Opening device of woven bag

Abstract

The utility model relates to the field of woven bags, in particular to a woven bag opening device which comprises a workbench, and grabbing modules used for grabbing the upper bag face and the lower bag face of a woven bag respectively are arranged at the upper end and the lower end of the workbench. The grabbing module comprises a first lead screw located at the upper end of the workbench, a second lead screw located at the lower end of the workbench and a sliding block, a synchronous transmission device is arranged between the first lead screw and the second lead screw and can rotate synchronously, the first lead screw is further provided with a motor, and the output end of the motor is connected with one side of the first lead screw and can drive the first lead screw to rotate. The first lead screw and the second lead screw are movably provided with sliding blocks correspondingly, suction cups are arranged on the vertically opposite end faces of the sliding blocks correspondingly, and electric telescopic rods are arranged between the suction cups and the sliding blocks and used for adjusting the positions of the suction cups. And by arranging the synchronous transmission device, synchronous movement of the suction cups at the upper end and the lower end can be achieved, and a grabbing point can be adjusted to a proper position so as to achieve the optimal opening effect.

Description

Technical Field

[0001] This utility model relates to the field of woven bags, and more particularly to an opening device for woven bags. Background Technology

[0002] Woven bags have a wide range of uses in daily life, often used for packing and repackaging goods, such as in the logistics industry for repackaging express deliveries. Transport personnel need to put the sorted items into woven bags. When using them, the opening of the woven bag needs to be opened first, and the goods are placed into the woven bag by hand.

[0003] Chinese utility model patent (application publication number: CN215707530U) discloses an automatic opening machine for facilitating the filling of woven bags. The machine is equipped with suction cups and an arc-shaped plate. The suction cups hold the two sides of the woven bag, and the opening is opened by retracting an electric telescopic rod. The arc-shaped plate is then inserted into the woven bag by a multi-section telescopic rod and unfolded to fix the opening of the woven bag. However, in actual use, since woven bags come in various sizes, and the suction cups of this device are in a fixed position, they can only grasp woven bags of a single size. If the woven bag is placed off-center from the grasping point, the suction cups do not grasp the opening of the woven bag well, which can easily result in an opening that is too small, affecting the user experience. Summary of the Invention

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] As a further embodiment of this utility model: an opening device for a woven bag, the opening device including a workbench, and gripping modules for gripping the upper and lower surfaces of the woven bag respectively are provided at the upper and lower ends of the workbench.

[0006] The gripping module includes a first lead screw located at the upper end of the worktable, a second lead screw located at the lower end of the worktable, and a slider. A synchronous transmission device is provided between the first lead screw and the second lead screw to rotate synchronously. The first lead screw is also equipped with a motor, and the output end of the motor is connected to one side of the first lead screw to drive the first lead screw to rotate.

[0007] Both the first lead screw and the second lead screw are movably mounted with sliders. Each slider has a suction cup on its upper and lower opposite end faces. An electric telescopic rod is provided between the suction cup and the slider to adjust the position of the suction cup.

[0008] Preferably, the slider has a threaded hole, and the slider is installed on the first lead screw and the second lead screw via a threaded connection.

[0009] Preferably, the synchronous transmission device includes a first transmission wheel, a second transmission wheel, and a belt. The first transmission wheel is installed on the right side of the first lead screw, and the second transmission wheel is also installed on the right side of the second lead screw. The belt is fitted over the first transmission wheel and the second transmission wheel.

[0010] Preferably, the synchronous transmission device includes a first gear, a second gear, and a chain. The first gear is installed on the right side of the first lead screw, and the second gear is also installed on the right side of the second lead screw. The chain meshes with and connects the first gear and the second gear.

[0011] Preferably, the opening device further includes a left support arm, a support arm control structure is provided on one side of the left support arm, the left support arm is located at the upper end of the worktable, a cylinder is provided on one side of the support arm control structure, a connecting rod is provided above the support arm control structure, a right support arm is provided on the side of the support arm control structure away from the left support arm, a rotating shaft is provided on one side of the connecting rod, a support plate is connected to one end of the right support arm, and a rotating motor is installed on the side of the rotating shaft away from the connecting rod.

