Driving device with tightness-adjustable belt and printing equipment

Abstract

The utility model belongs to the technical field of belt driving, and provides a driving device with a tightness-adjustable leather belt in order to overcome the defect that in the prior art, the tightness of the belt is difficult to accurately and stably adjust, and the driving device comprises a driving motor which comprises a motor main body and an output shaft; a fixing plate; the movable plate is movably connected with the fixed plate, the motor body is fixedly connected with the movable plate, and the output shaft is arranged in the movable plate in a penetrating mode; the output wheel is rotationally connected with the output shaft; the belt sleeves the periphery of the output wheel to be driven to move; the belt sleeves the periphery of the driven wheel to drive the driven wheel to rotate; the adjusting assembly adjusts the position of the movable plate relative to the fixed plate so as to adjust the tightness degree of the belt. The driving device with the tightness-adjustable belt and the printing equipment have the advantage that the tightness of the belt can be accurately and stably adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of belt drive, especially drive device with tightness adjustable belt and printing equipment. BACKGROUND

[0002] The drive device using the belt to drive the moving part is widely used in many industries, for example, in the printing industry, the nozzle trolley of printing equipment needs to be driven to make translational motion along the Y axis direction relative to the printing platform, in order to realize this, the driving motor is usually used to drive the belt to move so that the lead screw translation mechanism connected with the belt transmission drives the nozzle trolley to move along the Y axis.

[0003] Because the driving motor and the lead screw translation mechanism are connected through the belt, the tightness of the belt needs to be changed during debugging, in the conventional structure, the position of the output shaft of the driving motor and the lead screw of the lead screw translation mechanism is relatively fixed, only the position of the adjusting roller between the lead screw and the output shaft can be adjusted to change the tightness of the belt to realize the adjustment of the tightness of the belt, but the adjustment of the position of the adjusting roller is difficult to accurately and stably control, and the belt is easy to wear due to the movement imbalance caused by the adjusting roller.

[0004] Therefore, it is urgent to provide a drive device with tightness adjustable belt and printing equipment which can accurately and stably adjust the tightness of the belt. INVENTION CONTENTS

[0005] The utility model discloses to the above-mentioned prior art exists the tightness of the belt is difficult to be accurately and stably adjusted, in order to realize the purpose of the utility model, provide drive device with tightness adjustable belt, include: driving motor, it includes motor main body and output shaft, fixed plate, movable plate is movably connected with fixed plate, motor main body and movable plate fixed connection, the output shaft is arranged in movable plate, output wheel, it is rotatably connected with the output shaft, belt, it is connected in the output wheel periphery to be driven to move, passive wheel, the belt is connected in the passive wheel periphery to drive its rotation, adjusting assembly, it adjusts the position of movable plate relative to fixed plate to adjust the tightness of the belt.

[0006] Further, the fixed plate includes a through hole and a pair of support plates respectively arranged on both sides of the through hole and opposite parallel, the top surface of each support plate is provided with a sliding groove, a plurality of first fixing holes are arranged on each support plate, the two side portions of the movable plate are supported by the corresponding support plates to slide in the corresponding sliding grooves, a plurality of movable holes corresponding to the first fixing holes are arranged on the two side portions of the movable plate, and a fixing member is fixed in each pair of first fixing holes and the movable hole.

[0007] Further, the motor body side facing the movable plate is provided with a plurality of motor fixing holes, the movable plate is provided with a plurality of second fixing holes corresponding to the motor fixing holes, and a fixing member is fixed in each pair of motor fixing hole and second fixing hole.

[0008] Further, the driving device further comprises a limiting frame fixedly connected with the fixed plate, the adjusting assembly comprises an adjusting threaded rod and a movable block, the adjusting threaded rod is threadedly connected with the limiting frame, the end of the adjusting threaded rod relative to the limiting frame is abutted with the movable block, the tightness of the belt is adjusted by adjusting the length of the end, and the movable block and the movable plate are respectively provided with opposite block fixing holes and third fixing holes, and a fixing member is fixed in each pair of block fixing hole and third fixing hole.

[0009] Further, the driving device further comprises a pair of guide wheel assemblies, the guide wheel assembly comprises a guide wheel, the limiting frame comprises an adjusting support plate and a pair of fixed support plates located on both sides of the adjusting support plate, the adjusting support plate is provided with an adjusting threaded hole threadedly connected with the adjusting threaded rod, and a limiting space is formed between the adjusting support plate and each fixed support plate, the guide wheel is rotatably arranged in the limiting space, the fixed support plate and the fixed plate are respectively provided with opposite support plate fixing holes and fourth fixing holes, and a fixing member is fixed in each pair of support plate fixing hole and fourth fixing hole.

