Anti-collision buffer device for CNC machine tools

Abstract

The utility model discloses an anti-collision buffer device for a CNC machine tool, comprising a protective door and a buffer component for protecting the protective door, the buffer component comprising a connecting block connected to the protective door, a mounting plate respectively connected to the four sides of the connecting block, a bolt connected to the mounting plate, an active cavity opened on the connecting block, a movable plate arranged in the active cavity, a buffer rod connected to one side of the movable plate, and a fixed plate connected to one end of the buffer rod. The utility model solves the problem that the current CNC machine tool closes the protective door to ensure safety by arranging the protective door and the buffer component. Although the CNC machine tool can provide buffer protection for the processing tool head when in use, during operation, if the tool head accidentally falls off, the tool head will collide inside the CNC machine tool and hit the protective door, which is easy to cause damage to the protective door. The cost of replacing the protective door is relatively high, which leads to the problem of poor practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to an anti-collision buffer device for numerically controlled machine tools. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool. It is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, input them into the CNC device through information carriers, and after calculation and processing, the CNC device sends out various control signals to control the movement of the machine tool and automatically process parts according to the shape and size required by the drawing.

[0003] The existing patent CN213795516U discloses an anti-collision device for a CNC machine tool, including a CNC machine tool body, a buffer spring and a limit end cover, wherein a travel slide is arranged at the inner rear end of the CNC machine tool body, and a processing tool holder is connected to the outer side of the travel slide, and a processing tool head is installed at the lower end of the processing tool holder. The anti-collision device for a CNC machine tool is provided with a buffer spring, which is evenly distributed at the lower outer side of the limit pillar. The limit pillar and the connecting carrier plate that are vertically fixedly connected can ensure the accuracy of the position and the firmness of the connection between them. The buffer spring arranged at the lower outer side of the limit pillar cooperates with the connecting fixed block connected to the upper outer side of the limit pillar, so that the processing tool holder has a good buffering effect during the descent process, and avoids the situation that the processing tool head collides with the workpiece due to the descent too fast and is damaged. The limit pillar and the limit hole that are slidably connected ensure the smoothness of the lifting process of the processing tool holder, and avoid the situation of jamming.

[0004] In order to ensure safety, current CNC machine tools will close the protective door. Although the CNC machine tool can provide buffer protection for the processing cutter head when in use, if the cutter head accidentally falls off during operation, the cutter head will collide inside the CNC machine tool and hit the protective door, which can easily cause damage to the protective door. The cost of replacing the protective door is relatively high, resulting in poor practicality. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-collision buffer device for a CNC machine tool, so as to solve the problem proposed in the above background technology that the current CNC machine tools will close the protective door to ensure safety. Although the CNC machine tool can provide buffer protection for the processing tool head when in use, during operation, if the tool head accidentally falls off, the tool head will collide inside the CNC machine tool and hit the protective door, which may easily cause damage to the protective door. The cost of replacing the protective door is relatively high, resulting in poor practicality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-collision buffer device for a CNC machine tool, comprising a protective door and a buffer component for protecting the protective door, the buffer component comprising a connecting block connected to the protective door, a mounting plate respectively connected to the four sides of the connecting block, a bolt connected to the mounting plate, an active cavity opened on the connecting block, a movable plate arranged in the active cavity, a buffer rod connected to one side of the movable plate, a fixed plate connected to one end of the buffer rod, a buffer plate connected to the fixed plate, a first spring sleeved on the outside of the buffer rod, a connecting component for quickly replacing the buffer plate, and an auxiliary component for improving the protection effect, the buffer rod passes through the active cavity and is slidably connected to the connecting block, and the two ends of the first spring are respectively fixedly connected to the fixed plate and the connecting block.

[0007] Preferably, the connecting parts include recesses respectively opened on both sides of the fixed plate, sockets respectively opened on both sides of the buffer plate, a slide plate connected to the recess, a positioning rod connected to one side of the slide plate, a sliding rod connected to the other side of the slide plate, a pulling plate connected to one end of the sliding rod, a positioning port opened on one side of the socket, and a second spring sleeved on the outside of the sliding rod, the sliding rod passes through the recess and is slidably connected to the fixed plate, and the positioning rod is plugged into the positioning port.

