Forming die and forming method for automobile part machining

Abstract

The invention provides a forming mold and a forming method for automobile part machining, and relates to the technical field of automobile part forming. The forming mold comprises a lower mold base, and a lower forming mold body is detachably arranged at the upper end of the lower mold base; the lower portions of the vertical guide rods are connected to the periphery of the upper portion of the lower die base. A plurality of vertical through holes are formed in the upper die base, and the vertical guide rods penetrate through the vertical through holes in a one-to-one correspondence and sliding mode; the upper forming die body is detachably connected to the lower portion of the upper die base through a first connecting device. An upper die base and a lower die base are not fixedly arranged on each forming die body (composed of the upper forming die body and the lower forming die body), so that the cost is reduced. Cleaning fluid can be sprayed through the spray heads to clean the surface of the lower forming mold body and the surface of the upper forming mold body, and the forming quality of workpieces is guaranteed. And the position deviation state of the upper forming mold body can be detected, and an alarm is given in time when the position deviates.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts molding, in particular to a molding die and a molding method for automobile parts processing. Background Art

[0002] Auto parts are the various units that make up the whole car and a kind of workpiece that serves the car. When processing auto parts, the upper mold and the lower mold are usually used to form the auto parts. The forming molds for processing auto parts include hot stamping forming molds and cold stamping forming molds;

[0003] Existing forming dies for automobile parts processing, such as CN213223956U, a hot stamping forming die for automobile parts, have the following problems:

[0004] 1. The upper die seat and the lower die seat are connected to the punch press and are used to guide the clamping process of the forming die body (corresponding to the punch and the concave die in CN213223956U). Each forming die body needs to be equipped with an upper die seat and a lower die seat, which increases the cost;

[0005] 2. The mold base lacks a device for spraying fluid for cooling or dust removal, and does not have the effect of automatically spraying fluid for cooling or dust removal, which easily affects the quality of the workpiece after molding;

[0006] 3. There is a lack of relevant devices to detect the relative positions of the upper die base and the lower die base, which affects the reliability of molding. Summary of the invention

[0007] The present invention provides a molding die and a molding method for processing automobile parts, which are used to solve any one of the technical problems raised by the above-mentioned background technology.

[0008] In order to solve the above technical problems, the present invention discloses a forming die for processing automobile parts, comprising:

[0009] A lower die base, the upper end of which is detachably provided with a lower forming die body;

[0010] A plurality of groups of vertical guide rods, wherein the lower parts of the plurality of groups of vertical guide rods are respectively connected to the upper periphery of the lower die seat;

[0011] An upper die seat, wherein a plurality of vertical through holes are arranged on the upper die seat, and the plurality of vertical through holes are used for a plurality of groups of vertical guide rods to slide through in a one-to-one correspondence;

[0012] The first connecting device is used to detachably connect the upper molding die body to the lower part of the upper die seat.

[0013] Preferably, the first connecting device comprises:

[0014] Two groups of first fixing blocks, the two groups of first fixing blocks are fixedly connected to the upper end of the upper molding die body at intervals on the left and right, and the first fixing blocks are detachably connected to the lower end of the upper die base;

[0015] A first connecting block is also fixedly connected to the front and rear of the upper end of the upper molding die body;

[0016] The second connecting block is fixedly connected to the front and rear sides of the upper mold base respectively, and the first connecting block is detachably connected to the second connecting block on the corresponding side.

[0017] Preferably, the lower part of the vertical guide rod is arranged as a threaded section, and the threaded section is threadedly connected to the lower die seat;

[0018] The sides of the lower die seat and the upper die seat are both connected with a horizontal rod body, one end of the horizontal rod body is fixedly connected to the side of the lower die seat or the side of the upper die seat, and the other end of the horizontal rod body is provided with a limit head.

[0019] Preferably, it further comprises: a buffer device, the buffer device comprising two groups of buffer components spaced apart from each other, the lower molding die body and the upper molding die body are both located between the two groups of buffer components, and the buffer components comprise:

[0020] Two sets of third connection blocks, the two sets of third connection blocks are respectively connected to the front and rear sides of the upper die base; the fixed ends of the two sets of vertical telescopic rods are respectively fixedly connected to the two sets of third connection blocks;

[0021] An upper pressing block connected to the telescopic ends of the lower parts of the two sets of vertical telescopic rods;

[0022] A lower pressing block, which is arranged directly below the upper pressing block;

[0023] Two groups of elastic support components, the lower ends of the two groups of elastic support components are connected to the upper end of the lower die base at intervals, and the upper ends of the two groups of elastic support components are connected to the lower end of the lower pressing block.

[0024] Preferably, at least one lower pressing block is provided with a fluid channel 1 inside, and a nozzle 1 is provided on one side of the lower pressing block provided with the fluid channel 1 close to the lower molding die body along the left-right direction, the nozzle 1 is connected with the fluid channel 1, one side of the lower die seat is connected with a fluid inlet pipe, a first control valve is provided on the fluid inlet pipe, the outlet of the fluid inlet pipe is connected with the fluid channel 1 through a hose 1, the fluid inlet pipe is connected with the outlet of the three-way pipe, the inlet 1 of the three-way pipe is connected with the first inlet pipe, the first inlet pipe is connected with a cleaning fluid source, and the first inlet pipe is connected with a second control valve; the inlet 2 of the three-way pipe is connected with the second inlet pipe, the second inlet pipe is connected with a cooling fluid source, and the second inlet pipe is connected with a third control valve;

[0025] At least one upper pressing block is provided with a second fluid channel inside, and a second nozzle is provided on one side of the upper pressing block provided with the second fluid channel close to the upper molding die body along the left-right direction, the second nozzle is connected with the second fluid channel, and the inlet of the second fluid channel is connected with the first inlet pipe near the outlet through the second hose;

[0026] The nozzle 1 is used for spraying fluid to remove dust from the surface of the lower molding die body or to cool at least one of the lower molding die body, the upper molding die body and the molded workpiece;

[0027] At least one lower pressing block has a plurality of grooves arranged horizontally at intervals on the upper end, a force sensor is embedded in the lower end of the groove, and a plurality of convex columns corresponding to the plurality of grooves are arranged at the lower end of the upper pressing block corresponding to the lower pressing block having the grooves.

[0028] The present invention also discloses a method for molding an automobile part, which is performed by using the molding die for processing an automobile part. The molding method comprises:

[0029] Step S1: Connecting a molding die for automobile parts processing to a molding device;

[0030] Step S2: Control the first control valve and the second control valve to open, so that the first nozzle sprays the cleaning fluid to clean the surface of the lower molding die body, and the second nozzle sprays the cleaning fluid to clean the surface of the upper molding die body, and then close the first control valve after the cleaning is completed;

[0031] Step S3: placing the workpiece into the lower molding die body;

[0032] Step S4: Control the upper molding die body and the lower molding die body to close the mold, so that the workpiece is formed;

[0033] Step S5: Control the upper molding die body to reset and open the die.

