Sheet feeding limiting device

By designing a sheet feeding limit device including a fixed plate, a connecting plate and a limit roller, the problems of sheet lifting and workers' injuries in the seedling plate compression molding machine are solved, and the stable feeding of the sheet and the safety protection of workers are achieved.

CN222645327UActive Publication Date: 2025-03-21DEHUI HUIFA STREET DONGSHENG AGRICULTURAL MACHINERY FACTORY
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Patent Information

Application Number
CN202421399698.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-03-21
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

The existing seedling plate compression molding machines lack appropriate limiting devices, which leads to the sheet being easily raised when feeding, and workers are easily scratched by exposed gears when adjusting the position of the sheet.

Method used

A sheet feed limiting device is designed, including a first fixing plate, a second fixing plate, an intermediate connecting plate, a first limiting roller and a second limiting roller. Through the synergy of these components, lateral limiting and suppression of the sheet is achieved, preventing the sheet from being offset and raised.

Benefits of technology

Effectively prevent the sheet from rising and deflecting during feeding, reducing damage to workers, and improving the safety and efficiency of feeding.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a sheet feeding limiting device which comprises a first fixing plate, a second fixing plate, a middle connecting plate, a first limiting roller and a second limiting roller. The first fixing plate and the second fixing plate are arranged at the two ends of the middle connecting plate in parallel. The bearings at the two ends of the first limiting roller are located in the first mounting grooves respectively, two limiting wheels are arranged on the first limiting roller, the bearings at the two ends of the second limiting roller are located in the second mounting grooves respectively, and a gap is formed between the second limiting roller and the middle connecting plate. According to the utility model, a plurality of limiting rollers are combined for limiting, so that sheets are prevented from tilting in the feeding process; and the limiting wheel and the limiting block are matched in an auxiliary mode to prevent the sheets from transversely deviating, the feeding effect is guaranteed, meanwhile, the positions of the sheets do not need to be adjusted through manual operation, and harm to workers is avoided. The sheet feeding device can be movably connected, is not limited to a seedling tray compression molding machine, can also be suitable for processing equipment for feeding various sheets, and is wide in application range.
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Description

Technical Field

[0001] The utility model provides a sheet material feeding limiting device. Background Art

[0002] The seedling tray is mainly used for raising rice seedlings and is an indispensable tool for the rice planting industry. The seedling tray is usually made of polyvinyl chloride sheets, polypropylene sheets, and polyester sheets, and is formed by a seedling tray compression molding machine. Polyvinyl chloride sheets, polypropylene sheets, and polyester sheets are generally coiled materials, which are fed from one end of the seedling tray compression molding machine and formed into a seedling tray after being stamped by the compression molding machine. However, the feed end of the existing seedling tray compression molding machine lacks a suitable limit device for the sheet raw materials. The feeding speed of the seedling tray compression molding machine is extremely fast, and the sheet is easy to warp when entering the seedling tray compression molding machine; on the seedling tray compression molding machine, the gears of the feed transmission chain at the connection with the feed end are exposed, and the speed is very high during operation. If the sheet is tilted, the workers need to press the sheet with their hands, which can easily be scratched by the exposed gears, causing unnecessary injuries. Summary of the invention

[0003] In order to solve the above technical problems, the utility model provides a sheet feeding limiting device, comprising a first fixed plate, a second fixed plate, an intermediate connecting plate, a first limiting roller, and a second limiting roller; the first fixed plate and the second fixed plate are arranged in parallel at both ends of the intermediate connecting plate; bearings are respectively provided at both ends of the roller shafts of the first limiting roller and the second limiting roller; first mounting grooves are respectively provided on the opposite surfaces of the feeding ends of the first fixed plate and the second fixed plate, the bearings at both ends of the first limiting roller are respectively located in the first mounting grooves, the first limiting roller is provided with two limiting wheels, and the limiting wheel sleeve is on the first limiting roller; second mounting grooves are respectively provided on the opposite surfaces of the discharging ends of the first fixed plate and the second fixed plate, the second mounting groove is arranged on the upper part of the intermediate connecting plate, the bearings at both ends of the second limiting roller are respectively located in the second mounting grooves, and a gap is provided between the second limiting roller and the intermediate connecting plate.

[0004] Furthermore, the outer sides of the first fixing plate and the second fixing plate are respectively provided with connecting ears, the connecting ears are provided with vertical through holes, and screws are provided in the through holes.

[0005] Furthermore, the limiting wheel is provided with a tightening threaded hole connected to the interior, and the tightening bolt is arranged in the tightening threaded hole.

