A packaging cardboard stacking device

Abstract

The present invention discloses a packaging cardboard stacking device, which belongs to the field of automatic palletizing technology. It comprises: a lifting device is fixedly connected to the upper side of a crossbeam, a pair of sliding blocks are slidably installed on the lower side of the crossbeam, and a straightening assembly is fixed under the sliding block. Among them, the straightening assembly comprises: a base frame is fixedly connected to the lower side of the sliding block; the upper optical axis is horizontally arranged and fixedly connected to the base frame at both ends; the middle lead screw is horizontally arranged below the upper optical axis and rotatably connected to the base frame at both ends; the lower rotating shaft is horizontally arranged below the middle lead screw and rotatably connected to the base frame at both ends; a plurality of parallel sliding frames are slidably installed on the upper optical axis, the middle lead screw and the lower rotating shaft respectively; and a straightening belt driven by the lower rotating shaft is installed on the sliding frame. When the present invention is working, the straightening belt gradually rises while rotating, and can gradually straighten the cardboard, so that each cardboard is aligned, thereby improving the neatness and stability of the stacking, and avoiding quality problems such as creases, broken edges and damage caused by direct squeezing of the cardboard by traditional baffles.

Description

Technical Field

[0001] The invention relates to the technical field of automatic palletizing, and in particular to a packaging cardboard stacking device. Background Art

[0002] In the packaging industry, cardboard stacking is a crucial link, which is directly related to the efficiency and quality of product packaging. Traditional packaging cardboard stacking devices usually use baffles that move repeatedly on both sides to squeeze the gradually stacked cardboard in the middle to achieve cardboard alignment. This method has the following shortcomings in actual application:

[0003] The baffle is in direct contact with the cardboard, which has a certain impact force, which can easily cause creases, broken edges or even damage to the side of the cardboard, affecting the overall quality of the product;

[0004] When operating the traditional baffle extrusion method, the control mechanism needs to move the baffle repeatedly, which increases the complexity of the structure and the uncertainty of force control, and debugging is more troublesome. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the present invention provides a packaging cardboard stacking device.

[0006] The present invention adopts the following technical solution: a packaging cardboard stacking device, comprising:

[0007] A crossbeam, the upper side of which is fixedly connected with a lifting device;

[0008] A pair of sliding blocks are respectively slidably mounted on the lower side of the crossbeam;

[0009] Two symmetrically arranged straightening components are disposed on both sides of the paperboard and are arranged one by one on the lower side of the sliding block;

[0010] Wherein, the righting assembly comprises:

[0011] A base frame, fixedly connected to the lower side of the sliding block;

[0012] An upper optical axis, arranged horizontally and fixedly connected to the base frame at both ends;

[0013] A middle lead screw is horizontally arranged below the upper optical axis and its two ends are rotatably connected to the base frame; one end of the middle lead screw is connected to a first driver;

[0014] A lower rotating shaft is horizontally arranged below the middle lead screw and its two ends are rotatably connected to the base frame; one end of the lower rotating shaft is connected to a second driver;

[0015] A plurality of parallel sliding frames are respectively slidably mounted on the upper optical axis, the middle lead screw and the lower rotating shaft; a straightening belt driven by the lower rotating shaft is mounted on the sliding frame, and the straightening belt comprises a vertical portion on a side close to the cardboard, and an inclined portion on the upper side of the vertical portion is inclined toward a side away from the cardboard.

[0016] Preferably, one end of the base frame is an inlet end of the paperboard, and the first driver and the second driver are arranged at an end of the base frame away from the inlet end.

[0017] Preferably: the sliding frame further comprises:

[0018] A pair of side plates, the two side plates are passed through the upper optical axis, the middle lead screw and the lower rotating axis;

[0019] An upper connecting cylinder is fixedly connected between the two side plates; the upper connecting cylinder is slidably sleeved on the upper optical axis, and an upper pulley is rotatably mounted on the upper connecting cylinder;

[0020] A middle connecting tube is fixedly connected between the two side plates; the middle connecting tube is sleeved on the middle lead screw through a threaded connection, and a middle pulley is rotatably mounted on the middle connecting tube;

[0021] A lower pulley is arranged between the two side plates; the lower pulley is sleeved on the lower rotating shaft, and the lower pulley and the lower rotating shaft are connected by a key;

[0022] The straightening belt is installed on the upper pulley, the middle pulley and the lower pulley.

