CN210590784U - Mouth adding mold for nylon co-extrusion composite packaging bag - Google Patents

Abstract

A mouth adding mold for a nylon co-extrusion composite packaging bag belongs to the field of flexible packaging mouth adding equipment. The upper heating block is arranged below the upper heating block, the lower heating block is positioned below the upper module, the two sides of the upper and lower modules are planes, the middle part of the upper module is an upwards concave arc surface, the middle part of the lower module is a downwards concave arc surface, the shapes of the opposite arc surfaces of the upper and lower modules are matched with the shape of the bag nozzle, the lower heating block is arranged at the bottom of the lower module, the lower module is fixed with the lower heating block, the upper heating block can move up and down along with the upper module, the packaging bag nozzle needing to be filled is arranged between the upper and lower modules, the upper and lower heating blocks are respectively connected with a temperature control device, the mold is positioned below the cylinder, the push rod of the cylinder is vertically downward, the upper heating block is connected to the lower end of the push rod of the cylinder, the surface of the opposite side of the upper and lower modules is concave-convex, and convex surfaces of the. The utility model discloses simple structure, convenient to use, the involution is effectual, the air leakage rate is low.

Description

Mouth adding mold for nylon co-extrusion composite packaging bag

Technical Field

The utility model relates to a nylon is crowded compound wrapping bag altogether with adding mouth mould belongs to the flexible package and adds mouth equipment technical field.

Background

At present, the flexible package industry develops rapidly, the application range is continuously expanded, especially the packages of products such as daily chemicals, foods, chemical industry and the like grow rapidly, and a part of the products need to be added with mouths so as to be convenient for consumers to use. The contents are mainly liquid such as laundry detergent, fruit juice and the like, the weight of a single package is generally within 2000g, the inner layer of the soft package is mainly polyethylene, the heat sealing performance is good, but the strength and the stiffness are slightly poor, and the soft package is only suitable for small packages. Nylon co-extruded material packages are typically chosen for products having a single item weight in excess of 2000 g.

The nylon co-extrusion material has high strength, good stiffness and good appearance formability, but has higher requirements on heat sealing conditions and is easy to influence the sealing effect of the added nozzle; meanwhile, when the large-caliber suction nozzle is used for adding the nozzle, the suction nozzle is easily deformed under the influence of pressure, and the sealing effect of the position of the suction nozzle is finally influenced. When the suction nozzle is not well controlled in the sealing process, the phenomena of product leakage, damage and the like are very easy to occur under the conditions of pressure and impact in the packaging, storage and transportation processes.

Chinese patent CN 204725925U discloses a mouth-adding mold for ultra-thin plastic flexible packaging bags, which is only suitable for adding mouths of plastic flexible packaging bags with thickness below 60 microns, because the heat-sealing contact surface of the plastic flexible packaging bag and the suction mouth is a continuous plane, the sealing pressure is lower when the cylinder pressure is fixed, and it is not suitable for adding mouths of nylon co-extrusion composite packaging bags with thickness above 200 microns.

SUMMERY OF THE UTILITY MODEL

The utility model provides a nylon is crowded composite packaging bag altogether with adding mouth mould is applicable to the deflection good, and it is high to play a temperature, and thickness is in the nylon crowded composite packaging bag altogether more than 200 microns with the mouth operation, it adds that the mouth leakproofness is good, the seepage proportion is low.

In order to solve the technical problem, the technical scheme of the utility model is that:

a mouth-adding mould for nylon co-extrusion composite packaging bags comprises an upper module, a lower module, an upper heating block and a lower heating block, wherein the upper module is arranged below the upper heating block, the lower module is positioned below the upper module, the two sides of the upper module and the lower module are both planes, the middle part of the upper module is an upwards concave cambered surface, the middle part of the lower module is a downwards concave cambered surface, the shapes of the upper module and the lower module relative to the cambered surfaces are matched with the shape of a bag mouth, the lower heating block is arranged at the bottom of the lower module, the lower module and the lower heating block are fixed, the upper heating block can move up and down along with the upper module, the packaging bag mouth to be added is arranged between the upper module and the lower module, and the upper heating block and the lower heating block are respectively connected with, the die is positioned below the air cylinder, an air cylinder push rod is vertically downward, the upper heating block is connected to the lower end of the air cylinder push rod, and an air cylinder body is connected with the compressed air pipeline through a pressure regulating valve; the surface of the opposite side of the upper module and the lower module is concave-convex, and the convex surfaces of the upper module and the lower module are opposite.