[0006] Furthermore, the middle connecting plate is provided with a transverse through hole, the transverse through hole is provided with two parallel limit blocks, the limit blocks are provided with a connecting screw, and the connecting screw passes through the transverse through hole and is fixed by a nut.

[0007] Furthermore, a third limiting roller is provided below the first limiting roller, and both ends of the third limiting roller are pivotally connected to bearing seats fixed at the lower parts of the first fixing plate and the second fixing plate through bearings.

[0008] In another embodiment, a third limiting roller is provided below the first limiting roller, third mounting grooves are provided on opposite surfaces of the first fixing plate and the second fixing plate, and bearings at both ends of the third limiting roller are respectively located in the third mounting grooves.

[0009] The working principle of this utility model:

[0010] The utility model provides a sheet material feeding limiting device, wherein a first fixed plate, a second fixed plate and an intermediate connecting plate constitute a limiting device body, two ends of a first limiting roller are mounted in first mounting grooves of the first fixed plate and the second fixed plate, and the first limiting roller is located at the feeding end of the limiting device; two ends of a second limiting roller are mounted in the second mounting groove, and the second limiting roller is located at the discharging end of the limiting device; the first mounting groove and the second mounting groove are opened at the upper parts, and the first limiting roller and the second limiting roller are movably connected to the first mounting groove and the second mounting groove; the second limiting roller is arranged above the intermediate connecting plate, and a gap is reserved between the second limiting roller and the intermediate connecting plate.

[0011] The sheet is stretched out from the reel, bypasses the first limiting roller, passes between the two limiting wheels, is inserted into the gap between the second limiting roller and the middle connecting plate, and is sent to the seedling tray compression molding machine for compression molding; the first limiting roller plays the role of receiving the sheet, and the two limiting wheels on the first limiting roller play the role of lateral limiting to prevent the sheet from deflecting; the second limiting roller plays a role of suppressing the sheet to prevent the sheet from warping.

[0012] The sheet material feeding limiting device is connected to the machine feeding end frame through the connecting ears on both sides of the first fixing plate and the second fixing plate; the screw rod passes through the vertical through hole on the connecting ear, connects to the reserved mounting hole on the machine frame, and is fastened by the nut to fix the utility model on the machine frame. The height of the utility model can be adjusted by adjusting the fixing position of the screw rod and the vertical through hole.

[0013] The two limiting wheels can slide horizontally on the first limiting roller. After adjusting the two limiting wheels to a suitable spacing according to the width of the sheet, the tightening bolt is screwed so that the tightening bolt passes through the tightening threaded hole and tightens the first limiting roller to fix the position of the limiting wheels.

[0014] The transverse through hole on the intermediate connecting plate is used to adjust the transverse position of the two limit blocks. After the two limit blocks are adjusted to a suitable spacing according to the width of the sheet, they are fixed by a nut at the other end of the connecting screw. After the sheet passes between the two limit wheels on the first limit roller, it is further limited by the two limit blocks to ensure that the sheet does not deviate when feeding.

[0015] After the sheet is stretched out from the reel, it first bypasses the third limiting roller, then reversely bypasses the first limiting roller, and finally inserts into the gap between the second limiting roller and the middle connecting plate. The sheet wraps around the third limiting roller and the first limiting roller in an S shape. During the feeding process, once the speed of releasing the sheet under the action of rotational inertia is greater than the speed of sheet feeding, excess sheet will be released from the coil. At this time, the third limiting roller below the first limiting roller is used to assist in limiting the position of the sheet to prevent the excess length of the sheet from shifting and affecting the feeding effect.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a sheet material feeding limiting device, which prevents the sheet material from tilting up during the feeding process by limiting the position of multiple limiting rollers; the limiting wheel and the limiting block cooperate to prevent the sheet material from lateral deviation, thereby ensuring the feeding effect and avoiding manual adjustment of the sheet material position to avoid injury to workers. The utility model can be flexibly connected, not only limited to the seedling tray compression molding machine, but also applicable to a variety of sheet material feeding processing equipment, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0019] Figure 2 This is a schematic diagram of feeding in Example 1 of the utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of Embodiment 2 of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present utility model;

[0023] Figure 6 This is a schematic diagram of the structure of Embodiment 5 of the present utility model;

[0024] Figure 7 This is a schematic diagram of the structure of Embodiment 6 of the present utility model;

[0025] Figure 8 This is a schematic diagram of feeding in Example 6 of the utility model;

