Automatic material collecting device of paper bag machine

Abstract

The automatic material collecting device of the paper bag machine comprises a machine frame with a feeding station and a discharging station, an annular conveying line is arranged on the machine frame, and a plurality of paper bag clamping mechanisms which are driven by the annular conveying line to pass through the feeding station and the discharging station in turn are arranged at the conveying end of the annular conveying line. The paper bag clamping mechanism comprises a clamp opening mechanism installed at the conveying end of the annular conveying line, an upper clamping plate and a lower clamping plate, wherein the upper clamping plate and the lower clamping plate are in linkage through the clamp opening mechanism. A paper bag clamping opening is formed between the upper clamping plate and the lower clamping plate. The rack is provided with a clamping protruding piece used for pushing the clamp opening mechanism to enable the lower clamping plate to be opened downwards at the feeding station and a discharging protruding piece used for pushing the clamp opening mechanism to enable a paper bag clamping opening to be opened to enable a paper bag to fall off at the discharging station. The opening and clamping mechanism is provided with a clamping elastic piece which drives the lower clamping plate to reset to close the paper bag clamping opening. The paper bag cutting and feeding mechanism can achieve the purpose of automatically taking down paper bags from the paper cutting and feeding mechanism, reduces dependence on manual operation, improves production efficiency and reduces production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of paper bag machines, in particular to an automatic material collecting device for paper bag machines. Background Art

[0002] As an environmentally friendly and economical packaging material, paper bags are widely used in product packaging, logistics, and daily life. The traditional paper bag machine's operating process includes unwinding the roll, feeding the paper, folding it into tubes, cutting and feeding the paper, and bottom sealing. While this process has been mechanized to a certain extent, the collection and sorting of the cut paper bags still faces significant reliance on manual labor.

[0003] For example, after the paper bag cutting process is completed, existing paper bag machines require manual cleaning of the bags. This involves removing the cut bags one by one from the cutting and feeding mechanism and manually sorting and stacking them. This step is not only time-consuming and labor-intensive, but also, due to the high speed of the paper bag production line, requires a large number of workers and is labor-intensive, directly leading to increased production costs, especially a significant increase in labor costs. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an automatic material collecting device for a paper bag machine.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An automatic receiving device for a paper bag machine comprises a frame having a feeding station and a discharging station, and is characterized in that: a circular conveyor line is provided on the frame, and a plurality of paper bag clamping mechanisms are provided at the conveying end of the circular conveyor line, which are driven by the circular conveyor line to pass through the feeding station and the discharging station in turn; the paper bag clamping mechanism comprises an opening mechanism mounted on the conveying end of the circular conveyor line, and an upper clamping plate and a lower clamping plate linked by the opening mechanism, wherein a paper bag clamping opening is formed between the upper clamping plate and the lower clamping plate;

[0007] The frame is provided with a clamping protrusion for pushing the clamping mechanism to open the lower clamping plate downward at the feeding station, and a discharging protrusion for pushing the clamping mechanism to open the paper bag clamping mouth to let the paper bag fall at the discharging station;

[0008] The clamping mechanism is provided with a material clamping elastic member which drives the lower clamping plate to return to its original position and close the clamping opening of the paper bag.

[0009] In the present invention, the annular conveyor line drives the paper bag clamping mechanism along a semicircular arc line through the feeding station, the center of the semicircular arc line is configured to be the same or substantially the same as the paper bag output height at the discharge end of the cutting and feeding mechanism, the material clamping protrusion is configured to open the lower clamping plate at a position higher than the center of the semicircular arc line, and the material clamping elastic member is configured to drive the lower clamping plate to reset after passing the material clamping protrusion and approaching the center of the semicircular arc line, so that the paper bag clamp is closed to clamp the paper bag.

