Mold ejection mechanism and mold assembly

Abstract

The utility model provides a mold ejection mechanism and a mold assembly, and relates to the technical field of molds. The mold ejection mechanism comprises a bottom plate, a force application piece, an ejection assembly and a reset piece. The force application piece and the bottom plate are arranged at an interval, and the force application piece is fixed relative to the bottom plate; the ejection assembly comprises an ejection plate, an ejection block and a first ejection piece, the ejection plate can move between the force application piece and the bottom plate, and the ejection block and the first ejection piece are movably arranged on the ejection plate; the reset piece is arranged on the bottom plate; the ejector plate moves in the direction close to the force application piece, so that the ejector block drives the first ejection piece to move from the initial position to the ejection position under the acting force of the force application piece. The top plate moves in the direction close to the bottom plate, so that the top block drives the first ejection piece to move from the ejection position to the initial position under the acting force of the reset piece. According to the mold ejection mechanism disclosed by the embodiment of the invention, a formed product can automatically fall off, and the occupied space is relatively small.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to a mold ejection mechanism and a mold assembly. BACKGROUND

[0002] The mold ejection mechanism is an important component of the mold assembly, and is used for ejecting a molded product from the mold assembly. However, when the molded product has a complex shape, the molded product cannot automatically fall off after being ejected by the mold ejection mechanism. To solve this problem, some mold assemblies are provided with an acceleration ejection mechanism. However, the acceleration ejection mechanism occupies a large space, which will affect the strength of the mold assembly to some extent. CONTENT OF THE UTILITY MODEL

[0003] Therefore, an embodiment of the present application aims to provide a mold ejection mechanism and a mold assembly which can realize automatic falling off of a molded product and occupy a small space.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application provides a mold ejection mechanism, which comprises:

[0005] a bottom plate;

[0006] a force applying member, which is spaced apart from the bottom plate and fixed relative to the bottom plate;

[0007] an ejection assembly, which comprises a top plate, a top block and a first ejection member, the top plate is movable between the force applying member and the bottom plate, and the top block and the first ejection member are movably arranged on the top plate;

[0008] a reset member, which is arranged on the bottom plate;

[0009] The top plate is moved towards the force applying member, so that the top block drives the first ejection member to move from an initial position to an ejection position under the action of the force applying member; and the top plate is moved towards the bottom plate, so that the top block drives the first ejection member to move from the ejection position to the initial position under the action of the reset member.

[0010] In an embodiment, the force applying member and the bottom plate are spaced apart along a first direction, and the first ejection member is driven by the top block to move along the first direction to switch between the initial position and the ejection position.

[0011] In one embodiment, the top block is rotatably arranged on the top plate, the top block has a first section and a second section, the first section and the second section are respectively located on opposite sides of the rotation axis of the top block, the first section is matched with the first ejector, and the second section is located between the force applying member and the reset member.

[0012] In one embodiment, the first section is rotatably connected with the first ejector.

[0013] In one embodiment, the first section has a mounting groove and an avoiding opening communicated with the mounting groove, the first ejector includes a main body and a connecting portion arranged on one end of the main body, the connecting portion is located in the mounting groove, the main body is arranged in the avoiding opening, and the top block is rotated under the action of the force applying member to apply a pushing force on the connecting portion, so as to push the first ejector to move from the initial position to the ejecting position.

[0014] In one embodiment, one side of the mounting groove opposite to the avoiding opening has a first wall surface and a second wall surface, the second wall surface is located on the side of the first wall surface away from the rotation axis, and the second wall surface is inclined away from the avoiding opening from the side close to the first wall surface to the side away from the first wall surface; when the first ejector is in the initial position, the connecting portion is in contact with the first wall surface, the top block is rotated under the action of the force applying member to make the second wall surface in contact with the connecting portion, so as to push the first ejector to move from the initial position to the ejecting position.

[0015] In one embodiment, the top plate is moved towards the force applying member to separate the reset member from the top block, and the top plate is moved towards the bottom plate to make the reset member abut against the second section to apply a pushing force on the second section to rotate the top block, so as to make the top block drive the first ejector to move from the ejecting position to the initial position.

[0016] In one embodiment, part of the top block is protruded to form a limiting protrusion located on the side of the rotation axis, and the limiting protrusion abuts against the top plate when the first ejector is in the ejecting position.

[0017] And / or, the top plate comprises a first top plate and a second top plate located on a side of the first top plate close to the bottom plate, the first top plate and the second top plate are detachably connected to jointly enclose a containing cavity, the first top plate has a first avoiding passage and a second avoiding passage respectively communicating with the containing cavity, the second top plate has a third avoiding passage communicating with the containing cavity, the top block is arranged in the containing cavity, the first ejector is arranged in the first avoiding passage and extends out of the first avoiding passage from a side of the first avoiding passage away from the second top plate, the second avoiding passage is used for avoiding the force applying member, and the third avoiding passage is used for avoiding the resetting member.

