CN114043582A

CN114043582A - Food steamer processing is with efficient bamboo strip shaper of sharpeing

Info

Publication number: CN114043582A
Application number: CN202111408410.6A
Authority: CN
Inventors: 詹刘慧; 何易
Original assignee: Huaining Jiangzhen Qiming Steamer Co ltd
Current assignee: Huaining Jiangzhen Qiming Steamer Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-02-15
Anticipated expiration: 2041-11-19
Also published as: CN114043582B

Abstract

The invention discloses an efficient bamboo strip sharpening forming device for processing a food steamer, which comprises supporting legs, wherein the top ends of the supporting legs are fixedly connected with a bushing plate provided with a plurality of vertical through holes, the top sides of the bushing plate are fixedly connected with a connecting seat and a horizontally arranged triangular support, the connecting seat is positioned on the inner side of the triangular support, the bottom side of the bushing plate is provided with a material collecting box, the vertical outer wall of the material collecting box is detachably connected with a bamboo chip box, the top end of the bamboo chip box is attached to the bottom end of the bushing plate, the top end of the triangular support is fixedly connected with a guide rail plate, a movable horizontal polishing structure is arranged on the guide rail plate, and the top ends of the connecting seat are fixedly connected with a hollow discharging plate and a grid rail plate which are the same in height. The invention realizes the simultaneous processing of a plurality of bamboo strips, greatly improves the production efficiency and the applicability of the device, and the two ends of each bamboo strip are respectively processed, thereby preventing the error caused by the asynchronous simultaneous processing of the two ends, improving the forming quality, having high integral automation degree and liberating the labor force.

Description

Food steamer processing is with efficient bamboo strip shaper of sharpeing

Technical Field

The invention relates to the technical field of food steamer production, in particular to an efficient bamboo strip sharpening and forming device for food steamer processing.

Background

The bamboo food steamer is originated in the Han Dynasty, is a wonderful flower of Chinese food culture, wherein the bamboo food steamer is original in taste and original in flavor, steam water does not flow back, the color, aroma and taste are all reputed in the world, as an ancient handicraft, the bamboo food steamer is mainly divided into an green tangerine peel arrowed bamboo food steamer and a green tangerine peel removed phyllostachys pubescens food steamer, the green tangerine peel arrowed bamboo food steamer is rare, mainly because the price is low, the quality is not good, the early stage of the 80 s is more common, the food steamer material for removing the green tangerine peel is mostly made of the phyllostachys pubescens, bamboo sheets are adopted for binding, and because the material is hard and solid, the thick bamboo skin must be removed by part of the thickness of the phyllostachys pubescens, and the bamboo skin of about 5-6 mm is left as the main material.

Although the steamer is widely used at present, the steamer has some problems in the actual production process:

1. when the existing bamboo steamer is used for producing woven bamboo canes, the two ends of the bamboo canes are usually sharpened to be formed so as to facilitate subsequent weaving, but most of the existing devices can only process the two ends of the bamboo canes one by one, so that the production efficiency is low;

2. the existing bamboo cane sharpening and forming device of the food steamer has poor applicability, most bamboo canes can only be processed in a single size, and a cutter on the device is required to be replaced when different bamboo canes are processed, so that the device is troublesome;

3. the bamboo splints of the existing partial steamer are sharpened and formed by the device, and the bamboo splints still need to be sent into a processing area one by one manually, so that the efficiency is low and the workload is large.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides an efficient bamboo strip sharpening and forming device for processing a steamer.

In order to achieve the purpose, the invention adopts the following technical scheme:

an efficient bamboo batten sharpening forming device for processing a food steamer comprises supporting legs, wherein the top ends of the supporting legs are fixedly connected with a bushing plate provided with a plurality of vertical through holes, the top sides of the bushing plate are fixedly connected with a connecting seat and a horizontally arranged triangular support, the connecting seat is positioned on the inner side of the triangular support, the bottom side of the bushing plate is provided with a material collecting box, the vertical outer wall of the material collecting box is detachably connected with a bamboo chip box, the top end of the bamboo chip box is attached to the bottom end of the bushing plate, the top end of the triangular support is fixedly connected with a guide rail plate, a movable horizontal polishing structure is arranged on the guide rail plate, the top end of the connecting seat is fixedly connected with a hollow discharge plate and a grid rail plate which are the same in height, a through groove is formed between the discharge plate and the grid rail plate, the top end of the discharge plate is provided with a track which is as high in number as the grid rail plate, and two sides of the horizontal polishing structure are provided with a compressing structure for fixing bamboo battens, a transmission structure for transporting bamboo strips is arranged in the grid track plate, and a sliding groove is formed in the top of the transmission structure.

