Intelligent stamping device and control method

Abstract

This invention relates to the field of metal can stamping technology, and more particularly to an intelligent stamping equipment and control method. The equipment includes a stamping body and a controller, as well as a first pressure measuring module, a second pressure measuring module, and a stamping assembly. The stamping assembly includes a lower die, a movable die cavity, and an upper punch. The lower die has a die groove, and the movable die cavity is slidably connected to the die groove. The lower die, in conjunction with the first pressure measuring module, detects whether the stamping force on the workpiece is uniform. The movable die cavity, in conjunction with the second pressure measuring module, detects whether the stamping of the workpiece has been completed. This invention, through the movable lower die and movable die cavity, can cooperate with the first and second pressure measuring modules to detect pressure under different conditions, thereby determining the stamping status of the workpiece and solving the problem that existing stamping equipment is inconvenient for detecting the status of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of metal can stamping technology, and in particular to an intelligent stamping equipment and control method. Background Technology

[0002] Stamping equipment is a type of mechanical equipment used to process materials such as sheet metal. It shapes the sheet metal into the desired form by applying pressure. In a metal stamping apparatus, the shapes of the upper and lower dies determine the shape of the workpiece to be stamped. The dies generally include an upper die and a lower die. By installing the upper and lower dies on the stamping equipment and connecting them to the hydraulic cylinders of the stamping equipment, the normal operation of the dies is ensured.

[0003] Metal stamping is widely used in various industries. In the stamping process of the bottom of a metal can, the prepared mold is first installed on the stamping equipment, and then the metal sheet, such as aluminum alloy or other non-ferrous metal, is placed on the lower mold. Then, the hydraulic cylinder is activated to stamp the metal sheet. By using the combined action of the mold and the hydraulic cylinder, the metal sheet undergoes plastic deformation, thereby obtaining the desired can-shaped product.

[0004] However, when metal sheets are stamped into can-shaped products on the market, although the workpiece can be stamped according to the set pressure value, there is a certain error in the actual operation process when the control system controls the mold head to output pressure. This results in the workpiece being processed with insufficient pressure and incomplete stamping, thus producing unqualified workpieces.

[0005] Furthermore, in the can-making process, metal sheets are generally used to form can-shaped products. During the processing of can-shaped products, a punch inserts the metal sheet into a recessed mold to produce the can shape. Therefore, it is possible that when the stamping reaches a certain level, the pressure has reached the preset value of the surrounding pressure sensing element. The preset value refers to a pre-set pressure value that indicates that the processing pressure is appropriate and the product has been successfully formed. However, because the upper part of the metal sheet is stuck between the die and the punch, the pressure has caused the surrounding sensing element to incorrectly judge that the product has reached the qualified level, resulting in a misjudgment. This leads to the product being processed into a semi-finished product, making further processing impossible and resulting in a decrease in the yield rate.

[0006] Furthermore, after the workpiece is processed into a semi-finished product, the system's sensing element sends a signal to the control system, causing the system to misjudge and stop processing. This results in changes in the stress of the metal sheet, making it impossible to continue processing. Otherwise, it is easy to break in the middle or have cracks. After processing, it still cannot be put into use, leading to an increase in production costs.

[0007] Meanwhile, when the control system malfunctions, causing excessive stamping pressure, it can easily lead to the direct scrapping of the workpiece, increasing production costs. It can also aggravate mold wear or even cause direct damage, resulting in a sharp increase in the company's production costs and a decrease in yield. Therefore, it is necessary to set up a stamping component that can supplement the pressure when it is insufficient, and can displace the workpiece and the lower mold when the pressure is too high and exceeds the mold's load-bearing capacity, thereby avoiding accidents, in order to protect the stamping equipment. Summary of the Invention

[0008] The purpose of this invention is to provide an intelligent stamping equipment and control method, which solves the problems of incomplete stamping and inability to effectively detect various situations in existing stamping equipment.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] An intelligent stamping machine includes a stamping machine body and a controller, and further includes:

[0011] The system comprises a first pressure measuring module, a second pressure measuring module, and a stamping assembly. The stamping assembly includes a lower die, a movable die cavity, and an upper punch. The lower die has a die groove, and the movable die cavity is slidably connected to the die groove. The lower die cooperates with the first pressure measuring module to detect whether the stamping force on the workpiece to be stamped is uniform. The movable die cavity cooperates with the second pressure measuring module to detect whether the stamping of the workpiece to be stamped is completed.

