Efficient injection mold structure

Abstract

The invention relates to the technical field of injection molds, in particular to an efficient injection mold structure. The efficient injection mold structure comprises a top mold assembly, a forming mold assembly, a sealing mold assembly, a fixed mold assembly, a mold control assembly and a limiting rod which are sequentially connected in a sliding mode. The injection molding part comprises an appearance surface and an inner cavity surface opposite to the appearance surface, and the inner cavity surface is provided with a water gap point; the top mold assembly is provided with an injection molding inlet, the forming mold assembly is provided with an inner mold core penetrating through the sealing mold assembly, and the fixed mold assembly is provided with a fixed mold core; a forming cavity is defined by the inner mold core, the sealing mold assembly, the fixed mold core and the fixed mold assembly. According to the efficient injection mold structure, multiple times of mold opening can be achieved, a drainage opening material can be taken out from a gap between the top mold assembly and the forming mold assembly, the production efficiency can be improved, and the efficient injection mold structure is high in reliability and small in size.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold, in particular to an efficient injection mold structure. BACKGROUND

[0002] A traditional mold for injection molding an injection molded part (the injection molded part includes an appearance surface and a cavity surface opposite to the appearance surface, and the cavity surface is provided with a gate point connected with a gate material) includes an upper mold and a lower mold. After the upper mold and the lower mold are separated, the injection molded part and the gate material are integrated, and the integrated injection molded part and the gate material need to be ejected by a ejector pin.

[0003] In the traditional mold for injection molding the injection molded part, the upper mold needs to move a large distance relative to the lower mold to take out the integrated injection molded part and the gate material, and conversely, the upper mold needs to move a large distance relative to the lower mold to reset, resulting in low production efficiency. In addition, the setting of the ejector pin structure leads to complex structure of the mold, low reliability, and low reliability of the mold. SUMMARY

[0004] An object of the present application is to solve or alleviate the above technical problems.

[0005] The present application adopts the following means: an efficient injection mold structure includes a top mold assembly, a forming mold assembly, a sealing mold assembly, a fixed mold assembly, a mold control assembly and a limiting rod connected in sequence. The injection mold structure is used for injection molding an injection molded part, and the injection molded part includes an appearance surface and a cavity surface opposite to the appearance surface, and the cavity surface is provided with a gate point. The top mold assembly is provided with an injection inlet, the forming mold assembly is provided with an inner mold core passing through the sealing mold assembly, and the fixed mold assembly is provided with a fixed mold core. The inner mold core, the sealing mold assembly, the fixed mold core and the fixed mold assembly jointly form a forming cavity. The inner mold core is used for forming the cavity surface, and the fixed mold core is used for forming the appearance surface, so that the inner mold core is closer to the injection inlet than the fixed mold core. The mold control assembly can control the time when the forming mold assembly and the sealing mold assembly can be separated. The limiting rod includes a top mold limiting rod, a sealing mold limiting rod and a fixed mold limiting rod. The top mold limiting rod is arranged on the top mold assembly and is used for limiting the maximum distance between the top mold assembly and the forming mold assembly to be greater than zero. The fixed mold limiting rod is arranged on the fixed mold assembly and is used for limiting the maximum distance between the sealing mold assembly and the fixed mold assembly to be greater than zero. The sealing mold limiting rod is used for limiting the maximum distance between the forming mold assembly and the sealing mold assembly.

[0006] The present application has the following effects: multiple mold opening can be realized, the gate material can be taken out from the gap between the top mold assembly and the forming mold assembly, the production efficiency is improved, and the efficient injection mold structure has high reliability and small size.

[0007] Further, the maximum distance between the forming die assembly and the sealing die assembly is greater than zero, and the injection molded part further comprises a side wall of the injection molded part extending to the injection molded part inlet; the inner mold core protrudes downward and the fixed mold core is concave downward.

[0008] The technical scheme can realize automatic demolding of the injection molded part provided with the side wall of the injection molded part.

