Cooling mechanism and low-speed wire cutting machine tool

Abstract

The utility model relates to the technical field of cooling equipment, and discloses a cooling mechanism and a low-speed wire cutting machine tool, the cooling mechanism comprises a cooling box, the cooling box comprises a box body and a replacement drawer, the box body is provided with a liquid inlet and a liquid outlet, and the cooling box is provided with a filter assembly, a cooling assembly and an annular water tank. According to the utility model, the filter screen is combined with the magnetic piece, so that the magnetic piece can fully adsorb magnetic metal scraps in cooling liquid, and the adsorption efficiency is improved; a pump in the annular water tank is prevented from being damaged by metal chippings, and meanwhile, the situation that follow-up operation is affected due to the fact that the recycled cooling liquid contains magnetic metal chippings is also prevented; by arranging the detection piece and the alarm piece, the blocking condition of the filter screen can be detected according to the overall weight of the filter bag, then the alarm piece is automatically triggered, power is provided for the alarm piece by utilizing the flowing force of cooling liquid, and no extra power source needs to be added; the functions of automatic energy efficiency monitoring and alarm prompting of the filtering assembly are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cooling equipment technology, specifically, to a cooling mechanism and a slow wire EDM machine tool. Background Technology

[0002] Wire EDM (Electrical Discharge Machining) is a high-precision machining tool that uses the principle of electrical discharge to cut metal. Its working principle involves applying an electrical pulse between the workpiece and the electrode using a thin copper wire electrode, generating an electrical spark. The high temperature of the spark melts and removes the metal on the workpiece surface, thus completing a fine cut. The main advantages of wire EDM are its ability to achieve high-precision, high-surface-quality cuts, making it particularly suitable for machining complex shapes and intricate details.

[0003] Cooling mechanisms play a crucial role in wire EDM machines. They improve machining quality, extend tool life, and reduce the impact of heat generated during machining on the workpiece and cutting tool. Effective cooling is essential for maintaining a stable cutting process and improving precision.

[0004] Existing cooling mechanisms used in wire EDM machines typically include a filter to filter impurities in the recycled coolant. A cooling device for a wire EDM machine, as described in publication number CN218168987U, uses a magnet to attract metal debris and a filter to remove other impurities, thus improving filtration efficiency. However, its drawbacks are: the magnet and filter are separate, resulting in low magnet adsorption efficiency for metal debris, and operators are unsure when the filter needs replacing, requiring frequent monitoring of its condition. Utility Model Content

[0005] The purpose of this invention is to provide a cooling mechanism and a slow wire EDM cutting machine tool to solve the problems of poor filtration effect and difficulty in controlling the timing of filter replacement in existing cooling mechanisms.

[0006] This utility model is achieved through the following technical solution: a cooling mechanism, including a cooling box, the cooling box including a box body and a replacement drawer, the box body being provided with a liquid inlet and a liquid outlet, and the cooling box being provided with:

[0007] A filter assembly, installed on the replacement drawer, includes a support frame, a collection hopper, a filter screen, and a support plate. The support frame is installed on the replacement drawer, the filter screen is installed on the support frame and the support plate, and a magnetic component is installed on the support plate. The collection hopper collects the filtered coolant.

[0008] A cooling assembly, mounted on the housing, includes a fan and a spiral tube. The fan is mounted on the housing, and the spiral tube is connected to the collecting hopper. The housing is provided with an air inlet and an exhaust port at the bottom.

[0009] An annular water tank, installed on the tank body, is used to store coolant, is connected to the spiral pipe, and has a built-in water pump.

[0010] To better realize this utility model, further, rubber rings are provided at both ends of the filter screen, one rubber ring is sleeved on the support frame, and the other rubber ring is sleeved on the support plate.

[0011] To better realize this utility model, the magnetic component further includes multiple adsorption plates with gaps between adjacent adsorption plates, and the adsorption plates have a porous structure.

[0012] To better realize this utility model, further, a detection element is installed on the support frame, the detection element includes a hydraulic pipe, a trigger shaft is slidably connected to the hydraulic pipe, the trigger shaft is installed on the support plate, and a fourth spring is provided between the hydraulic pipe and the support plate; the collecting hopper includes an alarm element, and the detection element is used to trigger the alarm element.

[0013] To better realize this utility model, a piston plate is further provided on the trigger shaft, a first through hole is opened on the piston plate, an adjusting member is slidably connected to the first through hole, a first spring is provided between the adjusting member and the piston plate, and a second through hole is opened on the adjusting member.

