A die for multi-directional forging of valve cover and its insert quick-change structure

Abstract

The present invention relates to the field of die technology, and in particular to a die for multi-directional die forging of a valve cover and its insert quick-change structure, including a die, wherein the die is composed of an upper die and a lower die used in conjunction with each other, a left punch and a right punch are installed on the two side walls of the lower die through a flange sleeve, a lower die valve cover cavity is provided in the lower die, a lower insert cavity is opened at the center of the lower die valve cover cavity, and an insert is arranged in the lower insert cavity. When the present invention is in use, a first locking mechanism is arranged on the side wall of the lower insert cavity, and a second locking mechanism is arranged on the bottom, when the upper die is matched with a linkage assembly, when the upper die is moved down to close the mold with the lower die, the linkage assembly is synchronously driven to move down, and the linkage assembly automatically drives the first locking mechanism and the second locking mechanism to lock and fix the insert in the lower insert cavity, thereby realizing the rapid fixation of the insert, and when the upper die is moved up and separated from the lower die, the first locking mechanism and the second locking mechanism are automatically unlocked.

Description

Technical Field

[0001] The invention relates to the technical field of dies, in particular to a die for multi-directional die forging of a valve cover and an insert quick-change structure thereof. Background Art

[0002] The Chinese patent application with publication number CN113369432A discloses a die forging die for a container connecting corner piece, which relates to the field of die forging technology, including an upper forging die and a lower forging die, wherein the upper forging die is provided with an upper die cavity, the lower forging die is provided with a lower die cavity, the upper forging die and the lower forging die are arranged relative to each other, the upper die cavity and the lower die cavity form a forging die cavity, the shape of the forging die cavity matches the shape of the part, a flash bridge is arranged on the outer side of the upper die cavity, a first flash structure is arranged on the outer side of the flash bridge, a second flash structure is arranged on the outer side of the lower die cavity, the flash bridge and the first flash structure are arranged relative to the second flash structure, and the first flash structure and the second flash structure form a flash bin. The present invention makes reasonable use of space, has a novel structure, is highly practical, and can effectively improve production efficiency.

[0003] As mentioned above, at present, when multi-directional hydraulic die forging equipment is widely popular, although the products of multi-directional die forging have high precision, small processing allowance, fast production efficiency and excellent mechanical properties of materials, the service life of the mold has always been a headache for various companies. Forging companies use integrated molds in the production process, and their cavities fail due to long heating time and slow cooling, and even break. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a die for multi-directional forging of a valve cover and a quick-change structure for inserts thereof.

[0005] The present invention adopts the following technical scheme: an insert quick-change structure of a die for multi-directional die forging of a valve cover, comprising a die, wherein the die is composed of an upper die and a lower die used in conjunction with each other, a left punch and a right punch are installed on both side walls of the lower die through a flange sleeve, a lower die valve cover cavity is provided in the lower die, a lower insert cavity is opened at the center of the lower die valve cover cavity, and an insert is arranged in the lower insert cavity;

[0006] The lower mold is provided with first strip grooves on both sides of the lower insert cavity, and the lower mold is provided with a second strip groove at the bottom of the lower insert cavity, and the second strip groove and the first strip groove are arranged perpendicular to each other, and the two ends of the second strip groove are respectively connected to the two first strip grooves;

[0007] A first locking mechanism is arranged on the side wall of the lower insert cavity, a second locking mechanism is arranged on the bottom of the lower insert cavity, and a linkage assembly is arranged on the upper mold. When the upper mold moves downward and closes with the lower mold, the linkage assembly is synchronously driven downward, and the linkage assembly automatically drives the first locking mechanism and the second locking mechanism to lock and fix the insert in the lower insert cavity.

[0008] As a further description of the above technical solution: the first locking mechanism includes a side movable groove opened on the inner wall of the lower insert cavity, and the side movable groove is connected to the first strip groove, and a sliding groove is opened on the upper and lower side walls of the side movable groove, a first wedge-shaped locking block is arranged in the side movable groove, and sliders are welded to the bottom and top of the first wedge-shaped locking block, the slider is slidably connected to the sliding groove, a first spring is welded on a side wall of the slider close to the lower insert cavity, and an inclined end of the first wedge-shaped locking block extends into the first strip groove.

