Fragile workpiece rubber coating mold and injection molding machine

Abstract

The utility model relates to the technical field of injection molding, and particularly discloses a fragile workpiece rubber coating mold and an injection molding machine. The bottom die is mounted on the rack and used for clamping fragile workpieces; the two side dies are symmetrically arranged and are mounted on the rack in a sliding manner; the two top dies are mounted on the rack; the driving mechanism is used for driving the two side dies to slide on the rack by taking the center of the bottom die as a symmetric center and deviating from the center of the bottom die after the fragile workpiece is encapsulated, so that the side dies are separated from the fragile workpiece encapsulated under the condition that the top die is in contact with the top of the fragile workpiece encapsulated with the top die; the mold can effectively avoid the situation that the fragile workpiece subjected to rubber coating moves along with the side mold due to the fact that adhesive force exists between the fragile workpiece subjected to rubber coating and the side mold, and consequently the fragile workpiece accidentally deflects on the fragile workpiece rubber coating mold.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding, and particularly relates to a fragile workpiece encapsulation mold and an injection molding machine. Background Art

[0002] The relevant technology can first clamp the fragile workpiece using a fragile workpiece overmolding mold, and then use an injection molding machine to inject thermoplastic material into the fragile workpiece overmolding mold in a closed mold state to form a protective layer on the outside of the fragile workpiece, so as to avoid the fragile workpiece from breaking as much as possible. After the overmolding is completed, the relevant technology requires the use of an injection molding machine to open the overmolding mold for the fragile workpiece, and then the overmolded fragile workpiece is taken out manually or automatically. Since there is an adhesive force between the protective layer formed on the outside of the fragile workpiece and the overmolding mold for the fragile workpiece, the adhesive force is greater than the clamping force of the overmolding mold for the fragile workpiece on the fragile workpiece, that is, when the overmolding mold for the fragile workpiece is opened, the adhesive force may cause the overmolded fragile workpiece to move with the overmolding mold for the fragile workpiece. Therefore, when the overmolding mold for the fragile workpiece is opened, the fragile workpiece may be accidentally deflected on the overmolding mold for the fragile workpiece, resulting in the local force of the clamping end of the fragile workpiece being too large due to the accidental deflection of the fragile workpiece on the overmolding mold for the fragile workpiece, causing the fragile workpiece to break.

[0003] Therefore, the prior art needs to be improved and developed. It should be noted that the above information disclosed in this section is only used to understand the background of the concept of the utility model, and therefore may contain information that does not constitute prior art. Utility Model Content

[0004] The purpose of the present application is to provide a fragile workpiece overmolding mold and an injection molding machine, which can effectively avoid the situation where the fragile workpiece after the overmolding is completed moves with the side mold due to the adhesion between the fragile workpiece and the side mold, resulting in accidental deflection of the fragile workpiece on the fragile workpiece overmolding mold.

[0005] In a first aspect, the present application provides a fragile workpiece overmolding mold, which is used in an injection molding machine. The fragile workpiece overmolding mold includes:

[0006] frame;

[0007] Bottom die, mounted on the frame, used to clamp fragile workpieces;

[0008] Two side molds, symmetrically arranged and slidably mounted on the frame;

[0009] Two top molds, mounted on the frame;

[0010] The driving mechanism is used to drive the two side molds to slide on the frame away from the center of the bottom mold with the center of the bottom mold as the center of symmetry after the fragile workpiece is overmolded, so as to separate the side molds from the fragile workpiece after the overmolding is completed while the top mold remains in contact with the top of the fragile workpiece.

[0011] The present application provides a fragile workpiece encapsulation mold, which can separate the side molds from the fragile workpiece after the encapsulation by using a driving mechanism to drive the two side molds to slide away from the center of the bottom mold on the frame while the top mold remains in contact with the top of the fragile workpiece after the encapsulation. Because the top mold can fix the position of the fragile workpiece after the encapsulation before the side molds are separated from the fragile workpiece after the encapsulation, the present application can effectively avoid the situation where the fragile workpiece after the encapsulation follows the movement of the side molds due to the adhesion between the fragile workpiece after the encapsulation and the side molds, thereby effectively avoiding the situation where the fragile workpiece is accidentally deflected on the fragile workpiece encapsulation mold due to excessive local force at the clamping end of the fragile workpiece causing the fragile workpiece to break.