[0018] Another embodiment of the present application provides a mold assembly comprising:

[0019] The mold assembly comprises a mold unit having a cavity for containing a molded product, and a second ejector movably arranged in the mold assembly, the second ejector being movable to eject the molded product in the cavity to a first position.

[0020] The mold ejecting mechanism, the force applying member is located on the same side of the top plate as the mold assembly, and the first ejector is movable from the initial position to the ejecting position to eject the molded product in the first position to a second position.

[0021] In an embodiment, the mold unit comprises a first mold body and a second mold body located on a side of the first mold body away from the top plate, the first mold body is separably butted with the second mold body to form the cavity, the first mold body is kept fixed relative to the bottom plate, and the force applying member and the second ejector are arranged in the first mold body.

[0022] In an embodiment, the first mold body has a guide groove communicating with the cavity, and the first ejector is in sliding fit with the guide groove.

[0023] In an embodiment, the first mold body comprises a mold main body having a guide passage and a guide member having the guide groove, the mold main body is separably butted with the second mold body, the guide member is connected with the top plate and movably arranged in the guide passage.

[0024] In an embodiment, the mold assembly is located on a side of the top plate along a first direction, and further comprises an inclined ejector rotatable relative to the second ejector, in the process that the second ejector ejects the molded product to the first position, the second ejector and the inclined ejector are both movable along the first direction, and the inclined ejector abuts against the molded product.

[0025] The second ejection member is arranged on the guide member to move along the first direction under the driving of the guide member; and / or,

[0026] The inclined ejection member is rotatably arranged on the guide member to move along the first direction under the driving of the guide member.

[0027] The mold ejection mechanism in the embodiments of the present application movably arranges the top block and the first ejection member on the top plate. By relatively moving the top plate between the force applying member and the bottom plate, the force applying member and the reset member on the bottom plate can respectively apply force to the top block. When the top plate moves towards the direction close to the force applying member, the force applying member can apply force to the top block, so that the top block drives the first ejection member to move from the initial position to the ejection position. When the top plate moves towards the direction close to the bottom plate, the reset member can apply force to the top block, so that the top block drives the first ejection member to move from the ejection position to the initial position. That is, the relative movement of the top plate can be converted into the movement of the first ejection member to realize the automatic ejection and automatic reset of the first ejection member. When the first ejection member moves from the initial position to the ejection position, the molded product at the first position can be further ejected to the second position, so that the molded product can be automatically dropped without sticking to the second ejection member or the inclined ejection member. At the same time, since the movement of the first ejection member is realized under the driving of the top block, the force transmission path is simple and efficient, and the structure is relatively simple, so that the space occupied is small. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structural schematic diagram of a mold assembly provided in the embodiments of the present application;

[0029] Figure 2 A structural schematic diagram of a mold assembly provided in the embodiments of the present application; Figure 1 A partial enlarged view of A in FIG. 6;

[0030] Figure 3 A partial schematic diagram of a mold assembly in the embodiments of the present application;

[0031] Figure 4 A structural schematic diagram of a mold assembly provided in the embodiments of the present application; Figure 1 A structural schematic diagram of a guide member, a top block, a first ejection member, a second ejection member and an inclined ejection member;

[0032] Figure 5 A structural schematic diagram of a guide member, a top block, a first ejection member, a second ejection member and an inclined ejection member; Figure 1 A structural schematic diagram of a guide member, a top block, a first ejection member, a second ejection member and an inclined ejection member;

[0033] Explanation of reference signs:

[0034] 100, mold assembly; 10, mold ejection mechanism; 11, bottom plate; 12, force applying member; 13, ejection assembly; 131, top plate; 131a, accommodating cavity; 1311, first top plate; 1311a, first avoiding passage; 1311b, second avoiding passage; 1312, second top plate; 1312a, third avoiding passage; 132, top block; 132a, limiting protrusion; 1321, first section; 1321a, mounting groove; 1321a1, first wall surface; 1321a2, second wall surface; 1321b, avoiding opening; 1322, second section; 133, first ejection member; 1331, main body; 1332, connecting portion; 134, rotating pin; 14, reset member; 20, clamped mold; 21, second ejection member; 22, mold unit; 22a, cavity; 221, first mold body; 2211, mold main body; 2211a, guide passage; 2212, guide member; 2212a, guide groove; 23, inclined ejector pin; 200, formed product. DETAILED DESCRIPTION

[0035] In the description of the embodiments of the present application, it should be noted that the term "first direction" is based on the orientation or positional relationship shown in the drawings. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. Figure 1

[0036] The present application provides a mold ejection mechanism 10, please refer to Figures 1 to 5 , the mold ejection mechanism 10 includes a bottom plate 11, a force applying member 12, an ejection assembly 13 and a reset member 14.

