CN215970824U - Lead core rod beating machine - Google Patents

Abstract

The utility model provides a lead core beating machine, and belongs to the technical field of pencil core preparation. The utility model solves the problem that the existing pencil lead making machine is easy to be brittle and broken in the process of preparing pencil leads. The rack of the lead core rod beating machine comprises an upper beam, an upright post and a lower platform, wherein the upper beam is arranged above the lower platform through an upright post, a main oil cylinder of a hydraulic system is fixedly arranged on the upper beam, a discharging system comprises a material cylinder, a discharging nozzle and a motor, the material cylinder is arranged on the lower platform and is positioned under a piston rod of the hydraulic system, one end of the discharging nozzle is rotatably connected below the material cylinder, a drain pan is fixedly arranged at the other end of the discharging nozzle, and the discharging nozzle is in chain transmission connection with an output shaft of the motor. According to the utility model, the traditional single-hole discharging is changed into the internal and external two-layer equal porous discharging according to the flowing characteristic of the material, the material is pressed out by using the pressure of the hydraulic press, the material compactness is effectively increased, and the original production efficiency is improved from 60 minutes/material to 20 minutes/material while the material compactness is ensured to meet the operation requirement.

Description

Lead core rod beating machine

Technical Field

The utility model relates to a lead core beating machine, and belongs to the technical field of pencil core preparation.

Background

Because the pencil lead has lower strength and is easy to brittle fracture, part of the pencil lead is not easy to form after being pressed into the pencil lead in the manufacturing process, and the strength and the toughness of the part of the pencil lead after the pencil lead is manufactured are insufficient; the appearance index does not meet the standard value range. Therefore, it is necessary to provide a lead core rod-making machine which can improve the product quality, the quality stability and the operation efficiency on the premise of meeting various requirements of the national standard of the general-grade pencil core.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lead core beating machine, aiming at solving the problems of lower strength and easy brittle fracture in the existing lead core forming process.

The technical scheme of the utility model is as follows:

the utility model provides a lead core rod beating machine, includes frame, hydraulic system and discharge system, the frame include upper beam 3, stand 8 and lower platform 11, stand 8 is installed respectively to the four corners of lower platform 11, upper beam 3 passes through stand 8 and installs the top at platform 11 down, hydraulic system's master cylinder fixed mounting is in upper beam 3, discharge system includes material jar 7, ejection of compact 9 and motor 10, ejection of compact jar 7 fixed mounting is on platform 11 down, ejection of compact jar 7 is located hydraulic system's piston rod 4 under, the one end of ejection of compact mouth 9 is rotated and is connected in the below of material jar 7, the other end fixed mounting bushing of ejection of compact mouth 9, ejection of compact mouth 9 is chain drive connection with the output shaft of motor 10.

Further, the outer side of the discharging nozzle 9 is processed with teeth along the circumferential direction, and the teeth are in chain transmission connection with the output shaft of the motor 10.

Further limited, the drain pan is a porous structure.

Further limiting, the drain pan adopts an inner layer and an outer layer which are equally divided into discharge holes.

Further limiting, five holes are equally divided on a circle which takes the center as the center and has the diameter of 60mm on the drain pan; five equally divided holes are formed in a circle with the diameter of 35 mm.

More particularly, the aperture of the hole is 12 mm.

Further, a piston rod 4 of the hydraulic system is fixed on a center sill 5, the center sill 5 is sleeved on an upright post 8, and the center sill 5 moves along the upright post 8 along with the piston rod 4.

Further defined, the lower end of the piston rod 4 is fitted with an upper punch 6.

Further, the upper punch 6 is correspondingly matched with the material cylinder 7.

Further, the axes of the piston rod 4, the upper punch 6 and the material cylinder 7 are coincident.

The lead core rod beating machine is used for preparing a common-grade graphite core, and the common-grade graphite core is prepared from the following raw materials in percentage by mass:

20-50% of clay, 30-60% of graphite, 5-12% of syrup and 2-10% of talcum powder;

the preparation method specifically comprises the following steps:

step 1, kneading materials;

fully mixing the raw materials by a kneading machine for later use;

step 2, beating the rod;

adding the fully mixed raw materials in the step (1) into a rod making machine, and extruding the raw materials into cylindrical short rods with consistent diameters and lengths through a porous die;

step 3, forming;

adding the cylindrical short rod obtained in the step 2 into a forming machine to form a lead core;

step 4, drying;

putting the lead core obtained in the step 3 into a drying furnace for drying until the moisture of the lead core is 4-6%;

step 5, sintering;

putting the lead core dried in the step 4 into a high-temperature furnace for high-temperature sintering, wherein the sintering temperature is 1000-1100 ℃, and the sintering time is 8-12 h;

step 6, oil immersion;

and (5) placing the lead core sintered in the step 5 into an oil pan to be soaked for 1-12 hours to obtain the common-grade graphite core.

