Automatic feeding and grinding device, production line and method having the same

Abstract

The present invention discloses an automatic feeding and grinding device, which relates to the technical field of steel pipe grinding, and includes: a feeding rack, a rotating and fixing mechanism, and a grinding seat. The steel pipes to be ground are put into the feeding rack in a centralized manner, and a single steel pipe is guided to a predetermined position at the bottom of a blanking port through the right / or left guide plate of the feeding rack, and then the steel pipe at the bottom of the blanking port is clamped by the clamping head of the rotating and fixing mechanism, and the steel pipe is moved to the grinding seat for rotational grinding. When the steel pipe at the bottom of the blanking port moves out of the blanking port, the movable baffle plate on the side of the blanking port is rotated by force, so that the gravity ball pulls the pressure head to squeeze the blocking plate to extend and restrict the previous steel pipe on the blanking port from falling into the bottom of the blanking port. Only when the movable baffle plate is reset, the blocking plate will be reset, and finally the previous steel pipe on the blanking port will fall into the bottom of the blanking port. Through this simple structure, it is conducive to the rotating and fixing mechanism to move the steel pipes to be ground one by one to the grinding seat for grinding, realize automatic feeding, clamping, and grinding operations, and greatly improve the grinding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe grinding, in particular to an automatic feeding and grinding device. Background Art

[0002] Steel pipes are used to transport fluids and powdered solids, exchange heat, manufacture mechanical parts and containers, and are also an economical steel material. The development of steel pipe production technology began with the rise of the bicycle manufacturing industry, the development of oil in the early 19th century, the manufacture of ships, boilers, and aircraft during the two world wars, the manufacture of thermal power boilers after World War II, the development of the chemical industry, and the drilling and transportation of oil and natural gas, all of which have strongly promoted the development of the steel pipe industry in terms of variety, output and quality.

[0003] As a conveying pipeline, steel pipes must be polished. The first reason is that the smoothness of their surface is very important in certain specific occasions, and the appearance of smooth stainless steel pipes is more beautiful, which is convenient for sales and direct use; the second reason is that after the steel pipe has been idle for a long time, its surface is easily affected by moisture and rusted, and the surface of the steel pipe needs to be derusted when it is used; the third reason is that the connection between the two steel pipes is mainly carried out by welding, and the welding parts need to be polished and polished after welding.

[0004] Existing devices for grinding steel pipes all require manual assistance to fix the steel pipes on the grinding equipment before grinding, and cannot realize automatic feeding, fixing and grinding operations of the steel pipes, thus affecting the grinding efficiency. Summary of the invention

[0005] One of the purposes of the present invention is to solve the problem in the prior art that when grinding a steel pipe, manual assistance is required to fix the steel pipe on a grinding device before grinding, thereby affecting the grinding efficiency.

[0006] A second object of the present invention is to provide a production line with an automatic feeding and polishing device.

[0007] The third object of the present invention is to provide an automatic feeding and grinding method.

[0008] In order to achieve one of the above purposes, the present invention adopts the following technical solution: an automatic feeding and grinding device, which includes a base, and the base includes: a feeding rack, a rotating fixing mechanism, and a grinding seat.

[0009] The loading rack is installed on the right side of the base, and the loading rack has a storage space for storing the steel pipes to be polished. The loading rack also has: a right guide plate, a left guide plate, a fixed beam, a movable baffle, and a limit baffle.

[0010] The right guide plate is installed obliquely on the right side wall of the storage space. The left guide plate is installed obliquely on the left side wall of the storage space, and a material drop opening is formed between the left guide plate and the right guide plate for the steel pipe to be polished to drop. The fixed beam is located under the right guide plate, and the fixed beam is horizontally arranged on the front and rear sides of the loading rack. The movable baffle is rotatably connected to the fixed beam, and a bias spring is provided at the rotation connection of the movable baffle, and the movable baffle is located under the material drop opening.

[0011] The limit baffle is installed under the left guide plate, and the limit baffle is provided with: a sliding rod, a gravity ball, a pressure head, and a blocking plate. The sliding rod is slidably connected to the limit baffle. The gravity ball is connected to the lower end of the sliding rod, and the movable baffle resists and limits the movement of the gravity ball. The pressure head is connected to the upper end of the sliding rod. The blocking plate is slidably embedded in the limit baffle, and the contact surface between the baffle plate and the pressure head is wedge-shaped. A reset spring is provided between the baffle plate and the limit baffle.

[0012] The rotating and fixing mechanism is installed at the front and rear sides of the loading rack, and the rotating and fixing mechanism has a rotating disk, on which a clamping head with telescopic and rotating functions is installed. The grinding seat is installed at the lower left side of the loading rack.

[0013] In the above technical solution, when the embodiment of the present invention is used, the steel pipe to be polished is placed in the storage space of the loading rack, and the steel pipe to be polished is guided into the blanking port through the right guide plate and the left guide plate arranged obliquely in the storage space. After entering the bottom of the blanking port, the steel pipe to be polished remains motionless under the blocking of the movable baffle and the limit baffle.

