Self-adaptive temperature measurement piston forging system and temperature measurement method thereof

Abstract

The invention belongs to the technical field of piston forging, and particularly relates to a self-adaptive temperature measurement piston forging system and a temperature measurement method thereof.The forging system comprises a rack, a machining table is installed, a lower die provided with a first cavity is installed on the machining table, a forging and pressing mechanism and a heating mechanism are installed on the rack, and a forging and pressing head is arranged at the output end of the forging and pressing mechanism; the forging and pressing head is connected with an upper die in a sliding mode, the upper die corresponds to the lower die and is provided with a second cavity, the heating mechanism is located below the lower die and is used for heating the lower die, and a temperature measuring mechanism is installed in the upper die and is used for conducting self-adaptive temperature measurement on the surface of a blank before forging and the surface of a forging piece after forging; the surface of the blank before forging and the surface of the forging piece after forging are subjected to self-adaptive temperature measurement, the accurate temperature of the blank and the accurate temperature of the forging piece are obtained, accurate temperature detection is improved, and the situation of temperature measurement lag is avoided based on direct temperature measurement of the surfaces of the blank and the forging piece.

Description

Technical Field

[0001] The invention belongs to the technical field of piston forging, and in particular relates to a self-adaptive temperature measurement piston forging system and a temperature measurement method thereof. Background Art

[0002] The common and representative methods of piston molding are usually casting and forging. Casting has low cost, high production efficiency and is suitable for mass production. However, compared with casting, forged pistons have higher strength and hardness, can withstand higher workloads and harsher working environments, and are suitable for manufacturing high-performance and high-precision pistons.

[0003] In piston forging, temperature detection of the blank before forging and the forged part after forging plays a very important role in the entire forging process. However, the shapes of the blank and the forged part are different, which means that the temperature measurement method in the traditional piston forging system is usually aimed at the mold or the inner wall of the mold cavity, which easily leads to defects such as temperature measurement lag and low accuracy in temperature measurement of the blank, which needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a piston forging system with adaptive temperature measurement and a temperature measurement method thereof in view of the above-mentioned technical problems, so as to achieve the effect of being able to adapt to the shape changes of the blank and the forging, with high accuracy and avoiding temperature measurement lag.

[0005] In view of this, the present invention provides a piston forging system with adaptive temperature measurement, comprising:

[0006] A frame with a processing table installed;

[0007] The lower mold is installed on the processing table and has a first cavity;

[0008] The forging mechanism is mounted on the frame and is located above the processing table, and a forging head is provided at the output end;

[0009] The upper die is slidably connected to the forging head and is arranged corresponding to the lower die and has a second cavity;

[0010] A heating mechanism is installed in the frame and is located below the lower mold, and is used to heat the lower mold;

[0011] The temperature measuring mechanism is installed in the upper die and is used for self-adaptive temperature measurement of the surface of the blank before forging and the surface of the forged part after forging.

[0012] In the above technical solution, further, the temperature measuring mechanism includes:

[0013] The heat transfer rod is slidably connected in the upper mold, and a first slide groove adapted to the heat transfer rod is opened in the upper mold, and the first slide groove penetrates the inner wall of the second cavity;

[0014] The induction probe is installed in the upper mold, and a first installation hole for installing the induction probe is opened on the inner wall of the first slide groove;

[0015] A linkage assembly is installed in the upper die and is used for the heat transfer rod to follow the forging head to rise and fall, and is used for making one end of the heat transfer rod contact the surface of the blank before forging and the surface of the forged part after forging;

[0016] When the heat transfer rod slides along the first sliding groove, its side surface always contacts the sensing probe.

[0017] In the above technical solution, further:

[0018] A plurality of temperature measuring mechanisms are arranged around the forging head, and a plurality of heat transfer rods are arranged radially on a side of the second cavity away from the axis.

