Mounting structure and assembling method of swing lever assembly and digital printing machine

Abstract

The application provides a mounting structure of a swing rod assembly, an assembling method and a digital printing machine. The digital printing machine comprises the mounting structure of the swing rod assembly. The mounting structure of the swing rod assembly comprises two vertical plates and a swing rod assembly. The assembling method of the swing rod assembly comprises the following steps: arranging two vertical plates which are parallel and spaced apart, forming a first mounting hole and a second mounting hole on the vertical plate, the axis of the first mounting hole and the second mounting hole is parallel and spaced apart by a preset distance, the first mounting holes on the two vertical plates are coaxially arranged, and the second mounting holes on the two vertical plates are coaxially arranged; pre-locking the fixed roller and the swing arm through the locking piece; connecting the swing rod and the swing arm; mounting the opposite ends of the fixed roller in the first mounting holes of the two vertical plates; positioning the central axis of the swing rod through the second mounting holes on the two vertical plates; locking the fixed roller and the swing arm through the locking piece to form the swing rod assembly. The parallelism of the swing rod and the fixed roller is adjusted while assembling the swing rod assembly, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of digital printing machines, and more particularly relates to an installation structure of a swing lever assembly, an assembling method and a digital printing machine. BACKGROUND

[0002] A digital printing machine is a device for printing patterns on textile fabrics. Compared with traditional printing devices, the digital printing machine has the advantages of small floor area, high automation, less labor, low energy consumption and high efficiency, and is widely used in the fields of clothing, home furnishing fabrics, sampling, T-shirts, canvas bags, cushions, scooters, flags, and textile fabrics.

[0003] In a digital printing machine, the tension control of the printing medium is currently mostly achieved through a swing lever assembly, and the assembly precision of the swing lever assembly directly affects the stability of the printing medium transmission and thus the printing precision.

[0004] Specifically, the swing lever assembly generally includes a swing lever, a fixed roller and a swing arm. The fixed roller is fixedly arranged, the swing lever is arranged in parallel with and spaced apart from the fixed roller, and the swing lever and the fixed roller are connected through the swing arm. The printing medium is arranged around the swing lever, and the swing lever is used to support the printing medium. The assembly precision of the swing lever assembly mainly refers to the parallelism of the fixed roller and the swing lever in three-dimensional space. Because the swing lever directly contacts the medium, if the parallelism is not enough, the tension of the printing medium by the swing lever will be unstable, which leads to deviation of the printing medium and ultimately affects the printing precision.

[0005] At present, the fixed roller and the swing lever are mainly assembled on a marble platform, and the parallelism of the fixed roller and the swing lever after assembly is ensured through the planar precision of the marble platform. However, when the swing lever assembly loosens during transportation, it cannot be adjusted on site. At the same time, due to the large length of the swing lever and the fixed roller, a large-size marble platform needs to be used, and the cost of the marble platform is high, resulting in high assembly cost. In addition, the surface materials of the swing lever and the fixed roller targeted by the marble platform are hard materials. If the surface materials of the swing lever and / or the fixed roller are flexible materials, the assembly precision cannot be guaranteed, and the use scenarios and range are limited. SUMMARY

[0006] The purpose of the embodiments of the present application is to provide an installation structure of a swing lever assembly, an assembling method and a digital printing machine, so as to solve the technical problems in the prior art that the assembly of the swing lever assembly through a marble platform results in high cost and limited use scenarios and range.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide an assembling method of a swing lever assembly for the assembly of a swing lever assembly in a digital printing machine, comprising the following steps:

[0008] Two vertical plates are arranged in parallel and at a distance, first mounting holes and second mounting holes are formed on the vertical plates, the axes of the first mounting holes and the second mounting holes are parallel and separated by a preset distance, the first mounting holes on the two vertical plates are coaxially arranged, and the second mounting holes on the two vertical plates are coaxially arranged;

[0009] The fixed roller and the swing arm are pre-locked by the locking member; the swing rod is connected with the swing arm;

[0010] The opposite ends of the fixed roller are respectively installed in the first mounting holes of the two vertical plates;

[0011] The central axis of the swing rod is positioned through the second mounting holes on the two vertical plates, so that the swing rod is coaxially arranged with the two second mounting holes;

[0012] The fixed roller and the swing arm are locked by the locking member.

