Bag clamping mechanism, packaging device and unpacking device

Abstract

The utility model relates to a bag clamping mechanism, a packing device and an unpacking device, the bag clamping mechanism comprises a fixing seat, a clamping claw and a pushing piece, the fixing seat is installed on a supporting mechanism, a fixing pipe is arranged in the center of the fixing seat in a penetrating mode, and a bag is arranged on the fixing pipe in a sleeved mode; the multiple clamping claws are arranged on the fixing base in a sliding mode, and the clamping claws are arranged around the fixing pipe. The pushing piece is used for driving the clamping claws to synchronously get close to or get away from the fixing pipe so as to clamp or loosen the bag. According to the bag clamping mechanism, the clamping claws are arranged on the fixing base in the sliding mode, the clamping claws are arranged around the fixing pipe, the pushing piece drives the clamping claws to synchronously get close to the fixing pipe, and a bag is clamped under the cooperation of the clamping claws and the fixing pipe; the bag clamping mechanism is simple in structure and convenient to machine and use.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a bag clamping mechanism, a packaging device and an unpacking device. Background Art

[0002] Ton bags are large packaging bags, usually used to pack bulk items. As ton bags are heavy, mechanical equipment is usually required for bagging and unpacking. Ton bag packaging machines are equipment used to pack materials in ton bags, and ton bag unpacking machines are equipment used to unpack materials. Ton bag packaging machines and unpacking machines are widely used in the fields of chemical industry, building materials, metallurgy, food, etc. to improve production efficiency and reduce labor intensity.

[0003] At present, ton bag packaging machines and unpacking machines generally include bag clamping mechanisms, such as Figure 1 As shown in the figure, the bag clamping mechanism is a semicircular stainless steel clamping claw, which clamps the feeding port of the ton bag from the outside to the inside under the action of the cylinder. However, it has the following disadvantages:

[0004] 1. The curvature of the clamping jaws must be highly consistent with the curvature of the feeding port of the ton bag. It is difficult to process, easy to rebound, and not tightly sealed.

[0005] 2. The opening of the ton bag is larger than the feeding opening of the ton bag. Wrinkles will appear when the bag is clamped. The clamping jaws push from the outside to the inside, and the wrinkles are concentrated in one place, causing the clamping jaws to get stuck frequently. It is necessary to manually fold the excess bag opening and then clamp the bag, which is time-consuming and has a low degree of automation. Utility Model Content

[0006] Based on this, it is necessary to provide a bag clamping mechanism, a packaging device and an unpacking device that are easy to use in order to solve the above problems.

[0007] A bag clamping mechanism comprises a fixed seat, a clamping claw and a pushing member, wherein the fixed seat is installed on a supporting mechanism, a fixing tube passes through the center of the fixed seat, and a bag is sleeved on the fixing tube; there are multiple clamping claws, each of which is slidably mounted on the fixed seat, and each of which is arranged around the fixing tube; the pushing member is used to drive each of the clamping claws to synchronously approach or move away from the fixing tube to clamp or release the bag.

[0008] In one embodiment, the clamping claw includes a first connection portion, a second connection portion and a third connection portion connected in sequence, the first connection portion is used to abut the fixing tube, the second connection portion is slidably disposed on the fixing seat, and the third connection portion is used to abut the pushing member.

[0009] In one embodiment, the pushing member includes a supporting portion and a plurality of boss portions, wherein the boss portions are used to abut against the third connecting portion; each of the boss portions is arranged along a circumference of the supporting portion, and the boss portions correspond one-to-one to the third connecting portion.

[0010] In one embodiment, a side surface of the third connection portion is a first inclined surface, and a side surface of the boss portion is a second inclined surface corresponding to the first inclined surface.

[0011] In one embodiment, a plurality of elastic members are further included, one end of each elastic member abuts against the third connecting portion, and the other end of each elastic member abuts against the fixing seat.

[0012] In one embodiment, the fixed seat includes a surrounding plate portion, a guide rail portion and a baffle portion, the guide rail portion is connected to the surrounding plate portion, and the clamping claw is slidably disposed on the guide rail portion; the baffle portion is connected to the surrounding plate portion; the guide rail portion and the baffle portion are both multiple and correspond one to one, and each guide rail portion is arranged along the circumference of the surrounding plate portion.

