CN218430238U - Bottom closing device of paper bag machine - Google Patents

Abstract

The utility model discloses a bottom closing device of a paper bag machine, which has the key points of the technical scheme that the bottom closing device comprises a frame, wherein a conveying platform for conveying paper bags is arranged on the frame, a front bottom closing component and a rear bottom closing component which are connected with the frame are sequentially arranged on the conveying platform, and a paper beating rod is arranged on the front bottom closing component and is connected with a driving mechanism for driving the paper beating rod to move; when the paper is printed, the driving component enables the moving speed of the paper printing rod to be faster than the conveying speed of the paper bag; make the container bag can realize closing the end at the bottom of the bag through the mode of platform formula through above-mentioned structure, avoided the container bag to receive external force to produce the crease influence pleasing to the eye closing end in-process, compare the simple more of structure with current big hub wheel simultaneously for the staff is in installation, debugging and maintenance link convenience more, efficiency is higher.

Description

Bottom closing device of paper bag machine

Technical Field

The utility model relates to a paper bag machine production facility technical field, concretely relates to paper bag machine close end device.

Background

The square bottom paper bag is an article widely used in daily life, and the production of the paper bag is completely mechanized. The paper bag machine roller surface lining plate and a bottom clamp synchronous adjustment structure disclosed in a similar publication number (CN 201610449991.0) are commonly adopted for a common square-bottom paper bag on the market, and the bag bottom of the paper bag is clamped through a first clamp fixed cutter holder arranged on a first clamp seat and a first clamp movable cutter holder arranged on a first clamp mandrel, so that the paper bag is clamped on a large hub wheel, and bottom combination of two sides of the bag bottom is realized in the process of rotating along with the large hub wheel; i.e. the process as shown in fig. 11 is completed;

however, in the rolling bottom closing mode, the fixed tool holder is required to clamp one side of the bag bottom so as to avoid falling off of the paper bag in the rotating process, so that the clamped part of the bag bottom is indented in the bottom closing process, and indentation in a thicker paper bag is more obvious, so that the attractiveness of the paper bag in production is influenced; meanwhile, the structure of the large hub wheel is complex, in the process of debugging equipment, three processes of gluing, impressing and bottom closing are arranged on the peripheral side of the large hub wheel, and the large hub wheel is also provided with three stations corresponding to the three processes, so that when the clamping assembly on the large hub wheel is debugged to match the specification of a paper bag and ensure that the clamping assembly corresponds to the processes, the three stations on the large hub wheel can be adjusted only by rotating the large hub wheel for at least three circles; the debugging is troublesome, the time of workers is wasted, and the debugging efficiency is reduced; meanwhile, the later maintenance is not easy.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a bottom closing device of a paper bag machine, which improves a rolling type bottom closing mechanism into a platform conveying type bottom closing device, thereby simplifying the structure of the device and facilitating the subsequent maintenance and debugging; meanwhile, the bottom closing mode of the platform conveying mode ensures the stability of the paper bag conveying process, avoids the appearance of clamp marks on the bag surface, and improves the attractiveness of paper bag production.

In order to realize the purpose, the utility model adopts the technical scheme that: a bottom closing device of a paper bag machine comprises a frame; the method is characterized in that: still including being located the frame:

the conveying platform comprises a conveying belt for conveying the paper bag and an air suction assembly positioned below the conveying belt;

the front bottom closing assembly is positioned above the conveying belt and comprises a paper beating rod moving along the conveying direction of the paper bag and a driving mechanism for driving the paper beating rod to move, and when the paper beating rod beats the paper bag, the driving mechanism drives the paper beating rod to move faster than the conveying speed of the paper bag;

and the rear bottom closing component is arranged behind the front bottom closing component along the conveying direction of the paper bag and is matched with the front bottom closing component to turn over a pair of turning surfaces of the bag bottom along the crease.

The utility model discloses still further set up to, include:

the pair of edge pressing assemblies are symmetrically arranged on two sides of the rack, are positioned between the front bottom closing assembly and the rear bottom closing assembly and are used for limiting two side edges of the bag bottom in the up-down direction when the paper beating rod beats paper for the paper bag.

