Aluminum hose surface printing device

Abstract

The present invention relates to the technical field of packaging material printing, and specifically proposes an aluminum hose surface printing device; the device comprises a frame, a workstation turntable is horizontally rotatably installed on the frame, a plurality of inner support components for supporting the inner wall of the aluminum hose are horizontally rotatably installed on the workstation turntable, the plurality of inner support components are evenly distributed around the central circumference of the workstation turntable, and a pushing mechanism for allowing the inner support components to completely enter the interior of the aluminum hose is fixedly installed on the frame; the frame is also equipped with a plurality of printing components equidistantly distributed around the central circumference of the workstation turntable, and the plurality of printing components are distributed on the periphery of a plurality of inner support components; the device provided by the present invention improves the stability and clamping positioning accuracy of the aluminum hose inner support clamping positioning process, thereby ensuring the consistency of the pattern position after printing, and indirectly improving the printing accuracy and quality.

Description

Technical Field

[0001] The invention relates to the technical field of packaging material printing, and specifically provides a surface printing device for an aluminum hose. Background Art

[0002] Aluminum hoses are widely used in the packaging field as packaging materials. They are usually used to package paste, paste or semi-solid products, such as toothpaste, ointment, cosmetics, paint, lubricants, etc. They have the advantages of being light, corrosion-resistant and flexible. Figure 5 As shown, a common aluminum hose blank structure is provided with a threaded pipe head at one end for assembling a threaded cap, and the other end is an open structure for subsequent filling of products. Before filling the product, the surface of the aluminum hose needs to be printed to mark the product promotion pattern and product information.

[0003] Under the existing technology, aluminum hoses can be printed by automatic printing equipment. During the printing process, the aluminum hoses are automatically loaded by a robot or a corresponding grasping device, and the aluminum hoses are supported and fixed by an inner support clamp. During actual operation, the grasping device is only responsible for putting the aluminum hose on the inner support clamp, and generally cannot guarantee that the aluminum hose can be placed in place every time. The inner support clamp will then clamp the aluminum hose, affecting the stability and positioning accuracy of the inner support fixation of the aluminum hose, thereby affecting the consistency of the printed pattern on the surface of the aluminum hose. In addition, the aluminum hose is more likely to be deformed during the printing process, affecting the clarity of the printed pattern. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an aluminum hose surface printing device, which is used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve it: an aluminum hose surface printing device, including a frame, a workstation turntable is horizontally rotatably installed on the frame, a plurality of internal support components for supporting the inner wall of the aluminum hose are horizontally rotatably installed on the workstation turntable, and the plurality of internal support components are evenly distributed around the central circumference of the workstation turntable; a pushing mechanism for allowing the internal support components to completely enter the interior of the aluminum hose is fixedly installed on the frame; the frame is also equipped with a plurality of printing components that are evenly distributed circumferentially around the center of the workstation turntable, and the plurality of printing components are distributed on the periphery of the plurality of internal support components.

[0006] The inner support component comprises an inner guide frame in a cylindrical shape, one axial end of the inner guide frame is provided with a rotating end head mounted on a work station turntable for horizontal rotation, and the other axial end of the inner guide frame is provided with an inner support conical surface that fits and contacts with the conical portion of the inner wall of the aluminum hose; a plurality of inner support members that are used to fit the inner support of the inner wall of the aluminum hose and slide in radial direction are circumferentially distributed and installed on the inner guide frame, and an inner support driving rod that synchronously drives the plurality of inner support members to clamp is installed in axial sliding cooperation; A ring cam is fixed on the frame and is coaxially installed with the workstation turntable. The ring surface of the ring cam is composed of a concave surface and a convex surface, and the concave surface and the convex surface of the ring cam have an arc transition. One end of the inner support drive rod is provided with an end ball that rolls in contact with the ring surface of the ring cam. When the end ball contacts the convex surface, the inner support drive rod clamps the inner wall of the aluminum hose through a plurality of inner support components. When the end ball contacts the concave surface, the aluminum hose is in a clamped and released state.