[0014] Then, the rotating disk of the rotating fixing mechanism is controlled to rotate so that the clamping head on the rotating disk and the steel pipe to be polished are on the same axis. At this time, the clamping head is controlled to extend into the hole of the steel pipe to be polished so that the clamping head clamps the steel pipe to be polished from both the front and rear sides to achieve clamping;

[0015] Then, the rotating disk is controlled to rotate, thereby driving the clamping head and the steel pipe to be polished to rotate. When the steel pipe to be polished rotates, the movable baffle is squeezed to rotate. At this time, the gravity ball in the limit baffle is not restricted by the movable baffle. Under the action of gravity, the pressure head is pulled down to press the baffle plate, causing the baffle plate to extend to the right into the blanking port, preventing the upper steel pipe to be polished from falling into the bottom of the blanking port;

[0016] When the steel pipe to be polished on the clamping head rotates out of the blanking port, the movable baffle is not squeezed and resets under the action of the bias spring, so that the movable baffle pushes the gravity ball to reset upward, and then the blocking plate is reset under the action of the reset spring, allowing the blocked steel pipe to be polished to enter the bottom of the blanking port so that the clamping head can clamp it next time;

[0017] Finally, when the clamping head drives the steel pipe to be polished onto the polishing seat, the clamping head is controlled to drive the steel pipe to rotate, thereby causing the polishing seat to polish the steel pipe.

[0018] Furthermore, in an embodiment of the present invention, the length direction of the blanking opening is adapted to the length of the steel pipe to be polished, and the width of the blanking opening is not less than the diameter of the steel pipe to be polished.

[0019] Furthermore, in an embodiment of the present invention, the right end surface of the limit baffle is a guide surface inclined toward the lower left side, so as to prevent the steel pipe from getting stuck when the clamping head rotates and moves.

[0020] Furthermore, in an embodiment of the present invention, a tension spring is provided between the sliding rod and the limit baffle, the tension spring is in a stretched state, the elastic force of the tension spring is smaller than that of the bias spring, and the elastic force of the tension spring is greater than that of the reset spring.

[0021] Furthermore, in an embodiment of the present invention, the rotating fixing mechanism also has a power motor, which is installed on the rotating disk. The rotating disk is connected to the driving motor and is driven to rotate by the driving motor. The power motor is connected to a driving gear. A thrust head is provided on the side of the power motor. The clamping head is telescopically connected to the thrust head through a cover plate. An electromagnet is provided on the front end surface of the thrust head, and the electromagnet is connected to a power supply. A magnet is provided on the rear end surface of the clamping head, and a passive gear matching the driving gear is provided on the outer surface of the cover plate.

[0022] Furthermore, in an embodiment of the present invention, a pressure spring is provided between the thrust head and the clamping head.

[0023] Furthermore, in an embodiment of the present invention, a pressure block is installed under the magnet stone, a side support block is slidably connected to the side of the clamping head, a reset elastic member is provided between the side support block and the clamping head, the pressure block is against the side support block, and the contact surface between the pressure block and the side support block is wedge-shaped.

[0024] The specific steps of clamping the steel pipe to be polished by the clamping head are as follows: energize the electromagnet of the thrust head, and through the principle of repulsion between the electromagnet and the magnet on the clamping head, the electromagnet pushes the clamping head to clamp the steel pipe to be polished (at this time, the clamping head and the steel pipe are in a clearance fit, and the part of the clamping head that presses against the steel pipe is a protrusion), and then the electromagnet is under pressure, and the pressure block under the magnet presses down the side support block, so that the side support block extends out of the clamping head and presses against the inner tube wall of the steel pipe to be polished, thereby clamping and fixing the steel pipe to be polished.

[0025] The specific steps of driving the steel pipe to rotate by the clamping head are as follows: after the clamping head is pushed by the electromagnet, the cover plate is driven to slide along the thrust head, so that the passive gear on the cover plate is engaged with the driving gear. At this time, after the power motor is started to drive the driving gear to rotate, the passive gear drives the clamping head and the steel pipe on the clamping head to rotate under the drive gear, so that the grinding seat can grind the steel pipe conveniently.

[0026] The simple structure of controlling the extension and rotation of the clamping head and the coordination between the clamping head and the steel pipe is conducive to achieving the efficiency and stability of automatically driving the steel pipe grinding.

[0027] Furthermore, in an embodiment of the present invention, a telescopic cylinder and a power seat are installed on the grinding seat in a sliding connection, the telescopic cylinder is connected to the power seat, a main shaft is rotatably connected to the power seat, the main shaft is connected to a main shaft motor and is driven to rotate by the main shaft motor, and a grinding wheel is connected to the main shaft.

[0028] When the grinding seat is grinding the steel pipe, the telescopic cylinder is first started to push the grinding wheel on the power seat close to the steel pipe so that the steel pipe fits the grinding wheel. Finally, the spindle motor is started to drive the spindle to drive the grinding wheel to rotate, thereby grinding the steel pipe.

[0029] Furthermore, in an embodiment of the present invention, a plurality of grinding wheels are distributed along the length direction of the steel pipe, and gaps exist between the plurality of grinding wheels.

[0030] The main shaft is provided with external teeth, a sliding sleeve is provided between the main shaft and the grinding wheel, the sliding sleeve has tooth grooves matched with the external teeth, and the external teeth are embedded in the tooth grooves.

[0031] Bearings are connected on both sides of the sliding sleeve, a connecting plate is connected on the left side of the bearing, and the connecting plate is threadedly connected to the transmission screw.

