CN111637995A - End socket pressure detection method and device - Google Patents

Abstract

The present application provides a head pressure detection method and device. The above-mentioned head pressure detection method includes: acquiring a pressure line image of the pressure measurement piece, wherein the pressure line image is an image formed by the first head and the second head clamping the pressure measurement piece; The pressure line image is obtained, and along the direction parallel to the pressure line, the brightness values of multiple squeeze areas are sequentially obtained, wherein the images of the multiple squeeze areas constitute the pressure line image; the pressure line image is correspondingly obtained according to the brightness values. value and send the pressure value to the detection system. By obtaining the brightness of the pressure line left after the head squeezes the pressure measuring piece, the pressure is converted in the form of brightness value, so that the brightness on the pressure line corresponds to the pressure at each position of the head, so as to accurately obtain the pressure at each position of the head. The amount of pressure during extrusion, and the pressure distribution.

Description

Head pressure detection method and device

technical field

The invention relates to the technical field of pressure detection, in particular to a method and device for pressure detection of a head.

Background technique

With the technological development of soft-pack lithium-ion batteries, it has many advantages such as small size, light weight, high specific energy, high safety, and flexible design. Therefore, it is widely used in 3C digital and automotive power battery industries, gradually replacing traditional Lithium-ion batteries have become mainstream lithium-ion batteries.

In the production process of soft-pack ion lithium batteries, the top sealing of the packaging film and the tabs and the side sealing between the packaging films are required. Moisture enters the core body, and the top-side sealing equipment currently uses a T-shaped copper head. During packaging, the aluminum-plastic film is heated and pressurized, so that between the aluminum-plastic film and the electrode rubber, and between the aluminum-plastic film The PP glue is bonded together to achieve the sealing effect. The parallelism and pressure of the two heads during the production process determine the sealing effect. In the actual production process of soft-pack lithium-ion batteries, due to the difference in the parallelism of the upper and lower heads, the thickness of the edge sealing is inconsistent, which eventually leads to liquid leakage, corrosion, etc., resulting in product failure. Moreover, even if the head is still parallel, after a period of use, the surface of the head will be worn out, forming defects, which will cause insufficient pressure on the aluminum-plastic film, resulting in the failure of good fusion between the aluminum-plastic films, resulting in poor batteries. product. Therefore, in the actual production process, a quick and convenient detection method for the parallelism of the head, the defect of the head and the pressure of the contact of the head is required.

In the traditional detection method, only carbon paper is used to test the parallelism of the head. Although the parallelism of the head can be tested qualitatively, it is still unable to quantitatively display the actual pressure, so the pressure on the head cannot be realized. Take accurate measurements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a head pressure detection method and device for solving the above-mentioned technical problems.

The purpose of this invention is to realize through the following technical solutions:

A head pressure detection method, comprising: acquiring a pressure line image of the pressure measurement piece, wherein the pressure line image is an image formed by a first head and a second head clamping the pressure measurement piece; according to The pressure line image and along the direction parallel to the pressure line, sequentially acquire the brightness values of multiple squeezed regions, wherein the images of the multiple squeezed regions constitute the pressure line image; correspondingly obtained according to the brightness values pressure value and send the pressure value to the detection system.

In one embodiment, the acquiring the pressure line image of the pressure measuring element includes: scanning the pressure measuring element along a preset direction, and acquiring a color value distribution image of the pressure measuring element; The value distribution image acquires the pressure line image.

In one embodiment, the obtaining the pressure line image according to the color value distribution image includes: obtaining color values to be measured in a plurality of image areas according to the color value distribution image; detecting the color value to be measured Whether it matches the preset color value; when the color value to be measured matches the preset color value, obtain the position parameter of the image area corresponding to the color value to be measured; according to the position parameter of the image area, form The pressure line image.

In one embodiment, the obtaining the pressure line image according to the color value distribution image includes: obtaining color values to be measured in a plurality of image areas according to the color value distribution image; detecting the color value to be measured Whether it matches the preset color value; when the color value to be measured matches the preset color value, obtain the position parameter of the image area corresponding to the color value to be measured; according to the position parameter of the image area, form The pressure line image.

In one embodiment, before acquiring the pressure line image of the pressure measuring member, the method further includes: driving the first sealing head and the second sealing head to move toward the pressure measuring member; at a preset time Inside, the first sealing head and the second sealing head are driven to squeeze the two side surfaces of the pressure measuring piece respectively.

In one embodiment, the preset time is 1-8 seconds.

In one of the embodiments, the preset time is 5 seconds.

In one embodiment, the corresponding acquisition of the pressure value according to the brightness value, and sending the pressure value to the detection system, further includes: detecting whether the brightness values of any two squeezed regions are equal; when When the brightness values of any two of the extrusion areas are equal, a normal signal of the head is sent to the detection system.

