Bag rotating machine

Abstract

The utility model discloses a gunny bag rotating machine which comprises a control device and a conveying device (5) and further comprises a machine frame assembly (1), and the machine frame assembly (1) is arranged over the conveying device (5) in a crossing mode. The clamping and rotating device (2) is detachably installed on the upper portion in the rack assembly (1); the rotation driving mechanism (3) is detachably installed on one side of the upper portion of the rack assembly (1), and the rotation driving mechanism (3) is connected with the frame (21) of the clamping and rotating device (2) through a rotating shaft (36); wherein the clamping and rotating device (2) and the rotation driving mechanism (3) are both connected with the control equipment. The gunny bag rotating machine is simple in structure, novel and reasonable in design, low in manual participation, high in working efficiency and easy to operate, the shape of the gunny bag can be adjusted in the process from unloading to framing, and continuous and stable framing of the gunny bag is guaranteed.

Description

Technical Field

[0001] The utility model relates to a rotary machine, in particular to a sack rotary machine, which is mainly used for conveying sacks of cigarette industrial production equipment and belongs to the technical field of tobacco production and manufacturing. Background Art

[0002] Generally speaking, during the cigarette production process, tobacco stations in various places usually pack the flue-cured tobacco purchased from farmers into sacks for easy transportation and storage. These sacks of flue-cured tobacco are then uniformly loaded onto trucks and sent to various redrying plants. After arriving at the redrying plant, the staff need to manually unload the flue-cured tobacco from the sacks, load them into tobacco racks, and then transport them to the warehouse for storage.

[0003] However, the unloading and framing work in this process currently relies mainly on manual operation, which has the following problems:

[0004] 1. High labor intensity: The manual unloading and framing process requires a lot of manpower. Workers need to bend over and lift heavy objects constantly. Long-term repetitive labor can easily lead to physical fatigue and injury.

[0005] 2. Low work efficiency: Due to reliance on manual operation, the speed of unloading and loading is relatively slow, which cannot meet the high-efficiency requirements of large-scale production and logistics;

[0006] 3. Unstable work quality: Human factors may cause errors or negligence during unloading and framing, affecting the quality and production efficiency of flue-cured tobacco.

[0007] At present, a Chinese utility model patent with announcement number CN210133672U discloses a sack reversing device, including a frame and a clamping mechanism for taking and placing sacks, a walking mechanism, a clamping rotation mechanism, and a position acquisition mechanism. Although it can identify the placement position and direction of the sacks and intelligently perform clamping and reversing tasks, it has high purchase and maintenance costs and low work efficiency.

[0008] Therefore, the key to solving the above technical problems is to develop a sack rotating machine with high working efficiency and less manual participation. Summary of the invention

[0009] In view of the many defects and shortcomings existing in the above-mentioned background technology, the present invention has made improvements and innovations thereto, with the aim of providing a sack rotating machine with a simple structure, novel and reasonable design, less manual participation, high work efficiency and simple operation, which can adjust the shape of the sacks from unloading to framing and ensure continuous and stable framing of the sacks.

[0010] Another invention purpose of the utility model is to be safe and reliable, to reduce the labor intensity of the staff, to improve work efficiency, and at the same time to effectively solve the problems existing in the current cigarette production process, to ensure production quality and safety, thereby improving overall production efficiency and economic benefits.

[0011] In order to solve the above technical problems and achieve the above invention objectives, the utility model provides a sack rotating machine and a method for using the same by adopting the following design structure and the following technical solutions:

[0012] A sack rotating machine, comprising a control device and a conveying device (5), and further comprising:

[0013] A frame assembly (1), the frame assembly (1) is arranged across and directly above the conveying device (5);

[0014] A clamping and rotating device (2), the clamping and rotating device (2) is detachably mounted on the upper part of the frame assembly (1);

[0015] A rotating drive mechanism (3), the rotating drive mechanism (3) is detachably mounted on one side above the frame assembly (1), and the rotating drive mechanism (3) is connected to the frame (21) of the clamping and rotating device (2) via a rotating shaft (36);

[0016] Wherein, the clamping and rotating device (2) and the rotating driving mechanism (3) are both connected to the control device.

