Square tube inner wall polishing machine

Abstract

The utility model discloses a square tube inner wall polishing machine, belongs to the technical field of machining equipment, and is used for providing equipment capable of efficiently polishing the inner wall of a square tube, the square tube inner wall polishing machine comprises a rack, a driving mechanism and a clamping mechanism are arranged on the rack, the clamping mechanism is suitable for clamping a square tube body, and the driving mechanism comprises an air pump; the input end and the output end of the air pump are connected with a pair of limiting seats through air pipes respectively, the two limiting seats are matched with the two ends of the square pipe body respectively, and one limiting seat is suitable for pumping air from the square pipe body; the other limiting seat is suitable for injecting gas into the square pipe body, and a polishing block is arranged between the two limiting seats and suitable for being located in the square pipe body. The polishing block capable of moving in the square tube is arranged, the polishing block is driven by air pressure to move in the square tube, and the inner wall of the square tube can be efficiently polished through reciprocating friction; and through the adjustable design of the clamping mechanism and the limiting seat, the polishing machine has general applicability to square pipes of different sizes, and the use flexibility is higher.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical processing equipment, and in particular to a square tube inner wall polishing machine. Background Art

[0002] After the square tube is manufactured, it needs to be polished according to the actual application requirements. If only the outer surface of the square tube is polished, it is feasible to use existing polishing equipment. However, if the inner wall of the square tube needs to be polished, the existing polishing equipment will be difficult to handle. Because most of the inner wall of the square tube is hidden, it will be very time-consuming and labor-intensive if polishing is done manually. Summary of the invention

[0003] The purpose of the present application is to provide a device that can efficiently polish the inner wall of a square tube.

[0004] To achieve the above objectives, the present application provides a square tube inner wall polishing machine: it includes a frame, on which a driving mechanism and a clamping mechanism are provided, the clamping mechanism is suitable for clamping the square tube body, the driving mechanism includes an air pump, the input and output ends of the air pump are respectively connected to a pair of limit seats through air pipes, the two limit seats are respectively matched with the two ends of the square tube body, one limit seat is suitable for extracting air from the square tube body; the other limit seat is suitable for injecting air into the square tube body, a polishing block is provided between the two limit seats, and the polishing block is suitable for being located inside the square tube body to realize the polishing operation on the inner wall of the square tube.

[0005] Preferably, the frame includes a workbench, the upper surface of the workbench has a plurality of baffles, guide rails are fixedly connected between the baffles, and the limit seat includes a slider, the slider has a guide hole suitable for cooperating with the guide rail to form a sliding pair to limit the movement freedom of the limit seat.

[0006] Preferably, the workbench is provided with a through groove below the guide rail, the lower surface of the workbench is provided with a tooth groove, and the bottom of the slider is provided with a locking piece suitable for cooperating with the tooth groove, so as to limit the position of the limit seat and prevent the limit seat from moving due to the influence of air pressure.

[0007] Preferably, a sliding rod is fixedly connected to the lower surface of the slider, and the locking member includes a locking pin, both ends of which cooperate with the tooth grooves. The locking pin is also provided with a sliding hole, which is suitable for cooperating with the sliding rod to form a sliding pair. The lower end of the sliding rod passes through the sliding hole and is fixedly connected to a limiting ring. The sliding rod outer sleeve is provided with a spring located between the limiting ring and the locking pin, which is used to provide the locking member with a pre-pressure to lock the limiting seat.

[0008] Preferably, an extension rod is fixedly connected to the lower surface of the locking pin, and a handle is fixedly connected to the lower end of the extension rod, so that the staff can unlock the locking member and adjust the position of the limit seat conveniently.

[0009] As a preference, the bottom surface of the slider is provided with a pipe connection end, suitable for connecting with the air pipe; the side of the slider is provided with a joint end, suitable for embedding into the square tube body from the end, for sealing the open end of the square tube to ensure air tightness.

[0010] As a preferred embodiment, the workbench is provided with a configuration hole, and the clamping mechanism includes a longitudinal cylinder fixedly connected to the configuration hole, a longitudinal telescopic rod movably connected in the longitudinal cylinder, a support plate fixedly connected to the upper end of the longitudinal telescopic rod, a transverse cylinder fixedly connected to the support plate, a transverse telescopic rod movably connected in the transverse cylinder, and a clamping plate fixedly connected to the ends of the transverse telescopic rod for clamping the opposite sides of the square tube.

