CN112623382B - Shrinking machine - Google Patents

Abstract

The invention discloses a shrinking machine, wherein a heat shrinkage space is defined by an upper frame and a base, a conveying belt is arranged on the base, a heating mechanism and an air outlet mechanism are arranged in the base, an inlet and an outlet for materials are formed at two ends of the conveying belt by the upper frame, side air outlets are arranged at the left side and the right side of the conveying belt, and an air deflector capable of rotating to adjust the angle is arranged above the side air outlets; the top of heating mechanism is provided with first deep bead, and this first deep bead is arranged along material direction of delivery and is provided with a plurality of air outlets, and the below of first deep bead is provided with a second deep bead, and this second deep bead is arranged along material direction of delivery and is provided with a plurality of wind scoops that correspond with the air outlet, and the setting that the second deep bead can slide is driven by second actuating mechanism and is carried out along material direction of delivery's slip, the size of overlapping of adjustment wind scoops and air outlet. The invention automatically adjusts the air outlet angles at two sides and the air outlet quantity at the lower part through the control module, so that the films with different specifications achieve better thermal shrinkage effect.

Description

Shrinking machine

Technical Field

The invention relates to the field of product packaging, in particular to a shrinking machine.

Background

The heat shrink packaging machine is one of the more advanced packaging machines in the market at present. The product is wrapped by the shrink film, and the shrink film is tightly wrapped by the product through heating, so that the appearance of the product is fully displayed, the sales exhibition performance of the product is improved, and the appearance and the value feeling of the product are improved.

In a shrinking machine in the prior art, an air guide mechanism and a heating mechanism are arranged below a conveying space, a product sleeved with a film is conveyed by a conveying belt in the conveying space, and heat generated by the heating mechanism is blown upwards through the air guide mechanism to thermally shrink the film; the general machine only blows upwards, and does not limit the blowing direction of wind, when products with different specifications are handled, the situation that the upper part, the lower part and the periphery of a film are heated unevenly due to the fact that hot wind cannot be blown to the products and the side edges or the upper part of the film and the conveying space is large can occur, and the shrinkage quality of the film is affected; on the other hand, the size of the air blown upwards is not limited, and when the air is used for products with different specifications, the situation that the products and the films cannot be well in a proper heating environment due to too large or too small hot air can occur, the heating of the films is uneven or the shrinkage degree is different, and the shrinkage quality of the films is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a shrinking machine which ensures that hot air is well guided to the side and the upper part of a product of a film to be shrunk through a side structure, can adjust the size of air outlet at the lower part, enables the films of different product specifications to be uniformly heated and shrunk, and improves the overall shrink packaging quality.

The invention provides the following technical scheme: a shrinking machine comprises a base and an upper frame, wherein the upper frame is arranged on the base, a heat shrinking space is enclosed by the upper frame and the base, a conveying belt for conveying materials is arranged on the base, a heating mechanism for heating and an air outlet mechanism for blowing air to the heating mechanism are arranged in the base, material inlets and outlets are formed at two ends of the conveying belt by the upper frame, side air outlets for blowing side hot air out are formed in the left side and the right side of the conveying belt, an air deflector is arranged above the side air outlets, the air deflector is rotatably arranged on the side wall of the upper frame and is driven by a first driving mechanism to rotate to adjust the angle of the hot air flowing to the inner side; a first wind shield is arranged above the heating mechanism, a plurality of air outlets are arranged on the first wind shield in an arrangement mode along the material conveying direction, a second wind shield is arranged below the first wind shield, a plurality of air guide ports corresponding to the air outlets are arranged on the second wind shield in an arrangement mode along the material conveying direction, the second wind shield can be arranged in a sliding mode and driven by a second driving mechanism to slide along the material conveying direction, and the overlapping size of the air guide ports and the air outlets is adjusted; the wind deflector is debugged to a required angle to guide wind, the second wind deflector is debugged to a required position, and a wind guide opening and a wind outlet are debugged to a required opening degree.

As an improvement, the conveying belt comprises two chains wound at two sides to form a ring shape and a plurality of rolling shafts arranged between the two chains in sequence, the rolling shafts are rotatably arranged on the chains, and the rolling shafts form a conveying platform for placing materials when passing through the upper parts of the heating mechanism and the air outlet mechanism; the rolling shaft is arranged below the conveying platform in a swinging mode through the swinging shaft, and when the supporting piece swings upwards to be in contact with the lower portion of the rolling shaft, the rolling shaft is supported, so that the rolling shaft rolls on the supporting piece in the advancing process.

As an improvement, the supporting piece is arranged below the conveying platform in a strip shape, the supporting piece is arranged to be a left chain and a right chain which are close to the left side and the right side, and the swinging shaft is arranged to be two chains arranged at the front end and the rear end of the supporting piece.

As an improvement, the chain is provided with uniformly arranged second cross rods, the end part of the rolling shaft is sleeved on the second cross rods to rotate, an outer sleeve is arranged at the position, corresponding to the support piece, on the rolling shaft, and the outer sleeve is made of soft materials and is in contact fit with the support piece.