[0009] As a further description of the above technical solution: the linkage component is a bar block, and the bottom end of the bar block is an inclined structure.

[0010] As a further description of the above technical solution: the second locking mechanism includes a lower movable groove opened at the bottom of the lower insert cavity, and the lower movable groove and the second strip groove are connected to each other, a second wedge-shaped locking block that can move up and down is inserted in the lower movable groove, two wedge-shaped driving blocks are arranged at both ends of the second strip groove along the length direction, and the two ends of the two wedge-shaped driving blocks that are away from each other extend into the first strip groove, and the ends of the two wedge-shaped driving blocks that are close to each other are provided with connecting seats, and a second spring is fixed between the two connecting seats.

[0011] As a further description of the above technical solution: a first locking groove for cooperating with a first wedge-shaped locking block is provided on the side wall of the insert, and a second locking groove for cooperating with a second wedge-shaped locking block is provided at the bottom of the insert.

[0012] As a further description of the above technical solution: an upper mold valve cover cavity is provided on the lower surface of the upper mold, upper mold pressure plate grooves are opened on the two side walls of the upper mold along the length direction, lower mold pressure plate grooves are opened on the two side walls of the lower mold along the length direction, an ejector hole is opened on the lower mold, and an ejector is arranged in the ejector hole.

[0013] As a further description of the above technical solution: it also includes a preheating temperature control and adjustment system, which is used to adjust the preheating temperature of the mold to avoid excessive temperature gradient when the blank contacts the mold, thereby causing stress and cracks inside the blank;

[0014] The preheating temperature control and regulation system comprises:

[0015] A data acquisition module is used to obtain mold preheating temperature data and mold preheating control parameter data, wherein the mold preheating control parameter data includes a preheating time N and a preheating temperature W, and obtain the mold preheating temperature Wt at time T during the preheating of the mold based on the established preheating control parameter data;

[0016] The preheating temperature prediction module inputs the mold material data, mold weight data and real-time control parameters into a machine learning model preconfigured for predicting the preheating temperature, and predicts the preheating temperature under the preparation time T, which is recorded as the predicted preheating temperature Wy;

[0017] The analysis control module compares the preheating temperature at the preparation time T with the predicted preheating temperature, obtains the temperature decay value, compares and analyzes the temperature decay value with the preset temperature decay value threshold, generates an adjustment instruction, and triggers the data acquisition module when T=T+M, where M is an integer greater than zero;

[0018] The loop module repeats the above data acquisition module to the analysis and control module until T=N, then the loop ends and the mold is preheated.

[0019] As a further description of the above technical solution: the training method of the machine learning model for predicting the preheating temperature includes:

[0020] Collect historical comprehensive data of mold preheating;

[0021] The historical comprehensive data of mold preheating includes mold material data, mold weight data, real-time control parameters and preheating temperature; wherein the real-time control parameters are heating temperature data and heating time data at the current moment;

[0022] Convert the collected historical comprehensive data into a corresponding set of feature vectors;

[0023] The mold material data, mold weight data and real-time control parameters in the historical comprehensive data are used as the input of the machine learning model. The machine learning model takes the preheating temperature corresponding to each set of mold material data, mold weight data and real-time control parameters as the output, and takes the preheating temperature actually corresponding to each set of mold material data, mold weight data and real-time control parameters as the prediction target. Minimizing the loss function value of the machine learning model is used as the training target. When the loss function value of the machine learning model is less than or equal to the preset target loss value, the training is stopped. The machine learning model is a deep belief network model.

[0024] As a further description of the above technical solution: the method for obtaining the temperature decay value is:

[0025] , where is the temperature decay value;

[0026] The adjustment instructions include a primary heating temperature increase instruction, a secondary heating temperature increase instruction and a maintenance instruction, wherein the heating temperatures of the primary heating temperature increase instruction and the secondary heating temperature increase instruction increase in sequence.

