CN113277179B

CN113277179B - Carton sealing machine with carton weight screening device

Info

Publication number: CN113277179B
Application number: CN202110777762.2A
Authority: CN
Inventors: 葛峰
Original assignee: Nantong Tiancheng Packaging Co ltd
Current assignee: Nantong Tiancheng Packaging Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-09-17
Anticipated expiration: 2041-07-09
Also published as: CN113277179A

Abstract

The invention discloses a carton sealing machine with a carton weight screening device, which comprises a base, wherein a sliding cavity is arranged in the base, a threaded rod is horizontally arranged in the sliding cavity, two ends of the threaded rod are rotatably connected with the inner walls of the front side and the rear side of the sliding cavity, a driving motor is arranged on the rear side of the sliding cavity, the rear end of the threaded rod extends to the outside and is fixedly connected with the output end of the driving motor, a sliding block is connected onto the threaded rod in a threaded manner and is slidably connected with the inner wall of the sliding cavity, a first strip-shaped opening is arranged at the upper end of the sliding cavity, a connecting block is fixedly connected to the upper end of the sliding block, the upper end of the connecting block penetrates through the first strip-shaped opening and is fixedly connected with a bearing block, and a power supply is arranged on the left side of the bearing block. This case sealer can filter the box according to weight automatically in the use, can separate heavier and lighter box simultaneously, need not personnel and carries out follow-up screening, has reduced staff's labour greatly, has improved the efficiency of production.

Description

Carton sealing machine with carton weight screening device

Technical Field

The invention relates to the technical field of carton sealing machines, in particular to a carton sealing machine with a carton weight screening device.

Background

Case sealer mainly is applicable to the joint sealing packing of carton, both can the unit operation, also can use with the assembly line is supporting, but its single-box operation also can form the packing assembly line with equipment such as carton shaping case unpacking machine, case packer, labeller, bundler, pallet stacker, conveyer and use, for the equipment that packing assembly line operation is indispensable, nevertheless current case sealer still has following problem in the use:

because article can be placed to the incasement, so before carrying out the carton encapsulation, need people to place the case on the electronic scale, the screening of weighing to the case, guarantee that the quality of incasement article can reach the requirement of joint sealing, carry out the joint sealing to the box that accords with the quality again and handle, this kind of mode makes the process of joint sealing comparatively loaded down with trivial details, production efficiency has been reduced greatly, also there is the case sealer that can carry out weight detection on the market at present, however these case sealers can only screen whether the weight to the box accords with the standard, can't judge that the box is heavier or lighter, need the staff to distinguish once more, staff's the amount of labour has been increased, therefore how reasonable this problem of solution is that we need consider.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides the carton sealing machine with the carton weight screening device.

In order to achieve the purpose, the invention adopts the following technical scheme: the novel sliding device comprises a base, wherein a sliding cavity is arranged in the base, a threaded rod is horizontally arranged in the sliding cavity, two ends of the threaded rod are rotatably connected with the inner walls of the front side and the rear side of the sliding cavity, a driving motor is installed on the rear side of the sliding cavity, the rear end of the threaded rod extends to the outside and is fixedly connected with the output end of the driving motor, a sliding block is connected onto the threaded rod in a threaded manner and is slidably connected with the inner wall of the sliding cavity, a first strip-shaped opening is formed in the upper end of the sliding cavity, a connecting block is fixedly connected to the upper end of the sliding block, the upper end of the connecting block penetrates through the first strip-shaped opening and is fixedly connected with a bearing block, a power supply is installed on the left side of the bearing block, and a compression cavity is arranged in the bearing block; the compression mechanism is arranged in the compression cavity and comprises a compression plate arranged in the compression cavity, the compression plate is connected with the inner wall of the compression cavity in a sliding mode, the lower end of the compression plate is elastically connected with the inner bottom of the compression cavity through two compression springs, the upper end of the compression plate is fixedly connected with a connecting rod, the upper end of the connecting rod extends to the outside, a placing table is arranged at the upper end of the connecting rod, a rotating groove is formed in the lower end of the placing table, a cross rod is horizontally arranged in the rotating groove, two ends of the cross rod are fixedly connected with the inner walls of the front side and the rear side of the rotating groove, and the upper end of the connecting rod extends into the rotating groove and is rotatably connected with the cross rod; a rectangular cavity is arranged in the placing table and is positioned above the rotating groove, a sliding mechanism is arranged in the rectangular cavity and comprises a rotating rod horizontally arranged in the rectangular cavity, two ends of the rotating rod are rotatably connected with the inner walls of the left side and the right side of the rectangular cavity, the right end of the rotating rod extends to the outside and is fixedly connected with a knob, two thread layers are symmetrically arranged on the outer wall of the part of the rotating rod positioned in the rectangular cavity, two thread layers on the rotating rod are both in threaded connection with moving blocks, the two moving blocks are both in sliding connection with the inner walls of the rectangular cavity, and a second strip-shaped opening is arranged above the rectangular cavity; the placing table is provided with a weight detection mechanism, and the weight detection mechanism is used for screening the weight of the box on the placing table; two all be equipped with in the removal piece and erect the groove, two erect the inslot and all be equipped with fixture, two fixture is used for placing the case on the platform and carry out the centre gripping.

