Workpiece machining method and die

Abstract

The embodiment of the invention relates to the technical field of workpiece machining, and discloses a workpiece machining method and a mold, and the method comprises the steps that the mold is filled with materials to form a workpiece; the size of the first forming cavity is larger than that of the second forming cavity in the mold opening direction of the first mold body and the second mold body; the first component and the second die body are controlled to move away from each other in the die opening direction, so that the first component is separated from the workpiece; under the condition that the first component is completely separated from the workpiece, the second component and the second die body are controlled to move relatively away from each other in the die opening direction, so that the second component is separated from the workpiece; and under the condition that the second component is completely separated from the workpiece, the second die body and the workpiece are controlled to move relatively away from each other in the die opening direction, so that the second die body is separated from the workpiece. By means of the technical scheme, the areas of different sizes on the workpiece can be demolded in batches, the situation that the areas of different sizes are mutually pulled or adhere to the mold in the demolding process is reduced, and the breakage rate of workpiece machining is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of workpiece processing, and in particular, to a workpiece processing method and a mold. Background Art

[0002] After the workpiece is formed in the mold, demolding is required. Due to the special shape of the workpiece, complex structures such as deep cavities, narrow slits or high ribs are often formed locally, and problems are likely to occur in these areas during the demolding process of the workpiece.

[0003] In the related art, the stresses received by different-sized regions during demolding are uneven, so that parts with special shapes (such as complex structures such as deep cavities, narrow slits or high ribs) are likely to adhere to the mold surface, often resulting in pulling or squeezing between different-sized regions of the workpiece, or even breakage. Summary of the Invention

[0004] To solve the above problems, the embodiments of the present application provide a workpiece processing method and a mold, which can demold different-sized regions on the workpiece in batches, reduce the situation of mutual pulling between regions with different sizes or adhesion to the mold during demolding, and reduce the breakage rate of workpiece processing.

[0005] On the one hand, the embodiments of the present application provide a workpiece processing method, in which materials are filled in a mold to form a workpiece. The mold includes a first mold body and a second mold body. The first mold body includes a first component and a second component. A first forming cavity is formed between the first component and the second mold body; a second forming cavity is formed between the second component and the second mold body; along the mold opening direction of the first mold body and the second mold body, the size of the first forming cavity is larger than that of the second forming cavity; controlling the first component and the second mold body to move relatively away from each other along the mold opening direction to separate the first component from the workpiece; in the case where the first component is completely separated from the workpiece, controlling the second component and the second mold body to move relatively away from each other along the mold opening direction to separate the second component from the workpiece; in the case where the second component is completely separated from the workpiece, controlling the second mold body and the workpiece to move relatively away from each other along the mold opening direction to separate the second mold body from the workpiece.

[0006] In the workpiece processing method provided by the embodiment of the present application, along the mold opening direction of the first mold body and the second mold body, the size of the first forming cavity is larger than that of the second forming cavity, that is, the size of the part of the workpiece formed in the first forming cavity is larger than that of the part of the workpiece formed in the second forming cavity. In other words, due to the size difference, when the part of the workpiece in the first forming cavity and the part in the second forming cavity are demolded, situations such as pulling and damage are likely to occur. The first mold body includes a first component and a second component. After the workpiece is formed, the relative movement of the first component and the second mold body in the mold opening direction is controlled to be away from each other. Since the first forming cavity is formed between the first component and the second mold body, the relative movement of the first component and the second mold body away from each other means that the first component moves away from the workpiece formed in the first forming cavity. During the movement of the first component, the contact area between the first component and the workpiece becomes smaller and smaller until there is no contact between the first component and the workpiece, that is, the first component and the workpiece are separated. In the case where the first component and the workpiece are separated, the relative movement of the second component and the second mold body in the mold opening direction is controlled to be away from each other, that is, after the first component and the workpiece in the first forming cavity are separated, the second component and the workpiece in the second forming cavity are separated. In this way, the parts of the workpiece located in the first forming cavity and the second forming cavity are demolded separately, and the mutual influence of the parts of the workpiece located in the first forming cavity and the second forming cavity during demolding is small. Especially for workpieces with deep cavity and narrow slit structures, the situation of mutual pulling between different parts of the workpiece or adhesion with the mold during demolding is reduced. Therefore, the damage rate of workpiece processing can be reduced and the yield rate can be improved.

[0007] In a possible implementation manner of the present application, in the step of controlling the relative movement of the first component and the second mold body in the mold opening direction to separate the first component from the workpiece, the workpiece processing method includes: when the first component and the second mold body move relative to each other, controlling the second component to remain relatively stationary with respect to the second mold body.

[0008] In a possible implementation manner of the present application, in the step of controlling the relative movement of the second component and the second mold body in the mold opening direction to separate the second component from the workpiece when the first component is completely separated from the workpiece, the workpiece processing method includes: determining that the first component is completely separated from the workpiece when the relative displacement amount is greater than or equal to a preset threshold.