In one embodiment, the detecting whether the brightness values of any two squeezed regions are equal, further includes: when the brightness values of any two squeezed regions are not equal, sending a message to the detection system Head abnormal signal.

A head pressure detection device, comprising a first head, a second head, a pressure measurement piece, a collection module and a processing module, the first head and the second head are oppositely arranged, and the pressure measurement piece It is arranged between the first head and the second head, and the pressure measuring element is used to obtain the pressure line when the first head and the second head are extruded. The acquisition module The output end of the processing module is connected to the input end of the processing module, and the output end of the processing module is used to connect with the detection system; the acquisition module is used to obtain the pressure line image of the pressure measurement piece, wherein the pressure The line image is an image formed by the first head and the second head clamping the pressure measuring piece; according to the pressure line image and along the direction parallel to the pressure line, the brightness values of the plurality of extrusion areas are sequentially obtained, wherein , a plurality of images of the pressing area constitute the pressure line image; the processing module is configured to obtain a corresponding pressure value according to the brightness value, and send the pressure value to the detection system.

Compared with the prior art, the present invention has at least the following advantages:

By obtaining the brightness of the pressure line left after the head squeezes the pressure measuring piece, the pressure is converted in the form of brightness value, so that the brightness on the pressure line corresponds to the pressure at each position of the head, so as to accurately obtain the pressure at each position of the head. The amount of pressure during extrusion, and the pressure distribution.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

1 is a flowchart of a method for detecting head pressure in an embodiment;

FIG. 2 is a schematic structural diagram of a head pressure detection device in an embodiment.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention relates to a head pressure detection method. In one embodiment, the head pressure detection method includes: acquiring a pressure line image of the pressure measuring element, wherein the pressure line image is a measurement of the pressure when the first head and the second head clamp the pressure According to the pressure line image and along the direction parallel to the pressure line, sequentially obtain the brightness values of a plurality of squeeze areas, wherein, the images of the multiple squeeze areas constitute the pressure line image; according to The brightness value corresponds to the acquired pressure value, and the pressure value is sent to the detection system. By obtaining the brightness of the pressure line left after the head squeezes the pressure measuring piece, the pressure is converted in the form of brightness value, so that the brightness on the pressure line corresponds to the pressure at each position of the head, so as to accurately obtain the pressure at each position of the head. The amount of pressure during extrusion, and the pressure distribution.

Please refer to FIG. 1 , which is a flowchart of a head pressure detection method according to an embodiment of the present invention. The head pressure detection method includes part or all of the following steps.

S100: Acquire a pressure line image of the pressure measuring piece, wherein the pressure line image is an image formed by clamping the pressure measuring piece by the first sealing head and the second sealing head.

In this embodiment, the pressure measuring member includes pressure-sensitive paper, the pressure measuring member is pressed by the first sealing head and the second sealing head, and a pressure line is generated on the pressure measuring member. Due to the characteristics of the pressure measuring piece itself, that is, after being squeezed, the squeezed position forms a mark that is different from other uncompressed positions, for example, in the first head and the second Under the extrusion of the head, a red line is produced on the pressure measuring piece. Wherein, the color of the pressure line on the pressure measuring piece is different from the color of the unextruded area around it, which is used to show the specific position where the first sealing head and the second sealing head press the pressure measuring piece . In this way, under the condition that the colors of the pressure lines on the pressure measuring piece are different, it is convenient to quickly obtain the area where the first sealing head and the second sealing head press the pressure measuring piece, so as to facilitate the follow-up according to the required The pressure line image is used to quickly obtain the pressure between the first sealing head and the second sealing head.

S200: According to the pressure line image and along a direction parallel to the pressure line, sequentially acquire luminance values of a plurality of squeezed regions, wherein the images of the plurality of squeezed regions constitute the pressure line image.

In this embodiment, the pressure line image is a straight line image, and the brightness value reflects the brightness of the pressure line image, that is, the brightness value reflects the color depth of the pressure line image. Since the first head and the second head are not parallel or defective during extrusion, the first head or a part of the second head does not squeeze the pressure A measuring element, so that the brightness value of some areas in the pressure line image is different from the brightness of other areas, that is, the brightness of each area of the pressure line image is different, that is, the brightness of each area of the pressure line image. The values are not exactly equal. In this way, in order to facilitate the acquisition of the pressure between the first head and the second head, the brightness values of multiple squeezed regions are obtained from the pressure line image, that is, obtained from the pressure line image Different areas obtain brightness values, and different brightness values reflect that the pressure received by the pressure measuring element is different, so that the pressure between the first head and the second head can also be reflected The size of the situation at different positions, thereby facilitating the subsequent accurate acquisition of the pressure between the first head and the second head, as well as the pressure distribution.

