A woven bag friction-breaking bag opening device

Abstract

The present invention discloses a woven bag friction rupture bag opening device, comprising a main body support frame and a rupture bag opening component, wherein the main body support frame is provided with a top plate, an upper plate and a lower plate which are arranged in a ladder-like manner with space between the upper and lower plates; the rupture bag opening component is arranged on the upper plate and between the upper plate and the lower plate, comprising a front bracket fixedly arranged on the bottom surface of the upper plate, a long straight main bracket with one end connected to the front bracket and the other end fixedly arranged on the bottom surface of the upper plate and forming a certain angle α with the upper plate, a slide rail arranged on the main bracket and arranged along the length direction thereof, a movable friction component connected to the slide rail by a slider which can slide freely along the slide rail, and a fixed friction block arranged on the top surface of the lower plate and which can contact the movable friction component during the sliding process, so as to fully utilize plane friction, spring characteristics and the motion characteristics of the inclined crank slider to realize reliable and stable continuous friction rupture bag opening.

Description

Technical Field

[0001] The invention relates to the technical field of industrial automation, and in particular to a friction-breaking bag opening device for a woven bag. Background Art

[0002] Woven bags are widely used in agriculture, chemical industry and construction. In the field of automated production of woven bag packaging, the main current bag opening method is vacuum adsorption. However, vacuum adsorption is only suitable for the situation where the packaging materials and production environment are relatively good. When the woven bag mouth is sticky, the surface quality is poor or there is a lot of environmental dust, the efficiency and reliability of vacuum bag opening cannot meet the requirements of industrialization. In addition, the existing friction or grabbing bag opening methods have the problem of cumbersome and inefficient movements. A large number of woven bag packaging lines can only open bags manually, which increases labor intensity and production costs, and reduces the competitive advantage of enterprises. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the problems existing in the above-mentioned conventional woven bag opening method, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: while solving the problem that the existing vacuum adsorption bag opening method has high requirements on packaging materials and production environment, it also solves the problem that the existing friction or grasping bag opening method has complicated movements and low efficiency, which leads to a large increase in labor costs.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a woven bag friction breaking bag opening device, comprising a main body support frame and a breaking bag opening piece, the main body support frame is provided with a top plate, an upper plate and a lower plate which are arranged in a spaced-apart sequence up and down; the breaking bag opening piece is arranged on the upper plate and between the upper plate and the lower plate, comprising a front bracket fixedly arranged on the bottom surface of the upper plate, a long straight main bracket connected to the front bracket at one end and fixedly arranged on the bottom surface of the upper plate at the other end to form a certain angle with the upper plate, a slide rail arranged on the main bracket and along its length direction, a movable friction component connected to the slide rail by a slider which can slide freely along the slide rail, and a fixed friction block arranged on the top surface of the lower plate and which can contact the movable friction component during the sliding process.

[0007] As a preferred solution of the woven bag friction breaking bag opening device described in the present invention, the movable friction component includes a spring box connected to the slider, a pressure rod connected to the elastic component arranged inside the spring box and arranged along the elastic force direction of the elastic component, and a movable friction block fixedly connected to the bottom end of the pressure rod through a movable friction block fixing plate, and the movable friction block contacts the fixed friction block before the slider slides to the slide rail port.

[0008] As a preferred solution of the woven bag friction tear bag opening device described in the present invention, the spring box includes an upper cover, a lower cover provided with a through hole and a shell with a hollow interior, the elastic component is arranged in the shell, and one end is fixedly connected to the upper cover, and the other end is fixedly connected to the pressure rod which passes through the through hole of the lower cover and the pressure rod bearing arranged inside the lower cover and extends into the shell.

[0009] As a preferred solution of the friction-breaking bag opening device for woven bags of the present invention, a guide piece is provided on the side surface of one end of the movable friction block away from the front bracket.

[0010] As a preferred solution of the woven bag friction-breaking bag opening device described in the present invention, the front bracket includes hanging arms that are symmetrically distributed and connected by cross beams, and the main bracket, the slide rail and the slide block are symmetrically distributed in pairs.

