A clamping claw structure, a clamp and equipment for automatically putting on a plastic bag

Abstract

A clamping jaw structure, a clamp and equipment for automatically putting on a packaging plastic bag, comprising a main frame and a clamping jaw structure, a suction structure, a slider structure and a power structure arranged on the main frame; the main frame has a fixed part arranged at one end and a movable part arranged at the other end, the first claw group and the second claw group of the clamping jaw structure are correspondingly assembled at the lower ends of the fixed part and the movable part, the first claw group and the second claw group are not on the same horizontal plane, and the upper and lower clamping jaws of the first claw group and the second claw group in the open state are staggered. The present invention adopts a clamping jaw structure to enable the clamp to automatically open the plastic bag and automatically put it on the air-conditioning product when clamping the packaging plastic bag, which effectively replaces manual operation, effectively avoids the problem of frequent turning when manually putting on the bag, reduces the labor intensity of employees, and accurately locates the realization of the actions of grabbing, opening, and putting on the plastic bag, which can effectively solve the problem of manual putting on the bag in place.

Description

Technical Field

[0001] The invention relates to the technical field of air-conditioning packaging in the air-conditioning industry, in particular to a clamping claw structure, a clamp and equipment for automatically covering and packaging a plastic bag. Background Art

[0002] In the air-conditioning industry, the outermost plastic packaging bag of the air-conditioning outdoor unit is manually carried to the bagging station, and then manually opened by employees and placed on the air-conditioning outdoor unit.

[0003] This method has the following disadvantages:

[0004] 1) This operation mode is highly dependent on personnel, requires large manpower input, and has high labor intensity.

[0005] 2) Employees turn around too frequently, resulting in wasted motion.

[0006] 3) Manual bagging is inefficient and the packaging quality is difficult to guarantee. Summary of the invention

[0007] In view of the problems that the above-mentioned operation mode of putting on packaging bags has high dependence on personnel and high labor intensity, the present invention provides a clamping claw structure, a clamp and equipment for automatically putting on packaging plastic bags, which effectively replaces manual operation and reduces the labor intensity of employees.

[0008] To achieve the above-mentioned object, the present invention adopts the following technical solution: a clamping jaw structure, comprising at least one fixed first jaw group and at least one second jaw group sliding toward the first jaw group and with the jaws staggered;

[0009] The first jaw group and the second jaw group respectively have a first upper jaw and a first lower jaw, a second upper jaw and a second lower jaw that are movably assembled to open or close the jaws of the jaw group. The first upper and lower jaws and the second upper and lower jaws are staggered in the open state so that the first upper jaw or the first lower jaw is between the second upper jaw or the second lower jaw.

[0010] Preferably, the claw group has a claw cylinder and a guide plate arranged at the output end of the claw cylinder, and two cylinder claws arranged on the guide plate and sliding along the guide rail on the guide plate under the action of the claw cylinder, and the upper and lower claws of the claw group are assembled on the cylinder claws.

[0011] Preferably, the ends of the upper and lower jaws abut against each other when the jaw group is in a closed state, and gaskets are arranged on the abutting sides of the ends of the upper and lower jaws.

[0012] On the other hand, the present invention adopts the following technical solution: a clamp for automatically covering a plastic bag, comprising a main frame and a clamping claw structure, a suction structure, a slider structure and a power structure arranged on the main frame;

[0013] The main frame has a fixed part arranged at one end and a movable part arranged at the other end, and the first claw group and the second claw group of the clamping structure are correspondingly assembled at the lower ends of the fixed part and the movable part, and the first claw group and the second claw group are not in the same horizontal plane and the upper and lower claws of the first claw group and the second claw group in the open state are staggered.

[0014] Preferably, a travel track is provided between the moving part and the fixed part, the slider structure is mounted on the travel track and is transmission-connected to the power structure so that the slider structure and the moving part mounted on the slider structure slide on the travel track.

[0015] Preferably, the power structure comprises an electric cylinder assembly, and the slider structure is transmission-connected to an output end of the electric cylinder assembly so that the slider structure drives the moving part to move toward or away from the fixed part along a travel track.

[0016] Preferably, the suction structure includes a cylinder connecting plate, a telescopic cylinder, a suction cup connecting plate, and a suction cup member, the suction cup member is assembled on the suction cup connecting plate, the suction cup connecting plate is assembled on the output end of the telescopic cylinder, and the telescopic cylinder is fixed to the fixed part via the cylinder connecting plate.

