Empty bag detection device of packaging machine and packaging machine

Abstract

The utility model belongs to the technical field of packaging equipment, particularly relates to an empty bag detection device of a packaging machine and the packaging machine, solves the technical problem that an existing packaging machine does not have an empty bag recognition function, and provides the empty bag detection device of the packaging machine. Comprising a first driving part and a positioning part which are arranged on the rack, and the positioning part is driven by the first driving part to move in the transition groove, so that the positioning part can position the packaging bag sliding to the positioning part from the transition groove or release the packaging bag to further slide from the transition groove; and the detection assembly comprises a second driving part, a detection sensor and a first pressing plate, the detection sensor is connected with the first pressing plate, and the second driving part drives the first pressing plate to abut against the positioned packaging bag so that the detection sensor can detect the thickness of the packaging bag. The empty bag detection device of the packaging machine and the packaging machine have the advantages of having an empty bag recognition function and being capable of improving production efficiency and production quality.

Description

Technical Field

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

[0002] At present, in many fields, most of the products on the market need to be packaged by a packaging machine. For example, in the food production field, such as sheet foods like dried meat slices, they need to be put into packaging bags and then the packaging bags are sealed to obtain finished products; in the facial mask production field, the facial mask cloth is folded and put into a facial mask packaging bag, and then essence is filled and sealed on the facial mask packaging machine to produce finished products. There may be an adverse situation of empty bags caused by the failure to put sheet foods or facial mask cloth into the packaging bags during the packaging process. Taking the production of facial masks with empty bags as an example, when some packaging bags do not contain folded facial mask cloth, these empty bags will be filled and sealed by the facial mask packaging machine as usual, and the facial mask packaging machine cannot identify them. When the products produced from these empty bags flow into the market, it will damage the interests of consumers. Currently, domestic and foreign manufacturers have thousands of such facial mask packaging machines that cannot identify empty bags. If these existing large numbers of facial mask packaging machines are scrapped, it will definitely cause huge losses to the manufacturers. Therefore, on the one hand, if it is possible to add an empty bag detection function conveniently with as little change as possible to the original structure on the existing facial mask packaging machines, or on the other hand, configure an empty bag detection function on newly launched facial mask packaging machines, it is possible to identify empty bags during the production process of facial masks, thus solving the problem for manufacturers that empty bags and packaging bags containing items such as facial mask cloth and dried meat slices are mixed and shipped out at the same time, and achieving huge economic benefits. Summary of the Utility Model

[0003] Aiming at the above-mentioned deficiencies of the prior art, to achieve an object of the present utility model, the present utility model provides an empty bag detection device of a packaging machine. The packaging machine includes a frame, at least one set of bag storage grooves provided on the frame for storing packaging bags, and a transition groove connected to the bag outlet of the bag storage groove. An empty bag detection device is provided at the bag outlet of the bag storage groove. The empty bag detection device includes: a positioning component, which includes a first driving member and a positioning member. The first driving member is provided on the frame, and the positioning member moves in the transition groove under the drive of the first driving member, so that the positioning member can position the packaging bag sliding down from the transition groove onto it or release the packaging bag to further slide down from the transition groove; a detection component, which includes a second driving member, a detection sensor, and a first pressing plate. The second driving member and the detection sensor are both provided on the frame. The detection sensor is connected to the first pressing plate. The second driving member drives the first pressing plate to press against the packaging bag positioned by the positioning member so that the detection sensor can detect the thickness of the packaging bag.

[0004] Further, the packaging machine further includes a bag-taking component for taking out the packaging bags in the bag storage tank and putting them into the corresponding transition tank. The machine frame includes a frame platform which is horizontally arranged and located below the bag-taking component. The positioning component and the detection component are respectively located below and above the frame platform.

[0005] Further, the packaging machine further includes a second pressing plate fixed below the bag outlet of the bag storage tank. The first pressing plate and the second pressing plate are arranged oppositely, and the second driving member drives the first pressing plate to move relative to the second pressing plate in a relatively approaching or relatively separating manner.

