A packaging bag conveying device

Abstract

The application relates to the technical field of bag conveying, and discloses a packaging bag conveying device, the spacing between an adjusting roller and a rotating roller three is controlled through an adjusting assembly, in the state that the terminal position of the rotating roller three is not changed, the packaging bag can be controlled to be lifted after conveying through the position of the adjusting roller, the next heat cutting work of a heat cutting component on a packaging bag roll is carried out, the packaging bag does not need to walk through the whole arm length of the swing arm, the conveying time of the packaging bag under the swing arm and the cooperation period of the lifting action of the swing arm are optimized, the conveying efficiency of the packaging bag in the area under the swing arm is improved, the production efficiency of the packaging bag is further improved, meanwhile, the packaging bags of different lengths and models can all obtain adaptive conveying paths, and the efficiency loss caused by the fixed arm length is avoided. The problem that the conveying path length of the swing arm clamping is fixed in the existing conveying device, the packaging bag still needs to walk through the whole arm length distance when short bags are processed, and the heat cutting machine efficiency is limited when the short bags are processed is solved.

Description

Technical Field

[0001] This invention relates to the field of bag conveying technology, specifically to a packaging bag conveying device. Background Technology

[0002] Packaging bags, as the outer packaging of finished products, are widely used in food processing, agricultural products, materials, and parts manufacturing. During packaging bag production, after one side is sealed by a heat-sealing machine, the bags need to be promptly moved away by a conveyor system to avoid stacking.

[0003] like Figure 1 , Figure 2 As shown, the existing conveying device includes: an upper clamping conveyor mechanism (with a swing arm) that moves synchronously with the hot-cutting components of the hot-cutting machine, and a lower clamping conveyor mechanism fixedly mounted below. After the swing arm presses down, it works in conjunction with the lower clamping conveyor mechanism to clamp the lighter packaging bag and convey it at high speed.

[0004] The operation of the swing arm requires two timing conditions: first, it must press down to clamp the packaging bag; second, it must ensure that the packaging bag is completely conveyed out of the clamping area before rising with the heat-cutting component for the next operation. If the packaging bag rises prematurely before it is completely conveyed out, it will cause clamping failure, resulting in unstable conveying or even wrinkles. Therefore, the arm length of the swing arm must be greater than the length of the packaging bag, and its undulation cycle directly restricts the bag-making efficiency of the heat-cutting machine.

[0005] However, since the path length of the swing arm clamping and conveying is fixed, when processing short bags, the packaging bag still needs to travel the entire arm length before the next action can be performed. This results in the conveying efficiency not being able to be flexibly adjusted according to the bag length, which limits the improvement of the efficiency of the hot cutting machine when processing short bags. Summary of the Invention

[0006] The purpose of this invention is to provide a packaging bag conveying device that solves the problem that in existing conveying devices, the length of the swing arm clamping and conveying path is fixed, and when processing short bags, the packaging bag still needs to travel the entire arm length before the next action can be performed, which makes it impossible to flexibly adjust the conveying efficiency according to the bag length, thus limiting the improvement of the efficiency of the hot cutting machine when processing short bags.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a packaging bag conveying device, comprising: a pair of side plates, and a lower clamping conveyor mechanism, wherein the lower clamping conveyor mechanism comprises a pair of rotating rollers rotatably mounted between the pair of side plates, and a plurality of conveyor belts are axially arranged between the pair of rotating rollers. The upper conveyor belt mechanism includes a rotating roller 2 and a clamping arm assembly assembled between a pair of side plates. Multiple conveyor belts 2 are disposed between the rotating roller 2 and the clamping arm assembly. The clamping arm assembly includes a swing arm rotatably assembled on one side of the side plate and a crossbeam rotatably assembled on the other side. A rotating roller 3 is disposed at one end of the swing arm. An adjusting roller is movably assembled on one side of the crossbeam, and an adjusting component for controlling the movement of the adjusting roller is provided. The conveyor belts 2 are sleeved on the surfaces of the rotating roller 2, the adjusting roller, and the rotating roller 3. The swing arm is in a flat state. The rotating roller 3, the adjusting roller, the conveyor belts 2, and the rotating roller 2 are on the same horizontal plane and can cooperate with the lower conveyor belt mechanism to convey the packaging bag. The preset distance between the adjusting roller and the rotating roller 3 corresponds to the length of the packaging bag. The tension assembly, located between a pair of side plates, is used to adaptively adjust the tension of the second conveyor belt during the rotation of the swing arm.