[0011] As a preferred solution of the woven bag friction breaking bag opening device described in the present invention, wherein: one end of the main bracket is rotatably connected to the front bracket through a rotating shaft arranged at the bottom end of the front bracket, and the other end is movably connected to the upper plate through a rear bracket vertically arranged inside the upper plate and rotatable, the spring box and the slider are movably connected through a spring box bracket, the spring box bracket is fixedly connected to the slider, and the spring box is movably connected to the spring box bracket.

[0012] As a preferred solution of the woven bag friction breaking bag opening device described in the present invention, wherein: the breaking bag opening part also includes a power assembly, and the power assembly includes a first motor, a transmission shaft, a crank, a connecting rod and a sleeve arranged on the upper plate, one end of the transmission shaft is connected to the first motor, and the other end is movably connected to the connecting rod through the crank, the connecting rod passes through the sleeve and is connected to the spring box bracket, and the distance H1 between the movable friction block and the fixed friction block and the length H2 of the elastic assembly satisfy the following conditions: H1+H2≥2H3·Sinα, wherein H3 is the length of the crank.

[0013] As a preferred solution of the woven bag friction breaking bag opening device of the present invention, it further includes a bag feeding component, which is arranged on the lower plate and includes a roller bracket, a roller and a roller motor. The fixed friction block is fixedly connected to the lower plate directly below the movable friction assembly through a fixed friction block tray arranged on the top surface of the lower plate; the rollers are symmetrically distributed on both sides of the fixed friction block and both protrude out of the top surface of the lower plate.

[0014] As a preferred scheme of the woven bag friction rupture bag opening device described in the present invention, it further includes an upper bag part, which is arranged on the top plate, and includes an upper bag arm transmission assembly and an upper bag gripper, and the upper bag arm transmission assembly includes a second motor, an axis bracket fixedly connected to the second motor through an upper bag arm rotating axis, a first connecting member and a second connecting member symmetrically distributed and connected through a cylinder bracket and fixedly connected to the axis bracket at one end, the second connecting member is fixedly connected to a rotating rod arranged between the two first connecting members and capable of rotating freely, and the rocker fixedly arranged on the rotating rod is connected to the cylinder bracket through a cylinder; the upper bag gripper includes a gripper pneumatic part, a gripper plate and a bag supporting plate, and symmetrical gripper holes are arranged on the lower plate, and the upper bag gripper can probe into the gripper holes.

[0015] As a preferred solution of the friction-breaking bag opening device for woven bags of the present invention, a group of square tubes are arranged on the top of the main support frame, and hanging rings are arranged on the square tubes.

[0016] Beneficial effects of the invention: The friction opening device for woven bags provided by the invention is easy to operate, flexible to adjust, and has a wide range of applications. It makes full use of plane friction, spring characteristics, and the motion characteristics of the inclined crank slider to achieve reliable and stable continuous friction opening. Compared with the existing vacuum woven bag opening device, it is more reliable. Compared with the existing mechanical woven bag opening device, it integrates the necessary actions of opening the bag, reduces the pause time of the cylinder action, and is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of the woven bag friction tearing bag opening device provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the breaking bag opening component of the woven bag friction breaking bag opening device provided by the present invention.

[0020] Figure 3 A front view of a ripping bag opening component of a woven bag friction ripping bag opening device provided by the present invention.

[0021] Figure 4 The present invention provides a left side view of the ripping bag opening member of the woven bag friction ripping bag opening device.

[0022] Figure 5 The present invention provides a right side view of the ripping bag opening member of the woven bag friction ripping bag opening device.

[0023] Figure 6 A top view of the breaking bag opening component of the woven bag friction breaking bag opening device provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the overall structure of the movable friction component of the woven bag friction breaking bag opening device provided by the present invention.

[0025] Figure 8 A front view of the movable friction component of the woven bag friction breaking bag opening device provided by the present invention.

[0026] Fig. 9 The invention provides a woven bag friction-breaking bag opening device Figure 8 Section view along the AA direction.

[0027] Fig.10 This is a schematic diagram of the overall structure of the bag feeding component of the woven bag friction breaking bag opening device provided by the present invention.

[0028] Fig.11 The present invention provides a left side view of the bag feeding component of the woven bag friction-breaking bag opening device.

[0029] Fig.12 This is a schematic diagram of the overall structure of the upper bag component of the woven bag friction-breaking bag opening device provided by the present invention.

