A metal bar peeling apparatus

Abstract

The present application relates to the technical field of metal processing, and particularly relates to a metal rod peeling equipment, which comprises a rack, a calender assembly is further installed on the rack, the calender assembly comprises upper, left, lower and right calender rollers in the front-rear direction, the upper, left, lower and right calender rollers are distributed in a circumferential array and form four inscribed circle pressing points for the metal rod after peeling, the four inscribed circle pressing points are on the same calender inscribed circle path, a peeling cutter assembly for cutting the surface of the metal rod is arranged on the front side of the calender assembly, and a chip stopping mechanism for preventing the metal chips generated in the peeling process from moving backward is arranged between the peeling cutter assembly and the calender assembly, so that the peeling effect is better.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to a metal rod peeling device. Background Technology

[0002] Metal rods have a wide range of applications and the demand is increasing. However, during the production process, metal rods will develop an oxide layer on their surface, which needs to be removed to remove these surface defects before they can be used normally. Of course, there are many types of peeling equipment available.

[0003] For example, Chinese Patent Application No. 201820808325.6 discloses a peeling and calendering machine, including a frame, a mounting frame fixed on the frame, a rotating blade holder rotatably mounted on the mounting frame, and a peeling mechanism for peeling steel bars on the rotating blade holder; the rotating blade holder has an axially formed through-hole one for the steel bar to pass through, and the peeling mechanism faces the steel bar passing through the through-hole one; a calendering table is rotatably mounted on the mounting frame, connected to the rotating blade holder, and a rolling mechanism for rolling the steel bar is mounted on the calendering table; the calendering table has an axially formed through-hole two connected to the through-hole one; the frame is equipped with a feeding mechanism for feeding the steel bar into the through-hole one and a discharging mechanism for pulling the steel bar out of the through-hole two. However, in existing patented technologies, if the metal shavings are too long during peeling, they can easily come into contact with the calendering roller, causing damage to the metal bar and the calendering roller, which is not conducive to smooth production or the production of high-quality products. Summary of the Invention

[0004] The purpose of this invention is to provide a metal rod peeling device with better peeling effect.

[0005] The above-mentioned objective of the present invention is achieved through the following technical solution: a metal rod peeling device, comprising a frame, on which a calendering assembly is also installed and connected. The calendering assembly includes an upper calendering roller, a left calendering roller, a lower calendering roller, and a right calendering roller axially in the front-back direction. The upper calendering roller, the left calendering roller, the lower calendering roller, and the right calendering roller are arranged in a circumferential array to form four inscribed circle pressing points for calendering and shaping the peeled metal rod. The four inscribed circle pressing points are located on the same calendering inscribed circle path. A peeling knife assembly for cutting the surface of the metal rod is provided on the front side of the calendering assembly. A chip-blocking mechanism for preventing metal chips generated during the peeling process from traveling backward is provided between the peeling knife assembly and the calendering assembly.

[0006] As a preferred embodiment of the present invention, the chip-blocking mechanism includes a circumferential blocking ring located between the peeling knife assembly and the calendering assembly. The circumferential blocking ring can block at least 20% of the cross-sectional area of ​​the circumferentially spaced region between two adjacent calendering rollers. The center of the circumferential blocking ring surrounds a passage circular hole for the peeled metal rod to travel backward. The diameter of the passage circular hole is larger than the diameter of the calendering inscribed circle, and the passage circular hole and the calendering inscribed circle are coaxial.

[0007] As a preferred embodiment of the present invention, the peeling knife assembly includes an upper left blade, a lower left blade, a lower right blade, and an upper right blade. The upper left blade, lower left blade, lower right blade, and upper right blade are arranged in a circumferential array to form four inscribed circular peeling points for peeling the metal rod. The four inscribed circular peeling points are located on the same peeling inscribed circle. The upper left blade, lower left blade, lower right blade, and upper right blade are staggered with the upper pressure roller, left pressure roller, lower pressure roller, and right pressure roller in the circumferential direction.