[0011] As a preferred embodiment, a friction pad is provided on the side of the clamping plate facing the square tube body, and brackets are fixedly connected to both ends of the workbench to ensure the stability of the workbench.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By arranging a polishing block that can move inside the square tube, the polishing block is driven by air pressure to move inside the square tube, and the inner wall of the square tube can be polished efficiently through reciprocating friction;

[0014] (2) By making the clamping mechanism and the limit seat adjustable, the polishing machine is generally applicable to square tubes of different sizes, with a wider range of processable objects and higher flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the first stereoscopic schematic diagram of the overall structure of the square tube inner wall polishing machine.

[0016] Figure 2 This is the second stereoscopic schematic diagram of the overall structure of the square tube inner wall polishing machine.

[0017] Figure 3 It is a schematic diagram of the connection between the driving mechanism and clamping mechanism of the square tube inner wall polishing machine and the workbench.

[0018] Figure 4 It is a schematic diagram of the cooperation between the locking part and the limit seat of the square tube inner wall polishing machine.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the locking part of the square tube inner wall polishing machine.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the square tube inner wall polishing machine.

[0021] Figure 7 It is a three-dimensional structural cross-sectional view of the workbench of the square tube inner wall polishing machine.

[0022] Figure 8 It is a three-dimensional structural cross-sectional view of the coordination between the polishing block of the square tube inner wall polishing machine, the square tube body and the limiting seat.

[0023] In the figure: 1, frame; 110, workbench; 111, baffle; 112, guide rail; 113, through groove; 114, tooth groove; 115, configuration hole; 102, bracket; 2, driving mechanism; 201, air pump; 202, air pipe; 230, limit seat; 231, slider; 232, guide hole; 233, pipe connection end; 234, joint end; 235, slide rod; 236, limit ring; 240, locking member; 241, locking pin; 242, slide hole; 243, extension rod; 244, handle; 205, spring; 3, clamping mechanism; 301, longitudinal cylinder; 302, longitudinal telescopic rod; 303, support plate; 304, transverse cylinder; 305, transverse telescopic rod; 306, clamping plate; 307, friction pad; 4, square tube; 5, polishing block. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0028] like Figure 1-8 The square tube inner wall polishing machine shown includes a fixed frame 1, on which a driving mechanism 2 is provided for driving the polishing components, the driving mechanism 2 includes an air pump 201 as a power source, the input and output ends of the air pump 201 are respectively connected to a pair of limit seats 230 through air pipes 202, because the input and output ends of the air pump 201 often need to be swapped, so the two groups of air pipes 202 and the limit seats 230 are not distinguished in terms of function and name, the specific structure of the frame 1 includes a horizontally arranged workbench 110, and the two ends of the workbench 110 are also fixedly connected with brackets 102, the two brackets 102 are suitable for direct contact with the ground, and are used to keep the workbench 110 in a stable state, and the upper surface of the workbench 110 has a plurality of baffles 111, and the baffles 111 are obviously protruding and perpendicular to the workbench The upper surface of the workbench 110 is fixedly connected with a guide rail 112 between the baffles 111. The guide rail 112 is also parallel to the upper surface of the workbench 110, and the extension direction of the guide rail 112 is consistent with the length direction of the workbench 110. Two guide rails 112 are usually set between the two baffles 111. The specific structure of the limit seat 230 includes a slider 231. The slider 231 is provided with a guide hole 232. The number and position of the guide holes 232 correspond to the guide rail 112. The two guide holes 232 and the two guide rails 112 respectively cooperate to form a sliding pair, which can effectively limit the movement freedom of the slider 231 and can only perform translational movement along the length direction of the guide rail 112. The bottom surface of the slider 231 is provided with a pipe connection end 233 for connecting with the air pipe 202, so as to obtain air pressure to drive the components used to achieve polishing.

[0029] The workbench 110 is provided with a through groove 113 below the guide rail 112. In the present embodiment, there are two through grooves 113 and four baffles 111, so each through groove 113 is located between the two baffles 111 and passes through the upper and lower surfaces of the workbench 110. The lower surface of the workbench 110 is provided with a tooth groove 114. There are several tooth grooves 114, which are arranged equidistantly along the length direction of the through groove 113. Usually, each tooth groove 114 extends to the inner wall of the through groove 113, which is convenient for cutting. A locking member 240 is provided at the bottom of the slider 231 for cooperating with the tooth groove 114, thereby limiting the position of the limit seat 230 and ensuring stability during the polishing process.