[0026] 1. First fixed plate 2, second fixed plate 3, middle connecting plate 4, first limiting roller 5, second limiting roller 6, bearing 7, first mounting groove 8, limiting wheel 9, second mounting groove 10, sheet 11, reel 12, connecting ear 13, vertical through hole 14, screw 15, tightening bolt 16, transverse through hole 17, limiting block 18, connecting screw 19, third limiting roller 20, bearing seat 21, third mounting groove. DETAILED DESCRIPTION

[0027] Embodiment 1,

[0028] See also Figure 1 , 2 As shown, the utility model provides a sheet feeding limiting device, comprising a first fixed plate 1, a second fixed plate 2, an intermediate connecting plate 3, a first limiting roller 4, and a second limiting roller 5; the first fixed plate 1 and the second fixed plate 2 are arranged in parallel at both ends of the intermediate connecting plate 3; bearings 6 are respectively provided at both ends of the roller shafts of the first limiting roller 4 and the second limiting roller 5; first mounting grooves 7 are respectively provided on the opposite surfaces of the feeding ends of the first fixed plate 1 and the second fixed plate 2, the bearings 6 at both ends of the first limiting roller 4 are respectively located in the first mounting grooves 7, two limiting wheels 8 are provided on the first limiting roller 4, and the limiting wheels 8 are sleeved on the first limiting roller 4; second mounting grooves 9 are respectively provided on the opposite surfaces of the discharging ends of the first fixed plate 1 and the second fixed plate 2, the second mounting grooves 9 are arranged on the upper part of the intermediate connecting plate 3, the bearings 6 at both ends of the second limiting roller 5 are respectively located in the second mounting grooves 9, and a gap is provided between the second limiting roller 5 and the intermediate connecting plate 3.

[0029] The first fixed plate 1, the second fixed plate 2 and the middle connecting plate 3 constitute the limiting device body, the two ends of the first limiting roller 4 are installed in the first mounting groove 7 of the first fixed plate 1 and the second fixed plate 2, and the first limiting roller 4 is located at the feeding end of the limiting device; the two ends of the second limiting roller 5 are installed in the second mounting groove 9, and the second limiting roller 5 is located at the discharging end of the limiting device; the first mounting groove 7 and the second mounting groove 9 are opened at the top, the first limiting roller 4 and the second limiting roller 5 are movably connected with the first mounting groove 7 and the second mounting groove 9, and are inserted from the upper opening of the mounting groove, and the bearings fall into the mounting groove; the second limiting roller 5 is arranged above the middle connecting plate 3, and a gap is reserved between the second limiting roller 5 and the middle connecting plate 3.

[0030] The sheet 10 is stretched out from the reel 11, bypasses the first limiting roller 4, passes between the two limiting wheels 8, is inserted into the gap between the second limiting roller 5 and the middle connecting plate 3, and is sent to the seedling tray compression molding machine for compression molding; the first limiting roller 4 plays the role of receiving the sheet 10, and the two limiting wheels 8 on the first limiting roller 4 play the role of lateral limiting to prevent the sheet 10 from deflecting; the second limiting roller 5 plays a suppressing role on the sheet 10 to prevent the sheet 10 from warping.

[0031] Embodiment 2,

[0032] See also Figure 3 As shown, this embodiment provides a sheet material feeding limit device. On the basis of Embodiment 1, the outer sides of the first fixed plate 1 and the second fixed plate 2 are respectively provided with connecting ears 12, and the connecting ears 12 are provided with vertical through holes 13, and screws 14 are provided in the through holes.

[0033] The sheet material feeding limiting device is connected to the machine feeding end frame through the connecting ears 12 on both sides of the first fixing plate 1 and the second fixing plate 2; the screw 14 passes through the vertical through hole 13 on the connecting ear 12, is connected to the reserved mounting hole on the machine frame, and is fastened by a nut to fix the utility model on the machine frame. The height of the utility model can be adjusted by adjusting the fixing position of the screw 14 and the vertical through hole 13.

[0034] Embodiment 3,

[0035] See also Figure 4 As shown, this embodiment provides a sheet material feeding limiting device. On the basis of Embodiment 1 or 2, the limiting wheel 8 is provided with a tightening threaded hole connected to the interior, and the tightening bolt 15 is arranged in the tightening threaded hole.

[0036] The two limiting wheels 8 can slide horizontally on the first limiting roller 4. After adjusting the two limiting wheels 8 to a suitable spacing according to the width of the sheet 10, screw the tightening bolt 15 so that the tightening bolt 15 passes through the tightening threaded hole and tightens the first limiting roller 4 to fix the position of the limiting wheels 8.

