Precise feeding machine capable of conveniently adjusting loosening distance

Abstract

The utility model discloses a precise feeder convenient to adjust loosening spacing, which comprises a shell, an upper roller, a lower roller, a lifting seat and a lifting mechanism, the lower roller is rotatably connected onto the shell, the upper roller is rotatably connected onto the lifting seat, the lifting seat is driven by the lifting mechanism to move up and down to enable the upper roller to move close to or far away from the lower roller, and the lifting mechanism comprises a motor, an adjusting rod and a sleeve. The motor is arranged on the shell, the sleeve is arranged on the lifting seat, the adjusting rod is connected with the motor and the sleeve, the adjusting rod is driven by the motor to rotate, and the sleeve is driven to move up and down when the adjusting rod rotates, so that the lifting seat is driven to move up and down to enable the upper roller to move close to or away from the lower roller. The lifting mechanism is provided with the motor, the adjusting rod and the sleeve, the adjusting rod is driven by the motor to rotate, the sleeve is driven to move up and down when the adjusting rod rotates to enable the upper roller to move to be close to or far away from the lower roller, and the moving distance of the sleeve is controlled by the rotating amplitude of the adjusting rod, so that the sleeve is high in moving precision, wide in adjustable range and flexible in adjustment.

Description

Technical Field

[0001] This utility model relates to the field of automatic feeding equipment technology, and in particular to a precision feeder that facilitates adjustment of the release distance. Background Technology

[0002] An automatic feeding device is a apparatus used for conveying materials. Existing automatic feeding devices include a housing, an upper roller, a lower roller, a lifting base, and a lifting mechanism. The lower roller is rotatably connected to the housing, and the upper roller is rotatably connected to the lifting base. The lifting base is driven up and down by the lifting mechanism, causing the upper roller to move closer to or away from the lower roller. The lifting mechanism includes a motor, a rotating shaft, and a cam. The motor is located on the housing, the rotating shaft is located above the lifting base and is driven by the motor, and the cam is located on the rotating shaft and rotates with the shaft, causing the lifting base to move up and down. Existing automatic feeding devices use a cam to drive the upper roller up and down. However, due to the low adjustment precision and limited adjustable range of the cam, the adjustment precision and adjustable range of the upper roller are also low. Utility Model Content

[0003] The purpose of this invention is to provide a precision feeder that facilitates adjustment of the relaxation distance, thereby solving the problems of low adjustment accuracy and limited adjustable range in existing automatic feeding equipment that uses a cam to drive the upper roller up and down.

[0004] This utility model is achieved through the following technical solution:

[0005] A precision feeder with adjustable release distance includes a housing, an upper roller, a lower roller, a lifting seat, and a lifting mechanism. The lower roller is rotatably connected to the housing, and the upper roller is rotatably connected to the lifting seat. The lifting seat is driven up and down by the lifting mechanism to move the upper roller closer to or away from the lower roller. The lifting mechanism includes a motor, an adjusting rod, and a sleeve. The motor is located on the housing, and the sleeve is located on the lifting seat. The adjusting rod is connected to both the motor and the sleeve. The adjusting rod is driven to rotate by the motor. When the adjusting rod rotates, it drives the sleeve to move up and down, thereby driving the lifting seat to move up and down, causing the upper roller to move closer to or away from the lower roller.

[0006] Furthermore, the outer casing has an assembly cavity, in which the upper roller, the lower roller, and the lifting seat are housed. The lifting mechanism also includes an upper connecting seat, which is located on the top of the outer casing and partially extends into the assembly cavity to be slidably connected to the sleeve. The upper connecting seat has an upper cavity for accommodating the adjusting rod. The motor is located on the top of the upper connecting seat and its output shaft extends into the upper cavity to be connected to the adjusting rod.

[0007] Furthermore, the outer wall of the adjusting rod is provided with an outer flange, which divides the upper cavity into an upper transmission cavity and a lower transmission cavity arranged vertically. The upper transmission cavity is located at the top, and the lower transmission cavity is located at the bottom. A ball bearing passing through the adjusting rod is provided in the upper transmission cavity, and a tapered bearing passing through the adjusting rod is provided in the lower transmission cavity.