[0012] Furthermore, the frame includes a glue injection plate, a first mounting plate and a second mounting plate, the driving mechanism includes a first linear moving mechanism and a plurality of first inclined guide columns, one end of the first inclined guide column is fixed on the first mounting plate, and the other end of the first inclined guide column is inclined in a direction away from the bottom mold, the side mold is slidably mounted on the second mounting plate and is slidably connected to the first inclined guide column, the bottom mold is mounted on the second mounting plate, the first linear moving mechanism is installed on the injection molding machine, and the first linear moving mechanism is used to drive the second mounting plate to move toward or away from the first mounting plate, so that the side mold moves toward or away from the first mounting plate along the first inclined guide column.

[0013] Furthermore, the frame also includes a third mounting plate, and the fragile workpiece overmolding mold also includes a support assembly. The third mounting plate is connected to the first linear moving mechanism, the second mounting plate is fixedly connected to the third mounting plate, and the two ends of the support assembly are respectively fixedly connected to the second mounting plate and the third mounting plate.

[0014] The support assembly of this technical solution can support the second mounting plate. This technical solution can effectively avoid the situation where the second mounting plate is deformed due to excessive force applied to the second mounting plate during the injection molding process, resulting in defects in the protective layer outside the fragile workpiece.

[0015] Furthermore, the mold for encapsulating the fragile workpiece also includes an elastic element, the two ends of which are fixedly connected to the side mold and the top mold respectively. Before the side mold is separated from the encapsulated fragile workpiece, the elastic element is in a compressed state.

[0016] Since the two ends of the elastic element of the technical solution are fixedly connected to the side mold and the top mold respectively, and after the side mold is separated from the fragile workpiece that has been rubber-coated, the technical solution only needs to use the first linear moving mechanism to continue to drive the second mounting plate to move away from the first mounting plate to complete the separation of the top mold and the fragile workpiece that has been rubber-coated. Therefore, the technical solution is equivalent to setting an elastic element between the top mold and the side mold and using the first linear moving mechanism as a power source for separating the top mold from the fragile workpiece that has been rubber-coated. That is, the technical solution does not need to set a separate power source for separating the top mold from the fragile workpiece that has been rubber-coated, thereby effectively saving the production cost of the rubber-coated mold for fragile workpieces and simplifying the structure of the rubber-coated mold for fragile workpieces.

[0017] Furthermore, a second inclined guide column is fixed on the side mold, the top mold is slidingly connected to the second inclined guide column, one end of the second inclined guide column is fixed on the side mold, and the other end of the second inclined guide column is inclined away from the top mold, and the top mold has an opening that is gap-connected with the second inclined guide column when the two top molds are closed.

[0018] Since this technical solution can separate the rubber-coated fragile workpiece by swinging the top mold upward, this technical solution can effectively reduce the external force on the rubber-coated fragile workpiece in the same direction as the sliding direction of the side mold before the top mold is separated from the rubber-coated fragile workpiece, thereby further avoiding the situation where the rubber-coated fragile workpiece is accidentally deflected on the rubber-coated fragile workpiece mold.

[0019] Furthermore, the bottom mold includes a fourth mounting plate and a workpiece clamp, the fourth mounting plate is fixed on the second mounting plate, the workpiece clamp is fixed on the fourth mounting plate and its shape matches the shape of the clamping end of the fragile workpiece, and the fragile workpiece overmolding mold also includes a positioning rod, which is located in the workpiece clamp and can interfere with the inner wall of the clamping end of the fragile workpiece.

[0020] Furthermore, the fragile workpiece overmolding mold further comprises a plurality of guide assemblies, wherein the plurality of guide assemblies are arranged in a rectangular array on the first mounting plate and are slidably connected to the second mounting plate.

[0021] Furthermore, the bottom mold also includes a flexible part, which is arranged between the workpiece clamp and the fragile workpiece.

[0022] Furthermore, a plurality of drainage portions are provided on the side surface of the workpiece fixture.

[0023] In a second aspect, the present invention further provides an injection molding machine, which includes the fragile workpiece encapsulation mold provided in the first aspect.

