Vacuum adsorption device

Abstract

The invention relates to a vacuum adsorption device. The vacuum adsorption device comprises a pre-pressing head, two adjusting assemblies and two measuring pieces. A vacuum cavity is formed in the pre-pressing head, and a plurality of vacuum holes are formed in the inner wall of the same side of the vacuum cavity at intervals in the first direction; the vacuum holes penetrate and extend in the second direction intersecting with the first direction and are communicated between the vacuum cavity and the outside. The vacuum cavity forms two openings in the pre-pressing head; the first end of each adjusting assembly is arranged in the vacuum cavity in a penetrating mode through one of the two openings. The two measuring pieces and the two adjusting assemblies are arranged in parallel in a one-to-one correspondence mode, one end of each measuring piece is fixedly connected with the second end of the corresponding adjusting assembly, and the other end of each measuring piece is flush with the end face of the first end of the corresponding adjusting assembly. According to the vacuum adsorption device, the adjusting assembly is used for driving the measuring piece to move synchronously, so that the moving condition of the adjusting assembly is reflected in real time through the measuring piece, the size of a vacuum adsorption area is accurately controlled, and then accurate adsorption of products is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum adsorption devices, and in particular to a vacuum adsorption device. Background Art

[0002] At present, from the perspective of market development, the application of vacuum adsorption devices is becoming more and more extensive. Vacuum adsorption devices are not only widely used in various industrial production fields, but also widely used in various process packaging fields. With the continuous expansion of the application field of vacuum adsorption devices, the market demand is also constantly expanding.

[0003] In the structure of the existing vacuum adsorption device, it usually includes a pre-pressing head and an adjusting part. A vacuum cavity is provided in the pre-pressing head, and a plurality of vacuum holes arranged in an array and connected to the vacuum cavity are provided on the pre-pressing head. The vacuum holes connected to the vacuum cavity can generate negative pressure under the action of the vacuum cavity to adsorb the product. Therefore, all the vacuum holes connected to the vacuum cavity can be constructed together to form a vacuum adsorption area. The adjusting part is movably arranged in the vacuum cavity, and the adjusting part can realize the opening and closing of each vacuum hole and the vacuum cavity correspondingly, thereby realizing the size of the vacuum adsorption area. In this way, for products with various styles, the vacuum area of ​​the pre-pressing head can be adjusted in size according to the size of the product, which is flexible to use.

[0004] However, in the above structure, when the adjusting member moves in the vacuum chamber to adjust the opening and closing of each vacuum hole and the vacuum chamber, the user cannot clearly understand the specific situation of the movement of the adjusting member in the vacuum chamber, and cannot accurately control the opening and closing of the vacuum holes, and further cannot ensure that the size of the vacuum adsorption area accurately corresponds to the size of the product, which can easily lead to production errors and poor user experience. Summary of the invention

[0005] Based on this, it is necessary to provide a vacuum adsorption device to address the above problems.

[0006] A vacuum adsorption device, comprising:

[0007] A pre-pressing head, wherein a vacuum cavity is formed therein, and a plurality of vacuum holes are provided on the inner wall of the same side of the vacuum cavity at intervals along a first direction; each of the vacuum holes extends through along a second direction intersecting the first direction, and is connected between the vacuum cavity and the outside;

[0008] Two adjusting components, each of which has a first end and a second end arranged opposite to each other; the vacuum chamber passes through the pre-pressing head along a first direction, and two openings are formed on the pre-pressing head; the first end of each adjusting component is inserted into the vacuum chamber through one of the two openings, and is movably and sealingly matched with the inner wall of the vacuum chamber; and

[0009] Two measuring members, the two measuring members correspond to the two adjusting components one by one and are arranged in parallel, one end of each measuring member is fixedly connected to the second end of the corresponding adjusting component, and the other end of each measuring member is flush with the end surface of the first end of the corresponding adjusting component;

[0010] Wherein, when the adjusting component is connected in the vacuum chamber, the corresponding measuring member is located outside the pre-pressing head and can move relative to the pre-pressing head driven by the adjusting component.

[0011] In one of the embodiments, a avoidance groove extending along a first direction is formed on the outer side wall of the pre-pressing head, and the avoidance groove is offset from the vacuum chamber, and the two measuring members are movably arranged in the avoidance groove.