[0007] The pushing mechanism includes a pushing clamp that is driven to move along the axial direction of the workstation turntable. The main body of the pushing clamp is a conical shell structure. The conical taper of the pushing clamp is the same as the taper of the inner support cone. When the conical part of the aluminum hose is clamped inside and outside between the inner support cone and the pushing clamp, the pushing clamp is plug-fitted with the inner guide frame, and the pushing clamp is driven to rotate within a limited circumferential range by the workstation turntable along with the inner support component.

[0008] Preferably, the inner guide frame is provided with a central channel along the central axis, the central channel is provided with a plug hole at the central axis of the inner support cone, and a plug rod which plugs into the plug hole is fixed in the cavity of the truncated cone shell of the push-in clamp.

[0009] Preferably, a plurality of guide holes corresponding to a plurality of inner support members are provided on the side wall of the inner guide frame, the guide holes are connected to the central channel, and the guide holes are arranged along the radial guidance of the inner guide frame; the inner support member includes a slider slidably installed in the guide hole and an inner support plate fixed on the slider, the inner support plate is an arc plate structure, and the inner support plate is elastically connected to the inner guide frame.

[0010] Preferably, at least one wedge-shaped notch is provided on the sliding block; at least one group of driving balls corresponding to at least one wedge-shaped notch is installed on the inner support driving rod, the number of driving balls in one group is the same as the number of inner support parts, and the driving balls are in rolling contact with the wedge-shaped surface of the wedge-shaped notch at the corresponding position.

[0011] Preferably, the pushing mechanism also includes a cantilever frame fixed on the frame, a guide plate is vertically fixed on the cantilever frame, an arc-shaped limiting slide rail is arranged on the guide plate, and the center of the limiting slide rail coincides with the central axis of the workstation turntable; a disc slider is installed along the limiting slide rail in a sliding manner, a return spring is connected between the disc slider and the guide plate, a pushing cylinder is horizontally fixed on the disc slider, the output rod of the pushing cylinder passes through the guide plate, and the pushing clamp is fixed to the output rod end of the pushing cylinder.

[0012] Preferably, the inner guide frame is provided with spring grooves at both ends of each guide hole in the axial direction, inner support springs are fixed in the spring grooves, and the inner support springs are fixed on adjacent inner support plates.

[0013] Preferably, a keyway hole section is provided in the central channel close to the rotating end head, and a spline shaft section which is slidably matched with the keyway hole section is provided on the inner support driving rod.

[0014] Preferably, a slide bracket is fixed on the frame, and a plurality of slides corresponding to a plurality of printing components are fixed on the slide bracket, and the guiding direction of the slide is the radius direction of the workstation turntable; the printing component includes a sliding roller seat slidably installed in the slide groove, and a brush roller and a printing roller are horizontally rotatably installed on the sliding roller seat, and the roller surfaces of the brush roller and the printing roller are in contact.

[0015] Preferably, when the end ball contacts the convex surface of the annular cam, the centers of the multiple inner support plates coincide.

[0016] Preferably, one end of the arc of the limiting slide rail is closed, and when the reset spring resets the disc slider, the disc slider contacts the closed end of the limiting slide rail.

[0017] The above technical scheme has the following advantages or beneficial effects: the present invention provides an aluminum hose surface printing device, which is provided with a plurality of internal support components that can switch processing stations as the station turntable rotates, and the internal support components can realize automatic internal support clamping and loosening of the aluminum hose along with the rotation of the station turntable and the processing process, eliminating the clamping power structure; in addition, a pushing mechanism is assembled in conjunction with the internal support components, which can further push the aluminum hose after the aluminum hose set is placed, and simultaneously complete the initial positioning and clamping of the aluminum hose and the correction and shaping of local deformation to ensure that the aluminum hose is placed in place. In addition, in the process of the aluminum hose rotating to switch processing stations and the internal support components clamping the aluminum hose, the auxiliary positioning and clamping of the pushing mechanism is used to improve the stability of the internal support clamping and positioning process and the clamping and positioning accuracy, thereby ensuring the consistency of the pattern position after printing, and indirectly improving the printing accuracy and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0019] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of an aluminum hose surface printing device provided by the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of an aluminum hose surface printing device provided by the present invention at another viewing angle.

