Automatic assembly equipment for paper tray inner box

Abstract

The application discloses a kind of automatic assembly equipment of paper tray inner box body, it includes fifth machine body, be connected to fifth machine body and be used to preform paperboard paper tray preforming machine core, be arranged in fifth machine body and be used to the secondary forming of paperboard after preforming secondary bending forming machine core and for the transfer wheel feeding unit of preformed paperboard into secondary bending forming machine core.This application is folded into the plate body structure with inner support structure by paper tray preforming machine core from the plane unfolded state of paperboard, then pick up preformed paperboard by transfer wheel feeding unit, and rotate into secondary bending forming machine core, with the effect of turning over while feeding, eliminate the action time difference between two processes, finally make plate body structure into box body structure with outer edge covered outside inner support by secondary bending forming machine core, realize the inner support full-automatic assembly of new wine box, thereby solve the problem that traditional wine box assembly production line cannot adapt to the full-automatic production of new wine box.

Description

Technical Field

[0001] This invention relates to the field of wine box assembly production line technology, and in particular to an automatic assembly equipment for paper tray inner box. Background Technology

[0002] Traditional wine box packaging generally includes a box body, a seal at the box opening, and a box lid for closing the box body. For example, Chinese invention patent application (publication number CN 111590317 A) discloses an assembly process method for the top lid of a barrel box, an eight-station assembly base, and assembly equipment. The top lid and the surrounding strip are automatically glued to the barrel box body to achieve automatic assembly of the top lid and the surrounding strip.

[0003] To enhance the design of wine box packaging, a novel wine box packaging design has been proposed. This wine box packaging includes a box body, a paper tray inside the box body, and a wreath assembled on the paper tray. The paper tray is a box-shaped structure obtained by two-stage molding of cardboard. Generally, cardboard needs to be pre-formed once and then folded into a board structure with an inner tray structure. After a second bending, the board structure is folded into a box structure. However, existing wine box assembly equipment is obviously not suitable for producing this type of wine box packaging. Therefore, the present invention aims to provide a device that can automatically assemble paper trays. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic assembly device for paper tray inner boxes.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an automatic assembly device for paper tray inner box, comprising a fifth machine body, a paper tray preforming core connected to the fifth machine body for preforming the paper tray, a secondary bending forming core disposed in the fifth machine body for secondary forming of the preformed paper tray, and a rotary feeding unit for transferring the preformed paper tray into the secondary bending forming core.

[0006] In a further technical solution, the paper tray preforming core includes a fourth body, a preforming base disposed on the fourth body, a paperboard supply device disposed on the fourth body and used to supply paperboard to the preforming base, and a folding plate device disposed above the preforming base. The folding plate device includes a folding plate base fixedly disposed on the fourth body, a preforming mold core movably disposed on the folding plate base, a primary bending assembly for bending the paperboard carried by the preforming base, and a primary edge folding assembly for folding the edge of the bent paperboard.

[0007] In a further technical solution, the preformed mold core includes a first folding plate slide block slidably disposed on one side of the folding plate base, a second folding plate slide block slidably disposed on the other side of the folding plate base, a first folding plate assembled on the first folding plate slide block, and a second folding plate assembled on the second folding plate slide block; the folding plate device is further provided with a folding plate drive source for driving the first folding plate slide block and the second folding plate slide block to move closer to each other.

[0008] In a further technical solution, the preformed base includes a base body, a support plate disposed in the middle of the base body, and two flip plates respectively rotatably disposed on both sides of the base body. The bending assembly includes two flip drive sources assembled on the base body. Each flip drive source drives the corresponding flip plate to flip towards the support plate, so that the two sides of the cardboard are respectively bent and preformed along the shape of the preformed mold core.

[0009] In a further technical solution, the secondary bending forming core is provided with a secondary bending assembly and at least one secondary forming mold core that can extend into the secondary bending assembly.

[0010] In a further technical solution, the rotary feeding unit includes a rotary central shaft rotatably mounted on the fifth machine body, a rotary drive source fixedly mounted on the fifth machine body and used to drive the rotary central shaft to rotate, and multiple feeding rotary wheels mounted on the rotary central shaft. Each feeding rotary wheel is equipped with multiple feeding clamps for clamping the pre-formed cardboard.