[0032] In the actual grinding of steel pipes with grinding wheels, it was found that when the grinding wheel adopts an integral structure, due to its excessive length, not only will the overall weight of the grinding wheel be too heavy, resulting in unstable spindle rotation and affecting the grinding effect, but also the coolant cooling cannot fully penetrate between the grinding wheel and the steel pipe during grinding, resulting in poor cooling effect. In addition, some of the grinding debris will also remain in the upper angle between the grinding wheel and the steel pipe, affecting the grinding effect.

[0033] In order to solve the above three problems, the present application divides the grinding wheel into multiple independent individuals, which can effectively solve the above three problems.

[0034] Furthermore, in order to prevent the part of the steel pipe that is not in contact with the grinding wheel from being unable to be ground, the present application arranges external teeth on the main shaft and adds a sliding sleeve to cooperate with the external teeth, so that when the steel pipe needs to be ground as a whole, the transmission screw can be controlled to rotate and drive the connecting plate to move left and right, thereby driving the bearing, sliding sleeve and grinding wheel to move along the length direction of the steel pipe, so that the grinding wheel can grind the entire steel pipe.

[0035] The beneficial effects of the present invention are:

[0036] The present invention places the steel pipes to be polished into the loading rack, guides a single steel pipe to a predetermined position at the bottom of the blanking port through the right guide / or left guide plate of the loading rack, and then uses the clamping head of the rotating fixing mechanism to telescope and clamp the steel pipe at the bottom of the blanking port, and moves the steel pipe to the polishing seat for rotational polishing. When the steel pipe at the bottom of the blanking port moves out of the blanking port, the movable baffle plate on the side of the blanking port will be squeezed and rotated, so that the gravity ball pulls the pressure head to squeeze the blocking plate to extend and restrict the previous steel pipe on the blanking port from falling into the bottom of the blanking port. Only after the movable baffle plate is reset, the blocking plate will be reset, and finally the previous steel pipe on the blanking port will fall into the bottom of the blanking port. This simple structure different from the prior art is very conducive to the clamping head of the rotating fixing mechanism to move the steel pipes to be polished to the polishing seat one by one for polishing, realize automatic feeding, clamping, and polishing operations, and greatly improve the polishing efficiency.

[0037] In order to achieve the second of the above-mentioned purposes, the present invention adopts the following technical solution: a production line, which has the automatic feeding and polishing device described in one of the above-mentioned invention purposes.

[0038] Furthermore, in an embodiment of the present invention, a mechanical rod is provided on the upper left side of the grinding seat, and the mechanical rod is used to hook the ground steel pipe. A transportation line is provided on the left side of the mechanical rod, and the transportation line is used to receive the steel pipe on the mechanical rod.

[0039] After the steel pipe is polished, the telescopic cylinder is started to drive the grinding wheel to reset, and then the rotating disk is started to drive the polished steel pipe to rotate to the left. At this time, the mechanical rod is driven to rotate so that the mechanical rod hooks the steel pipe, and the power supply to the electromagnet is stopped, so that the clamping head is reset under the action of the pressure spring, and the mechanical rod continues to rotate so that the mechanical rod pushes the steel pipe onto the transportation line and moves to the next process.

[0040] In order to achieve the third objective, the present invention adopts the following technical solution: an automatic feeding and grinding method, applied to the automatic feeding and grinding device described in one of the above objectives or the production line described in the second objective, comprising the following steps:

[0041] The steel pipe to be polished is placed in the storage space of the loading rack, and the steel pipe to be polished is guided into the blanking port through the right guide plate and the left guide plate arranged obliquely in the storage space. After entering the bottom of the blanking port, the steel pipe to be polished remains motionless under the blocking of the movable baffle and the limit baffle;

[0042] Then, the rotating disk of the rotating fixing mechanism is controlled to rotate so that the clamping head on the rotating disk and the steel pipe to be polished are on the same axis. At this time, the clamping head is controlled to extend into the hole of the steel pipe to be polished so that the clamping head clamps the steel pipe to be polished from both the front and rear sides to achieve clamping;

[0043] Then, the rotating disk is controlled to rotate, thereby driving the clamping head and the steel pipe to be polished to rotate. When the steel pipe to be polished rotates, the movable baffle is squeezed to rotate. At this time, the gravity ball in the limit baffle is not restricted by the movable baffle. Under the action of gravity, the pressure head is pulled down to press the baffle plate, causing the baffle plate to extend to the right into the blanking port, preventing the upper steel pipe to be polished from falling into the bottom of the blanking port;

[0044] When the steel pipe to be polished on the clamping head rotates out of the blanking port, the movable baffle is not squeezed and resets under the action of the bias spring, so that the movable baffle pushes the gravity ball to reset upward, and then the blocking plate is reset under the action of the reset spring, allowing the blocked steel pipe to be polished to enter the bottom of the blanking port so that the clamping head can clamp it next time;

[0045] Finally, when the clamping head drives the steel pipe to be polished onto the polishing seat, the clamping head is controlled to drive the steel pipe to rotate, thereby causing the polishing seat to polish the steel pipe.