As an improvement, the lower part of the supporting piece is provided with an upper limiting block, the base is provided with a lower limiting block, the upper limiting block and the lower limiting block are provided with corresponding inclined planes, when the swinging shaft drives the supporting piece to swing upwards, the inclined planes corresponding to the upper limiting block and the lower limiting block are mutually abducted, and when the supporting piece swings to the position above the lower limiting block, the upper limiting block is supported on the lower limiting block to limit.

As an improvement, the air deflector and the first driving mechanism are driven by a connecting rod group, and the first driving mechanism and the connecting rod group are arranged at an outlet or an inlet of the material; the connecting rod group comprises a first transverse rod and two groups of longitudinal rods, the first transverse rod is arranged above and is linked with the first driving mechanism, the two groups of longitudinal rods are respectively arranged on the left side and the right side of the first transverse rod to be linked, and the lower parts of the longitudinal rods are linked with the rotating shaft of the air deflector.

As an improvement, the lower part of the longitudinal rod is provided with a thread section, a lifting rack is meshed with the thread section, a gear matched with the lifting rack is arranged at a rotating shaft of the air deflector, the lifting rack is driven to move up and down when the longitudinal rod rotates, the gear rotates synchronously, a sliding rod is arranged on the side edge of the longitudinal rod in a parallel mode, and the lifting rack can be sleeved on the sliding rod in a sliding mode.

As an improvement, the air outlet sets up the first wind-guiding eaves to the material export slope in the first deep bead department that is close to material entry one side, and the air outlet sets up the second wind-guiding eaves that upwards extends in the first deep bead department that is close to material export one side.

As an improvement, the second driving mechanism comprises a driving motor, a reduction gear set and a translation rack, the driving motor is arranged on the base, a motor shaft of the driving motor is connected with the reduction gear set, the output end of the reduction gear set is connected with the translation rack, and the translation rack is connected with the second air baffle to be driven horizontally.

As an improvement, the reduction gear sets are two groups which are sequentially connected and arranged to form a two-stage reduction structure; each group of reduction gear sets is provided with a big gear and a small gear, and the two groups of reduction gear sets are connected through a chain wheel and a chain.

The invention has the beneficial effects that: on one hand, after the air deflector is arranged, hot air blown out from the side edge can be guided to the position of a product at the inner side, and the hot air is directly and upwards flowed out from the lower part of the conveying belt in a matching manner, so that the temperatures of the lower part, the periphery and the upper part of a film on the product tend to be consistent, a uniform shrinkage effect is achieved, and the shrinkage quality is improved; the angle of the air deflector can be adjusted through the driving mechanism, the wind direction is adjusted, the height flow direction of wind can be controlled according to the sizes of products of different specifications, and the uniformity of heating of the thin film can be better guaranteed. On the other hand sets up the structure of debuggable air-out size with below air-out position to the realization is when dealing with the product of different specification sizes, and the amount of wind that blows out is controlled, makes the film of equidimension not reach better thermal contraction effect under suitable hot-blast amount of wind, avoids the film to be heated the condition emergence inhomogeneous or the shrink degree difference, thereby improves product packaging quality. Through the cooperation of the arrangement of the driving mechanism and the control module, a user can set the angle parameters of the air deflector needing to be adjusted and the position parameters of the second air deflector through input parameters, and then the adjustment of each mechanism is completed by the driving mechanism, so that the degree of automatic debugging is improved, the quick debugging under the condition of changing products with multiple specifications is adapted, the downtime is reduced, the difficulty of debugging of workers is reduced, the efficiency of production and packaging is improved, and the production benefit is ensured.

Drawings

FIG. 1 is a schematic perspective view of the shrinker of the present invention with a portion of the housing removed.

Fig. 2 is a schematic perspective view of a portion of the shrinker of the present invention.

Fig. 3 is an enlarged view at M in fig. 2.

Fig. 4 is an enlarged view of fig. 2 at N.

FIG. 5 is a schematic rear view of the shrinker of the present invention with the rear housing removed.

FIG. 6 is a perspective view of the shrinker of the present invention with the upper frame and a portion of the housing removed.

Fig. 7 is a schematic perspective view of the windshield of the present invention as viewed from below.

Fig. 8 is a schematic perspective view of a second driving mechanism according to the present invention.

Fig. 9 is a schematic perspective view of the second driving mechanism of the present invention with a portion of the housing removed.

Detailed Description

The following detailed description of specific embodiments of the invention refers to the accompanying drawings.