[0011] In a further technical solution, the secondary bending forming core is further provided with a turntable mold core unit. The turntable mold core unit includes a turntable core body rotatably installed on the fifth machine body and a turntable core drive source fixedly assembled on the fifth machine body for driving the turntable core body. The turntable core body has multiple secondary forming mold cores, and each secondary forming mold core is equipped with a mold core suction cup for adsorbing paper trays.

[0012] In a further technical solution, the secondary bending assembly includes two second bending units arranged at intervals and in parallel. Each second bending unit includes a second bending base fixedly installed on the fifth body, a second bending plate rotatably installed on the second bending base, and a second bending drive source for driving the second bending plate to flip.

[0013] In a further technical solution, the fifth body has a secondary folding assembly above the secondary bending assembly. The secondary folding assembly includes a secondary folding base mounted on the fifth body, a secondary longitudinal base that is inclined and movably mounted on the secondary folding base, a secondary folding plate that is longitudinally slidably mounted on the secondary longitudinal base, a folding plate pusher mounted on the secondary folding plate, and a rotating arm transmission source hinged to the secondary folding plate. The rotating arm transmission source is used to make the secondary folding plate slide vertically up and down along the secondary longitudinal base, and the secondary longitudinal base slides inclined up and down along the secondary folding base.

[0014] In a further technical solution, the fifth machine body is provided with a bottom cover assembly device on the third side of the turntable mold core unit. The bottom cover assembly device includes a bottom cover storage structure fixedly disposed on the fifth machine body, a bottom cover picking component disposed below the bottom cover storage structure and used to pick up the bottom covers one by one, and a bottom cover feeding component used to assemble the bottom covers picked up by the bottom cover picking component into the paper tray carried by the forming mold core.

[0015] The advantages of this invention compared to the prior art after adopting the above structure are:

[0016] This invention uses a paper tray preforming core to fold cardboard from a flat, unfolded state into a plate structure with an inner tray. Then, a rotary feeding unit picks up the pre-formed cardboard and rotates it into a secondary bending forming core. During feeding, the cardboard is flipped over, eliminating the time difference between the two processes. Finally, the secondary bending forming core folds the plate structure into a box structure with an outer edge covering the inner tray, realizing fully automated assembly of the inner tray of the new wine box. This solves the problem that traditional wine box assembly lines cannot be adapted to the fully automated production of the new wine box. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a flowchart showing the process from pre-formed paper tray semi-finished product to finished paper tray, and then the finished paper tray is transferred to the box body;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the paper tray preforming mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of the folding plate device of the paper tray preforming machine core;

[0022] Figure 5 This is a structural schematic diagram of the preforming mold core and the first folding edge assembly of the paper tray preforming machine core;

[0023] Figure 6 This is a structural schematic diagram of the folding plate device from another perspective of the paper tray preforming machine core;

[0024] Figure 7 This is a structural diagram of the folding plate base, cardboard gluing assembly, and cardboard pushing unit of the paper tray preforming machine core;

[0025] Figure 8 This is a schematic diagram of the preforming base and cardboard supply device of the paper tray preforming machine core;

[0026] Figure 9 This is a schematic diagram of the paperboard supply device for the paper tray preforming machine core;

[0027] Figure 10 This is a schematic diagram of the preforming base of the paper tray preforming machine core;

[0028] Figure 11 This is a structural schematic diagram of the preforming base of the paper tray preforming machine core from another perspective;

[0029] Figure 12 This is a structural diagram of the fifth body, the secondary bending and forming core, and the rotary feeding unit;

[0030] Figure 13 This is a structural diagram of the secondary bending forming mechanism and the rotary feeding unit;

[0031] Figure 14 This is a structural diagram of the rotary feeding unit, the secondary bending assembly, the secondary pushing unit, and the secondary folding assembly;

[0032] Figure 15 This is a schematic diagram of the rotary feeding unit;

[0033] Figure 16 This is a structural diagram of the double-folded edge assembly;

[0034] Figure 17 This is a structural diagram of the secondary bending assembly and the secondary feeding unit;

[0035] Figure 18 This is a structural diagram of the turntable mold core unit, the bottom cover assembly device, and the secondary cardboard gluing assembly.

