Non-return assembly for paper box stacking assembly

Abstract

The utility model discloses a non-return assembly used for a carton stacking assembly, the carton stacking assembly comprises a rack, a clamping plate assembly and a jacking assembly, the clamping plate assembly and the jacking assembly are arranged on the rack, the jacking assembly is arranged below the clamping plate assembly and used for jacking cartons into the clamping plate assembly, and at least one pair of non-return assemblies is arranged above the jacking assembly. The non-return assemblies are arranged on the machine frame, located on the two sides of the paper box respectively and used for supporting the two ends of the paper box, and are characterized in that each non-return assembly comprises a non-return plate, a mounting plate and a linear spring, the mounting plate is fixed to the machine frame, the non-return plate is slidably connected with the mounting plate, one end of the linear spring abuts against the non-return plate, and the other end of the linear spring abuts against the mounting plate; a wedge-shaped face and a supporting face are arranged at the end, away from the mounting plate, of the check plate and located on the two opposite sides of the check plate respectively. The problems that in an existing structure, the installation mode of the torsion spring is tedious, and later replacement difficulty is large are solved.

Description

Technical Field

[0001] This utility model relates to the field of paper box palletizing technology, and in particular to a check valve component for paper box palletizing assemblies. Background Technology

[0002] A carton palletizing device typically includes a conveying assembly for outputting cartons, a lifting assembly at the end of the conveying assembly, and a check assembly above the lifting assembly. After the conveying assembly delivers the cartons to the lifting assembly, the lifting assembly lifts the cartons onto the check assembly. The lifting assembly reciprocates, stacking cartons layer by layer onto the check assembly to achieve the purpose of palletizing cartons.

[0003] The existing check valve assembly consists of a rotating shaft, a check block rotating around the shaft, and a torsion spring that pushes the check block back to its original position. When an object passes through the assembly, it pushes the check block to rotate around the shaft, simultaneously tightening the torsion spring. After the object passes, the torsion spring releases its elasticity, causing the check block to rotate back to its original position. At this point, the check block supports the object and prevents it from falling. However, the torsion spring structure requires fixed points at both ends for support, which complicates installation. Secondly, the torsion spring structure may experience fatigue and breakage during long-term use. When replacing the torsion spring, the entire check valve assembly must be disassembled, replaced, and then reassembled, making the process cumbersome and increasing future maintenance costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a check valve assembly for cardboard box palletizing components, which solves the problems of cumbersome torsion spring installation and difficult replacement in existing structures.

[0005] This utility model is achieved through the following technical solution:

[0006] A check valve assembly for a carton palletizing assembly, the carton palletizing assembly including a frame and a clamping plate assembly and a lifting assembly disposed on the frame, the lifting assembly being disposed below the clamping plate assembly for lifting the carton into the clamping plate assembly, the check valve assembly being located above the lifting assembly and having at least one pair, the pair of check valve assemblies being disposed on the frame and respectively located on both sides of the carton for supporting both ends of the carton, the check valve assembly including a check plate, a mounting plate and a linear spring, the mounting plate being fixed to the frame, the check valve being slidably connected to the mounting plate, one end of the linear spring abutting against the check valve and the other end abutting against the mounting plate, and the end of the check valve away from the mounting plate being provided with a wedge-shaped surface and a supporting surface, the wedge-shaped surface and the supporting surface being respectively located on opposite sides of the check valve;

[0007] When the lifting assembly drives the paper box to rise, the paper box slides in connection with the wedge-shaped surface, and the check plate moves away from the paper box against the elastic force of the linear spring. After the paper box passes the check plate, the check plate returns to its original position under the elastic force of the linear spring. At this time, the support surface supports the paper box.

[0008] Furthermore, the check plate is integrally formed and includes a fixing part and a check part. The fixing part is slidably connected to the mounting plate, and the wedge-shaped surface and the supporting surface are formed on opposite sides of the check part.

[0009] Furthermore, the anti-return portion has a first storage groove recessed on the side facing the mounting plate, and the mounting plate has a second storage groove that is directly opposite to the first storage groove. One end of the linear spring is stored in the first storage groove and the other end is stored in the second storage groove.