[0009] In a possible implementation manner of the present application, the mold further includes a fixed seat; in the step of controlling the second component to remain relatively stationary with respect to the second mold body when the first component and the second mold body move relative to each other, the workpiece processing method includes: keeping the first component relatively fixed with respect to the fixed seat, keeping the second component and the second mold body relatively locked; controlling the second mold body to move away from the first component in the mold opening direction so as to separate the first component from the workpiece.

[0010] In a possible implementation manner of the present application, in the case where the relative displacement amount is greater than or equal to a preset threshold, when determining that the first component is completely separated from the workpiece, the workpiece processing method includes: keeping both the first component and the second component relatively fixed with respect to the fixed seat; releasing the relative locking between the second component and the second die body; controlling the second die body to move away from the second component along the mold opening direction so that the second component is separated from the workpiece.

[0011] In a possible implementation manner of the present application, the mold further includes an ejection mechanism, and the ejection mechanism can move relative to the second die body; in the case where the second component is completely separated from the workpiece, when controlling the second die body and the workpiece to move relatively away from each other along the mold opening direction so that the second die body is separated from the workpiece, the workpiece processing method includes: controlling the second die body to move relative to the ejection mechanism along the mold opening direction so that the ejection mechanism separates the workpiece relative to the second die body.

[0012] On the other hand, an embodiment of the present application further provides a mold applied to the workpiece processing method of any one of the above; the mold includes: a first die body and a second die body; the first die body includes a first component and a second component; a first molding cavity is formed between the first component and the second die body, and a second molding cavity is formed between the second component and the second die body; at least along the mold opening direction, the size of the first molding cavity is larger than the size of the second molding cavity, and the first component and the second component can move relative to each other along the mold opening direction.

[0013] The mold provided by the embodiment of the present application, because this mold is applied to the workpiece processing method of any one of the above, thus has the same beneficial effects as the workpiece processing method, that is, it can demold different-sized regions on the workpiece in batches, reduce the situation of mutual pulling between regions with different sizes during demolding or adhesion to the mold, and reduce the breakage rate of workpiece processing.

[0014] In a possible implementation manner of the present application, the mold further includes a limiting member, one end of the limiting member is fixedly connected to the first component, and the other end of the limiting member is slidably connected to the second component along the mold opening direction; the second component has a limiting portion, and the limiting member can abut against the limiting portion to limit the relative displacement amount between the first component and the second component.

[0015] In a possible implementation manner of the present application, the first component has a cooling channel inside, the cooling channel is used to accommodate a cooling medium, and the cooling medium is used to cool the workpiece; the first component is formed by a layer-by-layer stacking method to form the cooling channel.

[0016] In a possible implementation manner of the present application, an exhaust groove is opened on the outer wall of the second die body corresponding to the first molding cavity, and the exhaust groove communicates with the first molding cavity; and / or, the mold includes an ejection mechanism, the ejection mechanism passes through the second die body to abut against the workpiece, and a gap is provided between the ejection mechanism and the second die body. Description of the Drawings

[0017] Figure 1 The flowchart of the workpiece processing method provided by the embodiment of the present application Figure One ;

[0018] Figure 2 The structural schematic diagram of the mold provided by the embodiment of the present application under the condition of S100;

[0019] Figure 3 The structural schematic diagram of the mold provided by the embodiment of the present application under the condition of S200;

[0020] Figure 4 The structural schematic diagram of the mold provided by the embodiment of the present application under the condition of S300;

[0021] Figure 5 The structural schematic diagram of the mold provided by the embodiment of the present application under the condition of S400;

[0022] Figure 6 The flowchart of the workpiece processing method provided by the embodiment of the present application Figure Two ;

[0023] Figure 7 The flowchart of the workpiece processing method provided by the embodiment of the present application Figure Three ;

[0024] Figure 8 The structural schematic diagram of the workpiece provided by the embodiment of the present application;

[0025] Figure 9 Provided by the embodiment of the present application Figure 8 The partial sectional structure from the A-A perspective;

[0026] Figure 10 The flowchart of the workpiece processing method provided by the embodiment of the present application Figure Four ;

[0027] Figure 11 The flowchart of the workpiece processing method provided by the embodiment of the present application Figure Five

[0028] Figure 12 The flowchart of the workpiece processing method provided by the embodiment of the present application Figure Six ;

[0029] Figure 13 The structural schematic diagram of the first component provided by the embodiment of the present application;

[0030] Figure 14 The structural schematic diagram of the cooling channel of the first component provided by the embodiment of the present application;

[0031] Figure 15 The structural schematic diagram of the ejector pin and the exhaust groove provided by the embodiment of the present application.

[0032] Reference numerals:

[0033] 1 - First body; 11 - First component; 111 - Cooling channel; 1111 - First channel; 1111a - First inlet; 1111b - First outlet; 1112 - Second channel; 1112a - Second inlet; 1112b - Second outlet; 12 - Second component; 121 - Limiting part; 122 - Limiting space; 123 - Exhaust groove; 2 - Second body; 3 - Locking structure; 4 - Fixed seat; 41 - First part; 42 - Second part; 43 - Hot runner plate; 5 - Ejecting mechanism; 51 - Ejector pin; 6 - Limiting member; 61 - Abutting part; 7 - Workpiece; 71 - Deep cavity structure; B - Mold opening direction. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will further describe the specific technical solutions of this application in detail with reference to the accompanying drawings in the embodiments of this application. The following embodiments are used to illustrate this application but are not used to limit the scope of this application. The step numbers in the following embodiments are not intended to limit the execution order of each step. The step numbers are only for convenience of description, and the execution orders of different steps can be combined in a logical order to solve the same technical problem.