[0019] In the above technical solution, further, the linkage component includes:

[0020] The driving rod is slidably connected in the upper mold, and a second sliding groove adapted to the driving rod is opened in the upper mold;

[0021] The linkage rod is rotatably mounted in the upper mold, and its two ends are respectively hinged to the driving rod and the heat transfer rod, and a slot hole for the linkage rod to rotate is opened in the upper mold;

[0022] A pressure plate is mounted on the surface of the forging head and is located above the upper die, and is used to push the driving rod to slide in the second slide groove;

[0023] The linkage rod is a telescopic rod, and two of them are provided, and form a parallelogram structure with the heat transfer rod and the driving rod.

[0024] In the above technical solution, further, it also includes:

[0025] The sealing cover is sleeved on the surface of the forging head, connected to the upper end surface of the upper die, and is provided with a through hole corresponding to the second slide groove.

[0026] In the above technical solution, further:

[0027] The linkage rod comprises a cylinder and round rods slidably connected to both ends of the cylinder, and a rotating shaft is arranged on the surface at the axial center of the cylinder, and the rotating shaft is rotatably connected to the inner wall of the slot hole;

[0028] Among them, a limiting piece is arranged between one end of the round rod located at both ends of the cylinder and the cylinder, and a hinge piece is arranged between the other end and the heat transfer rod and the driving rod respectively.

[0029] In the above technical solution, further, the linkage component also includes:

[0030] The spring is installed in the cylinder, and both ends of the spring are respectively in contact with the round rod.

[0031] In the above technical solution, further:

[0032] An installation groove is provided on the inner wall of the slot hole in the upper mold, and an installation block is installed in the installation groove;

[0033] A circular hole adapted to the rotating shaft is provided on the mounting block, and the rotating shaft and the inner wall of the circular hole are connected by a bearing.

[0034] In the above technical solution, further:

[0035] A second mounting hole for the forging head to extend into is provided in the upper die, and two ends of the second mounting hole respectively penetrate the second cavity and the surface of the upper die;

[0036] A third sliding groove is provided on the inner wall of the second mounting hole, and a sliding block slidably connected to the third sliding groove is provided on the surface of the forging head.

[0037] The present invention provides a temperature measurement method for a piston forging system with adaptive temperature measurement, comprising the following steps:

[0038] S1: preheating and keeping the lower die warm by the heating mechanism, then placing the heated blank in the first cavity, and moving the forging mechanism downward until the upper die is matched with the lower die;

[0039] S2: When the upper die and the lower die are matched, the bottom end of the heat transfer rod contacts the surface of the blank and transfers the heat to the induction probe. The induction probe obtains the temperature value, that is, the temperature of the blank before forging;

[0040] S3: When the temperature of the blank before forging meets the forging requirement, the forging mechanism drives the forging head to move downward to forge the blank, and drives the pressure plate to press downward during the downward movement of the forging head;

[0041] S4: The pressure plate pushes the driving rod to slide downward in the second slide groove, and drives the linkage rod to rotate, thereby driving the heat transfer rod to slide upward in the second slide groove, so that the bottom surface of the heat transfer rod moves to be flush with the inner wall of the second cavity;

[0042] S5: After forging, the heating device is turned off for cooling. The bottom end of the heat transfer rod contacts the surface of the forged piece and transfers the heat to the induction probe. The induction probe obtains the temperature value, that is, the temperature of the forged piece after forging.

[0043] S6: According to the temperature feedback of the induction probe, when the forging piece is cooled, the forging mechanism drives the forging head to reset, and the forging mechanism moves up and resets, and the forging piece can be taken out.

[0044] The beneficial effects of the present invention are:

[0045] 1. By adaptively measuring the surface of the blank before forging and the surface of the forged part after forging, the accurate temperature of the blank and the forged part can be obtained, the accurate detection of temperature can be improved, and the temperature can be directly measured on the surface of the blank and the forged part to avoid the temperature measurement lag.

