Belt tensioning mechanism, belt driving mechanism and machining apparatus

Abstract

A belt tensioning mechanism, comprising a tensioning pulley (110), a fixing member (120), an adjusting member (140), a positioning member (130), and a fastening member (150). The fixing member is fixedly connected to an external rack, and is movably connected to the adjusting member; the tensioning pulley is fixed to the adjusting member and is connected to a belt, the belt being in driving connection with a first belt pulley; the fastening member passes through the adjusting member to abut against the fixing member and is used for adjusting the distance between the adjusting member and the fixing member; when the fastening member is adjusted to move the adjusting member so as to change the distance between the adjusting member and the fixing member, the tensioning pulley moves in the same direction along with the adjusting member. Further disclosed are a belt driving mechanism and a machining apparatus.

Description

Belt tensioning mechanism, belt transmission mechanism and processing equipment Technical Field

[0001] The present invention relates to the technical field of transmission mechanisms, and in particular to a belt tensioning mechanism, a belt transmission mechanism and a processing device. Background Art

[0002] A belt drive is a commonly used transmission mechanism, typically consisting of a driving pulley, a driven pulley, and a belt connecting them. A wide variety of belts exist, including flat belts, V-belts, wedge belts, and synchronous belts. During operation, the driving pulley rotates, generating friction between the driving pulley and the belt, which in turn drives the driven pulley. During this process, the belt needs to be tensioned between the driving and driven pulleys to ensure sufficient friction for power transmission. However, after a period of operation, the belt often ages and becomes loose, affecting the proper functioning of the belt drive. To ensure proper operation, the entire belt must be replaced or an additional belt adjustment mechanism must be added. Replacing the entire belt requires disassembling the entire structure, which is not only time-consuming and labor-intensive, but also increases the material cost of the replacement belt. Adding an additional belt adjustment mechanism often requires the introduction of numerous complex connection structures, such as screws, motors, and cylinders, which significantly increases the size of the corresponding belt drive structure. This makes it unsuitable for miniaturized electrical appliances requiring minimal size.

[0003] Therefore, how to provide a belt tensioning mechanism and a belt transmission structure that are compact, simple, and easy to adjust is an urgent problem to be solved. Summary of the Invention

[0004] Belt drives are widely used in the mechanical field, and the belt is undoubtedly a crucial component. With increased use, or due to oxidation and aging, the belt gradually lengthens, making it difficult to properly tension the corresponding drive pulley, thus affecting transmission efficiency. Existing technologies typically require replacing the belt or adding cumbersome motors, screws, and other accessories to ensure the belt can tension the pulley, which is neither cost-effective nor conducive to the demand for miniaturization of electrical appliances.

[0005] In order to solve the defects of the prior art, the present invention proposes a belt tensioning mechanism, which can be used to adjust the belt so that the belt is always in a tensioned state.

[0006] The belt tensioning mechanism comprises a tensioning pulley, a fixing member, an adjusting member and a fastening member.

[0007] The fixing member is fixedly connected to the external frame and movably connected to the adjusting member. The tension pulley is fixed to the adjusting member. The fastener passes through the adjusting member and abuts against the fixing member, thereby adjusting the distance between the adjusting member and the fixing member. When the fastener is adjusted to move the adjusting member and change the distance between the adjusting member and the fixing member, the tension pulley moves in the same direction as the adjusting member.

[0008] In an optional embodiment, the belt tensioning mechanism further comprises a positioning member. The tensioning pulley is provided with a through hole, the through hole being located at the center of the tensioning pulley, the positioning member extending through the through hole of the tensioning pulley, and the positioning member being fixedly connected to the adjusting member so that the tensioning pulley and the positioning member are fixedly connected.

[0009] In an optional embodiment, the adjusting member is provided with a first limiting hole and a second limiting hole, the positioning member passes through the first limiting hole and the second limiting hole, a limiting block is provided on the first end of the positioning member, and an annular groove is provided on the second end of the positioning member, and the size of the limiting block is larger than the size of the first limiting hole.

[0010] In an optional embodiment, the fixing member is provided with a first sliding hole, allowing the positioning member to move in the first sliding hole, and the adjusting member is provided with a first limiting hole, and the positioning member passes through the first sliding hole and is fixedly connected to the first limiting hole; the first end of the positioning member has a limiting block, and the aperture of the first limiting hole is not less than the width of the positioning member and is less than the width of the limiting block.