[0024] The present application provides an injection molding machine, which can separate the side molds from the fragile workpiece after the rubber coating is completed by using a driving mechanism to drive the two side molds to slide away from the center of the bottom mold on the frame while the top mold remains in contact with the top of the fragile workpiece after the rubber coating is completed. Because the top mold can fix the position of the fragile workpiece after the rubber coating is completed before the side molds are separated from the fragile workpiece after the rubber coating is completed, the present application can effectively avoid the situation where the fragile workpiece after the rubber coating is completed follows the movement of the side molds due to the adhesion between the fragile workpiece after the rubber coating and the side molds, thereby effectively avoiding the situation where the fragile workpiece is accidentally deflected on the fragile workpiece mold due to excessive local force at the clamping end of the fragile workpiece causing the fragile workpiece to break.

[0025] As can be seen from the above, the utility model provides a fragile workpiece encapsulation mold and injection molding machine, which can separate the side molds from the fragile workpiece after the encapsulation by utilizing a driving mechanism to drive the two side molds to slide away from the center of the bottom mold on the frame while the top mold remains in contact with the top of the fragile workpiece after the encapsulation. Because the top mold can fix the position of the fragile workpiece after the encapsulation before the side molds are separated from the fragile workpiece after the encapsulation, the present application can effectively avoid the situation where the fragile workpiece after the encapsulation is accidentally deflected on the fragile workpiece encapsulation mold due to the adhesion between the fragile workpiece and the side molds, thereby effectively avoiding the situation where the fragile workpiece is accidentally deflected on the fragile workpiece encapsulation mold and the local force of the clamping end of the fragile workpiece is too large, causing the fragile workpiece to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a mold for encapsulating a fragile workpiece provided in an embodiment of the present application.

[0027] Figure 2 A schematic structural diagram of a fragile workpiece encapsulation mold provided in an embodiment of the present application, which does not include a glue injection plate and a first mounting plate.

[0028] Figure 3 A schematic diagram of the top structure of the top mold and side mold provided in an embodiment of the present application.

[0029] Figure 4 For the Figure 3 Schematic diagram of the cross-sectional structure of the AA section line.

[0030] Figure 5 A schematic structural diagram of the side mold provided in an embodiment of the present application.

[0031] Figure 6 A schematic structural diagram of the base mold provided in an embodiment of the present application.

[0032] Explanation of reference numbers: 1. Frame; 101. Glue injection plate; 102. First mounting plate; 103. Second mounting plate; 104. Third mounting plate; 2. Bottom mold; 201. Fourth mounting plate; 202. Workpiece fixture; 3. Fragile workpiece; 4. Side mold; 5. Top mold; 6. First inclined guide column; 7. Glue injection port; 8. Support assembly; 9. Elastic element; 10. Second inclined guide column; 11. Positioning rod; 12. Flexible part; 13. Drainage part; 14. Oil tank; 15. Protective layer; 16. Guide assembly. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0035] First, as Figures 1-4 As shown, the present application provides a fragile workpiece encapsulation mold, which is used in an injection molding machine. The fragile workpiece encapsulation mold includes:

[0036] Rack 1;

[0037] The bottom die 2 is mounted on the frame 1 and is used to clamp the fragile workpiece 3;

[0038] Two side molds 4 are symmetrically arranged and slidably mounted on the frame 1;

[0039] Two top molds 5 are installed on the frame 1;

[0040] The driving mechanism is used to drive the two side molds 4 to slide on the frame 1 away from the center of the bottom mold 2 with the center of the bottom mold 2 as the center of symmetry after the fragile workpiece 3 is overmolded, so as to separate the side molds 4 from the fragile workpiece 3 after the overmolding is completed.