As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8 and 9, a specific embodiment of the shrinker of the present invention is shown. The embodiment comprises a base 1 and an upper frame 2, wherein the upper frame 2 is arranged on the base 1, a thermal contraction space 3 is enclosed by the upper frame 2 and the base 1, a conveying belt 11 for conveying materials is arranged on the base 1, a heating mechanism 12 for heating and an air outlet mechanism 13 for blowing air to the heating mechanism 12 are arranged in the base 1, material inlets and outlets are formed at two ends of the conveying belt 11 by the upper frame 2, side air outlets 10 for blowing side hot air out are arranged at the left side and the right side of the conveying belt 11, an air deflector 5 is arranged above the side air outlets 10, the air deflector 5 is rotatably arranged on the side wall of the upper frame 2, and the air deflector 5 is driven by a first driving mechanism 6 to rotate so as to adjust the angle of the hot air flowing to the inner side; a first wind shield 41 is arranged above the heating mechanism 12, a plurality of air outlets 42 are arranged on the first wind shield 41 in an arrangement manner along the material conveying direction, a second wind shield 43 is arranged below the first wind shield 41, a plurality of air guide openings 44 corresponding to the air outlets 42 are arranged on the second wind shield 43 in an arrangement manner along the material conveying direction, the second wind shield 43 can be arranged in a sliding manner and driven by a second driving mechanism 0 to slide along the material conveying direction, and the overlapping size of the air guide openings 44 and the air outlets 42 is adjusted; the wind guide plate device is characterized by further comprising a control module a, the first driving mechanism 6 and the second driving mechanism 0 are in signal connection with the control module a, the control module a is set to be used for debugging angle parameters of the wind guide plate 5 and position parameters of the second wind deflector 43, signals are fed back to the first driving mechanism 6 and the second driving mechanism 0 to control starting and stopping of the first driving mechanism 6 and the second driving mechanism 0, the wind guide plate 5 is debugged to a required angle for wind guide, the second wind deflector 43 is debugged to a required position, and the wind guide opening 44 and the wind outlet 42 are debugged to a required opening degree.

When the invention is used, the conveyer belt 11 arranged on the base 1 adopts a roller 112 arrangement mode, so that the hot air below the conveyer belt can flow upwards conveniently; the heating mechanism 12 is located at the inlet side of the shrinking machine, the air outlet mechanism 13 is located at the outlet side of the shrinking machine, the air outlet mechanism 13 sucks relatively cooled air from the outlet side of the thermal shrinkage space 3 through a turbine and then blows the air to the heating mechanism 12 at the inlet side, the heating mechanism 12 can be selected from multiple groups of heating pipes, the flowing air is heated and heated by the heating pipes, and through continuous operation of the air outlet mechanism 13, heated air flows from the lower side to the upper side of the conveying belt 11 to reach the positions where products and films in the thermal shrinkage space 3 are located on one hand, and flows out from the side air outlets 10 at two sides on the other hand.

The first wind shield 41 is arranged below, upward wind is blocked, and then orderly blow out through the air outlets 42 arranged along the material conveying direction, so that orderly and stable hot wind blowing to products and films is facilitated, and stable thermal contraction is performed. The second wind baffle 43 is arranged to be matched with the wind guide opening 44, so that the opening degree of the wind outlet 42 can be controlled, namely when the wind guide opening 44 completely faces the wind outlet 42, the maximum opening degree is achieved, and the area blown out by wind energy is maximum; the horizontal position of the second air baffle 43 can be adjusted when the second driving mechanism 0 is controlled to work, the overlapping area of the air guide opening 44 and the air outlet 42 is reduced, namely the second air baffle 43 blocks the air outlet 42, the area blown out by wind energy is reduced, the function of debugging the air volume is achieved, when the heat shrinkage of product films with different specifications and sizes is dealt with, the better heat shrinkage effect of the films under different specifications is realized through the size of the air outlet 42, the condition that the films are heated unevenly or the shrinkage degree is different is avoided, and the product packaging quality is improved.

The side is through setting up aviation baffle 5, and when hot-blast through, according to aviation baffle 5's angle, hot-blast inside direction flow flows, flows to the position at product and film place, and the film on the product can receive from below and the hot-blast even being heated in side like this, makes the peripheral temperature of product and film keep unanimous, makes whole film be heated the shrink even, and the shrink effect is better at last, avoids original gas to flow wantonly after, product and film exist the not even phenomenon of shrink that the difference in temperature appears from top to bottom. In actual conditions, because of the difference of product specification, some high products, the difference is more likely to exist to the difference in its upper and lower difference in temperature, set up aviation baffle 5 to drive adjustable mode through first actuating mechanism 6, the staff of being convenient for adjusts aviation baffle 5's angle according to actual conditions, the higher product of reply can be adjusted to the air-out and more be partial to the top, make the hot-blast top surface that smoothly flows to product and film, avoid the appearance of difference in temperature from top to bottom, aviation baffle 5 accessible pivot is rotatable to be set up in the lateral wall of upper ledge 2, drive the pivot rotation when first actuating mechanism 6 starts and can adjust aviation baffle 5's angle.

As optimization, the shrinker can be further provided with a control module a, and a worker can input angle information to be adjusted by the air deflector 5 and translation information to be adjusted by the second air deflector 43 through the control module a to control the first driving mechanism 6 and the second driving mechanism 0 to complete debugging; furthermore, the angle information of the air deflector 5 and the position information of the second air deflector 43 can correspond to the product information, and the required angle of the air deflector 5 can be adjusted by inputting the product specification information, and the opening degree of the air guiding opening 44 and the air outlet 42 can be adjusted by corresponding to the product specification information, so that the adjustment of workers according to the product specification can be facilitated. Overall, the down time is reduced, the debugging difficulty of workers is reduced, the efficiency of production and packaging is improved, and the production benefit is ensured.