[0014] To better realize this utility model, the alarm component further includes a spiral blade, a fixed ring, and an inner shaft. The fixed ring is installed on the collecting hopper, the inner shaft is rotatably connected to the fixed ring, a sliding shaft is slidably connected to the inner shaft, a steel plate is provided on the inner shaft, a second spring is installed on the fixed ring, a steel ball is installed on the second spring, a third spring is provided between the sliding shaft and the inner shaft, and the sliding shaft cooperates with the spiral blade and the trigger shaft respectively.

[0015] A slow wire EDM machine tool, including the aforementioned cooling mechanism.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] (1) This utility model combines a filter screen with a magnetic component, which enables the magnetic component to fully adsorb magnetic metal debris in the coolant, thereby improving the adsorption efficiency; it prevents metal debris from damaging the pump in the annular water tank, and also prevents the circulating coolant from carrying magnetic metal debris, which would affect subsequent operations.

[0018] (2) By setting up detection and alarm components, this utility model can detect the clogging of the filter screen according to the overall weight of the filter bag, and then automatically trigger the alarm component. The power of the coolant flow is used to provide power for the alarm component, without the need to add an additional power source; thus realizing the function of automatic energy efficiency monitoring and alarm prompt of the filter component. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the filter component structure.

[0022] Figure 4 This is a cross-sectional view of the filter component structure.

[0023] Figure 5 This is an exploded view of the filter component structure.

[0024] Figure 6 This is a cross-sectional view of the test component.

[0025] Figure 7 Schematic diagram of the test component structure Figure 1 .

[0026] Figure 8 Schematic diagram of the test component structure Figure 2 .

[0027] Figure 9 This is a schematic diagram of the alarm component.

[0028] Wherein: 101-Box body; 102-Replacement drawer; 103-Air inlet; 104-Annular water tank; 105-Spiral tube; 106-Adsorption plate; 107-Collector; 108-Fan; 109-Support frame; 110-Spiral blade; 111-Filter screen; 112-Support plate; 113-Rubber ring; 114-Trigger shaft; 115-Hydraulic pipe; 116-Piston plate; 117-Adjusting component; 118-First spring; 119-Fixing ring; 120-Second spring; 121-Inner shaft; 122-Steel ball; 123-Sliding shaft; 124-Steel sheet; 125-Third spring; 126-Fourth spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1:

[0032] This embodiment provides a cooling mechanism, specifically as follows: Figures 1-5 As shown, the device includes a cooling box, which comprises a box body 101 and a replacement drawer 102. The replacement drawer 102 is detachably mounted on the box body 101. The box body 101 is provided with a liquid inlet and a liquid outlet. The cooling box is equipped with:

[0033] A filter assembly is installed on the replacement drawer 102. To replace the filter assembly, the replacement drawer 102 can be removed. The filter assembly includes a support frame 109, a collection hopper 107, a filter screen 111, and a support plate 112. The support frame 109 is installed on the replacement drawer 102, and the filter screen 111 is installed on the support frame 109 and the support plate 112. The filter screen 111 and the support plate 112 form a filter bag. A magnetic component is installed on the support plate 112. The collection hopper 107 collects the filtered coolant.

[0034] A cooling assembly, installed on the housing 101, includes a fan 108 and a spiral tube 105. The fan 108 is installed on the housing 101, and the spiral tube 105 is connected to the collecting hopper 107. The housing 101 is provided with an air inlet 103 and an exhaust hole at the bottom.

[0035] An annular water tank 104 is installed on the tank body 101 to store coolant, is connected to the spiral tube 105, and has a built-in water pump.

[0036] The working principle of the cooling mechanism is as follows: the coolant flows in from the inlet at the top of the housing 101 and then drips into the filter assembly. At this time, the magnetic metal debris in the coolant is attracted by the magnetic components, while the remaining impurities are blocked by the filter screen 111. Therefore, the clean coolant flows through the filter screen 111 to the collecting hopper 107, then into the spiral tube 105, and finally into the annular water tank 104, where it is pumped out to the outlet by the water pump. During this period, as the filter screen 111 is blocked by impurities, the amount of coolant accumulated in it will increase. Some of the magnetic metal debris that was not directly attracted by the magnetic components will gradually be attracted over time. The start of the fan 108 draws in air from the air inlet 103 to cool the coolant flowing in the spiral tube 105. The coolant is then discharged through the center of the annular water tank 104 and then from the exhaust port at the bottom of the housing 101.

[0037] By combining the filter screen 111 with the magnetic component, the magnetic component can fully adsorb magnetic metal debris in the coolant, thereby improving the adsorption efficiency; it also prevents the metal debris from damaging the pump in the annular water tank 104, and prevents the circulating coolant from carrying magnetic metal debris, which could affect subsequent operations.

