A pelletizer for preparing lead pellets and a control method thereof

Abstract

The present invention belongs to the field of lead pellet preparation equipment, and specifically relates to a pelletizer for lead pellet preparation, including a cold rolling mechanism and a lead pellet forming mechanism, the lead pellet forming mechanism including a forming roller and a forming support plate, the forming support plate is supported on the lower side of the forming roller in an arc-shaped structure, the forming roller is provided with a first forming groove surrounding its circumference, the forming support plate is provided with a second forming groove, the first forming groove and the second forming groove are buckled and matched to form a rolling groove body with a circular cross-section, the granular lead material enters the rolling groove body and is rolled into spherical lead pellets by relative rotation of the forming roller and the forming support plate, and the present invention also discloses a control method for the pelletizer for lead pellet preparation. The present invention adopts the forming roller and the forming support plate to jointly form the rolling groove body, so that the lead pellets can form a relatively mixed spherical structure by rolling, thereby improving the uniformity of the appearance of the lead pellets, improving its commerciality, and improving the oxidation reaction efficiency during the preparation of lead powder.

Description

Technical Field

[0001] The invention belongs to the field of lead pellet preparation equipment, and in particular relates to a pelletizer for lead pellet preparation and a control method thereof. Background Art

[0002] Lead oxide powder is required when preparing electrodes for lead-acid batteries. The current preparation process is to cold-roll the lead ingots and feed them into extrusion rollers. The lead material is squeezed and cut into lead particles through the holes reserved on the roller shaft of the extrusion rollers. Each lead particle weighs approximately 100-120g. The lead particles are ball-milled in the oxygen environment of a lead powder machine to produce lead powder through an oxidation reaction.

[0003] During ball milling production, an oxide layer gradually forms on the surface of the lead particles. The oxide layer on the surface of the lead particles is ground off to form lead powder through mutual grinding between the lead particles in the ball mill, and the fresh surface of the lead particles is exposed again to continue to generate an oxide layer. The lead particles formed by extrusion by the extrusion rollers are approximately prism-shaped cubes with a small top and a large bottom. Lead particles of this shape roll poorly in the ball mill. When an oxide layer is generated on the surface of the lead particles, it is not easy to grind out a fresh surface, which restricts the continuation of the oxidation reaction. In addition, due to the mutual tearing of the extrusion rollers, the edges of the lead particles are rough when they are separated from the cross section, and may even fall off, resulting in the appearance of the output lead particles being broken and having poor commercial quality. Summary of the invention

[0004] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a pelletizer for preparing lead pellets and a control method thereof, which can round the lead pellets by rolling them into balls, thereby improving the regularity of the shape of the lead pellets and facilitating the preparation of lead powder in the later stage.

[0005] The specific technical scheme adopted by the present invention is: a pelletizer for preparing lead pellets, including a cold rolling mechanism and a lead pellet molding mechanism, the output end of the cold rolling mechanism is connected to the input end of the lead pellet molding mechanism, a rolling and cutting mechanism is added between the cold rolling mechanism and the lead pellet molding mechanism, the lead pellet molding mechanism includes a molding roller and a molding support plate, the molding roller has the freedom to rotate relative to the molding support plate, the molding support plate is supported on the lower side of the molding roller in an arc-shaped structure, the side of the molding roller rotating into the molding support plate is the feeding side, and the side rotating out is the discharging side, the molding roller is provided with a first molding surrounding its circumference The forming support plate is provided with a second forming groove, the first forming groove and the second forming groove are buckled together to form a rolling groove body with a circular cross-section, and the rolling groove body is arranged in multiple groups along the axial direction of the forming roller. The cold rolling mechanism rolls the lead ingot into sheet lead material, and the rolling and cutting mechanism cuts the sheet lead material into strip lead material. The strip lead material enters between the forming support plate and the forming roller along the feeding side of the forming support plate, and is cut into granular lead material at the entrance of the rolling groove body with the help of the rotation of the forming roller relative to the forming support plate. The granular lead material enters the rolling groove body and is rolled into spherical lead particles with the help of the relative rotation of the forming roller and the forming support plate.

[0006] The cold rolling mechanism comprises a cold rolling frame and an upper rolling roller and a lower rolling roller arranged on the cold rolling frame, and a gap for rolling lead ingots is formed between the upper rolling roller and the lower rolling roller.