Preferably, weight detection mechanism sets up the rectangular channel placing the platform left and right sides including the symmetry, two all be equipped with in the rectangular channel and support the piece, two support the piece all with the inner wall sliding connection of the rectangular channel that corresponds, two support the adjacent surface of piece and correspond the rectangular channel one side inner wall of keeping away from the notch and all pass through reset spring elastic connection, two support the back of the looks of piece and all install the button head and support the pole, two the button head supports the pole and keeps away from the one end that corresponds the piece of supporting and extend to the external world, two support the piece and all have electric conductivity, two the interior bottom and the interior top of rectangular channel all are equipped with and correspond and support piece matched with conducting strip, the lower extreme of placing the platform all through first conductive spring elastic connection with the left and right sides inner wall of connecting rod.

Preferably, the upper end fixedly connected with two risers of base, two risers dislocation sets are in the left and right sides of base top, two the riser is close to the one side of placing the platform and all installs the wedge-shaped piece with the pole matched with is supported to the button head that corresponds.

Preferably, fixture is including setting up the grip block in erecting the inslot, grip block and the inner wall sliding connection who erects the groove, the upper end of grip block runs through second bar opening and extends to the external world, the lower extreme of grip block passes through second conductive spring elastic connection with the interior bottom that erects the groove.

Preferably, a transverse groove is formed in the left side of the rotating groove, an electromagnet is arranged on one side, away from the rotating groove, of the transverse groove, a magnetic sliding block is arranged in the transverse groove, the magnetic sliding block is connected with the inner wall of the transverse groove in a sliding mode, the adjacent surface of the magnetic sliding block and the electromagnet is elastically connected through a telescopic spring, a limiting rod is fixedly connected to the right side of the magnetic sliding block, a limiting groove matched with the limiting rod is formed in the connecting rod, and one side, away from the magnetic sliding block, of the limiting rod extends into the limiting groove.

Preferably, the side wall of the knob is provided with a plurality of vertical lines along the circumference thereof.

Preferably, the thread directions of the two thread layers on the rotating rod are opposite.

Preferably, place and be equipped with electrically conductive chamber in the platform, electrically conductive chamber is located the top of rotating the groove, electrically conductive chamber's interior bottom and interior top all are equipped with the conducting block, electrically conductive intracavity packing has mercury, audible-visual annunciator is installed in the left side of carrier block.

The invention has the following beneficial effects:

1. compared with the prior art, when the box body is placed on the placing table for box sealing treatment, when the weight of the box body meets the standard, the box body can move to the lower part of the box sealing structure for box sealing treatment, when the box body is light or heavy, the placing table can be inclined leftwards or rightwards, so that the box body falls onto the object receiving plates at two sides, artificial weighing treatment is not needed before box sealing, and the labor capacity of workers is greatly reduced;

2. compared with the prior art, the lighter box body can fall to the left side, the heavier box body can fall to the right side, and people can judge whether the box body is heavier or lighter without weighing again in the subsequent treatment of the box body which does not meet the standard, so that the labor amount of workers is further reduced, and the production efficiency is improved;

3. compared with the prior art, when the box is heavier or lighter, place the platform this moment and can take place to deflect, when placing the platform and take place to deflect, this moment mercury can contact with two conducting blocks, when mercury and two conducting blocks contact, can make audible-visual annunciator circular telegram report to the police this moment to remind people to handle heavier or lighter box.