[0017] Preferably, the clamping structure includes at least one group of a first clamping group and a second clamping group, an assembly frame, a guide shaft kit, and a cylinder connecting frame. The clamping cylinder of the clamping group is fixed by the cylinder connecting frame, and the cylinder connecting frame is suspended on the assembly frame through the guide shaft kit. The assembly frame is fixed to the lower end of the movable part and / or the fixed part.

[0018] Preferably, the first claw group is fixed to the lower end of the fixed part, and the second claw group is fixed to the lower end of the movable part corresponding to the first claw group, and the upper and lower jaws of the first claw group and the second claw group are not in the same horizontal plane when they are in the open state.

[0019] On the other hand, the present invention selects the following technical solution: an automatic packaging plastic bag putting device, including an automatic packaging plastic bag putting clamp as described above, the main frame of the clamp is provided with a flange connecting plate and a flange arranged on the flange connecting plate for connecting the power output component of the device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention adopts a clamping claw structure to enable the clamp to automatically open the plastic bag and automatically put it on the air-conditioning product when clamping the packaging plastic bag, effectively replacing manual operation, effectively avoiding the problem of frequent turning when manually putting on the bag, and reducing the labor intensity of employees. The ABB robot is used in conjunction with the clamp of the present invention to accurately position the actions of grabbing, opening, and putting on the plastic bag, which can effectively solve the problem of people putting on the packaging bag for a long time and causing it to not be put in place.

[0022] The present invention can stably and reliably realize the actions of grabbing, opening and putting on plastic bags by adopting a clamp, which can replace manual bagging, save one manual bagging worker, and avoid low efficiency of manual operation, thereby effectively improving the overall efficiency and packaging quality of air conditioner production.

[0023] The present invention adopts the spreading and clamping mode of the offset clamping jaws, which reduces the volume of the clamp, is not prone to action interference and collision, and the clamp is flexible and compact, the required working space is reduced, the robot does not need to perform more posture adjustment steps, and the transfer efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution, the drawings required for use in the implementation will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a schematic diagram of the clamping jaw structure of the present invention.

[0026] Figure 2 It is a schematic diagram of a certain state of the upper and lower clamping jaws of the present invention.

[0027] Figure 3 It is a schematic diagram of the clamping jaw structure of the present invention.

[0028] Figure 4 It is a schematic diagram of the clamp structure of the present invention.

[0029] Figure 5 It is a schematic diagram of the suction structure of the present invention.

[0030] Figure 6 This is a schematic diagram of a certain state of the implementation of the preferred solution of Case 2.

[0031] The marks in the figure indicate:

[0032] 100: first jaw group, 200: second jaw group, 101: first upper jaw, 102: first lower jaw, 201: second upper jaw, 202: second lower jaw;

[0033] 10: main frame, 11: fixed part, 12: moving part;

[0034] 20: clamping claw structure, 21: clamping claw cylinder, 22: guide rail plate, 23: cylinder clamping claw, 24: assembly frame, 25: guide shaft kit, 26: cylinder connecting frame;

[0035] 30: suction structure, 31: cylinder connecting plate, 32: telescopic cylinder, 33: suction cup connecting plate, 34: suction cup member;

[0036] 40: slider structure, 50: power structure, 60: flange connecting plate, 70: flange. DETAILED DESCRIPTION

[0037] In order to enable a clear and complete understanding of the technical solution, the present invention is further described in conjunction with the embodiments and drawings. Obviously, the described embodiments are only some embodiments of the present invention, and all other embodiments obtained by technicians in the relevant field without making creative work are within the scope of protection of the present invention.

[0038] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0039] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0040] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0041] Implementation case 1:

[0042] like Figure 1 As shown, a clamping jaw structure comprises at least one fixed first jaw group 100 and at least one second jaw group 200 which slides toward the first jaw group 100 and the jaws are staggeredly assembled;

[0043] The first jaw group 100 and the second jaw group 200 respectively have a first upper jaw 101 and a first lower jaw 102, a second upper jaw 201 and a second lower jaw 202 that are movably assembled to open or close the jaws of the jaw group. The first upper and lower jaws and the second upper and lower jaws are staggered in the open state so that the first upper jaw 101 or the first lower jaw 102 is located between the second upper jaw 201 or the second lower jaw 202. When the second jaw group slides toward the first jaw group, it is driven by the jaw cylinder so that the two jaw groups are in the open state, such as Figure 2 As shown, the first upper jaw 101, the first lower jaw 102 and the second upper jaw 201, the second lower jaw 202 are configured to be staggered and engaged with each other, and the packaging bag to be torn is located between the two jaw groups. The upper and lower jaws can be closed to fit and clamp the surface of the packaging bag, and then the second jaw group is moved away from the first jaw group so that the films on both sides of the packaging bag are clamped and the packaging bag is torn to open the packaging bag.