[0036] Figure 19 This is a structural schematic diagram of a secondary paperboard laminating assembly;

[0037] Figure 20 This is a schematic diagram of the turntable mold core unit;

[0038] Figure 21 This is a structural schematic diagram of the bottom cover assembly device. Detailed Implementation

[0039] The following are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

[0040] like Figures 1 to 21As shown, the present invention provides an automatic assembly device for paper tray inner box, which includes a fifth machine body 40, a paper tray preforming core 3 connected to the fifth machine body 40 for preforming the paper tray, a secondary bending forming core disposed in the fifth machine body 40 for secondary forming of the preformed paper tray, and a rotary feeding unit 42 for transferring the preformed paper tray into the secondary bending forming core.

[0041] This invention uses a paper tray pre-forming core 3 to fold cardboard from a flat, unfolded state into a plate structure with an inner tray. Then, a rotary feeding unit 42 picks up the pre-formed cardboard and rotates it into a secondary bending forming core. During feeding, the cardboard is flipped over, eliminating the time difference between the two processes. Finally, the secondary bending forming core folds the plate structure into a box structure with an outer edge covering the inner tray, realizing fully automatic assembly of the inner tray of the new wine box. This solves the problem that traditional wine box assembly lines cannot adapt to the fully automatic production of the new wine box.

[0042] To better explain the working principle of this invention, Figure 1 The diagram illustrates the process from pre-formed paper tray semi-finished product to finished paper tray and the finished paper tray assembled into the box body. The paper tray pre-forming mechanism 3 involved in this invention forms the following... Figure 1 The topmost paper tray is a semi-finished product, while the secondary bending and forming mechanism produces a product like this. Figure 1 The finished product of the second layer of paper tray.

[0043] The working principle of the paper tray preforming core 3 is explained below:

[0044] In this embodiment, the paper tray preforming core 3 includes a fourth body 30, a preforming base 31 disposed on the fourth body 30, a paperboard supply device 32 disposed on the fourth body 30 and used to supply paperboard to the preforming base 31, and a folding device 33 disposed above the preforming base 31. The folding device 33 includes a folding base 330 fixedly disposed on the fourth body 30, a preforming core 331 movably disposed on the folding base 330, a primary bending assembly for bending the paperboard carried by the preforming base 31, and a primary edge folding assembly for folding the bent paperboard.

[0045] The present invention uses a cardboard supply device 32 to automatically feed the cardboard to be processed to the preforming base 31. The cardboard is quickly preformed by the movable preforming mold core 331, the one-time bending component, and the one-time folding component. This structure can quickly demold the cardboard after preforming without deforming the paper tray, so that the rotary feeding unit 42 can take away the preformed semi-finished paper tray. Furthermore, the movable preforming mold core 331 can be easily replaced according to the size of the finished paper tray, which has high practicality and versatility.

[0046] In this embodiment, the preformed mold core 331 includes a first folding slide 3310 slidably disposed on one side of the folding base 330, a second folding slide 3311 slidably disposed on the other side of the folding base 330, a first folding plate 3312 assembled on the first folding slide 3310, and a second folding plate 3313 assembled on the second folding slide 3311; the folding device 33 is further provided with a folding drive source 3314 for driving the first folding slide 3310 and the second folding slide 3311 to move closer to each other.

[0047] In actual operation, the folding plate drive source 3314 drives the first folding plate slide 3310 and the second folding plate slide 3311 to move closer to each other, so that the first folding plate 3312 enters the preforming base 31 from the first side and the second folding plate 3313 enters the preforming base 31 from the second side. At this time, the first folding plate 3312 and the second folding plate 3313 together form a preforming mold core that is adapted to the shape and size of the inner liner of the paper tray.

[0048] In this embodiment, the preformed base 31 includes a base body 310, a support plate 311 disposed in the middle of the base body 310, and two flip plates 312 respectively rotatably disposed on both sides of the base body 310. The bending assembly includes two flip drive sources 313 assembled on the base body 310. Each flip drive source 313 drives the corresponding flip plate 312 to flip towards the support plate 311, so that the two sides of the cardboard are bent and preformed along the shape of the preformed mold core 331.