Drawings

Fig. 1 is a schematic structural view of a carton sealing machine with a carton weight screening device according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is a right side schematic view of FIG. 1;

FIG. 5 is a perspective view of the button;

FIG. 6 is a schematic perspective view of a wedge block;

FIG. 7 is a perspective view of the placement table;

FIG. 8 is a diagram illustrating the normal operation of the present invention;

FIG. 9 is a schematic structural view of example 2 of the present invention;

fig. 10 is an enlarged schematic view of the structure at C in fig. 9.

In the figure: the device comprises a base 1, a driving motor 2, a bearing block 3, a connecting rod 4, a placing table 5, a knob 6, a round-head abutting rod 7, a vertical plate 8, a wedge-shaped block 9, a box sealing structure 10, a sliding cavity 11, a sliding block 12, a threaded rod 13, a first strip-shaped opening 14, a compression cavity 15, a compression plate 16, a power supply 17, a compression spring 18, a conductive block 19, a first conductive spring 20, a rectangular cavity 21, a second strip-shaped opening 22, a rotating rod 23, a rectangular groove 24, a abutting block 25, a conductive plate 26, a return spring 27, a movable block 28, a vertical groove 29, a second conductive spring 30, a clamping block 31, an electromagnet 32, a transverse groove 33, an expansion spring 34, a limiting groove 35, a limiting rod 36, a magnetic sliding block 37, an acousto-optic alarm 38, a conductive cavity 39 and a rotating groove 40.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

Referring to fig. 1-8, a carton sealing machine with a carton weight screening device comprises a base 1, a sliding cavity 11 is arranged in the base 1, a threaded rod 13 is horizontally arranged in the sliding cavity 11, two ends of the threaded rod 13 are rotatably connected with the inner walls of the front side and the rear side of the sliding cavity 11, a driving motor 2 is arranged at the rear side of the sliding cavity 11, the rear end of the threaded rod 13 extends to the outside and is fixedly connected with the output end of the driving motor 2, a sliding block 12 is connected on the threaded rod 13, the sliding block 12 is slidably connected with the inner wall of the sliding cavity 11, the inner wall of the sliding cavity 11 can play a role in guiding the sliding block 12, a first strip-shaped opening 14 is arranged at the upper end of the sliding cavity 11, a connecting block is fixedly connected with the upper end of the sliding block 12, the upper end of the connecting block penetrates through the first strip-shaped opening 14 and is fixedly, a control panel can be arranged on the base 1 to control the driving motor 2, the driving motor 2 is a servo motor and can control the threaded rod 13 to rotate clockwise or anticlockwise, object receiving plates can be arranged on the left side and the right side of the base 1, and a sliding box body is prevented from directly falling to the ground;

a compression mechanism is arranged in the compression cavity 15 and comprises a compression plate 16 arranged in the compression cavity 15, the compression plate 16 is in sliding connection with the inner wall of the compression cavity 15, the lower end of the compression plate 16 is elastically connected with the inner bottom of the compression cavity 15 through two compression springs 18, the upper end of the compression plate 16 is fixedly connected with a connecting rod 4, the upper end of the connecting rod 4 extends to the outside, a placing table 5 is arranged at the upper end of the connecting rod 4, a rotating groove 40 is arranged at the lower end of the placing table 5, a cross rod is horizontally arranged in the rotating groove 40, two ends of the cross rod are fixedly connected with the inner walls of the front side and the rear side of the rotating groove 40, and the upper end of the connecting rod 4 extends into the rotating groove 40 and is rotatably connected with the cross rod;

a rectangular cavity 21 is arranged in the placing table 5, the rectangular cavity 21 is positioned above the rotating groove 40, a sliding mechanism is arranged in the rectangular cavity 21, the sliding mechanism comprises a rotating rod 23 horizontally arranged in the rectangular cavity 21, two ends of the rotating rod 23 are rotatably connected with the inner walls of the left side and the right side of the rectangular cavity 21, the right end of the rotating rod 23 extends to the outside and is fixedly connected with a knob 6, a plurality of vertical grains are arranged on the side wall of the knob 6 along the circumferential direction, used for increasing the friction force between the knob 6 and the human hand, two thread layers are symmetrically arranged on the outer wall of the part of the rotating rod 23 positioned in the rectangular cavity 21, the thread directions of the two thread layers on the rotating rod 23 are opposite, therefore, in the rotating process of the knob 6, the two moving blocks 28 move oppositely or oppositely, the two thread layers on the rotating rod 23 are both in threaded connection with the moving blocks 28, the two moving blocks 28 are both in sliding connection with the inner wall of the rectangular cavity 21, and a second strip-shaped opening 22 is arranged above the rectangular cavity 21;

