CN114229509A - Quenching production line of cartridge case - Google Patents

Quenching production line of cartridge case Download PDF

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Publication number
CN114229509A
CN114229509A CN202111467941.2A CN202111467941A CN114229509A CN 114229509 A CN114229509 A CN 114229509A CN 202111467941 A CN202111467941 A CN 202111467941A CN 114229509 A CN114229509 A CN 114229509A
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CN
China
Prior art keywords
feeding
material distribution
cartridge case
quenching
distributing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111467941.2A
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Chinese (zh)
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CN114229509B (en
Inventor
段小强
洪涛
金鑫
翁全璞
张学武
尹江涛
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ZHENGZHOU KECHUANG ELECTRONIC CO Ltd
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ZHENGZHOU KECHUANG ELECTRONIC CO Ltd
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Priority to CN202111467941.2A priority Critical patent/CN114229509B/en
Publication of CN114229509A publication Critical patent/CN114229509A/en
Application granted granted Critical
Publication of CN114229509B publication Critical patent/CN114229509B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/42—Devices for emptying otherwise than from the top using belt or chain conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G29/00—Rotary conveyors, e.g. rotating discs, arms, star-wheels or cones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/02—Devices for feeding articles or materials to conveyors
    • B65G47/04—Devices for feeding articles or materials to conveyors for feeding articles
    • B65G47/12—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles
    • B65G47/14—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding
    • B65G47/1407—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding the articles being fed from a container, e.g. a bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/16—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for explosive shells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention provides a quenching production line of a cartridge case, which comprises an automatic feeding production line, wherein the automatic feeding production line comprises an automatic feeding system and a quenching system; the automatic feeding system comprises a feeding hopper, a feeding conveyor belt, a distribution bin and a material channel; the feeding conveyor belt is arranged between the feeding hopper and the feeding hole of the material distribution bin; the quenching system comprises a rotating disc and a first induction heater, a plurality of cartridge case positions are uniformly distributed on the outer ring of the rotating disc along the circumferential direction, the outlet of the material channel is aligned with the outer ring position of the cartridge case positions on the rotating disc, and the cartridge cases in the material channel sequentially slide into the cartridge case positions on the rotating disc along with the rotation of the rotating disc; the first induction heater is arranged corresponding to a part of cartridge case positions on the rotating disc and is arranged at the downstream position of the material channel along the rotating direction of the rotating disc; the first induction heater is used for carrying out induction heating on the port of the cartridge case, and the port of the cartridge case is naturally cooled after being heated to a set temperature, so that the quenching process is completed.

Description

Quenching production line of cartridge case
Technical Field
The invention belongs to the technical field of quenching equipment, and particularly relates to a quenching production line of a cartridge case.
Background
The bullet is composed of four parts, that is, a bullet, a shell, a propellant powder and a primer. For a good bullet, not only each component needs to have excellent performance, but also the four components need to be orderly inlaid, closely related and complementary. The shell case is an important component of the bullet, and the shell case mainly has the functions of primer installation, gunpowder filling and bullet installation. When the bullet is fired, the bottom edge deforms, the firing pin impacts the primer, the primer detonates the gunpowder, so that the pressure and the temperature in the shell suddenly increase, and when the pressure rises to 250-500 kg/cm2, the bullet is separated from the shell and starts to start. Therefore, in order to withstand sufficient pressure, the casing must have a certain hardness, or else, the bore may occur, so that the casing may have a certain hardness during processing.
The manufacturing of the cartridge case mainly comprises the processing of metal, and principally, an extrusion method is used as a main method. However, compared with the bullet, the length-width ratio of the bullet shell is larger, the deformation amount is large, and the requirements on the processing force and the processing temperature are higher. The extrusion manufacturing of the cartridge case generally uses a backward extrusion method in China. The so-called "extrusion" process is one in which a relatively soft metal blank is brought into contact with a relatively hard stamping device under great pressure to extrude the designed shape. The basic principle of the backward extrusion method is as follows: the blank is held in place with the metal flowing in a direction opposite to the direction of motion of the apparatus. After the processing by the backward extrusion method, the cartridge case barrel is basically molded, then the waste formed above the cartridge case barrel is cut off, and the manufacturing process of the cartridge case is basically finished after the cleaning of chemical reagents and the surface treatment of the bottom of the cartridge case.
The shell is made of copper and steel; aiming at the processing technology of the steel cartridge case; in order to ensure the hardness of the steel cartridge case, the steel cartridge case needs to be quenched, and the hardness can meet the requirement, so that the prior cartridge case quenching process has a series of problems of high pollution, low resource utilization rate, low automation degree, low efficiency and the like.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a quenching production line of a cartridge case, which at least solves the problems of low automation degree, low efficiency and the like of the prior quenching of the cartridge case.