[0027] The method of comparing and analyzing the temperature decay value with the preset safe temperature decay value and generating an adjustment instruction includes:

[0028] Preset temperature decay value threshold , and ,0< < < ;

[0029] when ≤ When , no adjustment instruction is generated, that is, the heater continues to be controlled to heat the mold using the established control parameters;

[0030] when < ≤ When , a first-level heating temperature increase instruction is generated;

[0031] when < ≤ When , a secondary heating temperature increase instruction is generated;

[0032] when > When a maintenance instruction is generated.

[0033] A die for multi-directional forging of a valve cover comprises an insert quick-change structure of the die for multi-directional forging of a valve cover.

[0034] Beneficial effects:

[0035] The present invention provides a valve cover multi-directional die forging die and an insert quick-change structure thereof, wherein the central part of the stress concentrated part in the lower die valve cover cavity is made into an inlay module, that is, the insert and the insert cavity are used in conjunction with each other, and the inlay is made of die steel, which enhances the heat resistance of the insert and reduces the maintenance cost of the later die. When the insert is excessively worn, it only needs to be replaced, which is convenient and quick, saving die repair time and maintenance cost;

[0036] Furthermore, during use, a first locking mechanism is provided on the side wall of the lower insert cavity, and a second locking mechanism is provided on the bottom, and a linkage assembly is provided on the upper mold. When the upper mold is moved downward to close the mold with the lower mold, the linkage assembly is synchronously driven downward, and the linkage assembly automatically drives the first locking mechanism and the second locking mechanism to lock and fix the insert in the lower insert cavity, thereby realizing rapid fixation of the insert. When the upper mold is moved upward and separated from the lower mold, the first locking mechanism and the second locking mechanism are automatically unlocked, thereby greatly improving the replacement efficiency of the insert and reducing the difficulty of replacement. In addition, the rapid disassembly of the insert also facilitates the cleaning and maintenance of the lower mold valve cover cavity.

[0037] Finally, a preheating temperature control adjustment system is provided, which can collect the preheating temperature of the mold at the current moment in real time during the preheating process of the mold, compare and analyze it with the predicted preset temperature, and generate adjustment instructions to adjust the control parameter data to prevent the mold preheating temperature from failing to meet the standard due to external environment (temperature, humidity) and other factors within the established preheating time, that is, to avoid excessive temperature gradient when the blank contacts the mold, which may cause stress and cracks inside the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0039] Figure 1 A front view of a die for multi-directional forging of a valve cover provided by the present invention;

[0040] Figure 2 A schematic diagram of the structure of a die for multi-directional forging of a valve cover provided by the present invention;

[0041] Figure 3 A schematic cross-sectional view of a die for multi-directional forging of a valve cover provided by the present invention;

[0042] Figure 4 A schematic cross-sectional view of the lower mold provided by the present invention;

[0043] Figure 5 The present invention provides Figure 3 A magnified view of area A in;

[0044] Figure 6 The present invention provides Figure 3 Magnified view of area B in .

[0045] In the figure: 1, upper die; 2, lower die; 3, left punch; 4, right punch; 5, strip block; 6, first strip groove; 61, side movable groove; 62, slide groove; 7, ejector pin; 8, second strip groove; 81, first wedge-shaped locking block; 82, slider; 83, first spring; 84, lower movable groove; 9, upper die valve cover cavity; 10, lower die valve cover cavity; 11, lower insert cavity; 12, wedge-shaped driving block; 121, connecting seat; 122, second spring; 123, second wedge-shaped locking block; 13, ejector pin hole; 14, first locking groove; 15, second locking groove; 16, lower die platen groove; 17, upper die platen groove; 18, insert. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0047] Example 1

[0048] See also Figure 1-Figure 6 The embodiment of the present invention provides a technical solution: an insert quick-change structure of a die for multi-directional die forging of a valve cover, comprising a die, wherein the die is composed of an upper die 1 and a lower die 2 that cooperate with each other, a left punch 3 and a right punch 4 are installed on both side walls of the lower die 2 through a flange sleeve, a lower die valve cover cavity 10 is provided in the lower die 2, a lower insert cavity 11 is opened at the center of the lower die valve cover cavity 10, and an insert 18 is arranged in the lower insert cavity 11;

