Forging and pressing equipment for gear forging line

Abstract

The utility model relates to forging and pressing equipment for a gear forging line. The forging and pressing equipment comprises a before-forging and pressing conveying belt, a before-upsetting mechanical arm, a forging press for upsetting, a before-preforming mechanical arm, a forging press for preforming, a before-finish-forging mechanical arm, a forging press for finish-forging, a after-finish-forging mechanical arm and a after-forging and pressing conveying belt. The before-forging-and-pressing conveying belt is used for inputting short cylindrical blanks, the before-upsetting mechanical arm is used for transferring the short cylindrical blanks on the before-forging-and-pressing conveying belt into the forging press for upsetting for upsetting, and the before-preforming mechanical arm is used for transferring the blanks subjected to upsetting into the forging press for preforming for preforming. The pre-finish-forging mechanical arm is used for transferring a preformed blank to the forging press for finish forging, the post-finish-forging mechanical arm is used for transferring a product subjected to finish forging forming to the post-forging conveying belt, and the post-forging conveying belt is used for outputting the product; the device has the advantages that the mechanical arms are arranged among the working procedures to replace part of manpower, so that the labor intensity is reduced, and the harm of occupational diseases such as high temperature, noise and dust is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission component manufacturing field especially, a kind of forging press equipment for gear forging line. BACKGROUND

[0002] With the in-depth of industrial transfer and the development of China's high-end equipment manufacturing industry, part of domestic forging enterprises absorbs and introduces technology, strengthens research and development cooperation and technical accumulation, and makes great progress in forging technology process, forging equipment level and forging capacity.

[0003] But the current gear forging production line still has the following defects:

[0004] 1.Gear forging production generally includes blank preparation (adopting sawing machine to cut long cylindrical blank into short cylindrical), blank heating (heating temperature is usually between 1000 ℃-1250 ℃), forging, cooling five processes, most of forging production line is still in artificial production stage, only part of equipment of production line enters automatic production stage, in artificial forging production process, material handling between equipment is completed by artificial, this operation mode is more flexible, but worker's labor intensity is great, simultaneously faces high temperature, noise, dust and other occupational hazards factors;

[0005] 2.Forging includes upsetting, preforming (adding or deleting according to process requirement), final forging forming several steps, three processes need to be completed in three stations, temperature maintenance is very critical factor, if blank appears obvious temperature drop in station transfer process, needs to be heated by reheat furnace, so additional heating furnace and holding furnace are configured near forging equipment;In addition, for different material forging, forging pressure is also different, currently fixed mode oil pump is adopted to push hydraulic cylinder to carry out forging, and upper limit of forging pressure is difficult to change, for a small amount of high-pressure forging requirement order, it cannot be satisfied in time.

[0006] Based on this, the case is proposed. CONTENT OF UTILITY MODEL

[0007] The utility model aims at providing a kind of forging press equipment for gear forging line, to solve the above-mentioned defects.

[0008] To achieve the above object, the technical scheme of the utility model is as follows:

[0009] A kind of forging press equipment for gear forging line, including forging before conveying belt, upsetting front mechanical arm, upsetting with forging press, preforming front mechanical arm, preforming with forging press, final forging front mechanical arm, final forging with forging press, final forging rear mechanical arm and forging after conveying belt;

[0010] The forging pre-conveying belt is used for inputting short cylindrical blank for forging, the mechanical arm before upsetting is used for transferring the short cylindrical blank on the forging pre-conveying belt to the upsetting forging press for upsetting, the mechanical arm before pre-forming is used for transferring the blank after upsetting to the pre-forming forging press for pre-forming, the mechanical arm before finish forging is used for transferring the blank after pre-forming to the finish forging press, the mechanical arm after finish forging is used for transferring the gear product after finish forming to the forging post-conveying belt, and the forging post-conveying belt is used for outputting the gear product.

[0011] Further, the upsetting forging press, the pre-forming forging press and the finish forging press each comprise a rack, a forging hydraulic cylinder mounted on the rack, a moving die mounted on the piston rod end of the forging hydraulic cylinder, and a fixed die mounted on the rack and located directly below the moving die.

[0012] The base and the side wall of the fixed die are embedded with heating modules, and the rack is provided with a heat preservation plate outside the periphery of the fixed die.

[0013] Further, the heating module is an electric resistance heating module.