[0006] Further, the detection component further includes a support block fixed to the machine frame. The detection sensor is fixed to the support block and connected to the first pressing plate. The support block is provided with a communicating opening and a hollow part. The first pressing plate is arranged on the side of the support block facing away from the hollow part and facing the transition tank. The second driving member is arranged in the hollow part and is connected to the first pressing plate through the opening to drive the first pressing plate to move.

[0007] Further, the support block is provided with a first connection hole, and the machine frame is provided with a first fixing hole corresponding to the first connection hole. The corresponding first connection hole and the first fixing hole are connected through a connecting member. At least a pair of limiting blocks are fixed on the support block. The limiting blocks are provided with second connection holes, and the support block is provided with second fixing holes corresponding to the second connection holes. The corresponding second connection holes and the second fixing holes are connected through a connecting member, and each pair of limiting blocks clamps the detection sensor.

[0008] Further, the positioning member is set as a positioning block extending in a direction perpendicular to the extending direction of the transition tank, and a pair of parallel and juxtaposed protrusions are provided at its free end. The positioning member moves under the drive of the first driving member to adjust the relative distance between its free end and the transition tank. After the detection component completes the thickness detection of the packaging bag, for the packaging bag with normal detection, the relative distance is adjusted to increase to release the packaging bag to further slide down from the transition tank. For the packaging bag with abnormal detection, the relative distance is maintained at the relative distance corresponding to positioning the packaging bag sliding down onto it from the transition tank.

[0009] Further, the positioning component further includes a bracket, a movable plate fixedly connected to the machine frame, and a guiding component for guiding the movement of the movable plate. The positioning member is fixed to the movable plate. The first driving member is supported by the bracket and is drivingly connected to the movable plate. The guiding component includes a guide sleeve arranged on the bracket and a guide rod passing through the guide sleeve and slidingly matched with it. The guide rod is connected to the movable plate.

[0010] Further, both the first driving member and the second driving member are cylinders having telescopic cylinder rods. The cylinder rod of the first driving member is fixedly connected to the positioning member, and the cylinder rod of the second driving member is fixedly connected to the first pressing plate. The detection sensor is a thickness sensor. The bag storage grooves and their corresponding transition grooves are provided in multiple groups, and the empty bag detection device is provided with more than two. Each empty bag detection device includes a plurality of positioning components and a plurality of detection components that are arranged in one-to-one correspondence with the transition grooves.

[0011] As an object of the present invention, a packaging machine is provided, including the empty bag detection device of any one of the above packaging machines.

[0012] Further, the packaging bag is used for packaging facial mask cloth.

[0013] The beneficial effects of the empty bag detection device of the packaging machine provided by the present invention and the packaging machine are as follows:

[0014] By adopting the empty bag detection device, the packaging machine can identify empty bags during the production process. Moreover, the empty bag detection device has the advantages of simple operation, time-saving and labor-saving for empty bag detection, and improving production efficiency. In addition, the empty bag detection device can be conveniently added to the existing packaging machine, so that the existing packaging machine can conveniently add the empty bag detection function with minimal change to the original structure. Moreover, the newly launched packaging machine is configured with the empty bag detection device initially, thereby correspondingly obtaining the empty bag detection function and enhancing the market competitiveness, and all can achieve huge economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly introduced below. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts, and all of these are within the protection scope of the present invention.