[0049] In a specific application, the cardboard supplied by the cardboard supply device 32 is fed to the preforming base 31. Then, the first folding plate 3312 enters the preforming base 31 from the first side, and the second folding plate 3313 enters the preforming base 31 from the second side. Both the first folding plate 3312 and the second folding plate 3313 are located above the support plate 311, so that the middle of the cardboard is kept between the preforming core 331 and the support plate 311, and the two sides of the cardboard are located at the positions of the two flipping plates 312 respectively. Then, the flipping drive source 313 pushes the two flipping plates 312 to flip 90 degrees respectively, so that the flipping plates 312 are folded along the preforming core 331. Then, the first folding assembly folds the edge of the folded cardboard.

[0050] The flipping drive source 313 includes two corresponding linkage hinge structures. Each linkage hinge structure includes a vertically arranged push plate cylinder 3130 installed on the base body 310, a push plate shaft 3131 connected to the push plate cylinder 3130, a push plate connecting rod 3132 hinged to the push plate shaft 3131, a push plate central shaft 3133 assembled on the push plate connecting rod 3132, and a push plate rotating seat 3134 rotatably assembled on the push plate central shaft 3133. The push plate rotating seat 3134 is also fixedly connected to the flipping plate 312.

[0051] More specifically, each flip plate 312 is rotatably connected to the base body 310 via a flipping central shaft 315.

[0052] In addition, the preformed base 31 is also provided with a cardboard lifting assembly 314, and the supporting plate 311 is connected to the cardboard lifting assembly 314.

[0053] During preforming, the cardboard lifting assembly 314 is used to lift the supporting plate 311 so that the cardboard of the supporting plate 311 abuts against the bottom of the preforming mold core 331, ensuring that the folding plate is folded while in contact with the preforming mold core 331. Then, the two flipping plates 312 respectively flip the first and second sides of the cardboard along the preforming mold core 331. Finally, the first folding assembly completes one folding.

[0054] In this embodiment, a folding plate guide seat 3100 is provided on each side of the preformed base 31. Each folding plate guide seat 3100 has a guide groove 3101. The guide groove 3101 of one folding plate guide seat 3100 is for the first folding plate 3312 to pass through, and guides the first folding plate 3312. The guide groove 3101 of the other folding plate guide seat 3100 is for the second folding plate 3313 to pass through, and guides the second folding plate 3313. This structural design can ensure that the first folding plate 3312 and the second folding plate 3313 can move horizontally without shaking, and ensure the consistency of the finished paper tray.

[0055] In this embodiment, the first folding assembly includes a first folding assembly 332 disposed on one side of the preformed mold core 331 and a second folding assembly 333 disposed on the other side of the preformed mold core 331, and the preformed mold core 331 can extend into the preformed base 31.

[0056] During a single folding process, firstly, the first folding assembly 332 folds the first side of the folded cardboard along the pre-forming mold core 331 for the first time. Then, the second folding assembly 333 folds the second side of the folded cardboard along the pre-forming mold core 331 for the second time. The cardboard after the first folding forms the inner liner of the paper tray. The second side of the cardboard after the second folding covers the inner liner to facilitate the subsequent formation of the tray edge.

[0057] The first folding assembly 332 includes a first mounting inclined seat 3320 fixedly installed on the folding plate base 330, a first folding drive source 3323 disposed on the first mounting inclined seat 3320, and an inclined folding slide 3322 that is inclined relative to the first mounting inclined seat 3320 and driven to be connected to the first folding drive source 3323.

[0058] In this embodiment, there are two inclined folding shovels 3322, and the number of first folding drive sources 3323 is also configured to be two. Configuring two inclined folding shovels 3322 can ensure the consistency of the left and right sides of the cardboard, resulting in better performance.

[0059] In this embodiment, the second folding assembly 333 includes a second mounting inclined seat 3330 fixedly installed on the folding plate base 330, a second folding drive source 3331 disposed on the second mounting inclined seat 3330, a second folding slide 3333 inclined and movably installed on the folding plate base 330, and a horizontal folding slide 3332 assembled on the second folding slide 3333. The second folding drive source 3331 is used to drive the second folding slide 3333 to slide.

[0060] In this embodiment, a first cardboard gluing assembly 34 is also included, which is mounted on the fourth body 30 or the folding plate base 330. The first cardboard gluing assembly 34 is located at the output end of the cardboard supply device 32 and is used to apply glue to designated positions of the cardboard before cardboard preforming.

