CN109823604B - Clamping jaw, high-efficiency transfer machine and automatic bagging machine - Google Patents

Abstract

The invention discloses a clamping jaw, a high-efficiency transfer machine and an automatic bagging machine, wherein the clamping jaw comprises at least three rod bodies distributed in two rows, the rod bodies of one row are staggered with the rod bodies of the other row, and in an opened state, the projections of the rod bodies of the two rows on the same projection plane parallel to the rod bodies of the two rows are not overlapped and are symmetrical to each other; in the closed state, the projections of the two rows of rod bodies on the same projection plane parallel to the two rows of rod bodies are partially overlapped so that the object to be clamped between the two rows of rod bodies is in an arc shape or a wave shape under the clamping force of two sides. According to the scheme, the two rows of rod bodies are partially overlapped when the clamping jaw is closed, and the two sides of the object to be clamped can be respectively applied with pressure with staggered changes in directions so that the object to be clamped is changed into a wave shape or an arc shape, so that the rigidity of the object to be clamped is improved, the deformation resistance can be effectively improved, the object to be clamped can be kept not to deform even when the object to be clamped is in certain contact with the packaging bag, reliable bagging is guaranteed, and a solid foundation is laid for automatic bagging.

Description

Clamping jaw, high-efficiency transfer machine and automatic bagging machine

Technical Field

The invention relates to the field of packaging, in particular to a clamping jaw, a high-efficiency transfer machine and an automatic bagging machine.

Background

The mask is a sanitary article, and is generally used for filtering air entering the mouth and nose when worn at the mouth and nose positions so as to prevent harmful gases, smell and spray from entering and exiting the mouth and nose of a wearer, and is made of gauze or paper and the like. The mask has a certain filtering effect on air entering the lung, and has a very good effect when the mask is worn when the mask works in environments polluted by dust and the like during the flow of respiratory infectious diseases.

After the mask is processed, the mask is required to be folded and leveled and is filled into a packaging bag, the existing packaging operation is mainly carried out by manual bagging, the manual operation efficiency is low, the labor intensity is high, and the mask is extremely easy to pollute, so that the mask is bagged by adopting automatic equipment, and the mask is a problem to be solved urgently.

The problem to be solved by adopting the automatic equipment for bagging is how to automatically convey and transfer the mask, and because the mask is soft and easy to change in texture, the mask is generally fed in a lying conveying mode to prevent deformation in the conveying process, and the mask on a conveying line is absorbed and moved into a packaging bag by combining vacuum absorption, however, the suction nozzle can interfere with the opening of the packaging bag during vacuum absorption, so that the mask cannot completely enter the mask, and the effectiveness of bagging is affected; in addition, because the mask is easy to change, the position accuracy of the mask and the opening of the packaging bag is ensured, and the mask and the packaging bag are prevented from being contacted, otherwise, the mask is changed and the problem that the mask cannot be effectively packaged is caused after the mask and the packaging bag are contacted.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a clamping jaw, a high-efficiency transfer machine and an automatic bagging machine.

The aim of the invention is achieved by the following technical scheme:

the clamping jaw comprises at least three rod bodies distributed in two rows, wherein the rod bodies of one row are staggered with the rod bodies of the other row,

in the open state, the projections of the two rows of rod bodies on the same projection plane parallel to the two rows of rod bodies are not overlapped and are symmetrical to each other;

in the closed state, the projections of the two rows of rod bodies on the same projection plane parallel to the two rows of rod bodies are partially overlapped so that the object to be clamped between the two rows of rod bodies is in an arc shape or a wave shape under the clamping force of two sides.

Preferably, in the clamping jaw, at least two rows of rod bodies have opposite peripheral surface areas which are cambered surfaces.

Preferably, in the clamping jaw, the opposite peripheral surface areas of the two rows of rod bodies comprise a slope or notch extending from the tail end to the upper end for a certain distance.

Preferably, in the clamping jaw, the distance between any one of the rod bodies in one row and two rod bodies in the other row adjacent to the rod body is equal.