[0014] Further, the forging equipment comprises a heat preservation chamber, the front end of the heat preservation chamber in the longitudinal direction is provided with an input port only for the forging pre-conveying belt, the rear end of the heat preservation chamber in the longitudinal direction is provided with an output port only for the forging post-conveying belt, and the outer periphery of the heat preservation chamber outside the forging pre-conveying belt is provided with a heat preservation fence.

[0015] Further, the forging equipment comprises a hydraulic control system, which comprises a total oil tank, an upsetting oil pump, a pre-forming oil pump, a finish forging oil pump, an upsetting filter, a pre-forming filter, a finish forging filter, an upsetting electromagnetic reversing valve, a pre-forming electromagnetic reversing valve and a finish forging electromagnetic reversing valve.

[0016] The forging hydraulic cylinder is defined as an upsetting hydraulic cylinder, a pre-forming hydraulic cylinder and a finish forging hydraulic cylinder according to the upsetting, pre-forming and finish forging processes respectively.

[0017] The total oil tank, the upsetting oil pump, the upsetting filter, the upsetting electromagnetic reversing valve and the upsetting hydraulic cylinder are connected through an oil pipe A.

[0018] The total oil tank, the pre-forming oil pump, the pre-forming filter, the pre-forming electromagnetic reversing valve and the pre-forming hydraulic cylinder are connected through an oil pipe B.

[0019] The total oil tank is connected with the oil pump for finish forging, the oil pump for finish forging is connected with the filter for finish forging, the filter for finish forging is connected with the electromagnetic reversing valve for finish forging, the electromagnetic reversing valve for finish forging is connected with the hydraulic cylinder for finish forging through the oil pipe C;

[0020] The oil pipe A between the upsetting electromagnetic reversing valve and the upsetting hydraulic cylinder comprises the oil pipe 1A connected with the upper inlet of the hydraulic cylinder and the oil pipe 2A connected with the lower inlet of the hydraulic cylinder; the oil pipe B between the preforming electromagnetic reversing valve and the preforming hydraulic cylinder comprises the oil pipe 1B connected with the upper inlet of the hydraulic cylinder and the oil pipe 2B connected with the lower inlet of the hydraulic cylinder; the oil pipe C between the finish forging electromagnetic reversing valve and the finish forging hydraulic cylinder comprises the oil pipe 1C connected with the upper inlet of the hydraulic cylinder and the oil pipe 2C connected with the lower inlet of the hydraulic cylinder.

[0021] Further, the oil pipe 1A and the oil pipe 1B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve AB1; the oil pipe 2A and the oil pipe 2B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve AB2; the oil pipe 1C and the oil pipe 1B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve CB1; the oil pipe 2C and the oil pipe 2B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve CB2; the connection point of the communication pipe and the oil pipe B is arranged on the side close to the preforming electromagnetic reversing valve; the oil pipe 1B and the oil pipe 2B are both provided with an electric butterfly valve BB, and the electric butterfly valve BB is arranged on the side close to the preforming hydraulic cylinder.

[0022] Further, the oil pipe A, the oil pipe B and the oil pipe C are all provided with overflow valves.

[0023] The utility model discloses the advantages are:

[0024] 1. By setting up the mechanical arm between each working procedure, to replace part of artificial, reduce the labor intensity, reduce the high temperature, the noise, the dust and so on professional disease harm;

[0025] 2. By setting up 3 forging presses, correspond to upsetting, preforming, finish forging forming procedure respectively, and increase heating module in the forging equipment, realize the heating of forging simultaneously, reduce the heat loss of blank in the mould, ensure the smooth progress of forging process and the quality and performance of final product, and the hydraulic system of 3 forging presses is independent, and is combined through the communication pipe and electric butterfly valve simultaneously, allows sharing hydraulic pressure under certain conditions (for example, the pressure is not enough when upsetting or finish forging), increases the flexibility of the hydraulic system, in addition, the arrangement of multiple overflow valves also ensures the safety of the system, prevents the damage caused by overpressure. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the plane arrangement schematic diagram of gear forging production line in the embodiment;

[0027] Figure 2 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0028] Figure 3 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 2 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0029] Figure 4 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 2 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0030] Figure 5 A schematic view of the configuration of the forging equipment in the embodiment;