[0037] The force applying member 12 is arranged between the bottom plate 11, and the force applying member 12 is kept fixed relative to the bottom plate 11. The ejection assembly 13 includes a top plate 131, a top block 132 and a first ejection member 133, the top plate 131 is movable between the force applying member 12 and the bottom plate 11, and the top block 132 and the first ejection member 133 are movably arranged on the top plate 131. The reset member 14 is arranged on the bottom plate 11.

[0038] The top plate 131 is moved towards the force applying member 12, so that the top block 132 drives the first ejection member 133 to move from the initial position to the ejection position under the action of the force applying member 12. The top plate 131 is moved towards the bottom plate 11, so that the top block 132 drives the first ejection member 133 to move from the ejection position to the initial position under the action of the reset member 14.

[0039] ​That is to say, when the top plate 131 moves, the force applying member 12, the bottom plate 11 and the reset member 14 remain stationary, so when the top plate 131 moves towards the force applying member 12, the top plate 131 is simultaneously away from the bottom plate 11, and when the top plate 131 moves towards the bottom plate 11, the top plate 131 is simultaneously away from the force applying member 12. As for the movement of the top plate 131 between the force applying member 12 and the bottom plate 11, it can be achieved by a cooperating ejection system, which exemplarily comprises a power unit and a transmission structure, the power unit can be any one of hydraulic drive, mechanical drive and electric drive, and the transmission structure includes but is not limited to a jacking rod and a push plate, the jacking rod is driven by the power unit to move the top plate 131 arranged on the push plate by exerting force on the push plate.

[0040] The top block 132 and the first ejector 133 are movably arranged on the top plate 131, that is to say, the top block 132 and the first ejector 133 are arranged on the top plate 131 and can move with the top plate 131 between the force applying member 12 and the bottom plate 11, and at the same time, the top block 132 and the first ejector 133 can move relative to the top plate 131. In the process of the top plate 131 moving towards the force applying member 12, the force applying member 12 exerts force on the top block 132, and the top block 132 can move relative to the top plate 131 to drive the first ejector 133 to move relative to the top plate 131, that is to say, the movement of the first ejector 133 between the initial position and the ejection position refers to the movement relative to the top plate 131 under the driving of the top block 132.

[0041] The number of the first ejector 133 is not limited, exemplarily, please refer to Figure 1 、 Figures 3 to 5 The number of the first ejector 133 is two, and the top block 132 can simultaneously drive the two first ejectors 133 to move between the initial position and the ejection position, so as to ensure that the mold ejection mechanism 10 has better ejection effect, and at the same time, the space occupied by the mold ejection mechanism is not increased.

[0042] Exemplarily, please refer to Figure 1 and Figure 2The top plate 131 comprises a first top plate 1311 and a second top plate 1312 located on the side of the first top plate 1311 close to the bottom plate 11. The first top plate 1311 and the second top plate 1312 are detachably connected to jointly enclose the accommodating cavity 131a. The first top plate 1311 has a first avoiding passage 1311a and a second avoiding passage 1311b which are in communication with the accommodating cavity 131a respectively. The second top plate 1312 has a third avoiding passage 1312a which is in communication with the accommodating cavity 131a. The top block 132 is arranged in the accommodating cavity 131a. The first ejector 133 is arranged in the first avoiding passage 1311a and extends out of the first avoiding passage 1311a from the side of the first avoiding passage 1311a away from the second top plate 1312. The second avoiding passage 1311b is used for avoiding the force applying member 12. The third avoiding passage 1312a is used for avoiding the resetting member 14. The first top plate 1311 and the second top plate 1312 are detachably connected, which can facilitate the top block 132 to be loaded into the accommodating cavity 131a. Meanwhile, the top block 132 does not occupy the space outside the top plate 131, and the overall size of the mold ejecting mechanism 10 can be reduced.

[0043] Exemplarily, please refer to Figure 1 and Figure 2 When the force applying member 12 applies force to the top block 132, the resetting member 14 does not apply force to the top block 132. When the resetting member 14 applies force to the top block 132, the force applying member 12 does not apply force to the top block 132. In other embodiments, the force applying member 12 and the resetting member 14 can simultaneously apply force to the top block 132. When the force applied by the force applying member 12 is greater than the force applied by the resetting member 14, the first ejector 133 moves from the initial position to the ejecting position. When the force applied by the resetting member 14 is greater than the force applied by the force applying member 12, the first ejector 133 moves from the ejecting position to the initial position.

