Packaging bag clamping device

Abstract

The utility model relates to the technical field of material packaging, and discloses a packaging bag clamping device which comprises clamps arranged oppositely and a support connected with the clamps, and each clamp comprises a shell, a fixed clamp petal fixedly connected to the shell and a movable clamp petal hinged to the fixed clamp petal. The fixed clamp clack and the movable clamp clack are connected through an L-shaped through hole and a pin which are formed in the fixed clamp clack and the movable clamp clack, one end of the L-shaped through hole extends in the axial direction of the clamp, and the other end of the L-shaped through hole extends in the radial direction of the clamp, so that the movable clamp clack can generate angular displacement and linear displacement relative to the fixed clamp clack; the clamping device further comprises a power output end, and the power output end is provided with a slope face used for corresponding to one end of the movable clamp petal. The packaging bag opening device has the function of assisting opening of packaging bags, the bag openings can be opened under twisting, and therefore an opening mechanism can conveniently stretch into the bag openings to conduct subsequent opening operation.

Description

Technical Field

[0001] The utility model relates to the technical field of material packaging, in particular to a clamping device for packaging bags. Background Art

[0002] The environmental protection calcium-zinc stabilizer is an additive used in plastic processing, mainly composed of calcium salts, zinc salts, auxiliary stabilizers, etc. The finished product is in powder form. The packaging process of the general calcium-zinc stabilizer is developing towards automation, and in particular, it is necessary to use a clamping device to replace manual labor to achieve automated packaging.

[0003] The existing clamping devices can basically achieve the clamping and transfer of packaging bags. However, after the packaging bag is transferred to the next station, it is necessary to open the mouth of the packaging bag to facilitate the loading of the environmental protection calcium-zinc stabilizer. The existing clamping devices do not have the function of assisting in opening the mouth. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a clamping device for packaging bags.

[0005] According to the clamping device for packaging bags provided by the utility model, it includes clamp jaws arranged oppositely and a bracket connecting the clamp jaws. Each clamp jaw includes a housing, a fixed stationary jaw flap connected to the housing, and a movable jaw flap hinged to the stationary jaw flap. The stationary jaw flap and the movable jaw flap are connected by an L-shaped through hole and a pin provided on the two of them. One end of the L-shaped through hole extends along the axial direction of the clamp jaw, and the other end extends along the radial direction of the clamp jaw, so that the movable jaw flap can have an angular displacement and a linear displacement relative to the stationary jaw flap; the clamping device further includes a power output end, and a slope corresponding to one end of the movable jaw flap is provided on the power output end. When the power output end undergoes a linear displacement under an external force, the slope can interfere with one end of the movable jaw flap to cause the movable jaw flap to generate an angular displacement. When the movable jaw flap and the stationary jaw flap are completely closed, the movable jaw flap continues to undergo a linear displacement along the axial direction of the clamp jaw under the interference of the power output end;

[0006] The advantages of such a setting are as follows: the oppositely arranged clamp jaws can respectively clamp both ends of the packaging bag. After stable clamping, the packaging bag can be transferred between stations. When a linear displacement can occur between the jaw flaps of the clamp jaw, it is equivalent to making a rubbing action on the bag mouth of the packaging bag. When both ends of the packaging bag are subjected to the rubbing operation, the bag mouth can be opened under the rubbing, so as to facilitate the subsequent opening operation of the opening mechanism to extend into the bag mouth.

[0007] In some examples of the utility model, an elastic member is connected between the movable jaw flap and the stationary jaw flap, so that when the movable jaw flap has a linear displacement relative to the stationary jaw flap, the elastic member undergoes elastic deformation;

[0008] The purpose of such a setting is that when the movable jaw flap undergoes a linear displacement and needs to return to its position to wait for the next clamping operation, there is no connection between the movable jaw flap and the power output end. The reset of the power output end cannot drive the reset of the movable jaw flap, while the restoring variable force of the elastic member can drive the reset of the movable jaw flap.

[0009] In some examples of the present utility model, the elastic member is a cylindrical spring, one end of which is connected to the movable jaw flap and the other end is connected to the fixed jaw flap.

[0010] In some examples of the present utility model, a groove for accommodating the cylindrical spring is formed on the fixed jaw flap. The groove extends along the axial direction of the fixed jaw flap, and the length of the groove is greater than the length of the cylindrical spring in its free state;

[0011] The purpose of such a setting is that when the fixed jaw flap and the movable jaw flap are closed, a groove for accommodating the cylindrical spring needs to be provided to prevent the cylindrical spring from being squeezed and deformed, and the groove needs to reserve a deformation space for the cylindrical spring.