[0031] Figure 6 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 5 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0032] Figure 7 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 5 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0033] Figure 8 A schematic view of the configuration of the cooling equipment in the embodiment;

[0034] Figure 9 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 8 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0035] Figure 10 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 8 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0036] Figure 11 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 8 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0037] Figure 12 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 8 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0038] Figure 13 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment; Figure 8 A schematic view of the configuration of the pre-furnace conveying belt equipment in the embodiment;

[0039] Explanation of reference numerals

[0040] 1. Sawing machine;

[0041] 2. Pre-furnace conveying belt equipment; 201. Fixed seat one; 202. Fixed seat two; 203. Support one; 204. Support two; 205. Pre-heating conveying belt; 206. Infrared heating module; 207. Pre-heating hydraulic cylinder; 208. Heat preservation fence;

[0042] 3. Pre-furnace mechanical arm; 4. Heating furnace; 5. Pre-forging mechanical arm;

[0043] 6. Forging equipment; 601. Conveyor belt before forging; 602. Robotic arm before upsetting; 603. Forging press for upsetting; 604. Robotic arm before preforming; 605. Forging press for preforming; 606. Robotic arm before final forging; 607. Forging press for final forging; 608. Robotic arm after final forging; 609. Conveyor belt after forging; 610. Hydraulic cylinder for upsetting; 611. Hydraulic cylinder for preforming; 612. Hydraulic cylinder for final forging; 613. Frame; 614. Moving die; 615. 616. Fixed mold; 617. Resistance heating module; 618. Insulation board; 619. Insulation chamber; 620. Insulation enclosure; 621. Main oil tank; 622. Upsetting oil pump; 623. Preforming oil pump; 624. Final forging oil pump; 625. Upsetting filter; 626. Preforming filter; 627. Final forging filter; 628. Upsetting solenoid directional valve; 629. Preforming solenoid directional valve; 630. Relief valve;

[0044] 7. Forged robotic arm;

[0045] 8. Cooling equipment; 801. Horizontal linear conveyor belt; 802. Cooling fan; 803. Suction duct; 804. Drying fan; 805. Liquid receiving tank; 806. Cooling tank; 807. Zigzag conveyor belt; 808. Brush; 809. Temperature sensor; 810. Drain outlet; 811. Inlet.

[0046] 9. Raw materials. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the embodiments. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" etc. indicated by the accompanying drawings are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0048] This embodiment proposes a gear forging production line, such as Figure 1 As shown, the forging process includes, in sequence, a sawing machine 1, a conveyor belt device before entering the furnace 2, a robotic arm before entering the furnace 3, a heating furnace 4, a robotic arm before forging 5, a forging pressing device 6, a robotic arm after forging 7, and a cooling device 8.

[0049] The saw 1 is used to cut long cylindrical billets into short cylindrical billets. The short cylindrical billets output by the saw 1 are at room temperature. No robotic arm needs to be installed here. The output short cylindrical billets are sorted by hand and placed one by one into the conveyor belt equipment 2 before entering the furnace.

[0050] As shown in Figure 2 The pre-furnace conveying belt device 2 includes a support 203, a support 204, and a preheating conveying belt 205, the support 203 and the support 204 are fixed on both ends of the preheating conveying belt 205, a heating module 206 is arranged above the preheating conveying belt 205, and the heating module 206 is used for preheating the short cylindrical blank on the preheating conveying belt 205. Preheating of the blank can reduce the heating time in the heating furnace 4, and for some materials, rapid heating can cause too large temperature gradient between the surface and the core, which is easy to cause cracking, by preheating, the temperature difference between the blank and the high-temperature furnace can be reduced, so that the blank can be heated more uniformly after entering the high-temperature furnace, thereby reducing the thermal stress caused by the temperature difference between the inside and the outside.

[0051] But preheating also needs to ensure the uniformity of the blank heating, Figure 2 The heating module 206 is arranged above the conveying belt, if the blank is not turned over, it will cause uneven preheating, and the present application improves the structure. The preheating heating module 206 adopts an infrared heating module, and the infrared heating module 206 directly heats the blank using infrared radiation. Of course, electromagnetic induction heating, resistance heating, nozzle type flame heating, etc. can also be used. The improvement structure for uniform preheating is made for the infrared heating module 206, and the specific description is as follows.

