Cooling plate and screen printing machine

Abstract

The embodiment of the utility model discloses a sub-cooling plate and a screen printing machine, the cooling plate is configured to cool a rotor of a linear motor, the rotor is fixedly connected with a printing table of the screen printing machine through the cooling plate, a cooling flow channel is arranged in the cooling plate, and an inlet and an outlet which communicate with the two ends of the cooling flow channel correspondingly are formed in the cooling plate; the inlet is configured for the cooling machine to provide a cooling medium into the cooling flow channel. According to the embodiment of the invention, the problem of large potential safety hazards caused by arrangement of the cooling pipeline in the rotor coil is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screen printing machines, in particular to a cooling plate and a screen printing machine. BACKGROUND

[0002] In the working process of a screen printing machine, a linear motor that drives the printing table to move is crucial. The linear motor is usually composed of a stator and a mover, and the mover is fixedly installed on the printing table through a mounting plate. The mover moves along the stator to drive the printing table to move, thereby realizing the functions of carrying and conveying battery pieces. However, since the linear motor is in a high-load operating state for a long time, the heating power of the mover is high. High temperature not only shortens the service life of the mover, but also easily causes safety accidents. Therefore, the demand for cooling the mover of the linear motor is increasingly urgent.

[0003] A cooling method for the mover of the screen printing machine is to set a cooling pipeline in the mover coil. However, the cooling pipeline is prone to liquid leakage during long-term use, which has a great safety hazard. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a cooling plate and a screen printing machine, which solve the problem of great safety hazard caused by setting a cooling pipeline in the mover coil in the prior art.

[0005] The object of the present application can be achieved by the following technical solutions:

[0006] In a first aspect, the present application provides a cooling plate configured to cool a mover of a linear motor. The mover is fixedly connected to a printing table of a screen printing machine through the cooling plate. The cooling plate is provided with a cooling flow channel. The cooling plate is provided with an inlet and an outlet respectively communicating with two ends of the cooling flow channel. The inlet is configured to supply a cooling medium into the cooling flow channel by a cooling machine.

[0007] The cooling flow channel is externally arranged on the independent cooling plate, which avoids the liquid leakage hazard of the traditional cooling pipeline integrated in the mover during long-term use, greatly improves the safety of equipment operation, or avoids the disadvantage of increased load caused by the traditional arrangement of the cooler on the mover. At the same time, the cooling plate can be separately disassembled and repaired, so that the cooling flow channel can be maintained without stopping the machine and disassembling the mover, which is convenient and efficient.

[0008] Optionally, at least one side surface of the cooling plate that does not contact the mover or the printing table is provided with a first heat dissipation fin.

[0009] The first heat dissipation fin increases the heat dissipation surface area, strengthens the convection heat dissipation, and accelerates the heat transfer from the cooling plate to the ambient air.

[0010] Optionally, the side of the cooling plate fixedly connected with the mover is pre-coated with a heat-conducting silicone grease, which is configured to improve the heat transfer efficiency between the cooling plate and the mover.

[0011] By arranging the heat-conducting silicone grease, the microscopic gap of the contact surface can be filled, the interface thermal resistance is reduced, and the efficient heat transfer of the mover to the cooling plate is ensured.

[0012] In a second aspect, the present application provides a screen printing machine, which comprises a printing table, a rack, a stator, a mover and a cooling plate according to any one of the above, the stator is arranged on the rack and extends in a horizontal direction, the printing table is slidably mounted on the rack in the horizontal direction, the mover is arranged beside the stator and fixedly connected with the printing table through the cooling plate, and the mover is configured to move along the extension direction of the stator to drive the printing table to move in the horizontal direction.

[0013] By integrating the cooling plate as a standard component into the screen printing machine, the cooling flow channel is externally arranged in the independent cooling plate, avoiding the leakage risk of the traditional internal cooling pipeline of the mover, and greatly improving the safety. At the same time, the cooling plate can be individually disassembled and maintained, and the mover does not need to be disassembled when maintaining the cooling flow channel, which is convenient and efficient.