[0034] Preferably, the molding die for automobile parts processing further comprises: a control device, an alarm device, and a timer, wherein the control device is electrically connected to the force sensor and the alarm device respectively; the timer counts the time from when the upper molding die body starts to move downward to when the upper molding die body and the lower molding die body open during the molding process of a single workpiece, and the timer returns to zero after the molding of a single workpiece is completed;

[0035] Also included between step S1 and step S2 is: step S10: obtaining a standard force variation curve in a first target period during the process of combining the current type upper molding die body and the current type lower molding die body to produce a single current type workpiece; the initial time of the first target period is the moment when the force sensor detection value is equal to the first preset value during the molding process of the single workpiece; the end time of the first target period is the moment when the upper molding die body and the lower molding die body are opened during the molding process of the single workpiece; the horizontal axis of the standard force variation curve is the detection value of the timer, and the vertical axis is the detection value of the force sensor;

[0036] During step S4, the force sensor is always controlled to work, and the actual detection value of each force sensor at the actual first moment is determined. The actual first moment is the moment when the actual detection value of any force sensor is equal to the first preset value. When the actual detection value of any force sensor at the actual first moment is not the first preset value, the first alarm in the alarm device is controlled to alarm; when the actual first moment is not the horizontal coordinate corresponding to the first preset value in the standard force change curve, the second alarm in the alarm device is controlled to alarm; when the first alarm and the second alarm do not alarm, the actual force change curve in the first target time period is also obtained during step S4, and the actual force change curve in the first target time period is divided into a number of first sub-curve segments, and the standard force change curve in the first target time period is divided into a number of second sub-curve segments, and the number of second sub-curve segments correspond to the number of first sub-curve segments one by one, and the corresponding second sub-curve segments have the same horizontal coordinate as the first sub-curve segments, and the actual similarity between the first sub-curve segment and the second sub-curve segment is obtained. When the actual similarity is less than the preset similarity, the third alarm in the alarm device is controlled to alarm.

[0037] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] In the present invention, the upper die seat is connected to the punch press machine head, the lower die seat is connected to the punch press work table, and the vertical guide rod is used for guiding the upper forming die body and the lower forming die body during the forming process of the workpiece. In the present invention, when the upper forming die body and the lower forming die body need to be replaced, it is only necessary to disassemble the upper forming die body and the lower forming die body from the upper die seat and the lower die seat respectively and then replace them. In the present invention, the upper die seat and the lower die seat are not fixedly arranged on each forming die body (composed of the upper forming die body and the lower forming die body), thereby reducing the cost;

[0040] In the first connecting device, after the first connecting block and the second connecting block are connected, a primary connection in the front-to-back direction of the upper mold base and the upper molding mold body is realized. The first fixed block is connected to the lower end of the upper mold base to realize a secondary connection in the up-and-down direction of the upper mold base and the upper molding mold body, thereby ensuring the connection reliability of the upper mold base and the upper molding mold body.

[0041] In the present invention, the elastic support assembly can be used to buffer the upper molding die body;

[0042] The first control valve and the second control valve can be periodically controlled to open, so that the first nozzle sprays the cleaning fluid to clean the surface of the lower molding die body, and the second nozzle sprays the cleaning fluid to clean the surface of the upper molding die body, thereby ensuring the molding quality of the workpiece;

[0043] When it is necessary to use nozzle 1 to spray cooling fluid to cool at least one of the lower molding die body, the upper molding die body, and the molded workpiece, the upper molding die body is controlled to be close to the lower molding die body but not molded with the lower molding die body, the second control valve is controlled to be closed, and the third control valve and the first control valve are controlled to be opened, so that nozzle 1 sprays cooling fluid to cool the position that needs cooling, thereby ensuring the accuracy and life of the mold and the quality of the molded workpiece. After the upper mold base moves downward until the upper pressure block contacts the lower pressure block, the upper mold base continues to move downward and drives nozzle 1 to move downward through the upper pressure block. When the lower molding die body and the upper molding die body are close to the mold closing position, nozzle 1 approaches the contact surface of the lower molding die body and the upper molding die body in the up and down directions, which can facilitate the simultaneous cooling of the lower molding die body and the upper molding die body, and the vertical telescopic rod can be set as an electric telescopic rod to adjust the spray fluid range of nozzle 1;

[0044] In the present invention, a distance sensor may be provided on the punch head to detect the distance in the up-down direction between the position of the distance sensor and the fixed point on the punch;

[0045] In the process of the upper molding die body moving downward to the upper molding die body and the lower molding die body being molded together, before the upper molding die body contacts the workpiece, the convex column first contacts the force sensor so that the force sensor detection value is greater than the target position, and the first difference absolute value between each force sensor detection value and the corresponding force sensor standard detection value is obtained (based on a preset distance sensor detection value-force sensor standard detection value mapping table; the distance sensor detection value-force sensor standard detection value mapping table can be obtained based on testing). When any of the first difference absolute values ​​is greater than, it indicates that the position of the upper molding die body is offset (such as due to an abnormal connection between the upper mold base and the machine head on the punch press or an abnormal connection between the upper molding die body and the upper mold base). At this time, an early warning is issued, and the offset state (offset direction) of the upper molding die body is determined based on the distribution of the first difference absolute values ​​of each force sensor, and the position of the upper molding die body is adjusted according to the offset state of the upper molding die body, thereby ensuring the molding quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0047] Figure 1 It is a structural schematic diagram of the present invention;

[0048] Figure 2 It is a schematic structural diagram of the elastic support assembly of the present invention;

[0049] Figure 3 It is a schematic diagram of the internal structure of the lower pressing block of the present invention.

[0050] In the figure: 1. lower die seat; 2. lower forming die body; 3. vertical guide rod; 31. threaded section; 4. upper die seat; 41. vertical through hole; 5. first connecting device; 51. first fixing block; 52. first connecting block; 53. second connecting block; 6. horizontal rod body; 7. limit head; 8. buffer assembly; 81. third connecting block; 82. vertical telescopic rod; 83. upper pressure block; 84. lower pressure block; 85. elastic support assembly; 851. vertical inner rod body; 852. vertical outer rod body; 853. elastic support component; 854. vertical slide groove; 9. fluid inlet pipe; 10. first control valve; 11. three-way pipe; 12. upper forming die body; 13. hose one; 14. fluid channel one; 15. nozzle one; 16. first inlet pipe; 17. second inlet pipe; 18. groove; 19. convex column. DETAILED DESCRIPTION

[0051] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0052] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0053] The present invention provides the following embodiments

[0054] Embodiment 1, the embodiment of the present invention provides a molding die for processing automobile parts, such as Figure 1-Figure 3 As shown, including:

[0055] A lower die base 1, the upper end of which is detachably provided with a lower forming die body 2;

[0056] A plurality of groups of vertical guide rods 3, wherein the lower parts of the plurality of groups of vertical guide rods 3 are respectively connected to the upper periphery of the lower die base 1;

[0057] An upper die base 4 is provided with a plurality of vertical through holes 41, and the plurality of vertical through holes 41 are used for a plurality of groups of vertical guide rods 3 to slide through in a one-to-one correspondence;

[0058] The first connecting device 5 , the upper molding die body 12 is detachably connected to the lower part of the upper die base 4 through the first connecting device 5 .

