A hard rail structure with a cooling linear motor module

Abstract

The present invention discloses a hard rail structure with a cooling linear motor module, which relates to the technical field of cooling. It includes a base, and the base is detachably provided with the hard rails symmetrically distributed along the base. A sliding seat is slidably connected between the symmetrically distributed hard rails. The base is fixedly connected with the linear motor, and the linear motor is used to drive the sliding seat to slide on the hard rails. The sliding seat is provided with first cooling holes symmetrically distributed along the sliding seat, and second cooling holes are opened in the hard rails. One side of the base close to the water inlet end is fixedly communicated with a first connection box. The base and the double hard rails of the present invention jointly form a bilateral saddle structure, with the linear motor as the power source and water cooling structures on both the hard rails and the sliding seat, so that the linear motor module of the present invention can bear a large load, the temperature rise is controllable, the thermal deformation is small, and it can perform high-speed reciprocating motion with high motion accuracy.

Description

Technical Field

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

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

[0003] However, the traditional hard rail structure adopts an integrated design of a fixed hard rail and a base, and uses a saddle structure to cooperate with a lead screw to enable a slider or a slide seat to perform linear motion. Since the heat generated by friction and current loss is difficult to effectively dissipate, the temperature rise is too high. Due to the lack of effective cooling measures, the guide rail and the slide seat will undergo different degrees of thermal expansion after long-term operation, resulting in an increase in the deviation of the motion trajectory and affecting the overall performance. Especially in high-precision applications, even a tiny thermal deformation may cause serious consequences, which not only affects the motor efficiency, but also causes thermal deformation of the guide rail and the slide seat, reducing the motion accuracy. In addition, although the traditional hard rail structure has high rigidity and stability, it is prone to accuracy decline due to wear during long-term operation, resulting in a relatively high usage cost.

[0004] Therefore, the present invention proposes a linear motor module with a cooling hard rail structure. Summary of the Invention

[0005] In order to overcome the drawbacks proposed in the above background art, the present invention provides a linear motor module with a cooling hard rail structure.

[0006] A linear motor module with a cooling hard rail structure 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 with the linear motor, and the linear motor is used to drive the slide seat to slide on the hard rails. The slide seat is provided with first cooling holes symmetrically distributed along the slide seat. Second cooling holes are opened in the hard rails. One side of the base close to the water inlet end is fixedly communicated with a first connection box, and the first connection box is communicated with the second cooling holes. A flow guiding block is fixedly connected in the first connection box, and an arc surface is arranged in the middle of the flow guiding block. A rotating plate is rotatably connected in the first connection box, and the rotating plate is used to regulate the amount of cooling water entering the second cooling holes. The rotating plate contacts the arc surface of the flow guiding block. One side of the base close to the water outlet end is fixedly communicated with a second connection box, and the second connection box is communicated with the second cooling holes.

[0007] More preferably, it further includes a rotating frame, the rotating frame is rotatably connected to the base, a torsion spring is fixedly connected between the rotating frame and the base, a rotating rod is fixedly connected to one side of the rotating frame close to the second connection box, and fixing cylinders symmetrically distributed along the second connection box are fixedly connected inside the second connection box. A thermal expansion agent is stored in the fixing cylinder, a sliding cylinder is slidably connected inside the fixing cylinder, a sliding rod is slidably connected inside the sliding cylinder, and the same spring is fixedly connected between the sliding rod and the adjacent sliding cylinder. A fixing rail is fixedly connected to one side of the base close to the first connection box, a sliding frame is slidably connected to the fixing rail, the sliding frame is threadedly connected to the rotating frame, an activity groove is formed in the sliding frame, and the sliding frame is movably connected to the rotating plate through the activity groove.

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

[0009] More preferably, at least one of the first cooling holes and at least one of the second cooling holes are internally provided with heat dissipation tubes.

[0010] More preferably, a plurality of protrusions extending towards the center are circumferentially arranged on the inner wall of the heat dissipation tube.

