Paper square folding mechanism of square-bottom paper bag machine
By combining paper square folding mechanisms, the problems of paper bag machines being unable to adjust the folding corner size and quickly form the paper are solved. This enables convenient adjustment of raw paper and rapid folding into a square structure, thus improving applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, paper bag machines cannot adjust the size of the folded corners according to the size of the square structure, and cannot quickly form the shape after folding.
The paper square folding mechanism adopts components such as mounting platform, operation panel, feeding plate, pre-folding plate, motor box, folding bending rod, drive seat, telescopic cylinder and servo motor. Through the coordinated action of cylinder and motor, it realizes the pre-folding, folding and bonding operations of raw paper.
It enables convenient adjustment of raw paper and quick folding into a square structure, improving applicability and making operation more convenient. The folding force can be adjusted according to the paper material.
Smart Images

Figure CN224044726U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of square-bottom paper bag making technology, specifically to a square paper folding mechanism for a square-bottom paper bag making machine. Background Technology
[0002] Packaging bags are bags used to package various goods, facilitating transportation and storage during production and distribution. The commercial nature of packaging itself is becoming increasingly prominent; it has become a special product no longer dependent on commodity production, but a widely used product indispensable to all commodities.
[0003] In the existing technology, the glued paper bags need to be collected and neatly stacked to facilitate transfer to the next process for boxing. During the feeding and pulling process of the paper bag machine, the large roll of raw paper needs to be coated with glue and folded into a square structure. However, the folding operation cannot adjust the size of the folded corners of the raw paper according to the size of the square structure. Furthermore, after folding and gluing into a square, the raw paper cannot be quickly creased and pressed into shape.
[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content
[0005] In view of the problems in the related technologies, this utility model proposes a square paper folding mechanism for a square bottom paper bag machine to overcome the above-mentioned technical problems existing in the existing related technologies.
[0006] Therefore, the specific technical solution adopted by this utility model is as follows:
[0007] The square paper folding mechanism of the square bottom paper bag machine includes a mounting platform, an operating panel, and a feeding plate. The top of the mounting platform is fixedly connected to the operating panel. The feeding plate is embedded and fixed in the middle of the top side of the operating panel. A support frame is fixedly connected to the rear side of the top of the operating panel. Pre-folding plates are symmetrically connected to the rear side of the support frame. Motor boxes are respectively connected to the left and right sides of the top of the operating panel. Folding rods are connected to the front side of each motor box. A drive seat is fixedly connected to the bottom of each motor box. The drive seat is embedded and fixed to the top side of the operating panel. A folding adhesive seat is fixedly connected to the front side of the top of the operating panel. A third telescopic cylinder is fixedly mounted above the front side of the support frame. A lifting groove plate is connected to the movable end of the third telescopic cylinder. A positioning pressure roller is connected between the inner walls of the lifting groove plate through bearings.
[0008] Preferably, the pre-folded plate includes a first connecting plate and a second connecting plate, with the top side of the first connecting plate fixedly connected to the second connecting plate, and a first telescopic cylinder fixedly connected to the middle of the outer side of the first connecting plate.
[0009] Preferably, a matching groove is excavated in the inner side of the first connecting plate, a regulating plate is movably connected inside the matching groove, a movable limiting wheel is equidistantly connected to the inner side of the regulating plate, and a fixed limiting wheel is connected to the inner side of the second connecting plate.
[0010] Preferably, a first servo motor is fixedly connected inside the motor box, the output shaft of the first servo motor penetrates through the front side of the motor box, and the output shaft is fixedly connected to the front side of the folding bending rod, and the folding bending rod is located above the material conveying plate.
[0011] Preferably, the driving seat comprises a box body and a second servo motor, the box body is fixedly connected to the right side of the second servo motor, a lead screw is connected to the left side of the inner wall of the box body through a bearing, and a guide rod is arranged on one side of the lead screw.