[0046] 2. By forming a parallelogram structure of the heat transfer rod, the driving rod and the two linkage rods, when the driving rod moves downward, it will drive the two driving rods to rotate, thereby driving the heat transfer rod to rise, so that the heat transfer rod can adapt to the shape of the blank and forging, and can measure the temperature of the highest surface of the blank and forging, effectively improving the accuracy of temperature measurement and avoiding temperature measurement lag.

[0047] 3. The parallelogram structure can effectively ensure that the driving rod and the heat transfer rod are lifted and lowered in a vertical state, thereby ensuring the stability of the lifting of the driving rod and the heat transfer rod. The linkage rod adopts a telescopic rod structure, which can effectively prevent the driving rod and the heat transfer rod from generating an arc trajectory during the lifting process, thereby further ensuring the stability of the lifting of the driving rod and the heat transfer rod.

[0048] 4. By setting the die as an upper die slidably connected to the forging head and a lower die installed on the processing table, when the blank is placed on the lower die, the upper die can serve as a pot cover structure, thereby improving the heat preservation effect of the heating device on the blank in the die, improving the forging effect, and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the structure of the present invention;

[0050] Figure 2 is a side view of the present invention;

[0051] Figure 3 The present invention Figure 2 Sectional view at AA in the middle;

[0052] Figure 4 The present invention Figure 3 The enlarged view of point B in the middle;

[0053] Figure 5 It is a structural schematic diagram of the temperature measuring mechanism of the present invention;

[0054] The markings in the figure are as follows: 1. frame; 2. processing table; 3. lower mold; 30. first cavity; 4. forging mechanism; 40. forging head; 41. slider; 5. upper mold; 50. second cavity; 51. first slide; 52. first mounting hole; 53. second slide; 54. slot; 55. mounting slot; 56. mounting block; 57. round hole; 58. second mounting hole; 59. third slide; 6. temperature measuring mechanism; 60. heat transfer rod; 61. induction probe; 62. linkage assembly; 620. driving rod; 621. linkage rod; 6210. cylinder; 6211. round rod; 6212. rotating shaft; 6213. limiter; 6214. hinge; 622. pressure plate; 623. spring; 7. cover; 70. through hole. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0056] Embodiment 1:

[0057] This embodiment provides a piston forging system with adaptive temperature measurement, including:

[0058] A frame 1 is provided with a processing table 2;

[0059] The lower mold 3 is mounted on the processing table 2 and has a first mold cavity 30;

[0060] The forging mechanism 4 is mounted on the frame 1 and is located above the processing table 2, and a forging head 40 is provided at the output end;

[0061] The upper die 5 is slidably connected to the forging head 40 and is arranged corresponding to the lower die 3 and has a second die cavity 50;

[0062] A heating mechanism is installed in the frame 1 and is located below the lower mold 3, and is used to heat the lower mold 3;

[0063] The temperature measuring mechanism 6 is installed in the upper die 5 and is used for self-adaptive temperature measurement of the surface of the blank before forging and the surface of the forged part after forging;

[0064] Among them, there is also a lifting mechanism in the frame 1 for driving the forging mechanism 4 to rise and fall, and the specific structures of the lifting mechanism, the forging mechanism 4 and the heating mechanism are all existing mature technologies, which will not be repeated here.

[0065] It can be seen from this embodiment that by adaptively measuring the surface of the blank before forging and the surface of the forged part after forging, the accurate temperature of the blank and the forged part is obtained, the accurate detection of the temperature is improved, and the temperature is directly measured based on the surface of the blank and the forged part to avoid the temperature measurement lag;

[0066] By setting the mold as an upper mold 5 slidably connected to the forging head 40 and a lower mold 3 installed on the processing table 2, when the blank is placed on the lower mold 3, the upper mold 5 can act as a pot cover structure, thereby improving the insulation effect of the heating device on the blank in the mold, improving the forging effect, and ensuring product quality.

