An internal heating multi-station warm pier machine

Abstract

The present invention relates to the field of forging technology, and in particular to an internally heated multi-station warm-up machine. Its technical solution includes: a warm-up machine driving assembly, the warm-up machine driving assembly includes a support base, one side of the support base is fixedly connected with an air pump push rod, the air pump push rod is slidably installed with a positioning machine through a hydraulic pump, one side of the warm-up machine driving assembly is installed with a material transmission assembly, and one side of the warm-up machine driving assembly is respectively installed with a positioning assembly, a heat preservation assembly and a corresponding shaping assembly. The present invention uses an arc-shaped clamping block to move outward along an arc-shaped slideway opened inside the arc-shaped clamping block through an arc spring in the arc-shaped clamping block, so that the corresponding mold is exposed to the air, and at the same time, the fan-shaped wheel block rotates in the opposite direction here, and the fan blades outside the fan-shaped wheel block promote the airflow to convert the heat on the corresponding mold, thereby accelerating the heat dissipation of the mold, and also avoiding the temperature difference from being too large to shorten the life of the mold.

Description

Technical Field

[0001] The invention relates to the technical field of forging, in particular to an internally heated multi-station warm forging machine. Background Art

[0002] In extreme environments such as high temperature, high pressure, and high speed, traditional metal materials often cannot meet the performance requirements of spacecraft. High-temperature alloy forgings, with their excellent high-temperature strength, oxidation resistance, and corrosion resistance, have become an indispensable and important material in the aerospace field. Due to the narrow forging temperature range and high sensitivity of process parameters in the hot forming process of high-temperature alloys, the high-strength hot forming process has technical difficulties such as difficulty in accurately controlling the forming temperature, prone to folding, oxidation decarburization, and insufficient stability. Therefore, as a spacecraft installation component, high-temperature alloy products have higher requirements;

[0003] Compared with hot upsetting, warm upsetting can utilize the upsetting pressure of the machine, automatic feeding, automatic cutting, automatic stamping, and automatic blanking, so that the product can be formed in the mold at one time and the number of processes can be reduced. After adopting this process, the cost can be reduced, deep holes and porous parts can be upset, and the problem of complex parts can be solved. Continuous production can improve efficiency. The warm upsetting equipment is an upgrade realized on the cold upsetting equipment, which allows it to upset while heating, solving the problems of material consumption and long production cycle caused by the pre-treatment process of the special hot upsetting equipment.

[0004] In the patent document with the published announcement number CN217393618U, a warm-pier mechanism with the function of heating in the electromagnetic eddy current main mold box is disclosed, including an equipment base and a warm-pier mold base, the warm-pier mold base is installed on the equipment base, scissors and insulating materials are arranged between the equipment base and the warm-pier mold base, and a circulating conduction pipe is arranged at the position where the outer side of the warm-pier mold base connects to the equipment base, a first forming main mold and a second forming main mold are installed on the warm-pier mold base, an electromagnetic eddy current heating coil is arranged in the warm-pier mold base, and then through the structure integrating electromagnetic eddy current heating, shearing and warm-pier molding, and a water circulation cooling channel is arranged inside the device, it is convenient to better carry out part molding processing and improve work efficiency.

[0005] When the above device is in use, the use of water circulation for rapid cooling may cause greater thermal stress in the equipment, thereby affecting the service life of the equipment. If the mold is in a state of alternating hot and cold, it is easy to be affected by the stress caused by thermal expansion and contraction and produce gaps, thereby affecting the production quality. At the same time, the water cooling system is wrapped together with the heated mold to work, which can easily cause the water cooling system to be damaged due to the temperature difference.

[0006] Therefore, the present application proposes an internally heated multi-station warm-heading machine. Summary of the invention

[0007] The purpose of the present invention is to propose an internally heated multi-station warm pier machine to address the problem in the background technology that when the mold is in a state of alternating hot and cold, it is easy to be affected by the stress generated by thermal expansion and contraction, resulting in gaps, thereby affecting the production quality.

