Foreign matter detection mechanism at sealing opening of packaging bag

Abstract

The utility model discloses a packaging bag sealing foreign matter detection mechanism, which relates to the technical field of detection, and adopts the technical scheme that the packaging bag sealing foreign matter detection mechanism comprises a fixing unit, and a reference detection part is arranged on one side of the fixing unit; the motion unit is arranged on one side of the reference detection part of the fixed unit, the motion unit is provided with an active detection part, and the active detection part can be close to or far away from the reference detection part; the detection unit can feed back the moving speed of the active detection part; the reference detection part and the active detection part are both long-strip-shaped structural bodies, and a containing space for the sealing position of a packaging bag to be detected is formed between the reference detection part and the active detection part. The packaging bag sealing device has the advantages that the packaging bag sealing device is simple in structure, and whether foreign matter is clamped at the sealing position of a packaging bag or not can be detected through the magnetic grid type detection assembly. Even clamped objects which are easy to smash can be detected. The number of the whole components of the mechanism is small, and the mechanism can be combined with an existing production line.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a foreign matter detection mechanism at the sealing portion of a packaging bag. Background Art

[0002] The application fields of product packaging bags vary according to the specific materials to be packaged. Generally speaking, larger bulk materials are easier to seal the packaging bags, while small particle materials are easier to fill into the packaging bags.

[0003] When filling large bulk materials into packaging bags, the direction of the materials needs to be adjusted before they can be loaded into the bags. However, due to their integrity, there are basically no problems when sealing the bags. In contrast, granular or powdery materials can be quantitatively loaded into the bags using only the corresponding filling equipment. However, when sealing the bags, it is easy for particles or powder to remain at the seal. In this case, the seal may be loose, causing the materials in the bags to leak out or the seal of the bags to be easily damaged. Therefore, it is necessary to inspect the seal of the bag after the sealing is completed in order to eliminate problematic packaging in advance. Utility Model Content

[0004] In view of one of the deficiencies of the prior art, the utility model provides a foreign matter detection mechanism at the sealing portion of a packaging bag, which solves the problem of detecting whether there is residual material at the sealing portion of the packaging bag.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a foreign body detection mechanism at the sealing portion of a packaging bag, comprising:

[0006] The fixed unit is a fixed detection structure, and a reference detection part is arranged on one side of the fixed unit;

[0007] A motion unit is provided corresponding to the fixed unit and is provided on one side of the reference detection part of the fixed unit. The motion unit is provided with an active detection part, and the active detection part can move closer to or farther from the reference detection part.

[0008] A detection unit, linked with the active detection unit, the detection unit can feedback the moving speed of the active detection unit, or feedback the relative distance between the moving part and the reference detection unit;

[0009] The reference detection part and the active detection part are both long strip-shaped structures, and a space is provided between the reference detection part and the active detection part for placing the sealing part of the packaging bag to be detected.

[0010] Preferably, the fixing unit comprises:

[0011] A fixed frame, fixedly connected to the reference detection part, and the active detection part and the fixed frame are slidably connected;

[0012] The protective shell is buckled on the outside of the fixing frame and the outside of the detection unit.

[0013] Preferably, the fixing frame comprises:

[0014] A lower fixed structure, comprising a horizontally arranged mounting plate, the motion unit being connected to the mounting plate;

[0015] An upper fixed structure is arranged on the upper side of the mounting plate of the lower fixed structure, and the upper fixed structure includes a horizontally arranged connecting plate, and the connecting plate and the mounting plate are fixedly connected by a vertical plate group;

[0016] The suspension structure is a "7"-shaped structure, the upper part of the suspension structure is fixedly connected to the connecting plate of the upper fixed structure, and the lower part is fixedly connected to the reference detection part.

[0017] Preferably, a horizontally extending long groove is provided on the connecting plate of the upper fixed structure; the upper part of the suspension structure is slidably connected to the connecting plate through the long groove, and a locking bolt is provided between the connection between the two.