[0044] Another embodiment of the present application provides a mold assembly 100, please refer to Figures 1 to 5 The mold assembly 100 comprises a clamping mold 20 and the mold ejecting mechanism 10 provided by any of the embodiments of the present application.

[0045] Please refer to Figures 1 to 4 The clamping mold 20 comprises a second ejector 21 and a mold unit 22. The mold unit 22 has a cavity 22a for accommodating a molded product 200. The second ejector 21 is movably arranged in the clamping mold 20. The second ejector 21 moves to eject the molded product 200 in the cavity 22a to a first position. The force applying member 12 is located on the same side of the top plate 131 as the clamping mold 20. The first ejector 133 moves from the initial position to the ejecting position to eject the molded product 200 in the first position to a second position.

[0046] The second ejector 21 can move relative to the clamping die 20 to extend into the cavity 22a to eject the molded product 200 to a first position.

[0047] The force applying member 12 is located on the same side of the top plate 131 as the clamping die 20, that is, the cavity 22a and the force applying member 12 are located on the same side of the top plate 131, and the first ejector 133 can extend into the cavity 22a during the movement of the top plate 131 towards the force applying member 12.

[0048] During the process of ejecting the molded product 200 to the first position by the second ejector 21, the first ejector 133 can abut against the molded product 200, that is, the top plate 131 moves towards the force applying member 12 to jointly eject the molded product 200 to the first position by the first ejector 133 and the second ejector 21, at this time, when the top plate 131 continues to move towards the force applying member 12, the force applying member 12 will generate a force on the top block 132 to drive the first ejector 133 to move from the initial position to the ejecting position, thereby further ejecting the molded product 200 from the first position to the second position, which is equivalent to that the first ejector 133 can further increase the ejecting stroke of the molded product 200 to achieve smooth demolding of the molded product 200.

[0049] In other embodiments, the molded product 200 can also be ejected to the first position by the second ejector 21 alone, and then the first ejector 133 ejects the molded product 200 to the second position.

[0050] More preferably, the first position and the second position can be different by 60-100 mm, that is, the first ejector 133 can further eject the molded product 200 by a distance of 60-100 mm to ensure that the molded product 200 can be better demolded.

[0051] The mold ejection mechanism 10 in the embodiment of the present application movably arranges the top block 132 and the first ejection piece 133 on the top plate 131. By relatively moving the top plate 131 between the force applying piece 12 and the bottom plate 11, the force applying piece 12 and the reset piece 14 on the bottom plate 11 can respectively apply force to the top block 132. When the top plate 131 moves towards the force applying piece 12, the top block 132 drives the first ejection piece 133 to move from the initial position to the ejection position. When the top plate 131 moves towards the bottom plate 11, the reset piece 14 can apply force to the top block 132, so that the top block 132 drives the first ejection piece 133 to move from the ejection position to the initial position. That is, the relative movement of the top plate 131 can be converted into the movement of the first ejection piece 133, so as to realize the automatic ejection and automatic reset of the first ejection piece 133. When the first ejection piece 133 moves from the initial position to the ejection position, the molded product 200 at the first position can be further ejected to the second position, so as to avoid the molded product 200 from sticking to the second ejection piece 21 or the inclined ejector 23, thereby realizing the automatic falling of the molded product 200. Since the movement of the first ejection piece 133 is realized under the driving of the top block 132, the force transmission path is simple and efficient, and the structure is relatively simple, so that the occupied space is small.

[0052] In some embodiments, referring to Figure 1 and Figure 2 , the force applying piece 12 and the bottom plate 11 can be arranged at intervals along the first direction, and the first ejection piece 133 moves along the first direction under the driving of the top block 132, so as to switch between the initial position and the ejection position.

[0053] The first direction is the demolding direction of the clamping mold 20. By moving the first ejection piece 133 along the first direction, the first ejection piece 133 can be prevented from interfering with the clamping mold 20, so that the first ejection piece 133 can more accurately eject the molded product 200.

[0054] In some embodiments, referring to Figures 1 to 3 , the top block 132 is rotatably arranged on the top plate 131. The top block 132 has a first section 1321 and a second section 1322, which are respectively located on opposite sides of the rotation axis of the top block 132. The first section 1321 cooperates with the first ejection piece 133, and the second section 1322 can be located between the force applying piece 12 and the reset piece 14.

[0055] The first section 1321 cooperates with the first ejection piece 133 means that when the top block 132 rotates relative to the top plate 131, the first section 1321 can drive the first ejection piece 133 to move.