[0021] Figure 3 The present invention is a front view of an aluminum hose surface printing device provided by the present invention.

[0022] Figure 4 The figure is a side view of a surface printing device for an aluminum hose provided by the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the aluminum hose.

[0024] Figure 6 The figure is a relative position relationship diagram between the eight inner support components and the annular cam when the station turntable is in a suspended rotation state.

[0025] Figure 7 It is the front view of the inner support component.

[0026] Figure 8 yes Figure 7 Sectional view of AA.

[0027] Fig. 9 It is a three-dimensional structural diagram of the inner guide frame.

[0028] Fig.10 It is a three-dimensional structural diagram of the inner support.

[0029] Fig.11 It is a three-dimensional structural diagram of the inner support driving rod.

[0030] Fig.12 It is a three-dimensional structural diagram of the pushing mechanism.

[0031] In the figure: 1, frame; 11, station turntable; 12, annular cam; 13, slide bracket; 131, slide; 2, inner support component; 21, inner guide frame; 211, rotating end; 212, inner support cone; 213, center channel; 2131, keyway hole section; 2132, plug hole; 214, guide hole; 2141, spring groove; 22, inner support component; 221, slider; 2211, wedge-shaped notch; 222, inner support plate; 2 23. Inner support spring; 23. Inner support driving rod; 231. Spline shaft section; 232. End ball; 233. Driving ball; 3. Push-in mechanism; 31. Cantilever frame; 32. Guide plate; 321. Limit slide rail; 33. Disc slider; 34. Return spring; 35. Push-in cylinder; 36. Push-in clamp; 361. Insert rod; 4. Printing assembly; 41. Sliding roller seat; 42. Brush roller; 43. Printing roller; 5. Aluminum hose. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, a surface printing device for an aluminum hose includes a frame 1, on which a workstation turntable 11 is horizontally rotatably mounted, and on which eight internal support components 2 for supporting the inner wall of an aluminum hose 5 are horizontally rotatably mounted, and the eight internal support components 2 are evenly distributed around the central circumference of the workstation turntable 11; it should be noted that the workstation turntable 11 is an existing turntable device for intermittently rotating and switching processing stations, and its power drive structure is not described in detail here. The frame 1 is equipped with four printing components 4 that are evenly distributed around the center of the workstation turntable 11, and the four printing components 4 are distributed on the periphery of the eight internal support components 2, and the circumferential distribution spacing of the printing components 4 and the internal support components 2 is the same; the printing device provided by the present invention performs printing processing on the surface of an aluminum hose 5 of a specific size, and is provided with four printing components 4, so the aluminum hose 5 corresponding to the present invention is subjected to four-color overprinting printing processing; in this embodiment, the workstation turntable 11 is intermittently rotated, and each intermittent rotation is 45°, such as Figure 3As shown, the workstation turntable 11 rotates counterclockwise. When the intermittent rotation stops, the eight internal support components 2 are always distributed according to the distribution positions shown in the figure. The eight internal support components 2 are distributed from the positions indicated by the arrows marked S in the figure, and are respectively arranged in a counterclockwise direction as the loading position, transition position, printing position No. 1, printing position No. 2, printing position No. 3, printing position No. 4, drying position and unloading position.