wherein, the placing table 5 is provided with a weight detection mechanism, the weight detection mechanism is used for screening the weight of the box on the placing table 5, the weight detection mechanism comprises rectangular grooves 24 symmetrically arranged at the left side and the right side of the placing table 5, two abutting blocks 25 are arranged in the two rectangular grooves 24, the two abutting blocks 25 are both in sliding connection with the inner walls of the corresponding rectangular grooves 24, the adjacent surfaces of the two abutting blocks 25 are both in elastic connection with the inner wall of one side, far away from the notch, of the corresponding rectangular groove 24 through a reset spring 27, the round head abutting rods 7 are both arranged at the opposite back surfaces of the two abutting blocks 25, each round head abutting rod 7 is composed of an abutting rod and a hemispherical fixed block, the hemispherical fixed block is fixedly connected with one end, far away from the corresponding abutting block 25, of the two round head abutting rods 7, far away from the ends of the corresponding abutting blocks 25, the two abutting blocks 25 are both provided with electric conductivity, the inner bottom parts and the inner top parts of the two rectangular grooves 24 are both provided with conducting strips 26 matched with the corresponding abutting blocks 25, the lower end of the placing table 5 is elastically connected with the inner walls of the left side and the right side of the connecting rod 4 through a first conductive spring 20, when two abutting blocks 25 are in contact with two corresponding conductive sheets 26, the abutting blocks 25 and the two corresponding conductive sheets 26 form a conductive unit, when the conductive unit on the left side is conducted, the power supply 17, the conductive unit, the first conductive spring 20 and the second conductive spring 30 on the right side form a closed loop through wires, when the conductive unit on the right side is conducted, the power supply 17, the conductive unit, the first conductive spring 20 and the second conductive spring 30 on the left side form a closed loop through wires, the two closed loops form a parallel loop, the upper end of the base 1 is fixedly connected with two vertical plates 8, the two vertical plates 8 are arranged on the left side and the right side above the base 1 in a staggered manner, one side of each vertical plate 8 close to the placing table 5 is provided with a wedge block 9 matched with the corresponding round head abutting rod 7, when the round-head support rod 7 is contacted with the corresponding wedge-shaped block 9, both the round-head support rod 7 and the support block 25 move towards the direction far away from the corresponding wedge-shaped block 9.

Wherein, all be equipped with perpendicular groove 29 in two movable blocks 28, all be equipped with fixture in two perpendicular grooves 29, two fixture are used for holding the case of placing on the platform 5, fixture is including setting up the grip block 31 in perpendicular groove 29, grip block 31 and the inner wall sliding connection who erects groove 29, the upper end of grip block 31 runs through second bar opening 22 and extends to the external world, the lower extreme of grip block 31 and the interior bottom of erecting groove 29 pass through second conductive spring 30 elastic connection, after first conductive spring 20 and second conductive spring 30 circular telegram, because every coil of first conductive spring 20 and second conductive spring 30 all can produce magnetic field, the magnetic field opposite direction that every adjacent coil produced, every two adjacent coils can produce the appeal, thereby make first conductive spring 20 and second conductive spring 30 shrink.

The left side of the rotating groove 40 is provided with a transverse groove 33, one side of the transverse groove 33, which is far away from the rotating groove 40, is provided with an electromagnet 32, the electromagnet 32 is connected in series on a branch of the parallel loop, the electromagnet 32 is oppositely attracted with the adjacent surface of a magnetic sliding block 37 after being electrified, the transverse groove 33 is internally provided with the magnetic sliding block 37, the magnetic sliding block 37 is in sliding connection with the inner wall of the transverse groove 33, the adjacent surface of the magnetic sliding block 37 and the electromagnet 32 is elastically connected through a telescopic spring 34, the right side of the magnetic sliding block 37 is fixedly connected with a limiting rod 36, a limiting groove 35 matched with the limiting rod 36 is arranged on the connecting rod 4, and one side of the limiting rod 36, which is far away from the magnetic sliding block 37, extends into the limiting groove 35.

