Screen structure and assembly equipment thereof

Abstract

The invention relates to the technical field of screen meshes, and discloses a screen mesh structure and assembling equipment thereof.The screen mesh structure comprises an annular screen mesh frame, a pressing piece and at least two layers of screen meshes, the annular screen mesh frame is provided with a mounting end and a supporting end which are oppositely arranged, and a through hole penetrating through the mounting end and the supporting end is formed in the annular screen mesh frame; the at least two layers of screens are sequentially overlapped in the axial direction of the through hole, the screens are arranged on the end face of the mounting end and cover the through hole, and the screen located on the lower layer is bonded to the end face of the mounting end; and all the screens are pressed on the annular screen frame by the pressing piece. According to the screen structure, the multiple layers of screens are fixed in a bonding and pressing mode, the situation that the multiple layers of screens are bonded into a whole through extra adhesives and then bonded with the annular screen frame is not needed, and therefore when a certain layer of screen is damaged, only one layer of screen needs to be replaced, overall replacement is not needed, and the cost is reduced. The maintenance cost of the screen is reduced, and the replacement efficiency of the screen is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screen meshes, and in particular to a screen mesh structure and an assembly device thereof. Background Art

[0002] The so-called screen is different from general mesh products. It is a mesh product that has a strict series of mesh sizes and has the function of grading and screening object particles. It is approved by the industry, organization, and standards. It is used for grading, filtering, and screening of powders and granules to ensure product quality and hygiene standards. In the current screen structure, during the assembly production process, the screen is usually tightened first, and then the screen frame is bonded to the tightened screen. However, for the two-layer screen structure, since the two layers of screen are first bonded with an adhesive, and then the two layers of screen are bonded to the screen frame, when one layer of the screen is damaged, the two layers of screen can only be replaced as a whole, which will undoubtedly increase the production cost and maintenance cost of the screen. Summary of the invention

[0003] The purpose of the present invention is to provide a screen structure, aiming to solve the problem that the current screen needs to be replaced as a whole when it is damaged, resulting in high maintenance costs and low replacement efficiency.

[0004] In the first aspect, the present application provides a screen structure, comprising an annular screen frame, a clamping member and at least two layers of screens, the annular screen frame having a mounting end and a supporting end arranged oppositely, the annular screen frame being provided with a through hole penetrating the mounting end and the supporting end, at least two layers of the screens being stacked in sequence along the axial direction of the through hole, the screens being arranged on the end surface of the mounting end and covering the through hole, the screens located on the lower layer being bonded to the end surface of the mounting end; the clamping member clamps all the screens onto the annular screen frame.

[0005] In one embodiment, the outer periphery of the support end extends radially outward to form a connecting portion; the clamping member includes a clamping ring and a connecting ring arranged on the outer periphery of the clamping ring;

[0006] The diameter of the central hole of the clamping ring is greater than or equal to the diameter of the through hole;

[0007] The clamping ring is clamped on the mounting end, and the connecting ring is connected to the connecting portion via a fastener.

[0008] In a second aspect, the present application further provides an assembly device for the screen structure, comprising:

[0009] A support, on which a fixing seat for pressing the annular screen frame is provided;

[0010] A first tensioning mechanism, which is arranged on the support along a first direction and is used to adjust the tension of the screen at the lower layer;

[0011] A second tensioning mechanism is provided on the support along a second direction and is used to adjust the tension of the upper screen;

[0012] A pressing mechanism, which is disposed above the fixing seat and can reciprocate along a third direction to approach or move away from the fixing seat, and is used to press the pressing member to fix the screen located at the lower layer with the screen located at the upper layer;

[0013] The first direction, the second direction and the third direction are perpendicular to each other.

[0014] In one embodiment, the first tensioning mechanism comprises:

[0015] A first clamp, which is provided on the support and located outside the fixing seat, and is used to clamp one end of the lower screen;

[0016] A second clamp, which is slidably disposed on the support and is located on the opposite side of the first clamp, and is used to clamp the other end of the lower screen;

[0017] A driving component is arranged on the support, and an output end of the driving component is connected to the second clamp, and is used to drive the second clamp to approach or move away from the first clamp to achieve tension adjustment of the lower layer of the screen.

[0018] In one embodiment, the first tensioning mechanism further includes:

[0019] a first tensioning roller, which spans across the support along the second direction and is located between the second clamp and the fixed seat;

[0020] A second tensioning roller spans over the support along the second direction and is located between the first tensioning roller and the fixed seat. The second tensioning roller is located above the first tensioning roller, and a space for clamping the lower layer of the screen is formed between the first tensioning roller and the second tensioning roller.