[0041] Among them, the present application provides a fragile workpiece overmolding mold, which is used in an injection molding machine. The fragile workpiece overmolding mold is particularly suitable for overmolding glass bottles. Specifically, the clamping end of the glass bottle is the bottle mouth of the glass bottle. This embodiment can overmold the glass bottle by forming a protective layer 15 on the outer wall of the glass bottle except the bottle mouth using an injection molding machine and the fragile workpiece overmolding mold. This embodiment can use the injection molding machine to open or close the fragile workpiece overmolding mold and inject thermoplastic material into the fragile workpiece overmolding mold. The fragile workpiece overmolding mold of this embodiment includes a frame 1, a bottom mold 2, two side molds 4, and two top molds 5. Specifically, the symmetrical arrangement of the two side molds 4 of this embodiment essentially means that the mold cavities of the two side molds 4 are symmetrical. When the fragile workpiece overmolding mold is in the open mold state, the bottom mold 2, side molds 4, and top mold 5 are separated from each other. When the fragile workpiece overmolding mold is in the closed mold state, the bottom mold 2, side molds 4, and top mold 5 are closed. The side molds 4 of this embodiment are slidably mounted on the frame 1, that is, the side molds 4 of this embodiment can slide relative to the frame 1, the bottom mold 2, and the top mold 5. The driving mechanism of this embodiment can be a mechanism capable of driving an object to move, such as an electric cylinder or an oil cylinder. It should be understood that, since after the fragile workpiece 3 is coated with glue, there is an adhesive force between the coated fragile workpiece 3 and the side molds 4, when the driving mechanism drives the two side molds 4 to slide on the frame 1 with the center of the bottom mold 2 as the center of symmetry away from the center of the bottom mold 2, the side molds 4 will be subjected to an external force sufficient to overcome the adhesive force, and before the side molds 4 are separated from the fragile workpiece 3 that has been coated with glue, the top mold 5 maintains contact with the top of the fragile workpiece 3 that has been coated with glue to fix the position of the fragile workpiece 3 that has been coated with glue. Therefore, this embodiment can effectively avoid the situation where the fragile workpiece 3 that has been coated with glue follows the movement of the side molds 4 due to the adhesive force between the fragile workpiece 3 and the side molds 4, resulting in accidental deflection of the fragile workpiece 3 on the fragile workpiece coating mold. After the separation of the side molds 4 and the fragile workpiece 3 that has been coated with glue, this embodiment can be manually or automatically The top mold 5 is separated from the fragile workpiece 3 that has been glued. Since the contact area between the top mold 5 and the fragile workpiece 3 that has been glued is smaller than the contact area between the side mold 4 and the fragile workpiece 3 that has been glued, that is, the bonding force between the top mold 5 and the fragile workpiece 3 that has been glued is smaller than the bonding force between the side mold 4 and the fragile workpiece 3 that has been glued, the bonding force between the top mold 5 and the fragile workpiece 3 that has been glued is insufficient to overcome the clamping force of the bottom mold 2 on the fragile workpiece 3 that has been glued. Therefore, when the top mold 5 is separated from the fragile workpiece 3 that has been glued, the fragile workpiece 3 will not be accidentally deflected on the fragile workpiece glue-coated mold. That is, this embodiment is equivalent to first separating the side mold 4 from the fragile workpiece 3 that has been glued, and then separating the top mold 5 from the fragile workpiece 3 that has been glued, and during the entire separation process, the fragile workpiece 3 will not be accidentally deflected on the fragile workpiece glue-coated mold.

[0042] The specific process of encapsulating the fragile workpiece 3 in this embodiment can be: using an injection molding machine to close the mold for encapsulating the fragile workpiece; using the injection molding machine to inject thermoplastic material into the space surrounded by the top mold 5, the side mold 4 and the bottom mold 2; cooling the mold for encapsulating the fragile workpiece to form a protective layer 15 outside the fragile workpiece 3; using the injection molding machine to open the mold for encapsulating the fragile workpiece; using a driving mechanism to drive the two side molds 4 to slide on the frame 1 away from the center of the bottom mold 2 with the center of the bottom mold 2 as the center of symmetry, so as to separate the side molds 4 from the fragile workpiece 3 that has been encapsulated while the top mold 5 remains in contact with the top of the fragile workpiece 3 that has been encapsulated; separating the top mold 5 from the fragile workpiece 3 that has been encapsulated manually or automatically, and then taking out the fragile workpiece 3 that has been encapsulated.

[0043] The present application provides a fragile workpiece encapsulation mold, which can separate the side molds 4 from the fragile workpiece 3 that has been encapsulated by the glue by utilizing a driving mechanism to drive the two side molds 4 to slide away from the center of the bottom mold 2 on the frame 1 while the top mold 5 remains in contact with the top of the fragile workpiece that has been encapsulated. Since the top mold 5 can fix the position of the fragile workpiece 3 that has been encapsulated by the glue before the side molds 4 are separated from the fragile workpiece 3 that has been encapsulated by the glue, the present application can effectively avoid the situation where the fragile workpiece 3 that has been encapsulated by the glue moves with the side molds 4 due to the adhesion between the fragile workpiece 3 and the side molds 4, thereby effectively avoiding the situation where the fragile workpiece 3 is accidentally deflected on the fragile workpiece encapsulation mold and the local force at the clamping end of the fragile workpiece 3 is too large, causing the fragile workpiece 3 to break.