[0007] The cold rolling mechanism also includes an input conveyor belt arranged at its input end, and an output conveyor belt arranged at its output end. A front slide and a rear slide are respectively arranged on both sides of the rolling position of the upper roller and the lower roller. The lead ingot is pushed onto the front slide with the help of the input conveyor belt, and slides on the front slide to the rolling position of the upper roller and the lower roller under the push of subsequent lead ingots. The rear slide receives the rolled sheet lead material and pushes it onto the output conveyor belt under the continuous push of subsequent sheet lead material.

[0008] The rolling and cutting mechanism includes a lower knife seat and an upper knife seat. The upper knife seat has the freedom to reciprocate and extend relative to the lower knife seat with the help of a rolling and cutting telescopic cylinder. The upper knife seat is provided with a shearing blade and a limit block. The sheet lead material extends out along the surface of the upper knife seat, is suspended in the air and abuts against the limit block. The upper knife seat moves downward with the help of the rolling and cutting telescopic cylinder, and the shearing blade is used to cut the extended sheet lead material into strip lead material. The strip lead material is sent to the input end of the lead particle forming mechanism with the help of a transfer conveyor belt.

[0009] The lower knife seat is fixed to the ground by means of a support column, the limit block is arranged on the rear side of the shear blade, the shear blade, the limit block and the lower knife seat together form a groove structure for cutting the strip lead material, the lower knife seat extends relative to the support column on the output side of the sheet lead material, and the support column is provided with a feeding slope on the lower side of the suspended section, and the feeding slope receives the fallen strip lead material and guides it to the transfer conveyor belt.

[0010] The forming support plate is provided with a feeding lip, and the feeding lip and the side wall of the forming roller form a feeding side of a trumpet-shaped structure.

[0011] The second forming groove is provided with raised second friction points, and the second friction points are arranged in an array along the groove body direction of the second forming groove.

[0012] The lead shot molding mechanism further comprises a forced feeding mechanism, which comprises a driving roller and a feeding chain wrapped around the driving roller and the molding roller, the feeding chain is provided with a pushing ball, the driving roller is provided with a driving groove matching the shape of the pushing ball, and the driving roller has the freedom to drive the feeding chain to rotate by means of a motor;

[0013] The feeding chain is wound around the forming roller along the first forming groove of the rolling and rubbing groove body, and the diameter of the pushing ball is smaller than the inner diameter of the rolling and rubbing groove body.

[0014] The first forming groove is provided with first friction points, and the first friction points are arranged in two groups in an array along the groove body of the first forming groove. An inwardly concave receiving groove for accommodating a feeding chain is provided between the two groups of first friction points.

[0015] A control method for a pelletizer for preparing lead pellets comprises the following steps:

[0016] S1. The lead ingot is fed into the input end of the cold rolling mechanism and rolled into a sheet of lead material by the cold rolling mechanism;

[0017] S2. The sheet lead material is led out from the output end of the cold rolling mechanism and cut into strip lead material by means of a rolling and cutting mechanism;

[0018] S3. The strip lead material is fed into the input end of the lead pellet forming mechanism in a horizontal form. With the help of the rotation of the forming roller, the groove side of the adjacent rolling groove body shears and breaks the strip lead material into granular lead material.

[0019] S4. The feeding chain rotates so that the pushing balls on the feeding chain push the granular lead material into the rolling groove body. The linear speed of the feeding chain is lower than the linear speed of the forming roller.

[0020] S5. The spherical lead particles that have been rolled in the rolling trough are outputted at the discharge side of the forming support plate to complete the preparation.

[0021] The beneficial effects of the present invention are:

[0022] The present invention adopts a forming roller and a forming support plate to jointly form a rolling trough body, so that the lead particles can form a relatively mixed spherical structure through rolling, thereby improving the appearance uniformity of the lead particles, improving their commercial quality, and also helping to improve the oxidation reaction efficiency when preparing lead powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0025] Figure 3 It is a schematic diagram of the lead shot forming mechanism from a top view;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of part B;

[0027] Figure 5 for Figure 3 A magnified schematic diagram of part C;

[0028] Figure 6 is a schematic diagram of a forming roller;

[0029] Figure 7 is a schematic diagram of a forming pallet;

