Packaging bag opening device

Abstract

The utility model relates to the technical field of packaging equipment, in particular to a packaging bag opening expanding device which is particularly suitable for automatically expanding bag openings of packaging bags with different widths so as to facilitate subsequent packaging procedures such as loading. The utility model provides a packaging bag opening device which comprises two sets of opening assemblies which are oppositely arranged and used for opening packaging bag openings of different bag opening sizes. The driving assembly is arranged on one side of the two groups of opening assemblies and is used for driving the two groups of opening assemblies to carry out opposite or back-to-back horizontal distance adjusting operation; the opening assembly comprises an opening plate, and the opening plate is of a plate-shaped structure extending vertically and downwards, is arranged along the inner side of the bag opening of the packaging bag and can conduct bag opening opening operation outwards in the horizontal direction of the bag opening of the packaging bag. The driving assembly comprises a driving source, and the driving source is arranged on one side of the two supporting plates so as to drive the two supporting plates to conduct opening distance adjusting operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of packaging equipment, in particular to a packaging bag opening device, which is especially suitable for automatically opening packaging bags of different widths to facilitate subsequent packaging processes such as filling. BACKGROUND

[0002] In the packaging industry, filling packaging bags is a common production link. In order to make the filling process smoother and more efficient, it is usually necessary to open the bag opening of the packaging bag. However, the existing packaging bag opening technology has many problems and shortcomings.

[0003] At present, many small packaging sites or simple packaging operations still use manual opening methods, in which the operator directly opens the bag opening of the packaging bag with his hands. This method not only has high labor intensity, but also has low efficiency. Long-time operation can easily cause hand fatigue of the operator, affecting the quality and stability of the opening. In addition, manual opening is difficult to ensure that the force and angle of opening are consistent each time, which may cause the bag opening of the packaging bag to be uneven, affecting the subsequent filling effect.

[0004] Some existing opening devices use fixed-distance opening plate designs, i.e., the distance between the opening plates cannot be adjusted according to the width of the packaging bag. Such devices can only be used for packaging bags of a specific width. When packaging bags of different widths are encountered, they cannot be used normally. If the width of the packaging bag is less than the distance between the opening plates, the opening plates cannot effectively open the bag opening. If the width of the packaging bag is greater than the distance between the opening plates, the opening plates may damage the packaging bag. Therefore, the fixed-distance opening device has poor universality and cannot meet the diversified packaging needs.

[0005] Some opening devices cannot achieve synchronous opening and closing of the opening components on both sides when opening and loosening the bag opening of the packaging bag, which can cause uneven stress on the bag opening of the packaging bag and may cause problems such as bag opening skewing and tearing during the opening process. In addition, the non-synchronous opening and closing operation method also reduces the opening efficiency and increases the time cost of the packaging operation. CONTENT OF THE UTILITY MODEL

[0006] The present application solves the problems of high labor intensity, low efficiency, poor universality, and uneven stress on the bag opening in the existing packaging bag opening technology.

[0007] To solve the above technical problems, the application provides a packaging bag opening device, which comprises opening components, two groups of which are oppositely arranged and used for opening packaging bags with different bag opening sizes; and a driving component arranged on one side of the two groups of opening components and used for driving the two groups of opening components to perform approaching or moving away horizontal distance adjustment operation.

[0008] The opening component further comprises a first sliding block, a first sliding rail and a supporting block. The first sliding block is arranged on one side of the opening plate and connected with the opening plate. The first sliding block is provided on one side with the first sliding rail for linear reciprocating sliding of the first sliding block. One end of the first sliding rail is provided with the supporting block which is nested with the first sliding rail.

[0009] The opening component further comprises a screw rod and a sliding plate. The screw rod is arranged at the back of the first sliding rail and can rotate freely. One side of the opening plate is provided with the sliding plate which is threadedly connected with the screw rod. The upper two ends of the screw rod are respectively provided with a right-hand thread and a left-hand thread for causing the opening plates on the same upper part of the screw rod to move towards each other or move away from each other.

[0010] The driving component further comprises a supporting plate, a rack and a gear. The supporting plate is arranged on one side of the supporting block. One side of the supporting plate is provided with the rack. One side of the rack is provided with the gear which is meshingly connected with the rack.

