CN105835400B - Full automatic screw quantifying feed briquetting press - Google Patents

Abstract

The fully automatic spiral quantitative feeding briquette machine includes a horizontal bottom plate with a bracket and a rotary power drive mechanism, a disc on the bracket, a cylinder on the disc, and a radius of less than The template of the disc, the center of the template is fixed with a rotating shaft, the lower end of the rotating shaft passes down through the disc and is connected to the power output end of the rotary power drive mechanism, the rotating shaft is connected to the disc through a positioning bearing, and there are four cylinders on the template Mold cavity, four cylindrical mold cavities are evenly arranged along the center line of the template; there is a mounting frame on the upper end of the cylinder body, and a pressing motor is installed on the mounting frame. The main shaft of the pressing motor is set horizontally. The outer contour transmission is matched with a forming and pushing mechanism located inside the cylinder and above the template. The invention has the advantages of simple structure, low cost, small volume, high degree of automation, low labor intensity, high production efficiency, clean and hygienic working environment, and is especially suitable for single family use.

Description

Fully automatic spiral quantitative feeding briquettes machine

technical field

The invention belongs to honeycomb briquette manufacturing and molding equipment, in particular to a full-automatic spiral quantitative feeding briquette machine.

Background technique

In recent years, coal is still the main energy source for cooking or heating at home. Coal is processed into honeycomb briquettes for use, which has the advantages of cleanliness, easy handling, and high combustion efficiency, and is especially popular in small towns and rural areas. However, most of the existing briquette processing equipment has defects such as complex structure, high cost, large floor space, low degree of automation, and many operators, which is inconvenient and uneconomical for a single family to use. In addition, the briquettes produced by traditional artificial briquettes with simple briquettes molds have good density and are easy to burn through. However, due to the defects of high labor intensity and low production efficiency in artificial briquettes, it is not easy to be popularized and applied.

Contents of the invention

In order to solve the deficiencies in the prior art, the present invention provides a fully automatic screw quantitative feeding briquette machine which is simple in structure, small in size, low in labor intensity, high in automation degree and high in production efficiency, and is specially suitable for a single family.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a full-automatic spiral quantitative feeding coal briquette machine, including a horizontally arranged bottom plate, a bracket and a rotary power drive mechanism are arranged on the bottom plate, a disc is arranged horizontally on the bracket, and a disc is arranged on the disc. There is a cylinder, the centerline of the disc coincides with the centerline of the cylinder, and the outer diameter of the cylinder is equal to the outer diameter of the disc;

The upper surface of the disc is provided with a template with a radius smaller than that of the disc. The center of the template is fixed with a rotating shaft. The lower end of the rotating shaft passes through the disc downwards to connect with the power output end of the rotary power drive mechanism. The rotating shaft is connected to the disc through a positioning bearing. , there are four cylindrical mold cavities on the template, and the four cylindrical mold cavities are evenly arranged along the center line of the template;

There is a mounting frame on the upper end of the cylinder, and a pressing motor is installed on the mounting frame. The main shaft of the pressing motor is set horizontally. The main shaft of the pressing motor is connected to a cam. and pushing mechanism;

The forming and pushing mechanism includes a support plate, a left crossbeam, a right crossbeam, a left fixing frame and a right fixing frame. The upper surface of the support plate is press-fitted with the outer contour of the cam. The left and right crossbeams are located at the same height and are horizontal along the front-to-back direction. Setting, the front and rear ends of the left beam and the right beam are fixed on the inner wall of the cylinder, the support plate is arranged horizontally and above the left beam and the right beam, and a left compression spring is arranged between the lower surface of the support plate and the left beam, A right compression spring is arranged between the lower surface of the support plate and the right beam, the left side of the left fixing frame is fixed on the left side of the inner wall of the cylinder, the right side of the right fixing frame is fixed on the right side of the inner wall of the cylinder, and the right side of the left fixing frame There is a left guide tube, the left side of the right fixed frame is provided with a right guide tube, the center line of the left guide tube and the right guide tube is vertically arranged, the left side and the right side of the support plate are respectively vertically provided with a left pressure rod and a right pressure rod, and the left side The pressure rod is installed in the left guide pipe, the right pressure rod is installed in the right guide pipe, the lower end of the left pressure rod is equipped with a push plate, and the lower end of the right pressure rod is horizontally equipped with a circular pressure plate, the outer diameter of the pressure plate is the same as the inner diameter of the cylindrical cavity Equal, the lower surface of the pressure plate is vertically provided with a briquette honeycomb forming rod;

