Hard rail structure belt cooling linear motor module

Abstract

The invention discloses a hard rail structure belt cooling linear motor module, and relates to the technical field of cooling, the hard rail structure belt cooling linear motor module comprises a base, hard rails symmetrically distributed along the base are detachably arranged on the base, a sliding seat is slidably connected between the symmetrically distributed hard rails, the base is fixedly connected with a linear motor, and the linear motor is fixedly connected with the sliding seat. The linear motor is used for driving the sliding base to slide on the hard rail, first cooling holes symmetrically distributed along the sliding base are formed in the sliding base, second cooling holes are formed in the hard rail, and the side, close to the water inlet end, of the base is fixedly communicated with a first connecting box. According to the linear motor module, the base and the double hard rails jointly form a bilateral saddle type structure, the linear motor is matched to serve as a power source, and the hard rails and the sliding seats are provided with water cooling structures, so that the linear motor module is large in bearable load, controllable in temperature rise, small in thermal deformation, capable of performing high-speed reciprocating motion and high in motion precision.

Description

Technical Field

[0001] The invention relates to the technical field of cooling, and in particular to a linear motor module with a hard rail structure and cooling. Background Art

[0002] Linear motor modules are widely used in high-precision, high-speed automation equipment, especially in semiconductor manufacturing, precision machining, medical equipment, 3C product assembly and other fields.

[0003] However, the traditional hard rail structure adopts a fixed hard rail and a base integrally formed design, and a saddle structure is used with a lead screw to enable the slider or slide seat to achieve linear motion. The heat generated by friction and current loss is difficult to dissipate effectively, resulting in excessive temperature rise. Due to the lack of effective cooling measures, the guide rails and slide seats will undergo different degrees of thermal expansion after long-term operation, resulting in increased deviation of the motion trajectory and affecting the overall performance. Especially in high-precision applications, even slight thermal deformation may have serious consequences, which not only affects the efficiency of the motor, but also causes thermal deformation of the guide rails and slide seats, reducing motion accuracy. In addition, although the traditional hard rail structure has high rigidity and stability, it is prone to loss of accuracy due to wear during long-term operation, resulting in high cost of use.

[0004] To this end, the present invention proposes a linear motor module with a hard rail structure and cooling. Summary of the invention

[0005] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a linear motor module with a hard rail structure and cooling.

[0006] A hard rail structure with a cooling linear motor module includes a base, the base is detachably provided with the hard rails symmetrically distributed along the base, a slide seat is slidably connected between the symmetrically distributed hard rails, the base is fixedly connected to the linear motor, and the linear motor is used to drive the slide seat to slide on the hard rail, the slide seat is provided with a first cooling hole symmetrically distributed along the slide seat, and a second cooling hole is provided in the hard rail, a first connecting box is fixedly connected to a side of the base close to a water inlet end, the first connecting box is connected to the second cooling hole, a guide block is fixedly connected to the first connecting box, an arc surface is arranged in the middle of the guide block, a rotating plate is rotatably connected to the first connecting box, the rotating plate is used to regulate the amount of cooling water entering the second cooling hole, the rotating plate contacts the arc surface of the guide block, and a second connecting box is fixedly connected to a side of the base close to a water outlet end, and the second connecting box is connected to the second cooling hole.

[0007] More preferably, it also includes a rotating frame, which is rotatably connected to the base, a torsion spring is fixed between the rotating frame and the base, a rotating rod is fixed to the side of the rotating frame close to the second connecting box, a fixed cylinder symmetrically distributed along the second connecting box is fixed in the second connecting box, a heat expansion agent is stored in the fixed cylinder, a sliding cylinder is slidably connected in the fixed cylinder, a sliding rod is slidably connected in the sliding cylinder, the same spring is fixed between the sliding rod and the adjacent sliding cylinder, a fixed rail is fixed to the side of the base close to the first connecting box, the fixed rail is slidably connected to the sliding frame, the sliding frame is threadedly connected to the rotating frame, the sliding frame has a movable groove, and the sliding frame is movably connected to the rotating plate through the movable groove.

[0008] More preferably, the thermal expansion agent in the fixed cylinder is set to ethyl acetate.

[0009] More preferably, at least one of the first cooling holes and at least one of the second cooling holes has a heat dissipation pipe built therein.

