Double-bottom-folding forming mechanism of bag making machine

Abstract

The utility model discloses a double bottom folding forming mechanism of a bag making machine, which is characterized in that a gluing component and a first bottom folding component are sequentially arranged corresponding to the discharging end of a feeding conveying belt group, a second bottom folding component is arranged on one side of the first bottom folding component, and a middle conveying belt group is arranged between the first bottom folding component and the second bottom folding component; a discharging conveying belt set is arranged at the discharging end of the second bottom folding assembly, the first bottom folding assembly comprises a first rolling wheel, a bottom folding cutter is arranged on the first rolling wheel, a second rolling wheel is arranged below the first rolling wheel correspondingly, an inserting groove is formed in the second rolling wheel, a clamping plate is arranged in the inserting groove, and the clamping plate is connected to a swing arm. The swing arm is movably arranged on the second roller and connected with the elastic piece, and a guide block capable of being in extrusion contact with the swing arm is arranged corresponding to the rotating path of the second roller. The bag bottom folding device is simple in overall structure, secondary bottom folding operation can be achieved, and the strength of the bag bottom is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bag making machine, specifically to a double bottom forming mechanism of bag making machine. BACKGROUND

[0002] The bag making machine is a special equipment for automatic forming of packaging bags. In order to improve the strength of the bottom of the bag body, a kind of packaging bag, especially paper bag, needs to be folded bottom in the production process. The traditional bottom folding mechanism generally only performs one bottom folding operation. In actual use, there is still a situation of insufficient strength of the bottom of the bag, which affects the normal use of the packaging bag. In addition, after the bottom of the packaging bag is folded and bonded, the folding part of the bottom of the bag may be affected by the elasticity of the bag body during conveying, resulting in the unfolding of the folding part of the bottom of the bag, which affects the forming quality of the bottom of the bag. SUMMARY

[0003] In view of the deficiencies of the background art, the technical problem to be solved by the utility model is to provide a double bottom forming mechanism of bag making machine for solving the above problems.

[0004] To this end, the utility model is realized by adopting the following scheme:

[0005] A double bottom forming mechanism of bag making machine, characterized by comprising a feeding conveyor belt group, an adhesive assembly and a first bottom folding assembly are sequentially arranged at the discharge end corresponding to the feeding conveyor belt group, a second bottom folding assembly is arranged on one side of the first bottom folding assembly, an intermediate conveyor belt group is arranged between the first and second bottom folding assemblies, a discharge conveyor belt group is arranged at the discharge end of the second bottom folding assembly, a transfer conveyor belt group is arranged at the discharge end corresponding to the discharge conveyor belt group, and a stacking rack is arranged at the discharge end corresponding to the transfer conveyor belt group.

[0006] The first bottom folding assembly comprises a first roller, a bottom folding knife is arranged on the first roller, a second roller is arranged below the first roller, a slot is arranged on the second roller, a clamping plate is arranged in the slot, the clamping plate is connected to a swing arm, the swing arm is movably arranged on the second roller, an elastic return member is arranged corresponding to the swing arm, and a guide member that can be pressed and contacted with the swing arm is arranged on the rotation path of the second roller.

[0007] A first pressure roller is arranged on the swing arm, and the guide member is a second pressure roller that can be contacted with the first pressure roller.

[0008] The intermediate conveying belt group comprises a first intermediate conveying belt and a second intermediate conveying belt arranged in cooperation, the bag body is compressed between the first and second intermediate conveying belts for conveying, the discharge conveying belt group comprises a first discharge conveying belt and a second discharge conveying belt arranged in cooperation, the bag body is compressed between the first and second discharge conveying belts for conveying, and the transfer conveying belt group comprises a first transfer conveying belt and a second transfer conveying belt arranged in cooperation, and the bag body is compressed between the first and second transfer conveying belts for conveying.

[0009] The second bottom folding assembly has the same structure as the first bottom folding assembly.