[0008] As a preferred embodiment of the present invention, four baffle plates are integrally connected in the circumferential direction on the circumferential baffle ring, namely upper left, lower left, lower right and upper right. The plate surface of the baffle plates faces the front-back direction. The part where two adjacent baffle plates are integrally connected in the circumferential direction forms a semi-circular recessed limiting groove that is recessed towards the axis to position the front end of each calendering roller.

[0009] As a preferred embodiment of the present invention, the upper left baffle plate is inclined at the upper left, the lower left baffle plate is inclined at the lower left, the lower right baffle plate is inclined at the lower right, and the upper right baffle plate is inclined at the upper right. A front mounting connection plate for mounting and connecting with the front side of the frame is integrally connected to the side of the baffle plate in the clockwise direction.

[0010] As a preferred embodiment of the present invention, the blocking plate is integrally connected to a rearwardly extending reinforcing guide plate on the edge of the passage hole, and all the reinforcing guide plates are circumferentially spaced and arranged in a circumferential array.

[0011] As a preferred embodiment of the present invention, the reinforcing and extending guide plate is provided with radially penetrating air extraction and dust collection holes spaced apart in the front-back direction, the air extraction and dust collection holes extending in the circumferential direction in a rectangular strip shape, and an exhaust pipe communicating with the air extraction and dust collection holes is provided on the outer side of the reinforcing and extending guide plate.

[0012] As a preferred embodiment of the present invention, the reinforcing extension guide plate is located outside the inner tangent circle of the calendering, and a cold air gun that can blow forward and travel along the inner surface of the reinforcing extension guide plate is provided on the rear side of the reinforcing extension guide plate. The cold air gun is a pulse jet with the airflow crossing the suction and chip removal hole.

[0013] As a preferred embodiment of the present invention, the rear end of the reinforcing extension guide plate is integrally connected to a rear mounting connection plate that can be installed on the rear side of the frame, and the reinforcing extension guide plate has a downwardly arc-shaped recessed, front-to-back extending air-guiding reinforcing groove for guiding the blowing of the cold air gun nozzle.

[0014] As a preferred embodiment of the present invention, the upper left cutter head, the lower left cutter head, the lower right cutter head, and the upper right cutter head are mounted on the front side of the frame via a cutter handle. At least two front-side clamping guide wheels arranged in a front-back pattern are also mounted on the cutter handle in front of the corresponding cutter head. The upper left cutter head, the lower left cutter head, the lower right cutter head, and the upper right cutter head correspond one-to-one with the corresponding baffle plate.