[0008] As a further description of the above technical solution: the surface of the crossbeam is provided with a sliding groove; The adjustment assembly includes a threaded rod that rotates on one side of the crossbeam and a slider that is slidably fitted inside the slide groove.

[0009] As a further description of the above technical solution: the slider is threadedly connected to the threaded rod, the threaded rod is fixedly fitted with a worm gear, the upper side of the worm gear is provided with a meshing worm, on a pair of side plates, the two worms are fixedly connected in series by a shaft, and one end of the shaft is provided with a servo motor to control its rotation, and the adjusting roller is rotatably assembled between the two sliders.

[0010] As a further description of the above technical solution: the lower side of the swing arm is provided with an opening, and the adjusting roller moves within the opening.

[0011] As a further description of the above technical solution: the middle part of the cross frame bends and protrudes towards the swing arm and can extend into the inside of the opening of the swing arm, and the adjustment component is assembled on the concave surface of the cross frame.

[0012] As a further description of the above technical solution: the tension assembly includes a top plate rotatably mounted on the surface of the side plate, an elastic member rotatably connected to the middle of the top plate, the lower end of the elastic member being rotatably connected to the side plate, and the top plate being elastically pushed by the elastic member, so that the top plate has an upward rotational elastic tendency away from the transmission rod end; On the pair of side plates, a rotating roller four and a tensioning roller are respectively rotatably mounted between the two top plates. A rotating roller five is rotatably mounted at the end of the two swing arms away from the rotating roller three. The upper part of the conveyor belt two is wrapped around the tensioning roller, the rotating roller four and the rotating roller five. The elastic member elastically pushes the top plate, so that the tensioning roller adaptably tightens the conveyor belt two.

[0013] As a further description of the above technical solution: the surfaces of the second and third rollers are provided with a plurality of positioning grooves, and the plurality of positioning grooves correspond one-to-one with the plurality of conveyor belts, and the depth of the positioning grooves is less than the thickness of the conveyor belts.

[0014] As a further description of the above technical solution: a coordinating component is provided at the end of the swing arm near the rotating roller three, and the coordinating component is fixedly connected to the hot cutting part of the hot cutting machine; The collaborative component includes a connecting seat one fixedly connected to the upper end of the swing arm, a connecting seat two connected to the upper side of the connecting seat one via a connector, a connecting rod fixedly disposed between the two adjusting components on the two swing arms, and the connector adaptively connecting the linear motion trajectory of the hot-cutting component with the arc-shaped motion trajectory of one end of the swing arm.

[0015] As a further description of the above technical solution: a drive system is mounted on the side of one of the side plates, the drive system being used to drive the second rotating roller and the first single rotating roller to rotate synchronously and at the same speed in opposite directions.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. By adjusting the distance between the adjusting roller and the third rotating roller, the distance is made slightly larger than the length of the corresponding packaging bag. Without changing the end position of the third rotating roller, the swing arm can be raised after the packaging bag has passed the position of the adjusting roller, so that the hot cutting component can perform the next hot cutting operation on the packaging bag roll. This ensures that the packaging bag does not need to travel the entire length of the swing arm, thereby optimizing the coordination cycle between the conveying time of the packaging bag under the swing arm and the lifting action of the swing arm, improving the conveying efficiency of the packaging bag in the area under the swing arm, further improving the production efficiency of the packaging bag, and ensuring that packaging bags of different lengths and models can obtain a suitable conveying path without efficiency loss due to a fixed arm length.

