Part shaping device and shaping control method

Abstract

The invention provides a part shaping device and a shaping control method, and relates to the technical field of die casting, the part shaping device comprises a first shaping pressing block, a second shaping pressing block, a heating piece, a driving mechanism, an image acquisition device and a control module; the first shaping pressing block and the second shaping pressing block are oppositely arranged, and the driving mechanism drives the first shaping pressing block to be close to the second shaping pressing block; a plurality of heating pieces are uniformly distributed on the first shaping pressing block and the second shaping pressing block; and the image acquisition equipment, the driving mechanism and the heating piece are electrically connected with the control module. The heating pieces at the contact point positions are firstly controlled to start heating, the multiple heating pieces are controlled to be heated in sequence in a layer-by-layer outward expansion mode, transverse extension or transverse stress generated in the shaping process of the to-be-pressed part is controlled, the shaped to-be-pressed part is not prone to deformation again due to internal residual stress, the shaping efficiency is high, and the shaping precision is high. The shaping standard is consistent, the quality is uniform, and the qualified rate of finished products is high.

Description

Technical Field

[0001] The present invention relates to the field of die casting technology, in particular to a part shaping device and a shaping control method. Background Art

[0002] Die casting is a process of injecting molten metal into a mold under high pressure to form a product, which is then cooled and solidified into a product. In order to improve the efficiency of die casting production, the parts are usually removed from the mold after the product is cooled and solidified, without waiting for the product temperature to completely cool to room temperature.

[0003] However, in the actual production process, when the product is taken out of the mold and cooled, some thin-walled parts will be deformed. For these deformed thin-walled parts, the existing method is to manually adjust them, such as manually knocking or squeezing the deformed position to correct the deformed product. However, the deformation position and deformation amount of thin-walled parts are not fixed, and the shape of each thin-walled product after deformation is inconsistent. Therefore, the efficiency of manual trimming is low, and the quality of the trimmed products is uneven, making it difficult to maintain a high product qualification rate. Summary of the invention

[0004] The problem to be solved by the present invention is that the work efficiency and product qualification rate are low when manually trimming deformed thin-walled parts after die casting.

[0005] To solve the above problems, in the first aspect, the present invention provides a part shaping device, including a first shaping block, a second shaping block, a heating element, a driving mechanism, an image acquisition device and a control module; the second shaping block and the second shaping block are arranged opposite to each other, and the surface of the first shaping block facing the second shaping block and the surface of the second shaping block facing the first shaping block are respectively consistent with the standard shapes of the two side surfaces of the part to be pressed, and are respectively used to fit the corresponding two side surfaces of the part to be pressed, and the driving mechanism is used to drive the first shaping block to approach the second shaping block. shaping block to press and shape the part to be pressed; a plurality of heating elements are distributed on the surface of the first shaping block facing the second shaping block and the surface of the second shaping block facing the first shaping block; the image acquisition device is used to acquire the bonding images of the two sides of the part to be pressed with the first shaping block and the second shaping block respectively; the image acquisition device, the driving mechanism and the heating element are all electrically connected to the control module, and the control module is used to obtain the bonding image uploaded by the image acquisition device and control the operation of the driving mechanism and the heating element.

[0006] Optionally, the driving mechanism includes a driving member, a guide cylinder, a piston rod, an elastic member and a pressure sensor; the driving member is connected to one end of the piston rod and is used to drive the other end of the piston rod to move in the guide cylinder, the guide cylinder is installed on the first shaping block, and the guide cylinder is provided with the pressure sensor installed on the first shaping block, the elastic member is arranged in the guide cylinder, and both ends of the elastic member are respectively connected to the other end of the piston rod and the pressure sensor; the pressure sensor is electrically connected to the control module.

[0007] Optionally, the image acquisition device includes a first image acquisition device and a second image acquisition device, the first image acquisition device and the second image acquisition device are respectively connected to the control module, the first image acquisition device and the second image acquisition device are respectively arranged on two adjacent sides of the first shaping block, and the lens centerline of the first image acquisition device and the lens centerline of the second image acquisition device are respectively perpendicular to the side surfaces of the two adjacent sides of the first shaping block.

[0008] Optionally, the part shaping device also includes a guide member, at least two of which are respectively installed at the two ends of the first shaping block, and guide grooves are provided at both ends of the second shaping block. The guide grooves correspond one-to-one to the guide members, and the guide members slide in and out of the corresponding guide grooves.

[0009] In a second aspect, the present invention provides a part shaping control method. Based on the part shaping device as described above, the part shaping control method comprises: Controlling the driving mechanism and the image acquisition device to work, so as to drive the first shaping pressing block to approach the second shaping pressing block, and obtaining the bonding image uploaded by the image acquisition device, wherein a part to be pressed is placed between the first shaping pressing block and the second shaping pressing block; When the first shaping pressing block starts to squeeze the part to be pressed, the driving mechanism is controlled to stop working; Determining the lamination ratio and contact points between the two sides of the part to be pressed and the first shaping block and the second shaping block, respectively, according to the lamination image; According to the contact points of the first shaping pressing block and the second shaping pressing block with the part to be pressed and the fitting ratio, the heating element and the driving mechanism are controlled to work in coordination to shape the part to be pressed.

[0010] Optionally, the image acquisition device includes a first image acquisition device and a second image acquisition device, the assembled image includes a first assembled image uploaded by the first image acquisition device and a second assembled image uploaded by the second image acquisition device, and the assembled ratio includes a first assembled ratio corresponding to the first assembled image and a second assembled ratio corresponding to the second assembled image; Determining the lamination ratio and contact points between the two sides of the part to be pressed and the first shaping block and the second shaping block according to the lamination image includes: In the first bonding image, a first bonding length between the part to be bonded and the first shaping block and a second bonding length between the part to be bonded and the second shaping block are identified; Obtaining the first bonding ratio according to the first bonding length, the second bonding length, and a first projection length of the part to be pressed in the first bonding image; In the second bonding image, a third bonding length between the part to be bonded and the first shaping block and a fourth bonding length between the part to be bonded and the second shaping block are identified; Obtaining the second bonding ratio according to the third bonding length, the fourth bonding length, and a second projection length of the part to be bonded in the second bonding image; In the first bonding image, determining a first contact point between the part to be bonded and the first shaping block and a second contact point between the part to be bonded and the second shaping block; In the second bonding image, a third contact point between the part to be bonded and the first shaping block and a fourth contact point between the part to be bonded and the second shaping block are determined.

