Guide rail assembly for cutting equipment

Abstract

The invention relates to the field of cutting equipment, in particular to a guide rail assembly for cutting equipment, which structurally comprises a composite beam rail and a sliding seat for mounting a cutting machine head, a sliding rail part is arranged on the composite beam rail, two sides of the sliding seat are clamped with the sliding rail part through sliding blocks, and the sliding seat is provided with an end cleaning mechanism at the end part of the sliding blocks and is in contact with the sliding rail part. The end cleaning mechanism comprises a ventilation seat and a partition card arranged on the ventilation seat, an air supply channel and an air exhaust channel are arranged in the ventilation seat, and the air supply channel forms an air outlet cavity and an air exhaust cavity on the ventilation seat. Dust on a main contact surface is scraped through the partition cards, a treatment space is partitioned between the partition cards, dust on the contact surface on the inner sides of the partition cards and in an area close to the periphery of the sliding rail part is driven by airflow to be separated from the contact surface, and directional collection is performed by negative pressure, so that the contact surface of the sliding rail part on a sliding block movement path is clean and tidy.

Description

Technical Field

[0001] The present invention relates to the field of cutting equipment, in particular to a guide rail assembly for cutting equipment. Background Art

[0002] A cutting machine is a device commonly used for flush cutting in sheet metal processing. The cutting head on the guide rail moves on the sheet metal to cut the sheet metal. Existing cutting machines use various types of slide rails, including pulleys that are less affected by the environment but have lower precision, linear guides that have higher precision but are affected by the environment, and slide rails that slide by fitting the contact surface to better adapt to the load environment.

[0003] Existing cutting machines usually use two guide rails. Since the cutting head needs to extend sideways and downward for cutting, there is only one guide rail to mainly support the cutting head, which easily causes uneven force on the two slide rails. In this form of contact surface sliding, the gap between the slider and the slide rail will expand in different usage scenarios. For example, when cutting a plate with higher hardness, the cutting vibration is large, resulting in a gap between the slider and the slide rail. The dust generated by the cutting accumulates on the slide rail and is usually pushed away by the slider. However, when the gap expands, it is easy for the dust to enter between the slider and the slide rail, affecting the fit between the slider and the slide rail and increasing wear. Summary of the Invention

[0004] In view of the above problems, the present invention provides a guide rail assembly for cutting equipment, which structure includes a composite beam rail and a slide seat slidably mounted on the composite beam rail, the composite beam rail is provided with a slide rail portion and two thereof are provided at the same horizontal height, sliders are provided on both sides of the slide seat, the slide seat is movably mounted between the slide rail portions through the sliders on both sides and the slide rail portion, the slide seat is provided with an end-clearing mechanism at the end of the slider and contacts the slide rail portion; the slide rail portion has two contact surfaces and forms a convex shape, the slider includes two contact surfaces and forms a concave shape and fits with the contact surface of the slide rail portion; the end-clearing mechanism includes a vent seat and a The spacer on the vent seat comprises a plurality of card seat parts and the plurality of card seat parts are arranged in a staggered manner. The spacer is provided with a plurality of cards and is arranged on the card seat part and against the contact surface of the slide rail part. The spacer is provided with at least one card on each of the two contact surfaces of the slide rail part and is arranged adjacent to each other. An air supply channel and an air exhaust channel are provided in the vent seat. A single card seat part has a concave portion and a convex portion and respectively points to different contact surfaces of the slide rail part. The concave portion and the convex portion are staggered on a single contact surface. The air supply channel forms an air outlet cavity on the concave portion and the air exhaust channel forms an air exhaust cavity on the convex portion. The spacer is installed on the air outlet cavity.

[0005] Furthermore, limiting edges are provided on both sides of the air outlet cavity, and the air outlet cavity is provided with an opening at the end of the card seat portion. Displacement grooves are provided on both sides of the top of the spacer card and are inserted into the limiting edges. A first elastic member is provided on the top of the spacer card to abut against the inner side of the air outlet cavity, and the first elastic member provides elastic force to drive the spacer card to move toward the contact surface of the slide rail portion.