[0044] In some preferred embodiments, the frame 1 includes a glue injection plate 101, a first mounting plate 102, and a second mounting plate 103. The drive mechanism includes a first linear motion mechanism (not shown) and a plurality of first inclined guide posts 6. One end of the first inclined guide post 6 is fixed to the first mounting plate 102, and the other end of the first inclined guide post 6 is inclined in a direction away from the bottom mold 2. The side mold 4 is slidably mounted on the second mounting plate 103 and slidably connected to the first inclined guide posts 6. The bottom mold 2 is mounted on the second mounting plate 103. The first linear motion mechanism is mounted on the injection molding machine and is used to drive the second mounting plate 103 toward or away from the first mounting plate 102, thereby moving the side mold 4 toward or away from the first mounting plate 102 along the first inclined guide posts 6. The glue injection plate 101 of this embodiment has a glue injection port 7, through which the injection molding machine of this embodiment injects thermoplastic material into the space enclosed by the top mold 5, the side mold 4, and the bottom mold 2. Since the rectangular array of multiple first inclined guide columns 6 of this embodiment is on the first mounting plate 102, the side mold 4 of this embodiment is slidably mounted on the second mounting plate 103 and is slidably connected to the first inclined guide columns 6, that is, the side mold 4 of this embodiment can slide on the second mounting plate 103 along the first inclined guide columns 6. Therefore, this embodiment can drive the second mounting plate 103 away from the first mounting plate 102 by utilizing the first linear movement mechanism to move the side mold 4 away from the first mounting plate 102 along the first inclined guide columns 6. When the side mold 4 moves away from the first mounting plate 102 along the first inclined guide columns 6, the side mold 4 will move away from the fragile workpiece 3 that has been completed with the glue and be subjected to an external force sufficient to overcome the adhesive force between it and the fragile workpiece 3 that has been completed with the glue. Therefore, this embodiment can separate the side mold 4 from the fragile workpiece 3 that has been completed with the glue by moving the side mold 4 away from the first mounting plate 102 along the first inclined guide columns 6 while the top mold 5 remains in contact with the top of the fragile workpiece 3 that has been completed with the glue. Preferably, an oil groove 14 is provided on the second mounting plate 103 of this embodiment, and the oil groove 14 can prevent the side mold 4 from being burned when sliding on the second mounting plate 103.

[0045] In some preferred embodiments, the frame 1 further includes a third mounting plate 104, and the fragile workpiece overmolding mold further includes a support assembly 8. The third mounting plate 104 is connected to the first linear motion mechanism, and the second mounting plate 103 is fixedly connected to the third mounting plate 104. The ends of the support assembly 8 are respectively fixedly connected to the second mounting plate 103 and the third mounting plate 104. The support assembly 8 of this embodiment can support the second mounting plate 103, and this embodiment can effectively prevent the second mounting plate 103 from being deformed due to excessive force applied to the second mounting plate 103 during the injection molding process, thereby forming defects in the protective layer 15 on the outer surface of the fragile workpiece 3.

