Quick change structure of insert

Abstract

The utility model discloses a kind of quick replacement structure of insert, the structure includes mould blank, mould kernel, insert and bolt, insert is inserted into mould kernel, and mould kernel side surface is equipped with bolt hole, and insert side wall is equipped with first slot and second slot, and the end of bolt section is adapted to bevel. When installing, bolt is inserted into bottom slot from mould kernel side surface, and insert is extruded to position towards mould blank by bevel cooperation, without knocking top polishing insert;When disassembling, after bolt is pulled out, it is inserted into top slot, and bevel cooperation extrudes insert to direction away from mould blank and is extruded out, without knocking material position unknockable insert. The present application can complete insert replacement without machine, shorten single replacement time, improve trial mould and production efficiency;Avoid disassembling mould and knocking operation under machine, reduce artificial, equipment standby and mould maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of mold manufacturing and injection molding, and in particular to a quick-change insert structure. Background Technology

[0002] During mold trial production and mass production, inserts, as key components in mold forming, often need to be replaced according to product design changes or process adjustments.

[0003] Traditional insert designs use screws for fixing. When insert replacement is needed, it requires removal from the machine for disassembly and replacement. This means first removing the mold from the production equipment (such as an injection molding machine or stamping machine), then disassembling the mold structure, unscrewing the screws fixing the insert, and finally removing the insert from the mold core by tapping. After replacing the insert, the mold must be reassembled and the machine tested. This fixing method involves multiple steps, including removing the machine, disassembling the mold, removing screws, tapping the insert, installing the new insert, reassembling the mold, and reinstalling the machine, resulting in low efficiency. Furthermore, the long downtime and the increased manual labor required for mold disassembly and insert tapping increase production costs. Frequent tapping can also damage the mold core and insert edges, increasing mold maintenance and parts replacement costs. Utility Model Content

[0004] This invention aims to at least partially solve one of the problems in related technologies. Therefore, one objective of this invention is to provide a quick-change insert structure, enabling insert replacement during trial molding or production without removing the insert from the machine, thereby improving operational efficiency and reducing costs.

[0005] A quick-change insert structure, the quick-change insert structure comprising: mold blank; Mold core, the mold core being disposed on the mold blank; and An insert, which is detachably installed within the mold core; The insert has a first slot and a second slot arranged radially thereon. The quick-change structure for the insert also includes a pin. The pin is inserted into the mold core through a through hole on the side of the mold core and engages with either the first slot or the second slot of the insert. The end side of the pin has a mating slope. The first slot has a first slope, and the second slot has a second slope. The first slope is located on the side facing the mold blank. When the pin engages with the first slot, the mating slope engages with the first slope. The insertion movement of the pin presses the insert in the direction towards the mold blank to complete the installation of the insert. The second slope is located on the side away from the mold blank. When the pin engages with the second slot, the mating slope engages with the second slope. The insertion movement of the pin presses the insert in the direction away from the mold blank to achieve the removal of the insert.

[0006] Furthermore, the cross-sectional shape of the pin is square.

[0007] Furthermore, the first slot is located on the side of the insert closer to the mold blank, and the second slot is located on the side of the insert away from the mold blank.

[0008] Furthermore, the mating inclined surface is located on the end side of the pin and extends along the length direction of the pin to form an inclined surface.

[0009] Furthermore, the inclination direction of the first inclined surface and the second inclined surface are consistent with the insertion direction of the pin.

[0010] Furthermore, the through hole provided on the side of the mold core extends horizontally through the mold core, and the inner wall shape of the through hole matches the cross-sectional shape of the pin.

[0011] Furthermore, the quick-change insert structure includes at least two pins, which are inserted through through holes provided on the side of the mold core and respectively engage with the first slot and the second slot.

[0012] Furthermore, the depths of both the first and second slots are adapted to the dimensions of the pin.

[0013] Furthermore, the insert is connected to the mold core via a sliding fit.

[0014] Furthermore, the mold core and the mold blank are installed by means of bolt fixing or snap-fit ​​connection.

