Adsorption conveying device of corrugated paper printing machine

Abstract

The utility model relates to a corrugated paper printing machine adsorption conveying device which comprises an inner roller, the inner roller is a cylindrical shell with the axis horizontally arranged left and right, an air inlet pipe and an exhaust pipe are fixed to the left end face and the right end face of the inner roller respectively, a through groove is formed in the upper side of the outer edge face of the inner roller in the axis direction, and an outer roller is coaxially connected to the outer side of the inner roller in a rotating mode. A plurality of suction holes are evenly formed in the outer edge face of the outer roller, and a blocking block is arranged in the air inlet pipe and moves towards the inner side of the inner roller to increase the air inlet amount of the air inlet pipe. Negative pressure of the inner roller cavity is always achieved through the vacuum pump, negative pressure suction of paperboards is achieved, and meanwhile negative pressure loss caused by non-upper-side suction moving holes is greatly reduced. The blocking block overcomes the elastic force of the compression spring to move rightwards, so that the inner roller cavity is communicated with the outside through the air inlet hole, the air inflow of the shielded suction hole is compensated, the inner roller can adapt to paperboards of different sizes and specifications, the negative pressure of the inner roller cavity is always stabilized at a fixed numerical value, and the paperboards are protected from being damaged by suction force while the suction stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of corrugated cardboard production, in particular to an adsorption and transmission device for a corrugated paper printing machine. Background Art

[0002] In order to prevent the cardboard from skewing and running out of position during the transmission process, the existing water-based ink printing machine for corrugated cardboard usually sets a vacuum suction and transfer mechanism at the feeding port. For example, a water-based ink printing machine vacuum suction and transfer device disclosed in the patent with the publication number CN203004509U can achieve remarkable effects. However, the following problems still exist in the actual use of this solution: 1. The suction holes are always externally connected, but only the suction holes at the end in contact with the cardboard generate suction work, resulting in waste of suction force. 2. The specifications of the suction rollers are fixed. For cardboard with different specifications, the number of suction holes covered is different, and the suction force during adsorption is different, which may cause unstable adsorption or damage to the surface of the cardboard, affecting the product qualification rate. Content of the Utility Model

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model adopts an adsorption and transmission device for a corrugated paper printing machine, which solves the problems of waste of suction force and unstable adsorption for cardboard with different specifications in the prior art.

[0004] The technical solution it adopts is that an adsorption and transmission device for a corrugated paper printing machine includes an inner roller. The inner roller is a cylindrical shell with a horizontal axis placed left and right. An air inlet pipe and an air extraction pipe are respectively fixed to the left and right end faces of the inner roller. A through groove is opened along the axial direction on the upper side of the outer edge surface of the inner roller. An outer roller is coaxially and rotatably connected to the outside of the inner roller. A plurality of suction and transfer holes are evenly opened on the outer edge surface of the outer roller. A blocking block is arranged in the air inlet pipe. When the blocking block moves inward to the inner side of the inner roller, the air intake volume of the air inlet pipe can be increased.

[0005] The air inlet pipe penetrates to the inner side of the inner roller, and a plurality of air inlet holes evenly distributed along the circumference are opened on the part of the outer edge surface of the air inlet pipe located inside the inner roller. The left and right width of the blocking block is greater than the left and right width of the air inlet holes. And when the blocking block is not under external force, the left end face is always located on the left side of the air inlet holes, and can block the air inlet pipe.

[0006] A retaining ring is fixed to the inner side end of the air inlet pipe. A compression spring is arranged between the retaining ring and the blocking block, and the compression spring makes the left end face of the blocking block always located on the left side of the air inlet holes.

[0007] The inner roller and the outer roller are in clearance fit. A plurality of rollers are evenly distributed along the circumference at the left and right ends of the outer end face of the inner roller. The outer ends of the rollers are in contact with the inner edge surface of the outer roller, which reduces the rotational resistance while playing a supporting role.

[0008] A gear is coaxially fixed to the right end face of the outer roller.

[0009] The utility model has the following advantages compared with the prior art:

[0010] 1. By always maintaining a negative pressure in the inner roller cavity with a vacuum pump, while achieving negative pressure suction on the cardboard, the negative pressure loss caused by the non-upper suction holes is greatly reduced.

[0011] 2. The motor is engaged with the gear through a gear set and drives the outer roller to rotate, realizing the transmission of the cardboard by the outer roller.

[0012] 3. By setting the power of the negative pressure pump, the negative pressure in the inner roller cavity can be stabilized at a fixed value. When the cardboard is adsorbed on the upper side of the outer roller, some of the suction holes are blocked, and the negative pressure in the inner roller cavity increases. The plug can overcome the elastic force of the compression spring and move to the right, enabling the inner roller cavity to communicate with the outside through the air inlet hole, compensating for the air intake of the blocked suction holes, and being able to adapt to cardboard of different sizes and specifications. The negative pressure in the inner roller cavity is always stabilized at a fixed value, ensuring the adsorption stability while protecting the cardboard from being damaged by the suction force.

[0013] 4. When the adsorption point of the cardboard moves with the outer roller to the area outside the through groove, the negative pressure can be quickly reduced, and the adsorption point of the cardboard is quickly released without affecting the transmission of the cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the present utility model.

[0015] Figure 2 This is the front sectional view of the present utility model.

[0016] Figure 3 This is the left sectional view of the present utility model.