[0014] Optionally, at least one side of the mover which does not contact the cooling plate is provided with a second heat dissipation fin.

[0015] By arranging the second heat dissipation fin on the mover to cover the outer surface of the mover, the heat dissipation area is maximized, and the heat dissipation effect of the mover is further improved.

[0016] Optionally, the screen printing machine further comprises:

[0017] A first flow meter configured to detect the amount of liquid flowing from the inlet;

[0018] A second flow meter configured to detect the amount of liquid flowing from the outlet.

[0019] By comparing the flow difference between the inlet and the outlet, the leakage problem of the cooling flow channel can be immediately found, and the abnormal flow data can provide an early warning for maintenance, avoiding equipment damage due to cooling failure.

[0020] Optionally, the screen printing machine further comprises a dust cover fixedly arranged on the rack, the dust cover forms a mover channel with openings at both ends and the bottom inside, the stator is fixedly installed on the inner side wall of the dust cover, and part of the structure of the mover extends downward from the bottom opening of the dust cover and is fixedly connected with the printing table through the cooling plate.

[0021] By arranging the dust cover to isolate external dust, the friction loss or heat dissipation performance of the stator / mover caused by dust adhesion is avoided.

[0022] Optionally, the screen printing machine further comprises a fan, the fan being arranged at least at one end of the rotor channel, and the fan being configured to blow air or suck air into the rotor channel to cool the rotor and the stator.

[0023] By arranging the fan, forced air flow can be provided to take away heat on the surface of the stator and the rotor, making up for the deficiency of natural convection, and forming a "liquid cooling + air cooling" double-mode heat dissipation with the flow channel of the cooling plate to adapt to different working conditions.

[0024] Optionally, when the fan is configured to blow air into the rotor channel, the screen printing machine further comprises a cooling row matched with the fan, the cooling row being arranged at an air outlet of the fan, and the cooling row being configured to cool the air blown into the rotor channel by the fan.

[0025] By cooling the air with the cooling row before blowing it to the rotor, the heat dissipation effect is enhanced, and the heat dissipation efficiency is prevented from being reduced due to blowing hot air from the environment directly into the channel.

[0026] Optionally, the screen printing machine further comprises a cooling assembly arranged at one side of the dust cover, and the cooling assembly being configured to cool the dust cover.

[0027] By reducing the surface temperature of the dust cover, the influence of heat radiation from the dust cover on the working environment of the workshop is avoided, the working temperature of the stator is indirectly reduced, and the performance of the stator is prevented from being reduced due to the increase of the ambient temperature. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below with reference to the accompanying drawings.

[0029] Figure 1 is a structure diagram of the assembly of the cooling plate and the rotor in one embodiment of the present application;

[0030] Figure 2 is a structure diagram of the screen printing machine in one embodiment of the present application;

[0031] Figure 3 is a structure diagram of the screen printing machine in one embodiment of the present application;

[0032] Figure 4 is an end view of the dust cover in one embodiment of the present application;

[0033] Figure 5 is a structure diagram of the state that the end of the rotor is exposed from the dust cover in one embodiment of the present application.

[0034] Explanation of Reference Signs:

[0035] 10, cooling plate; 11, inlet; 12, outlet; 13, first heat dissipation fin; 20, printing platform; 21, rack; 22, stator; 23, mover; 24, load plate; 25, dust cover; 26, cooling assembly; 27, sliding rail; 28, sliding block; 100, silk screen printer. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0037] Referring to FIGS. 1 and 2, Figure 1 and Figure 2 In some embodiments, the present application provides a cooling plate 10 configured to cool a mover 23 of a linear motor, the mover 23 being fixedly connected to a printing platform 20 of a silk screen printer 100 through the cooling plate 10. The cooling plate 10 is provided with a cooling flow channel (not shown) therein, and the cooling plate 10 is provided with an inlet 11 and an outlet 12 respectively communicating with two ends of the cooling flow channel, the inlet 11 being configured to supply a cooling medium into the cooling flow channel by a cooling machine.