[0030] Fig.13 The present invention provides a right side view of the upper bag component of the woven bag friction-breaking bag opening device.

[0031] Fig.14 A schematic diagram of the working process of the upper bag component of the woven bag friction rupture bag opening device provided by the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example 1

[0039] See also Figures 1 to 6, which is the first embodiment of the woven bag friction rupture bag opening device provided by the present invention: a woven bag friction rupture bag opening device, comprising a main body support frame 100 and a rupture bag opening member 200; the main body support frame 100 is provided with a top plate 101, an upper plate 102 and a lower plate 103 which are arranged in a spaced-apart manner up and down, the rupture bag opening member 200 is arranged on the upper plate 102 and between the upper plate 102 and the lower plate 103, comprising a front bracket 201 fixedly arranged on the bottom surface of the upper plate 102, a long straight main bracket 202 which is connected to the front bracket 201 at one end and fixedly arranged on the bottom surface of the upper plate 102 at the other end to form a certain angle α with the upper plate 102, a slide rail 203 arranged on the main bracket 202 and arranged along its length direction, a movable friction component 205 connected to the slide rail 203 by a slider 204 which can slide freely along the slide rail, and a fixed friction block 206 arranged on the top surface of the lower plate 103 and which can contact the movable friction component 205 during the sliding process.

[0040] Among them, this device is suitable for large bag packaging production lines. The top plate 101, upper plate 102 and lower plate 103 arranged on the main support frame 100 are used to install various components. Since the top plate 101, upper plate 102 and lower plate 103 are arranged in an upper and lower spaced-apart manner, this standardized design makes the installation of subsequent precision components easier and more reliable.

[0041] The bag-breaking component 200 realizes the friction bag-breaking function of the device, wherein the front bracket 201 and the main bracket 202 cooperate with each other by utilizing the motion characteristics of the inclined crank slider, and the slider 204 drives the movable friction component 205 to slide on the slide rail 203. With the design of the inclined main bracket 202, the movable friction component 205 can be moved up and down in the vertical direction, so that it can contact the fixed friction block 206 provided on the top surface of the lower plate 103, and finally realize the friction bag-breaking of the woven bag by utilizing the characteristics of plane friction.

[0042] It should be noted that: the front bracket 201 is arranged vertically with the upper plate 102, and the main bracket 202 is connected to it and presents a certain angle α with the upper plate 102, and the angle is an acute angle. Among them, the front bracket 201 plays the role of controlling the inclination angle and supporting the device. By setting the front bracket 201 of different lengths, the main bracket 202 can present different angles with the upper plate 102 to adapt to different situations.

[0043] Example 2

[0044] See also Figures 7 to 9, which is a second embodiment of the woven bag friction-breaking bag opening device provided by the present invention, which is different from the first embodiment in that: the movable friction component 205 includes a spring box 205a connected to the slider 204, a pressure rod 205c connected to the elastic component 205b arranged inside the spring box 205a and arranged along the elastic force direction of the elastic component 205b, and a movable friction block 205e fixedly connected to the bottom end of the pressure rod 205c through a movable friction block fixing plate 205d. The movable friction block 205e is fixed to the fixed friction block 206 before the slider 204 slides to the end of the slide rail 203. contact; and the spring box 205a includes an upper cover 205a-1, a lower cover 205a-2 provided with a through hole and an internal hollow shell 205a-3, the elastic component 205b is arranged in the shell 205a-3, and one end is fixedly connected to the upper cover 205a-1, and the other end is fixedly connected to the pressure rod 205c which passes through the through hole of the lower cover 205a-2 and the pressure rod bearing 205a-4 arranged inside the lower cover 205a-2 and extends into the shell 205a-3; and a guide piece 205e-1 is arranged on the side of one end of the movable friction block 205e away from the front bracket 201.

[0045] Specifically, the movable friction component 205 utilizes the movement characteristics of a spring. When the movable friction component 205 moves up and down in the vertical direction, since the movable friction block 205e contacts the fixed friction block 206 before the slider 204 slides to the end of the slide rail 203, the movable friction block 205e can continue to move forward by contacting the fixed friction block 206. The pressure rod 205c compresses the elastic component 205b, and the friction force between the movable friction block 205e and the fixed friction block 206 is increased by the elastic force of the elastic component 205b. At this time, when the slider 204 slides to the end of the slide rail 203, the friction force reaches the maximum value, which plays the role of a friction break.