The utility model discloses still further set up to, back close end subassembly include along container bag direction of transmission set gradually:

the air blowing assembly is used for blowing air to the back folded surface of the paper bag when the back folded surface is separated from the adsorption of the conveying belt, so that the back folded surface is folded;

and the bottom combining roller group is positioned behind the blowing assembly, comprises an upper roller and a lower roller which are arranged on the rack from top to bottom and is used for pressing the back folded surface of the paper bag towards the bag bottom.

The utility model discloses still further set up to, preceding closed end subassembly includes:

the pair of chain wheel groups are symmetrically arranged on two sides of the rack; the paper beating rod is arranged between the pair of chain wheel sets.

The utility model discloses still further set up to, the blank pressing subassembly includes:

the depression bar sets up and is located the conveyer top along container bag direction of delivery level, the depression bar acts on the one end on bag bottom both sides limit can be to the swing of keeping away from the orientation elasticity of container bag and reseing.

The utility model discloses still further set up to, the blank pressing subassembly includes:

the pressing plate is horizontally arranged perpendicular to the conveying direction of the paper bag;

and the air cylinder drives the pressing plate to reciprocate along the direction vertical to the conveying direction of the paper bag so that the end part of the driving pressing plate can act on two side edges of the bottom of the bag.

The utility model discloses still further set up to, the blank pressing subassembly includes:

the sliding seat is arranged on the rack and slides in a reciprocating manner along the conveying direction of the paper bag;

the mounting seat can slide up and down along the sliding seat through the reciprocating movement of the guide rod between the sliding seat and the conveying platform;

one end of the pressing piece is fixedly connected to the mounting seat, and the other end of the pressing piece extends towards the conveying table;

and the control mechanism controls the sliding seat to drive the pressing piece to reciprocate along the conveying direction of the paper bag, controls the pressing piece to reciprocate between the conveying table and the sliding seat through the mounting seat, and can move downwards along the sliding seat when passing through two side edges of the bag bottom.

The utility model discloses still further set up to, beat the paper pole towards container bag direction of delivery's terminal surface for along bag body direction of delivery slant decurrent inclined plane.

The utility model discloses still further set up to, be provided with its pivoted pinch roller relatively on the beating paper pole.

The utility model discloses still further set up to, actuating mechanism is servo motor or cam mechanism for drive sprocket group makes the variable speed motion.

The utility model discloses still further set up to, control mechanism includes:

the guide groove is fixedly arranged on the rack and is in sliding connection with the mounting seat through a pin shaft; the pressing piece is used for driving the pressing piece to move away from or close to the conveying table;

the top surface of the lifting platform is abutted against the bottom surface of the mounting seat and corresponds to the guide groove, and the lifting platform is used for controlling the lifting of the pressing piece;

and the motion mechanism is used for controlling the sliding seat to reciprocate.

The utility model discloses still further set up to, the guide slot includes:

the paper bag conveying device comprises a working section, a separation section and a transition section, wherein the working section, the separation section and the transition section are distributed along the conveying direction of the paper bag, and the separation section is connected with the working section and the transition section, and the separation section is arranged in a mode of extending outwards relative to the working section.

The utility model discloses still further set up to, the elevating platform includes:

the descending section corresponds to the working section and is used for enabling the pressing piece to abut against the conveying table;

and the pair of lifting sections are arranged at two ends of the descending section and respectively correspond to the separation section and the working section.

The utility model discloses still further set up to, the motion includes:

the rack is horizontally arranged at the bottom of the sliding seat;

a pair of gears which rotate through a driving motor is meshed with the racks, and the gears are rotationally connected with the rack through a transmission rod;

the utility model discloses still further set up to, beat the motion route of paper pole when beating paper and be close to gradually in conveyer setting for following container bag direction of delivery on.

