable base plate 46, an electromagnet 44, a return spring 45 and a guide shaft 47; one end of the suction nozzle support 31 is fixed on the fabric planker 30, and the other end is fixed with a downward negative pressure suction nozzle 32. The negative pressure suction nozzle 32 is connected to an external vacuum source through a solenoid directional valve to obtain a continuous negative pressure. A horizontally disposed guide shaft 47 is fixed to the bottom of the nozzle holder 31. The vertical portion of the movable shim plate 46 in the shape of an L is slidably connected to a guide shaft 47. An electromagnet 44 is installed inside the negative pressure suction nozzle 32. The return spring 45 is sleeved on the guide shaft 47, and two ends of the return spring respectively abut against the movable backing plate 46 and the electromagnet 44. The movable base plate 46 is made of soft magnetic material and can receive the attraction force of the electrified electromagnet 44;

when the electromagnet 44 is de-energized, the movable pad 46 is separated from directly below the negative pressure suction nozzle 32. When the electromagnet 44 is energized, the horizontal portion of the movable pad 46 slides to a position just below the suction port of the negative pressure suction nozzle 32, and the distance from the suction port of the negative pressure suction nozzle 32 is s; t is more than s and less than or equal to 1.5T; and T is the thickness of the fabric.

In the working process, the negative pressure suction nozzle 32 moves to the position right above the edges of the fabrics and is communicated with negative pressure, so that the edge of the uppermost fabric is upwards sucked; then, the electromagnet 44 is electrified, and the movable backing plate 46 moves to the position right below the negative pressure suction nozzle 32, so that the fabric is clamped between the negative pressure suction nozzle 32 and the movable backing plate 46; because the surface fabric has certain gas permeability, so negative pressure suction nozzle 32 is relatively poor to the adsorption effect of surface fabric, can receive resistance such as frictional force at the in-process that the surface fabric is dragged, and then bring the risk of surface fabric and negative pressure suction nozzle 32 separation. The movable backing plate 46 is additionally arranged at a short distance below the fabric, so that the air fluidity below the fabric can be obviously reduced, the suction force of the negative pressure suction nozzle 32 to the fabric is further improved, and the fabric feeding reliability is improved. When the fabric is dragged above the die groove body, the vacuum is closed, meanwhile, the electromagnet 44 is powered off, the movable backing plate 46 retracts under the action of the return spring 45, and the fabric falls into the die groove body, so that the fabric feeding operation is completed.

The automatic nail stacking mechanism comprises a first nail stacking assembly, a second nail stacking assembly, a third nail stacking assembly and a fourth nail stacking assembly which are arranged around a nail stacking station in a surrounding mode. The first tacking component, the second tacking component, the third tacking component and the fourth tacking component are respectively used for tacking four edges (respectively facing to-X, + X, -Y and + Y directions) of the plate.

First sign indicating number nail subassembly sets up between material loading station and sign indicating number nail station. The first tack assembly includes a first mounting plate 26, a tilt guide assembly, and a first drive assembly. The tilt guide assembly includes a first tack rail 12, a slider 56, a stop pin 13, a jacking spring 55, a first mounting plate 26, and a tilt guide 27. The first flat nail track 12 is fixed on the base 1; the slider 56 is slidably connected to the first tack track 12. The top of the slide block 56 is fixed with a limit pin 13. The first mounting plate 26 is slidably connected to the stop pin 13. The jacking spring 55 is sleeved on the limit pin 13, and two ends of the jacking spring respectively abut against the first mounting plate 26 and the sliding block 56. The jacking spring 55 applies an upward spring force to the first mounting plate 26. Both sides of the first mounting plate 26 are provided with lower inclined blocks; the two inclined guide seats 27 are fixed on the base; the slide 56 is driven by a first drive assembly. The first drive assembly includes a first lead screw 28 and a first motor 29. The first lead screw 28 is supported on the base and forms a screw pair with the slider 56. The first lead screw 28 is driven to rotate by a first motor 29.

