CN109747215B

CN109747215B - Handle installation assembly line

Info

Publication number: CN109747215B
Application number: CN201910204755.6A
Authority: CN
Inventors: 江祥金; 江祥荣; 郑银常
Original assignee: Tianjin Xutengda Automation Equipment Co ltd
Current assignee: Tianjin Xutengda Automation Equipment Co ltd
Priority date: 2019-03-18
Filing date: 2019-03-18
Publication date: 2024-04-23
Anticipated expiration: 2039-03-18
Also published as: CN109747215A

Abstract

The invention provides a lifting handle installation assembly line, which comprises a paperboard conveying device and a lifting handle installation device, wherein a working panel is fixedly connected to a main frame; the handle mounting device comprises a lower inserting mechanism and a lower pulling mechanism, wherein the lower inserting mechanism comprises a lifting driving assembly and a bending assembly; the lifting driving assembly comprises a lifting platform, the lifting platform drives the two bending assemblies to lift respectively, and the bending assemblies comprise rotating shafts; the tail ends of the two rotating shafts are respectively provided with a lower inserting grabber, and the two lower inserting grabbers are respectively used for grabbing the end parts and the main body of the lifting handle; the two ends of the handle are turned downwards by the two rotating shafts; the work panel is provided with a through hole for the handle to penetrate through, and the pull-down mechanism comprises two pull-down grippers which are driven to lift. The handle installation assembly line provided by the invention simulates the manual handle installation process, and reduces the rate of defective products.

Description

Handle installation assembly line

Technical Field

The invention belongs to the field of carton manufacturing, and particularly relates to a handle installation assembly line.

Background

In order to facilitate carrying of the carton gift box, a handle 8 is generally arranged on the carton gift box.

As shown in fig. 1 and 2, a swing cover 72, an inner sealing plate 73 and two dust wings 74 are formed at an upper end opening of the box body 71 of the carton. Therefore, according to the requirements of the process flow, after the indentation of the paper box gift box raw material paper board 7 is completed, the handle 8 is also arranged on the shaking cover 72. An upper mounting hole through which two ends of the handle 8 penetrate is formed in the swing cover 72, two bottom plates are formed on two sides of the upper mounting hole in a cutting mode, and the first bottom plate 721 and the second bottom plate 722 are folded to the back face of the swing cover 72 in a mirror image mode, so that the lower mounting hole and the upper mounting hole on the bottom plates are aligned; the swing cover 72 mounts the handle 8 through the bottom sheet and the upper and lower mounting holes by inserting the end portions 82 of both sides of the body 81 of the handle 8 into the swing cover 72 with both end portions 82 penetrating a set of upper and lower mounting holes, respectively, while the body 81 of the handle 8 remains on the upper side of the swing cover 72.

The existing handle installation assembly line is still the main stream of the market due to the fact that the rate of defective products is high.

Disclosure of Invention

In view of the above, the present invention aims to provide a handle installation assembly line to solve the problem that the handle cannot be installed correctly.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

The utility model provides a handle installation assembly line, includes cardboard conveyor and handle installation device, its characterized in that: a working panel is fixedly connected to the main frame and is used for supporting the swing cover; the paper board conveying device comprises a main conveying mechanism, wherein the main conveying mechanism pushes the paper board, enables the swing cover to slide on the working panel and conveys the paper board to the handle mounting device; the handle mounting device comprises a lower inserting mechanism and a lower pulling mechanism, wherein the lower inserting mechanism comprises a lifting driving assembly and a bending assembly; the lifting driving assembly comprises a lifting platform, and the lifting platform is driven to lift; the two bending components are arranged on the lifting platform and comprise rotating shafts; the two ends of the rotating shafts are respectively provided with a lower inserting gripper, the two lower inserting grippers are respectively used for gripping the end parts and the main body of the lifting handle, and part of the end parts of the two ends of the lifting handle are exposed from the air claws of the lower inserting grippers; the two rotating shafts are respectively driven to rotate by 90 degrees in opposite directions and are used for turning down the two ends of the lifting handle; the work panel is provided with a through hole for the handle to penetrate through, the pull-down mechanism comprises two pull-down grippers, the two pull-down grippers are respectively positioned right below the two through holes, and the two pull-down grippers are driven to lift and respectively clamp the two ends of the handle to penetrate through the paperboard.

Further, the paperboard conveying device further comprises a negative alignment mechanism, wherein the negative alignment mechanism comprises a first folding assembly and a second folding assembly; the first turnover assembly comprises a downward turnover block and a first lifter, the two downward turnover blocks are driven by the first lifter to lift, and a first punching hole for the downward turnover block to penetrate is formed in the working panel; the second turnover assembly comprises a lower shifting assembly and a shifting assembly, the working panel is provided with a sliding hole, and the lower shifting assembly presses the second bottom plate into the sliding hole; the poking assembly comprises a poking plate and a poking driver, wherein the poking plate is flush with the working panel and slides in the sliding hole under the driving of the poking driver.

Further, the paperboard conveying device further comprises a hedging component, the hedging component comprises punching blocks and a second lifter, the second lifter drives the two punching blocks to lift, and two second punching openings for punching to penetrate through are formed in the working panel.

Further, a paperboard feeding device is arranged at the upstream of the paperboard conveying device, and the paperboard feeding device comprises a first conveying mechanism and a second conveying mechanism which are connected with each other; the first conveying mechanism is positioned at the upstream of the second conveying mechanism, and the first conveying mechanism is higher than the second conveying mechanism, and a drop is formed between the first conveying mechanism and the second conveying mechanism; the second conveying mechanism comprises a second frame and a second traction piece, the second frame is fixedly connected with a material limiting baffle plate on the upper side of the second traction piece, and an outlet is formed between the vertically arranged material limiting baffle plate and the second traction piece.

Further, the paperboard conveying device comprises a feeding mechanism, wherein the feeding mechanism is positioned above the starting end of the main conveying mechanism; the feeding mechanism comprises an X-axis conveying assembly, a material pulling assembly and a feeding driver; the X-axis conveying assembly comprises a feeding platform, the feeding driver drives the feeding platform to translate, the pulling assembly is arranged on the feeding platform and used for clamping the paper board sent out by the second conveying mechanism and pulling the paper board to the upper part of the starting end of the main conveying mechanism.

Further, a handle feeding device is arranged at the upstream of the handle mounting device; the lifting handle feeding device comprises a bin box and a discharging mechanism, wherein the bottom of the bin box, which is close to the downstream side, is provided with a discharging hole, the bottom surface of the bin box is provided with a slideway hole, and the slideway hole and the discharging hole are mutually communicated at the side, which is close to the downstream side; the delivery mechanism comprises a distributor, a retractor and a retractor board, wherein the retractor is driven by the distributor to reciprocate along the X axis between the upstream and the downstream; the two draw hook boards are driven by the draw hook device to move along the Y axis in the opposite direction or back to move, so that the two draw hook boards have two states of contraction and expansion, the two draw hook boards in the contraction state enter the bin box from the slideway port, and the two draw hook boards in the expansion state leave the bin box from the discharge port.

