Shrinkage mechanism of packaging machine

Abstract

The invention discloses a shrinkage mechanism of a packaging machine, and belongs to the technical field of foam box packaging machines, the shrinkage mechanism comprises a conveying table, a thermal shrinkage furnace is mounted at the top of the conveying table, hydraulic cylinders are symmetrically mounted at the top of the thermal shrinkage furnace, toothed plates are mounted at the telescopic ends of the hydraulic cylinders, and sliding blocks are fixed to the two sides of each toothed plate; sliding grooves matched with the sliding blocks are symmetrically formed in the inner side wall of the thermal shrinkage furnace, the sliding grooves are in sliding connection with the sliding blocks, and rotating shafts are symmetrically and rotationally installed in the thermal shrinkage furnace. The foam box film thermal shrinkage efficiency and effect can be improved, the hydraulic cylinder is linked with the air outlet nozzle to rotate to change the air supply angle, all-directional hot air covering can be conducted on the foam box on the conveying table, uneven local heating is avoided, and it is guaranteed that the film is rapidly and evenly shrunk; the air blowing area is enlarged through vertical air sweeping, the device is suitable for foam boxes of different sizes, the universality of the device is enhanced, the production efficiency is improved, the energy consumption and the production cost are reduced, and the industrial batch production requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to a shrinkage mechanism, in particular to a shrinkage mechanism of a packaging machine, and belongs to the technical field of foam box packaging machines. BACKGROUND

[0002] In the prior art, such as the application with the application number 201310371782.5, a heat shrinkage mechanism of a heat shrinkage packaging machine is disclosed. The opening and closing heat shrinkage cavity can make the stacked products of any height enter, and the setting of the lifting platform makes the stacked products of any height pass through the heat shrinkage cavity everywhere, and the heat shrinkage processing of the attached film is carried out.

[0003] At present, there are still some deficiencies in the above-mentioned application:

[0004] Although the heat shrinkage mechanism of the heat shrinkage packaging machine can be adjusted in height, the position and range of the hot air blowing are very fixed, the production efficiency is limited, different height materials cannot be quickly covered, and the operation time is increased due to the need for multiple adjustments of the lifting platform. In addition, the hot air is easy to concentrate in the fixed area, causing local overheating, which not only affects the quality of the film, but also may damage the materials that are not resistant to high temperature.

[0005] Therefore, a shrinkage mechanism of a packaging machine is designed to optimize the above problems. SUMMARY

[0006] The main purpose of the present application is to provide a shrinkage mechanism of a packaging machine to solve the problems raised in the background art.

[0007] The purpose of the present application can be achieved by adopting the following technical scheme:

[0008] A shrinkage mechanism of a packaging machine, comprising a conveying table, a heat shrinkage furnace is installed on the top of the conveying table, hydraulic cylinders are symmetrically installed on the top of the heat shrinkage furnace, toothed plates are installed on the extension ends of the hydraulic cylinders, sliding blocks are fixed on both sides of the toothed plates, sliding grooves matched with the sliding blocks are symmetrically formed in the inner side walls of the heat shrinkage furnace, and the sliding grooves are slidingly connected with the sliding blocks, rotating shafts are symmetrically installed in the interior of the heat shrinkage furnace, gears are symmetrically installed on the outer sides of the rotating shafts, and the gears are engaged with the toothed plates, fixed frames are fixed at the middle positions of the rotating shafts, fixed pipes are uniformly fixed in the fixed frames, air outlet nozzles are uniformly arranged on one side of the fixed pipes, air supply assemblies are arranged in the heat shrinkage furnace, and heating rods are uniformly installed on the inner walls of the heat shrinkage furnace.

[0009] Preferably: the air supply assembly comprises a baffle and a guide frame, the baffle is symmetrically installed in the inside of the heat shrinkage furnace, the side of the baffle is fixed with the guide frame, the inside of the guide frame is symmetrically installed with a fan, the top of the guide frame is fixed with a heat exchange frame, the inside of the heat exchange frame is uniformly provided with a corrugated plate, the top of the heat exchange frame is fixed with a fixed cover, the top of the fixed cover is uniformly provided with a through hole, the top of the fixed cover is uniformly provided with an expansion pipe in communication with the through hole, and the top end of the expansion pipe is in communication with the bottom of the fixed pipe.

[0010] Preferably: the side of the baffle is provided with a protective plate, the four corners of the protective plate are provided with bolts, and the protective plate is fixedly connected with the side of the baffle through the bolts.

[0011] Preferably: the heat exchange frame is made of aluminum alloy, and the surface of the aluminum alloy is subjected to anodic oxidation treatment to form an oxide film layer.

[0012] Preferably: the contact surface of the sliding block and the sliding groove is provided with a wear-resistant layer, and the wear-resistant layer is a polytetrafluoroethylene layer.

