Rack protection structure for cutting bed

Abstract

The invention belongs to the technical field of cutting bed accessories, and relates to a rack protection structure for a cutting bed, which comprises a cutting bed and a cross beam, racks with upward tooth surfaces are arranged on two sides of the cutting bed, guide rails are arranged below the racks in parallel, and cross beam driving components for driving the cross beam to slide are arranged on two sides of the cross beam. The cross beam driving assembly comprises a driving seat, a power device and a gear, the power device is in transmission connection with the gear, the gear is in meshing transmission with the rack, a toothed belt penetrating through the driving seat is arranged above the rack, and protective teeth capable of being meshed with the rack are formed at the bottom of the toothed belt; the toothed belt in the driving base is located above the gear, the toothed belt outside the driving base is meshed with the rack to form a covering type protection structure, and the toothed belt is attracted to the tooth face of the rack through magnetism. The rack protection structure for the cutting bed has the advantages that the structure is simple, maintenance is convenient, and the effective stroke of the bed body is not occupied.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting machine accessories and relates to a rack protection structure for a cutting machine. Background Art

[0002] At present, the mainstream transmission mode of the crossbeam and longitudinal beam of the cutting table is the gear rack transmission, which is highly efficient, fast, and accurately positioned, and is widely used in the cutting table industry. However, when designing the cutting table bed structure, considering the transmission scheme and economy, the rack teeth are often arranged facing upward; once the rack teeth are arranged facing upward, dust, fabric debris, film, etc. will inevitably accumulate on the tooth surface. If the cutting table runs for a long time under the above working conditions, it will cause the gear rack to wear more and the noise to increase, which will seriously affect the accuracy and life of the transmission system.

[0003] In order to solve the technical problem of rack protection, technicians in this field generally use accordion-type protective cover. Although the accordion-type protective cover can protect the rack, it needs to reserve a lot of compression storage space when working. These compression storage spaces will greatly occupy the effective stroke of the bed, resulting in the bed being too long and the size being not compact enough.

[0004] Therefore, it is of great value to develop a rack protection structure which has a simple structure, is easy to maintain, and does not occupy the effective travel of the bed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a rack protection structure for a cutting machine, which has the advantages of simple structure, convenient maintenance, and does not occupy the effective travel of the bed.

[0006] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions:

[0007] A rack protection structure for a cutting bed comprises a bed and a crossbeam, wherein racks with tooth surfaces facing upward are arranged on both sides of the bed, and guide rails are arranged parallel to the racks, and beam drive components for driving the crossbeam to slide are arranged on both sides of the crossbeam, and the crossbeam drive components comprise a drive seat, a power device and a gear, a slider sliding on the guide rail is arranged on the inner side of the bottom of the drive seat, the power device is connected to the gear transmission, and the gear is meshed with the rack for transmission, a toothed belt passing through the drive seat is arranged above the rack, and protective teeth that can mesh with the rack are formed on the bottom of the toothed belt, the toothed belt in the drive seat is located above the gear, and the toothed belt outside the drive seat meshes with the rack to form a covering protection structure, and the toothed belt is magnetically adsorbed on the tooth surface of the rack.

[0008] In the above-mentioned rack protection structure for a cutting machine, a permanent magnet is embedded in the toothed belt to form a magnetic toothed belt, and the rack is made of a metal material that can be attracted by magnets. Preferably, the rack is made of a steel rack.

[0009] In the above-mentioned rack protection structure for a cutting table, the toothed belt is integrally injection-molded by a flexible material and a magnetic material. The flexible material is preferably plastic or rubber, and the magnetic material is preferably magnetic powder.

[0010] In the above-mentioned rack protection structure for a cutting machine, it is more preferred that a plurality of mounting holes are arranged in the toothed belt along the width direction, and magnetic needles are embedded in the mounting holes, and the magnetic needles are embedded in the mounting holes by interference fit.

[0011] In the above-mentioned rack protection structure for a cutting machine, the mounting hole is arranged in the middle of the root of the toothed belt protection tooth, and adjacent mounting holes have the same spacing. For example, a mounting hole is arranged for installing a magnetic needle every same number of protection teeth.

[0012] In the above-mentioned rack protection structure for a cutting table, the toothed belt and the rack are arranged with the same width, and the two ends of the toothed belt are fastened to the rack through a belt fixing bracket; preferably, the belt fixing bracket is an L-shaped bracket, the horizontal part of the belt fixing bracket presses the toothed belt downward, and the vertical part is fixedly connected to the end of the rack through a fastener.