[0018] Preferably, the motion unit further comprises:

[0019] The driving member can drive the active detection part to move toward or away from the reference detection part; the driving member includes a fixed part and a movable part, wherein the fixed part is fixedly connected to the mounting plate of the lower fixed structure, and the movable part is linked to the active detection part.

[0020] Preferably, the motion unit further comprises:

[0021] A first connecting member, disposed between the movable portion of the driving member and the active detection portion;

[0022] Two first connecting members are provided, and the two first connecting members are respectively fixedly connected to one side of the active detection part away from the reference detection part.

[0023] Preferably, the driving member is a cylinder, and the motion unit further comprises:

[0024] The second connecting member includes a connecting block, which is a long strip structure, one side of which is fixedly connected to the end of the piston rod of the driving member; two parallel connecting rods are arranged on the other side of the connecting block, and each connecting rod is fixedly connected to one of the first connecting members.

[0025] Preferably, the motion unit further comprises:

[0026] A guide rail, fixedly arranged at the lower side of the mounting plate of the lower fixed structure, one guide rail is arranged corresponding to each of the first connecting members; the length direction of the guide rail is the movement direction of the active detection part;

[0027] A sliding groove is provided on the upper side of the first connecting member, and the sliding groove and the guide rail are slidably connected.

[0028] Preferably, the active detection unit further includes:

[0029] The buffer strip is arranged on a side of the active detection portion facing the reference detection portion, and the buffer strip is made of elastic material.

[0030] Preferably, the detection unit comprises a magnetic grating detection assembly, and a magnetic grating detection head of the magnetic grating detection assembly and the active detection part move synchronously.

[0031] A material packaging line is a packaging assembly line, with the direction in which the assembly line completes packaging being the tail end of the assembly line, and a foreign body detection mechanism as described above being arranged at the tail end.

[0032] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a simple structure, and can detect whether there is foreign matter clamped at the sealing part of the packaging bag by means of a magnetic grating detection component. Even easily crushed clamped objects can be detected. Moreover, the overall number of components of the present invention is relatively small, and it can be combined with the existing production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0034] Figure 2 The internal structure of the embodiment of the present application is shown in FIG. Figure 1 ;

[0035] Figure 3 The internal structure of the embodiment of the present application is shown in FIG. Figure 2 ;

[0036] Figure 4 The internal structure of the embodiment of the present application is shown in FIG. Figure 3 .

[0037] In the figure:

[0038] 1. Fixed unit; 11. Reference detection part; 12. Fixed frame; 121. Lower fixed structure; 122. Upper fixed structure; 123. Suspension structure; 13. Protective shell; 2. Moving unit; 21. Active detection part; 211. Buffer strip; 22. Driving part; 23. First connecting part; 24. Second connecting part; 3. Detection unit; 31. Magnetic grating detection head. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] See also Figure 1-Figure 4 , this application provides the following technical solutions:

[0041] A foreign body detection mechanism at the sealing portion of a packaging bag comprises a fixed unit 1 and a moving unit 2. The fixed unit 1 is a fixed detection structure, and a reference detection unit 11 is arranged on one side of the fixed unit 1; the moving unit 2 is arranged corresponding to the fixed unit 1, and is arranged on one side of the reference detection unit 11 of the fixed unit 1. The moving unit 2 is provided with an active detection unit 21, and the active detection unit 21 can move closer to or away from the reference detection unit 11. The detection unit 3 is linked with the active detection unit 21, and the detection unit 3 can feedback the moving speed of the active detection unit 21, or feedback the relative distance between the moving unit 21 and the reference detection unit 11.

[0042] The reference detection part 11 and the active detection part 21 are both long strip structures, and their lengths only need to be greater than the length of the sealing position of the packaging bag to be detected. Between the reference detection part 11 and the active detection part 21 is a placement space for the sealing position of the packaging bag to be detected.