In order to achieve the above purpose, the invention provides the following technical scheme:
the quenching production line of the cartridge case comprises an automatic feeding production line, wherein the automatic feeding production line comprises an automatic feeding system and a quenching system;
the automatic feeding system comprises a feeding hopper, a feeding conveyor belt, a distribution bin and a material channel; the feeding hopper is used for storing the cartridge cases, and the feeding conveyor belt is arranged between a discharge hole of the feeding hopper and a feed inlet of the distribution bin and is used for conveying the cartridge cases in the feeding hopper into the distribution bin; the distribution bin is used for orderly arranging the cartridge cases into the material channel in a uniform posture, the axis of the cartridge cases in the material channel is horizontal, and the plurality of cartridge cases are arranged in parallel along the extending direction of the material channel;
the quenching system comprises a rotating disc and a first induction heater, a plurality of cartridge case positions are uniformly distributed on the outer ring of the rotating disc along the circumferential direction, the outlet of the material channel is aligned with the outer ring position of the cartridge case positions on the rotating disc, and the cartridge cases in the material channel sequentially slide into the cartridge case positions on the rotating disc along with the rotation of the rotating disc;
the first induction heater is arranged corresponding to a part of cartridge case positions on the rotating disc and is arranged at the downstream position of the material channel along the rotating direction of the rotating disc; the first induction heater is used for carrying out induction heating on the port of the cartridge case, and the port of the cartridge case is naturally cooled after being heated to a set temperature, so that the quenching process is completed.
In the quenching production line of the cartridge case, the feeding hopper is preferably in a funnel shape with a large upper part and a small lower part; the feeding conveyor belt is supported and obliquely arranged through a first feeding support and a second feeding support, the length of the first feeding support is shorter than that of the second feeding support, the first feeding support is arranged close to the feeding hopper, the second feeding support is arranged close to the feeding bin, and the feeding conveyor belt is obliquely arranged from a bottom discharge port of the feeding hopper to a top opening of the feeding bin;
the feeding conveyor belt is provided with a plurality of cartridge case positions in parallel along the conveying direction, and the axis directions of the cartridge case positions on the feeding conveyor belt are all horizontally arranged so as to sequentially and orderly feed the cartridge cases into the distribution bin;
and a feeding slide way is arranged between the feeding transmission belt and the material distribution bin, the feeding slide way inclines towards the inside of the material distribution bin, and the cartridge case is guided into the material distribution bin along the feeding slide way.
In the quenching production line of the cartridge case, preferably, the material distribution bin is arranged obliquely, and a material distribution disc is arranged at the bottom in the material distribution bin;
the lower surface of the material distribution disc is fixedly provided with a material distribution ring, a plurality of long material distribution teeth and a plurality of short material distribution teeth are sequentially and uniformly arranged on the material distribution disc at the periphery of the material distribution ring, the long material distribution teeth and the short material distribution teeth are arranged at intervals, the short material distribution teeth extend along the radial direction of the material distribution disc, and the short material distribution teeth are positioned between the outermost ring of the material distribution disc and the outer ring of the material distribution ring;
the long distributing teeth extend along the radial direction of the distributing disc, the long distributing teeth extend out of the outermost ring of the distributing disc, and the long distributing teeth are positioned between the inner wall of the distributing bin and the outer ring of the distributing ring;
the distance between the material distribution disc and the inner wall of the material distribution bin is larger than or equal to the radial diameter of a shell, the distance between two adjacent long material distribution teeth is larger than or equal to the axial length of a shell, and one shell can be accommodated between the adjacent long material distribution teeth and the short material distribution teeth.
In the quenching production line of the cartridge case, preferably, a material bin seat is arranged below the material distribution bin, a rotatable adjusting seat is arranged at the top of the material bin seat, one end of the adjusting seat is fixed at the bottom of the material distribution bin, and the inclination angle of the material distribution bin is adjusted by adjusting the angle of the adjusting seat;
the bottom of branch feed bin corresponds short branch material tooth position and is provided with the discharge gate, and the axis of discharge gate extends along the horizontal direction, the material is said and is corresponded the discharge gate sets up, the material is said and is fixed the bottom of branch feed bin.
According to the quenching production line of the cartridge case, preferably, the automatic feeding system further comprises a material distribution motor, a material distribution reduction box and a material distribution bearing seat, and a through hole is formed in the center of the material distribution bin; the fixed end of the material distribution bearing seat is fixed at the bottom of the material distribution bin, the rotating end of the material distribution bearing seat passes through the through hole to be fixedly connected with the material distribution disc, and a thrust ball bearing is arranged between the fixed end and the rotating end of the material distribution bearing seat;
the fixed end of the material distributing bearing seat is fixedly connected with the material distributing speed reducer, the input end of the material distributing speed reducer is provided with a material distributing motor, the material distributing motor is in transmission connection with the input end of the material distributing speed reducer, and the output end of the material distributing speed reducer is connected with the rotating end of the material distributing bearing seat.
In the quenching line of cartridge cases as described above, preferably, the quenching system includes a first magazine on which the rotating disc is rotatably disposed;
the rotating disc comprises a supporting plate, a material supporting plate and a rotating material tray which are arranged from bottom to top, the supporting plate and the material supporting plate are fixed together,
the upper surface of the rotating tray is provided with cartridge shell positions in a central symmetry manner, the center of the rotating tray is provided with a spline shaft, the spline shaft penetrates through the supporting plate and the material supporting plate and is fixed with the rotating tray at the upper end of the spline shaft, a quenching station bearing seat is arranged below the rotating tray and corresponds to the position of the spline shaft, a first reduction gearbox is arranged below the quenching station bearing seat, and the first reduction gearbox is in transmission connection with a first motor;
the first induction heater is of a U-shaped structure, and the front ends of a plurality of cartridge positions of the rotating disk are positioned in the U-shaped space of the first induction heater, so that the ports of the cartridge are positioned in the heating range of the first induction heater.