[0010] In the present invention, the opening and clamping mechanism includes an opening and clamping base and an opening and clamping rotating shaft. The opening and clamping base is arranged on the conveying end of the circular conveyor line, one end of the upper clamping plate is fixed on the opening and clamping base, and one end of the lower clamping plate is rotatably mounted on the opening and clamping base by using the opening and clamping rotating shaft; one end of the opening and clamping rotating shaft is connected to a switch clamping link, and the switch clamping link is provided with a switch roller for cooperating with the clamping protrusion and the discharging protrusion; one end of the clamping elastic part is connected to the switch clamping link, and the other end is connected to the opening and clamping base.

[0011] In the present invention, the annular conveyor line includes a conveying drive mechanism, a feed conveying shaft, a rotary conveying shaft and at least one annular conveying module, and the feed conveying shaft and the rotary conveying shaft are respectively installed on the left and right ends of the frame; the annular conveying module includes two conveying sprockets and an annular chain sleeved on the two conveying sprockets, and the two conveying sprockets are fixedly sleeved on the feed conveying shaft and the rotary conveying shaft, and the clamping base is swingably installed on the annular chain using an clamping swinging shaft; the conveying drive mechanism is connected to drive the rotary conveying shaft to rotate.

[0012] In the present invention, a first guide roller, a second guide roller and a third guide roller are provided on the clamping base, wherein the first guide roller and the second guide roller are located on one side of the clamping base, and the third guide roller and the switch roller are located on the other side of the clamping base; the frame is provided with a first guide groove structure for guiding the first guide roller and the second guide roller to move, and a second guide groove structure for guiding the third guide roller to move.

[0013] In the present invention, the first guide groove structure at least includes a first C-shaped guide groove at the feeding station for rolling guidance of the first guide roller.

[0014] In the present invention, the first guide groove structure also includes a first lower guide groove for rolling and guiding the first guide roller at the unloading station position and a second lower guide groove for rolling the second guide roller at the unloading station position; the second guide groove structure at least includes a third lower guide groove for rolling the third guide roller at the unloading station position.

[0015] In the present invention, the first guide groove structure also includes a second C-shaped guide groove away from the first C-shaped guide groove and a first upper guide groove located above the first lower guide groove, the left end of the first lower guide groove corresponds to the outlet of the lower end of the first C-shaped guide groove, and the right end corresponds to the entrance of the lower end of the second C-shaped guide groove; the left end of the first upper guide groove corresponds to the entrance of the upper end of the first C-shaped guide groove, and the right end corresponds to the outlet of the upper end of the second C-shaped guide groove.

[0016] In the present utility model, the automatic material receiving device of the paper bag machine also includes a paper discharge buffer mechanism for preventing the paper bag clamping mechanism from pulling and damaging the paper bag at the feeding station, and the paper discharge buffer mechanism is arranged at the discharge end of the cutting and feeding mechanism; the paper discharge buffer mechanism includes a paper discharge buffer plate and a paper discharge buffer spring, one end of the paper discharge buffer plate is hinged to the cutting and feeding mechanism, one end of the paper discharge buffer spring is connected to the other end of the paper discharge buffer plate, and the other end is connected to the cutting and feeding mechanism.

[0017] The present invention also includes a discharge conveyor line for receiving the paper bags dropped by the paper bag clamping mechanism at the discharge station. The feed end of the discharge conveyor line extends into the discharge station and is located below the paper bag clamping mechanism at the discharge station.

[0018] Beneficial effects of the utility model:

[0019] 1. The utility model is first provided with a circular conveyor line, and then a plurality of paper bag clamping mechanisms are provided on the conveying end of the circular conveyor line. When the circular conveyor line is working, the paper bag clamping mechanisms are driven to pass through the feeding station and the unloading station in turn. When the paper bag clamping mechanism passes through the feeding station, the material clamping protrusion drives the paper bag clamping mechanism to open the paper bag clamping mouth, and the material clamping elastic member returns to close and clamps the paper bag; as the paper bag clamping mechanism passes through the unloading station, the material unloading protrusion drives the paper bag clamping mechanism to open the paper bag clamping mouth and put down the paper bag, thereby achieving the purpose of automatically removing the paper bag from the cutting and feeding mechanism;