[0013] In one embodiment, the second center point of the second mounting hole is located on a reference circle with the first center point of the first mounting hole as the center and the preset distance as the radius.

[0014] In one embodiment, before processing the second mounting hole, the following steps are included:

[0015] A standard swing rod assembly is equipped;

[0016] The opposite ends of the fixed roller of the standard swing rod assembly are respectively installed in the first mounting holes;

[0017] The standard swing rod assembly is swung, and at least one point in the swing trajectory of the central axis of the swing rod is selected for processing the second mounting hole.

[0018] In one embodiment, when the swing rod is positioned, positioning members are installed at the second mounting holes, and the opposite ends of the swing rod are respectively coaxially sleeved with the positioning members on both sides;

[0019] After the fixed roller is locked, the positioning members are removed or moved to positions avoiding the swing rod.

[0020] In another aspect, the application also provides an installation structure of a swing rod assembly, comprising:

[0021] Two vertical plates are arranged in parallel and at a distance, first mounting holes and second mounting holes are formed on the vertical plates, the axes of the first mounting holes and the second mounting holes are parallel and separated by a preset distance, the first mounting holes on the two vertical plates are coaxially arranged, and the second mounting holes on the two vertical plates are coaxially arranged;

[0022] A swing rod assembly is installed between the two vertical plates, and includes a swing rod, a fixed roller and a swing arm. The opposite ends of the fixed roller are respectively installed in the first mounting holes of the two vertical plates, and the fixed roller is connected with the swing arm through a locking member. The swing rod is connected with the swing arm, and the second mounting holes on the two vertical plates are used for positioning the central axis of the swing rod, so that the swing rod is coaxially arranged with the two second mounting holes.

[0023] In one embodiment, a second center point of the second mounting hole is located on a reference circle with a first center point of the first mounting hole as a center and with the preset distance as a radius.

[0024] In one embodiment, the mounting structure further includes a positioning member, which is movably arranged in the second mounting hole and is used for coaxially sleeving with the end of the swing rod to position the swing rod.

[0025] In one embodiment, the positioning member includes a stop portion and a positioning portion, the positioning portion is slidably and coaxially arranged in the second mounting hole, the stop portion is arranged outside the vertical plate, and the positioning portion is formed with a socket, and the end of the swing rod is coaxially inserted into the socket.

[0026] In one embodiment, the swing rod assembly includes two swing arms, the opposite ends of the fixed roller are respectively sleeved with the two swing arms through two locking members, and the opposite ends of the swing rod are respectively sleeved with the two swing arms. The two swing arms are connected with a support, and the opposite ends of the support are respectively perpendicularly fixedly connected with the two swing arms.

[0027] In one embodiment, the surface material of the swing rod is hard material, soft rubber or a brush.

[0028] The surface material of the fixed roller is hard material, soft rubber or a brush.

[0029] In another aspect, the application further provides a digital printing machine, which includes the mounting structure of the swing rod assembly.

[0030] The mounting structure of the swing lever assembly, the swing lever assembly and the digital printing machine provided in the embodiments of the present application install the fixing roller through two coaxially arranged first mounting holes, so that the fixing roller is coaxially arranged with the two first mounting holes, the swing lever is positioned through two second mounting holes, so that the swing lever is coaxially arranged with the two second mounting holes, and since the axes of the first mounting holes and the second mounting holes are arranged in parallel, the fixing roller is arranged in parallel with the swing lever, thereby ensuring the stability of the printing medium transmission and improving the printing precision. In addition, since the first mounting holes and the second mounting holes are arranged on the mounting structure of the swing lever assembly to position the fixing roller and the swing lever, the problem that the swing lever assembly cannot be adjusted on site due to loosening during transportation is avoided. Meanwhile, in the embodiments, the first mounting holes and the second mounting holes are used to position the fixing roller and the swing lever, and the surface material of the fixing roller and the swing lever is not limited, so the use range is wider. In addition, the fixing roller does not need to be assembled through a marble platform, so the assembly cost of the swing lever assembly is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1.