[0030] In the accompanying drawings, 1, forming roller, 2, forming support plate, 100, spherical lead particles, 101, first forming groove, 102, second forming groove, 3, containing groove, 4, rolling groove body, 5, cold rolling frame, 6, upper roller, 7, lower roller, 8, input conveyor belt, 9, output conveyor belt, 10, front slide, 11, rear slide, 12, lower knife seat, 13, upper knife seat, 14, rolling and cutting telescopic cylinder, 15, shearing blade, 16, limit block, 17, transfer conveyor belt, 18, support column, 19, feeding slope, 20, feeding lip, 21, second friction point, 22, driving roller, 23, feeding chain, 24, pushing ball, 25, driving groove, 26, first friction point. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0032] Specific implementation examples Figure 1As shown, the present invention is a pelletizer for preparing lead pellets, comprising a cold rolling mechanism and a lead pellet forming mechanism, wherein the output end of the cold rolling mechanism is connected to the input end of the lead pellet forming mechanism, a rolling and cutting mechanism is additionally provided between the cold rolling mechanism and the lead pellet forming mechanism, the lead pellet forming mechanism comprises a forming roller 1 and a forming support plate 2, the forming roller 1 has a degree of freedom to rotate relative to the forming support plate 2, the forming support plate 2 is supported on the lower side of the forming roller 1 in an arc-shaped structure, the side of the forming roller 1 rotating into the forming support plate 2 is the feeding side, and the side rotating out is the discharging side, the forming roller 1 is provided with a first forming groove 101 surrounding its circumference, the forming support plate 2 A second forming groove 102 is arranged on it, and the first forming groove 101 and the second forming groove 102 are snap-fitted together to form a rolling groove body 4 with a circular cross-section. The rolling groove body 4 is arranged in multiple groups along the axial direction of the forming roller 1. The cold rolling mechanism rolls the lead ingot into sheet lead material, and the rolling and cutting mechanism cuts the sheet lead material into strip lead material. The strip lead material enters between the forming support plate 2 and the forming roller 1 along the feeding side of the forming support plate 2, and is cut into granular lead material at the entrance of the rolling groove body 4 with the help of the rotation of the forming roller 1 relative to the forming support plate 2. The granular lead material enters the rolling groove body 4 and is rolled into spherical lead particles 100 with the help of the relative rotation of the forming roller 1 and the forming support plate 2.

[0033] The present invention provides a forming roller 1 and a forming support plate 2, and forms a rolling rubbing trough 4 with the help of the two, so that the strip lead material can be rubbed into granular lead material and finally rubbed into spherical lead particles, thereby improving the uniformity and efficiency of the oxidation reaction during the subsequent grinding of the lead powder preparation, improving the uniformity of the appearance of the lead particles, and improving their commercial quality.

[0034] Further, such as Figure 1 As shown, the cold rolling mechanism includes a cold rolling frame 5 and an upper rolling roller 6 and a lower rolling roller 7 arranged on the cold rolling frame 5, and a gap for rolling lead ingots is formed between the upper rolling roller 6 and the lower rolling roller 7.

[0035] The upper roller 6 and the lower roller 7 rotate synchronously with the help of gears, and the upper roller 6 and the lower roller 7 are driven to rotate by a motor. After rolling, the lead ingot is formed into a sheet of lead material with a set thickness, which is convenient for subsequent cutting into strips of lead material with a diameter that meets the requirements.

[0036] Further, such as Figure 1 As shown, the cold rolling mechanism also includes an input conveyor belt 8 arranged at its input end, and an output conveyor belt 9 arranged at its output end. A front slide 10 and a rear slide 11 are respectively arranged on both sides of the rolling position of the upper roller 6 and the lower roller 7. The lead ingot is pushed onto the front slide 10 with the help of the input conveyor belt 8, and slides on the front slide 10 to the rolling position of the upper roller 6 and the lower roller 7 under the push of subsequent lead ingots. The rear slide 11 receives the rolled sheet lead material and pushes it onto the output conveyor belt 9 under the continuous push of subsequent sheet lead material.

[0037] When in use, the cold rolling mechanism of the present invention places the lead ingots one by one on the input conveyor belt 8, and feeds them to the rolling position of the upper roller 6 and the lower roller 7 with the help of the input conveyor belt 8. The front slide 10 and the rear slide 11 are respectively connected to the rolling position of the upper roller 6 and the lower roller 7 to support the lead ingots, so as to prevent the lead ingots from damaging the conveyor belt due to the up and down swinging of rolling.

