Clamping device and case unpacking machine with same

Abstract

The utility model provides a clamping device and a case unpacking machine with the same, and the clamping device comprises a base frame which is used for supporting a clamped piece and comprises a feeding end and a discharging end; the pressing mechanism is movably arranged on the base frame in the preset direction, the pressing mechanism comprises a connecting piece, a pressing piece and an elastic piece, the connecting piece and the pressing piece are arranged in a spaced mode, the elastic piece is connected between the connecting piece and the pressing piece, the pressing piece is located on the side, facing the discharging end, of the connecting piece, and the clamped piece is arranged between the feeding end and the pressing piece; the preset direction is parallel to the direction from the feeding end to the discharging end; and the driving piece is connected with the connecting piece and applies driving force for moving towards the discharging end to the connecting piece. According to the technical scheme, the problem that indentations are generated on the surface of the clamped part when a push plate pushes the clamped part to move in the related technology is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of box opening, in particular to a clamping device and a box opening machine having the same. Background Art

[0002] After the cartons are produced, they are folded into a stack for easy transportation. However, when they are used, a carton opener is needed to open the cartons so that products can be placed in the cartons at subsequent stations. When using a carton opener to open the cartons, the cartons need to be placed in the loading chute of the carton opener first.

[0003] In the prior art, multiple cartons are placed side by side in the feeding chute, and the carton opener needs to open the cartons one by one. Therefore, the cartons placed in the feeding chute need to be moved toward the carton opener under the action of a slender push plate, and the movement of the push plate is achieved by a driving structure. When the driving structure drives the push plate to move, an indentation will be pressed on the carton in contact with the push plate, affecting the normal use of the carton. Utility Model Content

[0004] The main purpose of the utility model is to provide a clamping device and a box opener having the same, so as to solve the problem in the related art that when a push plate pushes a clamped piece to move, an indentation is generated on the surface of the clamped piece.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a clamping device is provided, including: a base frame for supporting a clamped piece, the base frame including a feed end and a discharge end; a clamping mechanism, movably arranged on the base frame along a preset direction, the clamping mechanism including a connecting piece and a clamping piece arranged at intervals and an elastic piece connected between the connecting piece and the clamping piece, the clamping piece is located on the side of the connecting piece facing the discharge end, the clamped piece is arranged between the feed end and the clamping piece, and the preset direction is parallel to the direction from the feed end to the discharge end; a driving piece, the driving piece is connected to the connecting piece, and drives the connecting piece to move toward the discharge end.

[0006] Furthermore, the pressing member is a pressing frame, and the connecting member is a connecting frame.

[0007] Furthermore, the clamping device also includes a guide member, the elastic member is sleeved on the guide member, the first end of the guide member is fixedly connected to the clamping member, and the second end of the guide member passes through the connecting member along a preset direction and is movably connected to the connecting member.

[0008] Furthermore, a guide hole is provided on the connecting member, and the clamping device also includes a fastener, and the guide member passes through the guide hole and is connected to the fastener.

[0009] Furthermore, the guide members include a plurality, the elastic members include a plurality, the plurality of guide members and the plurality of elastic members are arranged in one-to-one correspondence, the elastic members are springs, and the guide members are guide rods.

[0010] Furthermore, the driving member is a rodless cylinder, and the driving member has a working state and a stopping state. When the driving member is in the stopping state, the connecting member can move in a preset direction toward a direction away from the feeding end.

[0011] Furthermore, the clamping device also includes a guide structure, which extends along a preset direction and is arranged between the base frame and the driving member.

[0012] According to another aspect of the present invention, a box opener is provided, comprising a clamping device and a propping device, wherein the clamping device is the above-mentioned clamping device, and the propping device is arranged downstream of the clamping device.

[0013] Furthermore, the carton opener also includes a stopper, which is arranged at the discharge end of the base frame, and the clamped part is arranged between the pressing part and the stopper.

[0014] Furthermore, the clamped member includes a plurality of sheet-like boxes stacked on top of each other, and the stopper has a stopping state and an avoiding state. When the stopper is in the avoiding state, the opening device clamps and opens the sheet-like boxes to the box-like boxes.