[0044] like Figure 3 As shown, the claw group has a claw cylinder 21 and a guide plate 22 arranged at the output end of the claw cylinder 21, and two cylinder claws 23 arranged on the guide plate 22 and sliding along the guide rail on the guide plate 22 under the action of the claw cylinder 21. The upper and lower claws of the claw group are assembled on the cylinder claws. The upper and lower claws are designed to extend at the end according to the length of the packaging bag to be torn open. The upper and lower claws are locked on the cylinder claw 23 through a bolt structure. The cylinder claw 23 is driven by the claw cylinder 21 to slide the upper and lower claws away from or towards each other on the guide plate 22. When the upper and lower claws are close to each other so that the ends are abutted, it is a closed state, and when the upper and lower claws are away from each other so that the ends are separated, it is an open state.

[0045] As a preferred solution of this embodiment, in order to increase the friction between the upper and lower jaws and the surface film of the packaging bag to be torn open, the ends of the upper and lower jaws abut against each other when the jaw group is in a closed state, and the ends of the upper and lower jaws are provided with gaskets on the abutting side. The gaskets can be film, which can enhance the friction with the film and enable the two closed jaws to act as a buffer.

[0046] This implementation case uses a clamp structure to address the problem of high labor intensity for employees during manual bagging. The staggered clamps are opened / closed and moved to peel off and tear the two films of the packaging bag, and then the packaging bag is opened for automatic bagging of the products to be packaged, which effectively replaces manual operations and reduces the labor intensity of employees.

[0047] Implementation case 2:

[0048] like Figure 4As shown, a clamp for automatically putting on a plastic bag comprises a main frame 10 and a clamping claw structure 20, a suction structure 30, a slider structure 40 and a power structure 50 arranged on the main frame 10;

[0049] The main frame 10 has a fixed part 11 arranged at one end and a movable part 12 arranged at the other end. The first claw group 100 and the second claw group 200 of the clamping structure 10 are correspondingly assembled at the lower ends of the fixed part 11 and the movable part 12. The first claw group 100 and the second claw group 200 are not in the same horizontal plane and the upper and lower claws of the first claw group and the second claw group in the open state are staggered.

[0050] A travel track (not shown in the figure) is arranged between the moving part 12 and the fixed part 11, and the slider structure 40 is mounted on the travel track and is transmission-connected to the power structure 50 so that the slider structure 40 and the moving part 12 mounted on the slider structure 40 slide on the travel track. The power structure 50 includes an electric cylinder assembly, and the slider structure 40 is transmission-connected to the output end of the electric cylinder assembly 50 so that the slider structure 40 drives the moving part 12 to move toward or away from the fixed part 11 along the travel track. The electric cylinder assembly and the sliding structure of the power structure realize sliding on the set travel track, which is a conventional technical solution and will not be repeated. This implementation case also provides another preferred solution, in which the power structure includes a servo motor and a lead screw structure, and the slider structure is mounted on the lead screw and driven by the servo motor to rotate and move the lead screw, or is transmission-connected to the servo motor active on the lead screw. This solution can also realize that the slider structure drives the moving part to move toward or away from the fixed part, but increases the weight of the clamp, and there is a problem that the lubricating oil stain of the lead screw may fall on the plastic bag, causing unnecessary quality risks.

[0051] like Figure 5 As shown, the suction structure 30 includes a cylinder connecting plate 31, a telescopic cylinder 32, a suction cup connecting plate 33, and a suction cup member 34. The suction cup member 34 is mounted on the suction cup connecting plate 33. The suction cup connecting plate 33 is mounted on the output end of the telescopic cylinder 32. The telescopic cylinder 32 is fixed to the fixed portion through the cylinder connecting plate 31. The suction cup member is used to absorb the uppermost end of the packaging plastic bag when the clamp is moved to the packaging plastic bag supply position. When the clamp is raised, the bag mouth of the packaging plastic bag is close to the clamping claw structure due to the action of gravity.