As an improved embodiment, the conveyer belt 11 includes two chains 111 wound at two sides to form a ring shape and a plurality of rollers 112 sequentially arranged between the two chains 111, the rollers 112 are rotatably arranged on the chains 111, and the rollers 112 form a conveying platform for placing materials when passing over the heating mechanism 12 and the air outlet mechanism 13; the device also comprises a support member 14, wherein the support member 14 is arranged below the conveying platform in a swinging mode through a swinging shaft 15, and when the support member 14 swings upwards to be in contact with the lower portion of the roller 112, the roller 112 is supported, so that the roller 112 rolls on the support member 14 in the traveling process.

In the prior art, the roller 112 does not roll, and the film pressed by the product and the roller 112 does not contact with the heat as well as the periphery, which may cause the film at the roller 112 to be heated unevenly, and affect the shrinkage quality of the film. As shown in fig. 1, 5, and 6, the conveyer belt 11 disposed at the base 1 bypasses a plurality of rotating shafts to form an annular shape, the conveyer belt 11 is driven by the motor to operate, the heating mechanism 12 is located at the inlet side of the shrinker, the air outlet mechanism 13 is located at the outlet side of the shrinker, the conveyer belt 11 includes a chain 111 and rollers 112, the rollers 112 form a conveying platform for placing materials above the heating mechanism 12 and the air outlet mechanism 13, and the chain 111 is driven by the motor to operate. Originally, be difficult for receiving thermally equivalent's position, the film position that is pushed down by product and roller bearing 112 cooperation, when carrying, adjust support piece 14 to roller bearing 112 lower part contact support, in roller bearing 112 is driven the in-process of marcing by chain 111, roller bearing 112 can roll because of the contact friction with support piece 14 and advance, thereby make product and film on it carry out rolling marcing, the film part that is suppressed changes constantly, make the film of lower part can be heated evenly, the inhomogeneous condition of being heated has been avoided appearing, realize better film thermal contraction effect, improve product packaging quality. When not in use, the supporting element 14 can swing downwards through the swing shaft 15 to be separated from the rolling shaft 112, so that the whole maintenance of the machine is convenient.

As a modified embodiment, the supporting member 14 is provided in a strip shape below the conveying platform, the supporting member 14 is provided adjacent to the left and right chains 111, and the swing shafts 15 are provided at the front and rear ends of the supporting member 14.

As shown in fig. 1, 5 and 6, the strip-shaped length of the supporting member 14 covers the whole conveying platform as much as possible, so that the rollers 112 at the whole conveying platform can roll when the conveying platform advances, the lower film is uniformly heated, and the whole conveying process is well heated and shrunk; under the condition that support piece 14 is longer, rely on two swing shafts 15 that both ends set up respectively around, realize the good drive and support of support piece 14, keep support piece 14 overall structure's stability, two swing shafts 15 are located the both sides of heating mechanism 12 and air-out mechanism 13, carry out reasonable spatial arrangement. As shown in fig. 1 and 6, the supporting member 14 on the far side and the supporting member 14 on the near side are not visible in the drawing, and are symmetrically arranged on two sides, so that two sides of the roller 112 can be stably supported, and the roller 112 can roll uniformly under stress when being matched, so that the roller 112 can better drive the product to be conveyed forwards and the film to be uniformly heated when rolling.

As an improved embodiment, the chain 111 is provided with uniformly arranged second cross bars 113, the end of the roller 112 is sleeved on the second cross bars 113 for rotation, an outer sleeve 114 is provided on the roller 112 at a position corresponding to the supporting member 14, and the outer sleeve 114 is made of a soft material and is in contact fit with the supporting member 14.

As shown in fig. 6, by the arrangement of the second cross bar 113, the end of the roller 112 is provided with a hole structure to be sleeved on the second cross bar 113, so that the second cross bar 113 can rotate well; an outer sleeve 114 made of soft material is further provided, and is sleeved on the rolling shaft 112 for contacting and matching with the supporting member 14, so as to reduce the matching abrasion between the structures, and the outer sleeve 114 also avoids the hard contact between the structures, so that the rolling of the rolling shaft 112 is more soft and stable, the accuracy of the supporting position of the supporting member 14 below can be reduced, and the manufacturing and assembling difficulty between the structures can be reduced.

As a modified specific embodiment, the lower part of the supporting member 14 is provided with an upper limit block 141, the base 1 is provided with a lower limit block 16, the upper limit block 141 and the lower limit block 16 have corresponding inclined surfaces 161, when the swinging shaft 15 drives the supporting member 14 to swing upwards, the inclined surfaces 161 corresponding to the upper limit block 141 and the lower limit block 16 make mutual abdications, and when the supporting member 14 swings to make the upper limit block 141 above the lower limit block 16, the upper limit block 141 is supported on the lower limit block 16 to make limit.

As shown in fig. 6, by the arrangement of the upper limiting block 141 and the lower limiting block 16, when the supporting member 14 swings upwards to a certain position, the upper limiting block 141 can be supported on the lower limiting block 16, so as to achieve a good supporting effect, and the structure of the supporting member 14 is stable throughout the length by matching with the swing shaft 15 and the upper limiting block 141 and the lower limiting block 16 in the middle, and a plurality of groups of matching structures of the upper limiting block 141 and the lower limiting block 16 can be properly arranged in the length direction of the supporting member 14, so as to improve the supporting stability. When the supporting member 14 is driven to swing by the swing shaft 15, the upper limiting block 141 and the lower limiting block 16 are structurally avoided by the opposite inclined surface 161, and the two blocks do not interfere with each other, and when the supporting member 14 swings to the upper side, the upper limiting block 141 can be directly positioned above the lower limiting block 16, and the upper limiting block 141 can be supported on the lower limiting block 16 in an abutting mode along with the continuous swinging, so that the supporting function is realized. Carry out reverse swing on overall structure and can break away from, reach good result of use, it is fixed to need not unnecessary debugging, facilitates the use.