[0015] The technical solution of this embodiment is applied, and the base frame is used to support the clamped part, and the base frame includes a feed end and a discharge end. The clamping mechanism is movably arranged on the base frame along a preset direction, and the preset direction is parallel to the direction from the feed end to the discharge end. The clamping mechanism includes a connecting member, a clamping member and an elastic member, and the connecting member and the clamping member are arranged at intervals, and the elastic member is arranged between the connecting member and the clamping member. The clamping member is arranged on the side of the connecting member facing the discharge end, and the clamped part is arranged between the discharge end of the base frame and the clamping member. The driving member is connected to the connecting member, and the driving member drives the connecting member to move toward the discharge end. Through the above-mentioned arrangement, the driving member can drive the connecting member to move toward the discharge end, and the connecting member can drive the clamping member to move toward the discharge end, and then the clamped part arranged between the clamping member and the discharge end can move along the preset direction on the base frame under the action of the clamping member. When the pressing member and the clamped member are squeezed, the pressing member can move toward the direction close to the connecting member to squeeze the elastic member, so that the contact between the pressing member and the clamped member is softer, avoiding the clamped member from having an indentation on the surface due to the squeezing of the pressing member, that is, avoiding the use of the clamped member being affected. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that when the push plate pushes the clamped member to move, an indentation is generated on the surface of the clamped member. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a clamping device according to the utility model is shown;

[0018] Figure 2 Shows Figure 1 A partial enlarged schematic diagram of the clamping device at A;

[0019] Figure 3 Shows Figure 1 A partial enlarged schematic diagram of the clamping device at B;

[0020] Figure 4 Shows Figure 1 A schematic cross-sectional view of a clamping mechanism of a clamping device;

[0021] Figure 5 A three-dimensional structural schematic diagram of an embodiment of a box opener according to the utility model is shown;

[0022] Figure 6 Shows Figure 5 A schematic diagram of the three-dimensional structure of the case opening machine when the opening device of the case opening machine opens the sheet-shaped case body into a box-shaped case body;

[0023] Figure 7 Shows Figure 6 A partial enlarged schematic diagram of point C of the box opener.

[0024] The above drawings include the following reference numerals:

[0025] 10. Base frame; 11. Feed end; 12. Discharge end; 20. Clamping mechanism; 21. Connecting piece; 211. Connecting frame; 212. Guide hole; 22. Clamping piece; 221. Clamping frame; 23. Elastic piece; 231. Spring; 30. Driving piece; 31. Rodless cylinder; 40. Guide piece; 41. Guide rod; 50. Fastener; 60. Guide structure; 100. Opening device; 110. Stopper. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] like Figure 1 As shown, the clamping device of this embodiment includes: a base frame 10, a clamping mechanism 20, and a driving member 30. The base frame 10 is used to support the clamped member, and the base frame 10 includes a feed end 11 and a discharge end 12. The clamping mechanism 20 is movably arranged on the base frame 10 along a preset direction, and the clamping mechanism 20 includes a connecting member 21 and a clamping member 22 arranged at intervals, and an elastic member 23 connected between the connecting member 21 and the clamping member 22, the clamping member 22 is located on the side of the connecting member 21 facing the discharge end 12, and the clamped member is arranged between the feed end 11 and the clamping member 22, and the preset direction is parallel to the direction from the feed end 11 to the discharge end 12. The driving member 30 is connected to the connecting member 21, and drives the connecting member 21 to move toward the discharge end 12.

[0030] The technical solution of this embodiment is applied, and the base frame 10 is used to support the clamped part, and the base frame 10 includes a feed end 11 and a discharge end 12. The clamping mechanism 20 is movably arranged on the base frame 10 along a preset direction, and the preset direction is parallel to the direction from the feed end 11 to the discharge end 12. The clamping mechanism 20 includes a connecting member 21, a clamping member 22 and an elastic member 23, and the connecting member 21 and the clamping member 22 are arranged at intervals, and the elastic member 23 is arranged between the connecting member 21 and the clamping member 22. The clamping member 22 is arranged on the side of the connecting member 21 facing the discharge end, and the clamped part is arranged between the discharge end 12 of the base frame 10 and the clamping member. The driving member 30 is connected to the connecting member 21, and the driving member 30 drives the connecting member 21 to move toward the discharge end 12. Through the above arrangement, the driving member 30 can drive the connecting member 21 to move toward the discharge end 12, and the connecting member 21 can drive the pressing member 22 to move toward the discharge end 12, and then the clamped member disposed between the pressing member 22 and the discharge end 12 can move along a preset direction on the base frame 10 under the action of the pressing member 22. When compression occurs between the pressing member 22 and the clamped member, the pressing member 22 can move toward the direction close to the connecting member 21 to compress the elastic member 23, so that the contact between the pressing member 22 and the clamped member is softer, avoiding the clamped member from having an indentation on the surface due to the compression of the pressing member, that is, avoiding the use of the clamped member being affected. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that when the push plate pushes the clamped member to move, an indentation will be generated on the surface of the clamped member.