[0013] Preferably: the outside of the heat shrinkage furnace is provided with a heat insulation layer, and the heat insulation layer is an aluminum silicate fiber layer.

[0014] Preferably: the air outlet of the air outlet nozzle is of a flat structure, and the inner wall of the air outlet nozzle is provided with a flow guide groove.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] 1、The present application can improve the heat shrinkage efficiency and effect of the foam box film by the cooperation of the conveying table, the heat shrinkage furnace, the hydraulic cylinder, the toothed plate, the rotating shaft, the gear, the fixed frame, the fixed pipe, the air outlet nozzle, the sliding groove, the sliding block and the heating rod. The air outlet nozzle is rotated to change the air supply angle, the foam box on the conveying table is covered with hot air in all directions, local uneven heating is avoided, the film is quickly and uniformly shrunk, the air supply area is expanded by up and down air sweeping, different size foam boxes are adapted, the universality of the equipment is enhanced, the production efficiency is improved, the energy consumption and production cost are reduced, and the industrial batch production demand is met.

[0017] 2、The present application can improve the heating efficiency by the cooperation of the baffle, the guide frame, the fan, the heat exchange frame, the corrugated plate, the fixed cover, the through hole, the expansion pipe and the protective plate. The air flow distance is prolonged by the unique path design, the material is heated efficiently and stably, the heat shrinkage demand is met, the energy consumption is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view of the present application;

[0019] Figure 2A structure diagram of a part of the application; Figure 1 A structure diagram of a part of the application;

[0020] Figure 3 A structure diagram of a part of the application;

[0021] Figure 4 A structure diagram of a part of the application;

[0022] In the figure: 1, conveying table; 2, heat shrinkage furnace; 3, hydraulic cylinder; 4, toothed plate; 5, rotating shaft; 6, gear; 7, fixed frame; 8, fixed tube; 9, air outlet nozzle; 10, air supply assembly; 1001, baffle; 1002, flow guide frame; 1003, fan; 1004, heat exchange frame; 1005, wave plate; 1006, fixed cover; 1007, through hole; 1008, telescopic tube; 1009, protective plate; 1010, filter screen; 1011, bolt; 11, sliding groove; 12, sliding block; 13, heating rod. DETAILED DESCRIPTION

[0023] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application.

[0024] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but merely represents some of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the scope of the present application.

[0025] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0026] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0027] In the description of the present application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, such terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0028] Embodiment 1

[0029] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present embodiment proposes a shrinking mechanism of a packaging machine, comprising a conveying table 1, a heat shrinking furnace 2 is installed on the top of the conveying table 1, a hydraulic cylinder 3 is symmetrically installed on the top of the heat shrinking furnace 2, the hydraulic cylinder 3 drives the gear 6 to rotate through the gear plate 4, drives the fixed frame 7 to swing within an angle range of 0°~60°, realizes the adjustable heat air covering angle, the telescopic ends of the hydraulic cylinder 3 are all installed with the gear plate 4, the both sides of the gear plate 4 are all fixed with the sliding block 12, the inner side wall of the heat shrinking furnace 2 is symmetrically provided with the sliding groove 11 matched with the sliding block 12, and the sliding groove 11 is slidingly connected with the sliding block 12, the heat shrinking furnace 2 is symmetrically rotationally installed with the rotating shaft 5 inside, the rotating shaft 5 is symmetrically installed with the gear 6 outside, and the gear 6 is engaged with the gear plate 4, the fixed frame 7 is fixed at the middle position of the rotating shaft 5, the length of the fixed frame 7 is greater than the length of the processed article, guarantees the number of the fixed tube 8 and the air outlet nozzle 9 enough to meet the comprehensive coverage of the heat air to the article, the fixed tube 8 is uniformly fixed inside the fixed frame 7, the air outlet nozzle 9 is uniformly arranged on one side of the fixed tube 8, the heat shrinking furnace 2 is provided with the air supply assembly 10 inside, and the heating rod 13 is uniformly installed on the inner wall of the heat shrinking furnace 2.

[0030] Start the hydraulic cylinder 3, the telescopic end of the hydraulic cylinder 3 pushes the gear plate 4, under the sliding cooperation of the sliding block 12 and the sliding groove 11, the gear plate 4 moves downward, the gear plate 4 drives the gear 6 to rotate, the gear 6 drives the fixed frame 7 and the fixed tube 8 to rotate with the center of the gear 6, so that the fixed tube 8 drives the air outlet nozzle 9 to rotate, promotes the air supply angle of the air outlet nozzle 9 to change, the telescopic end of the hydraulic cylinder 3 retracts and drives the gear plate 4 to move upward, the air outlet nozzle 9 rotates reversely, the air outlet nozzle 9 blows the heat air to the foam box on the conveying table 1, and the film is shrunk comprehensively and quickly.