[0035] like Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the inner support component 2 includes a cylindrical inner guide frame 21, which is integrally formed. A rotating end 211 is provided at one axial end of the inner guide frame 21 and is horizontally rotatably mounted on the workstation turntable 11 through a bearing. An inner support conical surface 212 is provided at the other axial end of the inner guide frame 21 to fit with the conical portion of the inner wall of the aluminum hose 5. A central channel 213 is provided through the inner guide frame 21 along the central axis. Three inner support members 22 for fitting with the inner wall of the aluminum hose 5 are evenly distributed on the inner guide frame 21 in the circumferential direction. Three inner support members 22 for fitting with the inner wall of the aluminum hose 5 are provided on the side wall of the inner guide frame 21. The three inner support members 22 are matched with the guide holes 214 one by one, the guide holes 214 are connected with the central channel 213, and the guide holes 214 are arranged along the radial guidance of the inner guide frame 21; the inner support member 22 includes a slider 221 slidably installed in the guide hole 214 and an inner support plate 222 welded on the slider 221, and the inner support plate 222 is an arc plate structure; the inner guide frame 21 is axially provided with spring grooves 2141 at both ends of each guide hole 214, and an inner support spring 223 is welded in the spring groove 2141, and the inner support spring 223 is welded to the adjacent inner support plate 222.

[0036] like Figure 4 , Figure 6 , Figure 8 , Fig.10 and Fig.11As shown, an inner support driving rod 23 is installed on the inner guide frame 21 in a sliding fit along the central channel 213 for synchronously driving the three inner support members 22 to implement clamping; a keyway hole section 2131 is provided in the central channel 213 near the rotating end 211, and a spline shaft section 231 is provided on the inner support driving rod 23 for sliding fit with the keyway hole section 2131. The frame 1 is fixed with an annular cam 12 coaxially mounted with the workstation turntable 11 by bolts. The annular surface of the annular cam 12 is composed of a concave surface and a convex surface, and there is an arc transition between the concave surface and the convex surface of the annular cam 12, one of the arc transition positions is located between the transition position and the No. 1 printing position, and the other arc transition position is located between the shade drying position and the unloading position; the slider 221 is provided with two wedge-shaped notches 2211; the inner support driving rod 23 is provided with two groups of driving balls 233 corresponding to the two wedge-shaped notches 2211, each group contains three driving balls 233, and the driving balls 233 are in rolling contact with the wedge-shaped surfaces of the wedge-shaped notches 2211 at the corresponding positions. The end of the spline shaft section 231 extending out of the central channel 213 is provided with an end ball 232 in rolling contact with the annular surface of the annular cam 12, and under the elastic force of the inner support spring 223, the end ball 232 and the annular surface of the annular cam 12 are always in a close contact state.

[0037] When the work station turntable 11 rotates intermittently, it will drive the eight inner support components 2 to rotate synchronously around their central axis, and the end ball 232 will roll along the annular surface of the annular cam 12. When the end ball 232 rolls from the concave surface of the annular cam 12 to the convex surface through the arc transition position, the inner support driving rod 23 is forced to slide along the key slot hole section 2131 in the direction close to the inner support conical surface 212, and the driving ball 233 will roll synchronously along the wedge surface of the wedge-shaped notch 2211, thereby driving the slider 221 together with the inner support plate 222 to move in the direction away from the central axis of the inner guide frame 21, and the inner support spring 223 is further Stretching; when the end ball 232 contacts the convex surface, in the present embodiment, the centers of the three inner support plates 222 are in a coincident state, and the three inner support plates 222 can fully support the inner wall of the aluminum hose 5, and the entire outer arc surface of the inner support plate 222 is completely in contact with the inner wall of the aluminum hose 5, and the aluminum hose 5 is basically in a full cylindrical shape, and no internal support extension and deformation occurs; correspondingly, when the end ball 232 rolls from the convex surface to the concave surface, under the elastic restoring force of the inner support spring 223, the inner support plate 222 moves closer to the central axis of the inner guide frame 21, and the inner support component 2 is in a loose state with respect to the aluminum hose 5.