[0015] The beneficial effects of this invention are: the equipment of this application has a good chip-removing effect, which can effectively remove iron chips of both large and small sizes, resulting in a good peeling effect on the metal rod. It provides better protection for the equipment and the metal rod, making processing safer and more reliable, and also improving efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the peeling device from the front view in the embodiment; Figure 2 yes Figure 1 A three-dimensional structural diagram of the central structure after the chip-blocking mechanism has been removed; Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure from an upward perspective; Figure 4 yes Figure 1 A three-dimensional structural diagram from the rear view of the central structure; Figure 5 yes Figure 1 A three-dimensional structural diagram of the chip-blocking mechanism; Figure 6 This is a schematic diagram illustrating the formation principle of the peeling inscribed circle of the peeling device in this embodiment; Figure 7 This is a schematic diagram illustrating the formation principle of the calendered inscribed circle of the peeling device in this embodiment; Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure after removing a portion of the calendering roller frame; Figure 9 yes Figure 5 The chip-blocking mechanism in the design is a further optimized three-dimensional chip-blocking mechanism. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0019] Examples, such as Figure 1-9 As shown, a metal rod peeling device includes a frame, on which a calendering assembly is also installed. The calendering assembly includes an upper calendering roller 11, a left calendering roller 12, a lower calendering roller 13, and a right calendering roller 14 arranged axially in the front-back direction. These four calendering rollers are actually arranged in the four cardinal directions (north, south, west, east), that is, the upper calendering roller 11, left calendering roller 12, lower calendering roller 13, and right calendering roller 14 are arranged in a circumferential array to form four inscribed circular pressing points for calendering and shaping the peeled metal rod. Moreover, the four inscribed circular pressing points are located within the same calendering inscribed circle 11. In this embodiment, four calendering rollers are used for positioning and calendering along the 11-path. The lowermost part of the upper calendering roller 11 is the upper inscribed circle pressing point, the rightmost part of the left calendering roller 12 is the left inscribed circle pressing point, the uppermost part of the lower calendering roller 13 is the lower inscribed circle pressing point, and the leftmost part of the right calendering roller 14 is the right inscribed circle pressing point. The calendering inscribed circle 1111 path is a virtual circular path that passes through the above four inscribed points. It is also the rolling path for calendering the metal rod, since the metal rod is rolled during the peeling process. The front side of the calendering assembly is equipped with a peeling blade assembly for cutting the surface of the metal rod. A chip-blocking mechanism is provided between the peeling blade assembly and the calendering assembly to prevent metal chips generated during the peeling process from traveling backward. This is because there are relatively large circumferential gaps between the calendering rollers during the peeling process, and these gaps are precisely where the peeling chips accumulate, resulting in a large amount of metal chips of both large and small sizes. The chip-blocking mechanism effectively blocks these chips, preventing them from entering the pressure rollers backward.

[0020] The specific implementation scheme is as follows: the chip blocking mechanism includes a circumferential blocking ring 2 located between the peeling knife assembly and the calendering assembly. The circumferential blocking ring 2 can block at least 20% of the cross-sectional area of ​​the circumferential interval region between two adjacent calendering rollers. The cross-sectional area of ​​the circumferential interval region refers to the portion of the area between the calendering inscribed circles 1111 of the four calendering rollers and their circumscribed circles, which is perpendicular to the axial direction. This portion of the cross-sectional area should be blocked as much as possible, so it should not only block 20%, but more preferably 40-50%, and should be as close as possible to the position of the calendering inscribed circle 1111, because this is relatively close to the peeling position in the radial direction. Here, circumferential refers to the circumference of the calendering inscribed circle 1111, or the circumference of the metal rod, and the axial direction is also the axial direction of the calendering inscribed circle 1111, that is, the front-back direction. Furthermore, the center of the circumferential blocking ring 2 surrounds and forms a passage circular hole 20 for the metal rod to move backward after peeling. The diameter of the passage circular hole 20 is larger than the diameter of the calendering inscribed circle 1111, and the passage circular hole 20 and the calendering inscribed circle 1111 are coaxial. This setting facilitates the passage of the metal rod after peeling without affecting the calendering of the metal rod by the calendering roller. Generally, the difference between the diameter of the passage circular hole 20 and the diameter of the calendering inscribed circle 1111 is controlled within 5 mm, because the peeling thickness is not very large. In fact, it is best to be within 2-3 mm, because there will be a gap here, and it will be easy for small metal chips to enter. Therefore, the above setting is used.

[0021] Furthermore, the peeling knife assembly includes an upper left blade 31, a lower left blade 32, a lower right blade 33, and an upper right blade 34. The upper left blade 31, lower left blade 32, lower right blade 33, and upper right blade 34 are arranged in a circumferential array to form four inscribed circular peeling points for peeling the metal rod. Existing blades can be used, and the blades can be determined according to the metal material. For example, the blades used for surface treatment of copper rods and iron rods are different, and the determination is based on the actual metal material. Furthermore, the four inscribed peeling points are located on the same inscribed peeling circle 3333, which is similar to the pressing point of the aforementioned calendering roller. However, the inscribed peeling points are located on the cutting edge of the blade. Moreover, the upper left blade 31, lower left blade 32, lower right blade 33, and upper right blade 34 are staggered with the upper calendering roller 11, left calendering roller 12, lower calendering roller 13, and right calendering roller 14 in the circumferential direction, that is, the blade is slightly forward and the calendering roller is slightly backward.

