Belt tensioner for a small case delivery device

Abstract

The utility model discloses a kind of belt tensioner of small box conveying device, including tensioning roller, mounting base, mounting base includes bottom plate, two side plates oppositely arranged on bottom plate, tensioning roller movably set between two side plates, the belt of small box conveying device passes between bottom plate and tensioning roller, tensioning roller is tensioned by moving downward;The upper end of two side plates is provided with connecting assembly, and two side plates are detachably fixedly connected to the side part body structure of small box conveying device by connecting assembly to be upward, to fix mounting base in the lower part of small box conveying device.The utility model discloses a kind of belt tensioner of small box conveying device, and technician can install belt tensioner to the lower part area of small box conveying device instead of two ends, to avoid being blocked, facilitate technician operation;Moreover, the device is independently installed, and it does not need to make any modification to small box conveying device, to reduce the actual installation cost of belt tensioner.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt tension adjustment technology, specifically to a belt tensioning device. Background Technology

[0002] The ITM fully open packaging unit is a fully open packaging unit manufactured by the Dutch ITM Group. Its rated production capacity is 120 packs / minute. The entire unit consists of five parts: a cartoning machine, a small box transparent paper packaging machine, a carton packaging machine, a cigarette carton transparent paper packaging machine, and a cigarette unloading machine. The small box conveyor, belonging to the cartoning machine, is located on the far left of the main unit. This device, driven by a motor and a flat belt, is mainly responsible for conveying and replenishing empty small boxes.

[0003] Currently, the tension adjustment of the belt in the small box conveyor (i.e., the conveyor belt device) is achieved through two M5 bolts. For example... Figure 5 As shown, the pulley is movably installed at the right end of the small box conveying device. There is one M5 bolt on each side of the small box conveying device, and the two M5 bolts are installed in the same way. The left end of the M5 bolt on the front side is rotatably limited to the front body structure of the small box conveying device (the M5 bolt can rotate freely around its own axis, but cannot be axially displaced), and the right end is threaded to the plate on the front side of the pulley (the front end of the pulley is rotatably connected to the plate).

[0004] In this way, technicians can tighten the belt by turning the M5 bolt, which will cause the M5 bolt to move to the right through a helical feed motion.

[0005] However, the above technical solutions still have the following drawbacks: 1. The premise for an M5 bolt to drive a pulley is that the pulley itself can move freely laterally. To achieve this, technicians must modify the small box conveying device, changing one of the pulleys to be able to move laterally, which is costly.

[0006] 2. Due to the limited length of the M5 bolt and its connection with the pulley for tensioning the belt, the M5 bolt can only be installed at the end of the small box conveyor. Furthermore, the internal components of the ITM fully open packaging unit are highly concentrated, and the two ends of the small box conveyor typically have small box pushing devices, small box dropping supports, and other structures. These structures often obstruct the outside of the M5 bolt at the end of the small box pushing device during installation, making it very inconvenient for technicians to tighten the M5 bolt. Utility Model Content

[0007] This utility model provides a belt tensioning device for a small box conveyor. Technicians can install the belt tensioning device in the lower area of ​​the small box conveyor rather than at both ends to avoid obstruction and facilitate operation. Moreover, this device can be installed independently without any modification to the small box conveyor, thereby reducing the actual installation cost of the belt tensioning device and solving the aforementioned technical problems.

[0008] The technical solution of this utility model to solve the above problems is: to provide a belt tensioning device for a small box conveyor, including a tensioning roller and a mounting base. The mounting base includes a base plate and two side plates disposed opposite to each other on the base plate. The tensioning roller is movably disposed between the two side plates. The belt of the small box conveyor passes between the base plate and the tensioning roller. The tensioning roller tensions the belt by moving downward. A connecting component is provided at the upper end of each of the two side plates. The two side plates are detachably and fixedly connected to the side body structure of the small box conveyor through the connecting component, so as to fix the mounting base to the lower part of the small box conveyor.

[0009] Furthermore, the connecting assembly includes a first fixing plate vertically fixed at the upper end of the side plate, a first mounting hole extending laterally through the upper end of the first fixing plate, a first bolt being provided at the first mounting hole, and the first bolt being threadedly fixed to the side body structure of the small box conveying device by passing laterally through the first mounting hole.

[0010] Furthermore, the connecting assembly also includes a second fixing plate that is horizontally fixed along the upper edge of the side plate. The second fixing plate has a second mounting hole that is vertically through it, and a second bolt is also provided at the second mounting hole. The second bolt passes vertically through the second mounting hole to be vertically threadedly fixed to the side frame structure of the small box conveying device.

