CN220739355U - Quick shaping cold header - Google Patents

Abstract

The utility model discloses a rapid forming cold header, which comprises a header press and a back beating seat arranged in the right side of the upper end of the header press, wherein the back beating seat is rotationally connected in the header press through a support column and a power mechanism, a fixed die seat is arranged on the left side of the back beating seat, a flattening sleeve is arranged between the fixed die seat and four straightening guide wheels, so that a header material can be flattened and straightened through a plurality of limiting pressing blocks in the flattening sleeve and a plurality of flattening balls in the limiting pressing blocks before entering the inside of the fixed die seat, the header material can be flattened and straightened in a plurality of directions in the flattening sleeve, the header material entering the inside of the fixed die seat is ensured to be more straight, offset is prevented from being generated between the header material and a movable die and the fixed die after the header material is cut off, the production quality and the qualification rate are ensured, the position of the limiting pressing blocks can be adjusted through a positioning screw sleeve outside the pressing sleeve, and the flattening sleeve can flatten and straighten the header materials with different diameters, and the applicability is stronger.

Description

Quick shaping cold header

Technical Field

The utility model relates to the technical field of cold heading machines, in particular to a rapid prototyping cold heading machine.

Background

The cold header is a device for extrusion molding of blanks through a movable die and a fixed die, is commonly used for producing fasteners such as bolts, nuts and the like, and utilizes the plastic deformation capability of metal to straighten, cut and press the metal pier material at normal temperature, so that the metal pier material is pressed into a product with a specific shape in a die cavity, and has the characteristics of reliable performance, high efficiency, stable product quality and the like.

However, the existing cold header generally adopts a plurality of groups of pairs of wheels to flatten and straighten the pier material, and because the pairs of wheels flatten and straighten the pier material through a gap between two wheels, the contact point between the pairs of wheels and the pier material is smaller, and the pairs of wheels flatten and straighten the pier material only from two directions, so that the pier material is difficult to straighten, the bent pier material is difficult to grasp by clamping jaws, and offset is generated between the bending pier material and an axis between a movable die and a fixed die, so that the pier pressing is failed, and the quality and the production qualification rate of products are affected.

Disclosure of Invention

The utility model provides a rapid forming cold header, which aims to solve the problems that the cold header provided in the background art is difficult to straighten the pier material, is not easy to grasp, is easy to deviate from a movable die and a fixed die and influences the quality and the qualification rate of products by flattening and straightening the pier material through a plurality of groups of pairs of wheels.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a rapid prototyping cold header comprising:

the upsetting press and the rear shooting seat are arranged in the right side of the upper end of the upsetting press;

the rear clapping seat is rotationally connected inside the pier press through a supporting column and a power mechanism, a fixed die seat is arranged on the left side of the rear clapping seat and fixedly connected inside the pier press, four straightening guide wheels are arranged on the rear side of the rear clapping seat, pier materials are in transmission connection between the four straightening guide wheels and are rotationally connected to the front end of an adjusting mechanism positioned on the right side of the rear end of the pier press through a rotating shaft, a guide hopper is fixedly connected inside the front end of the pier press, the front end of the guide hopper protrudes outside the pier press, and the rear end of the guide hopper is communicated inside the pier press and is positioned at the left end of the fixed die seat;

four the guide pulley left side of flare-outing is provided with the cover that flattens of fixed die seat right-hand member rear side, and flattens the inside transmission of cover and be connected with the mound material, the inside thread groove of having seted up of cover cylinder outer wall that flattens, the outside right side threaded connection of thread groove has the position adjustment swivel nut, the thread groove has seted up a plurality of flexible slide holes between the cover inside that flattens, a plurality of both ends all communicate with spacing slide hole about the flexible slide hole, and a plurality of spacing slide hole all sets up in the cover of flattening inside, a plurality of the inside equal sliding connection of flexible slide hole has a limit pressing block, a plurality of the limit pressing block is left and right both ends keep away from the cover central axis one side of flattening all fixedly connected with limit stop, and a plurality of limit stop respectively sliding connection is inside a plurality of limit slide holes, a plurality of limit pressing block is close to the cover central axis one end of flattening all be provided with return spring, and a plurality of return spring are located a plurality of limit slide holes respectively, a plurality of ball equal rolling connection are flattened outside the mound material, a plurality of limit pressing block is located a plurality of inside the inside and is kept away from the cover central axis one end of flattening, a plurality of limit pressing blocks all is located outside the limit sliding sleeve, a plurality of limit pressing blocks and is connected with a plurality of limit sliding blocks.