[0033] Figure 2 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1. Figure 1 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1.

[0034] Figure 3 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1. Figure 2 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1.

[0035] Figure 4 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1. Figure 2 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1.

[0036] Figure 5 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1. Figure 1 A partial structure schematic view of the mounting structure of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 1.

[0037] Figure 6 A schematic view for positioning the second mounting hole in the assembly method of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 8.

[0038] Figure 7 A schematic view for positioning the second mounting hole in the assembly method of the swing lever assembly provided in the embodiments of the present application is shown in FIG. 8.

[0039] In the drawings, reference numerals:

[0040] 100, vertical plate; 110, first mounting hole; 120, second mounting hole; 200, swing rod assembly; 210, swing rod; 211, fixed shaft; 2111, second step; 220, fixed roller; 221, shaft rod; 2211, first step; 222, brush cylinder; 230, swing arm; 231, through hole; 232, notch; 240, locking piece; 250, supporting piece; 260, second bearing; 270, fixed plate; 280, shaft sleeve; 300, positioning piece; 310, stop; 320, positioning part; 330, insertion hole; 400, first bearing. DETAILED DESCRIPTION

[0041] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on 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 therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0045] First, the embodiment of the present application provides a digital printing machine, comprising a mounting structure of a swing rod assembly.

[0046] Please refer to Figures 1 to 5 , the mounting structure of the swing rod assembly provided by the embodiment of the present application will be described.

[0047] The mounting structure of the swing lever assembly comprises two vertical plates 100 and a swing lever assembly 200, the two vertical plates 100 are parallel and spaced apart; the first mounting hole 110 and the second mounting hole 120 are formed on the vertical plate 100, the axes of the first mounting hole 110 and the second mounting hole 120 are parallel and spaced apart by a preset distance, the first mounting hole 110 on the two vertical plates 100 are coaxial, the second mounting hole 120 on the two vertical plates 100 are coaxial; the swing lever assembly 200 is mounted between the two vertical plates 100; the swing lever assembly 200 comprises a swing lever 210, a fixed roller 220 and a swing arm 230; the opposite ends of the fixed roller 220 are respectively mounted on the first mounting hole 110 of the two vertical plates 100, the fixed roller 220 and the swing arm 230 are connected through a locking piece 240; the swing lever 210 is connected with the swing arm 230, the second mounting hole 120 on the two vertical plates 100 is used for positioning the central axis of the swing lever 210, so that the swing lever 210 is coaxial with the two second mounting holes 120.

[0048] In the assembly process, the fixed roller 220 and the swing arm 230 are pre-locked through the locking piece 240, that is, the fixed roller 220 and the swing arm 230 are fixed together, but not locked; then the swing lever 210 is connected with the swing arm 230; then the opposite ends of the fixed roller 220 are respectively fixed on the two first mounting holes 110; finally, the central axis of the swing lever 210 is positioned through the second mounting hole 120 on the two vertical plates 100, so that the swing lever 210 is coaxial with the two second mounting holes 120. Among them, since the opposite ends of the fixed roller 220 are respectively fixed on the first mounting hole 110, the fixed roller 220 is coaxial with the first mounting hole 110, the swing lever 210 is coaxial with the two second mounting holes 120, and the axes of the first mounting hole 110 and the second mounting hole 120 are parallel, so as to ensure that the swing lever 210 and the fixed roller 220 are parallel, at this time, the locking piece 240 on the fixed roller 220 can be locked to lock the positions of the fixed roller 220, the swing lever 210 and the swing arm 230.