[0061] In this embodiment, the first cardboard gluing assembly 34 is preferably assembled on the folding plate base 330. The first cardboard gluing assembly 34 includes a gluing slide 340 slidably mounted on the folding plate base 330, a dispensing valve 341 assembled on the gluing slide 340, and a gluing drive source 342 for driving the gluing slide 340 to slide. The dispensing valve 341 is used to apply glue to the outer edge of the paper tray to facilitate the subsequent assembly of the floral wreath.

[0062] In this embodiment, the cardboard supply device 32 includes a cardboard storage structure 320 disposed on the upper part of the fourth body 30, a picking component 321 disposed below the cardboard storage structure 320 and used to pick up the cardboard in the cardboard storage structure 320 one by one, and a cardboard feeding component 322 used to feed the picked-up cardboard into the preforming base 31.

[0063] The cardboard storage structure 320 includes a trough structure formed by multiple cooperating cardboard baffles for stacking cardboard vertically. Its shape is roughly cuboid. In this embodiment, the picking component 321 is a vacuum suction cup assembly. However, in other embodiments, a push-pull mechanism can be used to pull or push the cardboard out of the storage trough. The cardboard feeding component 322 includes a cardboard feeding slide 300 slidably connected to the fourth body 30, a feeding cylinder 301 mounted on the cardboard feeding slide 300, a cardboard feeding support 302 connected to the feeding cylinder 301, and a cardboard feeding drive source 303 that drives the cardboard feeding slide 300 to slide along the fourth body 30. In specific applications, the picking component 321 removes cardboard one by one using the vacuum suction cup assembly. Then, the cardboard feeding drive source 303 drives the cardboard feeding slide 300 to slide to the position of the picking component 321, and the feeding cylinder 301 drives the cardboard feeding slide to... The material carrier 302 drives the cardboard to rise, causing the cardboard to detach from the suction of the vacuum suction cup assembly and fall into the cardboard feeding carrier 302. This allows the cardboard feeding drive source 303 to drive the cardboard feeding slide 300 to slide and deliver the cardboard to the designated position. In this invention, the cardboard is delivered to the first cardboard gluing assembly 34. More specifically, a cardboard pushing unit 35 mounted on the folding plate base 330 is provided between the first cardboard gluing assembly 34 and the preforming base 31. The cardboard pushing unit 35 pushes the glued cardboard into the preforming base 31. The cardboard pushing unit 35 is equipped with a cardboard pushing cylinder 350 fixedly mounted on the folding plate base 330, a cardboard pushing central shaft 351 rotatably mounted on the folding plate base 330, a cardboard pushing connecting rod 352 connected to the cardboard pushing cylinder 350 and hinged to the cardboard pushing central shaft 351, and a cardboard pushing plate 353 mounted on the cardboard pushing central shaft 351.

[0064] In a more specific technical solution, the folding plate base 330 includes a first substrate 3300, a second substrate 3301, and a third substrate 3302 connecting the first substrate 3300 and the second substrate 3301. The first substrate 3300 and the second substrate 3301 are spaced apart and arranged in parallel. The first folding edge assembly 332 is mounted on the first substrate 3300, and the second folding edge assembly 333, the first cardboard gluing assembly 34, and the cardboard pushing unit 35 are all disposed on the second substrate 3301.

[0065] The working principle of the double bending forming mechanism is explained below:

[0066] In this embodiment, the secondary bending forming core is provided with a secondary bending assembly 41 and at least one secondary forming mold core 430 that can extend into the secondary bending assembly 41.

[0067] The secondary bending forming core works in conjunction with the secondary forming mold core 430 and the secondary bending assembly 41 to automatically fold the pre-formed plate structure into a box structure along the secondary forming mold core 430. It has a high degree of automation and strong practicality.

[0068] Preferably, the rotary feeding unit 42 includes a rotary central shaft 420 rotatably mounted on the fifth machine body 40, a rotary drive source 421 fixedly mounted on the fifth machine body 40 for driving the rotary central shaft 420 to rotate, and multiple feeding rotary shafts 422 mounted on the rotary central shaft 420. Each feeding rotary shaft 422 is equipped with multiple feeding clamps 423 for clamping the pre-formed cardboard. Each feeding clamp 423 is composed of two spaced and parallel sheet metal parts that form a cardboard clamping groove. This split-type structure allows the size of the cardboard clamping groove to be adjusted according to the size of the finished paper tray during actual production, improving the versatility of the equipment.