[0035] In the embodiments of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0036] In addition, in the embodiments of this application, orientation terms such as "upper", "lower", "left", and "right" are defined relative to the orientation in which the components in the accompanying drawings are schematically placed. It should be understood that these directional terms are relative concepts, and they are used for relative description and clarification, and they can change accordingly with the change of the orientation in which the components in the accompanying drawings are placed.

[0037] In the embodiments of this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium.

[0038] In the embodiments of the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0039] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0040] In the process of workpiece machining through a mold, after the workpiece is formed in the mold, demolding is required. Due to the special shape of the workpiece, complex structures such as deep cavities, narrow slots or high ribs are often formed locally, and problems are likely to occur in these areas during the demolding process of the workpiece. Due to the large size differences in different parts of the workpiece, the stresses received by different sized areas during demolding are uneven, making parts with special shapes (such as complex structures like deep cavities, narrow slots or high ribs) prone to adhesion to the mold surface, while thin-walled areas may deform due to uneven stress. Especially when the workpiece has both fine structures with a high aspect ratio and thick parts at the same time, traditional demolding methods often cause pulling or squeezing between different sized areas of the workpiece, or even breakage.

[0041] Refer to Figure 1 , Figure 1 is a flowchart of the workpiece machining method provided by the embodiments of the present application. The workpiece machining method includes:

[0042] S100 Fill materials in the mold to form a workpiece. The mold includes a first mold body and a second mold body. The first mold body includes a first component and a second component. A first forming cavity is formed between the first component and the second mold body; a second forming cavity is formed between the second component and the second mold body; along the mold opening direction of the first mold body and the second mold body, the size of the first forming cavity is larger than that of the second forming cavity;

[0043] S200 Control the first component and the second mold body to move relatively away from each other along the mold opening direction to separate the first component from the workpiece;

[0044] S300 In the case where the first component is completely separated from the workpiece, control the second component and the second mold body to move relatively away from each other along the mold opening direction to separate the second component from the workpiece;

[0045] When the second component is completely separated from the workpiece, S400 controls the second die body and the workpiece to move relatively away from each other in the mold opening direction, so that the second die body is separated from the workpiece.

[0046] In the embodiments of the present application, referring to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , Figure 2 shows a schematic structural diagram of the mold in the case of S100; Figure 3 shows a schematic structural diagram of the mold in the case of S200; Figure 4 shows a schematic structural diagram of the mold in the case of S300; Figure 5 shows a schematic structural diagram of the mold in the case of S400.

[0047] In the embodiments of the present application, the material is filled into the first forming cavity and the second forming cavity, and the shapes of the first forming cavity and the second forming cavity determine the shape of the workpiece 7 after forming. Referring to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shows the mold opening direction B of the first die body 1 and the second die body 2. After the workpiece 7 is formed in the mold, the first die body 1 and the second die body 2 will be separated from each other. The mold opening direction B refers to the axial movement direction in which the first die body 1 and the second die body 2 are separated.

[0048] In the embodiments of the present application, along the mold opening direction B, the size of the first forming cavity is larger than the size of the second forming cavity. Therefore, along the mold opening direction B, the size of the part of the workpiece 7 formed in the first forming cavity is larger than the size of the part of the workpiece 7 formed in the second forming cavity. Thus, the first forming cavity corresponds to a special shape on the workpiece 7. The special shape in the present application refers to a shape with a dimensional difference from other regions of the workpiece 7 (such as a deep cavity, a narrow slit or a high rib, etc.).

[0049] In the embodiments of the present application, it is possible to control the first component 11 to move away from the second die body 2; it is also possible to control the second die body 2 to move away from the first component 11; it is also possible to control the first component 11 and the second die body 2 to move in opposite directions together, so that the first component 11 and the second die body 2 move relatively away from each other.

[0050] In the embodiments of the present application, the process of separating the first component 11 from the workpiece 7 refers to the situation where the contact area between the first component 11 and the workpiece 7 gradually decreases, and the complete separation of the first component 11 from the workpiece 7 refers to the situation where there is no contact between the first component 11 and the workpiece 7. [[ID=4))

[0051] In the embodiments of the present application, the process of separating the second member 12 from the workpiece 7 refers to the gradual decrease in the contact area between the second member 12 and the workpiece 7, and the complete separation of the second member 12 from the workpiece 7 refers to the situation where there is no contact between the second member 12 and the workpiece 7.

[0052] In the embodiments of the present application, the second mold body 2 and the workpiece 7 move relatively away from each other. It can be that the second mold body 2 remains stationary, and the workpiece 7 moves away from the second mold body 2 under the action of mechanisms such as clamping members, suction cups or ejecting members; it can also be that the workpiece 7 remains stationary, and the second mold body 2 moves away from the workpiece 7 by means of manual or motor drive, etc.; it can also be that the workpiece 7 and the second mold body 2 move simultaneously, and the workpiece 7 and the second mold body 2 move in opposite directions in the mold opening direction B.