[0052] The clamping structure 20 includes at least one first clamping group 100 and a second clamping group 200, an assembly frame 24, a guide shaft set 25, and a cylinder connecting frame 26. The clamping cylinder 21 of the clamping group is fixed by the cylinder connecting frame 26. The cylinder connecting frame 26 is suspended on the assembly frame 24 through the guide shaft set 25. The assembly frame 24 is fixed to the lower end of the moving part 12 and / or the fixed part 11. The first clamping group 100 is fixed to the lower end of the fixed part, and the second clamping group 200 is fixed to the lower end of the moving part corresponding to the first clamping group 100. When the first clamping group and the second clamping group are in the open state, the upper and lower clamping jaws of each of them are not in the same horizontal plane. Specifically, as Figure 2 As shown, the first upper clamping jaw 101, the first lower clamping jaw 102 and the second upper clamping jaw 201, the second lower clamping jaw 202 are configured to be staggered and engaged with each other.

[0053] In this implementation case, the packaging plastic bag made of film material is spread flat on the packaging plastic bag supply station or fixed tooling. The moving part in the main frame is first moved to the end away from the fixed part under the drive of the electric cylinder assembly (700 stroke) and the slider structure, and then the robot controls the fixture to move to the tooling of the packaging plastic bag, and the photoelectric sensor outputs a film in place signal to the robot. The telescopic cylinder of the suction structure extends to drive the suction cup part, and the suction cup part performs the suction action to suck the upper end of the packaging plastic bag, and then the entire fixture is raised and moved above the air conditioner of the assembly line. At this time, the moving part 12 moves toward the fixed part 11 under the action of the electric cylinder assembly, the sliding structure and the stroke track, and it makes the first claw group and the second claw group open through the clamping claw cylinder. After the moving part drives the first upper and lower jaws of the first claw group to bite with the second upper and lower jaws of the second claw group, the packaging plastic bag is placed between the two claw groups in a multi-bend manner. During the biting process, the upper jaw and the other lower jaw located in the middle can peel off the film adhesion on both sides of the packaging plastic bag, so that the packaging plastic bag is stretched out, which is more conducive to being clamped by the claw group.

[0054] As a further preferred solution of this embodiment, an elastic member and a small-angle change-of-direction bearing can be added to the guide shaft kit to achieve a certain small-angle tilt elastic space for the first claw group and the second claw group when they are engaged with each other, such as Figure 6 As described, a clamping jaw of the first claw group and a clamping jaw of the second claw group in the middle are interference fit in the vertical direction. When they are close to each other in the horizontal direction, the elastic space in the guide shaft kit can avoid hard collision of the two claw groups. At this time, the films on both sides of the packaging plastic bag in the middle can be better peeled off during the mutual biting process.

[0055] When the packaging plastic bag is opened, the two claws of the two claw groups are closed by the claw cylinder to clamp the two side films of the packaging plastic bag, and then the moving part drives the second claw group to move away from the first claw group so that the film on one side of the packaging plastic bag clamped by the first claw group is separated from the film on the other side of the packaging plastic bag clamped by the second claw group, and the packaging plastic bag is opened. Then the entire clamp moves downward under the corresponding product to be packaged to put on the packaging plastic bag. After completion, the upper and lower claws are released by the claw cylinder and reset to complete the automatic putting on of the packaging plastic bag.

[0056] This implementation case can meet the needs of outdoor units of all window air conditioners and has wide versatility. It can ensure that the position of the bag on the air conditioner is the same each time, and there will be no large errors, thus ensuring the consistency of the product. The structure and movement are simple, and the efficiency is higher than manual operation.

[0057] On the other hand, the present invention also provides another implementation example: an automatic plastic bagging device, comprising a clamp for automatic plastic bagging as described above, wherein the main frame of the clamp is provided with a flange connecting plate 60 and a flange 70 for connecting the power output component of the device disposed on the flange connecting plate 60. The clamp is controlled by the power output component to move on the plastic bagging tooling and the air-conditioning packaging assembly line and to perform the automatic plastic bagging action.

