Printing ink three-roller grinding equipment

Abstract

The invention discloses printing ink three-roller grinding equipment, and belongs to the technical field of printing ink grinding. A slow roller, a middle roller and a fast roller are arranged on the machine body, the middle roller is in a spindle shape, the surfaces of the slow roller and the fast roller are concave in an arc shape, arc-shaped grinding gaps allowing ink to pass through are formed between the slow roller and the middle roller and between the fast roller and the middle roller, and in the autorotation process of the slow roller and the fast roller, the slow roller and the fast roller swing around the middle roller in a reciprocating mode. In the process that the slow roller and the fast roller swing around the middle roller in a reciprocating mode, the contact positions and angles between the slow roller and the fast roller and printing ink can be continuously changed, the dynamic contact is beneficial to more evenly distributing grinding force, and the grinding efficiency is improved; and when the slow roller and the fast roller swing around the middle roller in a reciprocating mode, the static state of the ink in the grinding gap can be broken, flowing and mixing of the ink in the grinding gap are promoted, and the ink is fully ground.

Description

Technical Field

[0001] The invention relates to ink three-roller grinding equipment, belonging to the technical field of ink grinding. Background Art

[0002] In the field of ink manufacturing and processing, uniform grinding of ink is crucial to improving printing quality. Traditional ink grinding equipment usually adopts fixed rollers or simple rotating grinding methods. These methods often face the problems of uneven grinding and low efficiency when dealing with high-viscosity, high-solid content or easily agglomerated inks. During the grinding process, the ink is prone to form a static layer or local accumulation between the rollers, resulting in uneven distribution of grinding force, and some ink particles cannot be fully refined, thus affecting the final performance of the ink. Summary of the invention

[0003] The object of the present invention is to provide an ink three-roll grinding device to solve the problems raised in the above background technology.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme: an ink three-roll grinding device, comprising: Body; A slow roller, a middle roller and a fast roller, wherein the slow roller, the middle roller and the fast roller are rotatably connected to the machine body, the slow roller, the middle roller and the fast roller are arranged in a horizontal direction, and the middle roller is located between the slow roller and the fast roller; Among them, the middle roller is spindle-shaped, the surfaces of the slow roller and the fast roller are arc-shaped and concave, and there is an arc-shaped grinding gap between the slow roller and the middle roller, and between the fast roller and the middle roller for ink to pass through. During the rotation of the slow roller and the fast roller, the slow roller and the fast roller swing back and forth around the middle roller.

[0005] Preferably, the grinding gap between the slow roller and the middle roller is larger than the grinding gap between the fast roller and the middle roller. When the slow roller and the fast roller reciprocate around the middle roller, the grinding gap between the slow roller and the middle roller and the grinding gap between the fast roller and the middle roller remain unchanged.

[0006] Preferably, a driving assembly is disposed inside the body, and the driving assembly comprises: Two driving rods, the two driving rods are symmetrically distributed inside the body; Sliding seats, both ends of the slow roller and the fast roller are sleeved with a sliding seat, and each sliding seat is slidably connected to the inside of a sliding groove opened on the machine body; A connecting rod, the lower end of which is fixed to one end of the driving rod, and the upper end of which is fixed to the sliding seat, so as to make the sliding seat move synchronously with the driving rod; The motor is fixedly mounted on the machine body, and the output shaft of the motor is transmission-connected with the two driving rods through a gear set. When the output shaft of the motor rotates, the gear set drives the two driving rods to rotate synchronously in opposite directions.

[0007] Preferably, an ink three-roller grinding device further includes a shielding component including: A baffle, the baffle being arranged above the grinding gap between the slow roller and the middle roller, one side of the lower end of the baffle being in contact with the surface of the slow roller, the other side of the lower end of the baffle being in contact with the surface of the middle roller, and the middle part of the baffle being bendable and deformable; A fixed support rod, one end of which is fixed to the side wall of the baffle plate close to the middle roller, and the other end of which is fixed to the side wall of the machine body; A movable support rod, one end of which is fixed on the side wall of the baffle plate close to the slow roller, and the other end of which is fixedly connected to the side wall of the sliding seat connected to the slow roller.

[0008] Preferably, the baffle is made of rubber material, and inner support plates are embedded on both sides of the interior of the baffle.

[0009] Preferably, a scraping assembly is provided on one side of the machine body close to the fast roller, and the scraping assembly comprises: A scraper, one end of which is in contact with the surface of the fast roller, and the other end of which is inclined downward; A support rod, one end of which is fixed on the side wall of the scraper, and the other end of which is fixed on the side wall of the sliding seat connected to the fast roller.