[0049] The mounting structure of the swing lever assembly in the embodiment of the present application installs and fixes the fixed roller 220 through two coaxially arranged first mounting holes 110, so that the fixed roller 220 is coaxially arranged with the two first mounting holes 110, and the swing lever 210 is positioned through two second mounting holes 120, so that the swing lever 210 is coaxially arranged with the two second mounting holes 120. At the same time, since the axes of the first mounting holes 110 and the second mounting holes 120 are arranged in parallel, the fixed roller 220 is arranged in parallel with the swing lever 210, thereby ensuring the stability of the printing medium transmission and improving the printing precision. In addition, since the first mounting holes 110 and the second mounting holes 120 are arranged on the mounting structure of the swing lever assembly to position the fixed roller 220 and the swing lever 210, the problem that the swing lever assembly 200 cannot be adjusted on site due to loosening during transportation is avoided. At the same time, in the embodiment, the first mounting holes 110 and the second mounting holes 120 are used to position the fixed roller 220 and the swing lever 210, and the surface material of the fixed roller 220 and the swing lever 210 is not limited, so the use range is wider. In addition, the swing lever assembly 200 does not need to be assembled through a marble platform, thereby reducing the assembly cost of the swing lever assembly 200.

[0050] In one embodiment, referring to Figure 6 , the second center point of the second mounting hole 120 is located on a reference circle with the first center point of the first mounting hole 110 as the center and a preset distance as the radius.

[0051] In one embodiment, referring to Figure 1 , Figure 3 and Figure 5 , the mounting structure further comprises a positioning piece 300, the positioning piece 300 is movably arranged in the second mounting hole 120, and the positioning piece 300 is used to coaxially sleeve the end of the swing lever 210 to position the swing lever 210. When the swing lever 210 needs to be assembled, the two positioning pieces 300 are respectively arranged at the two second mounting holes 120, and the two positioning pieces 300 are respectively coaxially sleeved with the two ends of the swing lever 210, so that the swing lever 210 is coaxially arranged with the second mounting hole 120, and the swing lever 210 is coaxially arranged with the fixed roller 220. At this time, the locking piece 240 of the fixed roller 220 can be locked, and at the same time, the two positioning pieces 300 need to be retreated in the axial direction to a position that does not affect the movement of the swing lever 210, or the two positioning pieces 300 are directly detached from the stand plate 100 for subsequent use.

[0052] In one embodiment, referring to Figure 3 , the positioning piece 300 comprises a stop portion 310 and a positioning portion 320, the positioning portion 320 is slidably and coaxially arranged in the second mounting hole 120, the stop portion 310 is arranged outside the stand plate 100, a insertion hole 330 is formed in the positioning portion 320, and the end of the swing lever 210 is coaxially inserted and matched with the insertion hole 330.

[0053] In the process of positioning the swing lever 210, the swing lever 210 can be swung to the positions corresponding to the two positioning members 300 at the two ends relative to the fixed roller 220, then the positioning portion 320 is axially inserted into the second mounting hole 120, and the positioning portion 320 is axially slid to make the insertion hole 330 of the positioning portion 320 coaxially inserted and fitted with the end of the swing lever 210, then the stop portion 310 is continuously pushed until the stop portion 310 abuts against the outside of the stand plate 100, so that the swing lever 210 is stably mounted on the two stand plates 100, at this time, the fixed roller 220 and the swing arm 230 are locked by the locking member 240 on the fixed roller 220. After the assembly is completed, the positioning member 300 is retreated axially or directly detached from the stand plate 100.

[0054] The positioning column in the embodiment is slidably and coaxially arranged in the second mounting hole 120, which ensures that the positioning portion 320 is coaxially arranged with the second mounting hole 120, and when the positioning portion 320 is coaxially sleeved with the swing lever 210, the swing lever 210 is coaxially arranged with the second mounting hole 120. Meanwhile, the positioning portion 320 is slidably arranged, which facilitates the insertion of the positioning portion 320 into the second mounting hole 120 from the outside of the stand plate 100 to assemble with the swing lever 210, and the positioning portion 320 can be removed. In addition, the stop portion 310 is arranged to limit the sliding of the positioning member 300, and also facilitates the holding operation. It can be understood that in other embodiments of the present application, the insertion hole 330 can also be formed at the end of the swing lever 210, and the positioning portion 320 is coaxially inserted and fitted with the insertion hole 330, which is not limited herein.