[0067] Embodiment 2:

[0068] This embodiment provides a piston forging system with adaptive temperature measurement, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The temperature measurement mechanism 6 includes:

[0069] The heat transfer rod 60 is slidably connected in the upper mold 5, and a first slide groove 51 adapted to the heat transfer rod 60 is opened in the upper mold 5, and the first slide groove 51 passes through the inner wall of the second cavity 50;

[0070] The sensing probe 61 is installed in the upper mold 5, and a first mounting hole 52 for mounting the sensing probe 61 is opened on the inner wall of the first slide groove 51;

[0071] The linkage assembly 62 is installed in the upper die 5 and is used for the heat transfer rod 60 to follow the forging head 40 to rise and fall, and is used for making one end of the heat transfer rod 60 contact the surface of the blank before forging and the surface of the forged part after forging;

[0072] When the heat transfer rod 60 slides along the first slide groove 51, its side surface always contacts the sensing probe 61;

[0073] Meanwhile, the heat transfer rod 60 may be a copper rod, and the induction probe 61 is only a local component of the temperature sensor, while other structures of the temperature sensor are existing mature technologies and will not be described here.

[0074] It can be seen from this embodiment that the heat transfer rod 60 is slidably connected in the upper die 5 so that it can be raised and lowered, thereby adapting to the shapes of the blank and the forged part, and the linkage assembly 62 facilitates the forging head 40 to drive the heat transfer rod 60 to rise during forging, thereby ensuring linkage;

[0075] The sensing probe 61 is set in the upper mold 5 and is always in contact with the side of the heat transfer rod 60. The heat is transferred to the sensing probe 61 through the heat transfer rod 60 to ensure the temperature measurement accuracy and avoid the sensing probe 61 directly contacting the blank or the casting to avoid damage to the sensing probe 61 and extend the service life. At the same time, it will not be affected by the lifting and lowering of the heat transfer rod 60. The sensing probe 61 is always in contact with the heat transfer rod 60 to ensure the real-time temperature detection and avoid temperature measurement lag.

[0076] Embodiment 3:

[0077] This embodiment provides a piston forging system with adaptive temperature measurement, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0078] A plurality of temperature measuring mechanisms 6 are provided and arranged around the forging head 40 , and a plurality of heat transfer rods 60 are radially arranged on a side of the second cavity 50 away from the axis.

[0079] It can be seen from this embodiment that by providing multiple temperature measuring mechanisms 6, that is, adopting multi-point temperature measurement, the accuracy of temperature detection is further improved;

[0080] Because the heating device is placed below the lower mold 3, that is, the heating source is located on the bottom surface of the blank or forging, and the temperature at the center of the bottom surface is higher than the surrounding side of the bottom surface, multiple heat transfer rods 60 are radially arranged on the side of the second cavity 50 away from the axis, that is, multiple heat transfer rods 60 are in contact with the surrounding side of the top surface of the blank or forging, which can ensure as much as possible that after the temperature detection of the blank and the casting meets the casting requirements, the overall temperature meets the casting requirements to ensure product quality.

[0081] Embodiment 4:

[0082] This embodiment provides a piston forging system with adaptive temperature measurement. In addition to the technical solutions of the above embodiments, it also has the following technical features. The linkage assembly 62 includes:

[0083] The driving rod 620 is slidably connected in the upper mold 5, and a second sliding groove 53 adapted to the driving rod 620 is opened in the upper mold 5;

[0084] The linkage rod 621 is rotatably mounted in the upper mold 5, and its two ends are respectively hinged to the driving rod 620 and the heat transfer rod 60, and a slot 54 for the linkage rod 621 to rotate is provided in the upper mold 5;

[0085] The pressure plate 622 is mounted on the surface of the forging head 40 and is located above the upper die 5, and is used to push the driving rod 620 to slide in the second slide groove 53;