[0010] Furthermore, it also includes a slider, which includes a fifth slider and a fifth slide rail. The fifth slider is fixed to the side of the fixing part facing the mounting plate, and the fifth slide rail is fixed to the mounting plate. The axial direction of the fifth slide rail is consistent with the extension and contraction direction of the linear spring, and the fifth slider and the fifth slide rail are slidably connected.

[0011] Furthermore, the upper surface of the mounting plate is recessed to form a mounting groove, the fifth slide rail is located in the mounting groove, and the fifth slider is at least partially located outside the mounting groove.

[0012] Furthermore, the fixing part is spaced apart from the upper surface of the mounting plate.

[0013] Furthermore, the first side of the mounting groove is spaced apart from the check valve.

[0014] Furthermore, the fixing part is provided with a slot for reducing weight.

[0015] Furthermore, the mounting plate has screw holes, and the frame has a recessed fixing groove. The screw passes through the screw holes and abuts against the bottom wall of the fixing groove, and the axial direction of the fixing groove is perpendicular to the extension and contraction direction of the linear spring.

[0016] Furthermore, the screw hole is rectangular, and the axial direction of the screw hole is consistent with the extension and contraction direction of the linear spring.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] 1. The reset action of the check plate is achieved by setting a linear spring. One end of the linear spring abuts against the check plate and the other end abuts against the mounting plate, which solves the problem of cumbersome installation method of torsion spring in the existing structure and the difficulty of replacement later.

[0019] 2. By setting the second clamping plate as an adjustable movable structure, the distance between the second clamping plate and the first clamping plate can be flexibly adjusted to adapt to the stacking requirements of different sized cardboard boxes and effectively prevent the cardboard boxes from tipping over when the number of layers is too high.

[0020] 3. By setting the fourth guide plate to rotate between the first and second positions, the precise positioning and smooth introduction of the carton in different states are achieved, ensuring that the packing process is efficient and stable. This solves the problem of the carton and the side cover abutting each other caused by the bottom cover of the large carton being raised. The optimized guide plate structure ensures that the carton enters the large carton smoothly and avoids damage. Attached Figure Description

[0021] Figure 1 Schematic diagram of a cardboard box packing device Figure 1 ;

[0022] Figure 2 Schematic diagram of a cardboard box packing device Figure 2 ;

[0023] Figure 3 This is a structural schematic diagram of the pusher plate assembly;

[0024] Figure 4 A schematic diagram of the overall structure of the cardboard box packing device;

[0025] Figure 5 This is a structural diagram of the palletizing assembly;

[0026] Figure 6 This is a structural diagram of the moving component;

[0027] Figure 7 This is a schematic diagram of the lifting assembly.

[0028] Figure 8 A schematic diagram of the structure of the stop-return component;

[0029] Figure 9 Explosion of the back component Figure 1 ;

[0030] Figure 10 Explosion of the back component Figure 2 .

[0031] 100. Frame; 110. First slide rail; 200. Slide table assembly; 210. First path segment; 220. Second path segment; 300. Moving assembly; 310. First moving module; 311. Push cylinder; 312. Support plate; 313. Adjusting cylinder; 314. First push plate; 315. Third slide rail; 316. Third slider; 320. Second moving module; 321. Third single-axis motion module; 322. Third sliding block; 323. Second push plate; 400. Lifting assembly; 410. Lifting platform; 420. Lifting drive module; 421. 430. Lifting cylinder; 431. Guide assembly; 432. Second slider; 433. Second slide rail; 434. Fixing plate; 435. Connecting plate; 440. Horizontal drive module; 441. Second single-axis motion module; 442. Second sliding block; 443. Sliding plate; 444. Fourth slider; 500. Check valve assembly; 510. Check valve plate; 511. Wedge-shaped surface; 512. Support surface; 513. Fixing part; 516. Slot; 514. Check valve part; 515. First storage slot; 520. Mounting plate; 521. Second storage slot; 522. Mounting slot; 52 3. First side; 524. Screw hole; 530. Linear spring; 540. Sliding component; 541. Fifth slider; 542. Fifth slide rail; 600. Clamping plate assembly; 610. Drive assembly; 611. First single-axis motion module; 612. First sliding block; 613. Movable bracket; 614. First slider; 620. First clamping plate; 630. Second clamping plate; 700. Push plate assembly; 710. Mounting bracket; 711. Support slider; 720. Power cylinder; 730. Push plate; 731. Support slide rail; 732. Hole; 800. Guide plate Components; 810, First guide plate; 820, Second guide plate; 830, Third guide plate; 840, Fourth guide plate; 850, Rotary actuation assembly; 851, Power assembly; 853, Telescopic cylinder; 854, Connecting block; 852, Rotating shaft; 860, Support platform; 870, Adjustment cylinder; 900, Cardboard box; 910, Carton; 911, Carton body; 912, Left side cover; 913, Right side cover; 914, Upper side cover; 915, Lower side cover; 920, Flipping assembly; 921, Actuation cylinder; 922, Flipping frame; 923, Flipping plate. Detailed Implementation