[0006] Furthermore, the spacers are arranged at intervals on the contact surface on the same side of the slide rail portion and are in contact with the spacers on the contact surface on the opposite side. There is a gap between the convex portion and the contact surface of the slide rail portion, and the vacuum chamber forms a negative pressure space on the contact surface of the slide rail portion through adjacent spacers or between the spacers and the slide seat; the direct outlet of the air outlet chamber equipped with the spacers, which was originally formed on the recessed portion, is blocked by the spacers, and the vacuum chamber opens as the direct outlet of the air outlet chamber is blocked.

[0007] Furthermore, a partition cavity is provided in the middle part of the air extraction cavity along the length direction of the limiting edge of the card seat part, and a block is provided in the partition cavity through a second elastic member to separate the air extraction channel and the direct outlet of the air extraction cavity formed on the convex part; a protruding conducting part is provided on the end of the partition card close to the convex part, and the conducting part of the partition card installed in the air outlet cavity is embedded in the partition cavity, and a conducting groove is provided in the conducting part for connecting the air extraction cavity.

[0008] Furthermore, an air replenishing cavity is provided on one end of the partition card close to the convex portion, and the air replenishing cavity is connected from the top end of the partition card to the bottom end of the partition card and points to between the air extraction cavity and the slide rail portion. The air replenishing cavity serves as an indirect outlet of the air outlet cavity formed on the concave portion.

[0009] Furthermore, the air outlet cavity without the spacer card forms a positive pressure space outside the spacer card of the previous air outlet cavity, and there are at least two air outlet cavities outside the vent seat without the spacer card. The air outlet cavity without the spacer card forms a negative pressure and positive pressure cycle with the previous vacuum cavity.

[0010] Furthermore, the lengths of the air outlet cavity and the air pumping cavity are greater than the width of the contact surface of the slide rail portion, and both ends of the air outlet cavity and the air pumping cavity are located outside the contact surface in projections on the plane where the contact surface is located.

[0011] Furthermore, an included angle is formed between the two contact surfaces of the slide rail portion, and the included angle range is within 60°-120°.

[0012] Furthermore, the distance between the limiting edge and the contact surface of the slide rail portion is smaller than the distance from the top of the spacer card's clearance groove to the bottom of the spacer card, and a structural column is provided on the limiting edge at the opening at the end of the card seat portion, and the structural column is used to limit the freedom of the spacer card to move toward the outside of the opening.

[0013] Furthermore, the slide seat is fixedly provided with a fixed block and a detachable movable block, the slider is mounted on the fixed block and the movable block, and an adjustment block is provided between the movable block and the fixed block for adjusting the distance between the movable block and the fixed block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention cleans the rail portion of the composite beam rail following the sliding seat through an end cleaning mechanism, and scrapes the rail portion having two contact surfaces and forming a convex shape by cross-arranging spacers on the vent seat, and performs two processing methods on the contact surface. One is that the spacer scrapes the dust on the main contact surface to prevent the dust from entering the bottom of the slider from the contact surface of the rail portion on the movement path of the slider, and separates a processing space between the spacers. The second is that the airflow drives the dust on the contact surface inside the spacer and the dust in the vicinity of the rail portion to separate from the contact surface, and the negative pressure is used for direction collection, thereby ensuring that the contact surface of the rail portion on the movement path of the slider is clean, and avoiding the dust on the contact surface of the rail portion from entering the gap when multiple gaps between the slider and the rail portion are expanded due to long-term vibration.

[0015] Not only that, the present invention also provides a processing method for the contact surface. By setting up a part of the outer area of ​​the ventilation seat without installing the partition card, the outer air outlet cavity can spray air to drive the dust on the outer contact surface of the ventilation seat and the dust in the nearby area around the slide rail part to move, and carry out direction collection through the outer exhaust cavity, while blowing some dust away, thereby ensuring that the front and rear contact surfaces are as clean as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the guide rail assembly used in the cutting equipment of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the cutting device and the guide rail assembly of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the composite beam rail, slide seat and end cleaning mechanism of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the end cleaning mechanism of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the vent seat and the card seat part of the present invention.

[0021] Figure 6 The figure is a schematic diagram of the fitting of several spacer cards of the present invention.

[0022] Figure 7 It is a side sectional structural diagram of the cooperation between the end cleaning mechanism and the slide rail portion of the present invention.