[0008] Preferably, the auxiliary component includes sliding grooves respectively opened on both sides of the connecting block, a slider connected to the sliding groove, a hinged rod connected to the slider, and a third spring connected to one side of the slider, the two ends of the hinged rod are respectively hinged to the slider and the fixed plate, and the slider is slidably connected to the sliding groove.

[0009] Preferably, guide rods are fixedly connected to both sides of the movable cavity, a fourth spring is sleeved on the outer side of the guide rods, and the guide rods penetrate the movable plate and are slidably connected to the movable plate.

[0010] Preferably, a limiting groove is provided on one side of the recess, a limiting block is fixedly connected to one side of the slide plate, and the limiting block is slidably connected to the limiting groove.

[0011] Preferably, positioning grooves are respectively provided on both sides of the buffer plate, and positioning blocks are respectively fixedly connected to both sides of the fixing plate, and the positioning blocks are plugged into the positioning grooves.

[0012] Preferably, a rubber pad is provided on the front side of the buffer plate, and the rubber pad is adhered to the buffer plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting the protective door and the buffer component, the connection block can be connected and fixed to the protective door by bolts, which is convenient for subsequent disassembly and replacement of the connection block. The cutter head and the like can be protected by the buffer plate. The collision of the cutter head with the buffer plate can deform the first spring, which can buffer the impact force, thereby protecting the protective door and preventing the protective door from being directly damaged by the impact. Replacing the damaged protective door will increase the use cost, thereby greatly improving the practicality of the device;

[0015] 2. By providing a connecting component, the skateboard can be inserted into the socket, and by utilizing the elasticity of the second spring, the positioning rod on one side of the skateboard can be pushed into the positioning port, so that the buffer plate and the fixed plate can be connected and fixed. When the buffer plate is damaged in the later stage, there is no need to replace the entire device. Only the pull plate needs to be pulled to disengage the positioning rod from the positioning port, and the buffer plate can be quickly removed from the fixed plate and replaced with a new one, which can improve efficiency, facilitate maintenance of the entire device, and further improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure provided by the utility model;

[0017] Figure 2 A front view provided for the utility model;

[0018] Figure 3 The utility model provides Figure 2 The three-dimensional cross-section view at AA in the middle;

[0019] Figure 4 The utility model provides Figure 3 Enlarged view of point B in the middle.

[0020] In the figure: 1, protective door; 21, connecting block; 22, mounting plate; 23, bolt; 24, movable cavity; 25, movable plate; 26, buffer rod; 27, fixed plate; 28, buffer plate; 29, first spring; 31, notch; 32, socket; 33, slide plate; 34, positioning rod; 35, slide bar; 36, pull plate; 37, positioning port; 38, second spring; 41, slide groove; 42, slider; 43, hinged rod; 44, third spring; 51, guide rod; 52, fourth spring; 61, limit groove; 62, limit block; 71, positioning groove; 72, positioning block; 281, rubber pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 as well as Figure 3The utility model provides a technical solution: an anti-collision buffer device for a CNC machine tool, comprising a protective door 1 and a buffer component for protecting the protective door 1, the buffer component comprising a connecting block 21 connected to the protective door 1, a mounting plate 22 respectively connected to the four sides of the connecting block 21, a bolt 23 connected to the mounting plate 22, an active cavity 24 opened on the connecting block 21, a moving plate 25 arranged in the active cavity 24, a buffer rod 26 connected to one side of the moving plate 25, a fixed plate 27 connected to one end of the buffer rod 26, a buffer plate 28 connected to the fixed plate 27, a first spring 29 sleeved on the outside of the buffer rod 26, and a connecting member 23 for quickly replacing the buffer plate 28. The protective door 1 is provided with a plurality of protective components and auxiliary components for improving the protective effect. The buffer rod 26 passes through the movable cavity 24 and is slidably connected to the connecting block 21. The two ends of the first spring 29 are respectively fixedly connected to the fixing plate 27 and the connecting block 21. The movable plate 25 is slidably connected to the movable cavity 24. The connecting block 21 can be connected and fixed to the protective door 1 by the bolts 23 and the mounting plate 22. The protective door 1 can be protected by the buffer plate 28. After the blade head collides with the buffer plate 28, the buffer plate 28 can be pushed to drive the first spring 29 to deform. The elasticity of the first spring 29 can be used to buffer the collision, thereby preventing the protective door 1 from being directly hit, and preventing the protective door 1 from being damaged. The auxiliary components include slide grooves 41 respectively provided on both sides of the connecting block 21, sliders 42 connected to the slide grooves 41, hinged rods 43 connected to the sliders 42, and third springs 44 connected to one side of the sliders 42. Both ends of the hinged rods 43 are hinged to the sliders 42 and the fixed plates 27 respectively. The sliders 42 are slidably connected to the slide grooves 41. The buffer plates 28 can drive the fixed plates 27 to move. The movement of the fixed plates 27 can enable the hinged rods 43 to push the sliders 42 to slide in the slide grooves 41. The sliders 42 can squeeze the third springs 44 to deform them. The elasticity of the third springs 44 can be used to further improve the protective performance of the protective door 1. The sides are respectively fixedly connected with guide rods 51, and the outer side of the guide rods 51 is sleeved with a fourth spring 52, the guide rods 51 penetrate the movable plate 25 and are slidably connected to the movable plate 25, and the two ends of the fourth spring 52 are respectively fixedly connected to the movable plate 25 and the inner wall of the movable cavity 24, and the movable plate 25 can squeeze the fourth spring 52 to deform when it moves. The guide rods 51 can guide the fourth spring 52 to prevent it from tilting. The elasticity of the fourth spring 52 can further improve the protective performance of the protective door 1. A rubber pad 281 is provided on the front of the buffer plate 28, and the rubber pad 281 is adhered to the buffer plate 28. The rubber pad 281 can protect the buffer plate 28 to a certain extent and improve its service life.

