Front mold elastic block mechanism and injection mold applying same

Abstract

The front mold elastic block mechanism comprises a front mold fixing plate, a plate A, a front mold core, a limiting bolt, an elastic block and a spring, the front mold fixing plate is fixed on one side of the plate A, a limiting hole is formed in one side of the plate A, the front mold core is embedded and fixed on the other side of the plate A, and the elastic block is arranged in the limiting hole. The head of the limiting bolt can be slidably arranged in the limiting hole in the first direction, the elastic block is slidably inserted into the front mold core in a penetrating mode and comprises a fixing part, a forming part and a reset part, a screw of the limiting bolt penetrates through the plate A and then is fixedly inserted into the fixing part, and the forming part and the reset part are both connected to the side, away from the limiting bolt, of the fixing part; the forming part is used for forming the top and the outer side of a deep bone position on the front mold side of an injection product during injection molding, the reset part is connected to the outer side of the forming part and abuts against a rear mold core of the rear mold before mold opening, and the two ends of the spring abut against the position between the plate A and the fixing part respectively.

Description

Technical Field

[0001] This utility model relates to the field of complex injection mold technology, and in particular to a front mold spring block mechanism and an injection mold using the same. Background Technology

[0002] Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product.

[0003] like Figure 3 As shown, a common injection mold generally includes a front mold 81 and a rear mold 91. The front mold 81 includes a front mold fixing plate 82, an A plate 83, and a front mold core 84. The front mold fixing plate 81 and the A plate 83 are fixedly connected. The front mold core 84 is embedded and fixed on the A plate 83 on the side away from the front mold fixing plate 82. The rear mold 91 includes a B plate 92 and a rear mold core 93. The rear mold core 93 is embedded on the B plate 92 on the side close to the A plate. When the product is injected, the B plate 91 gradually moves away from the A plate 82 to complete the mold opening. Finally, the product left on the rear mold 90 is ejected to complete the demolding and obtain the molded part.

[0004] However, when the injection-molded product has deep ribs on the front mold side, for example... Figure 1 As shown in the figure, the injection molded product 101 often has a large clamping force at the rib position in the front mold. When the mold is opened, the injection molded product at the rib position is easy to stick to the front mold and be pulled out. Therefore, how to prevent the injection molded product from sticking to the front mold at the deep rib position on the front mold side has become a problem that needs to be solved. Utility Model Content

[0005] The purpose of this invention is to solve the problem of how to prevent the deep ribs on the front mold side of injection molded products from sticking to the front mold.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a front mold spring block mechanism, including: a front mold fixing plate, an A plate, a front mold core, a limiting bolt, a spring block, and a spring. The front mold fixing plate is fixed to one side of the A plate along a first direction, and a limiting hole is opened on one side of the A plate. The front mold core is embedded and fixed to the other side of the A plate. The head of the limiting bolt is slidably disposed in the limiting hole along the first direction. The spring block is slidably inserted through the front mold core. The spring block includes a fixing part, a forming part, and a resetting part. The screw of the limiting bolt passes through the A plate and is inserted and fixed on the fixing part. The forming part and the resetting part are both connected to the side of the fixing part away from the limiting bolt. The forming part is used to form the top and outer part of the deep rib of the front mold side of the injection molded product during injection molding. The resetting part is connected to the outer side of the forming part. The resetting part abuts against the rear mold core of the rear mold before mold opening and is used to reset the spring block after hitting the parting surface when the mold is closed. The two ends of the spring are respectively abutted between the A plate and the fixing part.

[0008] Optionally, one end of the spring is embedded in the A plate near one side of the front mold core, and the other end of the spring is embedded in the fixed part.

[0009] Preferably, the side of the spring has a gap with the A plate and the fixed part.

[0010] Optionally, when the elastic block is reset, the fixed part abuts against the A plate.

[0011] Optionally, the front mold fixed plate is detachably fixed on one side of the A plate.

[0012] Optionally, the elastic block is an integrally formed member.

[0013] Optionally, the outer side of the elastic block has a slope, which gradually inclines outward away from the center of the front mold core in the first direction.