[0017] Preferably, it also includes a rotation start position detection sensor (14) and a rotation end position detection sensor (15) arranged on the frame assembly (1), wherein the rotation start position detection sensor (14) and the rotation end position detection sensor (15) are both connected to the control device.

[0018] Preferably, the frame assembly (1) comprises:

[0019] A frame (11), the frame (11) comprising a connecting frame and supporting legs respectively connected to the bottom of four corners of the connecting frame;

[0020] A slewing support (12), wherein the slewing support (12) is a deep groove ball bearing, the outer ring of the slewing support (12) is connected to the frame (11) by bolts, and the inner ring of the slewing support (12) is connected to the frame (21) of the clamping device (2) by bolts;

[0021] Two mounting frames (13), the two mounting frames (13) are respectively arranged on one side of the inner cross piece of the frame connecting the frame (11) and one side of the outer side of the frame connecting the frame (11), and the two mounting frames (13) are arranged at 90 degrees to the center line of the frame connecting the frame (11);

[0022] The rotation start position detection sensor (14) is mounted on a mounting frame (13) on one side of the crossbar inside the frame connecting the frame (11), and the rotation end position detection sensor (15) is mounted on a mounting frame (13) on one side of the outer side of the frame connecting the frame (11).

[0023] Preferably, the clamping and rotating device (2) comprises:

[0024] A frame (21), wherein a plurality of groups of concentric connection holes of different diameters are evenly distributed in the middle of the frame (21);

[0025] Two clamping arms (22), the two clamping arms (22) are located at two ends below the frame (21), and the two clamping arms (22) are slidably connected between two linear guide rails (23);

[0026] Linear guide rails (23), the linear guide rails (23) are symmetrically arranged on both sides of the frame (21) in the length direction;

[0027] Two clamping cylinders (25), the two clamping cylinders (25) are respectively arranged on both sides of the frame (21), and the telescopic rod ends of the two clamping cylinders (25) are arranged opposite to each other;

[0028] The two clamping cylinders (25) are connected to the control device, and the telescopic rod end of each clamping cylinder (25) is connected to the clamping arm (22) at the corresponding end through a Y-shaped joint (27). The clamping arm (22) is driven by the clamping cylinder (25) connected thereto to clamp or release the sack (4).

[0029] Preferably, it also includes:

[0030] A first sensing plate (24), the first sensing plate (24) being arranged above one end of the frame (21);

[0031] A second sensing plate (28), the second sensing plate (28) is arranged above the connecting piece at the other end of the frame (21);

[0032] A clamping detection sensor (29), the clamping detection sensor (29) is mounted on the second sensing plate (28), and the clamping detection sensor (29) is connected to the control device;

[0033] The first sensing plate (24) is used to work in conjunction with the sensing rotation end position detection sensor (15), and the second sensing plate (28) is used to work in conjunction with the sensing rotation start position detection sensor (14); the clamping detection sensor (29) is used to work in conjunction with the clamping arm connecting plate (221).

[0034] Preferably, the clamping arm (22) comprises:

[0035] A clamp arm connecting plate (221), wherein a plurality of mounting holes are provided on the clamp arm connecting plate (221), which are used to fix the slider of the clamp arm support (222) and the linear guide rail (23) and the first bolt (267) of the automatic centering connecting rod mechanism (26);

[0036] A clamp arm support (222), the upper end of the clamp arm support (222) is connected to the clamp arm connecting plate (221), and the upper part of the clamp arm support (222) is provided with an inward bending portion;

[0037] The clamping plate (223) is connected to the lower end of the clamping arm support (222), and the two ends of the clamping plate (223) are also connected to guide plates.