The right side of the disc is provided with a through hole whose inner diameter is larger than the inner diameter of the cylindrical mold cavity, and the left side of the disc is provided with honeycomb holes corresponding to the upper and lower sides of the briquette honeycomb forming rod. Correspondence up and down;

The front side of the cylinder body is obliquely provided with a feeding pipe, the lower end of the feeding pipe is located above the frontmost cylindrical cavity, the upper part of the lower end of the feeding pipe is provided with a gap, the gap communicates with the lower port of the feeding pipe, and the upper end of the feeding pipe is provided with a Spiral quantitative feeding device outside the cylinder;

The screw type quantitative feeding device includes a hopper, the rear side of the hopper is fixed on the front side of the cylinder, the top of the hopper is open, the bottom of the hopper is connected to the upper end of the feeding pipe, a support is provided on the front side of the top of the hopper, and a feeding motor is provided on the support , the main shaft of the feeding motor is coaxially connected with the feeding shaft through the coupling. The feeding shaft extends from the upper part of the hopper to the lower end of the feeding pipe. The center line of the feeding shaft coincides with the center line of the feeding pipe. The direction is provided with the lower helical blade located in the feeding pipe, the pitch of the lower helical blade gradually decreases from top to bottom, there is a gap of 0.2-0.5mm between the outer edge of the lower helical blade and the inner wall of the feeding pipe, and the feeding shaft is set along the axial direction. There is an upper spiral blade located in the hopper, and a bearing seat located between the lower spiral blade and the upper spiral blade is provided in the lower part of the hopper, and the feeding shaft passes through the bearing seat and is rotationally connected with the bearing seat through the feeding bearing.

The rotary power driving mechanism includes a stepping motor, the main shaft of the stepping motor is arranged horizontally, the main shaft of the stepping motor is provided with a driving bevel gear, and the lower end of the rotating shaft is provided with a driven bevel gear, and the driving bevel gear meshes with the driven bevel gear.

A belt conveying mechanism is arranged on the base plate, and the left end of the belt conveying mechanism is located below the through hole.

A blanking hole is provided on the left side of the disc, and a material shifting plate is provided on the outer peripheral edge of the formwork, and the material pushing plate is in contact with the inner wall of the cylinder.

Adopting the above technical scheme, the working process of the present invention is as follows: the mixed coal material is sent into the hopper, the feeding motor drives the feeding shaft and the lower screw blade to rotate for one or several weeks, and the quantitative coal material falls into the hopper through the feeding pipe. In a cylindrical mold cavity on the template, the stepping motor drives the driving bevel gear to rotate 90°, the driving bevel gear drives the driven bevel gear to rotate, the driven bevel gear drives the rotating shaft to rotate, and the rotating shaft drives the template to rotate 90°. The mold cavity turns to the right below the pressing plate and the briquette honeycomb forming rod, the stepping motor stops, the pressing motor drives the cam to rotate, the cam turns to press the support plate downward, the support plate overcomes the elastic force of the left compression spring and the right compression spring and moves downward, supporting The plate drives the left pressing rod and the right pressing rod to move down respectively along the left guide pipe and the right guiding pipe. The coal material is compacted and compacted. When the cam presses the support plate to the lowest position, the lower end of the coal briquette honeycomb forming rod extends into the honeycomb hole, which ensures that the two ends of the honeycomb honeycomb are transparent; the other cylindrical cavity rotates to the bottom of the feed pipe , charge the cylindrical mold cavity through the feed pipe, then the pressing motor drives the cam to reset, and then the stepping motor continues to start, driving the turntable to rotate 90°, the pressing motor drives the briquette honeycomb forming rod and the pressing plate to turn to the cylindrical mold below The coal material in the cavity is pressed, and at the same time, it continues to be loaded through the feed pipe; then the pressing motor drives the cam to reset, and then the stepping motor continues to start, driving the turntable to rotate 90°, and the pressing motor drives the briquette honeycomb forming rod and pressing plate Press the coal material in the cylindrical mold cavity that is transferred to the bottom, and continue to carry out the charging operation through the feeding pipe at the same time. The cylindrical mold cavity under the left pressure rod has pressed honeycomb coal, and the push plate pushes the honeycomb coal downward. , Honeycomb automatically falls on the belt conveyor mechanism, and is transported to the designated area by the belt conveyor mechanism. The above working process is circulated to achieve continuous and automatic operation of pressing briquettes.