Preferably, the horizontal polishing structure comprises a sliding plate, a first air cylinder, a horizontal connecting plate, a first motor and a knife sharpener, the sliding plate is connected with the guide rail plate in a sliding mode, the first air cylinder is fixedly connected with the sliding plate, an output shaft of the first air cylinder is fixedly connected with the horizontal connecting plate, the first motor is provided with a plurality of tracks which correspond to the discharge plate one to one, the output shaft of the first motor is fixedly connected with the knife sharpener, and a cutting structure matched with the knife sharpener is arranged on the bottom side of the knife sharpener.

Preferably, the cutting structure comprises a plurality of cutting knives and a second air cylinder, the bottom end of the second air cylinder is fixedly connected with the top end in the through groove, and an output shaft of the second air cylinder is detachably connected with the cutting knives.

Preferably, the strip groove that docks with the track is seted up to the vertical outer wall of the flourishing bamboo case of top fixedly connected with flourishing bamboo case of play flitch and flourishing bamboo case, the vertical division board that sets up side by side of flourishing bamboo incasement wall fixedly connected with, and its inner bottom plate is equipped with the rectangular channel, and sliding connection has the bamboo pole of dialling in the rectangular channel, the bottommost height of division board is the same with strip groove peak, the inboard fixedly connected with cylinder three and the limit baffle of play flitch, and the output shaft of cylinder three run through limit baffle and with group bamboo pole fixed connection.

Preferably, compact structure includes reset spring, depression bar, U-shaped frame, cylinder four and spacing depression bar, reset spring and depression bar all are provided with a plurality ofly, and the top and the horizontally connect board swing joint of depression bar, reset spring connects between depression bar and horizontally connect board, the both ends and the play flitch outer wall fixed connection of U-shaped frame, cylinder four is fixed in the top side of U-shaped frame, and its output shaft and spacing depression bar fixed connection, spacing depression bar is equipped with a plurality of briquetting of using with the track is supporting, and spacing depression bar is parallel with a play flitch, spacing depression bar and depression bar distribution are in the both sides of motor one.

Preferably, transmission structure includes motor two, belt pulley group, bull stick, runner and belt, motor two and bushing fixed connection, the both ends of bull stick all extend to the outside of box track board, and wherein two output shaft fixed connection of belt pulley group and motor are passed through to one end, the runner is equipped with a plurality ofly, one of them and bull stick fixed connection, and all the other runner both ends are connected with box track board inner wall rotation, the belt cover is established in the outside of each runner, and the belt on top side is located the spout bottom side of box track board.

Preferably, a plurality of universal wheels are uniformly arranged on the bottom side of the material collecting box.

Preferably, the top end of the bamboo poking rod extends into the bamboo containing box, and the extending height of the bamboo poking rod is lower than the height of the strip-shaped groove.

Compared with the prior art, the invention provides an efficient bamboo strip sharpening and forming device for processing a food steamer, which has the following beneficial effects:

1. according to the invention, through mutual cooperation among all parts, simultaneous processing of a plurality of bamboo strips is realized, the production efficiency of the device is greatly improved, and the two ends of each bamboo strip are respectively processed, so that the error caused by asynchronous simultaneous processing of the two ends is prevented, and the forming quality is improved;

2. the bamboo batten processing device can process bamboo battens with different sizes at the same time, greatly improves the applicability of the device, avoids the operation of replacing a processing cutter, and effectively improves the production efficiency;

3. the automatic feeding device has high integral automation degree, does not need manual long-time operation, greatly reduces the manual burden and improves the feeding efficiency;

4. the bamboo strip cleaning machine is stable in overall structure, convenient to use, convenient to clean bamboo scraps, capable of improving cleaning efficiency and convenient to transport and process the finished bamboo strips.