[0032] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] like Figures 1-3 As shown, a carton packing device according to an embodiment of the present invention is used to pack carton 900 into carton 910. The carton 910 includes a carton body 911 that accommodates multiple cartons 900, and a left side cover 912, a right side cover 913, an upper side cover 914, and a lower side cover 915 located at the opening of the carton body 911. The carton packing device includes a carton stacking assembly, a pusher assembly 700, and a guide plate assembly 800. The carton stacking assembly is mounted on a frame 100 for stacking multiple cartons 900. The pusher assembly 700 is used to push the multiple cartons 900 into the carton 910. The guide plate assembly 800 includes a first guide plate 810, a second guide plate 820, and a third guide plate 830 located at the outlet of the carton stacking assembly. The first guide plate 810, the second guide plate 820, and the third guide plate 830 respectively support the inner side of the left side cover 912, the inner side of the right side cover 913, and the inner side of the upper side cover 914.

[0034] The guide plate assembly 800 also includes a fourth guide plate 840 and a rotary actuation assembly 850. The fourth guide plate 840 is disposed at the outlet of the carton palletizing assembly, and the rotary actuation assembly 850 is used to drive the fourth guide plate 840 to rotate between a first position and a second position. When the fourth guide plate 840 is in the first position, the fourth guide plate 840 is in a vertical state, and at this time, the fourth guide plate 840 is in clearance fit with the side of the carton 900. When the fourth guide plate 840 is in the second position, the fourth guide plate 840 is in a horizontal state, and the fourth guide plate 840 is in contact with the inner side of the lower cover 915. At this time, the pusher assembly 700 pushes the stacked multiple cartons 900 into the carton 910 through the fourth guide plate 840. During the stacking process of cardboard boxes 900, the rotary actuation component 850 controls the fourth guide plate 840 to be in the first position, ensuring stable stacking of cardboard boxes 900. After stacking is completed, the rotary actuation component 850 drives the fourth guide plate 840 to the second position. At this time, the fourth guide plate 840 can open the lower side cover 915 of the carton 910, making it easier for the pusher assembly 700 to smoothly push the cardboard box 900 into the carton 910. Then, the pusher assembly 700 starts and smoothly pushes the cardboard box 900 into the carton 910, completing the packing process. By setting the fourth guide plate 840 to rotate between the first and second positions, the precise positioning and smooth introduction of the cardboard box 900 in different states are achieved, ensuring that the packing process is efficient and stable. This solves the problem of cardboard boxes abutting against the side cover caused by the lower side cover of the large carton being tilted up. By optimizing the guide plate structure, the cardboard box is ensured to smoothly enter the large carton, avoiding damage.

[0035] The rotary actuation assembly 850 includes a power assembly 851 and a rotating shaft 852. The rotating shaft 852 is rotatably mounted on the frame 100, and a fourth guide plate 840 is fixed to the rotating shaft 852. The power assembly 851 drives the rotating shaft 852 to rotate. Specifically, the power assembly 851 includes a telescopic cylinder 853 and a connecting block 854. The telescopic cylinder 853 is fixed to the frame 100, and one end of the connecting block 854 is fixedly connected to the telescopic cylinder 853, while the other end is fixedly connected to the end of the rotating shaft 852.

