A steel pipe inner hole polishing device

Abstract

The utility model relates to a steel pipe inner hole polishing device, comprising a frame, a polishing mechanism is arranged on the frame, the polishing mechanism comprises a first motor and a transmission shaft, the transmission shaft is hollow tubular and a switching rod is passed through the transmission shaft, a switching block located in the transmission shaft is fixedly connected to the front end of the switching rod, a switching groove is provided on the switching block, the switching groove has a low section and two high sections respectively located at both ends of the low section and connected with the low section through an inclined section, a guide groove is provided on the side wall of the switching groove, a first transmission rod and a second transmission rod are passed through the tube wall of the transmission shaft, the lower ends of which are respectively placed in the low section and one of the high sections, a first guide protrusion and a second guide protrusion placed in the guide groove are formed on the first transmission rod and the second transmission rod, and a first polishing block and a second polishing block are fixedly connected to the first transmission rod and the second transmission rod, respectively. This steel pipe inner hole polishing device facilitates multiple polishing operations on the inner hole of the steel pipe and improves the efficiency of polishing.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing equipment, in particular to a steel pipe inner hole polishing device. Background Art

[0002] The production process of steel pipes involves polishing the inner hole of the steel pipe, the purpose of which is to remove impurities on the inner hole wall of the steel pipe to meet the use requirements. Under some production requirements that require a high degree of cleanliness of the inner hole wall of the steel pipe, the inner hole wall of the steel pipe needs to be polished more than twice. In the prior art, the inner hole wall of the steel pipe needs to be polished twice with different cutting forces. Generally, it is carried out in two ways. One is to replace a different polishing wheel after completing a steel pipe inner hole polishing operation and then perform a second steel pipe inner hole polishing operation. The other is to transfer the steel pipe to another polishing device with a different polishing wheel for a second steel pipe inner hole polishing operation after completing a steel pipe inner hole polishing operation. The above two methods of performing multiple polishing operations on the inner hole wall of the steel pipe are not convenient enough, resulting in low polishing efficiency.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a steel pipe inner hole polishing device, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A steel pipe inner hole polishing device comprises a frame, a polishing mechanism and a clamping mechanism are arranged on the frame, the polishing mechanism comprises a first motor slidably arranged on the frame and a transmission shaft connected to the motor, the transmission shaft is hollow tubular and a switching rod is passed through the transmission shaft, the front end of the switching rod is fixedly connected to a switching block located in the transmission shaft, a switching groove is provided on the switching block, the switching groove has a low section and two high sections respectively located at two ends of the low section and connected with the low section through an inclined section, a guide groove is provided on the side wall of the switching groove, a first transmission rod and a second transmission rod matching the width of the switching groove and with the lower ends respectively placed in the low section and one of the high sections are provided on the tube wall of the transmission shaft, a first guide protrusion and a second guide protrusion matching the guide groove and placed in the guide groove are formed on the first transmission rod and the second transmission rod, and a first polishing block and a second polishing block are respectively fixedly connected to the parts of the first transmission rod and the second transmission rod extending out of the transmission shaft.

[0007] Preferably, two linear slide rails are arranged on the frame, sliding seats are arranged on the sliding seats of the two linear slide rails, the first motor is arranged on the sliding seat, a transmission seat is fixedly connected to the sliding seat, and a transmission screw rod is rotatably arranged on the frame, which is screwed in the transmission seat and transmission-connected to the second motor arranged on the frame.

[0008] Preferably, the clamping mechanism includes a plurality of placement seats arranged on the frame and spaced apart from each other, a clamping cylinder arranged above the placement seats and with its output shaft facing downward, and a clamping plate fixedly connected to the output shaft of the clamping cylinder.

[0009] Preferably, a placement groove matching the steel pipe is provided at the upper end of the placement seat, a pressing block is fixedly connected to the pressing plate, and a pressing groove matching the steel pipe is provided at the lower end of the pressing block.