Further, a bin lifting mechanism is arranged below the bin box and comprises a supporting plate and a bin supporting driver, the supporting plate supports the bin box, and the supporting plate is driven by the bin supporting driver and drives the bin box to lift.

Further, a separation and cutting device is arranged between the handle installation device and the handle feeding device; the separating and cutting device comprises a bearing plate and a cutting mechanism, and the cutting mechanism comprises a fixed seat, a cutter and a cutting driver; the fixed seat is driven by the cutting driver to lift, and the two cutters are respectively fixedly connected to two sides of the fixed seat; the bottom surface of the fixed seat is fixedly connected with a front guide pin and a rear guide pin, and the front guide pin and the rear guide pin are respectively provided with a row; the bottoms of the front guide pin and the rear guide pin on the adjacent sides are provided with chamfers, and the tail end of the bearing plate is provided with avoidance holes for avoiding the cutters and the guide pins.

Furthermore, the bearing plate sequentially comprises an initial part and a guide plate part from upstream to downstream, wherein charging spaces are formed on two sides of the initial part and used for placing the drag hook plates in two expansion states, and the width of the guide plate part is gradually prolonged from upstream to downstream.

Further, the separation and cutting device comprises a forward pushing mechanism, wherein the forward pushing mechanism comprises a toothed plate, a pressing driver and a forward pushing driver; the gear shaping plate comprises a plate body and gear shaping teeth, wherein the gear shaping teeth are uniformly and vertically fixedly connected to two sides of the plate body; the gear inserting plate is driven by the material pressing driver to lift, and the gear inserting plate is driven by the forward pushing driver to advance downstream along the bearing plate.

Compared with the prior art, the handle installation assembly line has the following advantages:

(1) According to the handle installation assembly line, the process of manually installing the handles is completely simulated through the two procedures of inserting and pulling down, so that the handles are ensured to be in place, and the rate of defective products is reduced.

(2) According to the paperboard conveying device, the downward turning block punches the two bottom plates, so that the two bottom plates are turned downward, and the first bottom plate automatically and further turns over to the back of the shaking cover along with the advancing of the paperboard; when the paper board is intercepted by the second positioning component, at the same time, the second bottom plate is pressed down by the elastic sheet, the second bottom plate is further folded to the back of the shake cover through the stirring of the stirring plate, and finally, two groups of upper and lower mounting holes are punched through the punching block.

(3) According to the paperboard feeding device, the paperboard is placed on the second conveying mechanism and is positioned between the drop height and the limiting baffle plate; the part of the paperboards stacked in the second conveying mechanism, which is higher than the drop, is gradually and obliquely stacked on the first conveying mechanism, namely, each paperboard of the part is pressed on the lower paperboard, and the paperboard is slightly closer to the upstream than the paperboard pressed by the lower paperboard; therefore, the friction force between the lowest layer of paper board and the second traction piece is increased due to the stacked paper board formed by the fall, and the slipping phenomenon is prevented.

(4) According to the handle feeding device, the draw hook plate is enabled to enter and exit the bin box through expansion or contraction of the draw hook plate, and the row handle at the bottom of the bin box is brought out of the bin box.

(5) According to the bin lifting mechanism, the bin box is lifted, so that the drag hook plate enters the bin box from the avoiding hole from bottom to top, and the problem that the drag hook plate enters the bin box along the X axis through the discharge hole and possibly interferes with the lifting handle is solved.

(6) According to the separating and cutting device, the front side and the rear side of the handle are fixed through the front guide pin and the rear guide pin, the lower ends of the guide pins are respectively provided with the chamfer, and the guide pins have a guide effect in the descending process of the front guide pin and the rear guide pin, so that the handle is accurately positioned.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of a paperboard to be processed as described in the background;

FIG. 2 is a schematic view of a row handle as described in the background;

FIG. 3 is an overall schematic view of a handle assembly line according to an embodiment of the present invention;

FIG. 4 is a front view of a paperboard feeding device according to an embodiment of the present invention;

FIG. 5 is an axial side view of a paperboard feeding device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a spacing adjustment mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic view of a base and horizontal column installation according to an embodiment of the present invention;

FIG. 8 is a schematic view of a paperboard conveying apparatus according to an embodiment of the invention;

FIG. 9 is a schematic diagram of a feeding mechanism according to an embodiment of the invention;

FIG. 10 is a schematic diagram of a mechanism at the beginning end of a mainframe rack according to an embodiment of the invention;

Fig. 11 is a schematic view of a first folding assembly according to an embodiment of the invention;

fig. 12 is a schematic view of a second folding assembly and a counter-punching assembly according to an embodiment of the invention;

FIG. 13 is a schematic view of a handle feeding device, a separating and cutting device and a downward inserting mechanism according to an embodiment of the invention;

fig. 14 is a schematic view of a handle feeding device according to an embodiment of the present invention;

FIG. 15 is a schematic view of a tapping mechanism and a carrier plate structure according to an embodiment of the invention;

FIG. 16 is a schematic view of a separating and cutting device according to an embodiment of the invention;

FIG. 17 is a schematic view of a down-feed mechanism according to an embodiment of the invention;

FIG. 18 is a schematic view of a through-opening and a third positioning member according to an embodiment of the invention;

fig. 19 is a schematic view of a pull-down mechanism according to an embodiment of the invention.

Note that: due to the shielding structure, part of the frame is hidden in the figure.

Reference numerals illustrate:

1. A paperboard feeding device; 11. a first conveying mechanism; 111. a first frame; 112. a first traction member; 113. a fixed baffle; 114. a movable baffle; 115. a sleeve; 116. a first mounting plate; 117. a second mounting plate; 12. a second conveying mechanism; 121. a second frame; 122. a second traction member; 123. a material limiting baffle plate; 124. a reference baffle; 125. an adjustable baffle; 126. a tip plate; 127. a base; 128. a horizontal column; 13. a spacing adjustment mechanism; 131. a driving shaft; 132. a driving rod; 133. turning over the rod; 2. a cardboard delivery device; 21. a feeding mechanism; 211. an X-axis transport assembly; 212. a pulling component; 213. a feeding driver; 22. a main transmission mechanism; 221. a chain link; 222. pushing pins; 23. a wing plate separating mechanism; 231. an inner sealing plate lower guide block; 232. swinging the upper guide plate; 233. a lower dust wing lower guide plate; 24. a negative alignment mechanism; 241. a first folding assembly; 2411. a first positioning member; 2412. turning down the block; 2413. a first lifter; 242. a second folding assembly; 2421. a down-shifting assembly; 2422. the assembly is stirred; 24221. a toggle plate; 24222. a toggle driver; 243. an opposite punching assembly; 2431. a second positioning member; 2432. punching blocks; 2433. a second lifter; 3. a handle feeding device; 31. a bin box; 311. flanging; 312. a discharge port; 313. a slide way opening; 314. a stop bar; 32. a material supplementing mechanism; 321. a transverse moving frame; 322. a traversing driver; 33. a bin lifting mechanism; 331. a supporting plate; 332. a bin driver; 34. a discharging mechanism; 341. a distributor; 342. a retractor; 343. a hook plate; 3431. a seat; 3432. a vertical portion; 3433. a drag hook part; 4. separating and cutting the device; 41. a carrying plate; 411. an initial section; 412. a guide plate portion; 42. a push-forward mechanism; 421. a tooth inserting plate; 422. a pressing driver; 423. a push-forward driver; 43. a cutting mechanism; 431. a fixing seat; 432. a cutter; 433. a cutting driver; 434. a leading pin; 435. a rear guide pin; 436. a pressing plate; 437. a piston shaft; 438. an elastic member; 44. a feed mechanism; 441. a front conveying frame; 442. a feed-forward driver; 443. advancing the gripper; 5. a handle mounting device; 51. a lower insertion mechanism; 511. a lifting driving assembly; 5111. a lifting platform; 5112. inserting a lifting driver downwards; 512. an adjustment assembly; 5121. a guide shaft; 5122. a sliding platform; 5123. a shaft sleeve; 513. a bending assembly; 5131. a cam member; 51311. a cam groove seat; 51312. a follower; 51313. a rotating arm; 5132. a rotating shaft; 514. inserting a grabber; 52. a pull-down mechanism; 521. a pull-down lift driver; 522. pulling down the gripper; 53. a third positioning member; 6. a main frame; 61. a main baffle; 62. a secondary baffle; 63. a lining plate; 64. a hairbrush pressing bar; 65. a material supporting component; 651. a material supporting plate; 652. an adjusting device; 66. pressing strips; 661. an upper limit part; 662. a homing part; 663. a lower limit part; 67. a guide panel; 68. a work panel; 7. a paperboard; 71. a case; 72. shaking the cover; 721. a first backsheet; 722. a second backsheet; 73. an inner sealing plate; 74. a dust-proof wing; 8. a handle; 81. a main body; 82. an end portion.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

A handle installation assembly line, as shown in figure 3, comprises a paperboard feeding device 1, a paperboard conveying device 2, a handle feeding device 3 and a handle installation device 5. Wherein, cardboard conveyor 2, handle material feeding unit 3 and handle installation device 5 are all installed on main frame 6.

The paperboard feeding device 1 is installed at a paperboard unfolding mechanism side for transporting a carton (hereinafter, simply referred to as paperboard) folded into a paperboard state. The paperboard feeding device 1 comprises a first conveying mechanism 11 and a second conveying mechanism 12 which are connected, and the first conveying mechanism 11 and the second conveying mechanism 12 both convey the paperboard along the X axis.

As shown in fig. 4 and 5, the first conveying mechanism 11 is located upstream of the second conveying mechanism 12, and the first conveying mechanism 11 is higher than the second conveying mechanism 12, so that a drop is formed between the first conveying mechanism 11 and the second conveying mechanism 12. The first conveying mechanism 11 includes a first frame 111 and a first traction member 112. As a belt for the first traction member 112. Is rotatably coupled to the first frame 111 by a pulley. The second conveying mechanism 12 includes a second frame 121 and a second traction member 122, and a belt as the second traction member 122 is rotatably connected to the second frame 121 by a pulley. The second frame 121 is fixedly connected with a limiting baffle 123 at the upper side of the second traction piece 122, and an outlet for a paperboard to slide out is reserved between the vertically arranged limiting baffle 123 and the second traction piece 122. Placing the cardboard on the second conveying mechanism 12 between the drop height and the material limiting baffle 123; the portion of the sheets stacked above the drop height in the second conveying mechanism 12 is gradually inclined onto the first conveying mechanism 11, i.e., each sheet of the portion is pressed against the lower one and is slightly closer upstream than the lower pressed sheet. In this way, by the operation of the first conveying mechanism 11, the sheet moves above the drop height and abuts against the material limiting shutter 123, and by the operation of the second conveying mechanism 12, the sheet positioned at the lowermost side is drawn out from the sheet stack through the opening, and is conveyed to the downstream sheet expanding mechanism.

As shown in fig. 6, the first frame 111 is provided with a fixed baffle 113 and a movable baffle 114 on both sides of the first traction member 112. The fixed baffle 113 is fixedly connected to the first frame 111. The flapper 114 is mounted on the first frame 111 by two spacing adjustment mechanisms 13. The first frame 111 is fixedly connected with a sleeve 115 at one side far away from the fixed baffle 113, two through holes are formed in one side, close to the first frame 111, of the sleeve 115, and the two interval adjusting mechanisms 13 are respectively arranged at the two through holes. The pitch adjustment mechanism 13 includes a driving shaft 131, a driving lever 132, and a flipping lever 133. The driving shaft 131 is rotatably connected in the sleeve 115 through a bearing, and the two pitch adjustment mechanisms 13 share one driving shaft 131. The sleeve 115 is fixedly connected with a first mounting plate 116 and a second mounting plate 117 respectively at two sides of each through hole, one end of a driving rod 132 is hinged on the second mounting plate 117, a worm wheel is fixedly connected with one end of the driving rod 132 hinged with the second mounting plate 117, and a worm part meshed with the worm wheel is formed on the driving shaft 131, so that the driving rod 132 is driven to horizontally rotate by the rotation of the driving shaft 131. The first mounting plate 116 is provided with a straight hole along the length direction of the sleeve 115, the initial end of the turnover rod 133 slides along the straight hole through the rotating wheel, the middle part of the turnover rod 133 is hinged with the tail end of the driving rod 132, and the tail end of the turnover rod 133 is hinged on the outer side of the movable baffle 114, so that the turnover rod 133 is driven to turn through the driving rod 132, the distance between the movable baffle 114 and the sleeve 115 is adjusted, and the distance between the movable baffle 114 and the fixed baffle 113 is also adjusted.

As shown in fig. 7, the second frame 121 is provided with a reference baffle 124 and an adjustable baffle 125 on both sides of the second traction member 122, respectively. The reference baffle 124 is fixedly connected with the second frame 121 and is coplanar with the fixed baffle 113. The adjustable baffle 125 is installed on the second rack 121 through the base 127, the lower end of the base 127 is fixedly connected on the second rack 121, a through hole and an opening are formed in the upper end of the base 127, the horizontally arranged through hole penetrates through the base 127, the opening extends from the top surface of the base 127 to the inner wall of the through hole, and the opening divides the upper end of the base 127 into a left part and a right part; the horizontal column 128 penetrates through the base 127 through the through hole, and the tail end of the horizontal column 128 is fixedly connected with the adjustable baffle 125; the upper end of the base 127 is provided with a bolt which penetrates through the left part and is in threaded connection with the right part; so that the upper end of the base 127 is elastically deformed by the bolts, and the left and right parts approach each other and drive the through holes to contract, holding the horizontal column 128 tightly.