[0058] The above disclosure is only one or more preferred embodiments of the present invention, which are used to help understand the inventive concept of the technical solution, and is not intended to limit the present invention in other forms. Technical personnel in the relevant field may make other equivalent or customary replacement schemes based on the features defined by the present invention, which still fall within the scope of the present invention.

Claims

1. A clamp for automatically putting on a plastic bag, characterized by: It includes a main frame and a clamping claw structure, a suction structure, a slider structure and a power structure arranged on the main frame; The clamping jaw structure comprises a jaw group having an upper jaw and a lower jaw, wherein the jaw group comprises at least one fixed first jaw group and at least one second jaw group sliding toward the first jaw group and with jaws staggered; The main frame has a fixed portion arranged at one end and a movable portion arranged at the other end, the first claw group and the second claw group of the clamping claw structure are correspondingly assembled at the lower ends of the fixed portion and the movable portion, the first claw group and the second claw group are not on the same horizontal plane, and the upper and lower claws of the first and second claw groups in the opened state are staggered; The first jaw group and the second jaw group respectively have a first upper jaw and a first lower jaw, a second upper jaw and a second lower jaw that are movably assembled so that the jaws of the jaw group can be opened or closed, and the first upper jaw and the first lower jaw, the second upper jaw and the second lower jaw are staggered in an opened state so that the first upper jaw or the first lower jaw is located between the second upper jaw and the second lower jaw; By adding elastic parts and small-angle change-of-direction bearings to the guide shaft kit, the first claw group and the second claw group can have an elastic space with a small angle when they are engaged with each other. A clamping jaw of the first claw group and a clamping jaw of the second claw group in the middle are interference fit in the vertical direction. When they are close to each other in the horizontal direction, the elastic space in the guide shaft kit avoids hard collision of the two claw groups. At this time, the films on both sides of the packaging plastic bag in the middle are peeled off during the mutual engagement process.

2. The automatic plastic bagging clamp according to claim 1, characterized in that: The jaw group comprises a jaw cylinder and a guide rail plate arranged at the output end of the jaw cylinder, and two cylinder jaws arranged on the guide rail plate and sliding along the guide rail on the guide rail plate under the action of the jaw cylinder. The upper jaw and the lower jaw of the jaw group are assembled on the cylinder jaw.

3. The automatic plastic bagging clamp according to claim 2, characterized in that: The ends of the upper clamping jaw and the lower clamping jaw abut against each other when the clamping jaw group is in a closed state, and gaskets are arranged on the abutting sides of the ends of the upper clamping jaw and the lower clamping jaw.

4. The automatic plastic bagging clamp according to claim 1, characterized in that: A travel track is arranged between the moving part and the fixed part, and the slider structure is assembled on the travel track and is transmission-connected to the power structure so that the slider structure and the moving part assembled on the slider structure slide on the travel track.

5. The automatic plastic bagging clamp according to claim 4, characterized in that: The power structure comprises an electric cylinder assembly, and the slider structure is transmission-connected to the output end of the electric cylinder assembly so that the slider structure drives the moving part to move toward or away from the fixed part along the travel track.

6. The automatic plastic bagging clamp according to claim 1, characterized in that: The suction structure includes a cylinder connecting plate, a telescopic cylinder, a suction cup connecting plate, and a suction cup member. The suction cup member is assembled on the suction cup connecting plate. The suction cup connecting plate is assembled on the output end of the telescopic cylinder. The telescopic cylinder is fixed to the fixed part through the cylinder connecting plate.

7. The automatic plastic bagging clamp according to claim 2, characterized in that: The clamping jaw structure includes an assembly frame, a guide shaft kit, and a cylinder connecting frame. The clamping jaw cylinder of the clamping jaw group is fixed by the cylinder connecting frame. The cylinder connecting frame is suspended on the assembly frame through the guide shaft kit. The assembly frame is fixed to the lower end of the movable part and / or the fixed part.

8. The automatic plastic bagging clamp according to claim 7, characterized in that: The first claw group is fixed to the lower end of the fixed portion, and the second claw group is fixed to the lower end of the movable portion corresponding to the first claw group.

9. An automatic plastic bagging device, characterized in that: It comprises a clamp for automatically putting on a plastic bag as described in any one of claims 1 to 8, wherein a flange connecting plate and a flange arranged on the flange connecting plate for connecting a power output component of the device are provided on the main frame of the clamp.

Images