Mechanism for attaching cup holder to square bottom paper bag and bag making machine

Abstract

The utility model relates to the field of bag making machine discloses square bottom paper bag's paste cup holder mechanism and bag making machine, square bottom paper bag's paste cup holder mechanism includes mounting seat, is provided with the paper material conveying platform of being used for continuously conveying paper material of continuous volume on mounting seat, gumming device, paste card device, cup holder feeding device, link conveying device. The gumming device is at least used for gumming the paste cup holder part of continuous conveying paper material, the paste card device is located above the paper material conveying platform, and the paste card device sets up downstream of the gumming device, and the paste card device includes paste card push block, and the paste card push block is connected with paste card power source, and the paste card power source drives paste card push block to push cup holder to enter paste cup holder station obliquely downward, and the movement speed of paste card push block is faster than the conveying speed of paper material on paper material conveying platform. The utility model solves the problem that the cup holder needs artificial completion in the heat preservation paper bag making machine, and directly paste cup holder on the continuous conveying paper material in the process integrated in the bag making machine, and the working efficiency of paste cup holder is improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of bag making machines, and in particular to a cup holder attaching mechanism for square-bottom paper bags and the bag making machine thereof. Background Technology

[0002] In paper bag production, the cup holder needs to be manually attached to the bag after the bag body is processed. This manual attachment is inefficient, inconsistent, and prone to misalignment. Furthermore, traditional methods use double-sided adhesive tape to attach the cup holder and release paper to the sealing area. However, these materials are expensive, and the process is complex, increasing production costs. Therefore, there is an urgent need for a simplified, low-cost cup holder attachment mechanism to improve bag-making efficiency and reliability. Summary of the Invention

[0003] This utility model addresses the shortcomings of existing technologies by providing a cup holder attaching mechanism for square-bottomed paper bags and its bag making machine.

[0004] To solve the above-mentioned technical problems, this utility model achieves its solution through the following technical solution: The cup holder attachment mechanism for square-bottomed paper bags includes a mounting base, on which is provided a paper material conveying platform for continuously conveying rolled paper material, an adhesive applicator, a card attaching device, a cup holder feeding device, and a connecting conveyor device.

[0005] A cup holder attachment station is set up along the conveying path of the paper material conveying platform. An adhesive applicator is used at least to apply adhesive to the cup holder area of ​​the continuously conveyed paper material. A card-attaching device is located above the paper material conveying platform and downstream of the adhesive applicator. The card-attaching device includes a card-attaching pusher block connected to a card-attaching power source. The power source drives the pusher block to push the cup holder diagonally downwards into the cup holder attachment station. The pusher block moves faster than the paper material conveying speed on the conveying platform.

[0006] The cup holder feeding device is used to deliver cup holders from the cup holder hopper; the connecting conveyor device is used to receive the cup holders output from the output end of the cup holder feeding device and transfer them to the input end of the card-attaching device. The cup holders impact the paper material at a high speed at an inclined angle, and the inertial force is used to achieve adhesion between the cup holders and the paper material, which are conveyed in the same direction.

[0007] Preferably, the cup holder feeding device is provided with one or more sets, including a conveyor belt located above the cup holder. The conveyor belt above the cup holder is provided with suction holes. The suction holes are connected to a negative pressure source for adsorbing the cup holder to the top of the connecting conveyor device. After reaching the connecting conveyor device, the negative pressure source is turned off to make the cup holder fall.

[0008] Preferably, the cup holder feeding device includes upper and lower conveyor belts. After the upper and lower conveyor belts clamp the cup holder, the cup holder is absorbed and transported by the upper conveyor belt.

[0009] Preferably, the conveyor belts of each cup holder feeding device are positioned on both sides perpendicular to the cup holder conveying direction, with a space formed between the two conveyor belts to avoid the central hollow part of the cup holder. The hollow part would cause the conveyor belt to suck in air, which is easy to damage during conveying. Therefore, this part is avoided, and the cup holder is conveyed by clamping or suction on both sides of the flat cup holder.