[0055] In one embodiment, referring to Figure 4 The locking member 240 is an expansion sleeve, which is sleeved outside the fixed roller 220, specifically, the shaft 221 of the fixed roller 220, and the swing arm 230 is sleeved outside the expansion sleeve. At the beginning of assembly, the expansion sleeve can be adjusted to a pre-locking state; after the position of the swing lever 210 is positioned, the expansion sleeve is locked, which is simple in structure and easy to operate. It can be understood that in other embodiments of the present application, the locking between the swing arm 230 and the fixed roller 220 can also be achieved by other ways, for example, a locking plate can be sleeved on the shaft 221 of the fixed roller 220, and the locking plate and the swing arm 230 are locked by screws, which is not limited herein.

[0056] In one embodiment, referring to Figure 5The swing rod assembly 200 comprises two swing arms 230, opposite ends of the fixing roller 220 are respectively sleeved with the two swing arms 230 through two locking members, and opposite ends of the swing rod 210 are respectively sleeved with the two swing arms 230. Through the arrangement of the two swing arms 230, the parallelism and assembly stability between the fixing roller 220 and the swing rod 210 can be improved. It can be understood that in other embodiments of the present application, the number of the swing arms 230 can also be one, three or more than three when the conditions permit, which is not limited herein.

[0057] In one embodiment, referring to Figure 2 and Figure 5 , the two swing arms 230 are connected with a support member 250, and opposite ends of the support member 250 are respectively perpendicularly fixedly connected with the two swing arms 230. In this embodiment, by perpendicularly and fixedly connecting the support member 250 between the two swing arms 230, the distance between the two swing arms 230 can be ensured to be fixed, and the two swing arms 230 are ensured to be arranged in parallel with each other. Therefore, when one of the swing arms 230 is assembled, the position of the other swing arm 230 is also determined, that is, the two swing arms 230 are always ensured to be in parallel during the assembly process, and the two swing arms 230 do not need to be positioned respectively, thereby reducing the assembly difficulty of the swing arms 230. In addition, since the two swing arms 230 are arranged in parallel, when the swing arms 230 are locked with the fixing roller 220, the entire swing rod assembly 200 forms a rectangle, which is stable in structure and has high printing medium conveying precision.

[0058] In one embodiment, referring to Figure 2 , end faces of the opposite ends of the support member 250 are planes, and the two end faces are respectively arranged in plane abutment with the two swing arms 230. Through the plane abutment arrangement, the parallelism of the two swing arms 230 can be ensured.

[0059] Optionally, the support member 250 is a profiled member, and the opposite ends of the support member 250 are fixed on the two swing arms 230 through screws. It can be understood that in other embodiments of the present application, the support member 250 can also be a plate member, and the support member 250 can be inserted and locked with the swing arms 230, which is not limited herein.

[0060] In one embodiment, the surface material of the swing rod 210 is a hard material, soft rubber or a brush, and the surface material of the fixing roller 220 is a hard material, soft rubber or a brush, that is, the actual tensioning requirement of the printing medium can be set. In this embodiment, since the swing rod 210 and the fixing roller 220 are positioned through the shaft hole, the surface material of the swing rod 210 and the fixing roller 220 is not limited.

[0061] In one embodiment, referring to Figure 2The fixing roller 220 comprises a shaft 221 and a brush barrel 222 sleeved on the shaft 221, and opposite ends of the shaft 221 are respectively installed on the two first mounting holes 110. The two swing arms 230 are fixed on the shaft 221 through the expansion sleeve.

[0062] In one embodiment, referring to Figure 4 The first mounting hole 110 is provided with a first bearing 400, and opposite ends of the shaft 221 are respectively installed on the two first bearings 400.

[0063] In one embodiment, referring to Figure 4 The shaft 221 is formed with a first step 2211, and the expansion sleeve is sleeved on the shaft 221 and axially limited by the first step 2211.

[0064] In one embodiment, referring to Figure 3 Opposite ends of the swing rod 210 are respectively provided with fixing shafts 211, and the swing arms 230 are sleeved on the fixing shafts 211. The fixing shafts 211 are coaxially inserted into the insertion holes 330 of the positioning members 300.

[0065] In one embodiment, referring to Figure 3 The swing arm 230 is provided with a second bearing 260, and the fixing shaft 211 is installed on the swing arm 230 through the second bearing 260.