[0016] Figure 1 It is a schematic diagram of the overall structure of the packaging machine with an empty bag detection device provided by the present invention;

[0017] Figure 2 Corresponding to Figure 1 And it is a schematic diagram of the overall structure showing the second pressing plate;

[0018] Figure 3 It is a schematic diagram of the structure of the empty bag detection device of the packaging machine provided by the present invention;

[0019] Figure 4 For Figure 3 The partial enlarged schematic diagram at A in

[0020] Description of the reference numerals:

[0021] 1 - Frame; 11 - Frame platform; 2 - Bag storage groove; 3 - Transition groove; 4 - Positioning component; 41 - First driving member; 42 - Positioning member; 421 - Projection; 43 - Bracket; 44 - Movable plate; 45 - Guide sleeve; 46 - Guide rod; 5 - Detection component; 51 - Second driving member; 52 - Detection sensor; 53 - First pressing plate; 54 - Support block; 541 - Opening; 542 - Hollow part; 543 - First connection hole; 55 - Limiting block; 551 - Second connection hole; 6 - Bag picking component; 7 - Second pressing plate. Detailed implementation manners

[0022] 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. It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 cannot be construed as a limitation of the present utility model. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements. If there is no conflict, the embodiments of the present utility model and the various features in the embodiments may be combined with each other, and all are within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 3, as an object of the present utility model, a device for detecting empty bags of a packaging machine is provided. The packaging machine includes a frame 1, at least one set of bag storage grooves 2 provided on the frame 1 for storing packaging bags (not shown), and a transition groove 3 docked with the bag outlet of the bag storage groove 2. An empty bag detection device is provided at the bag outlet of the bag storage groove 2. The empty bag detection device includes a positioning component 4 and a detection component 5. The positioning component 4 includes a first driving member 41 and a positioning member 42. The first driving member 41 is provided on the frame 1. The positioning member 42 moves in the transition groove 3 under the drive of the first driving member 41. Thus, the positioning member 42 can position the packaging bag that slides down onto it from the transition groove 3 or release the packaging bag to further slide down from the transition groove 3. Specifically, when the packaging bag is not an empty bag, the positioning member 42 is driven by the first driving member 41 so that the packaging bag can fall. When it is an empty bag, the positioning member 42 can keep positioning the packaging bag so that the operator can timely take out the empty packaging bag to avoid mixing the empty bag with the packaging bags containing items such as facial mask cloth and dried meat slices. The detection component 5 includes a second driving member 51, a detection sensor 52, and a first pressing plate 53. The second driving member 51 and the detection sensor 52 are both provided on the frame 1. The detection sensor 52 is connected to the first pressing plate 53. The second driving member 51 drives the first pressing plate 53 to press against the packaging bag positioned by the positioning member 42 so that the detection sensor 52 can detect the thickness of the packaging bag. Specifically, the preset thickness value of the packaging bag containing the item can be measured in advance and reasonably calculated. When the detected thickness value of the packaging bag is greater than or equal to the preset thickness value, it belongs to the normal detection situation, that is, there is no empty bag. When the detected thickness value of the packaging bag is less than the preset thickness value, it belongs to the abnormal detection situation, that is, there is an empty bag. Therefore, the device for detecting empty bags of the packaging machine provided by the present utility model can identify empty bags during the production process through the empty bag detection device provided on the packaging machine. This empty bag detection device has the advantages of simple operation, time-saving and labor-saving for empty bag detection, and improving production efficiency. Moreover, on the one hand, as long as the empty bag detection device is configured on the existing packaging machine, the existing packaging machine can conveniently add the empty bag detection function with minimal change to the original structure. On the other hand, the newly launched packaging machine has the empty bag detection function by configuring the empty bag detection device, enhancing its market competitiveness. Therefore, in both aspects, the technical problem of the existing empty bags being unable to be identified can be solved, achieving great economic benefits.

[0024] Please refer to Figure 1, Preferably, the packaging machine further includes a bag-taking component 6 for taking out the packaging bags in the bag storage tank 2 and placing them into the corresponding transition tank 3. The frame 1 includes a frame platform 11 which is horizontally arranged and located below the bag-taking component 6. The positioning component 4 and the detection component 5 are respectively located below and above the frame platform 11. In this way, the overall structure of the empty bag detection device is compact and space-saving. It is not only convenient for the assembly of the positioning component 4 and the detection component 5 relative to both sides of the frame platform 11, but also convenient for taking out the empty bags from the positioning component 4. Moreover, an operation interface and buttons can be set on the machine platform, which is convenient for the operator to operate closer to the positioning component 4.