[0012] In one embodiment, the adjustment assembly includes an adjustment rod and a sealing portion, the first end of the adjustment rod is movably inserted into the vacuum chamber, and the first end of the adjustment rod is equipped with the sealing portion, the sealing portion is used to movably and sealingly engage with the inner wall of the vacuum chamber, and the second end of the adjustment rod extends out of the vacuum chamber and is used to be fixedly connected to the measuring piece.

[0013] In one embodiment, the adjustment component also includes an adjustment seat, and the two opposite ends of the pre-pressing head along the first direction are equipped with an adjustment seat, and the adjustment seat is provided with an adjustment hole penetrating along the first direction, and the adjustment hole is connected to the vacuum chamber, and the adjustment rod is movably inserted into the adjustment hole, and the outer peripheral side of the adjustment rod and the inner wall of the adjustment hole are provided with mutually matching threads.

[0014] In one embodiment, the adjustment assembly further includes an operating portion, the operating portion is coupled to the second end of the adjustment rod, and the measuring member is located on a side of the operating portion close to the first end and is fixedly connected to the second end of the adjustment rod.

[0015] In one embodiment, the adjustment assembly further includes a connecting member, which is located on a side of the operating portion close to the first end, and the connecting member is connected between the second end of the adjustment rod and the measuring member.

[0016] In one of the embodiments, a heating element is further included, and the heating element is matched with the pre-pressing head and adhered to a side surface of the pre-pressing head.

[0017] In one of the embodiments, a fixing member is further included, and the fixing member is arranged on the other side of the pre-pressing head, and the fixing member is matched with the heating element to jointly clamp the pre-pressing head.

[0018] In one of the embodiments, a mounting groove is formed in a depression on the outer side wall of the heating element, and the heating element is at least partially embedded in the mounting groove.

[0019] In one embodiment, a through communication channel is formed in the heating element, a communication port connected to the vacuum chamber is opened on the pre-pressing head, one end of the communication channel is connected to the communication port, and the other end of the communication channel is connected to the vacuum source.

[0020] The above-mentioned vacuum adsorption device includes a pre-pressing head, two adjustment components and two measuring parts. A vacuum cavity is formed in the pre-pressing head, and a plurality of vacuum holes are arranged on the inner wall of the same side of the vacuum cavity along the first direction; each vacuum hole extends through the second direction intersecting the first direction, and is connected between the vacuum cavity and the outside. Each adjustment component has a first end and a second end arranged oppositely; the vacuum cavity passes through the pre-pressing head along the first direction, and two openings are formed on the pre-pressing head; the first end of each adjustment component is passed through the vacuum cavity through one of the two openings, and is movably and sealedly matched with the inner wall of the vacuum cavity. The two measuring parts correspond to the two adjustment components one by one and are arranged in parallel, one end of each measuring part is fixedly connected to the second end of the corresponding adjustment component, and the other end of each measuring part is flush with the end face of the first end of the corresponding adjustment component. When the adjustment component is matched in the vacuum cavity, its corresponding measuring part is located outside the pre-pressing head and can move relative to the pre-pressing head under the drive of the adjustment component. The vacuum adsorption device connects the measuring part with the adjusting component and places the measuring part outside the pre-pressing head, so that the adjusting component can drive the measuring part to move synchronously. The measuring part can reflect the movement of the adjusting component in real time and accurately control the size of the vacuum adsorption area, thereby achieving precise adsorption of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the explosion structure of the vacuum adsorption device in this application.

[0022] Figure 2 It is a schematic diagram of the structure of the vacuum adsorption device in this application.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the vacuum adsorption device in this application at a first viewing angle.

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the vacuum adsorption device in this application at a second viewing angle.

[0025] Figure 5 It is a schematic diagram of the structure of the heating element in this application.

[0026] Figure 6 It is a structural schematic diagram of the pre-pressing head in this application.