As shown in fig. 8, the sheet conveying apparatus 2 includes a loading mechanism 21, a main conveying mechanism 22, a wing plate separating mechanism 23, and a negative alignment mechanism 24.

As shown in fig. 9, the feeding mechanism 21 is mounted at the starting end of the main frame 6 through a bracket, and the feeding device is located downstream of the cardboard feeding device 1. The feeding mechanism 21 comprises an X-axis conveying assembly 211, a pulling assembly 212 and a feeding driver 213. The X-axis conveying assembly 211 comprises a feeding platform which is slidably connected with the main frame 6 through a guide rail and is erected right above the starting end of the main conveying mechanism 22. The two material pulling components 212 are arranged on the bottom surface of the feeding platform, the material pulling components 212 comprise horizontally arranged material pulling pneumatic fingers, the cylinder bodies of the two material pulling pneumatic fingers are fixedly connected with two ends of the bottom surface of the feeding platform, and the air claws of the two material pulling pneumatic fingers face the paperboard feeding device 1. The feeding driver 213 is a synchronous belt component, and the feeding driver 213 drives the feeding platform to slide along the guide rail. The synchronous belt assembly adopts the prior art, and this embodiment is not described in detail. When the edges of the cardboard emerge from the end of the second conveyor 12, two pulling assemblies 212 grip the edges of the cardboard and pull the cardboard over the main conveyor 22 by a feeding drive 213 and release the cardboard after moving it into place, causing it to drop into an initial position at the beginning of the main conveyor 22.

In addition, in order to be convenient for draw material subassembly 212 to pull out the cardboard from cardboard material feeding unit 1 end, second frame 121 is at the low reaches rigid coupling has terminal board 126, and terminal board 126 opens in the one side that is close to feed mechanism 21 has the mouth of dodging, dodges mouthful and draw material pneumatic finger one-to-one to be convenient for draw material pneumatic finger and draw the cardboard away.

As shown in connection with fig. 10, the main transport mechanism 22 is disposed along the Y-axis and has a height lower than the board feeding device 1. In order to ensure that the sheet falls from above to the initial position of the main conveyor, the main frame 6 is provided with a main baffle 61 and a secondary baffle 62. The main baffle 61 is fixedly connected to the side, far away from the paperboard feeding device 1, of the main transmission mechanism 22, and the auxiliary baffle 62 is detachably and fixedly connected to the side, close to the paperboard feeding device 1, of the main transmission mechanism. The dropped paperboard is positioned left and right by the secondary baffle 62 and the initiative.

The main conveying mechanism is two chain transmission mechanisms which are arranged in a mirror image mode, the chain links 221 of the chain transmission mechanisms are fixedly connected with push pins 222, and the push pins 222 which synchronously move are abutted against the tail end of the paperboard through rotation of the chain transmission mechanisms to drive the paperboard to move forwards.

The main frame 6 is fixedly connected with a lining board 63 between two chain driving machines, the lining board 63 is used for bearing a box body part of the paperboard, and the paperboard is driven to slide on the lining board 63 through push pins 222 at two sides. In order to ensure the stability of the paper board, the main frame 6 is fixedly connected with a hairbrush pressing bar 64 in the middle, and the two hairbrush pressing bars 64 are positioned right above the lining board 63, so that the box body part of the paper board is pressed on the lining board 63.

In order to prevent the cardboard from sliding off the swing cover side, the main frame 6 is provided with a stock assembly 65 at the start end, the stock assembly 65 comprising a stock plate 651 and an adjusting device 652. The material supporting plate 651 is horizontally arranged on one side of the chain transmission mechanism close to the paperboard feeding device 1 and is used for supporting the dustproof wings and the inner sealing plate on the rear side of the paperboard. The cylinder body of the adjusting piston cylinder serving as the adjusting device 652 is fixedly connected to the main frame 6, and the piston rod of the adjusting piston cylinder is fixedly connected with the inner sealing plate, so that the inner sealing plate is driven to translate along the Y axis to support paperboards with different specifications.

The flap separating mechanism 23 includes, in order from upstream to downstream, an inner seal plate lower guide 231, a swing cover upper guide 232, and a lower dust flap lower guide 233.

The inner sealing plate lower guide block 231 is fixedly connected to the bracket, the inner sealing plate is provided with a front lower guide surface, the front lower guide surface is positioned in the Y-axis direction of the extending part of the rear dust-proof wing of the inner sealing plate of the paperboard, and the front lower guide surface gradually extends downwards in an inclined manner from upstream to downstream; thus, when the cardboard passes through the inner seal plate lower guide 231, the inner seal plate is pressed down by the inner seal plate lower guide 231, so that the inner seal plate is folded down along the crease.

Swing cover upper guide 232 includes a front edge portion, a beveled edge portion, and a rear edge portion. The leading portion is disposed horizontally and upstream of the horizontally disposed trailing portion, with the leading portion being lower than the trailing portion and the beveled portion extending from the distal end of the leading portion to the beginning of the trailing portion. Wherein the front edge part is used for supporting the shaking cover of the paper board at the initial position. As the cardboard advances, the beveled edge portion turns the flap upward along the crease, separating the flap from the lower dust flap on the underside. A working panel 68 is fixedly connected to the main frame 6, and the working panel 68, the front edge part and the lining plate 63 are positioned on the same horizontal plane; so that the working panel 68, the front edge portion and the backing plate 63 all serve to hold the cardboard.

The lower wing lower guide 233 is fixedly attached to the working panel 68, the lower wing lower guide 233 is located in the Y-axis direction of the wing pressed by the swing cover, and the lower wing lower guide 233 is located in the X-axis direction of the rear edge portion. Thus, when the end of the swing cover is lifted by the beveled edge portion, the lower wing lower guide 233 comes into contact with the lower wing that was originally pressed by the swing cover as the sheet advances, and presses the lower wing down along the fold.

The working panel 68 is fixedly connected with a pressing bar 66, the pressing bar 66 comprises an upper limit part 661, a homing part 662 and a lower limit part 663, the upper limit part 661 is horizontally arranged on the upper side of the swing cover upper guide plate 232, the lower limit part 663 is positioned at the downstream of the upper limit part 661, the lower limit part 663 is lower than the upper limit part 661, and a through groove is formed between the lower limit part 663 and the working panel 68; and the homing portion 662 extends obliquely downward from the end of the upper limit portion 661 to the end of the lower limit portion 663. When the swing cover slides out of the rear edge portion, through contact with the homing portion 662, the swing cover gradually folds down along the crease and eventually falls onto the work panel 68, while the swing cover tip is inserted into and slides along the through slot.