[0046] In some preferred embodiments, the fragile workpiece encapsulation mold further includes an elastic element 9, the two ends of which are fixedly connected to the side mold 4 and the top mold 5 respectively. Before the side mold 4 is separated from the fragile workpiece 3 that has been encapsulated, the elastic element 9 is in a compressed state. The elastic element 9 of this embodiment is preferably a spring. Specifically, before the side mold 4 is separated from the fragile workpiece 3 that has been rubber-coated, the elastic element 9 is in a compressed state. The elastic element 9 provides an elastic force toward the center of the top mold 5. The elastic force can prevent the position of the top mold 5 from changing, so that the top mold 5 maintains contact with the top of the fragile workpiece 3 that has been rubber-coated before the side mold 4 is separated from the fragile workpiece 3 that has been rubber-coated. After the side mold 4 is separated from the fragile workpiece 3 that has been rubber-coated, the elastic element 9 will be transformed into a natural state or a stretched state, and the first linear movement mechanism continues to drive the second mounting plate 103 to move away from the first mounting plate 102, so that the top mold 5 moves away from the fragile workpiece 3 that has been rubber-coated. Since the bonding force between the top mold 5 and the fragile workpiece 3 that has been rubber-coated is not sufficient to overcome the clamping force of the bottom mold 2 on the fragile workpiece 3 that has been rubber-coated, this embodiment can separate the top mold 5 from the fragile workpiece 3 that has been rubber-coated by moving the top mold 5 away from the fragile workpiece 3 that has been rubber-coated. Since the two ends of the elastic element 9 of this embodiment are fixedly connected to the side mold 4 and the top mold 5 respectively, and after the side mold 4 is separated from the fragile workpiece 3 that has been rubber-coated, this embodiment only needs to use the first linear moving mechanism to continue to drive the second mounting plate 103 to move away from the first mounting plate 102 to complete the separation of the top mold 5 from the fragile workpiece 3 that has been rubber-coated. Therefore, this embodiment is equivalent to setting the elastic element 9 between the top mold 5 and the side mold 4 and using the first linear moving mechanism as the power source for separating the top mold 5 from the fragile workpiece 3 that has been rubber-coated. That is, this embodiment does not need to set a separate power source for separating the top mold 5 from the fragile workpiece 3 that has been rubber-coated, thereby effectively saving the production cost of the rubber-coated mold for fragile workpieces and simplifying the structure of the rubber-coated mold for fragile workpieces.

[0047] In some preferred embodiments, a second inclined guide column 10 is fixed on the side mold 4, the top mold 5 is slidingly connected to the second inclined guide column 10, one end of the second inclined guide column 10 is fixed on the side mold, and the other end of the second inclined guide column 10 is inclined away from the top mold 5, and the top mold 5 has an opening that is gap-connected with the second inclined guide column 10 when the two top molds 5 are closed. Since the top mold 5 of this embodiment has an opening gap-connected with the second inclined guide column 10, before the side mold 4 is separated from the fragile workpiece 3 that has been rubber-coated, the second inclined guide column 10 does not conflict with the top mold 5, and the top mold 5 maintains contact with the top of the fragile workpiece 3 that has been rubber-coated. After the side mold 4 is separated from the fragile workpiece 3 that has been rubber-coated, the second inclined guide column 10 conflicts with the top mold 5. At this time, the top mold 5 will swing upward relative to the fragile workpiece 3 that has been rubber-coated under the action of the second inclined guide column 10. Since this embodiment can separate the fragile workpiece 3 that has been rubber-coated by making the top mold 5 swing upward, this embodiment can effectively reduce the external force on the fragile workpiece 3 that has been rubber-coated in the same direction as the sliding direction of the side mold 4 before the top mold 5 is separated from the fragile workpiece 3 that has been rubber-coated, thereby further avoiding the situation where the fragile workpiece 3 that has been rubber-coated is accidentally deflected on the fragile workpiece rubber-coating mold.

[0048] In some preferred embodiments, the base mold 2 includes a fourth mounting plate 201 and a workpiece clamp 202. The fourth mounting plate 201 is fixed to the second mounting plate 103. The workpiece clamp 202 is fixed to the fourth mounting plate 201 and its shape matches the shape of the clamping end of the fragile workpiece 3. The fragile workpiece overmolding mold further includes a positioning rod 11. The positioning rod 11 is located within the workpiece clamp 202 and can contact the inner wall of the clamping end of the fragile workpiece 3. Since the positioning rod 11 can fix the position of the fragile workpiece 3 when it contacts the inner wall of the clamping end of the fragile workpiece 3, this embodiment is equivalent to further preventing the fragile workpiece 3 from accidentally deflecting on the fragile workpiece overmolding mold by causing the positioning rod 11 to contact the inner wall of the clamping end of the fragile workpiece 3, thereby further preventing the fragile workpiece 3 from breaking due to excessive local force on the clamping end of the fragile workpiece 3 caused by accidental deflection of the fragile workpiece 3 on the fragile workpiece overmolding mold. Preferably, the number of the workpiece fixtures 202 in this embodiment is multiple, and each workpiece fixture 202 is provided with a positioning rod 11, that is, this embodiment is equivalent to encapsulating multiple fragile workpieces 3 at the same time, thereby effectively improving the encapsulation efficiency.

[0049] In some preferred embodiments, the fragile workpiece overmold further includes a plurality of guide assemblies 16 arranged in a rectangular array on the first mounting plate 102 and slidably connected to the second mounting plate 103. In this embodiment, the guide assemblies 16 are preferably guide posts, preferably four in number, and can guide the sliding movement of the second mounting plate 103.