[0038] The printing device provided by the present invention can be used in conjunction with the corresponding aluminum hose 5 grabbing equipment. During actual operation, the aluminum hose 5 to be printed can be placed on the inner support component 2 of the loading position through the grabbing equipment. The inner support component 2 of the loading position contacts the concave surface of the annular cam 12 and is in a relaxed state. Under an intermittent rotation of the work station turntable 11, the aluminum hose 5 will be driven to the transition position.

[0039] like Figure 2 , Figure 4 and Fig.12 As shown, a pushing mechanism 3 for allowing the inner support component 2 to completely enter the interior of the aluminum hose 5 is fixedly installed on the frame 1; the pushing mechanism 3 is installed and arranged relative to the transition position. The pushing mechanism 3 includes a cantilever frame 31 horizontally welded on the frame 1, and a guide plate 32 is vertically welded on the end of the cantilever frame 31 away from the workstation turntable 11, and an arc-shaped limiting slide rail 321 is provided on the guide plate 32, and an arc hole is provided on the guide plate 32 to cooperate with the limiting slide rail 321, and the center of the limiting slide rail 321 coincides with the central axis of the workstation turntable 11; a disc slider 33 is installed in a sliding manner along the limiting slide rail 321, and a reset spring 34 is connected between the disc slider 33 and the guide plate 32, and a pushing cylinder 35 is horizontally fixed on the disc slider 33 by screws, and the output direction of the pushing cylinder 35 is arranged parallel to the axial direction of the workstation turntable 11, and the output rod of the pushing cylinder 35 passes through the arc hole and faces The workstation turntable 11 has a push-in clamp 36 welded to the output rod end of the push-in cylinder 35; the main body of the push-in clamp 36 is a truncated cone shell structure, and the truncated cone taper of the push-in clamp 36 is the same as the taper of the inner support cone surface 212; the center channel 213 is located at the center axis of the inner support cone surface 212 for the plug-in hole 2132, and the truncated cone shell cavity of the push-in clamp 36 is welded with a plug rod 361 that is plugged into the plug hole 2132, and the end of the plug rod 361 is chamfered; when the conical part of the aluminum hose 5 is clamped inside and outside between the inner support cone surface 212 and the push-in clamp 36, the push-in clamp 36 is plug-fitted with the inner guide frame 21, and the push-in clamp 36 is driven by the workstation turntable 11 to rotate within a limited circumferential range along with the inner support component 2. One end of the arc of the limiting slide rail 321 is closed. When the return spring 34 returns the disc slider 33 to its original position, the disc slider 33 contacts the closed end of the limiting slide rail 321 .

[0040] When the aluminum hose 5 is in the transition position, the aluminum hose 5 will be pushed by the pushing mechanism 3. Specifically, when the work station turntable 11 is paused, the cylinder 35 is pushed in, and the pushing clamp 36 is driven to move toward the direction close to the work station turntable 11. The insertion rod 361 will be aligned with the insertion hole 2132, and the conical part of the aluminum hose 5 is clamped inside and outside between the inner support cone surface 212 and the pushing clamp 36. During the movement, if the aluminum hose 5 is not placed in place when the set is placed, the pushing clamp 36 will synchronously push the aluminum hose 5, so that the inner support cone surface 212 is tightly attached to the conical part of the inner wall of the aluminum hose 5, thereby ensuring that it is placed in place to ensure the consistency of the position of the printed pattern on the surface of the aluminum hose 5. In addition, since the aluminum hose 5 is made of aluminum material, when the aluminum hose 5 is deformed at the conical part, the deformed part can be corrected and shaped by clamping inside and outside. It should be noted that the push-in clamp block 36 can be adaptively centered during the clamping contact with the aluminum hose 5, and the end of the insertion rod 361 is chamfered, so it does not affect the alignment and insertion of the insertion rod 361 relative to the plug hole 2132.