[0010] Preferably, the card-attaching pusher is mounted on the card-attaching belt. The movement of the card-attaching belt drives the card-attaching pusher. The contact surface between the card-attaching belt and the cup holder forms an angle with the paper conveying platform, and the conveying speed of the card-attaching belt is greater than that of the paper conveying platform. The card-attaching pusher is more suitable for smooth cup holder surfaces than friction conveying, preventing slippage and thus avoiding defective products.

[0011] Preferably, the connecting conveyor includes a mounting bracket, with a channel for paper material to pass through formed below the mounting bracket. The connecting conveyor includes a conveying carrier with spaced-apart pushers on it. A suction conveyor belt and the pushers on the conveying carrier cooperate; the suction conveyor belt picks up the cup holder and conveys it to a designated position, after which a synchronous belt and a protrusion device push the cup holder forward to the adhesive spraying position on the paper material for bonding. The conveying carrier is a common device in the art, such as a conveyor chain or conveyor belt, capable of supporting the cup holder and conveying it forward, realizing the transition from conveying to bonding. The synchronous belt and the conveying carrier can be connected in the same direction or at an angle, such as when their conveying directions are perpendicular to each other.

[0012] Preferably, the mounting base is also equipped with a double-sided adhesive applicator, which includes a film roll, a cutter, and a pressure roller. The gluing device applies adhesive to at least the areas on the paper material where double-sided adhesive is applied and the cup holder area. The double-sided adhesive applicator is located downstream of the gluing device. The film roll of the double-sided adhesive applicator provides pearlescent film rolls, release paper, etc. The cutter cuts the pearlescent film into predetermined lengths, and the pressing device presses the cut pearlescent film segments onto the adhesive spraying positions on the paper material. The adhesive spraying device sprays adhesive in two sections: a first section for applying double-sided adhesive and a second section for applying the cup holder. The adhesive is sprayed directly onto the surface of the paper material. This solves the problems of high cost, low efficiency, and weak adhesion associated with traditional double-sided adhesive application processes.

[0013] Preferably, a flattening roller is provided downstream of the card-applying device to cooperate with the paper material conveying platform.

[0014] The bag-making machine includes a cup holder mechanism for square-bottom paper bags, and a conveyor line for continuously conveying paper material, wherein the conveyor line is sequentially arranged along the paper material's travel direction with: Paper roll unloading mechanism, used to release and tension paper roll raw materials; A bag mouth pre-cutting mechanism, comprising a pre-cutting blade for forming a bag mouth cutting line with a concave and a convex portion on the paper material; A tube-folding accordion edge mechanism is used to fold paper into a tube shape and form a double-sided accordion edge structure, including a single-sided tube-folding guide and accordion edge folding wheels on both sides; The bag-breaking mechanism is used to separate a continuous paper tube into individual high and low bag bodies along the bag opening cutting line. The bag-breaking mechanism includes a high-speed conveyor roller and a low-speed conveyor roller. The high-speed conveyor roller and the low-speed conveyor roller drive the front and rear bag bodies to separate due to speed difference. The bag bottom cleaning mechanism is used to remove excess waste from the bottom of the bag to make the bottom of the bag flat. It includes a cutter, and a waste adsorption chamber is set below the cutter. The waste adsorption chamber is connected to a negative pressure source. A square bottom forming mechanism is used to fold and glue the bottom of the bag to form a sealed square bottom; The cup holder attaching mechanism for the square-bottomed paper bag is located upstream of the tube forming accordion edge folding mechanism and downstream of the paper roll feeding mechanism.

[0015] Preferably, the device also includes a strap attaching mechanism, the strap attaching position of which corresponds to any position after the bag opening pre-cutting mechanism on the conveyor line.

[0016] This invention, by adopting the above technical solutions, has significant technical advantages: it solves the problem of manually attaching cup holders in insulated paper bag making machines, allowing cup holders to be directly attached to the continuously conveyed paper material during the bag making process, greatly improving the efficiency of cup holder attachment and saving equipment and labor costs. Furthermore, this invention provides precise positioning of the cup holders during conveying, preventing them from detaching, and ensures accurate placement when attached to the paper material.