The tops of both inclined guide shoes 27 are provided with downwardly facing guide surfaces. The guide surfaces of the two inclined guide seats 27 and the top surfaces of the two lower sloping blocks are aligned in the direction of the first tack rail 12, respectively. The guide surface on the inclined guide seat 27 comprises an inclined surface positioned on one side far away from the tacking station and a horizontal surface positioned on one side close to the tacking station. The top surface of the lower inclined block comprises an inclined surface positioned on one side close to the code nail station and a horizontal surface positioned on one side far away from the code nail station. Under the cooperation of the first mounting plate 26 and the inclined guide seat 27, the first mounting plate 26 has two heights in the sliding stroke of the sliding block 56; during the movement of the first mounting plate 26 to the tacking station, the first mounting plate 26 continues to move horizontally after being lowered in height by the guide surface of the inclined guide seat 27.

When the first mounting plate 26 is far away from the tacking station, a preset distance is reserved between the bottom surface of the first mounting plate 26 and the top surface of the workbench, so that a space is made for the edge of the fabric which is warped upwards to the outside of the die slot body. When the first mounting plate 26 is close to the setting station, the bottom surface of the first mounting plate 26 is T-3T higher than the top surface of the workbench, so that the edge of the upwarp fabric is horizontally pushed to the edge of the top surface of the plate material, and an automatic setting gun is used for setting.

The second tack assembly includes a second mounting plate 23, a second tack rail 22, and a second drive assembly. The third staple assembly includes a third mounting plate 18 and a third drive assembly. The fourth tack assembly includes a fourth mounting plate 14, a fourth tack track 17, and a fourth drive assembly. Second tack track 22, fourth tack track 17 are all fixed at base 1, and are located the opposite side of tack station respectively. The length directions of the second staple track 22 and the fourth staple track 17 are perpendicular to the length direction of the workbench guide rail 11. A second mounting plate 23 is slidably attached to the second tack rail 22. The third mounting plate 18 is slidably attached to the table rail 11. The fourth mounting plate 14 is slidably attached to the fourth tack track 17.

The second drive assembly includes a second motor 25 and a second lead screw 24. The third drive assembly comprises a third motor 20 and a third lead screw 19. The fourth drive assembly comprises a fourth motor 16 and a fourth lead screw 15. The second lead screw 24 is rotatably connected to the base through a first mounting seat 53 and a first bearing seat 52. The third lead screw 19 is rotatably connected to the base. The fourth lead screw 15 is rotatably connected to the base through the second mounting seat 54 and the second bearing seat. The second mounting plate 23, the third mounting plate 18, and the fourth mounting plate 14 form screw pairs with the second lead screw 24, the third lead screw 19, and the fourth lead screw 15, respectively. The second lead screw 24, the third lead screw 19 and the fourth lead screw 15 are driven by a second motor 25, a third motor 20 and a fourth motor 16, respectively. The bottom surfaces of the second mounting plate 23, the third mounting plate 18 and the fourth mounting plate 14 are T-3T higher than the top surface of the workbench 5, and the fabric pushed to warp upwards can be flatly pressed on the plate

The inner side edges of the first mounting plate 26, the second mounting plate 23, the third mounting plate 18 and the fourth mounting plate 14 are provided with nail gun mounting positions. The shapes of the four nail gun mounting positions correspond to the shapes of the four edges of the plate respectively. A plurality of automatic setting nails guns 21 are provided at the top surface edges of the nail gun mounting positions of the first mounting plate 26, the second mounting plate 23, the third mounting plate 18, and the fourth mounting plate 14 (only one automatic setting nail gun 21 is shown on each nail gun mounting position in the drawing). The nail outlet of the automatic setting nail gun 21 is arranged downwards. The first mounting plate 26, the second mounting plate 23, the third mounting plate 18 and the fourth mounting plate 14 are all provided with a plurality of abdicating holes corresponding to the nail outlet positions of the automatic nailing gun 21, so that nails emitted by the automatic nailing gun 21 can be nailed into the plate, and the surface material covering the top surface edge of the plate and the plate are fixed together to complete the automatic nailing operation.

As shown in fig. 1, the automatic stapling gun 21 is driven by compressed air, and the specific structure can be a product existing on the market. According to the peripheral length of the plate and the standard spacing distance of the stacking nails, the automatic stacking nail guns 21 in corresponding quantity are arranged on each automatic stacking nail mechanism (each row).