[0043] During the detection, the position of the reference detection part 11 remains fixed, and the active detection part 21 is close to the reference detection part 11 to clamp the sealing part of the packaging bag.

[0044] For the detection unit 3, two different methods can be used to realize the detection of the sealing part of the packaging bag. First, the moving speed of the active detection part 21 can be detected. When the active detection part 21 is moving normally, its movement should be uniform until the sealing part of the packaging bag is clamped and the entire movement stroke is completed. However, if there is material clamped at the sealing part of the packaging bag, the material will cause the sealing part to bulge, and the active detection part 21 will first touch the foreign matter and then be blocked, thereby changing the movement speed. With this feature, the movement speed of the active detection part 21 can be detected to obtain feedback on whether there is a foreign matter at the sealing position of the packaging bag.

[0045] Another method is to detect the distance between the active detection part 21 and the reference detection part 11. This method is suitable for the case where the foreign matter itself has sufficient hardness and will not be crushed or damaged by the movement of the active detection part 21. When the active detection part 21 touches the foreign matter, it cannot continue to move, so the distance between it and the reference detection part 11 must be different from the normal distance. With this principle, the detection of foreign matter at the sealing part of the packaging bag can also be realized.

[0046] On the basis of the above implementation scheme, the detection unit 3 adopts a magnetic grating detection component, and the magnetic grating detection head 31 of the magnetic grating detection component and the active detection part 21 move synchronously. Considering that the hardness of granular materials or powdered materials will be low even if they are stuck at the sealing part of the packaging bag, this solution detects the moving speed of the active detection part 21 through the magnetic grating detection component. The magnetic grating detection component can achieve high accuracy in detecting the moving speed of the detection object, which has an excellent effect on solving the problems in the background technology of this solution.

[0047] The magnetic grating detection component of this solution can adopt existing technology. The main innovation of this solution is to apply this technology to the detection of packaging bag seals. For the specific structure of the magnetic grating detection component, existing technology can be adopted and will not be repeated here.

[0048] Based on the above implementation scheme, see Figure 2 and Figure 3 A buffer strip 211 is disposed on the block of the active detection portion 21 . The buffer strip 211 is made of an elastic material and is disposed on a side of the active detection portion 21 facing the reference detection portion 11 .

[0049] The motion unit 2 also includes a driving member 22 as a power, and the driving member 22 can drive the active detection part 21 to translate, so as to realize the active detection part 21 to move toward or away from the reference detection part 11. The driving member 22 is a cylinder, which includes a cylinder body as a fixed part and a piston rod as a movable part. The fixed part of the driving member 22 is fixedly connected to the fixed unit 1, and the movable part is linked to the active detection part 21.

[0050] Because the active detection part 21 and the reference detection part 11 are both made of hard materials, when the cylinder is used as the driving part 22, the material may be directly pushed and crushed, which will cause inaccurate detection results. The buffer bar 211 has two functions. One is that when the buffer bar 211 squeezes the material, it will not directly crush the material. The material passing through the buffer bar 211 can better affect the movement speed of the active detection part 21, thereby obtaining a more accurate detection result. In addition, by setting the buffer bar 211, the buffer bar 211 forms a protruding strip structure, which can also better push the sealing part of the packaging bag.

[0051] Based on the above implementation scheme, see Figures 1 to 3 The fixing unit 1 includes a fixing frame 12 and a protective shell 13. The fixing frame 12 is fixedly connected to the reference detection part 11, and the active detection part 21 is slidably connected to the fixing frame 12. The protective shell 13 is buckled on the outside of the fixing frame 12 and the outside of the detection unit 3.