[0038] Further, such as Figure 1 As shown, the rolling and cutting mechanism includes a lower knife seat 12 and an upper knife seat 13. The upper knife seat 13 has the freedom to reciprocate and extend relative to the lower knife seat 12 by means of a rolling and cutting telescopic cylinder 14. The upper knife seat 13 is provided with a shearing blade 15 and a limit block 16. The sheet lead material extends out along the surface of the upper knife seat 13, is suspended in the air and abuts against the limit block 16. The upper knife seat 13 moves downward by means of the rolling and cutting telescopic cylinder 14, and the shearing blade 15 cuts the extended sheet lead material into strip lead material. The strip lead material is fed to the input end of the lead pellet forming mechanism by means of a transfer conveyor belt 17.

[0039] The lower knife seat 12 is fixed to the ground by means of a support column 18, the limit block 16 is arranged on the rear side of the chopping blade 15, the chopping blade 15, the limit block 16 and the lower knife seat 12 together form a groove structure for cutting strip lead material, the lower knife seat 12 extends relative to the support column 18 on the output side of the sheet lead material, and the support column 18 is provided with a feeding slope 19 on the lower side of the suspended section, and the feeding slope 19 receives the fallen strip lead material and guides it to the transfer conveyor belt 17.

[0040] like Figure 1 As shown, a horizontal limiting roller is also provided above the lower knife seat 12 for pressing on the sheet lead material to prevent the sheet lead material from tipping over during the cutting process.

[0041] As the lead sheet advances, Figure 1 As shown, the sheet lead material slides onto the upper and lower knife seats 12, at which time the upper knife seat 13 is in a raised state, and the end of the sheet lead material is inserted into the lower side of the shearing blade 15 and abuts against the limit block 16, thereby realizing the setting of the cutting length of the sheet lead material, and then the upper knife seat 13 moves downward, and the protruding part of the sheet lead material is cut off with the help of the shearing blade 15 to form a strip lead material, the cross-section of the strip lead material is approximately square, which is convenient for subsequent kneading into a ball.

[0042] Further, such as Figure 1 and Figure 7 As shown, a feed lip 20 is provided on the forming support plate 2 , and the feed lip 20 and the side wall of the forming roller 1 form a feeding side of a trumpet-shaped structure.

[0043] The strip lead material enters the feeding side of the trumpet-shaped structure, and is guided by the feeding lip 20 on the feeding side so that the strip lead material falls into the gap between the forming roller 1 and the forming support plate 2. As the forming roller 1 rotates, the friction and shearing action of the first forming groove 101 and the second forming groove 102 squeeze and rub the strip lead material lying in the gap, and finally cuts it off, forming block lead material that falls into the rolling and rubbing groove body 4. The block lead material further enters the inside of the rolling and rubbing groove body 4 to form a rolling and rubbing processing state, and finally becomes a ball.

[0044] Further, such as Figure 4 and Figure 7 As shown, the second molding groove 102 is provided with raised second friction points 21 , and the second friction points 21 are arranged in an array along the groove body direction of the second molding groove 102 .

[0045] The second friction point 21 can increase the friction force of the second forming groove 102, forcing the block lead material to roll in the rolling groove body 4, thereby forming a round shape.

[0046] Further, such as Figure 1 As shown, the lead shot molding mechanism further includes a forced feeding mechanism, which includes a driving roller 22 and a feeding chain 23 wrapped around the driving roller 22 and the molding roller 1, the feeding chain 23 is provided with a pushing ball 24, the driving roller 22 is provided with a driving groove 25 matching the shape of the pushing ball 24, and the driving roller 22 has the freedom to drive the feeding chain 23 to rotate by means of a motor;

[0047] The feeding chain 23 is wound around the forming roller 1 along the first forming groove 101 of the rolling groove body 4 , and the diameter of the pushing ball 24 is smaller than the inner diameter of the rolling groove body 4 .

[0048] With the help of the driving groove 25 set on the driving roller 22 and clamped on the pushing ball 24, the feeding chain 23 is rotated, and the rotation direction of the feeding chain 23 is consistent with the rotation direction of the forming roller 1. The strip lead material can be forced to be broken into granular lead material by the pushing of the feeding ball, and the granular lead material is forced to enter the rolling trough body 4, thereby improving the feeding efficiency.

[0049] Furthermore, the first molding groove 101 is provided with first friction points 26, and the first friction points 26 are arranged in two groups in an array along the groove body of the first molding groove 101, and an inwardly concave receiving groove 3 for accommodating the feeding chain 23 is provided between the two groups of first friction points 26.

