Steam shrinkage furnace for automatic labeling machine

Abstract

The utility model discloses a steam shrinkage furnace for an automatic labeling machine, which comprises a steam shrinkage furnace body arranged at a discharge port of the automatic labeling machine, and the steam shrinkage furnace body comprises a belt conveyor. The belt conveyor comprises a U-shaped support, two driving rollers rotationally installed between the inner wall of the front side and the inner wall of the rear side of the U-shaped support, a conveying belt connected to the two driving rollers in a transmission mode and a conveying motor fixedly installed on the front side of the U-shaped support. According to the utility model, a series of structures are arranged, so that a product can automatically move up and down and rotationally spray steam around the outer side of the product after being conveyed to a thermal shrinkage position, and a thermal shrinkage label sleeve on the outer side of the product can be integrally and uniformly heated and thermally shrunk in a manner of moving up and down and rotationally spraying high-temperature steam around the product; the phenomenon that a certain side is excessively thermally shrunk and other sides are not sufficiently thermally shrunk is avoided, the overall thermal shrinkage uniformity is improved, steam spraying and continuous conveying work can be automatically stopped after thermal shrinkage is completed, and automatic and uniform thermal shrinkage work is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam shrinking furnaces, in particular to a steam shrinking furnace used for an automatic sleeve labeling machine. Background Art

[0002] After the automatic labeling machine labels the product, it needs to shrink the shrink film used for packaging to complete the product packaging. At present, most of the shrinking equipment on the market is mainly electric hot air shrinking machines. Due to the problems of slow heat transfer speed and uneven heat transfer, these equipment will cause wrinkles when shrinking the shrink film and uneven color of printing ink, which seriously affects the appearance of the product. Steam is gradually used as a heat transfer medium in shrinking equipment due to its fast heat transfer speed and uniform heat transfer.

[0003] After searching, publication number CN209258525U discloses a steam shrinking furnace for an automatic labeling machine, including a furnace body, a conveying platform at the bottom of the furnace body, and the furnace body includes a preheating chamber, a steam shrinking chamber and a precooling chamber in sequence along the conveying direction of the conveying platform. A steam nozzle group extending along the conveying direction of the conveying platform is provided on the side wall of the steam shrinking chamber, a heat dissipation chamber is provided above the steam shrinking chamber, a steam exhaust channel is provided on the top of the heat dissipation chamber, and openings connected to the heat dissipation chamber are provided on the tops of the inlet preheating chamber and the outlet precooling chamber; in summary, it makes the shrink film heat more reasonably, the surface of the shrink film after shrinkage is more uniform and smooth, and the packaging quality is improved.

[0004] The above technology discloses a steam shrinking furnace for an automatic sleeve labeling machine. By installing a steam nozzle group on the side wall of the steam shrinking chamber, the product with the heat shrink sleeve can be heated and shrunk when it is conveyed to the right. However, it still has the following shortcomings: 1. The steam nozzle group is only located at the rear part. Since the heat of the steam just ejected is higher than the heat after the steam flows, the rear part of the heat shrink sleeve on the product is shrunk earlier than the other sides. After the overall heat shrinkage is completed, the rear part is prone to excessive heat shrinkage. The overall outer side heat shrinkage uniformity is still not ideal and needs to be improved. In view of this, we propose a steam shrinking furnace for an automatic sleeve labeling machine to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a steam shrinking furnace for an automatic sleeve labeling machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steam shrinking furnace for an automatic sleeve labeling machine, comprising a steam shrinking furnace body arranged at the discharge port of the automatic sleeve labeling machine, the steam shrinking furnace body comprising a belt conveyor, the belt conveyor comprising a U-shaped bracket, two driving rollers rotatably mounted between the front and rear inner walls of the U-shaped bracket, a conveyor belt transmission-connected to the two driving rollers, and a conveying motor fixedly mounted on the front side of the U-shaped bracket, the rear end of the output shaft of the conveying motor is fixedly connected to the front end of the driving roller on the left side, and the conveyor belt of the belt conveyor is used to convey the products after the automatic sleeve labeling machine is sleeved with heat shrinkable sleeves to the right;

[0007] A furnace cover with an opening at the bottom is fixedly connected to the top of the U-shaped bracket, rectangular through-holes with openings at the bottom are provided on the inner walls on both sides of the furnace cover, and the conveyor belt is located in the two rectangular through-holes. A PLC controller is fixedly installed on the top of the furnace cover, and an electric telescopic rod is embedded and fixed on the top inner wall of the furnace cover. An industrial recognition camera is fixedly connected to the top inner wall of the furnace cover, and the industrial recognition camera, the conveying motor and the electric telescopic rod are all electrically connected to the PLC controller. After the industrial recognition camera recognizes that the product is conveyed to its lower part, a signal to stop the movement and start the heat shrinking is transmitted to the PLC controller;

