CN111702113A

CN111702113A - Forging piece preheating device

Info

Publication number: CN111702113A
Application number: CN202010591774.1A
Authority: CN
Inventors: 王珠玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-25
Filing date: 2020-06-25
Publication date: 2020-09-25

Abstract

The invention discloses a forging piece preheating device, which structurally comprises a screw, a preheating device, a preheating straight cylinder, a limiting grid, a wind direction self-changing device, a fixed fan cover, a motor and a support, and has the following effects: the preheating device linearly moves along the preheating straight cylinder along the rotary motion of the screw, the preheating device linearly moves downwards along the preheating straight cylinder in the forward rotation of the screw, the preheating device linearly moves upwards along the preheating straight cylinder in the reverse rotation, the wind direction self-changing device rotates along the lead of the screw in rotation, the wind direction self-changing device sucks air from the bottom of the fixed fan cover and discharges the air from the top of the preheating straight cylinder when the preheating device moves upwards, the wind direction self-changing device sucks air from the top of the preheating straight cylinder and discharges the air from the bottom of the fixed fan cover when the preheating device moves downwards, the forward rotation and the reverse rotation of the screw in a back and forth mode can change the inflow and outflow directions of air flow, the generated preheating heat can pass in and out of the preheating straight cylinder along with the air flow, and the preheating uniformity and the efficiency of.

Description

Forging piece preheating device

Technical Field

The invention relates to the field of forging and pressing machinery, in particular to a forging piece preheating device.

Background

Forging and pressing in the metallurgical industry belong to plastic working or pressure working, but the forging is mainly used for producing metal products, the rolling and the pressing are mainly used for producing universal metal materials such as plates, strips, pipes, sections, wires and the like, the forging is a combination of forging and stamping, the forging is mainly classified according to a forming mode and a deformation temperature, the forging can be divided into two categories of forging and stamping according to the forming mode, the forging can be divided into hot forging, cold forging, warm forging, isothermal forging and the like according to the deformation temperature, the hot forging is the forging carried out above the recrystallization temperature of metal, the improvement of the temperature can improve the plasticity of the metal, the internal quality of a workpiece is improved, the workpiece is not easy to crack, the existing forging and pressing part preheating device can not reasonably control the uniformity of heat when preheating forging and pressing parts, and the phenomenon of overheating caused by the oversize growth of metal grains when the initial forging temperature is overhigh, the quality of the forged piece can be reduced, the melting of intercrystalline low-melting-point substances and the intercrystalline oxidation can occur when the temperature is close to the melting point of metal, overburning is formed, and the overburnt blank is often cracked during forging, so that a forged piece preheating device needs to be developed, and the problems that the existing forged piece preheating device cannot reasonably control the uniformity of heat when preheating forged parts, the metal crystal grains grow too large to form an overheating phenomenon due to overhigh initial forging temperature, the melting of intercrystalline low-melting-point substances and the intercrystalline oxidation can occur when the temperature is close to the melting point of metal, overburning is formed, and the overburnt blank is often cracked during forging are solved.

Summary of the invention

Aiming at the defects of the prior art, the invention is realized by the following technical scheme: a forging piece preheating device structurally comprises a screw, a preheating device, a preheating straight barrel, a limiting grid, a wind direction self-changing device, a fixed fan cover, a motor and a support, wherein the fixed fan cover is arranged at the top of the support and welded with the support, the preheating straight barrel is arranged at the top of the fixed fan cover and vertically buckled at the top of the fixed fan cover, the screw is arranged at the center inside the preheating straight barrel and vertically arranged inside the preheating straight barrel, the bottom of the screw is fixed inside the fixed fan cover, the motor is arranged at the bottom of the fixed fan cover and connected with the screw, the wind direction self-changing device is arranged inside the fixed fan cover and fixedly connected with the screw, the preheating device is arranged above the wind direction self-changing device and is matched with the screw through threads, the preheating device is matched with the wind direction self-changing device, the bottom of the preheating straight cylinder is provided with a limiting grid, the limiting grid and the preheating straight cylinder are welded, and the central position of the limiting grid is connected with the screw through a bearing.