[0050] In some preferred embodiments, the injection molding machine is further equipped with a second moving mechanism (not shown in the figures). The second moving mechanism is used to drive the positioning rod 11 to move toward the first mounting plate 102 after the top mold 5 is separated from the encapsulated fragile workpiece 3, so as to eject the encapsulated fragile workpiece 3 from the bottom mold 2. The injection molding machine of this embodiment is further equipped with a second moving mechanism. After the top mold 5 is separated from the encapsulated fragile workpiece 3, this embodiment can use the second moving mechanism to drive the positioning rod 11 to move toward the first mounting plate 102 to eject the encapsulated fragile workpiece 3 from the bottom mold 2. Therefore, this embodiment can effectively reduce the difficulty of unloading the encapsulated fragile workpiece 3, thereby effectively shortening the time required to unload the encapsulated fragile workpiece 3, and thereby effectively improving the encapsulation efficiency.

[0051] In some preferred embodiments, the bottom mold 2 further includes a flexible member 12, which is disposed between the workpiece fixture 202 and the fragile workpiece 3. Preferably, the workpiece fixture 202 of this embodiment is made of iron, and the flexible member 12 of this embodiment is made of rubber. Since the flexible member 12 of this embodiment is disposed between the workpiece fixture 202 and the fragile workpiece 3, the flexible member 12 can buffer and protect the fragile workpiece 3 when loading the fragile workpiece 3. Therefore, this embodiment can effectively prevent the fragile workpiece 3 from being broken due to hard contact between the fragile workpiece 3 and the workpiece fixture 202 when loading the fragile workpiece 3. Preferably, the side surface of the flexible member 12 of this embodiment is provided with multiple grooves. Since the side surface of the flexible member 12 is provided with multiple grooves, that is, the flexible member 12 can undergo a certain degree of deformation, even if there are tolerances for fragile workpieces 3 of the same specification, the bottom mold 2 of this embodiment can still clamp fragile workpieces 3 of that specification.

[0052] In some preferred embodiments, a plurality of drainage portions 13 are provided on the side of the workpiece fixture 202. The plurality of drainage portions 13 are provided on the side of the workpiece fixture 202 in this embodiment. The drainage portions 13 can drain the thermoplastic material injected by the injection molding machine. This embodiment can prevent bubbles from forming in the protective layer 15 outside the fragile workpiece 3 by providing the drainage portions 13 on the side of the workpiece fixture 202, thereby effectively improving the quality of the encapsulation.

[0053] From the above, it can be seen that the fragile workpiece encapsulation mold provided by the present application can separate the side mold 4 from the fragile workpiece 3 that has been encapsulated by the glue without changing the position of the top mold 5 by utilizing a driving mechanism to drive the side mold 4 to slide relative to the top mold 5 and the bottom mold 2. Since the top mold 5 can fix the position of the fragile workpiece 3 that has been encapsulated by the glue before the side mold 4 is separated from the fragile workpiece 3 that has been encapsulated by the glue, the present application can effectively avoid the situation where the fragile workpiece 3 that has been encapsulated by the glue follows the movement of the side mold 4 due to the adhesion between the fragile workpiece 3 and the side mold 4, thereby effectively avoiding the situation where the fragile workpiece 3 is accidentally deflected on the fragile workpiece encapsulation mold and the local force of the clamping end of the fragile workpiece 3 is too large, causing the fragile workpiece 3 to break.

[0054] In a second aspect, the present invention further provides an injection molding machine, which includes the fragile workpiece encapsulation mold provided in the first aspect.

[0055] An embodiment of the present application provides an injection molding machine, which includes the fragile workpiece rubber-coated mold provided by the first aspect above. The principle of the injection molding machine provided by this embodiment is the same as the principle of the fragile workpiece rubber-coated mold provided by the first aspect above, and will not be discussed in detail here.