[0009] Further, the bottom end surface of the ejector die assembly is provided with a sprue projection; the top end surface of the forming die assembly and / or the bottom end surface of the ejector die assembly is provided with a sprue groove, and the sprue projection is located in the sprue groove and the cross-sectional area of the sprue projection gradually decreases from bottom to top.

[0010] The technical scheme can make the sprue be extracted from the sprue groove and the bottom end of the sprue be disconnected from the injection molded part without the ejector pin, thereby facilitating improvement of production efficiency and reliability.

[0011] Further, the mold control assembly comprises a forming die control rod and a control member in transverse linear sliding connection with the sealing die assembly; the control member is provided with a forming die control rod groove and a locking body, the forming die control rod is fixedly connected with the forming die assembly and is provided with a control projection, and the control projection can abut against the bottom end surface of the locking body.

[0012] The technical scheme can conveniently control the moment when the forming die assembly and the sealing die assembly are separated.

[0013] Further, the sealing die assembly is fixedly provided with a transverse moving frame, the transverse moving frame is provided with a transverse moving sliding groove, and the control member is arranged in the transverse moving sliding groove and is in transverse linear sliding connection with the sealing die assembly.

[0014] The technical scheme facilitates the arrangement and installation of the mold control assembly.

[0015] Further, the mold control assembly further comprises an ejector die control rod fixedly connected with the ejector die assembly, the control member is further provided with an ejector die control rod groove, the locking body is located between the ejector die control rod groove and the forming die control rod groove, and the ejector die control rod can be inserted into the ejector die control rod groove and abut against the side wall of the ejector die control rod groove.

[0016] The technical scheme can ensure that the forming die assembly and the sealing die assembly abut against each other in the completely closed mold state, thereby ensuring the quality of injection molding.

[0017] Further, the mold control assembly further comprises an elastic member, the elastic member is connected with the sealing die assembly and the control member respectively, and the locking body has a tendency to move away from the control projection in the transverse direction.

[0018] The technical scheme can control the moment when the forming die assembly and the sealing die assembly are separated according to the movement of the ejector die assembly, and the reliability is high.

[0019] Further technical solutions, at least one of the bottom end of the ejector control rod, the top end of the side wall of the ejector control rod slot is provided with a guide slope.

[0020] This technical solution can ensure the reset of the ejector assembly.

[0021] Further technical solutions, at least one of the bottom end of the ejector control rod, the top end of the side wall of the ejector control rod slot is provided with a guide slope.

[0022] This technical solution can ensure the reset of the ejector assembly.

[0023] Further technical solutions, the mold control assembly further comprises a fixed mold control rod fixedly connected with the fixed mold assembly; the fixed mold control rod can be inserted into the forming mold control rod slot.

[0024] This technical solution can ensure that the forming mold assembly and the sealing mold assembly are in close contact when the mold is completely closed, ensuring the quality of injection molding. BRIEF DESCRIPTION OF DRAWINGS

[0025] The completely closed mold state (first state) is shown in Figure 1 , 3 , 6 to 10.

[0026] The ejector rod lifting state (second state) is shown in Figure 11 .

[0027] The half-open mold state (third state) is shown in Figure 12 .

[0028] The completely open mold state (fourth state) is shown in Figure 2 , 13 to 16.

[0029] Only Figure 1 the locking rod 49 is drawn, and the locking rod 49 is not drawn in other drawings.

[0030] Figure 1 is a three-dimensional schematic view of the high-efficiency injection mold structure of the embodiment of the present application Figure 1 .

[0031] Figure 2 is a three-dimensional schematic view of the high-efficiency injection mold structure of the embodiment of the present application Figure 2 .

[0032] Figure 3 is a top view of the high-efficiency injection mold structure of the embodiment of the present application.

[0033] Figure 4 is a three-dimensional schematic view of the injection molded part 9 of the embodiment of the present application Figure 1 .

[0034] Figure 5 is a perspective view of an injection molded piece 9 of an embodiment of the present invention Figure 2 .