[0056] The second section 1322 can be located between the force applying member 12 and the resetting member 14, and the force applying member 12 and the resetting member 14 can apply force to the second section 1322 respectively. For example, when the force applying member 12 applies force to the second section 1322, the first section 1321 on the other side of the rotation axis rotates towards the cavity 22a, so that the first ejector 133 moves from the initial position to the ejecting position. When the resetting member 14 applies force to the second section 1322, the first section 1321 on the other side of the rotation axis rotates away from the cavity 22a, so that the first ejector 133 moves from the ejecting position to the initial position.

[0057] For example, referring to Figure 3 and Figure 5 , the ejecting assembly 13 can further comprise a rotating pin 134 arranged on the top plate 131, and the first section 1321 and the second section 1322 have a rotating hole (not shown in the figure) therebetween, and the rotating pin 134 is arranged in the rotating hole, so that the top block 132 can rotate around the rotating pin 134 as the rotation axis, that is, the top block 132 can rotate relative to the rotating pin 134, so as to ensure that the top block 132 can be stably installed on the top plate 131, and the top block 132 can rotate relative to the top plate 131.

[0058] For example, referring to Figures 3 to 5 , the first section 1321 can be rotationally connected with the first ejector 133. That is, when the first section 1321 drives the first ejector 133 to move between the initial position and the ejecting position, the first ejector 133 and the first section 1321 can also have relative rotation.

[0059] For example, when the top block 132 rotates, the first section 1321 can apply driving force to the first ejector 133 in the first direction, so that the first ejector 133 can translate in the first direction as a whole. At the same time, the first ejector 133 can also rotate relative to the first section 1321 of the top block 132 by a certain angle, so that the first ejector 133 can not deviate from the first direction by a large angle due to the rotation of the top block 132, but can translate along the preset movement direction (the first direction), that is, the first ejector 133 only rotates relative to the first section 1321 of the top block 132 by a certain angle, but does not rotate relative to the clamping die 20 by a certain angle, so as to avoid movement jamming or component damage caused by rigid connection, and ensure the smoothness of the ejecting process.

[0060] Preferably, the rotation axis of the first ejector 133 can be parallel to the rotation axis of the top block 132.

[0061] For example, referring to Figure 4 and Figure 5The first section 1321 can have a mounting groove 1321a and an avoiding opening 1321b in communication with the mounting groove 1321a. The first ejector 133 includes a main body 1331 and a connecting portion 1332 arranged at one end of the main body 1331. The connecting portion 1332 is located in the mounting groove 1321a, and the main body 1331 is arranged in the avoiding opening 1321b. Under the action of the force of the force applying member 12, the top block 132 rotates, and the first section 1321 applies a pushing force to the connecting portion 1332, thereby pushing the first ejector 133 to move from the initial position to the ejecting position.

[0062] The mounting groove 1321a of the first section 1321 is used for mounting the connecting portion 1332 and is also a rotating space for the connecting portion 1332 to rotate relative to the top block 132. The avoiding opening 1321b is used for avoiding the movement path of the main body 1331.

[0063] It can be understood that when the reset member 14 applies a force to the top block 132 to make the top block 132 rotate, the first section 1321 applies a pulling force to the connecting portion 1332, so that the first ejector 133 moves from the ejecting position to the initial position.

[0064] By arranging the connecting portion 1332 to be rotatable in the mounting groove 1321a, sufficient rotating space is provided for the relative rotation of the connecting portion 1332, which not only ensures power transmission (pushing the first ejector 133 to move), but also provides physical space for relative rotation, so that the first ejector 133 can rotate flexibly relative to the top block 132 during the ejecting process, and rigid interference between components is avoided.

[0065] For example, referring to Figure 5 The side of the mounting groove 1321a opposite to the avoiding opening 1321b can have a first wall surface 1321a1 and a second wall surface 1321a2. The second wall surface 1321a2 is located on the side away from the rotating axis of the first wall surface 1321a1. From the side close to the first wall surface 1321a1 to the side away from the first wall surface 1321a1, the second wall surface 1321a2 is inclined away from the avoiding opening 1321b. When the first ejector 133 is in the initial position, the connecting portion 1332 is in contact with the first wall surface 1321a1. Under the action of the force of the force applying member 12, the top block 132 rotates, and the second wall surface 1321a2 is in contact with the connecting portion 1332, thereby pushing the first ejector 133 to move from the initial position to the ejecting position.

