Cast well lid paint dipping conveying line

Abstract

The utility model belongs to the technical field of paint dipping equipment, and particularly relates to a cast well lid paint dipping conveying line which comprises a conveyor and a paint groove, well lids are arranged on the conveyor through lifting appliances, and the lifting appliances are arranged on the left side and the right side of the conveyor in the conveying direction of the conveyor respectively. The lifting appliance comprises a fixing rod, a hinge rod and a supporting ring, the fixing rod, the hinge rod and the supporting ring are sequentially arranged from top to bottom, the hinge rod is hinged to the fixing rod, the supporting ring is connected with the hinge rod through a set of pull ropes, the axis of a hinge shaft of the hinge rod is perpendicular to the conveying direction, and the well lid is vertically arranged in the supporting ring and blocked by the pull ropes. The fixing rod is connected with the conveyor, a push table located between the two lifting tools is arranged at the discharging end in the paint groove, the width of the push table is sequentially increased in the conveying direction, the well lid can be fully dipped in paint, the surface of the well lid can be completely covered with a paint film, and the service life of the well lid is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of varnish dipping equipment, and in particular relates to a varnish dipping conveying line for casting manhole covers. Background Art

[0002] Cast manhole covers are usually made of ductile iron. After casting, they need to be dipped in paint to adhere a layer of paint film to the surface of the manhole cover. Due to the presence of depressions in the pattern or small pits such as sand pits produced during the casting process, paint bubbles are easily formed in the small pits on the manhole cover during the dip painting process. When the manhole cover after dip painting is taken out of the paint tank and enters the air, the paint bubbles burst, resulting in no paint film covering the depressions in the pattern or the sand pits, and the paint film on the surface of the manhole cover is uneven. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a casting manhole cover varnish dipping conveyor line, which can make the manhole cover fully dipped in paint, and the surface is completely covered with a paint film, thereby increasing the service life of the manhole cover.

[0004] The specific technical solution adopted by the utility model is:

[0005] A casting manhole cover paint dipping conveyor line includes a conveyor and a paint tank. The manhole cover is set on the conveyor with the help of a hanger. The conveyor is provided with hangers on the left and right sides along its conveying direction. The hanger includes a fixed rod, a hinged rod hinged to the fixed rod, and a supporting ring connected to the hinged rod with a group of pull ropes. The axis of the hinge shaft of the hinged rod is perpendicular to the conveying direction. The manhole cover is vertically set in the supporting ring and blocked by the pull rope. The fixed rod is connected to the conveyor. The discharge end in the paint tank is provided with a push platform located between the two hangers, and the width of the push platform increases sequentially along the conveying direction.

[0006] The support ring is provided with a rubber pad, the end faces of the rubber pads on the two support rings are in contact with each other, and the hinged rods respectively have the freedom to rotate toward the outside of the conveyor.

[0007] An internal threaded sleeve and an external threaded sleeve which are screwed together are arranged between the hinged rod and the supporting ring in sequence. The internal threaded sleeve is fixedly connected to the hinged rod, and the upper end of the pull rope is connected to the hinged rod through the external threaded sleeve and the internal threaded sleeve in sequence.

[0008] The support ring is located below the center of the manhole cover and higher than 1 / 3 of the height of the manhole cover.

[0009] The axis of the manhole cover is arranged perpendicularly to the conveying direction, and the arc surface of the manhole cover in the paint tank contacts the bottom of the paint tank.

[0010] The beneficial effects of the utility model are:

[0011] The utility model adopts a technical solution of respectively arranging hangers on both sides of a conveyor and arranging a push platform at the discharge end of a paint tank, wherein the hanger includes a fixed rod connected to the conveyor and an articulated rod hinged to the fixed rod, so that the manhole cover passes through the push platform during the process of being dipped in paint in the paint tank, and is blocked by the push platform, and the articulated rods on both sides of the conveyor rotate outward respectively, so that the manhole cover forms agitation in the paint tank, which helps to burst paint bubbles, and the paint liquid adheres to the depressions of the pattern or in the sand pit, so that the surface of the manhole cover is completely adhered to by the paint liquid, and after the platform is completely pushed, the manhole cover is lifted out of the paint liquid, and the articulated rod is rotated and reset, so that the manhole cover vibrates, and the excess paint liquid on the manhole cover flows back into the paint tank, so that the adhesion of the paint liquid on the manhole cover is more uniform and the loss of the paint liquid is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Top view of the central push platform;