[0013] In the above-mentioned rack protection structure for a cutting machine, a gear protection ring and a pair of belt guide idler wheels are arranged on the side of the driving seat, the gear protection ring is an arched structure and is arranged above the gear along the outer peripheral contour of the gear, the belt guide idler wheels are distributed on both sides of the gear protection ring, the bottom of the toothed belt is in contact with the gear protection ring, the bottom of the belt guide idler wheel is in contact with the upper surface of the toothed belt, and the toothed belt is guided downward along the outer contour of the gear protection ring to the bottom of the belt guide idler wheel and then passes through the driving seat outward.

[0014] In the above-mentioned rack protection structure for a cutting machine, the gear protection ring is fastened to the driving seat by a plurality of axial fasteners, the belt guide idler wheel is rotatably arranged on the axle, and the axle is axially fixed on the driving seat.

[0015] In the above-mentioned rack protection structure for a cutting machine, the inner wall of the gear protection ring is clearance-matched with the outer peripheral surface of the gear, the bottom of the gear protection ring is clearance-matched with the rack, the guide surface of the belt guide idler wheel is adapted to the width of the toothed belt, axial limit stops are provided on both sides of the guide surface, the bottom of the guide surface is clearance-matched with the rack, and the clearance size is greater than the thickness of the toothed belt.

[0016] In the above-mentioned rack protection structure for a cutting machine, a protective cover is provided on the inner cover of the driving seat, and the protective cover covers the gear, gear protection ring, belt guide idler wheel, and toothed belt in the driving seat, and the bottom of the protective cover cooperates with the rack gap to form a gap for the toothed belt to pass through.

[0017] In the above-mentioned rack protection structure for a cutting machine, grease is provided between the rack and the gear, and between the rack and the toothed belt.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a rack protection structure for a cutting machine, which adds a toothed belt covering the exposed tooth surface of the rack to protect the rack. The toothed belt of the present invention adopts a magnetic toothed belt, which can ensure that the toothed belt will not loosen or fall off within the full stroke of the rack, and at the same time improves the sealing performance between the toothed belt and the tooth groove of the rack, which can more effectively prevent foreign matter from invading the tooth surface of the rack.

[0020] 2. The present invention adopts a magnetic toothed belt and a rack meshing mode for protection, which ensures the cleanliness of the grease on the tooth surface of the rack, thereby ensuring the lubricating effect of the grease, and can also increase the service life of the grease and extend the maintenance cycle of the rack.

[0021] 3. The present invention adopts a magnetic toothed belt and a rack meshing mode for protection. Compared with the traditional accordion protective cover, the present invention does not occupy the effective travel of the bed, making the bed structure more compact.

[0022] 4. The present invention further adds a belt guide idler wheel and a gear protection ring. At the transmission part of the gear rack, through the guiding effect of the belt guide idler wheel and the gear protection ring, the toothed belt can bypass the gear to avoid the running gear without interfering with the gear rack transmission structure.

[0023] 5. The present invention realizes the magnetization of the toothed belt by embedding magnetic needles in the width direction. Compared with other methods such as magnetic powder, the magnetization method of the present invention can produce stronger magnetism. At the same time, the magnetic needles of the present invention will not affect the winding flexibility of the toothed belt in the length direction, and can also increase its structural strength in the width direction, making the toothed belt run more stably.

[0024] 6. The present invention adopts a magnetic toothed belt and a rack meshing method for protection, which can effectively prevent safety accidents such as the rack and gear pressing on the fingers and clothes of personnel during the production operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a stereogram of the present invention;

[0026] Figure 2 yes Figure 1 A magnified image of point A;

[0027] Figure 3 yes Figure 1 A magnified view of point B;

[0028] Figure 4 It is a guide structure diagram of the present invention;

[0029] Figure 5 yes Figure 4 Enlarged view of point C;

[0030] Figure numerals: 1. rack; 2. guide rail; 3. drive seat; 4. power unit; 5. gear; 6. slider; 7. toothed belt; 8. protective tooth; 9. mounting hole; 10. magnetic needle; 11. belt fixing bracket; 12. gear protection ring; 13. belt guide idler wheel; 14. guide surface; 15. axial limit stop edge. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-5 :

[0032] A rack protection structure for a cutting bed, comprising a bed and a crossbeam, wherein racks 1 with tooth surfaces facing upward are arranged on both sides of the bed, guide rails 2 are arranged parallel to and below the rack 1, and beam drive components for driving the crossbeam to slide are arranged on both sides of the crossbeam, and the crossbeam drive components comprise a drive seat 3, a power device 4 and a gear 5, a slider 6 sliding on the guide rail 2 is arranged on the inner side of the bottom of the drive seat 3, the power device 4 is transmission-connected with the gear 5, the gear 5 is meshed with the rack 1 for transmission, a toothed belt 7 penetrating the drive seat 3 is arranged above the rack 1, and protective teeth 8 capable of meshing with the rack 1 are formed on the bottom of the toothed belt 7, the toothed belt 7 in the drive seat 3 is located above the gear 5, and the toothed belt 7 outside the drive seat 3 is meshed with the rack 1 to form a covering protection structure, and the toothed belt 7 is magnetically adsorbed on the tooth surface of the rack 1.