[0053] In the embodiments of the present application, after the first member 11 is separated from the workpiece 7, the second member 12 is separated from the workpiece 7. It can be understood that the workpiece 7 part in the first molding cavity is first demolded, and then the workpiece 7 part in the second molding cavity is demolded. Since the size of the first molding cavity is larger than that of the second molding cavity along the mold opening direction B, and the resistance during the demolding process of regions with different sizes is usually different. Therefore, demolding the workpiece 7 in the first molding cavity first can reduce the excessive pulling force on the space in the second molding cavity.

[0054] In this embodiment, along the mold opening direction B of the first mold body 1 and the second mold body 2, the size of the first molding cavity is larger than that of the second molding cavity, that is, the size of the part of the workpiece 7 formed in the first molding cavity is larger than that of the part of the workpiece 7 formed in the second molding cavity. In other words, due to the size difference, when the part of the workpiece 7 in the first molding cavity and the part in the second molding cavity are demolded, situations such as pulling and damage are likely to occur. The first mold body 1 includes a first member 11 and a second member 12. After the workpiece 7 is formed, the first member 11 and the second mold body 2 are controlled to move relatively away from each other in the mold opening direction B. Since a first molding cavity is formed between the first member 11 and the second mold body 2, the relative movement between the first member 11 and the second mold body 2 means that the first member 11 moves relatively away from the workpiece 7 formed in the first molding cavity. During the movement of the first member 11, the contact area between the first member 11 and the workpiece 7 becomes smaller and smaller until there is no contact between the first member 11 and the workpiece 7, that is, the first member 11 and the workpiece 7 are separated. When the first member 11 and the workpiece 7 are separated, the second member 12 and the second mold body 2 are controlled to move relatively away from each other along the mold opening direction B. That is, after the first member 11 and the workpiece 7 in the first molding cavity are separated, the second member 12 and the workpiece 7 in the second molding cavity are separated. In this way, the part of the workpiece 7 in the first molding cavity and the part of the workpiece 7 in the second molding cavity are demolded separately, and the mutual influence of the part of the workpiece 7 in the first molding cavity and the part in the second molding cavity during demolding is small. Especially for the workpiece 7 with a deep cavity and narrow slit structure, the situation where different parts of the workpiece 7 pull each other or adhere to the mold during demolding is reduced. Therefore, the damage rate of workpiece 7 processing can be reduced and the yield rate can be improved.

[0055] In some possible embodiments of the present application, as Figure 6 shown in, S210 is included in the above S200.

[0056] S210 controls the second member to remain relatively stationary with respect to the second mold body when the first member and the second mold body move relative to each other.

[0057] In the embodiment of the present application, controlling the second member and the second mold body to remain relatively stationary can be understood as taking the second mold body as a reference object. When the first member and the second mold body move relative to each other, the second member is stationary relative to the second mold body. That is, during the separation process of the first member and the workpiece, the movement states of the second member and the second mold body are the same.

[0058] In the embodiments of the present application, the second component and the second mold body can be kept relatively stationary through the locking structure 3. The locking structure 3 can include the cooperation of a plug pin and a positioning pin. Pin holes are provided at corresponding positions of the second component and the second mold body, and the relative movement between the two is prevented by inserting the plug pin or the positioning pin. The locking structure 3 can also include the cooperation of a buckle and a claw. Spring buckles or electromagnetic claws are used on the second component and the second mold body, which automatically engage when locking is required and are released mechanically or electromagnetically when unlocking. The locking structure 3 can also be other structures such as an opener that can keep the second component and the second mold body relatively stationary.

[0059] In this embodiment, during the separation process of the first component and the workpiece, the second component fixes the workpiece in the second forming cavity relatively, which can reduce the pulling or breakage caused by the pulling force generated by the separation of the space in the second forming cavity between the first component and the workpiece.

[0060] In some possible embodiments of the present application, as Figure 7 shown, S310 is included in the above S300.

[0061] When the relative displacement amount is greater than or equal to the preset threshold, it is determined that the first component and the workpiece are completely separated.

[0062] In the embodiments of the present application, the relative displacement amount refers to the displacement distance between the first component and the second mold body during the relative away movement along the mold opening direction. Taking the initial contact position of the first component and the second mold body (that is, the mold closing state of the first component and the second mold body) as a reference, during mold opening, the first component and the second mold body move relatively away along the mold opening direction, and the sum of the moving distances between the first component and the second mold body is the relative displacement amount.

[0063] In the embodiments of the present application, the situation where the first component and the workpiece are completely separated means that there is no contact between the first component and the workpiece. The preset threshold refers to the relative displacement distance between the first component and the second mold body during the process from when the first component starts to move away from the second mold body to when there is no contact between the first component and the workpiece, that is, the distance that the first component and the second mold body need to move to reach the situation where there is no contact between the first component and the workpiece.