[0010] Further, the guide wheel assembly further comprises a support rotating rod and a pair of bearings, the guide wheel comprises a guide groove, a wheel through hole and wheel grooves located at both ends of the wheel through hole, the bearings are arranged in the corresponding wheel grooves, the support rotating rod passes through the wheel through hole and is inserted and fixed with the plate insertion hole on the fixed plate and the frame insertion hole on the limiting frame through the two ends of the support rotating rod.

[0011] Further, the passive wheels are provided in pairs, the rotation center lines of the two passive wheels are located on the first horizontal plane, the rotation center lines of the two guide wheels are located on the second horizontal plane, the second horizontal plane is closer to the output shaft, the guide grooves of the two guide wheels are respectively used to guide the movement of the belt between a passive wheel and the output wheel, relative to a vertical plane passing through the center axis of the output shaft, the pair of guide wheels and the pair of passive wheels are respectively arranged symmetrically relative to the vertical plane, and the pair of guide wheels are closer to the vertical plane, the extension direction of the center axis of the adjusting threaded rod is perpendicular to the extension direction of the center axis of the output shaft, and the belt is wrapped on the outer circumferences of the output wheel, the passive wheel and the guide wheel, so that the belt circulates to drive the pair of passive wheels to rotate synchronously.

[0012] Further, the movable hole is provided as a waist-shaped hole, the extension direction of the waist-shaped hole is parallel to the extension direction of the adjusting threaded rod, the fixing member is a threaded member, and the movable hole, the first fixing hole, the second fixing hole and the third fixing hole are all threaded holes.

[0013] To achieve another objective of this utility model, a printing device is provided, including a frame, a printing platform, a printhead carriage, and a lead screw. The printing device also includes a drive device with an adjustable belt, a fixed plate fixed to the frame, and the lead screw connected to the printhead carriage and a driven wheel respectively. The driven wheel drives the lead screw to rotate, and the lead screw drives the printhead carriage to translate relative to the printing platform.

[0014] Furthermore, the lead screw and the driven wheel are respectively set as a pair. The pair of lead screws are parallel to each other and are located on both sides of the printhead carriage. The lead screw drives the printhead carriage to make a translational movement in the Y-axis direction relative to the printing platform.

[0015] The beneficial effects of this utility model are as follows:

[0016] The drive unit with an adjustable belt can indirectly adjust the displacement of the drive motor mounted on the movable plate by setting an adjustable component to precisely adjust the displacement of the movable plate relative to the fixed plate and the driven wheel. In this way, the elastic deformation of the belt can be precisely adjusted through the output shaft and the output wheel, thus achieving the purpose of accurately and reliably adjusting the belt tension. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0018] Figure 1 A front view of a drive device with an adjustable belt provided in an embodiment of this utility model;

[0019] Figure 2 For corresponding Figure 1 Exploded view;

[0020] Figure 3 For corresponding Figure 1 The diagram shows the hidden limit bracket;

[0021] Figure 4 A rear-view front view of a drive device with an adjustable belt provided in an embodiment of this utility model;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1, drive motor; 11, motor main body; 111, motor fixing hole; 12, output shaft; 2, fixed plate; 21, through hole; 22, support plate; 221, sliding groove; 23, first fixing hole; 24, fourth fixing hole; 25, plate plug-in hole; 3, movable plate; 31, movable hole; 32, second fixing hole; 33, third fixing hole; 4, output wheel; 5, belt; 6, driven wheel; 7, adjusting assembly; 71, adjusting threaded rod; 72, movable block; 721, block fixing hole; 8, limiting frame; 81, adjusting support plate; 811, adjusting threaded hole; 82, fixed support plate; 821, support plate fixing hole; 83, frame plug-in hole; 9, guide wheel assembly; 91, guide wheel; 911, guide groove; 912, wheel through hole; 913, wheel groove; 92, support rotating rod; 93, bearing. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. It should be noted that, in this document, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise” and the like are based on the orientations or positional relationships 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 devices or elements 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. Moreover, the terms “include”, “contain” or any other variant thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements that are not explicitly listed or are inherent to such processes, methods, articles or devices. Without more limitations, the elements limited by the statement “include” do not exclude the presence of other identical elements in the processes, methods, articles or devices that include the elements. If there is no conflict, the embodiments of the present application and the various features in the embodiments can be combined with each other, and are all within the protection scope of the present application.