[0014] Figure 3 for Figure 1 Sectional view along AA direction;

[0015] Figure 4 for Figure 3 Cross-sectional view along the BB direction;

[0016] In the attached drawings, 1, conveyor, 2, paint tank, 3, manhole cover, 4, hanger, 5, fixed rod, 6, hinged rod, 7, pull rope, 8, support ring, 9, push table, 10, rubber pad, 11, internal threaded sleeve, 12, external threaded sleeve, 13, curved surface, and the direction of the straight arrow is the conveying direction of the conveyor. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0018] Specific implementation examples Figure 1-4As shown, a casting manhole cover paint dipping conveyor line includes a conveyor 1 and a paint tank 2. The manhole cover 3 is set on the conveyor 1 by means of a hanger 4. The conveyor 1 is respectively provided with hangers 4 on the left and right sides along its conveying direction. The hanger 4 includes a fixed rod 5 arranged in sequence from top to bottom, a hinged rod 6 hinged to the fixed rod 5 and a supporting ring 8 connected to the hinged rod 6 by means of a group of pull ropes 7. The axis of the hinge shaft of the hinged rod 6 is arranged perpendicular to the conveying direction. The manhole cover 3 is vertically arranged in the supporting ring 8 and blocked by the pull rope 7 to prevent the manhole cover 3 from flipping and falling. The fixed rod 5 is connected to the conveyor 1. The discharge end in the paint tank 2 is provided with a push platform 9 located between the two hangers 4. The width of the push platform 9 increases in sequence along the conveying direction. The end of the push platform 9 is located above the liquid level of the paint liquid in the paint tank 2. The manhole cover 3 passes through the push platform 9 during the process of being dipped in paint in the paint tank 2. The push platform 9 pushes the manhole cover 3 to its two sides, and the hinged rods 6 on both sides of the conveyor 1 rotate outward respectively. The manhole cover 3 forms agitation in the paint tank 2, which helps to burst the paint bubbles. The paint liquid adheres to the depressions of the pattern or in the sand pit, so that the surface of the manhole cover 3 is completely adhered to the paint liquid. After passing through the push platform 9, the manhole cover 3 is lifted out of the paint liquid. Under the action of its own gravity, the hinged rod 6 rotates and resets, causing the manhole cover 3 to vibrate, and the excess paint liquid on the manhole cover 3 flows back into the paint tank 2. The adhesion of the paint liquid on the manhole cover 3 is more uniform and the loss of the paint liquid is reduced. When the conveyor 1 conveys the manhole cover 3 to the top of the paint tank 2, the conveying height begins to decrease, and the descending height of the fixed rod 5 on the conveyor 1 is greater than the maximum descending height of the manhole cover 3 and less than the maximum descending height of the supporting ring 8, so that after the manhole cover 3 contacts the bottom of the paint tank 2, the supporting ring 8 still descends a distance, so that the manhole cover 3 is not in contact with the supporting ring 8, but is still in the supporting ring 8. The whole body of the manhole cover 3 can be covered with paint liquid, and with the conveyor 1, the supporting ring 8 contacts the manhole cover 3 again to push the manhole cover 3 to move in the conveying direction. When the conveying height increases, the supporting ring 8 lifts the manhole cover 3.

[0019] The conveyor 1 in this embodiment is a hanging conveyor.

[0020] Furthermore, a rubber pad 10 is provided on the support ring 8, and the end faces of the rubber pads 10 on the two support rings 8 fit together. The hinged rods 6 have the freedom to rotate toward the outside of the conveyor 1. After the manhole cover 3 is lifted out of the paint tank 2, the hinged rod 6 rotates and returns to its original position, and the rubber pads 10 on the support rings 8 collide and fit together to absorb vibration and reduce noise, thereby preventing hard collision at the hinged rod and causing the manhole cover 3 to vibrate slightly.