[0049] A first strip groove 6 is provided on both sides of the lower insert cavity 11 in the lower mold 2, and a second strip groove 8 is provided at the bottom of the lower insert cavity 11 in the lower mold 2, and the second strip groove 8 and the first strip groove 6 are arranged perpendicular to each other, and the two ends of the second strip groove 8 are respectively connected to the two first strip grooves 6;

[0050] A first locking mechanism is provided on the side wall of the lower insert cavity 11, a second locking mechanism is provided on the bottom of the lower insert cavity 11, and a linkage assembly is provided on the upper mold 1. When the upper mold 1 moves downward and closes with the lower mold 2, the linkage assembly is synchronously driven downward, and the linkage assembly automatically drives the first locking mechanism and the second locking mechanism to lock and fix the insert 18 in the lower insert cavity 11.

[0051] The first locking mechanism includes a side movable groove 61 opened on the inner wall of the lower insert cavity 11, and the side movable groove 61 is connected to the first strip groove 6, and a slide groove 62 is opened on the upper and lower side walls of the side movable groove 61. A first wedge-shaped locking block 81 is arranged in the side movable groove 61, and a slider 82 is welded to the bottom and top of the first wedge-shaped locking block 81. The slider 82 is slidably connected to the slide groove 62, and a first spring 83 is welded on a side wall of the slider 82 close to the lower insert cavity 11, and an inclined end of the first wedge-shaped locking block 81 extends into the first strip groove 6.

[0052] The linkage component is a bar block 5, and the bottom end of the bar block 5 is an inclined structure.

[0053] The second locking mechanism includes a lower movable groove 84 opened at the bottom of the lower insert cavity 11, and the lower movable groove 84 is connected to the second strip groove 8, and a second wedge-shaped locking block 123 that can move up and down is inserted in the lower movable groove 84. Two wedge-shaped driving blocks 12 are arranged at both ends of the second strip groove 8 along the length direction, and the two ends of the two wedge-shaped driving blocks 12 that are away from each other extend into the first strip groove 6. The ends of the two wedge-shaped driving blocks 12 that are close to each other are provided with connecting seats 121, and a second spring 122 is fixed between the two connecting seats 121.

[0054] The side wall of the insert 18 is provided with a first locking groove 14 used in conjunction with the first wedge-shaped locking block 81. The bottom of the insert 18 is provided with a second locking groove 15 used in conjunction with the second wedge-shaped locking block 123.

[0055] An upper mold valve cover cavity 9 is provided on the lower surface of the upper mold 1, upper mold plate grooves 17 are opened on the two side walls of the upper mold 1 along the length direction, lower mold plate grooves 16 are opened on the two side walls of the lower mold 2 along the length direction, and an ejector hole 13 is opened on the lower mold 2, and an ejector 7 is arranged in the ejector hole 13.

[0056] Specifically, the insert quick-change structure of the multi-directional die forging die of the valve cover is, before use, firstly placed in the lower insert cavity 11, and the insert 18 is assisted in positioning. When in use, the upper die 1 is controlled to move downward and close the lower die 2, and the linkage assembly is synchronously driven to move downward, and the linkage assembly automatically drives the first locking mechanism and the second locking mechanism to lock and fix the insert 18 in the lower insert cavity 11, thereby completing the positioning and fixing of the insert 18;

[0057] Furthermore, the linkage assembly drives the first locking mechanism and the second locking mechanism to lock and fix the insert 18 in the lower insert cavity 11 in a specific manner as follows: when the upper mold 1 moves downward to close the mold with the lower mold 2, the strip block 5 moves downward in the first strip groove 6, and firstly, the strip block 5 squeezes the first wedge-shaped locking block 81, driving the first wedge-shaped locking block 81 to move in the direction of the lower insert cavity 11, and the first spring 83 contracts, and the slider 82 also moves in the slide groove 62 in the direction of the lower insert cavity 11, and when the bottom end of the strip block 5 moves downward to below the first wedge-shaped locking block 81, the first wedge-shaped locking block 81 is squeezed by the strip block 5 to move into the first locking groove 14 opened on the side wall of the insert 18, thereby completing the locking and fixing of the first locking mechanism;

[0058] As the bar block 5 continues to move downward, the bottom end of the bar block 5 will be pressed against one end of the wedge-shaped driving block 12, thereby driving the two wedge-shaped driving blocks 12 to approach each other, and the second spring 122 located between the two wedge-shaped driving blocks 12 will contract. As the two wedge-shaped driving blocks 12 approach each other, the second wedge-shaped locking block 123 will be pushed upward to the second locking groove 15 provided at the bottom of the insert 18, thereby completing the locking and fixing of the second locking mechanism.