In the quenching production line of the cartridge case, preferably, a tuyere is arranged at a position downstream of the first induction heater in the rotation direction of the rotating disc, and the tuyere is fixed on the first material tray frame through a tuyere support;
in the direction of rotation along the rotary disk, in the low reaches of tuyere, be provided with the blanking mouth that vertical direction link up on backup pad, the flitch that props and the charging tray frame in the same position to when making the rotary disk rotate this position, can carry out the unloading from the blanking mouth.
In the quenching production line of cartridge cases, preferably, a first induction heater bracket is arranged on one side of the first magazine rack, a first auxiliary machine head is slidably arranged on the first induction heater bracket, the first induction heater is fixed on the first auxiliary machine head and is electrically connected with the first auxiliary machine head, and the first auxiliary machine head is connected to an induction power supply through a cable;
the first auxiliary machine head is provided with two sliding rails in parallel, each sliding rail is provided with a lower sliding block in a sliding manner, the lower sliding blocks are fixed with upper sliding blocks, the upper parts of the upper sliding blocks are fixedly connected with the auxiliary machine platform, and the first auxiliary machine head is arranged on the auxiliary machine platform;
the middle of the two sliding rails is provided with a screw rod in a rotating mode through a support, the screw rod is connected with a sliding nut in a threaded mode, the sliding nut is fixedly connected with the bottom of the auxiliary engine platform, the end portion of the screw rod is connected with an adjusting handle, the screw rod is driven to rotate through rotating the adjusting handle, so that the sliding nut drives the auxiliary engine platform to move along the sliding rails, and the position of the induction heater relative to the rotating disc is adjusted.
The quenching production line of the cartridge case preferably further comprises a water cooling machine, cooling circulation water paths are arranged between the water cooling machine and the induction power supply, between the first auxiliary machine head and between the water cooling machine and the first induction heater, and the water cooling machine is used for cooling the induction power supply, the auxiliary machine head and the induction heater so as to ensure the normal operation of equipment;
the quenching production line further comprises an oil fume removing machine, an oil fume pipeline is connected to the oil fume removing machine, and an oil fume inlet at the end part of the oil fume pipeline is arranged on one side of the first induction heater.
The quenching production line of the cartridge case preferably further comprises a control system, the control system is connected with the water cooling machine, the induction power supply, the oil fume removal machine and each motor through cables, and the control system is used for coordinating and controlling each component in the quenching production line.
Has the advantages that: the quenching production line has a manual feeding production line and an automatic feeding production line which are arranged in parallel, and two working modes of a double station and a single station can be selected. The quenching production line of the invention has adjustable speed. The quenching production line has low noise and little pollution. The quenching adopts an induction power supply for electromagnetic induction quenching, and the noise is low; the oil smoke clearing machine is matched during working, so that the pollution is small, and the working environment is greatly improved.
Drawings
FIG. 1 is a schematic three-dimensional structure diagram of a quenching production line according to an embodiment of the invention;
FIG. 2 is a schematic three-dimensional structure diagram of a material distributing hopper in the embodiment of the invention;
FIG. 3 is a schematic three-dimensional structure diagram of an automatic loading system according to an embodiment of the present invention;
FIG. 4 is a schematic three-dimensional structure diagram of the tray rack and the rotating disk in the embodiment of the invention
FIG. 5 is a schematic three-dimensional structure diagram of another angle between the tray rack and the rotating disk in the embodiment of the invention;
FIG. 6 is a schematic three-dimensional view of an induction heater fixture in an embodiment of the present invention;
fig. 7 is a schematic three-dimensional structure diagram of an induction heater according to an embodiment of the present invention.
In the figure: 1. a feeding hopper, 2, a feeding conveyor belt, 3, a first feeding support, 4, a second feeding support, 5, a feeding slideway, 6, a material dividing bin, 7, a material dividing motor, 8, a material channel, 9, a first material tray frame, 10, a transverse conveyor belt, 11, a first induction heater support, 12, a first auxiliary machine head, 13, a first induction heater, 14, a second material tray frame, 15, a manual feeding hopper, 16, a longitudinal conveyor belt, 17, a conveyor belt motor, 18, a material discharging frame, 19, a second induction heater support, 20, a second auxiliary machine head, 21, a second induction heater, 22, a control cabinet, 23, a water cooler, 24, an induction power supply, 25, an oil fume remover support, 26, an oil fume remover, 27, an oil fume pipeline, 28, an oil fume inlet, 29, a material dividing reduction box, 30, a material dividing bearing seat, 31, a material dividing tray, 32, short teeth, 33 and long material dividing teeth, 34. the material distribution device comprises a material distribution ring 35, a material channel base 36, a material channel upper cover plate 37, a material bin base 38, an adjustment support column 39, an adjustment base 40, a tuyere support 41, a tuyere 42, a first nut 43, a spline shaft 44, a second nut 45, a rotary material tray 46, a material supporting plate 47, a supporting plate 48, a first motor 49, a first reduction gearbox 50, a sliding rail 51, an adjustment handle 52, a lower sliding block 53, an upper sliding block 54 and an auxiliary machine platform.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
