A method and control system for high speed laying of glass fiber mats

Abstract

The application provides a glass fiber mat high-speed laying control method, which comprises the following steps: 1) single net fiber enters a laying machine front curtain, and the entering speed is set as V0; 2) according to the distance requirement reached by the net, the laying distance is set as 2.5 m, that is, the laying trolley displacement is 2.5 m; 3) the upper trolley and the laying trolley acceleration are adjusted according to the entering speed, and the acceleration can be dynamically adjusted by the entering speed a=2.5V0 2 ; 4) when the upper trolley runs to the right, the running uniform speed of the upper trolley is-0.5V0; when the upper trolley runs to the left, the running uniform speed of the upper trolley is +0.75V0; 5) when the laying trolley runs to the right, the running uniform speed of the laying trolley is-1.25V0; when the laying trolley runs to the left, the running uniform speed of the laying trolley is +1.25V0; wherein the application further provides a glass fiber mat high-speed laying control system, which adopts the control method as described above.

Description

TECHNICAL FIELD

[0001] The present application relates to a vacuum insulation panel, in particular to a laying system of a core material of a vacuum insulation panel. BACKGROUND

[0002] Vacuum insulation panel (VIP panel) is the abbreviation of English Vacuum Insulation Panel, which is one of vacuum insulation materials. It is composed of filling core material, gas adsorbent and barrier bag. Vacuum insulation panel can be widely used in various industries. The internal structure of vacuum insulation panel is composed of multiple layers of glass fiber mats with certain thickness. The single net weight of glass fiber mat is 20-400g / m 2 After laying, the net weight is 1500-5000g / m 2

[0003] The glass fiber thick mat 12mm-150mm with a weight of 1000-5000g / m 2 is obtained by high-speed laying method. Then, vacuum insulation panel is prepared by baking and hot pressing, packaging barrier bag and vacuumizing. SUMMARY

[0004] The main technical problem to be solved by the present application is to provide a glass fiber mat high-speed laying control method, which can realize high-speed laying of glass fiber mat with different thickness and weight of single net. While keeping the laying distance consistent, the laying speed and laying acceleration are dynamically adjusted.

[0005] To solve the above technical problems, the present application provides a glass fiber mat high-speed laying control method, which comprises the following steps:

[0006] 1) The single net fiber enters the laying machine curtain, and the entering speed is set as V0;

[0007] 2) According to the distance requirement reached by the net, the laying distance S is set as 2.5m;

[0008] 3) When the upper trolley runs to the right, the uniform speed state speed of the upper trolley is-0.5V0;

[0009] When the upper trolley runs to the left, the uniform speed state speed of the upper trolley is+0.75V0;

[0010] When the laying trolley runs to the right, the uniform speed state speed of the laying trolley is-1.25V0;

[0011] When the laying trolley runs to the left, the uniform speed state speed of the laying trolley is+1.25V0;

[0012] In a preferred embodiment: the acceleration values of the upper trolley and the laying trolley in the acceleration state and the deceleration state are a, which is determined by the entering speed V0.

[0013] a = 2.5V0 2

[0014] In a preferred embodiment: the cycle T of the trolley and the laying trolley = 4 / V0+2.5V0 / a.

[0015] In a preferred embodiment: the laying trolley is divided into a first acceleration section, a positive uniform speed section, a deceleration section, a negative uniform speed section and a second acceleration section in a cycle T.

[0016] In a preferred embodiment: the displacement equation of the laying trolley in the first acceleration section is:

[0017]

[0018] wherein t is any time in the first acceleration section, 0≤t≤1.25V0 / a.

[0019] In a preferred embodiment: the displacement equation of the laying trolley in the positive uniform speed section is:

[0020]

[0021] wherein t is any time in the positive uniform speed section, 1.25V0 / a≤t≤2 / V0

[0022] In a preferred embodiment: the displacement equation of the laying trolley in the deceleration section is:

[0023]

[0024] wherein t is any time in the deceleration section, 2 / V0≤t≤2 / V0+2.5V0 / a.

[0025] In a preferred embodiment: the displacement equation of the laying trolley in the negative uniform speed section is:

[0026]

[0027] wherein t is any time in the negative uniform speed section, 2 / V0+2.5V0 / a≤t≤4 / V0+1.25V0 / a.

[0028] In a preferred embodiment: the displacement equation of the laying trolley in the second acceleration section is:

[0029]

[0030] wherein t is any time in the second acceleration section, 4 / V0+1.25V0 / a≤t≤4 / V0+2.5V0 / a

[0031] The application also provides a glass fiber mat high-speed laying control system adopting the control method.

[0032] Compared with the prior art, the technical scheme of the application has the following beneficial effects:

[0033] The application provides a glass fiber mat high-speed laying control method, wherein the laying trolley speed is adjusted through a control algorithm. 2 The laying trolley running speed is changed as required, the optimal laying speed is adjusted, and the optimal laying effect is achieved.