[0011] The driving component further comprises a second sliding block, a second sliding rail and a bracket plate. The second sliding block is arranged on one side of the supporting plate. One side of the second sliding block is provided with the second sliding rail for linear reciprocating sliding of the second sliding block. One side of the second sliding rail is provided with the bracket plate which serves as a supporting function.

[0012] The driving source is a pneumatic cylinder. Two ends of the pneumatic cylinder are respectively connected with the supporting plate. Or one end of the pneumatic cylinder is connected with one of the supporting plates.

[0013] The driving source is an electric motor. The electric motor is arranged on one side of the gear to drive the gear to rotate.

[0014] The longitudinal section of the opening plate is in the shape of a vertical stroke.

[0015] The lifting assembly further comprises a clamping block, a belt body, a belt pulley and an electric motor. The bracket plate is provided with the clamping block which serves as a clamping connection function. The clamping block is internally provided with the belt body which is fixedly connected with the clamping block. The two ends of the belt body are provided with the belt pulleys which serve as a tensioning function. One side of one of the belt pulleys is provided with the electric motor which is connected with the belt pulley.

[0016] The lifting assembly further comprises a third sliding rail and a third sliding block. The third sliding rail is vertically arranged at the back of the bracket plate. The third sliding block which is connected with the bracket plate is slidably connected to the upper part of the third sliding rail.

[0017] The opening device of the application designs the opening assembly and the driving assembly, so that the opening assembly with adjustable distance between the supporting plates can adapt to packaging bags with different widths, improving the versatility of the device; and the driving assembly can realize the synchronous opening and closing of the opening assembly, ensuring the uniform force on the bag opening, avoiding the problems of bag opening skewing and tearing, improving the opening efficiency and quality, and solving the problems of high labor intensity, low efficiency, poor versatility and uneven force on the bag opening in the prior art.

[0018] The technical scheme of the utility model has the effects that compared with the prior art: the distance between the opening assemblies can be flexibly adjusted to adapt to packaging bags with different widths; at the same time, the opening assemblies can be synchronously opened and closed when opening and loosening the bag opening of the packaging bag, ensuring the uniform force on the bag opening and avoiding the problems of bag opening skewing and tearing; in addition, the structure of the device should be relatively simple, the operation is convenient, the manufacturing cost and maintenance difficulty are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the installation of the embodiment.

[0020] Figure 2 It is a schematic diagram of the overall structure of the embodiment.

[0021] Figure 3 It is a schematic diagram of the opening assembly structure of the first embodiment.

[0022] Figure 4 It is a schematic diagram of the driving assembly structure of the first embodiment.

[0023] Figure 5 It is a schematic diagram of the lifting assembly structure of the second embodiment.

[0024] Figure 6 It is a schematic diagram of the clamping block structure of the lifting assembly.

[0025] Figure 7 It is a schematic diagram of the supporting plate structure of the first embodiment.

[0026] In the figure:

[0027] 1, opening assembly; 11, supporting block; 12, first sliding rail; 13, first sliding block; 14, screw rod; 15, sliding plate; 16, supporting plate; 17, plate seat; 18, hand wheel;

[0028] 2, driving assembly; 21, frame plate; 22, second sliding block; 23, second sliding rail; 24, supporting plate; 25, air cylinder; 26, rack; 27, gear;

[0029] 3, lifting assembly; 31, motor; 32, pulley; 33, belt body; 34, clamping block; 35, third sliding rail; 36, third sliding block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0031] The bag opening supporting device of the present embodiment is mainly used for outwardly expanding and supporting the bag opening of a packaging bag, so as to adapt to the supporting requirements of bag openings of different widths and realize the synchronous opening and closing action of the supporting assembly 1, thereby improving the opening supporting efficiency and stability. The specific structure and use method of the opening supporting device will be described in detail as follows. Figures 1-4 As shown in FIG. 7, the supporting assembly 1 is horizontally and mirror-imaged arranged, including a supporting block 11, a first sliding rail 12, a first sliding block 13, a screw rod 14, a sliding plate 15, a supporting plate 16, a plate seat 17, a hand wheel 18 and the like.