[0038] Preferably, the rotary drive mechanism (3) comprises:

[0039] A rotary cylinder (31), the rotary cylinder (31) is connected to one side of the upper part of the frame (11) through a fixed seat;

[0040] A fisheye joint (32), one end of the fisheye joint (32) is connected to the working end of the rotary cylinder (31), and the other end of the fisheye joint (32) is connected to one end of the rotating arm (34) through a locking bolt (33);

[0041] A rotating arm (34), the other end of which is fixedly connected to a rotating shaft (36) via a key;

[0042] A rotating shaft (36), the rotating shaft (36) passes through a hole in the middle of the slewing support (12) and is connected to a corresponding connecting hole of the frame (21);

[0043] An end cover (35) is also connected above the connection between the rotating arm (34) and the rotating shaft (36), and the rotating cylinder (31) is connected to the control device.

[0044] The working principle is: before using a sack rotating machine with the above-mentioned design structure, the operator only needs to move the sack rotating machine with the design structure of the utility model to the designated working position manually or with corresponding transport equipment and place it for use.

[0045] When in use, the utility model is started to operate. When in operation, first, under the control preset of the control device, the conveying device (5) conveys the sack (4) to a designated position and then stops, and the control device controls the clamping cylinder (25) on the clamping and rotating device (2) to drive the clamping arms (22) at both ends to move toward the center;

[0046] Then, if the clamping arm connecting plate (221) of the clamping and rotating device (2) does not reach the clamping detection sensor (29) within a specified time, that is, the clamping detection sensor (29) does not detect a signal, it means that the sack (4) is clamped in the long direction, and the control device controls the clamping cylinder (25) to drive the clamping arms (22) at both ends to open outward, and the conveying device (5) continues to convey the sack (4) downstream;

[0047] If the clamping detection sensor (29) detects a signal, it means that the short direction of the sack (4) is clamped. At this time, the control device controls the rotating cylinder (31) to drive the clamping device (2) to rotate 90°. When the rotation end position detection sensor (15) detects a signal, the control device controls the clamping cylinder (25) to drive the clamping arms (22) at both ends to open outward to the limit. Then, the control device controls the rotating cylinder (31) to drive the clamping device (2) to rotate 90°.

[0048] Finally, the rotation start position detection sensor (14) detects a signal, and the control device sends a command signal to the conveying device (5) to continue conveying the sack (4) downstream; when the next sack (4) arrives at the specified position of the conveying device (5), the system enters the next working cycle until the corresponding work of the utility model is completed. As time goes by, when the work is completed and the sack rotating machine needs to be stopped, the operator only needs to stop the machine by controlling the control device of the utility model. At the same time, the various components of the utility model are cleaned and repaired for the next cycle.

[0049] Compared with the prior art, the utility model has the following beneficial effects:

[0050] 1. The utility model has an ingenious design, a simple structure and is easy to control. It can adjust the shape of the sacks from unloading to framing and ensure the continuous and stable framing of the sacks.

[0051] 2. The utility model can turn the sacks into a certain shape (in the length direction or width direction) according to the needs of the downstream framing equipment and transport them downstream, thereby ensuring that the downstream framing is reliable and stable;

[0052] 3. The clamping detection sensor provided on the clamping and rotating device of the utility model can adapt to sacks of different sizes by adjusting its installation position, and the shape of the sack (in the length direction or width direction) can be judged only by it, which is economical, energy-saving, effective and reliable;

[0053] 4. The utility model adopts a cylinder to realize the rotation of the clamping device, and the starting and ending positions are fixed and reliable;

[0054] 5. The utility model is safe and reliable, can reduce the labor intensity of staff and improve work efficiency, and at the same time effectively solve the problems existing in the current cigarette production process, ensure production quality and safety, and thus improve overall production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0056] Figure 1 This is one of the use state diagrams of the utility model;

[0057] Figure 2 This is the second usage state diagram of the utility model;

[0058] Figure 3 This is the third use state diagram of the utility model;

[0059] Figure 4 This is the fourth use state diagram of the utility model;

[0060] Figure 5 This is the fifth use state diagram of the utility model;

[0061] Figure 6 This is the sixth use state diagram of the utility model;

[0062] Figure 7 It is one of the overall structural schematic diagrams of the utility model;

[0063] Figure 8 This is the second schematic diagram of the overall structure of the utility model;