[0011] Optionally, after determining the lamination ratio and contact points between the two sides of the part to be pressed and the first shaping block and the second shaping block according to the lamination image, the method further includes: Determining whether the parts to be pressed meet shaping conditions, wherein the shaping conditions include that the first fitting ratio is greater than a first ratio threshold or the second fitting ratio is greater than a second ratio threshold; If the parts to be pressed meet the shaping conditions, continue to perform shaping on the parts to be pressed; If the part to be pressed does not meet the shaping condition, the driving member in the driving mechanism is controlled to work, so as to drive the first shaping block away from the second shaping block, and stop shaping the part to be pressed.

[0012] Optionally, controlling the heating element and the driving mechanism to work in coordination with each other to shape the part to be pressed according to the contact points of the first shaping pressing block and the second shaping pressing block with the part to be pressed and the fitting ratio respectively includes: Determine a first contact area between the first shaping pressing block and the part to be pressed according to the first contact point and the third contact point, and determine the heating element including the first contact area as the starting heating element; Determine a second contact area between the second shaping pressing block and the part to be pressed according to the second contact point and the fourth contact point, and determine the heating element including the second contact area as the starting heating element; According to the determined plurality of the starting heating elements and the laminating ratio, the heating elements and the driving mechanism are controlled to work in coordination.

[0013] Optionally, controlling the heating element and the driving mechanism to work in coordination according to the determined plurality of the initial heating elements and the lamination ratio comprises: Determining the heating temperatures of the plurality of starting heating elements according to the lamination ratio and the preset temperature; Determining the heating temperature of other heating elements according to the distance between the starting heating element and other heating elements, wherein the other heating elements are the heating elements other than the starting heating element; According to the determined heating temperature, controlling the starting heating element and the other heating elements to heat to the corresponding heating temperature; When the temperatures of the initial heating element and the other heating elements reach the corresponding heating temperatures, the driving element in the driving mechanism is controlled to operate so as to drive the first shaping pressing block to approach the second shaping pressing block.

[0014] Optionally, controlling the heating element and the driving mechanism to work in coordination according to the determined plurality of heating elements and the bonding ratio further comprises: When the pressure value of the pressure sensor in the driving mechanism reaches a pressure threshold, the first image acquisition device is controlled to reacquire the first bonding image and the second image acquisition device is controlled to reacquire the second bonding image; According to the first bonding image and the second bonding image that are reacquired, the heating element and the driving mechanism are controlled to work in coordination until both sides of the part to be bonded are completely bonded to the first shaping block and the second shaping block, respectively.

[0015] The beneficial effects of the parts shaping device and shaping control method of the present invention are: The cooled part to be pressed after die-casting is placed between the first shaping block and the second shaping block. The control module controls the driving mechanism and the image acquisition device to work, driving the first shaping block to move to the position of the second shaping block. When the first shaping block contacts the part to be pressed, the control module controls the driving member to stop working, and the image acquisition device obtains the fitting images of the first shaping block and the second shaping block with the part to be pressed respectively. The contact points of the first shaping block and the second shaping block with the parts to be pressed are determined by the fitting image, and then the heating elements around the contact points are controlled to start heating to a temperature at which the parts to be pressed are slightly softened. At this time, the first shaping block squeezes the parts to be pressed and shapes the parts to be pressed, so that the distance between the first shaping block and the second shaping block is reduced. The driving mechanism can also be controlled to continue the pressurization work, so that the first shaping block squeezes the parts to be pressed again. At this time, the parts to be pressed are closer to the qualified parts, and the contact areas between the parts to be pressed and the first shaping block and the second shaping block are increased, and the contact points become contact line segments or the lengths of the contact line segments extend to the surrounding areas and become longer. At this time, other peripheral heating elements can be controlled to start working along the direction of the contact line segments, and the driving mechanism can cooperate in pressurization until there is no gap between the parts and the first shaping block and the second shaping block, and they are completely fitted. First, the heating element at the contact point is controlled to start heating, and then gradually diffuses to the surrounding area with the contact point as the center, and multiple heating elements are controlled to heat in succession in a layer-by-layer outward expansion manner, so that the parts to be pressed start to be shaped from the contact point. As the shaping proceeds, starting from the contact point, the parts gradually fit with the first shaping block and the second shaping block. By adopting this layer-by-layer outward expansion manner, the lateral extension or lateral stress generated by the parts to be pressed during the shaping process will not accumulate inside the parts, but will dissipate to the outside with the shaping, so that the shaped parts are not easily deformed again due to internal residual stress, the shaping efficiency is high, the shaping adopts a unified first shaping block and a unified second shaping block, the shaping standard is consistent, the quality is uniform, and the quality pass rate of the repaired products is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic top view of a parts shaping device provided by an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the cross-section at AA in the middle; Figure 3 A schematic diagram of contact point positions provided by an embodiment of the present invention; Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle; Figure 5 A schematic diagram of initial heating element positioning provided in an embodiment of the present invention; Figure 6The figure is a flow chart of a part shaping control method.

[0017] Description of reference numerals: 1. First shaping block; 2. Second shaping block; 3. Parts to be pressed; 4. Heating element; 5. Driving mechanism; 51. Driving element; 52. Guide cylinder; 53. Piston rod; 54. Elastic element; 55. Pressure sensor; 61. First image acquisition device; 62. Second image acquisition device; 7. Guide element; 8. Guide groove; 9. First contact point; 10. Second contact point; 11. Fourth contact point; 12. Second positioning auxiliary line; 13. Second auxiliary intersection point; 14. Starting heating element. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0019] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0020] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0021] In view of the problems existing in the above-mentioned related technologies, this embodiment provides a part shaping device and a shaping control method.

