A protection mechanism for a numerical control machine tool

Abstract

The application discloses a kind of CNC machine tool protection mechanism, it is related to CNC machine tool field, including machine tool body and protective cover, the bottom of the protective cover is provided with rack, and fixed gear is installed on machine tool body, one end of the fixed gear is connected with transmission mechanism, and another end located in transmission mechanism is connected with threaded rod, there is push plate in the machine tool body, and the bottom of machine tool body has collecting groove, the machine tool body is provided with bolt, and the bottom of bolt is connected with ejector rod, the bottom of push plate has locating sleeve, and locating sleeve is equipped with sliding rod.The fixed gear will be reversed rotation, the push plate in the inside will be after processing scrap push to the collecting groove of machine tool body, realize the unified collection processing to the scrap of processing, simultaneously, when protective cover is closed, sliding rod will be inserted into machine tool body, and ejector rod is lifted upward, when the bolt hole in the bottom of protective cover slides to the bolt, realize the location fixing of protective cover.

Description

Technical Field

[0001] The present invention relates to the field of numerically controlled machine tools, in particular to a protection mechanism for numerically controlled machine tools. Background Art

[0002] CNC lathe is one of the most widely used CNC machine tools at present. It is mainly used for cutting inner and outer cylindrical surfaces of shaft parts or disk parts, inner and outer conical surfaces of arbitrary taper angles, complex rotating inner and outer curved surfaces and cylindrical and conical threads, and can perform grooving, drilling, reaming, boring and boring, etc. In order to facilitate the staff to load and remove materials, and to facilitate the cleaning and maintenance of the CNC lathe, and to prevent the staff from accidentally touching the chuck or workpiece during the processing process, the existing CNC lathe is usually equipped with a sliding protective plate. When loading and removing materials or cleaning and maintaining the lathe, the protective plate is slid to one end to facilitate the staff to contact the chuck and other components from the opening, which is convenient for loading and unloading and cleaning.

[0003] The Chinese patent with announcement number CN215788552 U provides a protective cover for CNC machine tools. The processing status of the workpiece can be observed through the display of the CNC operation area and the two observation windows on the sliding door, and the operation can be adjusted in time. When iron chips and other waste chips generated during the workpiece processing splash onto the inner side of the tempered glass on the sliding door and affect the observation, the operator can pull the moving block handle on the second moving block. The magnets set in the first moving block and the second moving block attract each other, control the first moving block and the scraper to scrape off the iron chips adhered to the inner side of the tempered glass, and restore the observation field of view.

[0004] The protective cover of the above structure will slide during the processing. If the worker accidentally touches it or the machine tool vibrates during the processing, it is very easy to cause the protective cover to slide to one side, thereby making the protective cover lose its protective purpose and causing personal injury to the worker. At the same time, there will be a large amount of waste chips in the machine tool after the processing is completed, and it needs to be cleaned after each processing. The subsequent cleaning process is too time-consuming and labor-intensive, thereby increasing the workload of the worker. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a CNC machine tool protection mechanism to solve the technical problem that the protective cover itself will slide during the processing, which may easily cause personal injury to the staff, and the subsequent cleaning process is too time-consuming and labor-intensive, thereby increasing the workload of the staff.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a CNC machine tool protection mechanism, comprising a machine tool body and a protective cover, a rack being provided at the bottom of the protective cover, and a fixed gear cooperating with the rack being installed on the machine tool body, one end of the fixed gear being connected to a transmission mechanism, and a threaded rod being connected to the other end of the transmission mechanism, a push plate cooperating with the threaded rod being symmetrically slidably provided in the machine tool body, and a collecting trough being provided at the bottom of the machine tool body, a latch being elastically provided on the machine tool body, and a push rod being connected to the bottom of the latch, a positioning sleeve being provided at the bottom of the push plate, and a sliding rod cooperating with the push rod being installed on one side of the positioning sleeve, and a latch hole cooperating with the latch being provided at the bottom of the protective cover.

[0007] By adopting the above technical solution, the internal push plate will slide to both sides during the sliding of the protective cover through the action of the transmission mechanism. After the processing is completed, the staff will open the protective cover. At this time, the fixed gear will rotate in the opposite direction, and the internal push plate will push the processed waste chips into the collection groove of the machine tool body, so as to realize the unified collection and treatment of the processed waste chips. During this process, the staff does not need to perform manual cleaning later, which effectively reduces the overall workload. The sliding rod will be inserted into the machine tool body to push the push rod upward. Since the protective cover limits the top of the pin, the reset spring between the pin and the push rod is in a compressed state. When the pin hole at the bottom of the protective cover slides to the pin, the reset spring drives the top pin to push upward, so as to limit and fix the protective cover.