[0008] Furthermore, the adjusting rod has a socket for inserting the motor output shaft, and a hydraulic tensioning sleeve is provided in the socket and fitted on the motor output shaft. The hydraulic tensioning sleeve is tightly fitted with the motor output shaft and the adjusting rod respectively, and the hydraulic tensioning sleeve has a stop ring that abuts against the top of the adjusting rod.

[0009] Furthermore, the bottom of the upper connecting seat is provided with an insert ring surrounding the adjusting rod. The sleeve and the adjusting rod together form an annular groove for the insert ring to be inserted. The insert ring abuts against the sleeve and the adjusting rod respectively. A sealing groove is provided on the outside of the insert ring, and a sealing ring is provided in the sealing groove.

[0010] Furthermore, the sleeve has a lower cavity for accommodating the adjusting rod. The lower cavity extends vertically and the lower section of the cavity wall protrudes inward, dividing the lower cavity into an upper relief cavity and a lower threaded cavity. The adjusting rod is partially accommodated in the lower threaded cavity and is threadedly connected to the sleeve in the lower threaded cavity. The adjusting rod is partially accommodated in the upper relief cavity and surrounds the sleeve to form the annular groove.

[0011] Furthermore, the lifting seat has an assembly groove and a clearance hole. The assembly groove opens downwards, and the clearance hole is located at the top of the lifting seat and communicates with the assembly groove. The upper roller extends horizontally and is accommodated in the assembly groove. The lifting mechanism also includes a lower connecting seat, which is accommodated in the assembly groove. Part of the lower connecting seat spans the clearance hole and is connected to the lifting seat, while part extends into the clearance hole and is connected to the sleeve.

[0012] Furthermore, the length direction of the upper roller is defined as the left-right direction, and the lower connecting seat includes a left connecting seat, a middle connecting seat, a right connecting seat and a connecting shaft. The left connecting seat, the middle connecting seat and the right connecting seat are arranged sequentially from left to right and are rotatably connected to the connecting shaft respectively. The left connecting seat and the right connecting seat are respectively connected to the lifting seat, and the middle connecting seat extends into the clearance hole and is connected to the sleeve.

[0013] Furthermore, the upper connecting seat is provided with an oil inlet channel and an oil return channel communicating with the upper cavity, the adjusting rod is provided with a vertical guide channel communicating with the lower transmission cavity, the connecting shaft has a horizontal guide channel, the middle connecting seat has a middle connecting cavity communicating with the horizontal guide channel and the vertical guide channel respectively, the left connecting seat has a left connecting cavity communicating with the horizontal guide channel, and the right connecting seat has a right connecting cavity communicating with the horizontal guide channel.

[0014] Furthermore, the outer shell is rotatably connected with a driving tooth and a driven tooth that mesh with each other. The driving tooth is axially connected to one end of the lower roller, and the driven tooth is slidably connected to one end of the upper roller. One of the upper roller and the driven tooth is provided with a guide groove, and the other of the two is provided with a guide block that slidably engages with the guide groove.

[0015] The advantage of this technical solution is that by configuring the lifting mechanism into a motor, an adjusting rod, and a sleeve, the adjusting rod is driven to rotate by the motor. When the adjusting rod rotates, it drives the sleeve to move up and down, causing the upper roller to move closer to or away from the lower roller. Since the moving distance of the sleeve is controlled by the rotation amplitude of the adjusting rod, the sleeve has high moving accuracy, a wide adjustable range, and flexible adjustment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a perspective view of the precision feeder disclosed in the embodiment, which facilitates adjustment of the relaxation distance;

[0019] Figure 2 This is a top view of the precision feeder with adjustable release spacing disclosed in the embodiment;

[0020] Figure 3 yes Figure 2 Sectional view at point AA;

[0021] Figure 4 yes Figure 3 A magnified view of a section at point C;

[0022] Figure 5 yes Figure 4 A magnified view of a section at point D;

[0023] Figure 6 yes Figure 2 Sectional view at point BB;

[0024] Figure 7 yes Figure 6 A magnified view of a section at point E in the middle;

[0025] Figure 8This is a front view of the precision feeder with adjustable relaxation spacing disclosed in the embodiment;

[0026] Figure 9 yes Figure 8 A magnified view of the area at FF;

[0027] Figure 10 This is a partial exploded view of the precision feeder with adjustable relaxation spacing disclosed in the embodiment;