[0020] 2. The annular conveyor line drives the paper bag clamping mechanism along a semicircular arc through the feeding station. The center of the semicircular arc is configured to be the same or substantially the same as the paper bag output height at the discharge end of the cutting and feeding mechanism. The clamping protrusion is configured to open the lower clamping plate at a position higher than the center of the semicircular arc. The clamping elastic member is configured to drive the lower clamping plate to reset after passing the clamping protrusion and approaching the center of the semicircular arc, so that the paper bag clamping mouth closes and clamps the paper bag, thereby better clamping the end of the paper bag and ensuring that the paper bag clamping mechanism can effectively clamp the paper bag delivered by the discharge end of the cutting and feeding mechanism;

[0021] 3. A paper discharge buffer mechanism is provided to prevent the paper bag clamping mechanism from tearing the paper bag at the feeding station. When the force of the paper bag clamping mechanism clamping and pulling the paper bag at the feeding station is too large, the paper discharge buffer plate of the paper discharge buffer mechanism can be flipped downward, thereby avoiding resistance to the paper bag and causing the paper bag to be torn.

[0022] To sum up, the utility model can achieve the purpose of automatically removing paper bags from the cutting and feeding mechanism, reduce dependence on manual operation, improve production efficiency, reduce production costs, and at the same time ensure the sorting quality of paper bags, meeting the needs of modern industrial production for automation and intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a top view of the automatic material receiving device of the paper bag machine;

[0025] Figure 2 This is a cross-sectional view of the automatic material receiving device of the paper bag machine;

[0026] Figure 3 It is the front view of the paper bag clamping mechanism;

[0027] Figure 4 It is a rear view of the paper bag clamping mechanism;

[0028] Figure 5 It is a top view of the paper bag clamping mechanism;

[0029] Figure 6 is a schematic diagram of a first guide groove structure;

[0030] Figure 7 A schematic diagram of the second guide groove structure;

[0031] Figure 8 This is a schematic diagram of the paper bag clamping mechanism passing through the material clamping protrusion along a semicircular arc line. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Reference Figure 1-8 The automatic material receiving device of the paper bag machine includes a frame 1 with a feeding station 101 and a discharging station 102, and a ring conveyor line 2 is provided on the frame 1. The conveying end of the ring conveyor line 2 is provided with multiple paper bag clamping mechanisms 3 driven by the ring conveyor line 2 to pass through the feeding station 101 and the discharging station 102 in turn. The ring conveyor line 2 drives the paper bag clamping mechanism 3 along a semicircular arc line 200 to pass through the feeding station 101, and the ring conveyor line 2 drives the paper bag clamping mechanism 3 along a straight line from left to right to pass through the discharging station 102; the paper bag clamping mechanism 3 includes a clamping mechanism installed on the conveying end of the ring conveyor line 2, an upper clamping plate 31 and a lower clamping plate 32 linked by the clamping mechanism, and a paper bag clamping opening is formed between the upper clamping plate 31 and the lower clamping plate 32.

[0036] Furthermore, the frame 1 is provided with a clamping protrusion 4 for pushing the clamping mechanism to open the lower clamping plate 32 downward at the feeding station 101 and a discharging protrusion 5 for pushing the clamping mechanism to open the paper bag clamp and let the paper bag fall at the discharging station 102.

[0037] Furthermore, the clamping mechanism is equipped with a clamping elastic member 33 that drives the lower clamping plate 32 to reset and close the paper bag clamp, thereby driving the lower clamping plate 32 and the upper clamping plate 31 to close together again to achieve the closure of the paper bag clamp.