[0041] While keeping the outer wall of the conical part of the aluminum hose 5 clamped, the station turntable 11 is started again, driving the aluminum hose 5 to rotate from the transition position to the No. 1 printing position. During the rotation, the end ball 232 rolls from the concave surface of the annular cam 12 to the convex surface. When the plug rod 361 is plugged into the plug hole 2132, the inner support component 2 drives the push-in clamp 36, the disc slider 33 and the push-in cylinder 35 to rotate synchronously with it under the guidance of the limit slide rail 321. When the end ball 232 rolls to the convex surface, the three inner support plates 2 22 automatically completes the inner support clamping of the aluminum hose 5, and maintains the auxiliary positioning clamping of the end of the aluminum hose 5 by pushing the clamp block 36 to improve the stability and accuracy of the inner support clamping and fixing of the aluminum hose 5. After the inner support clamping is completed, the pushing cylinder 35 immediately drives the pushing clamp block 36 to pull the insertion rod 361 out of the plug-in hole 2132, and the pushing clamp block 36 is in a separated state from the inner support component 2. Therefore, under the elastic force of the reset spring 34, the disc slider 33 resets and slides along the limiting slide rail 321 to a position in contact with the closed end.

[0042] like Figure 1 , Figure 2 and Figure 4As shown, a slide bracket 13 is welded on the frame 1, and four slides 131 corresponding to four printing components 4 are welded on the slide bracket 13, and the guide direction of the slide 131 is the radial direction of the station turntable 11; the printing component 4 includes a sliding roller seat 41 slidably installed in the slide groove 131, and the sliding roller seat 41 can be adjusted by cylinder drive or manually adjusted by a lead screw; a brush roller 42 and a printing roller 43 are horizontally rotatably installed on the sliding roller seat 41, and the roller surfaces of the brush roller 42 and the printing roller 43 are in contact. In this embodiment, the printing component 4 is an existing printing actuator, and the brush roller 42 is used to apply colored paint on the printing roller 43, and the printing roller 43 transfers the paint to the surface of the aluminum hose 5 through the printing mold. By sliding and adjusting the sliding roller seat 41, the contact printing state and strength between the printing roller 43 and the aluminum hose 5 can be adjusted.

[0043] When the aluminum hose 5 rotates with the work station turntable 11 to the No. 1 printing position for printing, the printing roller 43 is in close contact with the surface of the aluminum hose 5. When the printing roller 43 rotates for printing, the aluminum hose 5 and the inner support component 2 are driven to rotate synchronously through contact friction, thereby completing single-color printing; driven by the intermittent rotation of the work station turntable 11, the aluminum hose 5 will pass through the No. 1 printing position, the No. 2 printing position, the No. 3 printing position and the No. 4 printing position in sequence, thereby completing four-color overprinting. Since the inner support component 2 is integrally mounted on the station turntable 11, and the end ball 232 is always in contact with the annular surface of the annular cam 12 as the station turntable 11 rotates, it is inevitable that the inner support component 2 will rotate at a random angle. When the rotation occurs, it will obviously cause the overprinting to be misaligned. In order to avoid misalignment, eight electromagnetic locks can be fixedly installed on the station turntable 11. The eight electromagnetic locks are installed in conjunction with the eight inner support components 2. When the electromagnetic lock is powered on, the electromagnetic lock locks the rotating end 211 through magnetic attraction to prevent the inner support component 2 from rotating during the process of switching stations. It should be noted that the electromagnetic lock is an existing device. For example, in an existing self-locking motor, the output shaft can be fixed by a built-in or external electromagnetic lock. When the aluminum hose 5 rotates to the printing position for printing, at the moment when the printing roller 43 starts to rotate, the electromagnetic lock is powered off, the magnetic attraction disappears, and the rotation lock of the inner support component 2 is released.