Preferably, the flattening sleeve and the thread groove are both cylindrical rings, the positioning screw sleeve consists of an external lantern ring and an internal thread ring, the lantern ring is slidably connected to the outside of the flattening sleeve, and the thread ring is in threaded connection with the thread groove.

Preferably, the telescopic slide holes and the limiting pressing blocks are rotationally symmetrical with the central axis of the flattening sleeve, and the limiting pressing blocks can be respectively and tightly attached to the limiting slide holes.

Preferably, the spacing briquetting is the triangle body setting, and the oblique angle face is located and keeps away from sleeve central axis one end that flattens, spacing slider is close to sleeve central axis one end that flattens and is the inclined plane setting, and closely laminates with the oblique angle face of spacing briquetting.

Preferably, the fixed ring fixedly connected with deoiling section of thick bamboo of both ends around the guide hopper is inside, and guide hopper lower extreme front side intercommunication has the delivery tube, a plurality of deoiling holes have been seted up to the inside of deoiling section of thick bamboo lower extreme, two spacing slide rails that set up around being set up have been seted up to guide hopper upper end front side inside, two spacing slide rail lower extreme left and right sides all is provided with the connection piece, and four connection pieces all sliding connection between guide hopper and deoiling section of thick bamboo, are located left two the connection piece with be located two connection piece upper ends on the right side and all fixedly connected with clearance pull head, and two limit stop all are located guide hopper upper end to all sliding connection is inside two spacing slide rails, is located left two connection piece and be located two connection piece lower extreme equal fixedly connected with cleaning rod brushes on the right side, and two cleaning rod brushes all sliding connection are between guide hopper and deoiling section of thick bamboo to all be located a plurality of deoiling hole upside.

Preferably, the spacing slide rail is the semicircle ring setting, the connection piece is quarter ring setting, and the connection piece can closely laminate with guide hopper and deoiling section of thick bamboo, the clearance pole brush is annular setting, and spacing slide rail, connection piece and clearance pole brush all with guide hopper with the central axis.

Preferably, the front end and the rear end of the cleaning rod brush can be tightly attached to the fixing ring between the guide hopper and the deoiling barrel, the cleaning rod brush can be tightly attached to the guide hopper and the deoiling barrel, and the cleaning rod brush can slide around the central axis of the guide hopper between the guide hopper and the deoiling barrel through pushing of the connecting sheet and the cleaning pull head.

Compared with the prior art, the utility model has the following beneficial effects:

1. through setting up the cover that flattens between cover half seat and four guide pulleys that flare-ups, let the mound material can flatten and straighten through a plurality of spacing briquetting of the cover that flattens inside and a plurality of ball that flattens of a plurality of spacing briquetting inside before getting into the cover half seat inside, make the mound material can flatten and straighten at the cover that flattens inside a plurality of directions to guarantee to get into the mound material of the inside of fixed die seat and be more straight, prevent that the mound material from producing the skew between movable mould and the cover half after being cut, guarantee production quality and qualification rate, and the position of spacing briquetting can be adjusted through the outside position regulating swivel nut of spiral shell cover that flattens, let the cover that flattens can flatten and straighten the mound material of different diameters, the suitability is stronger.

2. Through the oil removal section of thick bamboo that has a plurality of oil removal holes in the inside setting of guide hopper, let the product can carry out the deoiling through a plurality of oil removal holes when the ejection of compact, and can carry out inside clearance through setting up two clearance pole brushes between guide hopper and oil removal section of thick bamboo, can more convenient clear up the inside guide hopper, can prevent the inside jam of oil removal hole again, guarantee the deoiling efficiency of product.