The bottom surface of the working panel 68 is fixedly connected with a guide panel 67, and the guide panel 67 comprises a guide part and a holding part. The guide part extends to the initial end of the holding part along an arc shape, and the inner sealing plate and the lower dust-proof wing gradually continue to downwards turn over after entering the guide part. The vertically disposed retaining portion is located on the side of the work panel 68 adjacent the main transfer mechanism 22 such that the retaining portion retains the inner seal plate and lower dust flaps in a folded over condition and does not interfere with the various devices on the work panel 68.

As shown in connection with fig. 11 and 12, the backsheet alignment mechanism 24 includes a first flip assembly 241, a second flip assembly 242, and an opposite punch assembly 243.

The first turndown assembly 241 includes a first positioning member 2411, a turndown block 2412 and a first lifter 2413. The first positioning part 2411 is installed downstream of the turndown block 2412, the first positioning part 2411 includes a first ram, and the first ram is driven to rise and fall and is pressed on the working panel 68 after falling, and stops the cardboard by blocking the advancing path of the cardboard while the main transmission mechanism 22 is stopped; so that the two bottom plates of the swing cover are stopped just below the two turndown blocks 2412, respectively. A first piston cylinder as a first lifter 2413, driving the two turndown blocks 2412 to lift; and the working panel 68 is provided with a first punching opening for the turndown block 2412 to pass through. Thus, by punching the two turndown blocks 2412, the two bottom sheets are turned down along the crease and penetrate the first notching.

Due to the difference in the crease positions of the two bottom sheets, as the main conveying mechanism 22 continues to advance, the first bottom sheet is turned over to the back of the swing cover while being moved again onto the working panel 68 through the first notching side wall; the second film is reversed from the first film and relocated to the front of the swing cover.

The second folding assembly 242 includes a dial assembly 2421 and a toggle assembly 2422. The work panel 68 has a sliding aperture where the dial down assembly 2421 and the dial up assembly 2422 are both mounted.

The lower shifting component 2421 comprises an elastic piece which is obliquely arranged, the elastic piece is fixedly connected to the mounting frame, one end of the elastic piece is a free end, the free end is positioned at the downstream of the mounting point of the elastic piece and the mounting frame, and the free end extends into the sliding hole. Thus, when the second bottom sheet of the cardboard is moved to the dial-down assembly 2421, the free end of the spring presses down the second bottom sheet, causing the second bottom sheet to fold down along the crease. In addition, the spring plate may be hinged to the mounting frame, and the free end may be extended into the sliding hole by self-weight or by the elastic member 438.

The toggle assembly 2422 includes a toggle plate 24221 and a toggle actuator 24222. The cylinder body of the poking piston cylinder serving as the poking driver 24222 is fixedly connected to the main frame 6, and the piston rod of the poking piston cylinder is fixedly connected with the poking plate 24221. Thus, toggle plate 24221 is flush with work panel 68 and slides within the slide aperture under the drive of toggle actuator 24222. Thus, when the second bottom sheet of the cardboard is folded by the lower pulling component 2421, the pulling plate 24221 moves from the upstream end of the sliding hole to the downstream end of the sliding hole, and impacts the second bottom sheet in the process, so that the second bottom sheet is completely folded.

The hedging assembly 243 includes a second positioning member 2431, a punching block 2432, and a second lifter 2433. A second positioning member 2431 is installed downstream of the punching block 2432, the second positioning member 2431 including a second ram which is driven up and down and is pressed against the work panel 68 after being lowered, stopping the cardboard by blocking the advancing path of the cardboard while the main conveying mechanism 22 is stopped; so that the two bottom plates of the swing cover are respectively stopped under the two punching blocks 2432.

A second piston cylinder as a second lifter 2433 drives the two punching blocks 2432 to lift; and a second punch through which punch 2432 passes is formed on work panel 68. Two second notching openings, one located on the working panel 68 and the other located on the toggle plate 24221. Thus, by punching the two punching blocks 2432, the two sets of upper and lower mounting holes are simultaneously penetrated by the punching blocks 2432.

Thus, when the paper board is intercepted by the first positioning component 2411, the downward turning block 2412 presses the two bottom sheets, so that the two bottom sheets are turned downward, and the first bottom sheet is automatically turned over to the back of the shake cover further along with the advancing of the paper board; when the paper board is intercepted by the second positioning component 2431, at the same time, the second bottom plate is pressed down by the elastic sheet, the second bottom plate is further folded to the back of the shake cover through the stirring of the stirring plate 24221, and finally, two groups of upper and lower mounting holes are punched through the punching block 2432. The second folding assembly 242 may be combined with the opposite-impact assembly 243 as in the above embodiment, or may be separately provided.

Referring to fig. 13, the handle feeding device 3 is installed on the end side of the main conveying mechanism 22 by a stand. The handle feeding device 3 comprises a bin box 31, a feeding mechanism 32, a bin lifting mechanism 33 and a bin discharging mechanism 34.

As shown in connection with fig. 14, the magazine 31 is used for storing row handles. The bin box 31 is uncovered, so that a feed inlet is formed at the upper end of the bin box 31. In order to facilitate feeding from the feeding port, the bin box 31 is provided with a discharging port on one side close to the main conveying mechanism 22 and one side far from the main conveying mechanism 22; the discharge opening extends vertically downward from the top of the magazine 31 to the middle of the magazine 31. And the flanges 311 are formed on the upper end of the bin box 31 by extending obliquely outward. The bottom of the side, close to the main conveying mechanism 22, of the bin box 31 is provided with a discharge port 312, the bottom surface of the bin box 31 is provided with a slide way port 313, and the slide way port 313 and the discharge port 312 are communicated with each other at the side, close to the main conveying mechanism 22.

As shown in fig. 15, the feeding mechanism 32 includes a traverse frame 321 and a traverse driver 322. The transverse moving frame 321 is connected with the vertical frame in a sliding way through a guide rail. The cylinder body of the traversing piston cylinder serving as the traversing driver 322 is fixedly connected to the vertical frame, and the piston rod of the traversing piston cylinder is fixedly connected with the traversing frame 321 through the avoiding plate, so that the traversing driver 322 drives the traversing frame 321 to move along the Y-axis direction. The transverse moving frame 321 is provided with a plurality of mounting openings, the bin box 31 is sleeved in the mounting openings from top to bottom, and the bin box 31 is fixedly connected with a stop bar 314 arranged along the X axis on the side surface; after the middle part of the bin box 31 is inserted into the mounting opening, the stop bar 314 is abutted with the upper end surface of the mounting opening, so that the bin box 31 is ensured not to slide down continuously.