[0031] It should be noted that, in this embodiment, the clamped piece refers to a sheet-like carton, and the clamped piece includes a plurality of pieces. Of course, in an embodiment not shown in the figure, the material of the clamped piece can also be plastic.

[0032] Specifically, when the elastic member 23 is squeezed, the elastic member 23 applies elastic force to the pressing member 22 toward the feeding end 11. A guide right angle plate is also provided on the base frame, the first end of the guide right angle plate is the feeding end, and the second end of the guide right angle plate is the discharging end.

[0033] like Figure 1 As shown, in this embodiment, the pressing member 22 is a pressing frame 221, and the connecting member 21 is a connecting frame 211. Compared with the slender strip push plate, the pressing frame 221 can increase the contact area with the clamped member, and avoid the clamped member and the pressing frame 221 contact area being subjected to a large pressure when the pressure remains unchanged due to the small contact area, which will cause indentations on the surface of the clamped member, that is, the pressing frame 221 can avoid indentations on the surface of the clamped member. The connecting frame 211 makes it easier to manufacture the connecting member 21.

[0034] Preferably, the connection frame 211 and the pressing frame 221 are welded by using 4×4 mm thick square steel plates. A connection rod is provided between the connection frame 211 and the driving member 30 .

[0035] like Figure 1 and Figure 4 As shown, in this embodiment, the clamping device further includes a guide member 40, the elastic member 23 is sleeved on the guide member 40, the first end of the guide member 40 is fixedly connected to the pressing member 22, and the second end of the guide member 40 passes through the connecting member 21 along a preset direction and is movably connected to the connecting member 21. The guide member 40 allows the elastic member 23 to move more smoothly when being squeezed between the pressing member 22 and the connecting member 21, and also allows the pressing member 22 to move more smoothly relative to the connecting member 21. The second end of the guide member 40 passes through the connecting member 21 along a preset direction and is movably connected to the connecting member 21, that is, when the pressing member 22 is squeezed, the pressing member 22 can move toward the direction close to the connecting member 21, and then, under the action of the elastic member 23, it can offset part of the squeezing force between the pressing member 22 and the clamped member, thereby preventing the clamped member from being damaged.

[0036] like Figure 4 As shown, in this embodiment, a guide hole 212 is provided on the connecting member 21, and the clamping device further includes a fastener 50, and the guide member 40 passes through the guide hole 212 and is connected to the fastener 50. The guide hole 212 allows the guide member 40 to move more smoothly, and the fastener 50 is connected to the guide member 40, and the fastener 50 is arranged on a side of the connecting member 21 away from the pressing member 22, that is, under the action of the fastener 50, the connection between the connecting member 21 and the pressing member 22 through the guide member 40 is more stable.

[0037] It should be noted that the fastener 50 is a nut.

[0038] like Figure 1 and Figure 4 As shown, in this embodiment, the guide members 40 include a plurality of guide members, the elastic members 23 include a plurality of guide members 40 and the elastic members 23 are arranged one by one, the elastic members 23 are springs 231, and the guide members 40 are guide rods 41. The above arrangement makes the relative movement of the pressing member 22 and the connecting member 21 smoother, and also makes it possible for the plurality of elastic members 23 to offset more of the squeezing force between the clamped member and the pressing member 22 when being squeezed, that is, the force on the clamped member is smaller, and avoids the pressing member 22 from pressing an indentation on the surface of the clamped member.

[0039] like Figure 1As shown, in this embodiment, the driving member 30 is a rodless cylinder 31, and the driving member 30 has a working state and a stopping state. When the driving member 30 is in the stopping state, the connecting member 21 can move in a preset direction toward a direction away from the feeding end 11. The rodless cylinder 31 can apply a driving force to the connecting member 21 to move toward the discharging end, and then the connecting member 21 can apply a driving force to the pressing member 22 to move toward the discharging end 12. At this time, the driving member 30 is in a working state. When the driving member 30 is in the stopping state, the connecting member 21 can move in a preset direction toward a direction away from the feeding end 11, so that the clamped member can be placed between the pressing member 22 and the feeding end 11.

[0040] It should be noted that the clamping device also includes a control member, which can control the driving member 30 to switch between a working state and a stopped state. When the clamped member is placed, the control member controls the driving member 30 to switch from the stopped state to the working state, and the rodless cylinder 31 pushes the pressing member 22 to move toward the clamped member, and the clamped member is clamped between the pressing member and the discharge end 12, that is, the clamped member is clamped between the pressing member 22 and the stopper 110.