[0011] In an optional embodiment, the fastener is a fastening screw, the adjusting member has an adjustment hole, the fastening screw passes through the adjustment hole and abuts against the fixing member, the inner wall of the adjustment hole is provided with an internal thread, the fastening screw is provided with an external thread, and the fastener is threadedly connected to the adjusting member.

[0012] In an optional embodiment, the adjustment member includes a first adjustment plate, a second adjustment plate, and a third adjustment plate. The first adjustment plate is disposed opposite the second adjustment plate, the third adjustment plate connects the first and second adjustment plates, the first adjustment plate is provided with a first limiting hole, the second adjustment plate is provided with a second limiting hole, and the third adjustment plate is provided with an adjustment hole.

[0013] The fixing member further includes a first fixing plate, a second fixing plate, and a third fixing plate. The first fixing plate is disposed opposite the second fixing plate. The third fixing plate connects the first and second fixing plates. The first fixing plate is provided with a first sliding hole, and the second fixing plate is provided with a second sliding hole.

[0014] In an optional embodiment, the adjusting member is recessed with a notch, and the fixing plate is protruding with a clamping plate. When the fastener is manipulated to adjust the distance between the adjusting member and the fixing member, the adjusting member rotates around the contact point between the notch and the clamping plate as a fulcrum.

[0015] In an optional embodiment, the belt tensioning mechanism includes a positioning member, the tensioning pulley is provided with a through hole, and the fixing member includes a first fixing plate and a second fixing plate arranged opposite each other, the first fixing plate being provided with a first sliding hole, and the second fixing plate being provided with a second sliding hole corresponding to the first sliding hole. The adjusting member is movably sleeved on the fixing member, and the adjusting member is provided with a first limiting hole, a second limiting hole, and an adjustment hole, the first limiting hole and the second limiting hole being arranged opposite each other. The positioning member sequentially passes through the first limiting hole, the first sliding hole, the through hole, the second sliding hole, and the second limiting hole, thereby connecting the tensioning pulley to the fixing member and the adjusting member. The fastener passes through the adjustment hole and abuts against the fixing member.

[0016] When the fastener rotates in a first rotation direction or a second rotation direction opposite to the first rotation direction under the drive of an external force, the adjusting member moves relative to the fixing member under the reaction force of the fixing member, driving the positioning member to slide in the first sliding hole and the second sliding hole, thereby driving the tensioning pulley to move to a preset position.

[0017] The present invention also provides a belt drive mechanism comprising the aforementioned belt tensioning mechanism, a belt, a driving pulley, a first driven pulley, and a second driven pulley. The belt has a smooth surface and a toothed surface, and the toothed surface is connected to the teeth of the tensioning pulley. The first driven pulley is disposed opposite the tensioning pulley. The toothed surface is connected to the teeth of the first driven pulley. The second driven pulley and the driving pulley are located between the tensioning pulley and the first driven pulley. The second driven pulley is connected to the smooth surface, and the driving pulley is connected to the toothed surface.

[0018] The present invention also provides a processing device comprising the above-mentioned belt transmission mechanism.

[0019] In the belt tensioning mechanism of the present invention, the tensioning pulley is fixedly connected to the adjusting member, and the adjusting member is connected to the fixing member, that is, the position of the tensioning pulley relative to the position of the adjusting member is fixed, and the position of the tensioning pulley relative to the fixing member is variable. When an external force is applied to the fastener to drive the fastener to move, since the fixing member is connected to the frame, manipulating the fastener movement can cause the adjusting member to move relative to the fixing member. Specifically, the position of the fixing member is fixed, and since the fastener is in contact with the fixing member, after receiving the force applied by the fastener, the fixing member will apply a reaction force to the adjusting member, driving the adjusting member to move relative to the fixing member, thereby changing the distance between the adjusting member and the fixing member. At the same time, since the tensioning pulley is fixedly connected to the adjusting member, the tensioning pulley moves in the same direction as the adjusting member, causing the position of the tensioning pulley relative to the fixing member to change. When the tensioning pulley is applied to the belt transmission mechanism, for example, when the belt is too loose, the fastener can be rotated in a first rotational direction, increasing the distance between the adjusting member and the fixed member, moving the adjusting member away from the fixed member, and the tensioning pulley moves in the same direction as the adjusting member, tightening the belt. When the belt is too tight, the fastener can be rotated in a second rotational direction, opposite the first rotational direction, decreasing the distance between the adjusting member and the fixed member, moving the adjusting member closer to the fixed member, and the tensioning pulley moves in the same direction as the adjusting member, loosening the belt. In other words, by rotating the fastener, the belt can be consistently maintained in a tensioned state. Compared to the prior art, the belt tensioning mechanism of the present invention can be applied to various belt transmission mechanisms to adjust the tension of the belt, significantly reducing maintenance costs for users. Furthermore, the belt tensioning mechanism of the present invention has a simple and compact structure and can be installed in the belt transmission mechanisms of small electrical appliances, offering a wider range of applications. When the belt tensioning mechanism of the present invention is installed in the belt transmission mechanism of the present invention, the tensioning pulley is connected to the belt transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the mechanisms shown in these drawings without paying any creative work.