[0046] More specifically, the elastic component 205b is generally configured as a spring, and the spring is detachably connected to the shell 205a-3. When the use time of the spring reaches the upper limit, the ideal elasticity can be regained by replacing the spring, thereby extending the use time of the device; the setting of the pressure rod bearing 205a-4 plays a role in reducing relative friction, and the pressure rod 205c extends into the shell 205a-3 so that the pressure rod 205c always remains tightly connected with the elastic component 205b before the movable friction block 205e contacts the fixed friction block 206, thereby optimizing the setting of the device and enabling the device to output stably.

[0047] Furthermore, the setting of the guide plate 205e-1 prevents the wrinkles and protrusions of the woven bag from hindering the detachment of the friction plate, so that the device can successfully complete the function of bagging the woven bag after the bag is broken and opened.

[0048] The rest of the structure is consistent with that of Example 1.

[0049] Example 3

[0050] See also Figure 2 , which is the third embodiment of the woven bag friction tear bag opening device provided by the present invention, is different from the second embodiment in that: the front bracket 201 includes a symmetrically distributed suspension arm 201b connected by a crossbeam 201a, and there are two main brackets 202, slide rails 203 and sliders 204 that are symmetrically distributed.

[0051] Furthermore, the symmetrical double-sided design of the main bracket 202, the slide rail 203 and the slider 204 makes the structure of the bag-breaking part 200 more stable, wherein the front bracket 201 which plays an inclined role is composed of two suspension arms 201b connected by a cross beam 201a, making the connection between the front bracket 201 and the upper plate 102 and the main bracket 202 more stable.

[0052] The rest of the structure is consistent with that of Example 2.

[0053] Example 4

[0054] See also Figure 2 , which is the fourth embodiment of the woven bag friction tear bag opening device provided by the present invention. It is different from the third embodiment in that: one end of the main bracket 202 is rotatably connected to the front bracket 201 through a rotating shaft 201c arranged at the bottom end of the front bracket 201, and the other end is movably connected to the upper plate 102 through a rear bracket 207 that is vertically arranged inside the upper plate 102 and can rotate, the spring box 205a and the slider 204 are movably connected through the spring box bracket 208, the spring box bracket 208 is fixedly connected to the slider 204, and the spring box 205a is movably connected to the spring box bracket 208.

[0055] Furthermore, the setting of the rear bracket 207 allows the device to adjust the angle α between the main bracket 202 and the upper plate 102 according to actual conditions, thereby adjusting the contact point between the movable friction block 205e and the fixed friction block 206, and ultimately achieving the adjustment of the friction force between the movable friction block 205e and the fixed friction block 206 by controlling the degree to which the pressure rod 205c compresses the elastic component 205b to adapt to different situations, thereby improving the universality of the device.

[0056] The spring box bracket 208 is movably connected to the spring box 205a to achieve an adjustable setting angle between the movable friction component 205 and the lower plate 103, and together with the rear bracket 207, it plays a role in adjusting the angle. Generally, the rear bracket 207 and the spring box bracket 208 are configured to have an arc guide groove. According to the requirements of different displacements and pressures, the angle of the main bracket 202 can be changed by replacing the front bracket 201 of different lengths and by adjusting the position of the main bracket 202 in the arc guide groove of the rear bracket 207, thereby changing the angle of the slide rail 203. Similarly, the position of the contact point can be further changed by adjusting the position of the spring box 205a in the arc guide groove of the spring box bracket 208.

[0057] The rest of the structure is consistent with that of Example 3.

[0058] Example 5

[0059] See also Figures 2 to 6 , which is the fifth embodiment of the woven bag friction rupture bag opening device provided by the present invention. It is different from the fourth embodiment in that: the rupture bag opening member 200 also includes a power assembly 209, and the power assembly 209 includes a first motor 209a, a transmission shaft 209b, a crank 209c, a connecting rod 209d and a sleeve 209e arranged on the upper plate 102. One end of the transmission shaft 209b is connected to the first motor 209a, and the other end is movably connected to the connecting rod 209d through the crank 209c. The connecting rod 209d passes through the sleeve 209e and is connected to the spring box bracket 208, and the distance H1 between the movable friction block 205e and the fixed friction block 206 and the length H2 of the elastic assembly 205b meet the following conditions: H1+H2≥2H3·Sinα, wherein H3 is the length of the crank 209c.