Drawings

FIG. 1 is a schematic perspective view of an efficient bamboo cane sharpening device for processing a food steamer according to the present invention;

FIG. 2 is a schematic top view of the bamboo shoot sharpening device for processing food steamer according to the present invention;

FIG. 3 is a schematic side view of the bamboo shoot sharpening device for processing food steamer according to the present invention;

FIG. 4 is a schematic cross-sectional view taken along line A-A in FIG. 3;

fig. 5 is an enlarged schematic view of B in fig. 1.

In the figure: the bamboo chip box comprises supporting legs 1, a leakage plate 101, a bamboo chip box 102, a connecting seat 103, a triangular support 2, a guide rail plate 201, a sliding plate 202, a first air cylinder 203, a horizontal connecting plate 204, a first motor 205, a return spring 206, a pressure rod 207, a cutting knife 208, a second air cylinder 209, a knife sharpener 210, a discharge plate 3, a bamboo containing box 301, a separation plate 302, a third air cylinder 303, a limit baffle 304, a bamboo poking rod 305, a U-shaped frame 4, a fourth air cylinder 401, a limit pressure rod 402, a second motor 5, a pulley set 501, a rotating rod 502, a dividing rail plate 503, a rotating wheel 504, a belt 505, a material collecting box 6 and a universal wheel 601.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example one

Referring to fig. 1-5, an efficient bamboo cane sharpening forming device for processing a food steamer is provided, in order to improve efficiency of bamboo cane sharpening forming, reduce workload of workers and improve feeding efficiency, and enhance applicability of the device, wherein a supporting leg 1 is provided, a bushing 101 provided with a plurality of vertical through holes is fixedly connected to a top end of the supporting leg 1, a connecting seat 103 and a horizontally arranged triangular support 2 are fixedly connected to a top side of the bushing 101, the connecting seat 103 is positioned at an inner side of the triangular support 2, a material collecting box 6 is arranged at a bottom side of the bushing 101, a bamboo chip box 102 is detachably connected to a vertical outer wall of the material collecting box 6, a top end of the bamboo chip box 102 is attached to a bottom end of the bushing 101, in order to ensure flexibility of a horizontal polishing structure and improve maneuverability of the device, a guide rail plate 201 is fixedly connected to a top end of the triangular support 2, and a movable horizontal polishing structure is arranged on the guide rail plate 201, in order to guarantee that the bamboo strips keep horizontal in the whole moving process, here at the same hollow play flitch 3 of top fixedly connected with height of connecting seat 103 and box track board 503, in order to process the bamboo strips from a plurality of angles conveniently, be provided with logical groove here between play flitch 3 and box track board 503, it is equipped with the track of high quantity such as box track board 503 to go out the flitch 3 top, in order to ensure the stability that the bamboo strips was processed man-hour, thereby guarantee the quality that the bamboo strips take shape, here the both sides of the structure of polishing at the level are provided with carries out fixed compact structure to the bamboo strips, be provided with the transmission structure of transportation bamboo strips in the box track board 503, and its top is equipped with the spout.

In the embodiment, when the device is used, the bamboo strips are firstly stacked into the bamboo containing box 301 according to the sizes of the bamboo strips, the structures in the discharging plate 3 push out the bamboo strips at the bottommost layer until one ends of the bamboo strips are positioned at the through grooves, the bamboo strips stop moving, one ends of the bamboo strips are sharpened and formed through the horizontal grinding structure and the cutting structure, wherein, the horizontal grinding structure carries out processing treatment in the horizontal direction, the cutting structure is responsible for work in the vertical direction, after one end is processed, the bamboo splints are pushed into the grid track plate 503, the transmission structure controls the bamboo splints to continue moving until the other ends of the bamboo splints are positioned at the through grooves, the processing operation is repeated, in the processing process, the bamboo splints are always clamped by the pressing structure, the bamboo splints are transferred into the material collecting box 6 by the transmission structure after the processing is finished, and bamboo scraps generated in the ear processing process fall into the bamboo scrap box 102 through the leakage plates 101.