[0035] Figure 6 is a schematic of section one SEC1 Figure 1 .

[0036] Figure 7 is a schematic of section two SEC2 Figure 1 .

[0037] Figure 8 is a schematic of detail one DTL1

[0038] Figure 9 is a schematic of section three SEC3 Figure 1 .

[0039] Figure 10 is a schematic of detail two DTL2

[0040] Figure 11 is a schematic of section one SEC1 Figure 2 .

[0041] Figure 12 is a schematic of section one SEC1 Figure 3 .

[0042] Figure 13 is a schematic of section one SEC1 Figure 4 .

[0043] Figure 14 is a schematic of section two SEC2 Figure 2 .

[0044] Figure 15 is a schematic of section three SEC3 Figure 2 .

[0045] Figure 16 is a schematic of detail three DTL3; arrow one ARR1 indicates the direction of the lateral movement of the control piece 53 to disengage the control piece 53 from the control protrusion 521; arrow two ARR2 indicates the reverse direction to allow the movement of the molding module assembly 2 and the molding module control rod 52 after the control piece 53 is disengaged from the control protrusion 521.

[0046] Figure 17 is a perspective view of a control piece 53 of an embodiment of the present invention;

[0047] the drawing figure that best illustrates the technical features of the present invention is Figure 2 .

[0048] Arrow one ARR1; arrow two ARR2; section one SEC1; section two SEC2; section three SEC3; detail one DTL1; detail two DTL2; detail three DTL3; top die assembly 1; injection inlet 11; nozzle material bump 12; nozzle material needle 121; forming die assembly 2; inner die core 21; sealing die assembly 3; outer die core 31; fixed die assembly 4; fixed die core 41; locking rod 49; mold control assembly 5; top die control rod 51; forming die control rod 52; control bump 521; control 53; top die control rod slot 531; forming die control rod slot 532; locking body 533; elastic member 534; transverse sliding slot 538; transverse frame 539; fixed die control rod 54; guide slope 59; limiting rod 6; top die limiting rod 61; sealing die limiting rod 63; fixed die limiting rod 64; guide rod 7; guide rod sleeve 71; nozzle material groove 8; injection part 9; appearance surface 91; inner cavity surface 92; nozzle point 921; nozzle material 929; injection part side wall 93. DETAILED DESCRIPTION

[0049] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0050] As a specific example, the efficient injection mold structure of the embodiments of the present application includes the top die assembly 1, the forming die assembly 2, the sealing die assembly 3, the fixed die assembly 4, the mold control assembly 5 and the limiting rod 6 which are sequentially and slidingly connected. For example, the guide rod 7 is fixedly connected with the top die assembly 1, the forming die assembly 2, the sealing die assembly 3 and the fixed die assembly 4 are all provided with the guide rod sleeve 71, and the guide rod 7 sequentially and abuttingly passes through the guide rod sleeve 71 of the forming die assembly 2, the guide rod sleeve 71 of the sealing die assembly 3 and the guide rod sleeve 71 of the fixed die assembly 4, so that the top die assembly 1, the forming die assembly 2, the sealing die assembly 3 and the fixed die assembly 4 are sequentially and slidingly arranged.

[0051] It should be noted that the following is described by taking the fixed die assembly 4 as an example, but this does not mean that the fixed die assembly 4 is fixed, and the forming die assembly 2, the sealing die assembly 3 and the fixed die assembly 4 can move. The fixed die assembly 4 can also be movable, and it is only necessary to be fixed relative to the forming die assembly 2, the sealing die assembly 3 and the fixed die assembly 4.

[0052] As a specific example, the efficient injection mold structure of the embodiments of the present application is used for injection molding of the injection part 9, and the injection part 9 includes the appearance surface 91 and the inner cavity surface 92 opposite to the appearance surface 91, and the inner cavity surface 92 is provided with the nozzle point 921. It is easy to understand that the nozzle point 921 is the connection point of the nozzle material 929 on the inner cavity surface 92.