[0023] Preferably, the middle screw is provided with a plurality of sections of external threads corresponding one-to-one to the middle connecting tube of the sliding frame, and the pitch of the plurality of sections of the external threads decreases as they are closer to the inlet end.

[0024] Preferably, the lower rotating shaft is provided with a plurality of long keyways corresponding one to one with the external threads on the middle lead screw.

[0025] Preferably, a rear baffle is fixed to a side of the sliding frame farthest from the inlet end.

[0026] Preferably: an upper pressing plate is fixed on one side of the crossbeam and is pressed above the inlet end of the base frame;

[0027] The side of the upper pressing plate close to the inlet end is inclined upward, and a wedge-shaped sealing plate in contact with the lower surface of the upper pressing plate is fixed on the upper side of the base frame.

[0028] Preferably: a pair of adjusting oil cylinders arranged along the length direction of the cross beam are fixed to the lower side of the cross beam; the piston rod ends of the two adjusting oil cylinders are fixedly connected to the sliding blocks on the corresponding sides.

[0029] Preferably: the lower end of the sliding block has a flange plate for fixed connection with the base frame, and the upper end of the sliding block has a dovetail groove for sliding connection with the crossbeam; a square hole is opened in the middle of the sliding block, and a connecting seat is fixed in the square hole, and the connecting seat is fixedly connected to the piston rod end of the adjusting cylinder.

[0030] The beneficial effects of the present invention are:

[0031] When working, the straightening belt gradually rises while rotating, which can gradually straighten the cardboard, align each cardboard, and improve the neatness and stability of the stacking; this straightening method avoids quality problems such as creases, broken edges and damage caused by direct squeezing of cardboard by traditional baffles;

[0032] By adjusting the oil cylinder and the lifting device, the spacing and height between the two straightening components can be easily adjusted to adapt to cardboards of different lengths and stacking heights; the overall width of each sliding frame can also be adjusted through the first drive and the middle screw to adapt to the width of the cardboard, thereby improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 The present invention is a three-dimensional diagram of a packaging cardboard stacking device.

[0035] Figure 2 The present invention is a front view of a packaging cardboard stacking device.

[0036] Figure 3 for Figure 2 Middle AA section view.

[0037] Figure 4 The figure is a left side view of a packaging cardboard stacking device of the present invention.

[0038] Figure 5 It is a stereoscopic diagram of the righting assembly in the present invention.

[0039] Figure 6 It is an exploded view of the straightening assembly in the present invention.

[0040] Figure 7 The present invention is a schematic diagram of the working state of a packaging cardboard stacking device.

[0041] Description of reference numerals:

[0042] 1. Beam; 11. Lifting device; 12. Adjusting cylinder;

[0043] 2. Sliding block; 21. Connecting seat;

[0044] 3. Straightening assembly; 31. Base frame; 311. Wedge-shaped sealing plate; 312. Strip-shaped sealing plate; 32. Upper optical axis; 33. Middle lead screw; 331. External thread; 34. Lower rotating shaft; 341. Long keyway; 35. First driver; 36. Second driver;

[0045] 4. Upper pressing plate;

[0046] 5. Sliding frame; 51. Straightening belt; 511. Vertical part; 512. Inclined part; 52. Side plate; 53. Upper connecting cylinder; 531. Upper pulley; 54. Middle connecting cylinder; 541. Middle pulley; 55. Lower pulley;

[0047] 6. Cardboard;

[0048] 7. Tailgate. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1:

[0051] like Figures 1 to 4 As shown, the present invention provides a packaging cardboard stacking device, which mainly includes a crossbeam 1 and two straightening assemblies 3 slidably installed under the crossbeam 1. The two straightening assemblies 3 are symmetrically arranged, and the cardboard 6 enters from one end between the two straightening assemblies 3 and is stacked between the two straightening assemblies 3, and the straightening assemblies 3 keep the cardboard 6 aligned up and down.