[0046] Further, in the embodiment of the present invention, in the above steps, the specific steps of clamping the steel pipe to be polished by the clamping head are: energizing the electromagnet of the thrust head, and the electromagnet pushes the clamping head to clamp the steel pipe to be polished according to the principle of repulsion between the electromagnet and the magnet on the clamping head, and then the electromagnet is under pressure, and the pressure block under the magnet presses down the side abutment block, so that the side abutment block extends out of the clamping head and abuts against the inner tube wall of the steel pipe to be polished, thereby clamping and fixing the steel pipe to be polished;

[0047] The specific steps of driving the steel pipe to rotate by the clamping head are as follows: after the clamping head is pushed by the electromagnet, the cover plate is driven to slide along the thrust head, so that the passive gear on the cover plate is engaged with the driving gear. At this time, after the power motor is started to drive the driving gear to rotate, the passive gear drives the clamping head and the steel pipe on the clamping head to rotate under the drive gear, so that the grinding seat can grind the steel pipe conveniently.

[0048] Furthermore, in an embodiment of the present invention, during the process of grinding the steel pipe by the grinding seat, the telescopic cylinder is first started to push the grinding wheel on the power seat close to the steel pipe so that the steel pipe and the grinding wheel fit together, and finally the spindle motor is started to drive the spindle to drive the grinding wheel to rotate, thereby achieving the grinding of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a top view schematic diagram of the automatic feeding and grinding device according to an embodiment of the present invention.

[0050] Figure 2 It is a schematic diagram of the side structure of the automatic feeding and grinding device according to an embodiment of the present invention.

[0051] Figure 3 It is a schematic structural diagram of a loading rack according to an embodiment of the present invention.

[0052] Figure 4 It is a schematic plan view of a rotating fixing mechanism according to an embodiment of the present invention.

[0053] Figure 5 It is a schematic diagram of the top view of the rotating and fixing mechanism according to an embodiment of the present invention.

[0054] Figure 6 It is a schematic diagram of the motion effect of the rotating fixing mechanism according to an embodiment of the present invention.

[0055] Figure 7 It is a schematic diagram of the motion effect of the loading rack according to an embodiment of the present invention.

[0056] Figure 8 It is a schematic diagram of the side structure of an automatic feeding and grinding device according to another embodiment of the present invention.

[0057] Fig. 9 It is a schematic diagram of the side structure of the grinding seat according to an embodiment of the present invention.

[0058] Fig.10 It is a partial top view schematic diagram of the grinding seat according to an embodiment of the present invention.

[0059] In the attached figure

[0060] 10. Base

[0061] 20. Loading rack 21. Storage space 22. Right guide plate

[0062] 23. Left guide plate 24. Dropping port 25. Fixed beam

[0063] 26, movable baffle 27, limit baffle 271, sliding rod

[0064] 272, tension spring 273, gravity ball 274, pressure head

[0065] 28. Blocking plate

[0066] 30. Rotating and fixing mechanism 31. Rotating disk 32. Power motor

[0067] 321, driving gear 33, thrust head 331, electromagnet

[0068] 34. Clamping head 341. Magnet stone 342. Cover plate

[0069] 343, passive gear 344, pressure block 345, side block

[0070] 40. Grinding seat 41. Telescopic cylinder 42. Power seat

[0071] 43, spindle 431, external teeth 44, grinding wheel

[0072] 45, sliding sleeve 46, bearing 47, connecting plate

[0073] 48. Transmission screw

[0074] 50. Mechanical rod 60. Transport line DETAILED DESCRIPTION

[0075] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0076] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0077] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are presented to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, the known automatic feeding and grinding methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0079] Embodiment 1:

[0080] An automatic feeding and grinding device, wherein Figure 1 , 2 As shown, it includes a base 10 , and the base 10 includes: a loading rack 20 , a rotating fixing mechanism 30 , and a grinding seat 40 .

[0081] like Figure 2 , 3 As shown, the loading rack 20 is installed on the right side of the base 10. The loading rack 20 has a storage space 21 for storing the steel pipes to be polished. The loading rack 20 also has: a right guide plate 22, a left guide plate 23, a fixed beam 25, a movable baffle 26, and a limit baffle 27.

[0082] The right guide plate 22 is installed obliquely on the right side wall of the storage space 21. The left guide plate 23 is installed obliquely on the left side wall of the storage space 21, and a drop opening 24 for the steel pipe to be polished is formed between the left guide plate 23 and the right guide plate 22. The fixed beam 25 is located under the right guide plate 22, and the fixed beam 25 is horizontally placed on the front and rear sides of the loading rack 20. The movable baffle 26 is rotatably connected to the fixed beam 25, and a bias spring is provided at the rotation connection of the movable baffle 26, and the movable baffle 26 is located under the drop opening 24.

[0083] like Figure 3 As shown, the limit baffle 27 is installed under the left guide plate 23, and the limit baffle 27 is provided with: a sliding rod 271, a gravity ball 273, a pressure head 274, and a blocking plate 28. The sliding rod 271 is slidably connected to the limit baffle 27. The gravity ball 273 is connected to the lower end of the sliding rod 271, and the movable baffle 26 resists and limits the movement of the gravity ball 273. The pressure head 274 is connected to the upper end of the sliding rod 271. The blocking plate 28 is slidably embedded in the limit baffle 27, and the contact surface between the blocking plate 28 and the pressure head 274 is wedge-shaped. A return spring is provided between the blocking plate 28 and the limit baffle 27.

[0084] The rotating fixing mechanism 30 is installed at the front and rear sides of the loading rack 20. The rotating fixing mechanism 30 has a rotating disk 31. A clamping head 34 with telescopic and rotating functions is installed on the rotating disk 31. The grinding seat 40 is installed at the lower left side of the loading rack 20.