[0038] Specifically, the cooling plate 10 is usually made of a metal material with good heat conduction performance, such as aluminum alloy, to ensure efficient conduction of heat generated by the mover 23. The cooling flow channel is designed in a meandering path inside the cooling plate 10, which can increase the residence time of the cooling medium in the plate and make it fully absorb the heat transferred from the mover 23. For example, the cooling flow channel is composed of two transverse sections extending along the length direction of the cooling plate 10 and a longitudinal section extending along the width direction, and the two transverse sections are communicated through the longitudinal section. The inlet 11 and the outlet 12 are both arranged at the same end of the cooling plate 10, and the inlet 11 and the outlet 12 will be equipped with appropriate connecting pipe fittings to facilitate sealed connection with the pipeline of the cooling machine and ensure that the cooling medium will not leak during circulation.

[0039] By externally arranging the cooling flow channel to the independent cooling plate 10, the risk of liquid leakage during long-term use of the traditional cooling pipeline integrated in the mover 23 is avoided, and the safety of equipment operation is greatly improved. At the same time, the cooling plate 10 can be separately disassembled and repaired, and the cooling flow channel can be maintained without stopping and disassembling the mover 23, which is convenient and efficient.

[0040] Referring to FIGS. 1 and 2, Figure 1 In some embodiments, at least one side of the cooling plate 10 not in contact with the mover 23 or the printing platform 20 is provided with a first heat dissipation fin 13, Figure 1 In the first heat dissipation fin 13, the first heat dissipation fin 13 is arranged on a side of the cooling plate 10 away from the mover 23.

[0041] Specifically, the first heat dissipation fins 13 are perpendicular to the surface of the cooling plate 10 and are arranged in a close arrangement on the side of the cooling plate 10. The first heat dissipation fins 13 are made of the same material as or similar to the cooling plate 10 to ensure good bonding and heat dissipation performance. The size of the first heat dissipation fins 13 is designed according to the size of the cooling plate 10 to ensure that the surface of the cooling plate 10 is maximally covered, the heat dissipation surface area of the cooling plate 10 is increased, the heat dissipation effect is enhanced by using natural or forced convection of air, the heat transfer from the cooling plate 10 to the ambient air is accelerated, and the cooling efficiency of the cooling plate 10 on the mover 23 is further improved. Optionally, the cooling plate 10 and the first heat dissipation fins 13 are also pre-coated with heat dissipation silicone grease to improve the heat conduction performance.

[0042] In some embodiments, the surface of the cooling plate 10 fixedly connected to the mover 23 is pre-coated with heat-conducting silicone grease (not shown), which is configured to improve the heat transfer efficiency between the cooling plate 10 and the mover 23.

[0043] Specifically, the heat-conducting silicone grease is evenly applied between the mover 23 and the cooling plate 10. The heat-conducting silicone grease has good adhesion and can be firmly attached to the two connecting surfaces, and has high thermal conductivity, which can effectively fill the microscopic uneven gaps on the contact surface, reduce the interfacial thermal resistance, and enable the heat generated by the mover 23 to be more efficiently transferred to the cooling plate 10, thereby improving the heat dissipation performance of the entire cooling system.

[0044] Referring to Figures 2-5 In some embodiments, the present application also provides a screen printing machine 100, which includes a printing table 20, a rack 21, a stator 22, a mover 23, and a cooling plate 10 as described above. The stator 22 is arranged on the rack 21 and extends in the horizontal direction. The printing table 20 is slidably mounted on the rack 21 in the horizontal direction. The mover 23 is arranged beside the stator 22 and is fixedly connected to the printing table 20 through the cooling plate 10. The mover 23 is configured to move along the extension direction of the stator 22 to drive the printing table 20 to move in the horizontal direction.