To sum up, the beneficial effects of the utility model are that:

1. compared with the existing large hub wheel bottom combining device, the flat-platform bottom combining device can ensure the stable conveying of the paper bags, simultaneously reduces the clamping to the paper bags in comparison with the large hub wheel, avoids the impression caused by the clamping on the paper bags from influencing the appearance, and reduces the damage to the paper bags in the bottom combining process; meanwhile, the structure is simpler, the maintenance and subsequent debugging of the machine by workers in the production process of the paper bag are facilitated, and the efficiency of debugging equipment is improved.

2. The setting of blank pressing subassembly can carry on spacingly to the bag bottom edge of container bag to avoid in the production process, beat the in-process container bag that the paper pole is pushing down to the back turn-over folded surface and take place the skew, the while guarantees back turn-over folded surface and can turn over along the crease and turn over, guarantees the quality at the bottom of the container bag closes.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is a schematic structural diagram of the front bottom assembly of the present embodiment.

Fig. 3 is a schematic structural view of a paper beating rod in embodiment 2 of the present invention.

Fig. 4 is a schematic structural diagram of a servo motor in the embodiment.

Fig. 5 is a schematic view of the cam mechanism in the embodiment.

Fig. 6 is a schematic structural diagram of the rear bottom assembly of the present embodiment.

FIG. 7 is a schematic view of the binder assembly of the present embodiment.

Fig. 8 is a schematic structural view of an edge pressing assembly in embodiment 4 of the present invention.

Fig. 9 is a schematic structural view of a blank pressing assembly in embodiment 5 of the present invention.

Fig. 10 is a perspective view of a blank holder assembly in embodiment 5 of the present invention.

Fig. 11 is a schematic view of the bottom closing operation of the paper bag.

Fig. 12 is a schematic view of the mounting structure of the paper feed lever in the present embodiment.

Reference numerals are as follows: 1-a frame; 2-a conveying table; 3-front bottom closing assembly; 301-a paper-beating rod; 302-a driving wheel; 303-a rotating shaft; 304-a driven wheel; 305-a connecting rod; 306-a chain; 307-pinch roller; 4-rear bottom closing assembly; 401-a blow down assembly; 402-combining the bottom roller group; 412-an upper roller; 422-lower roll; 403-platen roller; 5-a drive mechanism; 501-a servo motor; 502-a drive gear; 503-eccentric gear; 6-a blank pressing component; 601-fixed block; 602-a compression bar; 603-a push plate; 604-a spring; 605-a cylinder; 606-a platen; 607-a slide; 608-a mount; 609-a guide bar; 610-a casting die; 611-a guide groove; 6110-working section; 6111-disengagement section; 6112-transition section; 612-pin axis; 613-lifting platform; 6130-descending section; 6131-lifting section; 614-motion mechanism; 6140-rack; 6141-gear; 6142-driving rod; 7-front folding surface; 8-back turnover face; 9-side edge; and 10, fixing blocks.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-12, after the square-bottom paper bag passes through the paper bag machine shown in fig. 1, the bottom closing operation for the bag bottom as shown in fig. 12 is completed, and in the following structure, the conveying direction of the paper bag is defined to be the rear direction;

example 1:

as shown in fig. 1, the paper bag machine is provided with a conveying table 2, the conveying table 2 is provided with an air suction assembly, the air suction assembly comprises an air suction table fixedly connected with a frame 1, and the air suction table is connected with a negative pressure source; the air suction table is also rotationally connected with a transmission belt, air suction holes which are mutually communicated are formed between the transmission belt and the air suction table, and when the paper bag is conveyed to the conveying table 2, the paper bag can be adsorbed on the transmission belt, so that the conveying is more stable, and the paper bag is prevented from being deviated in the conveying process;

a gluing roller, a creasing roller, a front bottom closing component 3 and a rear bottom closing component 4 are sequentially arranged along the conveying direction of the conveying table 2; the gluing roller and the creasing roller are both in the prior art, both sides of the bag bottom are glued and creased when the bag bottom passes through, and the creasing roller can extrude the crease on the bag bottom again to deepen crease marks, so that the subsequent bottom folding is more convenient;