[0085] Implementation steps:

[0086] When using, Figure 6 , 7 As shown, the steel pipe to be polished is placed in the storage space 21 of the loading rack 20, and the steel pipe to be polished is guided into the blanking port 24 through the right guide plate 22 and / or the left guide plate 23 inclined in the storage space 21. After entering the bottom of the blanking port 24, the steel pipe to be polished remains stationary under the obstruction of the movable baffle 26 and the limit baffle 27.

[0087] Then, the rotating disk 31 of the rotating fixing mechanism 30 is controlled to rotate so that the clamping head 34 on the rotating disk 31 and the steel pipe to be polished are on the same axis. At this time, the clamping head 34 is controlled to extend into the hole of the steel pipe to be polished so that the clamping head 34 clamps the steel pipe to be polished from the front and back sides to achieve clamping.

[0088] Then, the rotating disk 31 is controlled to rotate, thereby driving the clamping head 34 and the steel pipe to be polished to rotate. When the steel pipe to be polished rotates, the movable baffle 26 is squeezed to rotate. At this time, the gravity ball 273 in the limit baffle 27 is not restricted by the movable baffle 26. Under the action of gravity, the pressure head 274 is pulled down to press the blocking plate 28, causing the blocking plate 28 to extend to the right into the blanking port 24, preventing the steel pipe to be polished above from falling into the bottom of the blanking port 24.

[0089] When the steel pipe to be polished on the clamping head 34 rotates out of the blanking opening 24, the movable baffle 26 is not squeezed and resets under the action of the bias spring, so that the movable baffle 26 pushes the gravity ball 273 to reset upward, and then the blocking plate 28 is reset under the action of the reset spring, allowing the blocked steel pipe to be polished to enter the bottom of the blanking opening 24, so that the clamping head 34 can clamp it next time;

[0090] Finally, after the clamping head 34 drives the steel pipe to be polished onto the polishing seat 40 , the clamping head 34 is controlled to drive the steel pipe to rotate, so that the polishing seat 40 polishes the steel pipe.

[0091] The present invention puts the steel pipes to be polished into the loading rack 20, guides the single steel pipe to the predetermined position at the bottom of the blanking port 24 through the right guide plate 22 / or the left guide plate 23 of the loading rack 20, and then uses the clamping head 34 of the rotating fixing mechanism 30 to clamp the steel pipe at the bottom of the blanking port 24, and moves the steel pipe to the polishing seat 40 for rotary polishing. When the steel pipe at the bottom of the blanking port 24 moves out of the blanking port 24, the movable baffle 26 on the side of the blanking port 24 will be squeezed and rotated, so that the gravity ball 273 pulls the pressure head 274 to squeeze the baffle 28 to extend and restrict the previous steel pipe on the blanking port 24 from falling into the bottom of the blanking port 24. Only after the movable baffle 26 is reset, the baffle 28 will be reset, and finally the previous steel pipe on the blanking port 24 will fall into the bottom of the blanking port 24. This simple structure, which is different from the prior art, is very helpful for the clamping head 34 of the rotating fixing mechanism 30 to move the steel pipes to be polished to the polishing seat 40 one by one for polishing, thereby realizing automatic feeding, clamping and polishing operations and greatly improving the polishing efficiency.

[0092] like Figure 1 , 3 As shown, the length direction of the blanking opening 24 is adapted to the length of the steel pipe to be polished, and the width of the blanking opening 24 is not less than the diameter of the steel pipe to be polished.

[0093] The right side end surface of the limit baffle 27 is a guide surface inclined to the lower left side to prevent the steel pipe from getting stuck when the clamping head 34 rotates and moves.

[0094] A tension spring 272 is provided between the sliding rod 271 and the limiting baffle 27 . The tension spring 272 is in a stretched state. The elastic force of the tension spring 272 is smaller than that of the bias spring, and the elastic force of the tension spring 272 is larger than that of the return spring.

[0095] like Figure 4 , 5 As shown, the rotating fixing mechanism 30 also has a power motor 32, which is installed on the rotating disk 31. The rotating disk 31 is connected to the driving motor and is driven to rotate by the driving motor. The power motor 32 is connected to a driving gear 321. A thrust head 33 is provided on the side of the power motor 32. The clamping head 34 is telescopically connected to the thrust head 33 through a covering plate 342. An electromagnet 331 is provided on the front end surface of the thrust head 33. The electromagnet 331 is connected to a power supply. A magnet 341 is provided on the rear end surface of the clamping head 34. A passive gear 343 cooperating with the driving gear 321 is provided on the outer surface of the covering plate 342.

[0096] A pressure spring is provided between the thrust head 33 and the clamping head 34 .

[0097] like Figure 5As shown, a pressure block 344 is installed under the magnet stone 341, and a side support block 345 is slidably connected to the side of the clamping head 34. A reset elastic member is provided between the side support block 345 and the clamping head 34, and the pressure block 344 is against the side support block 345. The contact surface between the pressure block 344 and the side support block 345 is wedge-shaped.