Preferably, in the clamping jaw, two rows of rod bodies are respectively connected with an adapter block, two adapter blocks are respectively connected with the lower parts of two rotating handles of a scissor type transmission piece, and the upper parts of the two rotating handles are respectively connected with the air cylinder through a connecting shaft.

Preferably, in the clamping jaw, in a closed state, opposite surfaces of the two adapter blocks are parallel and fit.

The high-efficiency transfer machine comprises any clamping jaw and a rotating device for driving the clamping jaw to lift and revolve around a shaft.

Preferably, in the efficient transfer machine, the rotating device comprises a portal frame arranged on the base, a rotating shaft is rotatably and liftably arranged on the portal frame, the upper part of the rotating shaft is connected with a connecting plate equally dividing the outer peripheral surface of the rotating shaft, the periphery of the rotating shaft is sleeved with a driven gear, the driven gear is meshed with a driving gear, the driving gear is connected with a motor through a transmission shaft and a coupling, the transmission shaft is rotatably arranged on a supporting plate fixedly arranged on the portal frame, the motor is arranged on a mounting plate, and the mounting plate is connected with the supporting plate through a damping mechanism.

Preferably, in the efficient transfer machine, the rotating shaft is slidably inserted into a shaft sleeve rotatably arranged on the portal frame, no relative rotation exists between the rotating shaft and the shaft sleeve, the bottom of the rotating shaft is rotatably connected with a lifting plate, and the lifting plate is connected with a driving device for driving the lifting plate to lift.

Preferably, in the efficient transfer machine, the driving device comprises a screw rod and a guide post, the extending direction of the screw rod is perpendicular to the lifting plate, the movable nut of the screw rod is connected with the lifting plate, one end of the screw rod is connected with the lifting motor, and the guide post is inserted into a guide sleeve on the lifting plate.

Preferably, in the efficient transfer machine, the rotating shaft is connected with an index plate.

The automatic bagging machine comprises the efficient transfer machine, a flat object conveying line and a packaging bag supplying and opening conveying line.

The technical scheme of the invention has the advantages that:

the scheme is exquisite in design, simple in structure, through setting up two rows of body of rod to make them partial overlap when the clamping jaw is closed, thereby can apply pressure respectively to the both sides of the thing that waits to be held by them, and the crisscross change of pressure direction is in order to make waiting to hold the thing and become wave or arc, for the level waiting to hold the thing, wave or arc structure have higher rigidity, can effectively improve anti deformability, even wait to hold the thing and can keep waiting to hold the thing and be out of shape in order to guarantee reliable bagging-off when holding thing and wrapping bag produce certain contact, and establish solid foundation for automatic bagging-off.

The shape design of the rod body of the scheme not only effectively reduces the damage to the object to be clamped, but also fully ensures that the vertical bagging is not easy to contact with the packaging bag, and ensures the smoothness of bagging.

The symmetry and the homogeneity that wait to grasp the thing deformation have effectually been guaranteed in the position design of the body of rod of this scheme, have further guaranteed the smoothness nature of bagging-off.

This special rotary device design of scheme has both realized the synchronous lift and the rotation of a plurality of clamping jaws, is favorable to increasing the rhythm that treats the centre gripping thing to carry, improves bagging-off efficiency, simultaneously, can effectually protect the shaft coupling, prolongs the life of shaft coupling, reduces the part cost of equipment and the time cost of maintenance.

The flat thing transfer chain of this scheme is through the setting of special tool for treat the centre gripping thing and can vertically carry, thereby for follow-up snatchs the condition through the clamping jaw, effectual and clamping jaw agrees with, for the realization of automatic bagging-off lays solid foundation, and treat the transportation requirement of treating the centre gripping thing that the design of centre gripping thing tool can effectual adaptation multiple not unidimensional treat the centre gripping thing, the flexibility of application is good, the commonality is strong, is favorable to reducing enterprise equipment cost.