[0008] The extended end of the electric telescopic rod is fixedly connected to a round box with an opening at the bottom, and a round through hole located below the industrial identification camera is opened on the top inner wall of the round box. A rotating blowing heating component connected to the inside of the round box is sealed and installed in the round box. A driving motor whose output shaft is fixedly connected to the rotating blowing heating component is fixedly installed on the right side of the round box. The driving motor is electrically connected to the PLC controller. After receiving the stop movement and start heat shrinking signals, the PLC controller controls the shutting down of the conveying motor, the reciprocating forward and reverse start of the electric telescopic rod, and the start of the driving motor. The rotating blowing heating component is used to move up and down and rotate when the electric telescopic rod and the driving motor are started, so as to realize rotating heating around the outer side of the product for uniform heat shrinking.

[0009] A steam supply component is connected and fixed between the top of the furnace cover and the left side of the top of the round box. The steam supply component is electrically connected to the PLC controller. The steam supply component is used to supply high-temperature steam into the round box.

[0010] Preferably, the rotary blowing heating component includes an annular tube which is sealed and rotated in a circular box, the inner sealing rotating sleeve of the annular tube is provided with an inner stop sleeve, the inner stop sleeve is fixedly connected to the top inner wall of the circular box and is connected to the circular through hole, ventilation holes connected to the inner side of the circular box are opened on both sides of the top of the annular tube, steam blowing pipes are connected and fixed on both sides of the inner side of the annular tube, an outer gear ring is fixed on the annular tube, a gear is meshed on the right side of the outer gear ring, and the top of the gear is fixedly connected to the bottom end of the output shaft of the driving motor; the annular tube, inner stop sleeve, ventilation hole, steam blowing pipe, outer gear ring and gear are arranged in coordination, and the circular box is driven up and down by an electric telescopic rod, and the circular box drives the annular tube to move up and down, and the driving motor is used to drive the annular tube to rotate through the gear and the outer gear ring in turn, and the annular tube drives the two steam blowing pipes to move up and down and rotate, so as to achieve the effect of uniform heat shrinkage around the product in a full circle.

[0011] Preferably, the steam supply assembly includes a steam delivery pump fixedly installed on the top of the furnace cover, the steam delivery pump is electrically connected to the PLC controller, the bottom of the steam delivery pump is a steam outlet and is connected to the left side of the top inner wall of the round box with a telescopic hose fixed therebetween, the bottom end of the telescopic hose is located between the outside of the inner stop sleeve and the inside of the round box; the steam delivery pump and the telescopic hose cooperate to pump high-temperature steam into the round box through the telescopic hose, and the high-temperature steam then enters the annular tube through the vent hole for steam blowing and heating.

[0012] Preferably, a first sealing bearing is fixedly sleeved inside the round box, and the inner ring of the first sealing bearing is fixedly sleeved with the outer side of the annular tube.

[0013] Preferably, the inner fixed sleeve of the annular tube is provided with a second sealing bearing, and the inner ring of the second sealing bearing is fixedly sleeved with the outer side of the inner stop sleeve.

[0014] Preferably, a movable perforation is provided on the inner wall of the top of the furnace cover, and the telescopic hose is located in the movable perforation and does not contact the inner wall of the movable perforation.

[0015] Preferably, four corners of the bottom of the U-shaped bracket are fixedly connected with legs.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The steam shrinking furnace for an automatic sleeve labeling machine can convey the product with the heat shrink sleeve to the right through the cooperation of the steam conveying pump, belt conveyor, industrial identification camera, PLC controller, round box, driving motor, rotating blowing heating component and steam supply component, identify the product and automatically stop conveying after the product is conveyed to the heat shrinking position, and automatically move up and down and rotate to spray steam around the outside of the product after stopping conveying. By moving up and down and rotating to spray high-temperature steam around the product, the heat shrink sleeve on the outside of the product can be evenly heated and shrunk as a whole, avoiding the phenomenon of excessive heat shrinkage on one side and insufficient heat shrinkage on the other side, thereby improving the overall heat shrinkage uniformity. In addition, the steam spraying and conveying work can be automatically stopped after the heat shrinkage is completed, until the next product moves to the heat shrinking position to stop conveying and uniform heat shrinkage again, and so on, to achieve automatic and uniform heat shrinkage of multiple products one by one.