[0017] 2. The top plate in the tension assembly is pushed by the elastic element to make the tensioning roller adaptively tighten the second conveyor belt. This is to cope with the changes in tension of the second conveyor belt caused by the swinging action of the third roller at one end of the swing arm. This avoids the second conveyor belt from becoming loose or over-tensioned during the lifting and flattening of the swing arm, extends the service life of the second conveyor belt, and ensures the stability of the first and second conveyor belts in clamping and conveying the packaging bags. Attached Figure Description

[0018] Figure 1 A schematic diagram showing the existing conveying device and swing arm in a raised state; Figure 2 A schematic diagram showing the existing conveying device and swing arm in a depressed state; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4This is a schematic diagram of the lower and upper belt feeding mechanisms of the present invention. Figure 5 This is a schematic diagram of the tension assembly and clamping arm assembly of the present invention; Figure 6 This is a schematic diagram of the clamping arm assembly structure of the present invention; Figure 7 This is a schematic diagram of the tension assembly structure of the present invention; Figure 8 This is a schematic diagram of the collaborative component structure of the present invention; Figure 9 This is a schematic diagram of the upper clamping conveyor and clamping arm assembly of the present invention in a raised state.

[0019] In the diagram: 10. Lower belt feeding mechanism; 11. Rotary roller one; 12. Conveyor belt one; 20. Upper belt feeding mechanism; 21. Rotary roller two; 22. Conveyor belt two; 30. Tension assembly; 31. Top plate; 32. Elastic component; 33. Rotary roller four; 34. Tensioning roller; 40. Clamping arm assembly; 41. Swing arm; 42. Cross frame; 421. Slide groove; 43. Adjustment assembly; 431. Threaded rod; 432. Slider; 433. Worm gear; 434. Worm; 44. Adjustment roller; 45. Rotary roller three; 46. Rotary roller five; 50. Coordination assembly; 51. Connecting seat one; 52. Connecting piece; 53. Connecting seat two; 54. Connecting rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0022] Figure 1 , Figure 2The existing conveyor system for packaging bag production features a lower feeding mechanism 10 and an upper feeding mechanism 20, which clamp and convey the packaging bag between them. This allows even lightweight packaging bags to be conveyed at high speed. A lifting clamping arm assembly 40 is located on one side of the upper feeding mechanism 20, and the clamping arm assembly 40 operates synchronously with the hot-cutting component of the hot-cutting machine. The hot-cutting component of existing hot-cutting machines is typically driven by an electric cylinder, performing a reciprocating linear motion. When the rolled-up packaging roll passes under the hot-cutting component, it is hot-cut into individual packaging bags. The clamping arm assembly 40 works in conjunction with the hot-cutting component. As soon as an individual packaging bag is side-cut, the clamping arm assembly 40, in conjunction with the lower feeding mechanism 10, clamps it and quickly conveys it away.

[0023] Because the path length of the clamping arm assembly 40 for holding and conveying the packaging bag is fixed, when processing short bags, the packaging bag still needs to travel the entire arm length of the clamping arm assembly 40 before the next action can be performed. This results in the conveying efficiency not being able to be flexibly adjusted according to the bag length, limiting the efficiency of the heat cutting machine when processing short bags. To address this problem, the present invention provides the following device to solve the problem, as follows: Combination Figures 1 to 9 A packaging bag conveying device includes: a pair of side plates, the side plates being fixedly mounted on a machine tool; A lower belt feeding mechanism 10 and an upper belt feeding mechanism 20 are installed between the two side plates. The lower belt feeding mechanism 10 is located below the upper belt feeding mechanism 20. The lower belt feeding mechanism 10 includes rotating rollers 11 distributed at both ends of the side plates and rotatably installed. Multiple conveyor belts 12 are arranged axially between the two rotating rollers 11, and there is a gap between adjacent conveyor belts 12. The upper clamping conveyor mechanism 20 includes a rotating roller 21 mounted on one end of the side plate and a clamping arm assembly 40 mounted on the other end of the side plate. Multiple conveyor belts 22 are arranged between the rotating roller 21 and the clamping arm assembly 40. There are also gaps between adjacent conveyor belts 22. When the conveyor belts 12 and 22 clamp the packaging bag and drive it to move, the gaps between the conveyor belts 12 or 22 can be used to visually observe the movement of the packaging bag.