The automatic bagging machine of this scheme is with the effectual integration of multiple equipment to realize waiting the automatic bagging-off of centre gripping thing, very big improvement the efficiency of bagging-off, avoid the manual operation to produce wait that the centre gripping thing pollutes and bagging-off random problem simultaneously, be of value to improve product quality and improve the uniformity of product.

Drawings

FIG. 1 is a perspective view of a jaw of the present invention (cylinder not shown);

fig. 2 is a schematic view of a projection of the jaw of the present invention onto a projection surface a in an open state;

fig. 3 is a schematic view of a projection of the jaw of the invention onto a projection surface a in a closed condition (only the rod and the adapter block are shown in the figure);

FIG. 4 is a front view of the jaw of the present invention;

FIG. 5 is a front view of the high efficiency transfer of the present invention;

FIG. 6 is an enlarged view of a portion of the high efficiency transfer machine of the present invention;

FIG. 7 is a schematic view of a shock absorbing mechanism of the high efficiency transfer machine of the present invention;

FIG. 8 is a top view of the automatic bagging machine of the present invention (with portions of the pneumatic gripping jaws and bag opening nozzle configuration removed);

FIG. 9 is a front view of the flat article placement jig of the present invention;

FIG. 10 is a top view of the flat article placement jig of the present invention;

FIG. 11 is a schematic view of the structure of the bag opening jaw of the present invention;

fig. 12 is a schematic view of the bag opening process of the present invention.

Detailed Description

The objects, advantages and features of the present invention are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the invention, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the invention.

In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the scheme, the direction approaching the operator is the near end, and the direction separating from the operator is the far end, with reference to the operator.

The clamping jaw disclosed by the invention is described below with reference to the accompanying drawings, can be used for grabbing flat and easily-deformed objects such as masks, operating gowns, protective clothing, disinfection wrapping cloths, diapers, wiping cloths, wet tissues, sanitary napkins, sanitary pads, disposable sanitary cloths and the like, wherein the flat objects, the to-be-clamped parts and the to-be-packaged parts refer to the objects, the mask is described below by taking the mask as an example, as shown in the accompanying drawings 1, the clamping jaw comprises at least three rod bodies 1 distributed in two rows, the rod bodies of one row are staggered with the rod bodies of the other row,

in the open state, as shown in fig. 2, the projections 11, 12 of the two rows of rod bodies 1 on the same projection plane a parallel to the two rows of rod bodies are not coincident and are symmetrical to each other;

in the closed state, as shown in fig. 3, the projections 11, 12 of the two rows of rod bodies 1 on the same projection plane a parallel to the two rows of rod bodies are partially overlapped, so that the mask between the two rows of rod bodies is in an arc shape or a wave shape under the clamping force of two sides.

Under the closed state, the mask is changed into an arc shape or a wave shape from a flat state by the plurality of rod bodies 1, so that the rigidity of the mask is increased, and the problem that the mask cannot be packaged due to deformation caused by contact stress with the packaging bag is not easy to occur when the mask is placed in the packaging bag, and the reliability of bagging is effectively ensured.

In particular, as shown in fig. 1, the rods 1 are preferably three, and are distributed in triangle, so that in order to make the arc formed by the mask have a symmetrical structure so as to ensure that the most protruding area of the mask can correspond to the largest opening area of the packaging bag for packaging, the distance between any one of the rods in one row and two rods in the other row adjacent to the rod is equal, that is, the three rods are distributed in isosceles triangle, and when clamping, the rods in the middle position are in contact with the symmetry axis of the mask.

Meanwhile, each rod body 1 may be in various feasible shapes, such as a cuboid, a cylinder, an ellipsoid, and the like, preferably, as shown in fig. 1, at least two rows of rod bodies 1 have opposite outer peripheral surface areas that are arc surfaces 13, for example, the whole rod body is a cylinder, so that when the mask is clamped, the arc surfaces 13 of the rod bodies 1 can be better attached to the surface of the mask to enable the mask to be better deformed, and meanwhile, crease or damage caused on the mask due to structures such as edges and corners in the clamping process is avoided.