[0012] Preferably, the first pressure measuring module includes a plurality of first hydraulic columns disposed on the body of the stamping equipment, and each of the first hydraulic columns is provided with a first pressure sensor for detecting the pressure it receives.

[0013] Preferably, the second pressure measuring module includes a second hydraulic column disposed on the body of the stamping equipment, and each of the second hydraulic columns is provided with a second pressure sensor for detecting the pressure it receives.

[0014] Preferably, a movable column is slidably provided on the upper end of the second hydraulic column, and the upper end of the movable column is fixedly connected to the movable die.

[0015] Preferably, both the first pressure sensor and the second pressure sensor are electrically connected to the controller.

[0016] A control method for an intelligent stamping equipment includes: when the upper punch stamps the workpiece to be stamped on the lower die, determining whether the position of the workpiece to be stamped is appropriate based on whether the pressures on the four first hydraulic columns are balanced; when the pressures on the four first pressure sensors are the same, the pressing continues; when the pressures on the first pressure sensors on the four first hydraulic columns are different, the position of the workpiece to be stamped is inappropriate. At this time, the first pressure sensors send a signal to the controller, causing the controller to control the upper punch to stop stamping and move the upper punch upward to remove the scrap.

[0017] Preferably, during the downward punching process of the upper punch, it is detected whether the pressure received by the first pressure sensor on the first hydraulic column is the same. If so, the downward pressure continues. If not, the upper punch is controlled to move upward by the controller to remove the waste material. This process detects whether the workpiece to be punched shifts during the punching process.

[0018] Preferably, when the pressure received by the first pressure sensor on the first hydraulic column reaches a preset value, it is determined whether the pressure received by the second pressure sensor on the second hydraulic column reaches a preset value. If the preset value is not reached, the controller needs to control the upper punch to continue pressing down.

[0019] Preferably, when the pressure on the second pressure sensor reaches a preset value, the pressure on the first pressure sensor also reaches a preset value at the same time. The controller then controls the upper punch to stop pressing down and moves the upper punch upward, transferring the qualified workpiece to the next step.

[0020] Preferably, when the pressure received by the second pressure sensor exceeds a preset value, the controller controls the upper punch to immediately stop moving downward and move upward, while simultaneously shutting down the stamping equipment body, removing the scrap material, checking the wear of the upper punch, lower die, and moving die, and checking whether the stamping equipment is malfunctioning, to prevent over-stamping of subsequent workpieces due to equipment malfunction.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. By arranging a first hydraulic column and a first pressure sensor around the lower die, the pressure during stamping can be detected. Only when the pressure of the upper stamping hydraulic cylinder and the lower first hydraulic column both reach the corresponding pressure values ​​can the first pressure sensor send a signal to the controller. This reduces the possibility of errors in the control system's control of the die head's pressure output, which could lead to insufficient pressure during workpiece processing and result in defective workpieces. This improves the yield rate in actual production and reduces production costs.

[0023] 2. The second hydraulic column and the second pressure sensor can cooperate with the first hydraulic column and the first pressure sensor. Only when both the first hydraulic column and the second hydraulic column reach the preset value can a signal be sent to the controller, so that the controller controls the upper punch to stop punching and move upward to the initial position.

[0024] 3. It avoids misjudgment when the workpiece to be stamped is stuck between the upper punch and the mold groove, thereby improving the yield rate during production and reducing the probability of defective or semi-finished products. At the same time, the sealed cavity and compressible gas can push the canned product out of the mold groove by the expansion of the compressible gas after processing and when the moving die is no longer under pressure. This makes it easier to collect and transport the product.

[0025] 4. The first and second hydraulic columns are engaged with the lower mold and the moving die. Compared with a fixed working platform, it is easier to detect pressure changes, thereby making correct and timely judgments, so that the controller can perform corresponding control operations.