[0069] In this embodiment, the fifth machine body 40 is provided with a secondary pushing unit 44 below the rotary feeding unit 42. The rotating feeding rotary wheel 422 conveys the pre-formed cardboard to one side of the secondary bending assembly 41. The secondary pushing unit 44 is used to push the pre-formed cardboard out from the feeding clamp 423 and into the secondary bending assembly 41.

[0070] The secondary feeding unit 44 includes a secondary feeding mounting plate 440 fixedly installed on the fifth body 40, a secondary feeding cylinder 441 assembled on the secondary feeding mounting plate 440, a secondary feeding slide plate 442 slidably installed on the secondary feeding mounting plate 440 and drivenly connected to the secondary feeding cylinder 441, and a secondary feeding plate 443 fixedly installed on the secondary feeding slide plate 442. More specifically, the secondary feeding mounting plate 440 extends horizontally and passes through between two adjacent feeding rollers 422. Generally, two secondary feeding units 44 are set to ensure that the cardboard is not deviated during feeding and to ensure the consistency of the finished product.

[0071] In this embodiment, the secondary bending forming mechanism is further provided with a turntable mold core unit 43. The turntable mold core unit 43 includes a turntable core 431 rotatably mounted on the fifth body 40 and a turntable mechanism drive source 432 fixedly mounted on the fifth body 40 and used to drive the turntable core 431. The turntable core 431 has a plurality of the secondary forming mold cores 430, and each secondary forming mold core 430 is equipped with a mold core suction cup for adsorbing paper trays.

[0072] Generally, there are four secondary forming mold cores 430. The connection line of the four secondary forming mold cores 430 is square. As the turntable core drive source 432 drives the turntable core 431 to rotate, the rotating turntable core 431 causes one of the secondary forming mold cores 430 to extend into the secondary bending assembly 41. At the same time, another secondary forming mold core 430 sends the paper tray after secondary bending to the glue dispensing station, another secondary forming mold core 430 sends the glued paper tray to the bottom box assembly station, and another secondary forming mold core 430 unloads the paper tray after the bottom box is assembled.

[0073] In this embodiment, the secondary bending assembly 41 includes two second bending units 410 arranged at intervals and in parallel. Each second bending unit 410 includes a second bending base 411 fixedly installed on the fifth body 40, a second bending plate 412 rotatably installed on the second bending base 411, and a second bending drive source 413 for driving the second bending plate 412 to rotate.

[0074] In this embodiment, a secondary bending assembly 45 is provided above the secondary bending assembly 41. The secondary bending assembly 45 includes a secondary bending base 450 mounted on the fifth body 40, a secondary longitudinal base 451 that is inclined and movably mounted on the secondary bending base 450, a secondary bending plate 452 that is longitudinally slidably mounted on the secondary longitudinal base 451, a bending plate pusher 453 mounted on the secondary bending plate 452, and a rotating arm transmission source 454 that is hinged to the secondary bending plate 452. The rotating arm transmission source 454 is used to make the secondary bending plate 452 slide vertically up and down along the secondary longitudinal base 451, and the secondary longitudinal base 451 slides inclined up and down along the secondary bending base 450.

[0075] This invention uses the secondary longitudinal base 451 and the secondary folding plate 452 to move and adjust the movement trajectory of the folding plate pusher 453, so that the folding plate pusher 453 automatically folds the edge of the folding plate after the cardboard has completed the secondary bending. Its design is ingenious and the folding accuracy is high.

[0076] More specifically, the swing arm drive source 454 includes a swing arm drive motor 4540 fixedly installed on the secondary folding base 450, a coupling 4541 assembled on the output end of the swing arm drive motor 4540, and a folding swing arm 4542 hinged to the coupling 4541. The folding swing arm 4542 is hinged to the secondary folding plate 452 through the folding swing arm connecting rod 4543.

[0077] In this embodiment, the fifth machine body 40 is equipped with a secondary cardboard gluing assembly 46 above the turntable core unit 43. The rotating turntable core 431 feeds the paper tray after secondary bending into the secondary cardboard gluing assembly 46 through the secondary forming core 430. The secondary cardboard gluing assembly 46 is equipped with a Y-axis drive source 460 connected to the fifth machine body 40, an X-axis drive source 461 connected to the Y-axis drive source 460, and a secondary gluing valve 462 connected to the X-axis drive source 461 for secondary gluing of the paper tray. The secondary gluing valve 462 applies glue to the joint between two adjacent sides of the box structure to ensure high stability of the folded box structure and prevent the box structure from falling apart.