[0011] Furthermore, it also includes a first guide roller and a second guide roller, both of which are rotatably disposed on the upper part of the mounting base, and the first guide roller and the second guide roller are respectively disposed on both sides of the tensioning roller, and both the first guide roller and the second guide roller are also disposed below the belt.

[0012] Furthermore, it also includes a swing connector. Both ends of the tension roller are rotatably provided with swing connectors, and each of the two swing connectors is rotatably connected to a side plate. The tension roller tensions the belt by rotating downward around the rotatable connection between the swing connector and the side plate.

[0013] Furthermore, each of the two side plates has a third mounting hole on its upper part for the roller shaft of the first guide roller to be rotatably inserted into, and the two third mounting holes are arranged opposite to each other. Each end of the first guide roller is inserted into a third mounting hole so as to be rotatably mounted on the upper part of the mounting base. One end of the swing connector is sleeved on the roller shaft of the first guide roller so as to be rotatably connected to the side plate, and the tension roller rotates downward around the first guide roller through the swing connector to tension the belt.

[0014] Furthermore, the upper part of both side plates is provided with a fourth mounting hole for the roller shaft of the second guide roller to be rotatably inserted, and the two fourth mounting holes are arranged opposite to each other. Each end of the second guide roller is inserted into a fourth mounting hole so as to be rotatably mounted on the upper part of the mounting base.

[0015] Furthermore, the swing connector includes a first plate and a second plate that are spliced ​​together. One end of the first plate has a fifth mounting hole for engaging with the roller shaft of the first guide roller. The second plate is assembled at the other end of the second plate. Grooves are also provided at the splicing end faces of the first plate and the second plate. When the first plate and the second plate are spliced ​​together, the two grooves are joined together to form a sixth mounting hole for the roller shaft of the tension roller to be rotatably inserted.

[0016] Furthermore, at least one side plate is provided with a limiting through hole that matches the movement trajectory of the tension roller. A third bolt is provided at the limiting through hole, and a threaded connection hole is provided at the end face of the tension roller shaft. The third bolt passes through the limiting through hole to engage with the threaded connection hole for threaded connection, thereby limiting the movement range of the tension roller.

[0017] The beneficial effects of this utility model are: The belt tensioning device of this utility model is a mechanism capable of independently tensioning belts. Its belt tensioning function does not change with the installation position and does not rely on the pulley of the small box conveyor itself. Technicians only need to install it at the lower part of the small box conveyor, not at the end position, and connect the tensioning roller to the mounting base from above the belt. The belt can then be tensioned by controlling the downward movement of the tensioning roller. The installation and operation of the entire belt tensioning device is convenient and simple, and no modifications are required to the original small box conveyor, resulting in low installation costs. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0019] Figure 1 This is a schematic diagram of the assembly structure of the belt tensioning device and the small box conveying device in this embodiment; Figure 2 This is a structural diagram of the belt tensioning device in this embodiment; Figure 3 This is an exploded view of the belt tensioning device in this embodiment; Figure 4 This is a schematic diagram illustrating the working principle of the belt tensioning device in this embodiment; Figure 5 This is a schematic diagram of the existing technology for adjusting the tension belt using M5 bolts. 1-Belt tensioning device, 11-Tensioning roller, 12-Mounting base, 13-First fixing plate, 14-First mounting hole, 15-Second fixing plate, 16-Second mounting hole, 17-First guide roller, 18-Second guide roller, 19-Swing connector; 121-Base plate, 122-Side plate, 123-Third mounting hole, 124-Fourth mounting hole, 125-Limiting through hole, 126-Third bolt; 191-First plate, 192-Second plate, 193-Fifth mounting hole, 194-Groove; 3-Small box conveyor device, 31-Belt. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The following will be based on Figures 1-4 The technical solution of this utility model will be explained in detail.

[0024] Please see Figure 1 and Figure 2 A belt tensioning device for a small box conveying device according to a specific embodiment of the present invention includes a tensioning roller 11 and a mounting base 12. The mounting base 12 includes a base plate 121 and two side plates 122 oppositely disposed on the base plate 121. The tensioning roller 11 is movably disposed between the two side plates 122. The belt of the small box conveying device passes between the base plate 121 and the tensioning roller 11. The tensioning roller 11 tensions the belt by moving downward. The upper ends of the two side plates 122 are provided with connecting components. The two side plates 122 are detachably and fixedly connected to the side body structure of the small box conveying device through the connecting components, so as to fix the mounting base 12 to the lower part of the small box conveying device.