[0012] Preferably, a moving block is arranged on the outer side of the lead screw and the guide rod, the moving block is fixedly connected to the bottom side of the box body, the output shaft of the second servo motor is fixedly connected to the outer end of the lead screw, and the moving block is threadedly connected to the lead screw through a lead screw nut.
[0013] Preferably, the folding and bonding seat comprises a seat body and a second telescopic cylinder, the seat body is fixedly connected to the middle of the top side of the second telescopic cylinder, a notch is excavated in the middle of the bottom side of the seat body, the movable end of the second telescopic cylinder extends into the inner side of the notch, and a groove plate is fixedly connected to the movable end.
[0014] Preferably, the groove plate is located in the notch, a rotating shaft is connected between the inner walls of the groove plate through a bearing, the bottom side of the rotating shaft extends into the bottom side of the groove plate, and rubber marking wheels are fixedly arranged on the outer walls of the two ends of the rotating shaft.
[0015] The utility model discloses a first telescopic cylinder's movable end adjusts the interval of regulating plate, can adjust the degree of pre-folding of raw paper according to demand before folding, and operation is more convenient, can make raw paper right side cover in the folding of raw paper left side, can quickly fold the rectangular raw paper into positive and negative square structure, starts first servo motor, makes folding bending rod press down, can adjust the force of folding bending rod press down according to the material quality of paper, and operation is more convenient, and the applicability is further improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.
[0017] Figure 1 is a total structure schematic view of a paper square folding mechanism of a square bottom paper bag machine according to an embodiment of the present application;
[0018] Figure 2 is a pre-folding plate appearance structure schematic view of a paper square folding mechanism of a square bottom paper bag machine according to an embodiment of the present application;
[0019] Figure 3 is a driving seat and motor box split structure schematic view of a paper square folding mechanism of a square bottom paper bag machine according to an embodiment of the present application;
[0020] Figure 4 is a folding and bonding seat appearance structure schematic view of a paper square folding mechanism of a square bottom paper bag machine according to an embodiment of the present application.
[0021] In the drawings:
[0022] 1, mounting table; 2, operation plate; 3, material conveying plate; 4, support frame; 5, pre-folding plate; 6, motor box; 7, folding bending rod; 8, driving seat; 9, folding and bonding seat; 10, first connecting plate; 11, rubber indentation wheel; 12, second connecting plate; 13, first telescopic cylinder; 14, embedded groove; 15, adjusting plate; 16, movable limiting wheel; 17, fixed limiting wheel; 18, first servo motor; 19, box body; 20, second servo motor; 21, lead screw; 22, guide rod; 23, moving block; 24, seat body; 25, second telescopic cylinder; 26, notch; 27, groove plate; 28, rotating shaft; 29, third telescopic cylinder; 30, lifting groove plate; 31, positioning pressure wheel. DETAILED DESCRIPTION
[0023] To further illustrate the embodiments, the present application provides drawings, which are part of the disclosure of the present application, mainly used to illustrate the embodiments, and can explain the operating principle of the embodiments in cooperation with the related description of the specification. With reference to these contents, those skilled in the art should understand other possible embodiments and advantages of the present application. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0024] According to the embodiment of the present application, a paper square folding mechanism of a square bottom paper bag machine is provided.
