Straight ejection elastic block gliding core-pulling structure for injection mold

Abstract

The utility model discloses a straight ejector elastic block gliding core-pulling structure for an injection mold, which relates to the field of injection molds, and comprises a first ejector rod and a fixing part nested at the upper end of the first ejector rod, the inner side of the fixing part is fixedly mounted in a large straight ejector, a large elastic block is nested in the large straight ejector, and the inner side of the large elastic block is fixedly mounted in the large straight ejector. A reverse ejection mechanism is arranged at the lower end of the large elastic block and provided with a positioning piece. According to the straight ejection elastic block gliding core-pulling structure for the injection mold, the large straight ejector and the large elastic block do not participate in ejection any more, the two ejector pin plates are separated, and the barb is separated, at the moment, the secondary ejection inclined ejector is separated from an inverted buckle of a product, and the whole ejection is completed, so that when the secondary ejection inclined ejector at the upper end of the second ejector rod is ejected out, the secondary inclined ejector is ejected out along the interior of the groove like upwards; complete secondary ejection and secondary ejection are achieved, stable ejection can be achieved, materials in the mold are guaranteed, comprehensive upward ejection can be achieved, the ejection efficiency is guaranteed, and the efficient ejection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a direct-top elastic block sliding core-pulling structure for an injection mold. Background Technique

[0002] The direct-top elastic block sliding core-pulling structure in an injection mold is a mold design method used to achieve complex shapes or detailed features. This structure is mainly used in the injection process. When the mold is closed, not only the outer shape of the molded part needs to be formed, but also a part of the inner cavity needs to be withdrawn;

[0003] For example, a new type of direct-top elastic block structure with the publication number CN220261689U includes a direct-top block, a rear template, and a rear mold base. The rear mold base is provided with a thimble plate, and the thimble plate is provided with ejector rods; a cavity for molding a product is formed in the rear template, the direct-top block is placed in the cavity, the inner side surface of the cavity facing the direct-top block is a first inclined surface, the outer side surface of the direct-top block facing the rear template is a second inclined surface that fits the first inclined surface, and the bottom of the direct-top block is fixedly connected to the ejector rod; a sliding channel communicating with the second inclined surface is opened in the direct-top block, a spring block that can reciprocate along the sliding channel is arranged in the sliding channel, an elastic member for driving the spring block to move towards the outer side surface of the direct-top block is sleeved on the outer peripheral side surface of the spring block, and the outer side surface of the spring block facing the rear template is a third inclined surface that fits the first inclined surface. By sleeving the elastic member on the outer peripheral side of the spring block, the force on the spring block is made more uniform, and the problem of non-parallel force is solved;

[0004] For the above-mentioned new type of direct-top elastic block structure, by opening a sliding channel communicating with the inclined surface in the direct-top block, the force on the spring block can be made more uniform, and the problem of non-parallel force is solved. However, during use, only single ejection is performed, so when the upper module is core-pulled and demolded, it is easy to cause incomplete demolding and the overall core-pulling effect is not good. Content of the Utility Model

[0005] The purpose of the utility model is to provide a direct-top elastic block sliding core-pulling structure for an injection mold, so as to solve the problem that only single ejection is performed in the above-mentioned background technique, resulting in incomplete demolding and poor overall core-pulling effect when the upper module is core-pulled and demolded.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A direct-top elastic block sliding core-pulling structure for an injection mold includes a first ejector rod and a fixing member nested and installed at the upper end of the first ejector rod, and the inner side of the fixing member is fixedly installed inside the large direct-top.

[0007] A large spring block is nested and installed inside the large direct-top, a reverse ejection mechanism is arranged at the lower end of the large spring block, and a positioning member is arranged on the reverse ejection mechanism;

[0008] The front and rear ends of the large straight ejector are penetrated and installed with second ejector rods, and a secondary ejection mechanism is arranged outside the second ejector rods.

[0009] Furthermore, the upper end of the first ejector rod is nested inside the large straight ejector, and the number of the first ejector rods and the fixing members is set to four groups.

[0010] Furthermore, the positioning member is arranged at the lower end of the large elastic block, and a barb is arranged at the upper end of the large elastic block.

[0011] Furthermore, an inclined rod is nested and installed inside the large straight ejector, and the number of the inclined rods is set to three, and the inclined rods are slidably connected with the internal long grooves of the large straight ejector.

[0012] Furthermore, the secondary ejection mechanism is provided with a limit sleeve, and the limit sleeve is nested outside the second ejector rod, and the outside of the limit sleeve is fixedly installed on the inner wall of the large straight ejector.