As a modified embodiment, the swing shaft 15 extends out of the side edge of the base 1 to form an operating head 17, and the operating head 17 is provided with a jack 18 for inserting a handle so as to drive the swing shaft 15 to rotate.

As shown in FIG. 6, by extending an operating head 17 to the outside of the side of the base 1, the operator can insert a handle into the insertion hole 18 to drive the swing shaft 15 to swing, and the handle is removed after debugging is completed, so that misoperation can be avoided.

As a modified embodiment, the inlet end of the support member 14 has a chamfer 142 that guides the roller 112 into the upper surface for support. The exit end of support member 14 has a chamfer 142 that guides roller 112 away from the upper surface.

As shown in fig. 6, the connection of the chain 111 has a certain flexibility, which may have a certain suspension due to gravity, and the front and rear ends of the supporting member 14 may well guide the roller 112 to be moved in or out of the supporting state by the structure of providing the chamfers 142, respectively, so that the roller 112 and the supporting member 14 may roll more smoothly in contact with each other, and the wear of parts due to jamming or impact may be avoided.

As an improved specific embodiment, the air deflector 5 and the first driving mechanism 6 are driven by the connecting rod group 7, and the first driving mechanism 6 and the connecting rod group 7 are arranged at the outlet or the inlet of the material; the linkage 7 comprises a first cross rod 71 and two groups of longitudinal rods 72, the first cross rod 71 is arranged above and linked with the first driving mechanism 6, the two groups of longitudinal rods 72 are respectively arranged at the left side and the right side of the first cross rod 71 and linked, and the lower parts of the longitudinal rods 72 are linked with the rotating shaft of the air deflector 5.

As shown in fig. 1 and 2, the first driving mechanism 6 and the linkage 7 may preferably be disposed at the inlet of the material, which is close to the heating mechanism 12, i.e. close to the wind outlet position, so as to be connected to the rotating shaft of the wind deflector 5; the upper part and two sides of the inlet are provided with good arrangement spaces, the first driving mechanism 6 and the connecting rod group 7 can be arranged at the positions, the structure is reasonable, the first driving mechanism and the connecting rod group are positioned outside the thermal contraction space 3, the first driving mechanism and the connecting rod group do not need to bear overhigh temperature, the service life of the mechanism is favorably ensured, and as shown in fig. 5, the shells at the positions of the first driving mechanism 6 and the connecting rod group 7 can be set to be porous structures, and the heat dissipation is favorably realized; the connecting rod group 7 extends to two sides, and the first driving mechanism 6 can drive the air deflectors 5 on two sides to be synchronously adjusted, so that cost control is facilitated, and synchronization and unification of adjustment on two sides are ensured. First actuating mechanism 6 drives the first horizontal pole 71 of intermediate position at first, then drive the vertical pole 72 of both sides through first horizontal pole 71, make holistic drive atress stable, first horizontal pole 71 and vertical pole 72 accessible bearing set up on upper bracket 2, utilize the structure of the multi-rod body with the both sides aviation baffle 5 department of the power direction below of the first actuating mechanism 6 in top, rely on the peripheral framework of entrance to arrange good application structure space, simple structure is with lower costs, also be convenient for maintain.

As an improved specific embodiment, the lower portion of the longitudinal rod 72 has a threaded section, a lifting rack 73 is engaged with the threaded section, a gear 74 matched with the lifting rack 73 is arranged at the rotating shaft of the air deflector 5, when the longitudinal rod 72 rotates, the lifting rack 73 is driven to move up and down, the gear 74 is enabled to rotate synchronously, a sliding rod 75 is arranged in parallel on the side edge of the longitudinal rod 72, and the lifting rack 73 is slidably sleeved on the sliding rod 75.

As shown in fig. 2 and 3, the above is a specific transmission structure of the vertical rod 72 and the rotating shaft of the air deflector 5, by the engagement of the lower threaded section of the vertical rod 72 and the lifting rack 73, when the vertical rod 72 rotates, the lifting rack 73 can be driven to lift, the lifting rack 73 can drive the gear 74 to rotate, and further the rotating shaft, i.e. the air deflector 5, rotates, the transmission of the structure is stable, the possibility of slipping does not exist, the debugging accuracy can be better ensured, and the adjustment of the multi-shaft transmission direction is well realized; the sliding rod 75 is provided to limit and improve the stability of the up-and-down movement of the lifting rack 73, and the lifting rack 73 can be well arranged in cooperation with the vertical rod 72.

As a modified embodiment, the upper and lower sides of the lifting rack 73 are provided with microswitches 9 for detecting the upper and lower movable limit positions of the lifting rack 73.