[0060] Furthermore, the setting of the power component 209 makes the device automated, wherein the first motor 209a rotates, driving the crank 209c to rotate at a predetermined speed through the synchronously rotating transmission shaft 209b, driving the connecting rod 209d to move back and forth in a cycle, and finally driving the movable friction component 205 to slide along the slide rail 203, thereby realizing the contact and separation of the movable friction block 205e and the fixed friction block 206.

[0061] It should be noted that the distance H1 between the movable friction block 205e and the fixed friction block 206 and the length H2 of the elastic component 205b meet the following conditions: H1+H2≥2H3·Sinα, where H3 is the length of the crank 209c. Since the power component 209 is provided, such a standard setting of the length will ensure the smooth operation of the device, and there will be no problem of hindering the operation of the power component 209 due to H1 and H2 being less than 2H3·Sinα when the power component 209 is running, and the cyclic reciprocating motion is realized.

[0062] The rest of the structure is consistent with that of Example 4.

[0063] Example 6

[0064] See also Fig.10 and Fig.11, which is the sixth embodiment of the woven bag friction rupture bag opening device provided by the present invention, is different from the fifth embodiment in that: it also includes a bag feeding component 300, the bag feeding component 300 is arranged on the lower plate 103, and includes a roller bracket 301, a roller 302 and a roller motor 303, the fixed friction block 206 is fixedly connected to the lower plate 103 directly below the movable friction component 205 through a fixed friction block tray 103a arranged on the top surface of the lower plate 103; the rollers 302 are symmetrically distributed on both sides of the fixed friction block 206, and both protrude out of the top surface of the lower plate 103.

[0065] Furthermore, after the woven bag enters the device and is placed on the lower plate 103, the bag feeding member 300 sends the woven bag to the specified position under the drive of the roller motor 303, and with the assistance of the sensor, the opening of the woven bag is made exactly flush with the edge of the lower plate 103, thereby realizing the automation of bag feeding.

[0066] The fixed friction block tray 103a and the fixed friction block 206 are connected by screw fixing or welding.

[0067] The rest of the structure is consistent with that of Example 5.

[0068] Example 7

[0069] See also Figures 12-14 , which is the seventh embodiment of the woven bag friction tear bag opening device provided by the present invention, which is different from the sixth embodiment in that it also includes an upper bag member 400, which is arranged on the top plate 101, including an upper bag arm transmission assembly 401 and an upper bag gripper 402, and the upper bag arm transmission assembly 401 includes a second motor 401a, an axis bracket 401c fixedly connected to the second motor 401a through an upper bag arm rotating shaft 401b, a first connecting member 401e symmetrically distributed and connected through a cylinder bracket 401d and fixedly connected to the axis bracket 401c at one end, and a second connecting member 401e; 1f, the second connecting member 401f is fixedly connected to the rotating rod 401g which is arranged between the two first connecting members 401e and can rotate freely, and the rocker 401h fixedly arranged on the rotating rod 401g is connected to the cylinder bracket 401d through the cylinder 401i; the upper bag gripper 402 includes a gripper pneumatic part 402a, a gripper piece 402b and a bag supporting piece 402c, and the lower plate 103 is provided with symmetrical gripper holes, and the upper bag gripper 402 can be inserted into the gripper holes; and a group of square tubes 104 are arranged on the top of the main support frame 100, and the square tubes 104 are provided with hanging rings 104a.

[0070] Among them, the bag-loading component 400 realizes the automated operation of loading the woven bag after the bag is broken and opened. Under the action of the second motor 401a, the synchronously operating shaft bracket 401c drives the first connecting component 401e to operate synchronously; the cylinder 401i extends and retracts, and drives the rotating rod 401g and the second connecting component 401f to rotate within a certain range relative to the first connecting component 401e through the rocker 401h, so that the bag-loading gripper 402 penetrates into the gripper hole to grip the woven bag after the bag is broken, and is again driven by the reverse operation of the second motor 401a, and the bag-loading arm transmission assembly 401 clamps the woven bag and enters the nozzle to complete the bag-loading process.