[0036] The guide plate assembly 800 also includes a support platform 860, which is fixed to the frame 100 to support the lower cover 915 of the carton 910. When the fourth guide plate 840 is in the second position, it presses the lower cover 915 of the carton 910 onto the support platform 860. The support platform 860 also limits the second guide plate 820, preventing it from rotating excessively and affecting the entry of the carton 900 into the carton 910. By setting the support platform 860, it is ensured that the fourth guide plate 840 is in a horizontal state when it is in the second position, ensuring that the carton 900 is pushed into the carton 910 smoothly and without obstruction. At the same time, the limiting function of the support platform 860 effectively prevents the second guide plate 820 from malfunctioning, further improving the stability and accuracy of the packing process.

[0037] The guide plate assembly 800 also includes a pair of adjusting cylinders 870 fixed on the frame 100. The pair of adjusting cylinders 870 move between a limiting position and a guiding position with the first guide plate 810 and the second guide plate 820, respectively. During the stacking of cartons 900, the pair of adjusting cylinders 870 control the first guide plate 810 and the second guide plate 820 to be in the limiting position. At this time, the first guide plate 810 and the second guide plate 820 are spaced apart and fitted to the side of the cartons 900 to prevent the cartons 900 from shifting or tilting during stacking, ensuring that each carton can be accurately aligned and smoothly slide into the carton, thereby greatly improving the packing efficiency and the stability of the overall production process. During the carton packing process, the pair of adjusting cylinders 870 control the first guide plate 810 and the second guide plate 820 to be in the guiding position. At this time, the cartons 900 can enter the carton 910 between the first guide plate 810 and the second guide plate 820.

[0038] like Figure 3 As shown, the pusher assembly 700 includes a mounting bracket 710, a power cylinder 720 fixed on the mounting bracket 710, and a pusher plate 730 fixed on the power cylinder 720. Furthermore, a support slider 711 is fixed on the mounting bracket 710, and a support slide rail 731 is fixed on the pusher plate 730, with the support slide rail 731 slidably connected to the support slider 711. Upon startup, the power cylinder 720 drives the pusher plate 730 to move smoothly along the axial direction of the support slide rail 731, improving packing accuracy.

[0039] The push plate 730 has holes 732 for weight reduction.

[0040] The carton packing device also includes a flipping assembly 920, which flips the carton 910 to the packing station, at which point the opening of the carton 910 is directly opposite the box 900. Specifically, the flipping assembly 920 includes an actuating cylinder 921 and a flipping frame 922. The actuating cylinder 921 is fixed to the frame 100, and the flipping frame 922 is rotatably mounted on the frame 100. The actuating cylinder 921 drives the flipping frame 922 to rotate between the loading station and the packing station.

[0041] The flipping frame 922 includes multiple flipping plates 923 arranged side by side, and the flipping plates 923 are in an "L" shape.

[0042] like Figures 4-7 As shown, the carton palletizing assembly includes a frame 100, a slide assembly 200, a moving assembly 300, a lifting assembly 400, a clamping plate assembly 600, and a check assembly 500. The slide assembly 200 is mounted on the frame 100, and the moving assembly 300 is also mounted on the frame 100 for pushing the carton 900 on the slide assembly 200. The clamping plate assembly 600 and the lifting assembly 400 are both mounted on the frame 100. The lifting assembly 400 is positioned below the clamping plate assembly 600 to lift the carton 900 into the clamping plate assembly 600. The lifting assembly 400 includes a lifting platform 410 and a lifting drive module. 420. A lifting drive module 420 is mounted on the frame 100. A lifting platform 410 is connected to the lifting drive module 420 to receive the cardboard box 900 pushed out by the moving component 300. The clamping plate assembly 600 includes a drive component 610 fixed to the frame 100 and a first clamping plate 620 and a second clamping plate 630 arranged opposite each other. A receiving space for stacking the cardboard box 900 is formed between the first clamping plate 620 and the second clamping plate 630. The first clamping plate 620 is fixedly connected to the frame 100. The drive component 610 is used to drive the second clamping plate 630 to move closer to or further away from the first clamping plate 620. By setting the second clamping plate 630 as an adjustable movable structure, the distance between the second clamping plate 630 and the first clamping plate 620 can be flexibly adjusted to adapt to the stacking requirements of cardboard boxes of different sizes, effectively preventing the problem of tipping over when the number of cardboard box layers is too high.