The protruding surfaces of the upper module and the lower module are at least 4.

The width of the convex surface is 2-3mm, the height of the convex is 1-1.5mm, and the interval between every two convex surfaces is 1-2 mm.

The joints of the planes and the cambered surfaces at the two sides of the upper module and the lower module are respectively provided with an outward extending part facing one side of the bag body, and the outward extending parts are used for increasing the heat sealing area of the bag body and the suction nozzle.

The cylinder push rod is a double-shaft push rod, so that the stability of connection with the upper heating block can be improved.

Above-mentioned nylon is crowded composite packaging bag altogether with adding mouth mould, every not suction nozzle of equidimension corresponds one and sheathes module in and lower module and corresponding last heating block and lower heating block.

The utility model discloses a pressure between module and the lower module in the cylinder control, the temperature of module and lower module in controlling through temperature control device and heating piece, simultaneously through the unsmooth design of upper and lower module surface, pressure when the increase is sealed, and many bellyings also are favorable to the sealing stability behind the nylon crowded compound flexible packaging bag with mouth altogether, ensure the involution surfacing simultaneously.

The utility model discloses simple structure, convenient to use have solved the nylon and have crowded the defect that the outward appearance involution is bad, the air leakage rate is high that causes because of intensity or temperature instability when compound wrapping bag is crowded altogether with the mouth sealing, and the mouth operation that adds of specially adapted thickness nylon crowded compound wrapping bag altogether more than 200 microns adds, and the wrapping bag product after adding the mouth receives user's general welcome.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a side view of the present invention;

the figures are labeled as follows: go up module 1, lower module 2, cylinder push rod 3, go up heating block 4, lower heating block 5, bellying 6, outside extension 7.

Detailed Description

The utility model discloses constitute by last module 1, lower module 2, last heating block 4, lower heating block 5, temperature control device.

Fig. 1 shows that the mold is located below the cylinder, the cylinder push rod 3 is a double-shaft push rod and is vertically downward, the upper heating block 4 is connected to the lower end of the cylinder push rod 3, the upper module 1 is installed below the upper heating block 4, and the upper heating block 4 can move up and down along with the upper module 1. Lower module 2 is located module 1 below, and keeps certain interval between the two, and the packing bag mouth that needs add the mouth is arranged in between module 1 and the lower module 2, and the both sides of going up the relative one side of module 1 and lower module 2 are the plane, goes up module 1 mid portion and is the cambered surface of upwards concavity, and 2 mid portions of lower module are the cambered surface of downwards concavity, and the shape of the relative cambered surface of the two is with the shape looks adaptation of bag mouth. The bottom of the lower module 2 is provided with a lower heating block 5, and the lower module 2 and the lower heating block 5 are fixed.

The upper heating block 4 and the lower heating block 5 are respectively connected with a temperature control device, the upper heating block 4 and the lower heating block 5 respectively conduct heat to the upper module 1 and the lower module 2, and the upper module 1 and the lower module 2 carry out heat sealing on the mouth of the flexible packaging bag. The cylinder body is connected with a compressed air pipeline through a pressure regulating valve, compressed air can push a cylinder push rod 3 of the cylinder to move up and down, the cylinder push rod 3 drives an upper module 1 to move up and down, and pressure and sealing time between the upper module 1 and a lower module 2 are regulated through air pressure change.

Fig. 2 shows that the joints of the planes and the cambered surfaces at the two sides of the upper module 1 and the lower module 2 are respectively provided with an outward extending part 7 facing one side of the bag body, so as to increase the heat sealing area of the bag body and the suction nozzle.