[0059] When the lower insert 18 needs to be removed, the upper mold 1 is controlled to move upward, driving the strip block 5 to move upward in the first strip groove 6. When the strip block 5 moves upward to the top of the wedge-shaped driving block 12, the two wedge-shaped driving blocks 12 are pushed back to the initial state by the rebound force of the second spring 122. The second wedge-shaped locking block 123 automatically moves downward under the action of gravity to separate from the second locking groove 15 opened at the bottom of the insert 18.

[0060] When the bar block 5 moves up to above the first wedge-shaped locking block 81, under the action of the rebound force of the first spring 83, the slider 82 is pushed to slide in the slide groove 62, and the first wedge-shaped locking block 81 is separated from the first locking groove 14 opened on the side wall of the insert 18 by the slider 82.

[0061] That is, through the setting of the linkage assembly, the first locking mechanism and the second locking mechanism, the insert 18 is quickly fixed. When the upper mold 1 is moved up and separated from the lower mold 2, the first locking mechanism and the second locking mechanism are automatically unlocked, which greatly improves the replacement efficiency of the insert 18 and reduces its replacement difficulty. The quick disassembly of the insert 18 also facilitates the cleaning and maintenance of the lower mold valve cover cavity 10.

[0062] Example 2

[0063] A quick-change structure for inserts of a die for multi-directional die forging of a valve cover, further comprising a preheating temperature control and adjustment system, wherein the preheating temperature control and adjustment system is used to adjust the preheating temperature of the die to avoid excessive temperature gradient when the blank contacts the die, thereby causing stress and cracks inside the blank;

[0064] The preheating temperature control and regulation system comprises:

[0065] A data acquisition module is used to obtain mold preheating temperature data and mold preheating control parameter data, wherein the mold preheating control parameter data includes a preheating time N and a preheating temperature W, and obtain the mold preheating temperature Wt at time T during the preheating of the mold based on the established preheating control parameter data;

[0066] The preheating temperature prediction module inputs the mold material data, mold weight data and real-time control parameters into a machine learning model preconfigured for predicting the preheating temperature, and predicts the preheating temperature under the preparation time T, which is recorded as the predicted preheating temperature Wy;

[0067] The analysis control module compares the preheating temperature at the preparation time T with the predicted preheating temperature, obtains the temperature decay value, compares and analyzes the temperature decay value with the preset temperature decay value threshold, generates an adjustment instruction, and triggers the data acquisition module when T=T+M, where M is an integer greater than zero;

[0068] The loop module repeats the above data acquisition module to the analysis and control module until T=N, then the loop ends and the mold is preheated.

[0069] The training method of the machine learning model for predicting preheat temperature includes:

[0070] Collect historical comprehensive data of mold preheating;

[0071] The historical comprehensive data of mold preheating includes mold material data, mold weight data, real-time control parameters and preheating temperature; wherein the real-time control parameters are heating temperature data and heating time data at the current moment;

[0072] Convert the collected historical comprehensive data into a corresponding set of feature vectors;

[0073] The mold material data, mold weight data and real-time control parameters in the historical comprehensive data are used as the input of the machine learning model. The machine learning model takes the preheating temperature corresponding to each set of mold material data, mold weight data and real-time control parameters as the output, and takes the preheating temperature actually corresponding to each set of mold material data, mold weight data and real-time control parameters as the prediction target. Minimizing the loss function value of the machine learning model is used as the training target. When the loss function value of the machine learning model is less than or equal to the preset target loss value, the training is stopped. The machine learning model is a deep belief network model.

[0074] It should be noted that in the machine learning model, the calculation formula of the loss function is: ,in, is the number of the characteristic data (i.e., mold material data, mold weight data and real-time control parameters), is the prediction error, For the The predicted state value corresponding to the group feature data, the state value is the preheating temperature, For the The actual state value corresponding to the group training data.