[0030] In order to realize the above-mentioned function of the locking member 240, it is necessary to fix a longitudinal sliding rod 235 on the lower surface of the slider 231. The sliding rod 235 is usually provided with two, and the specific structure of the locking member 240 includes a horizontal locking pin 241. The locking pin 241 is also provided with sliding holes 242 corresponding in number and position to the sliding rod 235, which just cooperate with the sliding rod 235 to form a sliding pair. Since the angle of the locking pin 241 cannot be changed, the two ends of the locking pin 241 can cooperate with the flush tooth groove 114. After cooperation, the position of the limit seat 230 relative to the workbench 110 will be fixed. Even if it is subjected to the reverse effect of air pressure, the limit seat 230 will not move. The lower end of each sliding rod 235 will be fixedly connected to the limit ring 236 after passing through the corresponding sliding hole 242. The diameter of the limiting ring 236 is significantly larger than the diameter of the sliding rod 235. The sliding rod 235 is outerly provided with a spring 205 located between the limiting ring 236 and the locking pin 241. The lower end of the spring 205 presses against the limiting ring 236 and the upper end presses against the locking pin 241, providing the entire locking member 240 with a restoring elastic force with an upward trend, thereby maintaining the engagement state of the locking pin 241 and the tooth groove 114. The lower surface of the locking pin 241 is fixedly connected to an extension rod 243, and the extension rod 243 is usually also longitudinally arranged and kept parallel to the sliding rod 235. The lower end of the extension rod 243 is fixedly connected to a handle 244 for the convenience of the staff to hold, thereby applying a downward pulling force to the entire locking member 240 to overcome the elastic force of the spring 205, thereby achieving the unlocking of the limiting seat 230.

[0031] The two limit seats 230 cooperate with the two ends of the square tube body 4 respectively, one limit seat 230 is used to extract air from the square tube body 4; the other limit seat 230 is used to inject air into the square tube body 4, and the functions of the two will be rotated every period of time, which can be achieved by alternating the forward and reverse working of the air pump 201. A joint end 234 is provided on the side of the slider 231, and the size is slightly smaller than the caliber of the square tube body 4, which is just embedded in the square tube body 4 from the end of the square tube body 4. A polishing block 5 is provided between the two limit seats 230. The outer surface of the polishing block 5 is hard gravel. The polishing block 5 is actually located in the square tube body 4. The outer surface of the polishing block 5 contacts the inner wall of the square tube body 4. Under the push of air pressure, it moves back and forth in the square tube body 4, from one end to the other end, and then back from the other end. In this way, the burrs and uneven surfaces in the square tube body 4 can be polished smooth.

[0032] The frame 1 is also provided with a clamping mechanism 3, which is used to clamp the square tube body 4 that needs to be polished. The workbench 110 is provided with a configuration hole 115. There are usually a plurality of configuration holes 115, all of which are located between the two through grooves 113. The number of the clamping mechanism 3 corresponds to the configuration holes 115. The clamping mechanism 3 includes a longitudinal cylinder 301 fixedly connected to the configuration hole 115. The longitudinal cylinder 301 is in a vertical direction. A longitudinal telescopic rod 302 is movably connected to the longitudinal cylinder 301. The combination of the longitudinal telescopic rod 302 and the longitudinal cylinder 301 is actually an electric telescopic rod with a high telescopic distance control accuracy, which is used to achieve precise adjustment of the horizontal height of the square tube body 4. The upper end of the longitudinal telescopic rod 302 is fixedly connected to a support plate 303 for supporting the bottom surface of the square tube body 4. A horizontal transverse cylinder 304 is fixedly connected to the plate 303, and a transverse telescopic rod 305 is movably connected inside the transverse cylinder 304. The combination of the transverse telescopic rod 305 and the transverse cylinder 304 is actually a cylinder, which can respond to actions quickly and has its own buffer. In normal circumstances, the transverse cylinder 304 is bidirectional and cooperates with two colinear transverse telescopic rods 305. The end of each transverse telescopic rod 305 is fixedly connected with a clamping plate 306, and the two clamping plates 306 respectively clamp the opposite sides of the square tube body 4. A friction pad 307 is provided on the side of the clamping plate 306 facing the square tube body 4, which is used to increase the contact friction between the clamping plate 306 and the square tube body 4, which can effectively suppress the movement of the square tube body 4 as the polishing object, thereby improving the stability of the polishing object during the polishing process.