[0098] The specific steps of clamping the steel pipe to be polished by the clamping head 34 are as follows: the electromagnet 331 of the thrust head 33 is energized, and the electromagnet 331 pushes the clamping head 34 to clamp the steel pipe to be polished through the principle of like-charge repulsion between the electromagnet 331 and the magnet 341 on the clamping head 34 (at this time, the clamping head 34 and the steel pipe are in a clearance fit, and the part of the clamping head 34 that presses against the steel pipe is a protrusion), and then the electromagnet 331 is under pressure, and the pressure block 344 under the magnet 341 presses down the side support block 345, so that the side support block 345 extends out of the clamping head 34 and presses against the inner pipe wall of the steel pipe to be polished, thereby clamping and fixing the steel pipe to be polished.

[0099] The specific steps of driving the steel pipe to rotate by the clamping head 34 are as follows: after the clamping head 34 is pushed by the electromagnet 331, it drives the cover plate 342 to slide along the thrust head 33, so that the passive gear 343 on the cover plate 342 is engaged with the driving gear 321. At this time, after starting the power motor 32 to drive the driving gear 321 to rotate, the passive gear 343 drives the clamping head 34 and the steel pipe on the clamping head 34 to rotate under the drive of the driving gear 321, so that the grinding seat 40 is convenient for grinding the steel pipe.

[0100] The simple structure of controlling the extension and rotation of the clamping head 34 and the coordination between the clamping head 34 and the steel pipe is conducive to achieving the efficiency and stability of automatically driving the steel pipe grinding.

[0101] like Figure 1 As shown, a telescopic cylinder 41 and a power seat 42 are installed on the grinding seat 40, and the telescopic cylinder 41 is connected to the power seat 42. A main shaft 43 is rotatably connected to the power seat 42. The main shaft 43 is connected to the main shaft 43 motor and is driven to rotate by the main shaft 43 motor. A grinding wheel 44 is connected to the main shaft 43.

[0102] When the grinding seat 40 is grinding the steel pipe, the telescopic cylinder 41 is first started to push the grinding wheel 44 on the power seat 42 close to the steel pipe so that the steel pipe fits the grinding wheel 44, and finally the main shaft 43 motor is started to drive the main shaft 43 to drive the grinding wheel 44 to rotate, thereby grinding the steel pipe.

[0103] Embodiment 2:

[0104] An automatic feeding and grinding device has the same characteristic structure and effect as the first embodiment, wherein Fig. 9 , 10As shown, a plurality of grinding wheels 44 are distributed along the length direction of the steel pipe, and gaps exist between the plurality of grinding wheels 44 .

[0105] The main shaft 43 is provided with external teeth 431 , and a sliding sleeve 45 is provided between the main shaft 43 and the grinding wheel 44 . The sliding sleeve 45 has tooth grooves matched with the external teeth 431 , and the external teeth 431 are embedded in the tooth grooves.

[0106] Bearings 46 are connected to both sides of the sliding sleeve 45 , a connecting plate 47 is connected to the left side of the bearing 46 , and the connecting plate 47 is threadedly connected to a transmission screw 48 .

[0107] In the actual grinding of steel pipes by the grinding wheel 44, it was found that when the grinding wheel 44 adopts an integral structure, due to its excessive length, not only will the overall weight of the grinding wheel 44 be too heavy, resulting in unstable rotation of the spindle 43, affecting the grinding effect, but also during grinding, the coolant cooling cannot fully penetrate between the grinding wheel 44 and the steel pipe, resulting in poor cooling effect. In addition, some of the grinding debris will also remain in the upper angle between the grinding wheel 44 and the steel pipe, affecting the grinding effect.

[0108] In order to solve the above three problems, the present application divides the grinding wheel 44 into multiple independent entities, which can effectively solve the above three problems.

[0109] Furthermore, in order to prevent the part of the steel pipe that is not in contact with the grinding wheel 44 from being unable to be ground, the present application provides external teeth 431 on the main shaft 43 and adds a sliding sleeve 45 to cooperate with the external teeth 431, so that when the steel pipe needs to be ground as a whole, the transmission screw 48 can be controlled to rotate and drive the connecting plate 47 to move left and right, thereby driving the bearing 46, the sliding sleeve 45 and the grinding wheel 44 to move along the length direction of the steel pipe, so that the grinding wheel 44 can grind the steel pipe as a whole.

[0110] Embodiment three:

[0111] A production line, wherein the automatic feeding and polishing device of embodiment one or two is provided.

[0112] like Figure 8 As shown, a mechanical rod 50 is provided on the upper left side of the grinding seat 40 , and the mechanical rod 50 is used to hook the ground steel pipe. A transportation line 60 is provided on the left side of the mechanical rod 50 , and the transportation line 60 is used to receive the steel pipe on the mechanical rod 50 .

[0113] After the steel pipe is polished, the telescopic cylinder 41 is started to drive the grinding wheel 44 to reset, and then the rotating disk 31 is started to drive the polished steel pipe to rotate to the left. At this time, the mechanical rod 50 is driven to rotate so that the mechanical rod 50 hooks the steel pipe, and the power supply to the electromagnet 331 is stopped, so that the clamping head 34 is reset under the action of the pressure spring, and the mechanical rod 50 is continued to rotate so that the mechanical rod 50 pushes the steel pipe to the transportation line 60 and moves to the next process.