[0044] After the four-color overprinting is completed, the aluminum hose 5 rotates to the shade drying position with the work station turntable 11, and is shade dried at the shade drying position during the intervals of the rotation of the work station turntable 11. Generally, quick-drying paint is used for printing, which can achieve rapid printing, drying and shaping. When it continues to rotate to the unloading position, the end ball 232 rolls from the convex surface to the concave surface, and the internal support component 2 is in an internal support loose clamping state. Subsequently, the printed aluminum hose 5 can be removed at the unloading position.

[0045] The present invention provides an aluminum hose surface printing device, which is provided with a plurality of inner support components 2 that can rotate with the station turntable 11 to switch the processing station, and the inner support components 2 can realize automatic inner support clamping and loosening of the aluminum hose 5 along with the rotation of the station turntable 11 and the processing process, eliminating the clamping power structure; in addition, a pushing mechanism 3 is assembled in conjunction with the inner support component 2, which can further push the aluminum hose 5 after the aluminum hose 5 is set and placed, and simultaneously complete the preliminary positioning and clamping of the aluminum hose 5 and the correction and shaping of local deformation to ensure that the aluminum hose 5 is placed in place, and in addition, in the process of the aluminum hose 5 rotating to switch the processing station and the inner support component 2 clamping the aluminum hose 5, the auxiliary positioning and clamping of the pushing mechanism 3 is used to improve the stability of the inner support clamping and positioning process and the clamping and positioning accuracy, thereby ensuring the consistency of the pattern position after printing, and indirectly improving the printing accuracy and quality.

[0046] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0048] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A device for printing the surface of an aluminum hose, characterized in that: The invention comprises a frame (1), a workstation turntable (11) being mounted horizontally and rotatably on the frame (1), a plurality of inner support components (2) for supporting the inner wall of an aluminum hose (5) being mounted horizontally and rotatably on the workstation turntable (11), the plurality of inner support components (2) being evenly distributed around the central circumference of the workstation turntable (11), and a pushing mechanism (3) being fixedly mounted on the frame (1) for allowing the inner support components (2) to completely enter the interior of the aluminum hose (5); the frame (1) is also equipped with a plurality of printing components (4) being evenly distributed around the central circumference of the workstation turntable (11), the plurality of printing components (4) being distributed around the periphery of the plurality of inner support components (2); wherein: The inner support component (2) comprises an inner guide frame (21) in a cylindrical shape, one axial end of the inner guide frame (21) is provided with a rotating end head (211) which is horizontally rotatably mounted on a work station turntable (11), and the other axial end of the inner guide frame (21) is provided with an inner support cone surface (212) which is in close contact with the conical portion of the inner wall of the aluminum hose (5); a plurality of inner support members (22) which are used to be in close contact with the inner wall of the aluminum hose (5) and to slide in radial direction are circumferentially mounted on the inner guide frame (21), and an inner support driving rod (23) which is axially slidably mounted on the inner guide frame (21) and which synchronously drives the plurality of inner support members (22) to clamp; A ring cam (12) is fixed on the frame (1) and is coaxially mounted with the workstation turntable (11). The ring surface of the ring cam (12) is composed of a concave surface and a convex surface, and the concave surface and the convex surface of the ring cam (12) are in a circular arc transition. An end ball (232) is provided at one end of the inner support driving rod (23) for rolling contact with the ring surface of the ring cam (12). When the end ball (232) is in contact with the convex surface, the inner support driving rod (23) is in an inner support clamping state with the inner wall of the aluminum hose (5) through a plurality of inner support components (2). When the end ball (232) is in contact with the concave surface, the aluminum hose (5) is in a clamped and released state. The pushing mechanism (3) comprises a pushing clamp (36) that is driven to move along the axial direction of the workstation turntable (11); the main body of the pushing clamp (36) is a truncated cone shell structure; the truncated cone taper of the pushing clamp (36) is the same as the taper of the inner support conical surface (212); when the conical portion of the aluminum hose (5) is clamped inside and outside between the inner support conical surface (212) and the pushing clamp (36), the pushing clamp (36) is plug-fitted with the inner guide frame (21), and the pushing clamp (36) is driven to rotate within a limited circumferential range by the workstation turntable (11) along with the inner support component (2); The inner guide frame (21) is provided with a central channel (213) extending through the central axis thereof, a plug hole (2132) is provided in the central channel (213) at the central axis of the inner support cone surface (212), and an insert rod (361) pluggably engaged with the plug hole (2132) is fixed in the truncated cone shell cavity of the push-in clamp block (36); A plurality of guide holes (214) corresponding to the plurality of inner support members (22) are provided on the side wall of the inner guide frame (21), the guide holes (214) being connected to the central channel (213), and the guide holes (214) being arranged along the radial direction of the inner guide frame (21); the inner support member (22) comprises a slider (221) slidably mounted in the guide hole (214) and an inner support plate (222) fixed on the slider (221), the inner support plate (222) being in an arc plate structure, and the inner support plate (222) is elastically connected to the inner guide frame (21).