[0012] Preferably, the support arm control structure controls the distance between the left and right support arms via a cylinder, and the top of the right support arm extends through the pivot to form a connecting end.

[0013] Preferably, one end of the connecting rod is movably connected to the connecting end at the top of the right support arm, and the other end is connected to the left support arm near the movably connected point with the pivot.

[0014] Preferably, the support plates are arranged along the axial direction of the left and right support arms, respectively, and the corners of the support plates are rounded.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By setting up an opening device, the woven bag is placed on the worktable, and the gripping module is used to grip the upper and lower ends of the woven bag. When the bag surface deviates from the gripping point, resulting in poor opening effect, the suction cups at the upper and lower ends can be moved synchronously by setting up a synchronous transmission device, which can adjust the gripping point to a suitable position to achieve the best opening effect.

[0017] 2. By setting up a left support arm, a right support arm, and a support arm control structure, when the rotating motor is powered on, the left and right support arms can be controlled to flip downwards together, and the support plate can be inserted into the opening of the woven bag to open the woven bag, thus improving the opening effect of the device.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the opening device of this utility model.

[0021] Figure 2 This is a schematic diagram of the synchronous transmission device of this utility model.

[0022] Figure 3 This is a schematic diagram of the support arm control structure of this utility model.

[0023] In the diagram: 1-Workbench, 2-Grip module, 21-First lead screw, 22-Second lead screw, 23-Slider, 24-Motor, 25-Suction cup, 26-Electric telescopic rod, 27-Synchronous transmission device, 271a-First transmission wheel, 272a-Second transmission wheel, 273a-Belt, 271b First gear, 272b Second gear, 273b-Chain, 3-Left support arm, 4-Support arm control structure, 41-Cylinder, 42-Connecting rod, 5-Right support arm, 6-Rotating shaft, 7-Support plate, 8-Rotating motor. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please see Figures 1-2In this embodiment of the utility model, an opening device for a woven bag is provided. A gripping module 2 for gripping the upper and lower surfaces of the woven bag is provided at both ends of a workbench 1. The gripping module 2 includes a first lead screw 21 located at the upper end of the workbench 1, a second lead screw 22 located at the lower end of the workbench 1, and a slider 23. A synchronous transmission device 27 is provided between the first lead screw 21 and the second lead screw 22 to allow synchronous rotation. The first lead screw 21 is also equipped with a motor 24, the output end of which is connected to one side of the first lead screw 21 to drive it to rotate. Slider 23 is movably mounted on both the first lead screw 21 and the second lead screw 22. Suction cups 25 are provided on the upper and lower opposite end faces of the slider 23. An electric telescopic rod 26 is provided between the suction cups 25 and the slider 23 to adjust the position of the suction cups 25. The slider 23 has a threaded hole and is threadedly connected to the first lead screw 21 and the second lead screw 22.

[0026] The working principle of this embodiment is as follows: The worker places an unopened woven bag on the workbench 1, and places the part of the woven bag with the opening between the upper suction cup 25 and the lower suction cup 25 of the opening device. When the electric telescopic rod 26 is powered on, the telescopic end can extend to extend the suction cup 25. The positions of the upper and lower suction cups 25 overlap when projected longitudinally. The upper and lower suction cups 25 move synchronously towards the woven bag until they abut against the end face of the woven bag. The two suction cups 25 abut against each other, and the woven bag is located between the two suction cups 25. When the suction cups 25 suck on the end face of the woven bag, the electric telescopic rod 26 is retracted. The upper suction cup 25 sucks on the upper end face of the woven bag and moves upward, and the lower suction cup 25 sucks on the lower end face of the woven bag and moves downward, until the opening of the woven bag is opened under the pull of the suction cups 25, thereby completing the opening of the woven bag.