[0028] Figure 11 yes Figure 10 A magnified view of a section at point G in the middle;

[0029] Figure 12 This is a perspective view of the sleeve in the embodiment. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example: Figure 1-12 As shown, the precision feeder with adjustable release distance includes a housing 1, an upper roller 2, a lower roller 3, a lifting seat 4, and a lifting mechanism 5. The lower roller 3 is rotatably connected to the housing 1, and the upper roller 2 is rotatably connected to the lifting seat 4. The lifting seat 4 is driven up and down by the lifting mechanism 5 to move the upper roller 2 closer to or away from the lower roller 3. The lifting mechanism 5 includes a motor 501, an adjusting rod 502, and a sleeve 503. The motor 501 is located on the housing 1, and the sleeve 503 is located on the lifting seat 4. The adjusting rod 502 is connected to both the motor 501 and the sleeve 503. The adjusting rod 502 is driven to rotate by the motor 501. When the adjusting rod 502 rotates, it drives the sleeve 503 to move up and down, thereby driving the lifting seat 4 to move up and down, causing the upper roller 2 to move closer to or away from the lower roller 3. The direction of movement of the sleeve 503 is controlled by the direction of rotation of the adjusting rod 502, and the range of movement of the sleeve 503 is controlled by the range of rotation of the adjusting rod 502. The larger the range of rotation of the adjusting rod 502, the larger the range of movement of the sleeve 503; the smaller the range of rotation of the adjusting rod 502, the smaller the range of movement of the sleeve 503. Specifically, the sleeve 503 is made of copper and is threadedly connected to the adjusting rod 502.

[0032] This embodiment provides a precision feeder that facilitates adjustment of the relaxation distance, solving the problem of low adjustment accuracy and limited adjustable range in existing automatic feeding equipment that uses a cam to drive the upper roller up and down. The main improvement is achieved by configuring the lifting mechanism 5 as a motor 501, an adjusting rod 502, and a sleeve 503. The adjusting rod 502 is driven to rotate by the motor 501. When the adjusting rod 502 rotates, it drives the sleeve 503 to move up and down, causing the upper roller 2 to move closer to or further away from the lower roller 3. Since the moving distance of the sleeve 503 is controlled by the rotation amplitude of the adjusting rod 502, the sleeve 503 achieves high moving accuracy, a wide adjustable range, and flexible adjustment.

[0033] In this embodiment of the invention, the outer shell 1 has an assembly cavity 101, in which the upper roller 2, lower roller 3, and lifting seat 4 are housed. The lifting mechanism 5 further includes an upper connecting seat 504, which is located at the top of the outer shell 1 and partially extends into the assembly cavity 101, slidably connected to the sleeve 503. The upper connecting seat 504 has an upper cavity 505 for accommodating the adjusting rod 502. The motor 501 is located at the top of the upper connecting seat 504, and its output shaft extends into the upper cavity 505 and is connected to the adjusting rod 502. This arrangement, by configuring an upper connecting seat 504 at the top of the outer shell 1 that partially extends into the assembly cavity 101 and is slidably connected to the sleeve 503, and by having an upper cavity 505 for accommodating the adjusting rod 502 and supplying power to the motor 501's output shaft, ensures a stable and compact assembly of the motor 501, the adjusting rod 502, and the sleeve 503.

[0034] In this embodiment of the invention, the outer wall of the adjusting rod 502 is provided with an outer flange 506, which divides the upper cavity 505 into an upper transmission cavity 507 and a lower transmission cavity 508, which are arranged vertically. The upper transmission cavity 507 is located higher, and the lower transmission cavity 508 is located lower. A ball bearing 509 passing through the adjusting rod 502 is provided in the upper transmission cavity 507, and a tapered bearing 510 passing through the adjusting rod 502 is provided in the lower transmission cavity 508. This arrangement, by placing the ball bearing 509 passing through the adjusting rod 502 in the upper transmission cavity 507, ensures smooth rotation of the adjusting rod 502 driven by the motor 501, and allows for fine-tuning of the rotation amplitude and high rotational accuracy. Simultaneously, by placing the tapered bearing 510 passing through the adjusting rod 502 in the lower transmission cavity 508, the assembly of the adjusting rod 502 and the upper connecting seat 504 is stable, preventing the adjusting rod 502 from swaying in the vertical plane during rotation and improving the rotational accuracy of the adjusting rod 502.