[0086] The linkage rod 621 is a telescopic rod, and two of them are provided, and form a parallelogram structure with the heat transfer rod 60 and the driving rod 620;

[0087] At the same time, the pressure plate 622 is sleeved on the surface of the forging head 40, and an interference fit can be adopted therebetween, and the pressure plate 622 and the driving rod 621 can be detachable or separated;

[0088] Specifically, assuming that after the linkage rod 620 is set, its initial angle in the opposite direction to the horizontal is X, if after the driving rod 620 and the heat transfer rod 60 are lifted and lowered, the rotation angle of the linkage rod is less than X, then the pressure plate 622 and the driving rod 621 are separated, and when the rotation angle of the linkage rod is greater than or equal to X, then the pressure plate 622 and the driving rod 621 are detachably set;

[0089] In addition, the height dimension to which the driving rod 620 lifts the heat transfer rod 60 through two linkage rods 621 is the same as the difference in height dimensions between the casting and the blank. Therefore, the lifting height of the heat transfer rod 60 is set according to the known difference in height dimensions between the casting and the blank (i.e., the height of the pressure plate 622, the length of the driving rod 620 and the length of the heat transfer rod 60, and the angle of the linkage rod 621, all of which can be obtained through experiments and will not be repeated here), to ensure that the bottom end of the heat transfer rod 60 can contact the blank and the casting.

[0090] It can be seen from this embodiment that by forming a parallelogram structure with the heat transfer rod 60, the driving rod 620 and the two linkage rods 621, when the driving rod 620 moves downward, it will drive the two driving rods to rotate, thereby driving the heat transfer rod 60 to rise, so that the heat transfer rod 60 can adapt to the shape of the blank and the forging, and can measure the temperature of the highest surface of the blank and the forging, effectively improving the accuracy of temperature measurement and avoiding temperature measurement lag;

[0091] In addition, the parallelogram structure can effectively ensure that the driving rod 620 and the heat transfer rod 60 are lifted and lowered in a vertical state, thereby ensuring the stability of the lifting and lowering of the driving rod 620 and the heat transfer rod 60. The linkage rod 621 adopts a telescopic rod structure, which can effectively prevent the driving rod 620 and the heat transfer rod 60 from generating an arc trajectory during the lifting process, thereby further ensuring the stability of the lifting and lowering of the driving rod 620 and the heat transfer rod 60.

[0092] Embodiment 5:

[0093] This embodiment provides a piston forging system with adaptive temperature measurement, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0094] The cover 7 is sleeved on the surface of the forging head 40 and connected to the upper end surface of the upper die 5, and is provided with a through hole 70 corresponding to the second slide groove 53;

[0095] The cover 7 and the upper mold 5 can be fastened with bolts.

[0096] It can be seen from the present embodiment that the setting of the cover 7 facilitates the installation of the temperature measuring mechanism 6 and can close the slot 54, thereby reducing the entry of workshop dust into the slot 54 and affecting the driving of the linkage assembly 62, while the opening of the through hole 70 avoids obstruction to the movement of the driving rod 620.

[0097] Embodiment 6:

[0098] This embodiment provides a piston forging system with adaptive temperature measurement, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0099] The linkage rod 621 includes a cylinder 6210 and a round rod 6211 slidably connected to both ends of the cylinder 6210, and a rotating shaft 6212 is provided on the surface of the axial center of the cylinder 6210, and the rotating shaft 6212 is rotatably connected to the inner wall of the slot 54;

[0100] Among them, a limiter 6213 is provided between one end of the round rod 6211 located at both ends of the cylinder 6210 and the cylinder 6210, and a hinge 6214 is provided between the other end and the heat transfer rod 60 and the driving rod 620 respectively;

[0101] At the same time, the limiting member 6213 includes a first bending portion extending from the cylinder 6210 toward the axis side and a second bending portion extending from the round rod 6211 away from the axis side, and the hinge 6214 can be connected by a bearing, and an integrated structure can be adopted between the rotating shaft 6212 and the cylinder 6210.