[0032] The specific connection and arrangement mode of each component are as follows. The supporting block 11 is horizontally arranged and serves as a support for the whole supporting assembly 1, thereby providing a stable mounting basis for other components. The supporting block 11 is arranged with the first sliding rail 12 on one side in a nested manner. The first sliding rail 12 is connected with the supporting block 11 through bolts and is vertically arranged. The first sliding rail 12 provides a track for the sliding of the first sliding block 13, thereby ensuring the stable movement of the supporting plate 16. The first sliding rail 12 is arranged with the first sliding block 13 in a linear direction, in parallel and at intervals. The first sliding block 13 is connected with the first sliding rail 12 in a sliding manner. The first sliding block 13 is connected with the downwardly extending supporting plate 16 on one side through bolts. The supporting plate 16 is used for abutting against the inner wall of the bag opening, thereby realizing the function of supporting the bag opening. The longitudinal section of the supporting plate 16 is in the shape of “|”. This special shape can improve the bending resistance and anti-falling ability when supporting the bag opening, thereby ensuring the stability and reliability of the supporting process.

[0033] In order to adjust the distance between the support plates 16, the back of the first slide rail 12 is provided with a screw rod 14 connected with the first slide rail 12 through a bearing block, one side of the support plate 16 is provided with a sliding plate 15 connected with the support plate 16 through a bolt, the upper part of the sliding plate 15 is provided with a slot capable of passing through the first slide rail 12 without contact, and the one end of the sliding plate 15 is threadedly connected with the screw rod 14. When the screw rod 14 rotates, the circumferential movement of the screw rod 14 can be converted into the linear movement of the support plate 16 along the surface of the first slide rail 12, so as to adjust the distance between the support plates 16. The upper end of the supporting block 11 is provided with a horizontally outward extending plate seat 17 connected with the supporting block 11 through a bolt, the upper part of the plate seat 17 is vertically provided with a hand wheel 18 connected with the plate seat 17 through a bearing, and the lower end of the hand wheel 18 is meshed and driven with the screw rod 14 through a bevel gear. By rotating the hand wheel 18, the screw rod 14 can be conveniently driven to rotate, and the distance between the support plates 16 can be adjusted.

[0034] In addition, in order to realize the opposite or back and forth movement of the two support plates 16 on the upper part of the first slide rail 12, the surface of the screw rod 14 is provided with both right-handed threads and left-handed threads, and the right-handed threads and the left-handed threads are respectively distributed on one side of the length direction midpoint of the screw rod 14. In this way, when the screw rod 14 rotates, one of the sliding plates 15 performs right-handed linear movement, and the other sliding plate 15 performs left-handed linear movement, and the two sliding plates 15 perform opposite or back and forth movement, so as to realize the opening operation of the bag opening of different widths.

[0035] The driving assembly 2 is arranged on one side of the two opening assemblies 1, and is used for simultaneously driving the two opening assemblies 1 to perform horizontal opening and closing operation. The driving assembly 2 comprises a frame plate 21, a second sliding block 22, a second slide rail 23, a supporting plate 24, a gas cylinder 25, a rack 26, a gear 27 and the like. The specific structure and connection relationship are as follows. The frame plate 21 is horizontally arranged on one side of the two opening assemblies 1, and provides mounting support for other components. The frame plate 21 is symmetrically provided with the second slide rail 23 arranged along the length direction on both sides of the frame plate 21 along the width direction on one side of the frame plate 21. The second slide rail 23 is fixed on the frame plate 21 through a bolt. The second slide rail 23 is provided with the second sliding block 22 on the upper part. The second sliding block 22 is slidably connected with the second slide rail 23. The second sliding block 22 is provided with the supporting plate 24 on one side. The supporting plate 24 is connected with the second sliding block 22 through a bolt. The supporting plate 24 is used for cooperating with the supporting block 11 or other components of the opening assembly 1, so as to realize the opening and closing action of the opening assembly 1.