According to the specific embodiment of the invention, as shown in fig. 1-7, the invention provides a quenching production line of a cartridge case, the quenching production line comprises an automatic feeding production line, the automatic feeding production line comprises an automatic feeding system and a quenching system; the automatic feeding system comprises a feeding hopper 1, a feeding conveyor belt 2, a distribution bin 6 and a material channel 8; the feeding hopper 1 is used for storing shells, and the feeding conveyor belt 2 is arranged between the feeding hole of the distributing bin 6 and the discharge hole of the feeding hopper 1 and is used for conveying the shells in the feeding hopper 1 into the distributing bin 6; the material distribution bin 6 is used for adjusting the postures of the shells and neatly arranging the shells into the material channel 8 in a uniform posture, the axes of the shells in the material channel 8 are horizontal, and the shells are arranged in parallel and distributed along the extending direction of the material channel 8; the quenching system comprises a rotating disk and a first induction heater 13, a plurality of cartridge case positions are uniformly distributed on the outer ring of the rotating disk along the circumferential direction, the cartridge case positions are arranged on the rotating disk in a centrosymmetric manner, the outlet of a material channel 8 is aligned with the outer ring position of the cartridge case position on the rotating disk, the cartridge cases in the material channel 8 sequentially slide into the cartridge case positions on the rotating disk along with the rotation of the rotating disk, the cartridge case ports (namely the front end of the cartridge case and the position of a mounting belt head) on the rotating disk face the outer side of the rotating disk, and the rear end (namely the closed section of the cartridge case and the position of the mounting primer) of the cartridge case faces the circle center of the rotating disk; the first induction heater 13 is arranged corresponding to a part of the cartridge case position on the rotating disc, the first induction heater 13 is sleeved at the port position of the cartridge case, and the first induction heater 13 is arranged at the downstream position of the material channel 8 along the rotating direction of the rotating disc; the first induction heater 13 is used for heating the port of the cartridge case, and after the cartridge case is heated to a set quenching temperature, the cartridge case is naturally cooled in the air to complete a quenching process.
In this embodiment, the material channel 8 includes a base 35 of the material channel 8 and an upper cover plate 36 of the material channel 8, and the upper cover plate 36 of the material channel 8 is provided with a lightening hole for lightening the weight of the material channel 8.
The feeding hopper 1 is funnel-shaped with a large upper part and a small lower part; the feeding conveyor belt 2 is supported and obliquely arranged through a first feeding support 3 and a second feeding support 4, the length of the first feeding support 3 is shorter than that of the second feeding support 4, the first feeding support 3 is arranged close to the feeding hopper 1, and the second feeding support 4 is arranged close to the feeding bin; the feeding conveyor belt 2 is obliquely arranged from a bottom discharge hole of the feeding hopper 1 to the top opening of the feeding bin.
The lower part of the feeding conveyor belt 2 is provided with a driving motor, and the driving motor is used for driving the feeding conveyor belt 2 to rotate from bottom to top around a rotating shaft; the feeding conveyor belt 2 is provided with a plurality of cartridge case positions in parallel along the conveying direction, and the axis directions of the cartridge case positions on the feeding conveyor belt 2 are all horizontally arranged so as to sequentially and orderly feed the cartridge cases into the distribution bin 6; a feeding slide way 5 is arranged between the feeding transmission belt and the material distribution bin 6, the feeding slide way 5 inclines towards the inside of the material distribution bin 6, and the cartridge case is guided into the material distribution bin 6 along the feeding slide way 5.
The material distribution bin 6 is obliquely arranged, and a material distribution disc 31 is arranged at the bottom in the material distribution bin 6; a distributing ring 34 is fixed on the lower surface of the distributing disc 31, a plurality of long distributing teeth 33 and a plurality of short distributing teeth 32 are sequentially and evenly distributed on the distributing disc 31 and positioned on the periphery of the distributing ring 34, the long distributing teeth 33 and the short distributing teeth 32 are arranged at intervals, the short distributing teeth 32 extend along the radial direction of the distributing disc 31, and the short distributing teeth 32 are positioned between the outermost ring of the distributing disc 31 and the outer ring of the distributing ring 34; the long distributing teeth 33 extend along the radial direction of the distributing disc 31, the long distributing teeth 33 extend out of the outermost ring of the distributing disc 31, and the long distributing teeth 33 are positioned between the inner wall of the distributing bin 6 and the outer ring of the distributing ring 34; the distance between the distributing disc 31 and the inner wall of the distributing bin 6 is larger than or equal to the radial diameter of one cartridge case, the distance between two adjacent long distributing teeth 33 is larger than or equal to the axial length of one cartridge case, and one cartridge case can be accommodated between the adjacent long distributing teeth 33 and the short distributing teeth 32.
After the cartridge case falls into the distributing bin 6, the cartridge case firstly falls between two adjacent long distributing teeth 33 at the lowest part of the distributing bin 6, along with the rotation of the distributing tray 31, the cartridge case enters between the adjacent long distributing teeth 33 and short distributing teeth 32, because the front end port part of the cartridge case is light and the rear end closed part is heavy, under the rotation driving action of the long distributing teeth 33, no matter how the posture that the cartridge case enters between the long distributing teeth 33 is, the rear end of the cartridge case enters between the adjacent long distributing teeth 33 and short distributing teeth 32 towards the center of the distributing tray 31 under the action of gravity; therefore, the shells entering between the middle-long distributing teeth 33 and the short distributing teeth 32 of the distributing disc 31 are ensured to have the front end ports facing outwards, and the rear end closed ports of the shells face to the center of the distributing disc 31, so that the unification of the postures of the shells is ensured.