[0008] The technical solution of the present invention is as follows: an internally heated multi-station warming machine, comprising a warming machine driving assembly, the warming machine driving assembly comprising a supporting base, one side of the supporting base is fixedly connected with an air pump push rod, the air pump push rod is slidably mounted with a positioning machine through a hydraulic pump, one side of the warming machine driving assembly is mounted with a material transmission assembly, and one side of the warming machine driving assembly is respectively mounted with a positioning assembly, a heat preservation assembly and a corresponding shaping assembly;

[0009] The corresponding shaping assembly comprises an external gear rotatably mounted on the positioning machine platform through a side plate of the positioning machine platform, a sector wheel block is fixedly mounted on one side of the external gear, a circular sliding cavity block is rotatably connected to one side of the side plate of the positioning machine platform, a plurality of hinge plates are hingedly connected to the outer side of the circular sliding cavity block through a receiving groove provided in the circular sliding cavity block, and a spring is fixedly mounted between the hinge plate and the receiving groove, and an arc-shaped pressing block having the same number of hinge plates is fixedly mounted on the side of the sector wheel block facing the hinge plate;

[0010] The interior of the circular sliding cavity block is slidably connected with the same number of telescopic rods through a plurality of arc grooves, and the same number of arc positioning blocks are fixedly installed on one side of the plurality of telescopic rods, and an electric current-type internal heating plate is fixedly installed inside the arc positioning block, and a corresponding mold is installed on one side of the electric current-type internal heating plate through a tilting rod, wherein the same number of arc clamping blocks are fixedly installed on the outer sides of four of the arc positioning blocks, and an arc clamping block is slidably connected between every two of the arc clamping blocks, a hydraulic telescopic rod is fixedly installed on the side of the arc clamping block away from the arc positioning block, and a positioning transmission frame is fixedly installed on one side of the hydraulic telescopic rod.

[0011] Optionally, when the plurality of arc-shaped positioning blocks are in a fitted state, the plurality of arc-shaped positioning blocks and corresponding molds are arranged in a relatively sealed state.

[0012] Optionally, the outer side of the corresponding mold is fixedly mounted with cavity positioning blocks whose number is the same as the current-type internal heating plates, and the current-type internal heating plates are adapted to the cavity positioning blocks, and the tilting rod is hinged between the current-type internal heating plates and the cavity positioning blocks.

[0013] Optionally, the warming machine driving assembly further comprises a first threaded rod, the first threaded rod is rotatably mounted inside the positioning machine, and the positioning transmission frame is slidably mounted on the positioning machine through the threaded guidance of the first threaded rod.

[0014] Optionally, a multi-scraper hole limiting column is rotatably installed on one side of the circular sliding cavity block, the multi-scraper hole limiting column is fixedly installed on the side plate of the positioning machine, and the multi-scraper hole limiting column is slidably installed inside the corresponding mold.

[0015] Optionally, the positioning assembly includes two first electric telescopic blocks, the internal threads of the two first electric telescopic blocks are connected with a third threaded rod, the third threaded rod is rotatably installed inside the positioning machine, the first electric telescopic block is slidably installed inside the positioning machine, and a clamping positioning arc block is fixedly installed on one side of the first electric telescopic block.

[0016] Optionally, the insulation component includes two second electric telescopic blocks, the internal threads of the two second electric telescopic blocks are connected with second threaded rods, the second threaded rods are rotatably installed inside the positioning machine, and the second electric telescopic blocks are slidably installed inside the positioning machine.

[0017] Optionally, a magnetic insulation ring is fixedly installed on one side of the second electric telescopic block, and a magnetic block is provided on the side of the magnetic insulation ring facing the corresponding mold.

[0018] Optionally, a corresponding magnetic block is fixedly installed on the side of the corresponding mold facing the magnetic insulation ring, and the corresponding magnetic block and the magnetic block of the magnetic insulation ring are arranged in a magnetic state.