Drawings

FIG. 1 is a schematic diagram of a cold header in a three-dimensional structure according to the present utility model;

FIG. 2 is a schematic perspective view of a flattening sleeve according to the present utility model;

FIG. 3 is an exploded view of the present utility model flattening sleeve;

FIG. 4 is a schematic view of a three-dimensional cross-section of a flattening sleeve according to the present utility model;

FIG. 5 is an enlarged schematic view of the utility model at A in FIG. 4;

fig. 6 is a schematic perspective sectional view of the guide hopper of the present utility model.

In the figure: 1. a upsetting press; 2. a rear racket seat; 3. a fixed die holder; 4. straightening the guide wheel; 5. a guide hopper; 6. flattening the sleeve; 7. a thread groove; 8. a positioning screw sleeve; 9. a telescopic slide hole; 10. limiting the sliding hole; 11. limiting pressing blocks; 12. a limit stop; 13. a return spring; 14. flattening the ball; 15. a limit sliding block; 16. a limiting slip ring; 17. an oil removal cylinder; 18. an oil removal hole; 19. a limit sliding rail; 20. a connecting sheet; 21. cleaning the pull head; 22. and cleaning the rod brush.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 6, the present utility model provides a rapid prototyping cold header, comprising:

the upsetting press 1 and the rear shooting seat 2 arranged inside the right side of the upper end of the upsetting press 1;

the rear clapping seat 2 is rotationally connected inside the pier press 1 through a supporting column and a power mechanism, the left side of the rear clapping seat 2 is provided with a fixed die seat 3, the fixed die seat 3 is fixedly connected inside the pier press 1, the rear side of the rear clapping seat 2 is provided with four straightening guide wheels 4, pier materials are in transmission connection between the four straightening guide wheels 4 and are rotationally connected to the front end of an adjusting mechanism positioned on the right side of the rear end of the pier press 1 through a rotating shaft, the front end of the pier press 1 is fixedly connected with a guide hopper 5, the front end of the guide hopper 5 protrudes outside the pier press 1, and the rear end of the guide hopper is communicated inside the pier press 1 and positioned at the left end of the fixed die seat 3;

the left side of the four straightening guide wheels 4 is provided with a flattening sleeve 6 fixedly connected to the rear side of the right end of the fixed die seat 3 and used for flattening and straightening the pier material, the inside of the flattening sleeve 6 is in transmission connection with the pier material, the inside of the cylindrical outer wall of the flattening sleeve 6 is provided with a thread groove 7, the right side outside of the thread groove 7 is in threaded connection with a positioning screw sleeve 8, a plurality of telescopic slide holes 9 are arranged between the thread groove 7 and the inside of the flattening sleeve 6, the left end and the right end of the telescopic slide holes 9 are communicated with limiting slide holes 10, the limiting slide holes 10 are respectively arranged in the flattening sleeve 6, limiting press blocks 11 are respectively and slidably connected in the telescopic slide holes 9 and used for extruding the pier material in all directions, the left end and the right end of the limiting press blocks 11 are respectively and fixedly connected with limiting stop blocks 12 on one side of the central axis of the flattening sleeve 6, the limiting stop blocks 12 are respectively and slidably connected in the limiting slide holes 10, the end of the plurality of limit stops 12 close to the central axis of the flattening sleeve 6 is provided with return springs 13, the plurality of return springs 13 are respectively positioned in the plurality of limit sliding holes 10 and used for pushing the limit pressing blocks 11 outwards, the inner parts of the end of the plurality of limit pressing blocks 11 close to the central axis of the flattening sleeve 6 are respectively connected with a plurality of flattening balls 14 in a rolling way, the plurality of flattening balls 14 are respectively connected outside the pier material in a rolling way, the inner parts of the right sides of the plurality of telescopic sliding holes 9 are respectively provided with limit sliding blocks 15, the plurality of limit sliding blocks 15 are respectively positioned on the right side of the end of the plurality of limit pressing blocks 11 far away from the central axis of the flattening sleeve 6, the end of the plurality of limit sliding blocks 15 far away from the central axis of the flattening sleeve 6 is fixedly connected with limit sliding rings 16, the limit sliding rings 16 are sleeved outside the thread grooves 7 and are in sliding connection with the thread grooves 7, the extrusion of the position adjusting screw sleeve 8 can be used for sliding, and the position of the limit pressing block 11 is adjusted.