[0010] Preferably, a first sliding groove extending along the length direction of the transmission shaft, a second sliding groove extending along the circumferential direction of the transmission drawer and connected with the front end of the first sliding groove, and a third sliding groove extending backward along the length direction of the transmission shaft and connected with the second sliding groove are formed on the rear end tube wall of the transmission shaft, the front end of the switching rod is rotatably connected to the switching block, and a toggle rod passing through the first sliding groove is fixedly connected to the circumferential surface of the rear end of the switching rod, the front end of the transmission shaft is fixedly connected to a support sleeve, the front end of the switching block is fixedly connected to a support rod passing through the support sleeve, and the support rod is sleeved with a spring located between the switching block and the support sleeve.

[0011] Preferably, a plurality of the first transmission rod, the second transmission rod, the first polishing block, the second polishing block and the switching groove are symmetrically arranged along the center of the transmission shaft.

[0012] Preferably, the first transmission rod and the second transmission rod are respectively formed with a first prismatic plug-in pile and a second plug-in pile on the end surfaces, and the first polishing block and the second polishing block are respectively provided with a first plug-in groove and a second plug-in groove matching the first plug-in pile and the second plug-in groove, and the first plug-in pile and the second plug-in groove are respectively inserted into the first plug-in groove and the second plug-in groove, and the first polishing block and the second polishing block are respectively provided with bolts screwed into the first plug-in pile and the second plug-in pile.

[0013] To sum up, the beneficial effect of the utility model is that by driving the switching rod and the switching block to slide, the cooperation between the guide groove and the first guide protrusion and the second guide protrusion enables the first polishing block and the second polishing block to selectively contact the inner hole wall of the steel pipe, so that the inner hole of the steel pipe can be polished twice conveniently, thereby improving the polishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the polishing mechanism in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the transmission shaft in the utility model;

[0018] Figure 4 It is an exploded schematic diagram of the polishing mechanism in the utility model;

[0019] Figure 5 It is a structural schematic diagram of the switching block in the utility model.

[0020] In the figure: 1, frame; 11, linear slide rail; 12, sliding seat; 13, transmission seat; 14, transmission screw; 15, second motor; 2, polishing mechanism; 21, first motor; 22, transmission shaft; 221, first sliding groove; 222, second sliding groove; 223, third sliding groove; 224, support sleeve; 23, switching rod; 231, toggle rod; 24, switching block; 241, switching groove; 2411, low section; 2412, high section; 2413, tilting section; 242, Guide groove; 243, support rod; 25, first transmission rod; 251, first guide protrusion; 252, first plug-in pile; 26, second transmission rod; 261, second guide protrusion; 262, second plug-in pile; 27, first polishing block; 271, first plug-in groove; 28, second polishing block; 281, second plug-in groove; 29, spring; 3, clamping mechanism; 31, placement seat; 311, placement groove; 32, clamping cylinder; 33, clamping plate; 34, clamping block; 341, clamping groove. DETAILED DESCRIPTION

[0021] The following will be combined with the attached embodiment of the utility model Figure 1-5 , 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 them. Based on the embodiments of 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] As shown in the figure, a steel pipe inner hole polishing device includes a frame 1, on which a polishing mechanism 2 and a clamping mechanism 3 are arranged, the polishing mechanism 2 includes a first motor 21 slidably arranged on the frame 1 and a transmission shaft 22 connected to the motor, the transmission shaft 22 is hollow and tubular, and a switching rod 23 is inserted into the transmission shaft 22, and a switching block 24 located in the transmission shaft 22 is fixedly connected to the front end of the switching rod 23, and a switching groove 241 is opened on the switching block 24, and the switching groove 241 has a low section 2411 and two sections respectively located at both ends of the low section 2411 and connected to the low section 2411 through an inclined section 2413. The high-position section 2412 is connected, and a guide groove 242 is opened on the side wall of the switching groove 241. The tube wall of the transmission shaft 22 is penetrated by a first transmission rod 25 and a second transmission rod 26 which match the width of the switching groove 241 and whose lower ends are respectively placed in the low-position section 2411 and one of the high-position sections 2412. The first transmission rod 25 and the second transmission rod 26 are formed with a first guide protrusion 251 and a second guide protrusion 261 which match the guide groove 242 and are placed in the guide groove 242. The first transmission rod 25 and the second transmission rod 26 are respectively fixedly connected to the parts of the first transmission rod 25 and the second transmission rod 26 extending out of the transmission shaft 22 with a first polishing block 27 and a second polishing block 28.

