CN115287946A

CN115287946A - Paper grade (stock) thick liquid hot pressing system

Info

Publication number: CN115287946A
Application number: CN202211031210.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-04

Abstract

The invention relates to the technical field of paper pulp production and processing, in particular to a paper pulp hot-pressing system for papermaking, which comprises a lifting mechanism, a stirring mechanism, a rotating mechanism and an extrusion mechanism, wherein paper pulp is poured in through a feeding hole, a hydraulic cylinder is started to move upwards, the hydraulic cylinder moves upwards to drive a filter screen to move upwards, so that more paper pulp is stored at the upper end of the filter screen, a stirring rod is driven to rotate in the upward movement process of the hydraulic cylinder to stir and mix the paper pulp in the filter screen uniformly, a motor is started to rotate to drive a round block to rotate, the round block rotates to drive an extrusion plate to carry out hot pressing on the paper pulp at the upper end of the filter screen, the extruded paper pulp is adsorbed at the upper end of the extrusion plate through air suction of a connecting pipe after the extrusion plate carries out hot pressing on the paper pulp, when the highest point of an arc plate just leaves a twisting pin, a second spring can drive the extrusion plate to move upwards, so that the paper pulp can be quickly subjected to hot pressing, and a mechanical arm is arranged at the upper end of equipment to quickly take materials at an opening.

Description

Paper grade (stock) pulp hot pressing system

Technical Field

The invention relates to the technical field of paper pulp production and processing, in particular to a paper pulp hot-pressing system for papermaking.

Background

Pulp molding is a three-dimensional papermaking technique. It uses waste paper as raw material, and uses a special mould to mould a paper product with a certain form on the moulding machine. It has four major advantages: the raw materials are waste paper, including paperboard, waste paper box paper, waste white edge paper and the like, and the sources are wide; the manufacturing process is completed by the working procedures of pulping, adsorption molding, drying and shaping and the like, and is harmless to the environment; can be recycled; the volume is smaller than that of the foamed plastic, and the foamed plastic can be overlapped and is convenient for transportation. The paper pulp molding can be used as a lunch box and tableware, and can be used as an industrial cushion package, and the development is very rapid.

However, in the existing paper pulp hot pressing process, a paper pulp filter screen is required to be used for manufacturing paper pulp into a paper blank and then hot pressing is required to be performed, automatic hot pressing and blanking are required to be realized in the large-batch paper pulp hot pressing production process, the traditional paper pulp hot pressing is performed on paper pulp one by one through a hot pressing plate in the hot pressing process, and thus the speed is low and the efficiency is low, so that a paper pulp hot pressing system for papermaking needs to be designed to solve the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a paper pulp hot-pressing system for papermaking, which solves the problems that: the paper pulp is made into paper blanks by a paper pulp filter screen firstly in the existing paper pulp hot pressing process and then hot pressing is carried out, automatic hot pressing and feeding are needed to be realized in the process of carrying out mass paper pulp hot pressing production, the traditional paper pulp carries out hot pressing on the paper pulp one by one through a hot pressing plate in the hot pressing process, and the technical problem of low speed and low efficiency is solved.

In order to achieve the above purpose, the invention is realized by the following technical scheme:

the invention provides a paper pulp hot-pressing system for papermaking, which comprises

The device comprises a lifting mechanism, a stirring mechanism, a rotating mechanism and an extrusion mechanism, wherein one end of the lifting mechanism is provided with the stirring mechanism, the upper end of the stirring mechanism is provided with the rotating mechanism, and one end of the rotating mechanism is provided with the extrusion mechanism; pour paper pulp into through the feed inlet, start hydraulic cylinder upward movement, pneumatic cylinder upward movement drives filter screen upward movement, there are more paper pulp on the filter screen like this, it rotates to stir the misce bene to the paper pulp of inside to drive the puddler at pneumatic cylinder upward movement's in-process, the starter motor rotates, the motor rotates and drives the disk and rotate, the disk rotates and drives the stripper plate and carries out the hot pressing to the paper pulp of filter screen upper end, carry out the hot pressing to paper pulp at the stripper plate, later breathe in through the connecting pipe and adsorb the paper pulp after the extrusion in the stripper plate upper end, just leave the turning round pin when the arc peak, the second spring will drive the stripper plate upward movement, set up like this and can carry out the hot pressing to paper pulp fast, it is quick in the material of getting at the opening part to be equipped with the manipulator in equipment upper end simultaneously.