[0059] Preferably, the first connecting device 5 comprises:

[0060] Two groups of first fixing blocks 51, the two groups of first fixing blocks 51 are fixedly connected to the upper end of the upper molding die body 12 at intervals, and the first fixing blocks 51 are detachably connected to the lower end of the upper die base 4;

[0061] A first connecting block 52 is also fixedly connected to the front and rear of the upper end of the upper molding die body 12;

[0062] The second connecting block 53 is fixedly connected to the front and rear sides of the upper mold base 4, and the first connecting block 52 is detachably connected to the second connecting block 53 on the corresponding side.

[0063] Preferably, the lower part of the vertical guide rod 3 is provided with a threaded section 31, and the threaded section 31 is threadedly connected with the lower die base 1;

[0064] The sides of the lower die base 1 and the upper die base 4 are both connected with a horizontal rod body 6 , one end of the horizontal rod body 6 is fixedly connected to the side of the lower die base 1 or the side of the upper die base 4 , and the other end of the horizontal rod body 6 is provided with a limit head 7 .

[0065] The upper molding die body 12 and the lower molding die body 2 may also be provided with the horizontal rod body 6 and the limit head of the present invention;

[0066] The upper molding die body 12 and the lower molding die body 2 of the present invention can be the upper die (such as the convex die in CN213223956U) and the lower die (such as the concave die in CN213223956U) of the existing hot stamping molding die or the upper die and the lower die of the cold stamping molding die;

[0067] The present invention Figure 1 In the figure, the upper molding die body 12 and the lower molding die body 2 do not illustrate the appearance or internal structure of a specific molding die, and do not specifically refer to a molding die with a specific structure;

[0068] The above-mentioned detachable connection can adopt existing detachable connection methods, such as bolt connection;

[0069] The working principle and beneficial effects of the above technical solution are:

[0070] In the present invention, the upper die base 4 is connected to the head of the punch press, the lower die base 1 is connected to the worktable of the punch press, and the vertical guide rod 3 is used for guiding the upper molding die body 12 and the lower molding die body 2 during the molding process of the workpiece. In the present invention, when the upper molding die body 12 and the lower molding die body 2 need to be replaced, it is only necessary to disassemble the upper molding die body 12 and the lower molding die body 2 from the upper die base 4 and the lower die base 1 respectively and then replace them. In the present invention, the upper die base 4 and the lower die base 1 are not fixedly arranged on each molding die body (composed of the upper molding die body 12 and the lower molding die body 2), thereby reducing the cost;

[0071] The horizontal rod body 6 can be used to connect with the lifting device during the lifting process of the upper die base 4 and the lower die base 1 of the present invention;

[0072] In the first connecting device 5, the first connecting block 52 and the second connecting block 53 are connected to realize the primary connection of the upper mold base 4 and the upper molding mold body 12 in the front-to-back direction, and the first fixing block 51 is connected to the lower end of the upper mold base 4 to realize the secondary connection of the upper mold base 4 and the upper molding mold body 12 in the up-down direction, thereby ensuring the connection reliability of the upper mold base 4 and the upper molding mold body 12.

[0073] Embodiment 2, on the basis of embodiment 1, as Figure 1-Figure 3As shown, it also includes: a buffer device, the buffer device includes two groups of buffer components 8 spaced apart from each other, the lower molding die body 2 and the upper molding die body 12 are both located between the two groups of buffer components 8, and the buffer component 8 includes:

[0074] Two sets of third connecting blocks 81, the two sets of third connecting blocks 81 are respectively connected to the front and rear sides of the upper die base 4;

[0075] Two groups of vertical telescopic rods 82, the fixed ends of the two groups of vertical telescopic rods 82 are respectively fixedly connected to the two groups of third connecting blocks 81;

[0076] An upper pressing block 83, the upper pressing block 83 is connected to the telescopic ends of the lower parts of the two sets of vertical telescopic rods 82;

[0077] The lower pressing block 84 is correspondingly arranged directly below the upper pressing block 83;

[0078] Two groups of elastic support components 85 , the lower ends of the two groups of elastic support components 85 are connected to the upper end of the lower mold base 1 at a front-to-back interval, and the upper ends of the two groups of elastic support components 85 are connected to the lower end of the lower pressing block 84 .

[0079] Preferably, at least one of the lower pressing blocks 84 is provided with a fluid channel 14, and a nozzle 15 is provided on one side of the lower pressing block 84 provided with the fluid channel 14 close to the lower molding die body 2 along the left-right direction, and the nozzle 15 is connected to the fluid channel 14, and one side of the lower die base 1 is connected to a fluid inlet pipe 9, and a first control valve 10 is provided on the fluid inlet pipe 9, and the outlet of the fluid inlet pipe 9 is connected to the fluid channel 14 through a hose 13, and the fluid inlet pipe 9 is connected to the outlet of the three-way pipe 11, and the inlet 1 of the three-way pipe 11 is connected to the first inlet pipe 16, and the first inlet pipe 16 is connected to the cleaning fluid source, and the first inlet pipe 16 is connected to the second control valve; the inlet 2 of the three-way pipe 11 is connected to the second inlet pipe 17, and the second inlet pipe 17 is connected to the cooling fluid source, and the second inlet pipe 17 is connected to the third control valve; in the present invention, the cleaning fluid source can be water or compressed air, and the cooling fluid source can be cooling water or cooled air;

[0080] The nozzle 15 is used to spray fluid to remove dust from the surface of the lower molding die body 2 or to cool at least one of the lower molding die body 2, the upper molding die body 12, and the molded workpiece;

[0081] At least one upper pressing block 83 is provided with a second fluid channel inside, and a second nozzle is provided on one side of the upper pressing block 83 provided with the second fluid channel close to the upper molding die body 12 along the left-right direction, and the second nozzle is connected with the second fluid channel, and the inlet of the second fluid channel is connected with the first inlet pipe 16 near the outlet through the second hose; the inlet of the second fluid channel can be provided with a connecting pipe, and the connecting pipe is connected with the outlet of the second hose, and a fourth control valve is provided on the connecting pipe; the structures of the second fluid channel and the second nozzle can refer to the first fluid channel 14 and the first nozzle 15;

[0082] A plurality of grooves 18 are horizontally spaced apart at the upper end of at least one lower pressing block 84 , a force sensor is embedded in the lower end of the groove 18 , and a plurality of convex columns 19 corresponding to the plurality of grooves 18 are disposed at the lower end of the upper pressing block 83 corresponding to the lower pressing block 84 having the grooves 18 .