[0034] The application provides a glass fiber mat high-speed laying control method.

[0035] The application provides a glass fiber mat high-speed laying control method, wherein the laying trolley speed is adjusted through a control algorithm.

[0036] The application automatically controls the acceleration of the laying trolley in real time through program calculation. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 FIG. 1 is a schematic diagram of a laying system in a preferred embodiment of the application;

[0038] Figure 2 FIG. 2 is a schematic diagram of a control method in a preferred embodiment of the application;

[0039] Figure 3 FIG. 3 is a schematic diagram of the running period of an upper trolley and a laying trolley in a preferred embodiment of the application;

[0040] Figure 4A segmented schematic view of a laying trolley in one cycle of a preferred embodiment of the present application; DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0042] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be wall-mounted connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through an intermediate medium, can be the communication between two elements, and those of ordinary skill in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0044] Reference Figure 1 - Figure, the embodiment provides a high-speed glass fiber mat laying control system, comprising: a glass fiber single web conveyor 1, a front curtain 2, a front curtain roller blind motor 3, a glass fiber laying web output curtain 4, a laying trolley 5, an upper trolley 6, a rear curtain motor 7, a rear curtain 8, an upper trolley synchronous belt motor 9, a laying trolley synchronous belt motor 10, a front curtain compensation trolley 11 and a rear curtain compensation trolley 12.

[0045] In use, the glass fiber is subjected to rough opening, fine opening, carding and other processes to form a glass fiber mat, a single web of 20-400 g / m 2 Thin web, conveyed to the front curtain of the high-speed laying machine by the glass fiber single web conveyor. The high-speed laying machine performs cross stacking and reciprocating laying to a thick web state, with a grammage of 1000-5000 g / m 2 , meeting the grammage requirement and uniformity index, and output to the glass fiber laying web output curtain 4.

[0046] The high-speed web-laying machine mainly comprises a top trolley 6, a web-laying trolley 5, a front curtain 2, a rear curtain 8, a front curtain compensation trolley 11, a rear curtain compensation trolley 12 and their auxiliary electric mechanisms.

[0047] The top trolley 6 and the front curtain compensation trolley 11 form a set of moving units, the top trolley moves right while the front curtain compensation trolley moves left. Conversely, the moving directions of the top trolley 6 and the front curtain compensation trolley 11 are opposite. The top trolley synchronous belt motor 9 drives the moving units to form a closed-loop movement.

[0048] The web-laying trolley 5 and the rear curtain compensation trolley 12 form a set of moving units, the web-laying trolley 5 moves right while the rear curtain compensation trolley 12 moves left. Conversely, the moving directions of the web-laying trolley 5 and the rear curtain compensation trolley 12 are opposite. The web-laying trolley synchronous belt motor 10 drives the moving units to form a closed-loop movement.

[0049] The front curtain 2 and the rear curtain 8 in the web-laying machine play a role of supporting and conveying the thin web. When the web-laying speed is high, the relative speed around increases, which causes the thin web to drift, thereby affecting the web-laying quality. In order to meet the requirement of high-speed web-laying, the front curtain 2 and the rear curtain 8 hold the thin web by using the anti-static carbon curtain, and the thin web makes reciprocating movement in the holding state, thus avoiding air flow interference and accidental drafting, realizing high-speed web-laying, and improving the uniformity of the web. The front curtain roll curtain motor 3 and the rear curtain motor 7 for controlling the front curtain 2 and the rear curtain 8 respectively adopt servo motors and variable frequency control. The web-laying machine is also provided with a web curtain deviation rectifying device to prevent the front curtain 2 and the rear curtain 8 from running skew.

[0050] The high-speed web-laying control system of the glass fiber thin felt above adopts the following control method to control the speed of the web-laying trolley, comprising the following steps:

[0051] 1) Single web fiber enters the front curtain of the web-laying machine, and the entering web speed is set as V0;

[0052] 2) According to the distance requirement reached by the web, the web-laying distance S is set as 2.5 m;

[0053] 3) The acceleration value of the top trolley and the web-laying trolley in the acceleration state and the deceleration state is a, which is determined by the entering web speed V0, a = 2.5V0 2 ;

[0054] When the top trolley and the web-laying trolley accelerate or decelerate, they will enter the uniform speed running state, which is divided into right running and left running:

[0055] When the top trolley runs right, the running uniform speed of the top trolley is -0.5V0;

[0056] When the top trolley runs left, the running uniform speed of the top trolley is +0.75V0;

[0057] When the laying trolley runs to the right, the uniform speed of the laying trolley is -1.25V0;

[0058] When the laying trolley runs to the left, the uniform speed of the laying trolley is +1.25V0;

[0059] The upper trolley and the laying trolley are accelerated from the static state to the uniform speed in the positive direction, and then decelerated to the uniform speed in the reverse direction, and then accelerated to the state of 0 speed in the positive direction, to achieve a complete cycle T, T=4 / V0+2.5V0 / a, wherein a=2.5V0 2

[0060] Therefore, the laying trolley is divided into a first acceleration section, a positive uniform speed section, a deceleration section, a negative uniform speed section and a second acceleration section in a cycle T. The acceleration values of the upper trolley and the laying trolley in the acceleration state and the deceleration state are a, which is determined by the entering speed V0, a=2.5V0 2 The cycle T of the trolley and the laying trolley is T=4 / V0+2.5V0 / a.