As shown in fig. 1 and 5, the finished product blanking mechanism is mounted on the bottom surface of the workbench 5, and includes a baffle 8 and a baffle opening and closing driving assembly. The shutter opening and closing drive assembly comprises a link 49, a hinged seat 51, a first linear power element 48 and a second linear power element 9. The hinge base 51 and the first linear power element 48 are fixed to the bottom surface of the table 5 and located on opposite sides of the die slot body, respectively. The first linear power element 48 push rod is disposed vertically downward. One end of the second linear power element 9 is rotatably connected with the hinge base 51. The link 49 is L-shaped, one end of which is fixed to the push-out rod of the first linear power element 48, and the other end of which is rotatably connected to one end of the bottom surface of the baffle 8. The other end of the flap 8 is rotatably connected to the other end of the second linear power element 9 via a hinge shaft 50. The first linear power element 48 and the second linear power element 9 both adopt cylinders; when the two cylinders are pushed out, the baffle 8 descends and inclines; when the two cylinders retract, the baffle 8 abuts on the bottom surface of the table.

Under the driving of the first linear power element 48 and the second linear power element 9, the baffle plate 8 has two working positions, namely a blocking working position and a blanking working position; when the baffle 8 is in the blocking working position, the top surface of the baffle 8 is attached to the bottom surface of the workbench, and the baffle seals the bottom of the die groove body; when the fabric and the plate are placed in the die groove body, the fabric and the plate are supported by the baffle 8. When baffle 8 is in unloading operating position, baffle 8 and the bottom surface separation of workstation, and baffle 8 slope sets up, and sheet material and surface fabric are along 8 roll-offs to the finished product district that processes of slope, realize automatic unloading.

The working method of the pneumatic plane dowel equipment of the modular chair comprises the following specific steps:

step one, a single fabric 37 is sucked by the fabric feeding mechanism and moved to a die groove body of the workbench 5.

Step two, the sheet material feeding mechanism places the sheet material 38 on the die groove body, and the sheet material 38 presses the fabric 37 into the die groove body; the sheet material 38 is completely placed in the die groove body, and the edge of the sheet material is turned upwards to the outside of the die groove body under extrusion.

Thirdly, the station switching mechanism drives the plate dies on the workbench 5 to the nail stacking station; the four automatic stacking nail mechanisms drive the four rows of stacking gun nail devices to move towards the edges of the plate materials along the-X, the + X, the-Y and the + Y directions, and the four mounting plates push the higher fabric on the periphery of the plate materials to be flat to the edges of the top surfaces of the plate materials; in the process, the first mounting plate moves horizontally, then moves obliquely downwards, and finally moves horizontally for a section; the four rows of automatic setting nails are used for setting nails on the fabric and the sheet material at one time, so that the fabric and the sheet material are fixed.

And step four, extending the first linear power element 48 and the second linear power element 9 in the finished product blanking mechanism to enable the baffle plate 8 to turn downwards, and sliding the plate and the fabric which finish the tacking operation out along the baffle plate 8.

And step five, driving the workbench 5 to move to a feeding station by a station switching cylinder 10 in the station switching mechanism.

And sixthly, repeating the steps from one to five to realize continuous automatic tacking of the sheet material and the fabric.

Claims (8)

1. A modularized chair pneumatic plane nail stacking device comprises a base (1), a workbench (5), a station switching mechanism, a fabric feeding mechanism and an automatic nail stacking mechanism; the method is characterized in that: the workbench (5) is connected to the base (1) in a sliding manner; the station switching mechanism drives the workbench (5) to switch between a feeding station and a stacking station; a die groove body used for mounting the plate and the fabric (37) is formed in the workbench (5); the cross section of the die groove body corresponds to the cross section of the plate; the fabric feeding mechanism is used for placing the fabric on the workbench;