[0102] It can be seen from this embodiment that by setting the linkage rod 621 as a cylinder 6210 and a round rod 6211 slidably connected to the two ends of the cylinder 6210, both ends of the linkage rod 621 can be extended and retracted, ensuring that the driving rod 620 and the heat transfer rod 60 are in a vertical state and remain in a vertical state for lifting and lowering, thereby ensuring stability.

[0103] Embodiment 7:

[0104] This embodiment provides a piston forging system with adaptive temperature measurement. In addition to the technical solutions of the above embodiments, it also has the following technical features. The linkage assembly 62 also includes:

[0105] The spring 623 is installed in the cylinder 6210, and its two ends are respectively in contact with the round rod 6211.

[0106] It can be seen from this embodiment that the setting of the spring 623 facilitates the resetting between the cylinder 6210 and the round rod 6211, reduces the jamming between the cylinder 6210 and the round rod 6211, and further reduces the jamming during the movement of the driving rod 620 and the heat transfer rod 60, thereby ensuring a smooth driving effect.

[0107] Embodiment 8:

[0108] This embodiment provides a piston forging system with adaptive temperature measurement, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0109] A mounting groove 55 is provided on the inner wall of the slot hole 54 in the upper mold 5, and a mounting block 56 is installed in the mounting groove 55;

[0110] The mounting block 56 is provided with a circular hole 57 adapted to the rotating shaft 6212, and the rotating shaft 6212 and the inner wall of the circular hole 57 are connected by a bearing;

[0111] At the same time, the mounting block 56 and the mounting groove 55 can be connected by snapping.

[0112] It can be seen from the present embodiment that by opening a mounting groove 55 on the inner wall of the slot hole 54 and installing a mounting block 56 in the mounting groove 55, the installation of the temperature measuring mechanism 6 is facilitated, the rotating shaft 6212 is connected to the mounting block 56 by a bearing, and then the mounting block 56 is assembled in the mounting groove 55, thereby improving the convenience of installing the linkage rod 621 and ensuring the accuracy of the installation position of the linkage rod 621.

[0113] Embodiment 9:

[0114] This embodiment provides a piston forging system with adaptive temperature measurement, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0115] A second mounting hole 58 is provided in the upper die 5 for the forging head 40 to extend into, and two ends of the second mounting hole 58 respectively penetrate the second cavity 50 and the surface of the upper die 5;

[0116] A third slide groove 59 is provided on the inner wall of the second mounting hole 58, and a sliding block 41 slidably connected to the third slide groove 59 is provided on the surface of the forging head 40;

[0117] At the same time, the slider 41 and the forging head 40 may be in an integrated structure.

[0118] It can be seen from the present embodiment that by adopting the setting of the third slide groove 59 and the slider 41, the sliding connection between the forging head 40 and the upper die 5 is ensured, and the upper die 5 will not be lifted when the forging head 40 is reset. At the same time, when the forging mechanism 4 rises, the upper die 5 will rise accordingly, thereby facilitating the resetting of the forging head 40.

[0119] Embodiment 10:

[0120] This embodiment provides a temperature measurement method for a piston forging system with adaptive temperature measurement, comprising the following steps:

[0121] S1: preheating and keeping the lower die 3 warm by the heating mechanism, then placing the heated blank in the first cavity 30, and moving the forging mechanism 4 downward until the upper die 5 is matched with the lower die 3;

[0122] S2: When the upper die 5 and the lower die 3 are matched, the bottom end of the heat transfer rod 60 contacts the surface of the blank and transfers the heat to the induction probe 61. The induction probe 61 obtains the temperature value, that is, the temperature of the blank before forging;

[0123] S3: When the temperature of the blank before forging meets the forging requirement, the forging mechanism 4 drives the forging head 40 to move downward to forge the blank, and in the process of the forging head 40 moving downward, drives the pressure plate 622 to press downward;

