High-reliability dustproof and waterproof structure of linear driving motor

Abstract

The utility model relates to a high-reliability dustproof and waterproof structure of a linear driving motor, which is characterized by comprising an outer protective layer, an inner protective layer, a left leather cavity baffle plate and a right leather cavity baffle plate, the outer protective layer is a stainless steel armor protective cover body, the inner protective layer is a leather cavity type protective cover body, and the left leather cavity baffle plate and the right leather cavity baffle plate are arranged on the outer protective layer. The inner protection layer is arranged in the outer protection layer, the rear end of the inner protection layer and the rear end of the outer protection layer are installed and connected to the front end face of the translation support, and the left side leather cavity baffle and the right side leather cavity baffle are installed on the left side and the right side of the linear driving motor in the inner protection layer respectively. According to the utility model, the double-layer protection design is adopted, and the baffles on the two sides are arranged, so that the reliability of preventing metal chips from entering a linear motor area is ensured structurally, and the effect of improving the protection capability is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear drive motor protection technical field, specifically relates to a high reliability linear drive motor dustproof and waterproof structure. BACKGROUND

[0002] With the continuous development of machine tool industry, the market demand for machine tools is also higher and higher, and it requires higher efficiency, higher precision and longer time high-precision maintaining ability. Therefore, the application of linear motor is more and more widely, as a kind of direct drive mode, linear motor has no intermediate transmission mechanism, so that linear motor has faster speed, acceleration and dynamic response. But in the working process of linear motor, a lot of heat will be generated, these heat will not only affect the performance of linear motor itself, but also cause other components to be deformed, thereby affecting the overall precision of machine tool. In addition, although there is no transmission mechanism in the linear motor, the gap between the coil and the magnetic plate of the linear motor is very small, so it is necessary to avoid the cutting chips, cutting fluid and other sundries into the gap during processing, which will cause the damage of the motor.

[0003] Linear motor is widely used in the field of machining center due to its high speed, silence and zero reverse gap, but due to its own mechanical particularity, such as strong magnetism, it puts forward higher requirements for the protection of the motor itself, therefore, the dustproof and waterproof design of linear motor of machining center usually has the following difficulties:

[0004] 1. The magnetic plate of linear motor has strong magnetism, and the maximum static attraction force reaches 3 tons. At this time, during installation or use of machine tool, it is necessary to ensure that no metal enters the moving area of linear motor.

[0005] 2. There is a certain gap between the magnetic plate of linear motor and the motor coil, so there is a space area, which is easy to cause negative pressure when the motor moves at high speed, and the design needs to reserve air channel with the outside, which brings great difficulty to sealing and dustproof.

[0006] 3. The linear motor itself generates heat when moving at high speed, and the heat dissipation needs to be considered repeatedly when designing the dustproof and waterproof structure, which also brings difficulty to the reliability of sealing.

[0007] 4. Linear motor itself is very sensitive to the friction force of the moving part, so the mechanism needs to have small friction force while having sealing property.

[0008] Therefore, in order to solve the above problems, a high reliability linear drive motor dustproof and waterproof structure is designed to avoid the damage of the motor. SUMMARY

[0009] The utility model discloses a high reliability linear drive motor dustproof and waterproof structure designs a kind of to solve above-mentioned problem, by adopting the design of double-layer protection, plus the baffle of both sides, on structure ensure the reliability of preventing metal chip into linear motor area, play the role of improving protection ability.

[0010] To solve the above technical problems, the utility model provides a high reliability linear drive motor dustproof and waterproof structure, it is characterized by including outer protective layer, internal protective layer, left side skin cavity baffle and right side skin cavity baffle, the outer protective layer is stainless steel cuirass protective cover body, the internal protective layer is skin cavity type protective cover body, the internal protective layer is arranged in the outer protective layer, and the rear end of internal protective layer and outer protective layer is respectively installed and connected on the front end surface of translation support, the translation support is connected with linear drive motor and is driven along guide rail to slide, and the front end of linear drive motor extends into internal protective layer, and the left side and right side of linear drive motor in internal protective layer are respectively provided with left side skin cavity baffle and right side skin cavity baffle, and there is gap between the left end surface in internal protective layer of left side skin cavity baffle and the right end surface in internal protective layer of right side skin cavity baffle, and the left end and right end of internal protective layer form first air outlet with left side skin cavity baffle and right side skin cavity baffle.

[0011] Further: the front end of the outer protective layer is fixed on the upper baffle, the front end of the internal protective layer is fixed on the lower baffle, the upper baffle and the lower baffle are designed in a staggered structure and form a second air inlet between each other.

[0012] Still further: the rear side of the translation support is provided with a rear baffle, and the rear end of the translation support is provided with a staggered baffle, the staggered baffle is in a U shape, and the lower side of the staggered baffle is provided with a gap with the rear baffle and forms a second air outlet between each other, and the upper edge of the staggered baffle is longer than the lower edge.