[0025] Specifically, with Figure 2Taking the orientation shown as an example, in this embodiment, a set of connecting components includes a first fixing plate 13 and two second fixing plates 15. The first fixing plate 13 is vertically fixed in the middle position of the side plate 122 by ordinary bolts. The upper end of the first fixing plate 13 has two first mounting holes 14 that are horizontally opened through it. Each of the two first mounting holes 14 is equipped with a first bolt. The two second fixing plates 15 are horizontally fixed in the left and right sides of the upper edge of the side plate 122 by ordinary bolts. Each of the two second fixing plates 15 has a second mounting hole 16 that is vertically opened on it. Each of the two second mounting holes 16 is equipped with a second bolt.

[0026] In this embodiment, the relevant technicians can first place the mounting base 12 at the lower part of the small box conveying device, then press the tension roller 11 downward from above the belt between the two side plates 122 of the mounting base 12, and movably connect both ends of the tension roller 11 to one side plate 122. Then, let two first bolts pass through one first mounting hole 14 to be threadedly fixed to the side body structure of the small box conveying device laterally, and let a second bolt pass through one second mounting hole 16 to be threadedly connected to the side body structure of the small box conveying device vertically from the lower end face, so as to fix the mounting base 12 to the lower part of the small box conveying device, so that the belt of the small box conveying device can be tensioned by controlling the downward movement of the tension roller 11.

[0027] It should be noted that the threaded holes on the body structure of the small box conveyor, which correspond to the threaded connections of the first and second bolts, can be machined by tapping on the installation site.

[0028] In other embodiments, the through hole on the body structure of the small box conveying device may not be a threaded hole, but only a through hole drilled on site; technicians may additionally configure nut structures on the first bolt and the second bolt so that the first bolt can be clamped and fixed to the first fixing plate 13 with the nut structure, and the second bolt can be clamped and fixed to the second fixing plate 15 with the nut structure, thereby fixing the mounting base 12 to the lower part of the small box conveying device.

[0029] In other embodiments, the connecting component may be configured as only one first fixing plate 13 or two second fixing plates 15; in this embodiment, both a first fixing plate 13 and two second fixing plates 15 are configured to further improve the connection stability between the mounting base 12 and the side frame structure of the small box conveying device, and reduce the possibility of the mounting base 12 becoming loose.

[0030] Further, please refer to Figure 2 and Figure 4 ,by Figure 2Taking the orientation shown as an example, in this embodiment, a first guide roller 17 is provided on the right side of the tension roller 11 and a second guide roller 18 is provided on the left side. Both the first guide roller 17 and the second guide roller 18 are rotatably arranged on the upper part of the mounting base 12. The first guide roller 17 and the second guide roller 18 are also both located below the belt.

[0031] Furthermore, the first guide roller 17 and the second guide roller 18 are flush with each other in the height direction.

[0032] Thus, when the tension roller 11 is controlled to move downward to tension the belt, the first guide roller 17 and the second guide roller 18 cooperate to limit the belt on both sides of the tension roller 11. This ensures that the deformation of the belt when it is pulled downward by the tension roller 11 occurs only between the first guide roller 17 and the second guide roller 18, and prevents the belt from extending obliquely from the lower side of the tension roller 11 to the pulley when the tension roller 11 moves downward to tension the belt, thus ensuring stable belt transport.

[0033] Further, please refer to Figure 2 and Figure 3 ,by Figure 2 Taking the orientation shown as an example, in this embodiment, a third mounting hole 123 is provided on the upper right side of each of the two side plates 122. The first guide roller 17 is fixed on its roller shaft, and the front and rear ends of the roller shaft of the first guide roller 1711 are each inserted into a third mounting hole 123. The roller shaft of the first guide roller 17 can rotate freely around its own axis in the third mounting hole 123. A fourth mounting hole 124 is provided on the left side of each of the two side plates 122. The second guide roller 18 is fixed on its roller shaft, and the front and rear ends of the roller shaft of the second guide roller 18 are also each inserted into a fourth mounting hole 124. The roller shaft of the second guide roller 18 can also rotate freely around its own axis in the fourth mounting hole 124.