[0056] As can be seen from the above, the utility model provides a fragile workpiece encapsulation mold and injection molding machine, which can separate the side mold 4 from the fragile workpiece 3 that has been encapsulated by the glue without changing the position of the top mold 5 by utilizing a driving mechanism to drive the side mold 4 to slide relative to the top mold 5 and the bottom mold 2. Since the top mold 5 can fix the position of the fragile workpiece 3 that has been encapsulated by the glue before the side mold 4 is separated from the fragile workpiece 3 that has been encapsulated by the glue, the present application can effectively avoid the situation where the fragile workpiece 3 that has been encapsulated by the glue follows the movement of the side mold 4 due to the adhesion between the fragile workpiece 3 and the side mold 4, resulting in accidental deflection of the fragile workpiece 3 on the fragile workpiece encapsulation mold, thereby effectively avoiding the situation where the fragile workpiece 3 is accidentally deflected on the fragile workpiece encapsulation mold and the local force of the clamping end of the fragile workpiece 3 is too large, resulting in the fragile workpiece 3 being broken.

[0057] Throughout this specification, reference to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0058] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A mold for encapsulating fragile workpieces, used in an injection molding machine, characterized in that: The fragile workpiece encapsulation mold comprises: frame; a bottom die, mounted on the frame, for clamping fragile workpieces; Two side molds are symmetrically arranged and slidably mounted on the frame; two top molds mounted on the frame; The driving mechanism is used to drive the two side molds to slide on the frame away from the center of the bottom mold with the center of the bottom mold as the center of symmetry after the fragile workpiece is overmolded, so as to separate the side molds from the fragile workpiece after the overmolding is completed.

2. The fragile workpiece encapsulation mold according to claim 1, characterized in that: The frame includes a glue injection plate, a first mounting plate and a second mounting plate, the driving mechanism includes a first linear motion mechanism and a plurality of first inclined guide columns, one end of the first inclined guide column is fixed to the first mounting plate, and the other end of the first inclined guide column is inclined in a direction away from the bottom mold, the side mold is slidably mounted on the second mounting plate and slidably connected to the first inclined guide column, the bottom mold is mounted on the second mounting plate, the first linear motion mechanism is mounted on the injection molding machine, and the first linear motion mechanism is used to drive the second mounting plate to move toward or away from the first mounting plate, so that the side mold moves toward or away from the first mounting plate along the first inclined guide column.

3. The fragile workpiece encapsulation mold according to claim 2, characterized in that: The frame also includes a third mounting plate, and the fragile workpiece overmolding mold also includes a support assembly. The third mounting plate is connected to the first linear motion mechanism, the second mounting plate is fixedly connected to the third mounting plate, and the two ends of the support assembly are respectively fixedly connected to the second mounting plate and the third mounting plate.

4. The fragile workpiece encapsulation mold according to claim 1, characterized in that: The fragile workpiece encapsulation mold further includes an elastic element, both ends of which are fixedly connected to the side mold and the top mold respectively. Before the side mold is separated from the encapsulated fragile workpiece, the elastic element is in a compressed state.

5. The fragile workpiece encapsulation mold according to claim 4, characterized in that: A second inclined guide column is fixed on the side mold, and the top mold is slidably connected to the second inclined guide column. One end of the second inclined guide column is fixed on the side mold, and the other end of the second inclined guide column is inclined away from the top mold. The top mold has an opening that is gap-connected with the second inclined guide column when the two top molds are closed.

6. The fragile workpiece overmolding mold according to claim 2, characterized in that: The base mold includes a fourth mounting plate and a workpiece clamp, the fourth mounting plate is fixed on the second mounting plate, the workpiece clamp is fixed on the fourth mounting plate and its shape matches the shape of the clamping end of the fragile workpiece, the fragile workpiece overmolding mold also includes a positioning rod, the positioning rod is located in the workpiece clamp, and the positioning rod can contact the inner wall of the clamping end of the fragile workpiece.

7. The fragile workpiece overmolding mold according to claim 2, characterized in that: The fragile workpiece overmolding mold further comprises a plurality of guide assemblies, wherein the plurality of guide assemblies are arranged in a rectangular array on the first mounting plate and are slidably connected to the second mounting plate.

8. The mold for overmolding a fragile workpiece according to claim 6, characterized in that: The bottom mold further includes a flexible member, which is arranged between the workpiece clamp and the fragile workpiece.

9. The fragile workpiece encapsulation mold according to claim 6, characterized in that: A plurality of drainage portions are provided on the side surface of the workpiece fixture.

10. An injection molding machine, characterized in that: The injection molding machine comprises the fragile workpiece encapsulation mold according to any one of claims 1 to 9.

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