[0022] like Figure 1 and Figure 2As shown, a part shaping device provided by an embodiment of the present invention comprises a first shaping block 1, a second shaping block 2, a heating element 4, a driving mechanism 5, an image acquisition device and a control module; the second shaping block 2 and the second shaping block 2 are arranged opposite to each other, the surface of the first shaping block 1 facing the second shaping block 2 and the surface of the second shaping block 2 facing the first shaping block 1 are respectively consistent with the standard shapes of the two side surfaces of the part to be pressed 3, and are respectively used to fit the corresponding two side surfaces of the part to be pressed 3, and the driving mechanism 5 is used to drive the first shaping block 1 to approach the second shaping block 2. , so as to press and shape the part to be pressed 3; a plurality of the heating elements 4 are distributed on the surface of the first shaping block 1 facing the second shaping block 2 and the surface of the second shaping block 2 facing the first shaping block 1; the image acquisition device is used to acquire the bonding images of the two sides of the part to be pressed 3 with the first shaping block 1 and the second shaping block 2 respectively; the image acquisition device, the driving mechanism 5, and the heating element 4 are all electrically connected to the control module, and the control module is used to obtain the bonding image uploaded by the image acquisition device, and control the driving mechanism 5 and the heating element 4 to work.

[0023] Specifically, the heating element 4 can be a heating plate or a group of heating rods, etc., which are installed on the surface of the first shaping block 1 and the second shaping block 2, or installed inside the end where the first shaping block 1 and the second shaping block 2 are close to each other, mainly to heat the end of the first shaping block 1 that contacts the part 3 to be pressed and the end of the second shaping block 2 that contacts the part 3 to be pressed. Figure 2 Taking the positional relationship shown as an example, the shape of the end of the first shaping block 1 that contacts the part to be pressed 3 is the shape of the upper surface of the qualified part, and the shape of the end of the second shaping block 2 that contacts the part to be pressed 3 is the shape of the lower surface of the qualified part.

[0024] In this embodiment, if Figure 2 As shown, the part to be pressed 3 that is cooled and deformed after die casting is placed between the first shaping block 1 and the second shaping block 2. Since the surface shape of the second shaping block 2 is consistent with the surface shape of the qualified part, part of the part to be pressed 3 is in contact with the second shaping block 2. Figure 2 The control module controls the driving mechanism 5 and the image acquisition device to work, driving the first shaping block 1 to move to the position of the second shaping block 2. When the first shaping block 1 contacts the part to be pressed 3 and the first shaping block 1 starts to squeeze the part to be pressed 3, the control module controls the driving member 51 to stop working. Figure 1As shown, the image acquisition device can be set on one side of the first shaping block 1, so that the image acquisition device can capture the area between the first shaping block 1 and the second shaping block 2, and obtain the bonding images of the first shaping block 1 and the second shaping block 2 and the part to be pressed 3 respectively. The edges of the first shaping block 1, the second shaping block 2 and the part to be pressed 3 are identified by using the object edge recognition algorithm through the bonding image, wherein the edge recognition algorithm includes the Sobel edge detection algorithm, the Scharr edge detection algorithm, the Laplacian edge detection algorithm or the Canny edge detection algorithm. Figure 3As shown, the contact points (or contact segments) of the first shaping block 1 and the second shaping block 2 with the part 3 to be pressed are determined by the identified edges, and then the heating element 4 around the contact points (or contact segments) is controlled to start heating, and heated to a temperature that slightly softens the part 3 to be pressed. At this time, under the previous pressure, the first shaping block 1 squeezes the part 3 to be pressed, and shapes the part 3 to be pressed, so that the distance between the first shaping block 1 and the second shaping block 2 is reduced. It is also possible that the previous pressure is not enough to cause the part 3 to be pressed to deform. At this time, the driving element 4 can be controlled to drive the first shaping block 1 to squeeze the part 3 to be pressed, and the first shaping block 1 can be driven to squeeze the part 3 to be pressed. The driving mechanism 5 continues to apply pressure, so that the first shaping block 1 squeezes the part to be pressed 3 again. At this time, the shape of the part to be pressed 3 is close to the qualified part, and the contact area between the part to be pressed 3 and the first shaping block 1 and the second shaping block 2 is increased. The contact point becomes a contact line segment or the length of the contact line segment extends to the surrounding and becomes longer. At this time, the other peripheral heating elements 4 can be controlled to start working along the direction of extension of the contact line segment, and the driving mechanism 5 cooperates to apply pressure until there is no gap between the part to be pressed 3 and the first shaping block 1 and the second shaping block 2, and they are completely fitted. First, the heating element 4 at the contact point is controlled to start heating, and then gradually diffuses to the surroundings with the contact point as the center, and multiple heating elements 4 are controlled to heat in succession in a layer-by-layer outward expansion manner, so that the part 3 to be pressed starts to be shaped from the contact point. As the shaping proceeds, starting from the contact point, the part 3 to be pressed gradually fits with the first shaping block 1 and the second shaping block 2. By adopting this layer-by-layer outward expansion manner, the lateral extension or lateral stress generated by the part 3 to be pressed during the shaping process will not accumulate inside the part 3 to be pressed, but will dissipate to the outside with the shaping, so that the part 3 to be pressed after shaping is not easy to be deformed again due to internal residual stress, and the shaping efficiency is high. The shaping adopts a unified first shaping block 1 and a unified second shaping block 2, the shaping standard is consistent, the quality is uniform, and the quality pass rate of the trimmed products is high. If the area where the part 3 to be pressed is in complete contact with the first shaping block 1 and the second shaping block 2 includes a complete heating element 4, the heating element 4 in the complete contact area can be controlled to stop heating to reduce energy consumption, or a partial area of ​​the part 3 to be pressed can be cooled in advance. At this time, the cooled part 3 to be pressed is still between the first shaping block 1 and the second shaping block 2 and is in a compressed state. It is not easy to deform after cooling, which further reduces the probability of deformation after shaping.