[0027] Further as Figure 1 As shown in the embodiment of this utility model, the synchronous transmission device 27 includes a first transmission wheel 271a, a second transmission wheel 272a and a belt 273a. The first transmission wheel 271a is installed on the right side of the first lead screw 21, and the second transmission wheel 272a is also installed on the right side of the second lead screw 22. The belt 273a is sleeved over the first transmission wheel 271a and the second transmission wheel 272a.

[0028] The working principle of this embodiment: If the placement of the woven bag deviates from the gripping point, the suction cup 25 needs to be adjusted to a suitable position to grip the woven bag. For example, moving the suction cup 25 to the middle of the woven bag can achieve the best opening effect. When the motor 24 on the device is powered on, the output end of the motor 24 drives the first lead screw 21 connected to the motor 24 to rotate. At the same time, the first lead screw 21 drives the first transmission wheels 271a on both sides to rotate, driving the chain 273b. The chain 273b drives the second transmission wheel 272a on the second lead screw 22 to rotate, thereby driving the second lead screw 22 to rotate. At this time, the lead screws at the upper and lower ends of the device rotate synchronously. The lead screws at the upper and lower ends drive the slider 23 to slide in the lateral direction. The suction cup 25 set at the slider 23 also moves with the slider 23, thereby realizing the synchronous movement between the upper and lower suction cups 25 to the appropriate gripping point.

[0029] Further as Figures 1-2 As shown, in another embodiment of the present invention, the synchronous transmission device 27 includes a first gear 271b, a second gear 272b and a chain 273b. The first gear 271b is installed on the right side of the first lead screw 21, and the second gear 272b is also installed on the right side of the second lead screw 22. The chain 273b meshes with and connects the first gear 271b and the second gear 272b.

[0030] The working principle of this embodiment is as follows: The synchronization device can also achieve synchronous rotation between lead screws through gear meshing. When the position of the woven bag deviates from the gripping point, the motor 24 of the device is energized. The output end of the motor 24 drives the first lead screw 21 connected to the motor 24 to rotate. At the same time, the first lead screw 21 drives the first gears 271b on both sides to rotate, driving the chain 273b. The chain 273b drives the second gear 272b on the second lead screw 22 to rotate. At this time, the lead screws at the upper and lower ends of the device rotate synchronously. The lead screws at the upper and lower ends drive the slider 23 to slide in the lateral direction. The suction cup 25 set at the slider 23 also moves with the slider 23, thereby realizing the synchronous movement between the upper and lower suction cups 25 to the appropriate gripping point.

[0031] Further as Figure 3 As shown, in this embodiment of the present invention, the opening device further includes a left support arm 3. A support arm control structure 4 is provided on one side of the left support arm 3. The left support arm 3 is located at the upper end of the workbench 1. A cylinder 41 is provided on one side of the support arm control structure 4. A connecting rod 42 is provided above the support arm control structure 4. A right support arm 5 is provided on the side of the support arm control structure 4 away from the left support arm 3. A rotating shaft 6 is provided on one side of the connecting rod 42. A support plate 7 is connected to one end of the right support arm 5. A rotating motor 8 is installed on the side of the rotating shaft 6 away from the connecting rod 42.

[0032] The working principle of this embodiment is as follows: When using a new woven bag or a woven bag with an always-closed opening, place it on the workbench 1, and power on the motor to enable the gripping module 2 to grip the upper and lower sides of the woven bag, thus opening the woven bag. The gripping method is as shown in the above embodiment. At this time, the rotating motor 8 controls the rotating shaft 6 to drive the left support arm 3 and the right support arm 5 to rotate downward together until the support plate 7 at the bottom of the left support arm 3 and the right support arm 5 is inserted into the open opening of the woven bag. Then, the support arm control structure 4 opens the left support arm 3 and the right support arm 5 apart, opening the woven bag to both sides, thus achieving automatic opening of the woven bag.