[0071] Furthermore, the design of the lifting ring 104a on the square tube 104 enables the device to be lifted and moved, which is suitable for large bag packaging production.

[0072] The rest of the structure is consistent with that of Example 6.

[0073] Working principle: After the woven bag enters the device and is placed on the lower plate 103, the roller 302 is driven by the roller motor 303 to send the woven bag to the designated position, and with the help of the sensor, the opening of the woven bag is flush with the edge of the lower plate 103. Driven by the first motor 209a, the slider 204 moves along the linear slide rail 203. Since the slide rail 203 is tilted, the movable friction block 205e will gradually drop until it contacts the woven bag. As the slider 204 continues to move forward, the elastic component 205b begins to compress, and the friction force generated by the movable friction block 205e gradually increases until it can drive the woven bag to move upward, while the downward side of the woven bag is fixed by the friction force of the fixed friction block 206, thereby completing the breach. After the movable friction block 205e reaches the limit position, it starts to return by the crank slider characteristic. Since the woven bag has been broken and the speed at the limit position is zero, the return process can separate the two sides of the bag near the bag mouth by a greater distance than the forward process. When the two sides of the bag near the bag are separated to a certain distance, the upper bag gripper 402 parked at the gripper hole clamps the exposed lower side of the woven bag, and the movable friction block 205e continues to retreat until it is separated from the woven bag. Due to the elasticity of the woven bag itself, the upper side of the woven bag that has lost sufficient friction rebounds and wraps around the triangular bag support piece 402c, thereby completing the bag opening and bag support at the same time. At this time, the upper bag part 400 starts to put the bag. After the woven bag with the bag mouth opened reaches the spout, the subsequent station equipment receives the bag and completes the handover, and then filling can begin. At this time, the cylinder 401i acts to rotate the upper bag gripper 402 relative to the upper bag arm transmission assembly 401 and separate from the spout, thereby completing a complete process of breaking, opening, and putting the bag.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A woven bag friction opening device, characterized in that: include, A main body support frame (100), wherein the main body support frame (100) is provided with a top plate (101), an upper plate (102), and a lower plate (103) which are arranged in a spaced-apart manner up and down; The bag-breaking member (200) is arranged on the upper plate (102) and between the upper plate (102) and the lower plate (103), and comprises a front bracket (201) fixedly arranged on the bottom surface of the upper plate (102), a long straight main bracket (202) connected to the front bracket (201) at one end and fixedly arranged on the bottom surface of the upper plate (102) at the other end to form a certain angle α with the upper plate (102), a slide rail (203) arranged on the main bracket (202) and arranged along the length direction thereof, a movable friction component (205) connected to the slide rail (203) via a slider (204) that can slide freely along the slide rail, and a sliding member (205) arranged on the top of the lower plate (103). The movable friction component (205) comprises a spring box (205a) connected to the slider (204), a pressure rod (205c) connected to an elastic component (205b) disposed inside the spring box (205a) and disposed along the elastic force direction of the elastic component (205b), and a movable friction block (205e) fixedly connected to the bottom end of the pressure rod (205c) via a movable friction block fixing plate (205d), wherein the movable friction block (205e) contacts the fixed friction block (206) before the slider (204) slides to the end of the slide rail (203), and is controlled by The degree to which the pressure rod (205c) compresses the elastic component (205b) ultimately achieves adjustment of the friction force between the movable friction block (205e) and the fixed friction block (206); one end of the main bracket (202) is rotatably connected to the front bracket (201) via a rotating shaft (201c) arranged at the bottom end of the front bracket (201); the other end is movably connected to the upper plate (102) via a rear bracket (207) vertically arranged inside the upper plate (102) and rotatable; the spring box (205a) is movably connected to the slider (204) via a spring box bracket (208); the spring box bracket (208) is fixedly connected to the slider (204); the spring box (205a) is movably connected to the spring The box bracket (208) is movably connected, and the spring box bracket (208) is movably connected to the spring box (205a) to achieve an adjustable setting angle between the movable friction component (205) and the lower plate (103), and together with the rear bracket (207), plays a role in adjusting the angle, and the rear bracket (207) and the spring box bracket (208) are provided with an arc guide groove, and the angle of the main bracket (202) can be changed by replacing the front bracket (201) of different lengths and by adjusting the position of the main bracket (202) in the arc guide groove of the rear bracket (207), thereby changing the angle of the slide rail (203), and similarly, by adjusting the position of the spring box (205a) in the arc guide groove of the spring box bracket (208), the position of the contact point can be further changed.