[0025] Alternatively, if Figure 4As shown, the driving mechanism 5 includes a driving member 51, a guide cylinder 52, a piston rod 53, an elastic member 54 and a pressure sensor 55; the driving member 51 is used to connect with the external bracket, the driving member 51 is connected to one end of the piston rod 53, and is used to drive the other end of the piston rod 53 to move in the guide cylinder 52, the guide cylinder 52 is installed on the first shaping block 1, the guide cylinder 52 is provided with the pressure sensor 55 installed on the first shaping block 1, the elastic member 54 is arranged in the guide cylinder 52, and the two ends of the elastic member 54 are respectively connected to the other end of the piston rod 53 and the pressure sensor 55; the pressure sensor 55 is electrically connected to the control module, and the control module is used to obtain the pressure value uploaded by the pressure sensor 55 and control the operation of the driving mechanism 5. The driving member 51 can be a motor in a servo electric cylinder, a charging end in a hydraulic cylinder, or an inflating end in a cylinder, etc.

[0026] like Figure 2 and Figure 4 As shown, the driving member 51 in the driving mechanism 5 is controlled to work, so that the piston rod 53 extends, and the piston rod 53 squeezes the elastic member 54 to drive the first shaping block 1 to move to the position of the second shaping block 2. After the first shaping block 1 contacts the part to be pressed 3, the first shaping block 1 begins to squeeze the part to be pressed 3, so that the pressure felt by the pressure sensor 55 in the driving mechanism 5 increases, and the control module receives the pressure value of the pressure sensor 55. When the pressure value of the pressure sensor 55 is greater than the pressure threshold, the driving member 51 is controlled to stop working, and the image acquisition device starts working at this time. In addition, after the heating element 4 heats the part to be pressed 3, the part to be pressed 3 begins to soften, the rigidity decreases, and it is easy to deform. The part to be pressed 3 will deform under the pressure applied by the driving mechanism 5. At this time, the pressure felt by the pressure sensor 55 will decrease. When the pressure value of the pressure sensor 55 is monitored to be less than the pressure threshold, the driving member 51 in the driving mechanism 5 can be controlled to work again. In this way, the automatic start and stop of the driving mechanism 5 can be realized, and it is ensured that the pressure is not excessive at one time, thereby improving the shaping effect.

[0027] Alternatively, if Figure 1 As shown, the image acquisition device includes a first image acquisition device 61 and a second image acquisition device 62, the first image acquisition device 61 and the second image acquisition device 62 are respectively connected to the control module, the first image acquisition device 61 and the second image acquisition device 62 are respectively arranged on the adjacent two sides of the first shaping block 1, and the lens center line of the first image acquisition device 61 and the lens center line of the second image acquisition device 62 are respectively perpendicular to the side surfaces of the adjacent two sides of the first shaping block 1.

[0028] Specifically, since the plurality of driving mechanisms 5 are mounted on the first shaping block 1 in a lateral and longitudinal array, Figure 1 As shown, the first shaping block 1 is provided with three rows and nine columns of driving mechanisms, so the heating elements 4 corresponding to the driving mechanisms 5 are also arranged in an array, such as Figure 5 As shown, the heating element 4 is also arranged in three rows and nine columns, so as to more finely divide the surface of the first shaping block 1 and the second shaping block 2 into multiple areas, so as to gradually shape the parts to be pressed 3, avoiding the problem of excessive force applied at one time or too much shaping at one time, which may cause damage to the parts to be pressed 3.

[0029] In this embodiment, a first image acquisition device 61 and a second image acquisition device 62 are respectively arranged on two adjacent sides of the first shaping pressing block 1, and the lens center line of the first image acquisition device 61 and the lens center line of the second image acquisition device 62 are respectively perpendicular to the side surface of the first shaping pressing block 1, so that the first image acquisition device 61 can obtain a first fitting image without occlusion, and the second image acquisition device 62 can obtain a second fitting image without occlusion. The degree of fit between the part 3 to be pressed and the first shaping block 1 and the second shaping block 2 can be observed from two directions, so as to accurately locate the contact positions of the part 3 to be pressed and the first shaping block 1 and the second shaping block 2, and then control the heating element 4 at the contact position to start heating first, so as to soften the part 3 to be pressed, reduce the rigidity of the part 3 to be pressed, and make it easier for the part 3 to be pressed to be pressed and restored to be qualified. Then the driving element 51 works, so that the first shaping block 1 continuously applies pressure to the part 3 to be pressed. When the part 3 to be pressed at the contact position is completely fitted with the first shaping block 1 and the second shaping block 2, the heating element 4 outside the contact position starts working and heats, and so on, so as to gradually extrude the part 3 to be pressed and restore it to the qualified level, avoid residual stress inside the part 3 to be pressed, and ensure that the part 3 to be pressed is completely restored to be qualified.

[0030] Alternatively, if Figure 2 As shown, the part shaping device further includes a guide member 7, at least two of which are respectively mounted at the two ends of the first shaping block 1. Figure 5 As shown, both ends of the second shaping pressing block 2 are provided with guide grooves 8 , and the guide grooves 8 correspond to the guide members 7 one by one, and the guide members 7 slide in and out of the corresponding guide grooves 8 .

[0031] Specifically, Figure 2As shown, guide members 7 are installed at both ends of the first shaping block 1. The guide members 7 can be guide columns or guide rods and other parts that play a guiding role. On the second shaping block 2, a guide groove 8 is opened at a position corresponding to the guide member 7. When the first shaping block 1 moves toward the second shaping block 2, the guide member 7 is inserted into the guide groove 8 to guide the first shaping block 1 to be aligned with the second shaping block 2 to avoid misalignment of the two shaping blocks, so that the quality of the parts to be pressed 3 after extrusion is uniform and the qualified rate is greatly improved.