Wherein, flattening cover 6 and thread groove 7 all are the cylindrical ring setting, and the position adjustment swivel nut 8 comprises outside lantern ring and inside thread ring, and lantern ring sliding connection is in flattening cover 6 outsidely, and thread ring and thread groove 7 threaded connection for the position of spacing slider 15 and spacing sliding ring 16 is adjusted.

Wherein, a plurality of flexible slide holes 9 and a plurality of spacing briquetting 11 are all with the central axis of flattening cover 6 be rotational symmetry setting, and a plurality of spacing briquetting 11 can closely laminate with a plurality of spacing slide holes 10 respectively, can carry out flattening and the flare-out of all directions to the mound material.

Wherein, spacing briquetting 11 is the triangle body setting, and the oblique angle face is located to keep away from the cover 6 central axis one end that flattens, and spacing slider 15 is close to the cover 6 central axis one end that flattens and is the inclined plane setting, and closely laminates with the oblique angle face of spacing briquetting 11, lets spacing briquetting 11 carry out position adjustment through the extrusion with spacing slider 15, makes spacing briquetting 11 can flatten and straighten the mound material of different diameters.

Wherein, guide hopper 5 is inside to be through the solid fixed ring fixedly connected with deoiling section of thick bamboo 17 of front and back both ends, and guide hopper 5 lower extreme front side intercommunication has the delivery tube, a plurality of oil removal holes 18 have been seted up to guide hopper 5 lower extreme front side inside, two spacing slide rails 19 that are the front and back setting have been seted up, two spacing slide rail 19 lower extreme left and right sides all are provided with connection piece 20, and four connection pieces 20 all sliding connection are between guide hopper 5 and deoiling section of thick bamboo 17, two connection pieces 20 that are located the left side and two connection piece 20 upper ends that are located the right side all fixedly connected with clearance pull head 21, and two limit stop 12 all are located guide hopper 5 upper end, and all sliding connection is inside two spacing slide rail 19, two connection pieces 20 that are located the left side and two connection piece 20 lower extreme that are located the right side are all fixedly connected with cleaning rod brush 22, and two cleaning rod brushes 22 all sliding connection are between guide hopper 5 and deoiling section of thick bamboo 17, and all be located a plurality of oil removal holes 18 upside, can clear up the product through deoiling section of thick bamboo 17 and deoiling hole 18, the deoiling rod can be cleared up through the cleaning rod 22.

Wherein, spacing slide rail 19 is the semicircle ring setting, and connection piece 20 is quarter ring setting, and connection piece 20 can closely laminate with guide hopper 5 and deoiling section of thick bamboo 17, and cleaning rod brush 22 is the annular setting, and spacing slide rail 19, connection piece 20 and cleaning rod brush 22 all with guide hopper 5 with the central axis, let cleaning pull head 21 can slide and clear up between guide hopper 5 and thread groove 7 through connection piece 20 pulling cleaning rod brush 22.

Wherein, both ends can closely laminate with the solid fixed ring between guide hopper 5 and the deoiling section of thick bamboo 17 around the clearance pole brush 22, and clearance pole brush 22 can closely laminate with guide hopper 5 and deoiling section of thick bamboo 17 to can carry out the slip around the guide hopper 5 central axis between guide hopper 5 and deoiling section of thick bamboo 17 through the pushing of connection piece 20 and clearance pull head 21, can carry out the clearance brush between guide hopper 5 and deoiling section of thick bamboo 17 that is located the lower extreme of a plurality of deoiling holes 18, prevent that a plurality of deoiling holes 18 from blocking.

The working principle is as follows:

after the pier material is inserted between four straightening guide wheels 4, the pier material passes through the interior of a flattening sleeve 6 to be secondarily flattened and straightened, finally passes into a fixed die holder 3, equipment is started, the pier press 1 cuts, transports and presses the pier material through a cutter, a clamp and a movable die which are arranged in the pier press, so that the cut pier material is pressed into a product, the pressed product is thrown out from the front side of the left end of a fixed die holder 3, and the pressed product is deoiled and exported through a guide hopper 5;