[0025] Embodiment one
[0026] As Figures 1-4As shown, according to the paper square folding mechanism of the square bottom paper bag machine, the installation table 1 is fixedly connected with the operation plate 2 at the top, the feeding plate 3 is embedded and fixed on the top side of the operation plate 2, the support frame 4 is fixedly connected with the operation plate 2 at the top rear side, the pre-folding plate 5 is symmetrically connected with the support frame 4 at the rear side, the motor box 6 is connected with the operation plate 2 at the top left side and the right side respectively, the folding bending rod 7 is connected with the motor box 6 at the front side, the driving seat 8 is fixedly connected with the motor box 6 at the bottom, the driving seat 8 is embedded and fixed on the top side of the operation plate 2, the folding and bonding seat 9 is fixedly connected with the operation plate 2 at the top front side, the third telescopic cylinder 29 is fixedly connected with the support frame 4 at the upper front side, the lifting groove plate 30 is connected with the third telescopic cylinder 29 at the movable end, the positioning pressure wheel 31 is connected with the lifting groove plate 30 through bearings between inner walls, the pre-folding plate 5 comprises the first connecting plate 10 and the second connecting plate 12, the first connecting plate 10 is fixedly connected with the second connecting plate 12 at the top side, the first telescopic cylinder 13 is fixedly connected with the first connecting plate 10 at the middle of the outer side, the embedded groove 14 is excavated in the inner side of the first connecting plate 10, the adjusting plate 15 is movably connected in the embedded groove 14, the movable limiting wheel 16 is equidistantly connected with the adjusting plate 15 at the inner side, the fixed limiting wheel 17 is connected with the second connecting plate 12 at the inner side, after the raw paper is conveyed and glued, the raw paper is entered into the pre-folding plate 5, the first telescopic cylinder 13 is started, the movable end of the first telescopic cylinder 13 drives the adjusting plate 15 to move inward, the third telescopic cylinder 29 drives the lifting groove plate 30 to descend, the positioning pressure wheel 31 presses the raw paper folded into V shape on the feeding plate 3 for conveying, the spacing of the adjusting plate 15 is adjusted through the movable end of the first telescopic cylinder 13, the degree of pre-folding of the raw paper before folding can be adjusted according to requirements, and the operation is more convenient.
[0027] Example two
[0028] As Figures 1-4As shown, according to the paper square folding mechanism of the square bottom paper bag machine, the installation table 1 is fixedly connected with the operation plate 2, the conveying plate 3 is embedded and fixed on the top side of the operation plate 2, the support frame 4 is fixedly connected to the top rear side of the operation plate 2, the pre-folding plate 5 is symmetrically connected to the rear side of the support frame 4, the motor box 6 is connected to the top left side and the top right side of the operation plate 2, the folding bending rod 7 is connected to the front side of the motor box 6, the driving seat 8 is fixedly connected to the bottom of the motor box 6, the driving seat 8 is embedded and fixed on the top side of the operation plate 2, the folding and bonding seat 9 is fixedly connected to the top front side of the operation plate 2, the third telescopic cylinder 29 is fixedly connected to the front side of the support frame 4, the lifting groove plate 30 is connected to the movable end of the third telescopic cylinder 29, the positioning pressure wheel 31 is connected between the inner walls of the lifting groove plate 30 through bearings, the first servo motor 18 is fixedly connected inside the motor box 6, the output shaft of the first servo motor 18 penetrates the front side of the motor box 6, and the output shaft penetrates and is fixed to the front side of the folding bending rod 7, the folding bending rod 7 is located above the conveying plate 3, the driving seat 8 includes the box body 19 and the second servo motor 20, the box body 19 is fixedly connected with the second servo motor 20 on the right side, the lead screw 21 is connected to the left side of the inner wall of the box body 19 through bearings, the lead screw 21 is provided with the guide rod 22 on one side, the moving block 23 is sleeved with the lead screw 21 and the guide rod 22 on the outside, the moving block 23 is fixedly connected to the bottom side of the box body 19 on the top, the output shaft of the second servo motor 20 is fixedly connected with the outer end of the lead screw 21, the moving block 23 is matched and threadedly connected with the lead screw 21 inside through the lead screw nut, the raw material paper after pre-folding will enter between the folding bending rods 7, the left and right sides of the raw material paper are folded through the folding bending rods 7, the second servo motor 20 is started, the output shaft of the second servo motor 20 drives the lead screw 21 to rotate, under the action of the guide rod 22 guiding, limiting and the lead screw nut inside the moving block 23, the moving block 23 can drive the motor box 6 to be transversely adjusted, the right side of the raw material paper can be covered on the folded part on the left side after the left side of the raw material paper is folded, the raw material paper of the rectangular shape can be quickly folded into a square structure, the first servo motor 18 is started, the folding bending rod 7 is pressed down, the folding strength of the folding bending rod 7 can be adjusted according to the material of the paper, the adjustment operation is more convenient, and the applicability is further improved.