[0064] Fig. 9 It is a front view of the utility model;

[0065] Fig.10 It is a left view of the utility model;

[0066] Fig.11 It is a bottom view of the utility model;

[0067] Fig.12 This is one of the structural schematic diagrams of the components of the clamping and rotating device (2) of the utility model;

[0068] Fig.13 This is the second structural schematic diagram of the components of the clamping and rotating device (2) of the utility model;

[0069] Fig.14 It is a schematic diagram of the exploded structure of the components of the automatic centering connecting rod mechanism (26) of the utility model;

[0070] Fig.15 It is a schematic diagram of the exploded structure of the components of the rotary drive mechanism (3) of the utility model;

[0071] Fig.16 It is the pneumatic principle diagram of the utility model;

[0072] Among them, the numbers in the figure are: 1-frame assembly, 11-frame, 12-slewing support, 13-mounting frame, 14-rotation start position detection sensor, 15-rotation end position detection sensor;

[0073] 2—clamping and rotating device, 21—frame, 22—clamping arm, 221—clamping arm connecting plate, 222—clamping arm support, 223—clamping plate, 23—linear guide rail, 24—first induction plate, 25—clamping cylinder, 26—automatic centering connecting rod mechanism, 261—support shaft, 262—crank arm, 263—connecting rod, 264—bearing, 265—spherical bearing, 266—spacer, 267—first bolt, 268—second bolt, 27—Y-shaped joint, 28—second induction plate, 29—clamping detection sensor;

[0074] 3—rotation drive mechanism, 31—rotation cylinder, 32—fisheye joint, 33—locking bolt, 34—rotation arm, 35—end cover, 36—rotation shaft;

[0075] 4—sackcloth;

[0076] 5—Conveying device. DETAILED DESCRIPTION

[0077] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0078] Example 1

[0079] As the instruction manual Figure 1 To the instruction manual Fig.16 The sack rotating machine shown includes a control device and a conveying device 5, and also includes:

[0080] A frame assembly 1, wherein the frame assembly 1 is arranged across and directly above the conveying device 5;

[0081] A clamping and rotating device 2, which is detachably mounted on the upper part of the frame assembly 1;

[0082] A rotating drive mechanism 3, which is detachably mounted on one side above the frame assembly 1, and is connected to the frame 21 of the clamping device 2 via a rotating shaft 36;

[0083] The clamping and rotating device 2 and the rotating driving mechanism 3 are both connected to the control device.

[0084] In the utility model, the conveying device 5 is a belt conveyor; at the same time, the control device is the existing technology, which is an editable logic controller and PLC or PC, or it can be a commercially available intelligent control device that can control the sack rotating machine to operate and complete the corresponding functions.

[0085] Furthermore, it also includes a rotation start position detection sensor 14 and a rotation end position detection sensor 15 arranged on the frame assembly 1, wherein the rotation start position detection sensor 14 and the rotation end position detection sensor 15 are both connected to the control device.

[0086] In the present invention, the rotation start position detection sensor 14 and the rotation end position detection sensor 15 are used to monitor the position of the two extreme positions when the clamping and rotating device 2 performs a 90° rotation motion.

[0087] Furthermore, the frame assembly 1 includes:

[0088] The frame 11 includes a connecting frame and supporting legs respectively connected to the bottom of four corners of the connecting frame;

[0089] The slewing support 12 is a deep groove ball bearing, the outer ring of the slewing support 12 is connected to the frame 11 by bolts, and the inner ring of the slewing support 12 is connected to the frame 21 of the clamping device 2 by bolts;

[0090] Two mounting frames 13, the two mounting frames 13 are respectively arranged on one side of the inner cross piece of the frame connecting the rack 11 and one side of the outer side of the frame connecting the rack 11, and the two mounting frames 13 are arranged at 90 degrees to the center line of the frame connecting the rack 11;

[0091] The rotation start position detection sensor 14 is installed on the mounting frame 13 on one side of the internal crossbar of the frame 11, and the rotation end position detection sensor 15 is installed on the mounting frame 13 on one side of the outer side of the frame 11.