The lower part of the material distribution bin 6 is provided with a bin seat 37, the bin seat 37 is internally provided with an adjusting support column 38 which can stretch relative to the bin seat, and the fixed height of the material distribution bin 6 can be adjusted according to the requirement. A rotatable adjusting seat 39 is arranged at the top of the adjusting support 38, one end of the adjusting seat 39 is fixed at the bottom of the material distribution bin 6, and the inclination angle of the material distribution bin 6 is adjusted by adjusting the angle of the adjusting seat; a discharge port is arranged at the bottom of the material distributing bin 6 corresponding to the short distributing teeth 32, the discharge port extends along the horizontal direction, the material channel 8 is arranged corresponding to the discharge port, and the material channel 8 is fixed at the bottom of the material distributing bin 6.
The automatic feeding system also comprises a material distributing motor 7, a material distributing reduction box 29 and a material distributing bearing seat 30, and a through hole is formed in the center of the material distributing bin 6; the fixed end of the material distributing bearing seat 30 is fixed at the bottom of the material distributing bin 6, and the rotating end of the material distributing bearing seat 30 passes through the through hole to be fixedly connected with the material distributing disc 31; the fixed end of the material-distributing bearing seat 30 is fixedly connected with the material-distributing speed reducer, one side of the material-distributing speed reducer is provided with a material-distributing motor 7, the material-distributing motor 7 is in transmission connection with the input end of the material-distributing speed reducer, and the output end of the material-distributing speed reducer is connected with the rotating end of the material-distributing bearing seat 30.
In the present embodiment, a thrust ball bearing is provided between the fixed end and the rotating end of the material-dividing bearing seat 30; in other embodiments, the bearing in the material-separating bearing seat 30 may also be a common ball bearing, at this time, the material-separating bearing seat 30 is fixed below the material-separating bin 6, the rotating shaft in the material-separating bearing seat 30 extends into the material-separating bin 6, and the rotating shaft is connected with the material-separating tray 31 through a key, so that the rotating shaft drives the material-separating tray 31 to rotate.
The quenching system comprises a first material tray frame 9, and the rotating disc is rotatably arranged on the first material tray frame 9; the rotary disk comprises a supporting plate 47, a material supporting plate 46 and a rotary tray 45 which are arranged from bottom to top, the supporting plate 47 and the material supporting plate 46 are fixed together, and the upper surface of the rotary tray 45 is provided with cartridge case positions in central symmetry. A spline shaft 43 is arranged at the center of the rotating disc, penetrates through the supporting plate 47 and the material supporting plate 46 and is fixed with the rotating tray 45 at the upper end of the spline shaft 43, a tray fixing plate is arranged above the rotating tray 45, and is screwed on the spline shaft 43 through a first nut 42 and a second nut 44 so as to fix the tray fixing plate and the rotating tray 45 on the spline shaft 43, so that the spline shaft 43 can drive the rotating tray 45 to rotate; the diameter of the material tray fixing plate is smaller than that of the rotary material tray 45, and the material tray fixing plate can share the stress received by the rotary material tray 45 during fixing, so that the condition that the stress concentration is generated on the rotary material tray 45 is avoided; set up first nut and second nut and have the anticreep effect, can guarantee that rotatory charging tray 45 is firmly fixed.
Prop the flitch 46 and set up between backup pad 47 and rotatory charging tray 45, and backup pad 47 is the metal material, props the flitch 46 and is the bakelite material, props the flitch 46 and can play insulating thermal-insulated effect.
A quenching station bearing seat is arranged at the position corresponding to the spline shaft below the rotating disc, a first reduction gearbox 49 is arranged below the quenching station bearing seat, and the first reduction gearbox 49 is in transmission connection with a first motor 48; the first induction heater 13 is a U-shaped structure, and a plurality of cartridge cases of the rotating disk are positioned in the U-shaped space of the first induction heater 13.
A tuyere 41 is provided at a position downstream of the first induction heater 13 in the rotation direction of the rotary disk, and the tuyere 41 is fixed to the first magazine 9 by a tuyere holder 40.
In the rotating direction of the rotating disc, a blanking port which is through in the vertical direction is arranged at the same position on the supporting plate 47, the material supporting plate 46 and the material tray frame at the downstream of the air nozzle, so that when the rotating disc rotates to the position, blanking can be carried out from the blanking port; a conveying belt is arranged below the blanking port, a blanking bin is arranged at the end part of the conveying belt, and the blanking bin is arranged on a blanking frame 18.
A first induction heater support 11 is arranged on one side of the first material tray frame 9, a first auxiliary machine head 12 is arranged on the first induction heater support 11 in a sliding mode, a first induction heater 13 is fixed on the first auxiliary machine head 12 and is electrically connected with the first auxiliary machine head 12, and the first auxiliary machine head 12 is connected to an induction power supply 24 through a cable; the first auxiliary machine head 12 is provided with two slide rails 50 in parallel, each slide rail 50 is provided with a lower slide block 52 in a sliding manner, the lower slide blocks 52 are fixed with upper slide blocks 53, the upper parts of the upper slide blocks 53 are fixedly connected with an auxiliary machine platform 54, and the first auxiliary machine head 12 is arranged on the auxiliary machine platform 54.
A screw rod is rotatably arranged between the two slide rails 50 through a support, a sliding nut is connected to the screw rod in a threaded manner, the sliding nut is fixedly connected with the bottom of the auxiliary machine platform 54, an adjusting handle 51 is connected to the end of the screw rod, and the screw rod is driven to rotate by rotating the adjusting handle 51, so that the sliding nut drives the auxiliary machine platform 54 to move along the slide rails 50, and the position of the induction heater relative to the rotating disc is adjusted. In the embodiment of the present application, the first sub-machine head 12 and the second sub-machine head 20 are both transformers.