[0014] Optionally, the screw rod of the limiting bolt is inserted and fixed in the interior of the fixed part.

[0015] Optionally, the screw rod of the limiting bolt is detachably inserted and fixed on the fixed part.

[0016] Optionally, the outer diameter of the head of the limiting bolt is smaller than the inner diameter of the limiting hole.

[0017] The utility model also provides a kind of injection mold, including the front mold elastic block mechanism of any one described above.

[0018] Compared with prior art, the front mold elastic block mechanism of the utility model, clever design, when opening mold, the front mold side deep bone site of injection product is pressed by elastic block first, can effectively prevent the front mold side deep bone site of injection product from sticking on front mold, greatly improve the quality of injection product.

[0019] The injection mold of the utility model can conveniently injection mold the injection product with deep bone site on the front mold side. DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 It is the structure schematic view of the front mold elastic block mechanism of an embodiment of the utility model before opening mold.

[0022] Figure 2It is the structural schematic view of the front mold elastic block mechanism of the embodiment of the utility model when the elastic block begins to separate from the injection molding product.

[0023] Figure 3 It is a conventional injection molding mold structural schematic view. DETAILED DESCRIPTION

[0024] In order to make the purpose, structure, characteristics and functions of the utility model have further understanding, the following detailed description is combined with the embodiment.

[0025] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model.

[0026] Please refer to Figure 1 and Figure 2 A front mold elastic block mechanism 100 for setting the front mold side deep bone position of the injection molding product 101 on the back mold 7 in the first direction X when the mold is opened, the front mold elastic block mechanism 100 comprises: a front mold fixed plate 1, an A plate 2, a front mold kernel 3, a limiting bolt 4, an elastic block 5 and a spring 6.

[0027] The front mold fixed plate 1 is fixed on one side of the A plate 2 in the first direction X, and a limiting hole 21 is formed on one side of the A plate 2.

[0028] The front mold kernel 3 is embedded and fixed on the other side of the A plate 2.

[0029] The head of the limiting bolt 4 is slidably arranged in the limiting hole 21 in the first direction X.

[0030] The elastic block 5 is slidably inserted through the front mold kernel 3, the elastic block 5 comprises a fixed part 51, a forming part 52 and a reset part 53, the screw rod of the limiting bolt 4 is inserted and fixed on the fixed part 51 after passing through the A plate 2, the forming part 52 and the reset part 53 are both connected on the side of the fixed part 51 away from the limiting bolt 4, the forming part 52 is used for forming the top and the outer side of the front mold side deep bone position of the injection molding product 101 when injection molding, the reset part 53 is connected on the outside of the forming part 52, the reset part 53 is arranged on the back mold kernel of the back mold 7 before the mold is opened, and is used for resetting the elastic block 5 after colliding with the parting surface when the mold is closed.

[0031] The two ends of the spring 6 are arranged between the A plate 2 and the fixed part 51.

[0032] Optionally, one end of the spring 6 is embedded in the A plate 2 near one side of the front mold core 3, and the other end of the spring 6 is embedded in the fixed part 51. In this way, the spring 6 is stably placed, and space is saved.

[0033] Preferably, the side of the spring 6 has a gap between the A plate 2 and the fixed part 51. In this way, the spring 6 can better stretch and contract in the first direction X.

[0034] Optionally, when the elastic block 5 is reset, the fixed part 51 abuts against the A plate 2. In this way, the elastic block 5 operates more stably.

[0035] Optionally, the front mold fixed plate 1 is detachably fixed to one side of the A plate 2. In this way, the limit bolt 4 is easy to disassemble.

[0036] Optionally, the elastic block 5 is an integral molded part. In this way, the elastic block 5 is easy to process and has a firm structure.

[0037] Optionally, the outer side of the elastic block 5 has a slope, which gradually inclines outward away from the center of the front mold core 3 along the first direction X. In this way, the elastic block 5 is better separated from the front mold core 3.

[0038] Optionally, the screw rod of the limit bolt 4 is detachably inserted and fixed in the inside of the fixed part 51. In this way, the connection is more stable and space is saved.