Further limit, the medium oil in the oil pan is beef tallow.

Further defined, the strength of the cylindrical short rod obtained in step 2 was 127-157 MPa.

Further limiting, the drying temperature in step 4 is 180-.

The utility model has the beneficial effects that: according to the utility model, the traditional single-hole discharging is changed into the inner-outer layer equal multi-hole discharging according to the flowing characteristic of the material, the material is pressed out by using the pressure of the hydraulic press, the material compactness is effectively increased, and the original production efficiency is improved from 60 minutes/material to 20 minutes/material while the material compactness is ensured to meet the operation requirement. In addition, the utility model adds a rod making process in the traditional pencil lead preparation process, can effectively improve the compactness of semi-finished products, reduces the lead breaking rate from 18 percent to 7 percent in the conventional variety forming process, and effectively improves various indexes of final products.

Drawings

FIG. 1 is a front view of a rod making machine;

FIG. 2 is a side view of the rod making machine;

FIG. 3 is a top view of the rod making machine;

FIG. 4 is a schematic view of a discharge nozzle bushing;

in the figure, 1-a main oil cylinder, 2-an upper beam locking nut, 3-an upper beam, 4-a piston rod, 5-a middle beam, 6-an upper punch, 7-a material cylinder, 8-an upright post, 9-a discharging device, 10-a motor, 11-a lower platform and 12-a lower locking nut.

Detailed Description

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings:

example 1:

the present embodiment is explained with reference to fig. 1 to 4.

The rod beating machine adopted in the implementation comprises a rack, a hydraulic system and a discharging system, wherein the rack comprises an upper beam 3, an upright post 8 and a lower platform 11, the four corners of the lower platform 11 are respectively provided with the upright post 8, the upper beam 3 is arranged above the lower platform 11 through the upright post 8, a main oil cylinder 1 of the hydraulic system is fixedly arranged on the upper beam 3, the discharging system comprises a material cylinder 7, a discharging nozzle 9 and a motor 10, the discharging cylinder 7 is fixedly arranged on the lower platform 11, the discharging cylinder 7 is positioned under a piston rod 4 of the hydraulic system, one end of the discharging nozzle 9 is rotatably connected below the material cylinder 7, the other end of the discharging nozzle 9 is fixedly provided with a leakage tray which adopts an inner-layer and outer-layer equally-divided porous structure, the outer side of the discharging nozzle 9 is processed with teeth along the circumferential direction, and the teeth are in chain transmission connection with an output shaft of the motor 10; a piston rod 4 of the hydraulic system is fixed on a middle beam 5, the middle beam 5 is sleeved on an upright post 8, the middle beam 5 moves along the upright post 8 along with the piston rod 4, an upper punch 6 is installed at the lower end of the piston rod 4, and the upper punch 6 is correspondingly matched with a material cylinder 7; the axes of the piston rod 4, the upper punch 6 and the material cylinder 7 are coincident. So set up, when beating the excellent machine operation, well roof beam 5 drives stamping 6 down, impresses the material jar 7 of having added the raw materials, along with pressure constantly increases, and the raw materials gets into ejection of compact 9, and ejection of compact 9 is rotatory under the drive of motor 10 and chain to be that the raw materials is rotatory stirs out, obtains cylindrical stub lead.

Five equant holes are formed in a circle with the center as the circle center and the diameter of 60mm on the drain pan; five holes are equally divided on a circle with the diameter of 35mm, and the aperture is 12 mm. According to the arrangement, the inner layer and the outer layer of the leakage disc are equally divided into the discharge holes according to the flowing characteristic of the material, so that the compactness of the material is ensured to meet the operation requirement, and meanwhile, the original working efficiency is improved from 60 minutes/material to 20 minutes/material through the multi-aperture design.