[0013] In one of the embodiments, a sealing member is further included. The sealing member is installed at one end of the clamping claw close to the fixing tube, and the sealing member is used to abut against the bag. There are multiple clamping claws and multiple sealing members, and they correspond one to one.

[0014] In one embodiment, the sealing member includes a mounting portion and an elastic portion connected to the mounting portion, the mounting portion is mounted on the clamping claw, and the elastic portion is used to abut against the bag.

[0015] A packaging device comprises the bag clamping mechanism mentioned above.

[0016] A package unpacking device comprises the bag clamping mechanism mentioned above.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] The bag clamping mechanism of the utility model is slidably arranged on a fixing seat through each clamping claw, each clamping claw is arranged around a fixing tube, and a pushing member drives each clamping claw to synchronously approach the fixing tube, so that the bag is clamped under the cooperation of the clamping claw and the fixing tube; the bag clamping mechanism has a simple structure, is easy to process and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a bag clamping mechanism in the prior art;

[0020] Figure 2 This is a schematic diagram of the assembly structure of a bag clamping mechanism shown in an embodiment of the utility model;

[0021] Figure 3 for Figure 1 The schematic diagram of the structure of the bag clamping mechanism shown is in a released state;

[0022] Figure 4 for Figure 1 An exploded view of the bag clamping mechanism shown, wherein the elastic member is not shown;

[0023] Figure 5 for Figure 3 A cross-sectional view of the bag clamping mechanism shown in a released state;

[0024] Figure 6 for Figure 3 A cross-sectional view of the bag clamping mechanism shown in a clamped state.

[0025] The meanings of the numbers in the accompanying drawings are:

[0026] 100a, bag clamping mechanism;

[0027] 11a, clamping claw; 12a, cylinder; 13a, feeding port;

[0028] 100. Bag clamping mechanism;

[0029] 10. Fixed seat; 11. Enclosure portion; 12. Guide rail portion; 13. Baffle portion; 14. Positioning pin; 20. Clamping claw; 21. First connecting portion; 22. Second connecting portion; 23. Third connecting portion; 231. First inclined surface; 232. Groove; 30. Pushing member; 31. Support portion; 32. Boss portion; 321. Second inclined surface; 40. Elastic member; 50. Sealing member; 51. Mounting portion; 52. Elastic portion; 90. Fixed tube. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] Please refer to Figures 2 to 6, is a packaging device or unpacking device of an embodiment of the utility model, including a bag clamping mechanism 100. The bag clamping mechanism 100 includes a fixed seat 10, a clamping claw 20 and a pushing member 30. The fixed seat 10 is installed on the support mechanism, the fixed tube 90 passes through the center of the fixed seat 10, and the bag is sleeved on the fixed tube 90; there are multiple clamping claws 20, each clamping claw 20 is slidably mounted on the fixed seat 10, and each clamping claw 20 is arranged around the fixed tube 90; the pushing member 30 is used to drive each clamping claw 20 to synchronously approach or move away from the fixed tube 90 to clamp or release the bag. The bag clamping mechanism 100 is slidably mounted on the fixed seat 10 by each clamping claw 20, each clamping claw 20 is arranged around the fixed tube 90, and the pushing member 30 drives each clamping claw 20 to synchronously approach the fixed tube 90, and under the cooperation of the clamping claw 20 and the fixed tube 90, the bag is clamped; the bag clamping mechanism 100 has a simple structure and is easy to use.

[0037] like Figures 2 to 4 As shown, in this embodiment, the fixing seat 10 is installed on the supporting mechanism, the fixing tube 90 passes through the center of the fixing seat 10, and the bag is sleeved on the fixing tube 90; optionally, the fixing tube 90 is a hollow cylindrical tube; further, the fixing seat 10 includes a panel portion 11, a guide rail portion 12 and a baffle portion 13, the guide rail portion 12 is connected to the panel portion 11, and the clamping claw 20 is slidably arranged on the guide rail portion 12; the baffle portion 13 is connected to the panel portion 11; the guide rail portion 12 and the baffle portion 13 are both multiple, and correspond one to one, and each guide rail portion 12 is arranged along the circumference of the panel portion 11. In one embodiment, the panel portion 11 is annular, and there are four guide rail portions 12 and four baffle portions 13. The fixing seat 10 also includes a positioning pin 14, which is installed on the baffle portion 13; there are multiple positioning pins 14, and the positioning pins 14 correspond one to one with the baffle portion 13.

