Mechanism for quickly replacing mold insert

Abstract

The utility model discloses a quick mold insert replacing mechanism which comprises an upper mold base and a lower mold base, an upper mold core and a lower mold core which correspond to each other are installed on the upper mold base and the lower mold base, a first installation groove is formed in the upper mold base, a rotating piece is rotationally connected in the first installation groove, an insert body is arranged in the upper mold core in a penetrating mode and extends into the first installation groove, and the rotating piece is connected with the lower mold core in a rotating mode. The first installation groove abuts against one end of the rotating piece, the first installation groove is further provided with a through hole corresponding to the other end of the rotating piece, the through hole extends to the upper mold core, one side of the first installation groove is provided with a movable groove communicated with the first installation groove, a movable piece is placed in the movable groove, one side of the movable piece is provided with a limiting step, and the insert body is provided with a limiting groove capable of being connected with the limiting step in a clamped mode. A second mounting groove communicated with the outside is formed in the side, away from the first mounting groove, of the movable groove, and a screw in threaded connection with the movable part is placed in the second mounting groove, the design structure is simple, operation is convenient, the mold does not need to be detached from a machine table for switching of the insert body, and the replacement time of the insert body is shortened.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds, in particular to a rapid mold insert replacement mechanism. Background Art

[0002] In some plastic products, it is common to design certain areas of some products differently to achieve different functions and requirements. The more types of plastic products there are, the more similar products of the same model there are. At the same time, the product structure is more complex, and the requirements for molds are becoming more and more precise.

[0003] Chinese patent document "202222253595.4, an injection mold with lockable and ejectable inserts" includes: a template, a mold core, an insert body, an insertion rod and a locking block, the mold core is arranged in the template, the insert body is arranged in the mold core, a positioning groove corresponding to the insert body is arranged inwardly on the mold core, a first plug hole pointing to the insert body is arranged on one side of the template, an embedding groove corresponding to the locking block is arranged on the outer end of the first plug hole, a second plug hole concentric with the first plug hole and extending to the positioning groove is arranged on one side of the mold core, the insertion rod extends to the second plug hole through the first plug hole, a locking groove pointing to the insertion rod is arranged horizontally in the insert body, a locking tongue inserted into the locking groove is arranged at the inner end of the insertion rod, a first inclined surface obliquely pointing downward to the insertion rod is arranged at the lower part of the lock groove, and a locking tongue is arranged at the lower part of the lock tongue. A second inclined surface is parallel to the first inclined surface, and an ejection groove intersecting the locking groove is longitudinally arranged in the insert body, a third inclined surface is arranged on the top of the ejection groove and obliquely points upward to the insertion rod, and a fourth inclined surface corresponding to the third inclined surface is arranged on one side of the lock tongue. Through the cooperation of the second inclined surface at the lower part of the lock tongue and the first inclined surface at the lower part of the lock groove, the insert body can be locked in the mold core, and the structure is stable. When disassembling and replacing, the lock tongue is first pulled out with the insertion rod, rotated 90° and then inserted into the ejection groove. At this time, the fourth inclined surface on the side of the lock tongue contacts the third inclined surface at the top of the ejection groove. As the lock tongue goes deeper, the insert body will be ejected. The operation is simple, and the damage to the top surface cavity of the insert body is avoided. There is no need to disassemble the template and the mold core, which improves the speed of replacing the insert body.