[0052] The pre-furnace conveying belt device 2 further includes a fixed seat 201, a fixed seat 202, and a preheating hydraulic cylinder 207, the fixed seat 201 is located below the support 203, and the support 203 is hinged to the fixed seat 201, the preheating hydraulic cylinder 207 is located below the support 204, the fixed seat 202 is located below the preheating hydraulic cylinder 207, the piston rod end of the preheating hydraulic cylinder 207 is hinged to the support 204, and the cylinder body end of the preheating hydraulic cylinder 207 is hinged to the fixed seat 202. The preheating conveying belt 205 is a conveying belt with a transverse partition plate, the preheating conveying belt 205 is provided with a heat preservation fence 208, and the belt surface, the transverse partition plate and the inner wall of the heat preservation fence 208 are all covered with a reflective layer. As Figure 3 and Figure 4As shown, by lifting the preheating hydraulic cylinder 207, the preheating conveyor belt 205 can be tilted upward or downward, so that the short cylindrical billets on the preheating conveyor belt 205 rotate back and forth between two adjacent cross partitions, thereby achieving uniform heating. The design of the heat preservation fence 208 reduces the loss of radiant heat, and the design of the reflective layer further improves the utilization rate of radiant heat. The design of the cross partition allows only one short cylindrical billet to be placed between two adjacent cross partitions during use, and the short cylindrical billet can only roll back and forth within a small distance between the two cross partitions. In addition, the lifting frequency of the preheating hydraulic cylinder 207 can be adjusted according to actual needs to avoid excessively fast or slow lifting frequency.

[0053] The pre-furnace mechanical arm 3 is used to transfer the short cylindrical billets on the output side of the pre-furnace conveyor belt device 2 to the input end of the heating furnace 4. The heating furnace 4 is used to heat the short cylindrical billets sent in to the required temperature for forging and pressing. The heating furnace 4 can adopt the structure of the heating furnace described in patent 201821376496.2, which facilitates the entry and exit of the billets and can cooperate well with the mechanical arm. The pre-forging mechanical arm 5 is used to transfer the heated short cylindrical billets to the input end of the forging equipment 6.

[0054] As shown in Figure 5 The forging equipment 6 includes a pre-forging conveyor belt 601, a pre-upsetting mechanical arm 602, an upsetting forging press 603, a pre-forming mechanical arm 604, a pre-forming forging press 605, a final forging mechanical arm 606, a final forging forging press 607, a post-forging mechanical arm 608, and a post-forging conveyor belt 609. The pre-forging mechanical arm 5 is used to transfer the heated short cylindrical billets to the pre-forging conveyor belt 601, the pre-upsetting mechanical arm 602 is used to transfer the short cylindrical billets on the pre-forging conveyor belt 601 to the upsetting forging press 603 for upsetting, the pre-forming mechanical arm 604 is used to transfer the upset billets to the pre-forming forging press 605 for pre-forming, the final forging mechanical arm 606 is used to transfer the pre-formed billets to the final forging forging press 607, the post-forging mechanical arm 608 is used to transfer the final forged gear products to the post-forging conveyor belt 609, and the post-forging mechanical arm 7 is used to transfer the gear products on the post-forging conveyor belt 609 to the input end of the cooling equipment 8.

[0055] The upsetting forging press 603, the pre-forming forging press 605, and the final forging forging press 607 are basically the same in structure, except that the die design and pressure setting are different for different processes. As shown in Figure 6As shown, the upsetting forging press 603, the preforming forging press 605, and the finish forging press 607 each include a frame 613, a forging hydraulic cylinder mounted on the frame 613, a moving die 614 mounted on the end of the piston rod of the forging hydraulic cylinder, and a stationary die 615 mounted on the frame 613 and located directly below the moving die 614. In this embodiment, the base and the sidewall of the stationary die 615 are embedded with resistance heating modules 616, and the frame 613 is provided with heat insulation boards 617 around the periphery of the stationary die 615, so that the forging can be performed while heating and insulation, reducing the heat loss of the blank in the die, and ensuring the smooth progress of the forging process and the quality and performance of the final product. Further, the forging equipment 6 includes an insulation chamber 618, the longitudinal front end of which is provided with an input port for the entry of the pre-forging conveying belt 601 only, and the longitudinal rear end of which is provided with an output port for the entry of the post-forging conveying belt 609 only, and the remaining devices of the forging equipment are arranged in the insulation chamber 618. The periphery of the part of the pre-forging conveying belt 601 outside the insulation chamber 618 is provided with an insulation fence 619. The design of the insulation chamber 618 and the insulation fence 619 further reduces the heat loss of the heated blank. Of course, a door for personnel access is also provided on one side of the insulation chamber 618.