[0078] In this embodiment, the fifth machine body 40 is provided with a bottom cover assembly device 47 on the third side of the turntable mold core unit 43. The bottom cover assembly device 47 includes a bottom cover assembly base 473 fixedly installed on the fifth machine body 40, a bottom cover storage structure 470 fixedly installed on the bottom cover assembly base 473, a bottom cover picking component 471 located below the bottom cover storage structure 470 and used to pick up the bottom covers one by one, and a bottom cover feeding component 472 used to assemble the bottom covers picked up by the bottom cover picking component 471 into the paper tray carried by the secondary molding mold core 430.

[0079] The pre-formed plate-shaped paper tray only forms a square, hollow inner tray. The complete paper tray needs to be sealed with a bottom cap at the bottom of the inner tray to support the wine bottle. This invention provides a bottom cover assembly device 47 on the third side of the turntable mold core unit 43 to achieve automatic bottom cover assembly, which greatly optimizes the production efficiency of the wine box assembly line. The bottom cover storage structure 470 is a groove-shaped structure formed by multiple spaced bottom cover baffles. The bottom cover picking component 471 adopts a vacuum picking structure. The vacuum picking structure is relatively conventional, so it will not be described in detail here. The bottom cover feeding component 472 includes a bottom cover feeding base 4720 fixedly installed on the bottom cover assembly base 473, a bottom cover feeding motor 4721 installed on the bottom cover feeding base 4720, a bottom cover feeding rotating seat 4722 rotatably connected to the bottom cover feeding motor 4721, a bottom cover feeding cylinder 4723 installed on the bottom cover feeding rotating seat 4722, and a bottom cover feeding plate 4724 connected to the bottom cover feeding cylinder 4723. The bottom cover feeding plate 4724 is a bottom cover vacuum suction cup used to pick up the bottom cover.

[0080] The bottom cover feeding assembly 472 also includes a paper tray positioning device 4725 mounted above the secondary forming mold core 430. The paper tray positioning device 4725 includes two paper tray clamping units arranged on the left and right and able to approach each other. The two paper tray clamping units approach each other to position the paper tray so that the bottom cover can be inserted into the paper tray.

[0081] In this embodiment, the fifth body 40 is provided with a feeding conveyor unit on the fourth side of the turntable mold core unit 43. The feeding conveyor unit has a feeding conveyor channel for conveying external boxes and receiving finished paper trays released by the turntable mold core unit 43. During feeding, the corresponding secondary forming mold core 430 no longer holds the paper tray, and the folded finished paper tray falls into the feeding conveyor channel and is automatically loaded into the box carried by the feeding conveyor channel. The feeding conveyor unit can be a conventional linear conveyor mechanism such as a belt conveyor or a chain conveyor, which will not be explained in detail here.

[0082] To facilitate understanding of the present invention, the position of the secondary bending component 41 is set as the first side of the turntable mold core unit 43, while the position symmetrical to the secondary bending component 41 is set as the third side, the upper relative position of the turntable mold core unit 43 is the second side, and the lower relative position of the turntable mold core unit 43 is the fourth side.

[0083] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An automatic assembly device for paper tray inner box, characterized in that: It includes a fifth body (40), a paper tray preforming core (3) connected to the fifth body (40) and used for preforming the paperboard, a secondary bending forming core located in the fifth body (40) and used for secondary forming of the preformed paperboard, and a rotary feeding unit (42) used for flipping the preformed paperboard and transferring it into the secondary bending forming core. The paper tray preforming core (3) includes a first folding plate (3312) and a second folding plate (3313). The first folding plate (3312) and the second folding plate (3313) cooperate to form a preforming core body that is adapted to the shape and size of the inner liner of the paper tray. The first folding plate (3312) and the second folding plate (3313) are driven to move closer to each other by a folding plate driving source (3314).

2. The automatic assembly apparatus of a paper tray inner box according to claim 1, wherein: The paper tray preforming core (3) includes a fourth body (30), a preforming base (31) disposed on the fourth body (30), a paperboard supply device (32) disposed on the fourth body (30) and used to supply paperboard to the preforming base (31), and a folding device (33) disposed above the preforming base (31). The folding device (33) includes a folding base (330) fixedly disposed on the fourth body (30), a preforming core (331) movably disposed on the folding base (330), a primary bending component for bending the paperboard carried by the preforming base (31), and a primary edge folding component for folding the edge of the bent paperboard.