[0052] Recombination Figure 5 and Figure 6 As shown, the straightening assembly 3 mainly includes a base frame 31, which is a box-type structure with an inner side open. An upper optical axis 32, a middle screw 33 and a lower rotating shaft 34 are horizontally arranged in sequence from top to bottom on the base frame 31, and three sliding frames 5 are respectively inserted into the upper optical axis 32, the middle screw 33 and the lower rotating shaft 34.

[0053] The end of the base frame 31 for the paperboard 6 to enter is the inlet end, that is, Figure 5 The left side of the base frame 31 is shown;

[0054] The two ends of the upper optical axis 32 are fixedly connected to the two ends of the base frame 31, and the upper optical axis 32 plays a guiding role for the sliding frame 5;

[0055] The middle lead screw 33 is located below the upper optical axis 32, and the two ends of the middle lead screw 33 are rotatably connected to the two ends of the base frame 31. The right end of the middle lead screw 33 is fixedly connected to a first driver 35, which is fixed to the right side of the base frame 31 and is a stepping motor. The first driver 35 and the middle lead screw 33 are used to drive the sliding frame 5 to move along the upper optical axis 32;

[0056] The lower rotating shaft 34 is located below the middle lead screw 33, and the two ends of the lower rotating shaft 34 are rotatably connected to the two ends of the base frame 31. The right end of the lower rotating shaft 34 is fixedly connected to the second driver 36, and the second driver 36 is fixed to the right side of the base frame 31. The second driver 36 is a stepping motor. The second driver 36 and the lower rotating shaft 34 are used to drive the lower pulley 55 in the sliding frame 5 to rotate, and the lower rotating shaft 34 also guides the sliding frame 5.

[0057] In this embodiment, the structures of the three sliding frames 5 are similar, and the sliding frame 5 in the middle position is now taken as an example for explanation:

[0058] The sliding frame 5 includes two symmetrical side plates 52, and the upper, middle and lower parts of the side plates 52 are respectively provided with opposite through holes;

[0059] The two ends of the upper connecting cylinder 53 are fixed in the through holes on the upper part of the two side plates 52, so that the two side plates 52 are fixed as one. The upper connecting cylinder 53 is slidably mounted on the upper optical shaft 32, and the upper pulley 531 is rotatably mounted on the upper connecting cylinder 53;

[0060] The two ends of the middle connecting tube 54 are fixed in the through holes in the middle of the two side plates 52, so that the two side plates 52 are fixed as one. The middle connecting tube 54 is sleeved on the middle lead screw 33 and is threadedly connected to the middle lead screw 33. The middle pulley 541 is rotatably mounted on the middle connecting tube 54;

[0061] A sliding sleeve is installed in each through hole at the lower part of the two side plates 52, and the sliding sleeve is slidably mounted on the lower rotating shaft 34. A lower pulley 55 is arranged between the two sliding sleeves, and the lower pulley 55 is mounted on the lower rotating shaft 34 and connected to the lower rotating shaft 34 through a key. The lower pulley 55 is driven by the lower rotating shaft 34 and can also slide along the lower rotating shaft 34;

[0062] The straightening belt 51 is mounted on the upper pulley 531, the middle pulley 541 and the lower pulley 55, and is driven by the lower pulley 55. The middle pulley 541 and the lower pulley 55 are vertically opposite, and the upper pulley 531 is inclined toward the side away from the paperboard 6, so that the side of the straightening belt 51 close to the paperboard 6 forms a vertical portion 511 and an inclined portion 512. The upper end of the base frame 31 has a strip sealing plate 312 extending downward, and the strip sealing plate 312 is covered at the upper end of the inclined portion 512 to prevent the paperboard 6 from entering the upper end of the inclined portion 512.

[0063] like Figure 5 and Figure 6 As shown, the spacing between the three sliding frames 5 can be adjusted to accommodate cardboards 6 of different widths, with the sliding frame 5 on the left side being taken as a reference. Therefore, the difference between the sliding frame 5 on the left side and the sliding frame 5 in the middle is that the upper connecting tube 53 in the sliding frame 5 on the left side is directly fixed to the upper optical axis 32, so that the position of the sliding frame 5 is fixed; the middle lead screw 33 and the middle connecting tube 54 in the sliding frame 5 on the left side cooperate at the optical axis, so that the middle lead screw 33 and the middle connecting tube 54 can rotate relative to each other, but cannot drive the sliding frame 5 to move.