[0083] The elastic support assembly 85 includes: a vertical inner rod body 851 and a vertical outer rod body 852. A vertical slide groove 854 is arranged in the vertical outer rod body 852. The lower part of the vertical inner rod body 851 is slidably connected in the vertical slide groove 854 of the vertical outer rod body 852 along the up-down direction. The upper end of the vertical inner rod body 851 is fixedly connected to the lower pressing block 84. The lower end of the vertical outer rod body 852 is fixedly connected to the upper end of the lower die base 1. An elastic support component 853 is arranged between the lower end of the vertical inner rod body 851 and the inner wall of the lower end of the vertical slide groove 854. The elastic support component 853 can be a spring.

[0084] When the upper molding die body 12 and the lower molding die body 2 of the present invention are cold stamping molding dies, when the upper molding die body 12 and the lower molding die body 2 heat up during operation (such as heating up due to friction or heating up due to heat transfer with a high-temperature workpiece) and need to be cooled down, the nozzle 15 and the nozzle 2 of the present invention can be used to spray cooling fluid to cool down the upper molding die body 12 and the lower molding die body 2, so as to maintain the accuracy of the upper molding die body 12 and the lower molding die body 2 and extend the service life of the upper molding die body 12 and the lower molding die body 2;

[0085] A method for molding an automobile part, using the above-mentioned molding die for processing an automobile part to perform molding, the molding method comprising:

[0086] Step S1: Connecting a molding die for automobile parts processing to a molding device;

[0087] Step S2: Control the first control valve 10 and the second control valve to open, so that the nozzle 1 15 sprays the cleaning fluid to clean the surface of the lower molding die body 2, and the nozzle 2 sprays the cleaning fluid to clean the surface of the upper molding die body 12, and then close the first control valve 10 after the cleaning is completed;

[0088] Step S3: placing the workpiece into the lower molding die body 2;

[0089] Step S4: Control the upper molding die body 12 and the lower molding die body 2 to close the mold, so that the workpiece is formed;

[0090] Step S5: Control the upper molding die body 12 to reset and open the die.

[0091] Step S5 also includes: in the process of controlling the upper molding die body 12 to reset, when it is necessary to use a nozzle (specifically nozzle 1 15 and / or nozzle 2) to spray cooling fluid to cool at least one of the lower molding die body 2, the upper molding die body 12, and the molded workpiece, the upper molding die body 12 is controlled to move up to a position where the upper molding die body 12 and the lower molding die body 2 are just opened a certain distance, the second control valve is controlled to be closed, and the third control valve and the first control valve 10 are controlled to be opened, so that at least one of the nozzles 15 and the nozzles 2 sprays cooling fluid to cool the position that needs cooling.

[0092] The working principle and beneficial effects of the above technical solution are:

[0093] In the present invention, the elastic support assembly 85 can be used to buffer the upper molding die body 12;

[0094] The first control valve 10 and the second control valve can be periodically controlled to open, so that the nozzle 15 sprays the cleaning fluid to clean the surface of the lower molding die body 2, and the nozzle 2 sprays the cleaning fluid to clean the surface of the upper molding die body 12, thereby ensuring the molding quality of the workpiece;

[0095] When it is necessary to use the nozzle 15 to spray cooling fluid to cool at least one of the lower molding die body 2, the upper molding die body 12, and the molded workpiece, the upper molding die body 12 is controlled to be close to the lower molding die body 2 but not molded with the lower molding die body 2, the second control valve is controlled to be closed, and the third control valve and the first control valve 10 are controlled to be opened, so that the nozzle 15 sprays cooling fluid to cool the position that needs cooling, thereby ensuring the accuracy and life of the mold and the quality of the molded workpiece. After the upper mold base 4 moves downward until the upper pressing block 83 contacts the lower pressing block 84, the upper mold base 4 continues to move downward and drives the nozzle 15 to move downward through the upper pressing block 83. When the lower molding die body 2 and the upper molding die body 12 are close to the mold closing position, the nozzle 15 approaches the contact surface of the lower molding die body 2 and the upper molding die body 12 in the vertical direction, which can facilitate the simultaneous cooling of the lower molding die body 2 and the upper molding die body 12, and the vertical telescopic rod 82 can be set as an electric telescopic rod to adjust the fluid spraying range of the nozzle 15;

[0096] In the present invention, a distance sensor may be provided on the punch head to detect the distance in the up-down direction between the position of the distance sensor and the fixed point on the punch;

[0097] In the process of the upper molding die body 12 moving downward to the upper molding die body 12 and the lower molding die body 2 being molded together, before the upper molding die body 12 contacts the workpiece, the boss 19 first contacts the force sensor to make the force sensor detection value greater than the target position of 0, and obtains the first difference absolute value between each force sensor detection value and the corresponding force sensor standard detection value (based on a preset distance sensor detection value-force sensor standard detection value mapping table; the distance sensor detection value-force sensor standard detection value mapping table can be obtained based on testing). When any of the first difference absolute values ​​is greater than 0, it indicates that the position of the upper molding die body 12 is offset (for example, due to an abnormal connection between the upper die base 4 and the head of the punch press or an abnormal connection between the upper molding die body 12 and the upper die base 4). At this time, an early warning is issued, and the offset state (offset direction) of the upper molding die body 12 is determined based on the distribution of the first difference absolute values ​​of each force sensor, and the position of the upper molding die body 12 is adjusted according to the offset state of the upper molding die body 12, thereby ensuring the molding quality of the workpiece.

[0098] Embodiment 3, on the basis of embodiment 2, the molding die for automobile parts processing further comprises: a control device, an alarm device, and a timer, wherein the control device is electrically connected to the force sensor and the alarm device respectively; the timer counts the time from the beginning of the downward movement of the upper molding die body 12 to the opening of the upper molding die body 12 and the lower molding die body 2 during the molding process of a single workpiece, and the timer is reset to zero after the molding of a single workpiece is completed;

[0099] Also included between step S1 and step S2 is: step S10: obtaining a standard force variation curve in a first target period during the process of the current type upper molding die body 12 and the current type lower molding die body 2 being molded together to produce a single current type workpiece; the initial time of the first target period is the moment when the force sensor detection value is equal to the first preset value (a positive number close to 0, which can be 0.3N) during the molding process of a single workpiece; the end time of the first target period is the moment when the upper molding die body 12 and the lower molding die body 2 are opened during the molding process of a single workpiece; the horizontal axis of the standard force variation curve is the detection value of the timer, and the vertical axis is the detection value of the force sensor;

[0100] During step S4, the force sensor is always controlled to work, and the actual detection value of each force sensor at the actual first moment is determined. The actual first moment is the moment when the actual detection value of any force sensor is equal to the first preset value. When the actual detection value of any force sensor at the actual first moment is not the first preset value, the first alarm in the alarm device is controlled to alarm; when the actual first moment is not the horizontal coordinate corresponding to the first preset value in the standard force change curve, the second alarm in the alarm device is controlled to alarm; when the first alarm and the second alarm do not alarm, the actual force change curve in the first target time period is also obtained during step S4, and the actual force change curve in the first target time period is divided into a number of first sub-curve segments, and the standard force change curve in the first target time period is divided into a number of second sub-curve segments, and the number of second sub-curve segments correspond to the number of first sub-curve segments one by one, and the corresponding second sub-curve segments have the same horizontal coordinate as the first sub-curve segments, and the actual similarity between the first sub-curve segment and the second sub-curve segment is obtained. When the actual similarity is less than the preset similarity, the third alarm in the alarm device is controlled to alarm.