[0050] The first friction point 26 and the second friction point 21 have the same function of increasing friction, forcing the lead particles to roll, and facilitating the molding of the lead particles. The feeding chain 23 is made of wire rope. In order to prevent the feeding chain 23 from excessively wearing the lead particles, the width of the accommodating groove 3 is set to be smaller than the diameter of the pushing ball 24, so that the feeding chain 23 is squeezed into the accommodating groove 3, and the pushing ball 24 is retained in the rolling groove body 4. The first friction point 26 and the second friction point 21 will form pits on the surface of the lead particles, thereby increasing the surface area of ​​the lead particles and facilitating the start and progress of the lead powder oxidation reaction.

[0051] The depth of the receiving groove 3 is greater than the diameter of the feeding chain 23, so that the receiving groove 3 forms a accommodating space for possible excess lead material, that is, a raised waistline is formed on the lead particles, which also helps to increase the surface area.

[0052] The present invention also discloses a control method for a pelletizer for preparing lead pellets, comprising the following steps:

[0053] S1. The lead ingot is fed into the input end of the cold rolling mechanism and rolled into a sheet of lead material by the cold rolling mechanism;

[0054] S2. The sheet lead material is led out from the output end of the cold rolling mechanism and cut into strip lead material by means of a rolling and cutting mechanism;

[0055] S3. The strip lead material is fed into the input end of the lead pellet forming mechanism in a horizontal form. With the help of the rotation of the forming roller 1, the groove side of the adjacent rolling groove body 4 shears and breaks the strip lead material into granular lead material.

[0056] S4. The feeding chain 23 rotates so that the pushing balls 24 on the feeding chain 23 push the granular lead material into the rolling trough 4. The linear speed of the feeding chain 23 is less than the linear speed of the forming roller 1.

[0057] S5. The spherical lead particles 100 that have been rolled in the rolling trough 4 are outputted at the discharge side of the forming support plate 2, and the preparation is completed.

[0058] The control method of the present invention discloses that the linear speed of the feeding chain 23 is less than the linear speed of the forming roller 1, so that the feeding chain 23 is forced to feed the granular lead material. Figure 2 As shown, with the help of the rotation of the forming roller 1, the kneaded spherical lead particles 100 gradually separate from the pushing balls 24 on the feeding chain 23, ensuring that the lead particles are smoothly rounded.

Claims

1. A pelletizer for preparing lead pellets, comprising a cold rolling mechanism and a lead pellet forming mechanism, wherein the output end of the cold rolling mechanism is connected to the input end of the lead pellet forming mechanism, and is characterized in that: A rolling and cutting mechanism is additionally provided between the cold rolling mechanism and the lead shot forming mechanism. The lead shot forming mechanism comprises a forming roller (1) and a forming support plate (2). The forming roller (1) has a degree of freedom to rotate relative to the forming support plate (2). The forming support plate (2) is supported on the lower side of the forming roller (1) in an arc-shaped structure. The side where the forming roller (1) rotates into the forming support plate (2) is the feeding side, and the side where the forming roller (1) rotates out is the discharging side. The forming roller (1) is provided with a first forming groove (101) surrounding the circumference thereof, and the forming support plate (2) is provided with a second forming groove (102). The first forming groove (101) and the second forming groove (102) are connected to each other. The grooves (102) are fitted together to form a rolling groove body (4) with a circular cross-section. The rolling groove body (4) is arranged in a plurality of groups along the axial direction of the forming roller (1). The cold rolling mechanism rolls the lead ingot into a sheet of lead material. The rolling and cutting mechanism cuts the sheet of lead material into strips of lead material. The strips of lead material enter between the forming support plate (2) and the forming roller (1) along the feeding side of the forming support plate (2) and are cut into granular lead material at the entrance of the rolling groove body (4) by the rotation of the forming roller (1) relative to the forming support plate (2). The granular lead material enters the rolling groove body (4) and is rolled into spherical lead particles (100) by the relative rotation of the forming roller (1) and the forming support plate (2). The rolling and cutting mechanism comprises a lower knife seat (12) and an upper knife seat (13). The upper knife seat (13) has the freedom to reciprocate and retract relative to the lower knife seat (12) by means of a rolling and cutting telescopic cylinder (14). The upper knife seat (13) is provided with a shearing blade (15) and a stop block (16). The sheet lead material extends out along the surface of the upper knife seat (13), is suspended in the air and abuts against the stop block (16). The upper knife seat (13) moves downward by means of the rolling and cutting telescopic cylinder (14), and the shearing blade (15) cuts the extended sheet lead material into strip lead material. The strip lead material is fed to the input end of the lead pellet forming mechanism by means of a transfer conveyor belt (17). The lower knife seat (12) is fixed to the ground by means of a support column (18), the limit block (16) is arranged at the rear side of the chopping blade (15), the chopping blade (15), the limit block (16) and the lower knife seat (12) together form a groove structure for cutting the strip lead material, the lower knife seat (12) extends relative to the support column (18) on the output side of the sheet lead material, and the support column (18) is provided with a feeding slope (19) on the lower side of the suspended section, and the feeding slope (19) receives the fallen strip lead material and guides it to the transfer conveyor belt (17); The forming support plate (2) is provided with a feed lip (20), and the feed lip (20) and the side wall of the forming roller (1) form a feed side with a trumpet-shaped structure.