when the paper bag enters the front bottom closing component, the paper beating rod 301 moves along the conveying direction of the paper bag under the driving of the chain 306, and the moving speed is higher than the conveying speed of the paper bag, so that in the advancing process of the paper bag, the paper bag abuts against the front folding surface 7 on the front side of the bag bottom from the front of the paper bag, is driven to be folded backwards along the folding line, and is primarily bonded with the bag bottom through glue;

as shown in fig. 3-4, the chain 306 is connected with and driven by the driving wheel 302 and the driven wheel 304, and meanwhile, the frame 1 is also rotatably connected with a tensioning gear for tensioning the chain 306, so as to ensure that the chain 306 is not loosened, the pair of driving wheels 302 realize synchronous motion through the rotating shaft 303, the rotating shaft 303 is connected with the servo motor 501, and the servo motor 501 is programmed in advance to control the transmission speed of the chain 306, so as to control the speed of the paper beating rod 301; the servo motor 501 can control the instantaneous acceleration of the paper beating rod 301 when the paper beating rod reaches the rear end of the bag bottom so as to realize the bottom combination of the front folding surface 7, or the constant speed is always kept, so that the speed of the paper beating rod is always higher than the conveying speed of the paper bag;

meanwhile, as shown in fig. 2, one surface of the paper striking rod 301 facing the paper bag conveying direction is an inclined surface, the arrangement of the inclined surface can enable the paper striking rod 301 to be more easily inserted below the front folding surface 7, and as shown in fig. 12, the inclination or the horizontal of the paper striking rod 301 can be controlled by respectively adjusting the positions of the two ends of the paper striking rod 301 on the pair of chains 306, so that the paper striking rod 301 can be realized in the advancing process, and the following paper striking rod 301 can more smoothly enter below the front folding surface 7; therefore, the front folding face 7 can be folded better, the smoothness of folding the front folding face 7 is ensured, and a better effect is achieved;

meanwhile, in this embodiment, a certain included angle is formed between the chain 306 and the conveying table 2, so as to drive the paper beating rod 301 to move obliquely downward along the passing center of the advancing conveying table 1, so that the paper beating rod 301 can better enter between the front folded surface 7 and the bag bottom, and after the front folded surface 7 is folded, the paper beating rod 301 can press the bag bottom downward, so that the front folded surface 7 is bonded with the bag bottom more firmly, and the front folded surface 7 is prevented from being separated from the bag bottom;

when the front folded surface 7 of the bag bottom is closed, the edge pressing components 6 arranged at two sides of the conveying platform 2 can limit the side edges 9 at two sides of the bag bottom in the vertical direction; meanwhile, the paper bag is turned over as shown in fig. 12, so that the side edge 9 is limited to prevent the side edge of the bag bottom from being turned up, the front turning surface 7 is turned over according to the preset crease, the paper beating rod 301 is prevented from entering between the bag bottom and the bag surface, and bottom closing failure is prevented;

the blank pressing assembly 6 is of a structure as shown in fig. 7, a fixed block 601 is fixed on the inner side of the frame 1 through a connecting rod, a connecting groove is formed in one side, facing the paper bag, of the fixed block 601, a pressing rod 602 is rotatably connected in the connecting groove, a spring 604 is arranged between the pressing rod 602 and the fixed block 601, and the pressing rod 602 can move towards the paper bag through the spring 604; the end part of the pressure lever 602 is also provided with a push plate 603, the edge of the push plate 603 acts on the side edge, so that the upwarping of the side edge 9 is avoided, after the front folding surface 7 of the paper bag is attached to the bag bottom, the fold formed by the front folding surface 7 and the bag bottom is abutted against the push plate 603 in the advancing process of the paper bag, so that the pressure levers 602 on the two sides are driven to swing towards the rack 1, the push plate 603 is separated from the edge of the bag bottom, and the paper bag continues to move forwards; after the paper bag leaves, the pressure lever 602 can reset under the action of the spring 604 to limit the next paper bag; a chute is further arranged between the fixing block 601 and the connecting groove, and the chute can limit the rotation angle of the pressure lever 602; the side 9 of the bag bottom can be prevented from upwarping through the rotating arranged compression bar 602, so that the paper beating rod 301 can be better ensured to be turned over along the crease in the paper beating process, the front turning surface 7 can be accurately turned over along the crease, and the quality of the paper bag bottom is improved.

