Tension adjustment mechanism for filling material conveying belt

Abstract

The utility model relates to the technical field of stuffing delivery, and disclose a stuffing conveyor belt's tensioning adjusting mechanism, including conveying dynamic band and side frame, conveying dynamic band one end surface is equipped with the adjusting roller, the inner surface of conveying dynamic band is equipped with the presser roller, and both ends of adjusting roller and presser roller are evenly connected with end rod, and the end rod circumferential surface is equipped with fixed plate, and the fixed plate one side at adjusting roller is equipped with adjusting module, and adjusting module includes link column, and one end of link column is fixed with the end rod circumferential surface, and the fixed plate surface is equipped with the compacting module. The utility model discloses adjusting module has realized the adjustment of adjusting roller height, and the rotary motion of threaded rod is converted into the linear lifting of moving block through the curved block inclined surface cooperation, makes the conveying belt to reach and keep the best tensioning state quickly, and the threaded rod in adjusting module mostly is in fixed block and moving block, and adjusting module sets up in side frame, can better prevent the stuffing residue such as flour, oil dirt and so on and block threaded rod.

Description

Technical Field

[0001] This utility model belongs to the field of filling conveying technology, and specifically relates to a tension adjustment mechanism for filling conveyor belts. Background Technology

[0002] A filling conveyor belt is a device specifically designed for transporting fillings containing oils, sugars, or other viscous ingredients in the food processing industry. It typically includes a molecularly stable conveyor belt, a mounting frame, and auxiliary rollers.

[0003] In the current food processing industry, filling conveyor belts are key equipment connecting the filling preparation and packaging processes, and the stability of their tension directly affects production efficiency and product quality.

[0004] However, existing tensioning mechanisms mostly adopt screw lifting or bolt sliding design. Traditional screw lifting adjustment is prone to wear due to direct pressure and results in short component lifespan. Secondly, traditional locking mechanisms rely on ordinary nuts for fastening, which are prone to loosening under the vibration environment generated by continuous equipment operation, causing the tension roller to shift position and causing problems such as conveyor belt deviation, slippage, or even detachment.

[0005] Meanwhile, existing tensioning mechanisms generally lack effective anti-deformation designs. When the adjusting rollers are raised, the conveyor belt is prone to upward deformation due to the upward force, especially in conditions such as filling conveying where a specific inclination angle needs to be maintained. This not only accelerates conveyor belt wear but also causes filling spillage, resulting in material waste and environmental pollution.

[0006] In addition, the screw threads of traditional adjustment mechanisms are easily clogged by flour, oil and other filling residues, making cleaning difficult. After long-term use, they are prone to rust and jamming, which greatly increases the equipment maintenance cost. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tension adjustment mechanism for filling conveyor belts.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a tension adjustment mechanism for a filling conveyor belt, comprising a conveyor belt and a side frame, wherein an adjustment roller is provided on the outer surface of one end of the conveyor belt, and a pressure roller is provided on the inner surface of the conveyor belt; both ends of the adjustment roller and both ends of the pressure roller are rotatably connected to end rods; a fixing plate is provided on the circumference of the end rods; an adjustment module is provided on one side of the fixing plate at the adjustment rollers; the adjustment module includes a connecting column, one end of which is fixed to the circumference of the end rods; and a pressing module is provided on the surface of the fixing plate.

[0009] Preferably, the adjustment module further includes: a fixed block, which is fixed to the inner wall of the side frame, and a curved block is attached to the inner wall of one end of the fixed block; a movable block, one side of the movable block is slidably connected to one side of the fixed block, and another curved block is attached to the inner wall of one end of the movable block; a threaded rod, one end of the threaded rod is threadedly connected to the curved block of the fixed block, and the other end of the threaded rod is rotatably connected to the inner wall of the curved block of the movable block; and an adjusting nut, the inner circumferential surface of the adjusting nut being threadedly connected to the end of the threaded rod near the fixed block.

[0010] Preferably, the circumference of the end rod is fixed to one end of the connecting column, the other end of the connecting column is fixed to one side of the clamping plate, and the moving block has a sliding groove on the side near the fixed plate, the inner wall of the sliding groove is slidably connected to both sides of the clamping plate.

[0011] Preferably, the clamping module includes: a π-shaped plate, the surface of which is slidably connected to the surface of the fixed plate; and an eccentric wheel, which is rotatably connected to the surface of the fixed plate.

[0012] Preferably, hollow arc pads are linearly arrayed and fixed on the side of the π-shaped plate near the end rod.