[0036] In order to realize the simultaneous opening and closing operation of the two sets of expansion assemblies 1, a pneumatic cylinder 25 is arranged between the two sets of frame plates 21, and the two ends of the pneumatic cylinder 25 are respectively hinged with the frame plates 21. By the extension and retraction movement of the pneumatic cylinder 25, the opening and closing driving force is provided. The back of the supporting plate 24 is transversely provided with a rack 26, and the rack 26 is connected with the supporting plate 24 by bolts. A gear 27 is arranged at the central position of the upper part of the frame plate 21, and the gear 27 is connected with the frame plate 21 by bearings. The gear 27 is meshingly connected with the rack 26. When the pneumatic cylinder 25 is operated to open and close, the supporting plate 24 can be driven to move synchronously backward or toward each other along the surface of the second sliding rail 23 by the meshing between the rack 26 and the gear 27, so as to drive the two expansion assemblies 1 to open and close simultaneously, and realize the expansion and loosening operation of the bag opening of the packaging bag.

[0037] Working principle: The expansion assembly 1 drives the screw rod 14 to rotate by rotating the hand wheel 18. Since the surface of the screw rod 14 has a right-handed thread and a left-handed thread, the sliding plate 15 connected with the screw rod 14 will make linear movement in the right-handed and left-handed directions respectively, thereby driving the supporting plate 16 to move along the surface of the first sliding rail 12, realizing the adjustment of the distance between the supporting plates 16 to adapt to packaging bags of different widths. The driving assembly 2 drives the frame plate 21 to move by starting the pneumatic cylinder 25. The extension and retraction movement of the pneumatic cylinder 25 drives the frame plate 21 to move relatively. At the same time, the rack 26 at the back of the supporting plate 24 is meshingly connected with the gear 27 on the frame plate 21 to drive the supporting plate 24 to move synchronously outward or inward along the surface of the second sliding rail 23 by the second sliding block 22, thereby driving the two expansion assemblies 1 to open and close simultaneously, and realizing the expansion and loosening operation of the bag opening of the packaging bag.

[0038] Method for use: Check whether each part of the bag opening device is firmly installed to ensure that there is no loosening phenomenon. Check whether the gas source connection of the pneumatic cylinder 25 is normal and whether the gas pressure is stable within the appropriate working range. According to the width of the packaging bag to be expanded, preliminarily determine whether the distance between the supporting plates 16 needs to be adjusted. If the distance between the supporting plates 16 needs to be adjusted, the operator holds the hand wheel 18 with his hand and slowly rotates the hand wheel 18. The hand wheel 18 drives the screw rod 14 to rotate through the bevel gear transmission. Since the surface of the screw rod 14 has a right-handed thread and a left-handed thread, the sliding plate 15 connected with the screw rod 14 will make linear movement in the right-handed and left-handed directions respectively, thereby driving the supporting plate 16 to move along the surface of the first sliding rail 12, realizing the adjustment of the distance between the supporting plates 16. When the distance between the supporting plates 16 is adjusted to the appropriate position, stop rotating the hand wheel 18. At this time, the distance between the supporting plates 16 can meet the width requirement of the packaging bag to be expanded.

[0039] The packaging bag to be opened is placed between the two opening assemblies 1, the bag opening is located directly below the support plate 16, the cylinder 25 is started, the cylinder 25 starts to extend, the extension of the cylinder 25 drives the relative movement of the frame plate 21, at the same time, the rack 26 on the back of the support plate 24 is engaged with the gear 27 on the frame plate 21, which drives the support plate 24 to move outward and backward along the surface of the second sliding rail 23 by the second sliding block 22, the backward movement of the support plate 24 drives the opening assembly 1 to move outward, the support plate 16 gradually abuts with the inner wall of the bag opening, and the bag opening is expanded outward, when the cylinder 25 extends to the set position, the bag opening is completely opened, and the subsequent filling operation can be carried out.

[0040] After the filling operation is completed, the cylinder 25 is started to shorten, the shortening movement of the cylinder 25 drives the frame plate 21 to move relatively close, through the engagement of the rack 26 and the gear 27, the support plate 24 moves inward and towards by the second sliding block 22 along the surface of the second sliding rail 23, the opening assembly 1 moves inward as a whole, the support plate 16 gradually separates from the inner wall of the bag opening, the bag opening gradually closes under the action of its own elasticity, when the cylinder 25 shortens to the initial position, the opening assembly 1 returns to the original position, and the opening and loosening operation is completed.