[0023] In the figure: 1, composite beam rail; 2, slide seat; 3, end cleaning mechanism; 11, slide rail portion; 21, slider; 22, fixed block; 23, movable block; 24, adjustment block; 25, connecting seat; 31, vent seat; 32, spacer; 33, first elastic member; 34, plug; 35, second elastic member; 31a, seat portion; 31b, recessed portion; 31c, convex portion; 31d, air supply channel; 31e, air exhaust channel; 31f, air outlet cavity; 31g, limiting edge; 31h, air exhaust cavity; 31i, partition cavity; 321, clearance groove; 322, conducting portion; 323, conducting groove; 324, air supply cavity. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Examples, such as Figure 1-Figure 7 As shown: The present invention provides a guide rail assembly for cutting equipment, which includes a composite beam rail 1 and a slide seat 2 slidably mounted on the composite beam rail 1. The composite beam rail 1 is provided with a slide rail portion 11 and two slide rails are provided at the same level and are arranged on both sides. Slide blocks 21 are provided on both sides of the slide seat 2. The slide seat 2 is movably mounted between the slide rail portions 11 by contacting the slide blocks 21 on both sides with the slide rail portions 11. The slide rail structure is formed by the engagement of the slide seat 2 with the slide rail portion 11 of the composite beam. Different from the engagement of both ends of a slide block 21 on the slide rail, this embodiment In the example, the limit ends of the slide 2 are located on both sides, and the slide 2 is limited by the slide rails 11 on both sides. The slide 2 is fixed with a fixed block 22 and a detachable movable block 23. The slider 21 is mounted on the fixed block 22 and the movable block 23. The movable block 23 is mounted on the slide 2 by bolts. An adjusting block 24 is further provided between the movable block 23 and the fixed block 22 by bolts. The adjusting block 24 is conical or prism-shaped and is used to adjust the distance between the movable block 23 and the fixed block 22 so that the movable block 23 and the fixed block 22 are spread out and pressed against the slide rails 11 on both sides. It should be noted that the slide rail portion 11 has two contact surfaces and forms a convex surface, that is, the slide rail portion 11 is convex and the upper and lower sides of the convex position are contact surfaces. There is an angle between the two contact surfaces, and the angle range is within 60°-120°. In this embodiment, the angle between the two contact surfaces is 90°. The slider 21 includes two contact surfaces and forms a concave surface that fits the contact surface of the slide rail portion 11. It should also be noted that the contact surface of the slide rail portion 11 and the slider 21 are made of self-lubricating material, so that the sliding between the two through surface friction can be smoother. For example, POM (polyoxymethylene) material has good self-lubricating properties in a wide temperature and humidity range, which can reduce friction and wear.

[0026] The structure of the slider 21 and the slide rail portion 11, in which the two side slide rail portions 11 restrict the middle slider 21, usually combines the slide rail portion 11 with the structural beam to ensure functionality and strength. This also makes it difficult to protect the slider 21 and the slide rail portion 11 separately, resulting in dust entering the gap during vibration. Therefore, the slide 2 is provided with an end-clearing mechanism 3 at the end of the slider 21 and contacts the slide rail portion 11. Specifically, a connecting seat 25 is provided on both sides of the fixed block 22 and the movable block 23. The end-clearing mechanism 3 is installed on the connecting seat 25 and then installed on the end of the slider 21. The end-clearing mechanism 3 includes a vent seat 31 and a spacer 32 installed on the vent seat 31. The vent seat 31 includes a plurality of card seats 31a and the plurality of card seats 31a are staggered. The card seats 31a are "L" shaped. A single card seat 31a has a concave portion 31b and a convex portion 31c, which point to the slide rail respectively. The recesses 31b and the protrusions 31c are arranged alternately on different contact surfaces of the slide rail portion 11. The recesses 31b and the protrusions 31c are at different distances from the slide rail portion 11. There is a gap between the contact surface of the protrusion 31c and the slide rail portion 11. In addition, an air supply channel 31d and an air extraction channel 31e are provided in the vent seat 31. The air supply channel 31d forms an air outlet cavity 31f on the recess 31b, and the air extraction channel 31e forms an air extraction cavity 31h on the protrusion 31c. A plurality of spacers 32 are provided, and the spacers 32 are separately provided on the card seat portion 31a, specifically, installed on the air outlet cavity 31f. It should be noted that the length of the air outlet cavity 31f and the air extraction cavity 31h is greater than the width of the contact surface of the slide rail portion 11, and the two ends of the air outlet cavity 31f and the air extraction cavity 31h are located outside the contact surface in the projection on the plane where the contact surface is located, thereby ensuring the coverage range of the air outlet cavity 31f and the air extraction cavity 31h.