[0022] Preferably, the circumferential blocking ring 2 has four blocking plates 21 integrally connected circumferentially at the upper left, lower left, lower right, and upper right. The plates of the blocking plates 21 face the front-to-back direction. The portion where two adjacent blocking plates 21 are integrally connected forms a semi-circular recessed limiting groove 210 that is recessed towards the axis to position each calendering roller. The circumferential blocking ring 2 can be made of steel. A semi-circular arc-shaped step z0 is formed on the shaft frame z of the calendering roller near the front end of the calendering roller. The semi-circular arc-shaped step z0 can be used to radially insert and match with the semi-circular recessed limiting groove 210 for positioning. The blocking plates 21 can directly block iron filings, and the four cutting heads also correspond one-to-one with the four blocking plates 21.

[0023] Furthermore, the upper left baffle plate 21 is inclined at the upper left, that is, inclined from the left light-pressing roller towards the upper light-pressing roller; the lower left baffle plate 21 is inclined at the lower left, that is, inclined from the left light-pressing roller towards the lower light-pressing roller; the lower right baffle plate 21 is inclined at the lower right, that is, inclined from the right light-pressing roller towards the lower light-pressing roller; and the upper right baffle plate 21 is inclined at the upper right, inclined from the right light-pressing roller towards the upper light-pressing roller. The baffle plate 21 is integrally connected to a front mounting connecting plate 22 for mounting and connecting with the front side of the frame on the clockwise side. The front mounting connecting plate 22 can be rectangular or roughly rectangular and has a through mounting positioning hole 220. The mounting positioning hole 220 is to facilitate the front mounting connecting plate 22 and the frame to be locked and fixed by bolts or the like. The shape of each baffle plate is irregular but similar to a rectangle, except that there are some curved edges. The side near the passage hole 20 forms a curved edge, which is the shape of the edge of the passage hole 20. The position near the semi-circular recessed limiting groove 210 also has a curved edge, because it is necessary to form part of the groove edge of the semi-circular recessed limiting groove 210.

[0024] Preferably, the baffle plate 21 has a rearwardly extending reinforcing guide plate 23 integrally connected to the edge of the passage hole 20. All reinforcing guide plates 23 are circumferentially spaced and arranged in a circular array. The integral connection position of the reinforcing guide plates 23 is close to the arc-shaped edge of the baffle plate 21 near the passage hole 20, and the number of reinforcing guide plates 23 and the baffle plate 21 are the same, with their positions corresponding one-to-one. Preferably, the shape of the reinforcing guide plate 23 is arc-shaped, meaning both the radial and inner surfaces are arc-shaped, or at least the surface near the axis is arc-shaped, while the outer side can be planar rectangular. The curvature should be as consistent as possible with the curvature of the passage hole 20, resulting in better structural integration and better removal of metal chips. The surface of the reinforcing guide plate 23 near the axis and the edge of the passage hole 20 should be kept as flat as possible. The reinforcing guide plate 23 serves to improve structural strength and, through further structural optimization, better block metal chips.

[0025] Preferably, the reinforced extension guide plate 23 is provided with radially penetrating suction holes 230 spaced apart in the front-back direction. The suction holes 230 extend circumferentially in a rectangular strip shape. An exhaust duct 231 communicating with the suction holes 230 is provided on the outer side of the reinforced extension guide plate 23. The exhaust duct 231 needs to be made of metal because it needs to suck up fine metal shavings. The suction holes 230 need to be relatively small, for example, 2mm*4mm, with the longer side in the circumferential direction and the wider side in the front-back direction. The wider side should be as small as possible. The diameter is no more than 3 mm, and one exhaust duct 231 can correspond to multiple exhaust and chip removal holes 230. That is, the inlet of one exhaust duct 231 will cover multiple exhaust and chip removal holes 230. Of course, the exhaust duct 231 is located on the side of the exhaust and chip removal holes 230 away from the axis, or it can be said to be on the radially outer side of the reinforcing extension guide plate 23. Of course, since the outer back side of the reinforcing extension guide plate 23 may be flat or curved, the outlet of the exhaust duct 231 needs to match and fit against the shape of this side surface and be sealed. Multiple exhaust and chip removal holes 230 can be set. The entire reinforcing extension guide plate 23 can be in the shape of a filter screen, and these exhaust and chip removal holes 230 are similar to filter holes. The exhaust duct 231 can be connected to the existing exhaust equipment.