[0013] Preferably, the clamping module further includes: a lever arm, one end of which is fixed to the circumferential surface of the eccentric wheel; and an operating handle, one end of which is disposed at one end of the lever arm.

[0014] Preferably, one end of the operating handle is fixed with a fixed point component, and a limiting ring is fixed on the circumferential surface of the fixed point component. The circumferential surface of the limiting ring is slidably connected to the inner wall of the lever arm. One end of the limiting ring is fixed with a return spring, and one end of the return spring is fixed to the inner wall of the lever arm. A plurality of limiting holes are arranged in a circumferential array on one side of the fixing plate, and a fixed point component is nested in the inner wall of one of the limiting holes.

[0015] Preferably, a protective circular plate is fixed to one end of the operating handle.

[0016] In summary, this utility model has the following beneficial effects: 1. This utility model achieves the adjustment of the height of the adjusting roller through a wedge-shaped lifting mechanism composed of fixed blocks, moving blocks, curved blocks, and threaded rods included in the adjustment module. This mechanism converts the rotational motion of the threaded rod into the linear lifting of the moving block through the inclined surface of the curved block. It has high transmission efficiency and good self-locking performance, overcoming the problems of traditional screw lifting adjustment which is prone to wear and direct pressure, resulting in easy deformation and short service life. It enables the conveyor belt to quickly reach and maintain the optimal tension state. Moreover, most of the threaded rod in the adjustment module is located in the fixed block and the moving block, and the adjustment module is set in the side frame, which can effectively prevent flour, oil stains, and other filling residues from clogging the threaded rod. 2. This utility model prevents the conveyor belt from warping and deforming when tensioned by setting pressure rollers. When adjusted to the correct position, the π-shaped plate can be driven to press the fixed plate by rotating the eccentric wheel. The self-locking characteristic of the eccentric wheel is used to achieve a firm mechanical lock, which effectively resists the vibration during equipment operation, prevents the tension roller from shifting, and avoids problems such as conveyor belt deviation and slippage. 3. This utility model achieves rapid locking and releasing of the locked state through the integrated lever arm, operating handle, and quick positioning mechanism consisting of a fixed point component, a limiting ring, a return spring, and a limiting hole in the clamping module. The operator can easily complete the clamping and releasing actions using the operating handle. The return spring assists in positioning, and the limiting hole provides multiple fixed positions, ensuring the reliability and repeatability of the operation. The design of the protective circular plate increases operational safety, preventing hand pinching during pulling, adjustment, and release. The overall structure significantly reduces maintenance difficulty and labor intensity. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the adjustment module of this utility model; Figure 3 This is a sectional view of the side frame of this utility model; Figure 4 This is a schematic diagram of the pressure roller of this utility model; Figure 5 This is a schematic diagram of the connecting column of this utility model; Figure 6 This is a schematic diagram of the eccentric wheel of this utility model; Figure 7 This is a schematic diagram of the lever arm of this utility model; Figure 8 This is a cross-sectional view of the limiting ring of this utility model.

[0018] Figure label: 1. Conveyor belt; 101. Side frame; 2. Pressure roller; 201. End rod; 202. Adjusting roller; 203. Fixing plate; 3. Adjustment module; 301. Fixed block; 302. Moving block; 303. Threaded rod; 304. Curved block; 305. Adjusting nut; 306. Connecting column; 4. Pallet; 401. Slide rail; 5. Clamping module; 501. π-shaped plate; 502. Eccentric wheel; 503. Lever arm; 504. Operating handle; 6. Hollow arc pad; 7. Fixed point component; 701. Restricting ring; 702. Return spring; 703. Limiting hole; 8. Protective circular plate. Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0020] The specific embodiments of this utility model are described below with reference to the accompanying drawings: Example 1: refer to Figures 1-8 The tension adjustment mechanism of the filling conveyor belt includes a conveyor belt 1 and a side frame 101. An adjustment roller 202 is provided on the outer surface of one end of the conveyor belt 1, and a pressure roller 2 is provided on the inner surface of the conveyor belt 1. Both ends of the adjustment roller 202 and both ends of the pressure roller 2 are rotatably connected to end rods 201. A fixing plate 203 is provided on the circumference of the end rod 201. An adjustment module 3 is provided on one side of the fixing plate 203 at the adjustment roller 202. The adjustment module 3 includes a connecting column 306. One end of the connecting column 306 is fixed to the circumference of the end rod 201. A pressing module 5 is provided on the surface of the fixing plate 203.