[0021] In one embodiment, the first tensioning mechanism further includes a tension detection component, and the tension detection component includes:

[0022] A mounting base, which is fixed on the support;

[0023] A tension meter is mounted on the mounting seat, the top of the tension meter is connected to a support block, and the end of the first tensioning roller is connected to the support block.

[0024] In one embodiment, the driving assembly includes a tensioning cylinder, a pressure regulating valve and a connecting rod. The tensioning cylinder is fixed on the support and is located on the outside of the second clamp. The piston rod of the tensioning cylinder is connected to the end of the connecting rod away from the second clamp, and the end of the connecting rod close to the second clamp is connected to the second clamp. The pressure regulating valve is used to adjust the amount of air source entering the tensioning cylinder to control the movement of the piston rod of the tensioning cylinder.

[0025] In one embodiment, the driving assembly further includes a connecting head and a connecting block, wherein one end of the connecting head close to the tensioning cylinder is connected to the piston rod of the tensioning cylinder, and an end of the connecting head away from the tensioning cylinder is provided with a mounting position, one end of the connecting block close to the connecting head extends into the mounting position and is connected to the connecting head, and the end of the connecting block away from the connecting head is connected to the connecting rod.

[0026] In one embodiment, the first clamp and the second clamp both include a clamp seat and a clamp plate, the clamp seat is disposed on the support, and the clamp plate is detachably connected to the top surface of the clamp seat for clamping the lower layer of the screen.

[0027] In one embodiment, it also includes a plurality of lock buckles and locking blocks. The outer surface of the clamp seat is provided with a plurality of lock buckles, and the outer surface of the clamp plate is provided with a plurality of locking blocks corresponding to the lock buckles one by one. The locking blocks are used to cooperate with the lock buckles so that the clamp plate can be detachably connected to the clamp seat.

[0028] In one embodiment, the second tensioning mechanism has the same structure as the first tensioning mechanism.

[0029] In one embodiment, the second tensioning mechanism has the same structure as the first tensioning mechanism.

[0030] In one embodiment, the clamping mechanism includes a clamping cylinder, a fixed frame, a clamping frame and a plurality of vertically arranged sliding rods, wherein the plurality of sliding rods are spaced apart on the periphery of the fixed seat, the clamping frame is disposed above the fixed seat and is slidably connected to the sliding rods, the fixed frame is installed on the top of the sliding rods and is located above the clamping frame, the clamping cylinder is fixed on the fixed frame, and the piston rod of the clamping cylinder is connected to the clamping frame for driving the clamping frame to reciprocate along the third direction to approach or move away from the fixed seat.

[0031] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0032] (1) The screen structure of the present application cleverly uses bonding and crimping to fix the multiple layers of screens. There is no need to use additional adhesives to bond the multiple layers of screens into a whole and then bond them to the annular screen frame. As a result, when a layer of the screen is damaged, only one layer of the screen needs to be replaced, without the need to replace the entire layer. This helps reduce the maintenance cost of the screen and improves the efficiency of screen replacement.

[0033] (2) The first tensioning mechanism and the second tensioning mechanism are respectively arranged on the support along the first direction and the second direction, and then the tension of the lower screen is adjusted to a taut state by the first tensioning mechanism, and the screen frame and the lower screen are bonded together by an adhesive, and then the tension of the upper screen is adjusted to a taut state by the second tensioning mechanism, and finally the pressing member is pressed downward onto the screen frame by the pressing mechanism, so that the upper screen is pressed and fixed to the lower screen. The assembly equipment has a simple structure and is easy to operate. The first tensioning mechanism and the second tensioning mechanism are respectively used to adjust the tension of the lower screen and the upper screen, thereby ensuring the uniformity of the tension of the screen. There is no need to manually tighten the screen, which reduces the labor intensity and also ensures the production quality of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] In the attached figure:

[0037] Figure 1 is a schematic diagram of a screen structure in Example 1 of the present application;

[0038] Figure 2 is a schematic top view of an assembly device in Example 2 of the present application;

[0039] Figure 3 It is a structural schematic diagram of an assembly device in Example 2 of the present application;

[0040] Figure 4 It is a schematic diagram of the connection structure between a driving component and a first clamp in an assembly device in Example 2 of the present application;

[0041] Figure 5 It is a cross-sectional schematic diagram of an assembly device in Example 2 of the present application.