[0075] The method for obtaining the temperature decay value is:

[0076] , where is the temperature decay value;

[0077] The adjustment instructions include a primary heating temperature increase instruction, a secondary heating temperature increase instruction and a maintenance instruction, wherein the heating temperatures of the primary heating temperature increase instruction and the secondary heating temperature increase instruction increase in sequence.

[0078] The method of comparing and analyzing the temperature decay value with the preset safe temperature decay value and generating an adjustment instruction includes:

[0079] Preset temperature decay value threshold , and ,0< < < ; The temperature decay value threshold is determined by those skilled in the art based on a large number of experiments.

[0080] when ≤ When , no adjustment instruction is generated, that is, the heater continues to be controlled to heat the mold using the established control parameters;

[0081] when < ≤ When , a first-level heating temperature increase instruction is generated;

[0082] when < ≤ When , a secondary heating temperature increase instruction is generated;

[0083] when > When the temperature decay value is greater than When , it proves that simply adjusting the control parameters cannot achieve the adjustment purpose, and maintenance is needed.

[0084] Specifically, by providing a preheating temperature control and adjustment system, the preheating temperature of the mold at the current moment can be collected in real time during the preheating process of the mold, and compared and analyzed with the predicted preset temperature, and adjustment instructions are generated based on the comparative analysis to adjust the control parameter data to prevent the mold preheating temperature from failing to meet the standard due to external environment (temperature, humidity) and other factors within the established preheating time, that is, to avoid excessive temperature gradients when the blank contacts the mold, thereby causing stress and cracks inside the blank.

[0085] Example 3

[0086] A die for multi-directional forging of a valve cover comprises an insert quick-change structure of the die for multi-directional forging of a valve cover.

[0087] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A quick-change structure for inserts of a multi-directional die forging die for a valve cover, comprising a die, wherein the die comprises an upper die (1) and a lower die (2) that cooperate with each other, a left punch (3) and a right punch (4) being mounted on both side walls of the lower die (2) via flange sleeves, It is characterized in that A lower die valve cover cavity (10) is provided in the lower die (2), a lower insert cavity (11) is opened at the center of the lower die valve cover cavity (10), and an insert (18) is arranged in the lower insert cavity (11); A first strip groove (6) is provided on both sides of the lower insert cavity (11) in the lower mold (2), and a second strip groove (8) is provided at the bottom of the lower insert cavity (11) in the lower mold (2), and the second strip groove (8) and the first strip groove (6) are arranged perpendicular to each other, and two ends of the second strip groove (8) are respectively connected to the two first strip grooves (6); A first locking mechanism is provided on the side wall of the lower insert cavity (11), a second locking mechanism is provided on the bottom of the lower insert cavity (11), and a linkage assembly is provided on the upper mold (1). When the upper mold (1) moves downward to close the mold with the lower mold (2), the linkage assembly is synchronously driven downward, and the linkage assembly automatically drives the first locking mechanism and the second locking mechanism to lock and fix the insert (18) in the lower insert cavity (11); The first locking mechanism comprises a side movable groove (61) formed on the inner wall of the lower insert cavity (11), and the side movable groove (61) and the first strip groove (6) are in mutual conduction, and a slide groove (62) is formed on the upper and lower side walls of the side movable groove (61), and a first wedge-shaped locking block (81) is arranged in the side movable groove (61), and a slider (82) is welded to the bottom and the top of the first wedge-shaped locking block (81), and the slider (82) is slidably connected to the slide groove (62), and a first spring (83) is welded to a side wall of the slider (82) close to the lower insert cavity (11), and an inclined surface end of the first wedge-shaped locking block (81) extends into the first strip groove (6); The linkage component is a bar block (5), and the bottom end of the bar block (5) is an inclined surface structure; The second locking mechanism comprises a lower movable groove (84) formed at the bottom of the lower insert cavity (11), and the lower movable groove (84) and the second strip groove (8) are in communication with each other, a second wedge-shaped locking block (123) capable of moving up and down is inserted into the lower movable groove (84), two wedge-shaped driving blocks (12) are arranged at both ends of the second strip groove (8) along the length direction, and both ends of the two wedge-shaped driving blocks (12) that are away from each other extend into the first strip groove (6), and both ends of the two wedge-shaped driving blocks (12) that are close to each other are provided with a connecting seat (121), and a second spring (122) is fixed between the two connecting seats (121); It also includes a preheating temperature control and adjustment system, which is used to control the preheating temperature of the mold; The preheating temperature control and regulation system comprises: A data acquisition module is used to obtain mold preheating temperature data and mold preheating control parameter data, wherein the mold preheating control parameter data includes a preheating time N and a preheating temperature W, and obtain the mold preheating temperature Wt at time T during the preheating of the mold based on the established preheating control parameter data; The preheating temperature prediction module inputs the mold material data, mold weight data and real-time control parameters into a machine learning model preconfigured for predicting the preheating temperature, and predicts the preheating temperature under the preparation time T, which is recorded as the predicted preheating temperature Wy; The analysis control module compares the preheating temperature at the preparation time T with the predicted preheating temperature, obtains the temperature decay value, compares and analyzes the temperature decay value with the preset temperature decay value threshold, generates an adjustment instruction, and triggers the data acquisition module when T=T+M, where M is an integer greater than zero; The loop module repeats the above data acquisition module to the analysis and control module until T=N, then the loop ends and the mold is preheated.