2. The friction-breaking bag opening device for woven bags according to claim 1, characterized in that: The spring box (205a) comprises an upper cover (205a-1), a lower cover (205a-2) provided with a through hole, and a shell (205a-3) with a hollow interior; the elastic component (205b) is arranged in the shell (205a-3), and one end of the elastic component is fixedly connected to the upper cover (205a-1), and the other end is fixedly connected to the pressure rod (205c) that passes through the through hole of the lower cover (205a-2) and the pressure rod bearing (205a-4) arranged inside the lower cover (205a-2) and extends into the shell (205a-3).

3. The friction-breaking bag opening device for woven bags as claimed in claim 2, characterized in that: A guide piece (205e-1) is provided on the side surface of one end of the movable friction block (205e) away from the front bracket (201).

4. The friction-breaking bag opening device of a woven bag as claimed in claim 1, characterized in that: The front bracket (201) comprises symmetrically distributed suspension arms (201b) connected by a crossbeam (201a), and two of the main bracket (202), the slide rail (203) and the slide block (204) are symmetrically distributed.

5. The friction-breaking bag opening device for woven bags as claimed in claim 1 or 4, characterized in that: The bag-breaking component (200) further comprises a power assembly (209), wherein the power assembly (209) comprises a first motor (209a), a transmission shaft (209b), a crank (209c), a connecting rod (209d) and a sleeve (209e) arranged on the upper plate (102); one end of the transmission shaft (209b) is connected to the first motor (209a), and the other end is movably connected to the connecting rod (209d) via the crank (209c); the connecting rod (209d) passes through the sleeve (209e) and is connected to the spring box bracket (208); and a distance H1 between the movable friction block (205e) and the fixed friction block (206) and a length H2 of the elastic assembly (205b) satisfy the following condition: H1+H2≥2H3·Sinα, wherein H3 is the length of the crank (209c).

6. The friction-breaking bag opening device of a woven bag as claimed in claim 5, characterized in that: It also includes a bag feeding component (300), which is arranged on the lower plate (103) and includes a roller bracket (301), a roller (302) and a roller motor (303); the fixed friction block (206) is fixedly connected to the lower plate (103) directly below the movable friction component (205) via a fixed friction block tray (103a) arranged on the top surface of the lower plate (103); the rollers (302) are symmetrically distributed on both sides of the fixed friction block (206) and both protrude out of the top surface of the lower plate (103).

7. The friction-breaking bag opening device of claim 6, characterized in that: It also includes an upper bag component (400), the upper bag component (400) being arranged on the top plate (101), comprising an upper bag arm transmission assembly (401) and an upper bag gripper (402), the upper bag arm transmission assembly (401) comprising a second motor (401a), a shaft support (401c) fixedly connected to the second motor (401a) via an upper bag arm rotating shaft (401b), a first connecting member (401e) and a second connecting member (401f) symmetrically distributed and connected via a cylinder support (401d) and fixedly connected to the shaft support (401c) at one end, The second connecting member (401f) is fixedly connected to a freely rotatable rotating rod (401g) which is arranged between the two first connecting members (401e); a rocker arm (401h) fixedly arranged on the rotating rod (401g) is connected to the cylinder bracket (401d) via a cylinder (401i); the upper bag gripper (402) comprises a gripper pneumatic part (402a), a gripper plate (402b) and a bag support plate (402c); symmetrical gripper holes are arranged on the lower plate (103), and the upper bag gripper (402) can be inserted into the gripper holes.

8. The friction-breaking bag opening device of claim 7, characterized in that: A group of square tubes (104) is arranged on the top of the main body support frame (100), and a hanging ring (104a) is arranged on the square tubes (104).

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