[0042] Figure Number:

[0043] 10. Screen structure; 11. Ring screen frame; 11a. Mounting end; 11b. Support end; 12. Pressing member; 121. Pressing ring; 122. Connecting ring; 13. Connecting part; 14. Fastener; 141. Bolt; 142. Nut; 15. Lower screen; 16. Upper screen;

[0044] 20. Assembly equipment; 21. Support; 22. First tensioning mechanism; 221. First clamp; 222. Second clamp; 223. Drive assembly; 2231. Tensioning cylinder; 2232. Connecting rod; 2233. Connecting head; 2234. Connecting block; 2235. Pressure regulating valve; 23. Second tensioning mechanism; 24. Pressing mechanism; 241. Pressing cylinder; 242. Sliding rod; 243. Fixed frame; 244. Pressing frame; 25. First tensioning roller; 26. Second tensioning roller; 27. Tension detection assembly; 271. Mounting seat; 272. Tension meter; 273. Support block; 28. Lock; 29. ​​Lock block; 210. Fixed seat. DETAILED DESCRIPTION

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0046] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0048] Example 1

[0049] Please refer to Figure 1 The present application provides a screen structure 10, which includes an annular screen frame 11, a clamping member 12 and at least two layers of screens. The annular screen frame 11 has an installation end 11a and a support end 11b that are relatively arranged. The annular screen frame 11 is provided with a through hole that passes through the installation end 11a and the support end 11b. At least two layers of screens are stacked in sequence along the axial direction of the through hole. The screens are arranged on the end surface of the installation end 11a and cover the through hole. The screen 15 located at the lower layer is bonded to the end surface of the installation end 11a; the clamping member 12 presses all the screens onto the annular screen frame 11.

[0050] The screen structure 10 of the present application is achieved by bonding the screen 15 located at the lower layer to the end surface of the mounting end 11a of the annular screen frame 11, and then superimposing the upper screen on the lower screen, and using the pressing member 12 to press all the screens, and then pressing all the screens to be fixed on the annular screen frame 11. This screen structure 10 cleverly uses bonding and pressing to fix the multi-layer screens, and there is no need to use an additional adhesive to bond the multi-layer screens to form a whole, and then bond them to the annular screen frame 11, so that when a layer of the screen is damaged, only one layer of the screen needs to be replaced, and there is no need to replace the entire layer, which is conducive to reducing the maintenance cost of the screen and improving the replacement efficiency of the screen.

[0051] Exemplarily, the "at least two layers of screens" mentioned above refer to two or more layers of screens, which can be determined according to actual conditions. For example: the screen structure 10 in this embodiment uses two layers of screens, the screen 15 located at the lower layer is the bottom layer screen, and the other layer of screen is the surface layer screen, the bottom layer screen is bonded to the end surface of the mounting end 11a of the annular screen frame 11, the surface layer screen is superimposed on the bottom layer screen, and is compressed by the compression member 12, so that the surface layer screen is compressed with the bottom layer screen.

[0052] In addition, the method of bonding the screen 15 (i.e., the bottom screen) located at the lower layer to the end surface of the mounting end 11a of the annular screen frame 11 can be done manually or by automated equipment, and there is no limitation on this. For ease of understanding, the following description is based on the method of manual bonding, that is, the tension of the lower screen is adjusted to a taut state, and then the adhesive in a tubular package is squeezed out to the middle position where the lower screen 15 contacts the annular screen frame 11, and the adhesive is scraped flat with a scraper adhesive until the adhesive solidifies, and then the lower screen 15 is bonded and fixed to the annular screen frame 11.

[0053] In one embodiment, the outer periphery of the support end 11b extends radially outward to form a connecting portion 13; the clamping member 12 includes a clamping ring 121 and a connecting ring 122 arranged on the outer periphery of the clamping ring 121, the clamping ring 121 is clamped on the mounting end 11a, and the connecting ring 122 is connected to the connecting portion 13 via a fastener 14. That is to say, after the upper screen 16 is superimposed on the lower screen 15, the pressing piece 12 is placed on the mounting end 11a of the annular screen frame 11, and the pressing piece 12 is pressed downward so that the pressing ring 121 of the pressing piece 12 is pressed against the mounting end 11a, and the connecting ring 122 is connected to the connecting part 13 through the fastener 14. At this time, the upper screen 16 is pressed and fixed to the lower screen 15. When a layer of the screen needs to be replaced, it is only necessary to loosen the locking piece and lift the pressing piece 12 upward so that the pressing ring 121 is disengaged from the mounting end 11a and the connecting ring 122 is disengaged from the connecting part 13. The screen can be quickly replaced, thereby improving the efficiency of screen replacement. At the same time, there is no need to replace the screen as a whole, which is beneficial to reducing the maintenance cost of the screen.