[0021] Specifically, by setting up a linkage structure between the adjusting roller 202, the pressure roller 2 and its end rod 201 and the fixed plate 203, and in conjunction with the adjusting module 3 and the pressing module 5, a tensioning and anti-deformation system is formed. This allows the tension of the conveyor belt 1 to be adjusted by the adjusting roller 202, while the pressure roller 2 effectively suppresses the upward deformation of the conveyor belt during the tensioning process, thereby improving the overall stability and reliability of the conveyor belt operation.

[0022] The adjustment module 3 also includes: a fixed block 301, which is fixed to the inner wall of the side frame 101, and a curved block 304 is attached to the inner wall of one end of the fixed block 301; a movable block 302, which is slidably connected to one side of the fixed block 301, and another curved block 304 is attached to the inner wall of one end of the movable block 302; a threaded rod 303, which is threadedly connected to the curved block 304 of the fixed block 301 at one end, and rotatably connected to the inner wall of the curved block 304 of the movable block 302 at the other end; and an adjusting nut 305, which is threadedly connected to the end of the threaded rod 303 near the fixed block 301 on its inner circumferential surface.

[0023] The end rod 201 is fixed to one end of the connecting column 306, and the other end of the connecting column 306 is fixed to one side of the clamping plate 4. The moving block 302 has a sliding groove 401 on the side near the fixed plate 203, and the inner wall of the sliding groove 401 is slidably connected to both sides of the clamping plate 4.

[0024] Specifically, a precise, stable, and protected tension adjustment mechanism is achieved by adjusting the wedge mechanism consisting of a fixed block 301, a moving block 302, and a curved block 304 included in the adjustment module 3, as well as a threaded rod 303 and an adjusting nut 305. The moving block 302 is slidably connected to the clamping plate 4 of the connecting end rod 201 via a sliding groove 401. This design efficiently converts the rotational motion of the threaded rod 303 into the oblique movement of the moving block 302 and the linear displacement of the adjusting roller 202, thus achieving fine adjustment of the tension. The wedge mechanism has good self-locking properties and can effectively maintain the set position. At the same time, the main transmission components are built into the fixed block 301 and the moving block 302, reducing direct contact with contaminants such as dust and oil, reducing the risk of blockage and jamming, and improving the durability and ease of maintenance of the mechanism.

[0025] The clamping module 5 includes: a π-shaped plate 501, the surface of which is slidably connected to the surface of the fixed plate 203; and an eccentric wheel 502, which is rotatably connected to the surface of the fixed plate 203.

[0026] Hollow arc pads 6 are linearly arrayed and fixed on one side of the π-shaped plate 501 near the end rod 201.

[0027] The clamping module 5 also includes: a lever arm 503, one end of which is fixed to the circumference of the eccentric wheel 502; and an operating handle 504, one end of which is located at one end of the lever arm 503.

[0028] One end of the operating handle 504 is fixed with a fixed point component 7, and a limiting ring 701 is fixed on the circumference of the fixed point component 7. The circumference of the limiting ring 701 is slidably connected to the inner wall of the lever arm 503. One end of the limiting ring 701 is fixed with a return spring 702, and one end of the return spring 702 is fixed to the inner wall of the lever arm 503. A plurality of limiting holes 703 are arranged in a circular array on one side of the fixing plate 203, and the fixed point component 7 is nested in the inner wall of one limiting hole 703.

[0029] A protective circular plate 8 is fixed to one end of the operating handle 504.

[0030] Specifically, the clamping module 5 includes a π-shaped plate 501, an eccentric wheel 502, a lever arm 503, an operating handle 504, and a quick-positioning locking mechanism composed of a fixed-point component 7, a limiting ring 701, a return spring 702, and a limiting hole 703. Combined with a protective circular plate 8, this achieves a convenient, reliable, and highly safe quick clamping and releasing function. Pulling the operating handle 504 drives the eccentric wheel 502 via the lever arm 503, utilizing its eccentric characteristics to quickly clamp or release the π-shaped plate 501, achieving a secure lock on the fixed plate 203. The fixed-point component 7, under the action of the return spring 702, can be embedded into different limiting holes 703, providing multiple clear locking positions to prevent accidental loosening. The hollow arc pad 6 enhances the contact fit and cushioning effect during clamping. The protective circular plate 8 effectively prevents accidental pinching of hands during operation, significantly improving the safety and user-friendliness of the equipment operation.

[0031] Example 2: refer to Figures 1-8 The staff used the structure disclosed in this utility model in the filling conveying section of a food production line; A food-grade PU conveyor belt, 800 mm wide, became loose due to long-term operation, causing the red bean paste filling to slip on the conveyor section at a 15-degree incline. The staff immediately operated and maintained the tension adjustment mechanism of this utility model.