[0092] Furthermore, the clamping and rotating device 2 comprises:

[0093] The frame 21 has a plurality of concentric connection holes with different diameters and uniform distribution in the middle thereof;

[0094] Two clamping arms 22, the two clamping arms 22 are located at two ends below the frame 21, and the two clamping arms 22 are slidably connected between two linear guide rails 23;

[0095] Linear guide rails 23, which are symmetrically arranged on both sides of the frame 21 in the length direction;

[0096] Two clamping cylinders 25, the two clamping cylinders 25 are respectively arranged on both sides of the frame 21, and the telescopic rod ends of the two clamping cylinders 25 are arranged opposite to each other;

[0097] Among them, the two clamping cylinders 25 are connected to the control device, and the telescopic rod end of each clamping cylinder 25 is connected to the clamping arm 22 at the corresponding end through a Y-shaped joint 27. The clamping arm 22 is driven by the clamping cylinder 25 connected thereto to clamp or release the sack 4.

[0098] In the utility model, three groups of concentric connection holes with different diameters and uniform distribution are provided in the middle of the frame 21 , which are used to connect the inner ring of the slewing support 12 and the rotating shaft 36 of the rotating drive mechanism 3 respectively.

[0099] Specifically, it also includes:

[0100] A first sensing plate 24, the first sensing plate 24 is disposed above one end of the frame 21;

[0101] A second sensing plate 28, which is disposed above the connecting piece at the other end of the frame 21;

[0102] A clamping detection sensor 29, which is mounted on the second sensing plate 28 and is connected to the control device;

[0103] Among them, the first sensing plate 24 is used to work together with the sensing rotation end position detection sensor 15 to complete the work, the second sensing plate 28 is used to work together with the sensing rotation start position detection sensor 14 to complete the work; the clamping detection sensor 29 is used to work together with the clamping arm connecting plate 221 to complete the work.

[0104] In the present utility model, the clamping detection sensor 29 is used to detect whether a preset condition is triggered when the clamping and rotating device 2 is clamped, thereby issuing a corresponding instruction to the control device.

[0105] More specifically, the clamp arm 22 includes:

[0106] The clamp arm connecting plate 221 is provided with a plurality of mounting holes for fixing the first bolt 267 connecting the clamp arm support 222 and the slider of the linear guide rail 23 and the automatic centering connecting rod mechanism 26;

[0107] A clamp arm support 222, the upper end of which is connected to the clamp arm connecting plate 221, and the upper portion of the clamp arm support 222 is provided with an inwardly bent portion;

[0108] The clamping plate 223 is connected to the lower end of the clamping arm support 222, and both ends of the clamping plate 223 are also connected to guide plates.

[0109] In the utility model, the upper part of the clamping arm support 222 is provided with a certain bending arc shape to make room for conveying the sack 4 in the width and height directions; the clamping plate 223 is a rectangular plate-like structure as a whole, and guide plates integrally formed or fixedly connected with a certain bending angle are provided at both ends of the clamping plate 223 to guide the incoming sack 4 to a certain extent, and at the same time, the flat plate faces the crooked sack 4 for correction when clamping.

[0110] Furthermore, the rotation drive mechanism 3 comprises:

[0111] A rotary cylinder 31, which is connected to one side of the upper part of the frame 11 through a fixed seat;

[0112] A fisheye joint 32, one end of which is connected to the working end of the rotary cylinder 31, and the other end of which is connected to one end of the rotating arm 34 through a locking bolt 33;

[0113] A rotating arm 34, the other end of which is fixedly connected to a rotating shaft 36 via a key;

[0114] A rotating shaft 36, the rotating shaft 36 passes through a hole in the middle of the slewing support 12 and is connected to a corresponding connecting hole of the frame 21;

[0115] An end cover 35 is connected above the connection between the rotating arm 34 and the rotating shaft 36 , and the rotating cylinder 31 is connected to the control device.

[0116] In the present utility model, the rotary cylinder 31 is used to drive the clamping and rotating device 2 to rotate 90° clockwise or counterclockwise, thereby driving the sack 4 to rotate on the belt surface of the conveying device 5.