[0034] At the same time, with Figure 2 Taking the orientation shown as an example, each end of the first guide roller 17 has a swing connector 19. The swing connector 19 is a plate. The upper right end of the swing connector 19 has a fifth mounting hole 193, and the lower left end has a sixth mounting hole. Both swing connectors 19 are fitted onto the front and rear ends of the first guide roller 17 through the fifth mounting hole 193. The diameter of the fifth mounting hole 193 is larger than the diameter of the roller shaft of the first guide roller 17. The front and rear ends of the tension roller 11 are each inserted into the sixth mounting hole of a swing connector 19. The diameter of the sixth mounting hole is also larger than the diameter of the roller shaft of the tension roller 11, so that the tension roller 11 can rotate around the first guide roller 17 through the two swing connectors 19. This allows the tension roller 11 to rotate downward within the mounting base 12 to tension the belt of the small box conveyor.

[0035] It should be noted that in other embodiments, the first guide roller 17 may also be rotatably mounted on its roller shaft, and the second guide roller 18 may also be rotatably mounted on its roller shaft. However, both ends of the roller shaft of the first guide roller 17 are fixedly inserted into the third mounting hole 123, and both ends of the roller shaft of the second guide roller 18 are also fixedly inserted into the fourth mounting hole 124. The tension roller 11 may also be rotatably mounted on its roller shaft, and both ends of the roller shaft of the tension roller 11 are also fixedly inserted into the sixth mounting hole.

[0036] In addition, the two swing connectors 19 are still rotatably fitted onto the two ends of the roller shaft of the first guide roller 17 through the fifth mounting hole 193.

[0037] In other embodiments, a hinge rod can be horizontally fixed on the inner side of each of the two side plates 122, so that the two swing connectors 19 are respectively hinged to the hinge rod of one side plate 122 through the fifth mounting hole 193, so that each of the two swing connectors 19 is rotatably connected to one side plate 122; the tension roller 11 can be rotated downward around the hinge rod to tension the belt.

[0038] Further, please refer to Figure 3 In this embodiment, the swing connector 19 includes a first plate 191 and a second plate 192 that are spliced ​​together. One end of the first plate 191 is provided with a fifth mounting hole 193 for engaging with the roller shaft of the first guide roller 17. The second plate 192 is assembled at the other end of the second plate 192. Grooves 194 are also provided at the splicing end faces of the first plate 191 and the second plate 192. When the first plate 191 and the second plate 192 are spliced ​​together, the two grooves 194 are spliced ​​together to form a sixth mounting hole for the roller shaft of the tension roller 11 to be rotatably inserted.

[0039] To address this, technicians can first place the tension roller 11 horizontally above the belt, then press the tension roller 11 downwards to the lower end of the first plate 191, ensuring that each end of the tension roller 11 is accommodated by a groove 194. Then, the two plates are spliced ​​and fixed to the first plate 191 at the front and rear ends of the tension roller 11, respectively, so that the tension roller 11 can be installed into the mounting base 12.

[0040] It should be noted that: with Figure 3Taking the orientation shown as an example, in this embodiment, a threaded hole is provided at the lower left end of the splicing face of the first plate 191, and a through hole is provided at the splicing face of the second plate 192, and a common bolt is also provided at the through hole; thus, technicians can pass the common bolt through the through hole on the second plate 192 to engage with the threaded hole on the first plate 191 for threaded connection, so that the spliced ​​first plate 191 and the second plate 192142 are stably spliced ​​and fixedly connected, thereby limiting the tension roller 11.

[0041] Further, please refer to Figure 3 In order to more easily install the first guide roller 17 and the second guide roller 18 onto the mounting base 12, in this embodiment, the lower ends of the two side plates 122 are threadedly fixed to the base plate 121.

[0042] Further, please refer to Figure 3 In this embodiment, in order to enable external control of the tension roller 11 to swing around the first guide roller 17 and to ensure that the tension roller 11 can be locked at a specific swing position to maintain its tensioning effect on the belt, threaded connection holes are axially provided at both ends of the roller shaft of the tension roller 11. Limiting through holes 125 are correspondingly provided on both side plates 122. The limiting through holes 125 are arc-shaped through holes that correspond to a portion of the movement path of the tension roller 11. Simultaneously, a third bolt 126 is provided in each of the two limiting through holes 125.

[0043] To address this, technicians can pass each of the two third bolts 126 through a limiting through hole 125 to engage with the threaded connection holes at both ends of the tension roller 11 shaft, thereby restricting the rotation trajectory of the tension roller 11 around the first guide roller 17 to the arc-shaped trajectory corresponding to the limiting through hole 125, so as to prevent the tension roller 11 from over-tensioning the belt.

[0044] Furthermore, when the tension roller 11 is rotated to a specific position to adjust the belt tension to a specific value, the technician can further tighten the third bolt 126 so that the two third bolts 126 cooperate to clamp the entire mounting base 12, thereby restricting the tension roller 11 and preventing it from being pulled upward by the belt to return to its original position, thus ensuring its tensioning effect on the belt.