[0045] Specifically, the frame 21 is generally selected from high-strength metal frame structure or marble platform, which aims to ensure sufficient stability and carrying capacity to provide stable support for other parts of the screen printing machine 100. The stator 22 is stably mounted on the frame 21, and the extension direction thereof is specially designed according to the moving stroke of the printing table 20, so as to accurately match the moving requirement of the printing table 20. The printing table 20 is connected with the frame 21 through the load plate 24, and the frame 21 is provided with the sliding rail 27, and the load plate 24 is slidably connected with the sliding rail 27 through the sliding block 28, so that the printing table 20 can smoothly slide on the frame 21. One side of the cooling plate 10 is fixedly connected with one side of the load plate 24, and then the mover 23 is connected with the load plate 24 through the cooling plate 10, so as to realize the connection between the mover 23 and the printing table 20. This connection mode not only ensures the stable connection between the mover 23 and the printing table 20, but also provides the cooling function for the mover 23 through the cooling plate 10, so as to ensure that the mover 23 maintains a good working state during operation. The leakage risk of the traditional internal cooling pipeline of the mover 23 is avoided, and the safety is greatly improved. At the same time, the cooling plate 10 can be separately disassembled and maintained, and the spare part of the cooling plate 10 is directly replaced with the cooling plate 10 to be maintained, which is convenient and efficient.

[0046] In some embodiments, at least one side surface of the mover 23 which is not in contact with the cooling plate 10 is provided with a second heat dissipation fin (not shown).

[0047] Specifically, for example, the second heat dissipation fin can be arranged on the upper surface of the mover 23, and the shape and arrangement of the second heat dissipation fin are similar to those of the first heat dissipation fin 13 on the cooling plate 10. The material of the second heat dissipation fin is generally the same as or similar to that of the mover 23, so as to ensure good combination and heat dissipation performance. The size of the second heat dissipation fin is designed according to the size of the mover 23, so as to ensure that the surface of the mover 23 is maximally covered and the heat dissipation area is increased. By arranging the second heat dissipation fin on the mover 23, the heat dissipation area of the mover 23 is further increased, the heat dissipation effect of the mover 23 is improved, the temperature of the mover 23 is reduced, and the influence of high temperature on the performance and service life of the mover 23 is reduced. Optionally, the second heat dissipation fin and the mover 23 are also pre-coated with heat dissipation silicone grease, so as to improve the heat transfer performance.

[0048] In some embodiments, the screen printing machine 100 further comprises a first flow meter (not shown) configured to detect the amount of liquid flowing from the inlet 11, and a second flow meter (not shown) configured to detect the amount of liquid flowing from the outlet 12.

[0049] Specifically, the first flow meter and the second flow meter are installed on the inlet 11 and outlet 12 pipes of the cooling plate 10, and generally adopt high-precision measuring instruments such as electromagnetic flow meters or turbine flow meters. The flow meters are connected with the pipes by screw threads or flanges, etc., to ensure firm installation and good sealing. The flow meters are connected with the control system of the screen printing machine 100, and transmit the detected flow data to the control system in real time. By comparing the flow differences detected by the first flow meter and the second flow meter at the inlet 11 and outlet 12, it can be immediately found out whether there is a leakage problem in the cooling flow channel. Once the flow difference exceeds the predetermined value, the control system can timely issue an alarm to provide early warning for equipment maintenance, avoid equipment damage due to cooling failure, and ensure the normal operation of the screen printing machine 100.

[0050] Referring to Figures 2-5 As shown in the drawings, in some embodiments, the screen printing machine 100 further comprises a dust cover 25 fixedly arranged on the rack 21, and a mover 23 passage with both ends and a bottom opening is formed in the inside of the dust cover 25. The stator 22 is fixedly installed on the inner side wall of the dust cover 25, and part of the structure of the mover 23 extends downward from the bottom opening of the dust cover 25 and is fixedly connected with the printing table 20 through the cooling plate 10.