S300: Correspondingly obtain a pressure value according to the brightness value, and send the pressure value to a detection system.

In this embodiment, the characteristic of the pressure measuring element is to form pressing marks with different brightness on it according to the different pressing force, that is, the characteristic of the pressure measuring element is that according to the different pressing force, in its Pressure lines of different shades of color are formed on it. After the first sealing head and the second sealing head press the pressure measuring member, lines with brightness different from other uncompressed areas are left on the pressure measuring member, that is, the pressure line image, By obtaining the brightness values of different squeezed areas, the corresponding pressure values are obtained again. In this way, the pressing force between the first sealing head and the second sealing head is converted into the brightness on the pressure measuring element, and then correspondingly converted into a pressure value according to the brightness value of the pressing area. , so that the pressure between the first head and the second head is converted by the constant brightness, and finally displayed in the form of pressure value, so as to accurately obtain the first head and the second head. The size of the pressure between the two heads, and the distribution of the pressure.

In one embodiment, the acquiring the pressure line image of the pressure measuring element includes: scanning the pressure measuring element along a preset direction, and acquiring a color value distribution image of the pressure measuring element; The value distribution image acquires the pressure line image. In this embodiment, the preset direction is a direction parallel to the first head and the second head, so that the lines in the obtained pressure line image, that is, the preset direction is the same as that of the second head. The extension directions of the lines in the pressure line image are parallel, thereby facilitating the rapid acquisition of the pressure line image. Moreover, during the scanning process, the color value distribution image of the pressure measuring element is obtained by comparing the color values on the pressure measuring element. The color value of the area is different from the color value of the uncompressed area. By analyzing the color value distribution image, it is convenient to quickly obtain the lines on the pressure measuring piece, thereby facilitating the acquisition of the pressure line image.

In one embodiment, the color of the pressure line image is red, and the color of other areas of the pressure measuring element is white. According to the different color values, it is convenient to quickly distinguish and obtain the pressure line image.

In one embodiment, the obtaining the pressure line image according to the color value distribution image includes: obtaining color values to be measured in a plurality of image areas according to the color value distribution image; detecting the color value to be measured Whether it matches the preset color value; when the color value to be measured matches the preset color value, obtain the position parameter of the image area corresponding to the color value to be measured; according to the position parameter of the image area, form The pressure line image. In this embodiment, the color value distribution image includes the color values of all regions on the pressure measuring element, that is, the color value of each position on the pressure measuring element constitutes the color value distribution image. Divide the color value distribution image into color value distribution images of multiple image areas, so that each area on the pressure measuring element corresponds to a color value, and compare the acquired color value to be measured with the preset color value Matching is performed to obtain the required image area. For example, the color of the area where the pressure measuring member is squeezed is red, and the color of the area where the pressure measuring member is not squeezed is white. According to the acquired color to be measured The matching result between the value and the color value corresponding to white, so as to distinguish the squeezed area of the pressure measuring member, and then quickly obtain the squeezed area of the pressure measuring member. In this way, the image area that meets the color value requirements is obtained, and the pressure line image is formed according to its corresponding position parameter, which facilitates the rapid acquisition of the pressure line image on the pressure measuring element.

In one embodiment, the detecting whether the to-be-measured color value matches a preset color value includes: detecting whether the to-be-measured color value is greater than the preset color value; When the color value to be measured matches the preset color value, obtaining the position parameter of the image area corresponding to the color value to be measured includes: when the color value to be measured is greater than the preset color value, obtaining the corresponding value of the brightness value to be measured. The position parameter of the image area. In this embodiment, after the pressure measuring piece is squeezed, a red mark line, that is, a pressure line, is formed on the pressure measuring piece. The original color of the pressure measuring piece is white, so that the pressure measuring piece is not squeezed. The color of the pressed area is white, the preset color value is the color value corresponding to white, and the color value corresponding to white is smaller than the color value corresponding to red. Detecting whether the color value to be measured is greater than the preset color value is to compare the color value of any area on the pressure measuring piece with the color value corresponding to white, and when the pressure measuring piece is squeezed After pressing, there are only two areas of different colors on the pressure measuring piece, namely, the red pressure line area corresponding to the pressed area, and the white area corresponding to the non-pressed area. The color value to be measured is greater than the preset color value, indicating that the color value used for detection is greater than the color value corresponding to white, that is, it indicates that the image area corresponding to the color value to be measured is a squeeze area. In this way, after the pressing area is determined, a plurality of pressing areas are combined to form the pressure line image, and, according to the position parameter of the image area corresponding to the brightness value to be measured, the pressure measuring element is The position parameters corresponding to the squeezed area on the pressure line are determined, so as to facilitate the acquisition of the position of the pressure line image on the pressure measuring element, thereby facilitating the subsequent quick acquisition of the brightness value on the pressure line image.