the automatic nail stacking mechanism comprises a first mounting plate (26), a second mounting plate (23), a third mounting plate (18) and a fourth mounting plate (14) which surround the nail stacking station; nailing gun mounting positions are arranged on the inner side edges of the first mounting plate (26), the second mounting plate (23), the third mounting plate (18) and the fourth mounting plate (14); the shapes of the four nail gun mounting positions correspond to the shapes of four edges of the plate respectively; each nail gun mounting position is provided with a plurality of automatic nail setting guns; the first mounting plate (26) is positioned between the feeding station and the stacking station; the second mounting plate (23), the third mounting plate (18) and the fourth mounting plate (14) are connected with the base (1) in a sliding manner and slide horizontally under the driving of the linear movement driving mechanism;

the first mounting plate (26) is connected with the base (1) through an inclined guide assembly; the inclined guide assembly comprises a sliding block (56), a limiting pin (13), a jacking spring (55) and an inclined guide seat (27); the sliding block (56) is connected to the base in a sliding manner; a limit pin (13) is fixed at the top of the sliding block (56); the first mounting plate (26) is connected to the limiting pin (13) in a sliding mode along a non-horizontal direction; the jacking spring (55) is arranged on the sliding block (56) and applies upward elastic force to the first mounting plate (26); the inclined guide seats (27) are all fixed on the base; the inclined guide seat (27) is provided with a guide surface facing downwards; in the process that the first mounting plate (26) slides towards the direction close to the staple station, the guide surface of the inclined guide seat (27) guides the first mounting plate (26) to reduce the height; the height of the first mounting plate (26) changes in the sliding process, so that the upturned fabric edge of the workbench cannot be blocked by the first mounting plate (26) when the work station is switched; the sliding block (56), the second mounting plate (23), the third mounting plate (18) and the fourth mounting plate (14) are driven by a power element to move; when the first mounting plate (26), the second mounting plate (23), the third mounting plate (18) and the fourth mounting plate (14) move inwards to the position above the tacking station, the upturned fabric in the die groove body of the workbench can be turned over to the edge of the top surface of the plate material, so that an automatic tacking gun can perform tacking operation;

the fabric feeding mechanism comprises a fabric feeding component, a fabric grabbing component and a dragging and feeding component; the fabric feeding assembly is arranged on one side of the feeding station and comprises a fabric storage table (36) and a lifting driving assembly; the fabric storage table (36) is connected to the base (1) in a sliding mode along the vertical direction and is driven by the lifting driving assembly to move up and down; the fabric storage table (36) is used for storing the stacked fabrics; the dragging feeding assembly is arranged right above the feeding station and comprises a fabric dragging plate (30) and a dragging driving assembly (7); the shell fabric planker (30) is connected to the base (1) in a sliding manner; the shell fabric planker (30) is driven by a dragging driving component (7); the fabric dragging plate (30) is provided with a plurality of fabric grabbing components facing the fabric feeding component; the fabric grabbing component is used for grabbing the fabric on the uppermost layer of the fabric storage table (36); the dragging and feeding assembly is used for driving the fabric grabbing assembly to drag the grabbed fabric to a die groove body of the workbench;

the fabric grabbing component comprises a negative pressure suction nozzle (32), a suction nozzle support (31), a movable backing plate (46) and a backing plate driving component; one end of the suction nozzle bracket (31) is fixed on the fabric planker (30), and the other end is fixed with a negative pressure suction nozzle (32) which is arranged downwards; the suction port of the negative pressure suction nozzle (32) is arranged downwards; the movable backing plate (46) is connected to the suction nozzle bracket (31) in a sliding way; the movable backing plate (46) is driven by the backing plate driving assembly and is provided with two working positions, namely a grabbing working position and a releasing working position, when the movable backing plate (46) is positioned at the grabbing working position, the movable backing plate (46) is positioned right below the negative pressure suction nozzle (32), and the suction force of the negative pressure suction nozzle (32) to the breathable fabric is improved; when the movable backing plate (46) is at the releasing working position, the movable backing plate (46) is staggered with the position right below the negative pressure suction nozzle (32).

2. The modular chair pneumatic flat stapler apparatus of claim 1, wherein: the die groove body adopts a through groove; a finished product discharging mechanism is arranged at the bottom of the workbench; the finished product blanking mechanism comprises a baffle (8) and a baffle opening and closing driving assembly; the baffle opening and closing driving assembly drives the baffle (8) to close the bottom of the die groove body or open the bottom of the die groove body, and supporting and automatic discharging of the fabric and the plate are achieved.