[0043] Specifically, the drive assembly 610 includes a first single-axis motion module 611 and a movable bracket 613. The first single-axis motion module 611 is fixed on the frame 100. One end of the movable bracket 613 is fixedly connected to the first sliding block 612 on the first single-axis motion module 611. The other end of the movable bracket 613 is provided with a first slider 614, and the first slider 614 is slidably connected to the first slide rail 110 on the frame 100.

[0044] The lifting drive module 420 includes a lifting cylinder 421, which is used to drive the lifting platform 410 to rise or fall.

[0045] The lifting assembly 400 also includes a guide assembly 430, which includes a pair of second sliders 431 and a pair of second slide rails 432 corresponding to each of the second sliders 431. The second sliders 431 are mounted on the frame 100, and the second slide rails 432 are arranged along the axial direction of the lifting cylinder 421. The pair of second slide rails 432 are located on both sides of the lifting cylinder 421 and are fixedly connected to the lifting platform 410. By setting the mutually cooperating second sliders 431 and second slide rails 432, the lifting platform 410 is ensured to operate stably during lifting, preventing unstable cardboard box stacking due to vibration or offset, and improving overall work efficiency and safety.

[0046] The guide assembly 430 also includes a pair of fixed plates 433 and a connecting plate 434 connected to both fixed plates 433. Both the fixed plates 433 and the connecting plate 434 are fixedly connected to the lifting platform 410, and the fixed plates 433 are fixedly connected to a pair of second slide rails 432 in a one-to-one correspondence. This further enhances the stability of the lifting platform 410 structure.

[0047] The lifting assembly 400 also includes a horizontal drive module 440, which drives the lifting drive module 420 to reciprocate along the direction of the first slide rail 110. By setting the horizontal drive module 440 to drive the lifting assembly 400 to move precisely along the direction of the first slide rail 110, it is ensured that when stacking cartons of different sizes, the lifting platform 410 can be adjusted to be located in the exact center of the cartons, thereby achieving precise stacking of cartons, avoiding offset and tilting, improving the neatness and stability of stacking, and ensuring the convenience and safety of subsequent handling and storage.

[0048] Specifically, the horizontal drive module 440 includes a second single-axis motion module 441 fixed on the frame 100 and a sliding plate 443. The sliding plate 443 is fixedly connected to a second sliding block 442 on the second single-axis motion module 441, and a fourth slider 444 slidably connected to the first slide rail 110 is provided on the sliding plate 443. The lifting cylinder 421 and the second slider 431 are both fixed on the sliding plate 443. Additionally, see reference... Figure 3 The mounting bracket 710 on the pusher assembly 700 is also fixed on the second sliding block 442 on the second single-axis motion module 441, so that the pusher assembly 700 can flexibly adjust its position according to different carton sizes, ensuring that each push is accurately aligned to the middle position of the stacked carton, ensuring that the carton after the overall stacking moves smoothly into the carton during the packing process, avoiding the carton from tipping over or being damaged due to positional deviation, and further improving packing efficiency and product quality.

[0049] The slide assembly 200 includes a first path segment 210 and a second path segment 220 that are perpendicular to each other, and the lifting assembly 400 is disposed at the exit of the second path segment 220.

[0050] The moving assembly 300 includes a first moving module 310 and a second moving module 320. The first moving module 310 is used to push multiple paper boxes 900 to move along the axial direction of the first path segment 210. The first moving module 310 includes a pushing cylinder 311, a support plate 312, an adjusting cylinder 313, and a first push plate 314. The pushing cylinders 311 are all fixed on the frame 100. The support plate 312 is fixedly connected to the pushing cylinders 311. The first push plate 314 is fixedly connected to the adjusting cylinder 313. The adjusting cylinder 313 is fixed on the support plate 312 and is used to drive the first push plate 314 to move in the vertical direction. The second moving module 320 is used to push multiple paper boxes 900 to move along the axial direction of the second path segment 220. The second moving module 320 includes a third single-axis motion module 321 and a second push plate 323. The second push plate 323 is connected to a third sliding block 322 on the third single-axis motion module 321.