In one embodiment, before acquiring the pressure line image of the pressure measuring member, the method further includes: driving the first sealing head and the second sealing head to move toward the pressure measuring member; at a preset time Inside, the first sealing head and the second sealing head are driven to squeeze the two side surfaces of the pressure measuring piece respectively. In this embodiment, the first sealing head and the second sealing head are respectively located on two sides of the pressure measuring element, and before the detection is performed, the first sealing head and the second sealing head are It is located at a position away from the pressure measuring piece, and when the opening is detected, the first sealing head and the second sealing head are driven to move, so as to clamp the pressure measuring piece, so as to form the pressure measuring piece on the pressure measuring piece. pressure lines. In order to improve the definition of the pressure line image, it is necessary to adjust the extrusion time of the first head and the second head, that is, to obtain a clearer pressure line image by adjusting the extrusion time. By setting the preset time, the time during which the first head and the second head press the pressure measuring member is prolonged, so that the pressure line image on the pressure measuring member is clearer and the acquisition time is reduced. The probability that the pressure line image is incomplete, thereby improving the accuracy of acquiring the pressure line image, and facilitating the subsequent quick acquisition of the pressure magnitude and distribution according to the pressure line image.

In one embodiment, the first end and the second end are pressed for the preset time, wherein the preset time is the difference between the first end and the second end After the pressing force between the two ends reaches the preset pressure, the first sealing head and the second sealing head continue to squeeze the pressure measuring piece. In this way, the finally obtained pressure value is closer to the actual pressure between the first sealing head and the second sealing head, which further improves the accuracy of obtaining the pressure value.

In one embodiment, the preset time is 1-8 seconds. In one of the embodiments, the preset time is 5 seconds. In this way, the preset time is a short time, that is, the extrusion of the first head and the second head is instantaneous, so that it is convenient to obtain the instantaneous time of the first head and the second head. pressure and distribution.

In one embodiment, the preset time is 1-4 minutes. In one embodiment, the preset time is 2 minutes. In this way, the preset time is a long time, that is, the extrusion of the first head and the second head is continuous extrusion, so that it is convenient to obtain the continuous extrusion of the first head and the second head pressure and distribution.

In one embodiment, the corresponding acquisition of the pressure value according to the brightness value, and sending the pressure value to the detection system, further includes: detecting whether the brightness values of any two squeezed regions are equal; when When the brightness values of any two of the extrusion areas are equal, a normal signal of the head is sent to the detection system. In this embodiment, the squeeze area is an area on the pressure line image, and the pressure line image includes a plurality of the squeeze areas, that is, a plurality of the squeeze areas together constitute the pressure line image. Since there is a problem with the levelness between the first and second heads, and when the first and second heads are in use for a long time, they are used for The extruded side may be worn, for example, the side of the first head and the second head close to the pressure measuring piece is concave, so that the first head and the second head have depressions. There is insufficient or missing pressure between the heads. In order to solve the above technical problem, after obtaining the brightness value of each of the squeezed regions, the brightness values of any two of the squeezed regions are compared, so as to obtain the brightness of each squeezed region of the pressure line image, Further, it is determined whether the color brightness of the pressure line images is the same, that is, it is determined whether the color depths of the pressure line images are consistent. The brightness values of any two of the squeezed areas are equal, indicating that the brightness of each squeezed area of the pressure line image is the same, that is, the color depth of the pressure line image is the same, that is, the first pressure line image has the same brightness value. The pressure at each position between the head and the second head is the same, so that the first head and the second head are parallel to each other, and the first head and the second head are determined. The level of flush between the heads is convenient to quickly determine whether the first end and the second end are flush. In this way, under the condition that the brightness values of any two of the extrusion areas are equal, the first and second heads are flush with each other, and there is no need to compare the first and second heads. The position of the second head is adjusted, and the extrusion operation can be performed. At this time, a normal signal of the sealing head is sent to the detection system, so that the monitoring personnel/operators can obtain the current working status of the first sealing head and the second sealing head in time, thereby reducing the defective product rate of production.