The quenching production line further comprises a water cooling machine 23, cooling circulation water paths are arranged among the water cooling machine 23, the induction power supply 24, the first auxiliary machine head 12 and the first induction heater 13, and the water cooling machine 23 is used for cooling the induction power supply 24, the auxiliary machine head and the induction heater so as to ensure the normal operation of the equipment; the quenching production line also comprises an oil smoke remover 26, and the oil smoke remover 26 is arranged on the oil smoke remover bracket 25. The fume removing machine 26 is connected with a fume duct 27, a fume inlet 28 at the end of the fume duct 27 is arranged at one side of the first induction heater 13, when the induction heater quenches the cartridge case, fume is generated, and the fume inlet 28 has negative pressure which can suck away the fume generated during the quenching of the cartridge case, so as to reduce pollution during the quenching.
The quenching production line also comprises a control system, the control system is connected with the water cooling machine 23, the induction power supply 24, the oil smoke remover 26 and all motors through cables, and the control system is used for coordinating and controlling all components in the quenching production line. In this embodiment, the control system is a control cabinet 22, and the control cabinet 22 includes controllers such as a PLC controller and a motor controller.
The automatic feeding quenching working line in the quenching production line can realize automatic operation and can automatically finish quenching operation on the cartridge case. The working process of the automatic feeding quenching working line comprises the following steps: the method comprises the following steps that shells to be quenched are placed into a feeding hopper 1, the shells are sequentially conveyed into a distributing bin 6 by a feeding conveyor belt 2, the shells falling into the distributing bin 6 roll to the lowest part of the distributing bin 6 due to the inclined arrangement of the distributing bin 6, the shells firstly enter between two adjacent long distributing teeth 33 on a distributing tray 31, the shells enter between the adjacent long distributing teeth 33 and the short distributing teeth 32 along with the rotation of the distributing tray 31, when the shells are rotated to a material channel 8 by the distributing tray 31, the shells enter shell positions on a rotating tray 45 along a slideway 8 of the material channel, and the shells in the material channel 8 sequentially enter the shell positions in the rotating tray 45 along with the rotation of the rotating tray 45; the rotating material tray 45 continues to rotate to bring the cartridge case into the heating range of the induction heater, the induction heater heats the port of the cartridge case, after the cartridge case is heated to the set quenching temperature, the rotating material tray 45 rotates to drive the cartridge case to rotate out of the heating coverage range of the induction heater, and then the cartridge case is naturally cooled in the air to finish the quenching process; after the quenching of the cartridge case is completed, the cartridge case is brought into the cooling range of the air nozzle, the cooled cartridge case is rotationally brought to a blanking port of the storage bin frame, the cartridge case falls onto the transverse conveyor belt 10, the transverse conveyor belt 10 firstly conveys the quenched cartridge case to the longitudinal conveyor belt 16, and the longitudinal conveyor belt 16 conveys the cartridge case to a blanking bin, so that the whole quenching process of the cartridge case is completed.
In other embodiments of the present application, the longitudinal conveyor 16 is connected with a conveyor motor 17, and a manual feeding production line is further disposed on one side of the quenching production line, wherein only the manual feeding system and the manual discharging system in the manual feeding production line are different from the quenching production line. As shown in fig. 1, the manual feeding production line further includes a second tray rack 14, a second induction heater 21, a second induction heater bracket 19, and a second auxiliary machine head 20, and each device is arranged in parallel in the manual raw material production line and the quenching production line, and the devices are the same as the quenching production line, which is not repeated herein. Wherein the fume inlet 28 on the fume duct 27 is arranged between the first induction heater 13 of the quenching production line and the second induction heater 21 of the manual feeding production line. In the embodiment of the present application, the second sub-machine head 20 is a transformer.
The manual feeding system is a manual feeding hopper 15, the manual feeding hopper 15 is fixed on the second tray rack 14 through a support, and the manual feeding hopper 15 comprises an inverted trapezoidal structure with a large upper part and a small lower part and a rectangular structure positioned above the inverted trapezoidal structure; the thickness of manual feeding funnel 15 is the axial length of a shell case to in the manual work is neatly piled up the shell case in manual feeding funnel 15, be connected with the slide in the below of manual feeding funnel 15, the slide slope sets up, gliding sectional area is the rectangle, and this rectangle just can hold the cross-section of a shell case, thereby guarantees that the shell case can be one in the shell case position on the second charging tray frame 14 that falls down naturally. The manual blanking system is a material collecting box, and the cartridge case falls into the material collecting box after quenching is finished.
In conclusion, the quenching production line for the shell case with high efficiency provided by the invention is provided with a manual feeding production line and an automatic feeding production line which are arranged in parallel, and two working modes of a double-station working mode and a single-station working mode can be selected.
The quenching production line of the invention has adjustable speed. The feeding speed of the automatic feeding production line can be adjusted by adjusting the rotating speed of a motor of the conveyor belt through the control system; the feeding speed of the manual feeding quenching station can be automatically adjusted according to the process requirement; the quenching speeds of the two stations can be adjusted by adjusting the rotating speed of a driving motor of the rotating tray and the power of the induction power supply through the control system.