[0038] Example 2:

[0039] This embodiment further extends the above embodiment, specifically as follows: Figures 2-5 As shown, the filter screen 111 has rubber rings 113 at both ends. One rubber ring 113 is fitted onto the support frame 109, and the other rubber ring 113 is fitted onto the support plate 112. The rubber rings 113 are elastic and can be firmly fixed onto the support frame 109 or the support plate 112. They also have a sealing function. When the filter screen 111 needs to be replaced, the rubber rings 113 can be removed manually. The support frame 109 supports the filter screen 111 to prevent it from deforming or bursting when too much coolant accumulates.

[0040] Furthermore, the magnetic component includes multiple adsorption plates 106, with gaps between adjacent adsorption plates 106, and the adsorption plates 106 have a porous structure. The adsorption plates 106 can be permanent magnets or electromagnets; by forming a porous structure with multiple adsorption plates 106 in both the transverse and longitudinal directions, the adsorption area is increased, thereby improving the adsorption efficiency of magnetic metal debris.

[0041] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0042] Example 3:

[0043] This embodiment further extends the above embodiment, specifically as follows: Figure 2 , Figure 4 , Figure 6, Figure 7 , Figure 8 , Figure 9 As shown, a detection element is installed on the support frame 109. The detection element includes a hydraulic pipe 115, and a trigger shaft 114 is slidably connected to the hydraulic pipe 115. The trigger shaft 114 is installed on the support plate 112. A fourth spring 126 is provided between the hydraulic pipe 115 and the support plate 112. The collecting hopper 107 includes an alarm element, and the detection element is used to trigger the alarm element.

[0044] Furthermore, the alarm component includes a spiral blade 110, a fixing ring 119, and an inner shaft 121. The fixing ring 119 is mounted on the collecting hopper 107. The inner shaft 121 is rotatably connected to the fixing ring 119. A sliding shaft 123 is slidably connected to the inner shaft 121. A steel plate 124 is provided on the inner shaft 121. A second spring 120 is mounted on the fixing ring 119. A steel ball 122 is mounted on the second spring 120. A third spring 125 is provided between the sliding shaft 123 and the inner shaft 121. The sliding shaft 123 cooperates with the spiral blade 110 and the trigger shaft 114 respectively.

[0045] When excessive impurities adhere to the filter screen 111, its filtration efficiency decreases, causing the coolant in the filter bag to gradually increase, thus increasing the weight of the entire filter bag. At this point, the support plate 112 begins to drive the trigger shaft 114 to overcome the elastic force of the fourth spring 126 and press down. As the trigger shaft 114 moves, when it contacts the sliding shaft 123, the sliding shaft 123 begins to overcome the elastic force of the third spring 125 and press down synchronously until the sliding shaft 123 is engaged with the shaft of the spiral blade 110. Since the filtered coolant needs to flow through the spiral blade 110, the spiral blade 110 will rotate under the push of the coolant. That is, the spiral blade 110 drives the sliding shaft 123 to rotate, and the sliding shaft 123 drives the inner shaft 121 to rotate. When the inner shaft 121 rotates, the steel plate 124 will continuously strike the steel ball 122, emitting an alarm sound to remind the staff to replace the filter assembly and prevent the coolant from overflowing in the filter bag, affecting the filtration effect. After the filter assembly is removed, the sliding shaft 123 will reset under the elastic force of the steel plate 124 and disengage from the spiral blade 110. At this time, the spiral blade 110 will still rotate, but the sliding shaft 123 will not rotate, which means the alarm is off.

[0046] This setting enables the detection of filter screen 111 blockage based on the overall weight of the filter bag, thereby automatically triggering an alarm. The alarm is powered by the force of the coolant flow, eliminating the need for an additional power source. This achieves the function of automatic energy efficiency monitoring and alarm prompts for the filter assembly.

[0047] Furthermore, a piston plate 116 is provided on the trigger shaft 114, a first through hole is opened on the piston plate 116, an adjusting member 117 is slidably connected to the first through hole, a first spring 118 is provided between the adjusting member 117 and the piston plate 116, and a second through hole is opened on the adjusting member 117.