[0010] More preferably, the inner wall of the heat dissipation pipe is provided with a plurality of protrusions extending toward the center along the circumferential direction.

[0011] More preferably, a heat dissipation tube is further included, and the heat dissipation tube is fixedly connected to the pipe of the second connection box.

[0012] More preferably, a fan is further included, and the fan is fixedly connected to a side of the heat dissipation tube close to the tube opening.

[0013] More preferably, the hard rail and the base are connected via a plurality of bolts.

[0014] Compared with the prior art, the present invention has the following advantages: the base and the double hard rails of the present invention together form a bilateral saddle-type structure, which is matched with a linear motor as a power source, and has a water cooling structure on both the hard rail and the slide seat, so that the linear motor module can withstand a large load, the temperature rise is controllable, the thermal deformation is small, and it can reciprocate at high speed with high motion accuracy.

[0015] The present invention adjusts the water inlet amount of the second cooling holes on the left and right sides by adjusting the deflection angle of the rotating plate, so that most of the cooling water flows to the second cooling hole on the side where the center of gravity of the unbalanced object is biased, thereby enhancing the cooling strength of the hard rail on this side and weakening the cooling strength of the hard rail on the other side, avoiding inconsistent wear degrees of the hard rails on both sides and the two sides of the slide seat, thereby avoiding imbalance of the slide seat.

[0016] The hard rail of the present invention is configured as a detachable structure. Compared with an integrated structure of the base and the hard rail, when the end surface of the hard rail is severely worn, only the hard rail needs to be disassembled and replaced without replacing the base, thereby reducing the use cost.

[0017] The present invention forms a temperature control and adjustment structure by arranging components such as a rotating frame and a torsion spring rotating rod, so that the rotating plate can automatically and accurately deflect according to the frictional heating conditions on both sides.

[0018] The present invention inserts heat dissipation pipes into the first cooling hole and the second cooling hole, thereby increasing the contact area between heat and cooling water, improving the heat transfer rate, and enhancing the cooling effect.

[0019] The present invention starts the fan to blow air into the heat dissipation tube, blows air to the pipe of the second connection box to dissipate heat, and reduces the temperature of the discharged water for subsequent circulation cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the first viewing angle of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the first viewing angle of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the first connection box and guide blocks and other components of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the first connection box, the guide block and the rotating plate of the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the torsion spring, rotating rod, fixing cylinder and other components of the present invention.

[0025] Figure 6 It is a three-dimensional structural schematic diagram of components such as the sliding cylinder, the sliding rod and the spring of the present invention.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the first connection box, fixed rails, sliding rack and other components of the present invention.

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the first connection box, rotating plate, sliding frame and other components of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the hard rail, slide seat, heat dissipation pipe and other components of the present invention.

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the heat dissipation pipe of the present invention.

[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the base, the second connection box and other components of the present invention.

[0031] Fig.12 It is a three-dimensional structural schematic diagram of the base, heat dissipation tube, fan and other components of the present invention.

[0032] Fig.13 It is a three-dimensional structural schematic diagram of the base, hard rails, bolts and other components of the present invention.

[0033] Among them, the above-mentioned drawings include the following drawing marks: 101, base, 102, hard rail, 103, slide seat, 104, linear motor, 105, first cooling hole, 106, second cooling hole, 107, first connecting box, 108, guide block, 109, rotating plate, 110, second connecting box, 201, rotating frame, 202, torsion spring, 203, rotating rod, 204, fixed cylinder, 205, sliding cylinder, 206, sliding rod, 207, spring, 208, fixed rail, 209, sliding frame, 301, heat dissipation pipe, 401, heat dissipation cylinder, 402, fan, 501, bolt. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1: A hard rail structure with cooling linear motor module, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and 13 As shown, the base 101 includes a base 101, and the base 101 is connected to a hard rail 102 symmetrically distributed along the base 101 through a plurality of bolts 501. When installing the hard rail 102, tighten the bolts 501 to fix the hard rail 102 on the base 101. When removing and replacing the hard rail 102, loosen the bolts 501 and take away the hard rail 102. A slide 103 is slidably connected between the hard rails 102 symmetrically distributed along the front-to-back direction. A linear motor 104 is fixedly connected in the middle of the base 101. The linear motor 104 is used to drive the slide 103 to slide forward and backward on the hard rail 102. The slide 103 is provided with first cooling holes 105 symmetrically distributed along the slide 103. There are four first cooling holes 105, and a second cooling hole 106 is opened in the hard rail 102. A first connecting box 107 is fixedly connected to the front side of the base 101, and the first connecting box 107 is connected to the second cooling hole 106. A guide block 108 is fixedly connected to the first connecting box 107, and an arc surface is set in the middle of the guide block 108. A rotating plate 109 is rotatably connected to the first connecting box 107, and the rotating plate 109 is used to adjust the amount of cooling water entering the second cooling hole 106. The rotating plate 109 contacts the arc surface of the guide block 108. A second connecting box 110 is fixedly connected to the rear side of the base 101, and the second connecting box 110 is connected to the second cooling hole 106.