[0024] Furthermore, in combination Figure 5The clamping arm assembly 40 includes a swing arm 41 rotatably mounted on one side of the side plate and a crossbeam 42 fixedly mounted. A rotating roller 45 is rotatably mounted on one end of the swing arm 41. An adjusting roller 44 is movably mounted on one side of the crossbeam 42, and an adjusting assembly 43 controls the movement of the adjusting roller 44. The conveyor belt 22 is fitted on the surfaces of the rotating roller 21, the adjusting roller 44, and the rotating roller 35. The swing arm 41 is in a flat state. The rotating roller 35, the adjusting roller 44, the conveyor belt 22, and the rotating roller 21 are on the same horizontal plane and can cooperate with the lower clamping conveyor mechanism 10 to convey the packaging bag. The preset distance between the adjusting roller 44 and the rotating roller 35 corresponds to the length of the packaging bag. Combination Figure 9 In the figure, the dotted line represents the horizontal plane. To accommodate packaging bags of different lengths, the distance between the adjusting roller 44 and the rotating roller 3 45 is controlled by adjusting the adjusting component 43. When the swing arm 41 is in a horizontal state, the distance between the adjusting roller 44 and the rotating roller 3 45 is slightly greater than the length of the corresponding packaging bag. Thus, without changing the end position of the rotating roller 3 45, as long as the packaging bag passes the position of the adjusting roller 44, the rotating roller 21 can be raised so that the hot cutting component can perform the next hot cutting operation on the packaging bag roll. With the above settings, the packaging bag does not need to travel the entire arm length of the swing arm 41. This greatly optimizes the coordination cycle between the conveying time of the packaging bag under the swing arm 41 and the lifting action of the swing arm 41, improves the conveying efficiency of the packaging bag in the area under the swing arm 41, and further improves the production efficiency of the packaging bag.

[0025] Combination Figures 5 to 6 Specifically, the surface of the crossbar 42 is provided with a sliding groove 421, and the adjustment component 43 includes a threaded rod 431 rotatably installed on one side of the crossbar 42. The threaded rod 431 is aligned with the length direction of the sliding groove 421, and a slider 432 is slidably assembled inside the sliding groove 421. The slider 432 is threadedly connected to the threaded rod 431. By rotating the threaded rod 431, the slider 432 can be controlled to move within the groove 421. A worm gear 433 is fixedly mounted on the surface of the threaded rod 431. A meshing worm 434 is provided on the upper side of the worm gear 433. On a pair of side plates, two worms 434 are fixedly connected in series by a shaft, and a servo motor controlling their rotation is provided at one end of the shaft. The adjusting roller 44 is rotatably mounted between the two sliders 432. When the servo motor drives the two worms 434 to rotate, the corresponding worm gear 433 drives the threaded rod 431 to rotate, further synchronously controlling the movement of the two sliders 432 within the corresponding groove 421, thereby achieving precise displacement control of the adjusting roller 44. It should be noted that the servo motor has an internal brake, and when its output end is not rotating, the shaft is in a locked state, such as the MHMF042L1V2M servo motor of the Panasonic MINAS A6 series. This setting ensures that the adjusting roller 44 can be fixed in the current position after the position is adjusted.

[0026] Combination Figures 5 to 6 The swing arm 41 has an opening on its lower side, and the adjusting roller 44 moves within the opening. The arrangement of the swing arm 41 enables the rotating roller 45, the adjusting roller 44, and the conveyor belt 22 to be on the same horizontal plane.

[0027] Furthermore, the middle part of the crossbeam 42 is bent and protrudes towards the swing arm 41, and can extend into the inside of the opening of the swing arm 41. In particular, this configuration can reduce the structural space occupied by the swing arm 41 and the crossbeam 42. On the other hand, the protruding part of the crossbeam 42 is on the same vertical plane as the swing arm 41, so it can avoid the adjustment roller 44 from contacting the opening of the swing arm 41. Furthermore, the overall width of the swing arm 41 and the crossbeam 42 is not constrained by the diameter of the adjustment roller 44, further reducing the overall width and volume of the swing arm 41 and the crossbeam 42.