[0101] The beneficial effects of the above technical solution are as follows: the first alarm indicates that the position of the upper molding die body 12 is abnormal when it moves down to the actual first moment (for example, due to an abnormal connection between the upper die seat 4 and the punch head or an abnormal connection between the upper molding die body 12 and the upper die seat 4), and reminds that the position of the upper molding die body 12 needs to be adjusted;

[0102] The second alarm sounds, reminding that when the punch press head descends to the actual first moment, the actual descending speed of the upper molding die body 12 may be abnormal compared with the theoretical descending speed, and the punch press head needs to be repaired;

[0103] The third alarm sounds, indicating that the actual descent speed of the upper molding die body 12 in the first target period may be abnormal compared to the theoretical descent speed, such as due to the abnormal quality of the lower molding die body 2, the upper molding die body 12 or the head of the punch press, and the lower molding die body 2, the upper molding die body 12 or the head of the punch press needs to be repaired. If only the actual similarity of the first sub-curve segment and the second sub-curve segment corresponding to the time from the contact moment of the upper molding die body 12 with the workpiece to the time when the upper molding die body 12 and the lower molding die body 2 are opened is less than the preset similarity, then the reliability of reminding the lower molding die body 2 and the upper molding die body 12 to be abnormal in quality is greater, and the lower molding die body 2 and the upper molding die body 12 are checked first.

[0104] Embodiment 4, based on embodiment 3, further includes between step S1 and step S2:

[0105] Step S11: Obtain standard working parameters in the process of combining the current type upper molding die body 12 and the current type lower molding die body 2 to produce a single current type workpiece, the standard working parameters including: when the current type upper molding die body 12 contacts the upper end of the current type workpiece, the standard distance between the lower end of the current type upper molding die body 12 and the upper end of the lower die base 1 ; The standard minimum distance between the lower end of the upper molding die body 12 and the upper end of the lower die base 1 of the current type The force sensor detection value is equal to the first preset value at the moment when the current type of upper molding mold body 12 is the standard distance from the lower end of the lower mold base 1 The first target descending speed of the upper molding die body 12 is the moment when the upper molding die body 12 of the current type contacts the upper end of the current type of workpiece and the actual distance between the lower end of the upper molding die body 12 of the current type and the upper end of the lower mold base 1 is the minimum distance between the lower end of the upper molding die body 12 of the current type and the upper end of the lower mold base 1. ;

[0106] Step S12: Based on step S11, calculate the second target descending speed of the upper molding die body 12 during the process of combining the current type of upper molding die body 12 with the current type of lower molding die body 2 to produce a single current type of workpiece: from the moment when the upper molding die body 12 descends to the moment when the actual detection value of the force sensor is equal to the first preset value ;

[0107] ;

[0108] The maximum value of the standard allowable acceleration range of the upper molding die body 12 during step S4 of the process of the current type upper molding die body 12 and the current type lower molding die body 2 being molded together to produce a single current type workpiece, from the moment when the actual detection value is equal to the first preset value to the moment when the current type upper molding die body 12 contacts the upper end of the current type workpiece; is a natural constant;

[0109] During step S4 of the process in which the current type upper molding die body 12 and the current type lower molding die body 2 are molded together to produce a single current type workpiece, the upper molding die body 12 is controlled to descend according to the first target descending speed and the second target descending speed.

[0110] The beneficial effect of the above technical solution is that during the process of the current type upper molding die body 12 and the current type lower molding die body 2 being molded together to produce a single current type workpiece: during the time when the upper molding die body 12 descends to the time when the actual detection value of the force sensor is equal to the first preset value, the second target descending speed of the upper molding die body 12 is Value less than First, use V to implement the position abnormality assessment of the upper molding die body 12 of the above-mentioned embodiment 3 to avoid the situation where the position of the upper molding die body 12 is abnormal and the current type of the upper molding die body 12 descends at a high speed, which is prone to danger.

[0111] Embodiment 5, on the basis of embodiment 1, when the upper molding die body 12 and the lower molding die body 2 need to be cooled by arranging a circulating cooling water pipe, the molding surfaces of the upper molding die body 12 and the lower molding die body 2 are used as horizontal planes to divide the upper molding die body 12 and the lower molding die body 2 into a plurality of cooling areas at horizontal intervals, and a group of circulating cooling water pipes are arranged in the middle of the thickness direction of the upper molding die body 12 and the lower molding die body 2 corresponding to each cooling area, and the water inlet of the circulating cooling water pipe is connected to the fourth control valve, and the water inlet of the circulating cooling water pipe is connected to the cooling water source through a pipeline; the cooling water source may include a cooling water tank, and the water outlet of the circulating cooling water pipe is connected to the water return port of the cooling water tank through a water outlet pipe, and the cooling water tank is provided with a cooling device;

[0112] Before batch forming the current type of workpieces with the current type upper forming mold body 12 and the current type lower forming mold body 2, first obtain the standard parameters for forming the current type of workpieces with the current type upper forming mold body 12 and the current type lower forming mold body 2, the standard parameters include: standard mold temperature range and standard cooling water parameters, the standard cooling water parameters include: standard cooling water flow rate and standard cooling water temperature;

[0113] The step S4 of forming each current type of workpiece in the process of batch forming the current type of workpieces with the current type upper forming mold body 12 and the current type lower forming mold body 2 comprises:

[0114] Step S41: Control the current type of upper molding die body 12 and the current type of lower molding die body 2 to close the mold, so that the current type of workpiece is formed; and obtain the temperature detection value of the temperature detection point of each cooling area of ​​the upper molding die body 12 and the lower molding die body 2 multiple times during the closing process. When the temperature detection value of any temperature detection point is not within the standard mold temperature range, Within, the fourth alarm is used to give an early warning;

[0115] Step S42: determining the approaching mold temperature limit of each temperature detection point in each cooling zone and the final approaching mold temperature limit of each cooling zone in step S41 for molding each current type of workpiece with the current type upper molding mold body 12 and the current type lower molding mold body 2;

[0116] when ,but The corresponding temperature detection point approaches the mold temperature limit: ; is the average value of all the detection values ​​of the jth temperature detection point in the i-th cooling area in the step S41 of molding the current type of workpiece with the current type of upper molding mold body 12 and the current type of lower molding mold body 2;