[0036] This is a hard rail structure with cooling linear motor module. The base 101 and the double hard rails 102 together form a double-sided saddle-type structure, which is matched with a linear motor 104 as a power source. The first cooling hole 105 and the second cooling hole 106 are respectively opened on the slide 103 and the hard rail 102 as water cooling channels. The front and rear ends of the first cooling hole 105 are respectively connected to the water inlet pipe and the water outlet pipe, and the first connecting box 107 and the second connecting box 110 are also respectively connected to the water inlet pipe and the water outlet pipe, so that cooling water flows through the first cooling hole 105 and the second cooling hole 106 to cool down the friction heat generated by the high-speed movement of the slide 103 on the hard rail 102.

[0037] When the slide 103 is moving at high speed on the hard rail 102, if the top of the slide 103 carries an object with an unbalanced center of gravity, the hard rail 102 on the heavier side will be subjected to greater pressure, and the friction between it and the slide 103 will be greater, and more friction heat will be generated, while the hard rail 102 on the lighter side will be subjected to less pressure, and the friction between it and the slide 103 will be smaller, and the friction heat will be smaller. In order to prevent the slide 103 from being unbalanced due to inconsistent wear on both sides, the water inlet of the second cooling holes 106 on the left and right sides can be adjusted by adjusting the deflection angle of the rotating plate 109 during cooling. Specifically, if the center of gravity of the unbalanced object is biased to the right, then The control rotating plate 109 is slightly deflected clockwise along the arc surface in the middle of the guide block 108, so that the amount of water entering the right side of the first connecting box 107 is relatively large, and the amount of water entering the left side is relatively small, so that the amount of water flowing into the second cooling hole 106 on the right side is relatively large, and the amount of water flowing into the second cooling hole 106 on the left side is relatively small, thereby making the cooling intensity of the right hard rail 102 relatively large, and the cooling intensity of the left hard rail 102 relatively small. On the contrary, if the center of gravity of the unbalanced object is biased to the left, the control rotating plate 109 is slightly deflected counterclockwise along the arc surface in the middle of the guide block 108, so that the cooling intensity of the left hard rail 102 is relatively large, and the cooling intensity of the right hard rail 102 is relatively small.

[0038] In summary, the base 101 and the double hard rails 102 of the present invention together form a bilateral saddle-type structure, which is matched with the linear motor 104 as a power source, and has a water cooling structure on the hard rails 102 and the slide 103, so that the linear motor 104 module can withstand a large load, controllable temperature rise, small thermal deformation, high-speed reciprocating motion and high motion accuracy.

[0039] The present invention adjusts the water inlet of the second cooling holes 106 on the left and right sides by adjusting the deflection angle of the rotating plate 109, so that most of the cooling water flows to the second cooling holes 106 on the side where the center of gravity of the unbalanced object is biased, thereby enhancing the cooling strength of the hard rail 102 on this side and weakening the cooling strength of the hard rail 102 on the other side, thereby avoiding inconsistent wear degrees of the hard rails 102 on both sides and the two sides of the slide 103, thereby avoiding imbalance of the slide 103.

[0040] The hard rail 102 of the present invention is configured as a detachable structure. Compared with the integrated structure of the base 101 and the hard rail 102 , when the end surface of the hard rail 102 is severely worn, only the hard rail 102 needs to be disassembled and replaced without replacing the base 101 , thereby reducing the use cost.