[0124] S4: The pressure plate 622 pushes the driving rod 620 to slide downward in the second slide groove 53, and drives the linkage rod 621 to rotate, thereby driving the heat transfer rod 60 to slide upward in the second slide groove 53, so that the bottom surface of the heat transfer rod 60 moves to be flush with the inner wall of the second cavity 50;

[0125] S5: After forging, the heating device is turned off for cooling. The bottom end of the heat transfer rod 60 contacts the surface of the forged piece and transfers the heat to the induction probe 61. The induction probe 61 obtains the temperature value, that is, the temperature of the forged piece after forging.

[0126] S6: According to the temperature feedback of the induction probe 61, when the forging piece is cooled, the forging mechanism 4 drives the forging head 40 to reset, and the forging mechanism 4 moves upward and resets, and the forging piece can be taken out.

[0127] It can be seen from this embodiment that the temperature of the top surface of the blank is measured by the heat transfer rod 60 in the initial state. When it meets the forging requirements, the forging head 40 is pressed down for forging. In the process of the forging head 40 pressing down, the driving rod 620 is driven to move downward, and the heat transfer rod 60 is driven to rise through the linkage rod 621, so that the blank will not be affected by the increase in the forging forming height. After the forging head 40 forges the blank to form a forged part, the heat transfer rod 60 will measure the temperature of the top surface of the forged part to ensure the adaptive effect of the heat transfer rod 60 after the shape change of the blank and the forged part, and can measure the temperature of the surface of the blank and the forged part, improve the temperature measurement accuracy, and avoid temperature measurement lag.

[0128] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A piston forging system with adaptive temperature measurement, characterized in that: include: A frame (1) is provided with a processing table (2); A lower mold (3) is mounted on the processing table (2) and is provided with a first mold cavity (30); A forging mechanism (4) is mounted on the frame (1) and is located above the processing table (2), and is provided with a forging head (40) at the output end; An upper die (5) is slidably connected to the forging head (40), is arranged corresponding to the lower die (3), and is provided with a second die cavity (50); A heating mechanism is installed in the frame (1) and is located below the lower mold (3) and is used to heat the lower mold (3); The temperature measuring mechanism (6) is installed in the upper die (5) and is used for self-adaptive temperature measurement of the surface of the blank before forging and the surface of the forged piece after forging.

2. The piston forging system with adaptive temperature measurement according to claim 1 is characterized in that: The temperature measuring mechanism (6) comprises: A heat transfer rod (60) is slidably connected in the upper mold (5), and a first slide groove (51) adapted to the heat transfer rod (60) is provided in the upper mold (5), and the first slide groove (51) passes through the inner wall of the second cavity (50); The sensing probe (61) is installed in the upper mold (5), and a first mounting hole (52) for mounting the sensing probe (61) is provided on the inner wall of the first slide groove (51); A linkage assembly (62) is installed in the upper die (5) and is used for the heat transfer rod (60) to follow the forging head (40) to rise and fall, and is used for making one end of the heat transfer rod (60) contact the surface of the blank before forging and the surface of the forged piece after forging; When the heat transfer rod (60) slides along the first slide groove (51), its side surface always contacts the sensing probe (61).

3. The piston forging system with adaptive temperature measurement according to claim 2 is characterized in that: The temperature measuring mechanisms (6) are provided in plurality and are arranged around the forging head (40), and a plurality of heat transfer rods (60) are radially arranged on a side of the second cavity (50) away from the axis.

4. The piston forging system with adaptive temperature measurement according to claim 2, characterized in that: The linkage component (62) comprises: A driving rod (620) is slidably connected in the upper mold (5), and a second sliding groove (53) adapted to the driving rod (620) is provided in the upper mold (5); A linkage rod (621) is rotatably mounted in the upper mold (5), and its two ends are respectively hingedly connected to the driving rod (620) and the heat transfer rod (60), and a slot hole (54) for the linkage rod (621) to rotate is provided in the upper mold (5); A pressure plate (622) is mounted on the surface of the forging head (40) and is located above the upper die (5) and is used to push the driving rod (620) to slide in the second slide groove (53); The linkage rod (621) is a telescopic rod, and two of them are provided, and form a parallelogram structure with the heat transfer rod (60) and the driving rod (620).