[0004] However, the above structure requires too many accessories to be removed when removing the insert body, and the operation is too complicated. Utility Model Content

[0005] The utility model aims to provide a mechanism for quickly changing mold inserts to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A quick-change mold insert mechanism comprises an upper mold base and a lower mold base, wherein the upper mold base and the lower mold base are equipped with corresponding upper mold cores and lower mold cores, the upper mold base and the upper mold core are provided with a connected pouring port, the pouring port is provided with a pouring nozzle, and the lower mold core is provided with a pouring channel connected with the pouring nozzle, the upper mold base is provided with a mounting groove one, a rotating part is rotatably connected in the mounting groove one, an insert body is passed through the upper mold core, the insert body extends into the mounting groove one and abuts against one end of the rotating part, the mounting groove one is also provided with a through hole corresponding to the other end of the rotating part, the through hole extends to the upper mold core, a movable groove connected thereto is provided on one side of the mounting groove one, a movable part is placed in the movable groove, a limiting step is provided on one side of the movable part, a limiting groove that can be engaged with the limiting step is provided on the insert body, a mounting groove two connected to the outside is provided on the side of the movable groove away from the mounting groove, and a screw threadedly connected to the movable part is placed in the mounting groove two.

[0008] Furthermore, a groove is provided in the second installation slot, and the groove is used to place the nut of the screw.

[0009] Furthermore, the lower die base includes a lower die plate, an ejection mechanism is provided below the lower die plate, supporting square irons are provided on both sides of the ejection mechanism, a lower die fixing plate is provided below the supporting square irons, and the upper die base includes an upper die plate for installing an upper die core, an upper water inlet plate is detachably connected to the upper die plate, and an upper die fixing plate is provided on the upper water inlet plate.

[0010] Furthermore, guide holes are provided at four corners of the upper end of the lower template, and guide rods corresponding to the guide holes are provided at four corners of the lower end of the upper template.

[0011] Furthermore, the ejection mechanism includes a push plate, a mounting plate for mounting an ejector is provided on the push plate, at least two movable columns are provided on the mounting plate, one end of the movable column is connected to the mounting plate, and the other end is movably inserted into the lower template, and the movable column is located between the mounting plate and the lower template and is sleeved with an elastic member.

[0012] Furthermore, there are four movable columns, and the four movable columns are respectively arranged at four corners of the mounting plate.

[0013] Furthermore, at least one notch 1 is provided in four directions of the upper template, and a notch 2 corresponding to notch 1 is provided in four directions of the lower template. Notch 1 and notch 2 are connected, a convex block is installed on notch 1, and a concave block corresponding to the convex block is installed on notch 2.

[0014] Beneficial effects of the utility model:

[0015] The utility model locks the insert body by the cooperation of the screw and the movable part, and the structure is stable. When disassembling and replacing, the screw is turned to move the movable part in the direction away from the insert body until the limiting step is separated from the limiting groove, thereby unlocking the insert body. Then, a push pin is inserted into the through hole. After the push pin is pushed toward the rotating part, the other end of the rotating part will tilt up, and the insert body will be lifted up, so that the insert body can be manually taken out and replaced, and a new insert body is inserted until it abuts against the rotating part, and the rotating part is rotated and reset. Then, the screw is turned in the opposite direction to move the movable part in the direction of the insert body until the limiting step is engaged in the limiting groove of the insert body, so that the insert body can be locked. This design has a simple structure and is easy to operate. There is no need to disassemble the mold from the machine to switch the insert body, which greatly shortens the replacement time of the insert body.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : The overall structure diagram of the utility model.

[0018] Figure 2 : The left view of the utility model.

[0019] Figure 3 :The explosion of the upper die seat and the lower die seat of the utility model Figure 1 .

[0020] Figure 4 : Figure 3 A magnified view of the structure of part A

[0021] Figure 5 :The explosion of the upper die seat and the lower die seat of the utility model Figure 2 .

[0022] Figure 6 : A cross-sectional view of the utility model.

[0023] Figure 7 : Figure 6 Enlarged view of the structure of part A.

[0024] Figure 8 : Figure 6 Enlarged view of the structure of part B.

[0025] Fig. 9 : The structural diagram of the rotating part, the insert body, the movable part and the screw of the utility model.