[0019] Optionally, the material transfer assembly includes a side positioning plate fixedly mounted on the top of a support base, a transfer frame is mounted on one side of the side positioning plate, a plurality of corresponding positioning plates are mounted on the surface of the transfer frame for transmission, and the same number of material placement frames are slidably mounted inside the plurality of corresponding positioning plates through an auxiliary hydraulic pump.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The arc clamping block moves outward along the arc slideway opened inside the arc clamping block through the arc spring inside the arc clamping block, so that the corresponding mold is exposed to the air. At the same time, the fan wheel block rotates in the opposite direction here. The fan blades outside the fan wheel block push the airflow to convert the heat on the corresponding mold, thereby accelerating the heat dissipation of the mold and avoiding excessive temperature difference that shortens the mold life;

[0022] 2. The first forward and reverse motor connected to the first threaded rod inside the positioning machine drives the positioning transmission frame to slide along the groove of the positioning machine to a suitable position through PLC control. When the internal processing of the corresponding mold is completed, the positioning transmission frame drives the arc-shaped positioning block to move toward the fan-shaped wheel block, so that the fan-shaped wheel block is convenient for heat dissipation of the exposed corresponding mold and is conducive to the accelerated separation of the corresponding mold and the processed bolts;

[0023] 3. During the rotation of the corresponding mold, the residual material contacts the side wall of the multi-scraping hole limiting column and falls into the frame of the multi-scraping hole limiting column. As the corresponding mold and the multi-scraping hole limiting column return to their original positions, the residual material is scraped out of the interior of the corresponding mold, thereby improving the cleaning efficiency inside the mold and preventing the residual material from affecting the subsequent processing;

[0024] 4. The columnar material, the corresponding mold, the multi-scraper-hole limiting column and the magnetic insulation ring form a relatively sealed state. The magnetic insulation ring uses the characteristics of its own insulation material to insulate the columnar material in the corresponding mold, so that it can be processed within the specified temperature and reduce heat loss. When the corresponding mold completes the warm-up work and is in a heat dissipation state, the magnetic insulation ring rotates in the opposite direction with the third threaded rod to leave the corresponding magnetic block, so that the corresponding mold is in a ventilated state, so that it is easy to accelerate the transfer of heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the multi-station warming and piercing machine of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the mold corresponding to the present invention;

[0027] Figure 3 The present invention Figure 2 Enlarged view of the middle A area;

[0028] Figure 4 It is a structural schematic diagram of the transmission frame of the present invention;

[0029] Figure 5 The present invention Figure 4 Enlarged view of the middle B area;

[0030] Figure 6 It is a structural schematic diagram of the positioning machine of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the arc-shaped positioning block of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the arc-shaped clamping block of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of the tilting rod of the present invention;

[0034] Fig.10 It is a structural schematic diagram of a circular sliding cavity block of the present invention;

[0035] Fig.11 The present invention Fig.10 Enlarged view of the middle C area;

[0036] Fig.12 It is a schematic diagram of the structure of the high-temperature alloy bolt of the present invention;

[0037] Fig.13 It is a schematic diagram of the structure of the external gear of the present invention;

[0038] Fig.14 It is a structural schematic diagram of the side plate of the present invention.