[0012] In some examples of the present utility model, the clamp further includes a first cylinder, which is accommodated in the housing, and its output end is connected to the power output end; that is, the power of the power output end comes from the first cylinder.

[0013] In some examples of the present utility model, rubbers are provided on the opposite sides of the movable jaw flap and the fixed jaw flap. The rubbers are used to increase the friction between the fixed jaw flap and the movable jaw flap to ensure the rubbing effect on the bag mouth of the packaging bag.

[0014] In some examples of the present utility model, the rubber has anti-slip patterns, which are used to further increase the friction.

[0015] In some examples of the present utility model, a second cylinder is connected to each end of the clamp far from the jaw flap. The second cylinder is used to drive the distance between the opposite clamps to increase or decrease, so as to facilitate repeated operations.

[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1This is the front view of the packaging bag clamping device in the embodiment of the present utility model;

[0019] Figure 2 This is the front view of the clamp in the embodiment of the present utility model;

[0020] Figure 3 This is the top view of the clamp in the embodiment of the present utility model;

[0021] Figure 4 This is the cross-sectional view of the clamp at A-A in the embodiment of the present utility model;

[0022] Explanation of reference numerals:

[0023] Clamp 100, housing 110, fixed clamp lobe 120, L-shaped through hole 121, groove body 122, movable clamp lobe 130, pin 131, power output end 140, slope 141, groove 142, elastic member 150, first cylinder 160, rubber 170;

[0024] Bracket 200, rod member 210, cross beam 220, motor 230;

[0025] Second cylinder 300;

[0026] Cross frame 400. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0031] Next, refer to Figures 1-4 to describe the packaging bag clamping device according to the embodiments of the present utility model.

[0032] Specifically, please refer to the attached Figure 1 . The packaging bag clamping device includes clamping jaws 100 arranged oppositely and a bracket 200 connecting the clamping jaws 100. The bracket 200 includes two longitudinally extending rods 210 and a cross beam 220 connecting the ends of the two rods 210. The cross beam 220 is rotatably connected to a packaging device or other fixed structure, and a motor 230 is connected to the end of the cross beam 220. Thus, when the two clamping jaws 100 clamp the packaging bag, the cross beam 220 can be driven by the motor 230 to transfer the packaging bag to different workstations.

[0033] Please refer to the attached Figure 2 . Each clamping jaw 100 includes a housing 110, a fixed clamping jaw 120 connected to the housing 110, and a movable clamping jaw 130 connected to the fixed clamping jaw 120. Among them, the fixed clamping jaw 120 is fixed to the housing 110 through a stud 131, and its extending direction is parallel to the axial direction L of the clamping jaw 100. The movable clamping jaw 130 is connected to the fixed clamping jaw 120, and one end of it extends into the housing 110.

[0034] Please refer to the attached Figure 3 to Figure 4 . The fixed clamping jaw 120 and the movable clamping jaw 130 are connected through L-shaped through holes 121 and studs 131 provided on both of them. Specifically, in this embodiment, the L-shaped through holes 121 are opened on the fixed clamping jaw 120, as shown by the dashed line in Figure 4 . The stud 131 passes through the L-shaped through hole 121 and is fixedly connected to the fixed clamping jaw 120.

[0035] Please continue to refer to the attachedFigure 4 , one end of the L-shaped through hole 121 extends along the axial direction L of the clamp 100, and the other end extends along the radial direction F of the clamp 100, where the radial direction F refers to the direction perpendicular to the axial direction L; thus, the movable jaw 130 can have an angular displacement and a linear displacement relative to the fixed jaw 120.

[0036] Please continue to refer to the appendix Figure 4 , the clamping device further includes a power output end 140, and a slope 141 corresponding to one end of the movable jaw 130 is provided on the power output end 140. When the power output end 140 undergoes a linear displacement under an external force, the slope 141 can interfere with one end of the movable jaw 130 to cause an angular displacement of the movable jaw 130. When the movable jaw 130 is completely closed with the fixed jaw 120, the movable jaw 130 continues to undergo a linear displacement along the axial direction L of the clamp 100 under the interference of the power output end 140;

[0037] That is, when one end of the movable jaw 130 is displaced relative to the slope 141, the pin 131 only rotates in the L-shaped through hole 121. When the movable jaw 130 is completely closed with the fixed jaw 120, there is no more space for the clamping end of the movable jaw 130 to rotate, and its middle part can still continue to have an angular displacement. That is, at this time, the pin 131 undergoes a displacement in the radial direction F in the L-shaped through hole 121. At the same time, one end of the movable jaw 130 corresponds to the groove 142 on the slope 141. At this time, with the linear displacement of the power output end 140, the movable jaw 130 can no longer have an angular displacement, but has a linear displacement, generating a rubbing action with the fixed jaw 120.