In one embodiment, the detecting whether the brightness values of any two squeezed regions are equal, further includes: when the brightness values of any two squeezed regions are not equal, sending a message to the detection system Head abnormal signal. In this embodiment, the squeeze area is an area on the pressure line image, and the pressure line image includes a plurality of the squeeze areas, that is, a plurality of the squeeze areas together constitute the pressure line image. Since there is a problem with the levelness between the first and second heads, and when the first and second heads are in use for a long time, they are used for The extruded side may be worn, for example, the side of the first head and the second head close to the pressure measuring piece is concave, so that the first head and the second head have depressions. There is insufficient or missing pressure between the heads. In order to solve the above technical problem, after obtaining the brightness value of each of the squeezed regions, the brightness values of any two of the squeezed regions are compared, so as to obtain the brightness of each squeezed region of the pressure line image, Further, it is determined whether the color brightness of the pressure line images is the same, that is, it is determined whether the color depths of the pressure line images are consistent. The brightness values of any two of the squeezed areas are not equal, indicating that the brightness of each squeezed area of the pressure line image is different, which means that the color depth of the pressure line image is different, which means that the pressure line image is different. The pressure at each position between the first and second heads is uneven, for example, the first and second heads are not parallel or inclined; for another example, the first At least one of the sealing head and the second sealing head has a depression, wherein the depression is located on the side of the first sealing head and the second sealing head close to the pressure measuring member, and its opening faces the pressure measurement pieces. The flush degree between the first end head and the second end end is determined, so that it is convenient to quickly judge whether the first end end and the second end end are flush. In this way, in the case that the brightness values of any two of the pressing areas are not equal, the mutual inclination or defect between the first sealing head and the second sealing head needs to be checked for the first sealing head. Adjust the position with the second head, or replace the first head and the second head. At this time, a head abnormality signal is sent to the detection system, which is convenient for monitoring personnel/operators to discover the abnormal conditions of the first head and the second head in time, so as to facilitate the monitoring personnel/operators to adjust or replace the The first header and the second header reduce the defective rate of produced products.

In one of the embodiments, a head pressure detection device is provided, which is realized by using the head pressure detection method described in any of the above embodiments. In one of the embodiments, the head pressure detection device has functional modules corresponding to each step of the head pressure detection method. Referring to FIG. 2 , the sealing head pressure detection device 10 includes: a first sealing head 100 , a second sealing head 200 , a pressure measuring member 300 , a collection module and a processing module, the first sealing head 100 and the second sealing head 100 The sealing heads 200 are arranged opposite to each other, the pressure measuring member is arranged between the first sealing head 100 and the second sealing head 200, and the pressure measurement member 300 is used to obtain the first sealing head 100 and the second sealing head 200. The pressure line when the second head 200 is squeezed, the output end of the collection module is connected to the input end of the processing module, and the output end of the processing module is used for connecting with the detection system; the collection module is used for Acquiring a pressure line image of the pressure measuring element 300, wherein the pressure line image is an image formed by clamping the pressure measuring element 300 between the first sealing head 100 and the second sealing head 200; according to the pressure line image and along the direction parallel to the pressure line, sequentially obtain the brightness values of multiple squeeze areas, wherein, the images of the multiple squeeze areas form the pressure line image; the processing module is configured to correspond to the brightness value according to the A pressure value is obtained and sent to the detection system.

In this embodiment, the first sealing head 100 and the second sealing head 200 are pressed against each other, and the pressure measuring member 300 is clamped therebetween, and the collection module obtains the remaining pressure measurement member 300 after the head presses the pressure measurement member 300. Lower the brightness of the pressure line, convert the pressure in the form of brightness value, and the processing module converts the brightness value into a pressure value correspondingly again, so that the brightness on the pressure line corresponds to the pressure at each position of the head, so as to accurately obtain the seal. The pressure of the head when it is squeezed, and the pressure distribution.

In one embodiment, the first sealing head 100 has a first pressing surface 110 , the second sealing head 200 has a second pressing surface 210 , the first pressing surface 110 and the second pressing surface 110 The pressing surfaces 210 are respectively pressed against two side surfaces of the pressure measuring member 300 , and the pressure measuring member 300 is parallel to at least one of the first pressing surface 110 and the second pressing surface 210 . In this embodiment, the pressure measuring member 300 is disposed between the first sealing head 100 and the second sealing head 200, and the first sealing head 100 and the second sealing head 200 move toward each other, A state of mutual extrusion is achieved, so that the first sealing head 100 and the second sealing head 200 press the pressure measuring member 300 respectively, that is, the two sides of the pressure measuring member 300 are respectively sealed by the first sealing member 300 . The head 100 and the second head 200 are squeezed, that is, the first head 100 presses the second head 200 through the pressure measuring member 300, that is, the second head 200 passes through the pressure measuring member 300. The pressure measuring member 300 presses the first sealing head 100 . The first pressing surface 110 is the pressing surface on the first sealing head 100 , the second pressing surface 210 is the pressing surface on the second sealing head 200 , and the first pressing At least one of the surface 110 and the second pressing surface 210 is parallel to the pressure measuring member 300, so that when the first sealing head 100 and the second sealing head 200 are pressed against each other, the first pressing At least one of the pressing surface 110 and the second pressing surface 210 is used as a standard supporting surface on the pressure measuring member 300 , which facilitates the formation of an accurate pressure line image on the pressure measuring member 300 . In this way, when the first sealing head 100 and the second sealing head 200 are not parallel, the pressure line image can still be extruded on the pressure measuring member 300, so that the first sealing head 100 and all the The mutual pressing force of the second sealing heads 200 is reflected on the pressure measuring member 300 in the form of a pressure line image, so that the pressure line image can be formed on the pressure measuring member 300 .