[0066] In one embodiment, referring to Figure 5 The swing arm 230 is formed with a through hole 231 and a notch 232, the notch 232 extends from the through hole 231 to the edge of the swing arm 230, and the fixing shaft 211 can be radially inserted into the through hole 231 from the notch 232.

[0067] In one embodiment, referring to Figure 3 The swing arm 230 is provided with a fixing plate 270, the fixing plate 270 is fixed on the swing arm 230 through screws, the second bearing 260 is installed on the fixing plate 270, and the fixing shaft 211 is supported on the second bearing 260.

[0068] Referring to Figure 3 The fixing shaft 211 is formed with a second step 2111, and a shaft sleeve 280 is sleeved on the fixing shaft 211. Axial ends of the shaft sleeve 280 abut against the second step 2111 and the second bearing 260, so as to axially position the swing arm 230.

[0069] In one embodiment, the digital printing machine further comprises a driving mechanism and a detection mechanism. The detection mechanism is connected with the fixing roller 220, and is used for detecting the rotation angle of the fixing roller 220 and feeding back to the driving mechanism. The driving mechanism adjusts the conveying speed of the printing medium, so that the tension of the printing medium matches the conveying speed thereof.

[0070] In another aspect, referring to Figure 1 , Figure 5 and Figure 7 , the application further provides an assembling method of the swing lever assembly, which is used for assembling the swing lever assembly 200 in the mounting structure of the swing lever assembly. The assembling method of the swing lever assembly comprises the following steps:

[0071] S10: two parallel and spaced vertical plates 100 are arranged, the first mounting hole 110 and the second mounting hole 120 are formed on the vertical plate 100, the axes of the first mounting hole 110 and the second mounting hole 120 are parallel and spaced apart by a predetermined distance, the first mounting hole 110 on the two vertical plates 100 is coaxially arranged, and the second mounting hole 120 on the two vertical plates 100 is coaxially arranged;

[0072] Specifically, the two vertical plates 100 are plate parts on the rack for mounting the swing lever assembly 200 in the mounting structure of the swing lever assembly. Because a large number of shafts 221 need to be mounted between the two vertical plates 100, the machining precision of the two vertical plates 100 is improved during machining, and the two vertical plates 100 are ensured to be arranged in parallel during assembly, so that the two first mounting holes 110 on the two vertical plates 100 are coaxially arranged after the two vertical plates 100 are assembled, and the two second mounting holes 120 are coaxially arranged.

[0073] S20: the fixed roller 220 and the swing arm 230 are pre-locked by the locking piece 240; the swing lever 210 is connected with the swing arm 230;

[0074] Specifically, pre-locking means that the fixed roller 220 and the swing arm 230 are basically fixed, and have friction between each other, so that the relative position of the fixed roller 220 and the swing arm 230 is fixed, but the friction is not large, and when the external force is large, the assembly position between the fixed roller 220 and the swing arm 230 can be adjusted.

[0075] S30: the opposite ends of the fixed roller 220 are respectively mounted in the first mounting hole 110 of the two vertical plates 100;

[0076] Specifically, the opposite ends of the fixed roller 220 can be directly arranged in the first mounting hole 110; or, a bearing can be mounted on the vertical plate 100 to mount the fixed roller 220.

[0077] S40: the center axis of the swing lever 210 is positioned through the second mounting hole 120 on the two vertical plates 100, so that the swing lever 210 is coaxially arranged with the two second mounting holes 120;

[0078] Specifically, the axial two ends of the swing rod 210 can be provided as an axially telescopic structure, and then in the assembly process, the axial two ends of the swing rod 210 are elongated and inserted into the two second mounting holes 120 to realize the positioning of the swing rod 210; or, a detachable positioning member 300 can be installed at the second mounting hole 120 to position the swing rod 210; or, the positioning member 300 can be installed at the opposite ends of the swing rod 210, and the swing rod 210 is positioned by assembling the positioning member 300 with the second mounting hole 120.

[0079] S50: locking the fixed roller 220 and the swing arm 230 through the locking member 240.