[0038] Please continue to refer to the appendix Figure 4 , an elastic member 150 is connected between the movable jaw 130 and the fixed jaw 120, so that when the movable jaw 130 undergoes a linear displacement relative to the fixed jaw 120, the elastic member 150 undergoes elastic deformation; specifically, both ends of the elastic member 150 are respectively hung on the movable jaw 130 and the fixed jaw 120.

[0039] Please continue to refer to the appendix Figure 4 , the elastic member 150 is a cylindrical spring, one end of which is connected to the movable jaw 130 and the other end is connected to the fixed jaw 120.

[0040] Please continue to refer to the appendix Figure 4 , a groove 122 for accommodating the cylindrical spring is provided on the fixed jaw 120, the groove 122 extends along the axial direction L of the fixed jaw 120, and the length of the groove 122 is greater than the length of the cylindrical spring in the free state.

[0041] Please continue to refer to the appendix Figure 4 , the clamp 100 further includes a first cylinder 160, the first cylinder 160 is accommodated in the housing 110, and its output end is connected to the power output end 140.

[0042] Please continue to refer to the appendix Figure 4 , on the side of the movable clamping flap 130 facing the fixed clamping flap 120, rubber 170 is provided, and the rubber 170 is fixed to the movable clamping flap 130 or the fixed clamping flap 120 by screws.

[0043] Please continue to refer to the appendix Figure 4 , the rubber 170 has anti-slip lines.

[0044] Please continue to refer to the appendix Figure 1 , at one end of each clamp 100 away from the clamping flap, a second cylinder 300 is connected. Specifically, the clamp 100 is slidably arranged on the cross frame 400, and the second cylinder 300 is supported on the cross frame 400, and its output end is connected to the clamp 100.

[0045] Other components of the packaging bag clamping device according to the embodiments of the present invention, such as motors, cylinders, etc., and operations are known to those of ordinary skill in the art and will not be described in detail here.

[0046] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A packaging bag clamping device, characterized in that: The invention comprises clamps arranged opposite to each other and a bracket connecting the clamps, each of the clamps comprises a shell, a fixed jaw flap fixedly connected to the shell and a movable jaw flap connected to the fixed jaw flap, the fixed jaw flap and the movable jaw flap are connected by an L-shaped through hole and a pin arranged on both of them, one end of the L-shaped through hole extends along the axial direction of the clamp, and the other end extends along the radial direction of the clamp, so that the movable jaw flap can undergo angular displacement and linear displacement relative to the fixed jaw flap; the clamping device also comprises a power output end, on which a slope surface corresponding to one end of the movable jaw flap is provided, so that when the power output end undergoes linear displacement due to an external force, the slope surface can interfere with one end of the movable jaw flap to cause an angular displacement of the movable jaw flap, and when the movable jaw flap and the fixed jaw flap are completely closed, the movable jaw flap continues to undergo linear displacement along the axial direction of the clamp under the interference of the power output end.

2. The packaging bag clamping device according to claim 1, characterized in that: An elastic member is connected between the movable jaw flap and the fixed jaw flap, so that when the movable jaw flap undergoes linear displacement relative to the fixed jaw flap, the elastic member undergoes elastic deformation.

3. The packaging bag clamping device according to claim 2, characterized in that: The elastic member is a columnar spring, one end of which is connected to the movable jaw petal, and the other end of which is connected to the fixed jaw petal.

4. The packaging bag clamping device according to claim 3, characterized in that: The fixed jaw is provided with a slot for accommodating a cylindrical spring. The slot extends along the axial direction of the fixed jaw, and the length of the slot is greater than the length of the cylindrical spring in a free state.

5. The packaging bag clamping device according to any one of claims 1 to 4, characterized in that: The clamp further comprises a first cylinder, which is accommodated in the housing and has an output end connected to the power output end.

6. The packaging bag clamping device according to any one of claims 1 to 4, characterized in that: The sides of the movable jaw flap and the fixed jaw flap facing each other are both provided with rubber.

7. The packaging bag clamping device according to claim 6, characterized in that: The rubber is provided with anti-skid patterns.

8. The packaging bag clamping device according to any one of claims 1 to 4, characterized in that: One end of each clamp away from the clamp petal is connected to a second cylinder.

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