[0032] like Figure 6 As shown, an embodiment of the present invention provides a part shaping control method, based on the part shaping device as described above, the part shaping control method includes: S1: Control the driving mechanism 5 and the image acquisition device to drive the first shaping block 1 to approach the second shaping block 2, and obtain the bonding image uploaded by the image acquisition device, wherein a part 3 to be pressed is placed between the first shaping block 1 and the second shaping block 2.

[0033] S2: When the first shaping pressing block 1 starts to press the part to be pressed 3, the driving mechanism 5 is controlled to stop working.

[0034] Specifically, after the first shaping block 1 contacts the part 3 to be pressed, as the piston rod 53 extends, the elastic member 54 is continuously squeezed, and the pressure of the elastic member 54 on the pressure sensor 55 increases. When the pressure value of the pressure sensor 55 is greater than the pressure threshold, it means that the pressure of the first shaping block 1 on the part 3 to be pressed is too great, and the driving member 51 can be suspended to continue working. Alternatively, the bonding image uploaded by the image acquisition device is used to analyze whether the first shaping block 1 contacts the part 3 to be pressed. When the first shaping block 1 contacts the part 3 to be pressed, the driving mechanism 5 is controlled to feed a certain distance or continue to run for a short time before stopping.

[0035] S3: Determine the bonding ratio and contact points between the two sides of the part to be pressed 3 and the first shaping pressing block 1 and the second shaping pressing block 2 respectively according to the bonding image.

[0036] Specifically, based on the obtained fitting image, the edge contours of the part to be pressed 3, the first shaping block 1 and the second shaping block 2 can be identified from the fitting image, and then the gap between the contours is analyzed. When the gap between the contours is smaller than a certain value, for example, smaller than 0.1 mm, it is determined that the contour of the part to be pressed 3 is fitted with the first shaping block 1 or the second shaping block 2. By measuring the length of the fitted contour, the ratio between the length of the fitted contour and the length of the contour of the part to be pressed 3 is calculated to obtain the fitting ratio.

[0037] S4: According to the contact points of the first shaping block 1 and the second shaping block 2 with the part to be pressed 3 and the fitting ratio, the heating element 4 and the driving mechanism 5 are controlled to work in coordination to shape the part to be pressed 3.

[0038] Specifically, according to the bonding image, the contact points of the part 3 to be pressed and the first shaping block 1 and the second shaping block 2 are respectively confirmed, and according to the contact points and the bonding ratio, the heating element 4 and the driving mechanism 5 are controlled to work in coordination. For example, the heating element 4 at the contact point works first, and after heating to a specified temperature, the driving mechanism 5 at the contact point is controlled to continue to extrude, and then the heating element 4 outside the contact point is controlled to heat and the driving mechanism 5 to continue to extrude, so that the part 3 to be pressed is gradually heated and pressurized for shaping, and the part 3 to be pressed begins to deform laterally from the contact point, and the lateral deformation force overflows from the edge of the part 3 to be pressed, so that internal stress is retained inside the part 3 to be pressed, thereby ensuring that the part 3 to be pressed after shaping will not deform again.

[0039] In this embodiment, the driving mechanism 5 and the image acquisition device are controlled to work to drive the first shaping block 1 to approach the second shaping block 2, so that the first shaping block 1 squeezes the part to be pressed 3, and obtains the bonding image uploaded by the image acquisition device. After the first shaping block 1 contacts the part to be pressed 3, the driving member 51 is controlled to stop working. According to the bonding image, the bonding ratio and contact points of the two sides of the part to be pressed 3 with the first shaping block 1 and the second shaping block 2 are determined. According to the contact points of the first shaping block 1 and the second shaping block 2 with the part to be pressed 3 and the fitting ratio, the heating element 4 and the driving mechanism 5 are controlled to work together to shape the part to be pressed 3. For example, the heating element 4 at the contact point works first, and after heating to a specified temperature, the driving mechanism 5 at the contact point is controlled to continue extrusion, and then the heating element 4 outside the contact point is controlled to heat and the driving mechanism 5 to continue extrusion, so that the heating element 4 and the driving mechanism 5 work together to gradually heat and pressurize the part to be pressed, and the part to be pressed 3 begins to deform laterally from the contact point, and the lateral deformation force overflows from the edge of the part to be pressed 3, so that internal stress is retained inside the part to be pressed 3, ensuring that the part to be pressed 3 after shaping will not be deformed again, thereby improving the quality and shaping efficiency of the part to be pressed 3 after shaping, and maintaining the uniform quality of the part to be pressed 3 after shaping.

[0040] Optionally, the image acquisition device includes a first image acquisition device 61 and a second image acquisition device 62, the fitted image includes a first fitted image uploaded by the first image acquisition device 61 and a second fitted image uploaded by the second image acquisition device 62, and the fitting ratio includes a first fitting ratio corresponding to the first fitted image and a second fitting ratio corresponding to the second fitted image.

[0041] Determining the lamination ratio and contact points between the two sides of the to-be-laminated part 3 and the first shaping pressing block 1 and the second shaping pressing block 2 according to the lamination image includes: In the first bonding image, a first bonding length between the part to be bonded 3 and the first shaping block 1 and a second bonding length between the part to be bonded 3 and the second shaping block 2 are identified.

[0042] The first bonding ratio is obtained according to the first bonding length, the second bonding length, and the first projection length of the part 3 to be bonded in the first bonding image.

[0043] In the second bonding image, a third bonding length between the part to be bonded 3 and the first shaping press block 1 and a fourth bonding length between the part to be bonded 3 and the second shaping press block 2 are identified.

[0044] The second bonding ratio is obtained according to the third bonding length, the fourth bonding length and the second projection length of the part 3 to be bonded in the second bonding image.

[0045] Specifically, Figure 3 As shown, the first bonding ratio is obtained by adding the first bonding length and the second bonding length, and then dividing by the first projection length of the upper and lower contour edges of the part 3 to be pressed in the first bonding image; the second bonding ratio is obtained by adding the third bonding length and the fourth bonding length, and then dividing by the second projection length of the upper and lower contour edges of the part 3 to be pressed in the second bonding image. The bonding ratio of the part 3 to be pressed and the first shaping block 1 and the second shaping block 2 is measured from two angles, so as to control the shaping progress as a whole.