The discharging mechanism 34 is mounted on the stand and is located directly below the magazine 31. The different magazine 31 is associated with the lower deck 34 by driving the traverse actuator 322. The discharging mechanism 34 includes a dispenser 341, a retractor 342, and a retractor plate 343. The distributor 341 is a distributing rodless cylinder arranged along the X axis; the retractor 342 is mounted on the slide of the dispensing rodless cylinder such that the retractor 342 is driven to and fro between the magazine 31 and the handle mounting means 5. The retractor 342 is a retractor pneumatic finger, and two retractor plates 343 arranged in mirror image are respectively fixedly connected to two parallel clamping jaws of the retractor 342, so that the two retractor plates 343 are driven to move along the Y axis in opposite directions or back to back, and the two retractor plates 343 have two states of contraction and expansion. The hook plate 343 includes a seat portion 3431, a vertical portion 3432, and a hook portion 3433. The two seat parts 3431 are fixedly connected on the parallel clamping jaw, the two vertical parts 3432 are respectively formed by extending upwards vertically from one side adjacent to the two seat plates, and the upper ends of the two drag hook parts 3433 are respectively formed by extending towards one side far away from the other vertical part 3432.

The two bin lifting mechanisms 33 are located below the bin box 31 and are respectively arranged on two sides of the bin discharging mechanism 34. The lift mechanism 33 includes a pallet 331 and a pallet driver 332. The cylinder body of the cylinder body serving as the bin supporting driver 332 is fixedly connected to the main frame 6, the piston rod of the cylinder body is fixedly connected with the supporting plate 331, and the supporting plate 331 supports the bin box 31 and drives the bin box 31 to lift.

The bin box 31 is lifted by the bin lifting mechanism 33, and the two draw hook plates 343 are driven by the distributor 341 to move to the position right below the bin box 31; the bin lifting mechanism 33 is contracted to enable the bin box 31 to descend, and simultaneously, two hook plates 343 in a contracted state extend into the bin box 31 from the slideway port 313; the two draw hooks are driven by the draw hook device 342 to move oppositely, so that the two draw hook plates 343 are in an expansion state, the two draw hook plates 343 are propped against the end part of the lowest layer of handles, the handles are driven by the distributor 341 to leave the bin box 31 from the discharge hole 312, and the handles above the uppermost layer of handles are blocked by the wall surface on the upper side of the discharge hole 312, so that the handles on the upper side are prevented from being carried out.

As shown in connection with fig. 16, the main frame 6 is mounted with a separation and cutting device 4 downstream of the discharging mechanism 34, and the separation and cutting device 4 includes a carrier plate 41, a forward pushing mechanism 42, and a cutting mechanism 43.

The bearing plate 41 is fixedly connected with the downstream of the discharging mechanism 34 along the X-axis direction through the vertical frame, and the top surface of the bearing plate 41 is level with the drag hook part 3433. The carrier plate 41 includes an initial portion 411 and a guide plate portion 412 in this order from upstream to downstream. The initial portion 411 is formed with loading spaces at both sides thereof, and when the draw hook plate 343 in an expanded state is moved to the distal end, the two draw hook plates 343 are respectively positioned at both sides of the initial portion 411 and the handle is placed on the initial portion 411. The guide plate portion 412 is fixedly connected downstream of the initial portion 411, and the width of the guide plate portion 412 is gradually increased from upstream to downstream, so that when the handle is moved from the initial portion 411 to the guide plate portion 412 by the forward pushing mechanism 42, the handle is gradually straightened by the guide plate portion 412.

The two forward pushing mechanisms 42 are fixedly connected to the vertical frame and are positioned right above the bearing plate 41. The forward pushing mechanism 42 includes a pinion plate 421, a nip drive 422, and a forward pushing drive 423. A forward pushing cylinder as a forward pushing driver 423, the cylinder body of which is fixedly connected on the vertical frame, and the piston rod horizontally arranged of which is fixedly connected with a material pressing driver 422; the cylinder body of the pressing cylinder serving as the pressing driver 422 is fixedly connected to the piston rod of the forward pushing cylinder, and the vertically arranged piston rod of the pressing cylinder is fixedly connected with the inserting toothed plate 421. The gear inserting plate 421 comprises a plate body and gear shaping teeth, wherein the plate body is horizontally fixedly connected to the tail end of a piston rod of the material pressing cylinder, and the gear shaping teeth are uniformly and vertically fixedly connected to two sides of the plate body. Thus, the gear shaping plate 421 is lowered by the pressing driver 422, so that the gear shaping is inserted into the gap between the adjacent handles of the row of handles, and the gear shaping plate 421 and the row of handles are fixed; the row handle is pushed downstream along the carrier plate 41 by the forward push actuator 423. Two forward pushing mechanisms 42, wherein the forward pushing mechanism 42 located at the upstream is used for pushing the row of the initial parts 411 to the guide plate part 412, and the forward pushing mechanism 42 located at the downstream is used for pushing the row handle of the guide plate part 412 to the tail end of the guide plate part 412.

The cutter 43 is mounted on the end of the guide plate 412 by a stand. The cutting mechanism 43 includes a holder 431, a cutter 432, and a cutting driver 433. The cylinder body of the cutting cylinder as the cutting driver 433 is fixedly connected to the vertical frame, the piston rod of the cutting cylinder is fixedly connected with the horizontally arranged fixed seat 431, and the two cutters 432 are respectively fixedly connected to two sides of the fixed seat 431.

The bottom surface of the fixed seat 431 is fixedly connected with two guide pins, namely a front guide pin 434 and a rear guide pin 435, the front guide pin 434 and the rear guide pin 435 are respectively provided with a row, and the front guide pin 434 and the rear guide pin 435 which are adjacent are arranged in the same row. Both the front guide pin 434 and the rear guide pin 435 are formed with chamfers at the bottoms of the adjacent sides, and the front guide pin 434 is longer than the rear guide pin 435.

The bottom surface of the fixed seat 431 is provided with a pressing plate 436 through a piston shaft 437. The bolt as the piston shaft 437 is provided with a bolt head arranged in a countersunk hole in the fixed seat 431, and a screw rod extends out of the bottom surface of the fixed seat 431; so that the piston shaft 437 is telescopically arranged on the bottom surface of the fixed seat 431 and radially fixed with the fixed seat 431. And a horizontally arranged pressing plate 436 is fixedly connected to the lower end of the piston shaft 437, and a guide pin penetrates the pressing plate 436. The spring as the elastic member 438 is fitted around the piston shaft 437 and clamped between the pressing plate 436 and the fixing base 431, so that the pressing plate 436 always has a tendency to be pressed down. In addition, the tail end of the guide plate part 412 is provided with a avoiding hole for avoiding the cutter 432 and the guide pin, thereby preventing interference.