[0025] Please refer to Figure 2 , Specifically, the packaging machine further includes a second pressing plate 7 fixed below the bag outlet of the bag storage tank 2. The first pressing plate 53 and the second pressing plate 7 are arranged oppositely, and the second driving member 51 drives the first pressing plate 53 to move relative to the second pressing plate 7 in a relatively approaching or relatively separating manner. Therefore, by providing the second pressing plate 7 opposite to the first pressing plate 53, the packaging bag can be pressed against with a larger contact area and stably, ensuring the detection accuracy of the detection sensor 52. And since the second pressing plate 7 is in a fixed state, compared with the case where two relatively moving parts are used to press the positioned packaging bag, one tolerance error is reduced, making the detection result more accurate. In addition, the second pressing plate 7 also serves to block the bottom of the packaging bag from sliding out of the bag storage tank 2. Thus, the second pressing plate 7 simultaneously performs the functions originally required by two components, saving costs.

[0026] Please refer to Figure 3 and Figure 4 , Specifically, the detection component 5 further includes a support block 54. The support block 54 is fixed to the frame 1. The detection sensor 52 is fixed to the support block 54 and is preferably vertically connected to the first pressing plate 53. The support block 54 is provided with a communicating opening 541 and a hollow part 542. The first pressing plate 53 is arranged on the side of the support member facing away from the hollow part 542 and facing the transition tank 3. The second driving member 51 is arranged in the hollow part 542, and the second driving member 51 is connected to the first pressing plate 53 through the opening 541 to drive the first pressing plate 53 to move. Therefore, the overall structure of the detection component 5 is compact and the connection reliability is high, and the moving accuracy of the first pressing plate 53 is high.

[0027] More specifically, a first connection hole 543 is provided on the support block 54, and a first fixing hole (not shown) corresponding to the first connection hole is provided on the machine frame 1. The corresponding first connection hole 543 and the first fixing hole are connected by a connecting member. At least a pair of limiting blocks 55 are provided on the support block 54. A second connection hole 551 is provided on the limiting block 55, and a second fixing hole (not shown) corresponding to the second connection hole is provided on the support block 54. The corresponding second connection hole 551 and the second fixing hole are connected by a connecting member. Each pair of limiting blocks 55 clamps the detection sensor 52. Among them, each connection hole and each fixing hole can be threaded holes, and the connecting member can be a bolt, a stud, etc. In this way, not only is the support block 54 reliably fixed, but also the second driving member 51 is reliably supported.

[0028] Please refer to Figure 4 Preferably, the positioning member 42 is provided as a positioning block extending in a direction perpendicular to the extending direction of the transition groove 3, and a pair of parallel and juxtaposed protrusions 421 are provided at its free end. In this way, the positioning member 42 and its protrusions 421 increase the area and strength of supporting and positioning the packaging bag. The positioning member 42 moves under the drive of the first driving member 41 to adjust the relative distance between its free end and the transition groove 3. After the detection assembly 5 completes the thickness detection of the packaging bag, for the packaging bag with normal detection, the relative distance is adjusted to increase to release the packaging bag to further slide down from the transition groove 3. For the packaging bag with abnormal detection, the relative distance is maintained at the relative distance corresponding to positioning the packaging bag sliding down from the transition groove 3. Therefore, with the help of the empty bag detection device, the packaging machine can automatically stop waiting to remove the empty bag only when an abnormal situation of detecting an empty bag occurs, and can timely drop the packaging bag after detection in the case of normal detection for subsequent processes, improving the production efficiency.