As shown in fig. 2 and 3, for avoiding the structure that causes when the lifting rack 73 moves from top to bottom excessively collides with, too big specification numerical value has been input during the debugging, or the condition that first actuating mechanism 6 breaks down and does not in time stop, micro-gap switch 9 can be further set up, when lifting rack 73 up-and-down motion reaches extreme position, micro-gap switch 9 can be triggered, but micro-gap switch 9 feedback signal gives control module a, go to stop first actuating mechanism 6 by control module a, can effectually avoid the damage that the structure collided with and brings, the time and the cost of extra shut down maintenance cost have been avoided.

As a modified embodiment, two ends of the first transverse rod 71 are respectively meshed with two groups of longitudinal rods 72 through bevel gears 76 for transmission.

As shown in fig. 2 and 4, the above specific transmission structure of the first transverse rod 71 and the longitudinal rod 72 realizes adjustment of the multi-axis transmission direction by means of good engagement of the bevel gears 76 arranged at the end parts of the first transverse rod 71 and the longitudinal rod 72, and the gear engagement transmission is stable without possibility of slipping, so that the adjustment accuracy can be better ensured.

As a modified embodiment, the first cross bar 71 and the first driving mechanism 6 are connected and driven by a sprocket and a chain.

As shown in fig. 2 and 4, the chain and the chain wheel on the first driving mechanism 6 are not shown, the first driving mechanism 6 can be specifically configured as a motor, the chain wheel is arranged on a motor shaft of the motor, the chain wheel is arranged on the first cross rod 71, the two groups of chain wheels are connected and driven by the chain, the matching of the chain wheel and the chain is stable, the possibility of slipping does not exist, and the debugging accuracy can be better ensured.

As a modified specific embodiment, the first cross bar 71 is further provided with a code wheel 8, a plurality of detection notches 81 are uniformly arranged in the circumferential direction of the code wheel 8, a detection sensor 82 is arranged on the outer circumference of the code wheel 8, the detection sensor 82 is used for detecting the rotation condition of the code wheel 8, and the detection sensor 82 senses and determines the rotation number and the angle of the code wheel 8 when passing through the detection notches 81.

As shown in fig. 2 and 4, the arranged encoder wheel 8 can match the rotation angle of the first cross bar 71 with the rotation angle of the encoder wheel, so that the rotation angles of the vertical bar 72 and the air deflectors 5 can be known, and the rotation angles of the air deflectors 5 on two sides can be accurately monitored; set up even detection breach 81 on the encoder wheel 8, divide with 360 degrees and detect the quantity of breach 81, it can detect once to obtain corresponding angle by detection sensor 82, make this angle of every rotation of encoder wheel 8, detection sensor 82 can be once corresponding with detection breach 81, thereby make the rotation angle or the number of turns of feedback encoder wheel 8 that detection sensor 82 can be accurate, or rely on the rotation angle or the number of turns of good control encoder wheel 8 of detection sensor 82 cooperation control module a, make first horizontal pole 71, vertical pole 72, after aviation baffle 5 rotated accurate angle or the number of turns according to the parameter that control module a needs to debug, the signal feedback of detection sensor 82 or encoder wheel 8 to control module a, control module a can be accurate stop first actuating mechanism 6, realize the accuracy and stability of debugging, the precision is higher.

As a modified specific embodiment, the air outlet 42 is provided with a first air guiding eave 411 inclined toward the material outlet at the first air baffle 41 near the material inlet side, and the air outlet 42 is provided with a second air guiding eave 412 extending upward at the first air baffle 41 near the material outlet side.

As shown in fig. 6, the hot air flowing out of the air outlet 42 flows to the outlet side of the material transportation under the blocking and guiding of the first air guiding eaves 411, and the product is driven by the conveying belt 11 to continuously move to the outlet side, so that the guiding air can keep the hot air and the product moving at a consistent speed and direction, which is more beneficial to ensuring the temperature stability of the product and the film and ensuring a good heat shrinkage effect. The air flowing toward the outlet side is sucked again and circulated as it reaches the air outlet mechanism 13. When being guided to the outlet side by first wind-guiding eaves 411 and flowing, hot-blast can be carried out horizontal flow direction's the stopping by second wind-guiding eaves 412 at the outlet side to make hot-blast can be better toward the direction flow in the slant, product and film and the thermal contraction space 3 of flow direction top that can be more abundant, avoid hot-blast too much horizontal flow in the space between first deep bead 41 and conveyer belt 11, cause thermal loss.

As a modified specific embodiment, the second driving mechanism 0 includes a driving motor 01, a reduction gear set 02 and a translation rack 03, the driving motor 01 is disposed on the base 1, a motor shaft of the driving motor is connected with the reduction gear set 02, an output end of the reduction gear set 02 is connected with the translation rack 03, and the translation rack 03 is connected with the second wind deflector 43 for horizontal driving.

As shown in fig. 6, 7, 8, and 9, the horizontal position of the second air deflector 43 can be well adjusted by means of flexible start and stop and forward and reverse rotation of the driving motor 01, generally, the rotating speed of the driving motor 01 is higher, and the distance of the second air deflector 43 is more finely moved by matching with the reduction gear set 02, which is beneficial to better control the opening degree of the air guiding opening 44 and the air outlet 42; the translation rack 03 is used for converting the rotation state of the reduction gear set 02 to the translation state of the second wind deflector 43, the transmission is stable in structure, the slipping condition does not exist, and the accuracy of transmission debugging can be better ensured.