[0046] In the first bonding image, a first contact point between the part to be pressed 3 and the first shaping pressing block 1 and a second contact point between the part to be pressed 3 and the second shaping pressing block 2 are determined.

[0047] Specifically, Figure 3 and Figure 5 As shown, the contact point between the part to be pressed 3 and the first shaping block 1 is the first contact point 9, and the contact point between the part to be pressed 3 and the second shaping block 2 is the second contact point 10. When the contact surface is large, the contact point between the part to be pressed 3 and the first shaping block 1 may be a contact segment, and the contact point between the part to be pressed 3 and the second shaping block 2 may be a contact segment. At this time, the processing and control methods of the contact segment and the contact point are similar.

[0048] In the second bonding image, the third contact point between the part to be bonded 3 and the first shaping block 1 and the fourth contact point between the part to be bonded 3 and the second shaping block 2 are determined. Figure 5 As shown, the contact point between the part 3 to be pressed and the second shaping pressing block 2 is the fourth contact point 11.

[0049] Optionally, after determining the lamination ratio and contact points between the two sides of the part 3 to be pressed and the first shaping pressing block 1 and the second shaping pressing block 2 according to the lamination image, the method further includes: It is determined whether the part 3 to be pressed meets a shaping condition, wherein the shaping condition includes that the first fitting ratio is greater than a first ratio threshold or the second fitting ratio is greater than a second ratio threshold.

[0050] If the part 3 to be pressed meets the shaping condition, it means that the deformation of the part 3 to be pressed is still within the acceptable range and can be trimmed into a qualified part through shaping, then the shaping of the part 3 to be pressed is continued.

[0051] If the part 3 to be pressed does not meet the shaping conditions, it means that the deformation of the part 3 to be pressed is too large. Even if it is shaped, distortion and other problems may occur during the shaping process. The qualified rate of the parts to be pressed after shaping is low. At this time, the driving member 51 in the driving mechanism 5 is controlled to work to drive the first shaping block 1 away from the second shaping block 2 to stop shaping the part 3 to be pressed.

[0052] Specifically, the first ratio threshold and the second ratio threshold may be equal, for example, 10%; the two ratio thresholds may also be different, for example Figure 5 In the figure, the second shaping pressing block 2 carrying the part 3 to be pressed has a longer lateral length and a shorter longitudinal length. The part 3 to be pressed also has a longer lateral length and a shorter longitudinal length. Therefore, the first ratio threshold can be set to be slightly larger than the second ratio threshold. For example, the first ratio threshold is 15% and the second ratio threshold is 8%. The above examples are only for ease of explanation and do not limit the values ​​of the first ratio threshold and the second ratio threshold.

[0053] Optionally, controlling the heater 4 and the drive mechanism 5 to work in coordination with each other to shape the part 3 to be pressed together according to the contact points of the first shaping block 1 and the second shaping block 2 with the part 3 to be pressed together and the fitting ratio to shape the part 3 to be pressed together comprises: According to the first contact point and the third contact point, a first contact area between the first shaping pressing block 1 and the part to be pressed 3 is determined, and the heating element 4 including the first contact area is determined as the starting heating element.

[0054] According to the second contact point and the fourth contact point, a second contact area between the second shaping pressing block 2 and the part to be pressed 3 is determined, and the heating element 4 including the second contact area is determined as the starting heating element.

[0055] Specifically, the contact point mentioned here can be a point or a line segment. For example, the contact point is a point. Figure 5 As shown, with the second contact point 10 as the starting point, an auxiliary line is drawn toward the inside of the second shaping block 2 to obtain a second positioning auxiliary line 12; with the fourth contact point 11 as the starting point, an auxiliary line is drawn toward the inside of the second shaping block 2 to obtain another second positioning auxiliary line 12; the intersection of the two second positioning auxiliary lines 12 is the second auxiliary intersection point 13, and this intersection is the second contact area. Similarly, with the first contact point and the third contact point as the starting point, auxiliary lines are drawn toward the inside of the first shaping block 1 to obtain multiple first positioning auxiliary lines, and the intersection of multiple first positioning auxiliary lines is the first contact area. Figure 5 As shown, if the second auxiliary intersection 13 is located on the edge of the two heating elements 4, it is considered that both of the two heating elements 4 contain the second auxiliary intersection 13, and the heating element 4 containing the second auxiliary intersection 13 is determined as the starting heating element 14. In addition, if the second contact area is only inside one heating element 4, it is considered that only one heating element contains the second contact area. Similarly, the starting heating elements on the first shaping block 1 and the second shaping block 2 are determined according to whether the heating element 4 on the first shaping block 1 contains the first contact area. Similarly, if the contact point is a line segment, a coordinate system is established with the lower left corner vertex of the second shaping block 2 as the coordinate origin. According to the coordinates of the contact segment in the first bonding image and the coordinates of the contact segment in the second bonding image, a contact area can be located in the first shaping block 1 and the second shaping block 2, respectively, which are the first contact area and the second contact area, respectively, and then the heating element containing the first contact area and the second contact area is used as the starting heating element. Here, the heating element containing the contact area means that the projection of the contact area overlaps with the heating element.

[0056] According to the determined plurality of starting heating elements and the laminating ratio, the heating element 4 and the driving mechanism 5 are controlled to work in coordination.

[0057] Specifically, according to the first fitting image and the second fitting image, the contact points are determined and auxiliary lines and auxiliary intersections are constructed to accurately locate the starting heating element, so that the starting heating element is controlled to start heating first, and then the driving mechanism 5 is controlled to work. At the same time, the average value of the first fitting ratio and the second fitting ratio can be taken as the final fitting ratio. The heating temperature of the starting heating element and the pressure threshold of the pressure sensor 55 in the driving mechanism 5 are determined according to the fitting ratio, so that the heating degree of the heating element 4 and the shaping extrusion degree of the driving mechanism 5 can be accurately controlled.