[0028] The adjustment component 43 is mounted on the concave surface of the crossbeam 42, which makes the assembly layout of the device simpler and reduces space occupation.

[0029] Combination Figure 5 , Figure 7 A tension assembly 30 is provided between the two side plates. During the rotation of the swing arm 41, the tension assembly 30 is used to adaptively adjust the tension of the conveyor belt 22.

[0030] Furthermore, the tension assembly 30 includes a top plate 31 rotatably mounted on the surface of the side plate, the mounting shaft of which needs to be higher than the lower part of the conveyor belt 22. A spring member 32 is rotatably connected to the middle of the top plate 31. The lower end of the spring member 32 is rotatably connected to the side plate. The spring member 32 is similar to an existing shock absorber. The spring member 32 elastically pushes the top plate 31, so that the top plate 31 has an elastic tendency to rotate upward away from the transmission rod end. On the pair of side plates, a rotating roller 33 and a tensioning roller 34 are rotatably mounted between the two top plates 31. The rotating roller 33 and the tensioning roller 34 are located at the two ends of the top plate 31. A rotating roller 46 is rotatably mounted at the end of the two swing arms 41 away from the rotating roller 35. The upper part of the conveyor belt 22 is wrapped around the tensioning roller 34, the rotating roller 33, and the rotating roller 46. The elastic member 32 elastically pushes the top plate 31, so that the tensioning roller 34 adaptively tightens the conveyor belt 22 in order to cope with the change in tension of the conveyor belt 22 caused by the swinging action of the rotating roller 35 at one end of the swing arm 41.

[0031] Combination Figure 5 The surfaces of the second roller 21 and the third roller 45 are provided with multiple positioning grooves, and the multiple positioning grooves correspond one-to-one with the multiple second conveyor belts 22. The depth of the positioning grooves is less than the thickness of the second conveyor belt 22, which can prevent the multiple second conveyor belts 22 from shifting during conveying.

[0032] Combination Figure 3 and Figure 8 The swing arm 41 is provided with a cooperating component 50 at one end near the rotating roller 45, and the cooperating component 50 is fixedly connected to the hot cutting component of the hot cutting machine; The coordinating component 50 includes a connecting seat 51 fixedly connected to the upper end of the swing arm 41. A connecting seat 53 is connected to the upper side of the connecting seat 51 via a connecting member 52. The connecting member 52 has at least two hinge shafts. A connecting rod 54 is fixedly disposed between the two adjusting components 43 on the two swing arms 41. The connecting rod 54 is fixedly connected to the hot-cutting component. Through the connection of the coordinating component 50, the swing arms 41 can cooperate with the hot-cutting component to operate. Furthermore, the connecting member 52 can adaptively connect the linear motion trajectory of the hot-cutting component with the arcuate motion trajectory of one end of the swing arm 41.

[0033] A drive system is mounted on the side of one of the side plates. The drive system consists of a motor and a one-to-two transmission assembly. The one-to-two transmission assembly has one input end and two output ends. The two output ends rotate at the same speed but in opposite directions. The two output ends of the one-to-two transmission assembly are coaxially connected to the second rotating roller 21 and the single rotating roller 11, respectively. The drive system is used to drive the second rotating roller 21 and the single rotating roller 11 to rotate synchronously and at the same speed in opposite directions, so that the first conveyor belt 12 and the second conveyor belt 22 cooperate to carry out the conveying operation.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A packaging bag conveying device, characterized in that, include: A pair of side panels, and The lower clamping belt mechanism (10) includes a pair of rotating rollers (11) rotatably mounted between the pair of side plates, and a plurality of conveyor belts (12) are arranged axially between the pair of rotating rollers (11). The upper conveyor belt mechanism (20) includes a rotating roller (21) mounted between a pair of side plates and a clamping arm assembly (40). Multiple conveyor belts (22) are disposed between the rotating roller (21) and the clamping arm assembly (40). The clamping arm assembly (40) includes a rotatably mounted swing arm (41) and a fixedly mounted crossbeam (42) disposed on one side of the side plates. A rotating roller (45) is disposed at one end of the swing arm (41), and an adjusting roller is movably mounted on one side of the crossbeam (42). 44), and an adjustment component (43) for controlling the movement of the adjustment roller (44), the second conveyor belt (22) is fitted on the surface of the second rotating roller (21), the adjustment roller (44), and the third rotating roller (45), the swing arm (41) is in a flat state, the third rotating roller (45), the adjustment roller (44), the second conveyor belt (22) and the second rotating roller (21) are on the same horizontal plane, and can cooperate with the lower clamping conveyor belt mechanism (10) to convey the packaging bag, the preset distance between the adjustment roller (44) and the third rotating roller (45) corresponds to the length of the packaging bag; Tension assembly (30), located between a pair of side plates, is used to adaptively adjust the tension of conveyor belt two (22) during the rotation of swing arm (41).