[0029] Embodiment three
[0030] As Figures 1-4As shown, according to the paper square folding mechanism of the square base paper bag machine, the paper square folding mechanism comprises a mounting table 1, an operating plate 2 and a material conveying plate 3, the mounting table 1 is fixedly connected with the operating plate 2 at the top, the material conveying plate 3 is embedded and fixed at the top side middle part of the operating plate 2, a supporting frame 4 is fixedly connected with the operating plate 2 at the top rear side, a pre-folding plate 5 is symmetrically connected with the supporting frame 4 at the rear side, a motor box 6 is connected with the operating plate 2 at the top left side and the top right side respectively, a folding bending rod 7 is connected with the motor box 6 at the front side, a driving seat 8 is fixedly connected with the motor box 6 at the bottom, the driving seat 8 is embedded and fixed at the top side of the operating plate 2, a folding and bonding seat 9 is fixedly connected with the operating plate 2 at the top front side, a third telescopic cylinder 29 is fixedly connected with the supporting frame 4 at the top front side, a lifting groove plate 30 is connected with the third telescopic cylinder 29 at the movable end, a positioning pressure wheel 31 is connected with the inner wall of the lifting groove plate 30 through a bearing, the folding and bonding seat 9 comprises a seat body 24 and a second telescopic cylinder 25, the seat body 24 is fixedly connected with the second telescopic cylinder 25 at the top side middle part, a notch 26 is excavated at the bottom side middle part of the seat body 24, the movable end of the second telescopic cylinder 25 is inserted into the inside of the notch 26, and a recessed groove plate 27 is fixedly connected, the recessed groove plate 27 is located in the inside of the notch 26, a rotating shaft 28 is connected with the inner wall of the recessed groove plate 27 through a bearing, the rotating shaft 28 is inserted into the bottom side of the recessed groove plate 27 at the bottom side, and rubber mark wheels 11 are fixedly sleeved with the outer walls of the two ends of the rotating shaft 28 respectively, the movable end of the second telescopic cylinder 25 drives the recessed groove plate 27 to descend by starting the second telescopic cylinder 25, the recessed groove plate 27 presses the square paper bag gluing position through the rubber mark wheels 11 at the two ends of the outer wall of the rotating shaft 28, and the recessed groove plate 27 performs indentation operation on the left and right sides of the square paper bag, and the square paper bag can be automatically bonded after gluing.
[0031] In summary, by means of the above technical scheme of the utility model, when the device is used, after the raw paper is conveyed and glued, it enters the pre-folding plate 5, the first telescopic cylinder 13 is started, the movable end of the first telescopic cylinder 13 drives the adjusting plate 15 to move inward, the third telescopic cylinder 29 is controlled to drive the lifting groove plate 30 to descend, the positioning press wheel 31 presses the raw paper pre-folded into a V shape on the conveying plate 3 to convey, the spacing of the adjusting plate 15 is adjusted through the movable end of the first telescopic cylinder 13, the raw paper after pre-folding will enter between the folding bending rods 7, the left and right sides of the raw paper are folded through the folding bending rods 7, the second servo motor 20 is started, the output shaft of the second servo motor 20 drives the lead screw 21 to rotate, under the action of the guide rod 22 guiding and limiting the moving block 23 and the lead screw nut inside the moving block 23, the moving block 23 can drive the motor box 6 to be transversely adjusted, the right side of the raw paper after the left side of the raw paper is folded can cover the folded part on the left side, the rectangular raw paper can be quickly folded into a positive and negative square structure, the folding bending rod 7 is pressed down by starting the first servo motor 18, the intensity of the folding bending rod 7 can be adjusted according to the material of the paper, the concave groove plate 27 is lowered by starting the second telescopic cylinder 25, the movable end of the second telescopic cylinder 25 drives the concave groove plate 27 to descend, the rubber indentation wheel 11 on the outer wall of the two ends of the rotating shaft 28 of the concave groove plate 27 presses the gluing position of the square paper bag and performs indentation operation on the left and right sides of the square paper bag.