[0058] Optionally, controlling the heating element 4 and the driving mechanism 5 to work in coordination according to the determined plurality of starting heating elements and the lamination ratio comprises: The heating temperatures of the plurality of starting heating elements are determined according to the lamination ratio and the preset temperature.

[0059] Specifically, assuming that the preset temperature is set to 150°C and the bonding ratio is 10%, the determined heating temperature is 150*(1-10%)=135°C, that is, 100% minus the bonding ratio multiplied by the preset temperature to obtain the heating temperature.

[0060] The heating temperatures of the other heating elements are determined according to the distance between the starting heating element and the other heating elements, wherein the other heating elements are the other heating elements 4 except the starting heating element.

[0061] Specifically, according to the distance between the center of the initial heating element and the centers of the other heating elements, the heating temperature of the initial heating element is reduced in equal proportion to obtain the heating temperatures of the other heating elements.

[0062] According to the determined heating temperature, the starting heating element and the other heating elements are controlled to be heated to the corresponding heating temperature.

[0063] Specifically, the heating temperature of other heating elements is controlled to be lower than the heating temperature of the initial heating element so that the initial heating element heats the part 3 to be pressed while other heating elements are preheated, thereby reducing the heating time and improving the shaping efficiency.

[0064] When the temperatures of the initial heating element and the other heating elements reach the corresponding heating temperatures, the driving element 51 in the driving mechanism is controlled to operate so as to drive the first shaping pressing block 1 to approach the second shaping pressing block 2 .

[0065] Specifically, when the temperatures of the starting heating element and the other heating elements reach the corresponding heating temperatures, controlling the driving element 51 in the driving mechanism to operate includes: The pressure threshold of the pressure sensor 55 is determined according to the fitting ratio and the preset pressure.

[0066] Specifically, when the fit ratio is smaller, the pressure threshold is larger, that is, the pressure threshold is inversely proportional to the fit ratio, because the smaller the fit ratio, the greater the deformation of the part to be pressed, and a greater pressure is required to extrude the part to be pressed. When the fit ratio is larger, it means that the deformation of the part is small. With the assistance of the heating element, only a smaller pressure is needed to complete the shaping. Dynamically setting the pressure threshold can prevent the driving mechanism from feeding too much distance at one time in subsequent work, resulting in excessive extrusion of the part to be pressed at one time, causing internal stress in the part to be pressed 3. Setting the pressure threshold can control the feeding amount of the driving mechanism each time and improve the shaping quality.

[0067] Optionally, controlling the heating element 4 and the driving mechanism 5 to work in coordination according to the determined plurality of heating elements 4 and the bonding ratio further comprises: When the pressure value of the pressure sensor 55 in the driving mechanism reaches a pressure threshold, the first image acquisition device 61 is controlled to reacquire the first bonding image and the second image acquisition device 62 is controlled to reacquire the second bonding image.

[0068] According to the first bonding image and the second bonding image that have been reacquired, a new bonding ratio is re-determined and a new contact point is located, so as to determine a new starting heating element, a new heating temperature and a new pressure threshold, and then control the heating element 4 and the driving mechanism 5 to work together until both sides of the part 3 to be bonded are completely bonded with the first shaping block 1 and the second shaping block 2 respectively.

[0069] Specifically, during the shaping process, the heating element 4 and the driving mechanism 5 are cyclically controlled to work together to form a step-by-step extrusion shaping mode, so that the parts 3 to be pressed are heated and extruded from the initial contact point, and then a shaping method that gradually diffuses outward is formed, so that the parts 3 to be pressed are deformed laterally from the contact point to the surrounding periphery, reducing internal stress, ensuring that the parts 3 to be pressed are not easily deformed after shaping, and improving the shaping quality.

[0070] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A parts shaping device, characterized in that: The invention comprises a first shaping block (1), a second shaping block (2), a heating element (4), a driving mechanism (5), an image acquisition device and a control module; the second shaping block (2) and the second shaping block (2) are arranged opposite to each other, the surface of the first shaping block (1) facing the second shaping block (2) and the surface of the second shaping block (2) facing the first shaping block (1) are respectively consistent with the standard shapes of the two side surfaces of the part to be pressed (3), and are respectively used to fit the corresponding two side surfaces of the part to be pressed (3); the driving mechanism (5) is used to drive the first shaping block (1) to approach the second shaping block (2) so as to press and shape the part to be pressed (3); A plurality of the heating elements (4) are distributed on the surface of the first shaping block (1) facing the second shaping block (2) and the surface of the second shaping block (2) facing the first shaping block (1); the image acquisition device is used to acquire lamination images of the two sides of the part to be pressed (3) with the first shaping block (1) and the second shaping block (2) respectively; the image acquisition device, the drive mechanism (5) and the heating elements (4) are all electrically connected to the control module, and the control module is used to acquire the lamination images uploaded by the image acquisition device and control the operation of the drive mechanism (5) and the heating elements (4).

2. The parts shaping device according to claim 1, characterized in that: The driving mechanism (5) comprises a driving member (51), a guide cylinder (52), a piston rod (53), an elastic member (54) and a pressure sensor (55); the driving member (51) is connected to one end of the piston rod (53) and is used to drive the other end of the piston rod (53) to move in the guide cylinder (52); the guide cylinder (52) is mounted on the first shaping block (1); the guide cylinder (52) is provided with the pressure sensor (55) mounted on the first shaping block (1); the elastic member (54) is arranged in the guide cylinder (52); the two ends of the elastic member (54) are respectively connected to the other end of the piston rod (53) and the pressure sensor (55); the pressure sensor (55) is electrically connected to the control module.

3. The parts shaping device according to claim 1, characterized in that: The image acquisition device comprises a first image acquisition device (61) and a second image acquisition device (62), the first image acquisition device (61) and the second image acquisition device (62) being connected to the control module respectively, the first image acquisition device (61) and the second image acquisition device (62) being arranged on two adjacent sides of the first shaping block (1) respectively, and the lens center line of the first image acquisition device (61) and the lens center line of the second image acquisition device (62) are respectively perpendicular to the side surfaces of the two adjacent sides of the first shaping block (1).