[0053] The top die assembly 1 is provided with the injection inlet 11, the forming die assembly 2 is provided with the inner die core 21 which passes through the sealing die assembly 3, and the fixed die assembly 4 is provided with the fixed die core 41.

[0054] The inner mold cavity 21, the sealing mold assembly 3, the fixed mold cavity 41 and the fixed mold assembly 4 form a molding cavity. It is easy to understand that the high-temperature fluid plastic is injected into the injection inlet 11, the high-temperature fluid plastic enters the molding cavity through the gate 8 described later, and the plastic in the molding cavity is the injection part 9 and the plastic in the gate 929 is the gate 929 after the high-temperature fluid plastic is cooled.

[0055] The inner mold cavity 21 is used for forming the inner cavity surface 92, and the fixed mold cavity 41 is used for forming the appearance surface 91, so that the inner mold cavity 21 is closer to the injection inlet 11 than the fixed mold cavity 41. It is easy to understand that the gate 8 must be communicated with the molding cavity to input the high-temperature fluid plastic into the molding cavity, so the gate 929 must also be closer to the injection inlet 11 than the fixed mold cavity 41.

[0056] The mold control assembly 5 can control the separation time between the molding mold assembly 2 and the sealing mold assembly 3. For example, an electromagnet is arranged on the molding mold assembly 2 by electricity, and the electromagnet is attracted to the sealing mold assembly 3 when powered on, and the molding mold assembly 2 and the sealing mold assembly 3 cannot be separated; the electromagnet can be separated when the electromagnet is powered off.

[0057] The limiting rod 6 includes a top mold limiting rod 61, a sealing mold limiting rod 63, and a fixed mold limiting rod 64; the top mold limiting rod 61 is arranged on the top mold assembly 1 and is used to limit the maximum distance between the top mold assembly 1 and the molding mold assembly 2 to be greater than zero; the fixed mold limiting rod 64 is arranged on the fixed mold assembly 4 and is used to limit the maximum distance between the sealing mold assembly 3 and the fixed mold assembly 4 to be greater than zero; the sealing mold limiting rod 63 is used to limit the maximum distance between the molding mold assembly 2 and the sealing mold assembly 3. For example, the top mold limiting rod 61 is a bolt, one end of which is threadedly connected with the top mold assembly 1, and the end where the bolt head is located can abut against the molding mold assembly 2 to limit the maximum distance between the top mold assembly 1 and the molding mold assembly 2 to be greater than zero; the fixed mold limiting rod 64 and the sealing mold limiting rod 63 can also limit the maximum distance by bolts. It is easy to understand that the maximum distance between the molding mold assembly 2 and the sealing mold assembly 3 can be zero, so that the molding mold assembly 2 and the sealing mold assembly 3 are fixed; the maximum distance between the molding mold assembly 2 and the sealing mold assembly 3 can also be greater than zero, so that the molding mold assembly 2 and the sealing mold assembly 3 can be separated.

[0058] The working principle is as follows: Figure 6 , 7As shown, this is the fully closed mold state (first state); the top mold assembly 1, the forming mold assembly 2, the sealing mold assembly 3, and the fixed mold assembly 4 are sequentially attached. As described above, injecting the fluid plastic at a high temperature into the injection inlet 11 will form the sprue 929 and the injection molded part 9. To facilitate transportation, the locking rod 49 connecting the top mold assembly 1 and the fixed mold assembly 4 at both ends can be provided to ensure that the top mold assembly 1 and the fixed mold assembly 4 are connected. However, in the fully closed mold state (first state), the locking rod 49 is not required.

