A method for manufacturing a crossbeam of a digital printing machine

Abstract

The present invention relates to a method for manufacturing a crossbeam of a digital printing machine. The method is to manufacture the crossbeam by combining a polymer composite material with a steel beam blank. First, the steel beam blank and a mold are prepared, and then the steel beam blank is placed in the mold. Finally, the composite material is poured into the mold to form a guide rail mounting surface of the crossbeam. The present invention makes the accuracy of the guide rail mounting surface on the crossbeam have good controllability by pouring a polymer composite material layer, greatly reduces the processing amount, and thus greatly reduces the deformation generated during the processing, so that the crossbeam has the advantages of high precision and good stability, and the entire manufacturing process is simple, fast and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of digital printing machines, and in particular to a method for manufacturing a crossbeam of a digital printing machine. Background Art

[0002] At present, digital printing machines have been widely used in the digital textile printing industry. During the printing process, the printing machine head moves left and right along the guide rail to print and dye using ink jets, without direct contact with the object, ensuring the integrity of the printed object.

[0003] The linear guide for the left and right movement of the machine head is usually installed on the crossbeam. The linear guide is mainly installed on the crossbeam in two ways. One is to install it on the crossbeam directly through screws, and the other is to install it on the crossbeam indirectly by setting pads (as shown in the patent with publication number CN202106692U); for the first method, since there is a large guide rail mounting surface between the guide rail and the crossbeam, the accuracy of the guide rail mounting surface on the crossbeam must be very high. For the second method, the design mounting surface is reduced by setting pads. Since the guide rail is not directly installed on the crossbeam, the accuracy requirement of the crossbeam is not too high. However, welding pads on the crossbeam and scraping the pads to ensure that the guide rail mounting surfaces of multiple pads are on the same horizontal plane will make the guide rail installation more complicated and cumbersome. Therefore, the first method is still mainly used to install the guide rails. This method only needs to ensure that the guide rail installation surface on the beam meets the design accuracy requirements. The current beams are mainly made of steel beam blanks that are corrected, machined and heat treated, and finally painted on their surface. This beam manufacturing method has the following disadvantages: First, the process route is long and the cost is high; second, deformation will occur during the machining process, especially for beams used in large digital printing machines. Due to their long length, the deformation caused by the machining process is more uncontrollable, so there will still be a large error in the machining accuracy. Therefore, the subsequent use will affect the stability of the machine head operation, thereby affecting the printing accuracy.

[0004] In summary, it is necessary to improve and optimize the existing manufacturing method of the crossbeam of the digital printing machine. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a method for manufacturing a crossbeam of a digital printing machine which can avoid machining deformation.

[0006] The technical solution adopted by the present invention to solve the above problem is: a method for manufacturing a crossbeam of a digital printing machine, characterized in that the steps are as follows:

[0007] Step 1: preparing a mold and a steel beam blank that match the target beam, wherein the target beam has a guide rail mounting surface, and the mold has at least one cavity that matches the guide rail mounting surface;

[0008] Step 2: Adjust the level of the mold;

[0009] Step 3: Apply a release agent on the surface of the mold cavity;

[0010] Step 4: Grinding the surface of the steel beam blank;

[0011] Step 5: Place the steel beam blank polished in step 4 into the mold;

[0012] Step 6: pouring the polymer composite material into the mold cavity to obtain a polymer composite material layer, and allowing the steel beam blank to stand still so that the steel beam blank and the polymer composite material layer are closely attached;

[0013] Step 7: After the set static time is reached, the steel beam blank is hoisted, and the polymer composite material layer is integrally formed and composited with the steel beam blank;

[0014] Step 8: Grind off the excess burrs to create the target beam.

[0015] Preferably, the polymer composite material is composed of the following components by mass percentage: saturated resin: 8-15%; bisphenol A: 2-10%; curing agent: 1-7%; diluent: 1-5%; benzyl alcohol: 0.5-2%; defoaming agent: 0.4-3%; silicon micropowder: 7-16%; white corundum: 22-39%; silicon carbide: 15-30%; titanium dioxide: 3-7%; talc: 2-9%; fly ash: 1-4%; carbon black: 1-5%.

[0016] Preferably, in step 4, the surface of the steel beam blank is sandblasted and polished, and the surface roughness is greater than Ra3.2.

[0017] Preferably, the thickness of the polymer composite material layer is at least greater than 5 mm.

[0018] Preferably, in step six, when the polished steel beam blank is placed in the mold cavity for static rest, a height block is placed between the steel beam blank and the mold.

[0019] Preferably, in step five, the steel beam blank is positioned in the mold using a positioning backer and an auxiliary clamping device.

[0020] Compared with the prior art, the present invention has the following advantages and effects: the crossbeam is made by combining a polymer composite material with a steel beam blank. First, the steel beam blank ensures that the rigidity of the crossbeam meets the design requirements. Then, by pouring a polymer composite material layer, the accuracy of the guide rail mounting surface on the crossbeam has good controllability, which greatly reduces the processing amount, thereby greatly reducing the deformation generated during the processing, so that the crossbeam has the advantages of high precision and good stability, and the entire manufacturing process is simple, fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the crossbeam according to an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of a beam prepared by a mold according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0025] Example

[0026] See also Figure 1 and Figure 2 .