[0026] Furthermore, the reinforcing extension guide plate 23 is located outside the calendering inscribed circle 1111, meaning there is a radial gap between the reinforcing extension guide plate 23 and the calendering inscribed circle 1111. This ensures that the calendering after peeling is not affected. However, this gap may occasionally allow larger or longer metal chips to enter. Also, during the calendering process, some metal chips of varying sizes may appear if the peeling was not complete. Small metal chips can be removed through the suction holes 230, while larger metal chips can be drawn and adhered to the radially inner surface of the reinforcing extension guide plate 23 by the aforementioned suction holes 230. The baffle plate 21 can block most of the metal chips from reaching the rear, but the aforementioned situation may still occur. Therefore, through optimization, large metal chips will not interfere with the calendering of the metal rod. However, large metal chips need to be dealt with promptly. Therefore, the following optimization is needed: the reinforcing extension guide plate... A cold air gun 4 is provided on the rear side of 23, which blows forward along the inner surface of the reinforced extension guide plate 23. The cold air gun 4 is a pulse jet with the airflow crossing the suction hole 230. The design of the cold air gun 4 can effectively blow away metal chips forward. Moreover, due to the suction of the suction hole 230, it can play a buffering role. The cold air gun 4 has a strong air force and can also blow large metal chips forward relatively stably without rapidly blowing away metal chips and causing some external interference. In addition, the cold air gun 4 has a cooling effect, so that the heat generated by peeling and calendering is partially removed, which is also beneficial to production. The pulse jet is to reduce production interference and save costs, because it does not need to blow continuously. The probability of large metal chips entering is relatively small, because the front side can effectively block large metal chips. The pulse jet is more suitable, which is to spray intermittently for a period of time. This can be adjusted in time according to the type and size of the metal rod being processed.

[0027] Preferably, the rear end of the reinforced extension guide plate 23 is integrally connected to the rear mounting connection plate 24 that can be installed on the rear side of the frame, so that the entire metal chip blocking structure is more three-dimensional, has good structural strength, and is more stable and reliable in use.

[0028] Furthermore, the reinforced extension guide plate 23 has a downward arc-shaped recess that extends back and forth to guide the airflow of the cooling air gun 4 nozzle. This is to better deliver airflow and also to strengthen the structure. Two or more air-guiding reinforcing grooves 40 can be provided.

[0029] Preferably, the upper left cutter head 31, lower left cutter head 32, lower right cutter head 33, and upper right cutter head 34 are mounted on the front side of the frame via a cutter handle 30. The existing structure can be used for the installation and connection of the cutter heads and handles. At least two front-side clamping guide wheels 301 are also mounted on the cutter handle 30, positioned in front of the corresponding cutter head. These four front-side clamping guide wheels 301 press against the outer side of the initial metal rod, ensuring a more stable and reliable feed. Furthermore, the upper left cutter head 31, lower left cutter head 32, lower right cutter head 33, and upper right cutter head 34 correspond one-to-one with the corresponding baffle plates 21, meaning that the four baffle plates are circumferentially distributed in the same way as the four cutter heads, resulting in a better blocking effect after peeling.

[0030] When in use, the rolling device that drives the metal rod to roll at the front is required. Existing equipment can be used. Of course, the calendering roller can also be an actively rotating roller. Because the cutter head in this application is fixed, while the prior art also has a rotating cutter holder for peeling. The main purpose is actually to rotate and peel.