[0027] Reference numerals

[0028] Vacuum adsorption device 100;

[0029] Pre-pressing head 10; vacuum chamber 101; vacuum hole 102; avoidance groove 103; communication port 104;

[0030] Adjustment assembly 11; adjustment rod 111; sealing portion 112; adjustment seat 113; adjustment hole 1131; operation portion 114; connection member 115;

[0031] Heat generating element 12; mounting groove 121; communication channel 122;

[0032] Fixing member 13; Measuring member 14; DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] At present, from the perspective of market development, the application of vacuum adsorption devices is becoming more and more extensive. Vacuum adsorption devices are not only widely used in various industrial production fields, but also widely used in various process packaging fields. With the continuous expansion of the application field of vacuum adsorption devices, the market demand is also constantly expanding.

[0040] In the structure of the existing vacuum adsorption device, it usually includes a pre-pressing head and an adjustment component. A vacuum cavity is provided in the pre-pressing head, and a plurality of vacuum holes arranged in an array and connected to the vacuum cavity are provided on the pre-pressing head. The vacuum holes connected to the vacuum cavity can generate negative pressure under the action of the vacuum cavity to adsorb the product. Therefore, all the vacuum holes connected to the vacuum cavity can be constructed together to form a vacuum adsorption area. The adjustment component is at least partially movably arranged in the vacuum cavity, and the adjustment component can realize the opening and closing of each vacuum hole and the vacuum cavity accordingly, thereby adjusting the size of the vacuum adsorption area. In this way, for products with various styles, the vacuum area of ​​the pre-pressing head can be adjusted in size according to the size of the product, which is flexible to use.

[0041] However, in the above structure, when the adjustment component moves in the vacuum chamber to adjust the opening and closing of each vacuum hole and the vacuum chamber, the user cannot clearly understand the specific situation of the movement of the adjustment component in the vacuum chamber, and cannot accurately control the opening and closing of the vacuum holes, and further cannot ensure that the size of the vacuum adsorption area accurately corresponds to the size of the product, which can easily lead to production errors and a poor user experience.

[0042] Based on the above considerations, in order to solve the above problems, a vacuum adsorption device 100 is provided in one or more embodiments of the present application. The measuring part 14 is matched with the adjusting component 11, and the measuring part 14 is placed outside the pre-pressing head 10, so that the adjusting component 11 can be used to drive the measuring part 14 to move synchronously, so that the movement of the adjusting component 11 can be reflected in real time through the measuring part 14, and the size of the vacuum adsorption area can be accurately controlled, thereby achieving precise adsorption of the product.

[0043] Specifically, see Figures 1 to 4 The vacuum adsorption device 100 includes a pre-pressing head 10 and two adjustment components 11. A vacuum cavity 101 is formed in the pre-pressing head 10, and a plurality of vacuum holes 102 are spaced apart along a first direction on the inner wall of the same side of the vacuum cavity 101; each vacuum hole 102 extends through along a second direction intersecting the first direction, and is connected between the vacuum cavity 101 and the outside. Each adjustment component 11 has a first end and a second end that are arranged oppositely; the vacuum cavity 101 passes through the pre-pressing head 10 along the first direction, and two openings are formed on the pre-pressing head 10; the first end of each adjustment component 11 is inserted into the vacuum cavity 101 through one of the two openings, and is movably and sealedly matched with the inner wall of the vacuum cavity 101.

[0044] It can be understood that, since the first ends of the two adjustment components 11 extending into the vacuum chamber 101 are movably and sealingly matched with the inner wall of the vacuum chamber 101, the two adjustment components 11 separate the vacuum chamber 101 into a vacuum area and a non-vacuum area.

[0045] The space between the ends of the first ends of the two adjusting components 11 is a vacuum area, and each vacuum hole 102 connected to the vacuum area can generate negative pressure under the action of the vacuum area to play a role in adsorbing products. The first ends of the two adjusting components 11 extend into the vacuum chamber 101 and occupy the part of the vacuum chamber 101 corresponding to the non-vacuum area, and each vacuum hole 102 connected to the non-vacuum area cannot generate negative pressure.