[0039] Figure numerals: 1. Driving assembly of the warming machine; 101. Support base; 102. Air pump push rod; 103. Positioning machine; 104. First threaded rod; 105. Second threaded rod; 106. Third threaded rod; 107. Side plate; 2. Material transmission assembly; 201. Side positioning plate; 202. Transmission rack; 203. Corresponding positioning plate; 204. Material placement rack; 3. Positioning assembly; 301. First electric telescopic block; 302. Clamping and positioning arc block; 4. Insulation assembly; 401. Second electric telescopic block; 402. Magnetic suction type Insulation ring; 5. Corresponding shaping components; 501. Fan-shaped wheel block; 502. Arc-shaped positioning block; 503. Corresponding mold; 504. Cavity positioning block; 505. Corresponding magnetic suction block; 506. Card-type transmission frame; 507. Hydraulic telescopic rod; 508. Current-type internal heating plate; 509. External gear; 510. Spring; 511. Arc-shaped clamping block; 512. Arc-shaped clamping block; 513. Circular sliding cavity block; 514. Telescopic rod; 515. Multi-scraping hole limiting column; 516. Tilt rod; 517. Articulated plate; 518. Arc-shaped pressure block. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] like Figure 1-Figure 10As shown, an internally heated multi-station warming machine proposed by the present invention includes a warming machine driving component 1, the warming machine driving component 1 includes a supporting base 101, one side of the supporting base 101 is fixedly connected with an air pump push rod 102, the air pump push rod 102 is slidably installed with a positioning machine 103 through a hydraulic pump, one side of the warming machine driving component 1 is installed with a material transmission component 2, one side of the warming machine driving component 1 is respectively installed with a positioning component 3, a heat preservation component 4 and a corresponding shaping component 5, the warming machine driving component 1 also includes a first threaded rod 104, the first threaded rod 104 is rotatably installed inside the positioning machine 103, and the positioning transmission frame 506 is slidably installed on the first threaded rod 104 through the threaded guide of the first threaded rod 104. On the positioning machine 103, the positioning type transmission frame 506 can only slide in the groove of the positioning machine 103, so the first threaded rod 104 uses its own thread to guide the positioning type transmission frame 506 to slide, and the first forward and reverse motor connected to the first threaded rod 104 inside the positioning machine 103 drives the positioning type transmission frame 506 to slide along the groove of the positioning machine 103 to a suitable position through PLC control. When the internal processing of the corresponding mold 503 is completed, the positioning type transmission frame 506 drives the arc-shaped positioning block 502 to move toward the fan-shaped wheel block 501, so that the fan-shaped wheel block 501 is convenient for dissipating heat to the exposed corresponding mold 503, and is conducive to accelerating the separation of the corresponding mold 503 from the processed bolts.

[0042] like Figure 1-Figure 2 As shown, the material transmission component 2 includes a side positioning plate 201 fixedly installed on the top of the support base 101, a transmission frame 202 is installed on one side of the side positioning plate 201, and a plurality of corresponding positioning plates 203 are installed on the surface of the transmission frame 202 for transmission. The same number of material placement frames 204 are slidably installed inside the plurality of corresponding positioning plates 203 through an auxiliary hydraulic pump. The staff uses the material placement frame 204 to install the columnar material, and controls the transmission frame 202 for transmission through the PLC until the center of the columnar material is on the same horizontal line as the center of the corresponding mold 503. An auxiliary hydraulic pump is fixedly installed inside the corresponding positioning plate 203, and the auxiliary hydraulic pump pushes the material placement frame 204 to be inserted into the arc-shaped positioning block 502 for extrusion molding.

[0043] like Figure 1As shown, the positioning assembly 3 includes two first electric telescopic blocks 301, the internal threads of the two first electric telescopic blocks 301 are connected with the third threaded rod 106, the third threaded rod 106 is rotatably installed inside the positioning machine 103, the first electric telescopic block 301 is slidably installed inside the positioning machine 103, and a clamping and positioning arc block 302 is fixedly installed on one side of the first electric telescopic block 301. When the material placement frame 204 with the columnar material is first inserted into the center of the clamping and positioning arc block 302, the first electric telescopic block 301 drives the two clamping and positioning arc blocks 302 to fit together with the columnar material. The material surface is in full contact. When the columnar material moves toward the corresponding mold 503 along with the material placement rack 204, the third forward and reverse motor connected to the third threaded rod 106 inside the positioning machine 103 drives the first electric telescopic block 301 to slide along the groove of the positioning machine 103 through PLC control. The first electric telescopic block 301 follows the columnar material and clamps it stably, so that the columnar material is positioned by the two clamping and positioning arc blocks 302 during the transmission process and when it is extruded in the corresponding mold 503 to reduce vibration, thereby improving the stability of the columnar material during extrusion molding.