[0010] Preferably, one end of the slow roller, the middle roller and the fast roller is fixed with a connecting gear for transmission connection with an external power source.

[0011] Preferably, the middle roller is rotatably connected to the machine body via a bearing, and bearings are also provided between the slow roller and the sliding seat, and between the fast roller and the sliding seat.

[0012] Compared with existing technologies: In the present invention, when the slow roller, the middle roller and the fast roller rotate, the friction and extrusion at different speeds between the rollers are helpful to break the agglomerated state of the ink and further refine the ink particle size; and because the middle roller is spindle-shaped and the surfaces of the slow roller and the fast roller are arc-shaped and concave, the speed difference between the two rollers is more obvious at each position of the grinding gap. When the ink passes through the grinding gap, due to the different speeds of adjacent rollers, the ink will be subjected to a strong shearing effect, thereby enhancing the grinding effect; The slow roller and the fast roller of the present invention can continuously change the contact position and angle with the ink during the process of reciprocating swing around the middle roller. This dynamic contact helps to distribute the grinding force more evenly and improve the grinding efficiency. In addition, the slow roller and the fast roller help to break the static state of the ink in the grinding gap when they reciprocate around the middle roller, promote the flow and mixing of the ink in the grinding gap, and make the ink more fully subjected to the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is an overall front view of the present invention.

[0015] Figure 3 For the present invention Figure 2 Cross-sectional view at AA.

[0016] Figure 4 It is a top view of the slow roller, middle roller and fast roller of the present invention.

[0017] Figure 5 It is a schematic diagram of the state when the slow roller and the fast roller swing around the middle roller of the present invention.

[0018] Figure 6 It is a structural schematic diagram of the driving rod, sliding seat, connecting rod and motor of the present invention.

[0019] Figure 7 It is a bottom view of the driving rod, the sliding seat and the motor of the present invention.

[0020] Figure 8 It is a cross-sectional exploded view of the machine body, slow roller, middle roller, fast roller and sliding seat of the present invention.

[0021] Fig. 9 It is a cross-sectional view of the baffle, fixed support rod and movable support rod of the present invention.

[0022] Fig.10 For the present invention Fig. 9 Enlarged view of point B.

[0023] In the figure: 1. Machine body, 2. Slow roller, 3. Middle roller, 4. Fast roller; 5. driving assembly, 501. driving rod, 502. sliding seat, 503. connecting rod, 504. motor, 505. slide slot; 6. shielding assembly, 601. baffle, 602. fixed support rod, 603. movable support rod; 7. Inner support plate; 8. scraping assembly, 801. scraper, 802. support rod; 9. Connect the gears. DETAILED DESCRIPTION

[0024] The present invention is described below with specific embodiments, but they are not intended to be limiting of the invention.

[0025] Embodiment 1 like Figure 1-Figure 10As shown, in this embodiment, an ink three-roll grinding device is provided, including a body 1; a slow roller 2, a middle roller 3 and a fast roller 4 are rotatably connected to the body 1, the slow roller 2, the middle roller 3 and the fast roller 4 are arranged in a horizontal direction, and the middle roller 3 is located between the slow roller 2 and the fast roller 4, and the middle roller 3 is rotatably connected to the body 1 through a bearing, as shown in FIG. Figure 3 As shown, the slow roller 2 and the fast roller 4 rotate in the same direction, and the middle roller 3 rotates in the opposite direction to the slow roller 2 and the fast roller 4. One end of the slow roller 2, the middle roller 3 and the fast roller 4 is fixed with a connecting gear 9 for transmission connection with an external power source. The external power source drives the slow roller 2, the middle roller 3 and the fast roller 4 to rotate through the connecting gear 9. The external power source can be installed on the machine body 1, and the external power source can be a motor; wherein the middle roller 3 is spindle-shaped (or jujube-shaped, i.e., the middle diameter is large and the two ends are small), the surfaces of the slow roller 2 and the fast roller 4 are arc-shaped and concave (i.e., the middle diameter is small and the two ends are large), and there is a gap between the slow roller 2 and the middle roller 3, and between the fast roller 4 and the middle roller 3. There is an arc-shaped grinding gap between the rollers 3 for the ink to pass through; when the slow roller 2, the middle roller 3 and the fast roller 4 rotate, the friction and extrusion at different speeds between the rollers help to break the agglomeration of the ink and further refine the ink particle size; and because the middle roller 3 is spindle-shaped and the surfaces of the slow roller 2 and the fast roller 4 are arc-shaped and concave, the speed difference between the two rollers is more obvious at each position of the grinding gap. When the ink passes through the grinding gap, due to the different speeds of adjacent rollers, the ink will be subjected to strong shearing action, thereby enhancing the grinding effect; during the rotation of the slow roller 2 and the fast roller 4, the slow roller 2 and the fast roller 4 swing back and forth around the middle roller 3.