[0021] FIG1 is a schematic structural diagram of a belt tensioning mechanism provided in an embodiment of the present invention.

[0022] FIG2 is another schematic structural diagram of the belt tensioning mechanism provided in an embodiment of the present invention.

[0023] FIG3 is a side view of a belt tensioning mechanism provided in an embodiment of the present invention.

[0024] FIG4 is an exploded view of a belt tensioning mechanism provided in an embodiment of the present invention.

[0025] FIG5 is a schematic structural diagram of a belt transmission mechanism provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] References to "embodiments" herein mean that a particular feature, mechanism, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] 1-4 , the present invention proposes a belt tensioning mechanism 100 , which can be used to adjust a belt so that the belt is always in a tensioned state.

[0029] The belt tensioning mechanism 100 includes a tensioning pulley 110, a fixing member 120, an adjusting member 140, a positioning member 130, and a fastener 150. The belt tensioning mechanism includes the tensioning pulley 110, the fixing member 120, the adjusting member 140, the positioning member 130, and the fastener 150. The fixing member 120 is fixedly connected to an external frame and movably connected to the adjusting member 140. The tensioning pulley 110 is fixed to the adjusting member 140 and connected to a belt, which is in transmission connection with the first pulley. The fastener 150 passes through the adjusting member 140 and abuts against the fixing member 120, used to adjust the distance between the adjusting member 140 and the fixing member 120. When the fastener 150 is adjusted to move the adjusting member 140, thereby changing the distance between the adjusting member 140 and the fixing member 120, the tensioning pulley 110 moves in the same direction as the adjusting member 140.

[0030] In the belt tensioning mechanism of the present invention, the tensioning pulley 110 is fixedly connected to the adjusting member 140, and the adjusting member 140 is movably connected to the fixing member 120. That is, the position of the tensioning pulley 110 relative to the adjusting member 140 is fixed, while the position of the tensioning pulley 110 relative to the fixing member 120 is variable. When an external force is applied to the fastener 150 to drive the fastener 150 to move, since the fixing member 120 is connected to the frame, manipulating the fastener 150 to move can cause the adjusting member 140 to move relative to the fixing member 120. Specifically, the position of the fixing member 120 is fixed. Since the fastener 150 abuts the fixing member 120, after receiving the force applied by the fastener 150, the fixing member 120 will apply a reaction force to the adjusting member 140, driving the adjusting member 140 to move relative to the fixing member 120, thereby changing the distance between the adjusting member 140 and the fixing member 120. At the same time, because the tension pulley 110 is fixedly connected to the adjusting member 140, the tension pulley 110 moves in the same direction as the adjusting member 140, causing the position of the tension pulley 110 relative to the fixing member 120 to change. When the tension pulley 110 is applied to a belt transmission mechanism, for example, when the belt is too loose, the fastener 150 can be manipulated to rotate in a first rotational direction, thereby increasing the distance between the adjusting member 140 and the fixing member 120, causing the adjusting member 140 to move away from the fixing member 120, and the tension pulley 110 to move in the same direction as the adjusting member 140, thereby tightening the belt. When the belt is too tight, the fastener 150 can be manipulated to rotate in a second rotational direction, opposite to the first rotational direction, thereby decreasing the distance between the adjusting member 140 and the fixing member 120, causing the adjusting member 140 to move closer to the belt, and the tension pulley 110 to move in the same direction as the adjusting member 140, thereby loosening the belt. In other words, by rotating the fastener 150, the belt can be consistently maintained in a tensioned state. Compared to existing technologies, the belt tensioning mechanism of the present invention can be applied to various belt drive mechanisms to adjust belt tension, significantly reducing maintenance costs for users. Furthermore, the belt tensioning mechanism structure 100 is simple and compact, and can be installed in the belt drive mechanisms of some small electrical appliances, thus offering a wider range of applications.