As a further optimization of the technical scheme, the preheating device comprises a preheating seat, a limiting outer circular frame, shaft brackets, rollers, straight rails and a rotating shaft, the limiting outer circular frame is arranged at the top of the preheating seat and vertically buckled at the top of the preheating seat, two shaft brackets are arranged on two sides of the preheating seat in an axisymmetric structure and buckled with the preheating seat, the rotating shaft is arranged at the center of the shaft brackets and is installed on the shaft brackets through bearings, the rollers are arranged at the front ends of the rotating shafts and fixedly connected with the rotating shafts, the straight rails are arranged at the rear ends of the rollers, and the straight rails are matched with the rollers.

As a further optimization of the technical proposal, the preheating seat comprises a heating mechanism, a first heat dissipation nozzle, a heat dissipation cover, a second heat dissipation nozzle, a round seat, a lower air port, an upper magnetic plate and a nut, the bottom of the round seat is provided with a nut which is vertically buckled on the round groove of the round seat, the bottom of the nut is provided with an upper magnetic plate, the upper magnetic plate is in a circular arc plate-shaped structure and is fastened and fixed on the nut, two lower air ports are arranged at the bottom of the round seat in parallel and equidistantly, the lower air inlet and the round seat are of an integrated structure, a heating mechanism is arranged in the round seat and matched with the round seat, the top of the round seat is evenly provided with four heat dissipation covers at equal intervals, the heat dissipation covers are buckled with the round seat, the top of the heat dissipation cover is vertically provided with a first heat dissipation nozzle and a second heat dissipation nozzle, and the first heat dissipation nozzle and the second heat dissipation nozzle are connected with the heat dissipation cover.

As a further optimization of the technical scheme, the heating mechanism comprises a ventilation elbow, a fairing, a rotary disc, a heat conduction rod, a heat dissipation block, a heat conduction block, an electric heating ring and a fixed frame, wherein the outer ring of the fixed frame is provided with the electric heating ring, two sides of the electric heating ring are provided with the two heat conduction blocks in an axial symmetry structure, the electric heating ring is fixed on the fixed frame through the heat conduction blocks, two rotary discs are arranged on two sides of the fixed frame in an axial symmetry structure, the front end of each rotary disc is provided with two heat conduction rods in parallel and at equal intervals, one end of each heat conduction rod is fixedly connected with the rotary disc, the other end of each heat conduction rod is in sliding fit with a circular groove formed by the heat conduction blocks, the heat dissipation blocks are arranged on the heat conduction rods in parallel and at equal intervals, the four fairings are uniformly arranged below the electric heating ring at equal intervals, one end of each fairing is fixed on the outer ring of the, the even equidistance of fixed frame below be equipped with four ventilation return bends, ventilation return bend and radome fairing connect, the even equidistance of radome fairing be equipped with four and each other through enclose into the circular shape each ventilation return bend connection, the heat-conducting rod be that the axisymmetric structure be equipped with four and per two be a set of inside arranging the radome fairing in.

As a further optimization of the technical scheme, the wind direction self-changing device comprises a circular frame, a movable magnetic stripe, blades, a connecting shaft, a fixed magnetic stripe and a turning balance mechanism, wherein four blades are uniformly arranged on an outer ring of the turning balance mechanism at equal intervals, the rear ends of the blades are provided with the connecting shaft, the connecting shaft and the blades are welded, the blades are connected with the turning balance mechanism through the connecting shaft, the circular frame is arranged at the rear end of the connecting shaft and is fastened and fixed on the outer wall of the turning balance mechanism, the movable magnetic stripe is arranged inside the circular frame and is of an arc-shaped structure and is in sliding fit with the circular frame, the inner arc of the movable magnetic stripe is connected with the connecting shaft, the bottom of the circular frame is provided with the fixed magnetic stripe, and the fixed magnetic stripe is fixed at the bottom of the circular frame and is matched with the movable magnetic.