3. An apparatus for automatically assembling a paper tray inner box according to claim 2, wherein: The preformed mold core (331) includes a first folding slide (3310) slidably disposed on one side of the folding base (330), a second folding slide (3311) slidably disposed on the other side of the folding base (330), a first folding plate (3312) assembled on the first folding slide (3310), and a second folding plate (3313) assembled on the second folding slide (3311); the folding device (33) is further provided with a folding drive source (3314) for driving the first folding slide (3310) and the second folding slide (3311) to move closer to each other.

4. The automatic assembly apparatus of a paper tray inner box according to claim 2, wherein: The preformed base (31) includes a base body (310), a support plate (311) located in the middle of the base body (310), and two flip plates (312) rotatably located on both sides of the base body (310). The bending assembly includes two flip drive sources (313) assembled on the base body (310). Each flip drive source (313) drives the corresponding flip plate (312) to flip towards the support plate (311) so that the two sides of the cardboard are bent and preformed along the shape of the preformed core (331).

5. The automatic assembly apparatus for paper tray inner box body according to claim 1, characterized in that: The secondary bending forming core is provided with a secondary bending assembly (41) and at least one secondary forming mold core (430) that can extend into the secondary bending assembly (41).

6. The automatic assembly apparatus for paper tray inner box according to claim 1, characterized in that: The rotary feeding unit (42) includes a rotary shaft (420) rotatably mounted on the fifth body (40), a rotary drive source (421) fixedly mounted on the fifth body (40) and used to drive the rotary shaft (420) to rotate, and a plurality of feeding rotary wheels (422) mounted on the rotary shaft (420). Each feeding rotary wheel (422) is equipped with a plurality of feeding clamps (423) for clamping the pre-formed cardboard.

7. The automatic assembly equipment for the inner box of a paper tray according to claim 5, characterized in that: The secondary bending forming mechanism is further provided with a turntable mold core unit (43). The turntable mold core unit (43) includes a turntable core body (431) rotatably mounted on the fifth body (40) and a turntable mechanism drive source (432) fixedly mounted on the fifth body (40) and used to drive the turntable core body (431). The turntable core body (431) has a plurality of the secondary forming mold cores (430), and each secondary forming mold core (430) is equipped with a mold core suction cup for adsorbing paper trays.

8. The automatic assembly equipment for the inner box of a paper tray according to claim 5, characterized in that: The secondary bending assembly (41) includes two second bending units (410) arranged at intervals and in parallel. Each second bending unit (410) includes a second bending base (411) fixedly installed on the fifth body (40), a second bending plate (412) rotatably installed on the second bending base (411), and a second bending drive source (413) for driving the second bending plate (412) to flip.

9. An automatic assembly device for a paper tray inner box according to claim 5, characterized in that: The fifth body (40) has a secondary bending assembly (45) above the secondary bending assembly (41). The secondary bending assembly (45) includes a secondary bending base (450) mounted on the fifth body (40), a secondary longitudinal base (451) mounted obliquely and movably on the secondary bending base (450), a secondary bending plate (452) longitudinally slidably mounted on the secondary longitudinal base (451), a bending plate pusher (453) mounted on the secondary bending plate (452), and a rotating arm transmission source (454) hinged to the secondary bending plate (452). The rotating arm transmission source (454) is used to make the secondary bending plate (452) slide vertically up and down along the secondary longitudinal base (451), and the secondary longitudinal base (451) slide obliquely up and down along the secondary bending base (450).

10. An automatic assembly device for a paper tray inner box according to claim 7, characterized in that: The fifth body (40) is provided with a bottom cover assembly device (47) on the third side of the turntable mold core unit (43). The bottom cover assembly device (47) includes a bottom cover storage structure (470) fixedly disposed on the fifth body (40), a bottom cover picking assembly (471) disposed below the bottom cover storage structure (470) and used to pick up the bottom covers one by one, and a bottom cover feeding assembly (472) used to assemble the bottom covers picked up by the bottom cover picking assembly (471) into the paper tray carried by the forming mold core.

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