[0015] Compared with the prior art, the technical solution provided in this application has the following advantages: This application does not require removing the mold from the machine or disassembling the mold. The installation and disassembly of the insert can be completed simply by inserting and removing the pin on the side of the mold core. This significantly reduces equipment downtime, improves the trial molding progress and production cycle, and increases replacement and production efficiency. On the one hand, it reduces the manual input of complex steps such as removing the mold, disassembling the mold, and installing the mold, thereby reducing labor costs. On the other hand, it avoids damage to the insert and mold core caused by hammering operations, reduces mold maintenance and parts replacement costs, and shortens the trial molding cycle, reducing product development costs and thus reducing overall production costs. The insertion is installed / removed by extrusion through the cooperation of the inclined surface of the pin and the inclined surface of the slot. There is no need to hammer the top of the insert or the material position. This can effectively protect the polished surface of the top polished insert and the functional structure of the material position that cannot be hammered, thus extending the service life of the mold and the insert. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] In the attached image: Figure 1 This is a schematic diagram of one embodiment of the quick-change insert structure of this application; Figure 2 This is a cross-sectional schematic diagram of a split structure according to an embodiment of the quick-change insert structure of this application; Figure 3 This is a cross-sectional schematic diagram of the installation steps of an embodiment of the quick-change insert structure of this application; Figure 4 This is a cross-sectional disassembly diagram of an embodiment of the quick-change insert structure of this application; Figure 5 This is a schematic diagram of the external structure of one embodiment of the quick-change insert structure of this application.

[0019] Figure label: 10. Mold blank; 20. Mold core; 21. Pin hole; 30. Insert; 31. First slot; 311. First slope; 32. Second slot; 321. Second slope; 40. Pin; 41. Pin slope. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] like Figure 1 - Figure 5 As shown, this application provides a quick-change structure for an insert 30, comprising: Mold blank 10; Mold core 20, the mold core 20 being disposed on the mold blank 10; and Insert 30, which is detachably installed within the mold core 20; The insert 30 has a first slot 31 and a second slot 32 arranged radially therefrom. The quick-change structure of the insert 30 also includes a pin 40. The pin 40 is inserted into the mold core 20 through a through hole on its side and engages with the first slot 31 or the second slot 32 of the insert 30. The end side of the pin 40 has a mating slope. The first slot 31 has a first slope 311, and the second slot 32 has a second slope 321. The first slope 311 is located on the side facing the mold blank 10. The pin 40 and... When the first slot 31 is engaged, the engagement slope engages with the first slope 311. Through the insertion movement of the pin 40, the insert 30 is pressed in the direction toward the mold blank 10 to complete the installation of the insert 30. The second slope 321 is located on the side away from the mold blank 10. When the pin 40 engages with the second slot 32, the engagement slope engages with the second slope 321. Through the insertion movement of the pin 40, the insert 30 is pressed in the direction away from the mold blank 10 to achieve the disassembly of the insert 30.

[0023] The mold blank 10 serves as the basic frame of the mold, providing mounting support for the mold core 20 and defining the assembly reference orientation of the mold core 20 and the insert 30. The mold core 20 is fixed inside the mold blank 10, and its interior has an assembly hole that matches the shape of the insert 30. The insert 30 can be inserted into the mold core 20 along the assembly hole. At the same time, the side of the mold core 20 has a pin hole 21 that extends through to the assembly hole for the insertion and positioning of the pin 40. The insert 30 is a mold forming functional component that needs to be precisely matched with the assembly hole of the mold core 20. Its side wall has two slots for mating with the pin 40, namely the first slot 31 and the second slot 32. The inner wall of the first slot 31 facing the mold blank 10 has a first inclined surface 311, and the inner wall of the second slot 32 facing away from the mold blank 10 has a second inclined surface 321. The side of the end of the pin 40 has a mating inclined surface that matches the first inclined surface 311 and the second inclined surface 321 of the first slot 31 and the second slot 32.