[0031] In an optional embodiment, a through hole 111 is provided on the tension pulley 110. The through hole 111 is located at the center of the tension pulley. The fixing member 120 also includes a first fixing plate 121, a second fixing plate 122, and a third fixing plate 123. The first fixing plate 121 and the second fixing plate 123 are arranged opposite to each other. The third fixing plate 123 connects the first fixing plate 121 and the second fixing plate 122, and the angles between the third fixing plate 123 and the first fixing plate 121 and the second fixing plate 122 are all 90 degrees. A first sliding hole 124 is provided on the first fixing plate, and a second sliding hole 125 corresponding to the first sliding hole 124 is provided on the second fixing plate. The adjusting member 140 includes a first adjusting plate 141, a second adjusting plate 142, and a third adjusting plate 143. The first adjustment plate 141 and the second adjustment plate 142 are positioned opposite each other, and the third adjustment plate 143 connects the first and second adjustment plates 141, 142. The angles between the third adjustment plate 143 and the first and second adjustment plates 141, 142 are all 90 degrees. With this arrangement, the adjusting member 140 is positioned parallel to the fixing member, and the third fixing plate 123 and the third adjustment plate 143 are also positioned parallel to each other. As a result, when the fastener 150 is inserted into the adjusting member 140 through the third retaining hole 146 on the third fixing plate 123 and abuts against the third fixing plate 123, the fastener abuts the third fixing plate 123 perpendicularly. When an external force drives the fastener 150 to rotate in the first or second rotational direction, the thrust of the fastener 150 is transmitted to the fixing member 120 to the greatest extent and evenly. The greater the thrust applied to the fixing member 120, the greater the reaction force generated, and the easier it is to push the adjusting member, thereby increasing or decreasing the distance between the third fixing plate 123 and the third adjusting plate 143, that is, increasing or decreasing the distance between the adjusting member and the fixing member. When the position of the tensioning pulley 110 needs to be adjusted, the fastener can be driven to rotate without applying a large external force, thereby completing the position adjustment of the tensioning pulley.

[0032] The first adjustment plate 141 is provided with a first limiting hole 144, and the second adjustment plate is provided with a second limiting hole 145 corresponding to the first limiting hole. The third adjustment plate is provided with an adjustment hole 146. The fastener 150 passes through the adjustment hole 146 and abuts against the fixing member 120. The adjustment member 140 is sleeved on the fixing member 120. The first limiting hole 144 and the second limiting hole 145 are arranged opposite each other. The positioning member 130 passes through the first limiting hole 144, the first sliding hole 124, the through hole 111, the second sliding hole 125, and the second limiting hole 145 in sequence, thereby connecting the tension pulley 110 to the adjusting member 140 and the fixing member 120 as a whole through the positioning member 130. The positioning member can slide within the first sliding hole 124 and the second sliding hole 125, driving the tension pulley 110 to slide.

[0033] In this embodiment, the positioning member 130 is movable along the first sliding hole 124 and the second sliding hole 125, thereby movably connecting the tension pulley 110 to the fixed member 120. Because the positioning member 130 is fixedly connected to the adjusting member 140, the first limiting hole 144 and the second limiting hole 145 provided on the adjusting member 140 are required to limit the movement of the positioning member 130. It will be understood that the lengths of the first limiting hole 144 and the second limiting hole 145 are necessarily smaller than the lengths of the first sliding hole 124 and the second sliding hole 125. In this way, the positioning member 130 is movable relative to the fixed member 120, while its position relative to the adjusting member 140 remains fixed.

[0034] To ensure that the positioning member is securely connected to the adjusting member 140, in an optional embodiment, the first end of the positioning member 130 includes a stopper 131 having a width greater than that of the first limiting hole 144, and the second end of the positioning member 130 includes an annular groove. The positioning member 130 is a positioning post, and the stopper 131 is wider than the positioning post and wider than the diameter of the first limiting hole 144. Therefore, when the positioning member 130 is inserted into the second limiting hole 144, the stopper 131 abuts against the first adjusting plate 141, preventing the positioning member 130 from moving further and dislodging from the first adjusting plate 141. The user can then engage the clamping member 133 in the annular groove 132. The diameter of the clamping member 133 is greater than the width of the positioning member 130. Once engaged, the clamping member 133 extends beyond the positioning member 130 and abuts against the outside of the second adjusting plate 142, preventing the positioning member 130 from being removed. As a result, the positioning member 130 can be fixedly connected to the adjusting member 140 , thereby fixing the tensioning pulley 110 to the adjusting member 140 .