[0038] Furthermore, the center of the semicircular arc line 200 is configured to be the same or substantially the same as the paper bag output height at the discharge end of the cutting and feeding mechanism 100, and the clamping protrusion 4 is configured to open the lower clamping plate 32 at a position higher than the center of the semicircular arc line 200, and the clamping elastic member 33 is configured to drive the lower clamping plate 32 to reset after passing the clamping protrusion 4 and approaching the center of the semicircular arc line 200, so that the paper bag clamp is closed and clamped, thereby better clamping the end of the paper bag; the clamping elastic member 33 is configured to drive the lower clamping plate 32 to reset after passing the material discharge protrusion 5, thereby driving the lower clamping plate 32 and the upper clamping plate 31 to close again and move closer together, thereby achieving the closure of the paper bag clamp.

[0039] During operation, the annular conveyor line 2 drives the paper bag clamping mechanism 3 in the feeding station 101 along half of the stroke of the semicircular arc line 200 from top to bottom, approaching the cutting and feeding mechanism 100. During this process, the clamping protrusion 4 opens the lower clamping plate 32 at a position higher than the center of the semicircular arc line 200, so that the paper bag fed by the cutting and feeding mechanism 100 can be effectively clamped; and as the paper bag clamping mechanism 3 approaches the cutting and feeding mechanism 100, the lateral movement speed of the paper bag clamping mechanism 3 gradually decreases due to the curvature of the semicircular arc line 200, until the height of the paper bag clamping mechanism 3 is flush with the center of the semicircular arc line 200, the lateral movement speed of the paper bag clamping mechanism 3 is zero, and at this time the lateral movement speed of the paper bag is not zero, allowing the paper bag to normally enter the paper bag clamping opening of the paper bag clamping mechanism 3 and be clamped by the paper bag clamping opening. When the paper bag clamping mechanism 3 continues to complete the remaining stroke along the semicircular arc line 200, during this process, the paper bag clamping mechanism 3 moves from top to bottom and away from the cutting and paper feeding mechanism 100, thereby realizing the unloading action of the cutting and paper feeding mechanism 100; and as the paper bag clamping mechanism 3 moves away from the cutting and paper feeding mechanism 100, the lateral movement speed of the paper bag clamping mechanism 3 gradually increases, pulling the paper bag, thereby pulling the paper bag away from the cutting and paper feeding mechanism 100.

[0040] In this embodiment, a circular conveyor line 2 is first provided, and then a plurality of paper bag clamping mechanisms 3 are provided on the conveying end of the circular conveyor line 2, which are driven by the circular conveyor line 2 to pass through the feeding station 101 and the unloading station 102 in turn. The paper bag clamping mechanism 3 includes an opening mechanism installed on the conveying end of the circular conveyor line 2, an upper clamping plate 31 and a lower clamping plate 32 linked by the opening mechanism. When the circular conveyor line 2 is working, the paper bag clamping mechanism 3 is driven to pass through the feeding station 101 and the unloading station 102 in turn. 1, the material clamping protrusion 4 will drive the paper bag clamping mechanism 3 to open the paper bag clamping mouth, and the material clamping elastic member 33 will return to the closed position to clamp the paper bag; as the paper bag clamping mechanism 3 passes the material discharge station 102, the material discharge protrusion 5 will drive the paper bag clamping mechanism 3 to open the paper bag clamping mouth and put down the paper bag, thereby achieving the purpose of automatically removing the paper bag from the cutting and feeding mechanism 100, reducing dependence on manual operation, improving production efficiency, reducing production costs, and at the same time ensuring the finishing quality of the paper bag, meeting the needs of modern industrial production for automation and intelligence.