[0010] The double bottom forming mechanism of the bag making machine can realize the secondary bottom folding operation of the packaging bag through the first and second bottom folding assemblies, and the strength of the bottom of the packaging bag after the secondary bottom folding is significantly enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model has the following drawings:

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is Figure 1 It is a local enlarged view of the direction of A in the middle;

[0014] Figure 3 It is Figure 1 It is a local enlarged view of the direction of B in the middle;

[0015] Figure 4 It is Figure 1 It is a local enlarged view of the direction of C in the middle. DETAILED DESCRIPTION

[0016] As shown in the figure, the utility model discloses a double -folding bottom forming mechanism of bag making machine, including feeding conveyor belt group 1, the discharging end of feeding conveyor belt group 1 is sequentially provided with gluing assembly and first bottom folding assembly 2, wherein gluing assembly can be the glue spraying head of setting in the discharging end of feeding conveyor belt group 1, and the bag bottom part of the bag body sent is glued by glue spraying head and realizes gluing, of course, gluing piece can be set on the first roller 8, and gluing piece can be rotated to the rubber wheel and realizes gluing with the rotation of first roller 8, then rotates again and contacts the bag body conveyed, and the glue is transferred to the bag bottom part of bag body, and the two are the common gluing mode on the market, so the specific structure will not be described again, the second bottom folding assembly 3 is provided on the side of first bottom folding assembly 2, and the intermediate conveyor belt group is provided between first and second bottom folding assembly, and the discharging end of second bottom folding assembly 3 is provided with discharging conveyor belt group, and the discharging end of discharging conveyor belt group is provided with transfer conveyor belt group, and the discharging end of transfer conveyor belt group is provided with stacking rack 4.

[0017] Further, the first bottom folding assembly includes a first roller 8, the first roller 8 is provided with a bottom folding knife 7, a second roller 5 is provided below the first roller 8, the second roller 5 is provided with a slot 10, the slot 10 is provided with a clamping plate 11, the clamping plate 11 is connected to a swing arm 12, the swing arm 12 is movably arranged on the second roller 5, a resilient return member is provided corresponding to the swing arm 12, in the embodiment, one end of the swing arm 12 is movably arranged on a support shaft and is elastically compressed by a spring 19, of course, one end of the swing arm 12 can be hinged to the second roller 5, and a torsional spring is arranged at the hinge to elastically swing the swing arm 12, a guide member is arranged on the rotating path of the second roller, which can be in extrusion contact with the swing arm 12. A first pressure roller 9 is arranged on the swing arm 12, and the guide member is a second pressure roller 6 that can cooperate with the first pressure roller 9 to make the extrusion contact between the swing arm 12 and the guide member more smooth.

[0018] Further, the intermediate conveyor belt group includes a first intermediate conveyor belt 13 and a second intermediate conveyor belt 14 arranged in cooperation, the bag body is compressed between the first and second intermediate conveyor belts for conveying, the discharging conveyor belt group includes a first discharging conveyor belt 15 and a second discharging conveyor belt 16 arranged in cooperation, the bag body is compressed between the first and second discharging conveyor belts for conveying, and the transfer conveyor belt group includes a first transfer conveyor belt 17 and a second transfer conveyor belt 18 arranged in cooperation, the bag body is compressed between the first and second transfer conveyor belts for conveying. With the above structure, the compression and positioning of the bag bottom after the completion of the bottom folding operation can be effectively guaranteed, avoiding the situation that the folded part of the bag bottom is popped open, thereby ensuring the stability of the bag bottom forming.

[0019] In the embodiment, the structure of the second bottom folding assembly is the same as that of the first bottom folding assembly, so the specific structure of the second bottom folding assembly will not be described again.