[0035] Since the width of the limit block 131 is greater than the width of the positioning member 130, when the tension pulley 110 needs to be removed, the user can first remove the clamping member 133 from the annular groove 132. Then, the user can directly hold the limit block 131 and then drag the limit block 131. The movement of the limit block 131 drives the entire positioning member 130 to move out of the tension pulley 110, and then remove the tension pulley 110.

[0036] To facilitate user grip, in an optional embodiment, the stopper 131 is cylindrical, providing a better grip. Of course, the stopper 131 can also be in other shapes that are convenient to grip, such as spherical, ellipsoidal, oval, or a chamfered square, etc., without limitation, as long as the user can grip the stopper 131 and drag the positioning member 130 accordingly.

[0037] In this embodiment, the positioning member 130 and the limiting block 131 can be integrally formed to facilitate processing and production, or the positioning member 130 and the limiting block 131 can also be two separate structures, which is not limited here.

[0038] Of course, in other embodiments, the positioning member 130 may not be provided with the annular groove 132 but may be limited by other structures. For example, a blind hole may be provided on the positioning member 130, and the positioning member 130 may be limited by screwing a screw into the blind hole and abutting the second adjustment plate 142. This is not limited here.

[0039] In the belt tensioning mechanism 100 of the present invention, the positioning member 130 sequentially passes through the first sliding hole 124, the through hole 111, and the second sliding hole 125, thereby confining the tension pulley 110 between the first fixing plate 121 and the second fixing plate 122. It should be noted that because the tension pulley 110 is connected to a belt transmission mechanism and rotates with the belt, a certain distance must be reserved between the tension pulley 110 and the first and second fixing plates 121, 122 to ensure smooth rotation of the tension pulley 110. Therefore, the distance between the first and second fixing plates 121, 122 needs to be slightly greater than the height of the tension pulley 110. Furthermore, an annular buffer member is protruding from the end surface of the tension pulley 110. The tension pulley 110 is disposed between the first and second fixing plates. Providing the buffer member on the end surface reduces frictional loss during rotation, thereby increasing the service life of the tension pulley 110.

[0040] In an optional embodiment, the first sliding hole 124 and the second sliding hole 125 are arranged parallel and symmetrically to ensure that the positioning member 130 can be arranged perpendicularly relative to the horizontal plane, thereby ensuring smooth rotation of the tension pulley 110. In a preferred embodiment, the first sliding hole 124 and the second sliding hole 125 are of the same size, which facilitates standardized production. Of course, in other embodiments, the first sliding hole 124 and the second sliding hole 125 can have different sizes, for example, the first sliding hole 124 and the second sliding hole 125 can have different lengths, as long as the first sliding hole 124 and the second sliding hole 125 can stably retain the positioning member 130. This is not a limitation here.

[0041] In an optional embodiment, the diameter of the first limiting hole 144 and the second limiting hole 145 is not less than the width of the positioning member 130. Since the first limiting hole 144 and the second limiting hole 145 limit the positioning member 130, so that the positioning member 130 is fixedly connected to the adjustment key 140, the diameter of one of the first limiting hole 144 and the second limiting hole 145 is equal to the width of the positioning member 130, so that the positioning member 130 does not wobble and the position of the positioning member 130 is fixed relative to the adjustment member 140. The diameter of the other of the first limiting hole 144 and the second limiting hole 145 only needs to be not less than the width of the positioning member 130, so that the positioning member 130 can pass through the first limiting hole 144 and the second limiting hole 145 and be fixedly connected to the adjustment member 140. In a preferred embodiment, the diameters of the first limiting hole 144 and the second limiting hole 145 are equal to the width of the positioning member, which is more convenient for production and processing, and at the same time, the inner walls of the first limiting hole 144, the through hole 111, and the second limiting hole 145 are abutted against the positioning member 130. In this way, when the positioning member 130 passes through the first through hole 111, there is no gap between the positioning member 130 and the through hole 111, and the tension pulley 110 can be fixedly connected to the positioning member 130. There is no collision between the tension pulley 110 and the positioning member 130 that would affect the rotation of the tension pulley 110, so that the tension pulley 110 can rotate smoothly. Therefore, when the operating fastener is rotated toward the first rotation direction or the second rotation direction, causing the adjusting member 140 to move, during the movement of the adjusting member 140, the position of the adjusting member 140 relative to the positioning member 130 remains unchanged, and the reaction force of the fixing member 100 on the adjusting member 140 will not cause a large loss. The adjusting member 140 can move stably to adjust the distance between the third fixing plate 123 and the third adjustment plate 143, thereby adjusting the position of the tensioning pulley 110.