[0046] The present application can adjust the size of the interval between the ends of the first ends of the two adjustment components 11, that is, adjust the size of the vacuum area, by controlling the length of the first ends of the two adjustment components 11 extending into the vacuum chamber 101. The size of the vacuum area is positively correlated with the number of vacuum holes 102 present therein. Specifically, the larger the vacuum area, the more vacuum holes 102 connected to it in the vacuum area, and the larger the vacuum adsorption area formed by the vacuum holes 102. The smaller the vacuum area, the fewer vacuum holes 102 connected to it in the vacuum area, and the smaller the vacuum adsorption area formed by the vacuum holes 102. In this way, the user can control the movement of the two adjustment components 11 in the vacuum chamber 101 according to the size of the product to adjust the size of the vacuum adsorption area to match the size of the product, thereby achieving precise adsorption of the product.

[0047] For further information, see Figures 1 to 4 The vacuum adsorption device 100 further includes two measuring members 14, which correspond to the two adjustment components 11 one by one and are arranged in parallel. One end of each measuring member 14 is fixedly connected to the second end of the corresponding adjustment component 11, and the other end of each measuring member 14 is flush with the end surface of the first end of the corresponding adjustment component 11. When the adjustment component 11 is connected to the vacuum chamber 101, the corresponding measuring member 14 is located outside the pre-pressing head 10 and can move relative to the pre-pressing head 10 under the drive of the adjustment component 11.

[0048] For ease of understanding, in this application, the end of the measuring member 14 fixedly connected to the second end of the adjusting component 11 is defined as the third end, and the end of the measuring member 14 flush with the end surface of the first end of the adjusting component 11 is defined as the fourth end.

[0049] It is understandable that when the first end of the adjustment component 11 is controlled to move in the vacuum chamber 101, the adjustment component 11 will drive its corresponding measuring member 14 to move synchronously. Since the fourth ends of the two measuring members 14 are flush with the end surface of the first end of the adjustment component 11, the distance between the fourth ends of the two measuring members 14 is equal to the distance between the ends of the first ends of the two adjustment components 11. Here, the interval space between the fourth ends of the two measuring members 14 is defined as the replacement space, and the size of the replacement space is equal to the size of the vacuum area. In this way, the measuring member 14 reflects the movement of the adjustment component 11 in real time. The user can know the size of the vacuum area by observing the size of the replacement space, so that the size of the vacuum adsorption area can be accurately controlled, and the product can be precisely adsorbed.

[0050] In some embodiments, scale lines are provided on the measuring member 14 .

[0051] It is understandable that the user can observe the scale lines on the measuring piece 14 to more accurately know the length of the adjustment component 11 extending into the vacuum chamber 101, and then know the specific size of the vacuum area. In this way, the size of the vacuum adsorption area can be more accurately controlled to effectively improve the accuracy of product adsorption.

[0052] In some embodiments, see Figure 1 and Figure 6 A avoidance groove 103 extending along the first direction is formed on the outer wall of the pre-pressing head 10 , and the avoidance groove 103 is staggered with the vacuum chamber 101 , and two measuring members 14 are movably arranged in the avoidance groove 103 .

[0053] It is understandable that the avoidance groove 103 can protect the measuring member 14 to reduce the probability of the measuring member 14 being damaged by collision with external objects, thereby effectively improving the service life of the measuring member 14.

[0054] In some embodiments, see Figure 1 and Figure 2 The adjustment component 11 includes an adjustment rod 111 and a sealing portion 112. The first end of the adjustment rod 111 is movably arranged in the vacuum chamber 101, and the first end of the adjustment rod 111 is equipped with the sealing portion 112. The sealing portion 112 is used to be movably and sealingly equipped with the inner wall of the vacuum chamber 101. The second end of the adjustment rod 111 extends out of the vacuum chamber 101 and is used to be fixedly connected to the measuring member 14.

[0055] It is understandable that the second end of the adjusting rod 111 extending out of the vacuum chamber 101 can be easily held and operated by the user to push the adjusting rod 111 to move in the vacuum chamber 101. When the adjusting assembly 11 is matched with the pre-pressing head 10, since the sealing portion 112 is sealed and matched with the inner wall of the vacuum chamber 101, the interval space between the sealing portions 112 of the two adjusting assemblies 11 is the vacuum area; the first ends of the adjusting rods 111 of the two adjusting assemblies 11 and the sealing portions 112 occupying the parts of the vacuum chamber 101 correspond to the non-vacuum area.