The quenching production line has low noise and little pollution. The quenching adopts an induction power supply for electromagnetic induction quenching, and the noise is low; the oil smoke clearing machine is matched during working, so that the pollution is small, and the working environment is greatly improved.
The quenching production line has accurate temperature control: the control system is adopted to control the operation of the equipment, and can also monitor the operation condition of each equipment in real time, so that the man-machine interaction is good.
The above description is only exemplary of the invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the invention is intended to be covered by the appended claims.

Claims (10)

1. The quenching production line of the cartridge case is characterized by comprising an automatic feeding production line, wherein the automatic feeding production line comprises an automatic feeding system and a quenching system;
the automatic feeding system comprises a feeding hopper, a feeding conveyor belt, a distribution bin and a material channel; the feeding hopper is used for storing the cartridge cases, and the feeding conveyor belt is arranged between a discharge hole of the feeding hopper and a feed inlet of the distribution bin and is used for conveying the cartridge cases in the feeding hopper into the distribution bin; the distribution bin is used for orderly arranging the cartridge cases into the material channel in a uniform posture, the axis of the cartridge cases in the material channel is horizontal, and the plurality of cartridge cases are arranged in parallel along the extending direction of the material channel;
the quenching system comprises a rotating disc and a first induction heater, a plurality of cartridge case positions are uniformly distributed on the outer ring of the rotating disc along the circumferential direction, the outlet of the material channel is aligned with the outer ring position of the cartridge case positions on the rotating disc, and the cartridge cases in the material channel sequentially slide into the cartridge case positions on the rotating disc along with the rotation of the rotating disc;
the first induction heater is arranged corresponding to a part of cartridge case positions on the rotating disc and is arranged at the downstream position of the material channel along the rotating direction of the rotating disc; the first induction heater is used for carrying out induction heating on the port of the cartridge case, and the port of the cartridge case is naturally cooled after being heated to a set temperature, so that the quenching process is completed.
2. The quenching production line of shells according to claim 1, characterized in that said feeding hopper is funnel-shaped with big top and small bottom; the feeding conveyor belt is supported and obliquely arranged through a first feeding support and a second feeding support, the length of the first feeding support is shorter than that of the second feeding support, the first feeding support is arranged close to the feeding hopper, the second feeding support is arranged close to the feeding bin, and the feeding conveyor belt is obliquely arranged from a bottom discharge port of the feeding hopper to a top opening of the feeding bin;
the feeding conveyor belt is provided with a plurality of cartridge case positions in parallel along the conveying direction, and the axis directions of the cartridge case positions on the feeding conveyor belt are all horizontally arranged so as to sequentially and orderly feed the cartridge cases into the distribution bin;
and a feeding slide way is arranged between the feeding transmission belt and the material distribution bin, the feeding slide way inclines towards the inside of the material distribution bin, and the cartridge case is guided into the material distribution bin along the feeding slide way.
3. The quenching production line of the shells according to claim 2, characterized in that the material distribution bin is arranged obliquely, and a material distribution disc is arranged at the bottom in the material distribution bin;
the lower surface of the material distribution disc is fixedly provided with a material distribution ring, a plurality of long material distribution teeth and a plurality of short material distribution teeth are sequentially and uniformly arranged on the material distribution disc at the periphery of the material distribution ring, the long material distribution teeth and the short material distribution teeth are arranged at intervals, the short material distribution teeth extend along the radial direction of the material distribution disc, and the short material distribution teeth are positioned between the outermost ring of the material distribution disc and the outer ring of the material distribution ring;
the long distributing teeth extend along the radial direction of the distributing disc, the long distributing teeth extend out of the outermost ring of the distributing disc, and the long distributing teeth are positioned between the inner wall of the distributing bin and the outer ring of the distributing ring;
the distance between the material distribution disc and the inner wall of the material distribution bin is larger than or equal to the radial diameter of a shell, the distance between two adjacent long material distribution teeth is larger than or equal to the axial length of a shell, and one shell can be accommodated between the adjacent long material distribution teeth and the short material distribution teeth.
4. The quenching production line of the cartridge case as claimed in claim 3, wherein a cartridge seat is arranged below the material distribution bin, a rotatable adjusting seat is arranged on the top of the cartridge seat, one end of the adjusting seat is fixed on the bottom of the material distribution bin, and the inclination angle of the material distribution bin is adjusted by adjusting the angle of the adjusting seat;
the bottom of branch feed bin corresponds short branch material tooth position and is provided with the discharge gate, and the axis of discharge gate extends along the horizontal direction, the material is said and is corresponded the discharge gate sets up, the material is said and is fixed the bottom of branch feed bin.
5. The quenching production line of cartridge cases as claimed in claim 4, wherein the automatic feeding system further comprises a material distribution motor, a material distribution reduction box and a material distribution bearing seat, and a through hole is arranged at the center of the material distribution bin; the fixed end of the material distribution bearing seat is fixed at the bottom of the material distribution bin, the rotating end of the material distribution bearing seat passes through the through hole to be fixedly connected with the material distribution disc, and a thrust ball bearing is arranged between the fixed end and the rotating end of the material distribution bearing seat;
the fixed end of the material distributing bearing seat is fixedly connected with the material distributing speed reducer, the input end of the material distributing speed reducer is provided with a material distributing motor, the material distributing motor is in transmission connection with the input end of the material distributing speed reducer, and the output end of the material distributing speed reducer is connected with the rotating end of the material distributing bearing seat.