[0041] like Figure 1 As shown, in this embodiment, the clamping device further includes a guide structure 60, which extends along a preset direction and is disposed between the base frame 10 and the driving member 30. The guide structure 60 allows the driving member 30 to move more smoothly relative to the base frame 10, and can also guide the movement of the driving member 30. The guide structure 60 can also prevent the clamping mechanism 20 from being offset during movement.

[0042] Preferably, the guide structure 60 is a guide block and a guide rod. The guide rod is arranged on the base frame, and a connecting hole for the guide rod to pass through is arranged on the guide block.

[0043] like Figure 5 As shown, the box opener of this embodiment includes a clamping device and a propping device 100, wherein the clamping device is the above-mentioned clamping device, and the propping device 100 is arranged downstream of the clamping device. When the above-mentioned clamping device is in use, the elastic member 23 is arranged to offset the squeezing force between the clamped part and the pressing member 22, and the pressing member 22 can move toward the direction close to the connecting member 21, so that the contact between the pressing member 22 and the clamped part is softer, avoiding the generation of indentations on the surface of the clamped part. The box opener with the above-mentioned clamping device also has the above-mentioned advantages. The propping device 100 can prop the clamped part open.

[0044] like Figure 2 , Figure 3 as well as Figures 5 to 7As shown, in this embodiment, the box opener further includes a stopper 110, which is disposed at the discharge end 12 of the base frame 10, and the clamped part is disposed between the pressing part 22 and the stopper 110. The stopper 110 can stop the clamped part, so that the clamped part can be stably placed between the pressing part 22 and the stopper 110.

[0045] like Figure 6 As shown, in this embodiment, the clamped member includes a plurality of sheet-like boxes stacked on each other, and the stopper 110 has a stopping state and an avoiding state. When the stopper 110 is in the avoiding state, the opening device 100 clamps and opens the sheet-like box to a box-like box. When the stopper 110 is in the stopping state, the stopper 110 can stop the clamped member between the pressing member 22 and the stopper 110. When the stopper 110 is in the avoiding state, the opening device 100 can clamp the one of the plurality of sheet-like boxes closest to the discharge end 12 and open the box for subsequent use.

[0046] It should be noted that a sheet-like box body refers to a box body whose four side walls are attached together, and a box-like box body refers to a box body whose four side walls are separated, and items can be placed inside the box body.

[0047] A guide slope is provided on the side of the first stop plate away from the clamping member. In the direction from the second stop plate to the first stop plate, the distance between the guide slope and the clamping member gradually increases. The guide slope makes the process of the second stop plate pushing the sheet box body toward the first stop plate smoother.

[0048] Preferably, in this embodiment, if Figure 2 , Figure 3 as well as Figure 6 As shown, the stopper 110 includes a first stopper plate and a second stopper plate arranged below the first stopper plate, and the first stopper plate and the second stopper plate extend in the vertical direction. The box opener also includes a conveying device, which is arranged on the base frame 10 and adjacent to the stopper 110, and the stopper 110 is located between the sheet-like box and the conveying device. When the stopper 110 is in an avoidance state, the first stopper plate pushes a sheet-like box to move in a direction close to the second stopper plate, the pressing member 22 pushes the remaining sheet-like box to move in a direction close to the first stopper plate, and then the second stopper plate pushes the clamped member to move along the guide slope in a direction close to the opening device 100, thereby enabling the sheet-like box to enter the opening device 100, the opening device 100 opens the box, and the conveying device conveys the box opened by the opening device 100.

[0049] A pressing groove is also provided on the first stop plate. The pressing groove and the guiding inclined surface are respectively provided on two side surfaces of the first stop plate along a preset direction. When the first stop plate pushes the sheet-like box body toward the second stop plate to move in a direction close to the second stop plate, the pressing groove is away from the top surface of the second stop plate and abuts against the sheet-like box body.

[0050] Specifically, the opening device 100 includes a first adsorption member and a second adsorption member, and the first adsorption member is located on a side of the second adsorption member close to the pressing member 22. The first adsorption member adsorbs the first side surface of the sheet-like box body, and the second adsorption member adsorbs the second side surface of the sheet-like box body, and the first side surface and the second side surface are arranged adjacent to each other, and then the second adsorption member swings at a preset angle relative to the first adsorption member, and the preset angle is 90°, so that the sheet-like box body is opened into a box-like box body.

