A high-precision temperature balance structure for reducing thermal expansion and contraction deformation

Abstract

A high-precision temperature balance structure for reducing thermal expansion and contraction deformation includes two mounting wall panels and two optical drums, wherein the two optical drums are respectively mounted between the two mounting wall panels, and a temperature regulating component is provided on the mounting wall panels, and the temperature regulating component is adapted to the temperature variable portion of the mounting wall panels, that is, during the operation of the optical drum, a temperature regulating component is provided at a portion of the mounting wall panel where the temperature changes, and the position of the temperature change during the operation of the mounting wall panel is adjusted by the temperature regulating component to reduce the overall temperature change of the mounting wall panel, while ensuring that the temperature changes of the mounting wall panels on both sides of the optical drum are consistent, thereby ensuring the working accuracy of the double drums and improving the plate making accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of a CTP direct plate-making machine, in particular to a high-precision temperature balancing structure for reducing thermal expansion and contraction deformation. Background Art

[0002] In a dual-drum direct platemaking machine, the drum is the core component of the platemaking equipment. During the operation of the platemaking machine, since the drum needs to run at high speed, the rolling friction of its bearing causes the temperature of the two wall panels where the drum is installed to rise. The cast iron area of ​​the dual-drum wall panel is large. According to the current layout of the drum on the wall panel, the distance between the drum and the right side of the wall panel is much smaller than the distance between the drum and the left side of the wall panel. When the drum rotates, the heat generated by the rolling friction of the bearing installed on the wall panel will cause the wall panel to deform. Through the principle of thermal expansion and contraction, the deformation of the wall panel will cause the wall panel to tilt to the left, resulting in the phenomenon that the upper and lower drum positioning of the drum is inconsistent during the operation of the platemaking machine. The dual-drum high-precision imaging thermal expansion and contraction system can accurately balance the temperature of the wall panel and evenly distribute the heat of the wall panel through the temperature control of the wall panel, so that the platemaking equipment can stably make plates and maintain the same positioning accuracy. Summary of the invention

[0003] In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a high-precision temperature balance structure for reducing thermal expansion and contraction deformation, which is used for plate-making equipment to stabilize plate-making and maintain constant positioning accuracy.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A high-precision temperature balance structure for reducing thermal expansion and contraction deformation includes a light drum and a mounting wall panel. The light drum is rotatably mounted on the mounting wall panel. A temperature regulating component for regulating the local temperature of the mounting wall panel is provided on the mounting wall panel. The temperature regulating component is adapted to the temperature variable portion of the mounting wall panel.

[0006] As a preferred solution of the utility model, the temperature adjustment component includes a heat sink, and the heat sink is adapted to the heating position of the installation wall panel.

[0007] As a preferred solution of the utility model, the heat sink is installed on the installation wall panel through a transition connector, and the heat sink dissipates heat to the wall panel through the transition connector.

[0008] As a preferred solution of the utility model, the optical drum is rotatably mounted on the mounting wall panel via a rotating shaft, and the heat sink is arranged on the periphery of the rotating shaft, and the heat sink is used to dissipate heat at the connection between the mounting wall panel and the rotating shaft.

[0009] As a preferred solution of the utility model, the temperature adjustment component includes a water cooling block, and the water cooling block is arranged on the installation wall plate on one side so that the installation wall plates on both sides of the optical drum are heated uniformly.

[0010] As a preferred solution of the utility model, a drive motor for driving the optical drum to rotate is installed on the installation wall plate on one side of the optical drum, and a water cooling block is installed on the installation wall plate on the other side of the optical drum, and the position of the water cooling block is opposite to that of the drive motor.

[0011] As a preferred solution of the utility model, a connecting through hole is provided in the middle of the transition connector, and the connecting through hole is coaxially arranged with the rotating shaft.

[0012] As a preferred solution of the utility model, a rotating mounting piece is arranged on the outer side of the rotating shaft, and the inner wall of the connecting through hole and the outer side wall of the rotating mounting piece are located in the same arc surface.

[0013] As a preferred solution of the utility model, a plurality of heat sinks are evenly arranged on the transition connector, and the centers of the plurality of heat sinks are located on the same trajectory circle.

[0014] As a preferred solution of the utility model, the heat sink includes a cooling fin, a heat sink and a heat sink fan, the heat sink is installed on the cooling fin, and the heat sink fan is installed on the heat sink.

[0015] As a preferred solution of the utility model, two optical drums are arranged between the installation wall panels, and heat sinks are evenly distributed on the periphery of the rotating shaft of each optical drum.

[0016] The beneficial effect of the utility model is that the position of the temperature change during the installation of the wallboard is adjusted by the temperature regulating component, thereby reducing the overall temperature change of the installed wallboard, while ensuring that the temperature change of the installed wallboard on both sides of the optical drum is consistent, thereby ensuring the working accuracy of the double drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the optical drum installation structure.