Example 2:

preparing a common-grade graphite core by using the rod making machine:

the common-grade graphite core prepared in the embodiment is prepared from the following raw materials in percentage by mass: 30% of clay, 55% of graphite, 5% of syrup and 10% of talcum powder.

The preparation process comprises the following steps:

step 1, kneading materials;

fully mixing the raw materials by a kneading machine for later use;

step 2, beating the rod;

adding the fully mixed raw materials in the step 1 into a rod making machine, and extruding the raw materials by a porous die to form a cylindrical short rod with the diameter of 12mm and the length of 40mm, wherein the strength of the obtained cylindrical short rod is 127-157 Mpa;

step 3, forming;

adding the cylindrical short rod obtained in the step 2 into a forming machine to form a lead core;

step 4, drying;

putting the lead core obtained in the step (3) into a drying furnace for drying until the moisture of the lead core is 4% (a specific value);

step 5, sintering;

putting the lead core dried in the step 4 into a high-temperature furnace for high-temperature sintering, wherein the sintering temperature is 1000 ℃, and the sintering time is 9 hours;

step 6, oil immersion;

and (3) placing the lead core sintered in the step (5) into an oil pan with medium oil as beef tallow to be soaked for 4 hours to obtain the common-grade graphite core, wherein the lead breaking rate of the common-grade graphite core is 7%.

Comparative example 1:

this comparative example differs from example 1 in that:

the leakage plate of the rod-beating machine for the comparative example is used for single-hole discharging, the aperture is 12mm, the rest parameter setting and the operation steps are completely the same as those of the embodiment 1, and the comparative example 1 show that the rod-beating process of materials with the same quality is completed, after the single-hole discharging is changed into multi-hole discharging, the production efficiency is improved from 60 minutes/material to 20 minutes/material.

Comparative example 2:

this comparative example differs from example 1 in that:

according to the comparative example, the rod beating process is omitted, the rest parameter setting and operation steps are completely the same as those in the example 1, and the lead crushing rate of the final obtained common-grade graphite core in the comparative example 2 is 18%, so that the rod beating process is added, the compactness of the semi-finished product material can be effectively improved, and the lead crushing rate in the forming process is reduced.

The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a lead core rod beating machine, a serial communication port, including frame, hydraulic system and discharge system, the frame include upper beam (3), stand (8) and lower platform (11), stand (8) are installed respectively to the four corners of lower platform (11), upper beam (3) are installed in the top of platform (11) down through stand (8), hydraulic system's master cylinder (1) fixed mounting is in upper beam (3), discharge system includes material jar (7), ejection of compact mouth (9) and motor (10), material jar (7) fixed mounting is on lower platform (11), material jar (7) are located hydraulic system's piston rod (4) under, the one end of ejection of compact mouth (9) is rotated and is connected in the below of material jar (7), the other end fixed mounting drain pan of ejection of compact mouth (9), ejection of compact mouth (9) are chain drive connection with the output shaft of motor (10).

2. The lead core rod making machine according to claim 1, wherein the outer side of the discharging nozzle (9) is provided with teeth along the circumferential direction, and the teeth are in chain transmission connection with the output shaft of the motor (10).

3. The lead core rod making machine according to claim 1, wherein said bushing is of a porous structure.

4. The lead core rod beating machine according to claim 3, wherein the bushing adopts two equally-divided discharging holes in the inner layer and the outer layer.

5. The lead core rod punching machine according to claim 4, wherein the bushing is provided with five equally-divided holes on a circle with the center as the center and the diameter of 60 mm; five equally divided holes are formed in a circle with the diameter of 35 mm.

6. The lead core rod making machine according to claim 5, wherein the diameter of the hole is 12 mm.

7. The lead core rod beating machine according to claim 1, characterized in that a piston rod (4) of the hydraulic system is fixed on a center sill (5), the center sill (5) is sleeved on the upright post (8), and the center sill (5) moves along the upright post (8) along with the piston rod (4).

8. The lead rod making machine according to claim 1, wherein the lower end of the piston rod (4) is provided with an upper punch (6).

9. The lead core rod making machine according to claim 8, wherein the upper punch (6) is correspondingly matched with the material cylinder (7).

10. The lead core rod making machine according to claim 9, wherein the axes of the piston rod (4), the upper punch (6) and the material cylinder (7) are coincident.

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