[0056] As Figure 7As shown, the forging equipment 6 includes a hydraulic control system, which includes a total oil tank 620, a upsetting oil pump 621, a preforming oil pump 622, a finish forging oil pump 623, a upsetting filter 624, a preforming filter 625, a finish forging filter 626, a upsetting electromagnetic reversing valve 627, a preforming electromagnetic reversing valve 628, a finish forging electromagnetic reversing valve 629. The hydraulic cylinders for forging are defined as a upsetting hydraulic cylinder 610, a preforming hydraulic cylinder 611, a finish forging hydraulic cylinder 612 according to the upsetting, preforming, finish forging processes; the total oil tank 620 is connected with the upsetting oil pump 621, the upsetting oil pump 621 is connected with the upsetting filter 624, the upsetting filter 624 is connected with the upsetting electromagnetic reversing valve 627, the upsetting electromagnetic reversing valve 627 is connected with the upsetting hydraulic cylinder 610, all through the oil pipe A; the total oil tank 620 is connected with the preforming oil pump 622, the preforming oil pump 622 is connected with the preforming filter 625, the preforming filter 625 is connected with the preforming electromagnetic reversing valve 628, the preforming electromagnetic reversing valve 628 is connected with the preforming hydraulic cylinder 611, all through the oil pipe B; the total oil tank 620 is connected with the finish forging oil pump 623, the finish forging oil pump 623 is connected with the finish forging filter 626, the finish forging filter 626 is connected with the finish forging electromagnetic reversing valve 629, the finish forging electromagnetic reversing valve 629 is connected with the finish forging hydraulic cylinder 612, all through the oil pipe C. The oil pipe A between the upsetting electromagnetic reversing valve 627 and the upsetting hydraulic cylinder 610 includes the oil pipe 1A connected with the upper inlet of the hydraulic cylinder and the oil pipe 2A connected with the lower inlet of the hydraulic cylinder; the oil pipe B between the preforming electromagnetic reversing valve 628 and the preforming hydraulic cylinder 611 includes the oil pipe 1B connected with the upper inlet of the hydraulic cylinder and the oil pipe 2B connected with the lower inlet of the hydraulic cylinder; the oil pipe C between the finish forging electromagnetic reversing valve 629 and the finish forging hydraulic cylinder 612 includes the oil pipe 1C connected with the upper inlet of the hydraulic cylinder and the oil pipe 2C connected with the lower inlet of the hydraulic cylinder.

[0057] Further, the oil pipe 1A and the oil pipe 1B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve AB1; the oil pipe 2A and the oil pipe 2B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve AB2; the oil pipe 1C and the oil pipe 1B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve CB1; the oil pipe 2C and the oil pipe 2B are provided with a communication pipe, and the communication pipe is provided with an electric butterfly valve CB2; the connection point of the communication pipe and the oil pipe B is arranged on the side close to the preforming electromagnetic reversing valve 628; the oil pipe 1B and the oil pipe 2B are both provided with an electric butterfly valve BB, and the electric butterfly valve BB is arranged on the side close to the preforming hydraulic cylinder 611. The overflow valve 630 is installed on the oil pipe A, the oil pipe B and the oil pipe C.

[0058] The hydraulic control is explained using oil pipe A as an example. The upsetting oil pump 621 is pneumatic, drawing hydraulic oil from the main oil tank 620. After being filtered by the upsetting filter 624, the oil reaches the upsetting solenoid directional valve 627. The upsetting hydraulic cylinder 610 includes an upper inlet and a lower inlet for hydraulic oil. When hydraulic oil enters the upper inlet, the piston rod is pushed out, merging the moving mold 614 and the fixed mold 615. When hydraulic oil enters the lower inlet, the piston rod is retracted, separating the moving mold 614 and the fixed mold 615. The upsetting solenoid directional valve 627 controls the flow of hydraulic oil into oil pipe 1A or oil pipe 2A, thus controlling the piston movement of the piston rod. When the pressure of the upsetting oil pump 621 is insufficient, the two electric butterfly valves BB can be closed, the preforming oil pump 622 can be opened, and the opening and closing of the electric butterfly valves AB1 and AB2 can be controlled at the same time so that the hydraulic pressure generated by the preforming oil pump 622 can be shared with the upsetting hydraulic cylinder 610.