[0032] The mechanism is installed within a 304 stainless steel side frame below the drive roller of the conveyor belt. The operator first grasps the ABS operating handle of the clamping module and pulls it outwards by approximately 10 mm, causing the fixed component to disengage from the limiting hole on the side of the fixed plate, overcoming the force of the stainless steel return spring. Then, the operator pulls the operating handle upwards, rotating the power arm to release the cast aluminum eccentric wheel from its clamping position on the π-shaped plate. Next, a 24 mm open-end wrench is used to rotate the adjusting nut of the adjusting module counterclockwise, driving the 16 mm diameter threaded rod to rotate. Through the inclined engagement of two sets of carburized steel curved blocks, the moving block descends vertically under the guidance of the fixed block, causing the adjusting roller connected by the connecting column to move downwards. At this point, the tension of the conveyor belt gradually decreases.

[0033] After repeated fine-tuning, the operator rotates the adjusting nut clockwise to raise the moving block, stopping the adjustment when the conveyor belt tension reaches its optimal state. Then, the operator presses down on the operating handle, causing the eccentric wheel to push the π-shaped plate to press against the fixed plate. The linearly arranged silicone hollow arc pads generate a uniform clamping force, while the fixed parts automatically engage with the corresponding limit holes under the action of the return spring to complete the mechanical interlock.

[0034] The entire adjustment process took only three minutes, after which the conveyor belt returned to stable operation. The adjustment mechanism was completely enclosed within the side frame, effectively preventing the intrusion of flour and oil. During the subsequent eight hours of continuous production, the pressure rollers continuously suppressed conveyor belt deformation, and the eccentric wheel self-locking mechanism remained stable, ensuring the stability and continuity of filling delivery.

[0035] The working principle of this utility model: Step 1: When it is necessary to adjust the tension of the conveyor belt 1, the operator first operates the adjustment module 3. To ensure safety, first confirm that the clamping module 5 is in the loose state.

[0036] The operator uses a tool to rotate the adjusting nut 305 in the adjusting module 3. The rotation of the adjusting nut 305 drives the threaded rod 303 to rotate. Since one end of the threaded rod 303 is threadedly connected to the curved block 304 in the fixed block 301, and the other end is rotatably connected to the curved block 304 in the moving block 302, the rotation of the threaded rod 303 forces the two curved blocks 304 to move relative to each other. The inclined surfaces of the curved blocks 304 cooperate to form a highly efficient wedge-shaped transmission mechanism.

[0037] Under the action of the inclined plane, the moving block 302 produces a linear motion in the vertical direction relative to the fixed block 301. Rotating the adjusting nut 305 clockwise will lift the moving block 302 upward; rotating it counterclockwise will lower the moving block 302 downward.

[0038] The moving block 302 is slidably connected to the clamping plate 4 via the sliding groove 401 on it, transmitting vertical motion to the clamping plate 4. The clamping plate 4 is fixed to the end rod 201 via the connecting column 306, thereby ultimately driving the adjusting roller 202 to move up and down synchronously.

[0039] The displacement of the adjusting roller 202 changes its relative position with other rollers on the conveyor belt, thereby precisely adjusting the tension of the conveyor belt 1. The wedge mechanism has a self-locking characteristic, which allows it to maintain its position after adjustment, and the main transmission components are built into the block, effectively preventing the intrusion of contaminants such as flour and oil.

[0040] Step 2: Once the tension is adjusted to the optimal state, the position of the adjusting roller 202 must be locked immediately to prevent it from loosening due to vibration during operation. The staff should first ensure that the adjusting roller 202 is in the target position.

[0041] The operator then grasps the operating handle 504 and pulls it outward, causing the fixed part 7 to move away from the original limiting hole 703, and then pulls the power arm 503 downward. The power arm 503 is fixedly connected to the eccentric wheel 502, thus driving the eccentric wheel 502 to rotate.

[0042] During rotation, the cam surface of the eccentric wheel 502 presses the π-shaped plate 501 outward. Under pressure, the π-shaped plate 501 moves downward along the surface of the fixed plate 203, and the linear array of hollow arc pads 6 on it is then tightly pressed onto the fixed plate 203, generating a huge frictional force, thereby firmly locking the entire fixed plate 203 and its connected adjusting roller 202 mechanism in the current position.

[0043] During the clamping process, the fixed point 7, which is fixed to the operating handle 504, will move downwards. When the clamping is in place, the operator releases the operating handle 504. Under the action of the return spring 702, the fixed point 7 will automatically spring into one of the limiting holes 703 in the circumferential array on the side of the fixing plate 203, providing clear position feedback and mechanical interlocking, effectively preventing the eccentric wheel 502 from rotating and loosening due to vibration. The protective circular plate 8 effectively prevents the operator's hand from being pinched during operation.