Example two

As shown in fig. 1 to 5, this embodiment is substantially the same as embodiment 1, and preferably, in order to achieve multidirectional processing of bamboo strips, improve the efficiency of the sharpening formation, the horizontal grinding structure comprises a sliding plate 202, a cylinder one 203, a horizontal connecting plate 204, a motor one 205 and a grinding knife 210, wherein the sliding plate 202 is connected with the guide rail plate 201 in a sliding manner, the cylinder one 203 is fixedly connected with the sliding plate 202, an output shaft of the cylinder one 203 is fixedly connected with the horizontal connecting plate 204, in order to ensure that the processing of the bamboo strips is not influenced mutually, a plurality of motors I205 are arranged and correspond to the tracks of the discharging plate 3 one by one, and its output shaft and 210 fixed connection whets a knife, the bottom side of whetting a knife 210 is provided with the supporting cutting structure that uses, and the cutting structure includes a plurality of cutting knife 208 and the second 209 of cylinder, and the bottom and the logical inslot top end fixed connection of the second 209 of cylinder, and its output shaft and cutting knife 208 can be dismantled and be connected.

In this embodiment, according to the shape that takes shape as required, select the cutter of processing usefulness, bamboo strip one end gets into to lead to the groove top side and adds man-hour, and cylinder one 203, motor one 205 and cylinder two 209 start, and cylinder two 209 are controlled cutting knife 208 and are carried out the cutting of vertical direction to bamboo strip one end, and cylinder one 203 drives horizontal connecting plate 204 and pushes down, and motor one 205 synchronous downstream this moment drives the fixed 210 that whets a knife of its output shaft and grind and cut bamboo strip one end.

EXAMPLE III

As shown in fig. 4, this embodiment is substantially the same as embodiment 1, preferably, in order to realize automatic discharging of bamboo strips, reduce the manual burden, and ensure that different bamboo strips are discharged simultaneously each time, here, a bamboo containing box 301 is fixedly connected to the top end of a discharge plate 3, a vertical outer wall of the bamboo containing box 301 is provided with a strip-shaped groove butted with a rail, the inner wall of the bamboo containing box 301 is fixedly connected with a plurality of partition plates 302 arranged vertically side by side, and an inner bottom plate thereof is provided with a rectangular groove, a bamboo poking rod 305 is slidably connected in the rectangular groove, the height of the bottom end of the partition plate 302 is the same as the highest point of the strip-shaped groove, the inner side of the discharge plate 3 is fixedly connected with a cylinder three 303 and a limit baffle 304, and an output shaft of the cylinder three 303 penetrates through the limit baffle 304 and is fixedly connected with the bamboo poking rod 305, in order to prevent the bamboo poking rod 305 from moving outside the bamboo containing box 301, the top end of the bamboo poking rod 305 is arranged to extend to the interior of the bamboo containing box 301, and the extending height of the strip-shaped groove is lower than that of the strip-shaped groove.

In this embodiment, the cylinder three 303 starts to take the bamboo poking rod 305 to do reciprocating motion, thereby realizing the automatic discharging of the bamboo splints, and the limit baffle 304 prevents the bamboo poking rod 305 from moving too far, causing other bamboo splints on the top side to fall, and ensuring that the return of the bamboo poking rod 305 is smooth.

Example four

As shown in fig. 4, this embodiment is substantially the same as embodiment 1, preferably, in order to ensure the stability of the bamboo batten during processing, and different ends are clamped by using different parts, so as to greatly prolong the service life of the parts, and ensure the quality of the bamboo batten processing, the pressing structure includes a plurality of return springs 206, pressing rods 207, U-shaped frames 4, cylinder four 401 and a limiting pressing rod 402, the return springs 206 and the pressing rods 207 are provided, the top ends of the pressing rods 207 are movably connected with the horizontal connecting plate 204, the return springs 206 are connected between the pressing rods 207 and the horizontal connecting plate 204, two ends of the U-shaped frames 4 are fixedly connected with the outer wall of the discharge plate 3, the cylinder four 401 is fixed on the top side of the U-shaped frames 4, and the output shaft thereof is fixedly connected with the limiting pressing rod 402, the limiting pressing rod 402 is provided with a plurality of pressing blocks used in cooperation with the rail, and the limiting pressing rod 402 is parallel to the discharge plate 3, the limiting pressure rod 402 and the pressure rod 207 are distributed on two sides of the first motor 205.