[0117] Before using the sack rotating machine with the above structure, the operator only needs to move the sack rotating machine with the design structure of the utility model to the designated working position manually or with corresponding transport equipment and place it for use.

[0118] When in use, the utility model is started to operate. When working, first, under the control preset of the control device, the conveying device 5 conveys the sack 4 to the designated position and then stops steadily, and the control device controls the clamping cylinder 25 on the clamping and rotating device 2 to drive the clamping arms 22 at both ends to move toward the center;

[0119] Then, if the clamping arm connecting plate 221 of the clamping and rotating device 2 does not reach the clamping detection sensor 29 within the specified time, that is, the clamping detection sensor 29 does not detect a signal, it means that the sack 4 is clamped in the long direction, and the control device controls the clamping cylinder 25 to drive the clamping arms 22 at both ends to open outwards, and the conveying device 5 continues to convey the sack 4 downstream;

[0120] If the clamping detection sensor 29 detects a signal, it means that the short direction of the sack 4 is clamped. At this time, the control device controls the rotating cylinder 31 to drive the clamping device 2 to rotate 90°. When the rotation end position detection sensor 15 detects a signal, the control device controls the clamping cylinder 25 to drive the clamping arms 22 at both ends to open outward to the limit. Then, the control device controls the rotating cylinder 31 to drive the clamping device 2 to rotate 90°.

[0121] Finally, the rotation starting position detection sensor 14 detects a signal, and the control device sends a command signal to the conveying device 5 to continue conveying the sack 4 downstream; when the next sack 4 arrives at the specified position of the conveying device 5, the system enters the next working cycle until the corresponding work of the utility model is completed. As time goes by, when the work is completed and the sack rotating machine needs to be stopped, the operator only needs to stop the machine by controlling the control device of the utility model. At the same time, the various components of the utility model are cleaned and repaired for the next cycle.

[0122] During the above-mentioned use, the frame 11 is arranged across and directly above the conveying device 5 to support the entire mechanism;

[0123] The slewing support 12 is a deep groove ball bearing, the outer ring of which is installed below the top frame of the frame 11 by bolts, and the inner ring is connected to the frame 21 of the clamping device 2 by bolts; its function is to firmly connect the clamping device 2 to the frame assembly 1, and at the same time ensure that the rotation drive mechanism 3 can smoothly drive the clamping device 2 to rotate;

[0124] Two mounting frames 13 are respectively arranged on one side of the inner cross piece of the frame connecting the rack 11 and one side of the outer side of the frame connecting the rack 11, and the two mounting positions are 90 degrees to the center line of the frame connecting the rack 11;

[0125] A rotation start position detection sensor 14 and a rotation end position detection sensor 15 are respectively mounted on the mounting frame 13;

[0126] There is a through hole in the center of the frame 21, and three groups of concentric connecting holes with different diameters are arranged around the through hole to connect the inner ring of the slewing support 12, the support shaft 261 of the automatic centering connecting rod mechanism 26 and the rotating shaft 36 of the rotating drive mechanism 3 respectively;

[0127] The linear guide rails 23 are symmetrically arranged on both sides of the frame 21 in the length direction. The guide rails are connected to the frame 21, and the slider is connected to the clamping arm 22. The function of the linear guide rails 23 is to ensure that the clamping arms 22 at both ends slide smoothly under the frame 21.

[0128] The first sensing plate 24 is disposed above one end of the frame 21 and is used to cooperate with the rotation end position detection sensor 15 to detect whether the clamping device 2 is rotated to the right position;

[0129] Clamping cylinder 25, two clamping cylinders 25 are respectively arranged on both sides of the frame 21, and the telescopic rod ends of the two clamping cylinders 25 are arranged opposite to each other; the tail of the clamping cylinder 25 cylinder body is connected to the frame 21 through a fixed seat, and the piston rod end is connected to the clamping arm 22 at the corresponding end through a Y-shaped joint 27; the corresponding air inlets of the two clamping cylinders 25 are connected in parallel and controlled by a two-position five-way solenoid valve to ensure the synchronization of the two cylinders. At the same time, a pressure reducing valve is provided at the front end of the air inlet of the two-position five-way solenoid valve to adjust the clamping force, and a one-way throttle valve is provided at the front end of the air inlet of the clamping cylinder 25 to adjust the clamping speed;