[0013] Still further: the linear drive motor comprises a motor and a linear motor magnetic plate, the machine tool mounting surface is provided with a plurality of linear motor magnetic plates from front to back, the motor is composed of a linear motor coil mounting plate and a linear motor coil, the linear motor coil is connected to the translation support through the linear motor coil mounting plate and located directly above the linear motor magnetic plate, and the gap between the linear motor coil and the linear motor magnetic plate is protected by the outer protective layer and the internal protective layer.

[0014] Still further: the position of the linear motor magnetic plate on the machine tool mounting surface is in the form of a left inclined surface, and a flow guide groove is formed in the left side of the machine tool mounting surface, and the flow guide groove is located directly below the left side skin cavity baffle.

[0015] Further: two cooling liquid pipes are distributed in the machine tool mounting surface below the magnetic plate of the linear motor.

[0016] After the above structure, the beneficial effects of the present application are as follows:

[0017] 1. The double-layer protection design of the present application, combined with the baffle on both sides, ensures the reliability of preventing metal chips from entering the linear motor area in structure, and improves the protection ability.

[0018] 2. In order to ensure that the internal space of the linear motor has enough space to circulate with the external air to prevent negative pressure, the baffle design of staggered layers at both ends ensures the size of the inlet and outlet air passage, realizes the effect of air cooling, and effectively prevents the entry of metal chips.

[0019] 3. In the present application, the upper layer is protected by stainless steel armor, which can ensure that the heat generated during metal processing does not enter the linear motor area, and the lower layer is a skin cavity type to prevent the cutting fluid from entering the linear motor area. Both types of protection have the characteristics of small friction. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0021] Figure 1 It is a three-dimensional internal structure diagram of the present application.

[0022] Figure 2 It is a front view of the internal structure of the present application.

[0023] Figure 3 It is Figure 2 the enlarged view of A.

[0024] Figure 4 It is Figure 2 the enlarged view of B.

[0025] Figure 5 It is a side view of the internal structure of the present application.

[0026] Figure 6 It is Figure 5 the enlarged view of C.

[0027] Figure 7 It is Figure 5 the enlarged view of D.

[0028] In the figure: 1 is the outer protective layer, 2 is the internal protective layer, 3 is the motor, 3-1 is the linear motor coil mounting plate, 3-2 is the linear motor coil, 4 is the linear motor magnetic plate, 6 is the rear baffle, 7 is the staggered baffle, 8 is the upper baffle, 9 is the lower baffle, 10 is the cooling liquid pipe, 11 is the left skin cavity baffle, 12 is the flow guide groove, 13 is the right skin cavity baffle, 14 is the translation bracket, 15 is the guide rail. DETAILED DESCRIPTION

[0029] As Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 indicated, a high-reliability linear drive motor dustproof and waterproof structure includes an outer protective layer 1, an internal protective layer 2, a left skin cavity baffle 11 and a right skin cavity baffle 13, the outer protective layer is a stainless steel armor protective cover body, the internal protective layer is a skin cavity type protective cover body, the internal protective layer is arranged in the outer protective layer, the rear ends of the internal protective layer and the outer protective layer are respectively mounted and connected on the front end face of the translation bracket 14, the translation bracket is connected with the linear drive motor and translates and slides along the guide rail 15 through the driving of the linear drive motor, the front end of the linear drive motor extends into the internal protective layer, the left and right sides of the linear drive motor in the internal protective layer are respectively provided with the left skin cavity baffle and the right skin cavity baffle, gaps are left between the left end face of the internal protective layer and the left skin cavity baffle and between the right end face of the internal protective layer and the right skin cavity baffle, and the left and right ends of the internal protective layer and the left and right skin cavity baffles form first air outlet openings. The double-layer protective design of the utility model, together with the baffles on both sides, ensures the reliability of preventing metal chips from entering the linear motor area in structure, improves the protection capability. Moreover, the upper layer in the utility model is protected by the stainless steel armor, can ensure that heat generated during metal processing is not transmitted to the linear motor area, the lower layer is of the skin cavity type, prevents cutting fluid leakage from entering the linear motor area, and both forms of protection have the characteristics of small friction.

[0030] As Figure 2 , Figure 3 and Figure 4The front end of the outer protective layer is fixed on the upper baffle 8, the front end of the inner protective layer is fixed on the lower baffle 9, the upper baffle and the lower baffle are designed in a staggered structure and form a second air inlet between each other, the rear baffle 6 is fixed on the machine tool mounting surface at the rear side of the translation bracket, the staggered baffle 7 is installed on the rear end surface of the translation bracket, the staggered baffle 7 is in a U shape, a gap is formed between the lower side of the staggered baffle and the rear baffle and forms a second air outlet between each other, and the upper edge of the staggered baffle is longer than the lower edge thereof.