[0051] The first moving module 310 also includes a pair of third slide rails 315 and a pair of third sliders 316. The pair of third slide rails 315 are distributed on both sides of the push cylinder 311 and are fixedly connected to the frame 100. The pair of third sliders 316 correspond one-to-one with the pair of third slide rails 315 and are slidably connected. The pair of third sliders 316 are distributed and fixed on both sides of the support plate 312.

[0052] like Figures 8-10 As shown, the carton palletizing assembly also includes check valve components 500 located above the lifting assembly 400, and at least one pair of them are provided. The pair of check valve components 500 are disposed on the frame 100 and respectively located on both sides of the carton 900 to support the two ends of the carton 900. The pair of check valve components 500 are respectively fixed on the first clamping plate 620 and the second clamping plate 630, and the pair of check valve components 500 are located on the same horizontal plane to support the carton 900.

[0053] The check valve assembly 500 includes a check valve plate 510, a mounting plate 520, and a linear spring 530. The mounting plate 520 is fixed on the frame 100. The check valve plate 510 is slidably connected to the mounting plate 520. One end of the linear spring 530 abuts against the check valve plate 510, and the other end abuts against the mounting plate 520. The end of the check valve plate 510 away from the mounting plate 520 is provided with a wedge-shaped surface 511 and a support surface 512, which are located on opposite sides of the check valve plate 510. When the lifting assembly 400 drives the paper box 900 to rise, the paper box 900 is slidably connected to the wedge-shaped surface 511, and the check valve plate 510 moves away from the paper box 900 against the elastic force of the linear spring 530. After the paper box 900 passes the check valve plate 510, the check valve plate 510 is reset under the elastic force of the linear spring 530. At this time, the support surface 512 supports the paper box 900. By setting a linear spring 530 to achieve the reset action of the check plate 510, the problem of cumbersome installation method and difficult replacement of torsion springs in the existing structure is solved.

[0054] The check plate 510 is integrally formed and includes a fixing part 513 and a check part 514. The fixing part 513 is slidably connected to the mounting plate 520. The wedge-shaped surface 511 and the support surface 512 are formed on opposite sides of the check part 514.

[0055] The check valve 514 has a recessed first receiving groove 515 on the side facing the mounting plate 520. The mounting plate 520 has a second receiving groove 521 directly opposite the first receiving groove 515. One end of the linear spring 530 is received in the first receiving groove 515, and the other end is received in the second receiving groove 521. The linear spring 530 requires no additional fasteners during installation, simplifying the assembly process and improving maintenance efficiency. When the linear spring 530 needs to be replaced later, simply remove both ends of the spring from the receiving grooves and insert a new spring; the operation is simple and greatly reduces downtime. Alternatively, the spring 530 can be limited by setting up columns on the check valve 514 and the mounting plate 520. Simply insert both ends of the linear spring 530 into the columns to ensure stable spring position. The receiving groove combined with the column can also be used.

[0056] The anti-return assembly also includes a slider 540, which includes a fifth slider 541 and a fifth slide rail 542. The fifth slider 541 is fixed on the side of the fixing part 513 facing the mounting plate 520, and the fifth slide rail 542 is fixed on the mounting plate 520. The axial direction of the fifth slide rail 542 is consistent with the extension and retraction direction of the linear spring 530, and the fifth slider 541 and the fifth slide rail 542 are slidably connected.

[0057] The upper surface of the mounting plate 520 has a recessed mounting groove 522, the fifth slide rail 542 is located in the mounting groove 522, and the fifth slider 541 is at least partially located outside the mounting groove 522.

[0058] The fixing part 513 is spaced apart from the upper surface of the mounting plate 520. This is to prevent frictional resistance between the fixing part 513 and the mounting plate 520, thereby reducing the reset sensitivity of the check plate 510.

[0059] The first side 523 forming the mounting groove 522 is spaced apart from the check portion 514. This prevents the mounting plate 520 from obstructing the movement of the check plate 510.

[0060] The fixing part 513 has a slot 516 for reducing weight.