When the feed pipe is filling the cylindrical mold cavity, some of the coal material will fall on the formwork, and the coal material on the formwork will fall between the formwork and the cylinder body, and the material shifting plate on the outer edge of the formwork will rotate with the formwork. , the coal can be moved to the drop hole and dropped to the bottom of the cylinder to be collected and reused.

The fixed-feed feeding principle of the screw-type quantitative feeding device is as follows: the pitch of the lower screw blade is constant, and the cavity formed between the inner wall of the feeding pipe and the feeding shaft is separated by the lower screw blade and filled with a certain amount of coal, so that it can be controlled. The angle at which the feeding motor rotates to control the amount of feeding. There is a gap of 0.2-0.5mm between the outer edge of the lower spiral blade and the inner wall of the feeding pipe, which can avoid coal material leakage as much as possible, and the feeding amount is more accurate. The upper screw blade plays the role of conveying the coal material to the upper port of the feed pipe and compacting the coal material initially, and the pitch of the lower screw blade gradually decreases from top to bottom, so that the coal material is further compacted and the quantitative feeding is accurate. The degree is higher, and the situation of coal spilling is greatly reduced. The bearing seat plays the role of positioning and supporting the feeding shaft. The gap provided at the upper part of the lower end of the feed pipe is convenient for feeding, so that the coal material can be more accurately dropped into the cylindrical mold cavity from the lower end of the feed pipe, and the coal material can be avoided from falling onto the formwork as much as possible.

To sum up, the present invention has the advantages of simple structure, low cost, small volume, high degree of automation, low labor intensity, high production efficiency, clean and hygienic working environment, and is especially suitable for single family use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a left side view of Fig. 1 .

detailed description

As shown in Fig. 1 and Fig. 2, the full-automatic spiral quantitative feeding briquette machine of the present invention comprises a horizontally arranged base plate 1, a support 2 and a rotary power drive mechanism are provided on the base plate 1, and a disc 3 is horizontally provided on the support 2, The disc 3 is provided with a cylinder 4 , the centerline of the disc 3 coincides with the centerline of the cylinder 4 , and the outer diameter of the cylinder 4 is equal to the outer diameter of the disc 3 .

The upper surface of the disk 3 is provided with a template 5 with a radius smaller than that of the disk 3, and the center of the template 5 is fixedly provided with a rotating shaft 6. The positioning bearing 7 is rotatably connected to the disc 3, and the template 5 is provided with four cylindrical mold cavities 8, and the four cylindrical mold cavities 8 are evenly arranged along the center line of the template 5.

The upper end of the cylindrical body 4 is provided with a mounting bracket 9, the mounting bracket 9 is provided with a pressing motor 10, the main shaft of the pressing motor 10 is arranged horizontally, the main shaft transmission of the pressing motor 10 is connected with a cam 11, and the outer contour transmission of the cam 11 cooperates with a The forming and pushing mechanism inside the cylinder body 4 and above the template 5.

The forming and pushing mechanism includes a support plate 12, a left crossbeam 13, a right crossbeam 14, a left fixed frame 15 and a right fixed frame 16. Located at the same height and arranged horizontally along the front-to-back direction, the front and rear ends of the left crossbeam 13 and the right crossbeam 14 are fixed on the inner wall of the cylinder 4, and the support plate 12 is horizontally arranged and located above the left crossbeam 13 and the right crossbeam 14, A left compression spring 17 is provided between the lower surface of the support plate 12 and the left beam 13, a right compression spring 18 is provided between the lower surface of the support plate 12 and the right beam 14, and the left side of the left fixing frame 15 is fixed on the inner wall of the cylindrical body 4. The left side, the right fixed mount 16 right sides are fixedly located on the right side of the cylindrical body 4 inwalls, the left fixed mount 15 right sides are provided with the left guide tube 19, the right fixed mount 16 left sides are provided with the right guide tube 20, and the left guide tube 19 Set vertically with the center line of the right guide tube 20, the left side and the right side of the support plate 12 are respectively vertically provided with a left press bar 21 and a right press bar 22, the left press bar 21 is penetrated in the left guide tube 19, and the right press bar 22 It is installed in the right guide tube 20, the lower end of the left pressure rod 21 is provided with a push plate 23, and the lower end of the right pressure rod 22 is horizontally provided with a circular pressure plate 24, the outer diameter of the pressure plate 24 is equal to the inner diameter of the cylindrical mold cavity 8, and the pressure plate 24 The lower surface is vertically provided with a briquette honeycomb forming rod 25 .