[0008] The present invention is further configured such that a threaded sleeve is symmetrically provided on the outer wall of the threaded rod, and the top of the threaded sleeve is connected to the push plate; a guide rod is provided on one side of the threaded rod in the machine tool body, and a positioning sleeve is slidably provided on the outer wall of the guide rod.

[0009] By adopting the above technical solution, the threaded sleeve on the outer wall will be driven to rotate under the action of the threaded rod. Since the top of the threaded sleeve is connected to the push plate, the threaded rod is specifically a bidirectional threaded rod, which can drive the two groups of push plates to slide inward. The push plate itself will be limited by the guide rod. In this process, the push plate can be effectively prevented from rotating on its own, further improving the overall sliding stability of the push plate and ensuring the cleaning of internal waste chips.

[0010] The present invention is further configured such that elastic airbags are provided on the inner sides of the threaded sleeve and the positioning sleeve, and the elastic airbags respectively wrap the outer walls of the threaded rod and the guide rod; the threaded sleeve and the positioning sleeve are both provided with nozzles inclined downward, and one end of the nozzle is connected to one end of the elastic airbag.

[0011] By adopting the above technical solution, an elastic airbag is set up to prevent the waste chips from falling onto the threads of the threaded rod when pushing the waste chips off, thereby ensuring the stability of the threaded sleeve sliding on the threaded rod. At the same time, when the protective cover is opened, the push plate pushes the waste chips into the collection groove at the bottom. In this process, both the threaded sleeve and the positioning sleeve will squeeze the elastic airbag, so that the internal gas will be ejected through the nozzle, thereby blowing off the waste chips on the elastic airbag and further improving the overall service life of the elastic airbag.

[0012] The present invention is further configured such that a slide groove is provided on the machine tool body at the protective cover, and a damping structure is provided between the slide groove and the protective cover.

[0013] By adopting the above technical solution, the sliding groove ensures the stability of the protective cover sliding on the machine tool body, preventing it from falling off during the sliding process. At the same time, the damping structure between the slide groove and the protective cover facilitates increasing the sliding friction of the protective cover, so that the protective cover will not slide easily on the machine tool body.

[0014] The present invention is further configured such that a return spring is connected between the latch and the push rod, a shift rod is provided on the outer wall of the latch, and an opening for the shift rod to slide up and down is provided on the machine tool body.

[0015] By adopting the above technical solution, when one end of the sliding rod is inserted into the bottom of the push rod, the push rod will be pushed upward. Since the top of the pin is limited by the protective cover, the return spring between the two will be in a compressed state during the lifting process of the push rod, which is convenient for the subsequent pin to be automatically inserted into the pin hole. At the same time, after the processing is completed, the staff will push the lever downward, and the lever will drive the pin to slide downward and out of the pin hole, thereby releasing the limit fixation of the protective cover.

[0016] The present invention is further configured such that a guide rail is provided inside the machine tool body, and a processing mechanism is slidably provided on the top of the guide rail.

[0017] By adopting the above technical solution, the guide rail will drive the internal processing mechanism slot to slide, and the workpiece will be processed under the action of the processing mechanism, so that its waste chips fall through the slot into the collection tank at the bottom.

[0018] The present invention is further configured such that a waste chip box is slidably provided in the machine tool body at the collecting trough.

[0019] By adopting the above technical solution, the pushed-down waste chips are collected uniformly through the waste chip box, which is convenient for the staff to deal with it later and reduces the collection burden of the staff. The sliding setting facilitates the replacement of different waste chip boxes and improves its overall practicality.

[0020] The present invention is further configured such that one end of the sliding rod and the top rod are both configured in a frustum shape.

[0021] By adopting the above technical solution, when the positioning sleeve drives the sliding rod to slide to one side, it is easy to get stuck into the bottom of the push rod, thereby realizing the push rod being pushed upward.

[0022] The present invention is further configured such that the transmission mechanism includes a driving disc, a transmission belt and a driven disc, one side of the driving disc is connected to the fixed gear through a transmission shaft, and one side of the driven disc is connected to the threaded rod.

[0023] By adopting the above technical solution, the fixed gear is driven to rotate under the action of the active disc, and the driven disc is driven to rotate by cooperating with the transmission belt. Since one side of the driven disc is connected to the threaded rod, the threaded rod will also rotate during the rotation of the fixed gear.