In addition, during bagging, the rod 1 is inserted into the bag, so that the smoothness of the bag is affected by avoiding interference with the mouth of the bag when the rod enters the bag, as shown in fig. 1, the opposite peripheral surface areas of the two rows of rods 1 include a slope or notch 14 extending a certain distance from the end to the upper end, and the bottom of the rod 1 is smaller than the upper part of the rod 1.

Further, the two rows of rod bodies 1 may be closed and opened by various known driving structures, preferably, as shown in fig. 1 and fig. 4, the two rows of rod bodies 1 are respectively connected with a switching block 2, the switching block 2 is Z-shaped, the first connecting plate 21 of the switching block is in bolt connection with the rod bodies 1, the rod bodies 1 protrude from the opposite surfaces 211 of the two first connecting plates 21, the two surfaces 211 maintain an acute angle in the open state of the clamping jaw, and the two surfaces 211 are mutually attached when the clamping jaw is closed, so that the maximum closed position of the rod bodies 1 can be limited, and excessive deformation of the mask caused by excessive shearing of the mask due to unlimited rotation of the two rows of rod bodies 1 is avoided; the second connecting plates 22 of the two adapter blocks 2 are respectively connected with the lower parts 311 of the two rotating handles 31 of the scissor-type transmission member 3 through bolts, and the connection positions of the second connecting plates 22 and the lower parts 311 can be switched, specifically, the connection positions are realized by respectively forming a plurality of groups of connecting holes or waist-shaped holes on the second connecting plates 22 and the lower parts 311, the upper parts 312 of the two rotating handles 31 are respectively connected with the same air cylinder 5 through connecting shafts 4, the air cylinder 5 drives two connecting shafts 4 to move oppositely, the clamping jaws are closed, and the clamping jaws are opened when the connecting shafts 4 move back.

The invention further discloses a high-efficiency transfer machine, as shown in fig. 5, comprising the clamping jaw 10, wherein the clamping jaw 10 is arranged on a rotating device 20 for driving the clamping jaw to lift and revolve around an axis.

In detail, as shown in fig. 5 and 6, the rotating device 20 includes a gantry 201 disposed on a base 2070, a rotating shaft 202 penetrating through a transverse plate is disposed on the gantry 201, and a connection plate 203 equally dividing an outer circumferential surface is connected to an upper portion of the rotating shaft 202, as shown in fig. 5, 4 connection plates 203 may be provided, of course, other numbers, such as 6, 8, etc., and the clamping jaw 10 is disposed at an end of each connection plate 203.

The structure of the rotating shaft 2 is as follows, as shown in fig. 5, the rotating shaft 202 is slidably inserted into a shaft sleeve 2030 disposed on the gantry 201, the bottom of the rotating shaft 202 is rotatably connected with a lifting plate 2040, and the lifting plate 2040 is connected with a driving device 2050 for driving the lifting plate to lift, so that the rotating shaft can lift relative to the gantry 201.

As shown in fig. 6, the driving device 2050 includes a screw rod 20501 and a guide post 20502, the extending direction of the screw rod 20501 is perpendicular to the lifting plate 2040, one end of the screw rod 20501 is inserted into a bearing (not shown in the drawing) on a transverse plate of the portal frame 201, the other end of the screw rod is inserted into a bearing on the base and is connected with the lifting motor 20503, a movable nut of the screw rod 20501 is connected with the lifting plate 2040, and the guide post 20502 is inserted into a guide sleeve 20504 on the lifting plate 2040.

Of course, in other embodiments, the driving device 2050 may also adopt a structure of a cylinder, an electric cylinder, an oil cylinder, etc., and therefore, a structure of a screw and a motor is adopted, because the structure is more simplified, the occupied space is small, the assembly is easy, and the guide can be performed by using the screw, so as to ensure the precision.