[0064] In the embodiments of the present application, the preset threshold can be adjusted according to the shape and size of the workpiece, and the preset threshold can be obtained through repeated tests. For example, referring to Figure 8 and Figure 9, in the embodiment of the present application, the workpiece 7 is made of a reinforced engineering plastic of nylon 6 (PA6) added with 15% glass fiber (GF15). The depth of the part of the workpiece 7 located in the first molding cavity is 58 millimeters, the narrowest width is 3.7 millimeters, and the widest width is 10.9 millimeters. Through tests, the preset threshold of the workpiece 7 is 30 millimeters. Then, when the relative displacement amount of the first member 11 and the second mold body 2 is greater than or equal to 30 millimeters, it is determined that the first member 11 is completely separated from the workpiece 7.

[0065] In some possible embodiments of the present application, referring to Figure 10 , the mold further includes a fixed seat; as Figure 10 shown, the above step S210 can be implemented through S211 to S212.

[0066] S211 Keep the first member relatively fixed with respect to the fixed seat, and keep the second member and the second mold body relatively locked;

[0067] S212 Control the second mold body to move away from the first member along the mold opening direction, so that the first member is separated from the workpiece.

[0068] In the embodiment of the present application, while keeping the first member relatively fixed with respect to the fixed seat, control the second mold body to move away from the first member along the mold opening direction, that is, the first member does not displace during this process, and the second mold body moves away from the first member along the mold opening direction. Under the action of the force of the second mold body, the workpiece moves away from the first member until it is separated from the first member. The first frame can be detachably arranged on the fixed seat or non-detachably arranged on the fixed seat.

[0069] In the embodiment of the present application, keep the second member and the second mold body relatively locked. The second member can move synchronously under the drive of the second mold body, that is, the second member moves relative to the first member under the drive of the second mold body.

[0070] Exemplarily, the fixed seat may include a first part for setting the first member, and further include a second part for setting the second mold body. The position of the first part is fixed, and the second part can drive the second mold body to move under the drive of the driving mechanism.

[0071] In the embodiment of the present application, the second mold can move away from the first member along the mold opening direction under the drive of the driving mechanism. The driving mechanism can be a power mechanism such as a hydraulic cylinder, a servo motor, a cylinder, etc.

[0072] In this embodiment, since the first member is fixed, during the movement of the second mold body, the part of the workpiece located in the first molding cavity will be separated from the first member first. At this time, since the second member and the second mold body are relatively locked, the part of the workpiece located in the second molding cavity temporarily remains in the non-demolded state (that is, the state of not being separated from the second member).

[0073] In some possible embodiments of the present application, as Figure 11 shown in, the above-mentioned step S310 can be implemented by S311 to S313.

[0074] S311 keeps both the first member and the second member relatively fixed with respect to the fixed seat;

[0075] S312 releases the relative locking between the second member and the second mold body;

[0076] S313 controls the second mold body to move away from the second member along the mold opening direction, so that the second member is separated from the workpiece.

[0077] In the embodiments of the present application, the second member can be relatively fixed with respect to the first member, and the second member can also be relatively fixed with respect to the fixed seat. For example, the second member is connected to the fixed seat through a locking mechanism (such as a bolt, a hydraulic lock), and the second member can also be connected to the first member through a sliding member, so that while the second member can move relative to the first member, the second member can be fixed relative to the first member.

[0078] In the embodiments of the present application, the second mold body moves away from the second member along the mold opening direction, and the distance that the second mold body moves relative to the second member can be adjusted according to requirements. For example, in order to completely separate the second member and the workpiece, and at the same time reduce the energy consumption of the movement of the second mold body, the second mold body can move 150 millimeters relative to the second member.

[0079] In this embodiment, after the relative locking between the second member and the second mold body is released, since both the first member and the second member are relatively fixed with respect to the fixed seat, the second member will be fixed relative to the fixed seat. During the process that the second mold body moves away from the second member along the mold opening direction, the workpiece will move away from the second member along with the movement of the second mold body until the workpiece and the second member are separated.

[0080] In some possible embodiments of the present application, the mold further includes an ejection mechanism, and the ejection mechanism can move relative to the second mold body; as Figure 12 shown in, the above-mentioned S400 includes S410.

[0081] S410 controls the second mold body to move relative to the ejection mechanism along the mold opening direction, so that the ejection mechanism separates the workpiece relative to the second mold body.

[0082] In the embodiments of the present application, the ejection mechanism is used to eject the workpiece from the second mold body, and the area where the ejection mechanism contacts the workpiece can be set in the area of the second mold body corresponding to the first molding cavity, or can also be set in the area of the second mold body corresponding to the second molding cavity.

[0083] In the embodiments of the present application, the ejection mechanism can move relative to the second mold body, which means that as the second mold body moves in the mold opening direction, the ejection mechanism can provide a force to the workpiece away from the second mold body, thereby ejecting the workpiece from the second mold body.

[0084] In the embodiments of the present application, the second mold body moves relative to the ejection mechanism in the mold opening direction, and the distance that the second mold body moves relative to the ejection mechanism can be adjusted according to requirements. By way of example, in order to completely separate the second mold body from the workpiece and at the same time reduce the energy consumption of the movement of the second mold body, when the ejection mechanism is in contact with the workpiece, the second mold body can move a distance of 60 millimeters relative to the ejection mechanism to separate the workpiece from the second mold body.