[0061] The displacement equation of the laying trolley in the first acceleration section is:

[0062]

[0063] Wherein t is any time in the first acceleration section, 0≤t≤1.25V0 / a.

[0064] The displacement equation of the laying trolley in the positive uniform speed section is:

[0065]

[0066] Wherein t is any time in the positive uniform speed section, 1.25V0 / a≤t≤2 / V0

[0067] The displacement equation of the laying trolley in the deceleration section is:

[0068]

[0069] Wherein t is any time in the deceleration section, 2 / V0≤t≤2 / V0+2.5V0 / a.

[0070] The displacement equation of the laying trolley in the negative uniform speed section is:

[0071]

[0072] Wherein t is any time in the negative uniform speed section, 2 / V0+2.5V0 / a≤t≤4 / V0+1.25V0 / a.

[0073] The displacement equation of the laying cart in the second acceleration section is:

[0074]

[0075] wherein t is any time in the second acceleration section, 4 / V0+1.25V0 / a≤t≤4 / V0+2.5V0 / a.

[0076] For the upper cart, there are several key moments in a cycle, such as Figure 3 As shown in the figure, the key moments are expressed as:

[0077]

[0078]

[0079] Similarly, for the laying cart, there are several key moments in a cycle, such as Figure 3 As shown in the figure, the key moments are expressed as:

[0080]

[0081] Referring to Figure 4 , the speed of the laying cart when laying any layer is in 7 time periods: A acceleration section (t0-t1), B constant speed section (t1-t2), C deceleration section (t2-t3), D constant speed section (t3-t4), E acceleration section (t4-t5)

[0082] The speed of the laying cart is adjusted through the above control algorithm. The laying speed can be adjusted according to the incoming speed. The output speed of the laid web is related to the running speed of the laying cart and the web clamped in the screen. By automatically controlling the acceleration of the cart, the running speed of the laying cart is changed as needed, and the optimal laying speed is adjusted to help achieve the best laying effect.

[0083] The above is only the preferred specific implementation of the present application, but the design concept of the present application is not limited to this. Any skilled person in the art can make non-essential changes to the present application within the technical scope disclosed by the present application, which is an act of infringing the protection scope of the present application.

Claims

1. A method of controlling a high speed laying of a glass fiber mat, characterized in that It comprises the following steps: 1) Single net fiber enters the curtain of the laying machine, and the entering speed is set as V0; 2) According to the distance requirement reached by the laying machine, the laying distance S is set as 2.5m; 3) When the upper trolley runs to the right, the running speed of the upper trolley in the uniform speed state is -0.5V0; When the upper trolley runs to the left, the running speed of the upper trolley in the uniform speed state is +0.75V0; When the laying trolley runs to the right, the running speed of the laying trolley in the uniform speed state is -1.25V0; When the laying trolley runs to the left, the running speed of the laying trolley in the uniform speed state is +1.25V0; The acceleration value of the upper trolley and the laying trolley in the acceleration state and the deceleration state is a, which is determined by the entering web speed V0: ; The cycle T of the trolley and the laying trolley is 4 / V0+ 2.5V0 / a.

2. A method of controlling the high speed laying of a glass fiber mat according to claim 1, characterized in that: The laying trolley is divided into a first acceleration section, a forward uniform speed section, a deceleration section, a negative uniform speed section and a second acceleration section in one cycle T.

3. A method of controlling the high velocity laying of a glass fiber mat according to claim 2, characterized in that: The displacement equation of the laying trolley in the first acceleration section is: ； Wherein t is any time in the first acceleration section, 0≤t≤1.25V0 / a.

4. A method of controlling the high velocity laying of a glass fiber mat according to claim 2, characterized in that: The displacement equation of the laying trolley in the forward uniform speed section is: ； where t is any time instant in the positive uniform velocity segment, 1.25V0 / a≤t≤2 / V 0。 5. A method of controlling the high velocity laying of a glass fiber mat according to claim 2, wherein: The displacement equation of the laying trolley in the negative uniform speed section is: ； Wherein t is any time in the negative uniform speed section, 2 / V0+ 2.5V0 / a≤t≤4 / V0+ 1.25V0 / a.

6. A glass fiber mat high speed laying control system characterized by The control method in any one of claims 1-5 is adopted.

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