[0044] like Figure 1As shown, the insulation component 4 includes two second electric telescopic blocks 401, the internal threads of the two second electric telescopic blocks 401 are connected with the second threaded rod 105, the second threaded rod 105 is rotatably installed in the positioning machine 103, the second electric telescopic block 401 is slidably installed in the positioning machine 103, a magnetic insulation ring 402 is fixedly installed on one side of the second electric telescopic block 401, a magnetic block is arranged on the side of the magnetic insulation ring 402 facing the corresponding mold 503, a corresponding magnetic block 505 is fixedly installed on the side of the corresponding mold 503 facing the magnetic insulation ring 402, the corresponding magnetic block 505 and the magnetic block of the magnetic insulation ring 402 are arranged in a magnetic state, the second electric telescopic block 401 drives the two magnetic insulation rings 402 to fit together and wrap the columnar material, and moves the columnar material toward the corresponding mold 503 as the material placement rack 204 moves. During the movement, the second forward and reverse motor connected to the second threaded rod 105 inside the positioning machine 103 drives the magnetic insulation ring 402 to follow the columnar material toward the corresponding mold 503 through PLC control, and the magnetic block of the magnetic insulation ring 402 fits with the corresponding magnetic block 505, and the columnar material, the corresponding mold 503, the multi-scraping hole limit column 515 and the magnetic insulation ring 402 form a relatively sealed state. The magnetic insulation ring 402 uses the characteristics of its own insulation material to insulate the columnar material in the corresponding mold 503, so that it can be processed within the specified temperature and reduce heat loss. When the corresponding mold 503 completes the warm-up work and is in the heat dissipation state, the magnetic insulation ring 402 rotates in the opposite direction with the third threaded rod 106 to leave the corresponding magnetic block 505, so that the corresponding mold 503 is in a ventilated state, so that it is easy to accelerate the transfer of heat.

[0045] In this embodiment, Figure 1-Figure 14 The corresponding shaping component 5 includes an external gear 509 rotatably mounted on the positioning machine 103 through the side plate 107 of the positioning machine 103, a sector wheel block 501 is fixedly mounted on one side of the external gear 509, a circular sliding cavity block 513 is rotatably connected to one side of the side plate 107 of the positioning machine 103, a plurality of hinge plates 517 are hingedly connected to the outer side of the circular sliding cavity block 513 through the receiving groove provided by the circular sliding cavity block 513, and a spring 510 is fixedly mounted between the hinge plates 517 and the receiving groove, an arc-shaped pressing block 518 having the same number as the hinge plates 517 is fixedly mounted on the side of the sector wheel block 501 facing the hinge plate 517, a main forward and reverse motor is fixedly mounted on the side plate 107 of the positioning machine 103, the main forward and reverse motor drives the connected gear to rotate, the gear is meshed with the external gear 509, and then the external gear 509 drives the sector wheel block 501 to rotate along the side plate 107 of the positioning machine 103;