[0013] Furthermore, grooves are formed at the front and rear ends of the large straight ejector, and a secondary inclined ejector is arranged inside the grooves, and the secondary inclined ejector is in a convex block shape, and the secondary inclined ejector is slidably connected with the grooves.

[0014] Furthermore, a secondary ejection inclined ejector is fixedly installed at the upper end of the second ejector rod, and the upper end of the secondary ejection inclined ejector corresponds to the lower end of the secondary inclined ejector.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. A first ejector rod is installed outside the large straight ejector of the device through a fixing member. Driven by the device, the first ejector rod can drive the large straight ejector to move up and down, so as to stably perform lifting and ejection, achieve the effect of straight ejection, and ensure the working effect of the device;

[0017] Furthermore, when the large straight ejector moves upward, the large elastic block is subjected to the force of the spring and will move in the obliquely downward direction. After disengaging from the barb, at this time, the secondary ejection inclined ejector moves synchronously with the large straight ejector, achieving a reverse ejection mechanism and ensuring the ejection efficiency;

[0018] Furthermore, supported by the positioning member at the lower end of the large elastic block, reverse ejection can be performed. At the same time, under the pressure of the inclined rod inside the large straight ejector, the large elastic block can stably perform reverse ejection, prevent shaking, and stably perform core pulling;

[0019] 2. The large straight ejector and the large elastic block no longer participate in the ejection. The two ejector plates are separated, and the undercut is disengaged. At this time, the secondary ejector lifter disengages from the undercut of the product, and the entire ejection is completed. In this way, when the secondary ejector lifter at the upper end of the second ejector rod ejects, the secondary ejector lifter ejects upward along the inside of the groove to achieve a complete secondary ejection. The secondary ejection can be stably carried out, ensuring the material inside the mold can be fully ejected upward, guaranteeing the ejection efficiency and achieving an efficient ejection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0021] Figure 2 It is a schematic sectional three-dimensional structure diagram of the present utility model;

[0022] Figure 3 It is a schematic bottom sectional three-dimensional structure diagram of the present utility model;

[0023] Figure 4 It is a schematic sectional three-dimensional structure diagram of the second ejector rod of the present utility model;

[0024] Figure 5 It is a schematic sectional three-dimensional structure diagram of the groove of the present utility model;

[0025] Figure 6 For the present utility model Figure 5 The enlarged structure diagram at position A in.

[0026] In the figure: 1. The first ejector rod; 2. The fixing part; 3. The large straight ejector; 4. The large elastic block; 5. The positioning part; 6. The inclined rod; 7. The undercut; 8. The second ejector rod; 9. The limit sleeve; 10. The secondary ejector lifter; 11. The secondary ejector lifter ejection; 12. The groove. SPECIFIC EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1:

[0029] As Figure 1 , Figure 4 and Figure 5The technical solution shown is to solve the problem of inconvenient direct jacking during the operation of the device, and discloses: a first ejector rod 1 and a fixing member 2 nested and installed at the upper end of the first ejector rod 1. The inner side of the fixing member 2 is fixedly installed inside the large direct ejector 3. The upper end of the first ejector rod 1 is nested inside the large direct ejector 3, and the number of the first ejector rods 1 and the fixing members 2 is set to four groups;

[0030] In the embodiment, a first ejector rod 1 is installed outside the large direct ejector 3 of the device through a fixing member 2. Driven by the device, the first ejector rod 1 can drive the large direct ejector 3 to move up and down, so as to stably perform lifting and ejecting, achieve the effect of direct jacking, and ensure the working effect of the device;

[0031] Embodiment Two:

[0032] Such as Figure 1 、 Figure 2 and Figure 3 The technical solution shown is to solve the problem of instability of the device during reverse ejection, and discloses: a large elastic block 4 is nested and installed inside the large direct ejector 3, and a reverse ejection mechanism is arranged at the lower end of the large elastic block 4. And the reverse ejection mechanism is provided with a positioning member 5, the positioning member 5 is arranged at the lower end of the large elastic block 4, and an inverted hook 7 is arranged at the upper end of the large elastic block 4. An inclined rod 6 is nested and installed inside the large direct ejector 3, and the number of the inclined rods 6 is set to three, and the inclined rods 6 form a sliding connection with the internal long groove of the large direct ejector 3;