Fig. 3 shows that the surfaces of the opposite sides of the upper module 1 and the lower module 2 are concave-convex, and each has at least 4 convex surfaces 6, and the convex surfaces 6 of the surfaces of the upper module and the lower module are opposite. The width of the convex surfaces 6 is 2-3mm, the height of the convex is 1-1.5mm, and the interval between every two convex surfaces 6 is 1-2 mm. The concave-convex design of the surfaces of the upper module and the lower module can increase the pressure intensity during sealing and ensure the smoothness of the sealing surface.

Each suction nozzle with different sizes corresponds to one upper module 1, one lower module 2 and one corresponding upper heating block 4 and one corresponding lower heating block 5.

The utility model discloses a use method as follows:

the pressure and time of the cylinder are adjusted through the pressure adjusting valve, the temperature control device is started to heat the upper heating block 4 and the lower heating block 5 to a set temperature, then the mouth adding part and the bag mouth of the nylon co-extrusion composite packaging bag are horizontally placed between the upper module 1 and the lower module 2, the pressure adjusting valve is opened, the cylinder presses downwards, the cylinder push rod 3 drives the upper module 1 to move downwards, certain pressure is generated after the nylon co-extrusion composite packaging bag is contacted with the packaging bag and the mouth, the pressure duration is 3-4 seconds, and the bag body and the bag mouth are sealed under the action of the temperature and the pressure. The air pressure is controlled at 8-12kgf/cm during the process of adding the nozzle²The temperature of the upper heating block 4 and the lower heating block 5 is controlled at 150-170 ℃.

The utility model discloses an embodiment as follows:

the type of the cylinder: TN/TDA50-50 of the double-shaft cylinder;

the surfaces of the opposite sides of the upper module 1 and the lower module 2 are respectively provided with 4 convex surfaces;

the width of the convex surfaces is 2mm, the height of the convex surfaces is 1.2mm, and the interval between the convex surfaces is 2 mm;

the temperature control device is E5AC-RX3ASM-8080, 220V/15A/3 kw.

Claims (5)

1. A mouth adding mold for a nylon co-extrusion composite packaging bag is characterized by comprising an upper module (1), a lower module (2), an upper heating block (4) and a lower heating block (5), wherein the upper module (1) is arranged below the upper heating block (4), the lower module (2) is arranged below the upper module (1), two sides of the upper module (1) and two sides of the lower module (2) are both planes, the middle part of the upper module (1) is an upward concave cambered surface, the middle part of the lower module (2) is a downward concave cambered surface, the shapes of the relative cambered surfaces of the upper module (1) and the lower module (2) are matched with the shape of a bag mouth, the lower heating block (5) is arranged at the bottom of the lower module (2), the lower module (2) and the lower heating block (5) are fixed, the upper heating block (4) can move up and down along with the upper module (1), the packaging bag mouth needing to be added is arranged between the upper module (1) and the lower module (2, the upper heating block (4) and the lower heating block (5) are respectively connected with a temperature control device, the mold is positioned below the cylinder, the cylinder push rod (3) is vertically downward, and the upper heating block (4) is connected to the lower end of the cylinder push rod (3); the surface of the opposite side of the upper module (1) and the lower module (2) is concave-convex, and the convex surfaces (6) of the surfaces of the upper module (1) and the lower module (2) are opposite.

2. The mouth adding die for the nylon co-extrusion composite packaging bag according to claim 1, wherein at least 4 convex surfaces (6) on the surfaces of the upper die block (1) and the lower die block (2) are provided.

3. The nozzle adding mold for the nylon co-extrusion composite packaging bag as claimed in claim 2, wherein the width of the convex surfaces (6) is 2-3mm, the height of the convex surfaces is 1-1.5mm, and the interval between every two convex surfaces (6) is 1-2 mm.

4. The mouth adding mold for the nylon co-extrusion composite packaging bag as claimed in claim 3, wherein the joints of the planes and the cambered surfaces of the two sides of the upper mold block (1) and the lower mold block (2) are respectively provided with an outward extending part (7) facing one side of the bag body.

5. The mouth adding die for the nylon co-extrusion composite packaging bag according to any one of claims 1-3, wherein the air cylinder push rod (3) is a double-shaft push rod.

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