As a further optimization of the technical scheme, the turning balance mechanism comprises a fixed ring, a ring pipe, a shaft sleeve, a balancing weight and a movable seat, wherein the shaft sleeve is arranged at the center inside the fixed ring, the shaft sleeve is fixedly connected with the fixed ring, four ring pipes are uniformly arranged on the outer ring of the shaft sleeve at equal intervals, the ring pipe is fixedly connected with the shaft sleeve, the movable seat is arranged inside the ring pipe, the movable seat and the ring pipe are in sliding fit, the balancing weight is arranged inside the ring pipe, the balancing weight and the ring pipe are in sliding fit, and the balancing weight is connected with the movable seat.

As a further optimization of the technical solution, a vertical length formed by the first heat dissipation nozzle is smaller than a vertical length of the second heat dissipation nozzle.

As the further optimization of this technical scheme, fixed magnetic stripe and activity magnetic stripe keep heteropolar attracting throughout, activity magnetic stripe and last magnetic sheet keep heteropolar attracting throughout, the magnetic attraction that produces of activity magnetic stripe and last magnetic sheet be greater than the magnetic attraction that fixed magnetic stripe and activity magnetic stripe produced.

Advantageous effects

The forging piece preheating device is reasonable in design and strong in functionality, and has the following beneficial effects:

the invention is characterized in that a preheating device and a wind direction self-changing device are arranged on the same screw, the preheating device moves linearly along a preheating straight cylinder along with the rotation motion of the screw, the preheating device moves linearly downwards along the preheating straight cylinder in the clockwise rotation of the screw, the preheating device moves linearly upwards along the preheating straight cylinder in the anticlockwise rotation, the wind direction self-changing device rotates along with the rotating lead of the screw, the wind direction self-changing device sucks air from the bottom of a fixed fan cover and discharges the air from the top of the preheating straight cylinder when the preheating device moves upwards, the wind direction self-changing device sucks air from the top of the preheating straight cylinder and discharges the air from the bottom of the fixed fan cover when the preheating device moves downwards, the screw rotates forwards and backwards under the driving of a motor, thereby changing the flowing-in and flowing-out directions of the air flow, leading the generated preheating heat to come in and go out of the preheating straight cylinder along with the air flow, and improving the preheating uniformity and efficiency of the preheating piece;

when the forging preheating device is used, the forging preheating piece is placed in the limiting outer circular frame, the forging preheating piece is placed above the preheating seat, two rollers are arranged on two sides of the preheating seat and are matched with a straight rail vertically arranged in the preheating straight cylinder, the preheating seat is matched with a screw rod vertically arranged in the preheating straight cylinder through a nut, the preheating seat moves upwards when the screw rod rotates forwards based on the ball screw principle, the preheating seat moves downwards when the screw rod rotates backwards, the upper magnetic plate is arranged at the bottom of the preheating seat, the magnetic attraction force generated by the movable magnetic strip and the upper magnetic plate is larger than the magnetic attraction force generated by the fixed magnetic strip and the movable magnetic strip, when the preheating seat moves downwards, the upper magnetic plate and the movable magnetic strip are close to each other, the magnetic attraction force generated by the upper magnetic plate and the movable magnetic strip enables the blades to turn over, when the preheating seat moves upwards, the distance between the upper magnetic plate and the movable magnetic strip is lengthened, the blades are turned and reset, the uniformly arranged blades rotate along with the torque generated by the screw rod, and the blades can be turned and reset according to the moving position of the preheating seat in the rotation process, so that the flowing-in and flowing-out directions of air flow are changed, the generated preheating heat can go in and out of the preheating straight cylinder along with the air flow to efficiently dry and preheat a preheating piece, because the movable seat is arranged in the ring pipe and is connected with the blades through a connecting shaft, the movable seat is connected with the ring pipe through a balancing weight, the semi-circular arc structure of the balancing weight is in sliding fit with the ring pipe, and the movable seat and the balancing weight form a movable structure, can move circumferentially along with the turning motion of the blades, can improve the stability of the blades in the rotation process, and increase the working efficiency;