The right side of the disc 3 is provided with a through hole with an inner diameter greater than the inner diameter of the cylindrical cavity 8, and the left side of the disc 3 is provided with a honeycomb hole 26 corresponding to the briquette honeycomb forming rod 25 up and down, and the through hole and the honeycomb hole 26 are respectively connected to the center of the template 5. The two symmetrical cylindrical mold cavities 8 correspond up and down.

The front side of the cylindrical body 4 is obliquely provided with a feeding pipe 27, the lower end of the feeding pipe 27 is located above the frontmost cylindrical cavity 8, and the upper part of the lower end of the feeding pipe 27 is provided with a gap 40, and the gap 40 communicates with the lower port of the feeding pipe 27 The upper end of the feed pipe 27 is provided with a screw-type quantitative feeding device positioned outside the cylindrical body 4; the screw-type quantitative feeding device includes a hopper 41, the rear side of the hopper 41 is fixed on the front side of the cylindrical body 4, and the top of the hopper 41 is open. The bottom of the hopper 41 communicates with the upper end of the feeding pipe 27, and the front side of the top of the hopper 41 is provided with a support 42, and the support 42 is provided with a feeding motor 43, and the main shaft of the feeding motor 43 is coaxially connected with a feeding shaft 45 through a coupling 44 The feeding shaft 45 extends from the upper part of the hopper 41 to the lower end of the feeding pipe 27. The center line of the feeding shaft 45 coincides with the center line of the feeding pipe 27. The lower helical blade 46, the pitch of the lower helical blade 46 gradually decreases from top to bottom, the outer edge of the lower helical blade 46 and the inner wall of the feed pipe 27 have a gap of 0.2-0.5mm, and the feeding shaft 45 is provided with a hopper located along the axial direction. The upper spiral blade 47 in 41, the inner bottom of the hopper 41 is provided with the bearing seat 48 between the lower spiral blade 46 and the upper spiral blade 47, and the feeding shaft 45 passes through the bearing seat 48 and is rotatably connected with the bearing seat 48 by the feeding bearing.

The rotary power driving mechanism comprises a stepper motor 28, the main shaft of the stepper motor 28 is horizontally arranged, the main shaft of the stepper motor 28 is provided with a driving bevel gear 29, and the lower end of the rotating shaft 6 is provided with a driven bevel gear 30, and the driving bevel gear 29 is connected with the driven bevel gear. The bevel gear 30 meshes.

The bottom plate 1 is provided with a belt conveying mechanism 31 (the belt conveying mechanism 31 is an existing mature technology), and the left end of the belt conveying mechanism 31 is located below the through hole.

The left side of the disc 3 is provided with a blanking hole 32 , and the outer peripheral edge of the template 5 is provided with a shifting plate 33 , and the shifting plate 33 is in contact with the inner wall of the cylinder body 4 .