[0052] The fixing frame 12 can be divided into a lower fixing structure 121 and an upper fixing structure 122. The lower fixing structure 121 includes a horizontally arranged mounting plate, and the driving member 22 of the motion unit 2 is connected to the mounting plate; the upper fixing structure 122 is arranged on the upper side of the mounting plate of the lower fixing structure 121, and the upper fixing structure 122 includes a horizontally arranged connecting plate, and the connecting plate and the mounting plate are fixedly connected by a vertical plate group; the vertical plate group adopts a "T"-shaped structure as a whole, and the "T"-shaped structure is the display state of the mechanism when viewed from above. The vertical plate group is fixedly arranged on the lower side of the mounting plate to play a role in stabilizing and supporting the mounting plate.

[0053] A suspension structure 123 is suspended at the lower side of the end of the mounting plate. The suspension structure 123 is a "7"-shaped structure, including a vertically arranged horizontal plate and a vertical plate. The upper part of the suspension structure 123, that is, the horizontal plate, is fixedly connected to the connecting plate of the upper fixed structure 122, and the lower part of the suspension structure 123, that is, the vertical plate, is fixedly connected to the reference detection part 11. A right-angled triangle reinforcement plate is arranged between the horizontal plate and the vertical plate.

[0054] On the basis of the above implementation scheme, a horizontally extending long groove is opened on the connecting plate of the upper fixed structure 122; the cross plate of the suspension structure 123 is slidably connected to the connecting plate through the long groove, and a locking bolt is provided between the connection between the two.

[0055] A plurality of connection columns are respectively provided on the upper side of the connection plate and the lower side of the mounting plate, and threaded holes are provided on the connection columns, through which the fixing unit 1 is fixedly connected to the protective shell 13. The use of such a connection method of supporting and isolating the protective shell 13 helps to leave space inside the mechanism, which is convenient for heat dissipation of the internal components on the one hand, and can also provide better buffering and resistance to external collisions on the other hand, so as to avoid direct impact of external collisions on the internal components.

[0056] Based on the above implementation scheme, see Figure 4The motion unit 2 also includes a first connecting member 23 and a second connecting member 24. The first connecting member 23 is arranged between the movable part of the driving member 22 and the active detection part 21; two first connecting members 23 are arranged, and the two first connecting members 23 are respectively fixedly connected to the side of the active detection part 21 away from the reference detection part 11. And the two first connecting members 23 are respectively connected to a half position of the active detection part 21. The second connecting member 24 is an overall "U"-shaped structure, including a long strip-shaped connecting block, one side of the connecting block is fixedly connected to the end of the piston rod of the driving member 22; two parallel connecting rods are arranged on the other side, and each connecting rod is fixedly connected to a first connecting member 23.

[0057] The motion unit 2 also includes a guide rail, two of which are fixed on the lower side of the mounting plate of the lower fixed structure 121, and one guide rail is provided corresponding to each first connecting member 23; the length direction of the guide rail is the movement direction of the active detection part 21; a slide groove is provided on the upper side of the first connecting member 23 corresponding to the guide rail, and the guide rail is slidably connected through the slide groove.

[0058] On the basis of the above implementation scheme, with regard to the layout of the detection unit 3 , in addition to the magnetic grating detection head 31 , other related components may also be arranged on the lower side of the mounting plate of the lower fixing structure 121 .

[0059] On the basis of the above implementation scheme, considering that the position of the reference detection part 11 is fixed, it is prevented from changing its position due to the push of the active detection part 21 during long-term use. Therefore, a sensor can be set on the side of the longitudinal plate of the suspension structure 123 away from the active detection part 21. The sensor can be an electrically connected alarm component. When the suspension structure 123 is in a normal position, the sensor is not triggered. When the position of the suspension structure 123 changes, the alarm component is triggered. The alarm component can be a warning light or a speaker, etc.

[0060] As for the specific form of the sensor, an existing structure may be used, such as a touch-type micro switch, or other related components that can ensure feedback of small displacements.

[0061] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 therefore should not be understood as a limitation on the present application.