As shown in fig. 6, the paper bag is conveyed to the back bottom closing assembly 4 under the driving of the conveying table 2, in the process, the front folded surface 7 of the bag bottom is adhered to the bag bottom, the paper outlet end of the conveying table 2 is also provided with a paper pressing roller 403, the paper bag is pressed between the conveying table 2 and the paper pressing roller 403 when passing through the paper pressing roller 403, and the back folded surface 8 is separated from the conveyor belt and is positioned above the air blowing assembly 401; the air blowing component connected with the air source can blow air upwards to the rear turnover surface 8 (the air blowing component can be an air blowing nozzle or air blowing connected with the air source), the air blowing time is controlled by a program according to the size of the bag bottom, then the moving distance of the bag bottom on the conveying table 2 is calculated, then the rear turnover surface 8 is turned over to the bag bottom for a certain angle, and then the bag is conveyed to the space between the upper roller 412 and the lower roller 422 for pressing under the conveying of the conveying table 2, wherein the upper roller 412 and the lower roller 422 are both connected with belts, so that the paper bag can be better clamped and cannot be bent and deformed through the belts, the rear turnover surface 8 is completely turned over backwards to be bonded with the bag bottom, and finally bottom closing action is finished; and the paper bag can be bonded more firmly after being extruded by the upper roller 412 and the lower roller 422, so that the bottom quality of the paper bag is improved.

Compared with the existing large hub wheel, the platform type bottom combining device has the advantages that the paper bag is sagged and deformed under the action of gravity due to the circumferential transportation of the large hub wheel, so that the paper bag needs to be clamped to be always attached to the large hub wheel, and an impression caused by clamping can be left; the platform type bottom closing device can ensure that the paper bag is always supported in the transportation process, and the paper bag can be always attached to the conveying belt through the air suction assembly, so that additional equipment is not needed for clamping the paper bag, the indentation damage in the transportation process is reduced, the attractiveness of the paper bag is improved, and the conveying of the paper bag is more stable; compared with the prior art, the platform type bottom closing device is simpler in structure, the running speed of the bottom closing device is matched with that of the host, when debugging is needed after paper bags of different specifications are replaced, the position of paper is only required to be adjusted, then the position of the paper beating rod on the chain 306 and the height and the position of the pressure rod are adjusted according to the position of the paper moving on the conveying table 2, the mechanism on the device can be matched with the paper bags, and bottom closing action is completed; the paper bag is always positioned on the conveying table in the transportation process, and the matching between the paper bag and the mechanism can be seen clearly, so that the adjustment of all the mechanisms can be completed only by driving the paper bag to run once by the transmission belt in the debugging process; the debugging times and time are reduced; the maintenance and debugging of the working personnel in the movement process are facilitated, and the debugging efficiency is improved.

Example 2:

on the basis of embodiment 1, the distinctive feature is the structure of the paper feed lever 301;

as shown in fig. 3, in this embodiment, the paper pressing rod 301 may be cylindrical, and a pressing wheel 307 that rotates relative to the paper pressing rod 301 is disposed on the paper pressing rod 301, the pressing wheel 307 is located in the middle of the paper pressing rod 301, and in the process of the advancing of the pressing wheel 307, the pressing wheel 307 drives the upward tilted front folded surface 7 forward, and makes the pressing wheel 307 abut against the paper bag, so that the front folded surface 7 can be rolled and extruded after being bonded to the bottom of the bag, and the bonding is firmer; meanwhile, the pressing wheel 307 can rotate, so that in the paper printing process, the distance between the pressing wheel and the conveying belt does not need to be adjusted, and the front folding surface 7 can be folded, so that the paper bag adjusting device can adapt to paper bags with different thicknesses, and the debugging is more convenient.