[0117] ;

[0118] The approaching mold temperature limit of the i-th cooling zone is The total number of temperature detection points; The approaching mold temperature limit of the i-th cooling zone is The total number of temperature detection points; The final approach to the mold temperature limit of the i-th cooling zone in the step S41 of molding the current type of workpiece with the current type upper molding mold body 12 and the current type lower molding mold body 2 for the current time;

[0119] When the fourth alarm does not issue an early warning, the first temperature state value of each cooling area in the step S41 of forming the current type of workpiece with the current type upper molding mold body 12 and the current type lower molding mold body 2 is calculated based on the temperature detection value of the temperature detection point, when the first temperature state value of any cooling area is less than the preset reference temperature state value , control the fifth alarm to sound an alarm, and determine that the first temperature state value of the cooling area is less than the preset reference temperature state value The cooling area is the cooling area to be adjusted;

[0120] ;

[0121] is the first temperature state value of the i-th cooling area in step S41 of molding the current type of workpiece with the current type upper molding die body 12 and the current type lower molding die body 2; In the step S41 of forming the current type of workpiece with the current type upper forming mold body 12 and the current type lower forming mold body 2, the approaching mold temperature limit of the i-th cooling zone is The total number of temperature detection points; In the step S41 of forming the current type of workpiece with the current type upper forming mold body 12 and the current type lower forming mold body 2, the approaching mold temperature limit of the i-th cooling zone is The average detection value of the rth temperature detection point;

[0122] When the fifth alarm sounds an alarm, the following steps S43 to S46 are executed:

[0123] Step S43: Calculating, based on step S42, a second temperature state value of the cooling area to be adjusted during the current process of forming the current type of workpiece with the current type of upper forming mold body 12 and the current type of lower forming mold body 2;

[0124] ;

[0125] is the second temperature state value of the hth cooling area to be adjusted in the step S41 of forming the current type of workpiece with the current type upper forming mold body 12 and the current type lower forming mold body 2 for the current time; is the first temperature state value of the hth cooling area to be adjusted in the step S41 of forming the current type of workpiece with the current type upper forming mold body 12 and the current type lower forming mold body 2 for the current time; is the total number of adjacent cooling areas of the hth cooling area to be adjusted; is the first temperature state value of the kth adjacent cooling area of ​​the hth cooling area to be adjusted in the step S41 of forming the current type of workpiece with the current type upper forming mold body 12 and the current type lower forming mold body 2 at the current time; is the temperature direction consistency evaluation coefficient. In the step S41 of forming the current type of workpiece with the current type upper molding mold body 12 and the current type lower molding mold body 2, the hth cooling area to be adjusted and the kth adjacent cooling area of ​​the hth cooling area to be adjusted are consistent in the final approaching mold temperature limit. The value is 1, otherwise, The value is -1; , They are the first temperature evaluation weight and the second temperature evaluation weight (both are greater than 0 and less than 1, and can be 0.85 and 0.15 respectively);

[0126] Step S44: obtaining the historical first temperature state value of the cooling area to be adjusted in step S41 of the latest M times before the current time when the current type upper molding die body 12 and the current type lower molding die body 2 molded each current type of workpiece;

[0127] Step S45: calculating a third temperature state value of the cooling area to be adjusted based on the temperature detection value obtained in step S44;

[0128] ;

[0129] The sth historical first temperature state value of the hth cooling area to be adjusted obtained in step S44; is the s+1th historical first temperature state value of the hth cooling area to be adjusted obtained in step S44; max represents the maximum value; is the preset reference temperature state value; is the third temperature state value of the hth cooling area to be adjusted; To obtain The history of step S41 and the acquisition The flow time of water in the hth cooling area to be adjusted between the historical steps S41;

[0130] Step S46: Calculate the target flow rate of the cooling area to be adjusted based on steps S43 and S44;

[0131] ;

[0132] is the actual flow rate of the hth cooling area to be adjusted during the process of molding the current type of workpiece with the current type upper molding die body 12 and the current type lower molding die body 2; is the target flow rate of the hth cooling area to be adjusted; is the decay rate of the first temperature state value of the standard mold in the cooling area (with The units are the same, only the natural heat transfer state attenuation of the mold is considered, which can be obtained based on the test);

[0133] Control the process of forming each current type of workpiece with the current type upper molding die body 12 and the current type lower molding die body 2 for N times after the current time: the actual flow rate in the circulating cooling pipe in the cooling area to be adjusted is the target flow rate of the cooling area to be adjusted. The environmental heat dissipation effect affecting the mold in the process of forming each current type of workpiece with the current type upper molding die body 12 and the current type lower molding die body 2 for N times after the current time is close to the process of forming the current type of workpiece with the current type upper molding die body 12 and the current type lower molding die body 2 for the current time;

[0134] The beneficial effects of the above technical solution are:

[0135] Some upper molding die bodies 12 and lower molding die bodies 2 need to maintain a standard mold temperature range during molding, so as to ensure the precision and life of the mold and the quality of the workpiece after molding;

[0136] Due to the long-term use of the upper molding die body 12 and the lower molding die body 2, their heat exchange performance changes or the ambient temperature changes greatly, resulting in the temperature of the cooling area of ​​the upper molding die body 12 and the lower molding die body 2 changing in step S41, which may be closer to the upper limit or lower limit of the standard mold temperature range. At this time, if the flow rate of the circulating cooling water pipe is not adjusted (which can be adjusted based on the fourth control valve), the upper molding die body 12 and the lower molding die body 2 may continue to be used. The temperature of the cooling area of ​​the upper molding die body 12 and the lower molding die body 2 may exceed the standard mold temperature range;

[0137] Step S42: Determine the mold temperature limit approaching each temperature detection point in each cooling zone and the final mold temperature limit approaching each cooling zone in step S41 for molding each current type of workpiece with the current type upper molding mold body 12 and the current type lower molding mold body 2; then select the actual detection temperature of the temperature detection point of the cooling zone approaching the final mold temperature limit of the cooling zone to obtain the first temperature state value of each cooling zone in step S41 for molding the current type of workpiece with the current type upper molding mold body 12 and the current type lower molding mold body 2, and determine that the first temperature state value of the cooling zone is less than the preset reference temperature state value The cooling area is the cooling area to be adjusted; then step S43 determines the second temperature state value of the cooling area to be adjusted after considering the influence of the adjacent cooling area of ​​the cooling area to be adjusted based on the first temperature state value of the adjacent cooling area of ​​the cooling area to be adjusted;

[0138] Step S43 obtains the historical first temperature state value of the cooling area to be adjusted in step S41 of the latest M times before the current time when the current type upper molding die body 12 and the current type lower molding die body 2 mold each current type workpiece, and calculates the third temperature state value of the cooling area to be adjusted (corresponding to the change rate state of the historical first temperature state value);

[0139] Finally, based on the second temperature state value of the cooling area to be adjusted and the third temperature state value of the cooling area (corresponding to the historical first temperature state value change rate state) after considering the influence of the adjacent cooling area to be adjusted, the target flow rate of the cooling area to be adjusted is calculated, and the process of forming each current type of workpiece with the current type upper forming mold body 12 and the current type lower forming mold body 2 for N times after the current time is controlled: the actual flow rate in the circulating cooling pipe in the cooling area to be adjusted is the target flow rate of the cooling area to be adjusted, thereby ensuring that the temperature of the upper forming mold body 12 and the current type lower forming mold body 2 of each current type of workpiece formed with the current type upper forming mold body 12 and the current type lower forming mold body 2 for N times after the current time meets the standard mold temperature range, thereby ensuring the accuracy and life of the mold and the quality of the workpiece after the molding.