[0026] like Figure 4 As shown, the centers of the circles where the arcuate edges on both sides of the middle roller 3 (i.e., the arcuate edges of the slow roller 2 and the fast roller 4 close to the middle roller 3) are located are located at points a and b, respectively. At this time, the slow roller 2 swings around point a, and the fast roller 4 swings around point b. In the process of the slow roller 2 and the fast roller 4 swinging back and forth around the middle roller 3, the ink is not only subjected to the grinding force in the direction of roller rotation, but also subjected to the extrusion grinding force along the arc swing direction of the grinding gap, which can continuously change the contact position and angle with the ink. This dynamic contact helps to distribute the grinding force more evenly and improve the grinding efficiency. In addition, when the slow roller 2 and the fast roller 4 swing back and forth around the middle roller 3, it helps to break the static state of the ink in the grinding gap, promote the flow and mixing of the ink in the grinding gap, and make the ink more fully subjected to the grinding effect.

[0027] The grinding gap between the slow roller 2 and the middle roller 3 is larger than the grinding gap between the fast roller 4 and the middle roller 3. Figure 3As shown, the grinding gap between the slow roller 2 and the middle roller 3 is c1, the grinding gap between the fast roller 4 and the middle roller 3 is c2, the grinding gap c1 is larger than the grinding gap c2, the ink is ground once at the grinding gap c1, and the ink is ground twice at the grinding gap c2, when the slow roller 2 and the fast roller 4 swing back and forth around the middle roller 3, the grinding gap between the slow roller 2 and the middle roller 3, and the grinding gap between the fast roller 4 and the middle roller 3 remain unchanged.

[0028] A scraping assembly 8 is provided on one side of the machine body 1 close to the fast roller 4. The scraping assembly 8 includes: A scraper 801, one end of the scraper 801 is in contact with the surface of the fast roller 4, and the other end of the scraper 801 is tilted downward; A support rod 802 , one end of which is fixed on the side wall of the scraper 801 , and the other end of which is fixed on the side wall of the sliding seat 502 connected to the fast roller 4 .

[0029] The support rod 802 connects the scraper 801 with the sliding seat 502 (connected to the fast roller 4). When the fast roller 4 moves on the machine body 1, the fast roller 4 moves synchronously with the sliding seat 502, the support rod 802 and the scraper 801, so that one end of the scraper 801 is always in contact with the side wall of the fast roller 4.

[0030] When grinding the ink, the slow roller 2, the middle roller 3 and the fast roller 4 are as follows: Figure 3 The roller 2 rotates in the direction of the arrow shown, and the ink to be ground is poured between the slow roller 2 and the middle roller 3. The ink accumulates above the grinding gap c1 between the slow roller 2 and the middle roller 3. As the slow roller 2 and the middle roller 3 rotate, the slow roller 2 and the middle roller 3 squeeze the ink toward the grinding gap c1 little by little, and grind once. The ink passing through the grinding gap c1 adheres to the slow roller 2 and the middle roller 3, and the ink adhered to the slow roller 2 returns to the top of the grinding gap c1 as the slow roller 2 rotates. The ink adhered to the middle roller 3 is brought to the bottom of the grinding gap c2 by the middle roller 3. The middle roller 3 and the fast roller 4 squeeze the ink in the grinding gap c2 for secondary grinding. The ink passing through the grinding gap c2 adheres to the middle roller 3 and the fast roller 4, and the ink adhered to the middle roller 3 returns to the top of the grinding gap c1 as the middle roller 3 rotates. The ink adhered to the fast roller 4 is scraped off by the scraper 801 and collected.