[0033] Further as Figure 3 As shown, in this embodiment of the utility model, the support arm control structure 4 controls the distance between the left support arm 3 and the right support arm 5 through the cylinder 41. The top of the right support arm 5 extends through the rotating shaft 6 to form a connecting end, which facilitates the connection of the connecting end to the rotating motor 8. One end of the connecting rod 42 is movably connected to the connecting end at the top of the right support arm 5, and the other end is connected to the left support arm 3 near the movably connected point with the rotating shaft 6. The support plates 7 are respectively arranged along the axial direction of the left support arm 3 and the right support arm 5, and the corners of the support plates 7 are rounded.

[0034] The support arm control structure 4 with this structure can significantly increase the opening force of the left support arm 3 and the right support arm 5, so as to ensure that the woven bag cannot easily fall off the support piece 7 on the left support arm 3 and the right support arm 5 after being opened.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An opening device for a woven bag, characterized in that, The opening device includes a workbench (1), and the workbench (1) is provided with gripping modules (2) at its upper and lower ends for gripping the upper and lower surfaces of the woven bag respectively; The gripping module (2) includes a first lead screw (21) located at the upper end of the workbench (1), a second lead screw (22) located at the lower end of the workbench (1), and a slider (23). A synchronous transmission device (27) is provided between the first lead screw (21) and the second lead screw (22) to enable synchronous rotation. The first lead screw (21) is also equipped with a motor (24). The output end of the motor (24) is connected to one side of the first lead screw (21) to drive the first lead screw (21) to rotate. The first lead screw (21) and the second lead screw (22) are both movably mounted with sliders (23). Each slider (23) has a suction cup (25) on its upper and lower opposite end faces. An electric telescopic rod (26) is provided between the suction cup (25) and the slider (23) to adjust the position of the suction cup (25).

2. The opening device according to claim 1, characterized in that, The slider (23) has a threaded hole, and the slider (23) is installed on the first lead screw (21) and the second lead screw (22) by threaded connection.

3. The opening device according to claim 1, characterized in that, The synchronous transmission device (27) includes a first transmission wheel (271a), a second transmission wheel (272a), and a belt (273a). The first transmission wheel (271a) is installed on the right side of the first lead screw (21), and the second transmission wheel (272a) is also installed on the right side of the second lead screw (22). The belt (273a) is fitted over the first transmission wheel (271a) and the second transmission wheel (272a).

4. The opening device according to claim 1, characterized in that, The synchronous transmission device (27) includes a first gear (271b), a second gear (272b) and a chain (273b). The first gear (271b) is installed on the right side of the first lead screw (21), and the second gear (272b) is also installed on the right side of the second lead screw (22). The chain (273b) meshes with the first gear (271b) and the second gear (272b).

5. The opening device according to claim 1, characterized in that, The opening device also includes a left support arm (3), a support arm control structure (4) is provided on one side of the left support arm (3), the left support arm (3) is located at the upper end of the workbench (1), a cylinder (41) is provided on one side of the support arm control structure (4), a connecting rod (42) is provided above the support arm control structure (4), a right support arm (5) is provided on the side of the support arm control structure (4) away from the left support arm (3), a rotating shaft (6) is provided on one side of the connecting rod (42), a support plate (7) is connected to one end of the right support arm (5), and a rotating motor (8) is installed on the side of the rotating shaft (6) away from the connecting rod (42).

6. The opening device according to claim 5, characterized in that, The support arm control structure (4) controls the distance between the left support arm (3) and the right support arm (5) through a cylinder (41), and the top of the right support arm (5) extends through the pivot (6) to form a connecting end.

7. The opening device according to claim 5, characterized in that, One end of the connecting rod (42) is movably connected to the connecting end at the top of the right support arm (5), and the other end is connected to the left support arm (3) near the movably connected point with the rotating shaft (6).

8. The opening device according to claim 5, characterized in that, The support plates (7) are respectively arranged along the axial direction of the left support arm (3) and the right support arm (5), and the corners of the support plates (7) are rounded.

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