[0024] The installation of insert 30 can be completed directly on the machine without removing it from the machine. The specific steps are as follows: First, align insert 30 with the assembly hole of mold core 20 and insert it into mold core 20 along the assembly hole until the bottom of insert 30 is close to mold blank 10; Insert pin 40 into pin hole 21 on the side of mold core 20, so that the end of pin 40 is aligned with the first slot 31 of insert 30; During the process of pushing pin 40, the inclined surface of pin 40 cooperates with the first inclined surface 311 of the first slot 31 (facing the mold blank 10 side). The guiding effect of the inclined surface will convert the pushing force of pin 40 into the squeezing force on insert 30, gradually squeezing insert 30 towards mold blank 10; Continue to insert pin 40 until pin 40 is fully in place. At this time, insert 30 is precisely fitted to mold blank 10 under the squeezing action, and the installation is completed; Especially for top polished insert 30, there is no need to knock the top of insert 30 (to avoid damaging the polished surface). The precise installation of insert 30 can be achieved by simply cooperating with the inclined surface 41 of pin.

[0025] The removal of insert 30 also does not require removing it from the machine. The specific steps are as follows: First, pull out the pin 40 from the pin hole 21 on the side of the mold core 20, disengaging it from the first slot 31; adjust the direction of pin 40 (no need to replace pin 40), and reinsert pin 40 into the pin hole 21 on the side of the mold core 20, aligning the end of pin 40 with the second slot 32 of insert 30; during the pushing of pin 40, the inclined surface of pin 40 engages with the second inclined surface 321 of the second slot 32 (the side facing away from mold blank 10), and the inclined surface... The guiding action converts the thrust of the pin 40 into a squeezing force on the insert 30, gradually squeezing the insert 30 away from the mold blank 10. Continue inserting the pin 40 until the insert 30 comes out of the assembly hole of the mold core 20 under the squeezing action, and the insert 30 can be directly removed to complete the disassembly. In scenarios where the insert 30 cannot be knocked (to avoid damaging the material position structure), the stable force characteristics of the square pin 40 can ensure that the insert 30 can be safely removed by the inclined extrusion without the need for knocking.

[0026] Furthermore, the cross-sectional shape of the pin 40 is square.

[0027] Using a square pin 40 serves several purposes: First, it improves stress stability. Compared to a circular cross-section, the square cross-section has a larger contact area with the pin hole 21 and the slot, resulting in more even stress distribution. This avoids the displacement and deformation caused by concentrated force when inserting or removing a traditional circular pin 40, ensuring accurate positioning of the insert 30. Second, it adapts to special inserts 30. For scenarios where the insert 30 cannot be hammered, the stable force of the square pin 40, combined with its beveled surface, precisely presses the insert 30 into the installation position without the need for hammering. Third, it reduces operational difficulty. Even force distribution makes inserting and removing the pin 40 smoother, reducing jamming during manual operation and further shortening replacement time.

[0028] Furthermore, the first slot 31 is located on the side of the insert 30 closer to the mold blank 10, and the second slot 32 is located on the side of the insert 30 away from the mold blank 10.

[0029] Specifically, this design can, on the one hand, protect the polished surface of the top of the insert 30. Traditional installation requires striking the top of the insert 30, which can easily wear down the polished layer. However, in this embodiment, the bottom slot slope faces the mold blank 10. When it engages with the pin slope 41, it will gradually press the insert 30 towards the mold blank 10, achieving precise installation without the need for striking and completely avoiding damage to the polished surface. On the other hand, it can improve the installation accuracy. The pressure generated by the slope engagement is uniform and controllable, ensuring the fit between the insert 30 and the mold blank 10 and mold core 20, avoiding the positional displacement of the insert 30 caused by traditional striking, and improving the molding accuracy of the mold. Furthermore, it can simplify the installation operation. No additional striking tools are needed; installation can be completed simply by pushing the pin 40, reducing the complexity and skill requirements of manual operation.

[0030] Furthermore, the mating inclined surface is located on the end side of the pin 40 and extends along the length direction of the pin 40 to form an inclined surface.

[0031] Specifically, this design can, on the one hand, protect the material position structure of the insert 30. Traditional disassembly requires striking the insert 30 to remove it, which can easily damage the material position (a critical part of the molding). In this embodiment, the top slot slope is away from the mold blank 10. When it cooperates with the pin slope 41, it will gradually squeeze the insert 30 away from the mold blank 10, and the insert 30 can be squeezed out of the mold core 20 without striking, thus avoiding damage to the material position. On the other hand, it can improve the safety of disassembly. Compared with striking, the extrusion method is more gentle and controllable, which can prevent the insert 30 from cracking or deforming due to excessive instantaneous striking force, and extend the service life of the insert 30. Furthermore, it can simplify the disassembly process. There is no need to find the striking point or control the striking force. The insert 30 can be removed simply by inserting the pin 40, which reduces the risk and difficulty of manual operation and further shortens the disassembly time.