[0023] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4The connecting parts include recesses 31 respectively opened on both sides of the fixed plate 27, sockets 32 respectively opened on both sides of the buffer plate 28, a slide plate 33 connected to the recess 31, a positioning rod 34 connected to one side of the slide plate 33, a sliding rod 35 connected to the other side of the slide plate 33, a pulling plate 36 connected to one end of the sliding rod 35, a positioning hole 37 opened on one side of the socket 32, and a second spring 38 sleeved on the outside of the sliding rod 35. The sliding rod 35 passes through the recess 31 and is slidably connected to the fixed plate 27. The positioning rod 34 is plugged into the positioning hole 37. The two ends of the second spring 38 are fixedly connected to the slide plate 33 and the inner wall of the recess 31 respectively. By pulling the pulling plate 36, the sliding rod 35 and the slide plate 33 can be driven to move, thereby causing the second spring 38 to deform and at the same time driving the positioning rod 34 to move. The buffer plate 28 contacts the fixed plate 27, and the slide plate 33 can be inserted into the socket 32, the second spring 38 is reset so that the positioning rod 34 can be inserted into the positioning port 37, and the buffer plate 28 and the fixed plate 27 can be connected and fixed, so that the buffer plate 28 can be detachable and replaced, which is convenient for replacing the damaged buffer plate 28. A limiting groove 61 is provided on one side of the recess 31, and a limiting block 62 is fixedly connected to one side of the slide plate 33. The limiting block 62 is slidably connected to the limiting groove 61. The slide plate 33 can move the limiting block 62, and then the moving distance of the slide plate 33 can be limited, so as to prevent the second spring 38 from being damaged by excessive deformation. Positioning grooves 71 are respectively provided on both sides of the buffer plate 28, and positioning blocks 72 are respectively fixedly connected on both sides of the fixed plate 27. The positioning block 72 is plugged into the positioning groove 71. When the buffer plate 28 is installed, the positioning block 72 can be inserted into the positioning groove 71, and the buffer plate 28 can be laterally limited to prevent it from moving laterally.