[0018] The utility model is provided with a series of structures, which are convenient for automatically moving up and down and rotating around the outer side of the product to spray steam after the product is conveyed to the heat shrinking position. By moving up and down and rotating around the product to spray high-temperature steam, the heat shrink label sleeve on the outer side of the product is uniformly heated and shrunk as a whole, avoiding the phenomenon of excessive heat shrinkage on one side and insufficient heat shrinkage on the other side, improving the uniformity of overall heat shrinkage, and automatically stopping steam spraying and continuing conveying work after the heat shrinkage is completed, thereby realizing automated uniform heat shrinkage work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0022] In the figure: 100, U-shaped bracket; 101, conveyor belt; 1, furnace cover; 2, rectangular perforation; 3, PLC controller; 4, electric telescopic rod; 5, round box; 6, ring pipe; 7, steam blowpipe; 8, inner stopper; 9, vent; 10, outer gear ring; 11, gear; 12, drive motor; 13, industrial identification camera; 14, telescopic hose; 15, steam delivery pump. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 3 As shown, a steam shrinking furnace for an automatic sleeve labeling machine proposed in this embodiment comprises a steam shrinking furnace body arranged at the discharge port of the automatic sleeve labeling machine, the steam shrinking furnace body comprises a belt conveyor, the belt conveyor comprises a U-shaped bracket 100, two driving rollers rotatably mounted between the front and rear inner walls of the U-shaped bracket 100, a conveying belt 101 transmission-connected to the two driving rollers, and a conveying motor fixedly mounted on the front side of the U-shaped bracket 100, the rear end of the output shaft of the conveying motor is fixedly connected to the front end of the driving roller on the left side, the bottom four corners of the U-shaped bracket 100 are fixedly connected with legs, which play the effect of fixing and raising the U-shaped bracket 100, and the conveying belt 101 of the belt conveyor is used to convey the products after the automatic sleeve labeling machine is sleeved with heat shrinkable sleeves to the right;

[0025] A furnace cover 1 with an opening at the bottom is fixedly connected to the top of the U-shaped bracket 100, and rectangular through-holes 2 with openings at the bottom are provided on the inner walls on both sides of the furnace cover 1, and the conveyor belt 101 is located in the two rectangular through-holes 2. A PLC controller 3 is fixedly installed on the top of the furnace cover 1, and an electric telescopic rod 4 is embedded and fixed on the top inner wall of the furnace cover 1, wherein an embedded through-hole is provided on the top inner wall of the furnace cover 1, and the electric telescopic rod 4 is movably sleeved in the embedded through-hole, and a fixing seat is integrally provided at the outer bottom of the electric telescopic rod 4, and the fixing seat is threadedly fixed on the top inner wall of the furnace cover 1, and the electric telescopic rod 4 is fixedly fixed on the top inner wall of the furnace cover 1 through the embedded hole and the embedded fixing, and an industrial recognition camera 13 is fixedly connected to the top inner wall of the furnace cover 1, and the industrial recognition camera 13, the conveying motor and the electric telescopic rod 4 are all electrically connected to the PLC controller 3, and the industrial recognition camera 13 recognizes that the product is conveyed to its lower part and transmits a signal to the PLC controller 3 to stop the movement and start the heat shrinkage;

[0026] The extended end of the electric telescopic rod 4 is fixedly connected to a round box 5 with an opening at the bottom. A round through hole located below the industrial identification camera 13 is provided on the top inner wall of the round box 5. A rotating blowing heating component connected to the interior of the round box 5 is sealed and installed inside the round box 5. A driving motor 12 whose output shaft is fixedly connected to the rotating blowing heating component is fixedly installed on the right side of the round box 5. The driving motor 12 is electrically connected to the PLC controller 3. After receiving the stop movement and start heat shrinkage signal, the PLC controller 3 controls the conveying motor to be turned off, the electric telescopic rod 4 to start forward and reverse reciprocatingly, and the driving motor 12 to start. The rotating blowing heating component is used to move up and down and rotate when the electric telescopic rod 4 and the driving motor 12 are started, so as to realize rotating heating around the outer side of the product for uniform heat shrinkage. A steam supply component is fixedly connected between the top of the furnace cover 1 and the top left side of the round box 5. The steam supply component is electrically connected to the PLC controller 3 and is used to supply high-temperature steam into the round box 5.