[0059] As shown, this is the fully closed mold state (first state); the top mold assembly 1, the forming mold assembly 2, the sealing mold assembly 3, and the fixed mold assembly 4 are sequentially attached. As described above, injecting the fluid plastic at a high temperature into the injection inlet 11 will form the sprue 929 and the injection molded part 9. To facilitate transportation, the locking rod 49 connecting the top mold assembly 1 and the fixed mold assembly 4 at both ends can be provided to ensure that the top mold assembly 1 and the fixed mold assembly 4 are connected. However, in the fully closed mold state (first state), the locking rod 49 is not required. Figure 11 As shown, this is the fully closed mold state (first state); the top mold assembly 1, the forming mold assembly 2, the sealing mold assembly 3, and the fixed mold assembly 4 are sequentially attached. As described above, injecting the fluid plastic at a high temperature into the injection inlet 11 will form the sprue 929 and the injection molded part 9. To facilitate transportation, the locking rod 49 connecting the top mold assembly 1 and the fixed mold assembly 4 at both ends can be provided to ensure that the top mold assembly 1 and the fixed mold assembly 4 are connected. However, in the fully closed mold state (first state), the locking rod 49 is not required.

[0060] Figure 12 As shown, this is the fully closed mold state (first state); the top mold assembly 1, the forming mold assembly 2, the sealing mold assembly 3, and the fixed mold assembly 4 are sequentially attached. As described above, injecting the fluid plastic at a high temperature into the injection inlet 11 will form the sprue 929 and the injection molded part 9. To facilitate transportation, the locking rod 49 connecting the top mold assembly 1 and the fixed mold assembly 4 at both ends can be provided to ensure that the top mold assembly 1 and the fixed mold assembly 4 are connected. However, in the fully closed mold state (first state), the locking rod 49 is not required.

[0061] As shown, this is the fully closed mold state (first state); the top mold assembly 1, the forming mold assembly 2, the sealing mold assembly 3, and the fixed mold assembly 4 are sequentially attached. As described above, injecting the fluid plastic at a high temperature into the injection inlet 11 will form the sprue 929 and the injection molded part 9. To facilitate transportation, the locking rod 49 connecting the top mold assembly 1 and the fixed mold assembly 4 at both ends can be provided to ensure that the top mold assembly 1 and the fixed mold assembly 4 are connected. However, in the fully closed mold state (first state), the locking rod 49 is not required. Figure 13 14 As shown, this is the fully closed mold state (first state); the top mold assembly 1, the forming mold assembly 2, the sealing mold assembly 3, and the fixed mold assembly 4 are sequentially attached. As described above, injecting the fluid plastic at a high temperature into the injection inlet 11 will form the sprue 929 and the injection molded part 9. To facilitate transportation, the locking rod 49 connecting the top mold assembly 1 and the fixed mold assembly 4 at both ends can be provided to ensure that the top mold assembly 1 and the fixed mold assembly 4 are connected. However, in the fully closed mold state (first state), the locking rod 49 is not required.

[0062] As shown, this is the fully closed mold state (first state); the top mold assembly 1, the forming mold assembly 2, the sealing mold assembly 3, and the fixed mold assembly 4 are sequentially attached. As described above, injecting the fluid plastic at a high temperature into the injection inlet 11 will form the sprue 929 and the injection molded part 9. To facilitate transportation, the locking rod 49 connecting the top mold assembly 1 and the fixed mold assembly 4 at both ends can be provided to ensure that the top mold assembly 1 and the fixed mold assembly 4 are connected. However, in the fully closed mold state (first state), the locking rod 49 is not required.

[0063] ​​In the fully open mold state (fourth state), where the maximum distance between the forming mold assembly 2 and the sealing mold assembly 3 is greater than zero, allowing them to separate, this applies to the injection molded part 9, which also includes the injection molded part sidewall 93 extending towards the injection inlet 11. It is easy to understand that in this case, the inner wall of the injection molded part sidewall 93 is in contact with the sidewall of the inner mold core 21 (the inner mold core 21 protrudes downwards and the fixing mold core 41 is recessed downwards), causing the injection molded part 9 to move upwards along with the forming mold assembly 2 and the inner mold core 21. In this case, the top mold assembly 1 drives the forming mold assembly 2 to continue moving upwards, causing the forming mold assembly 2 and the inner mold core 21 to move upwards relative to the sealing mold assembly 3. The outer mold core 31 abuts against the top of the injection molded part sidewall 93, causing the inner wall of the injection molded part sidewall 93 to separate from the sidewall of the inner mold core 21, thereby enabling automatic demolding of the injection molded part 9 with the injection molded part sidewall 93. After demolding, the injection molded part 9 can be caught by a robot and removed from the sealing mold assembly 3 and the fixed mold assembly 4.