Specifically, the lifting mechanism comprises a shell, an opening is formed in one end of the shell, one end of the shell is fixedly connected with the feed inlet, the bottom end of the shell is fixedly connected with a hydraulic cylinder, the upper end of the hydraulic cylinder is fixedly connected with a chute, a sliding block is arranged inside the chute, one end of the sliding block is tightly attached to a first spring, the upper end of the sliding block is fixedly connected with a rotating pin, one end of the rotating pin is fixedly connected with a filter screen, a first guide groove is formed in the upper end of the chute, one end of the shell is fixedly connected with a first bearing, the inside of the first bearing is fixedly connected with a connecting pipe, and one end of the connecting pipe is fixedly connected with a sponge; paper pulp is filled into the shell, the hydraulic cylinder is started to move upwards, the hydraulic cylinder moves upwards to drive the sliding groove to move upwards, and the sliding groove moves upwards to drive the filter screen to move upwards.

Specifically, the stirring mechanism comprises a rotating pin, one end of the rotating pin is fixedly connected with a hydraulic cylinder, the rotating pin is tightly attached to a drum, the rotating pin is arranged in a second guide groove, the side wall of the drum is fixedly connected with a fixed rod, the side wall of the drum is fixedly connected with a stirring rod, one end of the drum is fixedly connected with a second bearing, and the side wall of the second bearing is fixedly connected with a shell; the pneumatic cylinder upward movement drives rotatory round pin upward movement in the time, and rotatory round pin upward movement drives the cask and rotates, and the cask rotates and drives the puddler rotation, and the puddler rotates and stirs the paper pulp of shell inside evenly.

Specifically, the rotating mechanism comprises a motor, one end of the motor is fixedly connected with the shell, one end of the motor is fixedly connected with a rotating shaft, one end of the rotating shaft is fixedly connected with the round block, the side wall of the round block is fixedly connected with a first connecting rod, one end of the first connecting rod is fixedly connected with a second connecting rod, one end of the second connecting rod is fixedly connected with the extrusion plate, and the extrusion plate is arranged; the starter motor rotates, and the motor rotates and drives the pivot and rotate, and the pivot rotates and drives the disk clockwise rotation, and the disk clockwise rotation drives the first connecting rod clockwise turning, and the first connecting rod rotates and drives the second connecting rod and rotate, and the second connecting rod rotates and drives the stripper plate and rotate.

Specifically, the extrusion mechanism comprises an arc-shaped plate, one end of the arc-shaped plate is fixedly connected with a first connecting rod, the upper end of the arc-shaped plate is attached to a twisting pin, the side wall of the first connecting rod is fixedly connected with a first stop block, the first stop block is arranged in a sleeve, the side wall of the sleeve is fixedly connected with the side wall of the round block, one end of the first stop block is tightly attached to a second spring, and one end of the extrusion plate is fixedly connected with a second stop block; the paper pulp hot pressing device comprises a first connecting rod, a torsion pin, a first stop block, a second stop block, a sliding block, a rotating pin, a sliding block and a pressing plate, wherein the first connecting rod rotates and drives the arc plate to rotate simultaneously, the arc plate can be contacted with the torsion pin to be extruded when rotating to the top end, the arc plate moves downwards to drive the first stop block to move downwards, the first stop block moves downwards when rotating to the lower end, the second stop block rotates clockwise around a round block, the second stop block can push a filter screen to move leftwards when moving to the lowest point, the filter screen moves leftwards to drive the rotating pin to move leftwards, the sliding block moves leftwards to drive the sliding block to move leftwards, the sliding block moves leftwards to compress the first spring, so that paper pulp at the upper end of the filter screen is hot pressed by the downward movement of the pressing plate, the extruded paper pulp is absorbed at the upper end of the pressing plate through a connecting pipe after the paper pulp is hot pressed by the pressing plate, when the highest point of the arc plate leaves the torsion pin, the second spring can drive the pressing plate to move upwards, so that the pressing plate can be arranged, and a mechanical hand is arranged at the upper end of the equipment to quickly to take a material quickly.