[0041] As a preferred embodiment, the clamping mechanism includes a clamping base 34 and a clamping shaft 35. The clamping base 34 is arranged on the conveying end of the circular conveyor line 2. One end of the upper clamping plate 31 is fixed on the clamping base 34. One end of the lower clamping plate 32 is rotatably mounted on the clamping base 34 using the clamping shaft 35. The lower clamping plate 32 swings relative to the upper clamping plate 31 with the center of rotation of the clamping shaft 35, thereby opening and closing the clamp mouth of the paper bag. Furthermore, one end of the clamping shaft 35 is connected to a switch clamp link 36, and the switch clamp link 36 is provided with a switch roller 37 for cooperating with the clamping protrusion 4 and the discharge protrusion 5. The switch roller 37 is configured to cooperate with the clamping protrusion 4 in the feeding station 101 and to cooperate with the discharge protrusion 5 in the discharge station 102; when the switch roller 37 passes through the clamping protrusion 4 or the discharge protrusion 5, the clamping protrusion 4 or the discharge protrusion 5 pushes the switch roller 37, so that the switch clamp link 36 links the clamping shaft 35 to rotate and drives the lower clamping plate 32 relative to The upper clamping plate 31 swings, thereby opening the paper bag jaws; the clamping elastic member 33 is a spring, one end of which is connected to the switch clamp link 36, and the other end is connected to the clamp opening base 34; when the paper bag jaws are opened, the clamping elastic member 33 stores energy under the pulling action of the switch clamp link 36, and when the switch roller 37 is separated from the clamping protrusion 4 or the material discharge protrusion 5, the clamping elastic member 33 releases energy, pulls the switch clamp link 36 to rotate the clamp opening shaft 35 and drives the lower clamping plate 32 to swing back relative to the upper clamping plate 31, thereby closing the paper bag jaws.

[0042] As a preferred embodiment, the annular conveyor line 2 includes a conveying drive mechanism 20, a feed conveying shaft 211, a rotary conveying shaft 212 and at least one annular conveying module 22. The feed conveying shaft 211 and the rotary conveying shaft 212 are respectively mounted on the left and right ends of the frame 1 using bearing seats; the annular conveying module 22 includes two conveying sprockets 221 and an annular chain 222 sleeved on the two conveying sprockets 221. The conveying sprocket 221 adopts a 5-point 94-tooth sprocket. The two conveying sprockets 221 are respectively fixedly sleeved on the feed conveying shaft 211 and the rotary conveying shaft 212. The semicircular arc line 200 corresponds to the conveying sprocket 221 on the feed conveying shaft 211. The clamping mechanism The clamping base 34 is swingably mounted on the annular chain 222 using an clamping swing shaft 30, and the annular chains 222 of the annular conveying module 22 are commonly connected to the chain connecting seat 223 of the clamping swing shaft 30, and the clamping swing shaft 30 is rotatably mounted on the chain connecting seat 223; the conveying drive mechanism 20 is connected to drive the rotary conveying shaft 212 to rotate. When the conveying drive mechanism 20 drives the rotary conveying shaft 212 to rotate, the two conveying sprockets 221 and the annular chain 222 are used to drive the feed conveying shaft 211 to rotate synchronously, thereby achieving the purpose of synchronous rotation of the feed conveying shaft 211 and the rotary conveying shaft 212 under the action of the two conveying sprockets 221 and the annular chain 222.

[0043] In this embodiment, the conveying drive mechanism 20 may be a conventional belt drive mechanism, gear drive mechanism or chain drive structure driven by a motor, preferably a belt drive mechanism.

[0044] In this embodiment, it is preferred that there are two annular conveying modules 22 and they are distributed at axial intervals along the conveying shaft 21. The clamping base 34 of the clamping mechanism is fixed with a clamping connection seat connected to the annular chain 222. In this way, the two annular conveying modules 22 are used to form an effective supporting connection for the two ends of the clamping mechanism, thereby ensuring the stability of the clamping mechanism during annular movement.

[0045] As a preferred embodiment, the clamping base 34 is provided with a first guide roller 341, a second guide roller 342 and a third guide roller 343, wherein the first guide roller 341 and the second guide roller 342 are located on one side of the clamping base 34, and the third guide roller 343 and the switch roller 37 are located on the other side of the clamping base 34; the frame 1 is provided with a first guide groove structure for guiding the first guide roller 341 and the second guide roller 342 to move, and a second guide groove structure for guiding the third guide roller 343 to move. The first guide groove structure and the second guide groove structure are both used to constrain the clamping base 34 at the feeding station 101 and the discharging station 102, so as to limit the large swing angle of the clamping base 34 relative to the annular conveying module 22, so that the clamping protrusion 4 and the discharging protrusion 5 can open the paper bag clamp at the corresponding station.