[0059] The hydraulic systems of the three forging presses are independent yet connected via connecting pipes and electric butterfly valves, allowing for hydraulic sharing under specific conditions and increasing the flexibility of the hydraulic system. In addition, the arrangement of multiple relief valves 630 ensures the safety of the system and prevents damage caused by overpressure.

[0060] like Figure 8 As shown, the cooling device 8 includes a front section, a middle section, and a rear section.

[0061] like Figure 9 and 10 As shown, the front section of the trough includes a horizontal straight conveyor belt 801 and a cooling fan 802 located above the conveyor belt. The conveyor belt has a metal mesh surface with partitions, and a suction duct 803 connected to the suction fan is provided below the conveyor belt. The cooling fan 802 air-cools the high-temperature gear products located on the horizontal straight conveyor belt 801 in the front section of the trough, and the heat generated by the air cooling (including some dust and impurities) is drawn into the suction duct 803.

[0062] like Figure 9 and Figure 13 As shown, the rear section of the tank includes a horizontal straight conveyor belt 801 and a drying fan 804 located above the conveyor belt. The conveyor belt has a metal mesh surface with partitions, and a liquid receiving tank 805 connected to a drain pipe is provided below the conveyor belt. The drying fan 804 dries the liquid-laden gear products located on the horizontal straight conveyor belt 801 at the rear end of the tank, and the liquid blown down by the fan is collected in the liquid receiving tank 805 and discharged.

[0063] like Figure 9 , Figure 11 and Figure 12As shown, the middle section of the tank comprises a plurality of straightly arranged cooling tanks 806 filled with liquid cooling medium, the temperature of the cooling medium in different cooling tanks 806 gradually decreases from the front section to the rear section of the tank, the cooling tanks 806 are provided with a zigzag conveying belt 807, the zigzag conveying belt 807 comprises a downward inclined section connected with the conveying belt in the front section or the last cooling tank 806, a horizontal straight section immersed in the cooling medium in the cooling tank 806, and an upward inclined section connected with the conveying belt in the next cooling tank 806 or the rear section of the tank; the conveying belt in the middle section of the tank is provided with a metal mesh belt surface with a partition.

[0064] The cooling device 8 reduces the dependence on manual experience and effectively prevents the product from being damaged due to rapid temperature change through the conveying system and the staged cooling mechanism, thereby ensuring the product quality. The air-cooled pre-cooling in the front section of the tank prepares for the subsequent cooling; the multi-stage cooling tanks 806 in the middle section of the tank ensure that the product can be smoothly cooled from high temperature to the required low temperature state; the air-drying treatment in the rear section of the tank ensures the dryness of the final product, which is suitable for subsequent processing or storage.

[0065] Further, as shown in the drawings, Figure 11 The cooling tank 806 is provided with a brush 808 in contact with the lower conveying belt. During the process of entering the cooling tank 806 for cooling after the forging part is discharged, the metal mesh conveying belt may stick to the oxide skin of the forging part, the stripping machine and some impurities, the brush 808 in contact with the lower conveying belt is provided, and the brush 808 brushes the belt surface during the movement of the conveying belt, so that the conveying belt is kept clean and the maintenance time is prolonged.

[0066] After the gear product is cooled and dried, it can be manually taken out and transported to the next processing workshop for turning, milling, polishing and oiling processes.

[0067] The above embodiments are only used to explain the concept of the utility model, and are not limited to the protection of the utility model, and any non-essential changes to the utility model using the concept shall fall within the protection scope of the utility model.

Claims

1. A forging press for a gear forging line, characterized by, The forging equipment comprises a forging pre-conveying belt, a upsetting pre-mechanical arm, a upsetting forging press, a preforming pre-mechanical arm, a preforming forging press, a final forging pre-mechanical arm, a final forging forging press, a final forging post-mechanical arm and a forging post-conveying belt. The forging pre-conveying belt is used for inputting short cylindrical blank for forging, the upsetting pre-mechanical arm is used for transferring the short cylindrical blank on the forging pre-conveying belt to the upsetting forging press for upsetting, the preforming pre-mechanical arm is used for transferring the blank after upsetting to the preforming forging press for preforming, the final forging pre-mechanical arm is used for transferring the blank after preforming to the final forging forging press, the final forging post-mechanical arm is used for transferring the gear product after final forging to the forging post-conveying belt, and the forging post-conveying belt is used for outputting the gear product.