[0026] 5. By judging different situations and controlling them based on the judgment results, the number of items that need to be inspected after stamping can products is reduced, and subsequent operation steps are reduced. At the same time, by grasping and judging the process, it is possible to screen out whether there are still usable workpieces to be stamped during the initial stamping and whether to directly remove the waste material, thereby reducing material waste when the pressure is not qualified when the upper punch and lower die make initial contact.

[0027] 6. By directly inspecting the workpiece in the initial step, processing is prevented from being stopped when the workpiece cannot be processed into a finished product. This avoids wasting subsequent processing time, improves processing efficiency, reduces mold wear during ineffective processing, and increases the effective service life of the mold. It prevents both under-stamping and over-stamping, and avoids the situation where the equipment cannot be shut down in time, which would lead to a large increase in over-stamped can products. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the process of the present invention.

[0030] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 3 This is a full sectional view of the overall structure of the present invention.

[0032] Figure 4 This is a schematic diagram of the full cross-sectional structure of the lower mold in this invention.

[0033] Figure 5 This is a schematic diagram of the full cross-sectional structure of the lower mold and the movable die in this invention.

[0034] Figure 6 This is a cross-sectional view of the second hydraulic column in this invention when it is without pressure.

[0035] Figure 7 This is a cross-sectional view showing insufficient pressure in the first hydraulic column of the present invention.

[0036] Figure 8 This is a cross-sectional view showing the second hydraulic column pressure reaching a preset value in this invention.

[0037] Figure 9 This is a full cross-sectional view of the first hydraulic column and the first pressure sensor in this invention.

[0038] In the diagram: 1. Stamping equipment body; 2. First pressure measuring module; 201. First hydraulic column; 202. First pressure sensor; 3. Second pressure measuring module; 301. Second hydraulic column; 302. Second pressure sensor; 4. Stamping assembly; 401. Lower die; 402. Moving die; 403. Die groove; 404. Upper punch; 405. Moving column; 5. Controller. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0040] Currently, when metal sheets are stamped into can-shaped products, although the workpiece can be stamped according to the set pressure value, there is a certain error in the actual operation process when the control system controls the mold head to output pressure. This results in the workpiece being processed with insufficient pressure, leading to unqualified workpieces.

[0041] To solve the above-mentioned technical problems, refer to the accompanying drawings in the specification. Figures 1 to 9As shown, the technical solution adopted is an intelligent stamping equipment, including a stamping equipment body 1 and a controller 5, as well as a first pressure measuring module 2 and a stamping assembly 4. The stamping assembly 4 includes a lower die 401, a movable die 402 and an upper punch 404. The lower die 401 has a die groove 403. The movable die 402 is slidably connected to the die groove 403. The lower die 401 cooperates with the first pressure measuring module 2 to detect whether the stamping force on the workpiece to be stamped is uniform. The first pressure measuring module 2 includes a plurality of first hydraulic columns 201 fixedly installed on the stamping equipment body 1. The plurality of first hydraulic columns 201 are fixedly connected to the lower die 401. Each first hydraulic column 201 is provided with a first pressure sensor 202 for detecting the pressure borne by the corresponding first hydraulic column 201. The first pressure sensor 202 is located between the lower die 401 and the corresponding first hydraulic column 201. The first pressure sensor 202 is electrically connected to the controller 5.

[0042] The upper part of the stamping equipment body 1 is equipped with a stamping hydraulic cylinder, which is assembled and used in conjunction with the upper punch 404. The stamping equipment body 1 is equipped with a hydraulic oil tank that is electrically connected to the controller 5. The hydraulic oil tank, the stamping hydraulic cylinder, the first hydraulic column 201, and the second hydraulic column 301 are all connected through a drain pipe and a proportional valve (not shown in the figure). The proportional valve is electrically connected to the controller 5, and this technology is existing technology and will not be described in detail here.

[0043] When stamping the workpiece, the stamping equipment body 1 is started, the controller 5 is started, and the stamping hydraulic cylinder and the pressure of the first hydraulic column 201 after the workpiece is stamped to pass the test are pre-input into the controller 5. These are referred to as preset values. The hydraulic oil tank delivers hydraulic oil to the stamping hydraulic cylinder through the corresponding proportional valve and drain pipe to achieve the stamping effect. The stamping hydraulic cylinder stamps the workpiece on the lower mold 401 through the upper punch 404.