[0085] In the embodiments of the present application, the ejection mechanism can move in the reverse direction relative to the second part, so as to provide a force to the workpiece away from the second mold body; the ejection mechanism can also be a structure arranged along the mold opening direction and fixed. After the ejection mechanism contacts the workpiece, as the second mold body moves in the mold opening direction, the second mold body will move relative to the ejection mechanism, so that the ejection mechanism provides a force to the workpiece away from the second mold body.

[0086] Referring to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the embodiments of the present application provide a mold, which includes: a first mold body 1 and a second mold body 2; the first mold body 1 includes a first member 11 and a second member 12; a first molding cavity is formed between the first member 11 and the second mold body 2, and a second molding cavity is formed between the second member 12 and the second mold body 2; at least along the mold opening direction B, the size of the first molding cavity is larger than the size of the second molding cavity, and the first member 11 and the second member 12 can move relative to each other along the mold opening direction B.

[0087] In the embodiments of the present application, the material is filled into the first molding cavity and the second molding cavity, and the shapes of the first molding cavity and the second molding cavity determine the shape of the workpiece 7 after molding. The first molding cavity can be one or multiple, the second molding cavity can be one or multiple, and the number of the first molding cavity and the second molding cavity can be adjusted according to the shape of the workpiece 7 to be processed.

[0088] By way of example, referring to Figure 8 , Figure 8 , the workpiece 7 provided in the embodiments of the present application is shown. The two ends of the workpiece 7 respectively have deep cavity structures 71. The size of the deep cavity structure 71 in the mold opening direction B is larger than the size of other structures of the workpiece 7 in the mold opening direction B, and the deep cavity structure 71 is formed corresponding to the first molding cavity; the other parts of the workpiece 7 are formed corresponding to the second molding cavity. By way of example, referring to Figure 9The depth of the deep cavity structure 71 is 58 mm, the narrowest width is 3.7 mm, and the widest width is 10.9 mm.

[0089] In the embodiments of the present application, with reference to Figure 2 , Figure 3 , Figure 4 and Figure 5 , the opening direction B of the first die body 1 and the second die body 2 is shown. After the workpiece 7 is formed in the mold, the first die body 1 and the second die body 2 will separate from each other. The opening direction B refers to the axial movement direction in which the first die body 1 and the second die body 2 separate.

[0090] In the embodiments of the present application, the mold further includes a fixed seat 4. The fixed seat 4 may include a first part 41 for setting the first component 11, and also includes a second part 42 for setting the second die body 2. The position of the first part 41 is fixed, and the second part 42 can drive the second die body 2 to move under the drive of the driving mechanism.

[0091] In the embodiments of the present application, along the opening direction B, the size of the first forming cavity is larger than that of the second forming cavity. Therefore, along the opening direction B, the size of the part of the workpiece 7 formed in the first forming cavity is larger than the size of the part of the workpiece 7 formed in the second forming cavity. Thus, the first forming cavity corresponds to a special shape on the workpiece 7. The special shape in the present application refers to a shape with a dimensional difference from other regions of the workpiece 7 (such as a deep cavity, a narrow slit, or a high rib, etc.).

[0092] In the embodiments of the present application, the first component 11 and the second component 12 can move relative to each other along the opening direction B. The first component 11 and the second component 12 can be connected by a structure of guide pillars and guide sleeves, so that the first component 11 and the second component 12 can slide relative to each other; the first component 11 and the second component 12 can also be connected by a slide rail and a moving part, enabling the first component 11 and the second component 12 to move relative to each other.

[0093] In the mold of the embodiments of the present application, since the first component 11 and the second component 12 can move relative to each other, the first component 11 and the second component 12 can move relative to the second die body 2 respectively, so as to realize the separation of the first component 11 and the second component 12 from the workpiece 7 respectively.

[0094] With reference to Figure 2 , Figure 3 , Figure 4 and Figure 5 , in some possible embodiments of the present application, the mold further includes a limiting member 6. One end of the limiting member 6 is fixedly connected to the first component 11, and the other end of the limiting member 6 is slidably connected to the second component 12 along the opening direction B; the second component 12 has a limiting portion 121, and the limiting member 6 can abut against the limiting portion 121 to limit the relative displacement amount of the first component 11 and the second component 12.

[0095] In the embodiments of the present application, the relative displacement amount between the first member 11 and the second member 12 refers to the displacement distance between the first member 11 and the second mold body 2 during the relative movement away from each other in the mold opening direction B. Taking the initial contact position of the first member 11 and the second mold body 2 (i.e., the mold closing state of the first member 11 and the second mold body 2) as a reference, during mold opening, the first member 11 and the second mold body 2 move away from each other in the mold opening direction B, and the sum of the moving distances between the first member 11 and the second mold body 2 is the relative displacement amount.