In addition, in order to realize the rotation of the rotating shaft 202, as shown in fig. 6, the shaft sleeve 2030 is inserted into a bearing (not labeled in the drawing) located on the gantry 201, and there is no relative rotation between the rotating shaft 202 and the shaft sleeve 2030, for example, a set of grooves 2021 extending from one end to the other end of the rotating shaft 202 is formed on the outer peripheral surface of the rotating shaft 202, a guiding protruding strip (not shown in the drawing) matching with the grooves 2021 is protruding at the hole wall of the central through hole of the shaft sleeve 2030, each guiding protruding strip is embedded into one groove 2021, and a driven gear 204 located between the lifting plate 2040 and the transverse plate of the gantry 201 is further sleeved on the outer periphery of the shaft sleeve 2030, and the driven gear 204 is meshed with the driving gear 205, in other embodiments, the driven gear 204 and the driving gear 205 may be a transmission structure of a belt pulley, a belt, or a chain, which is not described in detail in the prior art.

As shown in fig. 6, the driving gear 205 is coaxially connected with a transmission shaft 206, the transmission shaft 206 is connected with a speed reducer through a coupling 207, the speed reducer is connected with a motor 208, the transmission shaft 206 is rotatably disposed on a support plate 209 fixed on the gantry 201, the motor 208 is disposed on a mounting plate 2010, and the mounting plate 2010 is connected with the support plate 209 through a damping mechanism 2020.

As shown in fig. 7, the damping mechanism 2020 includes a set of damping pins 20201 vertically fixed on the mounting plate 2010, a connecting bolt 20202 vertically penetrating through the supporting plate 209 is inserted into an upper end of the damping pins 20201, and a slight gap exists between the connecting bolt 20202 and the supporting plate 209, so that the damping pins 20201 and the supporting plate 209 can slightly move, a nut 20203 located between the supporting plate 209 and the damping pins 20201 is disposed on the connecting bolt 20202, and a spring 20204 is disposed between a head of the connecting bolt 20202 and the supporting plate 209.

The support plate 209 and the mounting plate 2010 are connected by the damper mechanism 2020 because: in operation, the shaft 202 needs to be frequently started and stopped, and the upper portion of the shaft 2 is provided with a plurality of connecting plates 203 and clamping jaws 10 which extend longer, so when the motor 208 stops rotating, the shaft 2 has a continuous rotating trend due to the force exerted by the rotation inertia of the connecting plates 203 and the clamping jaws 10, if the supporting plate 209 and the mounting plate 2010 are not connected, the inertial torsion force exerted by the shaft 202 is finally transmitted to the coupling 207, so that one end of the coupling 207 is frequently damaged due to the torsion force, and after the damping mechanism 2020 is arranged between the mounting plate 2010 and the supporting plate 209, most of the torsion force generated by the shaft 2 is transmitted to the damping mechanism 2020 through the supporting plate 209, and the damping is realized through the torsion of the damping pin 20201 and the deformation of the spring 20204, so that the coupling 207 can be effectively protected, the coupling is prevented from being frequently damaged due to the stress, and the service life of the coupling is prolonged.

Further, as shown in fig. 6, since the rotating shaft 2 is provided with a plurality of connection plates 23, in order to ensure the position accuracy of the clamping jaw 10 on each connection plate 23 after the rotating shaft 2 rotates, it is necessary to accurately control the rotation angle of the rotating shaft 2, and the rotating shaft 202 is connected with an index plate 2060.

The invention also discloses an automatic bagging machine, which comprises the efficient transfer machine, a flat object conveying line 30 and a packaging bag supplying and opening conveying line 40 as shown in fig. 8.