[0033] In the embodiment, when the large direct ejector 3 moves upward, the large elastic block 4 is subjected to the force of the spring and will move in the obliquely downward direction. After disengaging the inverted hook 7, at this time, the secondary ejecting inclined ejector 10 moves synchronously with the large direct ejector 3, achieving the reverse ejection mechanism, ensuring the ejection efficiency. Supported by the positioning member 5 at the lower end of the large elastic block 4, it can be ejected in the reverse direction. At the same time, under the pressure of the inclined rod 6 inside the large direct ejector 3, the large elastic block 4 can stably eject in the reverse direction, preventing shaking and stably performing core pulling;

[0034] Embodiment Three:

[0035] Such as Figures 1 - 6 The technical solution shown is to solve the problem of insufficient comprehensive single ejection, and discloses: second ejector rods 8 are installed through the front and rear ends of the large direct ejector 3, and a secondary ejection mechanism is arranged outside the second ejector rods 8. The secondary ejection mechanism is provided with a limit sleeve 9, and the limit sleeve 9 is nested outside the second ejector rods 8, and the outer side of the limit sleeve 9 is fixedly installed on the inner wall of the large direct ejector 3. Grooves 12 are opened at the front and rear ends of the large direct ejector 3, and a secondary inclined ejector 11 is arranged inside the grooves 12. And the secondary inclined ejector 11 is in a convex block shape, and the secondary inclined ejector 11 is slidably connected with the grooves 12. The upper end of the second ejector rod 8 is fixedly installed with a secondary ejecting inclined ejector 10, and the upper end of the secondary ejecting inclined ejector 10 corresponds to the lower end position of the secondary inclined ejector 11;

[0036] In the embodiment, when the second ejector rod 8 inside the limit sleeve 9 performs a secondary upward ejection, the large straight ejector 3 and the large elastic block 4 do not participate in the ejection. The two ejector plates are separated, and the undercut 7 is disengaged. At this time, the secondary ejector lifter 10 disengages from the product undercut, and the entire ejection is completed. In this way, when the secondary ejector lifter 10 at the upper end of the second ejector rod 8 ejects, the secondary ejector lifter 11 ejects upward along the inside of the groove 12 to achieve a complete secondary ejection. The secondary ejection can be stably performed, ensuring that the material inside the mold can be fully ejected upward, guaranteeing the ejection efficiency and achieving the effect of high-efficiency ejection.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A straight ejector spring block downward sliding core pulling structure for an injection mold, comprising a first ejector rod (1) and a fixing member (2) nested and installed at the upper end of the first ejector rod (1), wherein the inner side of the fixing member (2) is fixedly installed inside a large straight ejector rod (3); Features: A large spring block (4) is nested and installed inside the large straight ejector (3), and a reverse ejection mechanism is provided at the lower end of the large spring block (4), and the reverse ejection mechanism is provided with a positioning member (5); A second ejector rod (8) is installed through the front and rear ends of the large straight ejector (3), and a secondary ejection mechanism is arranged on the outer side of the second ejector rod (8).

2. The straight top spring block sliding down core pulling structure for injection mold according to claim 1, characterized in that: The upper end of the first push rod (1) is nested inside the large straight push rod (3), and the number of the first push rod (1) and the fixing member (2) is set to four groups.

3. The straight top spring block sliding down core pulling structure for injection mold according to claim 1, characterized in that: The positioning member (5) is arranged at the lower end of the large elastic block (4), and a barb (7) is arranged at the upper end of the large elastic block (4).

4. The straight top spring block sliding core pulling structure for injection mold according to claim 3, characterized in that: The large straight top (3) is nested with an inclined rod (6), the number of which is set to three, and the inclined rod (6) is slidably connected to the internal long groove of the large straight top (3).

5. The straight top spring block sliding core pulling structure for injection mold according to claim 1, characterized in that: The secondary ejection mechanism is provided with a limiting sleeve (9), and the limiting sleeve (9) is nested on the outside of the second ejector rod (8), and the outside of the limiting sleeve (9) is fixedly mounted on the inner wall of the large straight ejector (3).

6. The straight top spring block sliding down core pulling structure for injection mold according to claim 5, characterized in that: The front and rear ends of the large straight top (3) are provided with grooves (12), and a secondary inclined top ejection (11) is arranged inside the groove (12). The secondary inclined top ejection (11) is in the shape of a convex block, and the secondary inclined top ejection (11) is slidably connected to the groove (12).

7. The straight top spring block sliding down core pulling structure for injection mold according to claim 6, characterized in that: A secondary ejector slant ejector (10) is fixedly mounted on the upper end of the second ejector rod (8), and the upper end of the secondary ejector slant ejector (10) corresponds to the lower end of the secondary ejector slant ejector (11).

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