Example 3:

in comparison with embodiment 1, in the case where the other components are the same, the distinctive feature is the structure of the drive mechanism;

as shown in fig. 5, in this embodiment, the driving mechanism is a cam mechanism, the cam mechanism includes a driving gear 502 connected to one end of the rotating shaft 303, the driving gear 502 is engaged with an eccentric gear 503 connected to a power source of the whole machine, after the whole machine equipment is started, the eccentric gear 503 rotates to drive the rotating shaft 303 to generate instantaneous acceleration, so as to drive the chain 306 to accelerate, so that the speed of the paper beating rod 301 during beating paper is faster than the conveying speed of paper bags, and the bottom closing of the front folding surface 7 is ensured.

Example 4:

compared with the embodiment 1, in the case that other components are the same, the difference is characterized by the structure of the blank holder assembly;

as shown in fig. 8, in this embodiment, the edge pressing assembly 6 includes an air cylinder 605 connected to the frame 1, the telescopic end of the air cylinder 605 is connected to a pressing plate 606, and when a paper bag passes through, the air cylinders 604 on both sides drive the pressing plate 606 to move toward the bag bottom in the middle, so as to limit the two sides 7 of the bag bottom, and avoid the bag bottom from being tilted to affect the bottom closing of the front folded surface 7; after the front folding face 7 is bonded with the bag bottom, the air cylinder controls the pressing plate 606 to retract, so that the paper bag can be conveyed smoothly; simultaneously, the cylinder control can reduce the contact between the paper bag and the pressure rod, thereby reducing the damage to the paper bag.

Example 5:

compared with the embodiment 1, under the condition that other structures are the same, the difference characteristic is the structure of the edge pressing assembly;

as shown in fig. 9-10, in the present embodiment, the edge pressing assembly 6 includes sliding seats 607 disposed at both sides of the frame 1, the sliding seats 607 are slidably disposed on the frame 1 through rail sliding blocks and horizontally slide along the paper bag conveying direction, a mounting seat 608 is disposed between the sliding seats 607 and the conveying table 2, the mounting seat 608 is slidably disposed on the sliding seats 607 through a guide rod 609, and the guide rod 609 is in clearance fit with the mounting seat 608, so that the mounting seat 608 can realize short-distance movement in the up-down direction; the mount 608 is reciprocated between the transfer table 2 and the slide 607, thereby controlling the pressing member 610 on the mount 608 to move in the paper bag direction;

the automatic conveying device is characterized by further comprising a guide groove 611 for driving the mounting seat 608 to move, a workbench which is located at the bottom of the mounting seat 608 and is arranged in parallel with the conveying table 2 is arranged on the rack 1, the guide groove 611 is arranged on the workbench, the guide groove 611 comprises a working section 6110 for enabling the mounting seat 608 to be close to the conveying table 2 and a separation section 6111 for enabling the mounting seat 608 to be far away from the conveying table 2, and a transition section 6112 which slides in a circular manner is arranged between the separation section 6111 and the working section 6110; the bottom of the mounting seat 608 is provided with a pin shaft 612 matched with the guide groove 611, the pin shaft 612 is rotatably connected with the mounting seat 608 and is located at the bottom of the mounting seat 608, and when the slide seat 607 controls the mounting seat 608 to reciprocate, the pin shaft 612 drives the mounting seat 608 to approach and be away from the conveying table 2 under the driving of the guide groove 611; the horizontal bar is also provided with a lifting platform 613 corresponding to the guide groove, and the lifting platform 613 is abutted against the mounting seat 608; because the guide rod 609 is in clearance fit with the mounting seat 608, certain height adjustment can be achieved, the top of the mounting seat 609 is connected with a connecting block through the vertically arranged guide rod 609, the connecting block is also connected with the sliding seat through the guide rod 609, and a spring is arranged between the connecting block and the mounting seat 608, so that stable movement of the sliding seat and the mounting seat can be guaranteed, meanwhile, the spring can enable the mounting seat to be stably attached to the lifting platform 613 all the time, and smooth movement of the mounting seat is guaranteed; the bottom of the sliding seat 607 is provided with a rack 6140, the bottom is provided with a gear 6141 engaged with the rack 6140, and the gears 6141 on the two sides realize linkage through a transmission rod 6142 and rotate through a driving motor.