The invention has the beneficial effects that:

(1) According to the paper pulp hot-pressing system for papermaking, paper pulp is poured through the feeding hole, the hydraulic cylinder is started to move upwards, the hydraulic cylinder moves upwards to drive the filter screen to move upwards, so that more paper pulp is stored at the upper end of the filter screen, and the stirring rod is driven to rotate in the upward movement process of the hydraulic cylinder to stir and mix the paper pulp in the filter screen uniformly.

(2) According to the paper pulp hot-pressing system for papermaking, the motor is started to rotate, the motor rotates to drive the round block to rotate, the round block rotates to drive the extrusion plate to carry out hot pressing on paper pulp at the upper end of the filter screen, and after the extrusion plate carries out hot pressing on the paper pulp, air suction is carried out through the connecting pipe to adsorb the extruded paper pulp at the upper end of the extrusion plate.

(3) According to the paper pulp hot-pressing system for papermaking, when the highest point of the arc-shaped plate just leaves the torsion pin, the second spring drives the extrusion plate to move upwards, so that hot pressing can be rapidly performed on paper pulp, and meanwhile, a mechanical arm is arranged at the upper end of the equipment to rapidly take materials at the opening.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure provided by the present invention;

FIG. 2 is a cross-sectional view of the overall structure shown in FIG. 1;

FIG. 3 is a schematic view of the connection of the arcuate plate and the twist pin shown in FIG. 2;

FIG. 4 is a schematic view of the connection structure between the sliding block and the first spring shown in FIG. 2;

FIG. 5 is a schematic view of the connection structure of the rotation pin and the filter net shown in FIG. 2;

FIG. 6 is a schematic view of a connection structure of the first bearing and the connection pipe shown in FIG. 2;

FIG. 7 is an enlarged view of the portion B shown in FIG. 2;

FIG. 8 is a schematic view of the connection structure of the motor and the rotating shaft shown in FIG. 2;

FIG. 9 is an enlarged view of portion A of FIG. 2;

fig. 10 is a schematic view of a connection structure of the first stopper and the sleeve shown in fig. 2.

In the figure: 1. a lifting mechanism; 11. a housing; 12. an opening; 13. a feed inlet; 14. a hydraulic cylinder; 15. a chute; 16. a slider; 17. a first spring; 18. a rotation pin; 19. a filter screen; 110. a first guide groove; 111. a first bearing; 112. a connecting pipe; 113. sponge; 2. a stirring mechanism; 21. a rotation pin; 22. a barrel; 23. a second guide groove; 24. fixing the rod; 25. a stirring rod; 26. a second bearing; 3. a rotation mechanism; 31. an electric motor; 32. a rotating shaft; 33. a round block; 34. a first connecting rod; 35. a second connecting rod; 36. a compression plate; 4. an extrusion mechanism; 41. an arc-shaped plate; 42. twisting the pin; 43. a first stopper; 44. a sleeve; 45. a second spring; 46. a second stop.

Detailed Description

In order to make the objects, technical means and advantages of the embodiments of the present invention clearer and more fully describe the technical solutions in the embodiments of the present invention, it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a paper pulp hot-pressing system for papermaking, and solves the technical problems that in the existing paper pulp hot-pressing process, a paper blank is made of paper pulp by a paper pulp filter screen, then hot pressing is carried out, automatic hot pressing and blanking are required to be realized in the large-batch paper pulp hot-pressing production process, and the traditional paper pulp hot-presses the paper pulp one by one through a hot pressing plate in the hot-pressing process, so that the speed is low and the efficiency is low;