[0140] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A molding die for automobile parts processing, characterized in that: include: A lower die base (1), the upper end of which is detachably provided with a lower molding die body (2); A plurality of groups of vertical guide rods (3), wherein the lower parts of the plurality of groups of vertical guide rods (3) are respectively connected to the upper periphery of the lower die base (1); An upper die seat (4), wherein a plurality of vertical through holes (41) are arranged on the upper die seat (4), and the plurality of vertical through holes (41) are used for a plurality of groups of vertical guide rods (3) to slide through in a one-to-one correspondence; A first connecting device (5), the upper molding die body (12) is detachably connected to the lower part of the upper die seat (4) via the first connecting device (5).

2. The molding die for automobile parts processing according to claim 1, characterized in that: The first connecting device (5) comprises: Two groups of first fixing blocks (51), the two groups of first fixing blocks (51) are fixedly connected to the upper end of the upper molding die body (12) at intervals on the left and right, and the first fixing blocks (51) are detachably connected to the lower end of the upper die base (4); A first connecting block (52), the front and rear parts of the upper end of the upper molding die body (12) are also fixedly connected with the first connecting block (52); The second connecting block (53) is fixedly connected to the front and rear sides of the upper mold base (4), respectively, and the first connecting block (52) is detachably connected to the second connecting block (53) on the corresponding side.

3. The molding die for automobile parts processing according to claim 1, characterized in that: The lower part of the vertical guide rod (3) is provided with a threaded section (31), and the threaded section (31) is threadedly connected to the lower die base (1).

4. The molding die for automobile parts processing according to claim 1, characterized in that: Also includes: A buffer device, the buffer device comprising two groups of buffer components (8) spaced apart from each other, the lower molding die body (2) and the upper molding die body (12) being located between the two groups of buffer components (8), the buffer component (8) comprising: Two groups of third connection blocks (81), the two groups of third connection blocks (81) are respectively connected to the front and rear sides of the upper mold base (4); the fixed ends of the two groups of vertical telescopic rods (82) are respectively fixedly connected to the two groups of third connection blocks (81); An upper pressing block (83), the upper pressing block (83) being connected to the telescopic ends of the lower parts of the two sets of vertical telescopic rods (82); A lower pressing block (84), the lower pressing block (84) is correspondingly arranged directly below the upper pressing block (83); Two groups of elastic support components (85), the lower ends of the two groups of elastic support components (85) are connected to the upper end of the lower die base (1) at a front-to-back interval, and the upper ends of the two groups of elastic support components (85) are connected to the lower end of the lower pressing block (84).

5. The molding die for automobile parts processing according to claim 4, characterized in that: A fluid channel (14) is provided inside at least one lower pressing block (84), and a nozzle (15) is provided on one side of the lower pressing block (84) provided with the fluid channel (14) close to the lower molding die body (2) along the left-right direction, the nozzle (15) is connected to the fluid channel (14), one side of the lower die base (1) is connected to a fluid inlet pipe (9), a first control valve (10) is provided on the fluid inlet pipe (9), the outlet of the fluid inlet pipe (9) is connected to the fluid channel (14) through a hose (13), the fluid inlet pipe (9) is connected to the outlet of the three-way pipe (11), the inlet of the three-way pipe (11) is connected to the first inlet pipe (16), the first inlet pipe (16) is connected to a cleaning fluid source, and the first inlet pipe (16) is connected to a second control valve; the inlet of the three-way pipe (11) is connected to a second inlet pipe (17), the second inlet pipe (17) is connected to a cooling fluid source, and the second inlet pipe (17) is connected to a third control valve; At least one upper pressing block (83) is provided with a second fluid channel inside, and a second nozzle is provided on one side of the upper pressing block (83) provided with the second fluid channel close to the upper molding die body (12) in the left-right direction, the second nozzle is connected to the second fluid channel, and the inlet of the second fluid channel is connected to the first inlet pipe (16) close to the outlet through the second hose; The nozzle 1 (15) is used to spray a fluid to remove dust from the surface of the lower molding die body (2) or to cool at least one of the lower molding die body (2), the upper molding die body (12), and the molded workpiece; A plurality of grooves (18) are horizontally spaced apart on the upper end of at least one lower pressing block (84), a force sensor is embedded in the lower end of the groove (18), and a plurality of convex columns (19) corresponding to the plurality of grooves (18) are disposed on the lower end of the upper pressing block (83) corresponding to the lower pressing block (84) provided with the grooves (18).

6. A method for molding an automobile part, using a molding die for processing an automobile part as claimed in any one of claims 1 to 5, characterized in that: Molding methods include: Step S1: Connecting a molding die for automobile parts processing to a molding device; Step S2: Control the first control valve (10) and the second control valve to open, so that the nozzle 1 (15) sprays the cleaning fluid to clean the surface of the lower molding die body (2), and the nozzle 2 sprays the cleaning fluid to clean the surface of the upper molding die body (12), and then closes the first control valve (10) after the cleaning is completed; Step S3: placing the workpiece into the lower molding die body (2); Step S4: controlling the upper molding die body (12) and the lower molding die body (2) to close the mold, so that the workpiece is formed; Step S5: Control the upper molding die body (12) to reset and open the die.