[0017] Furthermore, when applying double-sided tape for sealing or header cards, spray adhesive is used instead of pre-adhesive material, directly reducing material costs. The system integrates spray adhesive, film cutting, conveying, and compaction, enabling continuous automated production and simplifying the process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cup holder mechanism of the square-bottom paper bag of this utility model; Figure 2 This is a schematic diagram of the cup holder mechanism of a square-bottomed paper bag from another angle. Figure 3 This is a schematic diagram of the cup holder feeding device; Figure 4 This is a structural diagram of the connecting conveyor and the card-attaching device; Figure 5 This is a structural diagram of a bag-making machine; Figure 6 This is a top view of the bag-making machine.

[0019] The parts referred to by the numbers in the above attached diagrams are as follows: 910, Mounting base; 920, Paper material conveying platform; 930, Gluing device; 940, Card pasting device; 941, Card pasting pusher block; 942, Card pasting power source; 943, Card pasting belt; 944, Flattening roller; 950, Cup holder feeding device; 951, Conveyor belt; 952, Air suction hole; 960, Connecting conveyor device; 961, Mounting bracket; 962, Conveying carrier; 963, Pusher block; 970, Double-sided adhesive applicator; 9 71. Film roll; 972. Cutter; 973. Pressure roller; 100. Conveyor line; 200. Paper roll feeding mechanism; 300. Bag opening pre-cutting mechanism; 310. Pre-cutting piercing; 400. Tube forming and accordion edge folding mechanism; 410. Single-sided tube folding guide; 420. Accordion edge folding wheel; 500. Bag cutting mechanism; 510. Low-speed conveyor roller; 520. High-speed conveyor roller; 600. Bag bottom waste removal mechanism; 700. Square bottom forming mechanism; 800. Strap attaching mechanism; 900. Cup holder attaching mechanism for square bottom paper bags. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0021] The cup holder mechanism of the square-bottomed paper bag, such as Figure 1-4 As shown, it includes a mounting base 910, on which a paper material conveying platform 920 for continuously conveying rolled paper material is provided, an adhesive applicator 930, a card attaching device 940, a cup holder feeding device 950, and a connecting conveyor device 960.

[0022] A cup holder attachment station is provided on the conveying path of the paper material conveying platform 920. A gluing device 930 is used at least for gluing the cup holder area of ​​the continuously conveyed paper material. A card attaching device 940 is located above the paper material conveying platform 920 and downstream of the gluing device 930. The card attaching device 940 includes a card attaching push block 941, which is connected to a card attaching power source 942. The card attaching power source 942 drives the card attaching push block 941 to push the cup holder diagonally downwards into the cup holder attachment station. The movement speed of the card attaching push block 941 is faster than the conveying speed of the paper material on the paper material conveying platform 920.

[0023] The cup holder feeding device 950 is used to feed the cup holders out of the cup holder hopper; the connecting conveyor device 960 is used to receive the cup holders output from the output end of the cup holder feeding device 950 and transfer them to the input end of the card attaching device 940.

[0024] The cup holder feeding device 950 is provided with one or more sets. The cup holder feeding device 950 includes a conveyor belt 951 located above the cup holder. The conveyor belt 951 above the cup holder is provided with a suction hole 952. The suction hole 952 is connected to a negative pressure source for adsorbing the cup holder to the top of the connecting conveyor device 960. After reaching the connecting conveyor device 960, the negative pressure source is turned off, causing the cup holder to fall.

[0025] The cup holder feeding device 950 includes a conveyor belt 951 arranged vertically. After the conveyor belt 951 clamps the cup holder, the cup holder is absorbed and transported by the conveyor belt 951 above the cup holder.

[0026] The conveyor belts 951 of each cup holder feeding device 950 are arranged on both sides perpendicular to the cup holder conveying direction, and a space is formed between the two conveyor belts 951 to avoid the central hollow part of the cup holder.