[0045] Furthermore, in this embodiment, the first bolt, the second bolt, and the third bolt 126 are all common bolts available on the market.

[0046] Anything not mentioned above applies to existing technologies.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A belt tensioning device for a small box conveyor, characterized in that, The device includes a tension roller (11) and a mounting base (12). The mounting base (12) includes a base plate (121) and two side plates (122) opposite to each other on the base plate (121). The tension roller (11) is movably disposed between the two side plates (122). The belt of the small box conveying device passes between the base plate (121) and the tension roller (11). The tension roller (11) tensions the belt by moving downward. The upper ends of the two side plates (122) are provided with connecting components. The two side plates (122) are detachably and fixedly connected to the side body structure of the small box conveying device through the connecting components to fix the mounting base (12) to the lower part of the small box conveying device.

2. The belt tensioner of claim 1, wherein The connecting assembly includes a first fixing plate (13) vertically fixed at the upper end of the side plate (122). The upper end of the first fixing plate (13) is provided with a first mounting hole (14) extending laterally. A first bolt is provided at the first mounting hole (14). The first bolt passes laterally through the first mounting hole (14) to be threadedly fixed to the side body structure of the small box conveying device.

3. The belt tensioner of claim 2, wherein The connecting assembly also includes a second fixing plate (15) that is horizontally fixed along the upper edge of the side plate (122). A second mounting hole (16) is vertically opened on the second fixing plate (15). A second bolt is also provided at the second mounting hole (16). The second bolt passes vertically through the second mounting hole (16) to be vertically threadedly connected to the side frame structure of the small box conveying device.

4. The belt tensioner of claim 1, wherein It also includes a first guide roller (17) and a second guide roller (18), both of which are rotatably disposed on the upper part of the mounting base (12), and the first guide roller (17) and the second guide roller (18) are respectively disposed on both sides of the tension roller (11), and the first guide roller (17) and the second guide roller (18) are also disposed below the belt.

5. The belt tensioner of claim 4, wherein the spring is a torsion spring. It also includes a swing connector (19), both ends of the tension roller (11) are rotatably provided with the swing connector (19), and each of the two swing connectors (19) is rotatably connected to one of the side plates (122). The tension roller (11) rotates downward around the rotatable connection between the swing connector (19) and the side plate (122) to tension the belt.

6. The belt tensioner of claim 5, wherein Both side plates (122) have a third mounting hole (123) on their upper part for the roller shaft of the first guide roller (17) to be rotatably inserted into. The two third mounting holes (123) are arranged opposite to each other. The two ends of the first guide roller (17) are each inserted into one of the third mounting holes (123) so as to be rotatably set on the upper part of the mounting base (12). One end of the swing connector (19) is sleeved on the roller shaft of the first guide roller (17) so as to be rotatably connected to the side plate (122) and to allow the tension roller (11) to rotate downward around the first guide roller (17) through the swing connector (19) to tension the belt.

7. The belt tensioning device as described in claim 4, characterized in that, The upper part of each of the two side plates (122) is provided with a fourth mounting hole (124) for the roller shaft of the second guide roller (18) to be rotatably inserted, and the two fourth mounting holes (124) are arranged opposite to each other. The two ends of the second guide roller (18) are each inserted into one of the fourth mounting holes (124) so ​​as to be rotatably disposed on the upper part of the mounting base (12).

8. The belt tensioner of claim 5, wherein, The swing connector (19) includes a first plate (191) and a second plate (192) that are spliced ​​together. One end of the first plate (191) is provided with a fifth mounting hole (193) for engaging with the roller shaft of the first guide roller (17). The second plate (192) is assembled at the other end of the second plate (192). The splicing end faces of the first plate (191) and the second plate (192) are also provided with grooves (194). When the first plate (191) and the second plate (192) are spliced ​​together, the two grooves (194) are spliced ​​together to form a sixth mounting hole for the roller shaft of the tension roller (11) to be rotatably inserted.

9. The belt tensioner of claim 1, wherein, At least one of the side plates (122) is provided with a limiting through hole (125) adapted to the movement trajectory of the tension roller (11). A third bolt (126) is provided at the limiting through hole (125). A threaded connection hole is also provided at the end face of the roller shaft of the tension roller (11). The third bolt (126) passes through the limiting through hole (125) to engage with the threaded connection hole for threaded connection, thereby limiting the movement range of the tension roller (11) in conjunction with the limiting through hole (125).

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