[0031] Embodiment 2

[0032] The scheme in embodiment 1 is further introduced in combination with the specific working mode, and the details are described below:

[0033] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, as a preferred embodiment, on the basis of the above manner, further, the air supply assembly 10 comprises a baffle 1001 and a flow guide frame 1002, the baffle 1001 is symmetrically installed in the heat shrinkage furnace 2, one side of the baffle 1001 is fixed with the flow guide frame 1002, the flow guide frame 1002 is internally symmetrically installed with a fan 1003, the top of the flow guide frame 1002 is fixed with a heat exchange frame 1004, the heat exchange frame 1004 is internally uniformly provided with a wave plate 1005, the top of the heat exchange frame 1004 is fixed with a fixed cover 1006, the top of the fixed cover 1006 is uniformly provided with a through hole 1007, the top of the fixed cover 1006 is uniformly provided with an expansion pipe 1008 in communication with the through hole 1007, and the top end of the expansion pipe 1008 is in communication with the bottom of the fixed pipe 8.

[0034] Start the heating rod 13 and the fan 1003, the heat generated by the heating rod 13 enters the flow guide frame 1002 and the heat exchange frame 1004 with the air from the fan 1003 air inlet, the wave plate 1005 increases the air flow path length, so that the air is further heated, and the heated air enters the expansion pipe 1008 through the through hole 1007, and is uniformly sent out from the air outlet 9.

[0035] As shown in Figure 4 As a preferred embodiment, on the basis of the above manner, further, one side of the baffle 1001 is provided with a protective plate 1009, bolts 1011 are arranged at the four corners of the protective plate 1009, the protective plate 1009 is fixedly connected with one side of the baffle 1001 through the bolts 1011, and a filter screen 1010 is installed at the middle position of the protective plate 1009.

[0036] The protective plate 1009 is installed on one side of the baffle 1001 through the bolts 1011, and after starting the fan 1003, the hot air is filtered by the filter screen 1010 before entering the flow guide frame 1002, which facilitates the maintenance work of the staff.

[0037] As shown in Figure 1 As a preferred embodiment, on the basis of the above manner, further, the heat exchange frame 1004 is made of aluminum alloy, and the surface of the aluminum alloy is subjected to anodic oxidation treatment to form an oxide film layer.

[0038] The aluminum alloy material has good heat conduction performance, can quickly transfer heat, and improves the air heating efficiency; the oxide film layer formed by anodic oxidation treatment enhances the wear resistance and corrosion resistance of the heat exchange frame 1004.

[0039] As shown in Figure 3 As a preferred embodiment, on the basis of the above manner, further, a wear-resistant layer is arranged on the contact surface of the sliding block 12 and the sliding groove 11, and the wear-resistant layer is a polytetrafluoroethylene layer.

[0040] The polytetrafluoroethylene wear-resistant layer has an extremely low friction coefficient, which can significantly reduce the wear between the sliding block 12 and the sliding groove 11, ensure smooth sliding of the tooth plate 4 during lifting, reduce the running resistance, and improve the reliability and stability of the mechanism movement.

[0041] As shown in Figure 1 , as a preferred embodiment, on the basis of the above-mentioned mode, further, the outer side of the heat shrinkage furnace 2 is provided with a heat insulation layer, and the heat insulation layer is an aluminum silicate fiber layer.

[0042] The aluminum silicate fiber heat insulation layer has good heat insulation performance, can effectively block the heat loss of the shrinkage furnace, reduce the surface temperature of the equipment, reduce the heat loss, and improve the energy utilization efficiency; at the same time, avoid accidental scalding of the operator, and improve the safety of the equipment use.

[0043] As shown in Figure 2 , as a preferred embodiment, on the basis of the above-mentioned mode, further, the air outlet of the air outlet nozzle 9 is a flat structure, and the inner wall of the air outlet nozzle 9 is provided with a flow guide groove, and the inner wall of the air outlet nozzle 9 is provided with 8 trapezoidal flow guide grooves, which are evenly distributed along the length direction of the air outlet nozzle 9.

[0044] The flat air outlet increases the hot air coverage area, can quickly and uniformly heat the film, improves the packaging efficiency, and the inner wall flow guide groove optimizes the hot air flow direction, avoids airflow turbulence, and ensures that the hot air is uniformly diffused to the film everywhere.