[0027] The card-attaching pusher 941 is mounted on the card-attaching belt 943. The movement of the card-attaching belt 943 drives the card-attaching pusher 941 to move. The contact surface between the card-attaching belt 943 and the cup holder has an angle with the paper material conveying platform 920, and the conveying speed of the card-attaching belt 943 is greater than the conveying speed of the paper material conveying platform 920.

[0028] The connecting conveyor 960 includes a mounting bracket 961, with a channel for paper material to pass through formed below the mounting bracket 961. The connecting conveyor 960 includes a conveying carrier 962, on which push blocks 963 are arranged at intervals.

[0029] The mounting base 910 is also equipped with a double-sided adhesive applicator 970, which includes a film roll 971, a cutter 972, and a pressure roller 973. The gluing device 930 applies adhesive to at least the areas where double-sided adhesive is applied to the paper material and the cup holder area. The double-sided adhesive applicator 970 is located downstream of the gluing device 930. The film roll of the release liner applicator is a barrel-shaped film roll structure. The cutter cuts the film during the film roll conveying process, and the pressing device is aligned with the adhesive spraying position on the paper material travel path.

[0030] Downstream of the card-applying device 940 is a flattening roller 944 that works in conjunction with a paper material conveying platform 920.

[0031] Working principle: The glue spraying device directly sprays glue onto the surface of the moving paper material, preparing for the subsequent application of cup holders. The cup holder feeding device 950 clamps the cup holders via the upper and lower conveyor belts 951, and then the upper conveyor belt uses negative pressure to transfer them to the connecting conveyor device 960; the paper material below continues to be conveyed. The push block 963 of the connecting device pushes the cup holders into the input end of the card-applying device 940. The card-applying belt 943 drives the push block 941 to apply the card at an angle downwards at a speed greater than that of the paper material, pressing the cup holders into the pre-applied glued positions on the paper material. After bonding, the conveyor platform continues to convey the paper material downstream, where it is pressed again by the flattening roller 944, making the cup holders bond even more tightly.

[0032] If a double-sided tape application process is required, the adhesive can be applied in the glue spraying device, saving equipment costs and improving processing efficiency. The double-sided tape application device 970 is installed upstream or downstream of the cup holder application mechanism. The film roll is driven by the rotation of the conveyor rollers, and the cutter, located downstream of the film roll, cuts the roll into predetermined lengths. The cutter's movement is synchronized with the paper material's movement, ensuring that the cut film segments are precisely applied to the adhesive-coated areas. The pressure roller 973 presses the film roll and adhesive together. After pressing, the film roll becomes easy to peel off.

[0033] After the cup holder is attached to the bag, since one side of the cup holder contacts the inner surface of one side of the bag, it can be used by simply flipping it up or down so that the plane with the central cutout of the cup holder is parallel to the bottom of the bag, and the other side of the cup holder abuts against the inner surface of the other side of the bag. Example

[0034] Bag making machine, such as Figure 5-6 As shown, the device includes a cup holder mechanism 900 for attaching square-bottomed paper bags, and a conveyor line 100 for continuously conveying paper material. The conveyor line 100 is provided with the following components sequentially along the paper material's travel direction: Paper roll unloading mechanism 200 is used to release and tension paper roll raw material; The bag opening pre-cutting mechanism 300 includes a pre-cutting barb 310 for forming a bag opening cut line with a concave and a convex portion on the paper material; The tube folding accordion edge mechanism 400 is used to fold paper into a tube shape and form a double-sided accordion edge structure, including a single-sided tube folding guide 410 and accordion edge folding wheels 420 on both sides. The bag-breaking mechanism 500 is used to separate a continuous paper tube into individual high and low bag bodies along the bag opening cutting line. The bag-breaking mechanism 500 includes a high-speed conveying roller 520 and a low-speed conveying roller 510. The high-speed conveying roller 520 and the low-speed conveying roller 510 drive the front and rear bag bodies to separate due to speed difference. The bag bottom cleaning mechanism 600 is used to remove excess waste from the bottom of the bag body to make the bottom of the bag flat. It includes a second cutter and a waste adsorption chamber is provided below the second cutter. The waste adsorption chamber is connected to a negative pressure source. The square bottom forming mechanism 700 is used to fold and glue the bottom of the bag to form a sealed square bottom; The cup holder applicator for the square-bottomed paper bag is located upstream of the tube-forming accordion edge folding mechanism 400 and downstream of the paper roll feeding mechanism 200. This allows for applicator bonding to be completed on the flat surface of the paper before it is folded, avoiding positioning deviations caused by three-dimensional operations.