[0027] Specifically, the rotary blowing heating component includes an annular tube 6 which is sealed and rotatably sleeved in a round box 5, wherein a first sealing bearing is fixedly sleeved in the round box 5, and the inner ring of the first sealing bearing is fixedly sleeved in the outer side of the annular tube 6, which has the effect of sealing and rotating the annular tube 6. An inner stopper sleeve 8 is provided on the inner side of the annular tube 6 for sealing and rotating installation, wherein a second sealing bearing is fixedly sleeved in the inner side of the annular tube 6, and the inner ring of the second sealing bearing is fixedly sleeved in the outer side of the inner stopper sleeve 8, which has the effect of sealing and rotating installation of the annular tube 6. The inner stopper sleeve 8 is fixedly connected to the top inner wall of the round box 5 and is connected to the round through hole, and ventilation holes 9 which are connected to the inner side of the round box 5 are provided on both sides of the top of the annular tube 6. Steam blowing pipes 7 are connected and fixed on both sides of the inner side. An outer gear ring 10 is fixedly sleeved on the annular tube 6. A gear 11 is meshed on the right side of the outer gear ring 10. The top of the gear 11 is fixedly connected to the bottom end of the output shaft of the driving motor 12. The annular tube 6, inner stop sleeve 8, vent 9, steam blowing pipe 7, outer gear ring 10 and gear 11 are arranged to cooperate with each other. The electric telescopic rod 4 is used to drive the round box 5 to move up and down, and the round box 5 drives the annular tube 6 to move up and down. The driving motor 12 is used to drive the gear 11 to rotate. The gear 11 drives the annular tube 6 to rotate through the outer gear ring 10. The movement and rotation of the annular tube 6 will drive the two steam blowing pipes 7 to move up and down and rotate, thereby achieving the effect of uniform heat shrinkage around the product in a full circle.

[0028] Furthermore, the steam supply component includes a steam delivery pump 15 fixedly installed on the top of the furnace cover 1, the steam delivery pump 15 is electrically connected to the PLC controller 3, the bottom of the steam delivery pump 15 is a steam outlet and is connected to the left side of the top inner wall of the round box 5 with a telescopic hose 14 fixed thereto, wherein a movable perforation is opened on the top inner wall of the furnace cover 1, the telescopic hose 14 is located in the movable perforation and does not contact the inner wall of the movable perforation, which plays the role of allowing the telescopic hose 14 to pass through, and the bottom end of the telescopic hose 14 is located between the outer side of the inner stop sleeve 8 and the inner side of the round box 5; the steam delivery pump 15 and the telescopic hose 14 are arranged to cooperate, and the steam delivery pump 15 is connected to the external steam supply pipe to pump high-temperature steam into the round box 5 through the telescopic hose 14, and the high-temperature steam then enters the annular tube 6 through the vent 9 for steam blowing and heating.

[0029] The method of using this embodiment is as follows: when in use, the inlet of the steam delivery pump 15 is connected to the external steam supply pipeline in advance, and when the delivery motor of the belt conveyor is turned on to drive the conveyor belt 101 to rotate, the conveyor belt 101 conveys the product after the automatic labeling machine has put on the heat shrink label sleeve to the right, and when the product is delivered to the bottom of the industrial identification camera 13, the industrial identification camera 13 recognizes that the product is delivered to its lower part and transmits it to the PLC controller 3 to stop the movement and start the heat shrink signal. At this time, the PLC controller 3 controls the delivery motor to be turned off, the electric telescopic rod 4 to start forward and reverse reciprocating, the drive motor 12 to start and the steam delivery pump 15 to start. At this time, the conveyor belt 101 stops the delivery work because the delivery motor is turned off. At this time, the electric telescopic rod 4 drives the round box 5 to move up and down, and the round box 5 moves up and down. The box 5 drives the annular tube 6 to move up and down. When the driving motor 12 is started, the driving gear 11 rotates. The gear 11 drives the annular tube 6 to rotate through the outer gear ring 10. The annular tube 6 moves up and down and rotates, which drives the two steam blowing pipes 7 to move up and down and rotate. When the steam delivery pump 15 is started, high-temperature steam is pumped into the round box 5 through the telescopic hose 14. The high-temperature steam then enters the annular tube 6 through the vent 9. The high-temperature steam is ejected through the two steam blowing pipes 7 that rotate and move up and down, achieving the effect of heating by rotating around the outer side of the product and displacing up and down. By displacing and rotating around the product to eject high-temperature steam, the heat shrink label sleeve on the outer side of the product can be evenly heated and shrunk as a whole, avoiding the phenomenon of excessive heat shrinkage on one side and insufficient heat shrinkage on the other sides, thereby improving the uniformity of heat shrinkage.