A guide rod 609 is vertically arranged on the mounting seat 608, a fixed block 10 is connected to the guide rod 609 in a sliding manner, an extrusion spring located on the guide rod 609 is arranged between the fixed block 10 and the mounting seat 608, and the extrusion spring can enable the mounting seat 608 to always abut against a workbench, so that stable movement of the pressing piece 610 is guaranteed; meanwhile, the fixing block 10 is connected with the sliding base 607 through the guide rod 609, so that the mounting base 608 can slide more stably, and the position of the pressing member 610 can be controlled more accurately.

The initial position of the sliding seat 607 is located on the working section 6110 and the lifting section 6131, when the paper bag is conveyed to a designated position, the driving motor rotates, the sliding seat 607 is controlled to move horizontally by the gear 6141 and the rack 6140, when the sliding seat moves to the descending section 6130, the mounting seat 608 drives the pressing piece 610 to press the paper bag, so that the limit to the side edge is realized, meanwhile, the moving speed of the sliding seat 607 is the same as the conveying speed of the paper bag, so that the pressing piece 610 and the paper bag synchronously advance, when the sliding seat 607 slides to the lifting section 6131, the mounting seat 608 drives the pressing piece 610 to lift, so that the pressing piece 610 is separated from the paper bag, and then the mounting seat slides to the separating section 6111, so that the pressing piece 610 is far away from the paper bag; at this time, the paper bag continues to move forward, and the driving motor rotates reversely to drive the sliding seat 607 to return to the initial position to wait for the next paper bag to arrive; meanwhile, rollers are arranged between the mounting seat 608 and the lifting platform 613, so that the mounting seat 608 can slide more smoothly; through above-mentioned mechanism can make to beat the paper pole and can fix the relative position of container bag in the transportation with conveyer when turning over the folded surface to the back and close the end to avoid the container bag position to take place the skew when receiving to beat the paper pole effect, influence subsequent production.

In the above mechanism, the rack and pinion driving the sliding seat 607 to reciprocate along the paper bag conveying direction may be driven by a ball screw instead, and the ball screw is prior art and will not be described in detail.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims (15)

1. A bottom closing device of a paper bag machine comprises a frame (1); the method is characterized in that: still include to be located frame (1):

the conveying platform (2) comprises a conveying belt for conveying the paper bags and an air suction assembly positioned below the conveying belt;

the front bottom closing assembly (3) is positioned above the conveying belt and comprises a paper beating rod (301) moving along the conveying direction of the paper bags and a driving mechanism (5) for driving the paper beating rod (301) to move, and when the paper beating rod (301) beats the paper bags, the driving mechanism drives the paper beating rod (301) to move faster than the conveying speed of the paper bags;

and the rear bottom closing component (4) is arranged behind the front bottom closing component (3) along the conveying direction of the paper bags, and is matched with the front bottom closing component (3) to turn over a pair of turning surfaces of the bag bottom along the crease.

2. Bottom closing device for paper bag machines according to claim 1, characterized in that it comprises:

the pair of edge pressing assemblies (6) are symmetrically arranged on two sides of the rack (1), the edge pressing assemblies (6) are located between the front bottom closing assembly (3) and the rear bottom closing assembly (4), and the edge pressing assemblies are used for limiting two side edges (9) of the bag bottom in the up-and-down direction when a paper beating rod (301) beats paper of the paper bag.

3. A paper bag machine bottom closing device according to claim 1 or 2, characterized in that said rear bottom closing assembly (4) comprises, arranged in succession along the direction of transport of the paper bags:

the air blowing assembly (401) is used for blowing air to the rear turnover surface (8) of the paper bag when the rear turnover surface (8) is separated from the adsorption of the conveying belt, so that the rear turnover surface (8) is turned over;

and the bottom closing roller group (402) is positioned behind the blowing assembly (401), comprises an upper roller (412) and a lower roller (422) which are vertically arranged on the rack (1), and is used for pressing the rear folded surface (8) of the paper bag to the bag bottom.

4. Bottom closing device for paper bag machines according to claim 1, characterized in that said front bottom closing assembly (3) comprises:

the pair of chain wheel groups are symmetrically arranged on two sides of the rack (1); the paper beating rod (301) is arranged between the pair of chain wheel sets.