[0114] Embodiment 4:

[0115] An automatic feeding and polishing method is applied to the automatic feeding and polishing device of the first or second embodiment or the production line of the third embodiment, wherein the method comprises the following steps:

[0116] The steel pipe to be polished is placed in the storage space 21 of the loading rack 20, and the steel pipe to be polished is guided into the blanking port 24 through the right guide plate 22 and the left guide plate 23 arranged obliquely in the storage space 21. After entering the bottom of the blanking port 24, the steel pipe to be polished remains motionless under the blocking of the movable baffle 26 and the limit baffle 27;

[0117] Then, the rotating disk 31 of the rotating fixing mechanism 30 is controlled to rotate so that the clamping head 34 on the rotating disk 31 and the steel pipe to be polished are on the same axis. At this time, the clamping head 34 is controlled to extend into the hole of the steel pipe to be polished so that the clamping head 34 clamps the steel pipe to be polished from both the front and rear sides to achieve clamping;

[0118] Then, the rotating disk 31 is controlled to rotate, thereby driving the clamping head 34 and the steel pipe to be polished to rotate. When the steel pipe to be polished rotates, the movable baffle 26 is squeezed to rotate. At this time, the gravity ball 273 in the limit baffle 27 is not restricted by the movable baffle 26. Under the action of gravity, the pressure head 274 is pulled down to press the blocking plate 28, so that the blocking plate 28 extends rightward into the blanking port 24, preventing the upper steel pipe to be polished from falling into the bottom of the blanking port 24;

[0119] When the steel pipe to be polished on the clamping head 34 rotates out of the blanking opening 24, the movable baffle 26 is not squeezed and resets under the action of the bias spring, so that the movable baffle 26 pushes the gravity ball 273 to reset upward, and then the blocking plate 28 is reset under the action of the reset spring, allowing the blocked steel pipe to be polished to enter the bottom of the blanking opening 24, so that the clamping head 34 can clamp it next time;

[0120] Finally, after the clamping head 34 drives the steel pipe to be polished onto the polishing seat 40 , the clamping head 34 is controlled to drive the steel pipe to rotate, so that the polishing seat 40 polishes the steel pipe.

[0121] In the above steps, the specific steps of clamping the steel pipe to be polished by the clamping head 34 are as follows: the electromagnet 331 of the thrust head 33 is energized, and the electromagnet 331 pushes the clamping head 34 to clamp the steel pipe to be polished according to the principle of repulsion between the electromagnet 331 and the magnet 341 on the clamping head 34. Then, the electromagnet 331 is under pressure, and the pressure block 344 under the magnet 341 presses down the side abutment block 345, so that the side abutment block 345 extends out of the clamping head 34 and abuts against the inner tube wall of the steel pipe to be polished, thereby clamping and fixing the steel pipe to be polished;

[0122] The specific steps of driving the steel pipe to rotate by the clamping head 34 are as follows: after the clamping head 34 is pushed by the electromagnet 331, it drives the cover plate 342 to slide along the thrust head 33, so that the passive gear 343 on the cover plate 342 is engaged with the driving gear 321. At this time, after starting the power motor 32 to drive the driving gear 321 to rotate, the passive gear 343 drives the clamping head 34 and the steel pipe on the clamping head 34 to rotate under the drive of the driving gear 321, so that the grinding seat 40 is convenient for grinding the steel pipe.

[0123] When the grinding seat 40 is grinding the steel pipe, the telescopic cylinder 41 is first started to push the grinding wheel 44 on the power seat 42 close to the steel pipe so that the steel pipe fits the grinding wheel 44, and finally the main shaft 43 motor is started to drive the main shaft 43 to drive the grinding wheel 44 to rotate, thereby grinding the steel pipe.

[0124] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. An automatic feeding and grinding device, wherein: The invention comprises a base, wherein the base comprises: A loading rack, the loading rack is installed on the right side of the base, the loading rack has a storage space for storing the steel pipes to be polished, and the loading rack also has: A right guide plate, the right guide plate being obliquely mounted on the right side wall of the storage space; A left guide plate, the left guide plate being obliquely mounted on the left wall of the storage space, and a drop opening for the steel pipe to be polished to drop is formed between the left guide plate and the right guide plate; A fixed beam, the fixed beam is located under the right guide plate, and the fixed beam is horizontally placed at the front and rear sides of the loading rack; A movable baffle, the movable baffle is rotatably connected to the fixed beam, a bias spring is provided at the rotation connection of the movable baffle, and the movable baffle is located below the blanking port; A limit baffle, the limit baffle is installed under the left guide plate, and the limit baffle is provided with: A sliding rod, the sliding rod is slidably connected to the limit baffle; A gravity ball, the gravity ball is connected to the lower end of the sliding rod, and the movable baffle resists and limits the movement of the gravity ball; A pressure head connected to the upper end of the sliding rod; A blocking plate, wherein the blocking plate is slidably embedded in the limit baffle, the contact surface between the blocking plate and the pressure head is wedge-shaped, and a return spring is provided between the blocking plate and the limit baffle; A rotating and fixing mechanism, which is installed at the front and rear sides of the loading rack, and has a rotating disk, on which a clamping head with telescopic and rotating functions is installed; A grinding seat is installed on the lower left side of the loading rack.

2. The automatic feeding and polishing device according to claim 1, wherein: The length direction of the blanking opening is adapted to the length of the steel pipe to be polished, and the width of the blanking opening is not less than the diameter of the steel pipe to be polished.