[0096] In the embodiments of the present application, with reference to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , a limiting space 122 is formed inside the second member 12. The limiting portion 121 is on the side of the limiting space 122 close to the first part 41 of the fixed seat 4. The second member 12 has an opening that communicates the limiting space 122 with the outside. The limiting member 6 is slidably connected to the second member 12 through the opening. One end of the limiting member 6 located inside the limiting space 122 has an abutting portion 61, and the radial dimension of the abutting portion 61 is greater than the radial dimension of other regions of the limiting member 6, so that the abutting portion 61 can abut against the limiting portion 121.

[0097] In the embodiments of the present application, the dimension of the limiting space 122 in the mold opening direction B can be greater than or equal to a preset threshold. Thus, during the relative movement of the first member 11 and the second member 12, the abutting portion 61 of the limiting member 6 moves from the side away from the limiting portion 121 towards the limiting portion 121, and the moving distance is the dimension of the limiting space 122 in the mold opening direction B (i.e., greater than or equal to the preset threshold). Therefore, when the abutting portion 61 abuts against the limiting portion 121, it indicates that the relative displacement amount between the movements of the first member 11 and the second member 12 is greater than or equal to the preset threshold, so that it can be determined that the first member 11 is completely separated from the workpiece 7.

[0098] Since the space in the deep cavity area of the workpiece 7 provided in the present application is small and the cooling water channels cannot be machined by traditional machining methods, but the workpiece 7 has requirements for the skin texture on the appearance during the machining process, and the skin texture pattern on the appearance of the workpiece 7 is related to the shape of the cooling water channels, etc. In order to improve the weld line (the visible line formed by the combination of plastics flowing in the mold), that is, the problem of skin texture blooming on the surface of the workpiece 7. In some possible embodiments of the present application, with reference to Figure 13 and Figure 14 , the first member 11 internally has a cooling channel 111 for accommodating a cooling medium, and the cooling medium is used to cool the workpiece 7; the first member 11 is formed by a layer-by-layer stacking method to form the cooling channel 111.

[0099] In the embodiments of the present application, Figure 13 The dashed line in the figure shows the cooling channel 111 inside the first member 11. When the cooling medium is disposed in the cooling channel 111, it can be used to cool the workpiece 7 located in the first molding cavity. The shape of the cooling channel 111 can be adjusted according to requirements, and the present application does not limit this.

[0100] Exemplarily, referring to Figure 14 , the cooling channel 111 provided in the embodiments of the present application includes a first channel 1111 and a second channel 1112. The inner diameter of the second channel 1112 is smaller than that of the first channel 1111. The first channel 1111 includes a first inlet 1111a and a second outlet 1112b. The second channel 1112 includes a second inlet 1112a and a second outlet 1112b. The first inlet and the second inlet 1112a are used for the cooling medium to flow into the cooling channel 111, and the first outlet 1111b and the second outlet 1112b are used for the cooling medium to flow out of the cooling channel 111.

[0101] In the embodiments of the present application, the first member 11 is formed by a layer-by-layer stacking method. The layer-by-layer stacking method can be 3D printing; it can also be formed by micro-EDM etching of metal sheets (such as copper, stainless steel, etc.), and then the metal sheets are stacked and formed by welding or gluing. Since the first member 11 is formed by a layer-by-layer stacking method, a first member 11 suitable for a deep cavity space with a small size can be manufactured, and a cooling water channel is arranged in the first molding cavity to cool the workpiece 7.

[0102] In some possible embodiments of the present application, the second mold body 2 is provided with an exhaust groove 123 corresponding to the outer wall of the first molding cavity, and the exhaust groove 123 communicates with the first molding cavity; and / or, the mold includes an ejection mechanism 5. The ejection mechanism 5 passes through the second mold body 2 to abut against the workpiece 7, and a gap is provided between the ejection mechanism 5 and the second mold body 2.

[0103] In the embodiments of the present application, referring to Figure 15 , the exhaust groove 123 is provided on the outer wall of the first molding cavity, and can communicate the first molding cavity with the outside, so that the gas can be discharged from the first molding cavity. The present application does not limit the size of the exhaust groove 123. Exemplarily, the depth of the exhaust groove 123 can be 0.01 mm to 0.03 mm, and the width can be 1 mm to 3 mm, so that the gas can be discharged while reducing the possibility of the material overflowing from the exhaust groove 123.

[0104] In the embodiments of the present application, the ejection mechanism 5 is used to eject the workpiece 7 from the second mold body 2. The area where the ejection mechanism 5 contacts the workpiece 7 can be set in the area of the second mold body 2 relative to the first molding cavity, or can also be set in the area of the second mold body 2 relative to the second molding cavity.

[0105] In the embodiment of the present application, the ejection mechanism 5 includes a plurality of ejector pins 51. For example, referring to Figure 15 , Figure 15 it is shown that in the area corresponding to the first molding cavity of the ejection mechanism 5, there are two ejector pins 51. There is a gap between the ejector pins 51 and the second mold body 2, and the size of the gap can be adjusted according to requirements. For example, the gap between the ejector pins 51 and the second mold body 2 is 0.02 mm to 0.1 mm, so that while the gas can be discharged, the possibility of the material overflowing from the gap can be reduced.