[0035] In this embodiment of the invention, the adjusting rod 502 has a socket (not shown in the figure) for inserting the output shaft of the motor 501. A hydraulic tensioning sleeve 511, fitted onto the output shaft of the motor 501, is provided within the socket. The hydraulic tensioning sleeve 511 is tightly fitted to both the output shaft of the motor 501 and the adjusting rod 502. The hydraulic tensioning sleeve 511 has a stop ring (not shown in the figure) that abuts against the top of the adjusting rod 502. This arrangement, by configuring a socket for inserting the output shaft of the motor 501 on the adjusting rod 502 and fitting a hydraulic tensioning sleeve 511 within the socket, ensures a tight fit between the adjusting rod 502 and the motor 501, resulting in high rotational accuracy.

[0036] In this embodiment of the invention, the bottom of the upper connecting seat 504 is provided with an insert ring 512 surrounding the adjusting rod 502. The sleeve 503 and the adjusting rod 502 together form an annular groove 513 for the insert ring 512 to be inserted. The insert ring 512 abuts against the sleeve 503 and the adjusting rod 502 respectively. A sealing groove (not shown in the figure) is provided on the outside of the insert ring 512, and a sealing ring 514 is provided in the sealing groove. The above arrangement, by configuring the insert ring 512 on the upper connecting seat 504 and configuring the annular groove 513 for the insert ring 512 to be inserted between the sleeve 503 and the adjusting rod 502, and by abutting the sleeve 503 and the adjusting rod 502 respectively, ensures that the sleeve 503 and the upper connecting seat 504 are tightly assembled and move smoothly.

[0037] In this embodiment of the invention, the sleeve 503 has a lower cavity 515 for accommodating the adjusting rod 502. The lower cavity 515 extends vertically, and the lower section of the cavity wall protrudes inward, dividing the lower cavity 515 into an upper clearance cavity 516 and a lower threaded cavity 517. The adjusting rod 502 is partially accommodated in the lower threaded cavity 517 and is threadedly connected to the sleeve 503 in the lower threaded cavity 517. The adjusting rod 502 is partially accommodated in the upper clearance cavity 516 and forms an annular groove 513 with the sleeve 503. By configuring the lower cavity 515 into a lower threaded cavity 517 threadedly connected to the adjusting rod 502 and an upper clearance cavity 516 forming an annular groove 513 with the adjusting rod 502, the sleeve 503 moves smoothly and with high precision.

[0038] In this embodiment of the invention, the lifting seat 4 has an assembly groove 401 and a clearance hole 402. The assembly groove 401 opens downwards, and the clearance hole 402 is located at the top of the lifting seat 4 and communicates with the assembly groove 401. The upper roller 2 extends horizontally and is accommodated within the assembly groove 401. The lifting mechanism 5 also includes a lower connecting seat 518, which is accommodated within the assembly groove 401. Part of the lower connecting seat 518 spans the clearance hole 402 and is connected to the lifting seat 4, while part extends into the clearance hole 402 and is connected to the sleeve 503. This arrangement, by configuring a lower connecting seat 518 within the assembly groove 401 that partially spans the clearance hole 402 and is connected to the lifting seat 4, and partially extends into the clearance hole 402 and is connected to the sleeve 503, ensures a stable connection between the sleeve 503 and the lifting seat 4.

[0039] In this embodiment of the utility model, the length direction of the upper roller 2 is defined as the left-right direction. The lower connecting seat 518 includes a left connecting seat 519, a middle connecting seat 520, a right connecting seat 521, and a connecting shaft 522. The left connecting seat 519, the middle connecting seat 520, and the right connecting seat 521 are arranged sequentially from left to right and are rotatably connected to the connecting shaft 522 respectively. The left connecting seat 519 and the right connecting seat 521 are respectively connected to the lifting seat 4. The middle connecting seat 520 extends into the clearance hole 402 and is connected to the sleeve 503. The above configuration involves configuring the lower connecting seat 518 into a left connecting seat 519, a middle connecting seat 520, a right connecting seat 521, and a connecting shaft 522. The left connecting seat 519, the middle connecting seat 520, and the right connecting seat 521 are rotatably connected to the connecting shaft 522, and the left connecting seat 519 and the right connecting seat 521 are connected to the lifting seat 4. The middle connecting seat 520 extends into the clearance hole 402 and is connected to the sleeve 503, thus making the connection between the sleeve 503 and the lifting seat 4 stable.