In one of the embodiments, the first pressing surface is parallel to the pressure measuring member. In one of the embodiments, the second pressing surface is parallel to the pressure measuring member. In one of the embodiments, the first pressing surface and the second flat pressing surface are respectively parallel to the pressure measuring member.

In one embodiment, the pressure measuring member 300 is disposed on the second pressing surface 210 . In this embodiment, since the first sealing head 100 and the second sealing head 200 are used for pressing the pressure measuring member 300 , in order to facilitate the formation of a pressure line image on the pressure measuring member 300 , the The pressure measuring member 300 is disposed on the second pressing surface 210 , that is, the pressure measuring member 300 is placed on the second pressing surface 210 , that is, the second sealing head 200 is close to the first pressing surface 210 . The pressure measuring member 300 is provided on one side of the head 100 . In this way, the second pressing surface 210 and the pressure measuring member 300 are parallel to each other, so that the second pressing surface 210 acts as a pressing support surface, so that the first sealing head 100 presses the When the pressure measuring member 300 is used, the second pressing surface 210 provides support for various positions of the pressure measuring member 300 , thereby facilitating at least part of the first sealing head 100 to press the pressure measuring member 300 , facilitating The pressure line image is formed on the pressure measuring member 300 .

In one of the embodiments, the pressure measuring element is arranged on the first pressing surface. Its function is similar to that of the above-mentioned embodiment, and will not be repeated here.

In one embodiment, the first sealing head 100 includes a first receiving portion 120 and a first pressing portion 130 , and the first receiving portion 120 and the first pressing portion 130 are away from the second sealing portion. One side of the head 200 is connected, and the side of the first pressing part 130 close to the second sealing head 200 is pressed on the pressure measuring member 300 . In this embodiment, the first receiving portion 120 is used to connect a driving component, that is, the driving component drives the first receiving portion 120 to move, for example, the driving component drives the first receiving portion 120 to approach the pressure measuring member 300 to move, for another example, the driving component drives the first receiving portion 120 to move away from the pressure measuring member 300 , so that the driving component drives the first pressing portion 130 to move through the first receiving portion 120 , so that all the The first pressing portion 130 moves close to or away from the pressure measuring member 300 . When the first pressing portion 130 approaches the pressure measuring member 300 , the pressing surface thereon, that is, the first pressing surface 110 is disposed on the first pressing portion 130 away from the One side of the first receiving portion 120 is used to squeeze the pressure measuring member 300 , so that the driving component drives the first pressing portion 300 in the process of driving the first receiving portion 120 to approach the pressure measuring member 300 . 130 is close to the pressure measuring piece 300 , so that the first pressing surface 110 on the first pressing part 130 is close to the pressure measuring piece 300 , thereby facilitating the pressing of the pressure measuring piece 300 .

In one embodiment, at least one first groove 132 is defined on the side of the first pressing part 130 close to the second head 200 , and the opening of the first groove 132 faces the second Head 200. In this embodiment, since the first pressing portion 130 is used to press the pressure measuring member 300, during the pressing process, when the first pressing surface 110 of the first pressing portion 130 is completely Pressing on the pressure measuring piece 300 , that is, the first pressing surface 110 is pressed on the pressure measuring piece 300 in parallel, so that the first pressing part 130 is in contact with the pressure measuring piece 300 The pressure at the location is lower than the external atmospheric pressure, that is, the pressure between the first pressing portion 130 and the pressure measuring member 300 is lower than the atmospheric pressure, that is, the pressure between the first pressing portion 130 and the pressure measuring member 300 Too tight, so that when the first pressing part 130 is far from the second head 200, it is easy to cause part of the pressure measuring member 300 to stick to the first pressing part 130, thereby causing the pressure The measuring piece 300 is damaged. In order to reduce the probability of the above situation, the first groove 132 is arranged on the first pressing part 130, and the opening of the first groove 132 faces the second head 200, so that the There is a gap between the first pressing portion 130 and the pressure measuring member 300, which reduces the probability of excessive tightness between the first pressing portion 130 and the pressure measuring member 300, so that the first pressing When the pressure measuring part 130 is far away from the second sealing head 200 , it is convenient for the pressure measuring member 300 to be separated from the first pressing part 130 , which reduces the damage of the pressure measuring member 300 being torn by the first pressing part 130 . The probability of damage prolongs the service life of the first sealing head 100 and the pressure measuring member 300 .