[0041] The packaging bag opening device of the embodiment can efficiently adapt to the opening requirements of bag openings of different widths through the spacing adjustment function of the opening assembly 1 and the synchronous opening and closing function of the driving assembly 2, and improve the efficiency and quality of packaging operation Embodiment 2

[0042] The packaging bag opening device of the embodiment is further improved on the basis of embodiment 1, mainly adding a lifting assembly 3 to adapt to packaging bags of different heights and sizes, thereby further improving the universality and applicability of the device, the specific structure and use method of the opening device will be described in detail below, the packaging bag opening device of the embodiment mainly consists of an opening assembly 1, a driving assembly 2 and a lifting assembly 3, the structures of the opening assembly 1 and the driving assembly 2 are basically the same as those of embodiment 1, which will not be described here, the lifting assembly 3 includes a motor 31, a pulley 32, a belt body 33, a clamping block 34, a third sliding rail 35, a third sliding block 36 and other components.

[0043] The specific connection and arrangement of each component are as follows, Figure 1 , 5As shown in FIG. 6, the third slide rail 35 is arranged vertically at the back of the shelf plate 21 to provide a track for the vertical movement of the shelf plate 21, and the third slide rail 35 is fixed by a suitable fixing method (such as welding, bolt connection, etc.) to ensure its stability during work. The third slide rail 35 is slidably connected with a third sliding block 36 at the upper portion, and the third sliding block 36 is connected with the shelf plate 21 at one side by a bolt connection, which not only ensures that the shelf plate 21 can slide smoothly along the third slide rail 35 with the third sliding block 36, but also facilitates disassembly and maintenance when needed. The back of the shelf plate 21 is arranged with a clamping block 34 for clamping connection, and the clamping block 34 is internally arranged with a belt body 33 fixedly connected thereto. The belt body 33 is any one of a belt, a toothed belt, or a chain. The design of the clamping block 34 enables the belt body 33 to firmly drive the shelf plate 21 to move in the vertical direction, while ensuring the stability and reliability of the transmission.

[0044] Both ends of the belt body 33 are arranged with belt pulleys 32 for tensioning. The belt pulleys 32 are belt pulleys 32, toothed belt pulleys 32, or sprockets that match the belt body 33. One side of one of the belt pulleys 32 is arranged with a motor 31 connected thereto. The motor 31 is connected with the belt pulley 32 through a shaft coupling with a worm gear reducer. The use of such a reducer can reduce the output speed of the motor 31 and increase the output torque, thereby more stably driving the belt pulley 32 to rotate. When the motor 31 is started, power is transmitted to the belt pulley 32 through the shaft coupling, and the belt pulley 32 drives the belt body 33 to rotate. Since the belt body 33 is fixedly connected with the clamping block 34, and the clamping block 34 is connected with the shelf plate 21, the belt body 33 can drive the shelf plate 21 to vertically and linearly slide along the surface of the third slide rail 35 with the assistance of the third sliding block 36, thereby achieving vertical height adjustment of the shelf plate 21 and the opening assembly 1 thereon.

[0045] Working principle: when the height of the opening device needs to be adjusted to adapt to packaging bags of different heights, the motor 31 is started. The motor 31 transmits power to the worm gear reducer through the shaft coupling, and the reducer transmits power to the belt pulley 32. The belt pulley 32 drives the belt body 33 to rotate, and the belt body 33 drives the shelf plate 21 to vertically and linearly slide along the surface of the third slide rail 35 with the assistance of the third sliding block 36, thereby achieving vertical height adjustment of the shelf plate 21 and the opening assembly 1 thereon. When the shelf plate 21 moves to the appropriate height, the motor 31 is turned off. At this time, the opening device can perform the opening operation on packaging bags of different heights.