[0041] like Figure 5-Figure 8 As shown, it also includes a rotating frame 201, which is rotatably connected to the base 101, a torsion spring 202 is fixedly connected between the rotating frame 201 and the base 101, a rotating rod 203 is fixedly connected to the rear side of the rotating frame 201, a fixed cylinder 204 symmetrically distributed along the second connecting box 110 is fixedly connected in the second connecting box 110, ethyl acetate is stored in the fixed cylinder 204, a sliding cylinder 205 is slidably connected in the fixed cylinder 204 along the up and down directions, a sliding rod 206 is slidably connected in the sliding cylinder 205 along the up and down directions, and the same spring 207 is fixedly connected between the sliding rod 206 and the adjacent sliding cylinder 205, a fixed rail 208 is fixedly connected to the front side of the base 101, and the fixed rail 208 is slidably connected to the sliding frame 209 along the front and back directions, the sliding frame 209 is threadedly connected to the front end of the rotating frame 201, a movable groove is opened on the top of the sliding frame 209, and the sliding frame 209 is movably connected to the rotating plate 109 through the movable groove.

[0042] Since it is inconvenient and inaccurate to manually adjust the deflection angle of the rotating plate 109, a temperature control adjustment structure is provided so that the rotating plate 109 can automatically and accurately deflect according to the friction heating conditions on both sides. The specific operation is as follows:

[0043] Ethyl acetate is stored in the fixed cylinders 204 on both sides. The cooling water in the second cooling hole 106 absorbs friction heat in the process of flowing backward. The hot water flowing out of the rear end of the second cooling hole 106 is poured onto the outer wall of the fixed cylinder 204 on the same side, and the heat is transferred to the ethyl acetate on the inner wall of the fixed cylinder 204. The ethyl acetate expands due to the heat and pushes the sliding cylinder 205 on this side to move downward.

[0044] If the water temperature on the left and right sides is the same, the sliding cylinders 205 on the left and right sides move downward by the same distance, and the fixed cylinder 204, the sliding cylinder 205, the sliding rod 206 and the spring 207 on the same side exert the same downward pressure on the left and right sides of the rotating rod 203 as a whole, so that the rotating rod 203 does not move, the sliding rods 206 on both sides do not move, and the springs 207 on the left and right sides are stretched to the same length;

[0045] If the water temperature on one side is higher and the water temperature on the other side is lower, the sliding cylinder 205 on the side with higher water temperature will be pushed by the ethyl acetate more, and thus the sliding distance will be longer. The fixed cylinder 204, sliding cylinder 205, sliding rod 206 and spring 207 on this side as a whole exert a downward pressure on the same side of the rotating rod 203 greater than that on the other side, so that the rotating rod 203 swings unbalancedly, and the springs 207 on both sides adapt to buffer deformation. The swing of the rotating rod 203 drives the rotating frame 201 to rotate in the same direction, and the torsion spring 202 deforms, and the front of the rotating frame 201 The end pushes the sliding frame 209 to slide through the threaded groove, and the sliding frame 209 pushes the rotating plate 109 to deflect through the movable groove, so that more water flows into the second cooling hole 106 on the side with higher water temperature. When the water temperatures on both sides are cooled to the same, the torsion spring 202 is reset, so that the rotating frame 201 rotates in the opposite direction and resets, so that the rotating rod 203 swings in the opposite direction and resets, and the sliding frame 209 slides in the opposite direction and resets. The rotating rod 203 pushes the sliding cylinder 205 to slide upward and reset through the spring 207, and the sliding frame 209 drives the rotating plate 109 to rotate in the opposite direction and reset.

[0046] like Fig. 9 and Fig.10 As shown, heat dissipation pipes 301 are disposed in the two first cooling holes 105 and the two second cooling holes 106 , and the inner wall of the heat dissipation pipe 301 is provided with five protrusions extending toward the center along the circumferential direction.

[0047] The heat dissipation pipe 301 is inserted into the first cooling hole 105 and the second cooling hole 106, so that cooling water flows into the heat dissipation pipe 301 instead of the first cooling hole 105 and the second cooling hole 106. In this way, the friction heat between the slide 103 and the hard rail 102 is transferred to the heat dissipation pipe 301 through the slide 103 or the hard rail 102, and then transferred to the cooling water in the heat dissipation pipe 301. Compared with the circular hole structure of the first cooling hole 105 and the second cooling hole 106, the inner wall of the heat dissipation pipe 301 has five more protrusions extending toward the center in the circumferential direction, which increases the contact area between heat and cooling water, improves the heat transfer rate, and enhances the cooling effect.