in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: pouring paper pulp through a feeding hole, starting a hydraulic cylinder to move upwards, driving the filter screen to move upwards by the upward movement of the hydraulic cylinder, and storing more paper pulp at the upper end of the filter screen, driving a stirring rod to rotate in the upward movement process of the hydraulic cylinder to stir and mix the paper pulp inside uniformly, starting a motor to rotate, driving a round block to rotate by the rotation of the motor, driving a squeezing plate to carry out hot pressing on the paper pulp at the upper end of the filter screen by the rotation of the round block, sucking air through a connecting pipe after the hot pressing on the paper pulp by the squeezing plate to adsorb the squeezed paper pulp at the upper end of the squeezing plate, and driving the squeezing plate to move upwards by a second spring when the highest point of the arc plate just leaves a twisting pin, so that the paper pulp can be quickly subjected to hot pressing, and meanwhile, a manipulator is arranged at the upper end of the device to quickly take materials at an opening;

in order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

As shown in fig. 1-10, the hot pressing system for paper pulp for papermaking according to the present invention comprises a lifting mechanism 1, a stirring mechanism 2, a rotating mechanism 3, and an extruding mechanism 4, wherein the stirring mechanism 2 is arranged at one end of the lifting mechanism 1, the rotating mechanism 3 is arranged at the upper end of the stirring mechanism 2, and the extruding mechanism 4 is arranged at one end of the rotating mechanism 3; paper pulp is poured in through the feeding hole 13, the hydraulic cylinder 14 is started to move upwards, the hydraulic cylinder 14 moves upwards to drive the filter screen 19 to move upwards, more paper pulp is stored at the upper end of the filter screen 19, the stirring rod 25 is driven to rotate in the upward movement process of the hydraulic cylinder 14 to stir and mix the paper pulp inside uniformly, the motor 31 is started to rotate, the motor 31 rotates to drive the round block 33 to rotate, the round block 33 rotates to drive the extrusion plate 36 to carry out hot pressing on the paper pulp at the upper end of the filter screen 19, the paper pulp is hot pressed by the extrusion plate 36, then the extruded paper pulp is adsorbed at the upper end of the extrusion plate 36 through suction of the connecting pipe 112, the twisting pin 42 is just left at the highest point of the arc plate 41, the second spring 45 drives the extrusion plate 36 to move upwards, the paper pulp can be quickly hot pressed by the aid of the device, and meanwhile, a mechanical hand is arranged at the upper end of the device to quickly take materials at the opening.

Specifically, the lifting mechanism 1 includes a housing 11, one end of the housing 11 is provided with an opening 12, one end of the housing 11 is fixedly connected with a feed port 13, the bottom end of the housing 11 is fixedly connected with a hydraulic cylinder 14, the upper end of the hydraulic cylinder 14 is fixedly connected with a chute 15, a sliding block 16 is arranged inside the chute 15, one end of the sliding block 16 is tightly attached to a first spring 17, the upper end of the sliding block 16 is fixedly connected with a rotating pin 18, one end of the rotating pin 18 is fixedly connected with a filter screen 19, the upper end of the chute 15 is provided with a first guide groove 110, one end of the housing 11 is fixedly connected with a first bearing 111, the inside of the first bearing 111 is fixedly connected with a connecting pipe 112, and one end of the connecting pipe 112 is fixedly connected with a sponge 113; paper pulp is filled in the shell 11, the hydraulic cylinder 14 is started to move upwards, the hydraulic cylinder 14 moves upwards to drive the chute 15 to move upwards, and the chute 15 moves upwards to drive the filter screen 19 to move upwards.

Specifically, the stirring mechanism 2 includes a rotation pin 21, one end of the rotation pin 21 is fixedly connected with the hydraulic cylinder 14, the rotation pin 21 is tightly attached to the drum 22, the rotation pin 21 is arranged in the second guide groove 23, the side wall of the drum 22 is fixedly connected with a fixing rod 24, the side wall of the drum 22 is fixedly connected with a stirring rod 25, one end of the drum 22 is fixedly connected with a second bearing 26, and the side wall of the second bearing 26 is fixedly connected with the housing 11; the hydraulic cylinder 14 moves upwards and simultaneously drives the rotating pin 21 to move upwards, the rotating pin 21 moves upwards to drive the barrel 22 to rotate, the barrel 22 rotates to drive the stirring rod 25 to rotate, and the stirring rod 25 rotates to stir the paper pulp in the shell 12 uniformly.