2. According to claim 1, a quick-change structure for inserts of a die for multi-directional forging of a valve cover, It is characterized in that A first locking groove (14) for use with a first wedge-shaped locking block (81) is formed on the side wall of the insert (18); and a second locking groove (15) for use with a second wedge-shaped locking block (123) is formed on the bottom of the insert (18).

3. The insert quick-change structure of the die for multi-directional forging of a valve cover according to claim 1, It is characterized in that An upper die valve cover cavity (9) is provided on the lower surface of the upper die (1), upper die pressing plate grooves (17) are provided on two side walls along the length direction of the upper die (1), lower die pressing plate grooves (16) are provided on two side walls along the length direction of the lower die (2), an ejector hole (13) is provided on the lower die (2), and an ejector (7) is provided in the ejector hole (13).

4. The insert quick-change structure of the die for multi-directional forging of a valve cover according to claim 1, It is characterized in that The training method of the machine learning model for predicting the preheating temperature includes: Collect historical comprehensive data of mold preheating; The historical comprehensive data of mold preheating includes mold material data, mold weight data, real-time control parameters and preheating temperature; wherein the real-time control parameters are heating temperature data and heating time data at the current moment; Convert the collected historical comprehensive data into a corresponding set of feature vectors; The mold material data, mold weight data and real-time control parameters in the historical comprehensive data are used as the input of the machine learning model. The machine learning model takes the preheating temperature corresponding to each set of mold material data, mold weight data and real-time control parameters as the output, and takes the preheating temperature actually corresponding to each set of mold material data, mold weight data and real-time control parameters as the prediction target. Minimizing the loss function value of the machine learning model is used as the training target. When the loss function value of the machine learning model is less than or equal to the preset target loss value, the training is stopped. The machine learning model is a deep belief network model.

5. The insert quick-change structure of the die for multi-directional forging of a valve cover according to claim 4, It is characterized in that The method for obtaining the temperature decay value is: , where is the temperature decay value; The adjustment instructions include a primary heating temperature increase instruction, a secondary heating temperature increase instruction and a maintenance instruction, wherein the heating temperatures of the primary heating temperature increase instruction and the secondary heating temperature increase instruction increase in sequence; The method of comparing and analyzing the temperature decay value with the preset safe temperature decay value and generating an adjustment instruction includes: Preset temperature decay value threshold , and ,0< < < ; when ≤ When , no adjustment instruction is generated, that is, the heater continues to be controlled to heat the mold using the established control parameters; when < ≤ When , a first-level heating temperature increase instruction is generated; when < ≤ When , a secondary heating temperature increase instruction is generated; when > When a maintenance instruction is generated.

6. A die for multi-directional forging of valve cover, It is characterized in that The invention comprises an insert quick-change structure of a die for multi-directional forging of a valve cover as described in any one of claims 1-5.

Images