[0046] The inside of the circular sliding cavity block 513 is slidably connected with the same number of telescopic rods 514 through multiple arc grooves, and the same number of arc positioning blocks 502 are fixedly installed on one side of the multiple telescopic rods 514. The inside of the arc positioning block 502 is fixedly installed with an electric current internal heating plate 508, and the corresponding mold 503 is installed on one side of the electric current internal heating plate 508 through a tilting rod 516. The same number of arc clamping blocks 512 are fixedly installed on the outside of four arc positioning blocks 502, and an arc clamping block 511 is slidably connected between every two arc clamping blocks 512. A hydraulic telescopic rod 507 is fixedly installed on the side of the arc clamping block 511 away from the arc positioning block 502, and a card-type transmission frame 5 is fixedly installed on one side of the hydraulic telescopic rod 507. 06. When the corresponding mold 503 needs to be heated, the fan-shaped wheel block 501 drives the arc-shaped pressing block 518 to move toward the hinge plate 517. The hinge plate 517 is limited by the storage groove and drives the circular sliding cavity block 513 to rotate together with the fan-shaped wheel block 501. The telescopic rod 514 drives the arc-shaped positioning block 502 to converge inward along the arc groove on the circular sliding cavity block 513 and fits the outer side of the corresponding mold 503, and the hydraulic telescopic rod 507 drives the arc-shaped clamping block 511 to move toward one side of the corresponding mold 503. Under the cooperation of the hydraulic telescopic rod 507 and the telescopic rod 514, the corresponding mold 503 is fit and clamped. Since the force of squeezing the columnar material and the corresponding mold 503 is large, the combined force of the hydraulic telescopic rod 507 and the telescopic rod 514 supports the corresponding mold 503. Under the support, the stability of the corresponding mold 503 during processing can be improved, and the electric energy causes the internal temperature of the corresponding mold 503 to rise, and the columnar material is fully heated to the specified temperature. The temperature data is detected according to the temperature detection sensor installed inside the corresponding mold 503. In the process of the material placement rack 204 moving toward the corresponding mold 503, the arc-shaped positioning block 502 is first attached to the outer side of the corresponding mold 503, and the current-type internal heating plate 508 fully heats the corresponding mold 503 until it meets the specified requirements. With the completion of the processing steps, when natural heat dissipation is required, the hydraulic telescopic rod 507 moves to the side away from the corresponding mold 503, and the arc-shaped clamping block 512 is clamped along the arc spring in the arc-shaped clamping block 511. The arc-shaped slideway opened inside the block 511 moves outward, and the telescopic rod 514 is affected by the arc-shaped groove of the circular slide cavity block 513, so that all the arc-shaped positioning blocks 502 follow the telescopic rod 514 and rotate along the arc-shaped groove away from the corresponding mold 503. It is explained here that when the arc-shaped positioning block 502 is attached to the corresponding mold 503, the arc spring is in a compressed state, and the arc spring is fixedly installed between the arc-shaped slideway and the arc-shaped clamping block 512. The corresponding mold 503 is exposed to the air. At the same time, the fan-shaped wheel block 501 rotates in the opposite direction here, and the fan-shaped wheel block 501 squeezes the hinge plate 517 through the arc-shaped pressing block 518. The hinge plate 517 is stored in the storage groove through the spring 510, and the circular slide cavity block 513 does not rotate with the fan-shaped wheel block 501.The fan blades outside the fan wheel block 501 push the airflow to convert the heat on the corresponding mold 503. Compared with water cooling, the heat dissipation efficiency of air cooling is slower, and the fan wheel block 501 accelerates the push of the airflow here, which has a much smaller impact on the temperature of the surface of the corresponding mold 503 than water cooling, thereby accelerating the heat dissipation of the mold and avoiding excessive temperature difference that shortens the life of the mold.

[0047] When the multiple arc-shaped positioning blocks 502 are in a fitted state, the multiple arc-shaped positioning blocks 502 and the corresponding mold 503 are set in a relatively sealed state. The arc-shaped positioning blocks 502 fit the current-type internal heating plate 508 with the cavity positioning blocks 504 to reduce heat loss. At the same time, when the arc-shaped positioning blocks 502 drive the current-type internal heating plate 508 away from the cavity positioning blocks 504, the wind force generated by the fan-shaped wheel block 501 can accelerate the circulation of air on the surface of the corresponding mold 503, increase the surface temperature of the corresponding mold 503 to restore to its original state, and the outer side of the corresponding mold 503 is fixedly installed with the same number of cavity positioning blocks 504 as the current-type internal heating plate 508, and the current-type internal heating plate 508 and the cavity positioning blocks 5 04 is adapted, the tilting rod 516 is hinged between the current-type internal heating plate 508 and the cavity positioning block 504, the arc-shaped positioning block 502, the current-type internal heating plate 508 and the corresponding mold 503 are always in a connected state, when the arc-shaped positioning block 502 is away from the cavity positioning block 504, the tilting rod 516 is deflected along the inner cavity of the current-type internal heating plate 508 and the connection with the cavity positioning block 504, the tilting rod 516 plays a positioning role, when the current-type internal heating plate 508 is inserted into the cavity positioning block 504, the tilting rod 516 is received in the inner cavity of the current-type internal heating plate 508, to avoid interference with the current-type internal heating plate 508, and the tilting rod 516 is made of high-temperature resistant material.