[0066] When the top block 132 rotates along the rotation axis, the first section 1321 pushes the first ejector 133 to move from the initial position to the ejecting position, the connecting part 1332 rotates in the mounting groove 1321a, the contact part of the connecting part 1332 with the mounting groove 1321a transits from the first wall surface 1321a1 to the second wall surface 1321a2, and since the first section 1321 rotates towards the direction close to the mold 20, the first wall surface 1321a1 and the second wall surface 1321a2 gradually rise, and the relative height of the first wall surface 1321a1 and the second wall surface 1321a2 changes, that is, the height of the second wall surface 1321a2 gradually becomes greater than the height of the first wall surface 1321a1, so as to ensure that the first ejector 133 moves from the initial position to the ejecting position.

[0067] By inclining the second wall surface 1321a2 towards the direction away from the avoiding opening 1321b, the rotating space of the connecting part 1332 is enlarged, and the contact area of the connecting part 1332 with the second wall surface 1321a2 is increased, so as to ensure that the top block 132 can stably support the connecting part 1332 when the first ejector 133 is in the ejecting position.

[0068] In some embodiments, referring to Figure 1 and Figure 2 , the top plate 131 can move towards the direction close to the force applying part 12 to separate the reset part 14 from the top block 132, and the top plate 131 can move towards the direction close to the bottom plate 11 to make the reset part 14 abut against the second section 1322 to apply a pushing force to the second section 1322 to make the top block 132 rotate, so as to make the top block 132 drive the first ejector 133 to move from the ejecting position to the initial position.

[0069] The reset part 14 contacts to apply a pushing force to the second section 1322 to make the first section 1321 drive the first ejector 133 to move from the ejecting position to the initial position. That is, the reset part 14 is a rigid mechanical part, the top block 132 only contacts the reset part 14 when it needs to move from the ejecting position to the initial position, the pushing force of the rigid mechanical part is stable and controllable, and reset failure or over-reset can be avoided.

[0070] In other embodiments, the reset part 14 can also be a spring part connected with the top block 132 and the bottom plate 11 respectively, the spring part always connects with the top block 132 in the movement process of the top plate 131, and can apply a pushing force to the top block 132 through the elastic potential energy thereof.

[0071] In some embodiments, referring to Figure 4 and Figure 5Part of the top block 132 is protruded to form a limiting protrusion 132a located at the side of the rotation axis, when the first ejector 133 is in the ejecting position, the limiting protrusion 132a abuts against the top plate 131.

[0072] The limiting protrusion 132a is used to limit the rotation angle of the top block 132, to avoid the connection between the top block 132 and the first ejector 133 being invalid due to excessive rotation of the top block 132.

[0073] In some embodiments, referring to Figure 1 The mold unit 22 includes a first mold body 221 and a second mold body (not shown in the figure) located at the side of the first mold body 221 away from the top plate 131, the first mold body 221 is detachably connected with the second mold body to form a cavity 22a, the first mold body 221 can be fixed relative to the bottom plate 11, and the force applying member 12 and the second ejector 21 are arranged on the first mold body 221.

[0074] When the first mold body 221 and the second mold body are connected, they enclose the cavity 22a, and at this time, injection molding can be performed in the cavity 22a. When the first mold body 221 and the second mold body are separated, the cavity 22a is opened, and at this time, the molded product 200 can be demolded.

[0075] The bottom plate 11 and the first mold body 221 are arranged opposite to each other, and the top plate 131 moves between the bottom plate 11 and the first mold body 221.

[0076] The force applying member 12 is arranged on the side of the first mold body 221 close to the top plate 131 and is fixed to the first mold body 221, so that when the top plate 131 is close to the first mold body 221, the force applying member 12 can apply a force to the top block 132. The second ejector 21 is movably arranged on the first mold body 221 and can move relative to the first mold body 221 to extend into the cavity 22a to eject the molded product 200 to the first position.

[0077] Exemplarily, referring to Figure 4 and Figure 5 The first mold body 221 can have a guide groove 2212a in communication with the cavity 22a, and the first ejector 133 is in sliding fit with the guide groove 2212a.

[0078] The guide groove 2212a is used to limit the movement direction of the first ejector 133, and exemplarily, the guide groove 2212a can extend in a first direction, and the first ejector 133 can slide in the guide groove 2212a in the first direction, so as to move between the ejecting position and the initial position, and ensure the movement stability of the first ejector 133.

[0079] The structure of the first mold body 221 is not limited, and exemplarily, referring to Figure 1 , Figures 3 to 5The first mold body 221 can include a mold main body 2211 having a guide channel 2211a and a guide 2212 having a guide groove 2212a. The mold main body 2211 is detachably connected to the second mold body, that is, the mold main body 2211 and the second mold body are connected to form a cavity 22a after being connected.