[0045] Example 3

[0046] The schemes in Examples 1 and 2 will be further introduced in combination with specific working modes, which will be described in detail below:

[0047] Start the heating rod 13 and the fan 1003, air is heated by the heating rod 13 and enters the fan 1003, the air is first filtered by the filter screen 1010 on the protective plate 1009, then enters the flow guide frame 1002 and the heat exchange frame 1004. At the same time, the heat generated by the heating rod 13 and the air are mixed again in the heat exchange frame 1004, guided by the wave plate 1005 to form a circuitous flow path, prolong the air residence time, and ensure that the air is heated sufficiently;

[0048] The heated hot air enters the telescopic pipe 1008 through the through hole 1007 of the fixed cover 1006, and then is delivered to each air outlet nozzle 9 through the fixed pipe 8. The flat air outlet of the air outlet nozzle 9 cooperates with the inner wall flow guide groove to make the hot air blow out uniformly in a fan shape, covering the foam box on the conveying table 1.

[0049] The hydraulic cylinder 3 is started, the telescopic end drive toothed plate 4 is along the slide groove 11 up and down sliding, drive gear 6 rotation, in turn make fixed frame 7 with fixed tube 8 swing around gear 6 axle center.This linkage mechanism makes all air outlet 9 synchronous adjustment air angle, from different directions to foam box blow hot air.By the reciprocating motion of hydraulic cylinder 3, air outlet 9 realizes up and down angle adjustment, ensure that the film can be subjected to uniform heat shrinkage in each part, efficient completion of packaging.

[0050] The above is only further embodiments of the present application, but the scope of protection of the present application is not limited to this, any skilled in the art of the technical personnel in the scope disclosed by the present application, according to the technical scheme and the concept of the present application are equivalent to replace or change, all belong to the protection scope of the present application.

Claims

1. A shrinking mechanism of a packaging machine, comprising a conveyor table (1), characterized in that: The top of the conveying table (1) is provided with a heat shrinkage furnace (2), the top of the heat shrinkage furnace (2) is symmetrically provided with a hydraulic cylinder (3), the telescopic ends of the hydraulic cylinder (3) are both provided with a toothed plate (4), both sides of the toothed plate (4) are fixedly provided with a sliding block (12), the inner side wall of the heat shrinkage furnace (2) is symmetrically provided with a sliding groove (11) matched with the sliding block (12), and the sliding groove (11) and the sliding block (12) are in sliding connection, the heat shrinkage furnace (2) is symmetrically provided with a rotating shaft (5) in the inside, the outer side of the rotating shaft (5) is symmetrically provided with a gear (6), and the gear (6) is engaged with the toothed plate (4), the rotating shaft (5) is fixedly provided with a fixed frame (7) at the middle position, the fixed frame (7) is uniformly provided with a fixed pipe (8) in the inside, and the fixed pipe (8) is uniformly provided with an air outlet nozzle (9) on one side, the heat shrinkage furnace (2) is provided with a air supply assembly (10), and the inner wall of the heat shrinkage furnace (2) is uniformly provided with a heating rod (13).

2. A shrinking mechanism of a packaging machine according to claim 1, characterized in that: The air supply assembly (10) comprises a baffle (1001) and a flow guide frame (1002), the baffle (1001) is symmetrically arranged in the heat shrinkage furnace (2), the baffle (1001) is fixedly provided with the flow guide frame (1002) on one side, the flow guide frame (1002) is symmetrically provided with a fan (1003) in the inside, the flow guide frame (1002) is fixedly provided with a heat exchange frame (1004) on the top, the heat exchange frame (1004) is uniformly provided with a wave plate (1005) in the inside, the heat exchange frame (1004) is fixedly provided with a fixed cover (1006) on the top, the fixed cover (1006) is uniformly provided with a through hole (1007) on the top, the fixed cover (1006) is uniformly provided with an expansion pipe (1008) communicated with the through hole (1007) on the top, and the top end of the expansion pipe (1008) is communicated with the bottom of the fixed pipe (8).

3. A shrinking mechanism of a packaging machine according to claim 2, characterized in that: The baffle (1001) is provided with a protective plate (1009) on one side, the protective plate (1009) is provided with a bolt (1011) at the four corners, and the protective plate (1009) is fixedly connected with the baffle (1001) on one side through the bolt (1011). The protective plate (1009) is provided with a filter screen (1010) at the middle position.

4. A shrinking mechanism of a packaging machine according to claim 2, characterized in that: The heat exchange frame (1004) is made of aluminum alloy, and the surface of the aluminum alloy is subjected to anodic oxidation treatment to form an oxide film layer.

5. The shrinking mechanism of a packaging machine according to claim 1, characterized in that: The contact surface of the sliding block (12) and the sliding groove (11) is provided with a wear-resistant layer, and the wear-resistant layer is a polytetrafluoroethylene layer.

6. A contracting mechanism of a packaging machine according to claim 1, characterized in that: The outer side of the heat shrinkage furnace (2) is provided with a heat insulation layer, and the heat insulation layer is an aluminum silicate fiber layer.

7. The shrinking mechanism of a packaging machine according to claim 1, characterized in that: The air outlet of the air outlet nozzle (9) is in a flat structure, and the inner wall of the air outlet nozzle (9) is provided with a flow guide groove.

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