In one embodiment, the first receiving portion 120 is provided with a connecting hole 122 , and the connecting hole 122 is used for placing a driving member to drive the first sealing head 100 to move. In this embodiment, the driving member is disposed in the connecting hole 122, and the driving member is in contact with the side wall of the connecting hole 122, so that the driving member drives the first The receiving part 120 moves, so that the first sealing head 100 moves. In this way, the driving rod drives the first sealing head 100 to move by being arranged in the connecting hole 122, so that the connection between the driving rod and the first sealing head 100 is detachable connection, so that So that when the first head 100 and the driving rod can be replaced, for example, when the first head 100 is damaged, the driving member is removed from the connecting hole 122, so as to facilitate Replace the first sealing head 100; for another example, when the driving member is damaged, the driving member is removed from the connecting hole 122, that is, the driving member and the first sealing head 100 separate, thereby facilitating the replacement of the drive.

In one embodiment, the first receiving portion 120 and the first pressing portion 130 are arranged perpendicular to each other. In this embodiment, the first receiving portion 120 is used for connecting with a driving member, and the driving member drives the first pressing portion 130 to move through the first receiving portion 120 , and the first receiving portion 120 is connected to the driving member. The relative positional relationship between the first pressing portions 130 determines the tightness of the pressing of the first pressing portion 130 to the pressure measuring member 300 during the moving process. The first receiving portion 120 and the first pressing portion 130 are arranged perpendicular to each other, that is, the first receiving portion 120 and the first pressing portion 130 are in a “T” shape. For example, the One end of the first pressing part 130 facing away from the second sealing head 200 is connected to one side of the first receiving part 120 , so that the end of the first pressing part 130 faces the second sealing head 200 , even if The end of the first pressing portion 130 faces the pressure measuring member 300, so that under the action of the same pressure, the pressing pressure of the first pressing portion 130 on the pressure measuring member 300 increases is larger, thereby improving the pressing tightness between the first pressing portion 130 and the pressure measuring member 300 , and facilitating the pressing of the first pressing portion 130 on the pressure measuring member 300 .

In one embodiment, the second sealing head 200 includes a second receiving portion 220 and a second pressing portion 230 , and the second receiving portion 220 and the second pressing portion 230 are away from the first sealing portion. One side of the head 100 is connected, and the side of the second pressing part 230 close to the first sealing head 100 is pressed on the pressure measuring member 300 . In this embodiment, the second receiving portion 220 is used to connect a driving component, that is, the driving component drives the second receiving portion 220 to move, for example, the driving component drives the second receiving portion 220 to approach the pressure measuring member 300 to move, for another example, the driving component drives the second receiving portion 220 to move away from the pressure measuring member 300 , so that the driving component drives the second pressing portion 230 to move through the second receiving portion 220 , so that all the The second pressing portion 230 moves close to or away from the pressure measuring member 300 . While the second pressing portion 230 is in the process of approaching the pressure measuring member 300 , the pressing surface on the second pressing portion 230 , that is, the second pressing surface 210 is disposed on the second pressing portion 230 away from the One side of the second receiving portion 220 is used for pressing the pressure measuring member 300 , so that the driving component drives the second pressing portion 300 during the process of driving the second receiving portion 220 to approach the pressure measuring member 300 . 230 is close to the pressure measuring piece 300 , so that the second pressing surface 210 on the second pressing part 230 is close to the pressure measuring piece 300 , thereby facilitating the pressing of the pressure measuring piece 300 .

In one embodiment, at least one second groove 232 is defined on the side of the second pressing portion 230 close to the first head 100 , and the opening of the second groove 232 faces the first Head 100. In this embodiment, since the second pressing portion 230 is used to press the pressure measuring member 300, during the pressing process, when the second pressing surface 210 of the second pressing portion 230 is completely Pressing on the pressure measuring piece 300 , that is, the second pressing surface 210 is pressed on the pressure measuring piece 300 in parallel, so that the second pressing part 230 is in contact with the pressure measuring piece 300 The pressure at the location is lower than the external atmospheric pressure, that is, the pressure between the second pressing portion 230 and the pressure measuring member 300 is lower than the atmospheric pressure, that is, the pressure between the second pressing portion 230 and the pressure measuring member 300 When the second pressing part 230 is too tight, so that the second pressing part 230 is far away from the first sealing head 100 , part of the pressure measuring member 300 is easily adhered to the second pressing part 230 , thereby causing the pressure The measuring piece 300 is damaged. In order to reduce the probability of the above situation, the second groove 232 is arranged on the second pressing part 230, and the opening of the second groove 232 faces the first sealing head 100, so that the There is a gap between the second pressing portion 230 and the pressure measuring member 300, which reduces the probability of excessive tightness between the second pressing portion 230 and the pressure measuring member 300, so that the second pressing When the pressure measuring part 230 is far away from the first sealing head 100 , it is convenient for the pressure measuring member 300 to be separated from the second pressing part 230 , which reduces the damage of the pressure measuring member 300 being torn by the second pressing part 230 . The probability of damage prolongs the service life of the second sealing head 200 and the pressure measuring element 300 .