The invention can be illustrated by the following operating modes: when the box body needs to be packaged, the box body is placed on the placing table 5, due to the fact that articles are placed in the box body, the placing table 5, the connecting rod 4 and the compression plate 16 can move downwards to compress the two compression springs 18, due to the fact that the limiting rod 36 is located in the limiting groove 35 in the initial state, the placing table 5 cannot rotate at the moment, the knob 6 is rotated clockwise, the rotating rod 23 rotates, due to the fact that the thread directions of the two thread layers on the rotating rod 23 are opposite, the two moving blocks 28 can move relatively, the two clamping blocks 31 are driven to move relatively, and the box body is clamped in the center position of the placing table 5;

at the moment, the driving motor 2 is started through the control panel, the driving motor 2 drives the threaded rod 13 to rotate clockwise, so that the sliding block 12 moves backwards, when the weight of the box body meets the factory standard, the two round-head abutting rods 7 on the left side and the right side of the placing table 5 cannot be in contact with the corresponding wedge-shaped blocks 9, the placing table 5 can move to the lower side of the box sealing structure 10 to perform box sealing treatment, when the box body is completely sealed, the driving motor 2 is started through the control panel, the driving motor 2 drives the threaded rod 13 to rotate anticlockwise, so that the sliding block 12 moves forwards to the original position, the knob 6 is rotated anticlockwise, the two moving blocks 28 drive the clamping blocks 31 to move towards the left side and the right side, the box body is not clamped any more, the box body is taken down at the moment, and the next box body to be sealed is placed on the placing table 5;

when the box body is light or heavy, the round-head abutting rod 7 can be in contact with the corresponding wedge-shaped block 9, so that the abutting block 25 is in contact with the corresponding conducting strip 26, the electromagnet 32 is electrified, the electromagnet 32 is oppositely attracted with the adjacent surface of the magnetic sliding block 37 after being electrified, the magnetic sliding block 37 is attracted to move leftwards, the magnetic sliding block 37 moves leftwards and can drive the limiting rod 36 to move leftwards, the limiting rod 36 is separated from the limiting groove 35, and the placing table 5 can deflect;

when the box body is light, when the placing table 5 moves backwards, the round-head abutting rod 7 on the right side is in contact with the wedge-shaped block 9 on the right side, the round-head abutting rod 7 on the right side moves leftwards, the abutting block 25 on the right side is driven to move leftwards, the abutting block 25 on the right side is in contact with the two corresponding conducting strips 26, and the first conducting spring 20 and the second conducting spring 30 on the left side are powered on;

after the first conductive spring 20 and the second conductive spring 30 on the left side are powered on, because each coil of the first conductive spring 20 and the second conductive spring 30 can generate a magnetic field, the directions of the magnetic fields generated by each adjacent coil are opposite, and each two adjacent coils can generate attractive force, the first conductive spring 20 and the second conductive spring 30 on the left side can be contracted, the second conductive spring 30 can be contracted to enable the clamping block 31 on the left side to move downwards into the corresponding vertical groove 29, at the moment, the left side of the box body has no limit stop, and the first conductive spring 20 on the left side can be contracted to enable the placing table 5 to incline to the left, so that the box body on the placing table 5 can slide down to the object receiving plate on the left side;

when the box body is heavy, when the placing table 5 moves backwards, the round-head supporting rod 7 on the left side is in contact with the wedge-shaped block 9 on the left side, the round-head supporting rod 7 on the left side moves rightwards, the supporting block 25 on the left side is driven to move rightwards, the supporting block 25 on the left side is in contact with the two corresponding conducting strips 26, and the first conducting spring 20 and the second conducting spring 30 on the right side are powered on;

after the first conductive spring 20 and the second conductive spring 30 on the right side are electrified, the first conductive spring 20 and the second conductive spring 30 on the right side are contracted, the clamping block 31 on the right side is moved downwards into the corresponding vertical groove 29 due to the contraction of the second conductive spring 30, at this time, the right side of the box body is not limited and blocked, the placing table 5 is inclined rightwards due to the contraction of the first conductive spring 20 on the right side, and the box body on the placing table 5 slides to the object receiving plate on the right side;

because the box that is located on the left thing board that connects is lighter box, and the box that is located on the right thing board that connects is heavier box, people need not to carry out screening again to the box when carrying out follow-up operation to people's labour has been reduced greatly.