[0027] As for the installation of the spacer card 32, limiting edges 31g are provided on both sides of the air outlet cavity 31f, and the air outlet cavity 31f is provided with an opening at the end of the card seat portion 31a. There are makeshift grooves 321 on both sides of the top of the spacer card 32 and they are stuck in the limiting edges 31g. A structural column is provided on the limiting edge 31g at the opening at the end of the card seat portion 31a. The structural column is used to limit the freedom of the spacer card 32 to move toward the outside of the opening. A first elastic member 33 is provided on the top of the spacer card 32 to abut against the inner side of the air outlet cavity 31f. The first elastic member 33 Made of rubber, the first elastic member 33 provides elastic force to drive the spacer 32 toward the contact surface of the slide rail portion 11. It should be noted that the distance between the limiting edge 31g and the contact surface of the slide rail portion 11 is smaller than the distance between the top of the clearance groove 321 of the spacer 32 and the bottom of the spacer 32. This allows the spacer 32 to always abut against the contact surface of the slide rail portion 11 and maintain contact with the slide rail portion 11 even when the gap increases due to vibration between the composite beam rail 1 and the slide seat 2. Therefore, by adopting the above-mentioned vent seat 31, the posture of the spacer card 32 after installation can be determined, so that the spacer card 32 is arranged at intervals on the contact surface on the same side of the slide rail part 11. At the same time, it should be noted that the maximum thickness of the spacer card 32 is in the part from the give way groove 321 to the bottom end of the spacer card 32, and the thickness there is equal to the thickness of the card seat part 31a, so that the spacer card 32 contacts the spacer card 32 on the contact surface on the opposite side.

[0028] Subsequently, at least one spacer 32 is provided on each of the two contact surfaces of the slide rail portion 11 and is disposed adjacent to each other. Adjacent spacers 32 are placed in a cross-like manner on the slide rail portion 11 to form a scraping range for the contact surface of the slide rail portion 11. It can be seen that the bottom surface of the spacer 32 is also made of self-lubricating material. In this embodiment, there are six card holders 31a and four spacers 32. In coordination with this, for the air extraction chamber 31h and the air outlet chamber 31f, the air extraction chamber 31h forms a negative pressure space on the contact surface of the slide rail portion 11 between adjacent spacer cards 32 or between the spacer card 32 and the slide 2. That is, the spacer card 32 closest to the slide 2 can also cooperate with the slide 2 to form a negative pressure space. The direct outlet of the air outlet chamber 31f equipped with the spacer card 32, which was originally formed on the recess 31b, is blocked by the spacer card 32, and the air extraction chamber 31h is set to open when the direct outlet of the air outlet chamber 31f is blocked. To this end, a partition cavity 31i is provided in the middle of the air extraction cavity 31h along the length direction of the limiting edge 31g of the card seat portion 31a. A block 34 is provided in the partition cavity 31i through a second elastic member 35 for isolating the air extraction channel 31e and the direct outlet of the air extraction cavity 31h formed on the convex portion 31c. The second elastic member 35 is made of rubber. At the same time, a protruding conductive portion 322 is provided on the end of the partition card 32 close to the convex portion 31c, so that the conductive portion 322 of the partition card 32 installed in the air outlet cavity 31f is embedded in the partition cavity 31i, and a conductive groove 323 is provided in the conductive portion 322 for connecting the air extraction cavity 31h.

[0029] In this embodiment, an air-supply chamber 324 is provided on one end of the spacer card 32 near the convex portion 31c. The air-supply chamber 324 is connected from the top end of the spacer card 32 to the bottom end of the spacer card 32 and points to between the air extraction chamber 31h and the slide rail portion 11. The air-supply chamber 324 serves as an indirect outlet formed by the air outlet chamber 31f on the concave portion 31b, and cooperates with the air extraction chamber 31h to form a negative pressure and positive pressure cycle on the contact surface of the slide rail portion 11 as an internal circulation.

[0030] In this embodiment, there are at least two air outlet cavities 31f on the outside of the vent seat 31, which are not equipped with spacer cards 32. The air outlet cavity 31f without spacer cards 32 forms a positive pressure space on the outside of the spacer card 32 of the previous air outlet cavity 31f. The air outlet cavity 31f without spacer cards 32 forms a negative pressure and positive pressure cycle with the previous exhaust cavity 31h, which serves as an external circulation.