[0037] Embodiment 4,

[0038] See also Figure 5 As shown, this embodiment provides a sheet material feeding limit device. On the basis of Embodiment 1, 2 or 3, a transverse through hole 16 is provided on the intermediate connecting plate 3, two parallel limit blocks 17 are provided on the transverse through hole 16, and a connecting screw 18 is provided on the limit block 17. The connecting screw 18 passes through the transverse through hole 16 and is fixed by a nut.

[0039] The transverse through hole 16 on the intermediate connecting plate 3 is used to adjust the transverse position of the two limit blocks 17. After the two limit blocks 17 are adjusted to a suitable spacing according to the width of the sheet 10, they are fixed by a nut at the other end of the connecting screw 18. After the sheet 10 passes between the two limit wheels 8 on the first limit roller 4, it is further limited by the two limit blocks 17 to ensure that the sheet 10 does not deviate when feeding.

[0040] Embodiment 5,

[0041] See also Figure 6As shown, this embodiment provides a sheet feed limiting device. On the basis of embodiment 1 or 2 or 3 or 4, a third limiting roller 19 is provided below the first limiting roller 4, and both ends of the third limiting roller 19 are pivotally connected to the bearing seat 20 fixed at the lower part of the first fixed plate 1 and the second fixed plate 2 through bearings 6.

[0042] Embodiment 6,

[0043] See also Figure 7 As shown, this embodiment provides a sheet feed limiting device. On the basis of Embodiment 1 or 2 or 3 or 4, a third limiting roller 19 is provided below the first limiting roller 4, and third mounting grooves 21 are respectively provided on the opposite surfaces of the first fixed plate 1 and the second fixed plate 2, and the bearings 6 at both ends of the third limiting roller 19 are respectively located in the third mounting grooves 21.

[0044] See also Figure 8 As shown, after the sheet 10 is stretched out from the reel 11, it first bypasses the third limiting roller 19, then bypasses the first limiting roller 4 in the opposite direction, and finally inserts into the gap between the second limiting roller 5 and the middle connecting plate 3. The sheet 10 is wrapped around the third limiting roller 19 and the first limiting roller 4 in an S shape. During the feeding process, once the speed of releasing the sheet 10 under the action of rotational inertia is greater than the speed of feeding the sheet 10, excess sheet 10 will be released from the coil. At this time, the third limiting roller 19 below the first limiting roller 4 is used to assist in limiting the position of the sheet 10 to prevent the excess length of the sheet 10 from shifting and affecting the feeding effect.

Claims

1. A sheet material feeding limiting device, characterized in that: It includes a first fixed plate, a second fixed plate, an intermediate connecting plate, a first limiting roller, and a second limiting roller; the first fixed plate and the second fixed plate are arranged in parallel at both ends of the intermediate connecting plate; bearings are respectively provided at both ends of the roller shafts of the first limiting roller and the second limiting roller; first mounting grooves are respectively provided on the opposite surfaces of the feeding ends of the first fixed plate and the second fixed plate, the bearings at both ends of the first limiting roller are respectively located in the first mounting grooves, and two limiting wheels are provided on the first limiting roller; second mounting grooves are respectively provided on the opposite surfaces of the discharging ends of the first fixed plate and the second fixed plate, the second mounting groove is arranged on the upper part of the intermediate connecting plate, the bearings at both ends of the second limiting roller are respectively located in the second mounting grooves, and a gap is provided between the second limiting roller and the intermediate connecting plate.

2. A sheet material feeding limiting device according to claim 1, characterized in that: The outer sides of the first fixing plate and the second fixing plate are respectively provided with connecting ears, and the connecting ears are provided with vertical through holes, and screws are provided in the through holes.

3. A sheet material feeding limiting device according to claim 1, characterized in that: The limiting wheel is provided with a tightening threaded hole communicated with the interior, and the tightening bolt is arranged in the tightening threaded hole.

4. A sheet material feeding limiting device according to claim 1, characterized in that: The middle connecting plate is provided with a transverse through hole, on which two parallel limit blocks are arranged, on which connecting screws are arranged, and the connecting screws pass through the transverse through hole and are fixed by nuts.

5. A sheet material feeding limiting device according to claim 1, characterized in that: A third limiting roller is provided below the first limiting roller, and two ends of the third limiting roller are pivotally connected to bearing seats fixed at the lower parts of the first fixing plate and the second fixing plate through bearings.

6. A sheet material feeding limiting device according to claim 1, characterized in that: A third limiting roller is provided below the first limiting roller, third mounting grooves are provided on opposite surfaces of the first fixing plate and the second fixing plate, and bearings at both ends of the third limiting roller are respectively located in the third mounting grooves.