[0062] In the present application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" 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, an electrical connection, or a communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0063] In the present application and its embodiments, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0064] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0065] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A foreign body detection mechanism at the sealing portion of a packaging bag, characterized in that: include: The fixed unit is a fixed detection structure, and a reference detection part is arranged on one side of the fixed unit; A motion unit is provided corresponding to the fixed unit and is provided on one side of the reference detection part of the fixed unit. The motion unit is provided with an active detection part, and the active detection part can move closer to or farther from the reference detection part. A detection unit, linked with the active detection unit, the detection unit can feedback the moving speed of the active detection unit, or feedback the relative distance between the moving part and the reference detection unit; The reference detection part and the active detection part are both long strip-shaped structures, and a space is provided between the reference detection part and the active detection part for placing the sealing part of the packaging bag to be detected.

2. The foreign body detection mechanism at the sealing portion of the packaging bag according to claim 1, characterized in that: The fixing unit comprises: A fixed frame, fixedly connected to the reference detection part, and the active detection part and the fixed frame are slidably connected; The protective shell is buckled on the outside of the fixing frame and the outside of the detection unit.

3. The foreign body detection mechanism at the sealing portion of the packaging bag according to claim 2, characterized in that: The fixing frame comprises: A lower fixed structure, comprising a horizontally arranged mounting plate, the motion unit being connected to the mounting plate; An upper fixed structure is arranged on the upper side of the mounting plate of the lower fixed structure, and the upper fixed structure includes a horizontally arranged connecting plate, and the connecting plate and the mounting plate are fixedly connected by a vertical plate group; The suspension structure is a "7" shaped structure, the upper part of the suspension structure is fixedly connected to the connecting plate of the upper fixed structure, and the lower part is fixedly connected to the reference detection part.

4. The foreign body detection mechanism at the sealing portion of the packaging bag according to claim 3, characterized in that: A horizontally extending long groove is provided on the connecting plate of the upper fixed structure; the upper part of the suspension structure is slidably connected with the connecting plate through the long groove, and a locking bolt is provided between the connection of the two.

5. The foreign body detection mechanism at the sealing portion of the packaging bag according to claim 4, characterized in that: The motion unit further comprises: The driving member can drive the active detection part to move toward or away from the reference detection part; the driving member includes a fixed part and a movable part, wherein the fixed part is fixedly connected to the mounting plate of the lower fixed structure, and the movable part is linked to the active detection part.

6. The foreign body detection mechanism at the sealing portion of the packaging bag according to claim 5, characterized in that: The motion unit further comprises: A first connecting member, disposed between the movable portion of the driving member and the active detection portion; Two first connecting members are provided, and the two first connecting members are respectively fixedly connected to one side of the active detection part away from the reference detection part.

7. The foreign body detection mechanism at the sealing portion of the packaging bag according to claim 6, characterized in that: The driving member is a cylinder, and the motion unit further comprises: The second connecting member includes a connecting block, which is a long strip structure, one side of which is fixedly connected to the end of the piston rod of the driving member; two parallel connecting rods are arranged on the other side of the connecting block, and each connecting rod is fixedly connected to one of the first connecting members.

8. The foreign body detection mechanism at the sealing portion of the packaging bag according to claim 7, characterized in that: The motion unit further comprises: A guide rail, fixedly arranged at the lower side of the mounting plate of the lower fixed structure, one guide rail is arranged corresponding to each of the first connecting members; the length direction of the guide rail is the movement direction of the active detection part; A sliding groove is provided on the upper side of the first connecting member, and the sliding groove and the guide rail are slidably connected.

9. The foreign body detection mechanism at the sealing portion of a packaging bag according to any one of claims 1 to 8, characterized in that: The active detection unit also includes: The buffer strip is arranged on a side of the active detection portion facing the reference detection portion, and the buffer strip is made of elastic material.

10. The foreign body detection mechanism at the sealing portion of a packaging bag according to any one of claims 1 to 8, characterized in that: The detection unit comprises a magnetic grating detection assembly, and a magnetic grating detection head of the magnetic grating detection assembly and the active detection part move synchronously.

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