As shown in fig. 8, the flat object conveying line 30 includes a chain conveying line 301, a group of flat object longitudinal placement tools 302 are arranged on two parallel chains of the chain conveying line at equal intervals, as shown in fig. 9 and fig. 10, the flat object longitudinal placement tools 302 include a bearing plate 3021 connected with the chains, a pair of parallel first enclosing baffles 3022 arranged at intervals are arranged on the bearing plate 3021, three groups of guide pins 3023, 3024 and 3025 are erected on the two first enclosing baffles 3022, and the three groups of guide pins 3023, 3024 and 3025 and the first enclosing baffles enclose a hollow accommodating groove together, and the groove length L1 and/or the groove width W and/or the groove depth of the hollow accommodating groove can be adjusted, and the hollow accommodating groove is used for vertically placing a mask; according to the shape of different masks, the shape of the hollowed-out placing groove can be changed by adjusting the positions of the two groups of guide pins 3023 and 3024 on two sides.

Specifically, as shown in fig. 9 and fig. 10, two first enclosure boards 3022 are respectively provided with a connection hole 30221 for the guide pins 3023 and 3024 to pass through, the connection hole 30221 includes a group of vertical arrangement holes and an oblique arrangement hole having a certain included angle with the vertical arrangement holes, and when the guide pins 3023 and 3024 on two sides are located in the vertical arrangement holes, the guide pins 3023, 3024 and 3025 enclose a rectangular hollow placement groove; when the guide pins 3023 and 3024 on both sides are partially located in the oblique arrangement holes, the guide pins 3023, 3024 and 3025 enclose a hollow placement groove with a large opening and a small bottom, that is, the slot length L2 of the hollow receiving groove is not smaller than the slot length L1 of the hollow receiving groove, so that the mask can be conveniently placed in the hollow placement groove.

In addition, because the mask may have different thicknesses, at least one of the two first enclosure blocks 3022 is fixed on the carrying board 3021, the other one of the two first enclosure blocks 3022 may move relative to the carrying board 3021, and the two first enclosure blocks 3022 are connected into a whole by the bolt 3026 and the nut 3027, so that the gap width between the two first enclosure blocks 3022 may be adjusted by adjusting the position of the nut 3027 on the bolt 3026, so as to adapt to the mask placement requirement with different thicknesses.

Moreover, symmetrical avoidance notches 30224 are formed on the two first surrounding blocks 3021, so as to provide an action space for the clamping of the rod body of the clamping jaw 10, and avoid interference; meanwhile, flanges 30222 extending outwards are respectively arranged at the top of the first enclosure 3021, and the flanges 30222 at two sides form a horn-shaped opening, so that guidance is provided when the mask is placed in the hollowed-out accommodating groove.

On the other hand, because the different masks have different lengths, the height of the guide pins 3025 at the bottom needs to be adjustable to adapt to the placement requirements of the masks with different lengths, and correspondingly, as shown in fig. 9, a plurality of groups of adjusting holes 30223 with height differences are provided on the first enclosure 3022, and the depth of the hollowed-out placement groove can be adjusted to adapt to different masks by adjusting the adjusting holes 30223 where the guide pins 3025 at the bottom are located.

Further, since the widths of the different masks often have differences, to adapt to the placement requirements of the masks with different widths, the space between the two sets of guide pins 3023 and 3024 on two sides needs to be adjustable, and preferably, as shown in fig. 9, a connection hole 30221 formed in the first enclosure 3022 for the two sets of guide pins 3023 and 3024 to pass through is a waist-shaped hole; and, two ends of each group of guide pins 3023, 3024 are respectively connected with two opposite side plates 30281 of a second enclosure 3028, and at the same time, oblique distribution holes 30282 and vertical distribution holes 30283 matched with the connection holes 30221 are formed on the side plates 30281, and in a preferred embodiment, the upper several holes of the oblique distribution holes and the vertical distribution holes on the first enclosure are replaced by a round rectangular hole; the bottom plates 30284 of the two second enclosures 3028 are screwed on the carrying plate 3021, and the bottom plates 30284 adjust the relative position with the carrying plate 3021 through the waist-shaped connecting holes 30285 formed on the bottom plates.

Still further, as shown in fig. 8, the bag supplying and opening conveyor line 40 includes a turntable 401 capable of rotating around its axis, a set of pneumatic clamping jaws 402 are uniformly distributed at the edge positions of the turntable 401, and the pneumatic clamping jaws 402 are used for clamping the two side edge positions of the bag.