[0018] Figure 2 This is the right side view of the optical drum installation structure.

[0019] Figure 3 This is a left side view of the optical drum installation structure.

[0020] Figure markings: optical drum 1, mounting wall panel 2, rotating shaft 3, heat sink 4, cooling fin 4-1, heat sink 4-2, cooling fan 4-3, transition connector 5, motor side heat sink 5-1, non-motor side heat sink 5-2, connecting through hole 5-3, pulley 6, water cooling block 7, drive motor 8, rotating mounting part 9, bearing 9-1, bearing sleeve 9-2. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] A high-precision temperature balance structure for reducing thermal expansion and contraction deformation includes two mounting wall panels 2 and two optical drums 1. The two optical drums 1 are respectively mounted between the two mounting wall panels 2. A temperature regulating component is provided on the mounting wall panels. The temperature regulating component is adapted to the temperature variable portion of the mounting wall panels 2. That is, during the operation of the optical drums, the temperature regulating component is provided at the portion of the mounting wall panels 2 where the temperature changes. The position of the temperature change during the operation of the mounting wall panels is adjusted by the temperature regulating component to reduce the overall temperature change of the mounting wall panels. At the same time, the temperature changes of the mounting wall panels on both sides of the optical drums are kept consistent, thereby ensuring the working accuracy of the double drums and improving the plate making accuracy.

[0023] According to the thermal expansion coefficient of cast iron, it is calculated that every 1°C increase between the two optical drums will cause the wallboard to expand and deform within a range of 0.005mm. In order to reduce the expansion and deformation of the wallboard, the temperature adjustment component includes a plurality of heat sinks 4 installed on the installation wallboard 2. The heat sinks 4 are arranged on the periphery of the two rotating shafts 3. The heat sinks 4 are used to dissipate heat at the connection between the installation wallboard 2 and the rotating shaft 3, thereby reducing the deformation of the installation wallboard 2 caused by the heat generated by the rotation of the optical drum 1, thereby improving the working accuracy of the optical drum 1 and improving the plate making accuracy.

[0024] When the heat sink 4 is in direct contact with the mounting wall panel 2, the temperature of the mounting wall panel 2 at the corresponding position of the heat sink 4 will be significantly lower than the temperature at other positions, which may easily cause the mounting wall panel 2 to twist, thereby affecting the accuracy of the optical drum 1. To ensure that the heat sink 4 can evenly dissipate heat for the mounting wall panel 2, the heat sink 4 is installed on the mounting wall panel 2 through a transition connector 5. The heat sink 4 first dissipates heat for the transition connector 5, and then the transition connector 5 dissipates heat for the mounting wall panel 2. The heat can be transferred to the mounting wall panel 2 more evenly through the transition connector 5.

[0025] In this embodiment, the transition connector 5 includes a motor-side heat sink 5-1 and a non-motor-side heat sink 5-2 of different shapes. The motor-side heat sink 5-1 is fixed on the mounting wall panel 2 on which the drive motor 8 is installed, and the non-motor-side heat sink 5-2 is fixed on the mounting wall panel 2 on which the drive motor 8 is not installed, so that the motor-side heat sink 5-1 and the non-motor-side heat sink 5-2 meet the installation requirements on different mounting wall panels 2.

[0026] The motor side heat sink 5-1 includes two semicircular unit heat sinks, each of which has two heat sinks 4 evenly mounted thereon. Adjacent heat sinks 4 on the motor side heat sink 5-1 are provided with heat sink gaps, and at least one heat sink gap is larger than the diameter of the pulley 6 to prevent the heat sink 4 from interfering with the belt of the optical drum 1 driving component. The centers of the four heat sinks 4 on the motor side heat sink 5-1 are on the same trajectory circle.

[0027] The non-motor side heat sink 5-2 is in a circular shape and is provided with a notch to prevent the non-motor side heat sink 5-2 from interfering with other components installed on the mounting wall panel 2. Four heat sinks 4 are installed on the non-motor side heat sink 5-2, and the centers of the four heat sinks 4 on the non-motor side heat sink 5-2 are on the same trajectory circle.

[0028] A rotating mounting part 9 is installed on the outer side of the rotating shaft 3 of the optical drum 1, and the rotating mounting part 9 includes a bearing 9-1 and a bearing sleeve 9-2. The bearing 9-1 is sleeved on the outer side of the rotating shaft 3, and the bearing 9-1 is installed on the mounting wall panel 2 through the bearing sleeve 9-2. A driving motor 8 is installed on the mounting wall panel 2 on the right side of the optical drum 1, and the driving motor 8 is connected to the rotating shaft 3 of the optical drum 1 through a pulley 6 and a belt.

[0029] A connecting through hole 5-3 is provided in the middle of the motor side heat sink 5-1 and the non-motor side heat sink 5-2. The connecting through hole 5-3 is coaxially arranged with the rotating shaft 3. The inner wall of the connecting through hole 5-3 and the outer wall of the bearing sleeve 9-2 are located in the same arc surface, which is convenient for the transition connector 5 to absorb the heat transferred from the bearing sleeve 9-2 to the mounting wall panel 2.