[0032] Furthermore, the inclination directions of the first inclined surface 311 and the second inclined surface 321 are consistent with the insertion direction of the pin 40.

[0033] Specifically, this design ensures operability when the mold core 20 is installed. After the mold is installed, the side of the mold core 20 is usually not obstructed by production equipment (such as injection molding machines), allowing operators to directly reach in or use simple tools to insert or remove the pin 40 without disassembling the mold, thus achieving "replacement without leaving the machine." On the other hand, it reduces the operating space requirement. The pin hole 21 on the side does not require a large operating space, and the pin 40 operation can be completed smoothly even in production scenarios with densely packed molds. Furthermore, it improves operational safety. Side operation avoids the need for hands to enter the mold, reducing safety risks caused by mold closure or accidental movement of parts. At the same time, the insertion and removal direction of the pin 40 is perpendicular to the assembly direction of the insert 30, making the operation logic clearer and reducing the probability of misoperation.

[0034] Furthermore, the through hole provided on the side of the mold core 20 extends horizontally through the mold core 20, and the inner wall shape of the through hole matches the cross-sectional shape of the pin 40.

[0035] This design scheme has several advantages. First, it ensures smooth insertion and removal of the pin 40. The shape of the through hole matches the cross-section of the pin 40, preventing the pin 40 from shifting or getting stuck during insertion and removal, ensuring that the pin 40 can be accurately and quickly inserted into or removed from the slot, thus improving operational efficiency. Second, it stabilizes the force on the pin 40. The combination of the square pin 40 and the square through hole provides a larger force-bearing area, making it less prone to shaking during insertion and removal. This ensures that the pressure exerted by the pin 40 on the insert 30 is stable and uniform, improving the accuracy of insert installation or removal. Third, it enhances the structural strength of the mold core 20. Compared to a round through hole, the square through hole requires less cutting of the mold core 20 material, maintaining the integrity of the mold core 20 structure and enhancing its load-bearing capacity and service life.

[0036] Furthermore, the quick-change structure of the insert 30 includes at least two pins 40, which are inserted through through holes provided on the side of the mold core 20 and respectively cooperate with the first slot 31 and the second slot 32.

[0037] Specifically, this design ensures the stable installation of the insert 30. By simultaneously engaging at least two pins 40 with the first slot 31 or the second slot 32 of the insert 30, multi-point fixation is achieved, preventing the insert 30 from loosening due to uneven force or vibration during mold operation, thus improving the stability and precision of mold forming. Secondly, it enhances replacement efficiency. The simultaneous operation of multiple pins 40 shortens the installation or removal time of the insert 30, further improving production efficiency. Thirdly, it accommodates inserts 30 of different sizes. The number and position of the pins 40 can be flexibly adjusted according to the size and shape of the insert 30, ensuring accurate and rapid installation. Furthermore, the coordinated use of multiple pins 40 can distribute the force on the insert 30 to a certain extent, reducing the load on a single pin 40 and extending the service life of both the pins 40 and the insert 30.

[0038] Furthermore, the depths of both the first slot 31 and the second slot 32 are adapted to the dimensions of the pin 40.

[0039] This design scheme ensures a tight fit between the pin 40 and the slot. After insertion, the end of the pin 40 fully enters the slot and makes effective contact with the bottom surface, preventing loosening or detachment during insertion and removal, thus improving the reliability of the insert 30's installation and removal. Secondly, it optimizes the force distribution on the pin 40. The slot depth matches the pin 40's size, ensuring even force distribution during insertion and preventing bending or breakage due to excessively deep or shallow slots, extending the pin 40's lifespan. Thirdly, it enhances ease of operation. The moderate slot depth allows operators to easily insert and remove the pin 40 without additional tools or excessive force, reducing operational difficulty and labor intensity. Furthermore, the compatibility between the slot depth and pin 40 size also reduces mold material waste and lowers production costs.