[0044] The upper punch 404 deforms the workpiece to be stamped and inserts it into the mold groove 403. At this time, the pressure is detected by the first pressure sensor 202 and the first hydraulic column 201. When the pressure on the four first hydraulic columns 201 is within the same pressure range or the pressure is the same, the downward stamping continues.

[0045] When the pressure on the first hydraulic cylinder 201 and the first pressure sensor 202 reaches the preset value, and the bottom of the workpiece to be stamped contacts the moving die 402, the first pressure sensor 202 sends a signal to the controller 5, causing the controller 5 to control the hydraulic oil tank to draw hydraulic oil from the stamping hydraulic cylinder through the corresponding drain pipe and proportional valve, so that the stamping hydraulic cylinder drives the upper punch 404 to move upward to the initial position. During the upward movement of the upper punch 404, the processed can-shaped product is moved to the collection area, and a new workpiece to be stamped is placed on the lower die 401, and the above process is repeated.

[0046] By arranging a first hydraulic column 201 and a first pressure sensor 202 around the lower mold 401, the pressure during stamping can be detected. Only when the pressure of the upper stamping hydraulic cylinder and the lower first hydraulic column 201 both reach the corresponding pressure values ​​can a signal be sent to the controller 5 through the first pressure sensor 202. This reduces the possibility of errors in the control system when controlling the mold head to output pressure, which could lead to insufficient pressure during workpiece processing and result in unqualified workpieces. This improves the yield rate in actual production and reduces production costs. Example 2

[0047] In the can-making process, metal sheets are generally used to form can-shaped products. During processing, a punch inserts the metal sheet into a recessed mold to produce the can shape. However, there is a possibility that after stamping to a certain extent, the pressure has reached the preset value of the surrounding detection pressure. This preset value refers to a pre-set pressure value that indicates the processing pressure is appropriate and the product is qualified for forming. However, because the upper part of the metal sheet is stuck between the punch and the concave mold, the pressure has caused the surrounding detection elements to incorrectly judge that the product has reached the qualified level, resulting in a misjudgment. This leads to the product being processed into a semi-finished product, which cannot be further processed, resulting in a decrease in the yield rate.

[0048] To solve the above-mentioned technical problems, based on the first embodiment described above, and referring to the accompanying drawings, Figures 1 to 9 As shown, the technical solution adopted includes a second pressure measuring module 3. The movable die 402 cooperates with the second pressure measuring module 3 to detect whether the workpiece to be stamped has been stamped. The second pressure measuring module 3 includes a second hydraulic column 301 set on the stamping equipment body 1. Each second hydraulic column 301 is provided with a second pressure sensor 302 for detecting the pressure borne by the corresponding second hydraulic column 301. A movable column 405 is slidably provided on the upper end of the second hydraulic column 301. The upper end of the movable column 405 is fixedly connected to the movable die 402. The second pressure sensor 302 is electrically connected to the controller 5.

[0049] In practical use, the controller 5 controls the upper punch 404 to deform the workpiece to be stamped and insert it into the mold groove 403 and move it downward a certain distance. When the pressure on the four first hydraulic columns 201 is in the same pressure range or the pressure is the same, the upper punch 404 drives the workpiece to be stamped to contact the moving die 402 and continue to stamp downward.

[0050] Simultaneously, the movable die 402 moves downward along the mold groove 403, and the movable die 402 drives the movable column 405 to move downward. The end of the movable column 405 away from the movable die 402 forms a sealed cavity with the second hydraulic column 301. The sealed cavity is filled with compressible gas. When the movable column 405 moves downward, the gas in the sealed cavity is compressed, which is not shown in detail in the figure.

[0051] Only when the pressure on the second hydraulic column 301 and the second pressure sensor 302, as well as the pressure on the first hydraulic column 201 and the first pressure sensor 202, both reach preset values ​​can the first pressure sensor 202 and the second pressure sensor 302 send signals to the controller 5, so that the controller 5 controls the hydraulic oil tank to draw hydraulic oil from the stamping hydraulic cylinder through the corresponding drain pipe and proportional valve, so that the stamping hydraulic cylinder drives the upper punch 404 to move upward to the initial position.