6. A quenching line for shells according to claim 5, characterized in that said quenching system comprises a first pallet on which said rotating disc is rotatably arranged;
the rotating disc comprises a supporting plate, a material supporting plate and a rotating material tray which are arranged from bottom to top, the supporting plate and the material supporting plate are fixed together,
the upper surface of the rotating tray is provided with cartridge shell positions in a central symmetry manner, the center of the rotating tray is provided with a spline shaft, the spline shaft penetrates through the supporting plate and the material supporting plate and is fixed with the rotating tray at the upper end of the spline shaft, a quenching station bearing seat is arranged below the rotating tray and corresponds to the position of the spline shaft, a first reduction gearbox is arranged below the quenching station bearing seat, and the first reduction gearbox is in transmission connection with a first motor;
the first induction heater is of a U-shaped structure, and the front ends of a plurality of cartridge positions of the rotating disk are positioned in the U-shaped space of the first induction heater, so that the ports of the cartridge are positioned in the heating range of the first induction heater.
7. The quenching production line of cartridge cases of claim 6, characterized in that a tuyere is provided at a position downstream of the first induction heater in the rotation direction of the rotating disk, the tuyere being fixed to the first magazine by a tuyere holder;
in the direction of rotation along the rotary disk, in the low reaches of tuyere, be provided with the blanking mouth that vertical direction link up on backup pad, the flitch that props and the charging tray frame in the same position to when making the rotary disk rotate this position, can carry out the unloading from the blanking mouth.
8. The quenching production line of shells as claimed in claim 6, wherein a first induction heater bracket is arranged at one side of the first magazine rack, a first auxiliary machine head is slidably arranged on the first induction heater bracket, the first induction heater is fixed on the first auxiliary machine head and is electrically connected with the first auxiliary machine head, and the first auxiliary machine head is connected to an induction power supply through a cable;
the first auxiliary machine head is provided with two sliding rails in parallel, each sliding rail is provided with a lower sliding block in a sliding manner, the lower sliding blocks are fixed with upper sliding blocks, the upper parts of the upper sliding blocks are fixedly connected with the auxiliary machine platform, and the first auxiliary machine head is arranged on the auxiliary machine platform;
the middle of the two sliding rails is provided with a screw rod in a rotating mode through a support, the screw rod is connected with a sliding nut in a threaded mode, the sliding nut is fixedly connected with the bottom of the auxiliary engine platform, the end portion of the screw rod is connected with an adjusting handle, the screw rod is driven to rotate through rotating the adjusting handle, so that the sliding nut drives the auxiliary engine platform to move along the sliding rails, and the position of the induction heater relative to the rotating disc is adjusted.
9. The quenching production line of the cartridge case according to claim 8, further comprising a water cooling machine, wherein cooling circulation water paths are arranged between the water cooling machine and the induction power supply, between the first auxiliary machine head and between the water cooling machine and the first induction heater, and the water cooling machine is used for cooling the induction power supply, the auxiliary machine head and the induction heater so as to ensure the normal operation of the equipment;
the quenching production line further comprises an oil fume removing machine, an oil fume pipeline is connected to the oil fume removing machine, and an oil fume inlet at the end part of the oil fume pipeline is arranged on one side of the first induction heater.
10. The quenching production line of cartridge casings of claim 9, further comprising a control system connected with a water cooling machine, an induction power supply, a fume removal machine and each motor through cables, the control system being used for coordinating and controlling each component in the quenching production line.
CN202111467941.2A 2021-12-03 2021-12-03 Quenching production line of shell case Active CN114229509B (en)

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Application Number Priority Date Filing Date Title
CN202111467941.2A CN114229509B (en) 2021-12-03 2021-12-03 Quenching production line of shell case

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Application Number Priority Date Filing Date Title
CN202111467941.2A CN114229509B (en) 2021-12-03 2021-12-03 Quenching production line of shell case

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CN114229509B CN114229509B (en) 2023-07-11

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1217890A (en) * 1967-05-23 1970-12-31 Usm Corp Improvements in or relating to machines for applying locking patches to threaded elements
US5192506A (en) * 1991-02-14 1993-03-09 P B Diagnostic Systems, Inc. Incubator port closure for automated assay system
CN204298427U (en) * 2014-11-11 2015-04-29 苏州新豪轴承有限公司 A kind of automatic charging device of high-frequency quenching machine
CN206328427U (en) * 2016-12-09 2017-07-14 奉化市永宏汽车零部件有限公司 A kind of screw hardening apparatus by high frequency current
CN210133638U (en) * 2019-05-27 2020-03-10 河南省豫兴包装有限公司 Automatic sleeve feeding device of bottle cap assembling machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1217890A (en) * 1967-05-23 1970-12-31 Usm Corp Improvements in or relating to machines for applying locking patches to threaded elements
US5192506A (en) * 1991-02-14 1993-03-09 P B Diagnostic Systems, Inc. Incubator port closure for automated assay system
CN204298427U (en) * 2014-11-11 2015-04-29 苏州新豪轴承有限公司 A kind of automatic charging device of high-frequency quenching machine
CN206328427U (en) * 2016-12-09 2017-07-14 奉化市永宏汽车零部件有限公司 A kind of screw hardening apparatus by high frequency current
CN210133638U (en) * 2019-05-27 2020-03-10 河南省豫兴包装有限公司 Automatic sleeve feeding device of bottle cap assembling machine

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