Compared with the prior art, when placing this box and carrying out the joint sealing processing on placing platform 5, weight when the box accords with the standard, the box can move to joint sealing structure 10's below and carry out the joint sealing processing this moment, when the box is lighter or heavier, can lead to placing platform 5 left or right slope this moment, thereby lead to the box to fall to the board of accepting on both sides, need not to carry out artificial weighing before the joint sealing and handle, thereby staff's the amount of labour has significantly reduced, simultaneously because lighter box can fall to the left side, heavier box can fall to the right side, people in the follow-up processing to the box that is not conform to the standard, need not to weigh once more and can judge that the box is overweight or overweight, thereby staff's the amount of labour has further been reduced, and the production efficiency is improved.

Example 2

Referring to fig. 9-10, the present embodiment is different from embodiment 1 in that a conductive cavity 39 is provided in the placement stage 5, the conductive cavity 39 is located above the rotation slot 40, conductive blocks 19 are provided at the inner bottom and the inner top of the conductive cavity 39, mercury is filled in the conductive cavity 39, an audible and visual alarm 38 is installed at the left side of the bearing block 3, and when mercury contacts the two conductive blocks 19, the power supply 17, the conductive block 19 located above, the mercury, the conductive block 19 located below, and the audible and visual alarm 38 form a closed loop through wires.

In this embodiment, under the initial condition, mercury only can contact with the conducting block 19 that is located the below, when the box is heavier or lighter, place platform 5 this moment and can take place to deflect, when placing platform 5 and taking place to deflect, mercury can contact with two conducting blocks 19 this moment, when mercury contacts with two conducting blocks 19, can make audible-visual annunciator 38 circular telegram report to the police this moment, thereby remind people to handle heavier or lighter box, people can pass through control panel control driving motor 2 this moment, make driving motor 2 drive threaded rod 13 anticlockwise rotation, make sliding block 12 remove forward, place the next box of treating the encapsulation on placing platform 5 again.

Compared with the prior art, when the box is heavier or lighter, place platform 5 and can deflect right or left, the mercury in the conductive cavity 39 can contact with two conducting blocks 19 this moment, and audible and visual alarm 38 circular telegram, audible and visual alarm 38 circular telegram can sound and light and report to the police this moment to remind people to handle heavier or lighter box.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a case sealer with carton weight sieving mechanism, includes base (1), its characterized in that: a bearing block (3) is arranged above the base (1), and a compression cavity (15) is arranged in the bearing block (3);

the compression mechanism is arranged in the compression cavity (15) and comprises a compression plate (16) arranged in the compression cavity (15), the compression plate (16) is in sliding connection with the inner wall of the compression cavity (15), the lower end of the compression plate (16) is elastically connected with the inner bottom of the compression cavity (15) through two compression springs (18), the upper end of the compression plate (16) is fixedly connected with a connecting rod (4), the upper end of the connecting rod (4) extends to the outside, a placing table (5) is arranged at the upper end of the connecting rod (4), a rotating groove (40) is arranged at the lower end of the placing table (5), a cross rod is horizontally arranged in the rotating groove (40), two ends of the cross rod are fixedly connected with the inner walls of the front side and the rear side of the rotating groove (40), and the upper end of the connecting rod (4) extends into the rotating groove (40) and is rotatably connected with the cross rod;

a rectangular cavity (21) is arranged in the placing table (5), the rectangular cavity (21) is positioned above the rotating groove (40), a sliding mechanism is arranged in the rectangular cavity (21), the sliding mechanism comprises a rotating rod (23) horizontally arranged in the rectangular cavity (21), two ends of the rotating rod (23) are rotatably connected with the inner walls of the left side and the right side of the rectangular cavity (21), the right end of the rotating rod (23) extends to the outside and is fixedly connected with a knob (6), the side wall of the knob (6) is provided with a plurality of vertical grains along the circumferential direction, two thread layers are symmetrically arranged on the part of the outer wall of the rotating rod (23) which is positioned in the rectangular cavity (21), two thread layers on the rotating rod (23) are both in threaded connection with moving blocks (28), the two moving blocks (28) are both in sliding connection with the inner wall of the rectangular cavity (21), and a second strip-shaped opening (22) is arranged above the rectangular cavity (21);