[0048] like Fig.12 As shown, the processed product is a bolt, and the material standard is Q / S10-0301-2004, and the heat treatment standard is HBW346-450. In this process, the processing condition of the bolt in the chamber is warm upsetting. Since the thread of the bolt needs to be formed by die pressing, due to the influence of temperature, some residual materials may be burned off due to high temperature and fall into the corresponding mold 503;

[0049] It is noted here that after the warm heading process of the high-temperature alloy bolts used for samples, the general inspection items are appearance inspection and dimensional inspection, and the performance test items are carried out in accordance with the relevant standards.

[0050] Appearance inspection: The thread surface should be visually smooth and free of burrs, irregular threads, buckles, folds, bumps and other mechanical damage. Oxidation color is not allowed on the surface.

[0051] Dimension inspection: The thread should be inspected with a thread gauge (model MJ8-4h6T·Z), and the basic appearance dimensions of the product should be inspected with a micrometer of 0-25mm and a profile measuring instrument. The product thread diameter should be inspected with a three-pin, the thread outer diameter should be inspected with a micrometer, the tooth bottom R should be inspected with a profile measuring instrument, and a thread ring gauge should be used for comprehensive inspection. The dimensional tolerance should be in accordance with HB5800-1999.

[0052] Metallographic inspection of products: According to technical specification HB20230-2014: Check low-magnification streamlines, microstructures, and thread folds and creases.

[0053] Performance testing for product verification: the test pieces shall be sent to the laboratory for testing according to the performance test procedures in the technical route, and the room temperature destructive tensile test shall be no less than 35.54KN according to HB20230-2014; the bolts shall be heated to 425℃±3℃ according to GJHB20230-2014, and kept at this temperature for 20 minutes for high temperature destructive tensile force of no less than 33.12KN; the hardness shall be within the range of 36HRC-46.5HRC according to HB20230-2014; the tension-tension fatigue test shall be carried out according to HB20230-2014, with a high load of 26.60KN and a low load of 2.66KN. The bolts shall be able to withstand an average of 65,000 cycles. The partial values ​​exceeding 130,000 times shall not be included in the calculation of the average value, and the fatigue life of a single piece shall not be less than 45,000 times; the double shear test shall not be less than 77.16KN according to HB20230-2014.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0055] "Comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0056] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An internally heated multi-station hot-stitching machine, comprising a hot-stitching machine drive assembly (1), the hot-stitching machine drive assembly (1) comprising a support base (101), one side of the support base (101) being fixedly connected to an air pump push rod (102), the air pump push rod (102) being slidably mounted with a positioning machine (103) via a hydraulic pump, one side of the hot-stitching machine drive assembly (1) being mounted with a material transmission assembly (2), characterized in that: A positioning component (3), a heat preservation component (4) and a corresponding shaping component (5) are respectively installed on one side of the heat-stitching machine driving component (1); The corresponding shaping component (5) comprises an external gear (509) rotatably mounted on the positioning platform (103) via a side plate (107) of the positioning platform (103); a sector wheel block (501) is fixedly mounted on one side of the external gear (509); a circular sliding cavity block (513) is rotatably connected to one side of the side plate (107) of the positioning platform (103); a plurality of hinge plates (517) are hingedly connected on the outer side of the circular sliding cavity block (513) via a receiving groove provided in the circular sliding cavity block (513); a spring (510) is fixedly mounted between the hinge plate (517) and the receiving groove; and an arc-shaped pressing block (518) whose number is the same as that of the hinge plates (517) is fixedly mounted on the side of the sector wheel block (501) facing the hinge plate (517); The inside of the circular sliding cavity block (513) is slidably connected with the same number of telescopic rods (514) through a plurality of arc grooves, and the same number of arc positioning blocks (502) are fixedly installed on one side of the plurality of telescopic rods (514), and the inside of the arc positioning block (502) is fixedly installed with an electric current internal heating plate (508), and one side of the electric current internal heating plate (508) is installed with a corresponding mold (503) through a tilting rod (516), wherein the outsides of four of the arc positioning blocks (502) are fixedly installed with the same number of arc clamping blocks (512), and an arc clamping block (511) is slidably connected between every two of the arc clamping blocks (512), and a hydraulic telescopic rod (507) is fixedly installed on the side of the arc clamping block (511) away from the arc positioning block (502), and a clamping type transmission frame (506) is fixedly installed on one side of the hydraulic telescopic rod (507).