In one of the embodiments, a heat sealing machine is provided, comprising an installation base and the head pressure detection device described in any one of the above embodiments, and the head pressure detection device is installed on the installation base. In this embodiment, the head pressure detection device is fixed on the installation base, and the brightness of the pressure line left after the head presses the pressure measurement piece is obtained through the acquisition module, and the pressure is measured in the form of brightness value. After conversion, the processing module converts the brightness value into a pressure value correspondingly again, so that the brightness on the pressure line corresponds to the pressure at each position of the head, so as to accurately obtain the pressure of the head during extrusion and the pressure distribution.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A seal head pressure detection method is characterized by comprising the following steps:

acquiring a pressure line image of the pressure measurement piece, wherein the pressure line image is an image formed by clamping the pressure measurement piece by a first seal head and a second seal head;

sequentially acquiring brightness values of a plurality of extrusion areas according to the pressure line image and along a direction parallel to the pressure line, wherein the pressure line image is formed by the images of the extrusion areas;

and correspondingly acquiring a pressure value according to the brightness value, and sending the pressure value to a detection system.

2. A head pressure detection method according to claim 1, wherein the acquiring of the pressure line image of the pressure measurement member comprises:

scanning the pressure measurement piece along a preset direction, and acquiring a color value distribution image of the pressure measurement piece;

and acquiring the pressure line image according to the color value distribution image.

3. A head pressure detection method according to claim 2, wherein the obtaining the pressure line image according to the color value distribution image comprises:

acquiring color values to be detected of a plurality of image areas according to the color value distribution image;

detecting whether the color value to be detected is matched with a preset color value or not;

when the color value to be detected is matched with the preset color value, acquiring a position parameter of an image area corresponding to the color value to be detected;

and forming the pressure line image according to the position parameters of the image area.

4. A seal head pressure detection method according to claim 3, wherein the detecting whether the color value to be detected is matched with a preset color value comprises:

detecting whether the color value to be detected is larger than the preset color value or not;

when the color value to be measured is matched with the preset color value, the position parameter of the image area corresponding to the color value to be measured is obtained, and the method comprises the following steps:

and when the color value to be detected is larger than the preset color value, acquiring the position parameter of the image area corresponding to the brightness value to be detected.

5. A head pressure detection method according to claim 1, wherein the acquiring of the pressure line image of the pressure measurement member further comprises:

driving the first seal head and the second seal head to move towards the pressure measuring part;

and driving the first sealing head and the second sealing head to respectively extrude two side surfaces of the pressure measuring piece within a preset time.

6. A seal head pressure detection method according to claim 5, characterized in that the preset time is 1-8 seconds.

7. A seal head pressure detection method according to claim 6, characterized in that the preset time is 5 seconds.

8. A head pressure detection method according to claim 1, wherein the obtaining of the pressure value according to the brightness value and the sending of the pressure value to a detection system further comprises:

detecting whether the brightness values of any two extrusion areas are equal or not;

and when the brightness values of any two extrusion areas are equal, sending a normal seal head signal to the detection system.

9. A head pressure detecting method according to claim 8, wherein the detecting whether the brightness values of any two of the pressing areas are equal further comprises:

and when the brightness values of any two extrusion areas are not equal, sending an end socket abnormal signal to the detection system.

10. A seal head pressure detection device is characterized by comprising a first seal head, a second seal head, a pressure measurement piece, an acquisition module and a processing module, wherein the first seal head and the second seal head are oppositely arranged, the pressure measurement piece is arranged between the first seal head and the second seal head and is used for acquiring a pressure line when the first seal head and the second seal head are extruded, the output end of the acquisition module is connected with the input end of the processing module, and the output end of the processing module is used for being connected with a detection system;

the acquisition module is used for acquiring a pressure line image of the pressure measurement piece, wherein the pressure line image is an image formed by clamping the pressure measurement piece by a first seal head and a second seal head; sequentially acquiring brightness values of a plurality of extrusion areas according to the pressure line image and along a direction parallel to the pressure line, wherein the pressure line image is formed by the images of the extrusion areas;

and the processing module is used for correspondingly acquiring a pressure value according to the brightness value and sending the pressure value to the detection system.

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