3. The modular chair pneumatic flat stapler apparatus of claim 2, wherein: the baffle opening and closing driving assembly comprises a connecting rod (49), a hinged seat (51), a first linear power element (48) and a second linear power element (9); the hinged seat (51) and the first linear power element (48) are fixed on the bottom surface of the workbench (5) and are respectively positioned on the opposite sides of the die groove body; the first linear power element (48) push rod is arranged vertically downwards; one end of the second linear power element (9) is rotationally connected with the hinge base (51); the connecting rod (49) is L-shaped, one end of the connecting rod is fixed with the pushing rod of the first linear power element (48), and the other end of the connecting rod is rotatably connected with one end of the bottom surface of the baffle (8); the other end of the baffle (8) is rotationally connected with the other end of the second linear power element (9).

4. The modular chair pneumatic flat stapler apparatus of claim 1, wherein: the modularized chair pneumatic plane staple equipment also comprises a plate material feeding mechanism; the plate material feed mechanism adopt an end effector as an industrial robot of the grabbing mechanism.

5. The modular chair pneumatic plane tacking apparatus as claimed in claim 1, wherein: the lifting driving assembly comprises a feeding screw rod (43) and a feeding motor (33); a vertically arranged feeding screw rod (43) is rotationally connected to the base (1); the fabric storage table (36) and the feeding screw rod (43) form a screw pair; the feed screw (43) is driven to rotate by a feed motor (33).

6. The modular chair pneumatic flat stapler apparatus of claim 1, wherein: the dragging driving assembly (7) comprises a pull-back spring (41), a dragging motor (6), a winding roller and a dragging belt; the material dragging motor (6) is fixed on the base (1) and is positioned on one side of the feeding station, which is far away from the fabric feeding assembly; a belt winding roller is fixed on the dragging motor (6); one end of the towing belt is wound on the winding roller, and the other end of the towing belt is fixed with the fabric planker (30); the pull-back spring (41) is sleeved on the fabric feeding guide rod (3), and two ends of the pull-back spring are respectively fixed with the base (1) and the fabric dragging plate (30); the pull-back spring (41) applies elastic force to the fabric planker (30) towards the side far away from the tape winding roller.

7. The modular chair pneumatic flat stapler apparatus of claim 1, wherein: the backing plate driving assembly comprises an electromagnet (44), a return spring (45) and a guide shaft (47); the guide shaft (47) is fixed at the bottom of the suction nozzle bracket (31); the vertical part of the L-shaped movable backing plate (46) is connected with the guide shaft (47) in a sliding way; the electromagnet (44) is arranged on the inner side of the negative pressure suction nozzle (32); the return spring (45) is sleeved on the guide shaft (47), and two ends of the return spring respectively abut against the movable base plate (46) and the electromagnet (44); the removable pad (46) can be subjected to the attractive force of an energized electromagnet (44).

8. The working method of the modular chair pneumatic plane dowel device of claim 1, wherein: the method comprises the following steps:

step one, a single fabric (37) is placed on a die groove body of a workbench (5) by a fabric feeding mechanism;

step two, the plate material feeding mechanism places the plate material (38) on the die groove body, and the plate material (38) presses the fabric (37) into the die groove body; the plate (38) is completely placed in the die groove body, and the edge of the fabric is upwards turned outside the die groove body under the extrusion;

thirdly, the station switching mechanism drives the workbench (5) to move to a nail stacking station; a first mounting plate (26), a second mounting plate (23), a third mounting plate (18) and a fourth mounting plate (14) in the automatic tacking mechanism move inwards to push the upturned fabric edges around the panel veneer to the top surface of the panel veneer; then, the respective movable staple guns synchronously nail the staples into the fabric and the plate;

step four, opening a baffle plate in the finished product blanking mechanism, and outputting the fabric and the plate material which finish the tacking operation from the bottom of the die groove body;

fifthly, the station switching mechanism drives the workbench (5) to move to a feeding station;

and sixthly, repeating the steps from one to five to realize continuous automatic tacking of the sheet material and the fabric.

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