[0106] In the mold of the embodiment of the present application, an exhaust groove 123 and / or a gap is provided in the first molding cavity, which can discharge the air in the first molding cavity, thereby reducing the generation of air resistance, reducing the deformation and other conditions of the workpiece 7 molded in the first molding cavity due to gas accumulation, improving the molding rate of the workpiece 7, and also being able to balance the air pressure between the first molding cavity and the outside during the mold opening process, improving the integrity of the demolding of the workpiece 7.

[0107] In some possible embodiments of the present application, the mold includes a fixed seat 4. The first mold body 1 is arranged on the first part 41 of the fixed seat 4, the second mold body 2 is arranged on the second part 42 of the fixed seat 4. The first component 11 of the first mold body 1 is fixedly connected to the first part 41 through a hot runner plate 43. The second component 12 of the first mold body 1 is slidably connected to the first component 11 through a limiting member 6. The second component 12 is detachably connected to the second mold body 2, and the second mold body 2 is slidably connected to the ejection mechanism 5.

[0108] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A workpiece processing method, characterized in that, The workpiece processing method includes: Filling a material in a mold to form a workpiece, the mold including a first mold body and a second mold body, the first mold body including a first member and a second member, a first molding cavity being formed between the first member and the second mold body; a second molding cavity being formed between the second member and the second mold body; along the mold opening direction of the first mold body and the second mold body, the size of the first molding cavity being larger than the size of the second molding cavity; Controlling the first member and the second mold body to move relatively away from each other along the mold opening direction, so that the first member is separated from the workpiece; When the first member is completely separated from the workpiece, controlling the second member and the second mold body to move relatively away from each other along the mold opening direction, so that the second member is separated from the workpiece; When the second member is completely separated from the workpiece, controlling the second mold body and the workpiece to move relatively away from each other along the mold opening direction, so that the second mold body is separated from the workpiece.

2. The workpiece processing method according to claim 1, characterized in that, In the step of controlling the first member and the second mold body to move relatively away from each other along the mold opening direction, so that the first member is separated from the workpiece, the workpiece processing method includes: When the first member and the second mold body are moving relatively, controlling the second member and the second mold body to remain relatively stationary.

3. The workpiece processing method according to claim 2, characterized in that, In the step of, when the first member is completely separated from the workpiece, controlling the second member and the second mold body to move relatively away from each other along the mold opening direction, so that the second member is separated from the workpiece, the workpiece processing method includes: When the relative displacement amount is greater than or equal to a preset threshold, determining that the first member is completely separated from the workpiece.

4. The workpiece processing method according to any one of claims 1 to 3, characterized in that, The mold further includes a fixed seat; in the step of, when the first member and the second mold body are moving relatively, controlling the second member and the second mold body to remain relatively stationary, the workpiece processing method includes: Keeping the first member relatively fixed to the fixed seat, and keeping the second member and the second mold body relatively locked; Controlling the second mold body to move away from the first member along the mold opening direction, so that the first member is separated from the workpiece.

5. The workpiece processing method according to claim 4, characterized in that, In the step of, when the relative displacement amount is greater than or equal to a preset threshold, determining that the first member is completely separated from the workpiece, the workpiece processing method includes: Keeping both the first member and the second member relatively fixed to the fixed seat; Releasing the relative locking between the second member and the second mold body; Controlling the second mold body to move away from the second member along the mold opening direction, so that the second member is separated from the workpiece.

6. The workpiece processing method according to claim 5, characterized in that, The mold further includes an ejection mechanism, and the ejection mechanism is movable relative to the second mold body; In the step of, when the second member is completely separated from the workpiece, controlling the second mold body and the workpiece to move relatively away from each other along the mold opening direction, so that the second mold body is separated from the workpiece, the workpiece processing method includes: Control the movement of the second mold body relative to the ejection mechanism along the mold opening direction, so that the ejection mechanism separates the workpiece from the second mold body.

7. A mold, characterized in that, Applied to the workpiece processing method according to any one of claims 1 to 6; The mold includes: A first mold body, including a first member and a second member; A second mold body, a first molding cavity is formed between the first member and the second mold body, and a second molding cavity is formed between the second member and the second mold body; at least along the mold opening direction, the size of the first molding cavity is larger than the size of the second molding cavity, and the first member and the second member can move relative to each other along the mold opening direction.

8. The mold according to claim 7, characterized in that, It further includes a limiting member, one end of the limiting member is fixedly connected to the first member, and the other end of the limiting member is slidably connected to the second member along the mold opening direction; the second member has a limiting portion, and the limiting member can abut against the limiting portion to limit the relative displacement amount of the first member and the second member.

9. The mold according to claim 8, characterized in that, The first member has a cooling channel inside, the cooling channel is used to accommodate a cooling medium, and the cooling medium is used to cool the workpiece; the first member is formed by layer-by-layer stacking to form the cooling channel.

10. The mold according to claim 9, characterized in that, An exhaust groove is provided on the outer wall of the second mold body corresponding to the first molding cavity, and the exhaust groove communicates with the first molding cavity; and / or, the mold includes an ejection mechanism, the ejection mechanism passes through the second mold body to abut against the workpiece, and a gap is provided between the ejection mechanism and the second mold body.

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