[0011] More preferably, it further includes a heat dissipation cylinder, and the heat dissipation cylinder is fixedly connected to the pipeline of the second connection box.

[0012] More preferably, it further includes a fan, and the fan is fixedly connected to one side of the heat dissipation cylinder close to the cylinder opening.

[0013] More preferably, the hard rail and the base are connected by 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 jointly form a bilateral saddle structure, with a linear motor as the power source, and water cooling structures are provided on both the hard rail and the slide seat, so that the linear motor module can bear a large load, the temperature rise is controllable, the thermal deformation is small, and it can perform high-speed reciprocating motion with high motion accuracy.

[0015] By adjusting the deflection angle of the rotating plate, the present invention controls the water inflow of the second cooling holes on the left and right sides, 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 deviates, enhancing the cooling intensity of the hard rail on this side, while weakening the cooling intensity of the hard rail on the other side, avoiding inconsistent wear degrees on both sides of the hard rail and the slide seat, and thus avoiding the imbalance of the slide seat.

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

[0017] The present invention constitutes a temperature control and adjustment structure by setting components such as a rotating frame and a torsion spring rotating rod, enabling the rotating plate to automatically and precisely deflect according to the frictional heat generation conditions on both sides.

[0018] The present invention inserts heat dissipation tubes into the first cooling hole and the second cooling hole, 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, causing the fan to blow air into the heat dissipation cylinder to dissipate heat from the pipes of the second connection box, reducing the temperature of the discharged water for subsequent circulating cooling. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 is a three-dimensional structure schematic diagram of components such as the first connection box and the diversion block of the present invention.

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

[0024] Figure 5 is a three-dimensional structure schematic diagram of components such as the torsion spring, the rotating rod, and the fixed cylinder of the present invention.

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

[0026] Figure 7 is a three-dimensional structure schematic diagram of components such as the first connection box, the fixed rail, and the sliding frame of the present invention.

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

[0028] Figure 9 is a three-dimensional structure schematic diagram of components such as the hard rail, the sliding seat, and the heat dissipation tube of the present invention.

[0029] Figure 10 is a three-dimensional structure schematic diagram of the heat dissipation tube of the present invention.

[0030] Figure 11 is a three-dimensional structure schematic diagram of components such as the base and the second connection box of the present invention.

[0031] Figure 12 is a three-dimensional structure schematic diagram of components such as the base, the heat dissipation cylinder, and the fan of the present invention.

[0032] Figure 13 This is a three-dimensional structural schematic diagram of components such as the base, hard rail, and bolt of the present invention.

[0033] Among them, the above-mentioned drawings include the following reference numerals: 101, base; 102, hard rail; 103, slide; 104, linear motor; 105, first cooling hole; 106, second cooling hole; 107, first connection box; 108, flow guide block; 109, rotating plate; 110, second connection 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 implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: A hard rail structure with a cooling linear motor module, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and 13 , includes a base 101. The base 101 is connected with hard rails 102 symmetrically distributed left and right along the base 101 through a plurality of bolts 501. When installing the hard rails 102, tighten the bolts 501 to fix the hard rails 102 on the base 101. When disassembling and replacing the hard rails 102, loosen the bolts 501 and remove the hard rails 102. A slide 103 is slidably connected between the left and right symmetrically distributed hard rails 102 in the front-rear direction. A linear motor 104 is fixedly connected to the middle of the base 101. The linear motor 104 is used to drive the slide 103 to slide back and forth on the hard rails 102. The slide 103 is provided with first cooling holes 105 symmetrically distributed left and right along the slide 103. The number of the first cooling holes 105 is four. Second cooling holes 106 are opened in the hard rails 102. A first connection box 107 is fixedly connected to the front side of the base 101. The first connection box 107 is communicated with the second cooling holes 106. A flow guide block 108 is fixedly connected in the first connection box 107. An arc surface is arranged in the middle of the flow guide block 108. A rotating plate 109 is rotatably connected in the first connection box 107. The rotating plate 109 is used to regulate the amount of cooling water entering the second cooling holes 106. The rotating plate 109 contacts the arc surface of the flow guide block 108. A second connection box 110 is fixedly connected to the rear side of the base 101. The second connection box 110 is communicated with the second cooling holes 106.