[0052] As the upper punch 404 moves upward, the moving column 405 moves upward under the push of the compressible gas in the sealed cavity. The moving column 405 drives the moving die 402 to move upward and pushes the processed can-shaped product out of the mold groove 403. Then the product is moved to the collection area, and a new workpiece to be stamped is placed on the lower die 401. The above process is repeated.

[0053] The hydraulic oil tank, drain pipe, proportional valve, stamping hydraulic cylinder, upper punch 404 and controller 5 and their connection methods are all existing technologies and will not be described in detail here.

[0054] The second hydraulic column 301 and the second pressure sensor 302 work in conjunction with the first hydraulic column 201 and the first pressure sensor 202. Only when both the first hydraulic column 201 and the second hydraulic column 301 reach their preset values ​​can a signal be sent to the controller 5. This causes the controller 5 to control the upper punch 404 to stop punching and move upward to its initial position. This also prevents the workpiece from getting stuck between the upper punch 404 and the mold groove 403, which could lead to a misjudgment when the pressure on the first pressure sensor 202 reaches its preset value. This improves the yield rate during production and reduces the loss of quality. The probability of defective or semi-finished products is reduced. The sealed cavity and compressible gas are set up so that after processing, when the moving die 402 is no longer under pressure, the expansion of the compressible gas causes the moving column 405 to drive the moving die 402 to push the canned product out of the mold groove 403. This makes it easier to collect and transport the product. Moreover, by using the first hydraulic column 201 and the second hydraulic column 301 to cooperate with the lower die 401 and the moving die 402, it is easier to detect pressure changes compared to a fixed working platform, so as to make a quick, correct and timely judgment, thereby enabling the controller 5 to perform corresponding control operations. Example 3

[0055] Based on the above embodiments, this embodiment also provides a control method for intelligent stamping equipment, including:

[0056] When the stamping hydraulic cylinder drives the upper punch 404 to stamp the workpiece located on the lower die 401, the position of the workpiece is judged by whether the pressure on the four first hydraulic columns 201 is balanced. When the pressure of the four first pressure sensors 202 is the same, the downward pressure continues. When the pressure of the first pressure sensors 202 on the four first hydraulic columns 201 is different, the position of the workpiece is not suitable. At this time, the first pressure sensor 202 sends a signal to the controller 5, causing the controller 5 to control the upper punch 404 to stop stamping and move the upper punch 404 upward to remove the scrap. During the downward stamping process of the stamping hydraulic cylinder driving the upper punch 404, the pressure on the first pressure sensors 202 on the first hydraulic columns 201 is detected to be the same. If they are the same, the downward pressure continues. If not, the controller 5 controls the upper punch 404 to move upward to remove the scrap. This process detects the stamping pressure. During the process, it is observed whether the workpiece to be stamped shifts. When the pressure on the first pressure sensor 202 on the first hydraulic column 201 reaches the preset value, it is determined whether the pressure on the second pressure sensor 302 on the second hydraulic column 301 reaches the preset value. If the preset value is not reached, the controller 5 needs to control the upper punch 404 to continue pressing down. When the pressure on the second pressure sensor 302 reaches the preset value, the pressure on the first pressure sensor 202 also reaches the preset value, causing the controller 5 to control the upper punch 404 to stop pressing down. The controller 5 then controls the upper punch 404 to move upward, transferring the qualified workpiece to the next step. When the pressure on the second pressure sensor 302 exceeds the preset value, the controller 5 controls the upper punch 404 to immediately stop moving down and move upward. At the same time, the stamping equipment body 1 is shut down, the scrap is removed, and the wear of the upper punch 404, the lower die 401, and the moving die 402 is checked.

[0057] Initially, the pressure values ​​of the first hydraulic column 201 and the second hydraulic column 301 need to be set, referred to as preset values, and the preset values ​​are input into the controller 5. The number of the first hydraulic column 201 is set to four. The stamping value of the upper punch 404 is set in advance. The workpiece to be stamped is placed on the lower die 401, and then the stamping equipment body 1 is run. The controller 5 controls the upper punch 404 to stamp the workpiece to be stamped.