[0048] like Fig.11 As shown, a heat dissipation tube 401 is also included. The heat dissipation tube 401 is fixedly connected to the pipeline of the second connection box 110, and a fan 402 is fixedly connected to one side of the heat dissipation tube 401 close to the tube opening.

[0049] The cooling water used to cool the hard rail 102 absorbs heat and is discharged backward into the second connection box 110. When discharged through the pipe of the second connection box 110, the heat in the water is transferred to the pipe of the second connection box 110, and the fan 402 is started. The fan 402 blows air into the heat dissipation tube 401 to dissipate heat in the pipe of the second connection box 110, so that the temperature of the discharged water is reduced for subsequent circulation cooling.

[0050] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A linear motor module with a hard rail structure and cooling, characterized in that: The invention comprises a base (101), wherein the base (101) is detachably provided with hard rails (102) symmetrically distributed along the base (101), a slide seat (103) is slidably connected between the symmetrically distributed hard rails (102), the base (101) is fixedly connected with a linear motor (104), the linear motor (104) is used to drive the slide seat (103) to slide on the hard rails (102), the slide seat (103) is provided with first cooling holes (105) symmetrically distributed along the slide seat (103), the hard rails (102) are provided with second cooling holes (106), and a first connection box (106) is fixedly connected to one side of the base (101) close to the water inlet end. 107), the first connection box (107) is communicated with the second cooling hole (106), a guide block (108) is fixedly connected in the first connection box (107), an arc surface is arranged in the middle of the guide block (108), a rotating plate (109) is rotatably connected in the first connection box (107), the rotating plate (109) is used to adjust the amount of cooling water entering the second cooling hole (106), the rotating plate (109) is in contact with the arc surface of the guide block (108), a second connection box (110) is fixedly connected to one side of the base (101) close to the water outlet, and the second connection box (110) is communicated with the second cooling hole (106).

2. A linear motor module with a hard rail structure and cooling according to claim 1, characterized in that: The invention also comprises a rotating frame (201), wherein the rotating frame (201) is rotatably connected to the base (101), a torsion spring (202) is fixedly connected between the rotating frame (201) and the base (101), a rotating rod (203) is fixedly connected to one side of the rotating frame (201) close to the second connection box (110), a fixed cylinder (204) symmetrically distributed along the second connection box (110) is fixedly connected in the second connection box (110), a thermal expansion agent is stored in the fixed cylinder (204), a sliding cylinder (205) is slidably connected in the fixed cylinder (204), and the A sliding rod (206) is slidably connected inside the sliding cylinder (205), and the same spring (207) is fixedly connected between the sliding rod (206) and the adjacent sliding cylinder (205). A fixed rail (208) is fixedly connected to the side of the base (101) close to the first connection box (107), and the fixed rail (208) is slidably connected to a sliding frame (209), and the sliding frame (209) is threadedly connected to the rotating frame (201), and the sliding frame (209) is provided with a movable groove, and the sliding frame (209) is movably connected to the rotating plate (109) through the movable groove.

3. A linear motor module with a hard rail structure and cooling according to claim 2, characterized in that: The thermal expansion agent in the fixed cylinder (204) is set to ethyl acetate.

4. A linear motor module with a hard rail structure and cooling according to claim 3, characterized in that: At least one of the first cooling holes (105) and at least one of the second cooling holes (106) has a heat dissipation pipe (301) built in.

5. A linear motor module with cooling in a hard rail structure according to claim 4, characterized in that: The inner wall of the heat dissipation pipe (301) is provided with a plurality of protrusions extending toward the center along the circumferential direction.

6. A linear motor module with cooling in a hard rail structure according to claim 5, characterized in that: It also includes a heat dissipation tube (401), and the heat dissipation tube (401) is fixedly connected to the pipeline of the second connection box (110).

7. A linear motor module with cooling in a hard rail structure according to claim 6, characterized in that: It also includes a fan (402), which is fixedly connected to a side of the heat dissipation tube (401) close to the tube opening.

8. A linear motor module with cooling in a hard rail structure according to claim 7, characterized in that: The hard rail (102) and the base (101) are connected via a plurality of bolts (501).

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