[0024] In summary, the present invention mainly has the following beneficial effects:

[0025] The present invention provides a fixed gear on the machine tool body. When the worker pulls the protective cover, the rack at the bottom will mesh with the fixed gear, causing the fixed gear to rotate. Through the action of the transmission mechanism, the internal push plate will also slide to both sides during the sliding process of the protective cover. After the processing is completed, the worker opens the protective cover. At this time, the fixed gear will rotate in the opposite direction, and the internal push plate will push the processed waste chips into the collection tank of the machine tool body, so that the processed waste chips can be uniformly collected and processed. In this process, the worker does not need to manually clean it up later, which effectively reduces the overall workload.

[0026] The present invention provides a sliding rod on one side of the positioning sleeve, and a push rod is elastically provided at the bottom of the latch, and one end of the push rod and the sliding rod are both arc-shaped. When the worker closes the protective cover, the internal push plate drives the positioning sleeve to slide to one side. During this process, the sliding rod is inserted into the machine tool body and pushes the push rod upward. Since the protective cover limits the top of the latch, the return spring between the latch and the push rod is in a compressed state. When the latch hole at the bottom of the protective cover slides to the latch, the return spring drives the top latch to push upward, thereby limiting and fixing the protective cover, thereby effectively preventing the protective cover from sliding to one side due to accidental contact by the worker or vibration of the machine tool during processing, and further improving the personal protection of the worker during processing.

[0027] The present invention provides elastic air bags on the outer walls of the threaded rod and the guide rod, which can prevent waste chips from falling onto the threads of the threaded rod when pushing them down, thereby ensuring the stability of the threaded sleeve sliding on the threaded rod. At the same time, when the protective cover is opened, the push plate pushes the waste chips into the collection groove at the bottom. During this process, the threaded sleeve and the positioning sleeve will squeeze the elastic air bag, so that the internal gas will be ejected through the nozzle, thereby blowing off the waste chips on the elastic air bag, further improving the overall service life of the elastic air bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front perspective view of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the processing mechanism of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the cleaning mechanism of the present invention;

[0031] Figure 4 is a rear perspective view of the present invention;

[0032] Figure 5 A top view of the present invention;

[0033] Figure 6 Schematic diagram of the gear rack structure of the present invention;

[0034] Figure 7 Schematic diagram of the elastic airbag structure of the present invention;

[0035] Figure 8 A perspective view of the gear rack of the present invention;

[0036] Figure 9 This is a schematic diagram of the latch structure of the present invention;

[0037] Figure 10 For the present invention Figure 3 A magnified view of the middle panel.

[0038] In the figure: 1. Machine tool body; 2. Protective cover; 3. Waste chip box; 4. Push plate; 5. Guide rail; 6. Processing mechanism; 7. Slide; 8. Slot; 9. Threaded sleeve; 10. Transmission mechanism; 11. Elastic airbag; 12. Guide rod; 13. Threaded rod; 14. Collecting trough; 15. Latch; 16. Fixed gear; 17. Rack; 18. Latch hole; 19. Nozzle; 20. Sliding rod; 21. Positioning sleeve; 22. Push rod; 23. Return spring; 24. Ejector rod. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0040] The following describes an embodiment of the present invention based on its overall structure.