[0064] The difference between the right sliding frame 5 and the middle sliding frame 5 is that the right side plate 52 of the right sliding frame 5 has an inwardly extending rear baffle plate 7, and the rear baffle plate 7 is used to resist the cardboard 6 entering between the two straightening components 3.

[0065] In this embodiment, the middle lead screw 33 is provided with two sections of external threads 331 respectively cooperating with the middle sliding frame 5 and the right sliding frame 5, and the pitch of the external threads 331 cooperating with the middle sliding frame 5 is half of the pitch of the external threads 331 cooperating with the right sliding frame 5; thus, when the positions of the middle sliding frame 5 and the right sliding frame 5 are adjusted by rotating the middle lead screw 33, the movement amplitude of the right sliding frame 5 is greater than that of the middle sliding frame 5, so that the spacings between the three sliding frames 5 remain approximately equal;

[0066] The lower rotating shaft 34 is provided with two long key slots 341 respectively cooperating with the middle sliding frame 5 and the right sliding frame 5 , so that the middle sliding frame 5 and the right sliding frame 5 can still maintain transmission with the lower rotating shaft 34 while moving.

[0067] Embodiment 2:

[0068] Based on the above embodiment 1, Figures 1 to 4 As shown, the crossbeam 1 is used to control the spacing and height of the two straightening assemblies 3. A lifting device 11 is fixedly connected to the upper side of the crossbeam 1, and the lifting device 11 is a pair of symmetrical cylinders. A slide rail is provided on the lower side of the crossbeam 1, and a pair of sliding blocks 2 are slidably installed on the slide rail, and the sliding blocks 2 are connected to the corresponding straightening assemblies 3.

[0069] The two sides of the lower end of the sliding block 2 are provided with flange plates, which are fixedly connected to the upper side of the base frame 31; the upper end of the sliding block 2 is provided with a dovetail slide groove, which is slidably matched with the slide rail on the lower side of the beam 1; the middle of the sliding block 2 is provided with a square hole, in which a connecting seat 21 is fixed. A pair of adjusting cylinders 12 arranged along the length direction of the beam 1 are fixed to the lower side of the beam 1, and the piston rod end of the adjusting cylinder 12 is fixedly connected to the connecting seat 21 on the corresponding side. The spacing between the two straightening assemblies 3 can be adjusted by adjusting the cylinder 12 to adapt to cardboards 6 of different lengths; the lifting device 11 can control the beam 1 and the straightening assembly 3 to gradually rise during the stacking process to adapt to different stacking heights.

[0070] Embodiment three:

[0071] Based on the above embodiment 2, combined with Figures 1 to 4 As shown,

[0072] An upper pressing plate 4 is fixed to one side of the crossbeam 1 through four supporting rods. The upper pressing plate 4 is pressed on the position above the inlet end of the base frame 31. The side of the upper pressing plate 4 close to the inlet end is tilted upward to facilitate the paperboard 6 to enter between the two straightening components 3. A wedge-shaped sealing plate 311 is fixed to the upper end of each side of the base frame 31. The wedge-shaped sealing plate 311 cooperates with the inclined part of the upper pressing plate 4 to prevent the paperboard 6 from flying out from the side of the upper pressing plate 4.

[0073] Working process:

[0074] The stacking device is arranged at one end of the cardboard conveyor belt. The two sliding blocks 2 are controlled to move by adjusting the oil cylinder 12, and the distance between the two straightening components 3 is adjusted to adapt to the length of the cardboard.

[0075] The first driver 35 controls the central lead screw 33 to rotate, and adjusts the spacing between the sliding racks 5 so that the overall width of each sliding rack 5 adapts to the width of the paperboard;

[0076] like Figure 7 As shown, the cardboard 6 is separated from the cardboard conveyor belt, and under the guidance of the upper pressing plate 4, enters between the two straightening assemblies 3 and rests on the rear baffle 7, and then the cardboard 6 falls on the base or the previous cardboard 6;

[0077] The lifting device 11 drives the crossbeam 1 and the two straightening assemblies 3 to move upward at a certain speed, and the second driver 36 drives the lower rotating shaft 34 to rotate at a certain speed, thereby driving the straightening belt 51 to rotate; the straightening belt 51 also moves upward at a certain speed while rotating, and gradually straightens the upper cardboard 6 slowly under the action of the inclined portion 512 and the vertical portion 511, so that each cardboard 6 is aligned and the side edges of the cardboard 6 are not damaged.