2. A forging press for a gear forging line as claimed in claim 1, characterized in that, The upsetting forging press, the preforming forging press and the final forging forging press each comprise a rack, a forging hydraulic cylinder mounted on the rack, a moving die mounted on the piston rod end of the forging hydraulic cylinder, and a fixed die mounted on the rack and located directly below the moving die. The base and the side wall of the fixed die are embedded with heating modules, and the rack is mounted with heat preservation plates outside the fixed die.

3. A forging press for a gear forging line as claimed in claim 2, characterized in that The heating modules are electric resistance heating modules.

4. A swaging apparatus for a gear swaging line as defined in claim 2, wherein The forging equipment comprises a heat preservation chamber, an input port only for the forging pre-conveying belt is left at the front end of the heat preservation chamber in the longitudinal direction, an output port only for the forging post-conveying belt is left at the rear end of the heat preservation chamber in the longitudinal direction, and the outer periphery of the heat preservation chamber outside the forging pre-conveying belt is provided with a heat preservation fence.

5. A swaging apparatus for a gear swaging line as defined in claim 2, wherein The forging equipment comprises a hydraulic control system, which comprises a total oil tank, an upsetting oil pump, a preforming oil pump, a final forging oil pump, an upsetting filter, a preforming filter, a final forging filter, an upsetting electromagnetic reversing valve, a preforming electromagnetic reversing valve and a final forging electromagnetic reversing valve. The forging hydraulic cylinders are defined as an upsetting hydraulic cylinder, a preforming hydraulic cylinder and a final forging hydraulic cylinder according to the upsetting, preforming and final forging processes. The total oil tank, the upsetting oil pump, the upsetting filter, the upsetting electromagnetic reversing valve and the upsetting hydraulic cylinder are connected through an oil pipe A. The total oil tank, the preforming oil pump, the preforming filter, the preforming electromagnetic reversing valve and the preforming hydraulic cylinder are connected through an oil pipe B. The total oil tank, the final forging oil pump, the final forging filter, the final forging electromagnetic reversing valve and the final forging hydraulic cylinder are connected through an oil pipe C. The oil pipe A between the upsetting electromagnetic reversing valve and the upsetting hydraulic cylinder comprises an oil pipe 1A connected with the upper inlet of the hydraulic cylinder and an oil pipe 2A connected with the lower inlet of the hydraulic cylinder; the oil pipe B between the preforming electromagnetic reversing valve and the preforming hydraulic cylinder comprises an oil pipe 1B connected with the upper inlet of the hydraulic cylinder and an oil pipe 2B connected with the lower inlet of the hydraulic cylinder; and the oil pipe C between the final forging electromagnetic reversing valve and the final forging hydraulic cylinder comprises an oil pipe 1C connected with the upper inlet of the hydraulic cylinder and an oil pipe 2C connected with the lower inlet of the hydraulic cylinder.

6. A forging press for a gear forging line as claimed in claim 5, characterized in that The communication pipe is arranged between the oil pipe 1A and the oil pipe 1B, and the electric butterfly valve AB1 is arranged on the communication pipe; the communication pipe is arranged between the oil pipe 2A and the oil pipe 2B, and the electric butterfly valve AB2 is arranged on the communication pipe; the communication pipe is arranged between the oil pipe 1C and the oil pipe 1B, and the electric butterfly valve CB1 is arranged on the communication pipe; the communication pipe is arranged between the oil pipe 2C and the oil pipe 2B, and the electric butterfly valve CB2 is arranged on the communication pipe; the connecting point of the communication pipe and the oil pipe B is arranged on the side close to the electromagnetic reversing valve for preforming; the electric butterfly valve BB is arranged on the oil pipe 1B and the oil pipe 2B, and the electric butterfly valve BB is arranged on the side close to the hydraulic cylinder for preforming.

7. A forging press for a gear forging line as claimed in claim 6, characterized in that The overflow valve is arranged on the oil pipe A, the oil pipe B and the oil pipe C.

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