As an improved specific implementation manner, the reduction gear sets 02 are two groups which are sequentially connected and arranged to form a two-stage reduction structure; each group of reduction gear sets 02 is provided with a large gear and a small gear, and the two groups of reduction gear sets 02 are connected through a chain wheel and a chain.

As shown in fig. 8 and 9, in order to move the second wind deflector 43 with a finer distance, a larger reduction ratio is required, and when a first-stage reduction is adopted, the size of the gear needs to be designed to be larger, and a larger space needs to be occupied; in this embodiment, a two-stage reduction structure is adopted, and the volume of the two groups of reduction gear sets 02 can be smaller, so that the reduction of the volume in the structure is facilitated, and the second driving mechanism 0 is conveniently arranged in the base 1 as a whole without interfering with other components. Each group of reduction gear sets 02 form a reduction structure by adopting two gears which are most simplified, and the arrangement occupies a small space; then connect two sets of reduction gear sets 02 through sprocket and chain, structurally the transmission is stable, does not have the condition of skidding, the accuracy of assurance transmission debugging that can be better.

As a modified specific embodiment, a proximity switch 04 for detecting the forward and backward movement limit position of the translation rack 03 is arranged at the side edge of the rear end of the translation rack 03.

As shown in fig. 8 and 9, for avoiding the structure that causes when the translation activity of translation rack 03 is excessive to collide with, too big specification numerical value has been input during the debugging, or driving motor 01 breaks down and does not in time stop's the condition, can further set up proximity switch 04, when translation rack 03 seesaw to extreme position, can be detected by proximity switch 04, proximity switch 04 can feed back signal and give control module a, go to stop driving motor 01 by control module a, can effectually avoid the damage that the structure collided with and brought, the time and the cost of extra shutdown maintenance cost have been avoided.

As a modified embodiment, the air guiding opening 44 and the air outlet 42 are narrow slits extending in the width direction of the conveyor belt 11.

As shown in fig. 6 and 7, the air guiding opening 44 and the air outlet 42 in this embodiment cover the width direction of the conveying belt 11, so that hot air can flow out in order in width, a good position for placing products and films can be covered, and a good flow can be achieved to the heat shrinkage space 3; the film feeding device is arranged into a plurality of groups along the material conveying direction, so that the space on the inlet side is well and sufficiently covered, and the stability of products and films during passing is ensured.

As an improved specific implementation manner, a synchronous rotating encoding wheel 8 is further arranged at the driving motor 01 or the reduction gear group 02, a plurality of detection notches 81 are uniformly arranged in the circumferential direction of the encoding wheel 8, a detection sensor 82 is arranged on the periphery of the encoding wheel 8, the detection sensor 82 is used for detecting the rotation condition of the encoding wheel 8, and the detection sensor 82 senses and determines the rotation number and the rotation angle of the encoding wheel 8 when passing through the detection notches 81.

As shown in fig. 7, 8 and 9, the arranged encoding wheel 8 can match the rotation angle of the motor shaft of the driving motor 01 or the rotation angle of the gear in the reduction gear set 02 by the rotation angle thereof, so as to know the translation distance between the translation rack 03 and the second air baffle 43, and accurately monitor the opening degree of the air guiding opening 44 and the air outlet opening 42; set up even detection breach 81 on the encoding wheel 8, divide with 360 degrees the quantity that detects breach 81, it can detect once by detection sensor 82 to obtain corresponding angle, make this angle of every rotation of encoding wheel 8, detection sensor 82 can be once corresponding with detection breach 81, thereby make the rotation angle or the number of turns of feedback encoding wheel 8 that detection sensor 82 can be accurate, or rely on the rotation angle or the number of turns of the good control encoding wheel 8 of detection sensor 82 cooperation control module a, after making second air baffle 43 remove accurate distance according to the parameter of the required debugging of control module a, the signal feedback of detection sensor 82 or encoding wheel 8 to control module a, control module a can be accurate stop driving motor 01, realize the accuracy stability of debugging, the precision is higher.

As a modified embodiment, the control module a may preferably be a programmable controller having a touch screen or keys for external input.

The programmable controller is used as a mature technology, so that a producer can conveniently preset a corresponding program, a worker can input or call various specifications of a product, the selection of the worker can be stored, parameters required to be debugged can be directly selected, and good automatic start-stop and control can be realized by matching with various mechanical mechanisms. The touch screen or the keys are arranged for facilitating the input and selection of the parameters, so that the function is more favorably realized.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (4)