[0056] During the specific operation of the vacuum adsorption device 100, the user operates the second end of the adjusting rod 111 to control the movement of the first end of the adjusting rod 111 and the sealing portion 112 in the vacuum chamber 101, thereby adjusting the size of the vacuum area and controlling the number of vacuum holes 102 connected to the vacuum area, and then adjusting the size of the vacuum adsorption area to match the size of the product, thereby achieving precise adsorption of the product.

[0057] In some embodiments, see Figure 1 and Figure 3 The adjustment component 11 also includes an adjustment seat 113. The two opposite ends of the pre-pressing head 10 along the first direction are equipped with an adjustment seat 113. The adjustment seat 113 is provided with an adjustment hole 1131 penetrating along the first direction. The adjustment hole 1131 is connected to the vacuum chamber 101. The adjustment rod 111 is movably inserted into the adjustment hole 1131, and the outer peripheral side of the adjustment rod 111 and the inner wall of the adjustment hole 1131 are provided with mutually matching threads.

[0058] It is understandable that the adjusting rod 111 is threadedly connected to the adjusting seat 113 , and the adjusting seat 113 is matched with the pre-pressing head 10 , so that the stability of the assembly of the adjusting component 11 and the pre-pressing head 10 can be improved.

[0059] During the specific operation of the vacuum adsorption device 100, the user operates the second end of the adjusting rod 111 to control the rotation of the adjusting rod 111 relative to the adjusting seat 113, thereby controlling the length of the first end of the adjusting rod 111 extending into the vacuum chamber 101, so as to adjust the size of the vacuum area and control the number of vacuum holes 102 connected to the vacuum area, thereby adjusting the size of the vacuum adsorption area to match the size of the product, thereby achieving precise adsorption of the product.

[0060] In some embodiments, see Figure 1 and Figure 2 The adjustment assembly 11 also includes an operating portion 114 , which is connected to the second end of the adjustment rod 111 . The measuring member 14 is located on a side of the operating portion 114 close to the first end and is fixedly connected to the second end of the adjustment rod 111 .

[0061] It is understandable that the operating portion 114 can facilitate the user to hold the adjusting rod 111, which is beneficial to improving operating efficiency.

[0062] In some embodiments, see Figure 1 and Figure 3 The adjustment component 11 further includes a connecting member 115 , which is located on a side of the operating portion 114 close to the first end, and is connected between the second end of the adjustment rod 111 and the measuring member 14 .

[0063] In some embodiments, see Figure 1 and Figure 2 The vacuum adsorption device 100 further includes a heating element 12 , which is matched with the pre-pressing head 10 and adheres to a side surface of the pre-pressing head 10 .

[0064] It is understandable that the heating element 12 is arranged in contact with the surface of the pre-pressing head 10, which can better achieve heat transfer to reduce energy loss. During the specific operation of the vacuum adsorption device 100, the heating element 12 can generate heat and heat the pre-pressing head 10, so that the pre-pressing head 10 can better press the product after adsorbing the product.

[0065] In some embodiments, see Figure 1 and Figure 2 The vacuum adsorption device 100 further includes a fixing member 13 , which is disposed on the other side of the pre-pressing head 10 , and the fixing member 13 is matched with the heating element 12 to clamp the pre-pressing head 10 together.

[0066] In some embodiments, see Figure 1 and Figure 3 A mounting groove 121 is formed on the outer wall of the heating element 12 , and the heating element 12 is at least partially embedded in the mounting groove 121 .

[0067] It is understandable that the avoidance groove 103 can protect the pre-pressing head 10, so as to reduce the probability of the pre-pressing head 10 being damaged by collision with external objects, thereby effectively improving the service life of the pre-pressing head 10. At the same time, by the groove wall of the avoidance groove 103 being fitted with the pre-pressing head 10, the contact area between the heating element 12 and the pre-pressing head 10 can be increased, thereby improving the heating effect of the heating element 12 on the pre-pressing head 10.

[0068] In some embodiments, see Figure 1 and Figure 4 A connecting channel 122 is formed in the heating element 12, and a connecting port 104 connected to the vacuum chamber 101 is opened on the pre-pressing head 10. One end of the connecting channel 122 is connected to the connecting port 104, and the other end of the connecting channel 122 is connected to the vacuum source.