[0046] Method for use: If the distance between the support plates 16 needs to be adjusted, hold the hand wheel 18 by hand as in the method of Example 1, slowly rotate the hand wheel 18, drive the screw rod 14 to rotate through the bevel gear transmission, and make the sliding plate 15 drive the support plates 16 to move along the surface of the first sliding rail 12 to achieve the adjustment of the distance between the support plates 16. If the height of the opening device needs to be adjusted, start the motor 31, and the motor 31 drives the pulley 32 to rotate through the shaft coupling and worm gear reducer, the pulley 32 drives the belt body 33 to rotate, the belt body 33 drives the shelf plate 21 to vertically and linearly slide along the surface of the third sliding rail 35 with the assistance of the third sliding block 36, and the height position of the shelf plate 21 is observed. When the shelf plate 21 moves to the appropriate height, the motor 31 is turned off, and the height adjustment is completed. The packaging bag to be opened is placed between the two opening assemblies 1, and the bag opening of the packaging bag is approximately located directly below the support plates 16.

[0047] Start the air cylinder 25, and the air cylinder 25 is elongated. Through the meshing transmission of the rack 26 and the gear 27, the supporting plate 24 is driven to move outward and away from each other along the surface of the second sliding rail 23 with the assistance of the second sliding block 22, the support plates 16 gradually abut the inner wall of the bag opening of the packaging bag, and the bag opening is expanded and opened outward, and after the loading and other operations are completed, the air cylinder 25 is started to be shortened. Through the meshing transmission of the rack 26 and the gear 27, the supporting plate 24 is driven to move inward and toward each other along the surface of the second sliding rail 23 with the assistance of the second sliding block 22, the support plates 16 gradually separate from the inner wall of the bag opening of the packaging bag, and thus the opening operation of the bag opening of the packaging bag is completed.

[0048] In actual operation, due to the slight differences in the height specifications of the packaging bags, after the preliminary height adjustment of the opening device is completed, fine adjustment may still be needed. At this time, the motor 31 can be started to run at a low speed, and the rotation direction and rotation angle of the motor 31 are controlled to realize the slight upward or downward movement of the shelf plate 21. For example, if the bag opening position of the packaging bag is slightly lower than the support plates 16, the motor 31 is slowly rotated to make the shelf plate 21 descend a little until the support plates 16 and the bag opening position are perfectly matched. During the fine adjustment, the operator should closely observe the position change of the shelf plate 21 to ensure the accuracy of the adjustment. After the fine adjustment is completed, the motor 31 is turned off in time to avoid unnecessary energy consumption and equipment wear caused by long-time operation of the motor 31.

[0049] For some packaging bags with special shapes or materials, such as bag openings with wrinkles, hard or soft materials, and the like, some special operation methods may need to be taken during the opening process.

[0050] Packaging bags with wrinkled bag openings: When the packaging bag is placed, try to arrange the wrinkled part of the bag opening as flat as possible so that it is evenly distributed between the two opening assemblies 1. If wrinkles still appear during the opening process and affect the opening effect, the action of the air cylinder 25 can be temporarily paused, the position of the bag opening of the packaging bag is manually adjusted gently, and then the opening operation is continued.

[0051] Harder material packaging bag: due to the harder material, more force may be needed to open, the air cylinder 25 can be appropriately increased in the starting air pressure to enhance the opening degree of the support plate 16, at the same time, the operator can observe the opening situation beside, ensure that the support plate 16 can smoothly open the bag opening, avoid the damage of the packaging bag or the deformation of the support plate 16 caused by excessive force.

[0052] Soft material packaging bag: soft material packaging bag is easy to deform in the opening process, which may cause the bag opening to be over opened on one side and under opened on the other side. At this time, the packaging bag opening can be adjusted by manual assistance during the opening process, so that it is evenly stressed, and the extension and retraction speed of the air cylinder 25 can be appropriately reduced, so that the opening process is more stable.

[0053] The packaging bag opening device of the embodiment can more comprehensively adapt to the opening requirements of packaging bags of different sizes by increasing the lifting assembly 3, further improving the efficiency and quality of the packaging operation, and having a wider application prospect.