[0048] When the trigger shaft 114 is pressed downwards, the piston plate 116 moves downwards synchronously. At this time, the hydraulic oil in the hydraulic pipe 115 below the piston plate 116 flows sequentially through the second through hole on the adjusting component 117 and the first through hole on the piston plate 116 to the area above the piston plate 116. At this time, the hydraulic oil flow cross-section is small, and the flow rate is relatively small, meaning the moving speed of the trigger shaft 114 is slow. When the trigger shaft 114 moves upwards to reset, the hydraulic oil in the hydraulic pipe 115 above the piston plate 116 flows through the first through hole on the piston plate 116 to the area below the piston plate 116. At this time, the impact force of the oil overcomes the elastic force of the first spring 118, causing the adjusting component 114 to move downwards. The sliding of component 117 provides a larger cross-sectional area for oil flow, resulting in a larger hydraulic oil flow rate and a faster movement speed of trigger shaft 114. Therefore, when the coolant in the filter bag decreases, trigger shaft 114 can quickly reset. However, when the filter bag is subjected to impact, such as when coolant has just been discharged into the filter bag or when the entire bag is impacted, the impact force is concentrated, which can easily cause a sudden increase in force on trigger shaft 114. Therefore, the small cross-section of the second through hole is used to control the flow rate of hydraulic oil as a buffer, which can effectively prevent trigger shaft 114 from accidentally triggering the alarm when the filter bag is not blocked, thus improving the accuracy of the alarm.

[0049] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0050] Example 4:

[0051] This embodiment provides a slow wire EDM cutting machine tool, using the cooling mechanism described in any of the above embodiments, and further including an operating table and a cutting section. The cooling mechanism is installed in the space at the bottom of the operating table. When the cutting section requires cooling, the water pump in the annular water tank 104 pumps coolant to the cutting section. The coolant removes heat and metal debris during cutting, ensuring smooth cutting operations. The cooled coolant after rinsing is recovered by the operating table and flows to the inlet of the cooling mechanism. After being filtered and purified by the filter assembly, it flows to the spiral tube 105 where it is cooled by the cold airflow at the fan 108, and finally returns to the annular water tank 104 for recirculation and pumping out for use. This cooling mechanism is separately designed from the cutting machine tool and can be used independently, facilitating subsequent replacement.

[0052] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A cooling mechanism, comprising a cooling tank, the cooling tank including a tank body (101) and a replacement drawer (102), the tank body (101) being provided with a liquid inlet and a liquid outlet, characterized in that, The cooling box is equipped with: The filter assembly, installed on the replacement drawer (102), includes a support frame (109), a collection hopper (107), a filter screen (111), and a support plate (112). The support frame (109) is installed on the replacement drawer (102), the filter screen (111) is installed on the support frame (109) and the support plate (112), and a magnetic component is installed on the support plate (112). The collection hopper (107) collects the filtered coolant. A cooling assembly, installed on the housing (101), includes a fan (108) and a spiral tube (105). The fan (108) is installed on the housing (101), and the spiral tube (105) is connected to the collecting hopper (107). The housing (101) is provided with an air inlet (103) and an exhaust hole at the bottom. An annular water tank (104) is installed on the tank body (101) for storing coolant, and is connected to the spiral tube (105) and has a built-in water pump.

2. The cooling mechanism according to claim 1, characterized in that: Both ends of the filter screen (111) are provided with rubber rings (113), one of the rubber rings (113) is sleeved on the support frame (109), and the other rubber ring (113) is sleeved on the support plate (112).

3. A cooling mechanism according to claim 1, characterized in that: The magnetic component includes multiple adsorption plates (106), with gaps between adjacent adsorption plates (106), and the adsorption plates (106) have a porous structure.

4. A cooling mechanism according to any one of claims 1-3, characterized in that: The support frame (109) is equipped with a detection element, which includes a hydraulic pipe (115). A trigger shaft (114) is slidably connected to the hydraulic pipe (115). The trigger shaft (114) is mounted on the support plate (112). A fourth spring (126) is provided between the hydraulic pipe (115) and the support plate (112). The collecting hopper (107) includes an alarm element, and the detection element is used to trigger the alarm element.

5. A cooling mechanism according to claim 4, characterized in that: A piston plate (116) is provided on the trigger shaft (114). A first through hole is opened on the piston plate (116). An adjusting member (117) is slidably connected to the first through hole. A first spring (118) is provided between the adjusting member (117) and the piston plate (116). A second through hole is opened on the adjusting member (117).

6. A cooling mechanism according to claim 4, characterized in that: The alarm component includes a spiral blade (110), a fixing ring (119), and an inner shaft (121). The fixing ring (119) is installed on the collecting hopper (107). The inner shaft (121) is rotatably connected to the fixing ring (119). A sliding shaft (123) is slidably connected to the inner shaft (121). A steel plate (124) is provided on the inner shaft (121). A second spring (120) is installed on the fixing ring (119). A steel ball (122) is installed on the second spring (120). A third spring (125) is provided between the sliding shaft (123) and the inner shaft (121). The sliding shaft (123) is respectively engaged with the spiral blade (110) and the trigger shaft (114).

7. A slow wire EDM machine tool, characterized in that: Use the cooling mechanism described in any one of claims 1-6.

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