[0032] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A paper square folding mechanism of a square bottom paper bag machine, comprising a mounting table (1), an operating plate (2), and a feeding plate (3), characterized in that, The mounting table (1) top is fixedly connected with the operation plate (2), the feed plate (3) is embedded and fixed in the top side middle part of the operation plate (2), the operation plate (2) top rear side is fixedly connected with the support frame (4), the support frame (4) rear side is connected with the pre-folding plate (5) symmetrically, the operation plate (2) top left side and right side are connected with the motor box (6) respectively, the motor box (6) front side is connected with the folding bending rod (7) respectively, the motor box (6) bottom is fixedly connected with the drive seat (8), the drive seat (8) is embedded and fixed on the top side of the operation plate (2), the operation plate (2) top front side is fixedly connected with the folding bonding seat (9), the support frame (4) front side upper side is fixedly connected with the third telescopic cylinder (29) in the street, the movable end of the third telescopic cylinder (29) is connected with the lifting groove plate (30), the inner wall of the lifting groove plate (30) is connected with the positioning pressure wheel (31) through the bearing.
2. The paper square folding mechanism of the square bottom bag machine according to claim 1, wherein, The pre-folding plate (5) comprises a first connecting plate (10) and a second connecting plate (12), the first connecting plate (10) top side is fixedly connected with the second connecting plate (12), the first connecting plate (10) outer side middle part is fixedly connected with the first telescopic cylinder (13).
3. The paper square folding mechanism of the square bottom bag machine according to claim 2, wherein, The first connecting plate (10) inner side is embedded with the matching recess (14), the matching recess (14) inner part is movably connected with the adjusting plate (15), the adjusting plate (15) inner side is equidistantly connected with the movable limit wheel (16), the second connecting plate (12) inner side is connected with the fixed limit wheel (17).
4. The paper square folding mechanism of the square bottom bag machine according to claim 3, wherein, The motor box (6) inner part is fixedly connected with the first servo motor (18), the output shaft of the first servo motor (18) penetrates the front side of the motor box (6), and the output shaft penetrates and is fixed to the front side of the folding bending rod (7), the folding bending rod (7) is located above the feed plate (3).
5. The paper square folding mechanism of the square bottom bag machine according to claim 4, wherein, The drive seat (8) comprises a box body (19) and a second servo motor (20), the box body (19) right side is fixedly connected with the second servo motor (20), the inner wall left side of the box body (19) is connected with the lead screw (21) through the bearing, one side of the lead screw (21) is provided with the guide rod (22).
6. The paper square folding mechanism of the square bottom bag machine according to claim 5, wherein, The lead screw (21) and the guide rod (22) outer side are sleeved with the moving block (23), the moving block (23) top is fixedly connected with the box body (19) bottom side, the output shaft of the second servo motor (20) is fixedly connected with the outer end of the lead screw (21), the moving block (23) inner part is matched with the lead screw (21) threaded connection through the lead screw nut.
7. The paper square folding mechanism of the square bottom bag machine according to claim 6, wherein, The folding bonding seat (9) comprises a seat body (24) and a second telescopic cylinder (25), the seat body (24) top side middle part is fixedly connected with the second telescopic cylinder (25), the seat body (24) bottom middle part is embedded with the notch (26), the movable end of the second telescopic cylinder (25) extends into the inner part of the notch (26), and is fixedly connected with the recess plate (27).
8. The paper square folding mechanism of the square bottom bag machine according to claim 7, wherein, The recessed plate (27) is located inside the gap (26), and rotating shafts (28) are connected between the inner walls of the recessed plate (27) through bearings, the bottom sides of the rotating shafts (28) extend into the bottom side of the recessed plate (27), and the outer walls of the two ends of the rotating shafts (28) are respectively sleeved with rubber indentation wheels (11).