[0064] It is easy to understand that the process of reversing the above process can make the efficient injection mold structure of the embodiment of the present invention reset from the fully open mold state (fourth state) to the fully closed mold state (first state) in sequence, so as to perform the next injection molding.

[0065] like Figure 2 , 8 As shown, in one specific embodiment, the bottom end face of the top mold assembly 1 is provided with a sprue protrusion 12; the top end face of the forming mold assembly 2 and / or the bottom end face of the top mold assembly 1 are provided with a sprue groove 8, the sprue protrusion 12 is located in the sprue groove 8 and its cross-sectional area gradually decreases from bottom to top. For example, the top mold assembly 1 is provided with a sprue needle 121, the bottom end of the sprue needle 121 protrudes from the bottom end face of the top mold assembly 1, and the bottom end of the sprue needle 121 is a frustum shape with a smaller top diameter and a larger bottom diameter, the cross-section of which is circular and the area gradually decreases from bottom to top. During the separation of the top mold assembly 1 and the forming mold assembly 2, the sprue protrusion 12 moves the sprue 929 upward, causing the bottom end of the sprue 929 to separate from the injection molded part 9 (the cross-section at the junction of the sprue point 921 and the injection molded part 9 is relatively small, and the plastic strength at this point is low, making it easier to break). The top mold assembly 1 also moves the sprue 929, causing it to be extracted from the sprue groove 8. This embodiment eliminates the need for ejector pins to extract the sprue 929 from the sprue groove 8 and separate its bottom end from the injection molded part 9, thus improving production efficiency and reliability. Alternatively, the sprue 929 can be moved downward with greater force (e.g., by a robotic arm or other mechanical device) to deform it, allowing it to be removed from the sprue protrusion 12.

[0066] As one specific implementation, the efficient injection mold structure of this embodiment includes a mold control assembly 5 comprising a forming mold control rod 52 and a control component 53 that is laterally linearly slidably connected to the sealing mold assembly 3. The control component 53 is provided with a forming mold control rod groove 532 and a locking body 533. The forming mold control rod 52 is fixedly connected to the forming mold assembly 2 and is provided with a control protrusion 521, which can abut against the bottom end face of the locking body 533. By controlling the lateral movement of the forming mold control rod 52 with a cylinder or the like, the control protrusion 521 and the locking body 533 are misaligned, allowing the forming mold assembly 2 and the sealing mold assembly 3 to separate, thereby enabling convenient control of the timing of separation between the forming mold assembly 2 and the sealing mold assembly 3.

[0067] As one specific implementation method, the sealing mold assembly 3 is fixedly provided with a transverse frame 539, the transverse frame 539 is provided with a transverse sliding groove 538, and the control component 53 is disposed in the transverse sliding groove 538 and is transversely linearly slidably connected to the sealing mold assembly 3. This facilitates the setting and installation of the mold control component 5.

[0068] As one specific implementation, the mold control assembly 5 also includes a top mold control rod 51 fixedly connected to the top mold assembly 1. The control component 53 is also provided with a top mold control rod groove 531. The locking body 533 is located between the top mold control rod groove 531 and the forming mold control rod groove 532. The top mold control rod 51 can be inserted into the top mold control rod groove 531 and fit against the side wall of the top mold control rod groove 531. Figure 10 As shown, in the fully closed mold state (first state), the top mold control rod 51 is inserted into the top mold control rod slot 531 and fits against the side wall of the top mold control rod slot 531. At this time, the top mold control rod slot 531 cannot move laterally, and the control protrusion 521 cannot be misaligned with the locking body 533. This ensures that the forming mold assembly 2 and the sealing mold assembly 3 fit together in the fully closed mold state (first state), thus ensuring the quality of injection molding.