[0031] In summary, in the specific implementation, the spacer card 32 is installed on the air outlet cavity 31f, and the first elastic member 33 at the top of the spacer card 32 is pressed against the top of the air outlet cavity 31f to compress it, so that the clearance groove 321 of the spacer card 32 is stuck into the limiting edge 31g, and then the spacer card 32 is pushed into the air outlet cavity 31f and the direct outlet of the air outlet cavity 31f originally formed on the recess 31b is blocked. At the same time, the conductive portion 322 on the spacer card 32 is inserted into the partition cavity 31i against the plug 34. The length of the partition cavity 31i is greater than the sum of the lengths of the conductive portion 322 and the plug 34. Starting from one end of the slider 21, the spacer card 32 is sequentially arranged toward the outside of the vent seat 31. Four spacers 32 are placed and an air outlet cavity 31f is left outside the vent seat 31 without the spacer 32. Then the vent seat 31 can be installed on the connecting seat 25 and then on the two side ends of the slider 21. Following the installation of the slider 2, it is pressed against the slide rail portion 11. When installing the slider 2, the movable block 23 is loosened, and the fixed block 22 is first clamped on the slide rail portion 11 on one side. Then, the adjusting block 24 is locked to tighten the movable block 23 against the other slide rail portion 11 until the sliders 21 on both sides are pressed against the slide rail portion 11. At this time, the vent seat 31 drives the spacer 32 to fit on the slide rail portion 11 in the form of compressing the first elastic member 33. When the cutting equipment is in use, the slide 2 carries the cutting equipment and moves on the plate. By setting the cutting direction, most of the dust can be accumulated in one direction. However, the equipment environment is controllable and the processing environment is uncontrollable. The dust generated by the processing environment outside the equipment and some of the dust that has not been concentrated begin to affect the slide rail part 11 and accumulate on the slide rail part 11. The four spacers 32 cross each other and scrape the slide rail part 11 in front of the movement path of the slider 21 when the slide 2 slides, scraping the dust on the main contact surface to prevent the dust from entering the slider 21 from the contact surface of the slide rail part 11 on the movement path of the slider 21. At the same time, the air supply channel 31d and the air exhaust channel 31e of the vent seat 31 They are respectively connected to the air supply device and the negative pressure device. When scraping, for some dust that has escaped from the gaps at the edges and in the middle of the slide rail portion 11, as well as the dust that may exist in the opening between the two spacers on the outside of the slide rail portion 11, the air supply cavity 324 drives the air flow and dust to move without adhering to the contact surface of the slide rail portion 11. At the same time, the negative pressure is formed by the air extraction cavity 31h to adsorb the moving dust. At the front end of the vent seat 31, for the contact surface to be scraped, the air outlet cavity 31f without the spacer card 32 is blown to blow away the dust. The dust close to the spacer card 32 may become dust that affects the slider 21, and these are sucked away and adsorbed by the previous air extraction cavity 31h. Therefore, three processing methods are carried out on the surface of the contact surface. The first is to scrape and remove by the partition card 32. The second is to use the airflow to drive the dust on the contact surface inside the partition card 32 and the surrounding area of ​​the slide rail part 11 for directional collection, that is, internal circulation. The third is to use the airflow to drive the dust on the contact surface outside the vent seat 31 and the surrounding area of ​​the slide rail part 11 for directional collection, thereby ensuring that the front and back of the contact surface are as clean as possible, and avoiding long-term vibration resulting in multiple gaps between the slider 21 and the slide rail part 11, which can allow dust to enter.