The working process of the present invention is as follows: the mixed coal material is sent into the hopper 41, the feeding motor 43 drives the feeding shaft 45 and the lower screw blade 46 to rotate for one or several weeks, and the quantitative coal material falls into the hopper by the feed pipe 27. In a cylindrical mold cavity 8 on the template 5, the stepper motor 28 drives the driving bevel gear to rotate 90°, the driving bevel gear 29 drives the driven bevel gear 30 to rotate, the driven bevel gear 30 drives the rotating shaft 6 to rotate, and the rotating shaft 6 drives the template 5 Rotate 90°, the cylindrical mold cavity 8 with coal material turns to the right below the pressing plate 24 and the briquette honeycomb forming rod 25, the stepper motor 28 stops, the pressing motor 10 drives the cam 11 to rotate, and the cam 11 rotates to press the support plate 12 downward, The support plate 12 overcomes the elastic force of the left compression spring 17 and the right compression spring 18 and moves downward, and the support plate 12 drives the left pressure rod 21 and the right pressure rod 22 to move downward along the left guide pipe 19 and the right guide pipe 20 respectively, and the briquette honeycomb is formed The rod 25 is inserted into the coal material, and the pressing plate 24 at the lower end of the right pressure rod 22 also enters the cylindrical mold cavity to press the coal material and compact the coal material. When the cam 11 presses the support plate 12 to the lowest position, the briquette honeycomb forming rod The lower end of 25 stretches into the honeycomb hole 26, which can ensure that the honeycomb ends of the briquette are transparent; the other cylindrical mold cavity 8 is rotated below the feed pipe 27, and the cylindrical mold cavity 8 is charged through the feed pipe 27. Then pressing motor 10 drives cam 11 to reset, then stepping motor 28 continues to start, drives the turntable to rotate 90 °, pressing motor 10 drives briquette honeycomb forming rod 25 and pressing plate 24 to press the coal in the cylindrical cavity 8 below. operation, and continue to carry out the charging operation through the feed pipe 27; then the pressing motor 10 drives the cam 11 to reset, and then the stepping motor 28 continues to start, driving the turntable to rotate 90 °, and the pressing motor 10 drives the briquette honeycomb forming rod 25 and the pressing plate 24 Carry out the pressing operation to the coal material in the cylinder cavity 8 that is transferred to the bottom, and continue to carry out the charging operation through the feed pipe 27 at the same time. The briquettes are pushed down, and the briquettes automatically fall onto the belt conveying mechanism 31, and are transported to the designated area by the belt conveying mechanism 31. The above working process is circulated to achieve continuous and automatic operation of pressing briquettes.

Since the feed pipe 27 is charging the cylindrical mold cavity 8, some of the coal material will fall on the formwork 5, and the coal material on the formwork 5 will fall between the formwork 5 and the cylinder body 4, and the dial on the outer edge of the formwork 5 Material plate 33 along with the rotation of formwork 5, just can put coal material to the blanking hole 32 places and fall to cylinder body 4 below and collect and reuse again.

The fixed feeding principle of the screw-type quantitative feeding device is as follows: the pitch of the lower screw blade 46 is constant, and the cavity formed between the inner wall of the feed pipe 27 and the feeding shaft 45 is separated by the lower screw blade 46 and filled with a certain amount of coal. In this way, the rotation angle of the feeding motor 43 can be manipulated to control the feeding amount. There is a gap of 0.2-0.5mm between the outer edge of the lower helical blade 46 and the inner wall of the feed pipe 27, which not only ensures that the lower helical blade 46 does not contact the feed pipe 27, avoids coal leakage as much as possible, and makes the feeding amount more accurate. The upper screw blade 47 plays the role of transporting the coal material to the upper port of the feed pipe 27 and can initially compact the coal material, and the pitch of the lower screw blade 46 gradually decreases from top to bottom, so that the coal material is further compacted and quantitatively The accuracy of feeding is higher, and the situation of coal material spilling is greatly reduced. The bearing seat 48 plays the role of positioning and supporting the feeding shaft 45 . The gap 40 provided at the upper part of the lower end of the feed pipe 27 plays a role of facilitating feeding, so that the coal material can fall into the cylindrical mold cavity 8 more accurately from the lower end of the feed pipe 27, so as to avoid the coal material from falling on the formwork 5 as much as possible.

The above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced without departing from it. Any modifications or partial replacements within the spirit and scope of the present invention shall fall within the scope of the claims of the present invention.