[0035] It also includes a tape attaching mechanism 800, whose tape attaching position corresponds to any position after the bag opening pre-cutting mechanism 300 on the conveyor line 100.

[0036] Working principle: The paper roll is unwound at the paper roll unwinding mechanism 200. The preceding continuous paper material is conveyed forward by the conveying rollers of the conveyor line 100. After passing through steps such as correction, it enters the cup holder mechanism 900 of the square bottom paper bag and then enters the bag opening pre-cutting mechanism 300. The positions of the cup holder mechanism 900 and the bag opening pre-cutting mechanism 300 can be interchanged. The pre-cutting blade 310 is mounted on a roller connected to a rotating power source. Its rotation forms a bag opening cut line. The protruding part of the bag opening at the previous cut line becomes the concave part of the bag bottom at the next bag. Meanwhile, the continuously fed paper material enters the tube-forming accordion edge mechanism 400, where one side of the bag folds to the other, forming an accordion edge under the action of the accordion edge folding wheels 420 on both sides. Simultaneously, due to the previous gluing, the sides overlap and adhere together. The subsequent continuous cylindrical bags are flattened and enter the bag-cutting mechanism 500. The high-speed conveying roller 520 at the front presses down on and carries the previous bag, while the low-speed conveying roller 510 at the rear presses down on and drives the next bag. A speed difference is generated between each pair of bags to achieve separation. At this point, the bag opening is complete, and the bag bottom is then processed. The bag then enters the bag bottom waste removal mechanism 600, where the bottom is flattened by the cutter. Excess waste enters the waste adsorption chamber, is sucked out by the negative pressure source, and processed separately. The bag body then enters the square bottom forming mechanism 700 for creasing, bottom opening, and bag folding operations, finally exiting to obtain a complete bag body. If there is a tape applicator 800 or / and a double-sided adhesive applicator, simply feed the material to be pasted perpendicular to the conveyor line 100, and the material can be periodically pasted onto the bag opening by a robotic arm or pressing mechanism.

[0037] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A cup holder mechanism for a square-bottomed paper bag, characterized in that, Includes a mounting base (910), on which are provided a Paper material conveying platform (920) is used for continuous conveying of rolled paper material. The conveying path of the paper material conveying platform (920) is equipped with a cup-sticking station. The gluing device (930) is used at least for gluing the cup holder part of the continuously conveyed paper material; The card-applying device (940) is located above the paper material conveying platform (920) and downstream of the gluing device (930). The card-applying device (940) includes a card-applying push block (941), which is connected to a card-applying power source (942). The card-applying power source (942) drives the card-applying push block (941) to push the cup holder diagonally downward into the cup holder station. The movement speed of the card-applying push block (941) is faster than the conveying speed of the paper material on the paper material conveying platform (920). The cup holder feeding device (950) is used to feed the cup holders out of the cup holder hopper; A connecting conveyor (960) is used to receive the cup trays output from the output end of the cup tray feeding device (950) and transfer them to the input end of the card attaching device (940).

2. The cup holder mechanism for a square-bottomed paper bag according to claim 1, characterized in that: The cup holder feeding device (950) is provided with one or more sets. The cup holder feeding device (950) includes a conveyor belt (951) located above the cup holder. The conveyor belt (951) above the cup holder is provided with a suction hole (952). The suction hole (952) is connected to a negative pressure source for adsorbing the cup holder to the top of the connecting conveyor device (960). After reaching the connecting conveyor device (960), the negative pressure source is turned off to make the cup holder fall.