1. The utility model provides a shrinker, includes base (1) and upper ledge (2), upper ledge (2) sets up on base (1), upper ledge (2) and base (1) enclose into heat shrink space (3), set up conveyer belt (11) that are used for carrying the material on base (1), set up heating mechanism (12) that are used for the heating in base (1) and be used for air-out mechanism (13) of blowing to heating mechanism (12), upper ledge (2) forms the access & exit of material at the both ends of conveyer belt (11), its characterized in that:

the left side and the right side of the conveying belt (11) are provided with side air outlets (10) for blowing side hot air out, an air deflector (5) is arranged above the side air outlets (10), the air deflector (5) is rotatably arranged on the side wall of the upper frame (2), and the air deflector (5) is driven by a first driving mechanism (6) to rotate to adjust the angle of the hot air flowing inwards;

a first wind shield (41) is arranged above the heating mechanism (12), a plurality of air outlets (42) are arranged on the first wind shield (41) in an arrangement manner along the material conveying direction, a second wind shield (43) is arranged below the first wind shield (41), a plurality of air guide openings (44) corresponding to the air outlets (42) are arranged on the second wind shield (43) in an arrangement manner along the material conveying direction, the second wind shield (43) can be arranged in a sliding manner and is driven by a second driving mechanism (0) to slide along the material conveying direction, and the overlapping size of the air guide openings (44) and the air outlets (42) is adjusted;

the air guide device is characterized by further comprising a control module (a), the first driving mechanism (6) and the second driving mechanism (0) are in signal connection with the control module (a), the control module (a) is set to be used for debugging angle parameters of the air guide plate (5) and position parameters of the second air baffle plate (43), signals are fed back to the first driving mechanism (6) and the second driving mechanism (0) to control starting and stopping of the first driving mechanism and the second driving mechanism, the air guide plate (5) is debugged to a required angle to guide air, the second air baffle plate (43) is debugged to a required position, and the air guide opening (44) and the air outlet (42) are debugged to a required opening degree;

the conveying belt (11) comprises two chains (111) which are wound at two sides to form a ring shape and a plurality of rollers (112) which are sequentially arranged between the two chains (111), the rollers (112) are rotatably arranged on the chains (111), and the rollers (112) form a conveying platform for placing materials when passing through the upper parts of the heating mechanism (12) and the air outlet mechanism (13); the conveying device is characterized by further comprising a supporting piece (14), wherein the supporting piece (14) is arranged below the conveying platform in a swinging mode through a swinging shaft (15), and when the supporting piece (14) swings upwards to be in contact with the lower portion of the rolling shaft (112), the rolling shaft (112) is supported, so that the rolling shaft (112) rolls on the supporting piece (14) in the traveling process;

the air deflector (5) and the first driving mechanism (6) are driven by the connecting rod set (7), and the first driving mechanism (6) and the connecting rod set (7) are arranged at an outlet or an inlet of a material; the connecting rod group (7) comprises a first transverse rod (71) and two groups of longitudinal rods (72), the first transverse rod (71) is arranged above and is linked with the first driving mechanism (6), the two groups of longitudinal rods (72) are respectively arranged on the left side and the right side of the first transverse rod (71) to be linked, and the lower parts of the longitudinal rods (72) are linked with a rotating shaft of the air deflector (5);

the lower part of the longitudinal rod (72) is provided with a threaded section, a lifting rack (73) is meshed with the threaded section, a gear (74) matched with the lifting rack (73) is arranged at the rotating shaft of the air deflector (5), the lifting rack (73) is driven to move up and down when the longitudinal rod (72) rotates, the gear (74) is enabled to rotate synchronously, a sliding rod (75) is arranged on the side edge of the longitudinal rod (72) in parallel, and the lifting rack (73) is sleeved on the sliding rod (75) in a sliding manner;

the second driving mechanism (0) comprises a driving motor (01), a reduction gear set (02) and a translation rack (03), the driving motor (01) is arranged on the base (1), a motor shaft of the driving motor is connected with the reduction gear set (02), the output end of the reduction gear set (02) is connected with the translation rack (03), and the translation rack (03) is connected with the second wind shield (43) to be driven horizontally;

the two groups of reduction gear sets (02) are sequentially connected and arranged to form a two-stage reduction structure; each group of reduction gear sets (02) is provided with a big gear and a small gear, and the two groups of reduction gear sets (02) are connected through a chain wheel and a chain;

the lower part of support piece (14) is provided with spacing piece (141) on, be provided with spacing piece (16) down on base (1), go up spacing piece (141) and spacing piece (16) down and have corresponding inclined plane (161), when pendulum shaft (15) drive support piece (14) and carry out the upswing, go up inclined plane (161) that spacing piece (141) and spacing piece (16) correspond down and dodge each other, when support piece (14) swing to last spacing piece (141) be located spacing piece (16) top down, make and go up spacing piece (141) and support and carry out spacing on spacing piece (16) down.

2. A shrinker as claimed in claim 1, characterized in that: the supporting piece (14) is arranged below the conveying platform in a strip shape, the supporting piece (14) is arranged to be close to the left chain and the right chain (111) on the left side and the right side, and the swinging shaft (15) is arranged to be two at the front end and the rear end of the supporting piece (14).

3. A shrinker as claimed in claim 1, characterized in that: the chain (111) is provided with second cross rods (113) which are uniformly arranged, the end part of the rolling shaft (112) is sleeved on the second cross rods (113) to rotate, an outer sleeve (114) is arranged on the position, corresponding to the supporting piece (14), of the rolling shaft (112), and the outer sleeve (114) is made of soft materials and is in contact fit with the supporting piece (14).

4. A shrinker according to any one of claims 1-3, characterized in that: the air outlet (42) sets up first wind guide eaves (411) to the material export slope in first deep bead (41) that is close to material entry one side, air outlet (42) set up the second wind guide eaves (412) that upwards extend in first deep bead (41) that is close to material export one side.

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