Specifically, the rotating mechanism 3 includes a motor 31, one end of the motor 31 is fixedly connected with the housing 11, one end of the motor 31 is fixedly connected with a rotating shaft 32, one end of the rotating shaft 32 is fixedly connected with a round block 33, a side wall of the round block 33 is fixedly connected with a first connecting rod 34, one end of the first connecting rod 34 is fixedly connected with a second connecting rod 35, one end of the second connecting rod 35 is fixedly connected with a squeezing plate 36, and the squeezing plate 36; the starting motor 31 rotates, the motor 31 rotates to drive the rotating shaft 32 to rotate, the rotating shaft 32 rotates to drive the round block 33 to rotate clockwise, the round block 33 rotates clockwise to drive the first connecting rod 34 to rotate clockwise, the first connecting rod 34 rotates to drive the second connecting rod 35 to rotate, and the second connecting rod 35 rotates to drive the extrusion plate 36 to rotate.

Specifically, the extruding mechanism 4 includes an arc-shaped plate 41, one end of the arc-shaped plate 41 is fixedly connected with a first connecting rod 34, the upper end of the arc-shaped plate 41 is attached to a torsion pin 42, the side wall of the first connecting rod 34 is fixedly connected with a first stop block 43, the first stop block 43 is arranged inside a sleeve 44, the side wall of the sleeve 44 is fixedly connected with the side wall inside the round block 33, one end of the first stop block 43 is tightly attached to a second spring 45, and one end of the extruding plate 36 is fixedly connected with a second stop block 46; when the first connecting rod 34 rotates and simultaneously drives the arc-shaped plate 41 to rotate, when the arc-shaped plate 41 rotates to the top end, the twisting pin 42 is contacted for extrusion, the arc-shaped plate 41 moves downwards to drive the first connecting rod 34 to move downwards, the first connecting rod 34 moves downwards to drive the first stop block 43 to move downwards, the first stop block 43 moves downwards to compress the second spring 45, when the extrusion plate 36 rotates to the lower end, the second stop block 46 moves downwards, the second stop block 16 rotates clockwise around the round block 33, the second stop block 46 pushes the filter screen 19 to move leftwards when moving to the lowest point, the filter screen 19 moves leftwards to drive the rotating pin 18 to move leftwards, the sliding block 18 moves leftwards to drive the sliding block 16 to move leftwards, the sliding block 16 moves leftwards to compress the first spring 17, so that the pulp at the upper end of the filter screen 19 is hot-pressed by the downward movement of the extrusion plate 36, the extruded pulp is sucked through the connecting pipe 112 after the pulp is hot-pressed by the extrusion plate 36, when the extrusion plate 36 leaves the arc-shaped plate 41 and leaves the twisting pin 42, so that the extrusion plate 36 moves upwards, and the opening is arranged at the upper end of the hot-pressing machine, and the quick-speed mechanical arm 12 is arranged at the upper end of the hot-pressing machine.