[0017] Figure 4 This is the front view of the air inlet pipe of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further elaborates on the specific embodiments of the present utility model in conjunction with the accompanying drawings

[0019] As shown by Figures 1 to 4 , the present utility model includes an inner roller 1, which is a cylindrical shell horizontally placed with its axis left and right. The left and right end faces of the inner roller 1 are respectively fixed with an air inlet pipe 2 and an air extraction pipe 3. A through groove 4 is axially opened on the upper side of the outer edge surface of the inner roller 1. An outer roller 5 is coaxially rotatably connected to the outside of the inner roller 1. A plurality of suction holes 6 are evenly opened on the outer edge surface of the outer roller 5. A plug 7 is arranged in the air inlet pipe 2, and when the plug 7 moves inward to the inner side of the inner roller 1, the air intake of the air inlet pipe 2 can be increased.

[0020] The air inlet pipe 2 penetrates to the inner side of the inner roller 1, and a plurality of air inlet holes 8 evenly distributed along the circumference are opened on the part of the outer edge surface of the air inlet pipe 2 located inside the inner roller 1. The left and right width of the plug 7 is greater than the left and right width of the air inlet holes 8, and when the plug 7 is not affected by external force, the left end face is always located on the left side of the air inlet holes 8, and can block the air inlet pipe 2.

[0021] A retaining ring 9 is fixed to the inner end of the intake pipe 2. A compression spring is arranged between the retaining ring 9 and the plug 7, and the compression spring keeps the left end face of the plug 7 always on the left side of the intake hole 8.

[0022] The inner roller 1 and the outer roller 5 are in clearance fit. A plurality of rollers 10 are evenly distributed along the circumference at the left and right ends of the outer end face of the inner roller 1. The outer ends of the rollers 10 are in contact with the inner edge surface of the outer roller 5, which reduces the rotational resistance while playing a supporting role.

[0023] A gear 11 is coaxially fixed to the right end face of the outer roller 5 as described above.

[0024] When the utility model is in use, the intake pipe 2 and the extraction pipe 3 are fixed to the printing machine, and at the same time, the extraction pipe 3 is communicated with a vacuum pump. The vacuum pump always keeps the cavity of the inner roller 1 in negative pressure. Airflow can enter the cavity of the inner roller 1 through the upper suction holes 6 and the through grooves 4, realizing the negative pressure suction of the cardboard while greatly reducing the negative pressure loss caused by the non-upper suction holes 6. The motor is meshed with the gear 11 through a gear set and drives the outer roller 5 to rotate, realizing the transmission of the cardboard by the outer roller 5. When there is no cardboard on the outer roller 5, all the suction holes 6 corresponding to the through grooves 4 can intake air normally. By setting the power of the negative pressure pump, the negative pressure in the cavity of the inner roller 1 can be stabilized at a fixed value. When the cardboard is adsorbed on the upper side of the outer roller 5, some of the suction holes 6 are blocked, and the number of suction holes 6 for intake air decreases, and the negative pressure in the cavity of the inner roller 1 increases. At this time, the plug 7 can move to the right against the elastic force of the compression spring, so that the cavity of the inner roller 1 is communicated with the outside through the intake hole 8. As the distance that the plug 7 moves to the right increases, the opening size of the intake hole 8 gradually increases, compensating for the intake air volume of the blocked suction holes 6 and being able to adapt to cardboard of different sizes and specifications. The negative pressure in the cavity of the inner roller 1 is always stabilized at a fixed value, ensuring the adsorption stability while protecting the cardboard from being damaged by the suction force. When the adsorption point of the cardboard moves with the outer roller 5 to the area where it breaks away from the through groove 4, the negative pressure can be quickly reduced, and the adsorption point of the cardboard is quickly released, without affecting the transmission of the cardboard.

Claims

1. A corrugated paper printing machine adsorption and transmission device, characterized in that: It includes an inner roller (1), the inner roller (1) is a cylindrical shell with a horizontal axis placed left and right, air inlet pipes (2) and air extraction pipes (3) are respectively fixed on the left and right end faces of the inner roller (1), a through groove (4) is opened along the axis direction on the upper side of the outer edge surface of the inner roller (1), an outer roller (5) is coaxially rotatably connected outside the inner roller (1), a plurality of suction holes (6) are evenly opened on the outer edge surface of the outer roller (5), a blocking block (7) is arranged in the air inlet pipe (2), and the inward movement of the blocking block (7) towards the inner side of the inner roller (1) can increase the air intake volume of the air inlet pipe (2).

2. The adsorption and conveying device of a corrugated paper printing press according to claim 1, characterized in that, The air inlet pipe (2) penetrates to the inner side of the inner roller (1), and a plurality of air inlet holes (8) evenly distributed along the circumference are opened on the part of the outer edge surface of the air inlet pipe (2) located inside the inner roller (1). The left and right width of the blocking block (7) is greater than the left and right width of the air inlet holes (8), and when the blocking block (7) is not subject to external force, the left end face is always located on the left side of the air inlet holes (8), and can block the air inlet pipe (2).

3. The adsorption and transmission device of a corrugated paper printing press according to claim 2, characterized in that, A retaining ring (9) is fixed at the inner end of the air inlet pipe (2), and a compression spring is arranged between the retaining ring (9) and the blocking block (7), and the compression spring makes the left end face of the blocking block (7) always located on the left side of the air inlet holes (8).

4. The adsorption and transmission device of a corrugated paper printing machine according to claim 1, wherein, The inner roller (1) and the outer roller (5) are in clearance fit. A plurality of rollers (10) are evenly distributed along the circumference at the left and right ends of the outer end face of the inner roller (1). The outer ends of the rollers (10) are in contact with the inner edge surface of the outer roller (5), which reduces the rotational resistance while playing a supporting role.

5. The adsorption and transmission device of a corrugated paper printing press according to claim 1, characterized in that, A gear (11) is coaxially fixed on the right end face of the outer roller (5).

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