[0031] The frame can be constructed in many ways. For example, it is generally constructed using an outer support frame, within which four mounting brackets 51 are embedded and fixed. These four mounting brackets 51 are located at the upper left, lower left, lower right, and upper right positions, respectively, forming four mounting spaces 52 in all directions. These four mounting spaces 52 allow the four calendering rollers to extend radially into the correct positions and be positioned. In other words, the calendering rollers are movable axially and radially. The calendering rollers are mounted on the inner radial side of the shaft frame z near the tangent circle 1111 of the calendering roller. In addition, in this application, it is preferred that a semi-circular arc-shaped step z0 is formed on the shaft frame z near the front end of the calendering roller, which can be used to radially insert and match with the semi-circular recessed limiting groove 210 for positioning. Of course, the mounting brackets 51 can be existing molds or frames that surround and form a large circular processing area in the middle.

[0032] Therefore, when installing the structure of this application, the chip-blocking mechanism needs to be installed and fixed on the frame first. The four mounting frames 51 can be equipped with corresponding mounting holes at the front and rear positions. If the chip-blocking mechanism has a structure of a blocking plate 21, a reinforcing extension guide plate 23, and a rear mounting connection plate 24, the mounting space 52 is very useful because the positions of the blocking plate 21 and the rear mounting connection plate 24 are exactly intersecting in the circumferential direction. It doesn't matter if the blocking plate 21, the reinforcing extension guide plate 23, and the rear mounting connection plate 24 are an integral structure. The entire chip-blocking mechanism moves from the front of the frame to the rear. The rear mounting connection plate 24 is in the position of the mounting space 52 and then moves to the rear. When the rear mounting connection plate 24 is behind the mounting frame 51, the entire chip-blocking mechanism can rotate. The blocking plate 21 is in front of the mounting frame 51. In this way, the blocking plate 21 and the rear mounting connection plate 24 can be fixed to the corresponding mounting points on the front and rear sides of the mounting frame 51 by means of bolts or other methods. Then, the calendering roller and the tool holder are installed. The calendering roller can be installed onto the shaft bracket z first. Positioning is achieved by moving the shaft bracket z radially so that the semi-circular arc step z0 abuts against the semi-circular recessed limiting groove 210. The shaft bracket z is then fixed to two adjacent mounting frames 51 using existing methods. The tool holder can also move radially, but it is located on the front side of the mounting frame 51. The tool holder can move radially on the front side of the mounting frame 51. Once it reaches the predetermined position, it is fixed to the front side of the mounting frame 51 using existing methods. The front side of the mounting frame 51 can have some installation adjustment grooves or adjustment holes to facilitate the adjustment and installation of the tool holder. The front clamping guide wheel 301 and the tool head can be pre-installed on the tool holder. This completes the basic installation of the entire structure. During operation, the metal rod enters the peeling inscribed circle 3333 from the front to the back and rotates to peel. The travel speed is relatively slow to ensure thorough peeling. The peeled metal segment enters the circumferential blocking ring 2 and then enters the calendering inscribed circle 1111, moving forward for calendering and output. During this process, the entire chip-blocking structure can block and process various metal chips, and the entire structure is also more helpful for calendering, producing high-quality final metal rod products with guaranteed efficiency and safety. The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A metal rod peeling device, comprising a frame, characterized in that, The frame is also equipped with a calendering assembly, which includes an upper calendering roller (11), a left calendering roller (12), a lower calendering roller (13), and a right calendering roller (14) with the axial direction in the front-back direction. The upper calendering roller (11), the left calendering roller (12), the lower calendering roller (13), and the right calendering roller (14) are arranged in a circumferential array to form four inscribed circle pressing points for calendering and shaping the peeled metal rod. The four inscribed circle pressing points are located on the same calendering inscribed circle (1111) path. A peeling knife assembly for cutting the surface of the metal rod is provided on the front side of the calendering assembly. A chip-blocking mechanism for preventing metal chips generated during the peeling process from moving backward is provided between the peeling knife assembly and the calendering assembly. The chip-blocking mechanism includes a circumferential blocking ring (2) located between the peeling knife assembly and the calendering assembly. The circumferential blocking ring (2) can block at least 20% of the cross-sectional area of ​​the circumferential interval region between two adjacent calendering rollers. The center of the circumferential blocking ring (2) surrounds and forms a passage circular hole (20) for the peeled metal rod to move backward. The diameter of the passage circular hole (20) is larger than the diameter of the calendering inscribed circle (1111), and the passage circular hole (20) and the calendering inscribed circle (1111) are coaxial. The peeling knife assembly includes an upper left blade (31), a lower left blade (32), a lower right blade (33), and an upper right blade (34). The upper left blade (31), lower left blade (32), lower right blade (33), and upper right blade (34) are arranged in a circumferential array to form four inscribed circular peeling points for peeling the metal rod. The four inscribed circular peeling points are located on the same peeling inscribed circle (3333). The upper left blade (31), lower left blade (32), lower right blade (33), and upper right blade (34) are staggered with the upper pressure roller (11), left pressure roller (12), lower pressure roller (13), and right pressure roller (14) in the circumferential direction. The circumferential blocking ring (2) forms four blocking plates (21) that are integrally connected in the circumferential direction: upper left, lower left, lower right and upper right. The plate surface of the blocking plate (21) faces the front and back direction. The part where two adjacent blocking plates (21) are integrally connected in the circumferential direction forms a semi-circular recessed limiting groove (210) that is recessed towards the axis for positioning of each calendering roller.