2. The aluminum hose surface printing device according to claim 1, characterized in that: At least one wedge-shaped notch (2211) is provided on the slider (221); at least one group of driving balls (233) corresponding to at least one wedge-shaped notch (2211) is mounted on the inner support driving rod (23); the number of the driving balls (233) in one group is the same as the number of the inner support member (22), and the driving balls (233) are in rolling contact with the wedge-shaped surfaces of the wedge-shaped notches (2211) at corresponding positions.

3. The aluminum hose surface printing device according to claim 1, characterized in that: The pushing mechanism (3) further comprises a cantilever frame (31) fixed on the frame (1), a guide plate (32) being vertically fixed on the cantilever frame (31), an arc-shaped limiting slide rail (321) being provided on the guide plate (32), the center of the limiting slide rail (321) being coincident with the central axis of the workstation turntable (11); a disc slider (33) being slidably mounted along the limiting slide rail (321), a return spring (34) being connected between the disc slider (33) and the guide plate (32), a pushing cylinder (35) being horizontally fixed on the disc slider (33), an output rod of the pushing cylinder (35) passing through the guide plate (32), and a pushing clamp (36) being fixed to the output rod end of the pushing cylinder (35).

4. The aluminum hose surface printing device according to claim 1, characterized in that: The inner guide frame (21) is provided with spring grooves (2141) at both ends of each guide hole (214) in the axial direction, an inner support spring (223) is fixed in the spring groove (2141), and the inner support spring (223) is fixed on an adjacent inner support plate (222).

5. The aluminum hose surface printing device according to claim 1, characterized in that: A keyway hole section (2131) is provided in the central channel (213) located near the rotating end (211), and a spline shaft section (231) that is slidably matched with the keyway hole section (2131) is provided on the inner support driving rod (23).

6. The aluminum hose surface printing device according to claim 1, characterized in that: A slide groove bracket (13) is fixed on the frame (1), and a plurality of slide grooves (131) corresponding to a plurality of printing components (4) are fixed on the slide groove bracket (13), and the guiding direction of the slide groove (131) is the radial direction of the workstation turntable (11); the printing component (4) comprises a sliding roller seat (41) slidably mounted in the slide groove (131), and a brush roller (42) and a printing roller (43) are horizontally rotatably mounted on the sliding roller seat (41), and the brush roller (42) and the printing roller (43) are in contact with each other.

7. The aluminum hose surface printing device according to claim 1, characterized in that: When the end ball (232) contacts the convex surface of the annular cam (12), the centers of the circles of the plurality of inner support plates (222) coincide.

8. The aluminum hose surface printing device according to claim 3, characterized in that: One end of the arc of the limiting slide rail (321) is closed, and when the return spring (34) returns the disc slider (33), the disc slider (33) contacts the closed end of the limiting slide rail (321).

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