[0030] When the industrial recognition camera 13 recognizes that the round box 5 has risen back to the initial position, it transmits a signal to the PLC controller 3 to stop heat shrinking and conveying. At this time, the PLC controller 3 controls the conveying motor to start, the electric telescopic rod 4 to close, the drive motor 12 to close, and the steam conveying pump 15 to close, and then convey the product again until the next product is conveyed to the lower part of the industrial recognition camera 13. After recognition again, the conveying is stopped and the uniform heat shrinking is carried out around, and so on, to achieve automated uniform heat shrinking.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steam shrinking furnace for an automatic sleeve labeling machine, comprising a steam shrinking furnace body arranged at a discharge port of the automatic sleeve labeling machine, the steam shrinking furnace body comprising a belt conveyor, characterized in that: The belt conveyor comprises a U-shaped bracket (100), two driving rollers rotatably mounted between the front and rear inner walls of the U-shaped bracket (100), a conveyor belt (101) drivingly connected to the two driving rollers, and a conveying motor fixedly mounted on the front side of the U-shaped bracket (100), wherein the rear end of the output shaft of the conveying motor is fixedly connected to the front end of the driving roller on the left side; The top of the U-shaped bracket (100) is fixedly connected to a furnace cover (1) with an opening at the bottom, and rectangular through-holes (2) with openings at the bottom are provided on the inner walls on both sides of the furnace cover (1). The conveyor belt (101) is located in the two rectangular through-holes (2). A PLC controller (3) is fixedly installed on the top of the furnace cover (1). An electric telescopic rod (4) is embedded and fixed on the top inner wall of the furnace cover (1). An industrial identification camera (13) is fixedly connected to the top inner wall of the furnace cover (1). The industrial identification camera (13), the conveying motor and the electric telescopic rod (4) are all electrically connected to the PLC controller (3). The extended end of the electric telescopic rod (4) is fixedly connected to a round box (5) with an opening at the bottom, a round through hole located below the industrial identification camera (13) is provided on the top inner wall of the round box (5), a rotating blowing heating component connected to the inside of the round box (5) is sealed and installed, and a driving motor (12) whose output shaft is fixedly connected to the rotating blowing heating component is fixedly installed on the right side of the round box (5), and the driving motor (12) is electrically connected to the PLC controller (3); A steam supply component is fixedly connected between the top of the furnace cover (1) and the left side of the top of the round box (5), and the steam supply component is electrically connected to the PLC controller (3).

2. The steam shrinking furnace for an automatic sleeve labeling machine according to claim 1, characterized in that: The rotary blowing heating component comprises an annular tube (6) which is sealed and rotatably sleeved in a round box (5); an inner stopper sleeve (8) is provided on the inner side of the annular tube (6); the inner stopper sleeve (8) is fixedly connected to the inner wall of the top of the round box (5) and is connected to the round through hole; both sides of the top of the annular tube (6) are provided with vent holes (9) which are connected to the inner side of the round box (5); both sides of the inner side of the annular tube (6) are connected and fixed with steam blowing pipes (7); an outer gear ring (10) is fixedly sleeved on the annular tube (6); a gear (11) is meshed on the right side of the outer gear ring (10); the top of the gear (11) is fixedly connected to the bottom end of the output shaft of the driving motor (12).

3. The steam shrinking furnace for an automatic sleeve labeling machine according to claim 2, characterized in that: The steam supply assembly comprises a steam delivery pump (15) fixedly mounted on the top of the furnace cover (1), the steam delivery pump (15) being electrically connected to the PLC controller (3), the bottom of the steam delivery pump (15) being a steam outlet and being connected to the left side of the top inner wall of the round box (5) and having a telescopic hose (14) fixed thereto, the bottom end of the telescopic hose (14) being located between the outer side of the inner stop sleeve (8) and the inner side of the round box (5).

4. The steam shrinking furnace for an automatic sleeve labeling machine according to claim 2, characterized in that: A first sealing bearing is fixedly sleeved inside the round box (5), and the inner ring of the first sealing bearing is fixedly sleeved on the outer side of the annular tube (6).

5. The steam shrinking furnace for an automatic sleeve labeling machine according to claim 2, characterized in that: The inner fixed sleeve of the annular tube (6) is provided with a second sealing bearing, and the inner ring of the second sealing bearing is fixedly sleeved with the outer side of the inner stop sleeve (8).

6. The steam shrinking furnace for an automatic sleeve labeling machine according to claim 3, characterized in that: A movable through hole is provided on the inner wall of the top of the furnace cover (1), and the telescopic hose (14) is located in the movable through hole and does not contact the inner wall of the movable through hole.

7. The steam shrinking furnace for an automatic sleeve labeling machine according to claim 1, characterized in that: The four corners of the bottom of the U-shaped bracket (100) are all fixedly connected with supporting legs.

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