[0023] Specifically, the first motor 21 is slidably arranged on the frame 1: the frame 1 is provided with two linear slide rails 11, and the sliding seats 12 of the two linear slide rails 11 are provided with sliding seats 12, the first motor 21 is arranged on the sliding seat 12, and the sliding seat 12 is fixedly connected with a transmission seat 13, and the frame 1 is rotatably provided with a transmission screw 14 which is screwed in the transmission seat 13 and is transmission-connected to the second motor 15 arranged on the frame 1.

[0024] Specifically, the clamping mechanism 3 includes a plurality of placement seats 31 arranged on the frame 1 at intervals, a clamping cylinder 32 arranged above the placement seat 31 with the output shaft facing downward, and a clamping plate 33 fixedly connected to the output shaft of the clamping cylinder 32 .

[0025] Specifically, the structure of driving the switching rod 23 is as follows: a first sliding groove 221 extending along the length direction of the transmission shaft 22, a second sliding groove 222 extending along the circumferential direction of the transmission drawer and connected to the front end of the first sliding groove 221, and a third sliding groove 223 extending backward along the length direction of the transmission shaft 22 and connected to the second sliding groove 222 are opened on the rear end tube wall of the transmission shaft 22; the front end of the switching rod 23 is rotatably connected to the switching block 24, and a toggle rod 231 passing through the first sliding groove 221 is fixedly connected to the circumferential surface of the rear end of the switching rod 23; the front end of the transmission shaft 22 is fixedly connected to a support sleeve 224; the front end of the switching block 24 is fixedly connected to a support rod 243 passing through the support sleeve 224; the support rod 243 is sleeved with a spring 29 located between the switching block 24 and the support sleeve 224.

[0026] In the above embodiment, the steel pipe to be polished is placed on the placement seat 31, and the clamping cylinder 32 drives the clamping plate 33 to press against the steel pipe so that the steel pipe is stably maintained on the placement seat 31 and aligned with the transmission shaft 22, and the toggle rod 231 is toggled into the first sliding groove 221. The switching rod 23 slides backward in the transmission shaft 22 under the action of the spring 29, so that the toggle rod 231 slides backward to the rear end in the first sliding groove 221. The first sliding groove 221 limits the toggle rod 231, thereby limiting the sliding of the switching rod 23, the switching block 24 and the support rod 243. At this time, the first transmission rod 25 is located in the low section 2411 of the switching groove 241, and the second transmission rod 26 is located in the high section 2412 of the switching groove 241, that is, the second polishing block 28. The first polishing block 27 protrudes more from the transmission shaft 22 than the first polishing block 28, so that the end face of the second polishing block 28 can contact the inner hole wall of the steel pipe, while the end face of the first polishing block 27 will not contact the inner hole wall of the steel pipe. Then the second motor 15 drives the screw to rotate and drives the sliding plate and then drives the first motor 21 to slide along the linear slide rail 11 toward the steel pipe, so that the transmission shaft 22 carries the first polishing block 27 and the second polishing block 28 into the inner hole of the steel pipe, and the end face of the second polishing block 28 contacts the inner hole wall of the steel pipe. At the same time, the first motor 21 drives the transmission shaft 22 to drive the second polishing block 28 to rotate, and cooperates with the forward sliding of the sliding seat 12 to perform the first polishing operation on the inner hole of the steel pipe. After the sliding seat 12 slides forward into place to complete the first polishing operation, the first motor 21 and the second motor 21 are stopped. The second motor 15 moves the toggle rod 231 forward to slide forward in the first sliding groove 221, thereby driving the switching rod 23, the switching block 24 and the support rod 243 to slide forward in the transmission shaft 22. In the process of the switching block 24 sliding forward, the first guide protrusion 251 and the second guide protrusion 261 slide in the guide groove 242, so that the first transmission rod 25 and the second transmission rod 26 slide into the high section 2412 and the low section 2411 of the switching groove 241 respectively, thereby driving the first transmission rod 25 to slide outward on the transmission shaft 22, and driving the second transmission rod 26 to slide inward on the transmission shaft 22, so that the first polishing block 27 protrudes more from the transmission shaft 22 than the second polishing block 28, and the end face of the first polishing block 27 contacts the inner hole wall of the steel pipe. Next, the toggle rod 231 is swung to drive the switching rod 23 to rotate so that the toggle rod 231 slides to the bottom end in the second sliding groove 222. The switching rod 23 drives the toggle rod 231 to slide to the bottom end in the third sliding groove 223 under the action of the spring 29, so that the end face of the first polishing block 27 keeps in contact with the inner hole wall of the steel pipe. Next, the first motor 21 and the second motor 15 are started again. The first motor 21 drives the first polishing block 27 to rotate, and the second motor 15 drives the sliding seat 12 to slide backward, so that the first polishing block 27 cooperates with the backward sliding of the sliding seat 12 to polish the inner hole of the steel pipe for the second time. Through the above structure and method, by setting the first polishing block 27 and the second polishing block 28 to different mesh sizes, the inner hole of the steel pipe can be polished twice conveniently and quickly.Thereby improving the polishing efficiency.