[0039] Optionally, the screw rod of the limit bolt 4 is detachably inserted and fixed in the fixed part 51. In this way, the elastic block 5 is easy to disassemble and maintain.

[0040] Optionally, the outer diameter of the head of the limit bolt 4 is smaller than the inner diameter of the limit hole 21. In this way, the limit bolt 4 is easy to install and slide.

[0041] The utility model also provides a kind of injection mold, including the front mold elastic block mechanism 100 of any one described above.

[0042] The front mold elastic block mechanism 100 of the utility model one embodiment operates as follows:

[0043] When the mold is opened, the rear mold 7 starts to move away from the front mold core 3 along the first direction X, at this time, the elastic block 5 continues to be set on the rear mold 7 by the front mold side deep bone site of injection product 101 under the action of spring 6, until the head of limit bolt 4 abuts against the bottom surface of limit hole 21, the front mold core 3 and injection product 101 are separated, then the elastic block 5 starts to gradually separate from the front mold side deep bone site of injection product 101, so that injection product 101 is completely left on the rear mold 7, finally the follow-up injection product 101 is demolded;

[0044] When the mold is closed, the rear mold 7 starts to approach the front mold core 3 along the first direction X, when the bottom surface of the reset part 53 hits the rear mold core 71 of the rear mold 7 (i.e. the elastic block 5 hits the parting surface of the front mold core 3 and the rear mold core 71), the elastic block 5 is pressed back into the front mold core 3 along the first direction X successively, at this time the spring 6 is compressed, until the reset part 53 is just pressed back into the front mold core 3 completely, the mold closing is completed.

[0045] The utility model has been described by the above related embodiments, however the above embodiment is only an example of implementing the utility model. It must be pointed out that the disclosed embodiment does not limit the scope of the utility model. On the contrary, the change and the decoration made without departing from the spirit and the scope of the utility model all belong to the patent protection scope of the utility model.

Claims

1. A front mold spring block mechanism, characterized in that, include: Front mold fixing plate, A plate, front mold core, limit bolts, spring blocks and springs; The front mold fixing plate is fixed to one side of the A plate along the first direction, and a limit hole is opened on one side of the A plate; The front mold core is embedded and fixed on the other side of the A plate; The head of the limiting bolt can be slidably disposed in the limiting hole along the first direction; The spring block is slidably inserted into the front mold core. The spring block includes a fixing part, a molding part, and a resetting part. The screw of the limiting bolt passes through the A plate and is inserted and fixed on the fixing part. The molding part and the resetting part are both connected to the side of the fixing part away from the limiting bolt. The molding part is used to form the top and outer part of the deep rib of the front mold side of the injection molded product during injection molding. The resetting part is connected to the outer side of the molding part. The resetting part abuts against the rear mold core of the rear mold before mold opening and is used to reset the spring block after hitting the parting surface when the mold is closed. The two ends of the spring are respectively positioned between plate A and the fixing part.

2. The front mold spring block mechanism as described in claim 1, characterized in that, One end of the spring is embedded in the A plate near the front mold core, and the other end of the spring is embedded in the fixing part.

3. The front mold spring block mechanism as described in claim 2, characterized in that, There are gaps between the side of the spring and the A plate and the fixing part.

4. The front mold spring block mechanism as described in claim 1, characterized in that, When the spring block resets, the fixing part is pressed against the A plate.

5. The front mold spring block mechanism as described in claim 1, characterized in that, The front mold fixing plate is detachably fixed to one side of the A plate.

6. The front mold spring block mechanism as described in claim 1, characterized in that, The spring block is a one-piece molded part.

7. The front mold spring block mechanism as described in claim 1, characterized in that, The outer side of the spring block has an incline, gradually tilting outwards and away from the center of the front mold core along the first direction.

8. The front mold spring block mechanism as described in claim 1, characterized in that... The screw of the limiting bolt is inserted and fixed inside the fixing part.

9. The front mold spring block mechanism as described in claim 1, characterized in that, The outer diameter of the head of the limiting bolt is smaller than the inner diameter of the limiting hole.

10. An injection mold, characterized in that, include: The front mold spring block mechanism as described in any one of claims 1-9.

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