[0025] REFERENCE Figures 1 to 4The utility model provides a drive device with adjustable tightness belt, which comprises a driving motor, a fixed plate, a movable plate, an output wheel, a belt, a passive wheel and an adjusting assembly, the driving motor comprises a motor body and an output shaft, the movable plate is movably connected with the fixed plate, the motor body is fixedly connected with the movable plate, and the output shaft is arranged in the movable plate, the output wheel is rotatably connected with the output shaft, the belt is sleeved on the outer periphery of the output wheel to be driven to move, the belt is sleeved on the outer periphery of the passive wheel to drive the passive wheel to rotate, the passive wheel is connected with a transmission mechanism such as a lead screw and a transmission shaft, thereby outputting the driving force of the driving motor to drive other passive components such as a nozzle trolley to move, and the adjusting assembly adjusts the position of the movable plate relative to the fixed plate, thereby adjusting the tightness of the belt.

[0026] Therefore, the drive device with adjustable tightness belt can indirectly adjust the displacement of the driving motor arranged on the movable plate, thereby accurately adjusting the elastic deformation amount of the belt through the output shaft and the output wheel, and the purpose of accurately and stably adjusting the tightness of the belt is achieved.

[0027] Please refer to Figure 2 Specifically, the fixed plate comprises a through hole and a pair of supporting plates arranged on both sides of the through hole and parallel to each other, the top surface of each supporting plate is provided with a sliding groove, a plurality of first fixing holes are arranged on each supporting plate, the two side portions of the movable plate are supported by the corresponding supporting plates to slide in the corresponding sliding grooves, a plurality of movable holes corresponding to the first fixing holes are arranged on the two side portions of the movable plate, and a fixing member is arranged in each pair of first fixing holes and movable holes, for example, the movable hole can be a strip-shaped hole with a hole diameter larger than that of the first fixing hole and a sliding direction parallel to the sliding direction of the movable plate, so that the fixing member can be displaced relative to the first movable hole. In this way, not only does the sliding groove limit the movement of the movable plate, but also the movement of the movable plate on the sliding groove is stable.

[0028] Please refer to Figure 2 Specifically, the side of the motor body facing the movable plate is provided with a plurality of motor fixing holes, the movable plate is provided with a plurality of second fixing holes corresponding to the motor fixing holes, and a fixing member is arranged in each pair of motor fixing holes and second fixing holes. In this way, the driving motor and the movable plate are reliably fixed, and the synchronization and accuracy of the movement of the driving motor with the movable plate are high.

[0029] Please refer toFigure 1 and Figure 2 Preferably, the driving device further comprises a limiting frame 8 fixedly connected with the fixed plate 2, and the adjusting assembly 7 comprises an adjusting threaded rod 71 and a movable block 72, the adjusting threaded rod 71 is threadedly connected with the limiting frame 8, and in the embodiment, the adjusting threaded rod 71 specifically adopts an adjusting bolt, the end of the adjusting threaded rod 71 protruding out of the limiting frame 8 abuts against the movable block 72, the length of the adjusting end protruding out is adjusted to adjust the tightness of the belt 5, specifically, the length of the adjusting end protruding out can adjust the pressing force of the belt 5 from the output shaft 12, so that the elastic deformation of the belt 5 is accurately adjusted and the tightness is accurately adjusted, the movable block 72 and the movable plate 3 are respectively provided with opposite block fixing holes 721 and third fixing holes 33, and a fixing member is fixed in the pair of block fixing holes 721 and the third fixing holes 33. Thus, through the cooperation structure of the adjusting assembly 7 adopting the adjusting threaded rod 71 and the movable block 72, the rotation number and the rotation angle of the adjusting threaded rod 71 can be accurately controlled, so that the movement distance of the movable plate 3 relative to the fixed plate 2, especially in the through hole 21, can be accurately adjusted, and the tightness of the belt 5 is accurately adjusted.

[0030] Please refer to Figure 2 and Figure 3 Preferably, the driving device further comprises a pair of guide wheel assemblies 9, the guide wheel assembly 9 comprises a guide wheel 91, the limiting frame 8 comprises an adjusting support plate 81 and a pair of fixed support plates 82 located on both sides of the adjusting support plate 81, the adjusting support plate 81 is provided with an adjusting threaded hole 811 threadedly connected with the adjusting threaded rod 71, and a limiting space is formed between the adjusting support plate 81 and each fixed support plate 82, the guide wheel 91 is rotatably arranged in the limiting space, and the fixed support plate 82 and the fixed plate 2 are respectively provided with opposite support plate fixing holes 821 and fourth fixing holes 24, and a fixing member is fixed in each pair of support plate fixing holes 821 and fourth fixing holes 24. Therefore, through the arrangement of the two guide wheel assemblies 9, the balance of the entire belt transmission system in operation can be better, and the precision of the transmission of the driven wheel 6 outward is improved.