[0026] 1. The upper mold base; 2. The lower mold base; 3. The upper mold core; 4. The lower mold core; 5. The pouring gate; 6. The pouring nozzle; 7. The pouring channel; 8. The insert body; 11. The upper mold plate; 12. The upper water inlet plate; 13. The upper mold fixing plate; 14. The guide rod; 15. The notch one; 16. The protrusion; 21. The lower mold plate; 22. The supporting square iron; 23. The lower mold fixing plate; 24. The ejection mechanism; 25. The guide hole; 26. The notch two; 27. The concave block; 81. The limiting groove; 111. The mounting groove one; 112. The rotating part; 113. The socket; 114. The through hole; 115. The movable groove; 116. The movable part; 117. The mounting groove two; 118. The screw; 171. The groove; 241. The push plate; 242. The mounting plate; 243. The movable column; 244. The elastic part; 1161. The limiting step. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Please refer to Figure 1-9 ;

[0029] A quick-change mold insert mechanism comprises an upper mold base 1 and a lower mold base 2, wherein the upper mold base 1 and the lower mold base 2 are provided with corresponding upper mold cores 3 and lower mold cores 4, wherein the upper mold core 3 can be closely fitted with the lower mold core 4, wherein the upper mold base 1 and the upper mold core 3 are provided with a connected pouring port 5, wherein the pouring port 5 is provided with a pouring nozzle 6, wherein the lower mold core 4 is provided with a pouring channel 7 connected with the pouring nozzle 6, wherein during injection molding, the injection molding material is injected from the pouring port 5 into the pouring nozzle 6, and then flows along the pouring nozzle 6 to the pouring channel 7, wherein the upper mold base 1 is provided with a mounting groove 111, wherein a rotating member 112 is rotatably connected to the mounting groove 111, wherein an insert body 8 is passed through the upper mold core 3, and the insert body 8 extends to the mounting groove 112. In the embodiment of the present invention, the first mounting groove 111 is provided with a through hole 114 corresponding to the other end of the rotating member 112, and the through hole 114 extends to the upper mold core 3 to form an entrance, and a pin can be inserted from the through hole 114. By utilizing the principle of lever, when the insert body 8 needs to be replaced, the pin is used to push against the rotating member 112, and the other end of the rotating member 112 will be tilted to lift the insert body 8, so that the insert body 8 can be manually taken out and replaced. After the insertion, the insert body 8 only needs to be directly inserted into the insert body 8 until it abuts against the rotating member 112, and the rotating member 112 is rotated and reset, so as to achieve the purpose of quickly disassembling and assembling the insert body 8, and improve the replacement efficiency of the insert body 8. A movable groove 115 connected to the installation groove 111 is provided on one side of the installation groove 111, and the movable groove 115 is arranged on the side close to the slot 113. A movable part 116 is placed in the movable groove 115, and a limiting step 1161 is provided on one side of the movable part 116. A limiting groove 81 that can be engaged with the limiting step 1161 is provided on the insert body 8, and a mounting groove 2 117 connected to the outside is provided on the side of the movable groove 115 away from the mounting groove 111. A screw 118 threadedly connected to the movable part 116 is placed in the second 117. The movable part 116 is controlled to move in the movable groove 115 by the screw 118. By turning the screw 118, the movable part 116 can be displaced accordingly in the movable groove 115. For example, by turning the screw 118 to the right, the movable part 116 will move away from the insert body 8 until the limiting step 1161 is disengaged from the limiting groove 81, thereby releasing the lock on the insert body 8. Then, by turning the screw 118 to the left, the movable part 116 can be moved toward the insert body 8 until the limiting step 1161 is engaged in the limiting groove 81 of the insert body 8, thereby locking the insert body 8.