When the invention is used, paper pulp is filled in the shell 11, the hydraulic cylinder 14 is started to move upwards, the hydraulic cylinder 14 moves upwards to drive the chute 15 to move upwards, the chute 15 moves upwards to drive the filter screen 19 to move upwards, the hydraulic cylinder 14 moves upwards to drive the rotating pin 21 to move upwards, the rotating pin 21 moves upwards to drive the barrel 22 to rotate, the barrel 22 rotates to drive the stirring rod 25 to rotate, the stirring rod 25 rotates to uniformly stir the paper pulp in the shell 12, at the moment, the motor 31 rotates to drive the rotating shaft 32 to rotate, the rotating shaft 32 rotates to drive the round block 33 to rotate clockwise, the round block 33 rotates clockwise to drive the first connecting rod 34 to rotate clockwise, the first connecting rod 34 rotates to drive the second connecting rod 35 to rotate, the second connecting rod 35 rotates to drive the extrusion plate 36 to rotate, and the arc-shaped plate 41 rotates when the first connecting rod 34 rotates, the arc plate 41 contacts the twisting pin 42 to extrude when rotating to the top end, the arc plate 41 moves downwards to drive the first connecting rod 34 to move downwards, the first connecting rod 34 moves downwards to drive the first stop block 43 to move downwards, the first stop block 43 moves downwards to compress the second spring 45, the second stop block 46 moves downwards when the extrusion plate 36 rotates to the lower end, the second stop block 16 rotates clockwise around the round block 33, the second stop block 46 pushes the filter screen 19 to move leftwards when moving to the lowest point, the filter screen 19 moves leftwards to drive the rotating pin 18 to move leftwards, the rotating pin 18 moves leftwards to drive the sliding block 16 to move leftwards, the sliding block 16 moves leftwards to compress the first spring 17, so that the extrusion plate 36 moves downwards to carry out hot pressing on the paper pulp at the upper end of the filter screen 19, after the extrusion plate 36 carries out hot pressing on the paper pulp, the extruded paper pulp is absorbed at the upper end of the extrusion plate 36 through the connecting pipe 112, when the highest point of the arc-shaped plate 41 just leaves the twisting pin 42, the second spring 45 drives the extrusion plate 36 to move upwards, so that the pulp can be quickly hot-pressed, and meanwhile, a mechanical arm is arranged at the upper end of the device to quickly take materials from the opening 12.

The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A paper grade (stock) thick liquid hot pressing system which characterized in that: the device comprises a lifting mechanism (1), a stirring mechanism (2), a rotating mechanism (3) and an extrusion mechanism (4), wherein the stirring mechanism (2) is arranged at one end of the lifting mechanism (1), the rotating mechanism (3) is arranged at the upper end of the stirring mechanism (2), and the extrusion mechanism (4) is arranged at one end of the rotating mechanism (3);

rising mechanism (1) includes shell (11), shell (11) one end is equipped with opening (12), shell (11) one end and feed inlet (13) fixed connection, shell (11) bottom and pneumatic cylinder (14) fixed connection, pneumatic cylinder (14) upper end and spout (15) fixed connection, spout (15) inside is equipped with sliding block (16), sliding block (16) one end is closely laminated with first spring (17), sliding block (16) upper end and rotating pin (18) fixed connection, rotating pin (18) one end and filter screen (19) fixed connection, spout (15) upper end is equipped with first guide way (110), shell (11) one end and first bearing (111) fixed connection, inside and connecting pipe (112) fixed connection of first bearing (111), connecting pipe (112) one end and sponge (113) fixed connection.

The stirring mechanism (2) comprises a rotating pin (21), one end of the rotating pin (21) is fixedly connected with the hydraulic cylinder (14), the rotating pin (21) is tightly attached to the drum (22), the rotating pin (21) is arranged in the second guide groove (23), the side wall of the drum (22) is fixedly connected with a fixing rod (24), the side wall of the drum (22) is fixedly connected with a stirring rod (25), one end of the drum (22) is fixedly connected with a second bearing (26), and the side wall of the second bearing (26) is fixedly connected with the shell (11);

rotary mechanism (3) are including motor (31), motor (31) one end and shell (11) fixed connection, motor (31) one end and pivot (32) fixed connection, pivot (32) one end and yuan (33) fixed connection, yuan (33) lateral wall and head rod (34) fixed connection, head rod (34) one end and second connecting rod (35) fixed connection, second connecting rod (35) one end and stripper plate (36) fixed connection, stripper plate (36).

2. A system for hot pressing paper pulp for papermaking according to claim 1, characterized in that: extrusion mechanism (4) include arc (41), arc (41) one end and head rod (34) fixed connection, arc (41) upper end and wrench movement round pin (42) laminating, head rod (34) lateral wall and first dog (43) fixed connection, first dog (43) set up inside sleeve (44), sleeve (44) lateral wall and the inside lateral wall fixed connection of boss (33).

3. The system of claim 2, wherein: the extrusion mechanism (4) further comprises a second spring (45), one end of the first stop block (43) is tightly attached to the second spring (45), and one end of the extrusion plate (36) is fixedly connected with the second stop block (46).