In this embodiment, when the bamboo batten is processed for the first time, the cylinder four 401 is started, the limiting pressure lever 402 is pushed to press each bamboo batten downwards, sharpening forming is facilitated, when the bamboo batten is processed for the second time, the horizontal connecting plate 204 moves downwards to drive the pressure lever 207 to move downwards to clamp the bamboo batten, the pressure lever 207 is in contact with a processing cutter in advance, the pressure of the reset spring 206 is pressed downwards by the horizontal connecting plate 204 to fix the position of the bamboo batten, and after the processing is finished, the reset spring 206 drives the pressure lever 207 to reset.

EXAMPLE five

As shown in fig. 4, this embodiment is substantially the same as embodiment 1, and preferably, in order to facilitate movement of the bamboo splints during processing, a transmission structure is provided here, which includes a second motor 5, a pulley set 501, a rotating rod 502, a rotating wheel 504 and a belt 505, the second motor 5 is fixedly connected with the bushing 101, two ends of the rotating rod 502 extend to the outer side of the cellular track plate 503, one end of the rotating rod is fixedly connected with an output shaft of the second motor 5 through the pulley set 501, the rotating wheel 504 is provided with a plurality of pulleys, one of the pulleys is fixedly connected with the rotating rod 502, two ends of the remaining pulleys 504 are rotatably connected with an inner wall of the cellular track plate 503, the belt 505 is sleeved on the outer side of each pulley 504, and the belt 505 on the top side is located at the bottom side of the sliding chute of the cellular track plate 503.

In this embodiment, when the bamboo strip has finished processing of one end and has contacted belt 505, two 5 starter motors drive bull stick 502 to rotate, through the cooperation between each runner 504 for the bamboo strip removes, and when the unprocessed one end of bamboo strip got into the barrel groove region, two 5 stop motors, wait to process after, transport the bamboo strip that finishes at two 5 starter motors.

EXAMPLE six

As shown in fig. 2, this embodiment is substantially the same as embodiment 1, and preferably, a plurality of universal wheels 601 are uniformly arranged on the bottom side of the material collecting box 6.

In this embodiment, through the removal of universal wheel 601 convenience case 6 that gathers materials, improve the mobility of device to make things convenient for the transportation of bamboo strip.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An efficient bamboo batten sharpening forming device for processing a food steamer comprises supporting legs (1), wherein the top ends of the supporting legs (1) are fixedly connected with a bushing plate (101) provided with a plurality of vertical through holes, the top side of the bushing plate (101) is fixedly connected with a connecting seat (103) and a horizontally arranged triangular support (2), the connecting seat (103) is located on the inner side of the triangular support (2), a material collecting box (6) is arranged on the bottom side of the bushing plate (101), a bamboo chip box (102) is detachably connected to the vertical outer wall of the material collecting box (6), the top end of the bamboo chip box (102) is attached to the bottom end of the bushing plate (101), the efficient bamboo batten sharpening forming device is characterized in that a guide rail plate (201) is fixedly connected to the top end of the triangular support (2), a movable horizontal polishing structure is arranged on the guide rail plate (201), and a hollow discharge plate (3) and a grid rail plate (503) which are the same in height are fixedly connected to the top ends of the connecting seat (103), and go out and be provided with logical groove between flitch (3) and the box track board (503), go out flitch (3) top be equipped with box track board (503) wait high quantity's track, the both sides of level structure of polishing are provided with and carry out fixed compact structure to the bamboo strip, be provided with the transmission structure of transportation bamboo strip in box track board (503), and its top is equipped with the spout.