[0027] Preferably, a placement groove 311 matching the steel pipe is provided at the upper end of the placement seat 31, a pressing block 34 is fixedly connected to the pressing plate 33, and a pressing groove 341 matching the steel pipe is provided at the lower end of the pressing block 34. The steel pipe is placed in the placement groove 311, and the pressing plate 33 is photosensitively inserted into the pressing groove 341 when pressing the steel pipe, so that the steel pipe is more firmly clamped and fixed through the cooperation of the placement groove 311 and the pressing groove 341, thereby ensuring the stability of the steel pipe during polishing operation, thereby ensuring the polishing effect.

[0028] The first transmission rod 25, the second transmission rod 26, the first polishing block 27, the second polishing block 28 and the switching groove 241 are symmetrically arranged along the center of the transmission shaft 22, thereby increasing the contact area between the first polishing block 27 and the second polishing block 28 and the inner hole wall of the steel pipe, thereby ensuring the polishing effect and improving the polishing efficiency.

[0029] Preferably, a first prismatic plug-in pile 252 and a second plug-in pile 262 are respectively formed on the end surfaces of the first transmission rod 25 and the second transmission rod 26, and a first plug-in groove 271 and a second plug-in groove 281 matching the first plug-in pile 252 and the second plug-in pile 262 are respectively formed on the first polishing block 27 and the second polishing block 28, and the first plug-in pile 252 and the second plug-in pile 262 are respectively inserted into the first plug-in groove 271 and the second plug-in groove 281, and bolts screwed into the first plug-in pile 252 and the second plug-in pile 262 are respectively penetrated in the first polishing block 27 and the second polishing block 28. Through the above structure, the first polishing block 27 and the second polishing block 28 are respectively detachably connected to the first transmission rod 25 and the second transmission rod 26, so that the first polishing block 27 and the second polishing block 28 after wear and tear can be replaced to ensure the polishing effect.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe inner hole polishing device, comprising a frame (1), the frame (1) being provided with a polishing mechanism (2) and a clamping mechanism (3), the polishing mechanism (2) comprising a first motor (21) slidably arranged on the frame (1) and a transmission shaft (22) transmission-connected to the motor, characterized in that: The transmission shaft (22) is in the shape of a hollow tube and a switching rod (23) is inserted into the transmission shaft (22). The front end of the switching rod (23) is fixedly connected to a switching block (24) located in the transmission shaft (22). The switching block (24) is provided with a switching groove (241). The switching groove (241) has a low-position section (2411) and two high-position sections (2412) located at two ends of the low-position section (2411) and connected to the low-position section (2411) through inclined sections (2413). A guide groove (242) is provided on the side wall of the switching groove (241). A first transmission rod (25) and a second transmission rod (26) are provided on the wall, the first transmission rod (25) and the second transmission rod (26) being matched with the width of the switching groove (241) and having their lower ends respectively disposed in the low section (2411) and one of the high sections (2412); a first guide protrusion (251) and a second guide protrusion (261) are formed on the first transmission rod (25) and the second transmission rod (26) and are matched with the guide groove (242) and disposed in the guide groove (242); a first polishing block (27) and a second polishing block (28) are respectively fixedly connected to the portions of the first transmission rod (25) and the second transmission rod (26) extending out of the transmission shaft (22).