[0031] Please refer to Figure 2 Specifically, the guide wheel assembly 9 further comprises a support rotating rod 92 and a pair of bearings 93, the guide wheel 91 comprises a guide groove 911, a wheel through hole 912 and wheel grooves 913 located at both ends of the wheel through hole 912, the bearings 93 are arranged in the corresponding wheel grooves 913, and the support rotating rod 92 passes through the wheel through hole 912 and is inserted and fixed with the plate insertion hole 25 on the fixed plate 2 and the frame insertion hole 83 on the limiting frame 8 through the two ends of the support rotating rod 92. In this way, the rotation stability of each guide wheel 91 and the precision of moving the belt 5 are reliably ensured.

[0032] Please refer to Figure 3Specifically, the passive wheels 6 are arranged in pairs, and the rotation center lines of the passive wheels 6 are located on a first horizontal plane, the rotation center lines of the guide wheels 9 are located on a second horizontal plane, the second horizontal plane is closer to the output shaft 12, the guide grooves 911 of the guide wheels 9 are used to guide the movement of the belt 5 between the passive wheels 6 and the output wheels 4, the guide wheels 9 and the passive wheels 6 are symmetrically arranged relative to a vertical plane passing through the center axis of the output shaft 12, and the guide wheels 9 are closer to the vertical plane, the extending direction of the center axis of the adjusting screw rod 71 is perpendicular to the extending direction of the center axis of the output shaft 12, the belt 5 is sleeved on the outer periphery of the output wheels 4, the passive wheels 6 and the guide wheels 9, that is, the passive wheels 6, the guide wheels 9 and the output wheels 4 on the motor output shaft 12 are connected through the belt 5. Therefore, the belt 5 moves in a cycle to drive the passive wheels 6 to rotate synchronously. In this way, the whole driving device is arranged symmetrically, which is not only compact in structure, but also high in stability of the overall movement of the belt 5.

[0033] Please refer to Figure 2 Specifically, the movable hole 31 is a waist-shaped hole, so that the movable plate 3 has a movable space for lifting relative to the fixed plate 2, and when it is necessary to adjust the tightness of the belt 5, it is only necessary to adjust the position of the movable plate 3 relative to the fixed plate 2. The extending direction of the waist-shaped hole is parallel to the extending direction of the adjusting screw rod 71, the fixing member (not shown) described herein is a threaded member such as a screw, a bolt, a screw, etc., and the movable hole 31, the first fixed hole 23, the second fixed hole 32 and the third fixed hole 33 are threaded holes. In this way, the threaded connection mode of the threaded member and the threaded hole is simple to manufacture and reliable in connection.

[0034] As another purpose of the utility model, the utility model also provides a printing equipment (not shown), which comprises a rack, a printing platform, a nozzle trolley and a lead screw, the printing equipment further comprises the driving device with the tightness-adjustable belt 1 of any one of the above, the fixed plate 2 is fixed on the rack, the lead screw is connected with the nozzle trolley and the passive wheel 6 respectively, the passive wheel 6 drives the lead screw to rotate, and the lead screw drives the nozzle trolley to move relative to the printing platform. The printing equipment can obtain the beneficial effects brought by any one of the driving devices with the tightness-adjustable belt 1, which will not be repeated here. Therefore, since the tightness of the belt 5 of the driving device can be accurately and stably adjusted, the tightness of the belt 5 between the driving motor 1 and the lead screw can be conveniently adjusted, the accurate displacement of the nozzle trolley relative to the printing platform is ensured, and the printing quality is excellent.

[0035] Please refer to Figure 1Specifically, the lead screws and the passive wheels 6 are respectively arranged in pairs, the lead screws in a pair are parallel to each other and are respectively arranged at two sides of the nozzle carriage, and the nozzle carriage is driven to move in the Y-axis direction relative to the printing platform under the driving of the driving motor 1 as the Y-axis motor. Thus, the displacement of the nozzle carriage is driven by the pair of lead screws, and the stability and precision of the displacement of the nozzle carriage are improved.

[0036] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A drive device with an adjustable tension belt, characterized in that The utility model relates to a drive device, which comprises: a driving motor including a motor body and an output shaft; a fixed plate; a movable plate movably connected to the fixed plate, the motor body being fixedly connected to the movable plate, and the output shaft being arranged in the movable plate; an output wheel rotatably connected to the output shaft; a belt sleeved on the outer periphery of the output wheel to be driven to move; a driven wheel, the belt being sleeved on the outer periphery of the driven wheel to drive the driven wheel to rotate; an adjusting assembly for adjusting the position of the movable plate relative to the fixed plate to adjust the tightness of the belt.