[0040] In this embodiment of the invention, the upper connecting seat 504 is provided with an oil inlet channel 523 and an oil return channel 524 communicating with the upper cavity 505; the adjusting rod 502 is provided with a vertical guide channel 525 communicating with the lower transmission cavity 508; the sleeve 503 has a lower cavity 515 communicating with the vertical guide channel 525; the connecting shaft 522 has a horizontal guide channel 527; the middle connecting seat 520 has a middle connecting cavity 500 communicating with the lower cavity 515 and the horizontal guide channel 527 respectively; the left connecting seat 519 has a left connecting cavity (not shown in the figure) communicating with the horizontal guide channel 527; and the right connecting seat 521 has a right connecting cavity (not shown in the figure) communicating with the horizontal guide channel 527. This arrangement allows the hydraulic oil to circulate within the lifting mechanism 5, resulting in a reasonable and compact flow path.

[0041] In this embodiment of the invention, a driving tooth 6 and a driven tooth 7 are rotatably connected to the outer casing 1. The driving tooth 6 is axially connected to one end of the lower roller 3, and the driven tooth 7 is slidably connected to one end of the upper roller 2. The driven tooth 7 is provided with a guide groove 701, and the upper roller 2 is provided with a guide block 201 that slidably engages with the guide groove 701. This arrangement, by configuring the driving tooth 6, which is axially connected to one end of the lower roller 3, and the driven tooth 7, which is slidably connected to one end of the upper roller 2, on the outer casing 1, allows the upper roller 2 and the lower roller 3 to move synchronously to convey materials. It also prevents the driven tooth 7 from moving when the upper roller 2 moves up and down relative to the lower roller 3, thus avoiding wear on the driven tooth 7 and affecting accuracy.

[0042] In other embodiments, the driven tooth 7 is provided with a guide block 201, and the upper roller 2 is provided with a guide groove 701 that slides with the guide block 201.

[0043] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0044] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered as protected by this utility model.

Claims

1. A precision feeder with adjustable release distance, comprising a housing (1), an upper roller (2), a lower roller (3), a lifting seat (4), and a lifting mechanism (5), wherein the lower roller (3) is rotatably connected to the housing (1), the upper roller (2) is rotatably connected to the lifting seat (4), and the lifting seat (4) is driven up and down by the lifting mechanism (5) to move the upper roller (2) closer to or further away from the lower roller (3), characterized in that, The lifting mechanism (5) includes a motor (501), an adjusting rod (502), and a sleeve (503). The motor (501) is mounted on the outer shell (1), and the sleeve (503) is mounted on the lifting seat (4). The adjusting rod (502) is connected to the motor (501) and the sleeve (503) respectively. The adjusting rod (502) is driven to rotate by the motor (501). When the adjusting rod (502) rotates, it drives the sleeve (503) to move up and down, thereby driving the lifting seat (4) to move up and down so that the upper roller (2) moves closer to or away from the lower roller (3).

2. The precision feeder with easily adjustable release interval according to claim 1, characterized in that, The outer shell (1) has an assembly cavity (101), and the upper roller (2), the lower roller (3) and the lifting seat (4) are housed in the assembly cavity (101); The lifting mechanism (5) further includes an upper connecting seat (504), which is located on the top of the outer shell (1) and partially extends into the assembly cavity (101) and is slidably connected to the sleeve (503). The upper connecting seat (504) has an upper cavity (505) for accommodating the adjusting rod (502). The motor (501) is located on the top of the upper connecting seat (504) and its output shaft extends into the upper cavity (505) and is connected to the adjusting rod (502).

3. The precision feeder with easily adjustable release interval according to claim 2, characterized in that, The outer wall of the adjusting rod (502) is provided with an outer flange (506), which divides the upper cavity (505) into an upper transmission cavity (507) and a lower transmission cavity (508) arranged vertically. The upper transmission cavity (507) is located at the top, and the lower transmission cavity (508) is located at the bottom. The upper transmission cavity (507) is provided with a ball bearing (509) that passes through the adjusting rod (502), and the lower transmission cavity (508) is provided with a tapered bearing (510) that passes through the adjusting rod (502).