[0030] Specifically, when the insert body 8 needs to be replaced, the upper die base 1 and the lower die base 2 are first separated, and then the screw 118 is turned to the right with a tool to move the movable part 116 away from the insert body 8 until the limiting step 1161 is disengaged from the limiting groove 81, the insert body 8 is unlocked, and then a ejector pin is inserted into the through hole 114. After the ejector pin is pushed against the rotating part 112, the other end of the rotating part 112 will be tilted, and the insert body 8 can be lifted up, and the insert body 8 can be manually taken out and replaced. After replacement, the new insert body 8 is inserted into It abuts against the rotating part 112 and rotates the rotating part 112 to reset, then turns the screw 118 to the left to move the movable part 116 toward the insert body 8 until the limiting step 1161 is engaged in the limiting groove 81 of the insert body 8, so that the insert body 8 can be locked, and finally the upper mold base 1 and the lower mold base 2 are closed to continue the injection molding work. This design has a simple structure and is easy to operate. There is no need to remove the mold from the machine to switch the insert body 8, which greatly shortens the replacement time of the insert body 8.

[0031] In this embodiment, a groove 171 is provided in the first installation groove 111 . The groove 171 is used to place a nut of the screw 118 . The groove 171 restricts the screw 118 within the second installation groove 117 , thereby preventing the screw 118 from moving when the screw 118 is rotated.

[0032] In this embodiment, the lower mold base 2 includes a lower mold plate 21, an ejection mechanism 24 is provided below the lower mold plate 21, supporting square irons 22 are provided on both sides of the ejection mechanism 24, and a lower mold fixing plate 23 is provided below the supporting square irons 22. The lower mold plate 21 is supported by the supporting square irons 22, so that a certain moving space is left between the lower mold plate 21 and the lower mold fixing plate 23. The upper mold base 1 includes an upper mold plate 11 for installing the upper mold core 3, and an upper water inlet plate 12 is detachably connected to the upper mold plate 11, and an upper mold fixing plate 13 is provided on the upper water inlet plate 12.

[0033] Furthermore, guide holes 25 are provided at the four corners of the upper end of the lower template 21, and guide rods 14 corresponding to the guide holes 25 are provided at the four corners of the lower end of the upper template 11. When the upper mold base 1 and the lower mold base 2 are molded together, the guide rods 14 are aligned with the guide holes 25 and inserted to prevent misalignment when the upper mold base 11 and the lower mold base 21 are molded together, thereby ensuring the accuracy of the mold closing position.

[0034] Furthermore, the ejection mechanism 24 includes a push plate 241, on which a mounting plate 242 for mounting an ejector pin (not shown in the figure) is disposed, and on which at least two movable columns 243 are disposed, one end of the movable column 243 is connected to the mounting plate 242, and the other end is movably disposed on the lower template 21, and the movable column 243 is located between the mounting plate 242 and the lower template 21 and is sleeved with an elastic member 244, the top of the elastic member 244 abuts against the lower end surface of the upper template 11, and the bottom of the elastic member 244 abuts against the upper end surface of the mounting plate 242, Preferably, the elastic member 244 can be a spring. When the mold is closed, the upper template 11 abuts against the movable column 243 of the lower template 21, and the movable column 243 moves downward, thereby driving the mounting plate 242 and the push plate 241 to move downward and stretching the elastic member 244. When the mold is opened, the upper template 11 is separated from the movable column 243 on the lower template 21, and the elastic member 244 is reset to drive the mounting plate 242 and the push plate 241 to move upward, thereby ejecting the molded product. For specific methods, refer to paragraph 0032 of the patent document "CN220008643U, injection mold with quick mold change".

[0035] Furthermore, there are four movable columns 243 , which are respectively arranged at four corners of the mounting plate 242 , so that the material stripping is more stable.