Claims (3)

1. The fully automatic spiral quantitative feeding briquette machine is characterized in that: it includes a bottom plate set horizontally, a bracket and a rotating power drive mechanism are arranged on the bottom plate, a disc is arranged horizontally on the bracket, a cylinder is arranged on the disc, and a disc The center line of the cylinder coincides with the center line of the cylinder, and the outer diameter of the cylinder is equal to the outer diameter of the disc; The upper surface of the disc is provided with a template with a radius smaller than that of the disc. The center of the template is fixed with a rotating shaft. The lower end of the rotating shaft passes through the disc downwards to connect with the power output end of the rotary power drive mechanism. The rotating shaft is connected to the disc through a positioning bearing. , there are four cylindrical mold cavities on the template, and the four cylindrical mold cavities are evenly arranged along the center line of the template; There is a mounting frame on the upper end of the cylinder, and a pressing motor is installed on the mounting frame. The main shaft of the pressing motor is set horizontally. The main shaft of the pressing motor is connected to a cam. and pushing mechanism; The forming and pushing mechanism includes a support plate, a left crossbeam, a right crossbeam, a left fixing frame and a right fixing frame. The upper surface of the support plate is press-fitted with the outer contour of the cam. The left and right crossbeams are located at the same height and are horizontal along the front-to-back direction. Setting, the front and rear ends of the left beam and the right beam are fixed on the inner wall of the cylinder, the support plate is arranged horizontally and above the left beam and the right beam, and a left compression spring is arranged between the lower surface of the support plate and the left beam, A right compression spring is arranged between the lower surface of the support plate and the right beam, the left side of the left fixing frame is fixed on the left side of the inner wall of the cylinder, the right side of the right fixing frame is fixed on the right side of the inner wall of the cylinder, and the right side of the left fixing frame There is a left guide tube, the left side of the right fixed frame is provided with a right guide tube, the center line of the left guide tube and the right guide tube is vertically arranged, the left side and the right side of the support plate are respectively vertically provided with a left pressure rod and a right pressure rod, and the left side The pressure rod is installed in the left guide pipe, the right pressure rod is installed in the right guide pipe, the lower end of the left pressure rod is equipped with a push plate, and the lower end of the right pressure rod is horizontally equipped with a circular pressure plate, the outer diameter of the pressure plate is the same as the inner diameter of the cylindrical cavity Equal, the lower surface of the pressure plate is vertically provided with a briquette honeycomb forming rod; The right side of the disc is provided with a through hole whose inner diameter is larger than the inner diameter of the cylindrical mold cavity, and the left side of the disc is provided with honeycomb holes corresponding to the upper and lower sides of the briquette honeycomb forming rod. Correspondence up and down; The front side of the cylinder body is obliquely provided with a feeding pipe, the lower end of the feeding pipe is located above the frontmost cylindrical cavity, the upper part of the lower end of the feeding pipe is provided with a gap, the gap communicates with the lower port of the feeding pipe, and the upper end of the feeding pipe is provided with a Spiral quantitative feeding device outside the cylinder; The screw type quantitative feeding device includes a hopper, the rear side of the hopper is fixed on the front side of the cylinder, the top of the hopper is open, the bottom of the hopper is connected to the upper end of the feeding pipe, a support is provided on the front side of the top of the hopper, and a feeding motor is provided on the support , the main shaft of the feeding motor is coaxially connected with the feeding shaft through the coupling. The feeding shaft extends from the upper part of the hopper to the lower end of the feeding pipe. The center line of the feeding shaft coincides with the center line of the feeding pipe. The direction is provided with the lower helical blade located in the feeding pipe, the pitch of the lower helical blade gradually decreases from top to bottom, there is a gap of 0.2-0.5mm between the outer edge of the lower helical blade and the inner wall of the feeding pipe, and the feeding shaft is set along the axial direction. There is an upper spiral blade located in the hopper, and a bearing seat located between the lower spiral blade and the upper spiral blade is provided in the lower part of the hopper, and the feeding shaft passes through the bearing seat and is rotationally connected with the bearing seat through the feeding bearing; The rotary power driving mechanism includes a stepping motor, the main shaft of the stepping motor is arranged horizontally, the main shaft of the stepping motor is provided with a driving bevel gear, and the lower end of the rotating shaft is provided with a driven bevel gear, and the driving bevel gear meshes with the driven bevel gear. 2. The fully automatic screw quantitative feeding briquette machine according to claim 1, characterized in that: a belt conveying mechanism is provided on the bottom plate, and the left end of the belt conveying mechanism is located below the through hole. 3. The fully automatic spiral quantitative feeding coal briquette machine according to claim 1, characterized in that: there is a blanking hole on the left side of the disc, and a shifting plate is provided on the outer peripheral edge of the template, and the shifting plate is in contact with the inner wall of the cylinder .