[0051] Specifically, the dust cover 25 is made of metal sheet and is fixed on the rack 21 by screws, bolts or buckles, etc. The shape of the dust cover 25 is designed according to the structure of the mover 23 and the stator 22. For example, the dust cover 25 is a shell with a reverse U-shaped cross section, the top is closed, and the bottom opening is slightly wider than the width of the mover 23. The stator 22 is arranged in two rows (or in a single row) to ensure the stability of the position of the stator 22 during work. The two rows of stators 22 are fixedly installed on the opposite two inner side walls of the dust cover 25 by bolt fastening or glue sticking, etc.; if it is a single row of stators 22, it can be arranged on any one of the opposite two inner side walls of the dust cover 25. Optionally, the mover 23 is in an I-shaped structure, which passes through the gap between the two rows of stators 22. And the bottom of the mover 23 extends out of the opening at the bottom of the dust cover 25, and the cooling plate 10 is fixedly adjacent to the bottom surface of the mover 23, so that the dust cover 25, the stator 22, the mover 23 and the cooling plate 10 cooperate with each other, not only achieving effective protection of the mover 23 and the stator 22 to avoid external dust from entering and affecting their performance, but also ensuring that the mover 23 can smoothly pass through the cooling plate 10 to connect with the printing table 20, thereby ensuring the normal operation of the conveying mechanism of the screen printing machine 100.

[0052] In some embodiments, the screen printing machine 100 further comprises a fan (not shown) arranged at least at one end of the mover 23 passage, and the fan is configured to blow air or suck air into the mover 23 passage to cool the mover 23 and the stator 22.

[0053] Specifically, the fan generally adopts an axial fan or a centrifugal fan, and a suitable model is selected according to the size of the channel of the mover 23 and the heat dissipation requirement. The fan is installed at one end of the channel of the mover 23 and is fixed on the rack 21 through a support. The air outlet or air inlet of the fan is aligned with the channel of the mover 23 to ensure that the air can be effectively blown or sucked into the channel. For example, the fan at one end of the channel of the mover 23 blows air into the channel, and the fan at the other end of the channel of the mover 23 sucks air into the channel; or both the fans at the two ends of the channel of the mover 23 blow air into the channel.

[0054] The forced air flow provided by the fan can carry away the heat on the surface of the stator 22 and the mover 23, making up for the deficiency of natural convection heat dissipation. The cooling flow channel in the cooling plate 10 forms a “liquid cooling + air cooling” double-mode heat dissipation, which can adjust the heat dissipation mode according to different working conditions, improve the heat dissipation efficiency, and adapt to the heat dissipation requirements of the screen printing machine 100 in different working environments.

[0055] In some embodiments, when the fan is configured to blow air into the channel of the mover 23, the screen printing machine 100 further comprises a cooling row (not shown) cooperating with the fan, the cooling row being arranged at the air outlet of the fan, and the cooling row being configured to cool the air blown into the channel of the mover 23 by the fan.

[0056] Specifically, the cooling row generally adopts a heat dissipation structure formed by a copper pipe, and a cooling liquid flows in the copper pipe. The cooling liquid can be water or a special coolant. The cooling row is installed at the air outlet of the fan and is fixed by means of bolts, clamps or the like to ensure close connection with the air outlet of the fan. The size of the cooling row is designed according to the air volume of the fan and the heat dissipation requirement to ensure that the air blown into the channel of the mover 23 can be sufficiently cooled, so as to avoid the decrease of heat dissipation efficiency caused by the direct blowing of the fan into the channel of the mover 23, and further improve the cooling effect of the mover 23 and the stator 22.

[0057] Please refer to Figure 3 In some embodiments, the screen printing machine 100 further comprises a cooling assembly 26 arranged at one side of the dust cover 25, and the cooling assembly 26 is configured to cool at least the dust cover 25.