[0042] In an optional embodiment, the fastener 150 abuts against the inner wall of the adjustment hole 146. Therefore, during the rotation of the fastener 150, the fastener 150 does not wobble and is firmly connected to the adjustment hole 146, making the operation of rotating the fastener 150 more convenient and quick. At the same time, because the fastener does not wobble, the external force applied to the fastener 150 is less wasted, making it easier for the user to complete the position adjustment of the tensioning gear 110.

[0043] In an optional embodiment, the fastener 150 is a fastening screw, the inner wall of the adjustment hole 146 is provided with an internal thread, the fastening screw is provided with an external thread, and the fastener 150 is threadedly connected to the adjustment member 140. This arrangement makes the connection between the fastener 150 and the adjustment member 140 more stable. In other embodiments, the fastener can also have other structures, for example, the fastener can be a screw with multiple annular grooves, the inner wall of the adjustment hole can be provided with a card that engages with the groove, and the fastener can be engaged with the fastener. When the position needs to be adjusted, the fastener can also be rotated to adjust the position of the tension pulley 110. This is not limited here, as long as the structure of the fastener can support it to complete the position adjustment of the tension pulley 110.

[0044] In an optional embodiment, a notch 147 is provided on the third positioning member 130, and the third fixing plate 123 is bent outward and extended to be provided with a clamping plate 128. When the fastener 150 is manipulated to adjust the distance between the adjusting member 140 and the fixing member 120, the adjusting member 140 rotates around the contact point between the notch and the clamping plate as a fulcrum. The clamping plate 128 cooperates with the notch 147 to guide the fastener. In addition, during the rotation of the fastener, the clamping plate 128 is stuck in the notch 147. This structural design increases the structural strength of the adjusting member 140 and the fixing member 120 on the one hand, and increases the stability of the connection between the adjusting member 140 and the fixing member 120 on the other hand, making the distribution of the force between the two more balanced. At the same time, the clamping plate 128 can also play a limiting effect, which can prevent the adjusting member 140 from shaking during the movement.

[0045] In an optional embodiment, the belt tensioning mechanism 100 further includes at least one connecting member 160, and a connecting plate 126 is provided outwardly extending from one end of the first fixed plate 121 and / or one end of the second fixed plate 122, and at least one connecting hole 127 is provided on the connecting plate 126. The connecting member 160 passes through the connecting hole 127, and the connecting member 160 is used to connect the adjustment plate to the external frame.

[0046] The connecting plate 126 is used to install the fixing member 120 on the mounting surface of a corresponding device, such as the mounting surface of the rack mentioned above. In this embodiment, only one connecting plate 126 can be provided, and the connecting plate 126 can be provided at one end of the first fixing plate 121 or at one end of the second fixing plate 122. The connection relationship between the tensioning pulley 110 and the fixing member 120 and the adjusting member 140 of the present invention is stable. Therefore, only one connecting plate 126 is required to stably install the belt tensioning mechanism 100 on a mounting surface to complete the fixation of the fixing member. It is also understandable that there can also be two connecting plates 126, which are respectively provided at one end of the first fixing plate 121 and one end of the second fixing plate 122. The provision of two connecting plates 126 can make the force distribution of the belt tensioning mechanism 100 more balanced and make the connection between the fixing member and the mounting surface more stable. It is also understood that the connecting plate 126 may be provided with only one connecting hole 127 or multiple connecting holes 127. Providing one connecting hole 127 is sufficient to secure the connecting plate 126, but providing multiple connecting holes 127 can provide a more secure connection between the connecting plate 126 and the mounting surface. In one embodiment, each connecting plate 126 is provided with two connecting holes 127. Of course, the number of connecting holes 127 is also possible and is not limited here.

[0047] In an optional embodiment, the connecting member 160 may be a screw, a bolt, or the like, which is not limited here.

[0048] In an optional embodiment, the fixing member 120 , the positioning member 130 and the adjusting member 140 are all integrally formed structures, which are stable and convenient for large-scale production.