the invention relates to a heat radiating cover, wherein a fairing is correspondingly connected with a heat radiating cover, and the vertical length formed by a first heat radiating nozzle is smaller than that of a second heat radiating nozzle, so that preheating parts with different shapes can be efficiently preheated in the drying and preheating process, the heat radiating nozzles are prevented from being blocked, and airflow is prevented from not flowing, because four heat conducting rods are arranged in the fairing in an axial symmetry structure, every two heat conducting rods are arranged in a group, and the heat conducting rods are connected with an electric heating ring through heat conducting blocks and are connected with a rotating shaft through rotating discs, the rollers of a preheating seat drive the heat conducting rods to rotate in the vertical moving process, so that the heat radiating blocks move in the circumferential direction, and the heat is efficiently and uniformly distributed on the preheating parts under the flowing action of the inlet and outlet of airflow.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic sectional front view of a preform preheating device according to the present invention;

FIG. 2 is a schematic top view of the preheating device according to the present invention;

FIG. 3 is a schematic side sectional view of a preheating seat according to the present invention;

FIG. 4 is a schematic top sectional view of the heating mechanism of the present invention;

FIG. 5 is a schematic top view of the wind direction changing device of the present invention;

FIG. 6 is a schematic side sectional view of the direction-changing balancing mechanism of the present invention.

In the figure: screw-1, preheating device-2, preheating seat-21, heating mechanism-21 a, ventilation elbow-21 a1, fairing-21 a2, rotary disc-21 a3, heat conduction rod-21 a4, heat dissipation block-21 a5, heat conduction block-21 a6, electric heating ring-21 a7, fixed frame-21 a8, first heat dissipation nozzle-21 b, heat dissipation hood-21 c, second heat dissipation nozzle-21 d, round seat-21 e, lower air inlet-21 f, upper magnetic plate-21 g, nut-21 h, limit outer round frame-22, shaft bracket-23, roller-24, straight rail-25, rotating shaft-26, preheating straight cylinder-3, limit grid-4, wind direction self-changing device-5, round frame-51, movable magnetic strip-52, blade-53, wind direction self-changing device-5, round frame-51, movable magnetic strip-52, and air flow, The wind power generation device comprises a connecting shaft-54, a fixed magnetic strip-55, a direction-changing balance mechanism-56, a fixed ring-56 a, an annular pipe-56 b, a shaft sleeve-56 c, a balancing weight-56 d, a movable seat-56 e, a fixed wind cover-6, a motor-7 and a support-8.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.

Example 1

Referring to fig. 1-4, the present invention provides an embodiment of a forged part preheating device:

referring to fig. 1, a forged part preheating device structurally comprises a screw 1, a preheating device 2, a preheating straight barrel 3, a limiting grid 4, a wind direction self-changing device 5, a fixed fan housing 6, a motor 7 and a support 8, wherein the top of the support 8 is provided with the fixed fan housing 6, the fixed fan housing 6 is welded with the support 8, the fixed fan housing 6 is of a hollow circular structure, the upper end and the lower end of the fixed fan housing 6 are provided with wind ports, the top of the fixed fan housing 6 is provided with the preheating straight barrel 3, the preheating straight barrel 3 is vertically buckled at the top of the fixed fan housing 6, the screw 1 is arranged at the center position inside the preheating straight barrel 3, the screw 1 is vertically arranged inside the preheating straight barrel 3, the bottom of the fixed fan housing 6 is fixed inside the fixed fan housing 6, the motor 7 is arranged at the bottom of the fixed fan housing 6 and connected with the screw 1, the wind direction self-changing device 5 is arranged inside the fixed, the wind direction from changing device 5 and screw rod 1 fixed connection, the wind direction from changing 5 tops and being equipped with preheating device 2, preheating device 2 and screw rod 1 adopt screw-thread fit, preheating device 2 and wind direction cooperate from changing device 5, 3 bottoms of preheating straight section of thick bamboo be equipped with spacing grid 4, spacing grid 4 with preheat straight section of thick bamboo 3 and weld mutually and central point puts and is connected through the bearing with screw rod 1.