2. The efficient bamboo cane sharpening device for the food steamer processing according to claim 1, wherein the horizontal grinding structure comprises a sliding plate (202), a first air cylinder (203), a horizontal connecting plate (204), a first motor (205) and a grinding knife (210), the sliding plate (202) is slidably connected with the guide rail plate (201), the first air cylinder (203) is fixedly connected with the sliding plate (202), an output shaft of the first air cylinder is fixedly connected with the horizontal connecting plate (204), the first motor (205) is provided with a plurality of tracks which correspond to the discharge plate (3) one by one, the output shaft of the first air cylinder is fixedly connected with the grinding knife (210), and a cutting structure which is matched with the grinding knife (210) is arranged on the bottom side of the grinding knife (210).

3. The bamboo strip sharpening device for the steamer processing with high efficiency as claimed in claim 2, wherein the cutting structure comprises a plurality of cutting knives (208) and a second air cylinder (209), the bottom end of the second air cylinder (209) is fixedly connected with the top end in the through groove, and the output shaft of the second air cylinder is detachably connected with the cutting knives (208).

4. The high-efficiency bamboo cane sharpening forming device for processing the food steamer as claimed in claim 1, wherein a bamboo containing box (301) is fixedly connected to the top end of the discharge plate (3), a strip-shaped groove in butt joint with a rail is formed in one vertical outer wall of the bamboo containing box (301), a plurality of partition plates (302) which are vertically arranged side by side are fixedly connected to the inner wall of the bamboo containing box (301), a rectangular groove is formed in an inner bottom plate of the bamboo containing box, a bamboo poking rod (305) is connected in the rectangular groove in a sliding mode, the height of the lowest end of each partition plate (302) is the same as the highest point of the strip-shaped groove, a cylinder III (303) and a limit baffle (304) are fixedly connected to the inner side of the discharge plate (3), and an output shaft of the cylinder III (303) penetrates through the limit baffle (304) and is fixedly connected with the bamboo poking rod (305).

5. The high-efficiency bamboo strip sharpening device for processing the food steamer according to claim 1 or 2, wherein the compressing structure comprises a plurality of reset springs (206), a plurality of compression rods (207), a U-shaped frame (4), a plurality of cylinders (401) and a plurality of limiting compression rods (402), the reset springs (206) and the compression rods (207) are respectively arranged, the top ends of the compression rods (207) are movably connected with a horizontal connecting plate (204), the reset springs (206) are connected between the compression rods (207) and the horizontal connecting plate (204), two ends of the U-shaped frame (4) are fixedly connected with the outer wall of the discharging plate (3), the cylinders (401) are fixed on the top side of the U-shaped frame (4), output shafts of the cylinders are fixedly connected with the limiting compression rods (402), the limiting compression rods (402) are provided with a plurality of pressing blocks matched with a rail, and the limiting compression rods (402) are parallel to the discharging plate (3), the limiting pressure rod (402) and the pressure rod (207) are distributed on two sides of the first motor (205).

6. The bamboo strip sharpening device as claimed in claim 1, wherein the transmission structure comprises a second motor (5), a pulley set (501), a rotating rod (502), a rotating wheel (504) and a belt (505), the second motor (5) is fixedly connected with the bushing (101), two ends of the rotating rod (502) extend to the outer side of the cellular track plate (503), one end of the rotating rod is fixedly connected with an output shaft of the second motor (5) through the pulley set (501), the rotating wheel (504) is provided with a plurality of rotating wheels, one of the rotating wheels is fixedly connected with the rotating rod (502), two ends of the other rotating wheels (504) are rotatably connected with the inner wall of the cellular track plate (503), the belt (505) is sleeved on the outer side of each rotating wheel (504), and the belt (505) on the top side is located on a sliding chute on the bottom side of the cellular track plate (503).

7. The bamboo strip sharpening device with high efficiency for the processing of the steamer as claimed in claim 1, characterized in that the bottom side of the material collecting box (6) is uniformly provided with a plurality of universal wheels (601).

8. The bamboo cane sharpening device for the steamer processing with high efficiency as claimed in claim 4, wherein the top end of the bamboo poking rod (305) extends to the inside of the bamboo containing box (301) and the extending height of the bamboo poking rod is lower than the height of the strip-shaped groove.