7. The method for forming an automobile part according to claim 6, characterized in that: The molding die for processing automobile parts also includes: a control device, an alarm device, and a timer, wherein the control device is electrically connected to the force sensor and the alarm device respectively; the timer counts the time from the beginning of the downward movement of the upper molding die body (12) to the opening of the upper molding die body (12) and the lower molding die body (2) during the molding process of a single workpiece, and the timer is reset to zero after the molding of the single workpiece is completed; The method further includes the following between step S1 and step S2: step S10: obtaining a standard force variation curve within a first target period during the process of combining the current type upper molding die body (12) and the current type lower molding die body (2) to produce a single current type workpiece; the initial time of the first target period is the moment when the force sensor detection value is equal to the first preset value during the molding process of the single workpiece; the end time of the first target period is the moment when the upper molding die body (12) and the lower molding die body (2) are opened during the molding process of the single workpiece; the horizontal axis of the standard force variation curve is the detection value of the timer, and the vertical axis is the detection value of the force sensor; During step S4, the force sensor is always controlled to work, and the actual detection value of each force sensor at the actual first moment is determined. The actual first moment is the moment when the actual detection value of any force sensor is equal to the first preset value. When the actual detection value of any force sensor at the actual first moment is not the first preset value, the first alarm in the alarm device is controlled to alarm; when the actual first moment is not the horizontal coordinate corresponding to the first preset value in the standard force change curve, the second alarm in the alarm device is controlled to alarm; when the first alarm and the second alarm do not alarm, the actual force change curve in the first target time period is also obtained during step S4, and the actual force change curve in the first target time period is divided into a number of first sub-curve segments, and the standard force change curve in the first target time period is divided into a number of second sub-curve segments, and the number of second sub-curve segments correspond to the number of first sub-curve segments one by one, and the corresponding second sub-curve segments have the same horizontal coordinate as the first sub-curve segments, and the actual similarity between the first sub-curve segment and the second sub-curve segment is obtained. When the actual similarity is less than the preset similarity, the third alarm in the alarm device is controlled to alarm.

8. The method for forming an automobile part according to claim 7, characterized in that: The method further includes the following steps between step S1 and step S2: Step S11: obtaining standard working parameters of the current type upper molding die body (12) and the current type lower molding die body (2) in the process of mold-joining to produce a single current type workpiece, the standard working parameters including: when the current type upper molding die body (12) contacts the upper end of the current type workpiece, the standard distance between the lower end of the current type upper molding die body (12) and the upper end of the lower die base (1) ; The standard minimum distance between the lower end of the upper molding die body (12) and the upper end of the lower die base (1) of the current type The force sensor detection value is equal to the first preset value at the moment when the current type of the lower end of the upper molding mold body (12) is the standard distance from the upper end of the lower mold base (1). The first target descending speed of the upper molding die body (12) is from the moment when the upper molding die body (12) of the current type contacts the upper end of the current type of workpiece to the moment when the actual distance between the lower end of the upper molding die body (12) of the current type and the upper end of the lower mold base (1) is the minimum distance between the lower end of the upper molding die body (12) of the current type and the upper end of the lower mold base (1). ; Step S12: Based on step S11, calculate the second target descending speed of the upper molding die body (12) during the process of the upper molding die body (12) of the current type and the lower molding die body (2) of the current type to produce a single workpiece of the current type: from the moment when the upper molding die body (12) descends to the moment when the actual detection value of the force sensor is equal to the first preset value ; ； The maximum value of the standard allowable acceleration range of the upper molding die body (12) during step S4 of the process of combining the current type upper molding die body (12) and the current type lower molding die body (2) to produce a single current type workpiece, from the moment when the actual detection value is equal to the first preset value to the moment when the current type upper molding die body (12) contacts the upper end of the current type workpiece; is a natural constant; During step S4 of the process of combining the current type upper molding die body (12) with the current type lower molding die body (2) to produce a single current type workpiece, the upper molding die body (12) is controlled to descend according to the first target descent speed and the second target descent speed.

9. The method for forming an automobile part according to claim 6, characterized in that: When the upper molding die body (12) and the lower molding die body (2) need to be cooled by arranging circulating cooling water pipes, the molding surfaces of the upper molding die body (12) and the lower molding die body (2) are used as horizontal planes to divide the upper molding die body (12) and the lower molding die body (2) into a plurality of horizontally spaced cooling areas, and a group of circulating cooling water pipes is arranged in the middle of the thickness direction of the upper molding die body (12) and the lower molding die body (2) corresponding to each cooling area, and the water inlet of the circulating cooling water pipe is connected to a fourth control valve, and the water inlet of the circulating cooling water pipe is connected to a cooling water source through a pipeline; Before batch molding the current type of workpieces with the current type upper molding mold body (12) and the current type lower molding mold body (2), first obtain standard parameters for molding the current type of workpieces with the current type upper molding mold body (12) and the current type lower molding mold body (2), the standard parameters include: standard mold temperature range and standard cooling water parameters, the standard cooling water parameters include: standard cooling water flow rate and standard cooling water temperature.

10. The method for forming an automobile part according to claim 9, characterized in that: The step S4 of forming each current type of workpiece in the process of batch forming the current type of workpieces with the current type upper forming mold body (12) and the current type lower forming mold body (2) comprises: Step S41: Control the current type of upper molding die body (12) and the current type of lower molding die body (2) to close the mold, so that the current type of workpiece is formed; and during the closing process, the temperature detection value of the temperature detection point of each cooling area of ​​the upper molding die body (12) and the lower molding die body (2) is obtained multiple times. When the temperature detection value of any temperature detection point is not within the standard mold temperature range, Within, the fourth alarm is used to give an early warning; Step S42: determining the approaching mold temperature limit of each temperature detection point in each cooling zone and the final approaching mold temperature limit of each cooling zone in step S41 for molding each current type of workpiece with the current type upper molding mold body (12) and the current type lower molding mold body (2); when ,but The corresponding temperature detection point approaches the mold temperature limit: ; is the average value of all the detection values ​​of the jth temperature detection point in the i-th cooling area in the step S41 of molding the current type of workpiece with the current type of upper molding mold body (12) and the current type of lower molding mold body (2); ； The approaching mold temperature limit of the i-th cooling zone is The total number of temperature detection points; The approaching mold temperature limit of the i-th cooling zone is The total number of temperature detection points; The final approach to the mold temperature limit of the i-th cooling zone in the step S41 of molding the current type of workpiece with the current type upper molding mold body (12) and the current type lower molding mold body (2); When the fourth alarm does not issue an early warning, the first temperature state value of each cooling area in the step S41 of molding the current type of workpiece with the current type upper molding mold body (12) and the current type lower molding mold body (2) is calculated based on the temperature detection value of the temperature detection point, when the first temperature state value of any cooling area is less than the preset reference temperature state value , control the fifth alarm to sound an alarm, and determine that the first temperature state value of the cooling area is less than the preset reference temperature state value The cooling area is the cooling area to be adjusted; When the fifth alarm sounds an alarm, the following steps S43 to S46 are executed: Step S43: based on step S42, calculating the second temperature state value of the cooling area to be adjusted during the process of molding the current type of workpiece with the current type of upper molding die body (12) and the current type of lower molding die body (2); Step S44: obtaining the historical first temperature state value of the cooling area to be adjusted in step S41 of the latest M times before the current time when the upper molding die body (12) of the current type and the lower molding die body (2) of the current type molded each workpiece of the current type; Step S45: calculating a third temperature state value of the cooling area to be adjusted based on the temperature detection value obtained in step S44; Step S46: Calculate the target flow rate of the cooling area to be adjusted based on steps S43 and S44; In the process of controlling the current type upper molding die body (12) and the current type lower molding die body (2) to mold each current type workpiece N times after the current time: the actual flow rate in the circulating cooling pipe in the cooling area to be adjusted is the target flow rate of the cooling area to be adjusted.

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