3. The cup holder mechanism for a square-bottomed paper bag according to claim 2, characterized in that: The cup holder feeding device (950) includes a conveyor belt (951) arranged vertically. After the upper and lower conveyor belt (951) clamps the cup holder, the cup holder is adsorbed and transported by the conveyor belt (951) above the cup holder.

4. The cup holder mechanism for a square-bottomed paper bag according to claim 2 or 3, characterized in that: The conveyor belts (951) of each cup holder feeding device (950) are arranged on both sides perpendicular to the cup holder conveying direction, and a space is formed between the two conveyor belts (951) to avoid the central hollow part of the cup holder.

5. The cup holder mechanism for a square-bottomed paper bag according to claim 1, characterized in that: The card-attaching pusher (941) is set on the card-attaching belt (943). The movement of the card-attaching belt (943) drives the card-attaching pusher (941) to move. The contact surface between the card-attaching belt (943) and the cup holder has an angle with the paper material conveying platform (920), and the conveying speed of the card-attaching belt (943) is greater than the conveying speed of the paper material conveying platform (920).

6. The cup holder mechanism for a square-bottomed paper bag according to claim 1, characterized in that: The connecting conveyor (960) includes a mounting bracket (961), and a channel for feeding paper is formed below the mounting bracket (961). The connecting conveyor (960) includes a conveying carrier (962), and push blocks (963) are provided on the conveying carrier (962) at intervals.

7. The cup holder mechanism for a square-bottomed paper bag according to claim 1, characterized in that: The mounting base (910) is also equipped with a double-sided tape applicator (970), which includes a roll of film (971), a cutter (972), and a pressure roller (973). The gluing device (930) applies glue to at least the paper material and the cup holder area. The double-sided tape applicator (970) is located downstream of the gluing device (930).

8. The cup holder mechanism for a square-bottomed paper bag according to claim 7, characterized in that: Downstream of the card-applying device (940) is a flattening roller (944) that works in conjunction with the paper material conveying platform (920).

9. A bag-making machine, characterized in that: The cup holder mechanism (900) for square-bottomed paper bags according to any one of claims 1-8 further includes a conveyor line (100) for continuously conveying paper material, wherein the conveyor line (100) is provided with the following components sequentially along the paper material travel direction: Paper roll unloading mechanism (200) is used to release and tension paper roll raw material; The bag opening pre-cutting mechanism (300) includes a pre-cutting dagger (310) for forming a bag opening cut line with a concave and a convex portion on the paper stock; The tube folding accordion edge mechanism (400) is used to fold paper into a tube shape and form a double-sided accordion edge structure, including a single-sided tube folding guide (410) and accordion edge folding wheels (420) on both sides. The bag-breaking mechanism (500) is used to separate the continuous paper tube into individual high and low bag bodies along the bag opening cutting line. The bag-breaking mechanism (500) includes a high-speed conveying roller (520) and a low-speed conveying roller (510). The high-speed conveying roller (520) and the low-speed conveying roller (510) drive the front and rear bag bodies to generate speed difference separation. The bag bottom cleaning mechanism (600) is used to remove excess waste from the bottom of the bag body to make the bottom of the bag flat. It includes a second cutter and a waste adsorption chamber is provided below the second cutter. The waste adsorption chamber is connected to a negative pressure source. A square bottom forming mechanism (700) is used to fold and glue the bottom of the bag to form a sealed square bottom; The cup holder attaching mechanism (900) for square-bottomed paper bags is located upstream of the tube forming accordion edge folding mechanism (400) and downstream of the paper roll feeding mechanism (200).

10. The bag-making machine according to claim 9, characterized in that: It also includes a tape attaching mechanism (800), the tape attaching position of which corresponds to any position after the bag opening pre-cutting mechanism (300) on the conveyor line (100).

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