[0041] A CNC machine tool protection mechanism, such as Figures 1-10As shown, it includes a machine tool body 1, a protective cover 2, a transmission mechanism 10, a processing mechanism 6 and a cleaning mechanism. A slide groove 7 is provided on the machine tool body 1 at the protective cover 2, and a damping structure is provided between the slide groove 7 and the protective cover 2. Under the action of the slide groove 7, the stability of the protective cover 2 sliding on the machine tool body 1 is guaranteed to prevent it from falling off during the sliding process. At the same time, the damping structure between the slide groove 7 and the protective cover 2 is convenient for increasing the sliding friction of the protective cover 2, so that the protective cover 2 will not slide easily on the machine tool body 1. The staff installs the workpiece to be processed on the three-jaw chuck in the machine tool and then closes the protective cover 2. Since a rack 17 is provided at the bottom of the protective cover 2 and a gear 17 is installed on the machine tool body 1, The fixed gear 16 cooperates with the strip 17, so when the protective cover 2 slides to one side, the fixed gear 16 on the machine tool body 1 will be driven to rotate, and under the action of the transmission mechanism 10, the threaded rod 13 in the machine tool body 1 will be driven to rotate accordingly. The outer wall of the threaded rod 13 is symmetrically provided with a threaded sleeve 9, and the top of the threaded sleeve 9 is connected to the push plate 4. A guide rod 12 is provided on one side of the threaded rod 13 in the machine tool body 1, and a positioning sleeve 21 is slidingly provided on the outer wall of the guide rod 12. Under the action of the threaded rod 13, the threaded sleeve 9 on the outer wall will be driven to rotate. Since the top of the threaded sleeve 9 is connected to the push plate 4, and the threaded rod 13 is specifically a bidirectional threaded rod, it is realized to drive the two groups of push plates 4 to slide to both sides. 2, the push plate 4 will be limited in position, and the push plate 4 can be effectively prevented from rotating in this process, thereby further improving the stability of the overall sliding of the push plate 4. At the same time, a sliding rod 20 that cooperates with the push rod 24 is installed on one side of the positioning sleeve 21, and a latch hole 18 that cooperates with the latch 15 is provided at the bottom of the protective cover 2. A return spring 23 is connected between the latch 15 and the push rod 24. When one end of the sliding rod 20 is inserted into the bottom of the push rod 24, the push rod 24 will be pushed upward. Since the top of the latch 15 is limited by the protective cover 2, the return spring 23 between the two will be in a compressed state during the lifting process of the push rod 24. When the latch hole 18 at the bottom of the protective cover 2 slides to the latch 15, the return spring 23 drives the top latch. 15 is pushed upward, so that the latch 15 is inserted into the latch hole 18, thereby limiting and fixing the protective cover 2, thereby effectively preventing the protective cover from sliding to one side due to accidental contact by the staff or vibration of the machine tool during the processing, further improving the personal protection of the staff during the processing, and facilitating the subsequent automatic insertion of the latch 15 into the latch hole 18. In addition, one end of the sliding rod 20 and the push rod 24 are both arranged in a frustum shape. When the positioning sleeve 21 drives the sliding rod 20 to slide to one side, it is convenient to snap into the bottom of the push rod 24, thereby pushing the push rod 24 upward, further improving the stability of the sliding rod 20. At the same time, a shift rod 22 is provided on the outer wall of the latch 15, and an opening for the shift rod 22 to slide up and down is provided on the machine tool body 1.After the processing is completed, the staff member pushes the lever 22 downward, which causes the lever 22 to drive the latch 15 to slide downward and disengage from the latch hole 18, thereby releasing the protective cover 2 from its position. The staff member can then directly push the protective cover 2 to slide to one side. During this process, the rack 17 drives the fixed gear 16 to rotate in the opposite direction, and the internal push plate 4 pushes the processed waste chips into the collection trough 14 of the machine tool body 1, realizing unified collection and processing of the processed waste chips. During this process, the staff member does not need to manually clean up the chips later, effectively reducing the overall workload.

[0042] See also Figure 3 、 Figure 5 and Figure 7 , the inner sides of the threaded sleeve 9 and the positioning sleeve 21 are both provided with elastic air bags 11, and the elastic air bags 11 respectively wrap the outer walls of the threaded rod 13 and the guide rod 12, and the threaded sleeve 9 and the positioning sleeve 21 are both provided with nozzles 19 tilted downward, and one end of the nozzle 19 is connected to one end of the elastic air bag 11. By setting the elastic air bag 11, when the waste chips are pushed down, the waste chips can be prevented from falling onto the threads of the threaded rod 13, ensuring the stability of the threaded sleeve 9 sliding on the threaded rod 13. At the same time, when the protective cover 2 is opened, the push plate 4 pushes the waste chips into the collection tank 14 at the bottom. In this process, the threaded sleeve 9 and the positioning sleeve 21 will squeeze the elastic air bag 11, so that the internal gas passes through The nozzle 19 sprays out, thereby blowing off the waste chips on the elastic airbag 11, further improving the overall service life of the elastic airbag 11. At the same time, an exhaust one-way valve is provided between the elastic airbag 11 and the nozzle 19, and an air intake one-way valve is provided at the bottom of the elastic airbag 11 itself. When the elastic airbag 11 is squeezed, the exhaust one-way valve opens and the air intake one-way valve closes, which is convenient for blowing and cleaning the waste chips on the outer wall of the elastic airbag 11. When the threaded sleeve 9 and the positioning sleeve 21 are reset and slide to both sides, the elastic airbag 11 is reset under its own action. At this time, the exhaust one-way valve is closed and the air intake one-way valve is opened to extract the external gas into the elastic airbag 11 for next use.

[0043] See also Figure 2 、 Figure 3 and Figure 5, a guide rail 5 is provided inside the machine tool body 1, and a processing mechanism 6 is slidingly provided on the top of the guide rail 5. Under the action of the guide rail 5, the internal processing mechanism 6 will be driven to slide toward the slot 8, and the workpiece is processed under the action of the processing mechanism 6, so that its waste chips fall into the collection groove 14 at the bottom through the slot 8. A waste chip box 3 is slidingly provided at the collection groove 14 in the machine tool body 1, and the pushed-down waste chips are uniformly collected by the waste chip box 3, which is convenient for the staff to process them later and reduces the collection burden of the staff. The sliding setting facilitates the replacement of different waste chip boxes 3, thereby improving its overall practicality. The specific working principles of the guide rail 5 and the processing mechanism 6 belong to the prior art for those skilled in the art, and therefore are not elaborated in this application.