[0046] Furthermore, the first guide groove structure at least includes a first C-shaped guide groove 103 for rolling guidance of the first guide roller 341 at the feeding station 101. When the paper bag clamping mechanism 3 is at the feeding station 101, the switch roller 37 is pushed by the clamping protrusion 4 to open the paper bag clamp. Under the guidance constraint of the first C-shaped guide groove 103, the first guide roller 341 keeps the upper clamping plate 31 and the lower clamping plate 32 in an open state and moves closer to the paper bag, so as to better clamp the paper bag delivered by the cutting and feeding mechanism 100.

[0047] In this embodiment, the first guide groove structure also includes a first lower guide groove 104 for rolling and guiding the first guide roller 341 at the unloading station 102 and a second lower guide groove 105 for rolling the second guide roller 342 at the unloading station 102; the second guide groove structure at least includes a third lower guide groove 106 for rolling the third guide roller 343 at the unloading station 102. The clamping base 34 cannot swing arbitrarily relative to the circular conveyor line 2 under the constraints of the first lower guide groove 104, the second lower guide groove 105 and the third lower guide groove 106, so that the unloading protrusion 5 can normally drive the switch roller 37 to open the paper bag clamp and put down the paper bag.

[0048] In this embodiment, the first guide groove structure also includes a second C-shaped guide groove 107 away from the first C-shaped guide groove 103 and a first upper guide groove 108 located above the first lower guide groove 104. The left end of the first lower guide groove 104 corresponds to the outlet of the lower end of the first C-shaped guide groove 103, and the right end corresponds to the entrance of the lower end of the second C-shaped guide groove 107; the left end of the first upper guide groove 108 corresponds to the entrance of the upper end of the first C-shaped guide groove 103, and the right end corresponds to the outlet of the upper end of the second C-shaped guide groove 107, so that the first guide roller 341 is always guided, so that the paper bag clamping mechanism 3 is always constrained to prevent the paper bag clamping mechanism 3 from swinging arbitrarily during the rotation process.

[0049] In this embodiment, the second guide groove structure includes at least a third C-shaped guide groove 109 and a fourth upper guide groove 110 located above the third lower guide groove 106. One end of the fourth upper guide groove 110 corresponds to the upper arc surface of the cam seat where the clamping protrusion 4 is located, and the other end corresponds to the outlet of the upper end of the third C-shaped guide groove 109. One end of the third lower guide groove 106 corresponds to the inlet of the lower end of the third C-shaped guide groove 109, and the other end corresponds to the lower arc surface of the cam seat where the clamping protrusion 4 is located. The third C-shaped guide groove 109 and the fourth upper guide groove 110 located above the third lower guide groove 106 can further improve the stability of the movement of the paper bag clamping mechanism 3.

[0050] As a preferred embodiment, since this embodiment adopts a paper bag clamping mechanism 3 to connect and drive the paper bag to move out of the cutting and feeding mechanism 100, in order to avoid the paper bag being damaged by the excessive force of the paper bag clamping mechanism 3 pulling the paper bag during this process, the automatic receiving device of the paper bag machine also includes a paper discharge buffer mechanism 6 for preventing the paper bag clamping mechanism 3 from pulling and damaging the paper bag at the feeding station 101. The paper discharge buffer mechanism 6 is arranged at the discharge end of the cutting and feeding mechanism 100, and the top surface of the paper discharge buffer plate 61 of the paper discharge buffer mechanism 6 is the same or substantially the same height as the center of the semicircular arc line 200; the paper discharge buffer mechanism 6 includes a paper discharge buffer plate 61 and a paper discharge buffer spring 62, one end of the paper discharge buffer plate 61 is hinged to the discharge end of the cutting and feeding mechanism 100, one end of the paper discharge buffer spring 62 is connected to the other end of the paper discharge buffer plate 61, and the other end is connected to the cutting and feeding mechanism 100. The paper bag extends from the other end of the paper discharge buffer plate 61 into the feeding station 101. When the force exerted by the paper bag clamping mechanism 3 on the paper bag at the feeding station 101 is too great, the paper discharge buffer spring 62 can be stretched, and then the other end of the paper discharge buffer plate 61 can be turned downward, thereby preventing the paper discharge buffer plate 61 from being inactive and resisting the paper bag, which may cause the paper bag to be torn.