[0031] Embodiment 2 like Figure 3-Figure 8As shown, on the basis of the first embodiment, in order to drive the slow roller 2 and the fast roller 4 to swing back and forth around the middle roller 3, a driving assembly 5 is arranged inside the machine body 1 in this embodiment, and the driving assembly 5 includes a driving rod 501, a sliding seat 502 and a connecting rod 503. Two driving rods 501 are arranged, and the two driving rods 501 are symmetrically distributed inside the machine body 1; a sliding seat 502 is sleeved at both ends of the slow roller 2 and both ends of the fast roller 4, and the slow roller 2 and the sliding seat 502, and the fast roller 4 and the sliding seat 502 are rotatably connected through bearings, and each sliding seat 502 is slidably connected to the inside of a slide groove 505 provided on the machine body 1; the lower end of the connecting rod 503 is fixed to one end of the driving rod 501, and the upper end of the connecting rod 503 is fixed to the sliding seat 502, so as to make the sliding seat 502 move synchronously with the driving rod 501, and the two sliding seats 502 connected to the same driving rod 501 through the connecting rod 503 are connected to both ends of the slow roller 2 (or both ends of the fast roller 4); like Figure 8 As shown, the body 1 is provided with a slide groove 505 for the sliding seat 502 to slide, and the slide groove 505 has a certain curvature, and the center of the circle where the arc-shaped slide groove 505 is located is Figure 4 The arc-shaped slide groove 505 has a guiding effect on the sliding seat 502, the driving rod 501 and the connecting rod 503, so that the slow roller 2 can swing around point a and the fast roller 4 can swing around point b.

[0032] A motor 504 is fixedly mounted on the machine body 1 , and the output shaft of the motor 504 is transmission-connected to the two driving rods 501 through a gear set. When the output shaft of the motor 504 rotates, the gear set drives the two driving rods 501 to rotate synchronously in opposite directions.

[0033] The gear set includes a driving gear and two driven gears. The driving gear is fixed on the output shaft of the motor 504. The two driven gears are rotatably connected to the body 1 and are respectively meshed with the two sides of the driving gear. The two driven gears are respectively meshed with the side walls of the driving rod 501 on the same side. When the motor 504 drives the driving gear to rotate, the two driven gears rotate in opposite directions, thereby realizing the synchronous opposite rotation of the two driving rods 501.

[0034] Embodiment 3 like Figure 1 , Fig. 9As shown, on the basis of the first embodiment, in order to block the two ends of the grinding gap between the slow roller 2 and the middle roller 3 to prevent ink from overflowing from both sides of the grinding gap, the ink three-roller grinding device also includes a shielding component 6, and two shielding components 6 are provided. The two shielding components 6 are respectively arranged at the two ends of the grinding gap between the slow roller 2 and the middle roller 3, and each shielding component 6 includes a baffle 601, a fixed support rod 602 and a movable support rod 603. The baffle 601 is arranged above the grinding gap between the slow roller 2 and the middle roller 3, and the baffle 601 is arranged above the grinding gap between the slow roller 2 and the middle roller 3. One side of the lower end of the plate 601 is in contact with the surface of the slow roller 2, and the other side of the lower end of the baffle 601 is in contact with the surface of the middle roller 3, and the middle part of the baffle 601 can be bent and deformed; one end of the fixed support rod 602 is fixed to the side wall of the baffle 601 close to the middle roller 3, and the other end of the fixed support rod 602 is fixed to the side wall of the machine body 1; one end of the movable support rod 603 is fixed to the side wall of the baffle 601 close to the slow roller 2, and the other end of the movable support rod 603 is fixedly connected to the side wall of the sliding seat 502 connected to the slow roller 2.

[0035] During the ink grinding process, the side of the baffle 601 located above the middle roller 3 is supported by the fixed support rod 602, so that the part of the baffle 601 located above the middle roller 3 is fixed relative to the middle roller 3, so that the bottom of the baffle 601 of this part is always in contact with the surface of the middle roller 3, and the side of the baffle 601 located above the slow roller 2 is supported by the movable support rod 603, and the movable support rod 603 is fixed on the sliding seat 502, so that the movable support rod 603 moves synchronously with the sliding seat 502 and the slow roller 2. Then, the movable support rod 603 makes the part of the baffle 601 located above the slow roller 2 move synchronously with the slow roller 2, so that the bottom of the baffle 601 of this part is always in contact with the surface of the slow roller 2, and the middle part of the baffle 601 can be bent and deformed, so that when the slow roller 2 moves relative to the middle roller 3, the lower end of the baffle 601 can always be in contact with the surface of the middle roller 3 and the surface of the slow roller 2 at the same time, effectively preventing ink from overflowing from both sides of the grinding gap.