[0130] The function of the rotating drive mechanism 3 is to drive the rotating arm 34 to swing through the rotating cylinder 31, so that the rotating shaft 36 drives the frame 21 to rotate. The stroke of the rotating cylinder 31 and the length and installation position of the rotating arm 34 are adjusted and calculated to ensure that the clamping device 2 rotates exactly 90°.

[0131] Example 2

[0132] As the instruction manual Fig. 9 As shown, on the basis of Example 1, the utility model also includes an automatic centering connecting rod mechanism 26, which is arranged below the clamping and rotating device 2 to ensure that the clamping and rotating device 2 clamps the sack 4 in the conveying direction and is located in the center of the conveying device 5.

[0133] As the instruction manual Fig.13 And the instruction manual Fig.14 As shown, specifically, the automatic centering link mechanism 26 is hoisted below the frame 21 through a support shaft 261, and the automatic centering link mechanism 26 includes:

[0134] A support shaft 261, the upper end of the support shaft 261 is connected to the frame 21, and the lower end of the support shaft 261 is connected to the crank arm 262 through a bearing 264 and a locking assembly;

[0135] A crank arm 262, both ends of which are connected to a joint bearing 265 at one end of a corresponding connecting rod 263 through a second bolt 268;

[0136] Connecting rod 263, the connecting rod 263 is symmetrically arranged at both ends of the crank arm 262, and both ends of the connecting rod 263 are connected with joint bearings 265;

[0137] The joint bearing 265 at the other end of the connecting rod 263 is connected to the corresponding clamping arm connecting plate 221 through a spacer sleeve 266 and a first bolt 267 .

[0138] The support shaft 261 of the automatic centering link mechanism 26 is connected to a group of connection holes provided in the middle of the frame 21 .

[0139] In the utility model, the locking assembly comprises a bolt, a nut, a retaining spring and a washer.

[0140] In this embodiment 2, the main function of the automatic centering connecting rod mechanism 26 is that when the two clamping cylinders 25 drive the clamping arms 22 to clamp the sack 4, due to the possible asynchronism of the cylinders or the inconsistent resistance to the deflection of the sack, the automatic centering connecting rod mechanism 26 can correct this deviation, so that the clamping arms 22 at both ends always move equidistantly, thereby ensuring that the sacks 4 of various shapes are guided and centered; it can control the clamping arms 22 at both ends to move equidistantly, thereby ensuring that the sacks 4 of various shapes are guided and centered. The automatic centering connecting rod mechanism of the utility model can balance the asynchronism of the clamping cylinders on both sides, and can also adjust the sack to a centered position to ensure the reliability of the frame. The specific use is the same as that of embodiment 1 and will not be repeated here.

[0141] Finally, it should be noted that the above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A sack rotating machine, comprising a control device and a conveying device (5), characterized in that: Also includes: A frame assembly (1), the frame assembly (1) is arranged across and directly above the conveying device (5); A clamping and rotating device (2), the clamping and rotating device (2) is detachably mounted on the upper part of the frame assembly (1); A rotating drive mechanism (3), the rotating drive mechanism (3) is detachably mounted on one side above the frame assembly (1), and the rotating drive mechanism (3) is connected to the frame (21) of the clamping and rotating device (2) via a rotating shaft (36); Wherein, the clamping and rotating device (2) and the rotating driving mechanism (3) are both connected to the control device.

2. A sack rotating machine according to claim 1, characterized in that: It also comprises a rotation start position detection sensor (14) and a rotation end position detection sensor (15) arranged on the frame assembly (1), wherein the rotation start position detection sensor (14) and the rotation end position detection sensor (15) are both connected to the control device.