[0029] Please refer to Figure 3 Preferably, the positioning assembly 4 further includes a bracket 43 fixedly connected to the machine frame 1, a movable plate 44, and a guiding assembly for guiding the movement of the movable plate 44. By fixedly connecting the bracket 43 to the machine frame 1, the fixing reliability and assembly convenience of the bracket 43 can be improved. The positioning member 42 is fixed to the movable plate 44. The first driving member 41 is supported by the bracket 43 and is drivingly connected to the movable plate 44. The guiding assembly includes a guide sleeve 45 provided on the bracket 43 and a guide rod 46 passing through and slidingly cooperating with the guide sleeve 45. The guide rod 46 is connected to the movable plate 44. In this way, the guiding assembly improves the stability of the positioning member 42 during horizontal movement.

[0030] Please refer to Figure 3, specifically, both the first driving member 41 and the second driving member 51 are cylinders with telescopic cylinder rods. The cylinder rod of the first driving member 41 is fixedly connected to the positioning member 42, and the cylinder rod of the second driving member 51 is fixedly connected to the first pressing plate 53. The detection sensor 52 is a thickness sensor. In addition, the detection sensor 52 can also be set as an infrared sensor, which includes an infrared emitter and an infrared receiver. When the infrared rays emitted by the infrared emitter are not blocked by an object to be packed such as a facial mask cloth and are emitted by the second pressing plate 7, they can be received by the infrared receiver. Thus, when the detection result of the infrared sensor is non-empty bag, otherwise, the detection result is an empty bag. Therefore, this infrared sensor also indirectly detects the different thicknesses due to the presence or absence of an object to be packed in the packaging bag. The storage bag slots 2 and their corresponding transition slots 3 are provided in multiple groups, and the empty bag detection devices are provided in more than two. Each empty bag detection device includes a plurality of positioning components 4 and a plurality of detection components 5 arranged in one-to-one correspondence with the transition slots 3. Preferably, the total number of the positioning components 4, the total number of the detection components 5, and the total number of groups are equal. That is, one positioning component 4 and one detection component 5 are arranged in each transition slot 3, so that while achieving the desired technical effects, the cost is relatively lower. Moreover, by setting the empty bag detection devices in more than two, the operation of each empty bag detection device does not affect each other. Even if there is an empty bag in a certain transition slot 3 of one empty bag detection device, only the transition slots 3 corresponding to this empty bag detection device will wait for the empty bag to be taken out before continuing to drop the packaging bag, while the transition slots 3 corresponding to the other empty bag detection devices can normally drop the packaging bags, which is beneficial to improving the working efficiency of the packaging machine.

[0031] As another object of the present invention, a packaging machine is provided, which includes the empty bag detection device of any one of the above packaging machines. The packaging machine can be used for packaging sheet foods such as dried meat slices and facial mask cloths with packaging bags, and has the beneficial technical effects brought by any one of the above empty bag detection devices, which will not be elaborated here. Therefore, it has the advantages of enabling the packaging machine to have the ability to detect empty bags and bringing good economic benefits to manufacturers.

[0032] Specifically, the packaging bag is used for packaging facial mask cloths. Therefore, this packaging machine is essentially a facial mask packaging machine, which can solve the drawback that existing facial mask packaging machines are more likely to encounter the problem of not being able to identify empty bags, thus solving the problem of empty bags flowing into the market, protecting the interests and consumption experience of facial mask consumers, and achieving great economic benefits for manufacturers.

[0033] Finally, it should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An empty bag detection device for a packaging machine, the packaging machine comprising a frame, at least one set of bag storage grooves provided on the frame for storing packaging bags, and a transition groove docked with the bag outlet of the bag storage groove, characterized in that, An empty bag detection device is provided at the bag outlet of the bag storage tank. The empty bag detection device includes: A positioning assembly, which includes a first driving member and a positioning member. The first driving member is arranged on the machine frame. The positioning member moves in the transition tank under the drive of the first driving member, so that the positioning member can position the packaging bag that slides down from the transition tank onto it or release the packaging bag to further slide down from the transition tank. A detection assembly, which includes a second driving member, a detection sensor, and a first pressing plate. The second driving member and the detection sensor are both arranged on the machine frame. The detection sensor is connected to the first pressing plate. The second driving member drives the first pressing plate to press against the packaging bag positioned by the positioning member so that the detection sensor can detect the thickness of the packaging bag.