[0033] Compare with Figure 1 and attached Figure 2The working method of this embodiment is: start the power device 4 (motor), the power device 4 drives the gear 5 to rotate through the synchronous belt transmission structure, and drives the gear 5 on the other side to rotate synchronously through the intermediate pulley and the intermediate pulley shaft. When the gear 5 rotates, it generates displacement relative to the rack 1, and drives the drive seat 3 to slide along the guide rail 2 to achieve the sliding of the crossbeam. The toothed belt 7 outside the drive seat 3 is adsorbed on the tooth surface of the rack 1 through its magnetism, and the protective teeth 8 are engaged with the tooth grooves of the rack 1 to form a sealed covering protective structure. With the sliding of the drive seat 3, the toothed belt 7 is lifted up and separated from the tooth surface of the rack 1 when entering the drive seat 3, bypasses the top of the gear 5, and then passes through the other side of the drive seat 3. After passing through, it re-engages with the rack 1 to form a protective structure in time.

[0034] The toothed belt 7 is embedded with a permanent magnet to form a magnetic toothed belt 7. The rack 1 is made of a metal material that can be attracted by magnets. Preferably, the rack 1 is made of a steel rack 1. Figure 5 In this embodiment, a plurality of mounting holes 9 are provided in the toothed belt 7 along the width direction, and a magnetic needle 10 is embedded in the mounting hole 9. The magnetic needle 10 is inserted into the mounting hole 9 by interference fit. Further, the mounting hole 9 is provided in the middle of the tooth root of the protective tooth 8 of the toothed belt 7, and adjacent mounting holes 9 have the same spacing. For example, a mounting hole 9 is provided for installing the magnetic needle 10 for each protective tooth 8 with the same number of spacings. In this embodiment, a magnetic needle 10 is installed for each protective tooth 8.

[0035] In order to provide better and more stable protection, Figure 3 The toothed belt 7 and the rack 1 are arranged with the same width, and the two ends of the toothed belt 7 are fastened to the rack 1 through a belt fixing bracket 11; preferably, the belt fixing bracket 11 is an L-shaped bracket, and the horizontal part of the belt fixing bracket 11 presses the toothed belt 7 downward, and the vertical part is fixedly connected to the end of the rack 1 through a fastener.

[0036] Compare with Figure 4The present invention further provides a guiding structure of the toothed belt 7 in the driving seat 3: a gear protection ring 12 and a pair of belt guide idler wheels 13 are arranged on the side of the driving seat 3, the gear protection ring 12 is an arched structure and is arranged above the gear 5 along the outer peripheral contour of the gear 5, the belt guide idler wheels 13 are distributed on both sides of the gear protection ring 12, the bottom of the toothed belt 7 is in contact with the gear protection ring 12, the bottom of the belt guide idler wheels 13 is in contact with the upper surface of the toothed belt 7, and the toothed belt 7 is guided downward along the outer contour of the gear protection ring 12 to the belt guide idler wheels 13 The toothed belt 7 passes through the bottom of the driving seat 3 and then passes out of the driving seat 3. After entering the driving seat 3, the toothed belt 7 is transmitted along the bottom of the first belt guide idler wheel 13, the top of the gear protection ring 12, and the bottom of the second belt guide idler wheel 13 in sequence. After entering the driving seat 3, the toothed belt 7 is separated from the tooth surface of the rack 1 through the above-mentioned guide structure and is isolated from the gear 5 rack 1 transmission system, thereby avoiding the gear 5 rack 1 transmission system. After passing through the driving seat 3, due to the guiding effect of the second belt guide idler wheel 13 and the use of its magnetism, the toothed belt 7 can be re-engaged with the tooth surface of the rack 1.

[0037] In this embodiment, the installation structure of the gear protection ring 12 and the belt guide idler wheel 13 is: the gear protection ring 12 is fastened to the drive seat 3 by a plurality of axial fasteners, and the belt guide idler wheel 13 is rotatably set on the axle, and the axle is axially fixed on the drive seat 3.

[0038] Furthermore, the inner wall of the gear protection ring 12 is clearance-matched with the outer circumferential surface of the gear 5, the bottom of the gear protection ring 12 is clearance-matched with the rack 1, the guide surface 14 of the belt guide idler wheel 13 is adapted to the width of the toothed belt 7, and axial limit stops 15 are provided on both sides of the guide surface 14, and the bottom of the guide surface 14 is clearance-matched with the rack 1, and the clearance size is greater than the thickness of the toothed belt 7.