[0080] The guide 2212 is connected to the top plate 131 and movably passes through the guide channel 2211a, that is, the guide 2212 is arranged on the top plate 131 and can move with the top plate 131 between the mold main body 2211 and the bottom plate 11. When the top plate 131 moves towards the mold main body 2211, the guide 2212 can move in the guide channel 2211a, so that the first ejection member 133 can extend into the cavity 22a along the guide groove 2212a and from the guide channel 2211a, thereby ejecting the molded product 200 to the second position. As can be seen, by connecting the guide 2212 to the top plate 131, the stability of the guide 2212 can be ensured, and the stability of the movement of the first ejection member 133 can be further improved.

[0081] Please refer to Figures 1 to 5 The mold 20 is located on one side of the top plate 131 along the first direction, and the mold 20 can also include an inclined top 23 that can rotate relative to the second ejection member 21. During the process of the second ejection member 21 ejecting the molded product 200 to the first position, the second ejection member 21 and the inclined top 23 move along the first direction, and the inclined top 23 abuts against the molded product 200.

[0082] The inclined top 23 is used for side core-pulling of the molded product 200 to ensure that the molded product 200 with an inner recess structure can be smoothly demolded. For example, the mold 20 has a guide sliding groove (not shown in the figure) for guiding the inclined top 23, and the guide sliding groove is used for limiting the movement direction of the inclined top 23, so that the inclined top 23 can only slide along a direction intersecting the first direction, that is, the movement of the inclined top 23 along the first direction is actually a superposition of the two linear movements of “ejection along the first direction” and “side core-pulling (in a direction intersecting the first direction)”. During the process of the second ejection member 21 ejecting the molded product 200 to the first position, the inclined top 23 ejects the molded product 200 to the first position together with the second ejection member 21, and also moves relative to the second ejection member 21 and the molded product 200 along the side direction, thereby being separated from the molded product 200, and finally completing the side core-pulling.

[0083] Exemplarily, the outer surface of the shaped product 200 has a positioning groove (not shown in the figure) matched with the second ejector 21, and part of the structure of the second ejector 21 extends into the positioning groove. When the inclined ejector 23 performs lateral core-pulling, the second ejector 21 extends into the positioning groove, and the second ejector 21 limits the shaped product 200, so that the shaped product 200 remains stationary relative to the inclined ejector 23, thereby avoiding the shaped product 200 moving with the inclined ejector 23 due to viscous force, which causes the subsequent ejection of the first ejector 133 to fail.

[0084] Exemplarily, referring to Figure 1 and Figure 4 , the second ejector 21 can be arranged on the guide 2212 to move in the first direction under the driving of the guide 2212.

[0085] That is, when the guide 2212 moves with the top plate 131, the guide 2212 can simultaneously drive the first ejector 133 and the second ejector 21 to move synchronously, thereby eliminating the need for additional components to fix the second ejector 21 and the first ejector 133, reducing the number of parts of the mold assembly 100, occupying less space, not affecting the arrangement of other components, and meeting the mold design requirements.

[0086] Exemplarily, referring to Figure 1 and Figure 4 , the inclined ejector 23 is rotatably arranged on the guide 2212 to move in the first direction under the driving of the guide 2212.

[0087] That is, when the guide 2212 moves with the top plate 131, the guide 2212 can simultaneously drive the first ejector 133 and the inclined ejector 23 to move synchronously, thereby eliminating the need for additional components to fix the inclined ejector 23 and the first ejector 133, reducing the number of parts of the mold assembly 100, occupying less space, not affecting the arrangement of other components, and meeting the mold design requirements.

[0088] Figure 1 and Figure 4 , the first ejector 133, the second ejector 21, and the inclined ejector 23 are arranged on the guide 2212, which can further reduce the number of parts of the mold assembly 100 and reduce the space occupied by each component.

[0089] In the description of the application, the description of the terms "in an embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referring to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the application can be implemented in any suitable combination of hardware and / or software for any real or theoretical computer system dependent on the particular needs and requirements of the application being implemented. Moreover, the different embodiments or examples of the application can be combined with each other and / or combined with the features of the different embodiments or examples without departing from the scope of the application.

[0090] The above description is merely illustrative of the application, and is not intended to limit the application. The application can be modified and varied in various ways without departing from the spirit and scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the scope of the application.

Claims

1. A mold ejection mechanism characterized by, The mold ejection mechanism comprises: a bottom plate; a force applying member, which is spaced apart from the bottom plate and kept fixed relative to the bottom plate; an ejection assembly, which comprises a top plate, a top block and a first ejection member, the top plate being movable between the force applying member and the bottom plate, the top block and the first ejection member being movably arranged on the top plate; a reset member, which is arranged on the bottom plate; wherein the top plate is moved towards the force applying member, so that the top block drives the first ejection member to move from an initial position to an ejection position under the action of the force applying member; the top plate is moved towards the bottom plate, so that the top block drives the first ejection member to move from the ejection position to the initial position under the action of the reset member.