[0058] Specifically, the cooling assembly 26 can be an air-cooled radiator or a liquid-cooled radiator. If it is an air-cooled radiator, it is generally composed of a fan and a heat dissipation fin, the fan being installed on one side of the heat dissipation fin and carrying away heat by blowing to the heat dissipation fin; if it is a liquid-cooled radiator, it contains a cooling liquid circulation pipeline and a heat dissipation row, the cooling liquid circulating in the pipeline, the cooling liquid circulation pipeline being fixed on one side of the dust cover 25 and being in close contact with the dust cover 25 or being connected through a heat-conducting medium to ensure effective heat transfer, the cooling liquid circulation pipeline absorbing the heat of the dust cover 25 and then dissipating the heat through the heat dissipation row.

[0059] The dust cover 25 surface temperature is reduced by setting the cooling assembly 26, avoiding the dust cover 25 radiating too much heat to the surrounding environment, and improving the workshop working environment. At the same time, the mover 23 and the stator 22 working temperature are indirectly reduced, preventing the stator 22 from performance degradation due to the environmental temperature rise, and ensuring the stable operation of the screen printing machine 100.

[0060] The above provides a plurality of embodiments, at least two of which can be combined without conflict, and the corresponding technical effects are obtained accordingly. The embodiments formed by the combination still belong to the scope of the description of the present application, and are not listed one by one. In addition, the above content has been described in detail for one embodiment of the present application, but the content is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage scope of the present application.

[0061] It should be noted that the "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The description of the present application with respect to "left", "right", "left side", "right side", "upper", "lower", "top", "bottom" and the like are defined based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure must be constructed and operated in a particular orientation. Therefore, it cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0062] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A cooling plate, characterized in that, The cooling plate is configured to cool the mover of the linear motor, the mover is fixedly connected with the printing table of the screen printer through the cooling plate, the cooling plate is provided with a cooling flow channel, the cooling plate is provided with an inlet and an outlet respectively communicating with two ends of the cooling flow channel, and the inlet is configured to supply the cooling medium into the cooling flow channel by the cooling machine.

2. Cooling plate according to claim 1, characterized in that At least one side surface of the cooling plate not in contact with the mover or the printing table is provided with a first heat dissipation fin.

3. Cooling plate according to claim 1 or 2, characterized in that The side surface of the cooling plate fixedly connected with the mover is pre-coated with a heat-conducting silicone grease, and the heat-conducting silicone grease is configured to improve the heat transfer efficiency between the cooling plate and the mover.

4. A screen printer characterized by comprising: The screen printer comprises a printing table, a rack, a stator, a mover and the cooling plate according to any one of claims 1-3, the stator is arranged on the rack and extends in the horizontal direction, the printing table is slidably mounted on the rack in the horizontal direction, the mover is arranged beside the stator and fixedly connected with the printing table through the cooling plate, and the mover is configured to move along the extension direction of the stator to drive the printing table to move in the horizontal direction.

5. The screen printer of claim 4, wherein, At least one side surface of the mover not in contact with the cooling plate is provided with a second heat dissipation fin.

6. The screen printer of claim 4, wherein, The screen printer further comprises: A first flow meter configured to detect the amount of liquid flowing from the inlet; A second flow meter configured to detect the amount of liquid flowing from the outlet.

7. The screen printer according to any one of claims 4-6, characterized in that The screen printer further comprises a dust cover fixedly arranged on the rack, a mover channel with open ends and a bottom is formed in the dust cover, the stator is fixedly installed on the inner side wall of the dust cover, and part of the structure of the mover extends downward from the bottom opening of the dust cover and is fixedly connected with the printing table through the cooling plate.

8. The screen printer of claim 7, wherein, The screen printer further comprises a fan arranged at least at one end of the mover channel, and the fan is configured to blow air or exhaust air into the mover channel to cool the mover and the stator.

9. The screen printer of claim 8, wherein, When the fan is configured to blow air into the mover channel, the screen printer further comprises a cooling row matched with the fan, the cooling row is arranged at the air outlet of the fan, and the cooling row is configured to cool the air blown into the mover channel by the fan.

10. The screen printer of claim 7, wherein, The screen printer further comprises a cooling assembly arranged on one side of the dust cover, and the cooling assembly is configured to cool the dust cover.

Images