[0036] The baffle 601 is made of rubber material, and inner support plates 7 are embedded on both sides of the baffle 601. The baffle 601 made of rubber material can be bent and deformed, and two inner support plates 7 are provided, and the two inner support plates 7 are not connected in the middle of the baffle 601 (such as Fig.10 As shown), it is beneficial for the baffle 601 to bend and deform at this position.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An ink three-roll grinding device, characterized in that: include: Body (1); A slow roller (2), a middle roller (3) and a fast roller (4), wherein the slow roller (2), the middle roller (3) and the fast roller (4) are rotatably connected to the machine body (1), and the middle roller (3) is located between the slow roller (2) and the fast roller (4); The middle roller (3) is spindle-shaped, the surfaces of the slow roller (2) and the fast roller (4) are arranged in an arc-shaped concave shape, and there is an arc-shaped grinding gap between the slow roller (2) and the middle roller (3) and between the fast roller (4) and the middle roller (3) for ink to pass through. During the self-rotation of the slow roller (2) and the fast roller (4), the slow roller (2) and the fast roller (4) can swing back and forth around the middle roller (3).

2. The ink three-roll grinding equipment according to claim 1, characterized in that: The grinding gap between the slow roller (2) and the middle roller (3) is larger than the grinding gap between the fast roller (4) and the middle roller (3); when the slow roller (2) and the fast roller (4) swing back and forth around the middle roller (3), the grinding gap between the slow roller (2) and the middle roller (3) and the grinding gap between the fast roller (4) and the middle roller (3) remain unchanged.

3. The ink three-roll grinding equipment according to claim 1, characterized in that: A driving assembly (5) is arranged inside the machine body (1), and the driving assembly (5) comprises: Two driving rods (501), the two driving rods (501) are symmetrically distributed inside the body (1); Sliding seats (502), both ends of the slow roller (2) and both ends of the fast roller (4) are sleeved with a sliding seat (502), and each sliding seat (502) is slidably connected to the inside of a sliding groove (505) provided on the machine body (1); A connecting rod (503), the upper and lower ends of which are respectively fixedly connected to the sliding seat (502) and the driving rod (501), and are used to make the sliding seat (502) and the driving rod (501) move synchronously; A motor (504) is fixedly mounted on the machine body (1); an output shaft of the motor (504) is transmission-connected to two drive rods (501) via a gear set; when the output shaft of the motor (504) rotates, the gear set drives the two drive rods (501) to rotate synchronously in opposite directions.

4. The ink three-roll grinding equipment according to claim 1, characterized in that: The shielding component (6) also includes: a baffle (601), the baffle (601) being arranged above the grinding gap between the slow roller (2) and the middle roller (3), one side of the lower end of the baffle (601) being in contact with the surface of the slow roller (2), the other side of the lower end of the baffle (601) being in contact with the surface of the middle roller (3), and the middle portion of the baffle (601) being bendable and deformable; A fixed support rod (602), one end of the fixed support rod (602) being fixed to a side wall of the baffle (601) close to the middle roller (3), and the other end of the fixed support rod (602) being fixed to a side wall of the machine body (1); A movable support rod (603), one end of the movable support rod (603) is fixed to a side wall of the baffle (601) close to the slow roller (2), and the other end of the movable support rod (603) is fixedly connected to a side wall of a sliding seat (502) connected to the slow roller (2).

5. The ink three-roll grinding equipment according to claim 4, characterized in that: The baffle plate (601) is made of rubber material, and inner support plates (7) are embedded on both sides of the interior of the baffle plate (601).

6. The ink three-roll grinding equipment according to claim 1, characterized in that: A scraping assembly (8) is provided on one side of the machine body (1) close to the fast roller (4), and the scraping assembly (8) comprises: A scraper (801), one end of the scraper (801) being in contact with the surface of the fast roller (4), and the other end of the scraper (801) being inclined downward; A support rod (802), one end of the support rod (802) is fixed on the side wall of the scraper (801), and the other end of the support rod (802) is fixed on the side wall of a sliding seat (502) connected to the fast roller (4).

7. The ink three-roll grinding equipment according to claim 1, characterized in that: A connecting gear (9) for transmission connection with an external power source is fixed to one end of the slow roller (2), the middle roller (3) and the fast roller (4).

8. The ink three-roll grinding equipment according to claim 1, characterized in that: The middle roller (3) is rotatably connected to the machine body (1) via a bearing.

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