[0054] In addition, the diameter of the central hole of the clamping ring 121 is greater than or equal to the diameter of the through hole. In this way, the space occupied by the clamping ring 121 can be reduced, ensuring that the area of ​​the screen can be used is larger.

[0055] Specifically, the fastener 14 includes a bolt 141 and a nut 142. The bolt 141 is fixed on the connecting portion 13. The connecting ring 122 is provided with a threaded hole at a position relative to the bolt 141. When the pressing member 12 is pressed downward, the bolt 141 passes through the threaded hole, and then the nut 142 is used to lock the portion of the bolt 141 passing through the threaded hole, so that the pressing member 12 and the annular screen frame 11 can be detachably connected. The above-mentioned connection method has a simpler structure and is conducive to the rapid replacement of the screen.

[0056] Example 2

[0057] Please refer to Figure 2 and Figure 3 The present application also provides an assembly device 20 for assembling the screen structure 10 of Example 1, and the assembly device 20 includes a support 21, a first tensioning mechanism 22, a second tensioning mechanism 23 and a pressing mechanism 24.

[0058] Specifically, the support 21 is provided with a fixing seat 210 for fixing the annular screen frame 11, a first tensioning mechanism 22 is provided on the support 21 along a first direction, and is used to adjust the tension of the lower screen 15; a second tensioning mechanism 23 is provided on the support 21 along a second direction, and is used to adjust the tension of the upper screen 16; a pressing mechanism 24 is provided above the fixing seat 210, and can reciprocate along a third direction to approach or move away from the fixing seat 210, and is used to press the pressing member 12, so that the upper screen 16 is fixed to the lower screen 15. Among them, the first direction, the second direction and the third direction are perpendicular to each other.

[0059] The present application arranges a first tensioning mechanism 22 and a second tensioning mechanism 23 on a support 21 along a first direction and a second direction respectively, uses the first tensioning mechanism 22 to adjust the tension of the lower screen 15 to a taut state, and uses an adhesive to bond the screen frame and the lower screen 15 together, and then uses the second tensioning mechanism 23 to adjust the tension of the upper screen 16 to a taut state, and finally uses the clamping mechanism 24 to press the clamping ring 121 of the upper screen 16 downward onto the annular screen frame 11, so that the upper screen 16 is compressed and fixed to the lower screen 15, and there is no need to use additional adhesive to bond the upper screen 16 and the lower screen 15 to form a whole, so that when a layer of the screen is damaged, only one layer of the screen needs to be replaced, and there is no need to replace the entire layer, which is beneficial to reducing the maintenance cost of the screen. The assembly equipment 20 has a simple structure and is easy to operate. The first tensioning mechanism 22 and the second tensioning mechanism 23 are respectively used to adjust the tension of the lower screen 15 and the upper screen 16, thereby ensuring the uniformity of the screen tensioning. There is no need to manually tighten the screen, which reduces labor intensity and also ensures the production quality of the screen.

[0060] Here, it should be noted that the “first direction”, “second direction” and “third direction” mentioned above are fictitious for the purpose of describing the positional relationship between the first tensioning mechanism 22, the second tensioning mechanism 23 and the pressing mechanism 24 on the support 21. Figure 2 and Figure 3 The “first direction” may specifically refer to the X direction, the “second direction” may specifically refer to the Y direction, and the “third direction” may specifically refer to the Z direction.

[0061] Illustratively, the upper screen 16 in this embodiment is fixedly connected to the lower screen 15 by means of compression by a clamping ring 121, without the need for additional bonding with an adhesive, that is: when the tension of the upper screen 16 is adjusted to an appropriate value under the action of the second tensioning mechanism 23, the clamping ring 121 is placed on the top of the screen frame, and then the clamping mechanism 24 is moved close to the fixed seat 210 along the third direction so that the clamping ring 121 is clamped by the clamping mechanism 24. At this time, the upper screen 16 is clamped by the clamping piece 12 and fixed on the annular screen frame 11. Finally, the clamping ring 121 only needs to be fixed to the annular screen frame 11 using the fastener 14 (such as a bolt 141 and a nut 142). That is to say, the clamping mechanism 24 in this embodiment is used to clamp the clamping member 12 so that the upper screen 16 is clamped and fixed on the screen fixing frame 243. In this regard, the clamping mechanism 24 can adopt the specific structure in the following embodiments, or can adopt a mechanism that can clamp the clamping ring 121, and there is no limitation on this.