vertical grooves (29) are formed in the two moving blocks (28), clamping mechanisms are arranged in the two vertical grooves (29), each clamping mechanism comprises a clamping block (31) arranged in each vertical groove (29), each clamping block (31) is connected with the inner wall of each vertical groove (29) in a sliding mode, the upper end of each clamping block (31) penetrates through the corresponding second strip-shaped opening (22) and extends to the outside, and the lower end of each clamping block (31) is elastically connected with the inner bottom of each vertical groove (29) through a second conductive spring (30);

rotate the left side of groove (40) and be equipped with transverse groove (33), one side that rotates groove (40) is kept away from in transverse groove (33) is equipped with electro-magnet (32), be equipped with magnetic slide block (37) in transverse groove (33), the inner wall sliding connection of magnetic slide block (37) and transverse groove (33), the adjacent surface of magnetic slide block (37) and electro-magnet (32) passes through expanding spring (34) elastic connection, the right side fixedly connected with gag lever post (36) of magnetic slide block (37), be equipped with on connecting rod (4) with gag lever post (36) matched with spacing groove (35), one side that magnetic slide block (37) was kept away from in gag lever post (36) extends to in gag lever post (35).

2. The carton sealing machine with the carton weight screening device according to claim 1, characterized in that: a sliding cavity (11) is arranged in the base (1), a threaded rod (13) is horizontally arranged in the sliding cavity (11), two ends of the threaded rod (13) are rotationally connected with the inner walls of the front side and the rear side of the sliding cavity (11), a driving motor (2) is arranged at the rear side of the sliding cavity (11), the rear end of the threaded rod (13) extends to the outside and is fixedly connected with the output end of the driving motor (2), the threaded rod (13) is connected with a sliding block (12) in a threaded manner, the sliding block (12) is connected with the inner wall of the sliding cavity (11) in a sliding manner, the upper end of the sliding cavity (11) is provided with a first strip-shaped opening (14), the upper end of the sliding block (12) is fixedly connected with a connecting block, the upper end of the connecting block penetrates through the first strip-shaped opening (14) and is fixedly connected with the lower end of the bearing block (3), and a power supply (17) is installed on the left side of the bearing block (3).

3. The carton sealing machine with the carton weight screening device according to claim 1, characterized in that: still include weight detection mechanism, weight detection mechanism sets up rectangular channel (24) placing the platform (5) left and right sides including the symmetry, two all be equipped with in rectangular channel (24) and support movable block (25), two support movable block (25) all with the inner wall sliding connection of rectangular channel (24) that corresponds, two support the adjacent surface of movable block (25) and the one side inner wall of keeping away from the notch that corresponds rectangular channel (24) all through reset spring (27) elastic connection, two support the back of the body of movable block (25) and all install button head support rod (7), two button head support rod (7) are kept away from the one end that corresponds support movable block (25) and are extended to the external world, two support movable block (25) and all have electric conductivity, two the interior bottom and the interior top of rectangular channel (24) all are equipped with and correspond and support movable block (25) matched with conducting strip (26), the lower extreme of placing platform (5) and the left and right sides inner wall of connecting rod (4) all through first electrically conductive spring (20) And (4) elastic connection.

4. A carton sealing machine with carton weight screening device according to claim 3, characterized in that: the upper end fixedly connected with two risers (8) of base (1), two riser (8) dislocation set is in the left and right sides of base (1) top, two one side that riser (8) are close to and place platform (5) all installs and carves shape piece (9) with corresponding button head support rod (7) matched with.

5. The carton sealing machine with the carton weight screening device according to claim 1, characterized in that: the thread directions of the two thread layers on the rotating rod (23) are opposite.

6. The carton sealing machine with the carton weight screening device according to claim 1, characterized in that: place and be equipped with electrically conductive chamber (39) in platform (5), electrically conductive chamber (39) are located the top of rotating groove (40), electrically conductive interior bottom and the interior top in chamber (39) all are equipped with electrically conductive piece (19), electrically conductive chamber (39) intussuseption is filled with mercury, audible-visual annunciator (38) are installed in the left side of carrier block (3).