[0020] The working principle of the utility model is: the packaging bag is first conveyed through the feeding conveying belt group 1, when the packaging bag is sent out, the gluing assembly first glues the bag bottom position, and the packaging bag is sent to the second roller 5 of the first bottom folding assembly, and at this time the first pressure roller 9 of the swing arm 12 on the second roller 5 is in contact with the second pressure roller 6 and is extruded, which drives the swing arm 12 to swing, so that the clamping plate 11 swings, and the first roller 8 rotates, so that the bottom folding knife 7 extrudes the bag bottom of the packaging bag, so that the bag bottom is folded and inserted into the insertion slot 10, with the continuous rotation of the first and second rollers, the bottom folding knife 7 is separated from the insertion slot 10, and the first and second pressure rollers are separated, the elastic reset member drives the swing arm 12 to reset, so that the clamping plate 11 acts to clamp the bag bottom in the insertion slot 10 in the packaging bag, and because the bag bottom has been glued, the folded bag bottom part can be bonded together, completing the first bottom folding operation, then the packaging bag is sent to the first and second intermediate conveying belts, and the swing arm 12 is extruded by another second pressure roller 6, so that the clamping plate 11 releases the packaging bag, the packaging bag after the first bottom folding is pressed by the first and second intermediate conveying belts and is sent to the second bottom folding assembly, the working principle of the second bottom folding assembly is the same as that of the first bottom folding assembly, so it will not be repeated, and after the second bottom folding of the packaging bag is completed, it is conveyed outward by the first and second discharge conveying belts, and finally it is pressed and sent to the stacking rack 4 by the first and second transfer conveying belts and is stacked and collected.

[0021] The utility model discloses this structure, through setting first, second bottom folding assembly, can realize the twice bottom folding operation of packaging bag, and the bottom strength of packaging bag after twice bottom folding is significantly enhanced, in addition, each conveying belt group all adopts two conveying belts and conveys the packaging bag after bottom folding, can effectively guarantee the bottom of packaging bag after completing bottom folding operation and is pressed and positioned, avoids the situation that the folded part of bag bottom opens, and further guarantees the stability of bag bottom forming.

Claims

1. A double-fold bottom forming mechanism for a bag making machine, characterized by: The invention comprises a feed conveyor belt group (1), a gluing component and a first bottom folding component (2) are sequentially arranged at the discharge end of the corresponding feed conveyor belt group (1), a second bottom folding component (3) is arranged on one side of the first bottom folding component (2), an intermediate conveyor belt group is arranged between the first and second bottom folding components, a discharge conveyor belt group is arranged at the discharge end of the second bottom folding component (3), a transfer conveyor belt group is arranged at the discharge end of the corresponding discharge conveyor belt group, and a stacking rack (4) is arranged at the discharge end of the transfer conveyor belt group.

2. The double-fold bottom forming mechanism of a bag making machine according to claim 1, characterized in that: The first folding bottom assembly includes a first roller (8), a folding bottom knife (7) is provided on the first roller (8), a second roller (5) is provided below the first roller (8), a slot (10) is provided on the second roller (5), a clamping plate (11) is provided in the slot (10), the clamping plate (11) is connected to a swing arm (12), the swing arm (12) is movably provided on the second roller (5), an elastic reset member is provided corresponding to the swing arm (12), and a guide member that can be squeezed and contacted with the swing arm (12) is provided in the rotation path of the second roller.

3. The double-fold bottom forming mechanism of a bag making machine according to claim 2, characterized in that: A first pressing wheel (9) is provided on the swing arm (12), and the guide member is a second pressing wheel (6) capable of cooperating with and contacting the first pressing wheel (9).

4. The double-fold bottom forming mechanism of a bag making machine according to claim 1, characterized in that: The intermediate conveyor belt group includes a first intermediate conveyor belt (13) and a second intermediate conveyor belt (14) that are arranged in conjunction with each other, and the bag body is pressed between the first and second intermediate conveyor belts for transportation. The discharge conveyor belt group includes a first discharge conveyor belt (15) and a second discharge conveyor belt (16) that are arranged in conjunction with each other, and the bag body is pressed between the first and second discharge conveyor belts for transportation. The transfer conveyor belt group includes a first transfer conveyor belt (17) and a second transfer conveyor belt (18) that are arranged in conjunction with each other, and the bag body is pressed between the first and second transfer conveyor belts for transportation.

5. The double-fold bottom forming mechanism of a bag making machine according to claim 1, characterized in that: The structure of the second folding bottom assembly is the same as that of the first folding bottom assembly.

Images