[0038] Please also read Figures 2 to 4 There are multiple clamping claws 20, each clamping claw 20 is slidably disposed on the fixing seat 10, and each clamping claw 20 is disposed around the fixing tube 90; in one embodiment, there are four clamping claws 20 to ensure that the bag is firmly fixed; optionally, the clamping claw 20 includes a first connecting portion 21, a second connecting portion 22 and a third connecting portion 23 connected in sequence, the first connecting portion 21 is used to abut against the fixing tube 90, the second connecting portion 22 is slidably disposed on the fixing seat 10, and the third connecting portion 23 is used to abut against the pushing member 30. Further, the first connecting portion 21 is in an arc shape corresponding to the fixing tube 90; the second connecting portion 22 is slidably disposed on the guide rail portion 12; one side surface of the third connecting portion 23 is a first inclined surface 231, and the other side surface is provided with a groove 232.

[0039] like Figure 2 and Figure 4As shown, the pusher 30 is used to drive each clamping claw 20 to synchronously approach or move away from the fixing tube 90 to clamp or release the bag; optionally, the pusher 30 includes a support portion 31 and a plurality of boss portions 32, and the boss portions 32 are used to abut against the third connecting portion 23; each boss portion 32 is arranged along the circumference of the support portion 31, and the boss portions 32 correspond to the third connecting portion 23 one by one. Further, the support portion 31 is annular; one side surface of the boss portion 32 is a second inclined surface 321 corresponding to the first inclined surface 231.

[0040] The bag clamping mechanism 100 further includes a power element (not shown), which is used to drive the pusher 30 to move up and down; optionally, the power element is a cylinder.

[0041] like Figure 2 As shown, the bag clamping mechanism 100 also includes a plurality of elastic members 40, one end of the elastic member 40 abuts against the third connecting portion 23, and the other end abuts against the fixing seat 10; optionally, one end of the elastic member 40 abuts against the baffle portion 13, and the other end is accommodated in the groove 232; further, one end of the elastic member 40 is sleeved on the positioning pin 14 to prevent the elastic member 40 from sliding.

[0042] like Figures 2 to 4 As shown, the bag clamping mechanism 100 further includes a sealing member 50, which is mounted on one end of the clamping claw 20 close to the fixed tube 90, and is used to abut against the bag; the clamping claw 20 and the sealing member 50 are both multiple, and correspond one to one. Optionally, the sealing member 50 includes a mounting portion 51 and an elastic portion 52 connected to the mounting portion 51, the mounting portion 51 is mounted on the clamping claw 20, and the elastic portion 52 is used to abut against the bag; further, the mounting portion 51 is mounted on the first connecting portion 21, and the mounting portion 51 is U-shaped; specifically, a barb structure is provided on the inner side of the mounting portion 51, so as to be firmly fixed to the first connecting portion 21; the elastic portion 52 is an O-shaped circular tube, which improves the elastic deformation degree, and when the bag is clamped, the O-shaped is deformed into a flat plate. Preferably, a seal 50 is installed at the top and bottom of the first connecting portion 21 to ensure that the bag is firmly fixed and has a good sealing effect to prevent dust from escaping; in one embodiment, the mounting portion 51 and the elastic portion 52 are integrally formed of rubber; preferably, the seal 50 is an EPDM foam sealing strip.