[0024] Working principle: When working, pull the pull plate 36, the pull plate 36 can drive the sliding rod 35 to move, and the movement of the sliding rod 35 can drive the sliding plate 33 to move. At the same time, the second spring 38 is deformed by force, and the sliding plate 33 can drive the positioning rod 34 to move, and then align the positioning groove 71 on the buffer plate 28 with the positioning block 72, so that the positioning block 72 is inserted into the positioning groove 71. At this time, the positioning rod 34 is aligned with the positioning port 37, and the pull plate 36 is released. The second spring 38 is reset to push the positioning rod 34 to insert into the positioning port 37, and the buffer plate 28 can be connected with the fixed plate 27, and then the connecting block 21 is fixed to the protective door 1 through the mounting plate 22 and the bolt 23. When the buffer plate 28 is collided, the buffer plate 28 can push the fixed plate 27 to move, and the movement of the fixed plate 27 can drive the buffer rod 26 and the hinge rod 43 to move. When the first spring 29 is squeezed and deformed, the hinged rod 43 can drive the slider 42 to move, the slider 42 can squeeze the third spring 44 to deform, the buffer rod 26 can drive the movable plate 25 to move, and the movement of the movable plate 25 can squeeze the fourth spring 52 to deform it, thereby buffering the impact force, protecting the protective door 1, and avoiding the protective door 1 from being directly damaged by collision and then replaced, which can save costs. When the buffer plate 28 is damaged after long-term use, the pull plate 36 can be pulled again to make the positioning rod 34 disengage from the positioning port 37, and then the buffer plate 28 can be removed from the fixed plate 27, and then replaced with a new buffer plate 28, which is relatively convenient for maintenance. The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-collision buffer device for a numerically controlled machine tool, comprising a protective door (1) and a buffer component for protecting the protective door (1), characterized in that: The buffer component comprises a connecting block (21) connected to the protective door (1), a mounting plate (22) respectively connected to the four sides of the connecting block (21), a bolt (23) connected to the mounting plate (22), an active cavity (24) opened on the connecting block (21), a movable plate (25) arranged in the active cavity (24), a buffer rod (26) connected to one side of the movable plate (25), a fixed plate (27) connected to one end of the buffer rod (26), a buffer plate (28) connected to the fixed plate (27), a first spring (29) sleeved on the outside of the buffer rod (26), a connecting component for quickly replacing the buffer plate (28), and an auxiliary component for improving the protective effect. The buffer rod (26) passes through the active cavity (24) and is slidably connected to the connecting block (21), and the two ends of the first spring (29) are respectively fixedly connected to the fixed plate (27) and the connecting block (21).

2. The anti-collision buffer device for a CNC machine tool according to claim 1, characterized in that: The connecting component comprises recesses (31) respectively arranged on both sides of the fixing plate (27), sockets (32) respectively arranged on both sides of the buffer plate (28) and connected thereto, a slide plate (33) connected to the recesses (31), a positioning rod (34) connected to one side of the slide plate (33), a sliding rod (35) connected to the other side of the sliding rod (33), a pulling plate (36) connected to one end of the sliding rod (35), a positioning port (37) arranged on one side of the socket (32), and a second spring (38) sleeved on the outside of the sliding rod (35); the sliding rod (35) passes through the recesses (31) and is slidably connected to the fixing plate (27); the positioning rod (34) is plugged into the positioning port (37).

3. The anti-collision buffer device for a CNC machine tool according to claim 1, characterized in that: The auxiliary component comprises a slide groove (41) respectively arranged on both sides of the connection block (21), a slider (42) connected to the slide groove (41), a hinge rod (43) connected to the slider (42), and a third spring (44) connected to one side of the slider (42); the two ends of the hinge rod (43) are respectively hinged to the slider (42) and the fixed plate (27); and the slider (42) is slidably connected to the slide groove (41).

4. The anti-collision buffer device for a CNC machine tool according to claim 1, characterized in that: Guide rods (51) are fixedly connected to both sides of the movable cavity (24), and a fourth spring (52) is sleeved on the outer side of the guide rod (51). The guide rod (51) penetrates the movable plate (25) and is slidably connected to the movable plate (25).

5. The anti-collision buffer device for a CNC machine tool according to claim 2, characterized in that: A limiting groove (61) is provided on one side of the recess (31), a limiting block (62) is fixedly connected to one side of the slide plate (33), and the limiting block (62) is slidably connected to the limiting groove (61).

6. The anti-collision buffer device for a CNC machine tool according to claim 1, characterized in that: Positioning grooves (71) are respectively provided on both sides of the buffer plate (28), and positioning blocks (72) are respectively fixedly connected to both sides of the fixing plate (27), and the positioning blocks (72) are plugged into the positioning grooves (71).

7. The anti-collision buffer device for a CNC machine tool according to claim 1, characterized in that: A rubber pad (281) is provided on the front side of the buffer plate (28), and the rubber pad (281) is bonded to the buffer plate (28).

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