4. The precision feeder with easily adjustable release gap according to claim 1, characterized in that, The adjusting rod (502) has a socket for inserting the output shaft of the motor (501). The socket is provided with a hydraulic tensioning sleeve (511) sleeved on the output shaft of the motor (501). The hydraulic tensioning sleeve (511) is tightly fitted to the output shaft of the motor (501) and the adjusting rod (502). The hydraulic tensioning sleeve (511) has a stop ring that abuts against the top of the adjusting rod (502).

5. The precision feeder with easily adjustable release interval according to claim 2, characterized in that, The bottom of the upper connecting seat (504) is provided with an insert ring (512) surrounding the adjusting rod (502). The sleeve (503) and the adjusting rod (502) together form an annular groove (513) for the insert ring (512) to be inserted. The insert ring (512) abuts against the sleeve (503) and the adjusting rod (502) respectively. A sealing groove is provided on the outside of the insert ring (512), and a sealing ring (514) is provided in the sealing groove.

6. The precision feeder with easily adjustable release gap according to claim 5, characterized in that, The sleeve (503) has a lower cavity (515) for accommodating the adjusting rod (502). The lower cavity (515) extends vertically and the lower section of the cavity wall protrudes inward, dividing the lower cavity (515) into an upper relief cavity (516) and a lower threaded cavity (517). The adjusting rod (502) is partially accommodated in the lower threaded cavity (517) and is threadedly connected to the sleeve (503) in the lower threaded cavity (517). The adjusting rod (502) is partially accommodated in the upper relief cavity (516) and surrounds the sleeve (503) to form the annular groove (513).

7. The precision feeder with easily adjustable release interval according to claim 2, characterized in that, The lifting seat (4) has an assembly groove (401) and a clearance hole (402). The assembly groove (401) opens downwards, and the clearance hole (402) is located at the top of the lifting seat (4) and communicates with the assembly groove (401). The upper roller (2) extends horizontally and is accommodated in the assembly groove (401). The lifting mechanism (5) further includes a lower connecting seat (518), which is housed in the assembly groove (401). The lower connecting seat (518) partially spans the relief hole (402) and is connected to the lifting seat (4), and partially extends into the relief hole (402) and is connected to the sleeve (503).

8. The precision feeder with easily adjustable release gap according to claim 7, characterized in that, The length direction of the upper roller (2) is defined as the left-right direction. The lower connecting seat (518) includes a left connecting seat (519), a middle connecting seat (520), a right connecting seat (521), and a connecting shaft (522). The left connecting seat (519), the middle connecting seat (520), and the right connecting seat (521) are arranged sequentially from left to right and are rotatably connected to the connecting shaft (522). The left connecting seat (519) and the right connecting seat (521) are respectively connected to the lifting seat (4). The middle connecting seat (520) extends into the clearance hole (402) and is connected to the sleeve (503).

9. The precision feeder with easily adjustable release gap according to claim 8, characterized in that, The upper connecting seat (504) is provided with an oil inlet channel (523) and an oil return channel (524) communicating with the upper cavity (505). The adjusting rod (502) is provided with a vertical guide channel (525) communicating with the upper cavity (505). The connecting shaft (522) has a horizontal guide channel (527). The middle connecting seat (520) has a middle connecting cavity (500) communicating with the horizontal guide channel (527) and the vertical guide channel (525) respectively. The left connecting seat (519) has a left connecting cavity communicating with the horizontal guide channel (527). The right connecting seat (521) has a right connecting cavity communicating with the horizontal guide channel (527).

10. The precision feeder with easily adjustable release gap according to claim 1, characterized in that, The outer shell (1) is rotatably connected with a driving tooth (6) and a driven tooth (7) that mesh with each other. The driving tooth (6) is connected to one axial end of the lower roller (3), and the driven tooth (7) is slidably connected to one axial end of the upper roller (2). One of the upper roller (2) and the driven tooth (7) is provided with a guide groove (701), and the other of the two is provided with a guide block (201) that slidably engages with the guide groove (701).

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