[0043] When using, Figure 6 As shown, the bag is sleeved on the fixed tube 90, and the power element drives the pusher 30 to descend; as the pusher 30 descends, the first inclined surface 231 of the boss portion 32 slides along the second inclined surface 321 of the third connecting portion 23, thereby forcing the sealing member 50 to move toward the fixed tube 90. At the same time, the third connecting portion 23 compresses the elastic member 40; as the sealing member 50 further moves toward the fixed tube 90, the elastic portion 52 abuts against the bag, and under the action of the fixed tube 90 and the sealing member 50, the elastic portion 52 is forced to deform, thereby firmly fixing the bag to the fixed tube 90 for loading or unloading. Figure 5 As shown, after loading or unloading is completed, the power element drives the pusher 30 to rise. At this time, under the action of the elastic member 40, the third connecting part 23 moves in the direction away from the fixed tube 90, thereby driving the elastic part 52 away from the fixed tube 90, and the bag is separated from the fixed tube 90. Since the first inclined surface 231 of the third connecting part 23 abuts against the second inclined surface 321 of the boss part 32, an inclined wedge structure is adopted, and the clamping claw 20 will not rebound after abutting against the fixed tube 90, and the sealing effect is good and the structure is stable. The sealing member 50 is installed on the top and bottom of the first connecting part 21, and the sealing effect is good to prevent dust from overflowing. By setting a plurality of arc-shaped clamping claws 20, the processing accuracy is reduced; the bag clamping mechanism 100 has a simple structure, is easy to process, and is convenient to use.

[0044] The bag clamping mechanism 100 of the utility model is slidably arranged on the fixing seat 10 through each clamping claw 20, and each clamping claw 20 is arranged around the fixing tube 90. The pushing member 30 drives each clamping claw 20 to synchronously approach the fixing tube 90. Under the cooperation of the clamping claw 20 and the fixing tube 90, the bag is clamped. The bag clamping mechanism 100 has a simple structure and is easy to use.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A bag clamping mechanism, characterized in that: It includes a fixed seat, a clamping claw and a pushing member, the fixed seat is installed on the supporting mechanism, a fixing tube passes through the center of the fixed seat, and the bag is sleeved on the fixing tube; there are multiple clamping claws, each of which is slidably arranged on the fixed seat, and each of which is arranged around the fixing tube; the pushing member is used to drive each of the clamping claws to synchronously approach or move away from the fixing tube to clamp or release the bag.

2. The bag clamping mechanism according to claim 1, characterized in that: The clamping claw includes a first connection portion, a second connection portion and a third connection portion which are connected in sequence, the first connection portion is used to abut against the fixing pipe, the second connection portion is slidably disposed on the fixing seat, and the third connection portion is used to abut against the pushing member.

3. The bag clamping mechanism according to claim 2, characterized in that: The pushing member includes a supporting portion and a plurality of boss portions, wherein the boss portions are used to abut against the third connecting portion; each of the boss portions is arranged along the circumference of the supporting portion, and the boss portions correspond to the third connecting portions one by one.

4. The bag clamping mechanism according to claim 3, characterized in that: One side surface of the third connection portion is a first inclined surface, and one side surface of the boss portion is a second inclined surface corresponding to the first inclined surface.

5. The bag clamping mechanism according to claim 3, characterized in that: It also includes a plurality of elastic members, one end of each of which abuts against the third connecting portion, and the other end of each of which abuts against the fixing seat.

6. The bag clamping mechanism according to claim 1, characterized in that: The fixed seat includes a surrounding plate portion, a guide rail portion and a baffle portion, the guide rail portion is connected to the surrounding plate portion, and the clamping claw is slidably arranged on the guide rail portion; the baffle portion is connected to the surrounding plate portion; the guide rail portion and the baffle portion are both multiple and correspond to each other one by one, and each guide rail portion is arranged along the circumference of the surrounding plate portion.

7. The bag clamping mechanism according to claim 1, characterized in that: It also includes a sealing member, which is installed at one end of the clamping claw close to the fixing tube, and is used to abut against the bag; the clamping claws and the sealing members are both multiple and correspond to each other one by one.

8. The bag clamping mechanism according to claim 7, characterized in that: The sealing member comprises a mounting portion and an elastic portion connected to the mounting portion, wherein the mounting portion is mounted on the clamping claw, and the elastic portion is used to abut against the bag.

9. A packaging device, characterized in that: The invention comprises the bag clamping mechanism according to any one of claims 1 to 8.

10. An unpacking device, characterized in that: The invention comprises the bag clamping mechanism according to any one of claims 1 to 8.

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