[0049] In some embodiments, a belt drive mechanism is also disclosed, comprising the aforementioned belt tensioning mechanism 100, a belt, and a driving pulley. The driving pulley is disposed opposite a tensioning pulley 110. The tensioning pulley, the driving pulley, and the belt are in a transmission connection. In some embodiments, the tensioning pulley 110 can be understood as a driven pulley whose position can be adjusted. To adjust the tension of the belt, the tensioning pulley can be manipulated to move along with the adjusting member 140, thereby tensioning the belt, the tensioning pulley 110, and the driving pulley.

[0050] 5 , in some embodiments, a belt transmission mechanism 200 is also disclosed, comprising the aforementioned belt tensioning mechanism 100, a belt 210, a first pulley, a second pulley, and a third pulley. The belt 210 is in driving connection with the belt tensioning mechanism 100, the first pulley, the second pulley, and the third pulley.

[0051] In an optional embodiment, the second pulley is arranged opposite to the tensioning pulley 110. Specifically, the second pulley can be a driving pulley or a driven pulley. When the second pulley is the driving pulley, the first pulley and the third pulley are both driven pulleys. When the second pulley is the driven pulley, one of the first pulley and the third pulley is the driving pulley. Preferably, the second pulley arranged opposite to the tensioning pulley 110 is the first driven pulley 230. The first pulley arranged between the second pulley 230 and the tensioning pulley 110 is the driving pulley 220. The third pulley is the second driven pulley 240. The driving pulley 220 rotates, driving the belt 210 to rotate, and then driving the first driven pulley 230, the second driven pulley 240 and the tensioning pulley 110 to rotate. The tensioning pulley 110 can move within the length range of the first slide hole 124 and the second slide hole 125 to ensure that the belt 210 is always tensioned.

[0052] In an alternative embodiment, the belt 210 has a smooth surface and a toothed surface 211. The toothed surface 211 is tooth-connected to the tension pulley 110. The first driven pulley 230 is disposed opposite the tension pulley 110. The toothed surface 211 is tooth-connected to the first driven pulley 230. The second driven pulley 240 and the driving pulley 210 are located between the tension pulley 110 and the first driven pulley 230. The second driven pulley 240 is connected to the smooth surface, while the driving pulley is tooth-connected to the toothed surface 211.

[0053] When the belt tensioning mechanism 100 of the present invention is installed on the belt transmission mechanism 200 of the present invention, the tensioning pulley 110 is connected to the belt transmission. If the belt cannot maintain tension between the driving pulley 220, the first driven pulley 230, the second driven pulley 240, and the tensioning pulley 110, the user needs to determine whether the belt is too loose or too tight. If the belt is too loose, the user can rotate the fastener 150 in the first rotation direction to increase the distance between the third fixing plate 123 and the third adjusting plate 143, that is, to move the adjusting member 140 in a direction away from the belt 210, and the tensioning pulley 110 and the adjusting member 140 move in the same direction. Since the belt 210 is transmission-connected to the tensioning pulley 110, when the tensioning pulley 110 moves, the belt 210 is also driven to tighten. When the belt is too loose, the user can rotate the fastener in the second rotation direction to decrease the distance between the third fixing plate 123 and the third adjusting plate, that is, to move the adjusting member 140 in a direction close to the belt 210, and the tensioning pulley 110 and the adjusting member 140 move in the same direction, so that the belt 210 can become loose.

[0054] Some embodiments of the present invention also disclose a processing device comprising a frame and the aforementioned belt drive mechanism 200. Because the fixing member is fixedly connected to the frame, the belt tensioning mechanism can be installed on the processing device. After installation, the adjusting member 140 is relatively located outside the processing device according to the structural configuration of the belt drive mechanism. The fastener is connected to the adjusting member. Therefore, when the tightness of the belt 210 needs to be adjusted, the tightness of the belt 210 can be adjusted by simply rotating the fastener without disassembling the processing device. This convenient and quick operation can reduce maintenance and financial costs for the user.

[0055] The above descriptions are merely preferred embodiments of the present invention and specifically describe the technical principles of the present invention. These descriptions are intended solely to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be devised by those skilled in the art without inventive effort, are intended to be included within the scope of protection of the present invention.

Claims

1. A belt tensioning mechanism, characterized in that: include: Tension pulleys, fixings, adjusting parts, fasteners; The fixing member is fixedly connected to the external frame, and the fixing member is movably connected to the adjusting member. The tension pulley is fixed on the adjusting member, and the fastening member passes through the adjusting member and abuts against the fixing member, so as to adjust the distance between the adjusting member and the fixing member; When the fastener is adjusted to move the adjusting member and change the distance between the adjusting member and the fixing member, the tension pulley moves in the same direction as the adjusting member.