[0069] It is understandable that when the heating element 12 is assembled with the pre-pressing head 10, the communication channel 122, the vacuum chamber 101 and the vacuum hole 102 are interconnected. Thus, during the specific operation of the vacuum adsorption device 100, the vacuum source realizes vacuum operation on the vacuum chamber 101 and the vacuum hole 102 through the communication channel 122, thereby generating negative pressure in the vacuum hole 102 to achieve adsorption of the product.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A vacuum adsorption device, characterized in that: include: A pre-pressing head, wherein a vacuum cavity is formed therein, and a plurality of vacuum holes are provided on the inner wall of the same side of the vacuum cavity at intervals along a first direction; each of the vacuum holes extends through along a second direction intersecting the first direction, and is connected between the vacuum cavity and the outside; Two adjusting components, each of which has a first end and a second end arranged opposite to each other; the vacuum chamber passes through the pre-pressing head along a first direction, and two openings are formed on the pre-pressing head; the first end of each adjusting component is inserted into the vacuum chamber through one of the two openings, and is movably and sealingly matched with the inner wall of the vacuum chamber; as well as Two measuring members, the two measuring members correspond to the two adjusting components one by one and are arranged in parallel, one end of each measuring member is fixedly connected to the second end of the corresponding adjusting component, and the other end of each measuring member is flush with the end surface of the first end of the corresponding adjusting component; Wherein, when the adjusting component is connected in the vacuum chamber, the corresponding measuring member is located outside the pre-pressing head and can move relative to the pre-pressing head driven by the adjusting component.

2. The vacuum adsorption device according to claim 1, characterized in that: The outer side wall of the pre-pressing head is recessed to form a avoiding groove extending along the first direction, and the avoiding groove is staggered with the vacuum chamber, and the two measuring members are movably arranged in the avoiding groove.

3. The vacuum adsorption device according to claim 1, characterized in that: The adjustment assembly includes an adjustment rod and a sealing portion. The first end of the adjustment rod is movably inserted into the vacuum chamber, and the first end of the adjustment rod is equipped with the sealing portion. The sealing portion is used to be movably and sealingly equipped with the inner wall of the vacuum chamber. The second end of the adjustment rod extends out of the vacuum chamber and is used to be fixedly connected to the measuring piece.

4. The vacuum adsorption device according to claim 3, characterized in that: The adjustment assembly also includes an adjustment seat, and the two opposite ends of the pre-pressing head along the first direction are equipped with an adjustment seat. The adjustment seat is provided with an adjustment hole that penetrates along the first direction, and the adjustment hole is connected to the vacuum chamber. The adjustment rod is movably inserted into the adjustment hole, and the outer peripheral side of the adjustment rod and the inner wall of the adjustment hole are provided with mutually matching threads.

5. The vacuum adsorption device according to claim 3, characterized in that: The adjustment component also includes an operating part, which is matched with the second end of the adjustment rod. The measuring member is located on a side of the operating part close to the first end and is fixedly connected to the second end of the adjustment rod.

6. The vacuum adsorption device according to claim 5, characterized in that: The adjustment assembly also includes a connecting member, which is located on a side of the operating portion close to the first end, and is connected between the second end of the adjustment rod and the measuring member.

7. The vacuum adsorption device according to claim 1, characterized in that: It also includes a heating element, which is matched with the pre-pressing head and adheres to one side surface of the pre-pressing head.

8. The vacuum adsorption device according to claim 7, characterized in that: It also includes a fixing member, which is arranged on the other side of the pre-pressing head, and the fixing member is matched with the heating element to jointly clamp the pre-pressing head.

9. The vacuum adsorption device according to claim 7, characterized in that: An installation groove is formed on the outer side wall of the heating element, and the heating element is at least partially embedded in the installation groove.

10. The vacuum adsorption device according to claim 7, characterized in that: A through communication channel is formed in the heating element, a communication port connected to the vacuum chamber is formed on the pre-pressing head, one end of the communication channel is connected to the communication port, and the other end of the communication channel is connected to the vacuum source.

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