Referring to fig. 2, the preheating device 2 includes a preheating base 21, a position-limiting outer circular frame 22, a shaft bracket 23, a roller 24, a straight rail 25, and a rotating shaft 26, the position-limiting outer circular frame 22 is disposed on the top of the preheating base 21, the position-limiting outer circular frame 22 is vertically fastened on the top of the preheating base 21, two shaft brackets 23 are disposed on two sides of the preheating base 21 in an axisymmetric structure, the shaft bracket 23 is fastened with the preheating base 21, the rotating shaft 26 is disposed at the center of the shaft bracket 23, the rotating shaft 26 is mounted on the shaft bracket 23 through a bearing, the roller 24 is disposed at the front end of the rotating shaft 26, the roller 24 is fixedly connected with the rotating shaft 26, the straight rail 25 is disposed at the rear end of the roller 24, the straight rail 25 is matched with the roller 24, and the straight rail 25 is vertically disposed inside the preheating straight cylinder 3 and is welded to the two.

Referring to fig. 3, the preheating seat 21 includes a heating mechanism 21a, a first heat dissipation nozzle 21b, a heat dissipation cover 21c, a second heat dissipation nozzle 21d, a circular seat 21e, a lower air inlet 21f, an upper magnetic plate 21g, and a nut 21h, the bottom of the circular seat 21e is provided with the nut 21h, the nut 21h is vertically fastened on a circular groove of the circular seat 21e, the bottom of the nut 21h is provided with the upper magnetic plate 21g, the upper magnetic plate 21g is in a circular arc plate structure and fastened and fixed on the nut 21h, the bottom of the circular seat 21e is provided with two lower air inlets 21f in parallel and equidistantly, the lower air inlet 21f and the circular seat 21e are in an integrated structure, the circular seat 21e is internally provided with the heating mechanism 21a, the heating mechanism 21a is matched with the circular seat 21e, the top of the circular seat 21e is provided with four heat dissipation covers 21c uniformly and equidistantly, and the heat dissipation covers 21c are fastened with the circular seat 21e, the top of the heat dissipation cover 21c is vertically provided with a first heat dissipation nozzle 21b and a second heat dissipation nozzle 21d, the first heat dissipation nozzle 21b and the second heat dissipation nozzle 21d are connected with the heat dissipation cover 21c, the vertical length formed by the first heat dissipation nozzle 21b is smaller than that of the second heat dissipation nozzle 21d, and the round seat 21e is matched with the screw rod 1 through a nut 21 h.

Referring to fig. 4, the heating mechanism 21a includes a ventilation elbow 21a1, a cowling 21a2, a rotating disc 21a3, a heat conduction rod 21a4, a heat dissipation block 21a5, a heat conduction block 21a6, an electric heating ring 21a7, and a fixing frame 21a8, the fixing frame 21a8 is disposed at the center inside the circular seat 21e and connected to the fixing frame 21e, an electric heating ring 21a7 is disposed on the outer ring of the fixing frame 21a8, two heat conduction blocks 21a6 are disposed on two sides of the electric heating ring 21a7 in an axisymmetric structure, the electric heating ring 21a7 is fixed on the heat conduction fixing frame 21a8 through the guide block 21a6, two rotating discs 21a3 are disposed on two sides of the fixing frame 21a8 in an axisymmetric structure, two heat conduction rods 21a4 are disposed in parallel at the front end of the rotating disc 21a3, one end of the heat conduction rods 21a4 is fixedly connected to the rotating disc 21a3, and the other end is slidably fitted to the circular guide block 6, the heat conduction rod 21a4 is provided with heat dissipation blocks 21a5 in parallel and equidistantly, the heat dissipation blocks 21a5 are welded with the heat conduction rod 21a4, four fairings 21a2 are uniformly arranged under the electric heating ring 21a7 at equal intervals, one end of each fairing 21a2 is fixed on the outer ring of the fixed frame 21a8, the top of each fairing is connected with the electric heating ring 21a7, four ventilation bent pipes 21a1 are uniformly arranged under the fixed frame 21a8 at equal intervals, the ventilation bent pipes 21a1 are connected with the fairing 21a2, the fairings 21a2 are uniformly and equidistantly provided with four and are mutually connected through each ventilation bent pipe 21a1 which forms a circle, the heat conduction rods 21a4 are arranged in four axially symmetrical structures, and each two heat conduction rods are arranged in the fairing 21a2 as a group, the fairing 21a2 is correspondingly connected with a heat radiation cover 21c, and each two heat conduction rods 21a4 arranged in parallel are connected with the rotating shaft 26 on the corresponding side through a rotating disc 21a 3.