[0036] This is a hard rail structure with a cooled linear motor module. The base 101 and the double hard rails 102 together form a bilateral 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. 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 the 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 frictional 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 frictional 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 regulated 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 more, and the amount of water entering the left side is relatively less, thereby causing the amount of water flowing into the second cooling hole 106 on the right to be relatively more, and the amount of water flowing into the second cooling hole 106 on the left to be relatively less, thereby causing the cooling intensity of the right hard rail 102 to be relatively large, and the cooling intensity of the left hard rail 102 to be 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 the power source, and both the hard rail 102 and the slide 103 are provided with a water-cooling structure, so that the linear motor 104 module can withstand a large load, the temperature rise is controllable, the thermal deformation is small, and it can move back and forth at high speed with high motion accuracy.

[0039] The present invention regulates the water inlet amount 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 intensity of the hard rail 102 on this side and weakening the cooling intensity of the hard rail 102 on the other side, avoiding inconsistent wear degrees on the hard rails 102 on both sides and the two sides of the slide 103, thereby preventing the slide 103 from unbalancing.

[0040] The hard rail 102 of the present invention is provided as a detachable structure. Compared with the integral structure of the base 101 and the hard rail 102, when the end face of the hard rail 102 is severely worn, only the hard rail 102 needs to be disassembled and replaced, and there is no need to replace the base 101, reducing the use cost.

[0041] As Figures 5 - 8 shown, it further includes a rotating frame 201. 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 the rear side of the rotating frame 201. Fixed cylinders 204 symmetrically distributed along the left and right of the second connection box 110 are fixedly connected inside the second connection box 110. Ethyl acetate is stored in the fixed cylinders 204. A sliding cylinder 205 is slidably connected in the fixed cylinder 204 in the up and down direction. A sliding rod 206 is slidably connected in the sliding cylinder 205 in the up and down direction. 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. A sliding frame 209 is slidably connected to the fixed rail 208 in the front and rear direction. The sliding frame 209 is threadedly connected to the front end of the rotating frame 201. An activity groove is opened at the top of the sliding frame 209. The sliding frame 209 is movably connected to the rotating plate 109 through the activity 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 heat generation conditions on both sides. The specific operation is as follows:

[0043] Ethyl acetate is stored in the fixed cylinders 204 on both the left and right sides. The cooling water in the second cooling hole 106 will absorb the frictional heat during the process of flowing backward. The hot water flowing out from the rear end of the second cooling hole 106 will be poured onto the outer wall of the fixed cylinder 204 on the same side. The heat is transferred to the ethyl acetate on the inner wall of the fixed cylinder 204. The ethyl acetate expands due to heat and pushes the sliding cylinder 205 on that side to move downward;

[0044] If the water temperatures on both the left and right sides are the same, the sliding cylinders 205 on both the left and right sides will move downward by the same distance. The fixed cylinder 204, the sliding cylinder 205, the sliding rod 206, and the spring 207 on the same side act as a whole to apply the same downward pressure on both sides of the rotating rod 203. Therefore, the rotating rod 203 does not move, and the sliding rods 206 on both sides also do not move. The springs 207 on both the left and right sides are stretched by 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 the higher water temperature is pushed more strongly by ethyl acetate, so it moves downward a longer distance. As a whole, the fixed cylinder 204, sliding cylinder 205, sliding rod 206, and spring 207 on this side exert a greater downward pressure on the same side of the rotating rod 203 than on the other side. Therefore, the rotating rod 203 swings out of balance, and the springs 207 on both sides undergo adaptive buffer deformation. The swinging of the rotating rod 203 drives the rotating frame 201 to rotate in the same direction, the torsion spring 202 deforms, the front end of the rotating frame 201 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 the higher water temperature. When the water temperatures on both sides are cooled to the same, the torsion spring 202 resets, causing the rotating frame 201 to rotate in the reverse direction and reset, the rotating rod 203 to swing in the reverse direction and reset, and the sliding frame 209 to slide in the reverse direction and reset. The rotating rod 203 pushes the sliding cylinder 205 to slide upward and reset through the spring 207, and the sliding frame 209 toggles the rotating plate 109 to rotate in the reverse direction and reset.