2. The empty bag detection device of the packaging machine according to claim 1, characterized in that, The packaging machine further includes a bag taking component for taking out the packaging bags in the bag storage tank and putting them into the corresponding transition tanks. The machine frame includes a machine frame platform, which is horizontally arranged and located below the bag taking component. The positioning assembly and the detection assembly are respectively located below and above the machine frame platform.

3. The empty bag detection device for a packaging machine according to claim 1, characterized in that: The packaging machine further includes a second pressing plate fixed below the bag outlet of the bag storage tank. The first pressing plate and the second pressing plate are arranged oppositely. The second driving member drives the first pressing plate to move relative to the second pressing plate in a relatively approaching or relatively separating manner.

4. The empty bag detection device for a packaging machine according to claim 1, characterized in that: The detection assembly further includes a support block, which is fixed on the machine frame. The detection sensor is fixed on the support block and connected to the first pressing plate. The support block is provided with a communicating opening and a hollow part. The first pressing plate is arranged on the side of the support block facing away from the hollow part and facing the transition tank. The second driving member is arranged in the hollow part. The second driving member is connected to the first pressing plate through the opening to drive the first pressing plate to move.

5. The empty bag detection device of the packaging machine according to claim 4, characterized in that, The support block is provided with a first connection hole, and the machine frame is provided with a first fixing hole corresponding to the first connection hole. The corresponding first connection hole and first fixing hole are connected through a connecting piece. At least a pair of limiting blocks are fixed on the support block. The limiting blocks are provided with second connection holes, and the support block is provided with second fixing holes corresponding to the second connection holes. The corresponding second connection holes and second fixing holes are connected through a connecting piece. Each pair of the limiting blocks clamps the detection sensor.

6. The empty bag detection device of the packaging machine according to claim 1, characterized in that, The positioning member is set as a positioning block extending in a direction perpendicular to the extending direction of the transition tank, and a pair of parallel protrusions are provided at its free end. The positioning member moves under the drive of the first driving member to adjust the relative distance between its free end and the transition tank. After the detection assembly completes the thickness detection of the packaging bag, for the packaging bags with normal detection, the relative distance is adjusted to increase to release the packaging bags to further slide down from the transition tank. For the packaging bags with abnormal detection, the relative distance is maintained at the relative distance corresponding to positioning the packaging bags that slide down from the transition tank onto it.

7. The empty bag detection device for a packaging machine according to claim 1, characterized in that: The positioning assembly further includes a bracket fixedly connected to the frame, a movable plate, and a guiding assembly for guiding the movement of the movable plate. The positioning member is fixed to the movable plate. The first driving member is supported by the bracket and is drivingly connected to the movable plate. The guiding assembly includes a guide sleeve provided on the bracket and a guide rod passing through the guide sleeve and slidingly cooperating with it. The guide rod is connected to the movable plate.

8. The empty bag detection device for a packaging machine according to claim 1, characterized in that: Both the first driving member and the second driving member are cylinders having telescopic cylinder rods. The cylinder rod of the first driving member is fixedly connected to the positioning member. The cylinder rod of the second driving member is fixedly connected to the first pressing plate. The detection sensor is a thickness sensor. The bag storage grooves and their corresponding transition grooves are provided in multiple groups. The empty bag detection devices are provided in more than two. Each empty bag detection device includes a plurality of positioning assemblies and a plurality of detection assemblies arranged in one-to-one correspondence with the transition grooves.

9. A packaging machine, characterized in that: An empty bag detection device for a packaging machine according to any one of claims 1-8.

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