The bag supplying and opening conveying line 40 further includes a bag opening clamping claw 403 located at the front end of the bagging position, as shown in fig. 11, the bag opening clamping claw 403 includes two symmetrically disposed expansion plates 4031, the expansion plates 4031 include at least two sections 40311 and 40312 bent to be convex, and in a closed state, the bottoms of the two expansion plates 4031 are abutted against and combined into a V-shaped structure; in the open state, the two expansion plates keep a gap and are in an inverted splayed structure; in addition, during bagging, the rod body of the clamping jaw needs to be located between the two expansion plates 4031, so that the two expansion plates 4031 are connected through a connecting plate 4032 to drive the two expansion plates 4031 to translate, open and close or rotate, to open and close the opening and closing device 4033, so that no shielding exists above the two expansion plates 4031, the opening and closing device 4033 is arranged on the rotating lifting device 4034 for driving the opening and closing device 4033 to lift and rotate, and the rotating lifting device 4034 can be of various known structures, for example, can be the same as the structure of the rotating device 20, and the prior art is omitted.

As shown in fig. 12, the bag supplying and opening conveyor line 40 further includes a bag opening suction nozzle 404 at the front end of the bagging position, and the bag opening suction nozzle 404 applies suction to both sides of the bag opening of the bag positioned on the pneumatic clamping jaw 402 by vacuum suction, so that the bag opening of the bag is opened so that the bag opening clamping jaw 403 extends into the bag.

When the bag is opened, the rotary table 401 enables the packaging bag on one pneumatic clamping jaw 402 to be positioned between two suction nozzles of the bag opening suction nozzle 404, and as shown in 12a, the two bag opening suction nozzles move oppositely and are respectively clung to and adsorbed on one side surface of the packaging bag; then, as shown in fig. 12b, the bag opening suction nozzle 404 moves back to open the package, and at this time, the bag opening gripper 403 is kept closed; subsequently, as shown in 12c, the bag opening gripper 403 moves downward into the packaging bag, and at the same time, the bag opening suction nozzle 404 stops sucking; the rotary table 401 drives the pneumatic clamping jaw 402 to rotate to a bagging position, meanwhile, the rotary lifting device 4034 drives the bag opening clamping jaw 403 to synchronously rotate in the same direction along with the pneumatic clamping jaw 402, and as shown in 12d, the opening and closing device 4033 drives the expansion plate 4031 to open, so that a bag mouth of a packaging bag is opened, and after the clamping jaw inserts a mask into the packaging bag, the rotary lifting device 4034 drives the bag opening clamping jaw 403 to ascend and reversely rotate to a packaging bag position where a next bag needs to be opened.

When the whole bagging machine works, the starting, stopping and working state switching of various devices can be controlled by various known control devices, such as a PLC system, a computer and the like and combined with signals of various sensors, and the starting, stopping and working state switching of various devices is not the key point of the scheme in the prior art and is not repeated here.

During specific operation, the folded and flat mask is vertically placed into the hollowed-out accommodating groove of the flat object longitudinal placing jig 302 by manpower or through automatic equipment, the flat object longitudinal placing jig 302 is conveyed to a transfer position along with a chain conveying line, the rotating device 20 drives one clamping jaw 10 to rotate to the transfer position and then descend, then the clamping jaw 10 is closed to clamp the mask in the flat object longitudinal placing jig 302, the rotating device 20 drives the clamping jaw 10 to ascend and rotate to the position above a packaging bag with an opening kept on the packaging bag supplying and opening conveying line 40, then the rotating device 20 drives one clamping jaw 10 to descend to the position where the mask on the clamping jaw 10 is inserted into the packaging bag, the clamping jaw 10 is loosened and moves upwards, and the rotating device 20 drives the clamping jaw 10 to rotate again, at the moment, the other clamping jaw 10 clamping the mask rotates to the bagging position; simultaneously, the bag supplying and opening conveying line 40 drives the pneumatic clamping jaw 402 to rotate until the other pneumatic clamping jaw 402 clamping the empty bag moves to the bagging position for bagging the next mask, and the process continues.