3. The automatic feeding and polishing device according to claim 1, wherein: The right end surface of the limit baffle is a guide surface inclined toward the lower left side.

4. The automatic feeding and polishing device according to claim 1, wherein: A tension spring is provided between the sliding rod and the limit baffle, the tension spring is in a stretched state, the elastic force of the tension spring is smaller than that of the bias spring, and the elastic force of the tension spring is larger than that of the reset spring.

5. The automatic feeding and polishing device according to claim 1, wherein: The rotating fixing mechanism also has a power motor, which is installed on the rotating disk. The rotating disk is connected to the driving motor and is driven to rotate by the driving motor. The power motor is connected to a driving gear. A thrust head is provided on the side of the power motor. The clamping head is telescopically connected to the thrust head through a covering plate. An electromagnet is provided on the front end surface of the thrust head, and the electromagnet is connected to a power supply. A magnet is provided on the rear end surface of the clamping head. A passive gear matching the driving gear is provided on the outer surface of the covering plate.

6. The automatic feeding and polishing device according to claim 5, wherein: A pressure spring is arranged between the thrust head and the clamping head.

7. The automatic feeding and polishing device according to claim 5, wherein: A pressure block is installed under the magnet stone, and a side support block is slidably connected to the side of the clamping head. A reset elastic member is provided between the side support block and the clamping head, and the pressure block is against the side support block. The contact surface between the pressure block and the side support block is wedge-shaped.

8. The automatic feeding and polishing device according to claim 1, wherein: The grinding seat is provided with a telescopic cylinder and a power seat which is slidably connected thereto. The telescopic cylinder is connected to the power seat. A main shaft is rotatably connected to the power seat. The main shaft is connected to a main shaft motor and is driven to rotate by the main shaft motor. A grinding wheel is connected to the main shaft.

9. A production line, wherein: An automatic feeding and grinding device as described in any one of claims 1 to 8.

10. The production line according to claim 9, wherein: A mechanical rod is provided on the upper left side of the grinding seat, and the mechanical rod is used to hook the polished steel pipe. A transportation line is provided on the left side of the mechanical rod, and the transportation line is used to receive the steel pipe on the mechanical rod.

11. An automatic feeding and grinding method, wherein: The automatic feeding and grinding method is based on the automatic feeding and grinding device described in any one of claims 1 to 8 above, and the automatic feeding and grinding method comprises the following steps: The steel pipe to be polished is placed in the storage space of the loading rack, and the steel pipe to be polished is guided into the blanking port through the right guide plate and the left guide plate arranged obliquely in the storage space. After entering the bottom of the blanking port, the steel pipe to be polished remains motionless under the blocking of the movable baffle and the limit baffle; Then, the rotating disk of the rotating fixing mechanism is controlled to rotate so that the clamping head on the rotating disk and the steel pipe to be polished are on the same axis. At this time, the clamping head is controlled to extend into the hole of the steel pipe to be polished so that the clamping head clamps the steel pipe to be polished from both the front and rear sides to achieve clamping; Then, the rotating disk is controlled to rotate, thereby driving the clamping head and the steel pipe to be polished to rotate. When the steel pipe to be polished rotates, the movable baffle is squeezed to rotate. At this time, the gravity ball in the limit baffle is not restricted by the movable baffle. Under the action of gravity, the pressure head is pulled down to press the baffle plate, causing the baffle plate to extend to the right into the blanking port, preventing the upper steel pipe to be polished from falling into the bottom of the blanking port; When the steel pipe to be polished on the clamping head rotates out of the blanking port, the movable baffle is not squeezed and resets under the action of the bias spring, so that the movable baffle pushes the gravity ball to reset upward, and then the blocking plate is reset under the action of the reset spring, allowing the blocked steel pipe to be polished to enter the bottom of the blanking port so that the clamping head can clamp it next time; Finally, when the clamping head drives the steel pipe to be polished onto the polishing seat, the clamping head is controlled to drive the steel pipe to rotate, thereby causing the polishing seat to polish the steel pipe.

12. The automatic feeding and polishing method according to claim 11, wherein: In the above steps, the specific steps of clamping the steel pipe to be polished by the clamping head are as follows: the electromagnet of the thrust head is energized, and the electromagnet pushes the clamping head to clamp the steel pipe to be polished according to the principle of repulsion between the electromagnet and the magnet on the clamping head. Then, the electromagnet is under pressure, and the pressure block under the magnet presses down the side abutment block, so that the side abutment block extends out of the clamping head and abuts against the inner tube wall of the steel pipe to be polished, thereby clamping and fixing the steel pipe to be polished; The specific steps of driving the steel pipe to rotate by the clamping head are as follows: after the clamping head is pushed by the electromagnet, the cover plate is driven to slide along the thrust head, so that the passive gear on the cover plate is engaged with the driving gear. At this time, after the power motor is started to drive the driving gear to rotate, the passive gear drives the clamping head and the steel pipe on the clamping head to rotate under the drive gear, so that the grinding seat can grind the steel pipe conveniently.

13. The automatic feeding and polishing method according to claim 11, wherein: When the grinding seat is grinding the steel pipe, the telescopic cylinder is first started to push the grinding wheel on the power seat close to the steel pipe so that the steel pipe fits the grinding wheel. Finally, the spindle motor is started to drive the spindle to drive the grinding wheel to rotate, thereby grinding the steel pipe.

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