[0030] The heat sink 4 includes a cooling fin 4-1, a cooling fin 4-2 and a cooling fan 4-3. The cooling fin 4-1 is a semiconductor cooling fin, and the cooling fin of the semiconductor cooling fin is fixed on the transition connector 5. The cooling fin 4-2 is installed on the heating surface of the cooling fin 4-1. The cooling fan 4-3 is installed on the cooling fin 4-2. The heating surface of the cooling fin 4-1 is cooled by the cooling fan 4-3 and the cooling fin 4-2.

[0031] Since a drive motor 8 for driving the optical drum is installed on one side of the wall panel, and no drive motor 8 is installed on the other side, the drive motor 8 will also generate heat during operation, thereby increasing the deformation of the installation wall panel 2, which is likely to cause the position of the laser focus to change, and the position of the engraved plate image to shift accordingly, affecting the printing accuracy. In order to ensure that the heat distribution of the left and right installation wall panels 2 of the optical drum 1 is consistent, a water cooling block 7 is installed on the left installation wall panel 2. The position of the water cooling block 7 is opposite to the position of the drive motor 8. The installation wall panel 2 is heated by the water cooling block 7, so that the heat distribution of the left and right installation wall panels 2 is consistent. The water cooling block 7 forms a cycle with the water cooling mechanism for heat dissipation of the laser box in the dual optical drum device, which can make the heat of the laser box reach the position of the water cooling block 7 through the cycle, and can also enhance the heat dissipation effect of the laser box.

[0032] The principle of this high-precision temperature balance structure to improve the working accuracy of the optical drum is as follows:

[0033] (1) The heat generated by the rotation of the connection between the optical drum 1 and the mounting wall panel 2 is eliminated through the heat sink 4, which affects the precision of the mounting wall panel 2;

[0034] (2) The heat generated by the driving motor 8 is simulated by the water cooling block 7, so that the same positions on the mounting wall panels 2 on both sides of the optical drum 1 are subjected to the same external heat, ensuring that the mounting wall panels 2 are in the same thermal state, thereby further improving the working accuracy of the optical drum 1.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0036] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation, characterized in that: The optical drum (1) comprises an optical drum (1) and a mounting wall panel (2), wherein the optical drum (1) is rotatably mounted on the mounting wall panel (2), and a temperature regulating component for regulating the local temperature of the mounting wall panel (2) is provided on the mounting wall panel (2), wherein the temperature regulating component is adapted to a temperature-changing portion of the mounting wall panel (2).

2. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 1, characterized in that: The temperature adjustment component comprises a heat sink (4), and the heat sink (4) is adapted to a heating position of the mounting wall panel (2).

3. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 2, characterized in that: The heat sink (4) is mounted on the mounting wall panel (2) via a transition connector (5), and the heat sink (4) dissipates heat from the wall panel via the transition connector (5).

4. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 2, characterized in that: The optical drum (1) is rotatably mounted on the mounting wall plate (2) via a rotating shaft (3); a heat sink (4) is arranged on the periphery of the rotating shaft (3); and heat is dissipated at the connection between the mounting wall plate (2) and the rotating shaft (3) via the heat sink (4).

5. The high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 1, characterized in that: The temperature adjustment component comprises a water cooling block (7), and the water cooling block (7) is arranged on a mounting wall plate (2) on one side so that the mounting wall plates (2) on both sides of the optical drum (1) generate heat uniformly.

6. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 5, characterized in that: A driving motor (8) for driving the optical drum (1) to rotate is installed on the mounting wall plate (2) on one side of the optical drum (1), and a water cooling block (7) is installed on the mounting wall plate (2) on the other side of the optical drum (1), and the position of the water cooling block (7) is opposite to that of the driving motor (8).

7. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 3, characterized in that: A connecting through hole (5-3) is provided in the middle of the transition connecting piece (5), and the connecting through hole (5-3) is coaxially arranged with the rotating shaft (3).

8. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 7, characterized in that: A rotating mounting member (9) is arranged on the outside of the rotating shaft (3), and the inner wall of the connecting through hole (5-3) and the outer wall of the rotating mounting member (9) are located in the same arc surface.

9. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 2, characterized in that: The heat sink (4) comprises a refrigeration fin (4-1), a heat sink (4-2) and a heat dissipation fan (4-3); the heat sink (4-2) is mounted on the refrigeration fin (4-1), and the heat dissipation fan (4-3) is mounted on the heat sink (4-2).

10. A high-precision temperature balance structure for reducing thermal expansion and contraction deformation according to claim 1, characterized in that: Two optical drums (1) are arranged between the installation wall panels (2), and heat sinks (4) are evenly distributed on the periphery of the rotating shaft (3) of each optical drum (1).

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