Example 2

Referring to fig. 1-6, the present invention provides an embodiment of a forged part preheating device:

Referring to fig. 5, the wind direction self-changing device 5 comprises a circular frame 51, a movable magnetic stripe 52, blades 53, a connecting shaft 54, a fixed magnetic stripe 55 and a direction-changing balance mechanism 56, wherein four blades 53 are uniformly and equidistantly arranged on an outer ring of the direction-changing balance mechanism 56, the rear end of each blade 53 is provided with the connecting shaft 54, the connecting shaft 54 is welded with the blade 53, the blade 53 is connected with the direction-changing balance mechanism 56 through the connecting shaft 54, the circular frame 51 is arranged at the rear end of the connecting shaft 54, the circular frame 51 is fastened and fixed on the outer wall of the direction-changing balance mechanism 56, the movable magnetic stripe 52 is arranged inside the circular frame 51, the movable magnetic stripe 52 is of an arc structure and is in sliding fit with the circular frame 51, the arc of the movable inner circular magnetic stripe 52 is connected with the connecting shaft 54, the bottom of the circular frame 51 is provided with the fixed magnetic stripe 55, the fixed magnetic stripe 55 is fixed at the bottom, fixed magnetic stripe 55 and activity magnetic stripe 52 keep heteropolar attracting all the time, activity magnetic stripe 52 and last magnetic sheet 21g keep heteropolar attracting all the time, the magnetic attraction that activity magnetic stripe 52 and last magnetic sheet 21g produced be greater than the magnetic attraction that fixed magnetic stripe 55 and activity magnetic stripe 52 produced.

Referring to fig. 6, the direction-changing balancing mechanism 56 includes a fixed ring 56a, a ring pipe 56b, a shaft sleeve 56c, a balancing weight 56d, and a movable seat 56e, the shaft sleeve 56c is disposed at the center of the inside of the fixed ring 56a, the shaft sleeve 56c is fixedly connected with the fixed ring 56a, the fixed ring 56a is fixed on the screw rod 1 through the shaft sleeve 56c, four circular frames 51 are uniformly and equidistantly disposed and fixed on the outer ring of the fixed ring 56a, four ring pipes 56b are uniformly and equidistantly disposed on the outer ring of the shaft sleeve 56c, the ring pipe 56b is fixedly connected with the shaft sleeve 56c, the movable seat 56e is disposed inside the ring pipe 56b, the movable seat 56e and the ring pipe 56b are in sliding fit, the movable seat 56e is connected with the blades 53 through the connecting shaft 54, the balancing weight 56d is disposed inside the ring pipe 56b, the balancing weight 56d and the ring pipe 56b are in sliding fit, and the balancing weight 56d is in a semicircular structure and is connected with the movable seat 56 e.