2. A steel pipe inner hole polishing device according to claim 1, characterized in that: Two linear slide rails (11) are arranged on the frame (1), and a sliding seat (12) is arranged on the sliding seat (12) of the two linear slide rails (11). The first motor (21) is arranged on the sliding seat (12), and a transmission seat (13) is fixedly connected to the sliding seat (12). A transmission screw rod (14) is rotatably arranged on the frame (1), which is screwed into the transmission seat (13) and is transmission-connected to a second motor (15) arranged on the frame (1).

3. A steel pipe inner hole polishing device according to claim 2, characterized in that: The clamping mechanism (3) comprises a plurality of placement seats (31) arranged on the frame (1) at intervals, a clamping cylinder (32) arranged above the placement seats (31) and with its output shaft facing downward, and a clamping plate (33) fixedly connected to the output shaft of the clamping cylinder (32).

4. A steel pipe inner hole polishing device according to claim 3, characterized in that: The upper end of the placement seat (31) is provided with a placement groove (311) matching the steel pipe, the clamping plate (33) is fixedly connected with a clamping block (34), and the lower end of the clamping block (34) is provided with a clamping groove (341) matching the steel pipe.

5. The steel pipe inner hole polishing device according to claim 3, characterized in that: A first sliding groove (221) extending along the length direction of the transmission shaft (22), a second sliding groove (222) extending along the circumferential direction of the transmission shaft and communicating with the front end of the first sliding groove (221), and a third sliding groove (223) extending backward along the length direction of the transmission shaft (22) and communicating with the second sliding groove (222) are provided on the rear end tube wall of the transmission shaft (22); the front end of the switching rod (23) is rotatably connected to the switching block (24); a toggle rod (231) passing through the first sliding groove (221) is fixedly connected to the rear end circumferential surface of the switching rod (23); the front end of the transmission shaft (22) is fixedly connected to a support sleeve (224); the front end of the switching block (24) is fixedly connected to a support rod (243) passing through the support sleeve (224); and a spring (29) is sleeved on the support rod (243) and is located between the switching block (24) and the support sleeve (224).

6. A steel pipe inner hole polishing device according to claim 1, characterized in that: A plurality of the first transmission rod (25), the second transmission rod (26), the first polishing block (27), the second polishing block (28) and the switching slot (241) are symmetrically arranged along the center of the transmission shaft (22).

7. The steel pipe inner hole polishing device according to claim 1, characterized in that: A first plug-in pile (252) and a second plug-in pile (262) in the shape of a prism are formed on the end surfaces of the first transmission rod (25) and the second transmission rod (26), respectively; a first plug-in groove (271) and a second plug-in groove (281) matching the first plug-in pile (252) and the second plug-in pile (262) are respectively formed on the first polishing block (27) and the second polishing block (28); the first plug-in pile (252) and the second plug-in pile (262) are respectively inserted into the first plug-in groove (271) and the second plug-in groove (281); and bolts are inserted into the first plug-in pile (252) and the second plug-in pile (262) in the first polishing block (27) and the second polishing block (28).

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