[0027] The present embodiment discloses a method for manufacturing a crossbeam of a digital printing machine, wherein the method adopts a method of combining a polymer composite material with a steel beam blank to form a desired target crossbeam. The target crossbeam prepared in the present embodiment has a guide rail mounting surface 2 on one side and a mounting base surface 3 on the bottom. The guide rail mounting surface 2 is a non-planar structure, which is used to mount a nozzle rack in a wall-mounted manner. The mounting base surface 3 is used to mount the crossbeam on a frame of the printing machine. Normally, the mounting base surface 3 does not cover the entire bottom of the crossbeam, and two connections between the crossbeam and the frame are usually provided. Therefore, two mounting base surfaces 3 are provided.

[0028] The target beam prepared in this embodiment is made of a composite of a steel beam blank 1 and a polymer composite material, wherein the guide rail mounting surface 2 and the mounting base surface 3 are both made of a polymer composite material through mold casting. This method of making a beam has the following advantages: reducing the amount of material processing, avoiding the problem of weakening the processing rigidity, and at the same time reducing the material thickness and reducing product costs; the accuracy can be determined according to the mold, the processing consistency is good, the processing cycle is short, and the stability is good and the appearance is beautiful.

[0029] In this embodiment, the steel beam blank 1 adopts a rectangular steel beam, and the polymer composite material is composed of the following components by mass percentage: saturated resin: 10%; bisphenol A: 6%; curing agent: 4%; diluent: 3%; benzyl alcohol: 1%; defoaming agent: 1%; silicon powder: 10%; white corundum: 30%; silicon carbide: 20%; titanium dioxide: 5%; talcum powder: 5%; fly ash: 2%; carbon black: 3%.

[0030] In this embodiment, the specific method steps for manufacturing the required target beam by combining the polymer composite material with the steel beam blank are as follows:

[0031] Step 1: Prepare a mold 4 and a steel beam blank 1 that match the target beam, the target beam having a guide rail mounting surface 2 and a mounting base surface 3, a positioning backer 5 and an auxiliary clamping device 6 are installed on the mold 4, the mold 4 has a cavity that matches the guide rail mounting surface, and a cavity for forming the mounting base surface 3 is opened on the side of the positioning backer 5;

[0032] Step 2: Adjust the level of the mold 4;

[0033] Step 3: Apply a release agent on the surface of the cavity of the mold 4 and the cavity of the positioning backer 5;

[0034] Step 4: Grinding the surface of the steel beam blank 1, the surface roughness of which is at least greater than Ra3.2;

[0035] Step 5: Place the steel beam blank 1 polished in step 4 in the mold cavity for static placement, and use the positioning backing 5 and the auxiliary clamping device 6 to position the steel beam blank 1. The positioning backing 5 is fixedly installed with the mold 4, and the auxiliary clamping device 6 uses a clamping spring. For details, refer to the prior art;

[0036] Step 6: pouring the polymer composite material into the cavity of the mold 4 to obtain a polymer composite material layer, which is used to form the guide rail mounting surface 2; pouring the polymer composite material into the cavity of the positioning backer 5 to form the mounting base 3, the thickness of the polymer composite material layer at the thinnest part is at least greater than 5 mm, and the steel beam blank 1 is allowed to stand still so that the steel beam blank 1 and the polymer composite material layer are closely attached;

[0037] Step 7: After the set static time is reached, the steel beam blank 1 is hoisted, and the polymer composite material layer is integrally formed and composited with the steel beam blank 1;

[0038] Step 8: Grind off the excess burrs to create the target beam.

[0039] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the protection scope of the present invention. Any changes and modifications made by any technician familiar with the technology without departing from the concept and scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A method for manufacturing a crossbeam of a digital printing machine, characterized in that: Here are the steps: Step 1: preparing a mold and a steel beam blank that match the target beam, wherein the target beam has a guide rail mounting surface, and the mold has at least one cavity that matches the guide rail mounting surface; Step 2: Adjust the level of the mold; Step 3: Apply a release agent on the surface of the mold cavity; Step 4: Grind the surface of the steel beam blank, and sandblast the surface of the steel beam blank to a surface roughness greater than Ra3.2; Step 5: Place the steel beam blank polished in step 4 into the mold, and use the positioning backing and auxiliary clamping device to position the steel beam blank into the mold; Step 6: pouring the polymer composite material into the mold cavity to obtain a polymer composite material layer, and the steel beam blank is allowed to stand still so that the steel beam blank and the polymer composite material layer are closely attached. When the polished steel beam blank is placed in the mold cavity for standing still, a height block is placed between the steel beam blank and the mold; Step 7: After the set static time is reached, the steel beam blank is hoisted, and the polymer composite material layer is integrally formed and composited with the steel beam blank, and the thickness of the polymer composite material layer is at least greater than 5 mm; Step 8: Grind off the excess burrs to make the target beam; The polymer composite material is composed of the following components by mass percentage: saturated resin: 8-15%; bisphenol A: 2-10%; curing agent: 1-7%; diluent: 1-5%; benzyl alcohol: 0.5-2%; defoaming agent: 0.4-3%; silicon micropowder: 7-16%; white corundum: 22-39%; silicon carbide: 15-30%; titanium dioxide: 3-7%; talc: 2-9%; fly ash: 1-4%; carbon black: 1-5%.

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