[0080] Specifically, after step S40, the swing rod 210 is arranged in parallel with the fixed roller 220, and then the fixed roller 220 and the swing arm 230 can be locked, thereby completing the assembly of the swing rod assembly 200.

[0081] In the embodiment, the fixed roller 220 is installed through the two coaxially arranged first mounting holes 110, so that the fixed roller 220 is coaxially arranged with the two first mounting holes 110, the swing rod 210 is positioned through the two second mounting holes 120, so that the swing rod 210 is coaxially arranged with the two second mounting holes 120, and since the axes of the first mounting holes 110 and the second mounting holes 120 are arranged in parallel, the fixed roller 220 and the swing rod 210 are arranged in parallel, thereby ensuring the stability of the printing medium transmission and improving the printing precision. In addition, since the first mounting hole 110 and the second mounting hole 120 are arranged on the mounting structure of the swing rod assembly to position the fixed roller 220 and the swing rod 210, the problem that the swing rod assembly 200 cannot be adjusted on site due to loosening during transportation is avoided. In the embodiment, the first mounting hole 110 and the second mounting hole 120 are used to position the fixed roller 220 and the swing rod 210, and the surface material of the fixed roller 220 and the swing rod 210 is not limited, so the use range is wider. In addition, the swing rod assembly 200 does not need to be assembled through a marble platform, thereby reducing the assembly cost of the swing rod assembly 200.

[0082] In one embodiment, please refer to Figure 6 The second center point of the second mounting hole 120 is located on a reference circle with the first center point of the first mounting hole 110 as the center and a preset distance as the radius, that is, the second mounting hole 120 formed with any point on the reference circle as the second center point can be used for center positioning of the swing rod 210.

[0083] In one embodiment, please refer to Figure 6 Before machining the second mounting hole 120, the following steps are included:

[0084] S01: providing a standard swing rod assembly 200 that is assembled.

[0085] Specifically, the assembled standardization pendulum assembly 200 refers to the standardization pendulum assembly 200 assembled by other means, for example, the standardization pendulum assembly 200 assembled by a marble platform or a flat tabletop, the surface of which is made of hard material, and the pendulum 210 and the fixed roller 220 of which are parallel to each other.

[0086] S02: The opposite ends of the fixed roller 220 of the standardization pendulum assembly 200 are respectively installed in the two first installation holes 110.

[0087] S03: Swing the standardization pendulum assembly 200, and select at least one point in the swing trajectory of the central axis of the pendulum 210 for processing the second installation hole 120.

[0088] Specifically, by installing the opposite ends of the fixed roller 220 in the two first installation holes 110, the standardization pendulum assembly 200 can be rotated with the fixed roller 220 as the central axis, thereby forming the swing trajectory of the central axis of the pendulum 210, and at least one point in the swing trajectory is selected for installing the second installation hole 120, which can ensure the relative position of the second installation hole 120 and the first installation hole 110.

[0089] It can be understood that in other embodiments of the present application, the standardization pendulum assembly 200 can not be used to find the second installation hole 120, but other structures can be used, for example, a long shaft, one end of which is installed in the first installation hole 110 through a rotating shaft, and then the long shaft is rotated, and a point in the swing trajectory of the other end of the long shaft is selected for processing the second installation hole 120.

[0090] In one embodiment, please refer to Figure 3 and Figure 5 When positioning the pendulum 210, the positioning member 300 is installed at the second installation hole 120, and the opposite ends of the pendulum 210 are respectively coaxially sleeved with the two side positioning members 300; after the fixed roller 220 is locked, the positioning member 300 is removed or moved to a position avoiding the pendulum 210.

[0091] In one embodiment, please refer to Figure 4The locking member 240 is an expansion sleeve, which is sleeved outside the fixed roller 220, specifically, outside the shaft 221 of the fixed roller 220, and the swing arm 230 is sleeved outside the expansion sleeve. At the beginning of assembly, the expansion sleeve can be adjusted to a pre-locking state; after the position of the swing lever 210 is positioned, the expansion sleeve is locked, which is simple in structure and easy to operate. It can be understood that in other embodiments of the present application, the locking between the swing arm 230 and the fixed roller 220 can also be achieved by other ways, for example, a locking plate can be sleeved on the shaft 221 of the fixed roller 220, and the locking plate and the swing arm 230 are locked by screws, which is not limited here.