Of course, in other embodiments, the automatic bagging machine may further include a loading robot, such as a combined structure of a manipulator and a 6-axis robot, for automatically adding a bag to be bagged to the flat object longitudinal fixture, and further include a blanking conveying device for receiving and conveying the bagged product.

The invention has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the invention.

Claims (8)

1. Clamping jaw, its characterized in that: comprises at least three rod bodies (1) which are distributed in two rows, the two rows of rod bodies (1) are arranged in a staggered way,

in the open state, the projections (11, 12) of the two rows of rod bodies on the same projection plane (A) parallel to the two rows of rod bodies are symmetrical and do not coincide;

in the closed state, projections (11, 12) of the two rows of rod bodies on the same projection surface (A) parallel to the projections are partially overlapped so that the object to be clamped between the two rows of rod bodies (1) is in an arc shape or a wave shape under the clamping force of two sides;

at least opposite peripheral surface areas of the two rows of rod bodies (1) are cambered surfaces (13); the spacing between any one rod body in one row and two adjacent rod bodies in the other row is equal;

two rows of rod bodies (1) are respectively connected with an adapter block (2), two adapter blocks (2) are respectively connected with the lower parts (311) of two rotating handles (31) of a scissor type transmission piece (3), and the upper parts (312) of the two rotating handles (31) are respectively connected with an air cylinder (5) through connecting shafts (4).

2. A jaw as claimed in claim 1, characterized in that: the outer peripheral surface areas of the two rows of rod bodies opposite each other comprise a bevel or notch (14) extending from the end to the upper end a certain distance.

3. A jaw as claimed in claim 1, characterized in that: in the closed state, the opposite surfaces (211) of the two adapter blocks (2) are parallel and fit.

4. High-efficient machine of carrying, its characterized in that: a clamping jaw (10) according to any one of claims 1-3, further comprising a rotation device (20) for driving the clamping jaw (10) up and down and revolving around an axis.

5. The efficient transfer machine of claim 4, wherein: the rotating device (20) at least comprises a portal frame (201) arranged on a base, a rotating shaft (202) is rotatably and vertically arranged on the portal frame (201), a connecting plate (203) for equally dividing the outer peripheral surface of the rotating shaft (202) is connected to the upper portion of the rotating shaft (202), a driven gear (204) is sleeved on the periphery of the rotating shaft (202), the driven gear (204) is meshed with a driving gear (205), the driving gear (205) is connected with a motor (208) through a transmission shaft (206) and a coupler (207), the transmission shaft (206) is rotatably arranged on a supporting plate (209) fixedly arranged on the portal frame (201), the motor (208) is arranged on a mounting plate (2010), and the mounting plate (2010) is connected with the supporting plate (209) through a damping mechanism (2020).

6. The efficient transfer machine of claim 5, wherein: the rotating shaft (202) is slidably inserted into a shaft sleeve (2030) rotatably arranged on the portal frame (201), no relative rotation exists between the rotating shaft (202) and the shaft sleeve (2030), the bottom of the rotating shaft (202) is rotatably connected with a lifting plate (2040), and the lifting plate (2040) is connected with a driving device (2050) for driving the lifting plate to lift.

7. The efficient transfer machine of claim 6, wherein: the driving device (2050) comprises a screw rod (20501) and a guide post (20502), the extending direction of the screw rod (20501) is perpendicular to the lifting plate (2040), a movable nut of the screw rod (20501) is connected with the lifting plate (2040), one end of the screw rod (20501) is connected with a lifting motor (20503), and the guide post (20502) is inserted into a guide sleeve (20504) on the lifting plate (2040).

8. Automatic bagging machine, its characterized in that: comprising the high-efficiency transfer machine according to any one of claims 4 to 7, further comprising a flat article transport line (30) and a packaging bag supply and opening transport line (40).

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