in the process of passing the pier material through the interior of the flattening sleeve 6, firstly screwing the positioning screw sleeve 8 to the rightmost side, enabling the limiting press block 11 to slide towards one end far away from the central axis of the flattening sleeve 6 under the action of the limiting stop block 12 and the return spring 13, extruding and sliding the limiting slide block 15 and the limiting slide ring 16 to the right side through the inclined angle surface of the limiting press block 11, penetrating the pier material into the interior of the flattening sleeve 6, screwing the positioning screw sleeve 8 to the left side, pushing the limiting slide ring 16 to the left side by the positioning screw sleeve 8, enabling the limiting slide blocks 15 at the inner end of the limiting slide ring 16 to extrude the limiting press blocks 11 towards one end close to the central axis of the flattening sleeve 6, enabling the limiting press blocks 11 to be closely attached to the pier material through the plurality of flattening balls 14 inside the central axis of the limiting press block 6, enabling the flattening balls 14 to flatten the pier material in all directions when the pier material is fed to the left inside the flattening sleeve 6, and rolling on the pier material, and enabling the pier material to be extruded in all directions, so that the pier material is easier to be flattened and straightened;

in addition, in the process of leading out the pier-pressed product from the inside of the guide hopper 5, a small amount of scraps can be generated by pier pressing, and the scraps mixed cooling liquid can be adhered to the outside of the product, and the cooling liquid mixture outside the product can leak into the bottom of the guide hopper 5 through a plurality of oil removal holes 18 at the lower end of the oil removal cylinder 17 inside the guide hopper 5, and the cooling liquid mixture is led out through a delivery pipe at the bottom, so that the cooling liquid mixture is adhered to the inner wall between the guide hopper 5 and the oil removal cylinder 17 and the inside of the plurality of oil removal holes 18 after long-term use, and oil removal is easy to be unsmooth, at this time, the inner wall between the guide hopper 5 and the oil removal cylinder 17 can be cleaned through the cleaning rod brush 22, the cleaning rod brush 21 is pulled downwards, the cleaning rod brush 22 is driven by the connecting piece 20, and the cleaning rod brush 22 slides around the central axis of the guide hopper 5 between the guide hopper 5 and the oil removal cylinder 17, and the oil removal cylinder 17 is tightly attached to the guide hopper 5 and is positioned on the upper side of the plurality of oil removal holes 18, so that the cooling liquid mixture on the inner wall between the guide hopper 5 and the oil removal cylinder 17 can be scraped off, and the inside of the guide hopper 5 and the oil removal cylinder 17 can be cleaned, and the oil removal cylinder 17 can be cleaned.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A rapid prototyping cold header comprising:

the upsetting press (1) and the rear clapping seat (2) are arranged in the right side of the upper end of the upsetting press (1);

the rear clapping seat (2) is rotationally connected inside the pier press (1) through a supporting column and a power mechanism, a fixed die seat (3) is arranged on the left side of the rear clapping seat (2), the fixed die seat (3) is fixedly connected inside the pier press (1), four straightening guide wheels (4) are arranged on the rear side of the rear clapping seat (2), pier materials are connected between the four straightening guide wheels (4) in a transmission mode, the rear clapping seat is rotationally connected to the front end of an adjusting mechanism located on the right side of the rear end of the pier press (1) through a rotating shaft, a guide hopper (5) is fixedly connected to the front end of the pier press (1), the front end of the guide hopper (5) protrudes out of the pier press (1), and the rear end of the guide hopper is communicated inside the pier press (1) and is located at the left end of the fixed die seat (3);

the method is characterized in that:

the four straightening guide wheels (4) are provided with flattening sleeves (6) fixedly connected to the rear side of the right end of the fixed die seat (3), the interiorly driven of the flattening sleeves (6) is connected with a pier material, threaded grooves (7) are formed in the interiorly of the cylindrical outer wall of the flattening sleeves (6), the right side of the outside of the threaded grooves (7) is connected with positioning threaded sleeves (8) in a threaded manner, a plurality of telescopic sliding holes (9) are formed between the threaded grooves (7) and the interiorly of the flattening sleeves (6), a plurality of limiting sliding holes (10) are formed in the left end and the right end of each telescopic sliding hole (9) in a communicating manner, a plurality of limiting sliding holes (10) are formed in the interiorly of the flattening sleeves (6), a plurality of limiting pressing blocks (11) are connected in a sliding manner in the interiorly of the telescopic sliding holes (9), a plurality of limiting pressing blocks (11) are far away from the interiorly of the left end and the right end of the flattening sleeves (6) in a fixedly connected with limiting stop (12), a plurality of limiting springs (12) are connected in a sliding manner in one end of the limiting sliding manner respectively, a plurality of limiting pressing blocks (10) are arranged in the interiorly of the limiting pressing blocks (12) close to the interiorly of the flattening sleeves (6) in a plurality of limiting pressing blocks (13) in a sliding manner, a plurality of limiting ball bearings (13) are connected in a sliding manner, a plurality of limiting pressing blocks (13) are arranged in the sliding mode, and are close to the inside the limiting pressing blocks (13), and a plurality of ball (14) that flatten all roll connection is outside the mound material, and a plurality of flexible slide hole (9) right side is inside all to be provided with spacing slider (15), and a plurality of spacing slider (15) are located a plurality of spacing briquetting (11) respectively and keep away from the cover (6) central axis one end right side that flattens, a plurality of spacing slider (15) are kept away from cover (6) central axis one end fixedly connected with spacing sliding ring (16) that flattens, and spacing sliding ring (16) cup joint outside screw groove (7) to with screw groove (7) sliding connection.

2. The rapid prototyping cold header of claim 1 wherein: the flattening sleeve (6) and the thread groove (7) are all cylindrical rings, the positioning screw sleeve (8) is composed of an external lantern ring and an internal thread ring, the lantern ring is slidably connected to the outside of the flattening sleeve (6), and the thread ring is in threaded connection with the thread groove (7).

3. The rapid prototyping cold header of claim 1 wherein: the telescopic sliding holes (9) and the limiting pressing blocks (11) are rotationally symmetrical with the central axis of the flattening sleeve (6), and the limiting pressing blocks (11) can be respectively tightly attached to the limiting sliding holes (10).

4. The rapid prototyping cold header of claim 1 wherein: the limiting pressing block (11) is arranged in a triangular body, the bevel face is located at one end far away from the central axis of the flattening sleeve (6), and one end, close to the central axis of the flattening sleeve (6), of the limiting sliding block (15) is arranged in an inclined face and is tightly attached to the bevel face of the limiting pressing block (11).

5. The rapid prototyping cold header of claim 1 wherein: guide hopper (5) inside is through fixed ring fixedly connected with deoiling section of thick bamboo (17) around both ends, and guide hopper (5) lower extreme front side intercommunication has the delivery tube, a plurality of deoiling holes (18) have been seted up to guide hopper (5) lower extreme inside, guide hopper (5) upper end front side inside has been seted up two spacing slide rails (19) that are the front and back setting, two spacing slide rail (19) lower extreme left and right sides all is provided with connection piece (20), and four equal sliding connection of connection piece (20) are between guide hopper (5) and deoiling section of thick bamboo (17), are located two on the left connection piece (20) and two connection piece (20) upper ends that are located the right side are equal fixedly connected with clearance pull head (21), and two limit stop (12) all are located guide hopper (5) upper end to equal sliding connection is inside two spacing slide rail (19), are located two connection piece (20) on the left and two connection piece (20) lower extreme that are located the right side are equal fixedly connected with brush (22), and two brush (22) are located between two equal sliding connection piece (17) and the deoiling section of thick bamboo.

6. The rapid prototyping cold header of claim 5 wherein: spacing slide rail (19) are semicircle ring setting, connection piece (20) are quarter ring setting, and connection piece (20) can closely laminate with guide hopper (5) and deoiling section of thick bamboo (17), clearance pole brush (22) are annular setting, and spacing slide rail (19), connection piece (20) and clearance pole brush (22) all with guide hopper (5) with the central axis.

7. The rapid prototyping cold header of claim 5 wherein: the front end and the rear end of the cleaning rod brush (22) can be tightly attached to a fixing ring between the guide hopper (5) and the deoiling barrel (17), the cleaning rod brush (22) can be tightly attached to the guide hopper (5) and the deoiling barrel (17), and the cleaning rod brush can slide between the guide hopper (5) and the deoiling barrel (17) around the central axis of the guide hopper (5) through pushing of the connecting sheet (20) and the cleaning pull head (21).