[0092] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of assembling a swing lever assembly for use in the assembly of a swing lever assembly in a digital printing machine, characterised in that, The method comprises the following steps: Two parallel and spaced vertical plates are provided, and first mounting holes and second mounting holes are formed on the vertical plates, the axes of the first mounting holes and the second mounting holes are parallel and spaced by a preset distance, the first mounting holes on the two vertical plates are coaxially arranged, and the second mounting holes on the two vertical plates are coaxially arranged; The fixed roller and the swing arm are pre-locked by the locking member; the swing rod is connected with the swing arm; The opposite ends of the fixed roller are respectively installed in the first mounting holes of the two vertical plates; The center axis of the swing rod is positioned through the second mounting holes on the two vertical plates, so that the swing rod is coaxially arranged with the two second mounting holes; The fixed roller and the swing arm are locked by the locking member; When positioning the swing rod, the positioning member is installed at the second mounting hole, and the opposite ends of the swing rod are coaxially sleeved with the positioning members on both sides; After the fixed roller is locked, the positioning member is removed or moved to a position avoiding the swing rod.

2. The method of assembling a swing bar assembly of claim 1, wherein, The second center point of the second mounting hole is located on a reference circle with the first center point of the first mounting hole as the center and the preset distance as the radius.

3. The method of assembling a swing bar assembly of claim 2, wherein, Before machining the second mounting hole, the following steps are included: A standard swing rod assembly is equipped; The opposite ends of the fixed roller of the standard swing rod assembly are respectively installed in the first mounting holes; The standard swing rod assembly is swung, and at least one point in the swing track of the center axis of the swing rod is selected for machining the second mounting hole.

4. A mounting structure of a swing lever assembly characterized by comprising: It comprises: Two vertical plates, the two vertical plates are parallel and spaced; the first mounting holes and the second mounting holes with parallel axes and a preset distance are formed on the vertical plates, the first mounting holes on the two vertical plates are coaxially arranged, and the second mounting holes on the two vertical plates are coaxially arranged; A swing rod assembly is installed between the two vertical plates; the swing rod assembly comprises a swing rod, a fixed roller and a swing arm; the opposite ends of the fixed roller are respectively installed in the first mounting holes of the two vertical plates, the fixed roller is connected with the swing arm through a locking member; the swing rod is connected with the swing arm, and the second mounting holes on the two vertical plates are used for positioning the center axis of the swing rod, so that the swing rod is coaxially arranged with the two second mounting holes; The mounting structure further comprises a positioning member, the positioning member is movably arranged in the second mounting hole, and the positioning member is used for coaxially sleeving with the end of the swing rod to position the swing rod; When positioning the swing rod, the positioning member is installed at the second mounting hole, and the opposite ends of the swing rod are coaxially sleeved with the positioning members on both sides; After the fixed roller is locked, the positioning member is removed or moved to a position avoiding the swing rod.

5. The mounting structure for a swing lever assembly according to claim 4, wherein The second center point of the second mounting hole is located on a reference circle with the first center point of the first mounting hole as the center and the preset distance as the radius.

6. The mounting structure for a swing lever assembly according to claim 4, wherein The positioning member comprises a stop portion and a positioning portion, the positioning portion is slidably and coaxially arranged in the second mounting hole; the stop portion is stopped outside the vertical plate, the positioning portion is formed with a insertion hole, and the end of the swing rod is coaxially inserted and matched with the insertion hole.

7. The mounting structure for a swing lever assembly according to claim 4, wherein The swing rod assembly comprises two swing arms, opposite ends of the fixed roller are respectively sleeved with two locking members and two swing arms, opposite ends of the swing rod are respectively sleeved with two swing arms, and support members are connected between the two swing arms, and opposite ends of the support members are respectively perpendicularly fixedly connected with the two swing arms.

8. A digital printing machine characterized by comprising: The mounting structure comprising the swing rod assembly as claimed in any one of claims 4 to 7.

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