[0040] Furthermore, the insert 30 is connected to the mold core 20 by a sliding fit.

[0041] The sliding fit allows the insert 30 to slide smoothly along the mounting hole within the mold core 20, facilitating its installation and removal. During installation, the insert 30 slides into the mold core 20 along the mounting hole until its bottom approaches the mold blank 10. At this point, the insertion of the pin 40 presses the insert 30 towards the mold blank 10, achieving precise positioning. During removal, the removal and re-insertion of the pin 40 into the second slot 32 presses the insert 30 away from the mold blank 10, allowing it to slide out of the mold core 20 along the mounting hole. This sliding fit not only simplifies the insert 30 replacement process but also improves its accuracy and efficiency. Furthermore, the sliding fit results in relatively less wear on the insert 30 and mold core 20, helping to extend the service life of the mold and insert 30 and further reduce production costs.

[0042] Furthermore, the mold core 20 and the mold blank 10 are installed by means of bolt fixing or snap connection.

[0043] The stable connection between the mold core 20 and the mold blank 10 ensures the overall rigidity and precision of the mold. The bolt fixing method uses pre-tightening force to tightly fit the mold core 20 onto the mold blank 10, effectively resisting various external forces during mold operation and ensuring the stability and consistency of the mold's forming dimensions. The snap-fit ​​connection method simplifies the installation process, eliminating the need for additional fasteners; the snap-fit ​​structure allows for quick connection between the mold core 20 and the mold blank 10, facilitating mold assembly and disassembly. Both connection methods meet the mold's requirements for rigidity and precision, and the appropriate connection method can be flexibly selected based on specific production needs and mold structure characteristics. Furthermore, the connection between the mold core 20 and the mold blank 10 must also consider factors such as the coefficient of thermal expansion and material compatibility to ensure that the mold maintains good performance and stability under high-temperature and high-pressure working environments.

[0044] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A quick-change insert structure, comprising: mold blank; Mold core, the mold core being disposed on the mold blank; as well as An insert, which is detachably installed within the mold core; The insert is characterized in that it has a first slot and a second slot arranged radially thereon, and the quick-change structure of the insert further includes a pin. The pin is inserted into the mold core through a through hole provided on the side of the mold core and engages with the first slot or the second slot of the insert. The end side of the pin is provided with a mating slope. The first slot is provided with a first slope, and the second slot is provided with a second slope. The first slope is located on the side facing the mold blank. When the pin engages with the first slot, the mating slope engages with the first slope. Through the insertion movement of the pin, the insert is pressed in the direction towards the mold blank to complete the installation of the insert. The second slope is located on the side away from the mold blank. When the pin engages with the second slot, the mating slope engages with the second slope. Through the insertion movement of the pin, the insert is pressed in the direction away from the mold blank to achieve the disassembly of the insert.

2. The insert quick-change structure according to claim 1, characterized in that, The cross-sectional shape of the pin is square.

3. The quick-change insert structure according to claim 2, characterized in that, The first slot is located on the side of the insert closer to the mold blank, and the second slot is located on the side of the insert away from the mold blank.

4. The insert quick-change structure according to claim 3, characterized in that, The mating inclined surface is located on the end side of the pin and extends along the length of the pin to form an inclined surface.

5. The insert quick-change structure according to claim 4, characterized in that, The inclination direction of the first inclined surface and the second inclined surface are consistent with the insertion direction of the pin.

6. A quick-change insert structure according to any one of claims 2 to 5, characterized in that, The through hole on the side of the mold core extends horizontally through the mold core, and the inner wall shape of the through hole matches the cross-sectional shape of the pin.

7. A quick-change insert structure according to any one of claims 1 to 5, characterized in that, The quick-change insert structure includes at least two pins, which are inserted through through holes on the side of the mold core and respectively engage with the first slot and the second slot.

8. A quick-change insert structure according to any one of claims 1 to 5, characterized in that, The depths of both the first and second slots are adapted to the dimensions of the pin.

9. The quick-change insert structure according to claim 1, characterized in that, The insert is connected to the mold core via a sliding fit.

10. The insert quick-change structure according to claim 1, characterized in that, The mold core and the mold blank are installed by means of bolt fixing or snap-fit ​​connection.

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