[0036] In this embodiment, at least one notch 15 is provided in the four directions of the upper template 11, and a notch 26 corresponding to the notch 15 is provided in the four directions of the lower template 21. The notch 15 and the notch 26 are connected. A protrusion 16 is installed on the notch 15, and a concave block 27 corresponding to the protrusion 16 is installed on the notch 26. Specifically, two protrusions 16 and concave blocks 27 are arranged on each side along the length direction of the upper template 11 and the lower template 21, and are symmetrically arranged, while one protrusion 16 and concave block 27 are arranged on each side along the width direction of the upper template 11 and the lower template 21, and are arranged in the middle position. The notch of the concave block 27 faces inward, and the convex part of the protrusion 16 corresponds to the notch of the concave block 27. When the upper template 11 and the lower template 21 are molded, it can play a positioning role, further ensuring the accuracy of the mold position.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A quick-change mold insert mechanism, comprising an upper mold base (1) and a lower mold base (2), wherein the upper mold base (1) and the lower mold base (2) are provided with corresponding upper mold cores (3) and lower mold cores (4), wherein the upper mold base (1) and the upper mold core (3) are provided with a pouring port (5) connected thereto, wherein the pouring port (5) is provided with a pouring nozzle (6), and the lower mold core (4) is provided with a pouring channel (7) connected to the pouring nozzle (6), wherein the pouring channel (7) is provided in communication with the pouring nozzle (6), wherein the pouring channel (7) is provided in communication with the pouring nozzle (6), wherein the pouring channel (7) is provided in communication with the pouring nozzle (6), and ... The upper die seat (1) is provided with a mounting groove (111), a rotating member (112) is rotatably connected in the mounting groove (111), an insert body (8) is passed through the upper die core (3), the insert body (8) extends into the mounting groove (111) and abuts against one end of the rotating member (112), the mounting groove (111) is also provided with a through hole (114) corresponding to the other end of the rotating member (112), the through hole (114) extends to the upper die core (3), and one side of the mounting groove (111) is provided with A movable groove (115) is provided in communication with the movable groove (115), a movable part (116) is placed in the movable groove (115), a limiting step (1161) is provided on one side of the movable part (116), a limiting groove (81) that can be engaged with the limiting step (1161) is provided on the insert body (8), a mounting groove (117) in communication with the outside is provided on the side of the movable groove (115) away from the mounting groove (111), and a screw (118) threadedly connected to the movable part (116) is placed in the mounting groove (117).

2. A quick mold insert change mechanism according to claim 1, characterized in that: The second installation groove (117) is provided with a groove (171), and the groove (171) is used to place the nut of the screw (118).

3. A quick mold insert change mechanism according to claim 1, characterized in that: The lower die base (2) comprises a lower die plate (21), an ejection mechanism (24) is provided below the lower die plate (21), supporting square irons (22) are provided on both sides of the ejection mechanism (24), a lower die fixing plate (23) is provided below the supporting square irons (22), and the upper die base (1) comprises an upper die plate (11) for mounting an upper die core (3), an upper water inlet plate (12) is detachably connected to the upper die plate (11), and an upper die fixing plate (13) is provided on the upper water inlet plate (12).

4. A quick mold insert change mechanism according to claim 3, characterized in that: The four corners of the upper end of the lower template (21) are provided with guide holes (25), and the four corners of the lower end of the upper template (11) are provided with guide rods (14) corresponding to the guide holes (25).

5. A quick mold insert change mechanism according to claim 3, characterized in that: The ejection mechanism (24) comprises a push plate (241), a mounting plate (242) for mounting an ejector pin is provided on the push plate (241), at least two movable columns (243) are provided on the mounting plate (242), one end of the movable column (243) is connected to the mounting plate (242), and the other end is movably arranged on the lower template (21), and the movable column (243) is located between the mounting plate (242) and the lower template (21) and is sleeved with an elastic member (244).

6. A quick mold insert change mechanism according to claim 5, characterized in that: There are four movable columns (243), and the four movable columns (243) are respectively arranged at the four corners of the mounting plate (242).

7. A quick mold insert change mechanism according to claim 3, characterized in that: At least one notch (15) is provided in four directions of the upper template (11), and two notches (26) corresponding to the notch (15) are provided in four directions of the lower template (21); the notch (15) and the notch (26) are connected; a convex block (16) is installed on the notch (15), and a concave block (27) corresponding to the convex block (16) is installed on the notch (26).

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