Thus, by driving the cutting driver 433, the fixing seat 431 descends, the front guide pin 434 is firstly contacted with the handle to be processed, and the position of the handle is adjusted by chamfering; the rear guide pin 435 then penetrates An Ge the guide plate portion 412, so that the front guide pin 434 and the rear guide pin 435 respectively lock both sides of the handle to be processed; the pressing plate 436 presses the handle, and the guide plate part 412 tightens the handle, so that the handle to be processed is completely fixed; finally, the lower end of the cutter 432 penetrates through the guide plate part 412, and the cutter 432 cuts off the connection point of the row of handles, so that the handles to be processed and the subsequent row of handles are separated.

The stand is further provided with a feed mechanism 44 at the rear end of the guide plate portion 412, and the feed mechanism 44 includes a feed frame 441, a feed driver 442, and a feed gripper 443. The cylinder body of the forward cylinder as the forward driver 442 is fixed to the stand, and the piston rod thereof is fixed to the forward frame 441, so that the forward frame 441 is driven to move along the X axis. Two forward grippers 443 are mounted on the forward frame 441, and the two forward grippers 443 are located on both sides of the tail end Y axis of the guide plate portion 412. The forward pneumatic finger as the forward gripper 443 has its cylinder fixed to the forward frame 441 and its air claw for gripping both ends of the separated handle, so that the upper end of the handle is gripped by the forward gripper 443 and driven by the forward driver 442 to advance the separated handle from the guide plate portion 412 to mid-air.

The handle mounting device 5 is mounted on the tail of the main transmission mechanism 22, and the handle mounting device 5 comprises a lower inserting mechanism 51 and a lower pulling mechanism 52.

As shown in fig. 17, the lower insertion mechanism 51 is mounted on the stand and is located directly above the tail of the main transfer mechanism 22. The lower insertion mechanism 51 includes a lift drive assembly 511, an adjustment assembly 512, and a bending assembly 513.

The lift drive assembly 511 includes a lift platform 5111 and a drop-down lift driver 5112, the drop-down lift driver 5112 including a guide bar and a timing belt. Two vertically arranged guide pipes penetrate through the vertical frame, and the lower ends of the guide pipes are fixedly connected with the lifting platform 5111. The synchronous belt and the corresponding parts thereof all adopt the prior art, and the embodiment is not repeated. So that the elevating platform 5111 is vertically elevated by the driving of the inserting elevating driver 5112.

The adjustment assembly 512 includes a guide shaft 5121 and a sliding platform 5122. Both sliding platforms 5122 slide on the bottom surface of the elevating platform 5111 by a guide rail provided along the Y axis. The stand is fixedly connected with guide shafts 5121 through guide rod seats respectively on two sides of the Y-axis direction of the sliding platforms 5122, each sliding platform 5122 is hinged with a shaft sleeve 5123 through a rotating pin arranged on the X-axis, and the shaft sleeves 5123 are sleeved on the adjacent guide shafts 5121 and slide along the guide shafts 5121. Thus, by adjusting the extending direction of the guide shaft 5121, the positions of the two sliding platforms 5122 can be controlled during the descending process of the lifting platform 5111.

One bending component 513 is installed on the bottom surface of each of the two sliding platforms 5122, and the two bending components 513 are arranged in a mirror image mode. The bending assembly includes a cam member 5131 and a rotational shaft 5132. The cam member 5131 includes a cam groove seat 51311, a follower 51312, and a rotary arm 51313; one end of the rotating arm 51313 is fixedly connected to the starting end of the rotating arm 51313 along the radial direction of the rotating shaft 5132, the other end of the rotating arm 51313 is fixedly connected with the follower 51312, and the rotating shaft 5132 and the rotating arm 51313 are arranged along the X-axis direction and are not positioned on the same axis. The cam groove seat 51311 is provided with a sliding groove, and the follower 51312 is inserted into the sliding groove and slides along the sliding groove. Since the chute portion is inclined with respect to the guide shaft 5121 and the follower 51312 and the rotation shaft 5132 are eccentrically disposed, the cam member 5131 drives the rotation shaft 5132 to rotate. The end of each rotating shaft 5132 is respectively provided with a lower inserting gripper 514 which is used as a lower inserting pneumatic finger of the lower inserting gripper 514, a cylinder body of the lower inserting pneumatic finger is fixedly connected with the end of the rotating shaft 5132, and two pneumatic claws of the lower inserting pneumatic finger are used for clamping a lifting handle.

After the handle is conveyed to the right position by the front conveying mechanism 44, the lower inserting grippers 514 on the two bending assemblies 513 clamp the handle transferred by the front conveying mechanism 44, the lower inserting grippers 514 simultaneously insert the end parts and the main body of the handle, part of the end parts of the two ends of the handle are exposed from the air claws of the lower inserting grippers 514, and the front conveying grippers 443 loosen the handle and are driven by the front conveying driver 442 to return to the original position, so that the transfer of the handle is completed; then the two rotating shafts 5132 are driven by the cam component to rotate by 90 degrees oppositely, so that the two ends of the lifting handle are turned downwards; as the elevating platform 5111 descends, the exposed portions of the both ends are inserted into the upper and lower mounting holes of the cardboard.

As shown in connection with fig. 18, the work panel 68 is provided with a through opening to allow insertion of the handle into the board. The third positioning member 53 is installed downstream of the through-penetration. The third positioning member 53 includes a third ram which is driven up and down and which presses on the work panel 68 after being lowered, stopping the sheet by blocking the advancing path of the sheet while the main transport mechanism 22 is stopped; thereby stopping the swing cover directly below and in alignment with the lower insertion mechanism 51.

As shown in fig. 19, a pull-down mechanism 52 is mounted on the main frame 6, and the pull-down mechanism 52 includes a pull-down lift driver 521 and a pull-down gripper 522. The cylinder body of the pull-down cylinder as the pull-down lift driver 521 is fixedly connected to the main frame 6, and the piston rod thereof is fixedly connected to the cylinder body of the pull-down gripper 522, so that the pull-down lifter drives the pull-down gripper 522 to lift. The number of the pull-down grippers 522 is two, and the pull-down grippers 522 are respectively located right below the two through openings. And pull-down grippers 522 are pull-down pneumatic fingers.