5. The piston forging system with adaptive temperature measurement according to claim 4, characterized in that: Also includes: The sealing cover (7) is sleeved on the surface of the forging head (40), connected to the upper end surface of the upper die (5), and is provided with a through hole (70) corresponding to the second slide groove (53).

6. The piston forging system with adaptive temperature measurement according to claim 4, characterized in that: The linkage rod (621) comprises a cylinder (6210) and round rods (6211) slidably connected to both ends of the cylinder (6210), and a rotating shaft (6212) is provided on the surface at the axial center of the cylinder (6210), and the rotating shaft (6212) is rotatably connected to the inner wall of the slot hole (54); Among them, a round rod (6211) located at both ends of the cylinder (6210) is provided with a limiter (6213) between one end and the cylinder (6210), and a hinge (6214) is provided between the other end and the heat transfer rod (60) and the driving rod (620).

7. The piston forging system with adaptive temperature measurement according to claim 6, characterized in that: The linkage component (62) further comprises: The spring (623) is installed in the cylinder (6210), and its two ends are respectively in contact with the round rod (6211).

8. The piston forging system with adaptive temperature measurement according to claim 6, characterized in that: A mounting groove (55) is provided on the inner wall of the slot hole (54) in the upper mold (5), and a mounting block (56) is installed in the mounting groove (55); The mounting block (56) is provided with a circular hole (57) adapted to the rotating shaft (6212), and the rotating shaft (6212) and the inner wall of the circular hole (57) are connected by a bearing.

9. The piston forging system with adaptive temperature measurement according to claim 1, characterized in that: A second mounting hole (58) for the forging head (40) to extend into is provided in the upper mold (5), and two ends of the second mounting hole (58) respectively penetrate the second cavity (50) and the surface of the upper mold (5); A third sliding groove (59) is provided on the inner wall of the second mounting hole (58), and a sliding block (41) slidably connected to the third sliding groove (59) is provided on the surface of the forging head (40).

10. A temperature measurement method for a piston forging system using the adaptive temperature measurement method according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: preheating and keeping the lower die (3) warm by means of a heating mechanism, and then placing the heated blank in the first cavity (30), and moving the forging mechanism (4) downward until the upper die (5) is matched with the lower die (3); S2: When the upper die (5) and the lower die (3) are matched, the bottom end of the heat transfer rod (60) contacts the surface of the blank and transfers heat to the induction probe (61). The induction probe (61) obtains a temperature value, that is, the temperature of the blank before forging; S3: When the temperature of the blank before forging meets the forging requirement, the forging mechanism (4) drives the forging head (40) to move downward to forge the blank, and in the process of the forging head (40) moving downward, the pressure plate (622) is driven to press downward; S4: The pressure plate (622) pushes the driving rod (620) downward to slide downward in the second slide groove (53), and drives the linkage rod (621) to rotate, thereby driving the heat transfer rod (60) to slide upward in the second slide groove (53), so that the bottom surface of the heat transfer rod (60) moves to be flush with the inner wall of the second cavity (50); S5: After forging, the heating device is turned off for cooling, the bottom end of the heat transfer rod (60) contacts the surface of the forged piece and transfers the heat to the induction probe (61), and the induction probe (61) obtains a temperature value, that is, the temperature of the forged piece after forging; S6: According to the temperature feedback of the induction probe (61), when the forging piece has finished cooling, the forging mechanism (4) drives the forging head (40) to reset, and the forging mechanism (4) moves upward to reset, so that the forging piece can be taken out.

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