[0051] As a preferred embodiment, the automatic receiving device of the paper bag machine also includes a discharge conveyor line 7 for receiving paper bags placed by the paper bag clamping mechanism 3 at the discharge station 102. The feed end of the discharge conveyor line 7 extends into the discharge station 102 and is located below the paper bag clamping mechanism 3 at the discharge station 102. The paper bag clamping mechanism 3 places the paper bag at the discharge station 102, and the discharge conveyor line 7 then delivers the paper bag out of the discharge station 102, allowing the paper bag to be stacked at the next station to be transported by the discharge conveyor line 7, thereby completing the purpose of loading and unloading paper bags from the cutting and feeding mechanism 100. In this embodiment, the discharge conveyor line 7 is a belt conveyor.

[0052] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the scope of protection of the present invention.

Claims

1. An automatic material receiving device for a paper bag machine, comprising a frame (1) having a feeding station (101) and a discharging station (102), characterized in that: The frame (1) is provided with an annular conveyor line (2), and a plurality of paper bag clamping mechanisms (3) are provided on the conveying end of the annular conveyor line (2) and are driven by the annular conveyor line (2) to pass through the feeding station (101) and the unloading station (102) in turn; the paper bag clamping mechanism (3) comprises an opening mechanism installed on the conveying end of the annular conveyor line (2), an upper clamping plate (31) and a lower clamping plate (32) linked by the opening mechanism, and a paper bag clamping opening is formed between the upper clamping plate (31) and the lower clamping plate (32); The frame (1) is provided with a clamping protrusion (4) for pushing the clamping mechanism to open the lower clamping plate (32) downward at the feeding station (101) and a discharging protrusion (5) for pushing the clamping mechanism to open the paper bag clamping opening to allow the paper bag to fall at the discharging station (102); The clamping mechanism is provided with a material clamping elastic member (33) that drives the lower clamping plate (32) to reset and close the clamping opening of the paper bag.

2. The automatic material collecting device for a paper bag machine according to claim 1, characterized in that: The annular conveyor line (2) drives the paper bag clamping mechanism (3) along the semicircular arc line (200) to pass through the feeding station (101), the center of the semicircular arc line (200) is configured to be the same as or substantially the same as the paper bag output height at the discharge end of the cutting and feeding mechanism (100), the clamping protrusion (4) is configured to open the lower clamping plate (32) at a position higher than the center of the semicircular arc line (200), and the clamping elastic member (33) is configured to drive the lower clamping plate (32) to reset after passing the clamping protrusion (4) and approaching the center of the semicircular arc line (200), so that the paper bag clamping mouth is closed to clamp the paper bag.

3. The automatic material collecting device for a paper bag machine according to claim 1 or 2, characterized in that: The clamping mechanism comprises a clamping base (34) and a clamping shaft (35), wherein the clamping base (34) is arranged on the conveying end of the circular conveyor line (2), one end of the upper clamping plate (31) is fixed on the clamping base (34), and one end of the lower clamping plate (32) is rotatably mounted on the clamping base (34) by means of the clamping shaft (35); one end of the clamping shaft (35) is connected to a switch clamping link (36), and the switch clamping link (36) is provided with a switch roller (37) for cooperating with the clamping protrusion (4) and the discharge protrusion (5); one end of the clamping elastic member (33) is connected to the switch clamping link (36), and the other end is connected to the clamping base (34).