2. The packaging bag conveying device according to claim 1, characterized in that: The surface of the crossbar (42) is provided with a sliding groove (421); The adjustment assembly (43) includes a threaded rod (431) that rotates on one side of the crossbar (42) and a slider (432) that is slidably fitted inside the groove (421).

3. The packaging bag conveying device according to claim 2, characterized in that: The slider (432) is threadedly connected to the threaded rod (431). A worm gear (433) is fixedly mounted on the surface of the threaded rod (431). A meshing worm (434) is provided on the upper side of the worm gear (433). On a pair of side plates, two worms (434) are fixedly connected in series by a shaft. One end of the shaft is provided with a servo motor to control its rotation. The adjusting roller (44) is rotatably mounted between the two sliders (432).

4. The packaging bag conveying device according to claim 3, characterized in that: The swing arm (41) has an opening on its lower side, and the adjusting roller (44) moves within the opening.

5. A packaging bag conveying device according to claim 4, characterized in that: The middle part of the cross frame (42) bends and protrudes towards the swing arm (41) and can extend into the inside of the opening of the swing arm (41). The adjustment component (43) is assembled on the concave surface of the cross frame (42).

6. A packaging bag conveying device according to claim 2, characterized in that: The tension assembly (30) includes a top plate (31) rotatably mounted on the surface of the side plate. A spring member (32) is rotatably connected to the middle of the top plate (31). The lower end of the spring member (32) is rotatably connected to the side plate. The spring member (32) elastically pushes the top plate (31) so that the top plate (31) has an elastic tendency to rotate upward away from the transmission rod end. On the pair of side plates, a rotating roller four (33) and a tensioning roller (34) are respectively rotatably mounted between the two top plates (31). A rotating roller five (46) is rotatably mounted at the end of the two swing arms (41) away from the rotating roller three (45). The upper part of the conveyor belt two (22) is surrounded between the tensioning roller (34), the rotating roller four (33) and the rotating roller five (46). The elastic member (32) elastically pushes the top plate (31) so that the tensioning roller (34) adaptively tightens the conveyor belt two (22).

7. A packaging bag conveying device according to claim 1, characterized in that: The surfaces of the second (21) and the third (45) are provided with multiple positioning grooves, and the multiple positioning grooves correspond one-to-one with the multiple second (22) conveyor belts. The depth of the positioning grooves is less than the thickness of the second (22) conveyor belts.

8. The packaging bag conveying device according to claim 1, characterized in that: The swing arm (41) is provided with a coordinating component (50) at one end near the rotating roller three (45), and the coordinating component (50) is fixedly connected to the hot cutting part of the hot cutting machine; The collaborative component (50) includes a connecting seat one (51) fixedly connected to the upper end of the swing arm (41), and a connecting seat two (53) connected to the upper side of the connecting seat one (51) via a connector (52). A connecting rod (54) is fixedly provided between the two adjusting components (43) on the two swing arms (41). The connector (52) adaptively connects the linear motion trajectory of the hot-cutting component with the arcuate motion trajectory of one end of the swing arm (41).

9. A packaging bag conveying device according to claim 1, characterized in that: A drive system is mounted on the side of one of the side plates, the drive system being used to drive the second rotating roller (21) and the first single rotating roller (11) to rotate synchronously and at the same speed in opposite directions.

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