[0044] See also Figure 4 、 Figure 5 and Figure 8 The transmission mechanism 10 includes a driving disc, a transmission belt and a driven disc. One side of the driving disc is connected to the fixed gear 16 through a transmission shaft, and one side of the driven disc is connected to the threaded rod 13. Under the action of the driving disc, the fixed gear 16 is driven to rotate, and the driven disc is driven to rotate by cooperating with the transmission belt. Since one side of the driven disc is connected to the threaded rod 13, the threaded rod 13 will also rotate during the rotation of the fixed gear 16.

[0045] The working principle of the present invention is as follows: when in use, the staff pulls the protective cover 2 to slide to one side, and the rack 17 at the bottom of the protective cover 2 engages with the fixed gear 16, so that the transmission mechanism 10 on one side of the machine tool body 1 rotates, thereby driving the threaded rod 13 to rotate. During this process, the push plate 4 in the machine tool body 1 will slide to both sides, and at the same time, a sliding rod 20 is provided at one end of the positioning sleeve 21. The sliding rod 20 pushes up the push rod 24. At this time, the pin 15 is in a compressed state on the machine tool body 1. As the protective cover 2 continues to slide, the pin hole 18 is exposed. When at the latch 15, the force of the return spring 23 causes the latch 15 to be inserted into the latch hole 18, thereby limiting and fixing the protective cover 2 to prevent it from sliding during the processing. At the same time, after the subsequent processing is completed, the staff releases the limit on the protective cover 2 by toggling the lever 22. At this time, the staff slides the protective cover 2 to one side, and the internal fixed gear 16 will reverse under the action of the rack 17, so that the push plate 4 slides inward, pushing the waste chips left by the processing into the collection groove 14 at the bottom, so that the waste chips can be collected uniformly.

[0046] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A CNC machine tool protection mechanism, comprising a machine tool body and a protective cover, characterized in that: A rack is provided at the bottom of the protective cover, and a fixed gear cooperating with the rack is installed on the machine tool body, one end of the fixed gear is connected to a transmission mechanism, and the other end of the transmission mechanism is connected to a threaded rod, a push plate cooperating with the threaded rod is symmetrically slidably provided in the machine tool body, and a collecting trough is provided at the bottom of the machine tool body, a latch is elastically provided on the machine tool body, and a push rod is connected to the bottom of the latch, a positioning sleeve is provided at the bottom of the push plate, and a sliding rod cooperating with the push rod is installed on one side of the positioning sleeve, and a latch hole cooperating with the latch is provided at the bottom of the protective cover; The outer wall of the threaded rod is symmetrically provided with a threaded sleeve, and the top of the threaded sleeve is connected to the push plate. A guide rod is provided on one side of the threaded rod in the machine tool body, and a positioning sleeve is slidably provided on the outer wall of the guide rod. Elastic air bags are provided on the inner sides of the threaded sleeve and the positioning sleeve, and the elastic air bags wrap the outer walls of the threaded rod and the guide rod respectively. The threaded sleeve and the positioning sleeve are both provided with a nozzle inclined downward, and one end of the nozzle is connected to one end of the elastic air bag. A return spring is connected between the pin and the push rod, and a shift rod is provided on the outer wall of the pin. An opening for the shift rod to slide up and down is provided on the machine tool body.

2. A CNC machine tool protection mechanism according to claim 1, characterized in that: A slide groove is provided on the machine tool body at the protective cover, and a damping structure is provided between the slide groove and the protective cover.

3. The CNC machine tool protection mechanism according to claim 1, characterized in that: A guide rail is provided inside the machine tool body, and a processing mechanism is slidably provided on the top of the guide rail.

4. The CNC machine tool protection mechanism according to claim 1, characterized in that: A waste chip box is slidably arranged in the collecting trough in the machine tool body.

5. The CNC machine tool protection mechanism according to claim 1, characterized in that: One end of the sliding rod and the top rod are both arranged in a frustum shape.

6. The CNC machine tool protection mechanism according to claim 1, characterized in that: The transmission mechanism includes a driving disc, a transmission belt and a driven disc. One side of the driving disc is connected to the fixed gear through a transmission shaft, and one side of the driven disc is connected to the threaded rod.

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