The specific realization principle is as follows:

the preheating device 2 and the wind direction self-changing device 5 are arranged on the same screw rod 1, the preheating device 2 linearly moves along the preheating straight cylinder 3 along with the rotation motion of the screw rod 1, the preheating device 2 linearly moves downwards along the preheating straight cylinder 3 in the clockwise rotation of the screw rod 1, the preheating device 2 linearly moves upwards along the preheating straight cylinder 3 in the anticlockwise rotation, the wind direction self-changing device 5 rotates along with the rotating lead of the screw rod 1, the wind direction self-changing device 5 sucks air from the bottom of the fixed fan cover 6 and discharges the air from the top of the preheating straight cylinder 3 when the preheating device 2 moves upwards, the wind direction self-changing device 5 sucks air from the top of the preheating straight cylinder 3 and discharges the air from the bottom of the fixed fan cover 6 when the preheating device 2 moves downwards, the screw rod 1 rotates forwards and backwards under the driving of the motor 7, so as to change the inflow and outflow directions of air flow, the generated preheating heat flows in and out of the preheating straight cylinder 3 along with the, the preheating uniformity and efficiency of the preheating piece are improved, when the preheating seat 21 is used, the forging preheating piece is placed in the limiting outer circular frame 22, the forging preheating piece is placed above the preheating seat 21, two rollers 24 are arranged on two sides of the preheating seat 21, the rollers 24 are matched with a straight rail 25 vertically arranged in the preheating straight cylinder 3, the preheating seat 21 is matched with a screw rod 1 vertically arranged in the preheating straight cylinder 3 through a nut 21h, based on the ball screw principle, the preheating seat 21 moves upwards when the screw rod 1 rotates forwards, the preheating seat 21 moves downwards when the screw rod 1 rotates backwards, an upper magnetic plate 21g is arranged at the bottom of the preheating seat 21, the magnetic attraction force generated by the movable magnetic strip 52 and the upper magnetic strip 21g is larger than that generated by the fixed magnetic strip 55 and the movable magnetic strip 52, when the preheating seat 21 moves downwards, the upper magnetic plate 21g is close to the movable magnetic strip 52, and the magnetic attraction force generated by the two makes the blades 53 overturn, when the preheating seat 21 moves upwards, the distance between the upper magnetic plate 21g and the movable magnetic strip 52 is lengthened, the magnetic attraction force generated by the fixed magnetic strip 55 and the movable magnetic strip 52 causes the blades 53 to turn over and reset, and each uniformly arranged blade 53 rotates along with the torque generated by the screw rod 1, and the blades 53 can turn over and reset according to the moving position of the preheating seat 21 during rotation, thereby changing the flowing-in and flowing-out direction of the air flow, causing the generated preheating heat to go in and out the preheating straight cylinder 3 along with the air flow for high-efficiency drying and preheating of the preheating piece, because the movable seat 56e is arranged inside the circular pipe 56b and connected with the blades 53 through the connecting shaft 54, and the movable seat 56e is connected with the circular pipe 56b through the counterweight block 56d, and the counterweight block 56d adopts a semi-arc structure and is in sliding fit with the circular pipe 56b, and can move circumferentially along with the turning motion of the blades 53 through the movable seat 56, it is possible to improve the stability of the rotation of the blades 53 and to increase the working efficiency of the blades 53, because one cowl 21a2 is correspondingly coupled to one radiator shroud 21c, and the first heat dissipation nozzle 21b is formed to have a vertical length smaller than that of the second heat dissipation nozzle 21d, in the drying preheating process, preheating parts with different shapes can be efficiently preheated, the blockage of the heat dissipation nozzle 21d to cause the air flow to be blocked is avoided, since the heat conduction rods 21a4 are provided in an axisymmetric configuration with four and two heat conduction rods are disposed in a group inside the cowling 21a2, the heat conduction rod 21a4 is connected with the electrothermal ring 21a7 through the heat conduction block 21a6, and the heat conduction rod 21a4 is connected with the rotating shaft 26 through the rotating disk 21a3, therefore, the roller 24 drives the heat conduction rod 21a4 to rotate during the process of moving the preheating seat 21 up and down, so that the heat dissipation block 21a5 moves circumferentially, and heat is efficiently and uniformly distributed on the preheating piece under the action of the flowing property of the air flow.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but rather, is capable of numerous changes and modifications in various forms without departing from the spirit or essential characteristics thereof, and it is intended that the invention be limited not by the foregoing descriptions, but rather by the appended claims and their equivalents.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a forging and pressing spare preheating device, its structure includes screw rod (1), preheating device (2), preheats straight section of thick bamboo (3), spacing grid (4), wind direction from changing device (5), fixed fan housing (6), motor (7), support (8), its characterized in that:

support (8) top be equipped with fixed fan housing (6), fixed fan housing (6) top be equipped with and preheat straight section of thick bamboo (3), preheat straight section of thick bamboo (3) inside and be equipped with screw rod (1), fixed fan housing (6) bottom be equipped with motor (7), fixed fan housing (6) inside be equipped with wind direction from change device (5), wind direction from change device (5) top be equipped with preheating device (2), preheat straight section of thick bamboo (3) bottom and be equipped with spacing grid (4).

2. A preform preheating device as claimed in claim 1, wherein: preheating device (2) constitute including preheating seat (21), spacing outer circular frame (22), pedestal (23), gyro wheel (24), straight rail (25), pivot (26), preheating seat (21) top be equipped with spacing outer circular frame (22), preheating seat (21) both sides be equipped with pedestal (23), pedestal (23) central point put and be equipped with pivot (26), pivot (26) front end be equipped with gyro wheel (24), gyro wheel (24) rear end be equipped with straight rail (25).

3. A preform preheating device as claimed in claim 2, wherein: preheating seat (21) constitute including heating mechanism (21a), first heat dissipation mouth (21b), heat dissipation cover (21c), second heat dissipation mouth (21d), circle seat (21e), lower wind gap (21f), last magnetic sheet (21g), nut (21h), circle seat (21e) bottom be equipped with nut (21h), nut (21h) bottom be equipped with magnetic sheet (21g), circle seat (21e) bottom be equipped with down wind gap (21f), circle seat (21e) inside be equipped with heating mechanism (21a), circle seat (21e) top be equipped with heat dissipation cover (21c), heat dissipation cover (21c) top arrange and have first heat dissipation mouth (21b) and second heat dissipation mouth (21 d).

4. A preform preheating device as claimed in claim 3, wherein: the heating mechanism (21a) comprises a ventilation elbow (21a1), a fairing (21a2), a rotary table (21a3), a heat conduction rod (21a4), a heat dissipation block (21a5), a heat conduction block (21a6), an electric heating ring (21a7) and a fixing frame (21a8), wherein the outer ring of the fixing frame (21a8) is provided with the electric heating ring (21a7), the two sides of the electric heating ring (21a7) are provided with the heat conduction blocks (21a6), the two sides of the fixing frame (21a8) are provided with the rotary table (21a3), the front end of the rotary table (21a3) is provided with the heat conduction rod (21a4), the heat dissipation blocks (21a5) are arranged on the heat conduction rod (21a4), the fairing (21a7) is arranged below the electric heating ring (21a7), and the ventilation elbow (21a1) is arranged below the fixing frame (21a 8).

5. A preform preheating device as claimed in claim 1, wherein: wind direction from changing device (5) constitute including circle frame (51), activity magnetic stripe (52), blade (53), connecting axle (54), fixed magnetic stripe (55), diversion balance mechanism (56) outer lane on be equipped with blade (53), blade (53) rear end be equipped with connecting axle (54), connecting axle (54) rear end be equipped with circle frame (51), circle frame (51) inside be equipped with activity magnetic stripe (52), circle frame (51) bottom be equipped with fixed magnetic stripe (55).

6. A preform preheating device as claimed in claim 5, wherein: the direction-changing balancing mechanism (56) comprises a fixed circular ring (56a), a ring pipe (56b), a shaft sleeve (56c), a balancing weight (56d) and a movable seat (56e), wherein the shaft sleeve (56c) is arranged inside the fixed circular ring (56a), the ring pipe (56b) is arranged on the outer ring of the shaft sleeve (56c), the movable seat (56e) is arranged inside the ring pipe (56b), and the balancing weight (56d) is arranged inside the ring pipe (56 b).