[0039] In order to further protect the transmission structure, a protective cover is provided on the inner cover of the driving seat 3, and the protective cover covers the gear 5, the gear protection ring 12, the belt guide idler wheel 13, and the toothed belt 7 in the driving seat 3. The bottom of the protective cover is loosely matched with the rack 1 to form a gap for the toothed belt 7 to pass through.

[0040] Grease is provided between the rack 1 and the gear 5 and between the rack 1 and the toothed belt 7 to provide lubrication during transmission. The toothed belt 7 can also protect the grease at the same time.

[0041] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rack protection structure for a cutting bed, comprising a bed and a crossbeam, wherein racks (1) with tooth surfaces facing upward are arranged on both sides of the bed, and guide rails (2) are arranged parallel to the racks (1), and crossbeam drive components for driving the crossbeam to slide are arranged on both sides of the crossbeam, and the crossbeam drive components include a drive seat (3), a power device (4) and a gear (5), and a slider (6) sliding on the guide rail (2) is arranged on the inner side of the bottom of the drive seat (3), the power device (4) is connected to the gear (5) in transmission, and the gear (5) is meshed with the rack (1) for transmission, characterized in that: A toothed belt (7) is arranged above the rack (1) and passes through the drive seat (3); a protective tooth (8) capable of meshing with the rack (1) is formed at the bottom of the toothed belt (7); the toothed belt (7) inside the drive seat (3) is located above the gear (5); the toothed belt (7) outside the drive seat (3) meshes with the rack (1) to form a covering protective structure; the toothed belt (7) is magnetically adsorbed on the tooth surface of the rack (1).

2. A rack protection structure for a cutting machine according to claim 1, characterized in that: The toothed belt (7) is embedded with a permanent magnet to form a magnetic toothed belt (7), and the rack (1) is a steel rack.

3. A rack protection structure for a cutting machine according to claim 2, characterized in that: The toothed belt (7) is formed by integral injection molding of flexible material and magnetic material.

4. A rack protection structure for a cutting machine according to claim 2, characterized in that: A plurality of mounting holes (9) are arranged in the toothed belt (7) along the width direction, and magnetic needles (10) are embedded in the mounting holes (9).

5. A rack protection structure for a cutting machine according to claim 4, characterized in that: The mounting holes (9) are arranged at the middle of the tooth roots of the protective teeth (8) of the toothed belt (7), and adjacent mounting holes (9) have the same spacing.

6. The rack protection structure for a cutting machine according to claim 1, characterized in that: The toothed belt (7) and the rack (1) are arranged with the same width, and the two ends of the toothed belt (7) are fixedly connected to the rack (1) via a belt fixing bracket (11).

7. The rack protection structure for a cutting machine according to claim 1, characterized in that: A gear protection ring (12) and a pair of belt guide idler wheels (13) are arranged on the side of the driving seat (3); the gear protection ring (12) is an arched structure and is arranged above the gear (5) along the outer peripheral contour of the gear (5); the belt guide idler wheels (13) are distributed on both sides of the gear protection ring (12); the bottom of the toothed belt (7) is in contact with the gear protection ring (12); the bottom of the belt guide idler wheels (13) is in contact with the upper surface of the toothed belt (7); the toothed belt (7) is guided downward along the outer contour of the gear protection ring (12) to the bottom of the belt guide idler wheels (13) and then passes out of the driving seat (3).

8. A rack protection structure for a cutting machine according to claim 7, characterized in that: The inner wall of the gear protection ring (12) is clearance-matched with the outer peripheral surface of the gear (5), the bottom of the gear protection ring (12) is clearance-matched with the rack (1), the guide surface (14) of the belt guide idler wheel (13) is adapted to the width of the toothed belt (7), axial limit stop edges (15) are provided on both sides of the guide surface (14), the bottom of the guide surface (14) is clearance-matched with the rack (1), and the clearance size is greater than the thickness of the toothed belt (7).

9. The rack protection structure for a cutting machine according to claim 7, characterized in that: The inner cover of the driving seat (3) is provided with a protective cover, wherein the gear (5), the gear protection ring (12), the belt guide idler wheel (13), and the toothed belt (7) in the driving seat (3) are covered therein, and the bottom of the protective cover is loosely matched with the rack (1) to form a gap for the toothed belt (7) to pass through.

10. The rack protection structure for a cutting machine according to claim 1, characterized in that: Lubricating grease is provided between the rack (1) and the gear (5), and between the rack (1) and the toothed belt (7).

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