[0031] As shown in Figure 5 , Figure 6 and Figure 7 , the linear drive motor comprises a motor 3 and a linear motor magnetic plate 4, a plurality of linear motor magnetic plates are sequentially installed on the machine tool mounting surface from front to back, the motor is composed of a linear motor coil mounting plate 3-1 and a linear motor coil 3-2, the linear motor coil is connected to the translation bracket through the linear motor coil mounting plate and is located directly above the linear motor magnetic plate, and the gap between the linear motor coil and the linear motor magnetic plate is protected by the outer protective layer and the inner protective layer; the position of the linear motor magnetic plate installed on the machine tool mounting surface is in a left inclined surface shape, a flow guide groove 12 is formed in the machine tool mounting surface at the left side of the linear motor magnetic plate, and the flow guide groove is located directly below the left side skin cavity baffle; two cooling liquid pipes 10 are distributed in the machine tool mounting surface below the linear motor magnetic plate.

[0032] When the machine tool is cutting, the outer protective layer 1 can protect most of the chips from entering the interior, and a small part of the chips may still rebound into the interior from the side and other small gaps, at which time the inner protective layer, the left side skin cavity baffle and the right side skin cavity baffle can effectively protect and ensure that no chips can enter the linear motor area. In addition, the installation surface of the linear motor magnetic plate is also treated in an elevated manner while ensuring rigidity, and a flow guide groove is also left on the side to ensure that the cutting fluid will not damage the motor. In addition, two cooling liquid pipes 9 are distributed below the linear motor magnetic plate, and a cooling liquid pipe is also distributed in the linear motor coil mounting plate 8, the constant temperature cooling liquid in the pipe cools the linear motor, which ensures the performance of the linear motor itself and effectively prevents the heat generated by the linear motor during operation from affecting the overall performance of the machine tool.

[0033] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application are deemed to be within the protection scope of the present application.

Claims

1. A highly reliable dustproof and waterproof structure for a linear drive motor, characterized by: The invention comprises an outer protective layer (1), an inner protective layer (2), a left-side leather cavity baffle (11) and a right-side leather cavity baffle (13), wherein the outer protective layer is a stainless steel armor protective cover body, the inner protective layer is a leather cavity type protective cover body, the inner protective layer is arranged inside the outer protective layer, the rear ends of the inner protective layer and the outer protective layer are respectively installed and connected to the front end surface of the translation bracket (14), the translation bracket is connected to the linear drive motor and slides along the guide rail (15) through the drive thereof, the front end of the linear drive motor extends into the inner protective layer, the left-side leather cavity baffle and the right-side leather cavity baffle are respectively installed on the left and right sides of the linear drive motor in the inner protective layer, a gap is left between the left-side leather cavity baffle and the left end surface of the inner protective layer, and a gap is left between the right-side leather cavity baffle and the right end surface of the inner protective layer, and a first air outlet is formed between the left and right ends of the inner protective layer and the left and right leather cavity baffles.

2. The high-reliability dustproof and waterproof structure of a linear drive motor according to claim 1, characterized in that: The front end of the outer protective layer is fixed on the upper baffle (8), and the front end of the inner protective layer is fixed on the lower baffle (9). The upper baffle and the lower baffle are designed with a staggered structure and form a second air inlet between them.

3. The high-reliability dustproof and waterproof structure of a linear drive motor according to claim 1, characterized in that: A rear baffle (6) is fixed on the machine tool mounting surface at the rear side of the translation bracket, and a staggered baffle (7) is installed on the rear end surface of the translation bracket. The staggered baffle (7) is U-shaped, with a gap between its lower side and the rear baffle and forming a second air outlet between them, and the upper edge of the staggered baffle is longer than its lower edge.

4. The high-reliability dustproof and waterproof structure of a linear drive motor according to claim 3, characterized in that: The linear drive motor comprises a motor (3) and a linear motor magnetic plate (4); a plurality of linear motor magnetic plates are sequentially mounted on the machine tool mounting surface from front to back; the motor comprises a linear motor coil mounting plate (3-1) and a linear motor coil (3-2); the linear motor coil is connected to a translation bracket via the linear motor coil mounting plate and is located directly above the linear motor magnetic plate; and a gap between the linear motor coil and the linear motor magnetic plate is protected by an outer protective layer and an inner protective layer.

5. The high-reliability dust-proof and waterproof structure of a linear drive motor according to claim 4, characterized in that: The position where the linear motor magnetic plate is installed on the machine tool installation surface is in the shape of a left-facing slope, and a guide groove (12) is provided on the machine tool installation surface on the left side of the linear motor magnetic plate, and the guide groove is located directly below the left bellows baffle.

6. The high-reliability dustproof and waterproof structure of a linear drive motor according to claim 4, characterized in that: Two cooling liquid pipes (10) are distributed in the machine tool installation surface below the linear motor magnetic plate.

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