5. Bottom closing device for paper bag machines according to claim 2, characterized in that said blank holder assembly (6) comprises:

depression bar (602), but set up and be located the conveyer top along container bag direction of delivery level, but depression bar (602) acts on the swing that bag bottom both sides limit (9) one end elasticity resets to the direction of keeping away from the container bag.

6. Bottom closing device for paper bag machines according to claim 2, characterized in that said blank holder assembly (6) comprises:

a pressing plate (606) which is arranged horizontally and perpendicular to the conveying direction of the paper bag;

and the air cylinder (605) drives the pressing plate (606) to reciprocate along the vertical paper bag conveying direction, so that the end part of the driving pressing plate (606) can act on two side edges (9) of the bag bottom.

7. Bottom closing device for paper bag machines according to claim 2, characterized in that said blank holder assembly (6) comprises:

the sliding seat (607) is arranged on the frame (1) and slides in a reciprocating manner along the conveying direction of the paper bags;

a mounting seat (608) which can reciprocate between the slide seat (607) and the conveying platform (2) through a guide rod (609) and can slide up and down along the slide seat (607);

a pressing piece (610), one end of which is fixedly connected to the mounting seat (608), and the other end of which extends towards the conveying table (2);

and the control mechanism controls the sliding seat (607) to drive the pressing piece (610) to reciprocate along the conveying direction of the paper bag, controls the pressing piece (610) to reciprocate between the conveying table (2) and the sliding seat (607) through the mounting seat (608), and can move downwards along the sliding seat (607) when passing through two side edges (9) of the bag bottom.

8. The bottom closing device of the paper bag machine as claimed in claim 1, 2 or 4, wherein the end surface of the paper beating rod (301) facing the paper bag conveying direction is an inclined surface which is inclined downwards along the bag conveying direction.

9. Bottom closing device for paper bag machines according to claims 1, 2 or 4, characterized in that the beating lever (301) is provided with a pressure wheel (307) which can rotate relative to it.

10. The bottom closing device of paper bag machine as claimed in claim 4, characterized in that said driving mechanism (5) is a servo motor (501) or a cam mechanism for driving the sprocket wheel set to move at variable speed.

11. The bottom closing device for paper bag machine as claimed in claim 7, wherein said control mechanism comprises:

the guide groove (611) is fixedly arranged on the rack (1) and is in sliding connection with the mounting seat (608) through a pin shaft (612); for driving the presser (610) away from or close to the transport table (2);

a lifting platform (613), the top surface of which is pressed against the bottom surface of the mounting seat (608) and corresponds to the guide groove (611) and is used for controlling the lifting of the pressing piece (610);

and the motion mechanism (614) is used for controlling the sliding seat (607) to reciprocate.

12. Bottom closing device for paper bag machines according to claim 11, characterized in that said channel (611) comprises:

the paper bag conveying device comprises a working section (6110) distributed along the conveying direction of the paper bag, a disengaging section (6111) and a transition section (6112) connected with the working section and the disengaging section, wherein the disengaging section (6111) extends outwards relative to the working section (6110).

13. Bottom closing device for paper bag machines according to claim 12, characterized in that said lifting platform (613) comprises:

a descending section (6130) corresponding to the working section (6110) and used for making the pressing piece (610) abut against the conveying table (2);

and the pair of lifting sections (6131) are arranged at two ends of the descending section (6130) and respectively correspond to the disengaging section (6111) and the working section (6110).

14. Bottom closing device of paper bag machine according to claim 11, characterized in that said movement means (614) comprise:

the rack (6140) is horizontally arranged at the bottom of the sliding seat (607);

a pair of gears (6141) rotating through a driving motor is meshed with the rack (6140), and the pair of gears (6141) are rotationally connected with the rack (1) through a transmission rod (6142).

15. A bottom closing device for paper bag machines according to claim 8, characterized in that the movement path of the paper beating rod (301) during beating is arranged gradually close to the conveyor belt along the paper bag conveying direction.

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