[0062] Exemplarily, the first tensioning mechanism 22 is used to adjust the tension of the lower screen 15 so that the lower screen 15 is kept in a taut state when it is bonded to the screen frame, and then an adhesive is applied to the contact position between the screen frame and the lower screen 15, so that the lower screen 15 is bonded to the screen frame, without manually tightening the lower screen 15, which can effectively prevent the quality of the screen from being affected by the poor control of the stretching degree of the lower screen 15. For example, if the tension of the lower screen 15 is too large, it may cause damage to the lower screen 15; if the tension of the lower screen 15 is too small, it will affect the quality of the screen. In addition, it should be noted that the first tensioning mechanism 22 can adopt the specific structure of the following embodiments, or can adopt a tensioning mechanism that can adjust the lower screen 15 to the desired tension state, without limitation.

[0063] Exemplarily, the second tensioning mechanism 23 is used to adjust the tension of the upper screen 16 so that the upper screen 16 and the lower screen 15 remain in a taut state when fixed together, ensuring that the tension of the upper screen 16 and the lower screen 15 are consistent, avoiding the screening quality of the screen being affected due to different tensions of the two.

[0064] In this embodiment, in order to reduce the manufacturing cost of the assembly device 20, the structure of the second tensioning mechanism 23 is the same as that of the first tensioning mechanism 22, and the only difference is that they are arranged on the support 21 in different ways, wherein the first tensioning mechanism 22 is arranged on the support 21 along a first direction, and the second tensioning mechanism 23 is arranged on the support 21 along a second direction, and the first direction is perpendicular to the second direction. In the following embodiments, the specific structure of the first tensioning mechanism 22 is used for description, and the specific structure of the second tensioning mechanism 23 can refer to the first tensioning mechanism 22, and no further description is given.

[0065] Please continue to refer to Figure 3 Specifically, the first tensioning mechanism 22 includes a first clamp 221, a second clamp 222 and a driving assembly 223. The first clamp 221 is arranged on the support 21 and is located on the outside of the fixed seat 210, and is used to clamp one end of the lower screen 15; the second clamp 222 is slidably arranged on the support 21 and is located on the opposite side of the first clamp 221, and is used to clamp the other end of the lower screen 15; the driving assembly 223 is arranged on the support 21, and the output end of the driving assembly 223 is connected to the second clamp 222, and is used to drive the second clamp 222 to approach or move away from the first clamp 221, so as to adjust the tension of the lower screen 15.

[0066] Exemplarily, since the two ends of the lower screen 15 are clamped by the first clamp 221 and the second clamp 222 respectively, and the first clamp 221 and the second clamp 222 are arranged on both sides of the fixed seat 210, when the second clamp 222 is driven to slide on the support 21, the tension of the lower screen 15 can be adjusted, that is, the driving component 223 is used to provide driving force to the second clamp 222, so that the second clamp 222 can be driven to slide on the support 21 to approach or move away from the first clamp 221. In this regard, the driving component 223 in this embodiment can adopt the specific structure in the following embodiments, or can adopt a power component that can drive the second clamp 222 to slide on the support 21, which is not limited.

[0067] The second clamp 222 is then driven by the driving assembly 223 to slide in a direction away from the first clamp 221 so that the lower screen 15 is pulled and is in a taut state. At this time, the lower screen 15 contacts the top surface of the annular screen frame 11, and then an adhesive is applied to the contact position between the two so that the lower screen 15 is bonded to the annular screen frame 11. After the adhesive is cured, the driving assembly 223 is used to drive the second clamp 222 to slide in a direction close to the first clamp 221 so that the portion of the lower screen 15 that is not bonded to the annular screen frame 11 is in a relaxed state, and the excess lower screen 15 is removed, thereby completing the bonding of the lower screen 15. The structure is simple and the operation is convenient. There is no need for manual tightening, which is conducive to ensuring the production quality of the screen.

[0068] Please continue to refer to Figure 3 In other embodiments, the first tensioning mechanism 22 also includes a first tensioning roller 25 and a second tensioning roller 26. The first tensioning roller 25 spans over the support 21 along the second direction and is located between the second clamp 222 and the fixed seat 210; the second tensioning roller 26 spans over the support 21 along the second direction and is located between the first tensioning roller 25 and the fixed seat 210 in the first direction. The second tensioning roller 26 is located above the first tensioning roller 25, and a space for clamping the lower layer of the screen 15 is formed between the first tensioning roller 25 and the second tensioning roller 26.