[0054] In general, terms should be understood in the context in which they are used. For example, the term "one or more" as used herein, depending at least in part upon context, can be used to describe any feature, structure, or characteristic in a singular sense or can be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms such as "a" or "the" again, depending at least in part upon context, can be understood in the singular sense or in the plural sense, excluding the singular sense, using the definition in which the singular "forms" the plural is excluded.

[0055] It should be readily understood that "on," "above," and "upper" in the present disclosure are to be interpreted in the broadest context to mean not only "directly on something" but also "on something with intervening feature(s) or layer(s) therebetween," and "above" or "upper" not only includes the meaning of "above" or "upper" something but also can include the meaning of "above" or "upper" something without intervening feature(s) or layer(s) therebetween (i.e., directly on something).

[0056] In addition, spatially relative terms, such as "under", "below", "lower", "over", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein can likewise be interpreted according to the same.

[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bag opening device characterized by comprising: The utility model provides a kind of bag opening device, including Two sets of opening components (1) are arranged oppositely for opening different sizes of bag opening of packaging bag; Driving component (2) is arranged on one side of two sets of opening components (1) for driving two sets of opening components (1) to adjust the horizontal distance of facing or back; Opening component (1) includes support plate (16), support plate (16) is vertically downward extending plate structure, and it is arranged along the inside of bag opening of packaging bag, can be outward along the horizontal direction of bag opening of packaging bag and carry out bag opening operation; Driving component (2) includes driving source, and driving source is arranged on one side of two support plates (16) to drive two support plates (16) to carry out opening distance adjustment operation.

2. The bag opening device of claim 1, wherein: Opening component (1) further includes first sliding block (13), first sliding rail (12), support block (11), first sliding block (13) is arranged on one side of support plate (16) and is connected with it, first sliding block (13) side is provided with the first sliding rail (12) that can linear reciprocating sliding, one end of first sliding rail (12) is provided with the support block (11) nested arrangement with it.

3. The bag opening device of claim 2, wherein: Opening component (1) further includes screw rod (14), sliding plate (15), screw rod (14) is arranged in the back of first sliding rail (12) and can be freely rotated, one side of support plate (16) is provided with the sliding plate (15) threadedly connected with screw rod (14), and the upper two ends of screw rod (14) are provided with positive screw thread and reverse screw thread respectively, so that the support plate (16) on the upper part of the same screw rod (14) moves towards or away from each other.

4. The bag opening device of claim 2, wherein: Driving component (2) further includes support plate (24), rack (26), gear (27), support plate (24) is arranged on one side of support block (11), one side of support plate (24) is provided with rack (26), one side of rack (26) is provided with gear (27) engaged with it.

5. The bag opening device of claim 4, wherein: Driving component (2) further includes second sliding block (22), second sliding rail (23), frame plate (21), second sliding block (22) is arranged on one side of support plate (24), one side of second sliding block (22) is provided with the second sliding rail (23) that can linear reciprocating sliding, one side of second sliding rail (23) is provided with the frame plate (21) supporting it.

6. The bag opening device of claim 4, wherein: Driving source is air cylinder (25), and two ends of air cylinder (25) are connected with support plate (24) respectively, or one end of air cylinder (25) is connected with one of support plate (24).

7. The bag opening device of claim 4 wherein: Driving source is motor (31), and motor (31) is arranged on one side of gear (27) to drive it to rotate.

8. The bag opening device of claim 1, wherein: The longitudinal section of support plate (16) is " " character.

9. The bag opening device of claim 1, wherein: Further including lifting component (3) for lifting opening component (1) and driving component (2) vertically, lifting component (3) includes clamp block (34), belt body (33), pulley (32), motor (31), frame plate (21) back is provided with clamp block (34) for clamping connection, clamp block (34) is provided with belt body (33) fixedly connected with it in the inside, both ends of belt body (33) are provided with pulley (32) for tensioning, one side of one of pulley (32) is provided with motor (31) connected with it.

10. The bag opening device of claim 9, wherein: The lifting assembly (3) further comprises a third sliding rail (35) and a third sliding block (36), the third sliding rail (35) is vertically arranged at the back of the shelf plate (21), and the upper portion of the third sliding rail (35) is slidably connected with the third sliding block (36) connected with the shelf plate (21).

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