[0033] Working principle: Before using the polishing machine, first adjust the distance between the two limit seats 230 according to the length of the square tube body 4 to be polished, so that the distance between the two is greater than the length of the square tube body 4, and then place the square tube body 4 on the clamping mechanism 3, and the horizontal telescopic rod 305 contracts to drive the clamping plate 306 to clamp the square tube body 4, and then the longitudinal telescopic rod 302 adjusts the horizontal height of the horizontal square tube body 4 so that the two ends of the square tube body 4 are aligned with the joint ends 234 on the limit seat 230, and then apply polishing agent to the polishing block 5 and push it into the square tube body 4, and then pull down the handle 244 to release the lock of the limit seat 230 by the locking member 240, and slide the limit seat 230 to embed the joint end 234 into the square tube body 4, so that both ends of the square tube body 4 are blocked, and start the air pump. 201, through the air pipe 202, one limit seat 230 is used to evacuate air from the square tube body 4, and the other limit seat 230 is used to inflate air into the square tube body 4. The polishing block 5 located in the square tube body 4 moves along the inner embedding of the square tube body 4 under the action of the air pressure difference, and polishes the rough part inside the square tube body 4. When the polishing block 5 moves to one end limit, the air pump 201 will work in the reverse direction to make the polishing block 5 move in the reverse direction. After multiple reciprocating movements, the inner wall of the square tube body 4 as the polished object can become very smooth. After the polishing is completed, the two limit seats 230 are separated from the ends of the square tube body 4, and the square tube body 4 can be removed from the clamping mechanism 3, and then the inner cavity of the square tube body 4 is rinsed with clean water, which can not only wash away the polishing agent, but also flush out the polishing block 5 for the next round of polishing.

[0034] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A square tube inner wall polishing machine, characterized in that: The invention comprises a frame (1), wherein a driving mechanism (2) and a clamping mechanism (3) are arranged on the frame (1), wherein the clamping mechanism (3) is suitable for clamping a square tube body (4), wherein the driving mechanism (2) comprises an air pump (201), wherein the input and output ends of the air pump (201) are respectively connected to a pair of limit seats (230) through air pipes (202), wherein the two limit seats (230) are respectively matched with the two ends of the square tube body (4), wherein one of the limit seats (230) is suitable for extracting air from the square tube body (4), and the other limit seat (230) is suitable for injecting air into the square tube body (4), and a polishing block (5) is arranged between the two limit seats (230), wherein the polishing block (5) is suitable for being located in the square tube body (4).

2. The square tube inner wall polishing machine according to claim 1, characterized in that: The frame (1) comprises a workbench (110), the upper surface of the workbench (110) is provided with a plurality of baffles (111), guide rails (112) are fixedly connected between the baffles (111), and the limit seat (230) comprises a slider (231), the slider (231) is provided with a guide hole (232) suitable for cooperating with the guide rail (112) to form a sliding pair.

3. The square tube inner wall polishing machine according to claim 2, characterized in that: The workbench (110) is provided with a through groove (113) below the guide rail (112), and a tooth groove (114) is provided on the lower surface of the workbench (110). A locking piece (240) is provided at the bottom of the slider (231) and is suitable for cooperating with the tooth groove (114) to limit the position of the limit seat (230).

4. The square tube inner wall polishing machine according to claim 3, characterized in that: The lower surface of the slider (231) is fixedly connected to a slide rod (235), and the locking member (240) includes a locking pin (241). Both ends of the locking pin (241) cooperate with the tooth groove (114). The locking pin (241) is also provided with a sliding hole (242) suitable for cooperating with the slide rod (235) to form a sliding pair. The lower end of the slide rod (235) passes through the sliding hole (242) and is fixedly connected to a limiting ring (236). The outer sleeve of the slide rod (235) is provided with a spring (205) located between the limiting ring (236) and the locking pin (241).

5. The square tube inner wall polishing machine according to claim 4, characterized in that: The lower surface of the locking pin (241) is fixedly connected to an extension rod (243), and the lower end of the extension rod (243) is fixedly connected to a handle (244).

6. The square tube inner wall polishing machine according to claim 5, characterized in that: The bottom surface of the slider (231) is provided with a pipe connection end (233) suitable for connecting with the air pipe (202); the side surface of the slider (231) is provided with a joint end (234) suitable for being embedded in the square tube body (4) from the end.

7. The square tube inner wall polishing machine according to any one of claims 2 to 6, characterized in that: The workbench (110) is provided with a configuration hole (115), and the clamping mechanism (3) comprises a longitudinal cylinder (301) fixedly connected to the configuration hole (115), a longitudinal telescopic rod (302) movably connected to the longitudinal cylinder (301), a support plate (303) fixedly connected to the upper end of the longitudinal telescopic rod (302), a transverse cylinder (304) fixedly connected to the support plate (303), a transverse telescopic rod (305) movably connected to the transverse cylinder (304), and a clamping plate (306) fixedly connected to the end of the transverse telescopic rod (305).

8. The square tube inner wall polishing machine according to claim 7, characterized in that: The side of the clamping plate (306) facing the square tube body (4) is provided with a friction pad (307), and both ends of the workbench (110) are fixedly connected with brackets (102).

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