[0069] Exemplarily, by sequentially arranging a first tensioning roller 25 and a second tensioning roller 26 on the support 21, the lower layer of the screen 15 is tensioned to bypass the first tensioning roller 25 and the second tensioning roller 26, and then when the driving component 223 drives the second clamping slide to adjust the tension of the lower layer of the screen 15, a space for clamping the lower layer of the screen 15 is formed between the first tensioning roller 25 and the second tensioning roller 26, so that the lower layer of the screen 15 always keeps in contact with the top surface of the annular screen frame 11, ensuring that the lower layer of the screen 15 is subsequently bonded to the annular screen frame 11 using an adhesive.

[0070] Please refer to Figure 3In other embodiments, the first tensioning mechanism 22 also includes a tension detection assembly 27, the tension detection assembly 27 includes a mounting seat 271 and a tension meter 272, the mounting seat 271 is fixed to the support 21; the tension meter 272 is installed on the mounting seat 271, the top of the tension meter 272 is connected to a support block 273, and the end of the first tensioning roller 25 is connected to the support block 273. That is to say, by fixing the mounting base 271 on the support 21, and installing the tension meter 272 on the mounting base 271, and the top of the tension meter 272 is connected to the support block 273, and then the end of the first tension roller is connected to the support block 273, since the lower layer of the screen 15 always squeezes the first tensioning roller 25, when the tension of the lower layer of the screen 15 is adjusted, the pressure of the lower layer of the screen 15 acting on the first tensioning roller 25 will be transmitted to the tension meter 272 through the support block 273, so as to be detected by the tension meter 272, transmitted to the control device, and displayed on the control device, so that the tension of the lower layer of the screen 15 can be monitored in real time, which is beneficial to ensure the production quality of the screen.

[0071] Please refer to Figure 3 and Figure 4 In other embodiments, the driving assembly 223 includes a tensioning cylinder 2231, a pressure regulating valve 2235 and a connecting rod 2232. The tensioning cylinder 2231 is fixed on the support 21 and is located on the outside of the second clamp 222. The piston rod of the tensioning cylinder 2231 is connected to the end of the connecting rod 2232 away from the second clamp 222, and the end of the connecting rod 2232 close to the second clamp 222 is connected to the second clamp 222. The pressure regulating valve 2235 is used to adjust the amount of air source introduced into the tensioning cylinder 2231 to control the movement of the piston rod of the tensioning cylinder 2231.

[0072] Illustratively, when it is necessary to adjust the tension of the lower layer of the screen 15, the pressure regulating valve 2235 is used to adjust the amount of gas entering the tensioning cylinder 2231 to drive the extension and retraction of the piston rod of the tensioning cylinder 2231, thereby pushing the second clamp 222 closer to or away from the first clamp 221, thereby achieving automatic adjustment of the tension of the lower layer of the screen 15 without the need for manual tightening, reducing labor intensity while also ensuring the production quality of the screen.

[0073] It should be noted that the connection between the connecting rod 2232 and the second clamp 222 can be achieved by a threaded connection, that is, a threaded hole is opened on the second clamp 222, and an external thread is set at one end of the connecting rod 2232 connected to the second clamp 222, so as to achieve a detachable connection between the connecting rod 2232 and the second clamp 222.

[0074] Please refer to Figure 4In one embodiment, the driving assembly 223 also includes a connecting head 2233 and a connecting block 2234, the end of the connecting head 2233 close to the tensioning cylinder 2231 is connected to the piston rod of the tensioning cylinder 2231, and the end of the connecting head 2233 away from the tensioning cylinder 2231 is provided with a mounting position, the end of the connecting block 2234 close to the connecting head 2233 extends into the mounting position and is connected to the connecting head 2233, and the end of the connecting block 2234 away from the connecting head 2233 is connected to the connecting rod 2232. In this way, the end of the connecting block 2234 close to the connecting head 2233 is extended into the installation position, and the fixing bolt 141 is used to penetrate the connecting head 2233 to connect the connecting block 2234 to the connecting head 2233, and then the end of the connecting rod 2232 close to the connecting block 2234 is connected to the connecting block 2234, thereby completing the quick connection between the driving part and the connecting rod 2232. The structure is simple, easy to disassemble and assemble, and convenient for subsequent maintenance of the equipment.

[0075] In one embodiment, the first clamp 221 and the second clamp 222 both include a clamp seat and a clamp plate. The clamp seat is disposed on the support 21 , and the clamp plate is detachably connected to the top surface of the clamp seat for clamping the screen 15 of the lower layer.

[0076] Furthermore, it also includes multiple lock buckles 28 and locking blocks 29. The outer surface of the clamp seat is provided with multiple lock buckles 28, and the outer surface of the splint is provided with multiple locking blocks 29 corresponding to the lock buckles 28 one by one. The locking blocks 29 are used to cooperate with the lock buckles 28 so that the splint can be detachably connected to the clamp seat.