[0044] Step 3: Throughout the adjustment and operation process, the pressure roller 2 located on the inner surface of the conveyor belt 1 continues to function. When the adjusting roller 202 is lifted upward to tension the conveyor belt, the conveyor belt will tend to move upward. At this time, the pressure roller 2 provides downward pressure through the end rods 201 and the fixed plate 203 at both ends, effectively suppressing the upward deformation of the conveyor belt, ensuring the flatness and stability of the belt surface when conveying filling at an incline, and preventing the filling from spilling.

[0045] When readjustment is required: the operator only needs to pull the operating handle 504 outward again to overcome the elastic force of the reset spring 702 and make the fixed part 7 exit from the limit hole 703.

[0046] Continue to pull the operating handle 504 upwards, and the eccentric wheel 502 will be rotated to the loosened position through the lever arm 503. The π-shaped plate 501 will release the pressure on the fixed plate 203 under its own rebound or slight external force. At this time, the adjustment module 3 can be operated again to perform a new round of tension adjustment.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tension adjustment mechanism for a filling conveyor belt, comprising a conveyor belt (1) and a side frame (101), characterized in that: An adjusting roller (202) is provided on the outer surface of one end of the conveyor belt (1), and a pressure roller (2) is provided on the inner surface of the conveyor belt (1). Both ends of the adjusting roller (202) and both ends of the pressure roller (2) are rotatably connected to end rods (201). A fixing plate (203) is provided on the circumference of the end rod (201). An adjusting module (3) is provided on one side of the fixing plate (203) at the adjusting roller (202). The adjusting module (3) includes a connecting column (306). One end of the connecting column (306) is fixed to the circumference of the end rod (201). A pressing module (5) is provided on the surface of the fixing plate (203).

2. The tension adjustment mechanism for the filling conveyor belt according to claim 1, characterized in that: The adjustment module (3) further includes: Fixed block (301), the fixed block (301) is fixed to the inner wall of the side frame (101), and a curved block (304) is attached to the inner wall of one end of the fixed block (301). A movable block (302) is slidably connected to a fixed block (301) on one side, and another curved block (304) is attached to the inner wall of one end of the movable block (302). A threaded rod (303) is provided, one end of which is threadedly connected to the curved block (304) of the fixed block (301), and the other end of which is rotatably connected to the inner wall of the curved block (304) of the moving block (302). Adjusting nut (305), the inner circumferential surface of the adjusting nut (305) is threaded to one end of the threaded rod (303) near the fixed block (301).

3. The tension adjustment mechanism for the filling conveyor belt according to claim 2, characterized in that: The end rod (201) is fixed to one end of the connecting column (306), and the other end of the connecting column (306) is fixed to one side of the card plate (4). The moving block (302) has a sliding groove (401) on the side near the fixed plate (203), and the inner wall of the sliding groove (401) is slidably connected to both sides of the card plate (4).

4. The tension adjustment mechanism for the filling conveyor belt according to claim 1, characterized in that: The clamping module (5) includes: A π-shaped plate (501) is provided, the surface of which is slidably connected to the surface of the fixed plate (203). An eccentric wheel (502) is rotatably connected to the surface of the fixed plate (203).

5. The tension adjustment mechanism for the filling conveyor belt according to claim 4, characterized in that: Hollow arc pads (6) are linearly arrayed and fixed on one side of the π-shaped plate (501) near the end rod (201).

6. The tension adjustment mechanism for the filling conveyor belt according to claim 4, characterized in that: The clamping module (5) also includes: A lever arm (503), one end of which is fixed to the circumferential surface of the eccentric wheel (502); An operating handle (504) is provided at one end of the lever arm (503).

7. The tension adjustment mechanism for the filling conveyor belt according to claim 6, characterized in that: One end of the operating handle (504) is fixed with a fixed point component (7), and a limiting ring (701) is fixed on the circumference of the fixed point component (7). The circumference of the limiting ring (701) is slidably connected to the inner wall of the lever arm (503). One end of the limiting ring (701) is fixed with a return spring (702), and one end of the return spring (702) is fixed to the inner wall of the lever arm (503). A plurality of limiting holes (703) are arranged in a circular array on one side of the fixing plate (203), and a fixed point component (7) is nested in the inner wall of one of the limiting holes (703).

8. The tension adjustment mechanism for the filling conveyor belt according to claim 6, characterized in that: A protective circular plate (8) is fixed to one end of the operating handle (504).

Images