[0069] As one specific implementation, the mold control assembly 5 also includes an elastic element 534, which is connected to the sealing mold assembly 3 and the control element 53, respectively, so that the locking body 533 tends to move laterally away from the control protrusion 521. For example, the elastic element 534 is a spring and its two ends abut against the inner walls of the top mold control rod groove 531 and the transverse frame 539, respectively. When the top mold assembly 1 and the top mold control rod 51 move upward, the top mold control rod 51 is pulled out from the top mold control rod groove 531. At this time, the top mold control rod groove 531 moves laterally under the action of the elastic element 534, so that the control protrusion 521 and the locking body 533 are misaligned, and the forming mold assembly 2 and the sealing mold assembly 3 can be separated. The separation time between the forming mold assembly 2 and the sealing mold assembly 3 can be controlled according to the movement of the top mold assembly 1 without the need for an electrical control device, which has high reliability.

[0070] As one of the specific embodiments, at least one of the bottom end of the top die control rod 51 and the top end of the side wall of the top die control rod slot 531 is provided with a guide slope 59. When the top die assembly 1 and the top die control rod 51 move downward, the guide slope 59 abuts against the bottom end of the top die control rod 51 or the top end of the side wall of the top die control rod slot 531, so that the control member 53 is allowed to move laterally against the elastic force of the elastic member 534, the top die control rod 51 is allowed to be inserted into the top die control rod slot 531, and the reset of the top die assembly 1 can be ensured.

[0071] As one of the specific embodiments, at least one of the bottom end of the top die control rod 51 and the top end of the side wall of the top die control rod slot 531 is provided with a guide slope 59. When the top die assembly 1 and the top die control rod 51 move downward, the guide slope 59 abuts against the bottom end of the top die control rod 51 or the top end of the side wall of the top die control rod slot 531, so that the control member 53 is allowed to move laterally against the elastic force of the elastic member 534, the top die control rod 51 is allowed to be inserted into the top die control rod slot 531, and the reset of the top die assembly 1 can be ensured.

[0072] As one of the specific embodiments, the mold control assembly 5 further comprises a fixed die control rod 54 fixedly connected with the fixed die assembly 4; the fixed die control rod 54 can be inserted into the top die control rod slot 532. When the complete mold closing state (the first state) is ensured, the top die assembly 2 and the sealing die assembly 3 are ensured to be in close contact, and the quality of injection molding is ensured.

[0073] As used in the present application, the terms "first", "second", and the like, do not denote any order, quantity, or importance, but are only used for differentiation.

[0074] As used in the present application, the terms "one", "an", and the like, do not denote a quantity limitation, but denote the existence of at least one of the mentioned objects.

[0075] As used in the present application, the terms indicating orientation or position, such as "top", "bottom", "side", "longitudinal", "transverse", "middle", "center", "outer", "inner", "horizontal", "vertical", "left", "right", "above", "below", and the like, mean to reflect relative position, not absolute position.

[0076] As used in the present application, the terms "approximately", "substantially", "about", "roughly", and the like, are defined terms indicating the existence of a feature but allowing a certain deviation. The amount of the allowed deviation can vary depending on the specific context; for example, the deviation for the size can depend on the relevant standards of the dimensional tolerance of the specific context, but is not limited thereto.