2. The metal rod peeling device according to claim 1, characterized in that, The upper left baffle (21) is tilted at the upper left, the lower left baffle (21) is tilted at the lower left, the lower right baffle (21) is tilted at the lower right, and the upper right baffle (21) is tilted at the upper right. The baffle (21) is integrally connected to a front mounting connection plate (22) for mounting and connecting with the front side of the frame on the clockwise side.

3. The metal rod peeling device according to claim 2, characterized in that, The blocking plate (21) has a rearwardly extending reinforcing guide plate (23) integrally connected to the edge of the passage hole (20). All reinforcing guide plates (23) are distributed circumferentially and arranged in a circular array.

4. The metal rod peeling device according to claim 3, characterized in that, The reinforced extension guide plate (23) is provided with air extraction and chip removal holes (230) that are spaced apart in the front and rear directions and penetrate in the radial direction. The air extraction and chip removal holes (230) extend in the circumferential direction in the shape of rectangular strips. An exhaust pipe (231) communicating with the air extraction and chip removal holes (230) is provided on the outside of the reinforced extension guide plate (23).

5. A metal rod peeling device according to claim 4, characterized in that, The reinforced extension guide plate (23) is located outside the inner circle (1111) of the calendering. A cold air gun (4) is provided on the rear side of the reinforced extension guide plate (23) that can blow forward and travel along the inner surface of the reinforced extension guide plate (23). The cold air gun (4) is a pulse jet and the airflow crosses the suction hole (230).

6. The metal rod peeling device according to claim 5, characterized in that, The rear end of the reinforcing extension guide plate (23) is integrally connected to the rear mounting connection plate (24) that can be installed on the rear side of the frame. The reinforcing extension guide plate (23) has a downward arc-shaped recess that extends back and forth to guide the airflow of the nozzle of the cooling air gun (4).

7. The metal rod peeling device according to claim 1, characterized in that, The upper left cutter head (31), lower left cutter head (32), lower right cutter head (33) and upper right cutter head (34) are mounted on the front side of the frame via a cutter handle (30). At least two front-side clamping guide wheels (301) arranged in a front-back arrangement are also mounted on the cutter handle (30) in front of the corresponding cutter head. The upper left cutter head (31), lower left cutter head (32), lower right cutter head (33) and upper right cutter head (34) correspond one-to-one with the corresponding baffle plate (21).

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