2. The mold ejection mechanism of claim 1, wherein, The force applying member and the bottom plate are spaced apart along a first direction, and the first ejection member is moved along the first direction under the driving of the top block to switch between the initial position and the ejection position.

3. The mold ejection mechanism of claim 1 or 2, wherein, The top block is rotatably arranged on the top plate, and has a first section and a second section located on opposite sides of a rotation axis of the top block, the first section is matched with the first ejection member, and the second section is located between the force applying member and the reset member.

4. The mold ejection mechanism of claim 3, wherein, The first section is rotatably connected with the first ejection member.

5. The mold ejection mechanism of claim 4, wherein, The first section has a mounting groove and an avoiding opening in communication with the mounting groove, the first ejection member comprises a main body and a connecting portion arranged at one end of the main body, the connecting portion is located in the mounting groove, the main body is arranged in the avoiding opening, and the top block is rotated under the action of the force applying member to apply a pushing force to the connecting portion by the first section, so as to drive the first ejection member to move from the initial position to the ejection position.

6. The mold ejection mechanism of claim 5, wherein, The side of the mounting groove opposite to the avoiding opening has a first wall surface and a second wall surface, the second wall surface is located on the side away from the rotation axis of the first wall surface, and the second wall surface is inclined away from the avoiding opening from the side close to the first wall surface to the side away from the first wall surface; when the first ejection member is in the initial position, the connecting portion is in contact with the first wall surface, the top block is rotated under the action of the force applying member to make the second wall surface in contact with the connecting portion, so as to drive the first ejection member to move from the initial position to the ejection position.

7. The mold ejection mechanism of claim 3, wherein The top plate is moved towards the force applying member to separate the reset member from the top block, and the top plate is moved towards the bottom plate to make the reset member abut against the second section to apply a pushing force to the second section to rotate the top block, so as to drive the top block to drive the first ejection member to move from the ejection position to the initial position.

8. The mold ejection mechanism of claim 3, wherein, Part of the top block is protruded to form a limiting protrusion located on the side of the rotation axis, and the limiting protrusion is in abutment with the top plate when the first ejection member is in the ejection position. And / or, the top plate comprises a first top plate and a second top plate located on a side of the first top plate close to the bottom plate, the first top plate and the second top plate are detachably connected to jointly enclose a containing cavity, the first top plate has a first avoiding passage and a second avoiding passage respectively communicating with the containing cavity, the second top plate has a third avoiding passage communicating with the containing cavity, the top block is arranged in the containing cavity, the first ejector is arranged in the first avoiding passage and extends out of the first avoiding passage from a side of the first avoiding passage away from the second top plate, the second avoiding passage is used for avoiding the force applying member, and the third avoiding passage is used for avoiding the reset member.

9. A mold assembly characterized by, Comprise: The mold comprises a second ejector and a mold unit, the mold unit has a cavity for containing a molded product, the second ejector is movably arranged in the mold, and the second ejector is moved to eject the molded product in the cavity to a first position; The mold ejecting mechanism of any one of claims 1-8, the force applying member is located on the same side of the mold as the top plate, and the first ejector is moved from the initial position to the ejecting position to eject the molded product in the first position to a second position.

10. The mold assembly of claim 9, wherein, The mold unit comprises a first mold body and a second mold body located on a side of the first mold body away from the top plate, the first mold body is detachably butted with the second mold body to form the cavity, the first mold body is fixed relative to the bottom plate, and the force applying member and the second ejector are arranged in the first mold body.

11. The mold assembly of claim 10, wherein, The first mold body has a guide groove communicating with the cavity, and the first ejector is in sliding fit with the guide groove.

12. The mold assembly of claim 11, wherein, The first mold body comprises a mold body having a guide passage and a guide member having the guide groove, the mold body is detachably butted with the second mold body, the guide member is connected with the top plate and movably arranged in the guide passage.

13. The mold assembly of claim 12, wherein, The mold is located on a side of the top plate along a first direction, and the mold further comprises an inclined ejector rotatable relative to the second ejector, in the process of the second ejector ejecting the molded product to the first position, the second ejector and the inclined ejector are both moved along the first direction, and the inclined ejector abuts against the molded product; The second ejector is arranged in the guide member to be moved along the first direction under the driving of the guide member; And / or, The inclined ejector is rotatably arranged in the guide member to be moved along the first direction under the driving of the guide member.

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