Claims

1. An efficient injection mold structure, comprising a top mold assembly (1), a forming mold assembly (2), a sealing mold assembly (3), a fixed mold assembly (4), a mold control assembly (5) and a limiting rod (6) connected in sequence by sliding; for injection molding of an injection molded part (9), the injection molded part (9) comprises an appearance surface (91) and a cavity surface (92) opposite to the appearance surface (91), and the cavity surface (92) is provided with a gate point (921); the top mold assembly (1) is provided with an injection inlet (11), the forming mold assembly (2) is provided with an inner mold core (21) penetrating through the sealing mold assembly (3), and the fixed mold assembly (4) is provided with a fixed mold core (41); the inner mold core (21), the sealing mold assembly (3), the fixed mold core (41) and the fixed mold assembly (4) jointly form a forming cavity; characterized in that the inner mold core (21) is used for forming the cavity surface (92), and the fixed mold core (41) is used for forming the appearance surface (91), so that the inner mold core (21) is closer to the injection inlet (11) than the fixed mold core (41); the mold control assembly (5) can control the time when the forming mold assembly (2) and the sealing mold assembly (3) can be separated; the limiting rod (6) comprises a top mold limiting rod (61), a sealing mold limiting rod (63) and a fixed mold limiting rod (64); the top mold limiting rod (61) is arranged on the top mold assembly (1) and is used for limiting a maximum distance greater than zero between the top mold assembly (1) and the forming mold assembly (2); the fixed mold limiting rod (64) is arranged on the fixed mold assembly (4) and is used for limiting a maximum distance greater than zero between the sealing mold assembly (3) and the fixed mold assembly (4); and the sealing mold limiting rod (63) is used for limiting a maximum distance between the forming mold assembly (2) and the sealing mold assembly (3).

2. The high efficiency injection mold structure of claim 1, wherein The maximum distance between the forming mold assembly (2) and the sealing mold assembly (3) is greater than zero, and the injection molded part (9) further comprises an injection molded part side wall (93) extending to the injection inlet (11); the inner mold core (21) is protruded downward, and the fixed mold core (41) is recessed downward.

3. The high efficiency injection mold structure of claim 1 wherein, The bottom end surface of the top mold assembly (1) is provided with a gate material protrusion (12); the top end surface of the forming mold assembly (2) and / or the bottom end surface of the top mold assembly (1) is provided with a gate material groove (8), and the gate material protrusion (12) is located in the gate material groove (8) and the cross-sectional area thereof gradually decreases from bottom to top.

4. The high efficiency injection mold structure of claim 2, wherein The mold control assembly (5) comprises a forming mold control rod (52) and a control piece (53) transversely and linearly slidingly connected with the sealing mold assembly (3); the control piece (53) is provided with a forming mold control rod groove (532) and a locking body (533), the forming mold control rod (52) is fixedly connected with the forming mold assembly (2) and is provided with a control protrusion (521), and the control protrusion (521) can abut against the bottom end surface of the locking body (533).

5. The high efficiency injection mold structure of claim 4, wherein, The sealing mold assembly (3) is fixedly provided with a transverse frame (539), the transverse frame (539) is provided with a transverse sliding groove (538), and the control piece (53) is arranged in the transverse sliding groove (538) to be transversely and linearly slidingly connected with the sealing mold assembly (3).

6. The high efficiency injection mold structure of claim 5, wherein, The die control assembly (5) further comprises a top die control rod (51) fixedly connected with the top die assembly (1), the control member (53) is further provided with a top die control rod slot (531), the locking body (533) is located between the top die control rod slot (531) and the forming die control rod slot (532), and the top die control rod (51) can be inserted into the top die control rod slot (531) and abut against the side wall of the top die control rod slot (531).

7. The high efficiency injection mold structure of claim 6 wherein, The die control assembly (5) further comprises elastic members (534) connected with the sealing die assembly (3) and the control member (53) respectively, so that the locking body (533) has a tendency to move away from the control protrusion (521) in the transverse direction.

8. The high efficiency injection mold structure of claim 7 wherein, At least one of the bottom end of the top die control rod (51) and the top end of the side wall of the top die control rod slot (531) is provided with a guide inclined surface (59).

9. The high efficiency injection mold structure of claim 7 wherein, At least one of the bottom end of the forming die control rod (52) and the top end of the side wall of the forming die control rod slot (532) is provided with a guide inclined surface (59).

10. The high efficiency injection mold structure of claim 7 wherein, The die control assembly (5) further comprises a fixed die control rod (54) fixedly connected with the fixed die assembly (4); and the fixed die control rod (54) can be inserted into the forming die control rod slot (532).

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