2. The belt tensioning mechanism according to claim 1, characterized in that: A positioning member is also provided, the tension pulley is provided with a through hole, the through hole is located at the center of the tension pulley, the positioning member passes through the tension pulley from the through hole of the tension pulley, and the positioning member is fixedly connected to the adjusting member so that the tension pulley is fixedly connected to the positioning member.

3. The belt tensioning mechanism according to claim 2, characterized in that: The adjusting member is provided with a first limiting hole, the positioning member passes through the first limiting hole, the first end of the positioning member is provided with a limiting block, the second end of the positioning member is provided with an annular groove, and the width of the limiting block is greater than the aperture of the first limiting hole.

4. The belt tensioning mechanism according to claim 2, characterized in that: The fixing member is provided with a first sliding hole, allowing the positioning member to move in the first sliding hole, and the adjusting member is provided with a first limiting hole, and the positioning member passes through the first sliding hole and is fixedly connected to the first limiting hole; the first end of the positioning member is provided with a limiting block, and the aperture of the first limiting hole is not less than the width of the positioning member and is less than the width of the limiting block.

5. The belt tensioning mechanism according to claim 1, characterized in that: The fastener is a fastening screw, the adjusting member has an adjusting hole, the fastening screw passes through the adjusting hole and abuts against the fixing member, an inner wall of the adjusting hole is provided with an internal thread, the fastening screw is provided with an external thread, and the fastener is threadedly connected to the adjusting member.

6. The belt tensioning mechanism according to claim 1, characterized in that: The adjusting member comprises a first adjusting plate, a second adjusting plate and a third adjusting plate, wherein the first adjusting plate is arranged opposite to the second adjusting plate, the third adjusting plate connects the first adjusting plate and the second adjusting plate, the first adjusting plate is provided with a first limiting hole, the second adjusting plate is provided with a second limiting hole, and the third adjusting plate is provided with an adjusting hole; The fixing member also includes a first fixing plate, a second fixing plate and a third fixing plate, the first fixing plate is arranged opposite to the second fixing plate, the third fixing plate connects the first fixing plate and the second fixing plate, the first fixing plate is provided with a first sliding hole, and the second fixing plate is provided with a second sliding hole.

7. The belt tensioning mechanism according to claim 1 or 6, characterized in that: The adjusting member is concavely provided with a notch, and the fixing plate is convexly provided with a clamping plate. When the fastener is operated to adjust the distance between the adjusting member and the fixing member, the adjusting member rotates around the contact point between the notch and the clamping plate as a fulcrum.

8. The belt tensioning mechanism according to claim 1, characterized in that: The belt tensioning mechanism comprises a positioning member, The tension pulley is provided with a through hole. The fixing member comprises a first fixing plate and a second fixing plate which are arranged opposite to each other, the first fixing plate is provided with a first sliding hole, and the second fixing plate is provided with a second sliding hole corresponding to the first sliding hole. The adjusting member is movably sleeved on the fixing member, and the adjusting member is provided with a first limiting hole, a second limiting hole and an adjusting hole, and the first limiting hole and the second limiting hole are arranged opposite to each other. The positioning member passes through the first limiting hole, the first sliding hole, the through hole, the second sliding hole and the second limiting hole in sequence, so that the tensioning pulley is connected with the fixing member and the adjusting member. The fastener passes through the adjustment hole and abuts against the fixing member; When the fastener rotates along a first rotation direction or a second rotation direction opposite to the first rotation direction driven by an external force, the adjusting member moves relative to the fixing member under the reaction force of the fixing member, driving the positioning member to slide in the first sliding hole and the second sliding hole, thereby driving the tensioning pulley to move to a preset position.

9. A belt transmission mechanism, comprising the belt tensioning mechanism according to claim 1 to 8, characterized in that: Also includes a belt, a driving wheel, a first driven wheel and a second driven wheel; Wherein, the belt has a smooth surface and a toothed surface, The tooth surface is connected to the tensioning belt wheel teeth, The first driven wheel is arranged opposite to the tension pulley, and the tooth surface is connected to the teeth of the first driven wheel. The second driven wheel and the driving wheel are located between the tension pulley and the first driven wheel, the second driven wheel is connected to the smooth surface, and the driving wheel is connected to the teeth of the toothed surface.

10. A processing equipment, characterized in that: Comprising the belt transmission mechanism as claimed in claim 9.

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