[0046] As Figure 9 and Figure 10 shown, heat dissipation tubes 301 are arranged in both of the two first cooling holes 105 and the two second cooling holes 106, and five protrusions extending towards the center are arranged along the circumferential direction of the inner wall of the heat dissipation tube 301.

[0047] By arranging the heat dissipation tubes 301 in the first cooling holes 105 and the second cooling holes 106, cooling water is made to flow into the heat dissipation tubes 301 instead of the first cooling holes 105 and the second cooling holes 106. In this way, the frictional heat between the sliding seat 103 and the hard rail 102 is transferred to the heat dissipation tube 301 through the sliding seat 103 or the hard rail 102, and then to the cooling water in the heat dissipation tube 301. Compared with the round hole structure of the first cooling holes 105 and the second cooling holes 106, there are five more protrusions extending towards the center along the circumferential direction of the inner wall of the heat dissipation tube 301, which increases the contact area between the heat and the cooling water, improves the heat transfer rate, and enhances the cooling effect.

[0048] As Figure 11 shown, it further includes a heat dissipation cylinder 401. The heat dissipation cylinder 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 cylinder 401 close to the cylinder mouth.

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

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

Claims

1. A hard rail structure with a cooling linear motor module, characterized in that, It includes a base (101). The base (101) is detachably provided with hard rails (102) symmetrically distributed along the base (101). A sliding seat (103) is slidably connected between the symmetrically distributed hard rails (102). The base (101) is fixedly connected with a linear motor (104), and the linear motor (104) is used to drive the sliding seat (103) to slide on the hard rails (102). The sliding seat (103) is provided with first cooling holes (105) symmetrically distributed along the sliding seat (103). Second cooling holes (106) are formed in the hard rails (102). One side of the base (101) close to the water inlet end is fixedly communicated with a first connection box (107), and the first connection box (107) is communicated with the second cooling holes (106). A flow guiding block (108) is fixedly connected in the first connection box (107). The middle of the flow guiding block (108) is provided with an arc surface. A rotating plate (109) is rotatably connected in the first connection box (107), and the rotating plate (109) is used to regulate the amount of cooling water entering the second cooling holes (106). The rotating plate (109) contacts the arc surface of the flow guiding block (108). One side of the base (101) close to the water outlet end is fixedly communicated with a second connection box (110), and the second connection box (110) is communicated with the second cooling holes (106).

2. The hard rail structure with a cooling linear motor module according to claim 1, wherein, It further includes a rotating frame (201). The rotating frame (201) is rotatably connected with 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). Fixed cylinders (204) symmetrically distributed along the second connection box (110) are fixedly connected in the second connection box (110). A thermal expansion agent is stored in the fixed cylinders (204). A sliding cylinder (205) is slidably connected in the fixed cylinders (204). A sliding rod (206) is slidably connected in the sliding cylinder (205). The same springs (207) are fixedly connected between the sliding rod (206) and the adjacent sliding cylinders (205). A fixed rail (208) is fixedly connected to one side of the base (101) close to the first connection box (107). A sliding frame (209) is slidably connected to the fixed rail (208). The sliding frame (209) is threadedly connected with the rotating frame (201). The sliding frame (209) is provided with an activity groove, and the sliding frame (209) is movably connected with the rotating plate (109) through the activity groove.

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

4. A hard rail structure with a cooling linear motor module 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) are internally provided with heat dissipation tubes (301).

5. A hard rail structure with a cooling linear motor module according to claim 4, characterized in that, A plurality of protrusions extending towards the center are circumferentially arranged on the inner wall of the heat dissipation tube (301).

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

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

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

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