[0061] The mounting plate 520 has screw holes 524, and the frame 100 has a recessed fixing groove. The screw passes through the screw holes 524 and abuts against the bottom wall of the fixing groove, and the axial direction of the fixing groove is perpendicular to the extension and retraction direction of the linear spring 530. This facilitates the adjustment of the position of the mounting plate 520.

[0062] The screw hole 524 is rectangular, and its axial direction is consistent with the extension and retraction direction of the linear spring 530. This facilitates the adjustment of the position of the mounting plate 520.

[0063] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A check valve assembly for a carton palletizing assembly, the carton palletizing assembly comprising a frame (100) and a clamping plate assembly (600) and a lifting assembly (400) disposed on the frame (100), the lifting assembly (400) being disposed below the clamping plate assembly (600) for lifting a carton (900) into the clamping plate assembly (600), the check valve assembly (500) being located above the lifting assembly (400) and being provided in at least one pair, the pair of check valve assemblies (500) being disposed on the frame (100) and respectively located on both sides of the carton (900) for supporting both ends of the carton (900), characterized in that, The check valve assembly (500) includes a check valve plate (510), a mounting plate (520), and a linear spring (530). The mounting plate (520) is fixed on the frame (100). The check valve plate (510) is slidably connected to the mounting plate (520). One end of the linear spring (530) abuts against the check valve plate (510), and the other end abuts against the mounting plate (520). A wedge-shaped surface (511) and a support surface (512) are provided on one end of the check valve plate (510) away from the mounting plate (520). The wedge-shaped surface (511) and the support surface (512) are located on opposite sides of the check valve plate (510). When the lifting assembly (400) drives the paper box (900) to rise, the paper box (900) is slidably connected to the wedge surface (511), and the check plate (510) moves away from the paper box (900) against the elastic force of the linear spring (530); after the paper box (900) passes the check plate (510), the check plate (510) is reset under the elastic force of the linear spring (530), at which time the support surface (512) supports the paper box (900).

2. The non-return assembly according to claim 1, characterized in that The check plate (510) is integrally formed and includes a fixing part (513) and a check part (514). The fixing part (513) is slidably connected to the mounting plate (520). The wedge-shaped surface (511) and the supporting surface (512) are formed on opposite sides of the check part (514).

3. The non-return assembly according to claim 2, characterized in that The check valve (514) has a first storage groove (515) recessed on the side facing the mounting plate (520). The mounting plate (520) has a second storage groove (521) that is directly opposite to the first storage groove (515). One end of the linear spring (530) is stored in the first storage groove (515) and the other end is stored in the second storage groove (521).

4. The non-return assembly of claim 2, wherein It also includes a slider (540), which includes a fifth slider (541) and a fifth slide rail (542). The fifth slider (541) is fixed on the side of the fixing part (513) facing the mounting plate (520), and the fifth slide rail (542) is fixed on the mounting plate (520). The axial direction of the fifth slide rail (542) is consistent with the extension and retraction direction of the linear spring (530), and the fifth slider (541) and the fifth slide rail (542) are slidably connected.

5. The non-return assembly according to claim 4, characterized in that The upper surface of the mounting plate (520) is recessed to form a mounting groove (522), the fifth slide rail (542) is located in the mounting groove (522), and the fifth slider (541) is at least partially located outside the mounting groove (522).

6. The non-return assembly of claim 5, wherein The fixing part (513) is spaced apart from the upper surface of the mounting plate (520).

7. The non-return assembly of claim 5, wherein The first side (523) forming the mounting groove (522) is spaced apart from the check portion (514).

8. The check valve assembly according to claim 2, characterized in that, The fixing part (513) is provided with a slot (516) for reducing weight.

9. The non-return assembly of claim 1, wherein The mounting plate (520) has screw holes (524), and the frame (100) has a recessed fixing groove. The screw passes through the screw holes (524) and abuts against the bottom wall of the fixing groove. The axial direction of the fixing groove is perpendicular to the extension and retraction direction of the linear spring (530).

10. The non-return assembly of claim 9, wherein The screw hole (524) is rectangular, and the axial direction of the screw hole (524) is consistent with the extension and retraction direction of the linear spring (530).

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