[0021] Furthermore, an internal threaded sleeve 11 and an external threaded sleeve 12 that are screwed together are sequentially arranged between the hinged rod 6 and the supporting ring 8. The internal threaded sleeve 11 is fixedly connected to the hinged rod 6, and the upper end of the pull rope 7 is connected to the hinged rod 6 through the external threaded sleeve 12 and the internal threaded sleeve 11 in sequence. By controlling the length of the screwing of the external threaded sleeve 12 and the internal threaded sleeve 11, the tightness of the constraint of the pull rope 7 on the manhole cover 3 can be controlled. The external threaded sleeve 12 moves upward relative to the internal threaded sleeve 11, and the length of the pull rope 7 exposed by the external threaded sleeve 12 increases. By changing the properties and position of the pull rope 7, it is convenient to put the manhole cover 3 into the supporting ring 8 or take it out from the supporting ring 8; the external threaded sleeve 12 moves downward relative to the internal threaded sleeve 11, and the length of the pull rope 7 exposed by the external threaded sleeve 12 is reduced, thereby blocking the manhole cover 3 and preventing the manhole cover 3 from falling off from the supporting ring 8.

[0022] Furthermore, the support ring 8 is located below the center of the manhole cover 3 and higher than 1 / 3 of the height of the manhole cover 3. The support ring 8 can both support the manhole cover 3 and facilitate separation from the manhole cover 3 in the paint tank 2.

[0023] Furthermore, the axis of the manhole cover 3 is arranged perpendicular to the conveying direction, and the arc surface 13 of the manhole cover 3 in the paint trough 2 contacts the bottom of the paint trough 2. When the manhole cover 3 passes over the paint trough 2, as the conveying height of the conveyor 1 changes, the manhole cover 3 descends into the paint trough 2, and the arc surface 13 of the manhole cover 3 contacts the bottom of the paint trough 2. The support ring 8 continues to descend, so that the manhole cover 3 and the support ring 8 are separated. As the conveyor 1 continues to convey, the support ring 8 pushes the manhole cover 3 along the conveying direction, and the manhole cover 3 can roll in the support ring 8. During the rolling process, the paint liquid is evenly adhered to the surface, and the paint bubbles formed on the manhole cover 3 also burst as the manhole cover 3 rolls, further reducing the occurrence of partial exposure of the surface of the manhole cover 3 caused by paint bubbles.

Claims

1. A casting manhole cover varnishing conveying line, comprising a conveyor (1) and a paint tank (2), wherein the manhole cover (3) is arranged on the conveyor (1) by means of a hanger (4), and characterized in that: The conveyor (1) is provided with hangers (4) on the left and right sides along its conveying direction, respectively. The hangers (4) include a fixed rod (5) arranged in sequence from top to bottom, a hinged rod (6) hinged to the fixed rod (5), and a support ring (8) connected to the hinged rod (6) by means of a group of pull ropes (7). The axis of the hinge shaft of the hinged rod (6) is arranged perpendicular to the conveying direction. The manhole cover (3) is vertically arranged in the support ring (8) and blocked by the pull rope (7). The fixed rod (5) is connected to the conveyor (1). The discharge end in the paint tank (2) is provided with a push platform (9) located between the two hangers (4), and the width of the push platform (9) increases in sequence along the conveying direction.

2. A casting manhole cover varnishing conveying line according to claim 1, characterized in that: The support ring (8) is provided with a rubber pad (10), the end surfaces of the rubber pads (10) on the two support rings (8) are in contact with each other, and the hinged rods (6) each have the freedom to rotate toward the outside of the conveyor (1).

3. A casting manhole cover varnishing conveying line according to claim 1, characterized in that: An internal threaded sleeve (11) and an external threaded sleeve (12) which are screwed together are arranged in sequence between the articulated rod (6) and the supporting ring (8); the internal threaded sleeve (11) is fixedly connected to the articulated rod (6); and the upper end of the pull rope (7) is connected to the articulated rod (6) through the external threaded sleeve (12) and the internal threaded sleeve (11) in sequence.

4. A casting manhole cover dipping paint conveyor line according to claim 1, characterized in that: The support ring (8) is located below the center of the manhole cover (3) and higher than 1 / 3 of the height of the manhole cover (3).

5. The casting manhole cover varnishing conveying line according to claim 1 is characterized by: The axis of the manhole cover (3) is arranged perpendicular to the conveying direction, and the arc surface (13) of the manhole cover (3) in the paint tank (2) contacts the bottom of the paint tank (2).

Images