[0058] When the upper punch 404 contacts the workpiece to be stamped, the pressure of the upper punch 404 is transmitted to the four first hydraulic columns 201 through the lower die 401. The pressure received by the first pressure sensor 202 on the four first hydraulic columns 201 is determined by whether the pressure is the same or within the same range. This pressure range is the pressure fluctuation range that ensures the workpiece to be stamped can become a qualified product after stamping. In this process, the pressure received by the first pressure sensor 202 sends a signal to the controller 5, which is then judged by the controller 5.

[0059] If yes, the controller 5 continues to control the upper punch 404 to continue punching the workpiece. If no, the controller 5 controls the upper punch 404 to move upward and reset to the initial position before stopping. The controller then checks whether there are any external damages or other damages that could impair the workpiece's processing. If no damages are found, the controller adjusts the position of the workpiece to be punched to a suitable position and then controls the upper punch 404 to punch the workpiece again. This process can determine whether the placement of the workpiece to be punched can produce a qualified workpiece. If so, a new workpiece to be punched is placed in a suitable position for punching.

[0060] This process is used to determine whether there is a large deviation in the placement of the workpiece to be stamped. If there is a large deviation, it will cause uneven pressure on the lower die 401, which will result in uneven force on the first pressure sensor 202 on the four first hydraulic columns 201, and then make a corresponding judgment.

[0061] Refer to the attached diagram in the instruction manual. Figure 6 As shown, after the previous process is completed, when the upper punch 404 presses the workpiece to be stamped to a certain extent, it determines whether the pressure of the four first hydraulic columns 201 is the same or within the same range by judging the pressure received by the four first pressure sensors 202. This pressure range is the pressure fluctuation range that ensures the workpiece to be stamped is a qualified product after stamping. If it is, the stamping continues; if not, the stamping stops, and the controller 5 controls the upper punch 404 to move upward to the initial position, remove the workpiece to be stamped, and place a new workpiece to be stamped.

[0062] This process determines whether the workpiece to be stamped has shifted during the stamping process. If it has shifted, the outer edge of the upper punch 404 will not be in uniform contact with the workpiece, resulting in uneven pressure exerted by the upper punch 404 on the die groove 403 through the workpiece. This causes a large difference in force around the lower die 401, resulting in different pressures on the four first hydraulic columns 201 or pressure ranges not being in the same range, thus producing defective workpieces with uneven thickness around the edges.

[0063] Before the four first hydraulic cylinders 201 reach their preset values, they continue to press down while their pressures remain within the same range. When the preset values ​​of the four first pressure sensors 202 are reached, it is determined whether there is pressure on the second pressure sensor 302 on the second hydraulic cylinder 301. This process involves transmitting the pressure received by the second pressure sensor 302 to the controller 5, which then makes a judgment. If pressure is present, it is determined whether the pressure received by both the second pressure sensor 302 and the first pressure sensor 202 is the preset value. If it is the preset value, then refer to... Figure 8 When the position shown is reached, the stamping of the upper punch 404 is stopped, and the upper punch 404 is reset upward to its initial position.

[0064] If there is no pressure or the pressure is less than the preset value, refer to the attached diagram in the instruction manual. Figure 6 and Figure 7 As shown, the controller 5 controls the upper punch 404 to continue pressing downwards. The upper punch 404 drives the moving die 402 to move downwards through the workpiece to be pressed. The moving die 402 drives the moving column 405 to slide on the second hydraulic column 301 until the moving die 402 contacts the upper end of the second hydraulic column 301. When the pressure generated by the moving die 402 on the second hydraulic column 301 reaches the preset value set by the second hydraulic column 301, the upper punch 404 stops pressing downwards and returns to the initial position. The qualified workpiece is taken out, and a new pressurized workpiece is placed again. The above pressing and judgment process is repeated, which avoids the need to re-inspect the can products and affect the sale of the products.