After the insertion process is completed, the pull-down lifting driver 521 drives the two pull-down grippers 522 to lift, and the two pull-down grippers 522 clamp the portions of the two end portions of the handle penetrating through the cardboard; the pull-down lifting driver 521 drives the two pull-down grippers 522 to synchronously descend, and the end parts of the lifting handles are pulled to the lower side of the paperboard, so that the two ends of the main body of the lifting handles respectively penetrate through the two groups of upper and lower mounting holes; thus, all procedures of mounting the handles are completed.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. Handle installation assembly line, including cardboard conveyor (2) and handle installation device (5), its characterized in that: a working panel (68) is fixedly connected on the main frame (6), and the working panel (68) is used for supporting the swing cover; the paperboard conveying device (2) comprises a main conveying mechanism (22), wherein the main conveying mechanism (22) pushes the paperboard, slides the swinging cover on the working panel (68) and conveys the paperboard to the handle mounting device (5); the handle mounting device (5) comprises a downward inserting mechanism (51) and a downward pulling mechanism (52), wherein the downward inserting mechanism (51) comprises a lifting driving component (511) and a bending component (513); the lifting driving assembly (511) comprises a lifting platform (5111), and the lifting platform (5111) is driven to lift; two bending assemblies (513) are mounted on the lifting platform (5111), and the bending assemblies (513) comprise rotating shafts (5132); the tail ends of the two rotating shafts (5132) are respectively provided with a lower inserting gripper (514), the two lower inserting grippers (514) are respectively used for gripping the end parts and the main body of the lifting handle, and part of the end parts of the two ends of the lifting handle are exposed from the air claws of the lower inserting grippers (514); the two rotating shafts (5132) are respectively driven to rotate by 90 degrees in opposite directions and are used for downwards turning over the two ends of the lifting handle; the working panel (68) is provided with a through hole for the lifting handle to penetrate through, the pull-down mechanism (52) comprises two pull-down grippers (522), the two pull-down grippers (522) are respectively positioned right below the two through holes, and the two pull-down grippers (522) are driven to lift and respectively clamp the parts of the two end parts of the lifting handle penetrating through the paperboard;

The paperboard conveying device (2) further comprises a negative alignment mechanism (24), and the negative alignment mechanism (24) comprises a first turnover assembly (241) and a second turnover assembly (242); the first turnover assembly (241) comprises a downward turnover block (2412) and a first lifter (2413), the two downward turnover blocks (2412) are driven to lift by the first lifter (2413), and a first punching hole for the downward turnover block (2412) to penetrate is formed in the working panel (68); the second turnover assembly (242) comprises a lower shifting assembly (2421) and a shifting assembly (2422), the working panel (68) is provided with a sliding hole, and the lower shifting assembly (2421) presses the second bottom plate into the sliding hole; the poking assembly (2422) comprises a poking plate (24221) and a poking driver (24222), wherein the poking plate (24221) is flush with the working panel (68) and slides in the sliding hole under the driving of the poking driver (24222);

The paperboard conveying device (2) further comprises a counter-punching assembly (243), the counter-punching assembly (243) comprises punching blocks (2432) and a second lifter (2433), the second lifter (2433) drives the two punching blocks (2432) to lift, and two second punching openings for the punching blocks (2432) to penetrate through are formed in the working panel (68);

A handle feeding device (3) is arranged at the upstream of the handle mounting device (5); the lifting handle feeding device (3) comprises a bin box (31) and a discharging mechanism (34), a discharging hole (312) is formed in the bottom of the bin box (31) close to the downstream side, a slide way opening (313) is formed in the bottom surface of the bin box (31), and the slide way opening (313) and the discharging hole (312) are communicated with each other on the side close to the downstream side; the delivery mechanism (34) comprises a distributor (341), a draw hook device (342) and a draw hook board (343), wherein the draw hook device (342) is driven by the distributor (341) to reciprocate between the upstream and the downstream along the X axis; the two draw hook plates (343) are driven by the draw hook devices (342) to move along the Y axis in opposite directions or back to the Y axis, so that the two draw hook plates (343) have two states of contraction and expansion, the two draw hook plates (343) in the contraction state enter the bin box (31) from the slideway port (313), and the two draw hook plates (343) in the expansion state leave the bin box (31) from the discharge port (312);

The bin lifting mechanism (33) is arranged below the bin box (31), the bin lifting mechanism (33) comprises a supporting plate (331) and a bin supporting driver (332), the bin box (31) is supported by the supporting plate (331), and the supporting plate (331) is driven by the bin supporting driver (332) and drives the bin box (31) to lift.

2. The handle assembly line of claim 1, wherein: a paperboard feeding device (1) is arranged at the upstream of the paperboard conveying device (2), and the paperboard feeding device (1) comprises a first conveying mechanism (11) and a second conveying mechanism (12) which are connected with each other;

The first conveying mechanism (11) is positioned at the upstream of the second conveying mechanism (12), the first conveying mechanism (11) is higher than the second conveying mechanism (12), and a drop is formed between the first conveying mechanism (11) and the second conveying mechanism (12);

The second conveying mechanism (12) comprises a second frame (121) and a second traction piece (122), the second frame (121) is fixedly connected with a limited material baffle (123) on the upper side of the second traction piece (122), and an outlet is formed between the vertically arranged limited material baffle (123) and the second traction piece (122).

3. The handle assembly line of claim 2, wherein: the paperboard conveying device (2) comprises a feeding mechanism (21), and the feeding mechanism (21) is positioned above the starting end of the main conveying mechanism (22); the feeding mechanism (21) comprises an X-axis conveying assembly (211), a pulling assembly (212) and a feeding driver (213); the X-axis conveying assembly (211) comprises a feeding platform, a feeding driver (213) drives the feeding platform to translate, a pulling assembly (212) is arranged on the feeding platform, and the pulling assembly (212) is used for clamping the paper board sent out by the second conveying mechanism (12) and pulling the paper board to the position above the starting end of the main conveying mechanism (22).

4. The handle assembly line of claim 1, wherein: a separation cutting device (4) is arranged between the handle installation device (5) and the handle feeding device (3); the separating and cutting device (4) comprises a bearing plate (41) and a cutting mechanism (43), wherein the cutting mechanism (43) comprises a fixed seat (431), a cutter (432) and a cutting driver (433); the fixed seat (431) is driven by the cutting driver (433) to lift, and the two cutters (432) are respectively fixedly connected to two sides of the fixed seat (431); the bottom surface of the fixed seat (431) is fixedly connected with a front guide pin (434) and a rear guide pin (435), and the front guide pin (434) and the rear guide pin (435) are respectively provided with a row; the bottoms of the front guide pin (434) and the rear guide pin (435) on the adjacent sides are provided with chamfers, and the tail end of the bearing plate (41) is provided with avoidance holes for avoiding the cutter (432) and the guide pin.

5. The handle assembly line of claim 4, wherein: the bearing plate (41) sequentially comprises an initial part (411) and a guide plate part (412) from upstream to downstream, wherein charging spaces are formed on two sides of the initial part (411), the charging spaces are used for placing drag hook plates (343) in two expansion states, and the width of the guide plate part (412) is gradually prolonged from upstream to downstream.

6. The handle assembly line of claim 4, wherein: the separation cutting device (4) comprises a forward pushing mechanism (42), wherein the forward pushing mechanism (42) comprises a toothed plate (421), a pressing driver (422) and a forward pushing driver (423); the gear inserting plate (421) comprises a plate body and gear shaping teeth, and the gear shaping teeth are uniformly and vertically fixedly connected to two sides of the plate body; the gear inserting plate (421) is driven to lift by the material pressing driver (422), and the gear inserting plate (421) is driven by the forward pushing driver (423) to advance downstream along the bearing plate (41).