2. A pelletizer for preparing lead pellets according to claim 1, characterized in that: The cold rolling mechanism comprises a cold rolling frame (5) and an upper rolling roller (6) and a lower rolling roller (7) arranged on the cold rolling frame (5), wherein a gap for rolling the lead ingot is formed between the upper rolling roller (6) and the lower rolling roller (7).

3. A pelletizer for preparing lead pellets according to claim 2, characterized in that: The cold rolling mechanism further comprises an input conveyor belt (8) arranged at its input end, and an output conveyor belt (9) arranged at its output end. A front slide (10) and a rear slide (11) are respectively arranged on both sides of the rolling position of the upper roller (6) and the lower roller (7). The lead ingot is pushed onto the front slide (10) by the input conveyor belt (8), and slides on the front slide (10) to the rolling position of the upper roller (6) and the lower roller (7) under the push of subsequent lead ingots. The rear slide (11) receives the rolled sheet lead material and pushes it onto the output conveyor belt (9) under the continuous push of subsequent sheet lead material.

4. A pelletizer for preparing lead pellets according to claim 1, characterized in that: The second forming groove (102) is provided with raised second friction points (21), and the second friction points (21) are arranged in an array along the groove body direction of the second forming groove (102).

5. A pelletizer for preparing lead pellets according to claim 1, characterized in that: The lead shot forming mechanism further comprises a forced feeding mechanism, the forced feeding mechanism comprising a driving roller (22) and a feeding chain (23) wrapped around the driving roller (22) and the forming roller (1), the feeding chain (23) being provided with a pushing ball (24), the driving roller (22) being provided with a driving groove (25) whose shape matches that of the pushing ball (24), the driving roller (22) having the freedom to drive the feeding chain (23) to rotate by means of a motor; The feed chain (23) is wound around the forming roller (1) along the first forming groove (101) of the rolling groove body (4), and the diameter of the pushing ball (24) is smaller than the inner diameter of the rolling groove body (4).

6. A pelletizer for preparing lead pellets according to claim 5, characterized in that: The first forming groove (101) is provided with first friction points (26), and the first friction points (26) are arranged in two groups in an array along the groove body of the first forming groove (101), and an inwardly concave receiving groove (3) for receiving the feeding chain (23) is provided between the two groups of first friction points (26).

7. The control method of a pelletizer for preparing lead pellets as claimed in claim 5, characterized in that: The following steps are included: S1. The lead ingot is fed into the input end of the cold rolling mechanism and rolled into a sheet of lead material by the cold rolling mechanism; S2. The sheet lead material is led out from the output end of the cold rolling mechanism and cut into strip lead material by means of a rolling and cutting mechanism; S3. The strip lead material is fed into the input end of the lead pellet forming mechanism in a horizontally lying form, and the groove side of the adjacent rolling groove body (4) is used to shear and break the strip lead material into granular lead material by means of the rotation of the forming roller (1); S4. The feed chain (23) rotates so that the push ball (24) on the feed chain (23) pushes the granular lead material into the rolling trough (4), and the linear speed of the feed chain (23) is less than the linear speed of the forming roller (1); S5. The spherical lead particles (100) that have been rolled in the rolling trough (4) are outputted from the discharge side of the forming support plate (2), and the preparation is completed.

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