2. The drive apparatus according to claim 1, characterized by The fixed plate comprises a through hole and a pair of support plates arranged on both sides of the through hole and parallel to each other, the top surface of each support plate is provided with a sliding groove, a plurality of first fixing holes are arranged on each support plate, the two side portions of the movable plate are supported by the corresponding support plates to slide in the corresponding sliding grooves, a plurality of movable holes corresponding to the first fixing holes are arranged on the two side portions of the movable plate, and a fixing member is fixed in each pair of first fixing holes and movable holes.

3. The drive apparatus according to claim 2, characterized by The side of the motor body facing the movable plate is provided with a plurality of motor fixing holes, and the movable plate is provided with a plurality of second fixing holes corresponding to the motor fixing holes, and a fixing member is fixed in each pair of motor fixing holes and second fixing holes.

4. The drive apparatus according to claim 3, characterized by The drive device further comprises a limiting frame fixedly connected to the fixed plate, the adjusting assembly comprises an adjusting threaded rod and a movable block, the adjusting threaded rod is threadedly connected to the limiting frame, the end of the adjusting threaded rod protruding out of the limiting frame abuts against the movable block, the tightness of the belt is adjusted by adjusting the length of the end protruding out of the limiting frame, the movable block and the movable plate are respectively provided with opposite block fixing holes and third fixing holes, and a fixing member is fixed in each pair of block fixing holes and third fixing holes.

5. The drive apparatus according to claim 4, characterized by The drive device further comprises a pair of guide wheel assemblies, the guide wheel assembly comprises a guide wheel, the limiting frame comprises an adjusting support plate and a pair of fixed support plates arranged on both sides of the adjusting support plate, an adjusting threaded hole threadedly connected to the adjusting threaded rod is arranged in the adjusting support plate, a limiting space is formed between the adjusting support plate and each fixed support plate, the guide wheel is rotatably arranged in the limiting space, the fixed support plate and the fixed plate are respectively provided with opposite support plate fixing holes and fourth fixing holes, and a fixing member is fixed in each pair of support plate fixing holes and fourth fixing holes.

6. The drive apparatus according to claim 5, characterized by The guide wheel assembly further comprises a support rotating rod and a pair of bearings, the guide wheel comprises a guide groove, a wheel through hole and wheel grooves arranged at both ends of the wheel through hole, the bearings are arranged in the corresponding wheel grooves, the support rotating rod passes through the wheel through hole and the ends thereof pass through the bearings to be insertedly fixed to the plate insertion hole on the fixed plate and the frame insertion hole on the limiting frame.

7. The drive apparatus according to claim 6, characterized by The passive wheels are arranged in pairs, and the rotation center lines of the passive wheels are located on a first horizontal plane; the rotation center lines of the guide wheels are located on a second horizontal plane, and the second horizontal plane is closer to the output shaft; the guide grooves of the guide wheels are used to guide the movement of the belt between the passive wheels and the output wheels; the guide wheels and the passive wheels are symmetrically arranged relative to a vertical plane passing through the center axis of the output shaft, and the guide wheels are closer to the vertical plane; the center axis of the adjusting screw rod is perpendicular to the center axis of the output shaft; the belt is sleeved on the outer periphery of the output wheels, the passive wheels and the guide wheels, so that the belt moves in a loop to drive the passive wheels to rotate synchronously.

8. The drive apparatus according to claim 4, characterized by The movable hole is a waist-shaped hole, and the extending direction of the waist-shaped hole is parallel to the extending direction of the adjusting screw rod; the fixing member is a threaded member; and the movable hole, the first fixing hole, the second fixing hole and the third fixing hole are threaded holes.

9. A printing apparatus comprising a frame, a print platform, a printhead carriage and a leadscrew, characterised in that, The printing device further comprises the driving device with a tension-adjustable belt according to any one of claims 1 to 7, the fixing plate is fixed to the rack, the lead screws are connected to the nozzle car and the passive wheels respectively, the passive wheels drive the lead screws to rotate, and the lead screws drive the nozzle car to move in translation relative to the printing platform.

10. The printing device according to claim 9, wherein, The lead screws and the passive wheels are arranged in pairs respectively, the lead screws are parallel to each other and are located on two sides of the nozzle car respectively, and the lead screws drive the nozzle car to move in translation in the Y-axis direction relative to the printing platform. The lead screws and the passive wheels are arranged in pairs respectively, the lead screws are parallel to each other and are located on two sides of the nozzle car respectively, and the lead screws drive the nozzle car to move in translation in the Y-axis direction relative to the printing platform.

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