[0065] When the pressure received by the second pressure sensor 302 and the first pressure sensor 202 exceeds the preset value, the controller 5 controls the upper punch 404 to immediately stop moving downward and move upward. The process of controlling the upper punch 404 is the same as described in Embodiments 1 and 2 above, and will not be described in detail here. At the same time, the stamping equipment body 1 is shut down, the scrap is removed, and the wear of the upper punch 404, the lower die 401 and the moving die 402 is checked. This process is used to prevent the upper punch 404, the lower die 401 and the moving die 402 from being over-stamped due to the malfunction of the hydraulic system.

[0066] The stamping equipment body 1, the first pressure sensor 202, the first hydraulic column 201, the second hydraulic column 301, the second pressure sensor 302, the upper punch 404, and the controller 5, as well as their connection methods, are all existing technologies and will not be described in detail here.

[0067] By judging different situations and controlling according to the judgment results, the number of items that need to be inspected after stamping is reduced, and subsequent operation steps are reduced. At the same time, through the above steps, it is possible to screen out whether there are still usable workpieces to be stamped during the initial stamping and whether to directly remove waste material. This reduces material waste when the pressure is not qualified when the upper punch 404 and lower die 401 make initial contact. In addition, direct inspection of workpieces in the initial step avoids the waste of subsequent processing time, improves processing efficiency, reduces the occurrence of die wear during ineffective processing, and increases the effective service life of the die. This prevents both under-stamping and over-stamping, and avoids the situation where the equipment cannot be shut down in time, resulting in a large increase in over-stamped can products.

[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A control method for an intelligent stamping equipment, comprising a stamping equipment body and a controller, characterized in that, Also includes: The system comprises a first pressure measuring module, a second pressure measuring module, and a stamping assembly. The stamping assembly includes a lower die, a movable die cavity, and an upper punch. The lower die has a die groove, and the movable die cavity is slidably connected to the die groove. The lower die cooperates with the first pressure measuring module to detect whether the stamping force on the workpiece to be stamped is uniform. The movable die cavity cooperates with the second pressure measuring module to detect whether the stamping of the workpiece to be stamped is completed. The first pressure measuring module includes a plurality of first hydraulic columns disposed on the body of the stamping equipment, and each of the first hydraulic columns is provided with a first pressure sensor for detecting the pressure it receives; The second pressure measuring module includes a second hydraulic column installed on the body of the stamping equipment, and each of the second hydraulic columns is equipped with a second pressure sensor for detecting the pressure it receives; When the upper punch presses the workpiece to be pressed on the lower die, the position of the workpiece to be pressed is judged by whether the pressure on the four first hydraulic columns is balanced. When the pressure of the four first pressure sensors is the same, the pressing continues. When the pressure on the first pressure sensors on the four first hydraulic columns is different, the position of the workpiece to be pressed is not appropriate. At this time, the first pressure sensor sends a signal to the controller, which controls the upper punch to stop pressing and moves the upper punch upward to remove the waste material. During the downward punching process, the pressure on the first pressure sensor on the first hydraulic column is checked to see if it is the same. If it is, the downward pressure continues. If not, the upper punch is controlled to move upward by the controller to remove the waste material. During this process, the workpiece to be punched is checked to see if it shifts. When the pressure on the first pressure sensor on the first hydraulic column reaches a preset value, it is determined whether the pressure on the second pressure sensor on the second hydraulic column reaches a preset value. If the preset value is not reached, the controller needs to control the upper punch to continue pressing down.

2. The control method for an intelligent stamping equipment according to claim 1, characterized in that, The upper end of the second hydraulic column is provided with a movable column, and the upper end of the movable column is fixedly connected to the movable die.

3. The control method for an intelligent stamping equipment according to claim 2, characterized in that, Both the first pressure sensor and the second pressure sensor are electrically connected to the controller.

4. The control method for an intelligent stamping equipment according to claim 3, characterized in that, When the pressure on the second pressure sensor reaches a preset value, the pressure on the first pressure sensor also reaches a preset value. The controller then controls the upper punch to stop pressing down and moves it upward, transferring the qualified workpiece to the next step.

5. The control method for an intelligent stamping equipment according to claim 4, characterized in that, When the pressure on the second pressure sensor exceeds the preset value, the controller immediately stops the upper punch from moving downward and moves it upward. At the same time, the stamping equipment body is shut down, the waste material is removed, and the wear of the upper punch, lower die, and moving die is detected.

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