2. The internally heated multi-station warm-heading machine according to claim 1, characterized in that: When the plurality of arc-shaped positioning blocks (502) are in a fitted state, the plurality of arc-shaped positioning blocks (502) and the corresponding mold (503) are arranged in a relatively sealed state.

3. The internally heated multi-station warm-heading machine according to claim 2, characterized in that: The outer side of the corresponding mold (503) is fixedly mounted with cavity positioning blocks (504) whose number matches the current-type internal heating plates (508), and the current-type internal heating plates (508) are adapted to the cavity positioning blocks (504), and the tilting rod (516) is hinged between the current-type internal heating plates (508) and the cavity positioning blocks (504).

4. The internally heated multi-station warm-heading machine according to claim 3, characterized in that: The warming machine drive assembly (1) further comprises a first threaded rod (104), the first threaded rod (104) being rotatably mounted inside the positioning machine (103), and the positioning transmission frame (506) being slidably mounted on the positioning machine (103) through the threaded guidance of the first threaded rod (104).

5. The internally heated multi-station warm-heading machine according to claim 4, characterized in that: A multi-scraping hole type limiting column (515) is rotatably mounted on one side of the circular sliding cavity block (513); the multi-scraping hole type limiting column (515) is fixedly mounted on a side plate (107) of the positioning machine (103); and the multi-scraping hole type limiting column (515) is slidably mounted inside the corresponding mold (503).

6. The internally heated multi-station warm-heading machine according to claim 5, characterized in that: The positioning assembly (3) comprises two first electric telescopic blocks (301), the internal threads of the two first electric telescopic blocks (301) being connected to a third threaded rod (106), the third threaded rod (106) being rotatably mounted inside the positioning machine (103), the first electric telescopic block (301) being slidably mounted inside the positioning machine (103), and a clamping positioning arc block (302) being fixedly mounted on one side of the first electric telescopic block (301).

7. The internally heated multi-station warm-heading machine according to claim 1, characterized in that: The heat preservation component (4) comprises two second electric telescopic blocks (401), the internal threads of the two second electric telescopic blocks (401) being connected to second threaded rods (105), the second threaded rods (105) being rotatably mounted inside the positioning machine (103), and the second electric telescopic blocks (401) being slidably mounted inside the positioning machine (103).

8. The internally heated multi-station warm-heading machine according to claim 7, characterized in that: A magnetic insulation ring (402) is fixedly mounted on one side of the second electric telescopic block (401), and a magnetic block is provided on the side of the magnetic insulation ring (402) facing the corresponding mold (503).

9. The internally heated multi-station warm-heading machine according to claim 8, characterized in that: A corresponding magnetic block (505) is fixedly mounted on one side of the corresponding mold (503) facing the magnetic insulation ring (402), and the corresponding magnetic block (505) and the magnetic block of the magnetic insulation ring (402) are arranged in a magnetically attracted state.

10. The internally heated multi-station warm-heading machine according to claim 1, characterized in that: The material transmission assembly (2) comprises a side positioning plate (201) fixedly mounted on the top of a support base (101), a transmission frame (202) being mounted on one side of the side positioning plate (201), a plurality of corresponding positioning plates (203) being mounted on the surface of the transmission frame (202), and the same number of material placement frames (204) being slidably mounted inside the plurality of corresponding positioning plates (203) via an auxiliary hydraulic pump.

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