[0051] It should be noted that the box body also includes a third side and a fourth side connected in sequence, the second side is connected between the first side and the third side, and the fourth side is connected between the first side and the third side. The box body also includes a first bottom plate flexibly connected to the first side, a second bottom plate flexibly connected to the second side, a third bottom plate flexibly connected to the third side, and a fourth bottom plate connected to the fourth side. The box opener also includes a folding plate device, which includes two first bent plates arranged opposite to each other and two second bent plates arranged opposite to each other, and the two second bent plates are arranged between the two first bent plates. When the sheet-like box body is stretched open to form a box-like box body, the first adsorbent and the second adsorbent simultaneously drive the box-like box body to move in the direction close to the base frame, and then the two first bent plates swing at the same time to bend the first bottom plate and the second bottom plate toward the inside of the box body, and the two second bent plates swing at the same time to bend the third bottom plate and the fourth bottom plate toward the inside of the box body. After the first bottom plate, the second bottom plate, the third bottom plate and the fourth bottom plate are all bent, the conveying device conveys the box body in the direction away from the pressing member.

[0052] In this embodiment, the conveying device is a push plate, a guide shaft is arranged between the push plate and the base frame, and the push plate is arranged adjacent to the stopper. The first bent plate and the second bent plate are both located below the conveying device.

[0053] By using the clamping device of this embodiment, less space can be occupied compared to when using a slender strip push plate. Specifically, when using a slender strip push plate, if a sheet-shaped box needs to be placed, the slender strip push plate is first swung toward the side of the clamping device. When the push plate is swung, the protective doors provided on both sides of the clamping device need to be opened, which occupies more space and may also pose a safety hazard. At the same time, the work intensity of the staff is high. When adding a clamped part using the clamping device of this embodiment, it is only necessary to switch the driving part 30 to the stop state and move the clamping mechanism 20 in a direction away from the discharge end 12 to add the clamped part. Adding a clamped part is relatively easy.

[0054] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A clamping device, characterized in that: include: A base frame (10) for supporting a clamped part, wherein the base frame (10) comprises a feed end (11) and a discharge end (12); A clamping mechanism (20) is movably arranged on the base frame (10) along a preset direction, the clamping mechanism (20) comprises a connecting member (21) and a clamping member (22) arranged at intervals, and an elastic member (23) connected between the connecting member (21) and the clamping member (22), the clamping member (22) is located on a side of the connecting member (21) facing the discharge end (12), the clamped member is arranged between the feed end (11) and the clamping member (22), and the preset direction is parallel to the direction from the feed end (11) to the discharge end (12); A driving member (30) is connected to the connecting member (21) and drives the connecting member (21) to move toward the discharge end (12).

2. The clamping device according to claim 1, characterized in that The pressing member (22) is a pressing frame (221), and / or the connecting member (21) is a connecting frame (211).

3. The clamping device according to claim 1, characterized in that: The clamping device further comprises a guide member (40), the elastic member (23) is sleeved on the guide member (40), a first end of the guide member (40) is fixedly connected to the pressing member (22), and a second end of the guide member (40) passes through the connecting member (21) along a preset direction and is movably connected to the connecting member (21).

4. The clamping device according to claim 3, characterized in that: The connecting member (21) is provided with a guide hole (212), the clamping device further comprises a fastener (50), and the guide member (40) passes through the guide hole (212) and is connected to the fastener (50).

5. The clamping device according to claim 3, characterized in that: The guide members (40) include a plurality of guide members (40), the elastic members (23) include a plurality of guide members (40) and the elastic members (23) are arranged in a one-to-one correspondence, and / or the elastic member (23) is a spring (231), and the guide member (40) is a guide rod (41).

6. The clamping device according to any one of claims 1 to 5, characterized in that The driving member (30) is a rodless cylinder (31), and the driving member (30) has a working state and a stopping state. When the driving member (30) is in the stopping state, the connecting member (21) can move in a preset direction toward a direction away from the feeding end (11).

7. The clamping device according to any one of claims 1 to 5, characterized in that The clamping device further comprises a guide structure (60), wherein the guide structure (60) extends along a preset direction, and the guide structure (60) is arranged between the base frame (10) and the driving member (30).

8. A box opening machine, comprising a clamping device and a propping device (100), characterized in that: The clamping device is the clamping device according to any one of claims 1 to 7, and the expansion device (100) is arranged downstream of the clamping device.

9. The box opening machine according to claim 8, characterized in that: The box opening machine further comprises a stopper (110), wherein the stopper (110) is arranged at the discharge end (12) of the base frame (10), and the clamped member is arranged between the pressing member (22) and the stopper (110).

10. The box opening machine according to claim 9, characterized in that: The clamped member comprises a plurality of sheet-like boxes stacked on top of each other, the stopper (110) has a stopping state and an avoidance state, and when the stopper (110) is in the avoidance state, the opening device (100) clamps and opens the sheet-like boxes to box-like boxes.

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