[0077] That is to say, when clamping the two ends of the lower layer of the screen 15, first place the end of the lower layer of the screen 15 on the top surface of the clamp seat, and then place the clamping plate on the top surface of the clamp seat. At this time, the lock buckle 28 corresponds to the locking block 29 one by one, and finally, the lock buckle 28 is bent in the direction close to the locking block 29 so that the lock buckle 28 and the locking block 29 are engaged, thereby fixing the clamping plate on the top of the clamp seat to achieve the clamping of the lower layer of the screen 15. When the lower layer of the screen 15 needs to be removed, it is only necessary to pull the lock buckle 28 in the direction away from the locking block 29 so that the lock buckle 28 and the locking block 29 are disengaged. At this time, the clamping plate releases the clamping of the lower layer of the screen 15, and finally, it is only necessary to pull the lower layer of the screen 15.

[0078] Please refer to Figure 5In other embodiments, the clamping mechanism 24 includes a clamping cylinder 241, a fixed frame 243, a clamping frame 244 and a plurality of slide bars 242, wherein the plurality of slide bars 242 are spaced apart on the periphery of the fixed seat 210, the clamping frame 244 is disposed above the fixed seat 210 and is slidably connected to the slide bars 242, the fixed frame 243 is mounted on the top of the slide bars 242 and is located above the clamping frame 244, the clamping cylinder 241 is fixed on the fixed frame 243, and the piston rod of the clamping cylinder 241 is connected to the clamping frame 244, for driving the clamping frame 244 to reciprocate along a third direction to approach or move away from the fixed seat 210.

[0079] Exemplarily, when the clamping piece 12 is placed on the top of the annular screen frame 11, the movement of the piston rod of the clamping cylinder 241 is controlled so that the clamping frame 244 is driven to continuously approach the fixed seat 210, thereby clamping the clamping piece 12, so that the upper screen 16 can be clamped by the clamping piece 12. Finally, it is only necessary to fix the clamping piece 12 and the annular screen frame 11, and there is no need to use additional adhesive to bond the upper screen 16 and the lower screen 15 to form a whole. When a layer of the screen is damaged, only one layer of the screen needs to be replaced without replacing the entire layer, which is beneficial to reduce the maintenance cost of the screen.

[0080] The present invention is based on the web bonding method of the above-mentioned assembly device 20, comprising the following steps:

[0081] The annular screen frame 11 is placed on the fixing seat 210 for fixing;

[0082] The first clamp 221 and the second clamp 222 of the first tensioning mechanism 22 are used to clamp the two ends of the lower screen 15, and the second clamp 222 is driven by the driving component 223 to slide on the support 21 to adjust the tension of the lower screen 15, so that the lower screen 15 is in a taut state;

[0083] Apply glue to the top surface of the annular screen frame 11 through the lower screen 15, so that the lower screen 15 is bonded to the annular screen frame 11;

[0084] The second clamp 222 of the first tensioning mechanism 22 is driven to slide on the support 21 by the driving assembly 223, so that the part of the lower screen 15 that is not bonded to the annular screen frame 11 is in a relaxed state, and the excess lower screen 15 is removed;

[0085] The first clamp 221 and the second clamp 222 of the second tensioning mechanism 23 are used to clamp the two ends of the upper screen 16, and the second clamp 222 is driven by the driving component 223 to slide on the support 21 to adjust the tension of the upper screen 16, so that the upper screen 16 is in a taut state;

[0086] The pressing member 12 is placed on the top of the annular screen frame 11, and the piston rod of the pressing cylinder 241 is extended and retracted to drive the pressing frame 244 to continuously approach the fixing seat 210, thereby pressing the pressing member 12, so as to use the pressing member 12 to press the upper screen 16;

[0087] The second clamp 222 of the second tensioning mechanism 23 is driven to slide on the support 21 by the driving assembly 223, so that the part of the upper screen 16 not fixed by the pressing member 12 is in a relaxed state, and the excess upper screen 16 is removed, thereby completing the gluing of the entire screen.

[0088] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A screen structure, characterized in that: It includes an annular screen frame, a pressing piece and at least two layers of screens, the annular screen frame has a mounting end and a supporting end arranged oppositely, the annular screen frame is provided with a through hole penetrating the mounting end and the supporting end, at least two layers of the screens are stacked in sequence along the axial direction of the through hole, the screens are arranged on the end surface of the mounting end and cover the through hole, and the screens located in the lower layer are bonded to the end surface of the mounting end; the pressing piece presses all the screens onto the annular screen frame.