3. A sack rotating machine according to claim 1, characterized in that: The frame assembly (1) comprises: A frame (11), the frame (11) comprising a connecting frame and supporting legs respectively connected to the bottom of four corners of the connecting frame; A slewing support (12), wherein the slewing support (12) is a deep groove ball bearing, the outer ring of the slewing support (12) is connected to the frame (11) by bolts, and the inner ring of the slewing support (12) is connected to the frame (21) of the clamping device (2) by bolts; Two mounting frames (13), the two mounting frames (13) are respectively arranged on one side of the inner cross piece of the frame connecting the frame (11) and one side of the outer side of the frame connecting the frame (11), and the two mounting frames (13) are arranged at 90 degrees to the center line of the frame connecting the frame (11); The rotation start position detection sensor (14) is mounted on a mounting frame (13) on one side of the crossbar inside the frame connecting the frame (11), and the rotation end position detection sensor (15) is mounted on a mounting frame (13) on one side of the outer side of the frame connecting the frame (11).

4. A sack rotating machine according to claim 1, characterized in that: The clamping and rotating device (2) comprises: A frame (21), wherein a plurality of groups of concentric connection holes of different diameters are evenly distributed in the middle of the frame (21); Two clamping arms (22), the two clamping arms (22) are located at two ends below the frame (21), and the two clamping arms (22) are slidably connected between two linear guide rails (23); Linear guide rails (23), the linear guide rails (23) are symmetrically arranged on both sides of the frame (21) in the length direction; Two clamping cylinders (25), the two clamping cylinders (25) are respectively arranged on both sides of the frame (21), and the telescopic rod ends of the two clamping cylinders (25) are arranged opposite to each other; The two clamping cylinders (25) are connected to the control device, and the telescopic rod end of each clamping cylinder (25) is connected to the clamping arm (22) at the corresponding end through a Y-shaped joint (27). The clamping arm (22) is driven by the clamping cylinder (25) connected thereto to clamp or release the sack (4).

5. A sack rotating machine according to claim 4, characterized in that: Also includes: A first sensing plate (24), the first sensing plate (24) being arranged above one end of the frame (21); A second sensing plate (28), the second sensing plate (28) is arranged above the connecting piece at the other end of the frame (21); A clamping detection sensor (29), the clamping detection sensor (29) is mounted on the second sensing plate (28), and the clamping detection sensor (29) is connected to the control device; The first sensing plate (24) is used to work in conjunction with the sensing rotation end position detection sensor (15), and the second sensing plate (28) is used to work in conjunction with the sensing rotation start position detection sensor (14); the clamping detection sensor (29) is used to work in conjunction with the clamping arm connecting plate (221).

6. A sack rotating machine according to claim 4, characterized in that: The clamp arm (22) comprises: A clamp arm connecting plate (221), wherein a plurality of mounting holes are provided on the clamp arm connecting plate (221), which are used to fix the slider of the clamp arm support (222) and the linear guide rail (23) and the first bolt (267) of the automatic centering connecting rod mechanism (26); A clamp arm support (222), the upper end of the clamp arm support (222) is connected to the clamp arm connecting plate (221), and the upper part of the clamp arm support (222) is provided with an inward bending portion; The clamping plate (223) is connected to the lower end of the clamping arm support (222), and the two ends of the clamping plate (223) are also connected to guide plates.

7. The sack rotating machine according to claim 1, characterized in that: The rotary drive mechanism (3) comprises: A rotary cylinder (31), the rotary cylinder (31) is connected to one side of the upper part of the frame (11) through a fixed seat; A fisheye joint (32), one end of the fisheye joint (32) is connected to the working end of the rotary cylinder (31), and the other end of the fisheye joint (32) is connected to one end of the rotating arm (34) through a locking bolt (33); A rotating arm (34), the other end of which is fixedly connected to a rotating shaft (36) via a key; A rotating shaft (36), the rotating shaft (36) passes through a hole in the middle of the slewing support (12) and is connected to a corresponding connecting hole of the frame (21); An end cover (35) is also connected above the connection between the rotating arm (34) and the rotating shaft (36), and the rotating cylinder (31) is connected to the control device.

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