[0078] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A packaging cardboard stacking device, characterized in that: include: A crossbeam, the upper side of which is fixedly connected with a lifting device; A pair of sliding blocks are respectively slidably mounted on the lower side of the crossbeam; Two symmetrically arranged straightening components are disposed on both sides of the paperboard and are arranged one by one on the lower side of the sliding block; Wherein, the righting assembly comprises: A base frame, fixedly connected to the lower side of the sliding block; An upper optical axis, arranged horizontally and fixedly connected to the base frame at both ends; A middle lead screw is horizontally arranged below the upper optical axis and its two ends are rotatably connected to the base frame; one end of the middle lead screw is connected to a first driver; A lower rotating shaft is horizontally arranged below the middle lead screw and its two ends are rotatably connected to the base frame; one end of the lower rotating shaft is connected to a second driver; A plurality of parallel sliding frames are respectively slidably mounted on the upper optical axis, the middle lead screw and the lower rotating shaft; a straightening belt driven by the lower rotating shaft is mounted on the sliding frame, the straightening belt comprises a vertical portion on a side close to the paperboard, and an upper side of the vertical portion has an inclined portion inclined toward a side away from the paperboard; The sliding frame also includes: A pair of side plates, the two side plates are passed through the upper optical axis, the middle lead screw and the lower rotating axis; An upper connecting cylinder is fixedly connected between the two side plates; the upper connecting cylinder is slidably sleeved on the upper optical axis, and an upper pulley is rotatably mounted on the upper connecting cylinder; A middle connecting tube is fixedly connected between the two side plates; the middle connecting tube is sleeved on the middle lead screw through a threaded connection, and a middle pulley is rotatably mounted on the middle connecting tube; A lower pulley is arranged between the two side plates; the lower pulley is sleeved on the lower rotating shaft, and the lower pulley and the lower rotating shaft are connected by a key; The straightening belt is installed on the upper pulley, the middle pulley and the lower pulley; The middle lead screw is provided with a plurality of sections of external threads corresponding to the middle connecting tubes of the sliding frame one by one, and the pitches of the plurality of sections of the external threads are smaller as they are closer to the inlet end.

2. A packaging cardboard stacking device according to claim 1, characterized in that: One end of the base frame is an inlet end of the paperboard, and the first driver and the second driver are arranged at an end of the base frame away from the inlet end.

3. A packaging cardboard stacking device according to claim 1, characterized in that: The lower rotating shaft is provided with a plurality of long key grooves corresponding one to one with the external threads on the middle lead screw.

4. A packaging cardboard stacking device according to claim 2, characterized in that: A rear baffle is fixed to one side of the sliding frame farthest from the inlet end.

5. A packaging cardboard stacking device according to claim 4, characterized in that: An upper pressing plate pressed above the inlet end of the base frame is fixed to one side of the crossbeam; The side of the upper pressing plate close to the inlet end is inclined upward, and a wedge-shaped sealing plate in contact with the lower surface of the upper pressing plate is fixed on the upper side of the base frame.

6. A packaging cardboard stacking device according to claim 1, characterized in that: A pair of adjusting oil cylinders arranged along the length direction of the cross beam are fixed on the lower side of the cross beam; the piston rod ends of the two adjusting oil cylinders are fixedly connected to the sliding blocks on the corresponding sides.

7. A packaging cardboard stacking device according to claim 6, characterized in that: The lower end of the sliding block has a flange plate for fixed connection with the base frame, and the upper end of the sliding block has a dovetail groove for sliding connection with the crossbeam; a square hole is opened in the middle of the sliding block, and a connecting seat is fixed in the square hole, and the connecting seat is fixedly connected to the piston rod end of the adjusting cylinder.

Images