2. The screen structure according to claim 1, characterized in that: The outer periphery of the support end extends radially outward to form a connecting portion; the clamping member includes a clamping ring and a connecting ring arranged on the outer periphery of the clamping ring; The diameter of the central hole of the clamping ring is greater than or equal to the diameter of the through hole; The clamping ring is clamped on the mounting end, and the connecting ring is connected to the connecting portion via a fastener.

3. An assembly device for the screen structure according to any one of claims 1 to 2, characterized in that: include: A support, on which a fixing seat for fixing the annular screen frame is provided; A first tensioning mechanism, which is arranged on the support along a first direction and is used to adjust the tension of the screen at the lower layer; A second tensioning mechanism, which is arranged on the support along the second direction and is used to adjust the tension of the upper screen; A pressing mechanism, which is disposed above the fixing seat and can reciprocate along a third direction to approach or move away from the fixing seat, and is used to press the pressing member to fix the screen located at the lower layer with the screen located at the upper layer; The first direction, the second direction and the third direction are perpendicular to each other.

4. The assembly equipment according to claim 3, characterized in that The first tensioning mechanism comprises: A first clamp, which is provided on the support and located outside the fixing seat, and is used to clamp one end of the screen of the lower layer; A second clamp, which is slidably disposed on the support and is located on the opposite side of the first clamp, and is used to clamp the other end of the lower screen; A driving component is arranged on the support, and an output end of the driving component is connected to the second clamp, and is used to drive the second clamp to approach or move away from the first clamp to achieve tension adjustment of the lower layer of the screen.

5. The assembly device according to claim 4, characterized in that The first tensioning mechanism also includes: a first tensioning roller, which spans across the support along the second direction and is located between the second clamp and the fixed seat; A second tensioning roller spans over the support along the second direction and is located between the first tensioning roller and the fixed seat. The second tensioning roller is located above the first tensioning roller, and a space for clamping the lower layer of the screen is formed between the first tensioning roller and the second tensioning roller.

6. The assembly equipment according to claim 4, characterized in that The first tensioning mechanism further includes a tension detection component, and the tension detection component includes: A mounting base, which is fixed on the support; A tension meter is mounted on the mounting seat, the top of the tension meter is connected to a support block, and the end of the first tensioning roller is connected to the support block.

7. The assembly equipment according to claim 3, characterized in that The driving assembly includes a tensioning cylinder, a pressure regulating valve and a connecting rod. The tensioning cylinder is fixed on the support and is located on the outside of the second clamp. The piston rod of the tensioning cylinder is connected to the end of the connecting rod away from the second clamp, and the end of the connecting rod close to the second clamp is connected to the second clamp. The pressure regulating valve is used to adjust the amount of air source introduced into the tensioning cylinder to control the movement of the piston rod of the tensioning cylinder.

8. The assembly device according to claim 7, characterized in that The driving assembly also includes a connecting head and a connecting block, wherein one end of the connecting head close to the tensioning cylinder is connected to the piston rod of the tensioning cylinder, and an end of the connecting head away from the tensioning cylinder is provided with a mounting position, one end of the connecting block close to the connecting head extends into the mounting position and is connected to the connecting head, and one end of the connecting block away from the connecting head is connected to the connecting rod.

9. The assembly equipment according to claim 3, characterized in that The first clamp and the second clamp both include a clamp seat and a clamp plate. The clamp seat is arranged on the support. The clamp plate is detachably connected to the top surface of the clamp seat to clamp the lower layer of the screen.

10. The assembly device according to claim 9, characterized in that It also includes multiple locks and locking blocks. The outer surface of the clamp seat is provided with multiple locks, and the outer surface of the clamp plate is provided with multiple locking blocks corresponding to the locks one by one. The locking blocks are used to cooperate with the locks so that the clamp plate can be detachably connected to the clamp seat.

11. The assembly equipment according to claim 3, characterized in that The second tensioning mechanism has the same structure as the first tensioning mechanism.

12. The assembly equipment according to claim 3, characterized in that The clamping mechanism includes a clamping cylinder, a fixed frame, a clamping frame and a plurality of vertically arranged sliding rods, wherein the plurality of sliding rods are spaced apart on the periphery of the fixed seat, the clamping frame is arranged above the fixed seat and is slidably connected to the sliding rods, the fixed frame is installed on the top of the sliding rods and is located above the clamping frame, the clamping cylinder is fixed on the fixed frame, and the piston rod of the clamping cylinder is connected to the clamping frame for driving the clamping frame to reciprocate along the third direction to approach or move away from the fixed seat.

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