4. The parts shaping device according to claim 1, characterized in that: It also comprises guide members (7), at least two of the guide members (7) are respectively mounted on the two ends of the first shaping block (1), and guide grooves (8) are provided on both ends of the second shaping block (2), the guide grooves (8) correspond to the guide members (7) one by one, and the guide members (7) slide in and out of the corresponding guide grooves (8).

5. A part shaping control method, characterized in that: Based on the part shaping device according to any one of claims 1 to 4, the part shaping control method comprises: Controlling the driving mechanism (5) and the image acquisition device to work so as to drive the first shaping pressing block (1) to approach the second shaping pressing block (2) and obtain a bonding image uploaded by the image acquisition device, wherein a part (3) to be bonded is placed between the first shaping pressing block (1) and the second shaping pressing block (2); When the first shaping pressing block (1) starts to press the part to be pressed (3), the driving mechanism (5) is controlled to stop working; Determining the lamination ratio and contact points between the two sides of the part to be pressed (3) and the first shaping pressing block (1) and the second shaping pressing block (2) respectively according to the lamination image; According to the contact points of the first shaping pressing block (1) and the second shaping pressing block (2) with the part to be pressed (3) respectively and the fitting ratio, the heating element (4) and the driving mechanism (5) are controlled to work in coordination so as to shape the part to be pressed (3).

6. The part shaping control method according to claim 5, characterized in that: The image acquisition device comprises a first image acquisition device (61) and a second image acquisition device (62); the assembled image comprises a first assembled image uploaded by the first image acquisition device (61) and a second assembled image uploaded by the second image acquisition device (62); and the assembled ratio comprises a first assembled ratio corresponding to the first assembled image and a second assembled ratio corresponding to the second assembled image; Determining the lamination ratio and contact points between the two sides of the part to be pressed (3) and the first shaping pressing block (1) and the second shaping pressing block (2) based on the lamination image includes: In the first bonding image, a first bonding length between the part to be bonded (3) and the first shaping block (1) and a second bonding length between the part to be bonded (3) and the second shaping block (2) are identified; Obtaining the first bonding ratio according to the first bonding length, the second bonding length and a first projection length of the part to be pressed (3) in the first bonding image; In the second bonding image, a third bonding length between the part to be bonded (3) and the first shaping block (1) and a fourth bonding length between the part to be bonded (3) and the second shaping block (2) are identified; Obtaining the second bonding ratio according to the third bonding length, the fourth bonding length and the second projection length of the part to be bonded (3) in the second bonding image; In the first bonding image, determining a first contact point between the part to be pressed (3) and the first shaping pressing block (1) and a second contact point between the part to be pressed (3) and the second shaping pressing block (2); In the second bonding image, a third contact point between the part to be bonded (3) and the first shaping block (1) and a fourth contact point between the part to be bonded (3) and the second shaping block (2) are determined.

7. The part shaping control method according to claim 6, characterized in that: After determining the lamination ratio and contact points between the two sides of the part to be pressed (3) and the first shaping pressing block (1) and the second shaping pressing block (2) according to the lamination image, the method further comprises: Determining whether the part to be pressed (3) meets a shaping condition, wherein the shaping condition includes that the first fitting ratio is greater than a first ratio threshold or the second fitting ratio is greater than a second ratio threshold; If the part to be pressed (3) meets the shaping condition, continuing to perform shaping on the part to be pressed (3); If the part to be pressed (3) does not meet the shaping condition, the driving member (51) in the driving mechanism (5) is controlled to operate so as to drive the first shaping block (1) away from the second shaping block (2) and stop shaping the part to be pressed (3).

8. The part shaping control method according to claim 6, characterized in that: According to the contact points of the first shaping block (1) and the second shaping block (2) with the part to be pressed (3) and the lamination ratio, respectively, controlling the heating element (4) and the driving mechanism (5) to work in coordination to shape the part to be pressed (3) comprises: Determining a first contact area between the first shaping pressing block (1) and the part to be pressed (3) according to the first contact point and the third contact point, and determining the heating element (4) including the first contact area as the starting heating element; Determining a second contact area between the second shaping pressing block (2) and the part to be pressed (3) according to the second contact point and the fourth contact point, and determining the heating element (4) including the second contact area as the starting heating element; According to the determined plurality of starting heating elements and the lamination ratio, the heating element (4) and the driving mechanism (5) are controlled to work in coordination.

9. The part shaping control method according to claim 8, characterized in that: The step of controlling the heating element (4) and the driving mechanism (5) to work in coordination according to the determined plurality of starting heating elements and the lamination ratio comprises: Determining the heating temperatures of the plurality of starting heating elements according to the lamination ratio and the preset temperature; Determining the heating temperature of the other heating elements according to the distance between the starting heating element and the other heating elements, wherein the other heating elements are the other heating elements (4) except the starting heating element; According to the determined heating temperature, controlling the starting heating element and the other heating elements to heat to the corresponding heating temperature; When the temperatures of the initial heating element and the other heating elements reach the corresponding heating temperatures, the driving element (51) in the driving mechanism is controlled to operate so as to drive the first shaping pressing block (1) to approach the second shaping pressing block (2).

10. The part shaping control method according to claim 9, characterized in that: The step of controlling the heating element (4) and the driving mechanism (5) to work in coordination with each other according to the determined plurality of heating elements (4) and the bonding ratio further comprises: When the pressure value of the pressure sensor (55) in the driving mechanism reaches a pressure threshold, controlling the first image acquisition device (61) to reacquire the first bonding image and controlling the second image acquisition device (62) to reacquire the second bonding image; According to the first bonding image and the second bonding image that have been reacquired, the heating element (4) and the driving mechanism (5) are controlled to work in coordination until both sides of the part to be bonded (3) are completely bonded to the first shaping block (1) and the second shaping block (2), respectively.

Images