[0032] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A guide rail assembly for cutting equipment, characterized in that: The structure includes a composite beam rail and a slide seat slidably mounted on the composite beam rail. The composite beam rail is provided with a slide rail portion and two slide rails are provided at the same level. Slide blocks are provided on both sides of the slide seat. The slide seat is movably mounted between the slide rail portions through the contact of the slide blocks on both sides with the slide rail portions. The slide seat is provided with an end cleaning mechanism at the end of the slide block and is in contact with the slide rail portion. The slide rail portion has two contact surfaces formed in a convex shape, and the slider includes two contact surfaces formed in a concave shape to fit the contact surfaces of the slide rail portion; The end cleaning mechanism includes a vent seat and a spacer mounted on the vent seat, the vent seat includes a plurality of card seats arranged in a staggered manner, a plurality of spacers are provided and are arranged on the card seats to abut against the contact surface of the slide rail portion, and at least one spacer is provided on each of the two contact surfaces of the slide rail portion and is arranged adjacent to each other; An air supply channel and an air exhaust channel are provided in the vent seat. A single card seat portion has a recess and a protrusion that point to different contact surfaces of the slide rail portion respectively. The recess and the protrusion are arranged alternately on a single contact surface. The air supply channel forms an air outlet cavity on the recess and the air exhaust channel forms an air exhaust cavity on the protrusion. The spacer is mounted on the air outlet cavity.

2. A guide rail assembly for cutting equipment according to claim 1, characterized in that: Limiting edges are provided on both sides of the air outlet cavity, and an opening is provided at the end of the seat portion. Displacement grooves are provided on both sides of the top of the partition card and are inserted into the limiting edges. A first elastic member is provided on the top of the partition card to abut against the inner side of the air outlet cavity, and the first elastic member provides elastic force to drive the partition card to move toward the contact surface of the slide rail portion.

3. The guide rail assembly for cutting equipment according to claim 1, characterized in that: The spacers are arranged at intervals on the contact surface on the same side of the slide rail portion and contact the spacers on the contact surface on the opposite side. A gap exists between the convex portion and the contact surface of the slide rail portion. The air extraction cavity forms a negative pressure space on the contact surface of the slide rail portion through adjacent spacers or between the spacers and the slide seat. The direct outlet of the air outlet cavity equipped with the partition card, which is originally formed on the recessed portion, is blocked by the partition card, and the air extraction cavity is opened as the direct outlet of the air outlet cavity is blocked.

4. The guide rail assembly for cutting equipment according to claim 3, characterized in that: A partition cavity is provided in the middle of the air pumping cavity along the length direction of the limiting edge of the seat portion, and a plug is provided in the partition cavity through a second elastic member to separate the air pumping channel and the direct outlet of the air pumping cavity formed on the convex portion; A protruding conducting portion is provided on one end of the partition card close to the convex portion. The conducting portion of the partition card installed in the air outlet cavity is embedded in the partition cavity. A conducting groove is provided in the conducting portion for connecting with the air extraction cavity.

5. The guide rail assembly for cutting equipment according to claim 4, characterized in that: An air replenishing cavity is provided on one end of the partition card near the convex portion. The air replenishing cavity is connected from the top end of the partition card to the bottom end of the partition card and points to between the air extraction cavity and the slide rail portion. The air replenishing cavity serves as an indirect outlet of the air outlet cavity formed on the concave portion.

6. A guide rail assembly for cutting equipment according to claim 4 or 5, characterized in that: The air outlet cavity without the spacer card forms a positive pressure space outside the spacer card of the previous air outlet cavity. There are at least two air outlet cavities outside the vent seat that are not equipped with spacers. The air outlet cavity without the spacer card forms a negative pressure and positive pressure cycle with the previous vacuum cavity.

7. The guide rail assembly for cutting equipment according to claim 1, characterized in that: The lengths of the air outlet cavity and the air pumping cavity are greater than the width of the contact surface of the slide rail portion, and both ends of the air outlet cavity and the air pumping cavity are located outside the contact surface in projections on the plane where the contact surface is located.

8. The guide rail assembly for cutting equipment according to claim 1, characterized in that: An included angle is formed between the two contact surfaces of the slide rail portion, and the included angle range is within 60°-120°.

9. The guide rail assembly for cutting equipment according to claim 2, characterized in that: The distance between the limiting edge and the contact surface of the slide rail part is smaller than the distance from the top of the spacer card's clearance groove to the bottom of the spacer card. A structural column is provided on the limiting edge at the opening at the end of the card seat part, and the structural column is used to limit the freedom of the spacer card to move toward the outside of the opening.

10. The guide rail assembly for cutting equipment according to claim 1, characterized in that: The slide seat is fixedly provided with a fixed block and a detachable movable block, the slider is mounted on the fixed block and the movable block, and an adjustment block is provided between the movable block and the fixed block for adjusting the distance between the movable block and the fixed block.

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