4. The automatic material collecting device for a paper bag machine according to claim 3, characterized in that: The annular conveyor line (2) comprises a conveying drive mechanism (20), a feed conveying rotating shaft (211), a rotary conveying rotating shaft (212) and at least one annular conveying module (22), wherein the feed conveying rotating shaft (211) and the rotary conveying rotating shaft (212) are respectively mounted on the left and right ends of the frame (1); the annular conveying module (22) comprises two conveying sprockets (221) and an annular chain (222) sleeved on the two conveying sprockets (221), wherein the two conveying sprockets (221) are respectively fixedly sleeved on the feed conveying rotating shaft (211) and the rotary conveying rotating shaft (212), and the clamping base (34) is swingably mounted on the annular chain (222) using an clamping swing shaft (30); the conveying drive mechanism (20) is connected to drive the rotary conveying rotating shaft (212) to rotate.

5. The automatic material collecting device for a paper bag machine according to claim 3, characterized in that: The clamping base (34) is provided with a first guide roller (341), a second guide roller (342) and a third guide roller (343), wherein the first guide roller (341) and the second guide roller (342) are located on one side of the clamping base (34), and the third guide roller (343) and the switch roller (37) are located on the other side of the clamping base (34); the frame (1) is provided with a first guide groove structure for guiding the first guide roller (341) and the second guide roller (342) to move, and a second guide groove structure for guiding the third guide roller (343) to move.

6. The automatic material collecting device for a paper bag machine according to claim 5, characterized in that: The first guide groove structure at least comprises a first C-shaped guide groove (103) at the feeding station (101) for rolling guidance of the first guide roller (341).

7. The automatic material collecting device for a paper bag machine according to claim 5, characterized in that: The first guide groove structure further includes a first lower guide groove (104) for rolling and guiding the first guide roller (341) at the material discharge station (102) and a second lower guide groove (105) for rolling the second guide roller (342) at the material discharge station (102); the second guide groove structure at least includes a third lower guide groove (106) for rolling the third guide roller (343) at the material discharge station (102).

8. The automatic material collecting device for a paper bag machine according to claim 6, characterized in that: The first guide groove structure further comprises a second C-shaped guide groove (107) away from the first C-shaped guide groove (103) and a first upper guide groove (108) located above the first lower guide groove (104), wherein the left end of the first lower guide groove (104) corresponds to the outlet at the lower end of the first C-shaped guide groove (103), and the right end corresponds to the inlet at the lower end of the second C-shaped guide groove (107); the left end of the first upper guide groove (108) corresponds to the inlet at the upper end of the first C-shaped guide groove (103), and the right end corresponds to the outlet at the upper end of the second C-shaped guide groove (107).

9. The automatic material collecting device for a paper bag machine according to claim 1, characterized in that: The automatic receiving device of the paper bag machine further comprises a paper discharge buffer mechanism (6) for preventing the paper bag clamping mechanism (3) from tearing the paper bag at the feeding station (101), wherein the paper discharge buffer mechanism (6) is arranged at the discharge end of the cutting and feeding mechanism (100); the paper discharge buffer mechanism (6) comprises a paper discharge buffer plate (61) and a paper discharge buffer spring (62), wherein one end of the paper discharge buffer plate (61) is hinged to the cutting and feeding mechanism (100), and one end of the paper discharge buffer spring (62) is connected to the other end of the paper discharge buffer plate (61), and the other end is connected to the cutting and feeding mechanism (100).

10. The automatic material collecting device for a paper bag machine according to claim 1, characterized in that: It also includes a discharge conveyor line (7) for receiving the paper bag dropped by the paper bag clamping mechanism (3) at the discharge station (102), wherein the feed end of the discharge conveyor line (7) extends into the discharge station (102) and is located below the paper bag clamping mechanism (3) at the discharge station (102).

Images